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Zakim and Boyer's Hepatology

Zakim and Boyer's Hepatology

Thomas D. Boyer | Arun J. Sanyal | Norah A Terrault | Keith D Lindor

(2016)

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Book Details

Abstract

Get the authoritative, up-to-date information you need on liver disease from the 7th Edition of the most trusted reference worldwide. Covering both basic science and recent clinical developments, this revised edition by Drs. Arun J. Sanyal, Thomas D. Boyer, Norah A. Terrault, and Keith D. Lindor, provides an in-depth, comprehensive look at the pathophysiology, diagnostic, and treatment information related to the liver. More than 1,100 figures and tables, many new and in full color, highlight completely updated content throughout.

  • Expert, international authorship and comprehensive, easy-to-access information makes this edition the gold standard in the field of hepatology.
  • Includes new information on the rapid changes in treatment paradigms for acute liver failure, the latest treatments for primary biliary cholangitis, full coverage of the gut microbiome and its role in liver disease, the newest developments in drug-induced liver injury, and changes in hepatitis C virus treatment and hot-button concerns about access to care.
  • New summary boxes at the end of each chapter and a newly streamlined table of contents make it easier to find and understand the information you’re looking for.
  • Hundreds of brand-new illustrations clearly present key aspects of liver disease.

Table of Contents

Section Title Page Action Price
Front Cover cover
Expert Consult page IFC1
Zakim and Boyer's Hepatology i
Copyright Page iv
Contributors v
Preface xiii
Table Of Contents xiv
I Basics 1
1 Anatomy and Cellular Functions of the Liver 2
Abbreviations 2
Introduction 2
Gross Anatomy 2
Development of the Liver 4
Microscopic Architecture 5
Portal Tracts and the Biliary System 5
The Biliary Tree 7
Cholangiocytes 8
Peribiliary Glands 9
Portal Tract Mesenchyme 9
Lobular and Acinar Functional Units 9
Hepatocytes 10
Plasma Membrane 10
Nucleus 11
Endoplasmic Reticulum, Ribosomes, and Golgi Apparatus 11
Mitochondria 12
Lysosomes 12
Peroxisomes 13
Cytoplasmic Contents 13
Cytoskeleton and Cytomatrix 13
The Hepatic Sinusoid 13
Sinusoidal Endothelial Cells 14
Kupffer Cells 16
Stellate Cells 16
Liver-Associated Lymphocytes 18
Innervation 18
Heterogeneity 18
Conclusion 19
References 19
References 19.e1
2 Bile Acids and Bile Flow 20
Abbrevations 20
Introduction 20
Pathways of Bile Acid Synthesis From Cholesterol 20
Bile Acid Conjugation 24
Formation of Secondary Bile Acids 25
Regulation of Bile Acid Synthesis 25
Defects in Bile Acid Synthesis Causing Metabolic Liver Disease and Syndromes of Fat-Soluble Vitamin Malabsorption 26
Defects Involving Reactions to the Steroid Nucleus 26
Cholesterol 7α-Hydroxylase Deficiency 27
Oxysterol 7α-Hydroxylase Deficiency 27
3β-Hydroxy-Δ5 C27-Steroid Oxidoreductase Deficiency 28
Δ4-3-Oxosteroid 5β-Reductase (AKR1D1) Deficiency 29
Defects Involving Reactions Leading to Side Chain Modification 31
Sterol 27-Hydroxylase Deficiency: Cerebrotendinous Xanthomatosis 31
2-Methylacyl CoA Racemase Deficiency 32
Side Chain Oxidation Defect in the 25-Hydroxylation Pathway 32
Peroxisomal Disorders 32
Bile Acid-CoA Conjugation Defects 33
Other Disorders Influencing Bile Acid Synthesis and Metabolism 34
Bile Acids as Signaling Integrators of Metabolism 34
Enterocyte Bile Acid Physiology 34
Muscle and Brown Adipose Tissue Metabolism 35
Bile Acid Changes After Bariatric Surgery 35
Bile Acid Signaling as a Treatment for Nonalcoholic Steatohepatitis 35
Conclusion 36
References 36
References 36.e1
3 Intestinal Microbiome and the Liver 37
Abbreviations 37
Historical Perspective and Technology Development 37
General Principles and the Conceptual Construct: the Gut-Liver Axis in Homeostasis and Implications for Liver Diseases 39
Intestinal Barrier 39
How Does the Host Maintain Homeostasis With Continued Exposure to an Enormous Microbial Load? 41
Interactions of the Liver With the Intestinal Microbiome 42
How Is the Intestinal Microbiome Related to Liver Disease? 42
Mucosal and Liver Tolerance 42
Liver and Pattern Recognition Receptors 43
Microbiota, Hepatic Inflammation, and Fibrosis 44
The Intestinal Microbiota as a Mediator of Hepatic Inflammation 45
The Intestinal Microbiota as a Mediator of Hepatic Fibrosis 46
Germ-Free Models: Implications for the Intestinal Microbiome, the Intestine, and the Liver 47
Role of the Intestinal Microbiome in Specific Liver Diseases 47
Obesity and the Intestinal Microbiome 47
The Intestinal Microbiome and Nonalcoholic Fatty Liver Disease 47
Human Studies 48
Functional and Mechanistic Insights From the Intestinal Microbiome in NAFLD 50
The Intestinal Microbiome and Alcoholic Liver Disease 53
Intestinal Dysbiosis in Alcoholic Liver Disease 53
Corollaries of Intestinal Dysbiosis in Alcoholic Liver Disease 54
The Intestinal Microbiome and Autoimmune Liver Diseases 55
Primary Sclerosing Cholangitis and the Intestinal Microbiome 56
Autoimmune Hepatitis and the Intestinal Microbiome 56
The Intestinal Microbiome in Cirrhosis and Associated Complications 56
Intestinal Dysbiosis in Experimental Fibrosis and Cirrhosis 56
Intestinal Dysbiosis and Cirrhosis in Clinical Practice 57
Clinical and Metabolic Corollaries of Intestinal Dysbiosis in Cirrhosis 59
The Intestinal Microbiome and Hepatocellular Carcinoma 60
The Intestinal Microbiome and Liver Transplant 61
The Intestinal Microbiome and Liver Regeneration 62
Interventions to Modulate the Intestinal Microbiome 62
Conclusion 65
References 65
References 65.e1
4 The Liver as an Immune Organ 66
Abbreviations 66
Introduction 66
Immune Cell Populations and Their Function in the Liver 66
Neutrophils 66
Monocytes and Macrophages 66
Dendritic Cells 68
Natural Killer Cells and Natural Killer T Cells 69
T-Cell Populations 69
B Cells 69
Functions of the Immune System in the Liver 69
Innate Immunity 69
Pattern Recognition Receptors 69
Chemokines, Cytokines, and Interferons 71
Antigen Presentation and Adaptive Immunity 71
Inflammation and Innate Immunity in Liver Diseases 72
Immune Response in Viral Hepatitis 72
Hepatitis C Virus 73
Hepatitis B Virus 74
Hepatitis D Virus 74
Hepatitis A Virus and Hepatitis E Virus 74
Autoimmunity in Liver Diseases 75
Liver Fibrosis and Immune Response 75
Inflammation and Immunity in Liver Cancer 75
Conclusion 76
References 76
References 76.e1
5 The Liver’s Response to Injury 77
Abbreviations 77
Introduction 77
Hepatic Inflammation as a Driver of Hepatic Fibrosis 77
Cell Types That Participate in Inflammation and Fibrosis 78
Hepatocytes 78
Hepatic Stellate Cells 78
Macrophages 80
Natural Killer Cells and Natural Killer T Cells 80
T and B Lymphocytes 81
Key Pathways in Hepatic Inflammation and Fibrosis 81
Cell Death–Triggered Inflammation and Fibrosis 81
Toll-like Receptor Pathway 81
Chemokines in Liver Inflammation and Fibrosis 82
MicroRNAs in Hepatic Inflammation and Fibrosis 82
MicroRNAs as Modulators of Liver Inflammation 82
MicroRNAs as Modulators of Liver Fibrosis 83
Conclusion 83
References 83
References 83.e1
6 Stem Cells and Hepatocyte Transplantation 84
Abbreviations 84
Introduction 84
Preclinical and Background Studies Enabling Clinical Translation 86
Integration of Hepatocytes in the Recipient’s Liver 86
Occlusion of the Portal Veins With Donor Cells 86
Breeching the Endothelial Barrier 87
Integration Into Hepatic Chords 87
Remodeling of Liver 87
Initial Clinical Studies 87
Hepatocyte Transplantation for Acute Liver Failure 88
Hepatocyte Transplantation for Metabolic Liver Disease 89
Patient Selection for Hepatocyte Transplantation 90
Challenges and Solutions Regarding Hepatocyte Transplantation 91
Sources of Hepatocytes and Hepatocyte-Like Cells 91
Identifying the Correct Niche Signals for Hepatocytes 92
Alternative Sources of Hepatocytes 92
Embryonic Stem Cells 92
Induced Pluripotent Stem Cells 92
Directly Reprogrammed Hepatocyte-Like Cells 93
Adult Hepatic Progenitor Cells 93
Organoid Culture of Hepatocyte Cells 93
Assessment of Hepatic Viability and Function Before Transplant 94
Methods for Storage of Cells After Isolation and Before Transplant 94
Tracking Donor Cells and Assessment of Cell Function After Transplant 94
Optimal Immunosuppressive Therapy 95
Engraftment and Long-Term Repopulation of Recipient Liver With Donor Cells 95
Conclusion 97
References 97
References 97.e1
II Management and Assessment of Liver Disease 98
7 Approach to Jaundice and Abnormal Liver Function Test Results 99
Abbreviations 99
Introduction 99
Historical Perspective: 100 Years of Liver Function Tests 99
Liver Functions Tests: Anatomic, Physiologic, and Pathologic Basis 100
Tests That Assess the Function of Biliary Organic Anion Transport 100
Bilirubin 100
Urinary Bilirubin and Urobilinogen 101
Bile Acids 101
Tests That Assess Hepatobiliary Injury 102
Aminotransferases 102
Alkaline Phosphatase 103
γ-Glutamyl Transpeptidase 104
Other Enzymes 104
Tests That Assess Hepatic Synthetic Function 104
Albumin 104
Prothrombin Time and International Normalized Ratio 104
Clinical Approach to Abnormal Liver Function Test Results 105
Epidemiology and Outcome of Liver Function Tests With Abnormal Results 105
When and Whom to Evaluate Further 105
Normal Reference Range and Definition of Abnormal Liver Enzyme Levels 105
Establishing Abnormal Results 105
Identification of Pattern of Abnormalities: A Clue to the Underlying Cause 106
Cholestatic and Hepatocellular Injury 106
Jaundice 109
Acute-on-Chronic Liver Function Test Abnormalities 109
Liver Function Test Results and Severity of Liver Injury: An Association 110
Estimation of Fibrosis Based on Mathematical Scores 110
Noninvasive Biomarkers of Fibrosis 111
Isolated Biomarkers 111
Fibrosis Biomarker Panels 111
Correlations Between Liver Function Test Results and Clinical Features 111
Patients With Abnormal Liver Function Test Results: What to Ask and Assess 113
Clinical Examination: What to Look for 114
Signs of Chronic Liver Disease 114
Signs of Underlying Cause 115
Clinical Signs of Portal Hypertension 115
Clinical Signs of Hepatic Insufficiency (Liver Failure) 115
Further Testing: Which Tests, as Well as When to Perform Them and What to Look for 115
Laboratory Tests 115
Imaging 115
Liver Biopsy 116
When a Diagnosis Is Not Established: How to Monitor Patients 116
Conclusion 116
References 116
References 116.e1
8 Noninvasive Assessment of Disease Progression 117
Abbreviations 117
Introduction 117
The Value and Meaning of Fibrosis Staging and the Role of Liver Biopsies 117
Approach to Noninvasive Testing 118
Pathophysiology of Common Serologic Tests for Liver Fibrosis 118
AST/ALT Ratio 118
AST/Platelet Ratio and Fibrosis-4 Indexes 118
Nonalcoholic Fatty Liver Disease Fibrosis Score 119
FibroMeter 119
FibroSure/FibroTest 120
HepaScore 120
FibroSpect 120
Enhanced Liver Fibrosis Score 120
Radiologic Tests for Liver Fibrosis 120
Ultrasound 120
Computed Tomography and Magnetic Resonance Imaging 121
Vibration-Controlled Elastography 121
Magnetic Resonance Elastography 122
Acoustic Radiation Force Impulse Elastography 122
Disease-Specific Considerations 122
Hepatitis C 122
Hepatitis B 124
Nonalcoholic Fatty Liver Disease 124
Cholestatic Diseases 125
Alcoholic Liver Disease 126
Other Liver Diseases 126
Conclusion 126
References 126
References 126.e1
9 Molecular and Genetics-Based Diagnostics 127
Abbreviations 127
Introduction 127
Monogenic Liver Diseases 127
Hereditary Hemochromatosis 127
Wilson Disease 127
α1-Antitrypsin Deficiency 128
Cystic Fibrosis–Associated Liver Disease 129
Familial Intrahepatic Cholestasis 129
Hereditary Hyperbilirubinemias 131
Polygenic Liver Diseases 131
Intrahepatic Cholestasis of Pregnancy as Example 131
Gallstone Disease 132
Common ABC Transporter Risk Variants 132
Drug-Induced Liver Injury 132
Chronic Viral Hepatitis 133
Fatty Liver Disease 134
Liver Cirrhosis 134
Next-Generation Sequencing 134
References 135
References 135.e1
10 Imaging in Assessment of Liver Disease and Lesions 136
Abbreviations 136
Introduction 136
Diffuse Liver Disease 136
Active Inflammation 136
Chronic Hepatitis and Cirrhosis 136
Focal Hepatic Lesions 140
Imaging Modalities 140
Ultrasound 140
Computed Tomography 140
Magnetic Resonance Imaging 142
Hepatobiliary-Specific Contrast Agents 142
Benign Lesions 142
Solid 142
Hemangioma 142
Imaging 142
Focal Nodular Hyperplasia 143
Imaging 143
Liver Cell Adenoma 143
Imaging 145
Cystic 147
Cystic Bile Duct Hamartoma 147
III Clinical Consequences of Chronic Liver Disease 202
14 Neurologic Consequences of Liver Disease 203
Abbreviations 203
Introduction 203
Historical Background 203
Pathogenesis of Hepatic Encephalopathy 203
Ammonia 203
Inflammation 204
Microbiota 204
Neuromodulators 204
Manganese Deposition 204
Spectrum and Nomenclature of Hepatic Encephalopathy 205
Spectrum of Neurocognitive Impairment in Cirrhosis 205
Importance of Hepatic Encephalopathy 206
Overt Hepatic Encephalopathy 206
Covert Hepatic Encephalopathy 206
Diagnosis of Hepatic Encephalopathy 206
Diagnosis of Overt Hepatic Encephalopathy 207
Physical Examination in Patients With Overt Hepatic Encephalopathy 207
Brain Imaging for the Diagnosis of Hepatic Encephalopathy 207
Abdominal Imaging 207
Miscellaneous Imaging 208
Ammonia Levels for the Diagnosis of Overt Hepatic Encephalopathy 208
Clinical Classification of Hepatic Encephalopathy Into Normal and Overt Hepatic Encephalopathy 208
Diagnosis of Covert Hepatic Encephalopathy 208
Neuropsychological Examination and Psychometric Testing for the Diagnosis of Covert Hepatic Encephalopathy 208
Paper and Pencil Tests 208
Neurophysiologic Tests 209
Limitations of Currently Available Psychometric and Neurophysiologic Tests 210
Computerized Tests 210
Management and Treatment of Hepatic Encephalopathy 210
Goals for the Management of Hepatic Encephalopathy 210
Nonabsorbable Disaccharides 212
Antibiotics 212
Neomycin 212
Rifaximin 212
Metronidazole, Vancomycin, and Paromomycin 212
Probiotics 213
Management of Acute Overt Hepatic Encephalopathy 213
Nonabsorbable Disaccharides 213
Antibiotics 214
Neomycin 214
Rifaximin 214
Probiotics 214
Management of Covert Hepatic Encephalopathy 214
Nonabsorbable Disaccharides 215
Antibiotics 215
Probiotics 215
Secondary Prevention of Overt Hepatic Encephalopathy 216
Other Therapies 216
l-Ornithine-l-Aspartate 216
Sodium Benzoate 216
l-Orthinine Phenylacetate and Glycerol Phenylbutyrate 216
Flumazenil 216
Branched-Chain Amino Acid–Enriched Formulations 216
Dopaminergic Agents 216
Zinc Repletion 217
Disaccharidase Inhibitors 217
Albumin 217
Newer Agents 217
Hepatic Encephalopathy Resistant to Therapy or Persistent Hepatic Encephalopathy 217
Liver Support Systems 218
Closure of Portosystemic Shunts 218
Nutrition 218
Liver Transplantation 218
References 219
References 219.e1
15 Ascites and Hyponatremia 220
Abbreviations 220
Introduction 220
Epidemiology 220
Pathogenesis 220
Sinusoidal Hypertension 220
Plasma Volume Expansion 220
Clinical Features 221
Diagnosis 221
Differential Diagnosis 222
Associated Conditions 224
Disease Complication: Spontaneous Bacterial Peritonitis 224
Epidemiology 224
Clinical Picture 224
Diagnosis 224
Treatment 225
Prophylaxis 226
Treatment of Ascites 227
Sodium Restriction 227
Diuretics 228
Complications 228
Contraindications 228
Large-Volume Paracentesis 228
Complications 229
Contraindications 229
Transjugular Intrahepatic Portosystemic Shunt 229
Complications 230
Contraindications 230
Peritoneovenous Shunt and Other Shunting Devices 230
Treatment of Conditions Associated With Ascites 230
Treatment of Hyponatremia 230
Treatment of Hepatic Hydrothorax 231
Prognosis and Natural History 231
Conclusion 232
References 232
References 232.e1
16 Portal Hypertension Related to Bleeding 233
Abbreviations 233
Anatomy of the Portal Venous System 233
Physiologic Principles of the Portal Circulation 233
Portal Hypertension 234
Definition 234
Pathogenesis of Portal Hypertension 234
Physiologic Principles of Portal Hypertension 234
Increased Intrahepatic Resistance 235
Increased Splanchnic Blood Flow and the Hyperdynamic Circulatory State 236
Portosystemic Collateral Circulation in Portal Hypertension 237
Clinical Features of Portal Hypertension 238
Portosystemic Collaterals 238
Splenomegaly 239
Assessment of Portal Venous System 239
Upper Gastrointestinal Endoscopy 239
Capsule Endoscopy 241
CT Scan 241
Magnetic Resonance Imaging 241
Ultrasonography 242
Endoscopic Ultrasound 242
Ultrasound Transient Elastography 242
Ultrasound Real-Time Shear Wave Elastography 242
Measurement of Portal Venous Pressure 243
Hepatic Vein Pressure Gradient Measurement 243
Direct Transhepatic Portal Venous Pressure Measurement 243
Measurement of Variceal Pressure and Flow 244
Measurement of Portal Venous and Hepatic Artery Blood Flow 244
Classification of Diseases Causing Portal Hypertension 244
Portal Hypertension Secondary to Increased Portal Venous Blood Flow 244
Splanchnic Arteriovenous Fistula 244
Splenomegaly 244
Portal Hypertension Secondary to Increased Resistance to Portal Blood Flow 245
Extrahepatic Portal Vein Thrombosis 245
Idiopathic Portal Hypertension 245
Schistosomiasis 246
Alcoholic Liver Disease 246
Nonalcoholic Cirrhosis 247
Fibrocystic Liver Disease 247
Nodular Regenerative Hyperplasia of the Liver 247
Partial Nodular Transformation of the Liver 247
Hematologic Disease 248
Hepatocellular Carcinoma 248
Metastatic Carcinoma to the Liver 248
Hereditary Hemorrhagic Telangiectasia 248
Sarcoidosis 248
Cystic Fibrosis 248
Cardiac Disease 248
Portal Hypertension–Related Bleeding 248
Selection of Patients to Screen for Esophageal Varices 248
Risk Factors and Natural History of Portal Hypertension–Related Bleeding 248
Portal Hypertensive Gastropathy and Gastric Vascular Ectasia 249
Bleeding From Other Sites in the Gastrointestinal Tract 250
Diagnosis of Portal Hypertension–Related Bleeding 250
Treatment Options for Portal Hypertension–Related Bleeding 251
Pharmacologic Treatment 251
Vasopressin Analogs 251
Somatostatin Analogs 251
β-Adrenergic Blocking Drugs 251
Combined α- and β-Adrenergic Blockers 252
Nitrates 252
Drugs That Decrease Intrahepatic Vascular Resistance 252
Endoscopic Therapy 252
Sclerotherapy 252
Endoscopic Variceal Ligation 253
Cyanoacrylate Glue Injection 253
Detachable Snares and Clips 253
Radiologic Procedures 254
Transjugular Intrahepatic Portosystemic Shunts (TIPS) 254
Balloon-Occluded Retrograde Transvenous Obliteration of Varices (BRTO) 254
Balloon Tamponade 254
Esophageal Stents 254
Surgical Management of Portal Hypertension 255
Decompressive Shunts 255
Portocaval Shunts 255
Selective Shunts 255
Partial Portosystemic Shunts 255
Mensenterico–Portal Venous Bypass 255
Approach to the Patient With Portal Hypertension–Related Bleeding 255
Esophageal Variceal Bleeding 255
Preprimary Prophylaxis of Variceal Bleeding 255
Primary Prophylaxis: Prevention of First Variceal Bleed 257
Small Esophageal Varices. 257
Large Esophageal Varices. 257
Control of Acute Esophageal Variceal Bleeding 257
General Measures 257
Specific Measures 258
Secondary Prophylaxis: Prevention of Recurrent Esophageal Variceal Bleeding 259
Gastric Varices 259
Portal Hypertensive Gastropathy and Gastric Vascular Ectasia 260
Ectopic Varices 261
Conclusion 261
References 261
References 261.e1
17 Renal Failure in Cirrhosis 262
Abbreviations 262
Introduction 262
Measurement of Renal Function 262
The Concept of Acute Kidney Injury 262
The RIFLE Diagnostic Criteria for Acute Kidney Injury 263
The Acute Kidney Injury Network (AKIN) Diagnostic Criteria for Acute Kidney Injury 264
The Kidney Disease: Improving Global Outcomes (KDIGO) Clinical Practice Guidelines 264
The Diagnostic Criteria of the ADQI and the International Ascites Club (IAC) for Acute Kidney Injury in Cirrhosis 264
The Application of the Various AKI Diagnostic Criteria to Cirrhotic Patients 265
The RIFLE Diagnostic Criteria 265
The AKIN Diagnostic Criteria 266
The ADQI-IAC Diagnostic Criteria for Acute Kidney Injury 266
How Well Do These Various Diagnostic Criteria of AKI Serve Cirrhotic Patients? 267
Revised Consensus Recommendations of the IAC on the Diagnosis of Acute Kidney Injury in Cirrhosis 267
The Diagnostic Criteria for Hepatorenal Syndrome 268
Pathophysiology of Acute Kidney Injury and Hepatorenal Syndrome 269
Splanchnic and Systemic Arterial Vasodilatation of Advanced Cirrhosis and Ascites 269
The Consequences of Splanchnic and Systemic Arterial Vasodilatation 270
The Role of Portal Hypertension Independent of Hemodynamic Changes 271
Renal Changes in Advanced Cirrhosis 271
Cardiac Insufficiency 271
The Role of Inflammation 271
Approach to a Patient With Cirrhosis Who Presents With Renal Dysfunction 272
Differential Diagnoses of Acute Kidney Injury 273
Prerenal Azotemia 273
Intrinsic Renal Diseases 273
Non–Volume Responsive Functional Acute Kidney Injury Including Hepatorenal Syndrome 274
Treatment of AKI 274
General Measures 274
Albumin 275
Vasoconstrictors 275
Terlipressin 275
Norepinephrine 276
Midodrine 277
Nonpharmacologic Treatments 278
Liver Transplant 278
Prevention of Hepatorenal Syndrome–Acute Kidney Injury 278
The Use of Albumin in Patients With Bacterial Infection 278
Antibiotic Prophylaxis Against Infection 279
Patients With Alcoholic Hepatitis 279
Prophylaxis Against Circulatory Dysfunction 279
Avoidance of Nephrotoxic Drugs 279
Judicious Use of Diuretics 279
Chronic Kidney Disease in Cirrhosis 280
Conclusion 280
References 280
References 280.e1
18 Cardiopulmonary Complications of Cirrhosis 281
Abbreviations 281
Introduction 281
Definition and Diagnosis of Cirrhotic Cardiomyopathy 281
Electrocardiography 281
Echocardiography 281
Tissue Doppler Imaging 282
Stress Testing 282
Serologic Markers 282
Natural History and Epidemiology 282
Pathogenesis of Cirrhotic Cardiomyopathy 282
Cardiomyocyte Membrane Alterations 282
Nitric Oxide and Carbon Monoxide Alterations 282
Inflammatory Mediators: Tumor Necrosis Factor α Signaling and Endocannabinoids 282
Clinical Features 282
Management of Cirrhotic Cardiomyopathy 283
Pulmonary Vascular Complications in Liver Disease 284
The Spectrum of Pulmonary Abnormalities in Liver Disease 284
Hepatopulmonary Syndrome 284
Definition 284
Epidemiology 284
Pathogenesis 284
Clinical Features 286
Diagnosis 286
Therapy 288
Prognosis and Natural History 289
Portopulmonary Hypertension 289
Definition 289
Epidemiology 289
Pathogenesis 290
Clinical Features 290
Diagnosis 290
Treatment 290
Liver Transplant 291
Prognosis and Natural History 292
Coexistence of Hepatopulmonary Syndrome and Portopulmonary Hypertension 292
Conclusion 292
References 292
References 292.e1
19 The Hemostatic and Hematopoietic System in Liver Disease 293
Abbreviations 293
Introduction 293
The Hemostatic System: Normal Physiology and Pathophysiology in Liver Disease 293
Bleeding in Cirrhosis Patients 295
Epidemiology 295
Therapy 295
Thrombosis in Cirrhosis Patients 297
Epidemiology 297
Therapy 297
Other Abnormalities in the Hematopoietic System in Liver Disease 298
Erythrocytes 298
Platelets 299
Leukocytes 299
Conclusion 299
References 300
References 300.e1
20 Acute Liver Failure 301
Abbreviations 301
Introduction 301
Causes and Epidemiology 301
Hepatotropic Viruses 303
Hepatitis A 303
Hepatitis B 304
Hepatitis D 304
Hepatitis C 304
Hepatitis E 304
Non–Hepatitis A-E Viruses 304
Systemic Viral Infections 304
Drug-Induced Acute Liver Failure 305
Acetaminophen 305
Biologic Toxins 307
Metabolic Causes of Acute Liver Failure 308
Autoimmune Acute Liver Failure 308
Ischemic Causes of Acute Liver Failure 308
Diffuse Malignant Infiltration of the Liver 308
Pathogenesis of the Syndrome of Acute Liver Failure 308
Early Presentation of the Acute Injury 308
Failure of Liver Function 309
Failure of Hepatobiliary Excretion 309
Failure to Metabolize Toxic Substances 309
Failure of Intermediary Metabolism 309
Failure of Biosynthetic Function of the Liver 309
Effects of Acute Liver Failure on Extrahepatic Systems 309
Microcirculatory Dysfunction 310
Cardiovascular Consequences 310
Pulmonary Consequences 310
Renal and Electrolyte Disturbances 311
Hematologic Disturbances 311
Breakdown of Host Immune Defenses 311
Gastrointestinal Consequences 312
Neurologic Consequences 312
Hepatic Encephalopathy 313
Intracranial Hypertension and Cerebral Edema 313
Management of Acute Liver Failure 314
General Management 314
Initial Evaluation and Triage 314
Therapies for Liver Injury 314
N-Acetylcysteine for Acetaminophen Overdose 314
N-Acetylcysteine for Nonacetaminophen Acute Liver Failure 316
Other Cause-Specific Therapies 316
Management of Fluids, Electrolytes, and Acid-Base Abnormalities 316
Management of Nutrition 317
Prevention and Management of Specific Complications of Acute Liver Failure 317
Bleeding 317
Cardiovascular Derangements 317
Pulmonary Complications and Ventilatory Support 317
Prevention and Management of Infection 318
Management of Acute Kidney Injury 318
Multiorgan System Failure 319
Hepatic Encephalopathy, Cerebral Edema, and Intracranial Hypertension 319
Methods to Protect the Liver From Injury and Promote Liver Regeneration 321
Orthotopic Liver Transplantation 321
Assessment of Prognosis: When to Initiate Orthotopic Liver Transplantation Evaluation 322
References 323
References 323.e1
21 Acute-on-Chronic Liver Failure 324
Abbreviations 324
Introduction 324
Definition 324
Precipitating Events 325
Prevalence 326
Natural History 326
Economic Burden 326
Pathophysiology 326
Extrahepatic Organ Failure 327
Renal Failure 329
Hepatic Encephalopathy 329
Cardiovascular Dysfunction 329
Respiratory Failure 329
Coagulation Dysfunction 329
Prognostic Models 330
Potential Prognostic Biomarkers 330
Management of ACLF 330
General Measures 330
Liver Support Devices 331
Potential Hepatic Regenerative Therapy 331
Liver Transplantation 331
Conclusion 332
References 332
References 332.e1
IV Specific Diseases 333
22 Epidemiology and Pathogenesis of Alcoholic Liver Disease 334
Abbreviations 334
Introduction 334
Epidemiology of Alcoholic Liver Disease 335
Ethanol Metabolism 335
Alcoholic Fatty Liver 337
Alcoholic Steatohepatitis 338
Infiltration of Neutrophils 338
Activation of Kupffer Cells and Infiltrating Macrophages 339
Activation of Natural Killer T Cells 339
Activation of Adaptive Immunity 339
Inflammatory Mediators (Cytokines and Chemokines) 339
Alcoholic Hepatitis 339
Alcoholic Fibrosis and Cirrhosis 340
Alcoholic Liver Cancer 341
Risk Factors for Alcoholic Liver Disease 341
Animal Models of Alcoholic Liver Disease 341
Chronic Ethanol Feeding 341
“Second-Hit” Model 341
Chronic-Plus-Binge Ethanol Feeding 342
High-Fat Diet (HFD) and Ethanol Feeding 342
Comorbid Conditions 343
Therapeutic Targets 343
Conclusion 344
References 344
References 344.e1
23 Natural History and Cofactors of Alcoholic Liver Disease 345
Abbreviations 345
Introduction 345
Pattern, Dosage, and Types of Alcohol Consumption and Risk of Alcoholic Liver Disease 345
Sex 346
Dietary Factors and Risk of Alcoholic Liver Disease 346
Genetic Risk Factors for Alcoholic Liver Disease 346
Genes Influencing Alcohol Metabolism 346
Cytokine-Related Genes and Endotoxin Receptor 347
PNPLA3 and Alcoholic Liver Disease 347
Oxidative Stress–Related Genes 347
Natural History of Alcoholic Liver Disease 347
Alcoholic Fatty Liver 347
Alcoholic Hepatitis 348
Alcoholic Cirrhosis 348
Special Considerations for Factors Influencing the Natural History of Alcoholic Liver Disease 348
Hepatitis C 348
Hepatitis B 349
Obesity and Nonalcoholic Fatty Liver Disease 349
Toxicity of Acetaminophen and Other Drugs 349
Obstructive Sleep Apnea 349
Conclusion 350
References 350
References 350.e1
24 Prevention and Management of Alcoholic Liver Disease 351
Abbreviations 351
Prevention of Alcoholic Liver Disease 351
Primary Prevention 351
Secondary Prevention 351
Screening for Alcohol Consumption 351
Tertiary Prevention 352
Treatment of Alcoholic Liver Disease 352
Diagnosis of Alcoholic Hepatitis 352
Assessment of Disease Severity 353
Modified Discriminant Function Score 353
Model for End-Stage Liver Disease Score 354
Child-Turcotte-Pugh Score 354
Glasgow Alcoholic Hepatitis Score 354
Age, Bilirubin Concentration, International Normalized Ratio, Creatinine Concentration 354
Lille Score 354
Comparison of Scoring Systems 355
Liver Histology 355
Emerging Scoring Systems 355
Treatment of Severe Episodes of Alcoholic Hepatitis 355
Corticosteroids 355
Efficacy of Corticosteroids in Alcoholic Hepatitis Treatment 355
Current Status of Corticosteroid Therapy in the Management of Alcoholic Hepatitis 356
Mechanism of Action 356
Use of Corticosteroids in Practice 357
Contraindications for Corticosteroid Therapy 357
Infections in Patients Receiving Corticosteroid Therapy 357
Pentoxifylline 358
Current Status of Pentoxifylline in the Treatment of Alcoholic Hepatitis 358
Tumor Necrosis Factor α Inhibitors 359
Antioxidants 359
Hepatic Mitogens and Growth Factors 359
Propylthiouracil 359
Albumin Dialysis and Miscellaneous Therapies 359
General Management Measures 359
Management of Alcohol Withdrawal 359
Management of Complications of Cirrhosis 359
Management of Malnutrition 359
Enteral Supplementation 360
Parenteral Supplementation 360
Alcohol Abstinence 360
Behavioral Therapies 361
Pharmacologic Therapies 361
Emerging Pharmacologic Treatments 361
Gut-Liver Axis 361
Inflammatory Cascade 362
Oxidative Stress 362
Apoptosis and Liver Regeneration 362
Liver Transplant in Alcoholic Hepatitis 362
Controversy Surrounding Liver Transplant in Alcoholic Hepatitis 362
Six Months’ Abstinence Rule 363
Beneficial Efficacy of Early Liver Transplant in Alcoholic Hepatitis 363
Selection Criteria and Impact on the Donor Pool 363
Barriers to Liver Transplant in Alcoholic Hepatitis 364
Treatment of Mild Episodes of Alcoholic Hepatitis 364
Treatment of Alcoholic Cirrhosis 364
Alcohol Abstinence and Monitoring 364
Management of Cirrhosis and Its Complications 364
Pharmacologic Treatments 364
Antioxidants 364
Propylthiouracil 365
Colchicine 365
Management of Malnutrition 365
Enteral Supplementation 365
Liver Transplant for Alcoholic Cirrhosis 365
Alcohol Consumption and Dependence 365
Evaluation for Comorbidities 365
Psychosocial Evaluation 366
Posttransplant Recidivism 366
Graft and Patient Outcomes 366
Conclusion 368
References 368
References 368.e1
25 Pathogenesis of Nonalcoholic Fatty Liver Disease 369
Abbreviations 369
Introduction 370
Making Foie Gras 371
Nonalcoholic Fatty Liver Disease: An Adiposopathy 374
Nonalcoholic Fatty Liver Disease and Insulin Resistance: The Chicken and Egg Paradox 375
Oxidative Stress: Overburning Fat 378
Lipotoxicity: The Ugly and the Beast 380
Endoplasmic Reticulum Stress: A Tree Born Crooked Cannot Straighten Its Trunk 381
Autophagy: The Ouroboros Housekeeper 383
Sterile Inflammation: When the Aggressor Is Fat 383
Dysbiota: The Unwanted Guests 385
Cell Death: A Cry for Help 387
Fibrogenesis: To Heal or to Scar 387
Conclusion 390
References 390
References 390.e1
26 Epidemiology, Natural History, and Evaluation of Nonalcoholic Fatty Liver Disease 391
Abbreviations 391
Introduction 391
Epidemiology 392
Prevalence 392
Causes of and Conditions Associated With Nonalcoholic Fatty Liver Disease 393
Natural History of Nonalcoholic Fatty Liver Disease 394
Progression to Advanced Liver Fibrosis and Cirrhosis in Nonalcoholic Fatty Liver Disease 394
Nonalcoholic Fatty Liver Disease and the Risk of Hepatocellular Carcinoma 395
Modifiers of Progression of Nonalcoholic Fatty Liver Disease 395
Environmental Modifiers of Nonalcoholic Fatty Liver Disease 396
Genetic Modifiers of Nonalcoholic Fatty Liver Disease 396
Clinical Features of Nonalcoholic Fatty Liver Disease 398
Symptoms 398
Signs on Physical Examination 398
Routine Laboratory Abnormalities 399
Histopathologic Features of Nonalcoholic Fatty Liver Disease 399
Steatosis 399
Steatohepatitis 399
Fibrosis 399
Grading and Staging of the Severity of Nonalcoholic Fatty Liver Disease in Clinical Practice 399
Evaluation of Nonalcoholic Fatty Liver Disease 401
Diagnostic Approach to Nonalcoholic Fatty Liver Disease 401
Risk Stratification and Staging of Nonalcoholic Fatty Liver Disease 402
References 405
References 405.e1
27 Management of Nonalcoholic Fatty Liver Disease and Metabolic Syndrome 406
Abbreviations 406
Introduction 406
Associated Conditions 406
Treatment 406
Lifestyle Modifications 407
Exercise 407
Bariatric Surgery 408
Phlebotomy 408
Pharmacologic Treatment 408
Insulin-Sensitizing Medications 408
Antioxidants 409
Cytoprotective Agents 409
Statins 409
Weight Loss Medications 409
Novel Approaches 409
Conclusion 409
References 411
References 411.e1
28 Virology and Pathogenesis of Hepatitis C 412
Abbreviations 412
Introduction 412
Overview of the Virion 412
Model Systems 412
Structure and Function of the Viral Proteins 413
Hepatitis C Virus Structural Proteins 413
Core 413
Envelope Glycoproteins 413
p7 415
Hepatitis C Virus Nonstructural Proteins 415
NS2-3 Protease 415
NS3-4A Protease Complex 415
NS4B 415
NS5A 415
NS5B 415
The Virus and Its Life Cycle 415
Pathogenesis of Hepatitis C Virus Infection 419
Role of Innate and Adaptive Immunity 419
Acute Hepatitis C Virus Infection 419
Overview 419
Humoral Immunity 420
Cellular Immunity 420
Chronic Hepatitis C Virus Infection 422
Immunological Basis for Viral Persistence 422
Cellular Response to Chronic Hepatitis C Virus Infection 422
Immunoregulation 422
Cytotoxic T Cells 423
Viral Immune Escape Mutation 424
Vaccine Development in Hepatitis C Virus Infection 424
Mechanisms of Liver Injury in Hepatitis C Virus Infection 424
Overview 424
Virus-Mediated Injury 424
Immune-Mediated Liver Injury 424
T Cell–Mediated Injury 424
Chemokines in Recruitment of Immune Cells Into the Liver 425
Natural Killer Cells and Liver Injury 426
Fibrosis Progression 426
Conclusion 426
References 427
References 427.e1
29 Epidemiology, Natural History, and Diagnosis of Hepatitis C 428
Abbreviations 428
Discovery of Hepatitis C Virus 428
Hepatitis C Virus Transmission 429
Receipt of Infected Blood or Blood Products 429
Occupational Transmission Among Healthcare Workers 430
Healthcare Settings 430
Injection Drug Use 430
Sexual Transmission 430
Vertical Transmission 431
Other Exposures 431
Other Populations 431
Natural History of Acute Hepatitis C Infection 431
Incidence of Hepatitis C Virus Infection 432
Global 432
United States 432
Natural History of Chronic Hepatitis C 433
Hepatitis C Virus in Children 436
Prevalence of Hepatitis C Virus 436
United States 439
Hepatitis C Virus Genotypes 439
Diagnosis 441
Anti–Hepatitis C Virus Screening Assays 441
Confirmatory Testing 441
Detection of Current Hepatitis C Virus Infection 442
Screening to Prevent Hepatitis C Virus–Related Transmission and Disease 442
Primary Prevention 443
Conclusion 444
References 445
References 445.e1
30 Treatment of Hepatitis C 446
Abbreviations 446
Introduction 446
The Evolution of Hepatitis C Virus Therapies 446
Interferon-α 447
Ribavirin 447
Protease Inhibitors 450
Polymerase Inhibitors 450
NS5A Inhibitors 450
Goals of Hepatitis C Virus Treatment 450
Candidacy for Antiviral Therapy and Pretreatment Assessments 451
Hepatitis C Virus Treatment Regimens 452
Genotype-1 Regimens 453
Ledipasvir and Sofosbuvir 453
Paritaprevir/Ritonavir, Ombitasvir, and Dasabuvir 454
Simeprevir and Sofosbuvir 455
Grazoprevir and Elbasvir 456
Genotype-2 Regimens 456
Sofosbuvir and Ribavirin 456
Genotype-3 Regimens 456
Sofosbuvir and Ribavirin 457
Daclatasvir and Sofosbuvir 458
Genotype-4 Regimens 458
Sofosbuvir Plus Peginterferon-α and Ribavirin 458
Sofosbuvir and Ribavirin 458
Sofosbuvir and Ledipasvir 458
Paritaprevir/Ritonavir and Ombitasvir 458
Genotype-5 and Genotype-6 Regimens 458
Monitoring During and After Hepatitis C Virus Therapy 458
Direct-Acting Antiviral Resistance 459
Special Populations 461
Decompensated Cirrhosis 461
Post–Liver Transplantation 461
HIV-HCV Coinfection 461
Renal Disease 462
African Americans 462
Acute Hepatitis C Virus 462
Conclusion 463
References 463
References 463.e1
31 Virology and Pathogenesis of Hepatitis B 464
Abbreviations 464
Introduction 464
Hepatitis B Virus: Host and Model Systems 464
Hepatitis B Virus Biology 465
Hepatitis B Virus Structure, Genome, and Proteins 465
The Hepatitis B Virus Life Cycle 466
Hepatitis B Virus Entry 467
Hepatitis B Virus Capsid Transport Toward the Nucleus and Genome Release 467
Covalently Closed Circular DNA Formation 467
Capsid Formation, Maturation, and Secretion 467
Hepatitis B Virus Genome Variability 468
Immunopathogenesis of Hepatitis B Virus Infection 468
The Immunologic Profile of Hepatitis B Virus Control 468
Immune-Mediated Inhibition of Hepatitis B Virus Replication 470
The Impact of Age in the Pathogenesis of Hepatitis B Virus–Mediated Hepatitis 470
Liver Damage Pathogenesis During Hepatitis B Virus Infection 471
Conclusion 473
References 473
References 473.e1
32 Epidemiology, Diagnosis, and Natural History of Hepatitis B 474
Abbreviations 474
Introduction 474
Epidemiology 474
Burden of Disease 474
Changing Epidemiology 474
Mode of Transmission 475
Sexual 475
Percutaneous 475
Perinatal 476
Healthcare Associated 476
Diagnosis 476
Screening Recommendations 476
Hepatitis B Surface Antigen and Hepatitis B Surface Antibody 476
Hepatitis B Core Antigen and Hepatitis B Core Antibody 477
Hepatitis B e Antigen and Hepatitis B e Antibody 478
Hepatitis B Virus DNA 479
Hepatitis B Virus Genotyping 479
Liver Biopsy and Noninvasive Assessment of Liver Fibrosis 479
Natural History 479
Acute Infection 479
Clinical Manifestations 479
Laboratory Findings 479
Outcomes and Predictors 480
Chronic Infection 480
Clinical Manifestations 480
Extrahepatic Manifestations 481
Laboratory Findings 481
Phases of Chronic Infection 481
Immune-Tolerant Phase 481
Immune Clearance Phase (HBeAg-Positive Chronic Hepatitis) 482
Inactive Carrier Phase 482
Reactivation Phase (HBeAg-Negative Chronic Hepatitis) 482
Spontaneous HBsAg Clearance 483
Latent/Occult HBV Infection 483
Clinical Outcomes and Mediating Factors 483
Liver Cirrhosis and Decompensated Cirrhosis 483
Hepatocellular Carcinoma 483
Special Groups With Altered Natural History 484
Coinfection With Other Viruses 484
Immunosuppressed Patients 484
Conclusion 484
References 484
References 484.e1
33 Treatment of Hepatitis B 485
Abbreviations 485
Introduction 485
Indications for Treatment 485
Natural History 485
Phases of Chronic Hepatitis B Virus Infection 485
Progression to Cirrhosis and Hepatocellular Carcinoma 486
Treatment Indication 486
Initial Evaluation 487
Treatment End Points 487
Nucleoside/Nucleotide Analogs 488
Introduction 488
Tenofovir 488
Clinical Response 488
Resistance 488
Safety 490
Entecavir 491
Clinical Response 491
Resistance 491
Safety 491
Lamivudine 491
Adefovir 492
Telbivudine 492
Clinical End Points 492
General Management Issues in Treatment With Nucleoside/Nucleotide Analogs 492
Is a Finite Duration of Nucleoside/Nucleotide Analog Therapy Possible? 492
Prevention of Antiviral Drug Resistance 493
Pegylated Interferon 494
Efficacy in Hepatitis B e Antigen–Positive Patients 494
Efficacy in Hepatitis B e Antigen–Negative Patients 494
Selection of Patients for Pegylated Interferon Therapy 494
Hepatitis B e Antigen–Positive Patients 494
V Liver and Other Infections 535
37 HIV and the Liver 536
Abbreviations 536
Introduction 536
Epidemiology of Liver Disease in Those With HIV Infection 536
Mechanisms of Liver Disease Unique to HIV 537
Liver Biopsy and Noninvasive Markers of Liver Disease Severity 538
Noninvasive Fibrosis Assessment Using Biochemical Markers 539
AST to Platelet Ratio Index 539
Forns Index 539
Fibrosis 4 Score 539
Hospital Gregorio Maranon Indices 540
Models Utilizing Assays Available in Specialized Labs 540
Noninvasive Fibrosis Assessment Using Elastography or Imaging Modalities 540
Transient Elastography 540
Panels and Radiologic Modalities 540
Practical Application of Noninvasive Measures of Fibrosis 541
Noninvasive Markers in HIV-Infected Patients and Long-Term Outcomes 541
Viral Hepatitis in Those With HIV Infection 542
Hepatitis A 542
Hepatitis B 542
Hepatitis C 545
Hepatitis D 545
Hepatitis E 546
Epstein Barr Virus (EBV) 546
Cytomegalovirus (CMV) 547
Fungal Infections 547
Parasitic Infections 547
Bacterial Infections 548
Granulomatous Processes 548
Nonalcoholic Fatty Liver Disease 549
Hepatotoxic Drugs and Drug-Drug Interactions 550
Hepatic Malignancies Associated With HIV 553
AIDS Cholangiopathy 554
Liver Transplantation in HIV 555
Conclusion 555
Acknowledgments 555
References 555
References 555.e1
38 Liver Disease Associated With Systemic Viral Infection 556
Abbreviations 556
Introduction 556
Opportunistic Viral Infections (Table 38-1) 556
Epstein-Barr Virus 556
Cytomegalovirus 557
Herpes Simplex Virus 558
Varicella-Zoster Virus 560
Human Herpesviruses 560
Adenoviruses 561
Systemic Viral Infections (Table 38-2) 562
Human Immunodeficiency Virus 562
Influenza 562
Severe Acute Respiratory Syndrome Coronavirus 563
Parvovirus B19 563
Measles (Rubeola) Virus 563
Rubella 563
Enteroviruses 564
Viral Hemorrhagic Fevers (Table 38-3) 564
Dengue Fever 564
Yellow Fever 565
Lassa Fever 565
Ebola Virus Disease 566
Conclusion 567
References 567
References 567.e1
39 Parasitic Liver Disease 568
Abbreviations 568
Introduction 568
Schistosomiasis 569
Clinical Manifestations 570
Diagnosis 570
Treatment 571
Praziquantel 571
New Drugs 572
Control 572
Echinococcosis (Echinococcus granulosus and Echinococcus multilocularis) 572
Introduction 572
Immune Response 572
Clinical Manifestations 572
Diagnosis 573
Treatment 573
Amebiasis 573
Introduction 573
Clinical Manifestations 574
Asymptomatic Patients 574
Symptomatic Patients 574
Amebic Colitis 574
Amebic Liver Abscess 574
Diagnosis 574
Treatment 575
Hepatobiliary Parasites 575
Fascioliasis 575
Clinical Manifestations 575
Diagnosis 576
Treatment 576
Clonorchiasis and Opisthorchiasis 576
Clinical Manifestations 577
Diagnosis 577
Treatment 577
Capillaria hepatica 577
Ascaris lumbricoides 577
Human Immunodeficiency Virus and Parasitic Infections 578
Conclusion 578
References 578
References 578.e1
40 Bacterial and Miscellaneous Infections of the Liver 579
Abbreviations 579
Introduction 580
Bacterial Infections in Cirrhosis 580
Pyogenic Liver Abscess 580
Epidemiology 580
Etiology, Pathogenesis, and Pathophysiology 581
Microbiology 582
Clinical Manifestations, Diagnosis, and Management 582
Peliosis Hepatis 584
Disseminated Bacterial Infections With Involvement of the Liver 584
Miscellaneous Bacterial Infections 585
Conclusions 585
Bacterial Infections in Liver Transplant Recipients 585
Risk Factors for Bacterial Infections 585
Genetic Polymorphism as Risk Factors for Bacterial Infections in LT Recipients 586
Immune Tolerance in Liver Disease 586
Surgical Site Infections 587
Post–Liver Transplant SSIs 587
Biliary Tract Infections and Post–Liver Transplant Biliary Complications 587
Biliary Reconstruction 587
Biliary Strictures 587
Infected Biloma 588
Bile Leak 588
Multidrug Resistant Bacterial Infections in LT Population 588
Fungal Infection Prophylaxis in Liver Transplant Recipients 589
Candida Species 589
Aspergillus Species 589
Cryptococcus Species 589
Coccidioidomycosis 590
Pneumocystis (jiroveci) Pneumonia 590
Commonly Encountered Fungal Infections of the Liver 590
Pathogenesis of Liver Disease: the Bloodborne Route 590
Candida Species 591
Endemic Mycoses 591
Pathogenesis of Fungal Liver Disease 591
Diagnosis of Fungal Liver Disease 591
Treatment of Fungal Liver Disease 591
Conclusion 592
References 592
References 592.e1
VI Immune Diseases and the Liver 593
41 Autoimmune Hepatitis 594
Abbreviations 594
Introduction 594
History and Epidemiology 594
Genetic Factors in Disease Pathogenesis 594
Other Factors in Disease Pathogenesis 596
Association With Other Autoimmune Diseases 596
Animal Models of Autoimmune Hepatitis 596
Clinical Presentation 596
Laboratory Features 597
Autoantibodies 597
Antinuclear Autoantibodies 598
Smooth Muscle Autoantibodies 598
Soluble Liver Antigen/Liver Pancreas Antibodies 600
Liver Kidney Microsomal Autoantibodies 600
Other Autoantibodies 601
Histology 601
Diagnosis 601
Treatment and Management 603
General Principles 603
Remission Induction 603
Maintenance Therapy 604
Trial of Treatment Withdrawal 605
Experimental and Novel Treatment Approaches 605
Quality of Life 605
Special Patient Groups 606
Autoimmune Hepatitis in Children and Transition Into Adulthood 606
Autoimmune Hepatitis and Pregnancy 606
Autoimmune Hepatitis in Old Age 607
Comorbidity 607
Fulminant Autoimmune Hepatitis 607
Autoimmune Hepatitis and Cholestatic Liver Diseases (Overlap Syndromes) 607
Autoimmune Hepatitis and Primary Sclerosing Cholangitis 608
Autoimmune Hepatitis Features in Primary Biliary Cholangitis 608
Cancer Risk and Surveillance 608
Liver Transplantation 609
Delivery of Quality Care and Management Issues 609
Conclusion 609
References 609
References 609.e1
42 Primary Biliary Cholangitis 610
Abbreviations 610
Introduction 610
Epidemiology 610
Incidence and Prevalence 610
Age, Gender, and Race Variation 611
Geographic Clustering 611
Predisposing Factors 611
Etiopathogenesis 612
Immunogenicity 613
Role of Infectious Agents and Xenobiotics 613
Genetics 613
Clinical Manifestations 614
Asymptomatic Disease 614
Symptomatic Disease 614
Fatigue 614
Pruritus 615
Portal Hypertension 616
Extrahepatic Complications 616
Bone Disease 616
Fat-Soluble Vitamin Deficiency 616
Hyperlipidemia 616
Associated Autoimmune Diseases 616
Malignancies 616
Diagnosis 616
Laboratory Findings 617
Antimitochondrial Antibodies 617
Other Autoantibodies 617
Imaging Studies 617
Histology 618
Natural History of Untreated Patients 618
Treatment 619
Treatment of Primary Biliary Cholangitis 619
Ursodeoxycholic Acid 619
Other Older Drugs for Primary Biliary Cholangitis 621
New Agents 621
Obeticholic Acid 621
Fibrates 622
Immunomodulators 622
Stem Cell Transplantation 622
Treatment of Associated Symptoms and Conditions 622
Pruritus 622
Fatigue 622
Fat-Soluble Vitamin Deficiency 623
Hyperlipidemia 623
Metabolic Bone Disease 623
Liver Transplantation 623
Recurrent Primary Biliary Cholangitis 623
Prognosis 624
Laboratory Tests 624
Histology 624
Elastography 624
Mathematic Models 624
Special Populations 624
Antimitochondrial Antibody–Negative Primary Biliary Cholangitis 624
Overlap of Primary Biliary Cholangitis and Autoimmune Hepatitis 625
Conclusion 625
References 625
References 625.e1
43 Primary and Secondary Sclerosing Cholangitis 626
Abbreviations 626
Introduction 626
Variants of Sclerosing Cholangitis 626
Primary Sclerosing Cholangitis Variants 627
Large Duct Primary Sclerosing Cholangitis 627
Non-IBD Primary Sclerosing Cholangitis 627
Small Duct Primary Sclerosing Cholangitis 627
PSC–Autoimmune Hepatitis Overlap 627
Pediatric Primary Sclerosing Cholangitis 628
PSC in Non-Caucasian Populations 628
Immunoglobulin G4–Related Sclerosing Cholangitis 628
Secondary Sclerosing Cholangitis 628
Epidemiology 629
Pathogenesis 629
Genetic and Environmental Risks 629
Immune Responses in Primary Sclerosing Cholangitis 632
Leaky Gut Hypothesis 633
Primary Sclerosing Cholangitis Dysbiosis 633
Lymphocyte Trafficking 633
Toxic Bile Theory 634
Clinical Features 634
Diagnostic Criteria 634
Presenting Signs and Symptoms 635
Laboratory Tests 635
Imaging 636
Histology 637
Inflammatory Bowel Disease in PSC 637
Natural History 638
Risk Prediction in PSC 639
Malignancy Risks in Patients With PSC 640
Pretransplant Management 640
Pharmacotherapy 642
Endoscopic Management 644
Cancer Screening for Cholangiocarcinoma, Gallbladder Cancer, and Colorectal Cancer 644
Pruritus, Mineral Bone Disease, and Quality of Life 645
Transplant for Primary Sclerosing Cholangitis 645
Posttransplant Management of PSC 646
Conclusion 647
References 647
References 647.e1
VII Vascular Diseases of the Liver 648
44 Budd-Chiari Syndrome and Sinusoidal Obstruction Syndrome 649
Abbreviations 649
Introduction 649
Budd-Chiari Syndrome 649
Etiology 649
Clinical Manifestations 650
Diagnosis of BCS 650
Diagnosis of Underlying Cause of Thrombosis 651
Management 652
Anticoagulation 652
Management of Causes Leading to Thrombosis 652
Management of Portal Hypertension 652
Thrombolysis 652
Angioplasty and Stenting 652
Portosystemic Shunting 652
Liver Transplantation 653
Sinusoidal Obstruction Syndrome (Hepatic Veno-Occlusive Disease) 653
Risk Factors and Epidemiology 653
Pathogenesis 654
Clinical Presentation 655
Diagnosis 655
Prevention 656
Treatment 656
Conclusion 657
References 657
References 657.e1
45 Portal and Splenic Vein Thrombosis 658
Abbreviations 658
Introduction 658
Portal Vein Thrombosis in the Absence of Underlying Liver Disease 658
Epidemiology 658
Etiology 658
General Risk Factors 658
Myeloproliferative Neoplasms 658
Inherited Thrombophilia 658
Acquired Prothrombotic Disorders 659
Local Factors 659
Manifestations 660
Clinical and Laboratory Features 660
VIII Tumors of the Liver 667
46 Hepatocellular Carcinoma 668
Abbreviations 668
Introduction 668
Epidemiology 668
Risk Factors 669
Hepatitis B 670
Hepatitis C 671
Cirrhosis 671
Obesity 671
Diabetes 671
Nonalcoholic Fatty Liver Disease 672
Alcohol 672
Smoking 672
Aflatoxin 672
Prevention 673
Chemoprevention 673
Coffee 673
Statins 673
Pathogenesis 673
Mitogen-Activated Protein Kinase Pathway 673
Phosphoinositide 3-Kinase–AKT–Mammalian Target of Rapamycin Pathway 673
Wnt-β-Catenin Pathway 674
Proangiogenic Pathways 674
Epidermal Growth Factor Receptor Pathway 674
Hepatocellular Carcinoma Surveillance 675
Viral Hepatitis 675
Staging 678
Pathology 679
Histologic Variants 680
Fibrolamellar Hepatocellular Carcinoma 680
Scirrhous Hepatocellular Carcinoma 681
Radiology 681
Treatment 682
Hepatic Resection 682
Liver Transplantation 685
Living Donor Liver Transplantation 686
Liver-Directed Therapy 686
Ablative Therapy 687
Transcatheter Arterial Chemoembolization 688
Selective Internal Radiation Therapy 689
Systemic Therapy 690
Sorafenib 691
Combination of Sorafenib With Liver-Directed Therapy or Resection 691
Tyrosine Kinase Inhibitors 691
Mammalian Target of Rapamycin Inhibitors 692
Immunotherapy 692
Conclusion 692
References 692
References 692.e1
47 Cholangiocarcinoma 693
Abbreviations 693
Introduction 693
Epidemiology and Risk Factors 693
Epidemiology 693
Risk Factors 694
Molecular Pathogenesis 695
Pathology and Classification 698
Clinical Presentation and Diagnosis 698
Perihilar and Distal CCA 698
Intrahepatic CCA 700
Staging 700
Therapy 702
Surgical Therapy 703
Perihilar and Distal CCA 703
Intrahepatic CCA 703
Palliative Therapeutic Approaches 703
Biliary Stents 703
Systemic Therapy 704
Locoregional Therapies 705
Liver Transplantation for Unresectable Perihilar Cholangiocarcinoma 706
Conclusion 707
References 707
References 707.e1
48 Other Malignant Hepatic Tumors 708
Abbreviations 708
Introduction 708
Fibrolamellar Hepatocellular Carcinoma 708
Epidemiology 708
Pathogenesis 708
Pathology 709
Clinical Features 709
Diagnosis 709
Treatment and Prognosis 709
Hepatoblastoma 711
Epidemiology 711
Pathogenesis 711
Pathology 711
IX Liver Transplantation 736
50 Pretransplant Evaluation and Care 737
Abbreviations 737
Introduction 737
Pretransplant Evaluation 737
Timing of Referral for Evaluation 738
Exploring Alternatives to Liver Transplantation 742
Indications for Liver Transplantation 743
Acute Liver Failure 743
Hepatitis C Virus Infection 744
Alcoholic Cirrhosis 744
Nonalcoholic Steatohepatitis 744
Hepatitis B Virus Infection 745
Cholestatic Liver Diseases 745
Hepatocellular Carcinoma 745
Other Primary Hepatic Malignancies 746
Repeated Transplant: Recurrent Disease and Graft Failure 746
Contraindications for Liver Transplantation: Absolute and Relative 747
Medical Issues 747
Cardiovascular Disease 747
Pulmonary Disease 748
Renal Failure 748
Infection 748
Extrahepatic Malignancy 749
Advanced Age 749
Obesity 749
Cachexia, Sarcopenia, and Frailty 749
Psychosocial Issues 749
Active Alcohol or Substance Abuse 750
Psychiatric Comorbidities 750
Social Support 750
Technical Issues 750
Monitoring and Management 750
Allocation and Distribution Systems 750
Donor Liver Choices 751
Conclusion 751
References 752
References 752.e1
51 Transplantation of the Liver 753
Abbreviations 753
Introduction 753
Brief History of Liver Transplantation 753
Indications and Contraindications to Liver Transplantation 754
Indications 754
Contraindications 754
Candidate Evaluation and Listing 756
Evaluation 756
Assessment of Disease Severity and Waitlist Stratification 756
Candidates With Hepatocellular Carcinoma 757
Liver Transplantation: Deceased and Living Donors 758
Historical Perspectives 758
Deceased Donors: Brain Death Versus Cardiac Death 758
Expanded Criteria Donors 758
Organ Procurement Operation 758
Reduced-Sized and Split Livers 759
Living Donor: Historic Perspectives 760
Living Donor: Preoperative Evaluation and Planning 760
Living Donor: Hepatectomy 761
Living Donor: Impact on the Waitlist 762
Liver Transplantation: The Recipient Operation 762
Recipient Hepatectomy 762
Venous, Arterial, and Biliary Anastomoses 764
Postreperfusion Syndrome 765
Early Postoperative Complications of Liver Transplantation 765
Assessment of Early Allograft Function 765
Postoperative Bleeding 765
Technical Complications: Vascular 766
Technical Complications: Biliary 766
Current Outcomes of Liver Transplantation 767
Conclusion 768
References 768
References 768.e1
52 Post–Liver Transplant Management 769
Abbreviations 769
Introduction 769
Morbidity and Mortality After Liver Transplantation 769
Approach to the Care of the Liver Transplant Recipient 769
The First 90 Days 769
Beyond the First 90 Days 770
Allograft Immune Response 771
Acute Allograft Rejection 774
Chronic Ductopenic Rejection 775
Antibody-Mediated Rejection 775
Immunosuppression 776
Corticosteroids 776
Nucleotide Synthesis Inhibitors 776
Calcineurin Inhibitors 776
Mammalian Target of Rapamycin Inhibitors 776
Interleukin-2 Receptor Blockers 776
T Cell–Depleting Agents 776
Use of Immunosuppressive Medications 776
Complications Occurring After Liver Transplantation 778
Persistent Portal Hypertension After Liver Transplant 778
Biliary Complications 778
Vascular Complications 779
Arterial 779
Venous 779
Metabolic Complications 779
Hypertension 779
Diabetes Mellitus 779
Dyslipidemia 779
Obesity 779
Cardiovascular Disease 780
Renal Disease 780
Metabolic Bone Disease 781
Posttransplant Malignancies 781
Skin Cancers 781
Posttransplant Lymphoproliferative Disorder 781
Solid Organ Malignancy 781
Infectious Disease Complications 781
Reproductive Health 782
Repeated Transplantation 783
Conclusion 783
References 783
References 783.e1
53 Recurrent Primary Disease After Liver Transplantation 784
Abbreviations 784
Introduction 784
Hepatitis B and Liver Transplantation 784
Natural History After Liver Transplantation 785
Pathology of Hepatitis B After Liver Transplantation 786
Prevention of Recurrent Hepatitis B Virus Disease 788
Pretransplant Antiviral Treatment 788
Prophylactic Therapy 789
Historical Perspective 789
Overview of Prophylactic Strategies 790
Prophylaxis Using Hepatitis B Immunoglobulin Plus Nucleoside/Nucleotide Analog Therapy 790
Prophylaxis Using Long-Term Nucleoside/Nucleotide Analog Therapy With and Without Short Duration Hepatitis B Immunoglobulin Therapy 791
Treatment of Recurrent Hepatitis B Virus Disease 791
Management of Hepatitis B in Special Populations 792
Human Immunodeficiency Virus–Coinfected Patients 792
Hepatitis D Virus–Coinfected Patients 793
Recipients of Hepatitis B Core Antibody–Positive Donors 794
Repeated Transplantation 794
Hepatitis C and Liver Transplantation 794
Natural History After Liver Transplantation 794
Assessment of Hepatic Fibrosis in Liver Transplant Recipients 795
Pathology of Hepatitis C After Liver Transplant 796
Acute Rejection in Patients With Hepatitis C 797
Factors Associated With Disease Progression and Graft Loss 797
Recipient-Related Factors 798
Donor- and Peritransplant-Related Factors 798
Viral Factors 799
Transplantation-Related Factors 799
Immunosuppression and Acute Rejection 800
Induction Antibody Therapy 800
Corticosteroids 801
Calcineurin Inhibitors 801
Antiproliferative Drugs 801
Mammalian Target of Rapamycin Inhibitors 801
Treatment of Acute Rejection 801
Prevention and Treatment of Recurrent Disease 801
Pretransplant Antiviral Therapy 802
To Achieve Cure 802
To Prevent Recurrence 803
Posttransplant Therapy 803
Preemptive Therapy to Achieve Cure 804
Significant Fibrosis/Compensated Cirrhosis 804
Severe Early Recurrent Hepatitis C Virus Infection and Decompensated Cirrhosis 805
Retransplantation 806
Primary Biliary Cholangitis and Liver Transplantation 806
Natural History After Liver Transplantation 806
Risk Factors for Recurrent Primary Biliary Cholangitis 807
Diagnosis of Recurrent Primary Biliary Cholangitis 808
Management of Recurrent Primary Biliary Cholangitis 808
Primary Sclerosing Cholangitis and Liver Transplantation 808
Natural History After Liver Transplantation 808
Risk Factors for Recurrent Primary Sclerosing Cholangitis 809
Diagnosis of Recurrent Primary Sclerosing Cholangitis 809
Management of Recurrent Primary Sclerosing Cholangitis 809
Autoimmune Hepatitis and Liver Transplantation 810
Natural History After Liver Transplantation 810
Risk Factors for Recurrent Autoimmune Hepatitis 810
Diagnosis of Recurrent Autoimmune Hepatitis 811
Management of Recurrent Autoimmune Hepatitis 811
Nonalcoholic Fatty Liver and Liver Transplantation 811
Natural History After Liver Transplantation 811
Risk Factors for Recurrent Nonalcoholic Fatty Liver Disease 812
Diagnosis of Recurrent Nonalcoholic Fatty Liver Disease 812
Management of Recurrent Nonalcoholic Fatty Liver Disease 813
Alcoholic Liver Disease and Liver Transplantation 813
Natural History After Liver Transplantation 813
Risk Factors for Recurrent Alcoholic Liver Disease 814
Management of Recurrent Alcoholic Liver Disease 814
Metabolic Liver Diseases and Liver Transplantation 814
Wilson Disease 814
Hemochromatosis 814
Conclusion 815
References 815
References 815.e1
X Liver Affected by Other Conditions or Diseases 816
54 The Liver in Pregnancy 817
Abbreviations 817
Introduction 817
Changes in Liver Anatomy and Function During Normal Pregnancy 817
Liver Anatomy and Histology 817
Hemodynamics and Hepatic Blood Flow 818
Changes in Liver Function 818
Drug Metabolism 818
Serum Proteins and Lipids 819
Bilirubin 819
Bile Acids 820
Changes in Liver Function Test Values 820
Liver-Related Symptoms and Physical Examination in Pregnancy 821
Hepatobiliary Ultrasonography in Pregnancy 821
Liver Diseases Not Specific to Pregnancy 821
Viral Hepatitis 821
Hepatitis A 821
Hepatitis B 822
Hepatitis C 823
Hepatitis E 823
Autoimmune Hepatitis 824
Wilson Disease 824
Pregnancy and Vascular Liver Diseases 824
Hemodynamic Changes Associated With Pregnancy 825
Portal Vein Thrombosis in Pregnancy 825
Budd-Chiari Syndrome and Pregnancy 825
Hereditary Hemorrhagic Telangiectasia 826
Cirrhosis and Portal Hypertension 826
Management of Variceal Bleeding 826
Management of Labor and Delivery 826
Hepatobiliary Disease During Pregnancy 827
Pregnancy and Liver Transplant 828
The Evaluation of a Liver Mass During Pregnancy 828
Liver Diseases Unique to Pregnancy 829
Hyperemesis Gravidarum 829
Etiology 829
Pathophysiology 829
Diagnosis 829
Management 829
Outcomes 830
Intrahepatic Cholestasis of Pregnancy 830
Pathogenesis 830
Clinical Presentation 830
Diagnosis 830
Management 831
Prognosis 831
HELLP Syndrome 831
Pathogenesis 831
Clinical Presentation 831
Diagnosis 831
Management 832
Outcomes 832
Acute Fatty Liver of Pregnancy 832
Pathogenesis 833
Clinical Manifestations 833
Diagnosis 833
Differential Diagnosis 834
Management 835
Prognosis 835
Future Pregnancies 835
Consultation of Liver Patient Regarding Pregnancy 836
Reference 836
References 836.e1
55 Nutrition and the Liver 837
Abbreviations 837
Introduction 837
What Is Sarcopenia in Cirrhosis? 837
How Is Sarcopenia Diagnosed in Cirrhosis? 838
Clinical Significance of Sarcopenia in Cirrhosis 838
Contributors to Sarcopenia in Cirrhosis 839
Mechanisms of Sarcopenia in Cirrhosis 839
Therapeutic Options for Sarcopenia 840
Nutritional Supplementation 841
Exercise and Physical Activity 841
Anabolic Hormones 842
Ammonia-Lowering Measures 842
Molecular Targeted Therapies 842
Post–Liver Transplant Sarcopenia 842
Nonalcoholic Fatty Liver Disease and Nutrition 842
Conclusion 842
Reference 843
References 843.e1
56 Drug-Induced Liver Injury 844
Abbreviations 844
Introduction 844
Epidemiology, Common Causes, and Clinical Risk Factors 846
Causality Assessment 847
Mechanisms of Hepatic Injury Due to Drugs and Chemicals 847
Apoptosis and Necrosis 847
Bioactivation of Xenobiotic Agents 848
Role of Glutathione in Chemical Detoxification of Reactive Electrophiles 849
Oxidative Stress and Free-Radical Reactions in Hepatotoxicity 850
Immunologic Mechanisms of Drug-Induced Liver Injury 852
Mechanisms: Haptens and p-i Concept 853
Clinicopathologic Patterns of Drug-Induced Liver Injury 853
Hepatocellular (Hepatitic) Pattern of Injury 853
Cholestatic Pattern of Injury 857
Mixed Pattern of Injury 857
Steatotic (Fatty Liver) Pattern of Injury 858
Macrovesicular or Mixed Microvesicular and Macrovesicular Steatosis 858
Predictable Versus Unpredictable Drug-Induced Liver Injury 859
Drug-Induced Liver Injury Due To Specific Agents 859
Anesthetics 859
Anticonvulsants 860
Newer Anticonvulsants 864
Psychotropic Drugs 864
Attention Deficit–Hyperactivity Disorder 864
Antipsychotics: First Generation 864
Antipsychotics: Second Generation 864
Antidepressants 865
Anxiolytic and Soporific Agents 865
Agents Used in the Treatment of Parkinson Disease, Migraines, and Alzheimer Disease 865
Antidiabetic Agents 866
Sulfonylureas 866
Biguanides 867
Mitiglinide Analogs 867
α-Glucosidase Inhibitors 867
Antimicrobial Agents: Antifungals, Antiparasitics, Antimalarials, and Antituberculars 868
Antifungals 868
Amphotericin B 868
Ketoconazole and Other Azoles 869
Terbinafine 869
Griseofulvin 869
Caspofungin 869
Flucytosine 869
Antimalarials 869
Benzimidazole Antiparasitics 870
Antituberculars 870
Isoniazid, Rifampicin, and Pyrazinamide 870
Ethambutol 870
Dapsone 871
Rifapentine 871
Ethionamide 871
Antimicrobials: Antivirals 871
Anti-HIV Agents 871
Nucleoside Analog Reverse Transcriptase Inhibitors 871
Protease Inhibitors 872
Nonnucleoside Reverse Transcriptase Inhibitors 873
Nucleotide Reverse Transcriptase Inhibitors 873
Fusion Inhibitors and Integrase Inhibitor 873
Antimicrobials: Antibacterials 873
Penicillins and Cephalosporins 873
Amoxicillin–Clavulanic Acid 873
Macrolides 874
Quinolones 875
Sulfonamides 875
Tetracyclines 875
Other Antibiotics 875
Cardiovascular Agents 876
Antiplatelet/Anticoagulant/Thrombolytic Agents 876
Angiotensin-Converting Enzyme Inhibitors 876
Angiotensin II Receptor Blockers 876
Antiarrhythmic Drugs 876
β-Blockers 878
Ca2+ Channel Blockers 878
Diuretics 878
Other Antihypertensive Agents, Including Prescription Drugs for Pulmonary Hypertension 878
Cholesterol-Lowering Agents 878
Hydroxymethylglutaryl-Coenzyme a Reductase Inhibitors (Statins) 878
Nonsteroidal Antiinflammatory Drugs and Acetaminophen 880
Antineoplastic and Immunosuppressive Agents 883
Antimetabolites 883
Alkylating Agents 886
Nitrosoureas (Carmustine, Lomustine, Semustine, Streptozocin) 886
Immunosuppressants for Solid Organ Transplant 887
Tyrosine Kinase Inhibitors 887
Biologic Response Modulators 887
Liver Injury Due to Immune Checkpoint Inhibitors 888
Botanicals, Herbal Products, and Dietary Supplements 888
Some Botanicals, Herbal Products, and Dietary Supplements Associated With Liver Injury 888
Summary 889
Conclusion 889
Acknowledgments 889
References 890
References 890.e1
57 Preoperative and Postoperative Hepatic Dysfunctions 891
Abbreviations 891
Introduction 891
Preoperative Liver Dysfunction 891
Postoperative Liver Dysfunction 893
Anesthetic-Induced Liver Injury 894
Ischemic Hepatitis 894
Acute Viral Hepatitis 894
Drug-Induced Hepatitis 894
Benign Postoperative Cholestasis 895
Bile Duct Obstruction 895
Evaluation of Patients With Postoperative Liver Dysfunction 896
References 896
References 896.e1
XI Inherited and Pediatric Liver Diseases 897
58 Bilirubin Metabolism and Its Disorders 898
Abbreviations 898
Introduction 898
Jaundice as an Indicator of Hepatic Dysfunction 898
Formation of Bilirubin 898
Opening of the Heme Ring by Heme Oxygenase 899
Conversion of Biliverdin to Bilirubin 900
Potential Beneficial Effects of Products of Heme Breakdown 900
Measurement of Bilirubin Production 900
Chemistry of Bilirubin 901
Physical Conformation and Solubility of Bilirubin IXα 901
Absorption Spectra and Circular Dichroism of Bilirubin IXα 901
Photochemistry of Bilirubin 902
Conformational Isomerization and Cyclization 902
Fluorescence 902
Photooxidation and Degradation 902
Dismutation 902
Bilirubin Toxicity 902
Bilirubin Encephalopathy in Gunn Rats 902
Clinical Features of Bilirubin Encephalopathy 904
The Blood-Brain Barrier and Cerebral Bilirubin Clearance 904
Biochemical Basis of Bilirubin Toxicity 904
Bilirubin Nephrotoxicity 905
Disposition of Bilirubin 905
The Role of Albumin 906
Bilirubin-Binding Sites and Completion With Other Ligands 907
Determination of Reserve Bilirubin-Binding Capacity of Albumin 907
Irreversible Binding of Bilirubin to Albumin 907
Bilirubin Metabolism in Inherited Analbuminemia 907
Hepatic Bilirubin Uptake 907
Transporters 907
Acquired and Inherited Abnormalities of Hepatic Bilirubin Uptake 908
Storage of Bilirubin Within the Hepatocyte 909
Conjugation of Bilirubin 909
Enzyme-Catalyzed Glucuronidation of Bilirubin 909
Latency of Uridine Diphosphoglucuronate Glucuronosyltransferases 909
Multiple Forms of Uridine Diphosphoglucuronate Glucuronosyltransferases 909
Organization of the UGT1A Gene Family 910
Bile Canalicular Secretion of Bilirubin Conjugates and Related Organic Anions 911
ATP-Dependent Organic Anion Transport 911
Transport of Bile Acids and Non–Bile Acid Organic Anions 911
Role of Nuclear Receptors in the Orchestration of Various Steps Involved in Bilirubin Throughput 912
Fate of Bilirubin in the Gastrointestinal Tract 912
Extrahepatic Handling of Bilirubin 913
Renal Handling of Bilirubin 913
Intestinal Bilirubin Metabolism 913
Alternative Pathways of Bilirubin Elimination 913
Photoisomerization 913
Enzyme-Catalyzed Oxidation 913
Quantification of Bilirubin 913
Conversion of Bilirubin to Azo Derivatives 913
Chromatographic Analysis of Bilirubin Species as Intact Tetrapyrroles: Thin-Layer and High-Pressure Liquid Chromatography 913
Slide Tests 914
Transcutaneous Bilirubinometry 914
The Nature and Significance of Bilirubin in Body Fluids and Tissues 914
Bilirubin in Plasma 914
Bilirubin in Urine 914
Bilirubin Species in Bile 914
Bilirubin in Tissue Fluids 914
Bilirubin in Cerebrospinal Fluid 914
Bilirubin in Skin and Sclera 915
Disorders of Bilirubin Metabolism 915
Disorders Associated With Unconjugated Hyperbilirubinemia 915
Neonatal Hyperbilirubinemia 915
Increased Bilirubin Load 915
Immaturity of Hepatic Bilirubin Uptake 915
Bilirubin Conjugation 915
Maternal Milk Jaundice. 915
Maternal Serum Jaundice (Lucey-Driscoll Syndrome). 915
Bile Canalicular Bilirubin Excretion 916
Increased Intestinal Reabsorption 916
Management of Neonatal Hyperbilirubinemia 916
Hyperbilirubinemia Caused by Bilirubin Overproduction 916
Inherited Disorders of Bilirubin Glucuronidation 916
Crigler-Najjar Syndrome Type 1 916
Laboratory Tests. 916
Abnormalities of Hepatic Uridine Diphosphoglucuronate Glucuronosyltransferases and Their Molecular Mechanisms. 917
Animal Models of Crigler-Najjar Syndrome Type 1: The Gunn Rat. 917
Ugt1a1-Deficient Transgenic Mice. 918
Treatment of Crigler-Najjar Syndrome Type 1. 918
Phototherapy. 918
Plasmapheresis. 918
Orthotopic Liver Transplant. 918
Experimental Methods Aimed at Reducing Serum Bilirubin Levels 918
Inhibition of Heme Oxygenase. 918
Induction of Cytochrome P-450c. 918
Methods Aimed at Replacing Hepatic Uridine Diphosphoglucuronate Glucuronosyltransferase Family 1 Member A1 Activity. 918
Hepatocyte Transplant. 918
Gene Therapy. 919
Crigler-Najjar Syndrome Type 2 (Arias Syndrome) 919
Clinical Features. 919
Laboratory Tests. 919
Molecular Mechanism and Inheritance. 919
Gilbert Syndrome 920
Clinical Features. 920
The Genetic Basis of Gilbert Syndrome. 920
Organic Anion Transport. 920
Effect of Fasting. 921
Effect of Nicotinic Acid Administration. 921
Bilirubin Conjugates in Bile. 921
Diagnosis. 921
Animal Model. 921
Disorders Resulting in Predominantly Conjugated Hyperbilirubinemia 921
Acquired Defects of Hepatobiliary Transport 921
Inherited Disorders of Excretion of Conjugated Bilirubin 922
Dubin-Johnson Syndrome. 922
Clinical Findings. 922
Laboratory Tests. 922
Organic Anion Transport. 922
The Genetic Basis of Dubin-Johnson Syndrome. 923
Inheritance. 923
Urinary Coproporphyrin Excretion. 923
Animal Models 923
Mutant Corriedale Sheep. 923
TR− Rats and Eisai Hyperbilirubinemic Rats. 923
Rotor Syndrome 924
Clinical Findings. 924
Organic Anion Excretion. 924
Urinary Coproporphyrin Excretion. 924
The Genetic and Mechanistic Basis of Rotor Syndrome. 924
Acknowledgments 925
References 925
References 925.e1
59 Wilson Disease 926
Abbreviations 926
Introduction 926
Wilson Disease: History 926
Copper Pathway 926
Epidemiology: Incidence and Geographic Distribution 927
Pathogenesis 927
Basic Defect 927
Copper Transport and Homeostasis in Hepatocytes 928
Consequences of Copper Storage 929
Clinical Manifestations 929
Clinical Diagnostic Features 929
Hepatic Involvement 929
Neurologic Involvement 930
Psychiatric Aspects 931
Ocular Features 931
Involvement of Other Systems 931
Biochemical Diagnostic Features 932
Imaging Studies 933
Histopathology 933
Diagnosis by Mutation Analysis 933
Specific Mutations and Clinical Features 934
Diagnosis of Presymptomatic First-Degree Relatives 935
Diagnosis by Population Screening 935
Genetic Differential Diagnosis 935
Treatment 936
Chelation 936
Induction of Metallothioneins and Interference With Copper Absorption 937
Antioxidants 938
Dietary Management 938
Liver Transplantation 938
Gene Therapy 939
Special Situations 939
Pregnancy 939
Wilsonian Fulminant Hepatic Failure 939
Disease Complications 940
Consideration of Risk of Copper Deficiency 940
Prognosis and Natural History 940
Conclusion 940
References 940
References 940.e1
60 Hemochromatosis 941
Abbreviations 941
Introduction 941
Historical Aspects 941
Hepcidin, the Hemochromatosis Hormone 943
The Genetic and Pathogenic Basis for Hemochromatosis 943
The Iron-Sensing Machinery 943
The Common Pathogenic Basis of All Forms of Hemochromatosis 946
Genetics and Epidemiology 949
The Clinical Spectrum of Hemochromatosis 951
Fully Expressed Hemochromatosis 951
The Low Penetrance of HFE C282Y Homozygotes 951
Non–HFE-Associated Hemochromatosis 953
TFR2-Associated Hemochromatosis 953
SLC40A1-Associated Hemochromatosis 953
HAMP- and HFE2-Associated Hemochromatosis (Juvenile Hemochromatosis) 953
Acquired Hemochromatosis 953
Suspecting and Diagnosing Hemochromatosis 954
Management 956
Nonhemochromatotic Genetic Iron Overload 957
Ferroportin Disease 957
Aceruloplasminemia 957
Atransferrinemia/Hypotransferrinemia 957
Divalent-Metal Transporter 1 Deficiency 958
Hereditary Iron-Loading Anemias With Inefficient Erythropoiesis or Altered Intracellular Iron Traffic 958
Porphyria Cutanea Tarda 958
Miscellaneous 959
Bantu Siderosis 959
Alloimmune (Neonatal) Hemochromatosis 959
Conclusion 959
Acknowledgments 959
References 959
References 959.e1
61 α1-Antitrypsin Deficiency 960
Abbreviations 960
Introduction 960
Epidemiology 960
Pathogenesis 960
Clinical Features 964
Diagnosis 966
Treatment 967
Conclusion 970
References 970
References 970.e1
62 Approach to and Evaluation of Metabolic Liver Diseases 971
Introduction 971
General Approach and Clinical Evaluations 971
Diagnostics for Metabolic Liver Diseases 972
Use of Age as a Determining Factor for Diagnostic Approach and Urgency 972
Infancy 972
Childhood 973
Adulthood 974
Benefits of Making a Diagnosis of Metabolic Liver Disease 975
Application of Genetic Testing to Diagnose Metabolic Liver Disease and the Modern Hepatologist 975
References 975
References 975.e1
63 Pediatric Cholestatic Syndromes 976
Abbreviations 976
Introduction 976
Intrahepatic Disease 976
Cholestasis Associated With Infection 976
Bacterial Infection 976
Generalized Bacterial Infection 976
Congenital Syphilis 976
Other Infections 977
Toxoplasmosis 977
Rubella 977
Cytomegalovirus 978
Herpes Simplex Virus 978
Enteroviruses 978
Parvovirus B19 978
Varicella-Zoster Virus 978
Hepatotropic Viruses 979
Cholestasis Associated With Endocrine Disorders 979
Hypopituitarism 979
Adrenal and Thyroid Disorders 979
Cholestasis Associated With Genetic Mutations 979
α1-Antitrypsin Deficiency (OMIM 613490) 979
Biochemistry and Genetics 979
Clinical Manifestations and Outcomes of α1-Antitrypsin Deficiency–Associated Liver Disease 979
Hepatic Pathology 980
Diagnosis 980
Treatment 981
Cystic Fibrosis (OMIM 219700) 982
Clinical Manifestations and Hepatic Pathology 982
Diagnosis 983
Treatment 983
Inborn Errors of Bile Acid Synthesis and Metabolism 983
Biosynthesis and Enterohepatic Circulation 983
Defects of Bile Acid Biosynthesis 983
Clinical Manifestations 983
Diagnosis 984
Treatment 984
Inherited Syndromes of Progressive Cholestasis 984
Familial Intrahepatic Cholestasis 1 Deficiency, or Progressive Familial Intrahepatic Cholestasis Type 1 (OMIM 211600) 984
Bile Salt Export Pump Deficiency, or Progressive Familial Intrahepatic Cholestasis Type 2 (OMIM 601847) 985
Multidrug Resistance Protein 3 Deficiency, or Progressive Familial Intrahepatic Cholestasis Type 3 (OMIM 602347) 985
Tight Junction Protein Type 2 Deficiency, or Progressive Familial Intrahepatic Cholestasis Type 4 (OMIM 607709) 985
Treatment 985
Alagille Syndrome 986
Clinical Features 986
Laboratory Evaluation 986
Histology 986
Genetics 986
Management and Prognosis 986
Neonatal Ichthyosis and Sclerosing Cholangitis (OMIM 607626) 987
Lymphedema Cholestasis Syndrome Type 1, or Aagenaes Syndrome (OMIM 214900) 987
Cholestasis in Less Characterized Disorders 987
Nonsyndromic Paucity of Bile Ducts 987
Neonatal Hepatitis 987
Giant Cell Hepatitis With Autoimmune Hemolytic Anemia (Bernard Syndrome) 987
Liver Disease Associated With Intestinal Failure and Total Parenteral Nutrition 987
Clinical Features 987
Liver Histology 988
Lipid Emulsions in Intestinal Failure–Associated Liver Disease 988
Treatment 988
Extrahepatic Disorders 988
Choledochal Cyst 988
Clinical Features 988
Diagnosis 989
Index 1029
A 1029
B 1031
C 1032
D 1034
E 1036
F 1036
G 1037
H 1037
I 1041
J 1042
K 1042
L 1042
M 1044
N 1045
O 1046
P 1046
Q 1048
R 1048
S 1049
T 1050
U 1051
V 1051
W 1052
X 1052
Y 1052
Z 1052
Clinical Key ad IBC1