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Gout

Gout

Naomi Schlesinger | Peter E Lipsky

(2018)

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Book Details

Abstract

Concise and clinically focused, Gout, by Drs. Naomi Schlesinger and Peter E. Lipsky, provides a one-stop overview of recent developments regarding this common form of inflammatory arthritis. Impacting an estimated 8.3 million people in the U.S. alone, gout is seen frequently by both primary care physicians as well as rheumatologists. This resource provides detailed coverage of the epidemiology, causes, diagnosis, management, and treatment of patients with both acute and chronic gout.

  • Addresses key topics such as genetics, hyperuricemia, comorbidities of gout, treatment guidelines for acute and chronic gout, classification and diagnosis, and imaging.
  • Discusses future outlooks for improving pharmacological and nonpharmacological treatment options, including an overview of drugs in the pipeline.
  • Consolidates today’s available information on this timely topic into one convenient resource.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Gout i
Gout iii
Copyright iv
List of Contributors v
Preface ix
REFERENCE ix
Dedication xi
Contents xiii
1 - Hyperuricemia and the Silent Deposition of Monosodium Urate Crystals 1
DEFINITION OF HYPERURICEMIA 1
CONSEQUENCES OF HYPERURICEMIA 1
DEPOSITS OF MONOSODIUM URATE CRYSTALS IN PATIENTS WITH ASYMPTOMATIC HYPERURICEMIA 2
Ultrasound 2
Dual-Energy Computed Tomography 2
Relevance of Silent Deposits 4
Pending Agenda 5
DISCLOSURE STATEMENT 5
REFERENCES 5
2 - Genetics of Hyperuricemia and Gout 9
THE GENETIC BASIS OF HYPERURICEMIA 9
MOLECULAR INSIGHTS INTO URATE CONTROL 12
Renal Uric Acid Excretion 12
SLC2A9 12
ABCC4 15
PDZK1 16
ABCG2 and Gut Uric Acid Excretion 16
Metabolic Loci 18
Glucokinase regulatory protein 18
ALDH2 and ALDH16A1 19
LRP2 20
THE GENETIC BASIS OF PROGRESSION FROM HYPERURICEMIA TO GOUT 20
Candidate Gene Studies in Gout 20
TLR4 20
CARD8 and IL1B 21
PPARGC1B and mitochondrial DNA copy number 21
APOA1 21
GWAS With Gout as Outcome 21
MENDELIAN RANDOMIZATION: ARE HYPERURICEMIA AND GOUT CAUSAL FOR COMORBID METABOLIC CONDITIONS? 22
PRECISION MEDICINE 23
REFERENCES 23
3 - Immunoinflammatory Nature of Gout 29
INTRODUCTION 29
MONOSODIUM URATE CRYSTALS TRIGGER THE ACTIVATION OF THE NRLP3 INFLAMMASOME 29
PYROPTOSIS MEDIATED BY MONOSODIUM URATE CRYSTALS 29
INFLAMMATORY SIGNALS INFLUENCING INFLAMMATION AND INFLAMMASOME ASSEMBLY IN GOUT 31
MECHANISMS OF INFLAMMASOME ASSEMBLY IN GOUT 31
IL-1β AN INITIATOR OF INFLAMMATION IN GOUT 31
IL-1 INHIBITION IN GOUT 32
MECHANISMS OF INFLAMMATION RESOLUTION IN GOUT 32
CONCLUSION 33
REFERENCES 33
4 - Tophi: Clinical and Biological Features 37
INTRODUCTION 37
TOPHUS PATHOLOGY 37
MECHANISMS OF TOPHUS FORMATION 37
CLINICAL FEATURES OF TOPHI 38
TOPHUS IMAGING 39
TOPHI AND URATE ARTHROPATHIES 41
MANAGEMENT 42
DISCLOSURE 43
REFERENCES 43
5 - Crystal Analysis in Synovial Fluid 47
PREPARATION OF THE SAMPLE 47
MICROSCOPE 48
DIAGNOSING INTERCRITICAL GOUT AND CPP CRYSTAL ARTHRITIS 53
SOME PRACTICAL TIPS 54
OTHER CHARACTERISTICS OF SYNOVIAL FLUID IN CRYSTAL ARTHRITIS 54
OTHER CRYSTALS IN SYNOVIAL FLUID 55
DISCLOSURE 57
REFERENCES 57
6 - Epidemiology of Gout and Hyperuricemia 59
INTRODUCTION 59
UNITED STATES AND CANADA 59
Hyperuricemia 59
Gout 60
Prevalence 60
Incidence 60
UNITED KINGDOM AND EUROPE 61
Hyperuricemia 61
Gout 61
Prevalence 61
Incidence 61
ASIA AND OCEANIA 62
Hyperuricemia 62
Gout 63
Prevalence 63
Incidence 64
AFRICA AND THE MIDDLE EAST 64
Hyperuricemia 64
Gout 64
Prevalence 64
GLOBAL BURDEN OF GOUT 64
AGE, GENDER, ETHNICITY, AND SOCIOECONOMIC DEPRIVATION 65
Age and Prevalence and Incidence of Gout and Hyperuricemia 66
Sex and Prevalence and Incidence of Gout and Hyperuricemia 66
Race/Ethnicity and Prevalence and Incidence of Gout and Hyperuricemia 67
Socioeconomic Deprivation and Prevalence and Incidence of Gout and Hyperuricemia 68
CONCLUSION 68
REFERENCES 68
7 - Comorbidities in Gout 73
INTRODUCTION 73
CHRONIC KIDNEY DISEASE 73
CARDIOVASCULAR DISEASE 75
HYPERTENSION 79
HYPERLIPIDEMIA 80
OSTEOPOROSIS 80
OBESITY 81
DIABETES 81
OTHER ASSOCIATIONS 82
SUMMARY 82
REFERENCES 82
8 - Imaging of Gout 89
IMAGING TECHNIQUES WIDELY USED FOR ASSESSMENT OF GOUT 89
Conventional Radiography 89
Ultrasonography 90
Magnetic Resonance Imaging 90
Conventional Computed Tomography 90
Dual-Energy Computed Tomography 91
IMAGING FOR THE DIAGNOSIS OF GOUT 92
IMAGING FOR ASSESSMENT OF DISEASE SEVERITY 94
IMAGING FOR COMPLICATIONS OF GOUT 95
IMAGING TO MEASURE RESPONSE TO THERAPY 96
IMAGING TO UNDERSTAND MECHANISMS OF DISEASE 96
IMAGING TO ASSIST WITH PATIENT UNDERSTANDING OF DISEASE AND THERAPIES 97
REFERENCES 97
FURTHER READING 100
9 - Gout Classification and Diagnosis 101
INTRODUCTION 101
CLASSIFICATION AND DIAGNOSTIC CRITERIA 101
EARLY ATTEMPTS AT GOUT CLASSIFICATION: ROME, NEW YORK, AND AMERICAN RHEUMATISM ASSOCIATION CRITERIA 101
THE SUGAR STUDY AND 2015 ACR/EULAR GOUT CLASSIFICATION CRITERIA 103
DIAGNOSTIC RULES ON GOUT 107
CLASSIFICATION OF GOUT FLARES 109
CONCLUSION 110
DISCLOSURE STATEMENT 111
REFERENCES 111
10 - Clinical Features of Gout and Its Impact on Quality of Life 113
GOUT FLARE 113
GOUTY TOPHI 115
CHRONIC GOUT 115
OTHER MANIFESTATIONS OF GOUT 116
UNUSUAL PRESENTATIONS OF GOUT 116
Early-Onset Gout 116
Gout in Women 116
Spinal Gout 116
IMPACT OF GOUT ON QUALITY OF LIFE 116
DISCLOSURE SUMMARY 117
REFERENCES 117
11 - Quality of Life 119
GOUT: THE DISEASE AND ITS PREVALENCE 119
QUALITY OF LIFE AND HEALTH-RELATED QUALITY OF LIFE: CONCEPT AND DEFINITIONS 119
WHY MEASURE QUALITY OF LIFE AND HEALTH-RELATED QUALITY OF LIFE WHEN WE HAVE OBJECTIVE DISEASE MEASURES IN GOUT? 120
HOW TO MEASURE QUALITY OF LIFE AND HEALTH-RELATED QUALITY OF LIFE? GENERIC VERSUS DISEASE-SPECIFIC MEASURES IN GOUT 120
PATHWAYS TO THE IMPACT OF GOUT ON HEALTH-RELATED QUALITY OF LIFE AND QUALITY OF LIFE 121
EFFECT OF GOUT ON HEALTH-RELATED QUALITY OF LIFE AND QUALITY OF LIFE 123
PREDICTORS OF HEALTH-RELATED QUALITY OF LIFE AND QUALITY OF LIFE IN PATIENTS WITH GOUT (TABLE 11.2) 124
EFFECT OF GOUT TREATMENTS ON HEALTH-RELATED QUALITY OF LIFE 131
Urate-Lowering Therapies 131
Antiinflammatory Drugs 132
IS INAPPROPRIATE TREATMENT OF GOUT ASSOCIATED WITH WORSE HEALTH-RELATED QUALITY OF LIFE? 133
ARE THERE DISPARITIES IN THE HEALTH-RELATED QUALITY OF LIFE IN PATIENTS WITH GOUT? 133
PHYSICAL FUNCTION: A CONCEPT RELATED TO QUALITY OF LIFE/HEALTH-RELATED QUALITY OF LIFE 134
SUMMARY AND CONCLUSIONS 137
FUTURE DIRECTIONS 138
DISCLOSURE STATEMENT 138
REFERENCES 138
12 - Treatment Guidelines: The Good, the Bad, the Ugly 141
INTRODUCTION 141
WHAT ARE CLINICAL PRACTICE GUIDELINES AND HOW SHOULD THEY BE DEVELOPED? 141
CLINICAL PRACTICE GUIDELINES FOR GOUT 142
ON WHAT DO THE GUIDELINES AGREE? 145
Management of Acute Attacks 145
Prophylaxis When Starting Urate-Lowering Therapy 146
Patient Education 147
ON WHAT DO THE GUIDELINES DISAGREE? 147
Dietary Interventions 147
Indications for and When to Consider Urate-Lowering Therapy 147
Treat-to-Target or Treat-to-Avoid-Symptoms? 148
WHAT ARE THE IMPLICATIONS OF THESE DIFFERENCES IN GUIDELINE RECOMMENDATIONS? 149
CONCLUSION 149
REFERENCES 150
13 - Nonpharmacologic Treatment of Gout 155
INTRODUCTION 155
TOPICAL ICE ACUTE GOUT 155
EXERCISE 155
WEIGHT LOSS 155
LOW PURINE DIET 156
DIET LOW IN FRUCTOSE 156
HYDRATION 156
DECEASE IN ALCOHOL CONSUMPTION 157
DAIRY PRODUCTS 157
COFFEE 157
FRUITS AND VEGETABLES 157
Fruits 158
Cherries 158
Lemons 158
Vegetables 158
Tofu 158
HIGH-PROTEIN DIETS 158
DIETARY SUPPLEMENTS 158
VITAMINS 159
Vitamin C 159
TRADITIONAL CHINESE MEDICINE 159
SUMMARY 159
REFERENCES 159
14 - Pharmacologic Treatments: Acute Gout 163
INTRODUCTION 163
NONSTEROIDAL ANTIINFLAMMATORY DRUGS 164
COLCHICINE 164
CORTICOSTEROIDS 165
INTERLEUKIN 1B ANTAGONISTS 166
REFERENCES 167
15 - Current Pharmacological Treatments of Chronic Gout 169
TREATMENT OF CHRONIC GOUT 169
URATE-LOWERING THERAPY 169
URICOSTATIC DRUGS 169
Xanthine Oxidase Inhibitors 169
Allopurinol 170
Febuxostat 171
URICOSURIC DRUGS 172
Probenecid 173
Lesinurad 173
Losartan 173
Fenofibrate 173
Benzbromarone 173
URICOLYTIC DRUGS 173
Pegloticase 173
URATE-LOWERING THERAPY DRUGS ARE EFFECTIVE 174
POOR ADHERENCE TO URATE-LOWERING THERAPY 174
TREATMENT OF CHRONIC GOUT IS NOT JUST ABOUT URATE-LOWERING THERAPY 174
Prophylaxis 174
Colchicine 174
Nonsteroidal Antiinflammatory Drugs 175
Interleukin-1 Inhibitors 175
POOR ADHERENCE TO PROPHYLAXIS 175
CONCLUSION 175
REFERENCES 175
16 - Treat to Target 179
ORIGINS OF THE TREAT-TO-TARGET CONCEPT 179
EVIDENCE FOR TREAT-TO-TARGET APPROACHES 179
Treat to Target in Gout 179
Symptom-Focused Approach: The Natural History of Gout 180
Serum Urate–Focused Approach: Impact on Outcomes 180
SERUM URATE TARGETS IN GOUT 180
Therapeutic Serum Urate Targets 181
Preventive Serum Urate Target 181
How Fast, How Low, How Long Should We Lower Serum Urate Level? 181
DISCLOSURE STATEMENT 182
REFERENCES 182
17 - Drugs in the Pipeline 185
INTRODUCTION 185
NEW ANTIINFLAMMATORY STRATEGIES 185
Targeting Interleukin-1β in Acute and Chronic Gout 185
Anakinra 186
Canakinumab 187
Rilonacept 187
Other Novel Antiinflammatory Strategies 187
Dapansutrile (OLT-1177) 187
Bucillamine 187
NEW APPROACHES TO SERUM URATE LOWERING 187
Agents That Inhibit Urate Synthesis 188
Topiroxostat 188
Ulodesine 189
Agents That Promote Urate Degradation 189
Pegloticase 189
Pegsiticase 189
Rasburicase 190
Agents That Promote Urate Excretion 190
Lesinurad 190
Verinurad 192
UR-1102 192
Tofisopam 192
Drugs with incidental uricosuric benefits 192
DRUGS WITH MIXED MECHANISMS 192
Arhalofenate 192
Tranilast 193
RLBN1001 193
BEYOND THE PIPELINE: POSSIBLE FUTURE STRATEGIES? 193
CONCLUSION 193
DISCLOSURE STATEMENT 194
REFERENCES 194
Epilogue 197
REFERENCES 197
Index 199
A 199
B 200
C 200
D 200
E 201
F 201
G 201
H 202
I 203
J 203
K 203
L 203
M 203
N 204
O 204
P 204
Q 205
R 205
S 205
T 206
U 206
V 207
W 207
X 207
Y 207