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Hematology, Immunology and Infectious Disease

Hematology, Immunology and Infectious Disease

Robin K Ohls | Akhil Maheshwari

(2018)

Additional Information

Book Details

Abstract

Dr. Richard Polin’s Neonatology Questions and Controversies series highlights the most challenging aspects of neonatal care, offering trustworthy guidance on up-to-date diagnostic and treatment options in the field. In each volume, renowned experts address the clinical problems of greatest concern to today’s practitioners, helping you handle difficult practice issues and provide optimal, evidence-based care to every patient.

Table of Contents

Section Title Page Action Price
Front Cover Cover
IFC ES1
Neonatology Questions and Controversies i
Neonatology Questions and Controversies ii
Neonatology Questions and Controversies iii
Copyright iv
Contributors v
Series Foreword vii
Preface ix
Contents xi
1 - Stem Cell Therapy in Neonates—the Time Has (Almost) Come 1
Stem cells: important in development and disease 2
Mesenchymal stromal cells: orchestrator of immune response and healing processes 2
Endothelial colony-forming cells: when angiogenesis counts 2
Amnion epithelial cells—don’t discount the placenta 4
Bronchopulmonary dysplasia and stem cell therapy 4
Prophylactic mesenchymal stromal cell therapy 4
Rescue mesenchymal stromal cell therapy 6
It’s in the juice—MSCs act via a paracrine effect 6
Other stem cells for bronchopulmonary dysplasia 6
Endothelial progenitor cells and endothelial colony-forming cells 6
Human amnion epithelial cells 7
Summary 7
Mesenchymal stromal cell therapy for neurologic diseases of newborn 7
Intraventricular hemorrhage 7
Hypoxic-ischemic encephalopathy 7
Neonatal stroke 8
Mesenchymal stromal cells for congenital heart disease 8
Mechanisms of action of stem cells in neonatal diseases 8
Stem cells targeting the immune response 9
Stem cells and growth factors 9
Extracellular vesicles: exosomes and microvesicles 11
Summary 11
Clinical stem cell trials 11
Completed stem cell trials for neonatal diseases 11
Lessons from nonneonatal stem cell trials 12
Going forward—has the time come? 12
Conclusion 13
REFERENCES 13
2 - Genome and Exome Sequencing: Can It Impact Clinical Care in the Neonatal Intensive Care Unit? 19
Next-generation sequencing 20
Genome vs. exome vs. targeted-panel sequencing 22
Clinical utility of next-generation sequencing in neonatal intensive care unit 25
Newborn screening 27
Future perspectives 28
REFERENCES 28
3 - Transfusion Thresholds in the Neonatal Intensive Care Unit: What Have Recent Randomized Controlled Trials Taught Us? 31
Transfusion risks 32
When to transfuse 32
Acute anemia 32
Chronic anemia 33
Preoperative target for infants undergoing surgery 33
Studies evaluating target hemoglobin or hematocrit 33
Erythropoiesis-stimulating agents and transfusions 35
Search for other transfusion markers 36
Selection of red cell products 36
Red cell transfusion volumes 37
When families oppose transfusions 38
Summary and recommendations 39
REFERENCES 40
4 - Donor Milk Compared with Mother’s Own Milk 43
Secretory immunoglobulin A 46
Lactoferrin 46
Lysozyme 46
Epidermal growth factor 47
Lipase 47
Oligosaccharides 47
Transforming growth factor 48
Cytokines and chemokines 48
Cells 48
Erythropoietin 49
Summary 49
REFERENCES 49
5 - Will Standardized Approaches to Nutrition Decrease Necrotizing Enterocolitis? 53
General approach to enteral feeding to prevent necrotizing enterocolitis in preterm infants 53
Enteral feeding during treatment for patent ductus arteriosus 56
Enteral feedings and red blood cell transfusions 58
Quality improvement framework 61
Conclusion 61
REFERENCES 62
6 - Nonimmune Neonatal Hemolytic Anemia: Recent Advances in Diagnosis and Treatment 65
Initial testing of anemic neonate to assess for hemolysis 65
Additional laboratory testing 67
Neonatal hemolytic anemia from genetic red blood cell membrane defects 69
Hereditary spherocytosis 69
Hereditary elliptocytosis 69
Heterozygous hereditary elliptocytosis 69
Hereditary elliptocytosis with hemolysis 70
Southeast Asian ovalocytosis 70
Hereditary stomatocytosis 70
Neonatal hemolytic anemia from red blood cell enzyme defects 70
Glucose-6-phosphate dehydrogenase deficiency 70
Pyruvate kinase deficiency 71
Hemolysis caused by mutations in globin 71
Neonatal hemolytic anemia of acquired causes 72
Infantile pyknocytosis 72
Maternal medications 72
Perinatal infections 72
Vitamin E deficiency 72
REFERENCES 73
7 - Using the New Complete Blood Count Parameters in Neonatal Intensive Care Unit Practice 75
Reticulocyte parameters 75
Absolute reticulocyte count 76
Immature reticulocyte fraction 77
Reticulocyte hemoglobin content 77
Quantifying the leukocyte left shift 79
Immature platelet fraction 81
Summary 84
REFERENCES 85
8 - How Near Are We to Using Darbepoetin or Erythropoietin as Neuroprotective Agents for Perinatal Hypoxic-Ischemic Encephalopathy? 87
Neonatal encephalopathy caused by hypoxic-ischemic encephalopathy 87
Neuroprotective strategies that can complement therapeutic hypothermia 88
Hypoxia-ischemia and erythropoiesis-stimulating agents 88
Overview of erythropoiesis-stimulating agents in neuroprotection 89
Preclinical trials of molecular mechanisms of neuroprotection 89
Preclinical studies combining hypothermia and erythropoiesis-stimulating agents 90
Erythropoiesis-stimulating agents pharmacokinetics under hypothermic conditions 91
Erythropoiesis-stimulating agents levels in central nervous systems 92
Rationale for Erythropoiesis-stimulating agent Dosing for Neuroprotection 93
Safety concerns with erythropoiesis-stimulating agents 94
Clinical trials of erythropoiesis-stimulating agents and neonatal neuroprotection 95
Clinical studies of erythropoiesis-stimulating agents as adjunctive therapy to hypothermia for neonatal encephalopathy 96
Conclusion 97
REFERENCES 97
9 - How Do We Adopt Anemia-Preventing Strategies in Our Delivery Rooms? 103
Normal hemoglobin at birth 103
Prevalence of anemia 103
Transfusion rates 107
Transfusion risks 107
Intraventricular hemorrhage 107
Necrotizing enterocolitis 107
Bronchopulmonary dysplasia 108
Mortality 108
Decreasing anemia and transfusions in the delivery room: two interventions 108
Placental transfusion 109
Optimal timing of delayed cord clamping 111
Risks of placental transfusion 111
Benefits of placental transfusion 111
Long-term outcomes 111
Society recommendations 112
Use of umbilical cord blood for admission laboratory testing 113
Placental anatomy 113
Laboratory tests performed on umbilical cord blood 113
Complete blood count 113
Blood culture 115
Blood type and antibody screen 115
Newborn metabolic screen 116
Neonatal outcomes of umbilical cord blood sampling 116
Conclusion 116
REFERENCES 116
10 - Thrombocytopenia in Infants with Necrotizing Enterocolitis 121
Severity and timing of thrombocytopenia 121
Pathophysiology of thrombocytopenia 122
Platelet transfusions for necrotizing enterocolitis 123
Potential alternative therapies for thrombocytopenia 124
Summary 124
REFERENCES 124
11 - Genetic Basis of Necrotizing Enterocolitis 127
Single nucleotide polymorphisms associated with immune or microbial response or cytokines 128
Single nucleotide polymorphisms associated with vascular function or antioxidants 130
Single nucleotide polymorphisms in other genes 131
Genome-wide association studies 131
Summary 132
REFERENCES 132
12 - Genetic Basis of Patent Ductus Arteriosus 137
Genetic approaches to patent ductus arteriosus 137
Linkage analysis 137
Twin and family-based studies 138
Genome-Wide Association Studies 138
Next-Generation Sequencing 138
Animal models of patent ductus arteriosus genetics 139
Patent ductus arteriosus in term infants 140
Patent ductus arteriosus in preterm infants 141
Patent ductus arteriosus and environmental risk factors 142
Treatment 144
Conclusion 145
REFERENCES 145
13 - Genetic Basis of Bronchopulmonary Dysplasia 149
Investigating the contribution of genetics to disease pathogenesis 149
Twin studies in bronchopulmonary dysplasia 151
Variants associated with lung growth and development 154
SPOCK2 154
Matrix metalloproteinase 16 154
Thrombospondin 1, cluster of differentiation 36, protein-C-ets-1, and lymphoid enhancing binding factor 154
Vascular endothelial growth factor 155
Interleukin (IL)-6 and -10 155
Dystroglycan 156
The Wnt signaling pathway 156
Variants associated with inflammatory pathways 156
Interleukin-18 156
Interferon-gamma 157
Tumor-necrosis-alpha 157
Toll-like receptors 157
Kit ligand 158
Superoxide dismutase 158
Nuclear factor–erythroid-2–related factor 2 159
Macrophage migration inhibitory factor 159
Mannose binding lectin 159
Miscellaneous 160
Vitamin D receptor 160
Factor VII 160
Surfactant proteins 160
Epigenetics 161
Micro-RNAs 161
Conclusion 161
REFERENCES 162
14 - Prenatal Genetic Testing 165
Chromosomal microarray analysis 166
Should prenatal chromosome microarray technology replace a standard karyotype for diagnostic studies? 166
Screening for fetal aneuploidy 167
Validation studies: noninvasive prenatal screening versus conventional screening 168
Noninvasive prenatal screening controversies 169
Should noninvasive prenatal screening replace conventional screening for average-risk singleton pregnancies? 169
Should first-trimester ultrasound be eliminated when noninvasive prenatal screening is normal? 169
Expanded carrier screening 170
Should expanded carrier screening be universal? 170
What should be the lowest carrier frequency of conditions used to determine universal carrier screening? 170
Summary 171
REFERENCES 171
15 - Early Diagnosis of Severe Combined Immunodeficiency 173
Stages of T-cell development 174
T-cell receptor excision circles 174
Newborn screening for SCID 175
Challenges and ethical questions 177
Approach to abnormal screening 178
Clinical features 179
SCID variants identified before screening 179
SCID variants identified after screening 179
Prematurity 179
Immunologic features 183
Genetic variability 183
X-linked SCID 184
RAG-deficient SCID 184
Adenosine deaminase SCID 184
SCID with cartilage-hair hypoplasia 185
Radiosensitive SCID 185
SCID phenotype with absent thymus (athymia) 185
Genetic approach beyond SCID genetic panel 185
X-inactivation studies 186
Beyond newborn screening for SCID: genetic testing for primary immunodeficiencies in infancy 186
Management of SCID 186
Vaccines 186
Prophylaxis 186
Hematopoietic stem cell transplantation 186
Gene therapy 187
Adenosine deaminase enzyme replacement therapy 187
Public health impact 188
REFERENCES 188
16 - Newborn Screening 195
Newborn screening process 196
False-positive results in neonatal intensive care unit 196
Evolution of the newborn screening panel 196
Disorders in recommended uniform screening panel 197
Endocrine disorders 197
Hemoglobin disorders 198
Metabolic disorders 200
Organic acidemias 200
Fatty acid oxidation disorders 200
Amino acid disorders 200
Genetic disorders 201
Other disorders 202
Future directions 202
Summary and conclusion 202
REFERENCES 203
Index 205
A 205
B 205
C 206
D 206
E 206
F 207
G 207
H 207
I 208
J 209
K 209
L 209
M 209
N 209
O 210
P 210
R 211
S 211
T 212
U 213
V 213
W 213
X 213
Z 213
IBC ES2