Preface | p. 134 |
Introductory Matters | |
Coincidental discoveries | p. 136 |
Early genetic studies | p. 136 |
Definitions | |
Introduction: styles | p. 136 |
A small parenthesis | p. 137 |
Congenital means present at birth | p. 137 |
Malformations: abnormalities of structure | p. 138 |
Recognition of malformations | p. 138 |
Major and minor malformations | p. 138 |
Minor malformations and variants | p. 139 |
Classification | |
Introduction: why classify | p. 139 |
Classification by cause | p. 139 |
Classification by type | p. 140 |
Classification by pathogenesis | p. 141 |
Nomenclature | p. 141 |
Taxonomic innovations | p. 142 |
The developmental field concept | p. 143 |
Frequency | |
Introduction: early findings | p. 143 |
Difficulties of establishing frequency | p. 144 |
A matter of names | p. 144 |
How often do malformations happen? | p. 145 |
A definite definition | p. 145 |
An aside | p. 145 |
Why investigate malformation frequency | p. 145 |
Ascertainment | p. 146 |
Underestimating frequency | p. 146 |
Overestimating frequency | p. 146 |
Biological factors | p. 147 |
Miscellaneous factors | p. 147 |
Early Human Studies | |
Introduction: the principal objective | p. 148 |
X-irradiation | |
Introduction: animal studies | p. 148 |
Human pelvic irradiation | |
Introduction: early radiation use | p. 148 |
An irradiation-caused abnormality | p. 149 |
Eye abnormalities | p. 149 |
Dose, time, and effects | p. 149 |
Dose matters | p. 150 |
Murphy's contribution | p. 150 |
Atomic radiation | |
The Hiroshima and Nagasaki bombs | p. 150 |
What these studies found | p. 150 |
Microcephaly and mental retardation | p. 151 |
Other radiation sources | p. 151 |
Rubella | |
Introduction: new perception | p. 152 |
The discovery | p. 152 |
The German measles epidemic | p. 152 |
Teratological principles | p. 152 |
Timing and malformation pattern | p. 152 |
The 1964 epidemic | p. 153 |
Time versus agent: the 'critical' period | p. 153 |
The debate | p. 154 |
Gestational age and frequency | p. 154 |
An old disease | p. 155 |
A teratogen disappears | p. 155 |
Other infectious diseases | |
Influenza | p. 155 |
Cytomegalovirus | p. 155 |
Toxoplasmosis | p. 156 |
Varicella-zoster virus | p. 156 |
Problems regarding intrauterine infection | p. 156 |
Intrauterine infection in animals | p. 157 |
Pioneering Works | |
Irradiation studies not appreciated | p. 157 |
Vitamin deficiency | |
Hale and deficiency of vitamin A | p. 157 |
Discovery greeted skeptically | p. 158 |
Warkany and deficiency of riboflavin | p. 158 |
Searching for the cause | p. 158 |
The all-important details | p. 159 |
Cautions and critics | p. 159 |
Early Experiments | |
Introduction: new needs and ideas | p. 159 |
Principles of teratology | p. 160 |
Vitamin A and diaphragmatic hernia | p. 160 |
Power of genetics | p. 161 |
Basis of diaphragmatic hernia | p. 161 |
Early investigators | p. 162 |
Trypan blue | p. 162 |
Trypan blue's teratogenic 'mechanism' | p. 162 |
Hypoxia | p. 162 |
A little break: Down syndrome | p. 163 |
Cortisone studies and by-products | p. 163 |
Relevance to humans | p. 164 |
Induced and spontaneous malformations | p. 164 |
Genetics and individual responses | p. 164 |
The multifactorial/threshold concept | p. 164 |
A new concept of embryotoxicity | p. 165 |
A variety of experiments | p. 165 |
Vitamin antimetabolites | p. 165 |
Folic acid | p. 166 |
Folic acid antimetabolite human use | p. 166 |
New Challenges | |
Infant mortality and malformations | p. 166 |
Teratology conferences | p. 167 |
The Teratology Society | p. 167 |
Thalidomide | |
The event | p. 167 |
The thalidomide syndrome | p. 168 |
The revelation | p. 168 |
Thalidomide: safety and sales | p. 169 |
Toxicity in adults | p. 169 |
Thalidomide in the USA | p. 169 |
Thalidomide's teratogenic mechanism | p. 170 |
Dose- and time-response relations | p. 170 |
Animal studies with thalidomide | p. 171 |
Postscript: was anyone to blame? | p. 172 |
The future? | p. 172 |
Testing for Teratogenicity | |
Proposals for drug testing | p. 173 |
The procedure | p. 174 |
The consequence | p. 174 |
The dose-response curve | p. 174 |
Teratogens and mutagens | p. 174 |
Teratological Detours | |
Bendectin | |
The product | p. 175 |
Alleged teratogenicity | p. 176 |
Legal action | p. 176 |
Blighted potatoes | |
Search for the cause of NTD | p. 177 |
Were potatoes the answer? | p. 177 |
Animal studies | p. 177 |
Avoidance trials | p. 177 |
Female sex hormones | |
Genital defects | p. 178 |
Nongenital defects | p. 178 |
Defect nonspecificity | p. 178 |
Diethylstilbestrol | |
Introduction: fetal wastage | p. 179 |
DES usage | p. 179 |
The revelation | p. 179 |
Dosage and timing | p. 179 |
The Registry | p. 179 |
The Project | p. 180 |
Critique | p. 180 |
Congenital abnormalities | p. 180 |
Summary and conclusion | p. 181 |
Surveillance of Congenital Malformations | |
Introduction: fears and demands | p. 181 |
Surveillance and monitoring | p. 181 |
Monitoring's limited abilities | p. 182 |
Epidemiology of Congenital Malformations | |
The classical method | p. 182 |
Epidemiology of malformation communities | p. 183 |
Familial studies | p. 183 |
Pyloric stenosis | p. 183 |
Clefts of the lip and palate | p. 184 |
Neural tube defects | p. 184 |
Human Disease as Teratogen | |
Phenylketonuria | |
Introduction: discovery and basis | p. 186 |
Pregnancy outcome | p. 186 |
Congenital malformations | p. 186 |
Mental retardation in balance | p. 186 |
Intrauterine growth retardation, microcephaly, and mental retardation | p. 187 |
Dose and time matters | p. 187 |
PKU varieties | p. 187 |
Maternal PKU therapy | p. 188 |
PKU frequency | p. 188 |
Population malformation load | p. 188 |
PKU in animals | p. 189 |
Antagonist administration studies | p. 189 |
PKU mutants | p. 189 |
Embryo culture studies | p. 189 |
Histidinemia | p. 189 |
Final word | p. 190 |
Insulin-dependent diabetes mellitus | |
An old disease | p. 190 |
Pregnancy outcome | p. 190 |
Perinatal mortality | p. 190 |
Spontaneous abortion | p. 190 |
Later studies: glycosylated hemoglobin | p. 190 |
Congenital macrosomia | p. 191 |
Gestational diabetes | p. 191 |
Gestational diabetic outcomes | p. 191 |
Preconceptional diabetes and malformations | p. 191 |
Minor malformations in diabetic pregnancy | p. 192 |
Specific malformations | p. 192 |
Caudal dysplasia | p. 192 |
CNS malformations | p. 193 |
Cardiovascular malformations | p. 193 |
Principles of teratology: applied to diabetes | p. 194 |
Does diabetes obey teratological principles? | p. 194 |
Concluding remarks | p. 195 |
Hyperthermia | |
Environmental Hazards and Disasters | |
Introduction: widespread dangers | p. 197 |
Iodine deficiency | p. 197 |
The story of iodine | p. 197 |
Not an ordinary teratogen | p. 197 |
Endemic goiter | p. 197 |
Organic mercury | |
The Minamata epidemic | p. 199 |
Congenital Minamata disease | p. 199 |
Source of the methylmercury | p. 200 |
The Iraq epidemic | p. 200 |
Matters of environment and dose | p. 200 |
Studies elsewhere | p. 200 |
Agent Orange | |
Wartime use | p. 200 |
Male exposure toxicity | p. 201 |
Exposure of Vietnamese nationals | p. 201 |
Exposure of US military | p. 201 |
Ranch handers and reproduction | p. 202 |
Exposure of Australian military | p. 202 |
Agricultural and occupational herbicide exposure | p. 202 |
Herbicide exposure and the sex ratio | p. 203 |
The sex ratio phenomenon | p. 203 |
Human tampering and the sex ratio | p. 204 |
The political dimension | p. 205 |
The aftermath | p. 205 |
Seveso | p. 205 |
Sellafield | p. 206 |
Chernobyl | p. 207 |
Polychlorinated biphenyls | p. 207 |
Cola-colored babies | p. 207 |
PCB-exposed American children | p. 208 |
Love Canal: a study in political teratology | |
A chronology | p. 209 |
The mounting hysteria | p. 209 |
Love Canal and chromosomes | p. 210 |
The last word | p. 210 |
Disease Medication and Teratogenesis | |
Introduction | p. 210 |
Retinoids | p. 210 |
Vitamin A teratology | p. 210 |
Teratoepidemiology of vitamin A | p. 211 |
Risk assessment | p. 211 |
Synthetic retinoids | p. 212 |
Introduction: vitamin A toxicity | p. 212 |
Isotretinoin | p. 212 |
The population at risk | p. 212 |
The retinoic acid embryopathy | p. 213 |
Species dosage differences | p. 213 |
Further teratologic threat: etretinate | p. 213 |
Acitretin | p. 214 |
Dose-response relations | p. 214 |
Topical tretinoin use | p. 214 |
Anticonvulsant drugs | |
Introduction: the 'falling sickness' | p. 215 |
Therapy of epilepsy: fetal consequences | p. 215 |
Fetal hydantoin syndrome | p. 215 |
Recognizing minor defects | p. 216 |
Is epilepsy itself teratogenic? | p. 217 |
Epilepsy and spontaneous abortion | p. 217 |
Major congenital malformations | p. 218 |
Carbamazepine | p. 218 |
Valproic acid | p. 218 |
Altered anticonvulsant use | p. 219 |
Anticonvulsants and neurodevelopment | p. 219 |
Critique | p. 221 |
Summary | p. 221 |
Animal studies | p. 222 |
Lithium | |
Its discovery | p. 222 |
Its teratogenicity | p. 222 |
Ebstein's anomaly | p. 223 |
The retraction | p. 223 |
The finale | p. 224 |
Folic Acid and Human Malformations | |
Folic acid deficiency: long-debated effects | p. 224 |
Maternal folic acid status and NTD | p. 224 |
Later folate concentration studies | p. 225 |
The connection develops | p. 225 |
NTD definition | p. 226 |
Maternal vitamin usage and NTD | p. 226 |
Folic acid and NTD recurrence | p. 226 |
Folic acid and NTD occurrence | p. 228 |
Atlanta study | p. 229 |
NIH study | p. 229 |
Boston study | p. 229 |
The debate | p. 229 |
Two widely separated studies | p. 230 |
Other recent studies | |
Boston case-control study | p. 230 |
California study | p. 230 |
NTD: emigration and acculturation | p. 231 |
China study | p. 231 |
Has folic acid prevented NTD? | |
Folic acid food fortification | p. 232 |
NTD secular decline | p. 234 |
Terathanasia | p. 234 |
Prenatal diagnosis | p. 235 |
Has the secular decline continued? | p. 236 |
Addendum | p. 237 |
Genes and NTD risk | p. 237 |
Alcohol Consumption During Pregnancy | |
Introduction: blessing and curse | p. 237 |
Early Seattle study | p. 237 |
Fetal alcohol syndrome | p. 237 |
FAS expanded | p. 238 |
FAS specificity | p. 238 |
Diagnosing the FAS | p. 239 |
Fetal alcohol effects | p. 239 |
The epidemiological process | p. 240 |
Prospective studies | p. 240 |
Moderate drinking | p. 240 |
The NIH study | p. 241 |
Chronological overview | p. 241 |
A palpebral fissure parenthesis | p. 242 |
Major malformations | p. 246 |
Minor malformations | p. 246 |
Long-term effects on growth | p. 246 |
Retrospective studies | p. 247 |
Orofacial defects | p. 247 |
Limb defects | p. 248 |
Other conditions in older children | p. 248 |
Critique | p. 249 |
Alcohol and neurodevelopment | p. 249 |
Longitudinal studies | p. 249 |
Alcohol and spontaneous abortion | p. 250 |
Summary and critique | p. 252 |
Prevalence of the FAS | p. 252 |
The fundamental problem | p. 254 |
Animal abortion studies | p. 254 |
Finale | p. 254 |
B. Franklin on wine | p. 254 |
The Accomplishment and the Expectation | p. 255 |
Bibliography | p. 256 |
Index | p. 285 |
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