Central Nervous System Defects in Early Human Abortuses
- 1 June 1979
- journal article
- research article
- Published by Wiley in Developmental Medicine and Child Neurology
- Vol. 21 (3) , 321-332
- https://doi.org/10.1111/j.1469-8749.1979.tb01624.x
Abstract
SUMMARY: Thirteen embryos with various central nervous system (CNS) defects were examined macroscopically and by serial sectioning, and were compared with seven control embryos. All had been aborted spontaneously. Examples of anencephaly, anencephaly with spina bifida, spina bifida alone, encephalocele, iniencephaly and cyclops were found.Histological assessment was directed mainly to the CNS, the skeletal axis, the neural‐crest derivatives and remaining viscera. The CNS was affected by postmortem change in some cases. Brain tissue was absent in most anencephalie embryos and spinal‐cord tissue was absent at the level of the external lesion in all except one of the spina‐bifida embryos. Defects such as diastematomyelia were found occasionally. Widespread abnormalities were found in the cartilaginous vertebral column. The meninges were unusually vascular, but other neural crest derivatives appeared to be normal.The possible causes of absent brain or spinal cord are discussed and the findings are compared with the pathology of CNS defects in childhood.RÉSUMÉ: Défauts du systéme nerveux central dans les avortements humains précoces 13 embryons avec défauts varies du système nerveux central (SNC) ont été examinés macroscopiquement et par sections sériées, compareés avec sept contrôles. Tous venaient d' avortements spontanés. Des cas d' anencéphalie, d' anencéphalie avec spina bifida, de spina bifida seul, d' encéphalocèle, d' iniencéphalie et de cyclopes ont été trouvés.L'exploration histologique fut dirigée principalement vers le SNC, l' axe squelettique, les dérivés de la crête neurale et les viscères restants. Le SNC était altéré par des modifications post‐mortem dans quelques cas. Le tissu cérébral était absent dans la plupart des anencéphalies et le tissu médullaire était absent au niveau de la lésion externe dans tous les cas sauf un de spina bifida. Des anomalies étendues ont été trouvées dans la colonne vertebrale cartilagineuse. Les méninges étaient vascularisées de façon inhabituelle. Les causes possibles de l' absence de cerveau ou de moelle épinière sont discutées et les données obtenues sont compareées avec la pathologie des altérations du SNC dans l'enfance.ZUSAMMENFASSUNG:This publication has 21 references indexed in Scilit:
- Pathogenesis of trypan‐blue‐induced spina bifidaThe Journal of Pathology, 1976
- Deformities of the Cervical Cord in Children with Neurospinal DysraphismDevelopmental Medicine and Child Neurology, 1971
- Lipomas of the Cauda Equina and other Fatty Tumours Related to Neurospinal DysraphismDevelopmental Medicine and Child Neurology, 1969
- Studies on the Embryogenesis of Spina Bifida in the RatDevelopmental Medicine and Child Neurology, 1968
- DEVELOPMENTAL DISTURBANCE OF THE BRAIN INDUCED BY GERMAN MEASLES IN AN EMBRYO OF THE 7TH WEEKCells Tissues Organs, 1957
- AN ANENCEPHALIC HUMAN EMBRYO OF 33.5 MILLIMETRESCells Tissues Organs, 1956
- HUMAN ANENCEPHALY IN EARLY DEVELOPMENTAL STAGESCells Tissues Organs, 1955
- An anencephalic human embryo 16.5 MM. longThe Anatomical Record, 1937
- Description of a young human anencephalic and amyelic embryoThe Anatomical Record, 1927