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Morphological study of surgically induced open neural tube defects in chick embryos--postoperative 24 hours.

For the experimental study of neural tube defect (NTD), a surgical model has advantages over other models in a few aspects. It causes less functional derangement of cells and the NTDs can be made selectively by surgery. The authors planned to use the surgical model for the experimental study of NTD....

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Detalles Bibliográficos
Autores principales: You, H., Sim, K. B., Wang, K. C., Kim, D. G., Kim, H. J.
Formato: Texto
Lenguaje:English
Publicado: Korean Academy of Medical Sciences 1994
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3053952/
https://www.ncbi.nlm.nih.gov/pubmed/7986386
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author You, H.
Sim, K. B.
Wang, K. C.
Kim, D. G.
Kim, H. J.
author_facet You, H.
Sim, K. B.
Wang, K. C.
Kim, D. G.
Kim, H. J.
author_sort You, H.
collection PubMed
description For the experimental study of neural tube defect (NTD), a surgical model has advantages over other models in a few aspects. It causes less functional derangement of cells and the NTDs can be made selectively by surgery. The authors planned to use the surgical model for the experimental study of NTD. As the first step for the studies, the chronological changes of morphology during the early postoperative period were investigated using postincubation 3-day chick embryos. The objectives of this study are (1) the morphological evaluation of the surgical model as a method for studies of open NTD, and (2) the observation of morphological changes for the first 24 hours after surgery which include 'overgrowth' appearance and the continuity between the surface ectoderm and the neuroectoderm. The morphological changes were observed by light microscope and scanning electron microscope. Immediately after surgery, typical open NTDs were observed. Morphologically they were very similar to the appearance of spontaneous (non-surgical) open NTDs. The opened neural tubes were everted progressively and they looked rather flat at 24 hours after surgery. Cellular hyperplasia ('overgrowth' appearance) was noted within 24 hours after surgery and became more prominent during the 24 hours. There was increasing continuity between the surface ectoderm and the neural tissue until 24 hours after surgery when the continuity looked almost complete. In conclusion, surgically induced NTDs are morphologically very similar to spontaneous NTDs.(ABSTRACT TRUNCATED AT 250 WORDS)
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spelling pubmed-30539522011-03-15 Morphological study of surgically induced open neural tube defects in chick embryos--postoperative 24 hours. You, H. Sim, K. B. Wang, K. C. Kim, D. G. Kim, H. J. J Korean Med Sci Research Article For the experimental study of neural tube defect (NTD), a surgical model has advantages over other models in a few aspects. It causes less functional derangement of cells and the NTDs can be made selectively by surgery. The authors planned to use the surgical model for the experimental study of NTD. As the first step for the studies, the chronological changes of morphology during the early postoperative period were investigated using postincubation 3-day chick embryos. The objectives of this study are (1) the morphological evaluation of the surgical model as a method for studies of open NTD, and (2) the observation of morphological changes for the first 24 hours after surgery which include 'overgrowth' appearance and the continuity between the surface ectoderm and the neuroectoderm. The morphological changes were observed by light microscope and scanning electron microscope. Immediately after surgery, typical open NTDs were observed. Morphologically they were very similar to the appearance of spontaneous (non-surgical) open NTDs. The opened neural tubes were everted progressively and they looked rather flat at 24 hours after surgery. Cellular hyperplasia ('overgrowth' appearance) was noted within 24 hours after surgery and became more prominent during the 24 hours. There was increasing continuity between the surface ectoderm and the neural tissue until 24 hours after surgery when the continuity looked almost complete. In conclusion, surgically induced NTDs are morphologically very similar to spontaneous NTDs.(ABSTRACT TRUNCATED AT 250 WORDS) Korean Academy of Medical Sciences 1994-04 /pmc/articles/PMC3053952/ /pubmed/7986386 Text en
spellingShingle Research Article
You, H.
Sim, K. B.
Wang, K. C.
Kim, D. G.
Kim, H. J.
Morphological study of surgically induced open neural tube defects in chick embryos--postoperative 24 hours.
title Morphological study of surgically induced open neural tube defects in chick embryos--postoperative 24 hours.
title_full Morphological study of surgically induced open neural tube defects in chick embryos--postoperative 24 hours.
title_fullStr Morphological study of surgically induced open neural tube defects in chick embryos--postoperative 24 hours.
title_full_unstemmed Morphological study of surgically induced open neural tube defects in chick embryos--postoperative 24 hours.
title_short Morphological study of surgically induced open neural tube defects in chick embryos--postoperative 24 hours.
title_sort morphological study of surgically induced open neural tube defects in chick embryos--postoperative 24 hours.
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3053952/
https://www.ncbi.nlm.nih.gov/pubmed/7986386
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