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Bovine Meroanencephaly and Gastroschisis: a Macro and Microscopic Study
Author(s) -
Alberto M. L. V.,
Trujillo H. A. G.,
Riveros A. C. G.,
Lima E. B.,
Miglino M. A.,
Santos J. M.
Publication year - 2008
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1111/j.1439-0264.2007.00826.x
Subject(s) - coelom , anatomy , embryo , gastroschisis , biology , neuroepithelial cell , abdominal cavity , heredity , fetus , abdominal wall , dorsum , embryonic stem cell , pregnancy , microbiology and biotechnology , genetics , gene
Summary Congenital malformations correspond to one of the main causes of embryonic loss during the gestational process. They result from interaction of several factors such as multifactor heredity, chromosomal and genetic alterations and environmental agents; however, unknown aetiology also can be present. In this article, we have used 10 embryos, from a frigorific area of Dracena, SP, Brazil, which were fixed in Bouin solution for a macro‐ and micro‐scopic description. We could verify the presence of an encephalic tissue mass on the embryo’s dorsal cranial area, resulting from the non‐formation of part of the cranial cap and from the non‐closing of cephalic neuropore and consequent neuroepithelial cells disorganization. In the abdominal area, the embryos did not show the complete fusion of the body lateral pleats during the abdominal wall formation, and the liver extruded into the amniotic cavity without involvement of the intestine.