Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/196379
Type: Artigo de periódico
Title: Arnold-chiari In A Fetal Rat Model Of Dysraphism.
Author: Weber Guimarães Barreto, Maria
Ferro, Marcelo M
Guimarães Bittencourt, Daniel
Violin Pereira, Luis A
Barini, Ricardo
Sbragia, Lourenço
Abstract: Dysraphism is a defect in neural tube development, leading to dysplastic growth of the spinal cord and meninges. Myelomeningocele (MM) is just one of its forms. Hydrocephalus is among the most important alterations in MM and occurs as a consequence of Arnold-Chiari malformation (AC). Experimental models have been developed in sheep, rabbits and rats to study MM physiopathology, allowing a more detailed evaluation of clinical parameters involved in this anomaly. Using the experimental model of dysraphism in fetal rats, the aim of this study was to evaluate the relevance of AC malformations, clinical parameters and grade of histological lesions. Three groups with 16 fetuses in each were compared, MM, Control and Sham, after intrauterine surgical creation of MM on day 18.5 of gestation (term = 22 days). AC was evaluated by photographic comparison of sagittal cuts of fetal heads. Clinical and histological evaluations were also made. 88% of AC (14/16) in MM fetuses were obtained, besides 100% of clinical alterations. Necrosis and erosion of the spinal cord exposed to amniotic fluid were verified in histology. The presence of AC in the dysraphism rat model was high. These results allowed the use of this model to study alterations and intrauterine evolution of MM in a fashion similar to those observed in humans.
Subject: Animals
Arnold-chiari Malformation
Disease Models, Animal
Female
Male
Meningomyelocele
Pregnancy
Rats
Rats, Sprague-dawley
Spinal Dysraphism
Rights: fechado
Identifier DOI: 10.1159/000086827
Address: http://www.ncbi.nlm.nih.gov/pubmed/16113568
Date Issue: -1-Uns- -1
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.