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The prophylactic effects of folic acid and vitamin E against valproic acid during fetal thymus development: an ultrastructural study / Los efectos profilácticos del ácido fólico y la vitamina E contra el ácido valproico durante el desarrollo fetal del timo: un estudio ultraestructural
Pamukcu Baran, Ozlem; Tunik, Selcuk; Akkoc, Hasan; Devieci, Engin; Ayaz, Ercan; Soker, Sevda; Kalkanli Tas, Sevgi; Akkus, Murat.
  • Pamukcu Baran, Ozlem; Dicle University. Faculty of Medicine. Department of Histology and Embryology. TR
  • Tunik, Selcuk; Dicle University. Faculty of Medicine. Department of Histology and Embryology. TR
  • Akkoc, Hasan; Dicle University. Faculty of Medicine. Department of Pharmacology. TR
  • Devieci, Engin; Dicle University. Faculty of Medicine. Department of Histology and Embryology. TR
  • Ayaz, Ercan; Dicle University. Faculty of Medicine. Department of Histology and Embryology. TR
  • Soker, Sevda; Dicle University. Faculty of Medicine. Department of Histology and Embryology. TR
  • Kalkanli Tas, Sevgi; Dicle University. Faculty of Medicine. Department of Biology. TR
  • Akkus, Murat; Dicle University. Faculty of Medicine. Department of Histology and Embryology. TR
Int. j. morphol ; 29(4): 1093-1098, dic. 2011. ilus
Article in English | LILACS | ID: lil-626970
ABSTRACT
To evaluate histopathologic differences in the thymus of Wistar Albino rat fetuses prenatally exposed to valproic acid (VPA), folic acid (FA) and vitamin E (Vit-E). VPA (400 mg/kg), FA (400 mcg/kg) and Vit -E (250 mg/kg) were administered to rats on each of gestation days 8, 9 and 10. The fetuses (n24) were divided into four groups control, VPA, VPA+Vit-E and VPA+FA groups. On the 20th day of gestation, all pregnant rats were sacrificed and the fetuses were extracted. Thin sections from thymus of live fetuses were stained with uranyl acetate-lead citrate and were examined under transmission electron microscope. The histopathological findings of control group was normal. In VPA group, it showed extensive degenerative changes by VPA were on all tissue compartments when compared to controls. In VPA-FA group, vacuoles, mitochondrial cristalysis and swelling were decreased in cytoplasm. In VPA-Vit-E group, lipid storage and vacuolization were observed. Mitochondrial cristalysis decreased. Our aim in the present study is to analyze histopathological changes which may occur in a high risk experimental model after giving of VPA. In addition, protective roles of the administration of FA and Vit-E are assessed.
RESUMEN
Se realizó este estudio para evaluar las diferencias histopatológicas en el timo de fetos de ratas Wistar Albinas expuestas prenatalmente a ácido valproico (VPA), ácido fólico (AF) y vitamina E (Vit-E). VPA (400 mg/kg), FA (400 mcg/kg) y vitamina E (250mg/kg) administradas a ratas en los días 8, 9 y 10 de gestación. Los fetos (n=24) fueron divididos en cuatro grupos control, APV, APV + vitamina E y VPA + FA. En el día 20 de gestación, todas las ratas preñadas fueron sacrificadas y los fetos fueron extraídos. Se obtuvieron secciones delgadas del timo de los fetos y se tiñeron con citrato de uranilo - acetato de plomo, siendo examinados al microscopio electrónico de transmisión. Los hallazgos histopatológicos del grupo control fueron normales. En el grupo VPA, se observaron cambios degenerativos en todos los compartimentos de tejido en comparación con los controles. En el grupo VPA+FA, las vacuolas, cristalisis mitocondrial e inflamación se redujeron en el citoplasma. En grupo VPA + Vitamina E, se observó el almacenamiento de lípidos y vacuolización. La cristalisis mitocondrial disminuyó. El estudio permitió analizar los cambios histopatológicos que pueden ocurrir en un modelo experimental de alto riesgo después de la administración de VPA, además, las funciones de protección por la administración de AF y vitamina E.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Thymus Gland / Vitamin E / Valproic Acid / Folic Acid Type of study: Prognostic study Limits: Animals / Pregnancy Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2011 Type: Article Affiliation country: Turkey Institution/Affiliation country: Dicle University/TR

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Full text: Available Index: LILACS (Americas) Main subject: Thymus Gland / Vitamin E / Valproic Acid / Folic Acid Type of study: Prognostic study Limits: Animals / Pregnancy Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2011 Type: Article Affiliation country: Turkey Institution/Affiliation country: Dicle University/TR