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The Impact of Prenatal Exposure to Dexamethasone on Gastrointestinal Function in Rats

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Resumo:Antenatal treatment with synthetic glucocorticoids is commonly used in pregnant women at risk of preterm delivery to accelerate tissue maturation. Exposure to glucocorticoids during development has been hypothesized to underlie different functional gastrointestinal (GI) and motility disorders. Herein, we investigated the impact of in utero exposure to synthetic glucocorticoids (iuGC) on GI function of adult rats. Wistar male rats, born from pregnant dams treated with dexamethasone (DEX), were studied at different ages. Length, histologic analysis, proliferation and apoptosis assays, GI transit, permeability and serotonin (5-HT) content of GI tract were measured. iuGC treatment decreased small intestine size and decreased gut transit. However, iuGC had no impact on intestinal permeability. iuGC differentially impacts the structure and function of the GI tract, which leads to long-lasting alterations in the small intestine that may predispose subjects prone to disorders of the GI tract.
Autores principais:Ramalhosa, Fátima
Outros Autores:Soares-Cunha, Carina; Seixal, Rui Miguel; Sousa, Nuno; Carvalho, Ana Raquel Franky Gomes
Assunto:Animals Apoptosis Cell Proliferation Dexamethasone Female Gastrointestinal Motility Intestine, Small Male Organ Size Permeability Pregnancy Prenatal Exposure Delayed Effects Rats Rats, Wistar Serotonin Ciências Médicas::Medicina Básica
Ano:2016
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso restrito
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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