InVet 2022, 24 (1): 01-10 ARTÍCULO DE INVESTIGACIÓN ISSN...
Chronic stress during pregnancy can alter the adrenal cortex morphology and its vasculature. Vascular endothelial growth factor (VEGF) is involved in vascularization and angiogenesis. The objective of this study was to evaluate the effects of maternal chronic stress on plasma corticosterone levels a...
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| Autores principales: | , , , |
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| Formato: | Artículo publishedVersion |
| Lenguaje: | Español |
| Publicado: |
Universidad de Buenos Aires. Facultad de Ciencias Veterinarias
2022
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| Materias: | |
| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_7090 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_7090.dir/7090.PDF |
| Aporte de: |
| Sumario: | Chronic stress during pregnancy can alter the adrenal cortex morphology and its vasculature. Vascular endothelial growth factor (VEGF) is involved in vascularization and angiogenesis. The objective of this study was to evaluate the effects of maternal chronic stress on plasma corticosterone levels and on the distribution of VEGF immunostaining in the adrenal cortex of pregnant rats. Immobilization stress was applied from the fourth day of gestation until sacrifice at 12, 17 and 21 days of gestation. Radioimmunoassay, immunolabeling and cell count techniques were used. In stressed pregnant rats, a significant increase (p<0.05) in plasma corticosterone levels was observed at all gestation times analyzed. Immunolocalization revealed VEGF in the fascicular and in the reticular-like zone, but not in the glomerular zone of the adrenal cortex. A significant decrease in the VEGF labeling was identified at day 17 of gestation in the stressed group (p<0.05). These results demonstrate that the immobilization is an intense stressor stimulus and that the glucocorticoids produced could decrease the VEGF synthesis. |
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