Embryopathy in experimental diabetic gestation:assessment of PGE2 level, gene expression of cyclooxygenases and apoptosis.

Embryopathy in experimental diabetic gestation:assessment of PGE2 level, gene expression of cyclooxygenases and apoptosis. Br J Biomed Sci. 2005 Jan;62(4):161-165 Authors: El-Bassiouni EA, Helmy MH, Rawash A, El-Zoghby SM, El-Nabi Kamel A, Raya A Abstract The causes of, and predisposing conditions for, increased congenital anomalies in embryos of experimental diabetic gestation are not fully identified. In the present study, some possible factors involved in diabetes-induced embryopathy are explored. The concentration of PGE2, the gene expression of cyclooxygenases (COX-1 and COX-2) and level of apoptosis (measured by caspase-3 activity) are assessed during organogenesis in the embryos of streptozotocin-induced diabetic rats. The concentrations of PGE2 in the embryos of diabetic rats were lower than controls, with the lowest values in malformed embryos and their associated membranes (yolk sacs). The pattern of change in PGE2 was similar in the embryos of the control and diabetic groups, which showed a steady decline between days 9 and 11 of gestation. These changes in PGE2 were accompanied by a small decrease in COX-1 expression in all embryos and associated membranes during the same gestational period. Expression of COX-2, which was below normal in diabetic embryos, decreased between days 9 and 11 of gestation in all groups. In the membranes of non-malformed embryos, COX-2 expression peaked on day 10 of gestation. It was found that ...
Source: British Journal of Biomedical Science - Category: Laboratory Medicine Tags: Br J Biomed Sci Source Type: research