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Ultrastructural changes in rat ovarian cells of fetuses and neonates from diabetic mothers

Comparative Clinical Pathology, ISSN: 1618-565X, Vol: 23, Issue: 5, Page: 1167-1171
2014
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Article Description

Maternal diabetes leads to increased blood glucose concentration in the mother and consequently in the fetus, causing various neonatal problems. This study was conducted to evaluate the effect of maternal diabetes on fetal ovarian structure. Forty adult female rats were divided into two equal groups. Diabetes was induced in one group by alloxan. Both groups became pregnant by natural mating. At days 14 to 20 of pregnancy and day 30, day 60, and day 90 after birth, the fetuses and neonates were collected from both groups and the female genital system was isolated from them. The numbers of germ cells were measured using routine histological techniques in fetuses. In the neonatal ovarian samples, various cellular parameters were determined using transmission electron microscopy (TEM) technique. Results revealed a significant decrease in the number of germ cells in the fetal female gonads in the gonads of fetuses from diabetic mothers compared to those of control. Results of TEM revealed some differences in the luteal cells and oocytes of primordial follicles in ovaries of neonates from diabetic mothers compared to that of control. Mitochondrial abnormalities were seen as mitochondrial cristae were destroyed and vacuolation occurred in the mitochondria and the nuclei of luteal cells were darken and condensed. It is generally concluded that maternal hyperglycemia affects fetal female gonads illustrated by a decrease in the oocytes and alteration in the mitochondria and nuclei of oocytes and luteal cells in neonatal ovaries.

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