| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 2594369 | Reproductive Toxicology | 2012 | 10 Pages |
Neonatally diethylstilbestrol (DES) treatment causes hypertrophy-hyperplasia in the interstitial tissue of mouse ovaries. To understand the induction mechanism of the hypertrophy, mRNA expression involved in steroidogenesis in the ovary of neonatally DES-treated mice was examined. The expression of StAR and Cyp11a1 was significantly reduced while Cyp19 and Sf-1 were stimulated in the ovary of neonatally DES-treated 3-month-old mice. Expression of those genes was not different between DES- and oil-treated mice after the gonadotropins treatment. Lhb in the pituitary of 3-month-old neonatally DES-treated mice was significantly decreased. Finally, ovaries from DES-treated mice transplanted to neonatally oil-treated hosts had developing follicles at several stages and corpora lutea, whereas grafted ovaries from neonatally oil-treated mice in 3-month-old neonatally DES-treated hosts showed lipid accumulation in the interstitial tissue. Thus, hypertrophy and accumulation of lipid droplets in interstitial cells of neonatally DES-treated mice is caused by impaired steroidogenesis due to the alterations of gonadotropins levels.
► Neonatally diethylstilbestrol (DES) treatment causes hypertrophy-hyperplasia in the ovary. ► mRNA expression involved in steroidogenesis in neonatally DES-treated mice was altered. ► Lhb in the pituitary of neonatally DES-treated mice was decreased. ► After the gonadotropins treatment, gene expression was similar to that of oil-treated mice. ► Hypertrophy was caused by impaired steroidogenesis due to the changes of gonadotropins levels.
