Enhancement of rat spermatozoal hyperactivation by progesterone
Progesterone (P) is a well-known enhancer of hyperactivation which is associated with the success of in vitro fertilization (IVF). In this study, we examined whether P-enhanced hyperactivation affected IVF success in rats. When rat spermatozoa were exposed to 10, 20, and 40 ng/ml P, 20 ng/ml P enhan...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The Society for Reproduction and Development
2023-09-01
|
| Series: | The Journal of Reproduction and Development |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jrd/69/5/69_2023-040/_pdf/-char/en |
| Summary: | Progesterone (P) is a well-known enhancer of hyperactivation which is associated with the success of in vitro fertilization (IVF). In this study, we examined whether P-enhanced hyperactivation affected IVF success in rats. When rat spermatozoa were exposed to 10, 20, and 40 ng/ml P, 20 ng/ml P enhanced hyperactivation via the membrane progesterone receptor. In addition, the enhancement of hyperactivation by 20 ng/ml P was regulated by phospholipase C, transmembrane adenylate cyclase, and protein kinase A. However, 20 ng/ml P did not affect IVF success. These results suggest that 20 ng/ml P enhances rat spermatozoal hyperactivation through non-genomic pathways. Because the concentration of P changes during the estrous cycle, it seems that rat spermatozoa are hyperactivated in response to the oviductal environment. However, the effect of 20 ng/ml P does not seem to fully capacitate spermatozoa. |
|---|---|
| ISSN: | 0916-8818 1348-4400 |