The effects of Kisspeptin antibodies on delayed estrus in rats.
Risvanli. Ali A; Apaydin. Ali Mukremin AM; Bulut. Hakan H; Timurkaan. Necati N; Saat. Nevzat N
Key Findings
- Passive immunization produced strong anti‑kisspeptin antibodies in all treated rats.
- No differences were observed in estrous cycle length, interval between cycles, estradiol levels, or ovarian follicle counts.
- GnRH receptor expression in the pituitary was unchanged between treated and control groups.
Practical Outcomes
- For biohackers interested in modulating reproductive hormones, this study suggests that simply raising anti‑kisspeptin antibodies is unlikely to affect menstrual timing or hormone levels. It provides early safety/inefficacy data, indicating that kisspeptin‑targeted antibody approaches may not be a useful self‑experiment for altering fertility or hormone balance.
Summary
Researchers gave rats antibodies that stick to kisspeptin-10 to see if it would change their reproductive cycle. The rats made the antibodies, but there was no change in estrus timing, hormone levels, or ovarian structure compared to normal rats.
Abstract
In recent years, numerous studies have been conducted on the effects of Kisspeptin/GPR54 system on sexual cycle, which proved that this system regulated gonadotropin release through GnRH. This study aims to determine the effects of hyperimmune serum containing antibodies produced against Kisspeptin on the sexual cycle and GnRH receptors in rat pituitaries. To this end, five Wistar female rats were passively immunised using a hyperimmune serum obtained from two Wistar female rats against Kisspeptin 10. Another five rats were selected as the control group. Anti-Kisspeptin antibodies of the hyperimmunised rats in the serum were identified by ELISA. The sexual cycles of the rats were followed by the measurements of vaginal irrigations and the estradiol concentrations in their blood samples. The number of follicles and corpora lutea in their ovaries was determined through histopathological tests, and the GnRH receptors in their pituitaries were identified by immunohistochemistry. Consequently, strong seropositivity was detected in all passively immunised rats and the hyperimmune serum. However, no difference was found between the groups with regard to the number of estrous cycles observed, the interval between estrous periods, estradiol concentrations, the number of follicles and corpora lutea and immunohistochemical results.
Study Information
pubmed
2010
2010-03-12T00:00:00.000Z
10.3109/09513590903367044
2
32