The paper explains that kisspeptin cells act as a bridge between sex hormones (like estrogen) and the brain signals that control reproductive hormones. In rodents, different groups of kisspeptin cells either help keep hormone levels steady (negative feedback) or trigger the big hormone surge that leads to ovulation (positive feedback). Similar patterns are seen in sheep and primates, with some extra kisspeptin cells in the brain that may also help with the ovulation surge.
The article shows that kisspeptin is a brain signal that starts the release of GnRH, the hormone that drives fertility hormones, and that genetic problems in this system cause puberty and reproductive issues.
Ramzan. Faiqah F; Khan. Muhammad Ayaz MA; Ramzan. Muhammad Haris MH
A 12‑day study in male mice showed that giving kisspeptin‑10 repeatedly lowered the amount of fructose in semen. Since seminal fructose is made by the seminal vesicles under testosterone control and is linked to sperm health, the drop suggests that chronic kisspeptin exposure could hurt male reproductive function.
The paper is a historical overview that shows kisspeptin is a key brain signal that turns on the hormone system controlling puberty and fertility, acting as a master switch for reproductive hormones.
Ribeiro. A B AB; Leite. C M CM; Kalil. B B; Franci. C R CR; Anselmo-Franci. J A JA; Szawka. R E RE
In rats, the peptide kisspeptin-10 boosts the hormone prolactin by turning down dopamine signals that normally keep prolactin low. This effect only happens when estrogen (or a similar hormone) is present, and it works in both male and female animals. The study shows that kisspeptin’s impact on prolactin is separate from its well‑known role in controlling reproductive hormones like LH.
Saito. Hayato H; Sawada. Tatsuru T; Yaegashi. Tomoyoshi T; Goto. Yuki Y; Jin. Jin J; Sawai. Ken K; H...
In a small goat study, a single IV dose of the peptide kisspeptin‑10 quickly raised the hormones that control reproduction—luteinizing hormone (LH) and testosterone—both before and after puberty, with a stronger LH spike in younger animals. The hormone patterns looked similar to those caused by the classic GnRH hormone.
Ozcan. Mete M; Alcin. Ergul E; Ayar. Ahmet A; Yilmaz. Bayram B; Sandal. Suleyman S; Kelestimur. Halu...
The study shows that a short form of the hormone‑like peptide kisspeptin (kisspeptin‑10) makes hypothalamic neurons fire a three‑step calcium signal, and that blocking protein kinase C (PKC) dampens this effect. This helps map how kisspeptin talks to the brain’s reproductive hormone system, but it’s done in a mouse cell line, not people.
Castellano. Juan Manuel JM; Tena-Sempere. Manuel M
The paper explains that the hormone kisspeptin acts as a bridge between the body's energy status (like how much food you have stored) and the brain's control of puberty and fertility. It talks about how signals such as leptin (a hormone that tells the brain about fat stores) may influence kisspeptin, and how changes in metabolism—whether from under‑nutrition or obesity—can affect reproductive health. The review also notes that some studies disagree about how essential kisspeptin is for these effects.
Ramzan. Faiqah F; Qureshi. Irfan Zia IZ; Ramzan. Muhammad M; Ramzan. Muhammad Haris MH; Ramzan. Faiz...
A study in young rats gave them kisspeptin‑10 for 12 days and found that even very low doses caused the cells in the seminal vesicles to shrink, lose structure, and show DNA damage, rather than helping the glands mature. The damage got worse with higher doses.
Sawyer. Iain I; Smillie. Sarah-Jane SJ; Bodkin. Jennifer V JV; Fernandes. Elizabeth E; O'Byrne. Kevi...
The study shows that kisspeptin‑10, a short peptide, can cause swelling and narrow tiny blood vessels in mouse skin, likely by triggering histamine and prostaglandin pathways. It also confirms the peptide’s receptor is present in heart, aorta and kidney. These findings suggest kisspeptin‑10 has direct effects on blood flow and fluid balance, but the work is limited to mice and does not provide human dosing guidance.
Min. Le L; Soltis. Kathleen K; Reis. Ana Claudia S AC; Xu. Shuyun S; Kuohung. Wendy W; Jain. Manisha...
The study shows that when kisspeptin binds to its receptor, the cell pulls the receptor inside and then puts it back on the surface. This recycling helps keep calcium levels high inside the cell, but only while kisspeptin is still around outside the cell.
The paper explains that a protein called kisspeptin, which helps control reproductive hormones, might be messed up in women with polycystic ovary syndrome (PCOS). While kisspeptin is important for normal ovulation, we still don’t have solid proof that changing its levels can fix PCOS, and the research so far is mostly theoretical.
Ramzan. Faiqah F; Qureshi. Irfan Zia IZ; Ramzan. Muhammad M; Ramzan. Muhammad Haris MH; Ramzan. Faiz...
In young male rats, giving kisspeptin-10 twice a day for 12 days caused the prostate to shrink and showed clear signs of cell damage, especially at higher doses. The hormone didn't speed up puberty; instead it hurt the prostate tissue.
Martin. Cecilia C; Navarro. Víctor M VM; Simavli. Serap S; Vong. Linh L; Carroll. Rona S RS; Lo...
The study shows that certain brain cells that respond to the hormone leptin (which signals fat stores) control fertility by influencing kisspeptin, a key driver of reproductive hormones. When leptin signaling in inhibitory (GABA) neurons is blocked, mice become obese and have messed‑up reproductive cycles, but giving them kisspeptin-10 still triggers hormone release, indicating the downstream pathway works. This tells us that leptin’s effect on fertility runs through kisspeptin‑producing neurons.
Kisspein-10 not only hits its main target (the GPR54 receptor that controls reproductive hormones) but also strongly activates a different set of receptors called NPFFR1 and NPFFR2, which are involved in things like pain and appetite. Shorter kisspein fragments are more selective and don’t hit those side receptors as much.
Jeon. Young Eun YE; Lee. Kyung Eun KE; Jung. Ji Ann JA; Yim. Su Youn SY; Kim. HyeYeon H; Seo. Seok K...
In women with polycystic ovary syndrome (PCOS), especially those who are overweight, blood levels of the peptide kisspeptin, the hormone leptin, and the protein RBP4 are higher than in women without PCOS, and these markers are linked to metabolic problems.
Grachev. Pasha P; Li. Xiao Feng XF; O'Byrne. Kevin K
The paper explains that stress can lower the levels of kisspeptin, a brain signal that helps control reproduction. When kisspeptin drops, the body releases fewer reproductive hormones, which can delay puberty and affect fertility. While the review doesn’t give new dosing tips, it highlights that managing stress might keep kisspeptin and reproductive health in better shape.
Giving a single IV dose of kisspeptin-10 makes the pituitary release more LH (and sometimes FSH), but the size of the response depends on how much estrogen or other sex hormones are already in the body. Women with low estrogen (post‑menopausal) or on progestogen‑only implants showed a clear rise, while those on combined estrogen‑progestin pills did not.
Stengel. Andreas A; Wang. Lixin L; Goebel-Stengel. Miriam M; Taché. Yvette Y
Injecting kisspeptin-10 directly into the brain of mice makes them eat less by spacing out meals, but giving it by a regular injection under the skin does nothing. The effect works best at a specific dose and lasts a few hours after a fast.
In rats, giving kisspeptin-10 (a short protein fragment) either through the bloodstream or directly into the brain briefly boosts the activity of oxytocin‑producing cells. This effect depends on nerve signals from the gut and only shows up in the brain during late pregnancy and nursing, suggesting kisspeptin may help trigger the extra oxytocin needed for birth and milk release.