Wang. Xiaoli X; Bai. Yingyang Y; Tang. Chuanfeng C; Cao. Xinyuan X; Chang. Fei F; Chen. Ling L
The study shows that a common industrial chemical, PFOS, can mess up female mouse reproductive cycles by blocking estrogen‑driven activation of kisspeptin neurons in the brain. Giving the peptide kisspeptin‑10 to these mice fixed the hormone surge needed for ovulation, suggesting the peptide can bypass the PFOS‑induced block.
This study shows that the hormone‑releasing peptide kisspeptin‑10 only starts to boost LH and testosterone once boys reach the very end of puberty, and the response in adult men looks similar to that late‑puberty stage. Early in puberty there was no effect.
Trevisan. Camila M CM; Montagna. Erik E; de Oliveira. Renato R; Christofolini. Denise M DM; Barbosa....
Kisspeptin is a hormone that tells the brain to release GnRH, which then triggers the pituitary to release LH and FSH, the hormones that drive sex steroid production and gamete formation. It plays a key role in starting puberty, regulating fertility, and can be disrupted by genetic mutations that cause early or delayed puberty. Although research on using kisspeptin to treat infertility is still limited, scientists think it could become a useful marker or tool in assisted reproduction and ovarian stimulation protocols.
Comninos. Alexander N AN; Demetriou. Lysia L; Wall. Matthew B MB; Shah. Amar J AJ; Clarke. Sophie A...
A small, well‑controlled study found that giving healthy men kisspeptin changes how brain regions talk to each other at rest, especially in networks linked to sex and emotions. These brain changes were tied to stronger emotional responses to sexual cues, less sexual aversion, and better mood‑related brain connections.
Feng. Xuejiao X; Wang. Xiaoli X; Cao. Xinyuan X; Xia. Yankai Y; Zhou. Rong R; Chen. Ling L
A low, environmentally realistic dose of the chemical PFOS messes up hormone production in female mice, lowering estrogen and blocking the normal LH surge needed for ovulation. This happens because PFOS reduces a specific gene (StAR) that makes estrogen, by changing how its DNA is packaged. Giving the mice the peptide kisspeptin‑10 (or estrogen) fixes the LH surge, showing kisspeptin can jump‑start the reproductive hormone cascade when it’s suppressed.
Owens. L A LA; Abbara. A A; Lerner. A A; O'floinn. S S; Christopoulos. G G; Khanjani. S S; Islam. R...
A study of 48 IVF patients showed that giving kisspeptin‑54 to trigger egg maturation boosted the activity of many hormone‑making genes in ovarian cells, similar to or better than the usual hCG or GnRH‑agonist triggers, while not raising the markers linked to ovarian hyperstimulation syndrome (OHSS). Most participants had PCOS, and the benefit was seen when kisspeptin was given in the body, not when added to cells in a dish.
Zou. Peng P; Wang. Xiaogang X; Chen. Qing Q; Yang. Huan H; Zhou. Niya N; Sun. Lei L; Chen. Hongqiang...
The study found that men with higher levels of the hormone kisspeptin in their semen also had better sperm counts and motility, suggesting kisspeptin is linked to male fertility.
Abbara. Ali A; Jayasena. Channa N CN; Christopoulos. Georgios G; Narayanaswamy. Shakunthala S; Izzi-...
A clinical trial showed that a single injection of kisspeptin‑54 can safely trigger egg maturation in women undergoing IVF who are at high risk for a dangerous condition called ovarian hyperstimulation syndrome (OHSS). The drug worked in 95% of participants, gave the best egg‑retrieval numbers at the highest dose, and led to solid pregnancy and live‑birth rates without any cases of moderate or severe OHSS.
In female rats, long‑term exposure to the male hormone DHT cuts down the number of kisspeptin‑producing cells in a brain area that drives regular hormone pulses, which in turn blunts the natural LH surge needed for ovulation. Even giving extra kisspeptin‑10 or a GnRH drug didn’t revive LH release, showing that high androgen levels can block the whole pathway. This hints that in people with high androgen conditions (like PCOS), kisspeptin‑based tricks may not work unless the excess androgen is first reduced.
Scientists made a tiny version of the kisspeptin hormone (just five amino acids) that can still turn on the brain's reproductive hormone system. In male rats, a single dose boosted luteinizing hormone (LH) and, when given continuously, kept testosterone at a steady, moderate level instead of the big spikes or drops seen with longer kisspeptin peptides. This shows that very small, stable peptide drugs might be used to fine‑tune sex hormones.
Comninos. Alexander N AN; Wall. Matthew B MB; Demetriou. Lysia L; Shah. Amar J AJ; Clarke. Sophie A...
A small study gave kisspeptin to young men and found it lit up brain areas linked to sex and emotional bonding, made people feel more motivated and in a better mood, and lowered negative feelings. While it hints that kisspeptin could boost sexual desire and mood, the research doesn’t give dosing details or long‑term safety, so it’s more of an interesting clue than a ready‑to‑use hack.
Sánchez-Garrido. Miguel A MA; Ruiz-Pino. Francisco F; Manfredi-Lozano. María M; Leon. Silv...
In female rats, a high‑fat diet and early over‑nutrition make the animals heavier and mess up their metabolism. These same conditions also lower the hormones that control reproduction (LH and estradiol) and blunt the brain’s kisspeptin system, which normally helps trigger LH release. Removing the ovaries (a menopause model) makes the metabolic problems even worse, but it also wipes out the diet‑induced drop in LH and kisspeptin gene activity.
Irfan. S S; Ehmcke. J J; Wahab. F F; Shahab. M M; Schlatt. S S
In male rhesus monkeys, an IV dose of kisspeptin‑10 caused a spike in LH and a lasting rise in testosterone, and even boosted testosterone when the normal GnRH pathway was blocked, hinting that kisspeptin can act directly on the testes.
In male rhesus monkeys, a single dose of kisspeptin-10 normally spikes testosterone, but fasting for 18‑24 hours blunts both the size and speed of that spike, while a 12‑hour fast doesn’t have this effect. This suggests longer fasts can dampen the body’s ability to raise testosterone in response to kisspeptin or similar signals.
Jayasena. Channa N CN; Abbara. Ali A; Veldhuis. Johannes D JD; Comninos. Alexander N AN; Ratnasabapa...
Giving kisspeptin-54 through a steady IV drip temporarily boosts the rhythm and amount of the hormone LH in women who have lost periods because their brain isn’t signaling the reproductive system properly. The effect depends on the dose, with each woman responding best at a slightly different level, and the boost goes away after the infusion stops.
Narayanaswamy. Shakunthala S; Prague. Julia K JK; Jayasena. Channa N CN; Papadopoulou. Deborah A DA;...
In a tiny study of healthy men, giving the peptide kisspeptin caused a strong rise in the hormone LH, which drives testosterone production. Adding the opioid blocker naltrexone made the LH pulses even bigger, while the other peptide neurokinin B did nothing on its own and actually dampened kisspeptin's effect when combined.
Giving kisspeptin-54 through a tiny pump under the skin can make women's bodies release more LH and FSH hormones, which are important for fertility. The boost is bigger when a woman's natural estradiol (a form of estrogen) level is already high, especially in the late follicular phase of the menstrual cycle.
Jayasena. C N CN; Comninos. A N AN; Veldhuis. J D JD; Misra. S S; Abbara. A A; Izzi-Engbeaya. C C; D...
A single shot of kisspeptin-54 under the skin briefly raises the number of luteinizing hormone (LH) pulses in healthy women, especially at doses of 0.30 and 0.60 nmol per kg, but it doesn’t significantly increase the total LH released. The boost lasts only a few hours and the study was tiny (six participants).
Caraty. A A; Lomet. D D; Sébert. M E ME; Guillaume. D D; Beltramo. M M; Evans. N P NP
The study shows that giving kisspeptin‑10 as short bursts (pulses) triggers sharp spikes of the reproductive hormone GnRH and LH, while a steady, continuous infusion raises GnRH levels more slowly and without clear pulses. The way you deliver kisspeptin changes how the brain’s hormone‑releasing neurons fire, and the peptide doesn’t easily get into the brain from the bloodstream.
The study shows that short bursts of kisspeptin can trigger a lasting release of reproductive hormones, while constant exposure makes the body become less responsive. Men and women react differently, especially across the menstrual cycle, and the way kisspeptin is given (single dose vs continuous) can either boost or dampen hormone activity. This info helps people think about how to use kisspeptin if they want to tweak hormones for health or performance.