A synthetic decapeptide analog of GnRH that stimulates the pituitary gland to release FSH and LH, aiding in reproductive hormone regulation and fertility treatments.
Zheng. Ye Y; Liu. Wenyu W; Su. Min M; Zhu. Shiheng S; Li. Xiufang X; Xie. Hongqiang H; Lyu. Chunzi C...
In women aged 21‑37 undergoing IVF with genetic testing of embryos, using a short GnRH‑agonist stimulation plan led to more embryos with chromosome problems than the standard long GnRH‑agonist plan, especially in younger women with good ovarian reserve. The antagonist plan performed about the same as the long plan.
Topaloğlu. A Kemal AK; Kotan. Leman Damla LD
Idiopathic hypogonadotropic hypogonadism (IHH) is a condition where the brain doesn't release enough GnRH, leading to delayed puberty and infertility. Over 60 genes can cause it, and many people have mutations in more than one gene. Recent research uncovered that a group of brain cells called KNDy neurons act as the GnRH pulse generator, and a new drug that blocks neurokinin B receptors (fezolinetant) has been approved for menopause symptoms.
Keating. Michelle K MK; Jones. Keli B KB; Hansell. Maggie W MW
Uterine fibroids are non‑cancerous growths that many women have, often without symptoms. When they cause problems like heavy bleeding, pain, or fertility issues, doctors first examine and image the uterus, then choose treatments based on size, location, and whether the woman wants to keep her uterus. Options include birth‑control pills, a hormone‑releasing IUD, anti‑inflammatory drugs, tranexamic acid, vitamin D supplementation, hormonal drugs that block or stimulate the GnRH pathway (like gonadorelin‑based agents), and various surgeries or radiologic procedures.
In female rats, the start of puberty depends on a rise in kisspeptin and dynorphin signals inside the brain when estrogen feedback is low and the animal has enough energy. Low estrogen cuts down kisspeptin cells before puberty, but once estrogen drops and the animal isn’t starving, kisspeptin and dynorphin go up and trigger the hormonal cascade that leads to puberty. Blocking kisspeptin in the brain delays this process, showing how crucial the kisspeptin signal is.
A study of 575 women undergoing IVF compared two common hormone regimens—GnRH antagonist and long‑acting GnRH agonist. After looking at pregnancy rates, miscarriage rates, and live‑birth rates, the researchers found no meaningful differences between the two approaches once they accounted for other factors.
In female rats, daily caffeine (10‑40 mg/kg) for three weeks lowered kidney and liver weight, reduced white blood cells, dropped gonadotropin‑releasing hormone (GnRH) and progesterone, raised inflammation marker TNF‑α, and messed up the estrous cycle, but it didn’t change blood lipids. All of these changes went back to normal after a three‑week caffeine break.
Zarzecka. Barbara B; Dobrzyn. Kamil K; Kiezun. Marta M; Kopij. Grzegorz G; Dawid. Monika M; Rak. Agn...
In pigs, the hormone irisin and its receptor are found in the pituitary gland and their levels change during the estrous cycle and early pregnancy. Hormones that control reproduction (GnRH, LH, FSH) and insulin can lower the amount of irisin released from pituitary cells, especially during the luteal phase. This suggests a two‑way link between metabolism (irisin) and reproductive signaling.
Pinborg. Anja A; Sopa. Negjyp N; Ekerhovd. Erling E; Iliadis. Stavros I SI; Kaspersen. June J; Gravo...
A real‑world study of 199 women using the hormone drug follitropin delta, which is dosed based on body weight and AMH levels, showed that most patients followed the dosing algorithm, got a good number of eggs, and more than half achieved ongoing pregnancies, with only a small chance of mild ovarian hyperstimulation. Most users liked the pre‑filled pen.
This study measured how quickly a synthetic hormone called buserelin (used to trigger ovulation in pigs) shows up in the blood and how fast it disappears. After an injection, the drug peaked in the bloodstream within about 18 minutes and was cleared from the body in roughly half an hour.
Zang. Shaolian S; Ouyang. Yang Y; Li. Pin P; Yin. Xiaoqin X
The study shows that a brain enzyme called FTO removes a chemical tag from the BDNF gene, boosting BDNF levels. Higher BDNF then activates a signaling chain (PI3K/Akt) that makes the hormone GnRH (gonadorelin) rise, which speeds up puberty in rats and girls. Changing FTO or BDNF levels can speed up or delay puberty, but the work is about development, not adult health.
Feeding young male rats a high‑fat diet made them fatter and caused them to hit puberty earlier. The extra fat also boosted hormones that control reproduction and raised levels of a brain peptide called phoenixin (produced from the Smim20 gene). The study suggests that obesity can speed up puberty in males, possibly through phoenixin, but it was done in rats and does not give a clear way to use this information in humans.
The study tested a new way to give a fish hormone using tiny chitosan particles, which kept the hormone stable and let researchers use lower doses while still boosting sperm production in male fish. Adding a drug called domperidone made the effect even stronger, and the half‑dose worked almost as well as the standard commercial hormone.
A study of 91 patients with a rare muscle disease (spinal and bulbar muscular atrophy) found that taking leuprorelin, a hormone-like drug, slowed the loss of function over time compared to before they started the drug.
Noh. Eu-Seon ES; Jin. Hye Young HY; Hwang. Il Tae IT
In a study of boys with early puberty, the anti‑aging protein α‑Klotho was not higher than in normal kids, but it tracked closely with testosterone levels. When the boys were treated with a GnRH‑agonist drug that lowered testosterone, α‑Klotho only dropped a little and not in a meaningful way.
In sheep, giving the brain chemical anandamide while they were sick with inflammation boosted the brain's production of the hormone GnRH, lowered stress hormone cortisol, and reduced inflammation signals, but it didn't bring back the downstream hormone LH that was suppressed by the illness.
Scientists discovered that a circular RNA called circ‑ptpn4 reacts to the hormone GnRH and pulls away a tiny regulator (let‑7b‑5p), which lets another protein (ELK1) increase and boost the production of the reproductive hormone FSH. This adds a new layer to how the brain tells the pituitary to make FSH, but it doesn’t change how we currently use GnRH‑based peptides.
Islam. Md Monirul MM; Talukder. Mohammad Rafiqul Islam MRI; Naher. Nazmun N; Jha. Pankaj Kumar PK; B...
In a field study with Bangladeshi sheep, researchers froze top-quality embryos and transferred them directly into recipient ewes. Some recipients got a small dose of gonadorelin (a GnRH hormone) right after transfer. Pregnancy rates were a bit higher with gonadorelin (62.5% vs 56.6%), and lambing rates were similar. Overall, the technique worked well for sheep breeding, but the hormone’s benefit was modest.
Vandermolen. Brooke B; Reindorf. Maxine M; McMurray. Rebecca R; Aref-Adib. Mehrnoosh M; Odejinmi. Fu...
A small case series looked at women who took a drug combo (relugolix, estradiol, norethisterone) before having fibroid surgery. The pre‑treated group lost less blood and the surgeons reported cleaner tissue planes, but surgery time and hospital stay were about the same as those who didn’t take the drugs.
In kids with a rare genetic cause of early puberty, a drug that mimics the hormone that starts puberty (GnRHa) was given for at least two years. It shrank the uterus and ovaries, lowered the sex‑hormone signals (LH and FSH), slowed bone‑age advancement, and even lowered body‑mass‑index a bit, without obvious side effects.
A study looked at women with a uterine condition called adenomyosis and found that taking a hormone pill (dienogest) together with a GnRH‑agonist drug (like gonadorelin) reduced pain, improved blood markers and shrank the uterus more than using either drug alone, without extra side effects. The research also showed that women with adenomyosis have higher chances of pregnancy complications such as miscarriage and preterm birth.