{"title":"Fertility","description":"\u003cp\u003eOur fertility research collection features peptides studied for reproductive hormone regulation and fertility pathways. Research-grade compounds with ≥98% HPLC purity.\u003c\/p\u003e\n\n\u003ch3\u003eFertility Research Peptides\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKisspeptin\u003c\/strong\u003e - Master regulator of GnRH release studied for puberty onset, ovulation, and reproductive function\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eResearch Focus\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGnRH pulsatility and amplitude\u003c\/li\u003e\n\u003cli\u003eLH and FSH secretion patterns\u003c\/li\u003e\n\u003cli\u003eOvulation induction and fertility\u003c\/li\u003e\n\u003cli\u003eHypothalamic-pituitary-gonadal axis regulation\u003c\/li\u003e\n\u003cli\u003eReproductive hormone restoration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality Assurance:\u003c\/strong\u003e Peptides BioLab fertility peptides are manufactured for research use only, tested to ≥98% purity (HPLC), and include batch-specific Certificate of Analysis. Not intended for human consumption.\u003c\/p\u003e","products":[{"product_id":"kisspeptin","title":"Kisspeptin","description":"\u003cdiv class=\"pb-product-desc\"\u003e\n\u003ch2\u003eKisspeptin-10 — KISS1R Agonist for Reproductive Neuroendocrinology Research\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eKisspeptin-10\u003c\/strong\u003e is the C-terminal decapeptide of the KISS1 gene product, a critical HPG axis regulator. Identified as GPR54 ligand by de Roux et al. and Seminara et al. (2003, \u003cem\u003eNEJM\u003c\/em\u003e). Loss-of-function KISS1R mutations cause hypogonadotropic hypogonadism.\u003c\/p\u003e\n\u003ch3\u003eMechanism of Action\u003c\/h3\u003e\n\u003cp\u003eKisspeptin-10 binds KISS1R (GPR54), a Gq\/11 receptor on GnRH neurons, triggering PLC-calcium mobilization and GnRH pulsatile secretion → LH and FSH release. Arcuate KNDy neurons generate the GnRH pulse essential for gonadotropin secretion.\u003c\/p\u003e\n\u003ch3\u003eKey Research Areas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGnRH Pulse Generator:\u003c\/strong\u003e Critical component of the GnRH pulse generator via arcuate KNDy neurons (kisspeptin + neurokinin B + dynorphin).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuberty Research:\u003c\/strong\u003e Kisspeptin signaling increases dramatically at puberty — study neuroendocrine mechanisms of pubertal GnRH activation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFertility and Ovulation:\u003c\/strong\u003e Triggers LH surges comparable to ovulation requirements, studying positive estrogen feedback on HPG axis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetabolic-Reproductive Integration:\u003c\/strong\u003e Kisspeptin neurons receive leptin, insulin, and glucose inputs — nexus for energy-reproductive competence research.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Researchers Choose Peptides BioLab\u003c\/h3\u003e\n\u003cp\u003eEvery batch of \u003cstrong\u003eKisspeptin-10\u003c\/strong\u003e supplied by Peptides BioLab undergoes rigorous HPLC and mass spectrometry analysis, ensuring ≥98% purity verified by an independent Certificate of Analysis (CoA). Our \u003ca href=\"\/products\/kisspeptin\"\u003eKisspeptin-10\u003c\/a\u003e is supplied as a lyophilized powder for maximum stability and shelf life, shipped worldwide from our state-of-the-art facilities in temperature-controlled packaging.\u003c\/p\u003e\n\u003ch3\u003eRelated Research Peptides\u003c\/h3\u003e\n\u003cp\u003eResearchers studying related pathways may also find these compounds relevant: \u003ca href=\"\/products\/pt-141\"\u003ePT-141\u003c\/a\u003e, \u003ca href=\"\/products\/vip\"\u003eVIP\u003c\/a\u003e, and \u003ca href=\"\/products\/melanotan-ii\"\u003eMelanotan II\u003c\/a\u003e. Browse our \u003ca href=\"\/collections\/recovery\"\u003eEndocrine Research\u003c\/a\u003e collection.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFor research purposes only — Not for human consumption. All products are intended solely for in-vitro research and laboratory use.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Peptides BioLab","offers":[{"title":"Default Title","offer_id":60995752886602,"sku":"PBL-KISSPEPTIN-6G","price":59.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/9429\/6906\/files\/peptides-biolab-kisspeptin-reproductive-peptide-5mg-research-grade.webp?v=1773935018"},{"product_id":"gonadorelin","title":"Gonadorelin","description":"\u003cdiv class=\"pb-product-desc\"\u003e\n\u003ch2\u003eGonadorelin — Gonadotropin-Releasing Hormone for Reproductive Endocrine Research\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eGonadorelin\u003c\/strong\u003e (GnRH, LHRH) is a synthetic decapeptide identical to endogenous gonadotropin-releasing hormone, the master hypothalamic regulator of the reproductive axis. First sequenced by Nobel laureates Andrew Schally and Roger Guillemin in 1971, gonadorelin (pyro-Glu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH₂) has served as the cornerstone research tool for studying hypothalamic-pituitary-gonadal (HPG) axis physiology for over five decades. Its well-characterized pharmacology and dual agonist\/desensitization biology make it indispensable for researchers investigating reproductive endocrinology, fertility, and neuroendocrine signaling.\u003c\/p\u003e\n\n\u003ch3\u003eMechanism of Action\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eGonadorelin\u003c\/strong\u003e binds the GnRH receptor (GnRHR) on anterior pituitary gonadotroph cells, a Gq\/11-coupled GPCR that activates phospholipase C, generating IP3 and diacylglycerol second messengers. This triggers calcium mobilization from endoplasmic reticulum stores and PKC activation, resulting in exocytosis of LH and FSH from secretory granules. Critically, the biological response to GnRH is frequency-dependent: pulsatile administration (every 60-120 minutes) sustains gonadotropin secretion, while continuous exposure causes GnRHR internalization, desensitization, and paradoxical gonadotropin suppression—a phenomenon exploited in both research and clinical contexts.\u003c\/p\u003e\n\n\u003ch3\u003eKey Research Areas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPG Axis Assessment:\u003c\/strong\u003e \u003cstrong\u003eGonadorelin\u003c\/strong\u003e remains the standard provocative agent for pituitary gonadotroph function testing, enabling researchers to differentiate between hypothalamic and pituitary causes of hypogonadism by measuring LH\/FSH release kinetics following bolus administration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulsatile vs. Continuous Signaling:\u003c\/strong\u003e The frequency-dependent response to GnRH is a paradigm in receptor biology. Researchers use gonadorelin in pulsatile delivery systems to study differential activation of LH-β versus FSH-β gene transcription, mediated by distinct MAPK signaling dynamics (ERK1\/2 oscillation patterns).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFertility Research:\u003c\/strong\u003e Studies have demonstrated that pulsatile gonadorelin administration restores ovulatory cycles in hypothalamic amenorrhea models and normalizes spermatogenic function in hypogonadotropic animal models, maintaining physiological gonadotropin patterns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReceptor Desensitization Biology:\u003c\/strong\u003e Continuous gonadorelin exposure provides a model system for studying GPCR downregulation, β-arrestin-mediated internalization, and receptor recycling dynamics relevant to both reproductive and broader receptor pharmacology research.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDosage per vial:\u003c\/strong\u003e 2mg lyophilized powder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity:\u003c\/strong\u003e ≥98% (HPLC verified)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSequence:\u003c\/strong\u003e pyro-Glu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH₂\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular Weight:\u003c\/strong\u003e 1,182.31 Da\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e -20°C, protected from light\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Researchers Choose Peptides BioLab\u003c\/h3\u003e\n\u003cp\u003eEvery batch of \u003cstrong\u003eGonadorelin\u003c\/strong\u003e supplied by Peptides BioLab undergoes rigorous HPLC and mass spectrometry analysis, ensuring ≥98% purity verified by an independent Certificate of Analysis (CoA). Our product is supplied as a lyophilized powder for maximum stability, shipped worldwide in temperature-controlled packaging.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Research Peptides\u003c\/h3\u003e\n\u003cp\u003eResearchers studying reproductive endocrinology may also find these compounds relevant: \u003ca href=\"\/products\/kisspeptin\"\u003eKisspeptin\u003c\/a\u003e, \u003ca href=\"\/products\/pt-141\"\u003ePT-141\u003c\/a\u003e, and \u003ca href=\"\/products\/testagen\"\u003eTestagen\u003c\/a\u003e. For a complete overview, browse our \u003ca href=\"\/collections\/fertility\"\u003eFertility Research\u003c\/a\u003e collection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eFor research purposes only — Not for human consumption. All products are intended solely for in-vitro research and laboratory use.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Peptides BioLab","offers":[{"title":"Default Title","offer_id":61420787368266,"sku":"PBL-GONADORELIN-2MG","price":29.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/9429\/6906\/files\/peptides-biolab-gonadorelin-peptide-2mg-research-grade.webp?v=1774393602"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/9429\/6906\/collections\/peptides-biolab-kisspeptin-reproductive-peptide-5mg-research-grade.webp?v=1774382732","url":"https:\/\/peptides-biolab.com\/collections\/fertility.oembed","provider":"Peptides BioLab","version":"1.0","type":"link"}