Description
Product Overview: Human Chorionic Gonadotropin (HCG)
Human Chorionic Gonadotropin (HCG) is a heterodimeric glycoprotein hormone composed of an alpha subunit (identical to LH, FSH, and TSH) and a unique beta subunit that dictates its specific biological activity. As a potent agonist of the Luteinizing Hormone / Choriogonadotropin Receptor (LHCGR), HCG mimics the signal of endogenous Luteinizing Hormone (LH). In research models, HCG is widely utilized to stimulate Leydig cell steroidogenesis, maintain intratesticular testosterone levels, support follicular maturation, and investigate neuroendocrine reproductive axes.
Primary Research Applications & Reasons for Study
- Leydig Cell Steroidogenesis: Activating testicular LHCGR pathways to stimulate cholesterol conversion to pregnenolone, driving endogenous testosterone production in testicular tissue models.
- Hypogonadotropic Axis Restoration: Investigating the preservation of intratesticular testosterone (ITT) and Leydig cell architecture during suppressed gonadotropin secretion.
- Ovarian Follicular Maturation: Mimicking the pre-ovulatory LH surge in female reproductive models to induce terminal oocyte maturation and luteinization.
- Neurosteroid & Trophic Signaling: Studying secondary LHCGR activation in central nervous system and peripheral tissues to evaluate neuroprotective and angiogenic responses.
Expected Research Results & Timeline Metrics
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Phase 1 / Hours 2–24
Acute Steroidogenic Surge: High-affinity binding to LHCGR triggers an immediate upregulation of StAR protein expression and a rapid elevation in serum testosterone levels. -
Phase 2 / Days 2–7
Secondary Steroid Peak & Tissue Retention: Sustained circulatory half-life supports a secondary, prolonged testosterone/estradiol synthesis peak and elevated intratesticular androgen levels. -
Phase 3 / Weeks 2–4+
Gonadal Preservation & Spermatogenesis Support: Maintenance of testicular mass, prevention of Leydig cell atrophy, and stabilized germ cell maturation parameters in long-term endocrine assays.
Key Research Benefits
- Extended Half-Life Over Native LH: Glycosylated structure offers significantly higher circulatory stability and prolonged receptor binding compared to pituitary LH.
- Direct Leydig Cell Stimulant: Bypasses hypothalamic and pituitary loops to directly induce endogenous gonadal hormone production.
- Essential Endocrine Standard: Critical reference compound for hypogonadism, fertility restoration, and reproductive toxicological studies.
- Preserves Intratesticular Microenvironment: Maintains high local androgen concentrations essential for supporting healthy spermatogenic pathways.
THIS PRODUCT IS INTENDED SOLELY FOR IN VITRO LABORATORY RESEARCH AND EXPERIMENTAL PURPOSES. It is strictly prohibited for human consumption, clinical trials, therapeutic administration, cosmetic use, or veterinary application. This product is not an FDA-approved drug, medical food, or dietary supplement. It is not intended to diagnose, treat, cure, or prevent any disease, illness, or medical condition. Any handling, reconstitution, or experimentation involving this chemical compound must be conducted strictly by qualified, trained laboratory professionals utilizing appropriate containment and personal protective equipment in accordance with scientific biosafety standards. Buyers and users assume full liability for compliance with local, state, and federal laws regarding the handling and possession of research compounds.