Gonadotropin-releasing hormone (GnRH) is central to the control of the entire hypothalamic-pituitary-gonadal axis. Manipulation of GnRH, in turn, regulates pituitary response and ovarian hormone production. Gonadotropin-releasing hormone analogues have revolutionized assisted reproductive technology and gynecologic practice. The recent advent of oral GnRH antagonists with an inherent rapid onset of action continues to transform the treatment options available for several common gynecologic conditions, including endometriosis and fibroids. Herein, we review neuroendocrine GnRH activity and discuss modulation of the reproductive axis by GnRH analogues for diverse clinical applications.
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http://dx.doi.org/10.1016/j.xfre.2023.01.008 | DOI Listing |
J Pediatr Endocrinol Metab
January 2025
Department of Paediatrics, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Objectives: Kisspeptin plays a major role in the onset of puberty by stimulating the gonadotropin-releasing hormone (GnRH) neurons. The aim of this study was to investigate whether GnRH inhibits kisspeptin secretion via a negative feedback mechanism and potential associations between kisspeptin levels and other hormones of importance for pubertal onset.
Methods: Thirteen girls with suspected central precocious puberty underwent a GnRH stimulation test twice in a randomized, placebo-controlled manner.
Acta Endocrinol (Buchar)
January 2025
Universidad Autónoma de Aguascalientes, Centro de Ciencias Básicas, Department of Physiology and Pharmacology.
Context: Studies indicate a decrease in spatial memory across species as they age. Moreover, consistent administration of Gonadotropin-releasing hormone (GnRH) improves learning abilities in older rats that have undergone gonadectomy.
Objective: The aim of this study was to investigate the effects of the GnRH agonist, leuprolide acetate (LA) on spatial memory in aged intact male rats and the expression of proteins associated with hippocampal plasticity.
Reprod Biol Endocrinol
January 2025
Infertility and IVF Unit, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center (Tel Hashomer), Ramat Gan, 52621, Israel.
As part of a conventional controlled ovarian hyperstimulation (COH) regimen, final follicular maturation is usually triggered by a single bolus dose of human chorionic gonadotropin (hCG). COH, which combines GnRH antagonist co-treatment with GnRH agonist(GnRHa) trigger, is often used in attempts to eliminate severe early ovarian hyperstimulation syndrome and to improve oocyte/embryo yield and quality. Recently, the combination of GnRHa, with hCG trigger has also been implemented into clinical practice.
View Article and Find Full Text PDFMol Cell Endocrinol
January 2025
Department of Molecular Genetics, Function and Therapy, The Cyprus Institute of Neurology and Genetics, Nicosia, Cyprus. Electronic address:
Background And Aims: Puberty is a crucial developmental stage marked by the transition from childhood to adulthood, organized by complex hormonal signaling within the neuroendocrine system. The hypothalamus, a central region in this system, regulates pubertal functions through the hypothalamic-pituitary-gonadal (HPG) axis. Gonadotropin-releasing hormone (GnRH) neurons, essential in puberty control, release GnRH in a pulsatile manner, initiating the production of sex hormones.
View Article and Find Full Text PDFJ Pediatr Endocrinol Metab
January 2025
117977 The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China.
Objectives: The gonadotropin-releasing hormone (GnRH) provocation test is crucial for diagnosing central precocious puberty (CPP). However, due to its invasion and high cost, it is essential to find a simpler biomarker. This study aimed to investigate the feasibility of fasting insulin (FINS) and insulin-like growth factor-1 (IGF-1) as potential biomarkers for diagnosing girls with CPP and to analyze their effects on puberty development.
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