Human chorionic gonadotropin (hCG) is crucial for successful pregnancy. Its many functions include angiogenesis and immune regulation. Despite years of research, the etiology of preeclampsia remains unknown. Marked by insufficient trophoblast invasion and poor spiral artery remodeling, preeclampsia has also been linked to immune dysregulation. Here we discuss the roles of hCG in the context of endovascular cross-talk between trophoblasts and endothelial cells and immune tolerance. We propose that functional and glycosylation modifications of hCG may contribute to the pathogenesis of preeclampsia.
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http://dx.doi.org/10.1016/j.placenta.2011.01.009 | DOI Listing |
World J Surg Oncol
January 2025
Department of Colorectal Surgery, Dingli Clinical College, Wenzhou Medical University (Wenzhou Central Hospital), 252 Baili East Road, Wenzhou, Zhejiang Province, 32500, China.
Background: An association between testicular cancer and Down syndrome has been reported by several studies. Down syndrome with cryptorchidism and retroperitoneal mixed germ cell tumours is rare, and yolk sac tumours are often considered secondary components of mixed germ cell tumours. Herein, we present a rare case of retroperitoneal mixed germ cell tumour with cryptorchidism accompanied by yolk sac tumour and seminoma in a patient with Down syndrome, along with its imaging features.
View Article and Find Full Text PDFReprod 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 PDFAndrology
January 2025
Department of Digestion, Metabolism and Reproduction, Institute of Reproductive and Developmental Biology, Hammersmith Campus, Imperial College London, London, UK.
Luteinizing hormone (LH), along with its agonist choriongonadotropin (hCG) in humans, is the key hormone responsible for the tropic regulation of the gonadal function. LH and hCG act through their cognate receptor, the luteinizing hormone/choriongonadotropin receptor (LHCGR; more appropriately LHR in rodents lacking CG), located in the testis in Leydig cells and in the ovary in theca, luteal, and luteinizing granulosa cells. Low levels in LHCGR are also expressed in numerous extragonadal sites.
View Article and Find Full Text PDFAsian J Androl
January 2025
Global Andrology Forum, 130 West Juniper Lane, Moreland Hills, OH 44022, USA.
Azoospermia, defined as the absence of sperm in the ejaculate, is a well-documented consequence of exogenous testosterone (ET) and anabolic-androgenic steroid (AAS) use. These agents suppress the hypothalamic-pituitary-gonadal (HPG) axis, leading to reduced intratesticular testosterone levels and impaired spermatogenesis. This review examines the pathophysiological mechanisms underlying azoospermia and outlines therapeutic strategies for recovery.
View Article and Find Full Text PDFReprod Sci
January 2025
Rock Creek Medical Office, Kaiser Permanente Colorado, 280 Exempla Circle, Lafayette, Denver, CO, 80516, USA.
The primary objective of this study was to review a methotrexate 90-mg fixed-dose protocol for treatment of ectopic pregnancy, and to evaluate if any characteristics were associated with ectopic pregnancy treatment failure. This was a single arm retrospective cohort study conducted at Kaiser Permanente Colorado. The primary outcome was to describe rates of ectopic pregnancy treatment failure among patients who received fixed dose(s) of methotrexate for ectopic pregnancy between January 1, 2007 and August 31, 2017.
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