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http://dx.doi.org/10.1007/BF01135586 | DOI Listing |
Physiol Rev
January 2025
Department of Investigative Medicine, Imperial College London, Hammersmith Hospital, London, United Kingdom.
Kisspeptin and neurokinin B (NKB) play a key role in several physiological processes including in puberty, adult reproductive function including the menstrual cycle, as well as mediating the symptoms of menopause. Infundibular kisspeptin neurons, which co-express NKB, regulate the activity of gonadotropin releasing hormone (GnRH) neurons, and thus the physiological pulsatile secretion of GnRH from the hypothalamus. Outside of their hypothalamic reproductive roles, these peptides are implicated in several physiological functions including sexual behavior and attraction, placental function, and bone health.
View Article and Find Full Text PDFDrug Des Devel Ther
January 2025
People's Hospital of Zhengzhou University, Zhengzhou, Henan, 45003, People's Republic of China.
Background: Both intramural myomas and thin endometrium exert a detrimental influence on the outcomes of assisted reproductive technology (ART). The downregulation of gonadotropin releasing hormone agonists (GnRH-a) is regarded as an effective approach to reducing the size of intramural fibroids and enhancing endometrial receptivity. Consequently, we conducted this study to assess whether the GnRH-a combined with hormone replacement therapy (GnRH-a-HRT) can improve reproductive outcomes in frozen embryo transfer cycles for patients with a thin endometrium (≤7 mm) and intramural fibroids.
View Article and Find Full Text PDFAnim Biosci
January 2025
College of Veterinary Medicine, Kyungpook National University, Daegu, Korea.
Objective: Pregnancy in cattle after embryo transfer (ET) is influenced by several factors, including embryo quality. Therefore, preparing high-quality embryos with the greatest developmental potential is essential for achieving a successful pregnancy after ET. Meanwhile, blastocysts produced by in vitro fertilization (IVF) procedure have different developmental speed during in vitro culture (IVC) and they exhibited different competence in the establishment of pregnancy.
View Article and Find Full Text PDFBMC Pregnancy Childbirth
January 2025
Reproductive Obstetrics and Gynecology Center of the Second Affiliated Hospital, Nanjing Medical University, 210028, Nanjing, China.
Background: The safety and effectiveness of short-term insemination remain a subject of controversy. This study aims to investigate the impact of short-term insemination on both embryo quality and pregnancy outcomes and whether it is necessary to apply short-term insemination to all patients underwent in vitro fertilization (IVF).
Methods: A retrospective analysis was conducted on 3,496 patients from two centers over the period January 2016 to December 2022.
J Assist Reprod Genet
January 2025
Department of Assisted Reproductive Medicine, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, 2699nd West Gao Ke Road, Shanghai, 201204, China.
Purpose: Women with polycystic ovary syndrome (PCOS) show greater heterogeneity in ovarian responses during ovarian stimulation. We aimed to investigate the potential predicting factors among individualized basic parameters that affect poor or hyper ovarian responses in PCOS patients.
Methods: We retrospectively screened 2058 women with PCOS who underwent their first cycle of in vitro fertilization/intracytoplasmic sperm injection.
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