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Assessment of the impact of HIV infection on the hypothalamic-pituitary-ovarian axis and pubertal development among adolescent girls at a tertiary centre in Zimbabwe: a cross-sectional study.
BMC Endocr Disord
January 2025
Faculty of Medicine and Health Sciences, Department of Obstetrics and Gynaecology, University of Zimbabwe, P. O. Box A178, Avondale, Harare, Zimbabwe.
Background: Proper planning of reproductive health needs for HIV-infected adolescents requires a clear understanding of the effects of HIV infection on adolescents' pubertal development.
Objective: To assess the effects of HIV infection on the hypothalamic-pituitary-ovarian (HPO) axis, ovarian reserve and pubertal development in adolescent girls at a tertiary hospital in Zimbabwe.
Methods: This was a cross-sectional survey of HIV-infected adolescent girls aged 10-19 years, with available CD4 + count results at a tertiary hospital in Zimbabwe.
Nipecotic Acid Ameliorates Letrozole Induced Poly Cystic Ovarian Syndrome in Female Virgin Wistar Rats by Modulating Hypothalamic-Pituitary-Gonadal (HPG) Axis Regulated by GABA.
Reprod Sci
January 2025
Era College of Pharmacy, Era University, Lucknow, Uttar Pradesh, India.
PCOS is a common endocrine disorder in women particularly in their reproductive age. GABA has been implicated in the pathogenesis of PCOS through its central role in the hypothalamus. Hence, in this study we investigated the effect of Nipecotic acid (NPA) in Letrozole induced PCOS in female Wistar rats as NPA has been proven as a GABA uptake inhibitor.
View Article and Find Full Text PDFA weight of evidence review on the mode of action, adversity, and the human relevance of xylene's observed thyroid effects in rats.
Crit Rev Toxicol
January 2025
Product Stewardship, Science & Regulatory, Shell Global Solutions International B.V. The Hague, the Netherlands.
Xylene substances have wide industrial and consumer uses and are currently undergoing dossier and substance evaluation under Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) for further toxicological testing including consideration of an additional neurotoxicological testing cohort to an extended one-generation reproduction toxicity (EOGRT) study. New repeated dose study data on xylenes identify the thyroid as a potential target tissue, and therefore a weight of evidence review is provided to investigate whether or not xylene-mediated changes on the hypothalamus-pituitary-thyroid (HPT) axis are secondary to liver enzymatic induction and are of a magnitude that is relevant for neurological human health concerns. Multiple published studies confirm xylene-mediated increases in liver weight, hepatocellular hypertrophy, and liver enzymatic induction the oral or inhalation routes, including an increase in uridine 5'-diphospho-glucuronosyltransferase (UDP-GT) activity, the key step in thyroid hormone metabolism in rodents.
View Article and Find Full Text PDFGonadotropin-releasing hormone agonist protocols for pituitary suppression in assisted reproduction.
Cochrane Database Syst Rev
January 2025
Institute of Education in Healthcare and Medical Sciences, University of Aberdeen, Aberdeen, UK.
Background: Gonadotropin-releasing hormone agonists (GnRHa) are commonly used in assisted reproduction technology (ART) cycles to prevent a luteinising hormone (LH) surge during controlled ovarian hyperstimulation (COH) prior to planned oocyte retrieval, thus optimising the chances of live birth. We compared the benefits and risks of the different GnRHa protocols used.
Objectives: To evaluate the effectiveness and safety of different GnRHa protocols used as adjuncts to COH in women undergoing ART.
Prolactin Response to a Submaximal Dose of Ghrelin in Different Phases of the Normal Menstrual Cycle.
Medicina (Kaunas)
December 2024
Department of Obstetrics and Gynaecology, Faculty of Medicine, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece.
A similar secretory pattern of prolactin (PRL) and growth hormone (GH) during the menstrual cycle has been reported in response to a high dose of ghrelin in adult healthy women. The present study aimed to assess the pattern of PRL and GH secretions in response to a submaximal dose of ghrelin during different menstrual phases in adult healthy women. Eight female subjects with normal cyclicity were enrolled.
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