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Interfacial sorption of 17β-E2 on nano-microplastics: effects of particle size, functional groups and hydrochemical conditions.
Environ Res
January 2025
Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University, Shenyang, 110044, Liaoning, China. Electronic address:
Nano-microplastics and 17β-E2 have been frequently detected as emerging high-concern pollutants in aquatic systems, and their interaction at the solid/liquid interface has become a research focus in environmental studies. The interfacial sorption kinetics and equilibrium characteristics of 17β-estradiol (17β-E2) on nano-polystyrene (Nano-PS) with different particle sizes and organic functional group modifications were systematically investigated in aqueous environments in this study. The interfacial interaction mechanism between Nano-PS particles and 17β-E2 was elucidated by utilizing SEM, FTIR, XPS and BET techniques.
View Article and Find Full Text PDFEndocrine alterations in patients with pachydermoperiostosis.
J Clin Endocrinol Metab
January 2025
Centre for Endocrinology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.
Context: Pachydermoperiostosis (primary hypertrophic osteoarthropathy, PHO) usually due to biallelic loss-of-function variants in HPGD and SLCO2A1, has some features overlapping with acromegaly and often referred to endocrinologists. A detailed endocrine assessment is not available for these patients.
Objective: To assess the genetic and endocrine characteristics of PHO patients referred to endocrine centres with a possible diagnosis of acromegaly.
Growth Hormone Increase Induced by Oral Administration of Melatonin in a Young Woman With Sleep Disturbances.
JCEM Case Rep
February 2025
Clinica Medica 3, Department of Medicine-DIMED, University Hospital of Padova, Padova 35128, Italy.
Growth hormone (GH) secretion by the pituitary is regulated by stimulatory and inhibitory pathways such as growth hormone releasing hormone (GHRH) and somatostatin, respectively, being also modulated by different neurotransmitters acting at the hypothalamic/pituitary level. The pineal gland hormone melatonin regulates GH secretion in many mammals, including humans, although its role in modulating GH secretion has been debated. We describe the case of a young woman chronically taking melatonin for sleep disturbances, referring to her general practitioner for flushing that appeared just after starting melatonin intake.
View Article and Find Full Text PDFAssociation between the aromatase () gene variant rs10046 and cardiovascular risk in postmenopausal women.
Arch Endocrinol Metab
January 2025
Unidade de Endocrinologia Ginecológica Hospital de Clínicas de Porto Alegre Divisão de Endocrinologia Porto AlegreRS Brasil Unidade de Endocrinologia Ginecológica, Divisão de Endocrinologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil.
Objective: To assess the genotypic and allelic distribution of the rs10046 polymorphism in the gene and evaluate whether this aromatase gene variant is associated with cardiovascular risk in postmenopausal women.
Materials And Methods: This cross-sectional study analyzed repository-stored samples from 370 postmenopausal women aged 44-72 years. Clinical, metabolic, and hormonal data were collected.
The effect of single versus group culture on cumulus-oocyte complexes from early antral follicles.
J Assist Reprod Genet
January 2025
Department of Veterinary Medicine, University of Sassari, Via Vienna 2, Sassari, Italy.
Purpose: This study aimed to evaluate the effectiveness of single versus group culture strategies for cumulus-oocyte complexes (COCs) derived from early antral follicles (EAFs), with the goal of optimizing culture conditions to increase oocyte availability for assisted reproductive technologies.
Methods: COCs isolated from EAFs (350-450 µm) from sheep ovaries were cultured in TCM199 medium supplemented with 0.15 µg/mL Zn as zinc sulfate, 10 IU/mL FSH, 10 ng/mL estradiol, 50 ng/mL testosterone, 50 ng/mL progesterone, and 5 µM Cilostamide.
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