Granulosa cells (GCs) synthesize estrogens needed for follicular growth. However, the effects of androgen on estrogen production in buffalo GCs remain unclear. In this study, the impacts of testosterone on estrogen synthesis in buffalo GCs were examined. The results showed that testosterone that was added to cell medium at a concentration of 10 mol/L and applied to GCs for 48 or 72 h enhanced the estrogen synthesis of buffalo GCs. This study provides a theoretical basis for further exploration of ovarian endocrine mechanism for steroidogenesis.
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http://dx.doi.org/10.1111/rda.14467 | DOI Listing |
Mikrochim Acta
December 2024
Key Laboratory for Analytical Science of Food Safety and Biology, MOE, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350108, China.
A triple signal amplified electrochemical aptasensor for the detection of bisphenol A (BPA) was developed for the first time based on gold nanoparticles (AuNPs), hemin/G-quadruplex DNAzyme, and exonuclease I (Exo I) assisted amplification strategies. The BPA aptamer (Apt) hybridized with the capture probe (CP) was fixed on the gold electrode (GE) to form the double-stranded DNA (dsDNA) structure. When BPA was present, the Apt was detached from the GE surface by specific recognition between the BPA and Apt, forming BPA-Apt complexes in solution.
View Article and Find Full Text PDFMicrobes Environ
December 2024
Faculty of Agriculture, University of Miyazaki.
We herein investigated the effects of salt (NaCl) stress on soybean nodulation by rhizobial strains. We specifically exami-ned: (1) the effects of NaCl on nodule maturity and positioning by inoculating three rhizobial strains (Bradyrhizobium diazoefficiens USDA110, Bradyrhizobium elkanii USDA31, and Sinorhizobium fredii USDA191) onto soybean variety CNS, (2) the effects of the NaCl treatment on isoflavones (daidzein and genistein) secretion by CNS, (3) the effects of the NaCl treatment on gene expression induced by daidzein and genistein in rhizobia, and (4) the effects of the NaCl treatment on rhizobial growth. The results obtained were as follows: (1) the NaCl treatment delayed nodule development and reduced nodulation on the primary root following the USDA110 inoculation, minimal sensitivity regarding nodule formation in the USDA 31 inoculation, and significantly increased the mature nodule number and nodules on the primary root following the USDA 191 inoculation.
View Article and Find Full Text PDFToxicology
December 2024
Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, 10043 Orbassano, Torino, Italy; Department of Neuroscience 'Rita Levi Montalcini', University of Torino, Via Cherasco 15, 10126 Torino, Italy. Electronic address:
Genistein (GEN) is a phytoestrogen with oestrogen-like activity found in many plants. Classified as an endocrine disruptor, GEN is potentially hazardous, particularly during developmental stages. It induces alterations in anxious behaviour, fertility, and energy metabolism, alongside modifications in specific brain circuits.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
College of Energy Environment and Safety Engineering, China Jiliang University, 258 Xueyuan Street, Hangzhou, Zhejiang 310018, China; Institute of Environmental and Health Sciences, China Jiliang University, 168 Xueyuan Street, Hangzhou, Zhejiang 310018, China. Electronic address:
Perfluorobutanoic acid (PFBA) is an emerging contaminant that was demonstrated to exhibit estrogen effects via action on classic estrogen receptors (ERs) in a low-activity manner. The purpose of the present study is to reveal the estrogen disruption effect and mechanism of PFBA via estrogen-related receptor γ (ERRγ) pathways. In vivo experiment indicated that PFBA accumulated in zebrafish ovary and caused ovarian injury, with disturbing sex hormone levels and interfering gene expression related to estrogen synthesis and follicle regulation.
View Article and Find Full Text PDFJ Prim Care Community Health
December 2024
Mayo Clinic, Rochester, MN, USA.
Menopause marks a significant transition in a woman's life, typically occurring between the ages of 46 and 55 years, characterized by the cessation of menstruation and a decline in ovarian function. This article provides a comprehensive overview of menopause, examining its physiological, psychological, and social dimensions. It explores the hormonal changes, including decreased levels of estrogen and progesterone, and how these changes contribute to common symptoms such as hot flashes, sleep disturbances, and mood fluctuations.
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