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GnRH pulse generator activity in mouse models of polycystic ovary syndrome.
Elife
January 2025
Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom.
One in ten women in their reproductive age suffer from polycystic ovary syndrome (PCOS) that, alongside subfertility and hyperandrogenism, typically presents with increased luteinizing hormone (LH) pulsatility. As such, it is suspected that the arcuate kisspeptin (ARN) neurons that represent the GnRH pulse generator are dysfunctional in PCOS. We used here in vivo GCaMP fiber photometry and other approaches to examine the behavior of the GnRH pulse generator in two mouse models of PCOS.
View Article and Find Full Text PDFRu(II)-Catalyzed -Vinylation of Benzoic Acids in Water.
J Org Chem
January 2025
Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur 302017, Rajasthan, India.
Herein, we report an efficient [Ru(η-CH)Cl] catalyzed oxidative C-H alkenylation of benzoic acid in the green solvent water. A regioselective olefination of benzoic acid with functionalized alkenes like styrene and acrylate was established at a very mild condition of 60 °C temperature and in an aqueous medium. In contrast to the cyclization of the carboxylic group, a selective -olefination product of benzoic acid was observed with the acrylate.
View Article and Find Full Text PDFDearomative Addition-Hydrogen Autotransfer for Branch-Selective -Heteroaryl C-H Functionalization via Ruthenium-Catalyzed C-C Couplings of Diene Pronucleophiles.
J Am Chem Soc
January 2025
Department of Chemistry, University of Texas at Austin, Austin 78712, Texas, United States.
A novel mechanism for -heteroaryl C-H functionalization via dearomative addition-hydrogen autotransfer is described. Upon exposure to the catalyst derived from RuHCl(CO)(PPh) and Xantphos, dienes - suffer hydroruthenation to form allylruthenium nucleophiles that engage in -heteroaryl addition-β-hydride elimination to furnish branched products of C-C coupling - and -. Oxidative cleavage of isoprene adducts , , , and followed by ruthenium-catalyzed dynamic kinetic asymmetric ketone reduction provides enantiomerically enriched -heteroarylethyl alcohols - and, therefrom, -heteroarylethyl amines -.
View Article and Find Full Text PDFIndividualized Treatment of Multiple Magnetic Foreign Body Ingestion in Children.
J Laparoendosc Adv Surg Tech A
January 2025
Department of General Surgery, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China.
The incidence of multiple magnetic foreign body (MMFB) ingestion in children is rising, which poses a serious risk for gastrointestinal tract injury. In the current study, the clinical characteristics were analyzed to enhance awareness among parents and caregivers, treatment experiences were summarized and discussed, and optimal treatment plans were identified. A retrospective analysis was performed on 130 pediatric patients with MMFB ingestion at the Children's Hospital Affiliated with Zhejiang University School of Medicine, between June 2016 and June 2023.
View Article and Find Full Text PDFMicroelectronic Structure and Doping Nonuniformity of Phosphorus-Doped CdSeTe Solar Cells.
ACS Appl Mater Interfaces
January 2025
National Renewable Energy Laboratory, Golden, Colorado 80401, United States.
Optimizing group-V doping and Se alloying are two main focuses for advancing CdTe photovoltaic technology. We report on nanometer-scale characterizations of microelectronic structures of phosphorus (P)-doped CdSeTe devices using a combination of two atomic force microscopy-based techniques, namely, Kelvin probe force microscopy (KPFM) and scanning spreading resistance microscopy (SSRM). KPFM on device cross-section images distribution of the potential drop across the device.
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