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A mutation in LXRα uncovers a role for cholesterol sensing in limiting metabolic dysfunction-associated steatohepatitis.
Nat Commun
January 2025
Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA, USA.
Liver x receptor alpha (LXRα) functions as an intracellular cholesterol sensor that regulates lipid metabolism at the transcriptional level in response to the direct binding of cholesterol derivatives. We have generated mice with a mutation in LXRα that reduces activity in response to endogenous cholesterol derived LXR ligands while still allowing transcriptional activation by synthetic agonists. The mutant LXRα functions as a dominant negative that shuts down cholesterol sensing.
View Article and Find Full Text PDFInvestigating the role and mechanisms of bisphenol compounds in premature ovarian insufficiency using computational biology and bioinformatics.
Ecotoxicol Environ Saf
January 2025
Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China; National Clinical Research Center for Obstetrics and Gynecology (Peking University Third Hospital), Beijing, China. Electronic address:
Premature Ovarian Insufficiency refers to the premature decline in ovarian function before the age of 40, resulting in menstrual irregularities or complete cessation of menstruation, and affecting fertility. Widely used bisphenol compounds may have potential health effects, including premature ovarian insufficiency (POI). This study employs computational biology and bioinformatics to investigate the effects of bisphenols (BPs) on POI.
View Article and Find Full Text PDFLipid Lowering Therapy Utilization and Lipid Goal Attainment in Women.
Curr Atheroscler Rep
January 2025
Department of Internal Medicine, Erasmus MC Cardiovascular Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands.
Purpose Of Review: The purpose of this review is to provide an overview of the current status of lipid-lowering therapy utilization and lipid goal attainment in women. We focus on lipid-lowering therapy in individuals with and without established atherosclerotic cardiovascular disease, as well as familial hypercholesterolemia. Additionally, this review aims to explore the underlying mechanisms driving these sex differences and to identify existing knowledge gaps in this area.
View Article and Find Full Text PDFHow well do empirical molecular mechanics force fields model the cholesterol condensing effect?
J Chem Phys
January 2025
School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom.
Membrane properties are determined in part by lipid composition, and cholesterol plays a large role in determining these properties. Cellular membranes show a diverse range of cholesterol compositions, the effects of which include alterations to cellular biomechanics, lipid raft formation, membrane fusion, signaling pathways, metabolism, pharmaceutical therapeutic efficacy, and disease onset. In addition, cholesterol plays an important role in non-cellular membranes, with its concentration in the skin lipid matrix being implicated in several skin diseases.
View Article and Find Full Text PDFProgesterone affects periodontitis in perimenopausal women and in an experimental rat model.
J Dent Sci
January 2025
Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, China.
Background/purpose: Progesterone (PG) is sex steroid hormone that commonly used to control menopausal symptoms, but its exact role in periodontitis remains unclear. This study aimed to investigate the effects of PG on periodontitis in perimenopausal women and in an experimental rat model.
Materials And Methods: Total 412 perimenopausal women with periodontitis and a history of PG deficiency-induced uterine dysfunctional bleeding were enrolled, among which 209 women had been treated with PG.
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