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Obesity-induced mesenteric PVAT remodelling is sexually dimorphic, but not driven by ovarian hormones : Short title: Obesity induces sex-specific responses in mesenteric PVAT.
Cardiovasc Diabetol
January 2025
Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, Scotland, UK.
Background: Obesity, a major risk factor for cardiovascular disease (CVD), is associated with hypertension and vascular dysfunction. Perivascular adipose tissue (PVAT), a metabolically active tissue surrounding blood vessels, plays a key role in regulating vascular tone. In obesity, PVAT becomes dysregulated which may contribute to vascular dysfunction; how sex impacts the remodelling of PVAT and thus the altered vascular contractility during obesity is unclear.
View Article and Find Full Text PDFDiminazene Aceturate, an ACE2 activator, ameliorates testicular injury in diet-induced obese mice.
Reproduction
January 2025
W Li, Department of Urology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China.
DIZE improved obesity and metabolic disturbances in DIO mice. An increase of sperm account and motility, along with improved morphology and increased male fertility was observed after DIZE treatment. Both serum and intratesticular testosterone levels showed an increase.
View Article and Find Full Text PDFObesity and hypoxia have differential effects on myocardial innervation in the right ventricle of the male mouse heart.
J Anat
January 2025
Hannover Medical School, Institute of Functional and Applied Anatomy, Hannover, Germany.
Obesity, along with hypoxia, is known to be a risk factor for pulmonary hypertension (PH), which can lead to right ventricular hypertrophy and eventually heart failure. Both obesity and PH influence the autonomic nervous system (ANS), potentially aggravating changes in the right ventricle (RV). This study investigates the combined effects of obesity and hypoxia on the autonomic innervation of the RV in a mouse model.
View Article and Find Full Text PDFZinc Transporter 9 (ZnT9) Improves Obesity-Induced Asthenospermia by Attenuating Endoplasmic Reticulum Stress (ERS).
Biol Trace Elem Res
January 2025
Department of Physiology and Pathophysiology, School of Basic Medicine, Dali University, Dali, 671003, China.
The aim of this study was to explore the role of the ZnT9 protein in obesity-induced sperm maturation disorders in men. We generated a mouse model of obesity-induced weak spermatogenesis via a high-fat diet (HFD) for 10 weeks. In addition to the HFD, a 5-week intervention of salubrinal (SAL) (an inhibitor of endoplasmic reticulum stress) (1 mg/kg/day), ZnSO (15 mg/kg/day), and their combination was started at week 6, after which sperm viability and epididymal tissue damage were assessed.
View Article and Find Full Text PDFEffect of cardiomyocyte-specific lipid phosphate phosphatase 3 overexpression on high-fat diet-induced cardiometabolic dysfunction in mice.
Am J Physiol Heart Circ Physiol
January 2025
Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, 355 Campus Ring Road, Saint John, New Brunswick, E2L 4L5, Canada.
Lipid phosphate phosphatase 3 (LPP3) is a membrane-bound enzyme that hydrolyzes lipid phosphates including the bioactive lipid, lysophosphatidic acid (LPA). Elevated circulating LPA production and cellular LPA signaling are implicated in obesity-induced metabolic and cardiac dysfunction. Deletion of LPP3 in the cardiomyocyte increases circulating LPA levels and causes heart failure and mitochondrial dysfunction in mice.
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