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| http://dx.doi.org/10.2217/bmt.15.20 | DOI Listing |
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The compensatory enrichment of sphingosine-1-phosphate on HDL in FSGS enhances the protective function of glomerular endothelial cells compared to MCD.
Sci Rep
January 2025
Department of Nephrology, Fujian Medical University Union Hospital, Fuzhou, 350001, China.
Glomerular endothelial cells (GECs) are pivotal in developing glomerular sclerosis disorders. The advancement of focal segmental glomerulosclerosis (FSGS) is intimately tied to disruptions in lipid metabolism. Sphingosine-1-phosphate (S1P), a molecule transported by high-density lipoproteins (HDL), exhibits protective effects on vascular endothelial cells by upregulating phosphorylated endothelial nitric oxide synthase (p-eNOS) and enhancing nitric oxide (NO) production.
View Article and Find Full Text PDFFloralozone attenuates atherosclerotic vascular injury by regulating AMPKα/SREBP-1c pathway and down-regulating miR-33-5p.
Eur J Nutr
January 2025
College of Pharmacy, Sanquan College of Xinxiang Medical University, Xinxiang, 453003, China.
Background: Severe disruption of lipid metabolism in vivo is one of the central mechanisms in the development of atherosclerotic vascular injury (AVI). Reverse cholesterol transport (RCT) plays a pivotal role in eliminating excess cholesterol, preventing lipid deposition in the aorta, and reducing plaque formation associated with AVI. Floralozone (FL) reduces endothelial cell injury in AVI rats by regulating sphingosine-1-phosphate (S1P) expression.
View Article and Find Full Text PDFSparstolonin B Reduces Estrogen-Dependent Proliferation in Cancer Cells: Possible Role of Ceramide and PI3K/AKT/mTOR Inhibition.
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November 2024
Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey.
The aim of this study was to determine the effect of Sparstolonin B (SsnB) on cell proliferation and apoptosis in human breast cancer (MCF-7) and human ovarian epithelial cancer (OVCAR-3) cell lines in the presence and absence of estradiol hemihydrate (ES). Phosphoinositol-3 kinase (PI3K), phosphorylated protein kinase B alpha (p-AKT), phosphorylated mTOR (mechanistic target of rapamycin) signaling proteins, and sphingomyelin/ceramide metabolites were also measured within the scope of the study. The anti-proliferative effects of SsnB therapy were evaluated over a range of times and concentrations.
View Article and Find Full Text PDFLarge emissions of CO and CH due to active-layer warming in Arctic tundra.
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Climate and Ecosystem Sciences Division, Berkeley Lab, Berkeley, CA, USA.
Climate warming may accelerate decomposition of Arctic soil carbon, but few controlled experiments have manipulated the entire active layer. To determine surface-atmosphere fluxes of carbon dioxide and methane under anticipated end-of-century warming, here we used heating rods to warm (by 3.8 °C) to the depth of permafrost in polygonal tundra in Utqiaġvik (formerly Barrow), Alaska and measured fluxes over two growing seasons.
View Article and Find Full Text PDFThe role of sphingolipid rheostat in the adult-type diffuse glioma pathogenesis.
Front Cell Dev Biol
December 2024
Department of Medical Chemistry, Biochemistry and Clinical Chemistry, School of Medicine, University of Zagreb, Zagreb, Croatia.
Gliomas are highly aggressive primary brain tumors, with glioblastoma multiforme being the most severe and the most common one. Aberrations in sphingolipid metabolism are a hallmark of glioma cells. The sphingolipid rheostat represents the balance between the pro-apoptotic ceramide and pro-survival sphingosine-1-phosphate (S1P), and in gliomas it is shifted toward cell survival and proliferation, promoting gliomas' aggressiveness, cellular migration, metastasis, and invasiveness.
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