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Berberine Improves Glucose and Lipid Metabolism in Obese Mice through the Reduction of IRE1/GSK-3β Axis-Mediated Inflammation.
Endocr Metab Immune Disord Drug Targets
January 2025
Department of Endocrinology, Jiangyin Hospital Affiliated to Nanjing University of Chinese Medicine, No. 130 Renmin Middle Road, Jiangyin City, Jiangsu Province, 214413, China.
Introduction: Berberine (BBR) has the characteristics of repressing hyperglycemia, obesity, and inflammation, as well as improving insulin resistance. However, the underlying mechanism remains to be fully understood. This study explores whether BBR regulates inositol requiring enzyme 1 (IRE1)/glycogen synthase kinase 3 beta (GSK-3β) axis to resist obesity-associated inflammation, thereby improving glucolipid metabolism disorders.
View Article and Find Full Text PDFInduction of macrophage efferocytosis in pancreatic cancer via PI3Kγ inhibition and radiotherapy promotes tumour control.
Gut
January 2025
Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
Background: The immune suppression mechanisms in pancreatic ductal adenocarcinoma (PDAC) remain unknown, but preclinical studies have implicated macrophage-mediated immune tolerance. Hence, pathways that regulate macrophage phenotype are of strategic interest, with reprogramming strategies focusing on inhibitors of phosphoinositide 3-kinase-gamma (PI3Kγ) due to restricted immune cell expression. Inhibition of PI3Kγ alone is ineffective in PDAC, despite increased infiltration of CD8+ T cells.
View Article and Find Full Text PDFMesenchymal stem cell conditioned medium improves hypoxic injury to protect islet graft function.
Zhong Nan Da Xue Xue Bao Yi Xue Ban
August 2024
Department of Radiology, Third Xiangya Hospital, Central South University, Changsha 410013, China.
Objectives: Islet transplantation is one of the most promising curative methods for type 1 diabetes mellitus (T1DM), but early hypoxic death of the graft post-transplantation impedes successful treatment. To improve the efficacy of islet transplantation and enhance islet cell resistance to hypoxia, reducing hypoxic injury before revascularization is crucial. Mesenchymal stem cells (MSCs) are known to regulate immune responses and protect against hypoxic damage through paracrine mechanisms.
View Article and Find Full Text PDFEffects of exogenous calcium pretreatment on the cold resistance of Phoebe zhennan seedlings.
Plant Physiol Biochem
December 2024
School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, 230036, PR China. Electronic address:
Phoebe zhennan is a high-quality timber tree species mainly distributed in the subtropical regions of China. It is very important to study and improve the cold resistance of P. zhennan from the mechanism and practice for expanding its introduction and cultivation range.
View Article and Find Full Text PDFECM29/proteasome-mediated self-antigen generation by CNS-resident neuroglia promotes regulatory T cell activation.
Cell Rep
January 2025
Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan. Electronic address:
Proteasomes generate antigenic peptides presented on cell surfaces-a process that, in neuroglia, is highly responsive to external stimuli. However, the function of the self-antigens presented by CNS parenchymal cells remains unclear. Here, we report that the fidelity of neuroglial self-antigens is crucial to suppress encephalitogenic T cell responses by elevating regulatory T (Treg) cell populations.
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