The present study aimed at comparing the effects of low concentrations of BPDZ 44, a new pyridothiadiazine derivative, and diazoxide on 86Rb outflow, 45Ca outflow, 45Ca uptake and insulin release from rat pancreatic islets. Both drugs caused similar modifications, but the effects of BPDZ 44 on the cationic and secretory events were much more marked than those of diazoxide. It is suggested that BPDZ 44 could be valuable tool for further studies of the KATP channels.
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http://dx.doi.org/10.1007/BF01956464 | DOI Listing |
Pancreatitis is an inflammatory disease of the pancreas that can arise due to various factors, including environmental risks such as diet, alcohol, and smoking, as well as genetic predispositions. In some cases, pancreatitis may progress and become chronic, leading to irreversible damage and impaired pancreatic function. Genome-wide association studies (GWAS) have identified polymorphisms at the X-linked locus as risk factors for both sporadic and alcohol-related chronic pancreatitis.
View Article and Find Full Text PDFJ Physiol
December 2024
Department of Medical Biosciences, Research Institute for Medical Innovation, Radboud University Medical Center, Nijmegen, The Netherlands.
As a member of the transient receptor potential (TRP) superfamily of ion channels, TRPV5 is a unique Ca-selective channel important for active reabsorption of Ca in the kidney. TRPV5-mediated Ca entry into the cell is controlled by a negative feedback mechanism, in which calmodulin (CaM) blocks the TRPV5 pore upon Ca binding. Combining microscopy techniques and biochemical assays, the present study uncovered an auxiliary role for CaM in the regulation of human (h)TRPV5 intracellular trafficking.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
October 2024
National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China.
To withstand complex microbial challenges, the mammalian gut largely depends on the secretion of diverse antimicrobial proteins. Type III interferons (IFNλs) are ordinarily considered inducible antiviral cytokines involved in intestinal immunity. Unlike other IFNλs, we found that newly identified IFNλ4 is an intestinal antibacterial protein.
View Article and Find Full Text PDFMol Cell Endocrinol
December 2024
Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada. Electronic address:
Zinc transporter 8 (ZnT8) is highly expressed in pancreatic beta cells, localizes to insulin secretory granules (ISG), and regulates zinc content. ZnT8 gene polymorphisms have revealed a relationship between ZnT8 activity and type 2 diabetes (T2D) risk, however, the role of beta-cell ZnT8 is not well understood. A beta cell specific ZnT8 knockout (ZnT8 BKO) mouse model was investigated.
View Article and Find Full Text PDFFront Immunol
September 2024
Airway Innate Immunity Research (AiiR) Group, Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom.
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