نتایج جستجو برای: zo 2
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To the general reader and watcher of television programmes medical ethics may appear to be something new. This is not so, for hundreds of articles and many books have appeared over the last zo years or so to discuss and analyse the problems arising from the practice of medicine. In this study of two larger works Medical Ethics and Manipulation both by Bernard Hdring, a Roman Catholic theologian...
Insulin-resistance induces cerebrovascular dysfunction and increases the risk for stroke. We investigated whether rosuvastatin (RSV), a 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor, can reverse reduced cerebrovascular responsiveness in insulin-resistant rats. Dilator responses of the basilar artery (BA) were examined after 1-day or 4-wk RSV (2 mg.kg(-1).day(-1)) treatment in anesth...
Occludin is a transmembrane protein of the tight junction that functions in creating both an intercellular permeability barrier and an intramembrane diffusion barrier. Creation of the barrier requires the precise localization of occludin, and a distinct family of transmembrane proteins called claudins, into continuous linear fibrils visible by freeze-fracture microscopy. Conflicting evidence ex...
The role of mitogen-activated protein kinases (MAPK) in the mechanism of EGF-mediated prevention of acetaldehyde-induced tight junction disruption was evaluated in Caco-2 cell monolayers. Pretreatment of cell monolayers with EGF attenuated acetaldehyde-induced decrease in resistance and increase in inulin permeability and redistribution of occludin, zona occludens-1 (ZO-1), E-cadherin, and β-ca...
Acetyl salicylic acid (ASA) is one of the most frequently prescribed medications for the secondary prevention of cardiovascular and cerebrovascular events. It has recently been reported to cause small intestinal mucosal injury at a considerably higher rate than previously believed. The aim of this study is to investigate the mechanism by which this occurs using an in vitro small intestine model...
Objective: A rat model is here used to test a hypothesis that Momordica charantia (Bitter melon (BM)) extract favorably alters processes in cardiovascular tissue and is systemically relevant to the pathophysiology of type 2 diabetes (T2DM) and related cardiovascular disease. Methods: Male Lean and Zucker Obese (ZO) rats were gavage-treated for six weeks with 400 mg/kg body weight bitter melon (...
The structure and function of both adherens (AJ) and tight junctions (TJ) are dependent on the cortical actin cytoskeleton. The Zonula Occludens (ZO)-1 and -2 proteins have contextdependent interactions with both junction types and bind directly to F-actin and other cytoskeletal proteins, suggesting they might regulate cytoskeletal activity at cell junctions. To address this hypothesis, we gene...
ZO-1, originally identified by mAb techniques, is the first protein shown to be specifically associated with the tight junction. Here we describe and compare the physical characteristics of ZO-1 from mouse liver and the Madin-Darby canine kidney (MDCK) epithelial cell line. The ZO-1 polypeptide has an apparent size of 225 kD in mouse tissues and 210 kD in canine-derived MDCK cells as determined...
Hydroquinone (HQ), a major reactive metabolite of benzene, contributes to benzene‑induced leukemia. The molecular mechanisms that underlie this activity remain to be elucidated. Poly ADP‑ribosylation (PARylation) is a type of reversible posttranslational modification that is performed by enzymes in the PAR polymerase (PARP) family and mediates different biological processes, including apoptosis...
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