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Our view of renin-angiotensin system (RAS) has changed over the past two decades: new metabolites and pathways have been described; also the importance of local renin-angiotensin systems became more clearly understood. However, there is relatively scarce information about formation and action of angiotensin peptides in gastrointestinal tract, especially in the stomach. Here, using LC-ESI-MS method...
Production of arachidonic acid (AA) metabolites - prostacyclin (PGI2) in large vessels and prostaglandin E2 (PGE2) in microcirculation is intrinsically involved in maintenance of vascular wall homeostasis. EA.hy 926 is a hybrid cell line, is derived by fusion of HUVEC with A549 cells. The aim of this study was to examine the production of prostacyclin and PGE2 in resting and IL-1ß-stimulated EA.ha...
Activation of both poly (ADP-ribose) polymerase (PARP) and inducible nitric oxide synthase (NOS-2) have been implicated in the pathogenesis of various forms of inflammation, therefore compounds which may simultaneously inhibit both pathways are of potential therapeutic interest. We tested the influence of potent inhibitor of PARP, 1, 5-isoquinolinediol (ISO), on NOS-2 induction in model of mouse macrophages...
It is widely appreciated that inflammation and oxidant stress contribute to atherogenesis. Curcumin, a polyphenolic natural compound has been reported to possess anti-inflammatory and anti-oxidant actions. We hypothesized that curcumin could inhibit the development of atherosclerosis in the apoE/LDLR - double knockout mice fed with Western diet (21% fat, 0.15% cholesterol w/w, without cholic acid)...
Nitric oxide (NO), depending on the amount, time and source of generation may exert both, protective and deleterious actions during endotoxic acute lung injury (ALI). Evaluation of the expression and localization of NOS isoforms in the lung of lipopolysaccharide (LPS) - treated rats may contribute to understanding the role of NO in pathogenesis of ALI. Tissue samples (lung, heart, liver, kidney and...
Induction of NOS-2 in macrophages and smooth muscles within vascular wall with concomittant suppression of endothelial NOS-3 activity is considered to be a hallmark of vascular inflammation that triggers atherogenesis. Accordingly, drugs designed to reverse these changes should not only support vaning function of NOS-3 but also suppress proinflammatory NO production by NOS-2. It means that using selective...
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