Homocysteine (Hcy) is a risk factor for atherosclerosis. It is generally accepted that inducible nitric oxide synthase (iNOS) is a key enzyme in the regulation of vascular disease. The aim of the present study is to investigate the effects of peroxisome proliferator-activated receptor ligands on iNOS in the presence of Hcy in human monocytes. Foam cells, induced by oxidize low density lipoprote...

Inducible nitric oxide synthase (iNOS) protein is expressed in cardiac myocytes of patients and experimental animals with congestive heart failure (CHF). Here we show that iNOS expression plays a role in pressure overload-induced myocardial chamber dilation and hypertrophy. In wild-type mice, chronic transverse aortic constriction (TAC) resulted in myocardial iNOS expression, cardiac hypertroph...

It has been previously shown that the inducible nitric oxide (NO) synthase (iNOS; NOS-2) is elevated after hemorrhage, and that iNOS-derived NO participates in the upregulation of inflammation as well as lung and liver injury postresuscitation from shock. The purpose of this study was to elucidate the time course of iNOS mRNA expression, as well as the cellular and subcellular localization of i...

the aim of this study was to investigate the effects of nigella sativa  (ns) fixed oil in comparison to dexamethasone (dex) on inducible nitric oxide synthase (inos), peripheral blood eosinophils (pbe), allergen specific serum igg1 and interleukins and airway inflammation in a murine model of allergic asthma. thirty-one mice were divided into four groups. group  i (n =  6) served as the control...

Inducible nitric oxide synthase (iNOS), which produce large amounts of nitric oxide (NO), is induced in macrophages and microglia in response to inflammatory mediators such as LPS and cytokines. Although iNOS is mainly expressed by microglia that become activated in different pathological and experimental situations, it was recently reported that undifferentiated amoeboid microglia can also exp...

RATIONALE Inducible nitric oxide synthase (iNOS) has been implicated in the development of acute lung injury. Recent studies indicate a role for mechanical stress in iNOS and endothelial NOS (eNOS) regulation. OBJECTIVES This study investigated changes in lung NOS expression and activity in a mouse model of ventilator-induced lung injury. METHODS C57BL/6J (wild-type [WT]) and iNOS-deficient...

Inducible nitric oxide synthase (iNOS) is involved in many physiological and pathophysiological processes, including septic shock and acute kidney failure. Little is known about transcriptional regulation of the human iNOS gene in vivo under basal conditions or in sepsis. Accordingly, we developed transgenic mice carrying an insertional human iNOS promoter-reporter gene construct. In these mice...

Inducible nitric oxide (NO) synthase (iNOS) plays an important role in cell injury and host defense. While undetectable in normal tissues, iNOS expression is induced by endotoxins and inflammatory cytokines primarily via the IκB kinase/nuclear factor-κB (IKK-NF-κB) and Janus kinase (JAK)-signal transducers and activators of transcription 1 (STAT1) pathways. Our previous studies found that heat ...

Nitric oxide synthase (NOS) expression is regulated transcriptionally in response to cytokine induction and posttranslationally by palmitoylation and trafficking into perinuclear aggresome-like structures. We investigated the effects of multifunctional calcium/calmodulin-dependent protein kinase II protein kinase (CaMKII) on inducible NOS (iNOS) trafficking in cultured rat aortic vascular smoot...