Despite the evidence that cytokines stimulate nitric oxide (NO) production by inducible nitric oxide synthase (iNOS), several reports recently demonstrated that the hypotensive response related to endothelial nitric oxide synthase (eNOS) activity could be inhibited by the same cytokines. The aim of the present work was to analyze whether NO generated by vascular smooth muscle cells (VSMC) could...

Endothelial barrier function is regulated by adherens junctions (AJs) and caveolae-mediated transcellular pathways. The opening of AJs that is observed in caveolin-1(-/-) (Cav-1(-/-)) endothelium suggests that Cav-1 is necessary for AJ assembly or maintenance. Here, using endothelial cells isolated from Cav-1(-/-) mice, we show that Cav-1 deficiency induced the activation of endothelial nitric ...

Effects of nicotine on arterial endothelium-dependent relaxations mediated by nitric oxide are controversial. Experiments were designed to test the hypothesis that nicotine can directly alter activity of endothelial nitric-oxide synthase (eNOS). NOS from aortic endothelial cells of untreated dogs and recombinant eNOS, neuronal NOS, and inducible NOS were used for these experiments. NOS activity...

Nitric oxide exerts important regulatory functions in various brain processes. Its synthesis in neurons has been most commonly ascribed to the neuronal nitric oxide synthase (nNOS) isoform. However, the endothelial isoform (eNOS), which is significantly associated with caveolae in different cell types, has been implicated in synaptic plasticity and is enriched in the dendrites of CA1 hippocampa...

ACTH = adrenocorticotrophic hormone; ARDS = acute respiratory distress syndrome; CO = cardiac output; CT = computed tomography; CVP = central venous pressure; CVVHF = continuous venovenous haemofiltration; eNOS = endothelial nitric oxide synthase; ICU = intensive care unit; LPS = lipopolysaccharide; NO = nitric oxide; PAWP = pulmonary artery wedge pressure; PEEP = positive end-expiratory pressu...

RATIONALE Endothelial adherens junction proteins constitute an important element in the control of microvascular permeability. Platelet-activating factor (PAF) increases permeability to macromolecules via translocation of endothelial nitric oxide synthase (eNOS) to cytosol and stimulation of eNOS-derived nitric oxide signaling cascade. The mechanisms by which nitric oxide signaling regulates pe...

Purpose: To investigate the clinical effects of dexmedetomidine and propofol on erythrocyte deformability (ED) in patients undergoing laparoscopic cholecystectomy.Methods: A total 522 gallbladder removal surgery were randomly divided into groups (dexmedetomidine group), B (propofol C (control). Erythrocyte suspensions prepared from each group. Then, index (EI) was measured terms RBC deformabili...

We demonstrate for the first time that endomembrane-delimited H-Ras mediates VEGF-induced activation of endothelial nitric-oxide synthase (eNOS) and migratory response of human endothelial cells. Using thiol labeling strategies and immunofluorescent cell staining, we found that only 31% of total H-Ras is S-palmitoylated, tethering the small GTPase to the plasma membrane but leaving the function...

The expression of nitric oxide synthase (NOS) isoforms in the ovaries of pigs was examined to study the involvement of nitric oxide, a product of NOS activity, in the function of the ovary. Western blot analysis detected three types of NOS in the ovary, including constitutive neuronal NOS (nNOS), endothelial NOS (eNOS) and inducible NOS (iNOS); eNOS immunoreactivity was more intense compared wi...

Genetic polymorphism has a vital role in the pathogenesis and development of myocardial infarction (MI). Single nucleotide at any one amino acid sequences can result diseased state. A single gene exhibit genetic more than position giving rise to different variants. angiotensinogen (AGT) M235T, AGT T174M, angiotensin-1-converting enzyme (ACE) I/D, endothelial nitric oxide synthase (eNOS), methyl...