Nitric oxide (NO) has been implicated in the pathogenesis of migraine and treatment with its exogenous donor glyceryl trinitrate (GTN) represents widely accepted experimental "migraine model". In this study, glyceryl trinitrate was administered intraperitoneally to carps, serum nitrite and nitrate levels were determined, permeability of blood-brain barrier was investigated, and histological cha...

Objective: Screening of alpha-pinene on L-arginine induced acute pancreatitis model. Material and Methods: In this model the acute pancreatitis was determined at 24h by determination of pancreatic wet weight/body weight ratio, nitrate/nitrite levels, lipid peroxidation (thiobarbituric acid reactive substances (TBARS)], proinflammatory cytokines [tumor necrosis factor (TNF)-α, C-reactive protein...

Pathophysiological levels of oxygen radical metabolites have been studied as indicators of trauma caused by burn insult. The 2, 3-diaminonaphthalene assay is routinely used in the determination of nitrite/nitrate levels in biological fluids and cellular extracts as one indicator of nitric oxide activity. Several laboratories, including ours, have noted matrix-based interferences resulting in de...

Abstract The objective of this study was to compare nitrate concentrations in soil, forage, and the serum animals grazing high (HNO3) low (LNO3) forages. fall before began one-half a 6-ha field amended with manure increase levels soil. Forage barley (Hordeum vulgare L. var. Vernal) planted spring at 45 kg/ha. divided into twenty-seven 0.2-hectare paddocks (n = 13 HNO3; n =14 LNO3). Twenty-four ...

BACKGROUND AND AIMS Nitro-oxidative stress may have pathophysiological consequences. The study aimed to assess the nitro-oxidative stress, the vascular growth factor, and metalloproteinase-9 levels in patients with noncirrohic and cirrhotic portal hypertension. METHODS Patients with noncirrhotic portal hypertension (n=50) and cirrhotic portal hypertension (n=50) from the 3rd Medical Clinic in...

Background—NADPH oxidase is believed to modulate arterial tone, but its role in humans is still unclear. The objective of this study was to evaluate whether NADPH oxidase is involved in flow-mediated arterial dilation (FMD). Methods and Results—Twenty-five patients with hereditary deficiency of gp91, the catalytic core of NADPH oxidase, (X-CGD), 25 healthy subjects, and 25 obese patients matche...

OBJECTIVES To know whether Scurrula atropurpurea is able to modulate total plasma nitrate/nitrite levels, decrease endothelial damage, and increase endothelial progenitor cells (EPCs) in hypertensive rats. MATERIALS AND METHODS The rats were divided in 5 groups: control (normotensive) group, Desoxy cortico sterone (DOCA)-salt hypertensive group, and three DOCA-salt hypertensive groups. All 5 ...

Endothelial dysfunction, with impaired bioavailability and/or bioactivity of the vasoprotective molecule, nitric oxide, appears to be a vital step in initiation atherosclerosis. Several studies have shown that dietary nitrate/nitrite can significant benefits on human cardiovascular homeostasis. Although serum nitrite concentrations reach micromolar levels, physiological significance normal tiss...

A randomized, double-blinded, placebo-controlled and crossover study was conducted to simultaneously measure the effects, 3 h after consumption and after 4-wk daily exposure to plant sterols-enriched food product, on in vivo nitrite and nitrate production in healthy adults. Eighteen healthy participants (67% female, 35.3 [mean] ± 9.5 [SD] years, mean body mass index 22.8 kg/m2 ) received 2 soy ...