Experiments were performed to establish a procedure for in vivo measurement of nitrite utilization by leaf tissue of bean (Phaseolus vulgaris L. cv. Top Crop).To measure light-dependent nitrite disappearance, a single disc of leaf tissue was exposed to light for 1 hour at 30 C while immersed in incubation medium (approximately 0.11 milliliter per square centimeter of leaf area) in the bottom of...

Background—Nitrite can be converted to nitric oxide (NO) by a number of different biochemical pathways. In newborn lambs, an aerosol of inhaled nitrite has been found to reduce pulmonary blood pressure, possibly acting via conversion to NO by reaction with intraerythrocytic deoxyhemoglobin. If so, the vasodilating effects of nitrite would be attenuated by free hemoglobin in plasma that would ra...

abstract background: aluminum phosphide as a fumigant is extensively used for wheat preservation from rodents and bugs especially in silos worldwide. there is increasing number of acute intoxication with this potentially lethal compound because of its easy availability. we have tried to locate predictors of poor prognosis in patients with aluminum phosphide intoxication in order to find patient...

angiotensin-ii is a multifunctional hormone that regulates blood pressure, plasma volume, neuronal functions, electrolyte balance, thrust and various other vital mechanisms. it acts through its receptors at 1 and at 2 . the involvement of angiotensin-ii and its receptors in cognition is still ambiguous. therefore, the present study was designed to investigate the effect of angiotensin-ii (2 μg/...

During anaerobic nitrate respiration Bacillus subtilis reduces nitrate via nitrite to ammonia. No denitrification products were observed. B. subtilis wild-type cells and a nitrate reductase mutant grew anaerobically with nitrite as an electron acceptor. Oxygen-sensitive dissimilatory nitrite reductase activity was demonstrated in cell extracts prepared from both strains with benzyl viologen as ...

Severely Ca-deficient Triticum aestivum L. seedlings accumulated high levels of nitrite and moderate levels of nitrate and organic nitrogen, but contained unaltered levels of hydroxylamine. Nitrite accumulation was not related to molybdenum deficiency, or altered cellular pH. Nitrate reductase was decreased by Ca deficiency, apparently by repression of enzyme synthesis from accumulated nitrite ...

1. The resistance of adrenal-deficient rats to bacterial intoxication has been significantly increased by an extract of the adrenal cortex. 2. This is shown both for acute intoxication with killed Bacillus typhosus and for chronic intoxication with killed Staphylococcus aureus. 3. During the height of the bacterial intoxication relatively large amounts of the cortical hormone are apparently req...

BACKGROUND I.v. 0.9% sodium chloride (normal saline) is frequently used to treat ED patients with acute alcohol intoxication despite the lack of evidence for its efficacy. OBJECTIVE The study aims to compare treatment with i.v. normal saline and observation with observation alone in ED patients with acute alcohol intoxication. METHODS A single-blind, randomised, controlled trial was conduct...

The aim of our work was to investigate the peculiarities changes in endogenous intoxication rates: medium mass molecules (MMM) and erythrocyte index (EII) blood guinea pigs formation combined pathology - experimental periodontitis (EP) immobilization stress (IS).The results biochemical studies showed that at all stages development there is a consistent increase degree intoxication, which domina...