Nitric oxide against

One per cent potassium iodide in neutral buffered or alkali solutions is more stable and useful than 20% potassium iodide in bubblers for collection and determination of ozone in air. Either 1 % solution may be used to determine low concentrations of ozone however, there is a difference in their stoichiometry. Over the range of 0.01 to 30 p.p.m. (v./v.) results by the alkaline procedure should be multiplied by 1.54 to correct for stoichiometry. The neutral reagent does not require acidification and has more nearly uniform stoichiometry. The alkaline procedure is preferable when final analysis may be delayed. Experiments with boric acid for acidification of samples in the alkaline reagent show that some mechanism other than oxidation of iodide to iodate or periodate is involved, possibly formation of hypoiodite. Preliminary experiments with gas phase titrations of nitrogen dioxide and nitric oxide against ozone confirm the stoichiometry of the neutral reagent as 1 mole of iodine released for each mole of ozone. 

Privett BJ, Nutz ST, Schoenflsch MH. Efficacy of surface-generated nitric oxide against Candida albicans adhesion and biofllm formation. Biofouling 2010 26 973-83. http //dx.doi.org/ 0.1080/08927014.2010.534552. 

Nitric oxide is a colourless, monomeric, paramagnetic gas with a low mp and bp (Table 11.9). It is thermodynamically unstable and decomposes into its elements at elevated temperatures (1100-1200°C), a fact which militates against its direct synthesis from N2 and O2. At high pressures and moderate temperatures... 

Timmins GS, S Master, F Rusnak, V Deretic (2004) Nitric oxide generated from isoniazid activation by KatG source of nitric oxide and activity against tunerculosis. Antimicrob Agents Chemother 48 3006-3009. 

Lee HT, Yang SW, Kim KH, Seo EK, Mar W. Pseudoguaianolides isolated from Inula britannica var. chinenis as inhibitory constituents against inducible nitric oxide synthase. Arch Pharm Res 2002 25 151-153. 

Rajan, T.V., Porte, P., Yates, J.A., Keefer, L. and Shultz, L.D. (1996) Role of nitric oxide in host defense against an extracellular, metazoan parasite, Brugia malayi. 

The administration of Qio or quercetin to rats protected against endotoxin-induced shock in rat brain [252]. It was found that the pretreatment with these antioxidants diminished the shock-induced increase in brain MDA and nitric oxide levels. Interesting data have been obtained by Yamamura et al. [253] who showed that ubiquinone Qi0 is able to play a double role in mitochondria. It was found that on the one hand, Q10 enhanced the release of hydrogen peroxide from antimycin A- or calcium-treated mitochondria, but on the other hand, it inhibited mitochondrial lipid peroxidation. It was proposed that Q10 acts as a prooxidant participating in redox signaling and as an antioxidant suppressing permeability transition and cytochrome c release. 

In 1986, the antioxidant effects of thioredoxin reductase were studied by Schallreuter et al. [81]. It has been shown that thioredoxin reductase was contained in the plasma membrane surface of human keratinocytes where it provided skin protection against free radical mediated damage. Later on, the reductive activity of Trx/thioredoxin reductase system has been shown for the reduction of ascorbyl radical to ascorbate [82], the redox regulation of NFkB factor [83], and in the regulation of nitric oxide-nitric oxide synthase activities [84,85],... 

M. F., Inhibition of neuronal nitric oxide synthase by 7-nitroindazole protects against MPTP-induced neurotoxicity in mice, J. Neurochem. 

B. R., ft al., Blockade of neuronal nitric oxide synthase protects against excitotoxicity in vivo, J. Neurosci. 15 (1995), p. 8419-8429... 

N. V. Gorbunov, A. N. Osipov, B. W. Day, B. Zayas-Rivera, V. E. Kagan, N. M. Elsayed, Reduction of Ferrylmyoglobin and Ferrylhemoglobin by Nitric Oxide A Protective Mechanism against Ferryl Hemoprotein-Induced Oxidations , Biochemistry 1995, 34, 6689-6699. 

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