Methods. Changes in isometric tension were recorded in helical strips of the arteries, and the presence of perivascular nerve containing NADPH diaphorase was histochemically demonstrated. Results. Nicotine (10~ M, EOA and IOA) and transmural electrical stimulation (5 Hz, EOA) produced a slight or no contraction followed by a moderate relaxation in the strips contracted with prostaglandin F2a. T...

Two proteins (P1 and P2, with weights of 57,500 and 27,500 respectively) were isolated from Euglena gracilis. Both proteins show cyanide-insensitive superoxide dismutase activity in the "classical" superoxide dismutase assay, using xanthine-xanthine oxidase as O2.- generator. If O2.- is generated chemically (autoxidation of reduced anthraquinone), photochemically (illuminated riboflavine) or pu...

The cytotoxic effects of many quinones are thought to be mediated through their one-electron reduction to semiquinone radicals, which subsequently enter redox cycles with molecular oxygen to produce active oxygen species and oxidative stress. The two-electron reduction of quinones to diols, mediated by DT-diaphorase (NAD(P)H: (quinone-acceptor) oxidoreductase), may therefore represent a detoxif...

Garlic belongs to the Allium genus, which includes more than 750 species divided into 60 taxonomic groups. It is cultivated in many countries throughout world for bulb and used as a spice functional food. The plant vegetatively propagates. This review will focus on origins, biology, analysis of genetic diversity, pharmacological properties garlic. appears from this synthesis that sativum derive...

This paper is a light microscopical study describing the detailed morphology and quantitative distribution of local circuit neurones in areas 25, 32, and 24b of the medial prefrontal cortex (mPFC) in the rat. Cortical interneurones were identified immunocytochemically by their expression of calretinin (CR), parvalbumin (PV), and calbindin D-28k (CB) immunoreactivity. Neurones immunoreactive for...

Oltipraz [5-(2-pyrazinyl)-4-methyl-1,2-dithiole-3-thione] is a synthetic dithiolethione with chemopreventive activity against carcinogen-induced neoplasia of liver, lung, and colon in several animal model systems. Protection from tumor formation is associated with elevation of Phase II enzymes, including glutathione (GSH) transferase and NAD(P)H:quinone oxidoreductase (DT-diaphorase) in experim...