Decrease in free-radical production with age in rat peritoneal macrophages

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Decrease in free-radical production with age in rat peritoneal macrophages.

The respiratory-burst reaction has been studied in rat peritoneal macrophages of different ages (3, 12 and 24 months) using phorbol 12-myristate 13-acetate (PMA) to stimulate NADPH oxidase. Production of O2-. and H2O2 decreased with age (about 50 and 75% respectively); however, no difference in NADPH oxidase activity was found. NO. production was also reduced with age (40%). Furthermore, a prog...

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This study was designed to test the free radical theory of aging by using Drosophila melanogaster as a model system. Oxygen free radicals are generated by mitochondria during the process of normal oxidative metabolism. Age-specific measurements of oxygen consumption, heat production and anti-oxidant enzyme activity were obtained from two inbred lines of male flies, one selected for longevity an...

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Stimulatory effect of vasoactive intestinal peptide (VIP) on cyclic AMP production in rat peritoneal macrophages.

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ژورنال

عنوان ژورنال: Biochemical Journal

سال: 1995

ISSN: 0264-6021,1470-8728

DOI: 10.1042/bj3120555