Zobrazeno 1 - 10
of 88
pro vyhledávání: '"R. Pérez-Campo"'
Publikováno v:
Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology. 168:149-158
The relationship of oxidative stress with maximum life span (MLSP) in different vertebrate species is reviewed. In all animal groups the endogenous levels of enzymatic and non-enzymatic antioxidants in tissues negatively correlate with MLSP and the m
Publikováno v:
Free Radical Biology and Medicine. 21:907-915
Dietary treatment with three diets differing in vitamin E, Low E (15 mg of vitamin E/kg diet), Medium E (150 mg/kg), or High E (1,500 mg/kg), resulted in guinea pigs with low (but nondeficient), intermediate, or high heart a-tocopherol concentration.
Publikováno v:
The International Journal of Biochemistry & Cell Biology. 27:1175-1181
Oxidative stress is considered a pathogenic factor in many disorders. The capacity of dietary vitamin E to increase global antioxidant capacity and to decrease lipid peroxidation was studied in the guinea pig, an animal that cannot synthesize ascorba
Autor:
R. Pérez-Campo, Susana Cadenas, Juan Prat, Mónica López-Torres, C. Rojas, Gustavo Barja, R. Pamplona
Publikováno v:
Free Radical Biology and Medicine. 17:105-115
Guinea pigs were fed during 5 weeks with three different levels of vitamin C in the diet: 33 (marginal deficiency), 660, or 13,200 mg of vitamin C per kg of diet. The group fed 660 mg of vitamin C/kg of diet showed strongly reduced levels of protein
Autor:
R. Madrid, Susana Cadenas, Gustavo Barja, Mónica López-Torres, C. Rojas, R. M. Arahuetes, R. Pérez-Campo
Publikováno v:
Europe PubMed Central
Previous studies have shown that the increase of the enzymatic antioxidant defense that takes place in the fetal rat lung at the end of gestation can be accelerated by the synthetic glucocorticoid dexamethasone and diminished by metyrapone, a blocker
Publikováno v:
Analytical Biochemistry. 199:81-85
A rapid and simple method for the simultaneous analysis of uric and ascorbic acid in extracts of animal tissue is described. The method uses reversed-phase ion-pair chromatography with ultraviolet detection. The technique allows efficient separation
Autor:
M Paz Nava, Marisa Puerta, G. Barja de Quiroga, R. Pérez-Campo, Mónica López-Torres, M. Abelenda
Publikováno v:
Biochemical Journal. 277:289-292
Cold acclimation increased the activities of superoxide dismutase, catalase, total and selenium (Se)-dependent glutathione peroxidases (GPx) and glutathione reductase by 2-4-fold in the brown adipose tissue (BAT) of cold-acclimated rats. Nevertheless
Publikováno v:
Journal of Neuroscience Research. 26:370-376
The five major antioxidant enzymes, glutathione, and in vivo or in vitro stimulated (Fe(++)-ascorbate) peroxidation were similar in old and young Rana perezi frogs. Long-term (2.5 months) treatment with aminotriazole strongly decreased cerebral catal
Publikováno v:
Journal of Thermal Biology. 15:193-199
1. 1. Rana perezi adult frogs were acclimated to cold (10 ± 2°C) and warm (29 ± 1°C) temperatures for 4 months. 2. 2.After acclimation, a partial compensation of the oxygen consumption of the animals was found because of a reduction of its therma
Autor:
Gustavo Barja, R. Pérez-Campo, J. Prat, M. López Torres, Susana Cadenas, C. Rojas, Reinald Pamplona
Publikováno v:
Mechanisms of ageing and development. 86(1)
Birds have a much higher maximum longevity (MLSP) than mammals of similar metabolic rate. Recent data showed that pigeon mitochondria produce oxygen radicals at a rate much slower than rat mitochondria, in spite of showing similar levels of oxygen co