Dieta afro-bahiana, estrés oxidativo y ejercício físico

Vazquez, Mirian Rocha; El-Bachá, Ramon dos Santos; Ordás, Concepción Ávila; Ribeiro, Emilie B.; Vicente, José G. Villa; Rodrigues, Luiz Erlon

doi:10.1590/s1415-52732006000600004

Cited by 3 publications

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“…Para manter a homeostase oxidativa, o organismo desenvolve mecanismos de defesa antioxidantes endógenos, tais como as enzimas catalase (EC 1.11.1.6), superóxido dismutase (EC 1.15.1.1) e glutation peroxidase (EC 1.11.1.9), além de antioxidantes exógenos de natureza vitamínica ( -caroteno, -tocoferol e ácido ascórbico), mineral (zinco, selênio e cobre) e bioflavonoides existentes nos alimentos, sobretudo de origem vegetal (frutas, hortaliças, cereais e leguminosas) [12][13][14] . Resultados epidemiológicos e experimentais indicam que dietas equilibradas podem reduzir o estresse oxidativo 15 . Como consequência do Exercício Físico Extenuante (EFE), tem sido observada uma redução na concentração da vitamina E nas membranas celulares, assim como aumento da atividade da catalase em eritrócitos humanos, evidenciando, de forma indireta, indução de estresse oxidativo 5,15 .…”

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“…Resultados epidemiológicos e experimentais indicam que dietas equilibradas podem reduzir o estresse oxidativo 15 . Como consequência do Exercício Físico Extenuante (EFE), tem sido observada uma redução na concentração da vitamina E nas membranas celulares, assim como aumento da atividade da catalase em eritrócitos humanos, evidenciando, de forma indireta, indução de estresse oxidativo 5,15 .…”

Section: N T R O D U ç ã Ounclassified

“…Uma dieta equilibrada aporta ao mesmo tempo antioxidantes de natureza vitamínica, mineral, carotenoides e fenóis, que, de forma interativa, podem aumentar a capacidade antioxidante do organismo e reduzir a atividade da CAT 15 . Segundo Stachowska et al 23 , a administração de dieta tipo mediterrâneo por 6 meses reduziu significativamente a atividade da catalase em eritrócitos de pacientes submetidos a transplante renal.…”

Section: I S C U S S ã Ounclassified

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Relações da dieta ovo-lácteo-vegetariana com o exercício físico e as enzimas antioxidantes superóxido dismutase e catalase

et al. 2011

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OBJETIVO: O objetivo deste trabalho foi estudar a influência da dieta ovo-lácteo-vegetariana e do exercício físico extenuante sobre as atividades das enzimas catalase e superóxido dismutase em dez indivíduos masculinos, jovens e saudáveis. MÉTODOS: O controle alimentar aplicou-se por quatro meses. Antes disso, foram recolhidas amostras de sangue em estado basal e cinco minutos após o exercício físico extenuante efetuado em esteira rolante. O mesmo procedimento foi aplicado após o controle alimentar. RESULTADOS: Os resultados mostraram que a dieta ovo-lácteo-vegetariana, em condições de repouso, reduziu de forma significativa a atividade da enzima catalase em 18,98% (p<0,05) e aumentou, também de forma significativa, a atividade da enzima superóxido dismutase em 77,84% (p<0,001). Depois do exercício físico extenuante, a dieta ovo-lácteo-vegetariana reduziu a atividade da enzima catalase de forma significativa em 26,11% (p<0,05) e não alterou a atividade da enzima superóxido dismutase. CONCLUSÃO: Os resultados indicam que tanto as atividades da catalase como da superóxido dismutase são sensíveis a uma dieta ovo-lácteo-vegetariana adequada.
OBJECTIVE: This study aimed to study the influence of an ovolactovegetarian diet and strenuous physical exercise on the activity of the enzymes catalase and superoxide dismutase in 10 young, healthy men whose diet was controlled for four months. METHODS: Blood samples were collected at baseline and after the four-month period, before strenuous exercise and after 5 minutes of strenuous exercise on a treadmill. RESULTS: The results showed that the ovolactovegetarian diet reduced the activity of the enzyme catalase by 18.98% (p<0.05) and increased the activity of the enzyme superoxide dismutase by 77.84% (p<0.001) before strenuous exercise. After strenuous exercise, the ovolactovegetarian diet reduced the activity of the enzyme catalase by 26.11% (p<0.05) and did not affect the activity of the enzyme superoxide dismutase. CONCLUSION: The results indicate that a healthy ovolactovegetarian diet impacts the activity of both enzymes

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Relações da dieta ovo-lácteo-vegetariana com o exercício físico e as enzimas antioxidantes superóxido dismutase e catalase

et al. 2011

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“…One of the models used to study the effects of antioxidant supplementation on the nourishment of horses involves the assessment of its influence on the constituents of the blood and biomarkers of oxidative stress among horses in distinct training and breeding systems (Silveira, ; Vázquez et al., ). However, it is important to understand the positive and negative effects of each new supplement that is developed, to ensure the most efficient and economic use possible.…”

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Antioxidant and haematological biomarkers in different groups of horses supplemented with polyunsaturated oil and vitamin E

Mélo

Diniz

Lira

et al. 2016

Animal Physiology Nutrition

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Oxidative stress has been correlated with pathologies that impair the performance of athlete horses. The aim of this study was to assess the effects of supplementation with a mixture of polyunsaturated oil and vitamin E on the antioxidant and haematological biomarkers of horses. Horses under maintenance care (n = 6) and horses in training (n = 10) received 100 and 300 ml of the oil mixture respectively. Supplementation was provided for a period of 8 weeks, together with isocaloric inclusion. Blood samples were collected at three time periods (pretest, after 4 weeks and after 8 weeks) to analyse the following: the red blood cell count (RBCc); haemoglobin (Hb); haematocrit (HT); leucocytes; lymphocytes; platelets; the mean corpuscular volume (MCV); the mean corpuscular haemoglobin concentration (MCHC); the standard deviation of the red blood cell distribution width (RDW-SD); the coefficient of variation of the red blood cell distribution width (RDW-CV); glutathione peroxidase (GPx); superoxide dismutase (SOD); uric acid (UrAc); total plasma proteins (TPP); and creatine kinase (CK). After the 8 weeks of supplementation, animals under maintenance care exhibited significant increases in SOD, UrAc, the white blood cell count (WBCc), the RDW-SD and the RDW-CV (p < 0.05). The animals in training exhibited increases in GPx, SOD and UrAc (p < 0.05). In conclusion, supplementation with polyunsaturated oil and vitamin E increases blood antioxidants among animals under maintenance and in training, with different trends, while contributing to the fight against oxidative stress in each group analysed.

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Influence of selenium and vitamin E supplementation on energy metabolism in horses used in policing activity

et al. 2015

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This study evaluated the effect of supplementation with selenium and vitamin E on some blood variables in 11 adult male horses used in policing activity. Each animal was treated with 2.8 mg/400 kg of selenium and 2.000 UI/400 kg of vitamin E of body weight, orally, for a period of 30 days. On days 0 (before) and 30 (after), the animals were assessed, and blood samples were obtained before and after exercise. Glucose and lactate and plasma cortisol and serum insulin were determined. On day 0, serum cortisol concentrations were 56.8±12.1 ng/ml and 43.4±19.2 ng/ml, plasma lactate were 6.2±0.7 mg/dl and 12.3±9.2 mg/dl, serum glucose levels were 69.2±5.2 mg/dl and 77.5±6.6 mg/dl, and serum insulin were 3.1±5.1 μUI/ml and 1.5±1.6 μUI/ml, respectively, before and after exercise (M1 and M2). On day 30, serum cortisol concentrations were 55.6±15.6 ng/ml and 27.6± 12.2 ng/mL, plasma lactate were 7.0±0.9 mg/dl and 8.4± 1.7 mg/dl, plasma glucose were 76.0±4.1 mg/dl and 77.1± 8.9 mg/dl, and serum insulin were 3.3±6.9 μUI/ml and 2.1± 3.7 μUI/ml, respectively, before and after exercise (M1S and M2S). As a result of the exercise, it was shown a reduction in serum insulin and an increase in plasma lactate and glucose. Supplementation with selenium and vitamin E resulted in decreased levels of cortisol and lactate after physical activity, possibly indicating that supplementation contributed to better utilization of plasma glucose and improved adaptation to physical exercise.

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Dieta afro-bahiana, estrés oxidativo y ejercício físico

Cited by 3 publications

References 17 publications

Relações da dieta ovo-lácteo-vegetariana com o exercício físico e as enzimas antioxidantes superóxido dismutase e catalase

Relações da dieta ovo-lácteo-vegetariana com o exercício físico e as enzimas antioxidantes superóxido dismutase e catalase

Antioxidant and haematological biomarkers in different groups of horses supplemented with polyunsaturated oil and vitamin E

Influence of selenium and vitamin E supplementation on energy metabolism in horses used in policing activity

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