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Filik H, Avan AA, Aydar S, Çakar Ş. Determination of Tocopherol Using Reduced Graphene Oxide-Nafion Hybrid-Modified Electrode in Pharmaceutical Capsules and Vegetable Oil Samples. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0353-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ramadan MF, Hassan NA, Elsanhoty RM, Sitohy MZ. Goldenberry (Physalis peruviana) Juice Rich in Health-Beneficial Compounds Suppresses High-Cholesterol Diet-Induced Hypercholesterolemia in Rats. J Food Biochem 2012. [DOI: 10.1111/j.1745-4514.2012.00669.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mohamed Fawzy Ramadan
- Agricultural Biochemistry Department; Faculty of Agriculture; Zagazig University; Zagazig 44519 Egypt
- Department of Nutrition and Food Science; University of Maryland; College Park MD 20742
| | - Nesma Ali Hassan
- Agricultural Biochemistry Department; Faculty of Agriculture; Zagazig University; Zagazig 44519 Egypt
| | - Rafaat M. Elsanhoty
- Department of Industrial Biotechnology; Branch of Food and Dairy Biotechnology; Institute of Genetic Engineering and Biotechnology; Menoufia University; Zagazig Egypt
| | - Mahmoud Z. Sitohy
- Agricultural Biochemistry Department; Faculty of Agriculture; Zagazig University; Zagazig 44519 Egypt
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Kim HS, Choi EO, Park C, Choi YH, Hyun SK, Hwang HJ. Effect of Hizikia fusiforme Extracts on Antioxidant Enzyme Activity and Vitamin E Concentration in Rats. ACTA ACUST UNITED AC 2011. [DOI: 10.3746/jkfn.2011.40.11.1556] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Barba FJ, Esteve MJ, Frígola A. Determination of vitamins E (α-, γ- and δ-tocopherol) and D (cholecalciferol and ergocalciferol) by liquid chromatography in milk, fruit juice and vegetable beverage. Eur Food Res Technol 2011. [DOI: 10.1007/s00217-011-1450-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li N, Jia X, Chen CYO, Blumberg JB, Song Y, Zhang W, Zhang X, Ma G, Chen J. Almond consumption reduces oxidative DNA damage and lipid peroxidation in male smokers. J Nutr 2007; 137:2717-22. [PMID: 18029489 DOI: 10.1093/jn/137.12.2717] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Smoking increases the risk of several chronic diseases associated with elevated oxidative stress status. Almonds are a good source of antioxidant nutrients and may diminish smoking-related biomarkers of oxidative stress. We investigated whether almond consumption decreases biomarkers of oxidative stress in young male smokers. We conducted a randomized, crossover clinical trial with 60 healthy male soldiers (18-25 y) who were habitual smokers (5-20 cigarettes/d) and supplemented their diet with 84 g almonds or 120 g pork (to control for calories) daily for 4 wk with a 4-wk washout period between treatment periods. In addition, 30 healthy nonsmoking men were provided the same daily serving of pork as reference comparison. Blood and urine were collected and assessed for biomarkers of oxidative stress. Baseline values of urinary 8-hydroxy-deoxyguanosine (8-OHdG) and malondialdehyde (MDA) and peripheral lymphocyte DNA strand breaks were significantly higher by 185, 64, and 97% in smokers than nonsmokers, whereas activities of plasma superoxide dismutase (SOD), glutathione peroxidase (GPX), and catalase were significantly lower by 15, 10, and 9%, respectively. After the almond intervention, serum alpha-tocopherol, SOD, and GPX increased significantly in smokers by 10, 35, and 16%, respectively and 8-OHdG, MDA, and DNA strand breaks decreased significantly by 28, 34, and 23%. In smokers, after almond supplementation, the concentration of 8-OHdG remained significantly greater than in nonsmokers by 98%. These results suggest almond intake can enhance antioxidant defenses and diminish biomarkers of oxidative stress in smokers.
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Affiliation(s)
- Ning Li
- National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Hakim IA, Harris RB, Brown S, Chow HHS, Wiseman S, Agarwal S, Talbot W. Effect of Increased Tea Consumption on Oxidative DNA Damage among Smokers: A Randomized Controlled Study. J Nutr 2003; 133:3303S-3309S. [PMID: 14519830 DOI: 10.1093/jn/133.10.3303s] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Tea drinking has been associated with decreased occurrence of cancer and heart disease. One potential mechanism for these findings is the strong antioxidant effect of tea polyphenols. A phase II randomized controlled tea intervention trial was designed to study the effect of high consumption (4 cups/d) of decaffeinated green or black tea on oxidative DNA damage as measured by urinary 8-hydroxydeoxyguanosine (8-OHdG) among smokers over a 4-mo period. A total of 143 heavy smokers, aged 18-79 y, were randomized to drink either green or black tea or water. Levels of plasma and urinary catechins and urinary 8-OHdG were measured monthly. A total of 133 of 143 smokers completed the 4-mo intervention. Multiple linear regression models were used to estimate the main effects and interaction effect of green and black tea consumption on creatinine-adjusted urinary 8-OHdG, with or without adjustment for potential confounders. Plasma and urinary levels of catechins rose significantly in the green tea group compared with the other two groups. Assessment of urinary 8-OHdG after adjustment for baseline measurements and other potential confounders revealed a highly significant decrease in urinary 8-OHdG (-31%) after 4 mo of drinking decaffeinated green tea (P = 0.002). No change in urinary 8-OHdG was seen among smokers assigned to the black tea group. These data suggest that regular green tea drinking might protect smokers from oxidative damages and could reduce cancer risk or other diseases caused by free radicals associated with smoking.
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Affiliation(s)
- Iman A Hakim
- Mel and Enid Zuckerman Arizona College of Public Health, University of Arizona, Tucson, AZ 85724, USA.
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Ruiz Flores LE, Madrigal-Bujaidar E, Salazar M, Chamorro G. Anticlastogenic effect of Spirulina maxima extract on the micronuclei induced by maleic hydrazide in Tradescantia. Life Sci 2003; 72:1345-51. [PMID: 12527032 DOI: 10.1016/s0024-3205(02)02412-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The aim of this investigation was to determine if extracts of Spirulina maxima reduce the genotoxic damage induced by maleic hydrazide (MH) using the Tradescantia biosssay. Two types of extracts from the alga were prepared: an aqueous extract with two different concentrations, 100 and 500 mg/ml, and a second one, the extract of a 1% solution of dimethyl sulfoxide (DMSO) which corresponded to 100 mg/ml of the alga. The capacity of MH to induce micronuclei (MN) was initially established by administering 0.005, 0.01, and 0.015 mg/ml of the chemical to the Tradescantia inflorescences, and observing its effect after 24 h.The results of this experiment showed a significant MN increase with the two high concentrations tested, although no dose-response effect was observed. For the anticlastogenic assay, the extracts of Spirulina were applied to the inflorescences alone or immediately before the application of MH (0.01 mg/ml) and the induced MN were observed 24 h later. We found that none of the extracts increased the MN level with respect to the untreated plants; also, that MH more or less doubled the basal micronuclei frequency, and finally, that all tested extracts reduced the genotoxic damage caused by MH. The inhibitory indices obtained for the aqueous extracts (100 and 500 mg/ml) and for the DMSO extract were respectively 59, 85, and 56.3%. These data indicate that Spirulina is an anticlastogenic agent and suggest that it is advisable to extend studies on this matter using other biological models.
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Affiliation(s)
- L Elvia Ruiz Flores
- Centro de Estudios Académicos sobre Contaminación Ambiental, Universidad Autónoma de Querétaro, México, Mexico
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Serra I, Yamamoto M, Calvo A, Cavada G, Báez S, Endoh K, Watanabe H, Tajima K. Association of chili pepper consumption, low socioeconomic status and longstanding gallstones with gallbladder cancer in a Chilean population. Int J Cancer 2002; 102:407-11. [PMID: 12402311 DOI: 10.1002/ijc.10716] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We explored the risk factors for gallbladder cancer and explanations for its sharp and constant incidence increase in Chile since the 1970s. We compared 114 consecutive patients with verified gallbladder cancer, diagnosed 1992-1995, to 114 matched hospital patients with gallstones, using conditional logistic regression analysis. Low education showed a nonsignificant positive relationship with gallbladder cancer [odds ratio (OR) = 2.3, 95% confidence interval (CI) 0.8-6.2], and low socioeconomic level showed a significant relationship (OR = 5.0, 95% CI 1.5-17.3). A very long history of gallstone disease was significantly more prevalent among cases (OR = 11.0, 95% CI 1.4-85.2). Significant red chili pepper consumption was observed in gallbladder cancer patients (OR = 2.9, 95% CI 1.6-5.2). Low intake of both fresh fruit and sugar as soft drinks was associated with gallbladder cancer, with ORs of 6.4 (95% CI 1.4-30.3) and 3.6 (95% CI 1.3-10.1), respectively. Multivariate analysis kept only a very low socioeconomic status and red chili pepper consumption as significant independent risk factors for gallbladder cancer, ORs of 6.3 (95% CI 1.7-23.0) and 3.2 (95% CI 1.7-5.9). Longstanding gallstone cases were removed from the multivariate model because all were in the low and very low socioeconomic groups, reinforcing the association. Patients with gallbladder cancer differed from matched controls by exhibiting lower socioeconomic levels, having a much longer history of gallstone disease and presenting a dietary pattern characterized by high red chili pepper consumption and low fresh fruit intake.
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Affiliation(s)
- Iván Serra
- School of Public Health, University of Chile, Santiago, Chile.
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Amstad PA, Liu H, Ichimiya M, Berezesky IK, Trump BF, Buhimschi IA, Gutierrez PL. BCL-2 is involved in preventing oxidant-induced cell death and in decreasing oxygen radical production. Redox Rep 2002; 6:351-62. [PMID: 11865975 DOI: 10.1179/135100001101536535] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
It has been hypothesized that programmed cell death is mediated, in part, through the formation of free radicals via oxidative pathways. Furthermore, it has been proposed that BCL-2 acts to inhibit cell death by interfering with the production of oxygen-derived free radicals induced by a wide variety of stimuli. In order to examine the antioxidant function of BCL-2, we transfected mouse epidermal cells JB6 clone 41 with the expression vector pD5-Neo-BCL-2 and studied the effect of BCL-2 overexpression on oxidant-induced cell death and on the production of reactive oxygen species. Compared to Neo control cells, BCL-2-expressing cells are more resistant to the killing and growth retardation induced by hydrogen peroxide, superoxide, or by the oxygen radical-generating quinone-containing compounds menadione, diaziquone and adriamycin. The latter compounds generate reactive oxygen species during bioreductive metabolism. In addition, the exposed cells die by necrosis rather than apoptosis. Hydroxyl radical levels generated by the quinone-containing agents were low in BCL-2-expressing JB6 cells compared to control Neo cells. BCL-2, however, does not change the activities of the major cellular antioxidant enzymes superoxide dismutase, catalase or glutathione peroxidase. On the other hand, the glutathione concentrations increased in BCL-2 overexpressing cells after oxidative challenge, while the opposite was true for control cells. Thus, our results suggest that BCL-2 inhibition of oxidant-induced cell death is mediated, at least in part, through an antioxidant pathway, and that this pathway involves glutathione.
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Affiliation(s)
- P A Amstad
- Department of Pathology, University of Maryland School of Medicine, Baltimore 21201, USA
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Wedekind KJ, Zicker S, Lowry S, Paetau-Robinson I. Antioxidant status of adult beagles is affected by dietary antioxidant intake. J Nutr 2002; 132:1658S-60S. [PMID: 12042484 DOI: 10.1093/jn/132.6.1658s] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Xu Y. Perspectives on the 21st century development of functional foods: bridging Chinese medicated diet and functional foods. Int J Food Sci Technol 2001. [DOI: 10.1046/j.1365-2621.2001.t01-1-00461.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kurowska EM, Spence JD, Jordan J, Wetmore S, Freeman DJ, Piché LA, Serratore P. HDL-cholesterol-raising effect of orange juice in subjects with hypercholesterolemia. Am J Clin Nutr 2000; 72:1095-100. [PMID: 11063434 DOI: 10.1093/ajcn/72.5.1095] [Citation(s) in RCA: 189] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Orange juice-a rich source of vitamin C, folate, and flavonoids such as hesperidin-induces hypocholesterolemic responses in animals. OBJECTIVE We determined whether orange juice beneficially altered blood lipids in subjects with moderate hypercholesterolemia. DESIGN The sample consisted of 16 healthy men and 9 healthy women with elevated plasma total and LDL-cholesterol and normal plasma triacylglycerol concentrations. Participants incorporated 1, 2, or 3 cups (250 mL each) of orange juice sequentially into their diets, each dose over a period of 4 wk. This was followed by a 5-wk washout period. Plasma lipid, folate, homocyst(e)ine, and vitamin C (a compliance marker) concentrations were measured at baseline, after each treatment, and after the washout period. RESULTS Consumption of 750 mL but not of 250 or 500 mL orange juice daily increased HDL-cholesterol concentrations by 21% (P: < 0.001), triacylglycerol concentrations by 30% (from 1.56 +/- 0.72 to 2.03 +/- 0.91 mmol/L; P: < 0.02), and folate concentrations by 18% (P: < 0.01); decreased the LDL-HDL cholesterol ratio by 16% (P: < 0.005); and did not affect homocyst(e)ine concentrations. Plasma vitamin C concentrations increased significantly during each dietary period (2.1, 3.1, and 3.8 times, respectively). CONCLUSIONS Orange juice (750 mL/d) improved blood lipid profiles in hypercholesterolemic subjects, confirming recommendations to consume >/=5-10 servings of fruit and vegetables daily.
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Affiliation(s)
- E M Kurowska
- Departments of Biochemistry, University of Western Ontario, London, Canada.
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Abstract
The nutritional health and well-being of humans are entirely dependent on plant foods either directly or indirectly when plants are consumed by animals. Plant foods provide almost all essential vitamins and minerals and a number of other health-promoting phytochemicals. Because micronutrient concentrations are often low in staple crops, research is under way to understand and manipulate synthesis of micronutrients in order to improve crop nutritional quality. Genome sequencing projects are providing novel approaches for identifying plant biosynthetic genes of nutritional importance. The term "nutritional genomics" is used to describe work at the interface of plant biochemistry, genomics, and human nutrition.
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Affiliation(s)
- D DellaPenna
- Department of Biochemistry/MS200, University of Nevada, Reno, NV 89557, USA.
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