title: The Effect of Tomato Juice Consumption on Antioxidant Status in Overweight and Obese Females.
abstract: Tomatoes and their products are the main source of lycopene, a powerful potent antioxidant. Tomato products improve antioxidant defenses and reduce the risk of oxidative stress, at least partly, due to the presence of lycopene. Lycopene, as an antioxidant, induces the upregulation of antioxidant enzymes and reinforces the total enzyme capacity of the human body. Obesity is a chronic condition in which destructive mechanisms increase the reactive oxygen species and attenuation of antioxidant status. We hypothesized that the consumption of a lycopene-rich food would improve the antioxidant defense of women who were overweight or obese. A total of seventy-five overweight or obese female students of the Tehran University of Medical Sciences were enrolled and randomly allocated to one of two groups, intervention (n = 40) or control (n = 35), consuming 330 ml/d of tomato juice or water, respectively, for a 20-day period. At baseline and day 20, total antioxidant capacity and antioxidant enzyme activity (superoxide dismutase, glutathione peroxidase, and catalase) were analyzed using ELISA kits and spectrophotometric methods and then compared between the two groups. Lycopene consumption had no effect on these aforementioned variables. Therefore, it seems that more research with longer duration and more sensitive indicators will be required.
authors.affiliation: a Faculty of Nutrition , Tabriz University of Medical Science , Tabriz , Iran.
authors.forename: Zohre
authors.initials: Z
authors.lastname: Pourahmadi
authors.affiliation: b Nutrition Research Center, Faculty of Nutrition , Tabriz University of Medical Science , Tabriz , Iran.
authors.forename: Soltanali
authors.initials: S
authors.lastname: Mahboob
authors.affiliation: c Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics , Tehran University of Medical Sciences , Tehran , Iran.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Saedisomeolia
authors.affiliation: d Faculty of Physical Education and Sport Sciences , University of Tehran , Tehran , Iran.
authors.forename: Mohammad Taheri
authors.initials: MT
authors.lastname: Reykandeh
mesh_terms: D000328:Adult; D000975:Antioxidants / Q000008:administration & dosage / Q000494:pharmacology*; D001628:Beverages; D002338:Carotenoids / Q000008:administration & dosage / Q000494:pharmacology*; D002374:Catalase / Q000187:drug effects; D019587:Dietary Supplements; D004311:Double-Blind Method; D005260:Female; D005500:Follow-Up Studies; D005979:Glutathione Peroxidase / Q000187:drug effects; D006801:Humans; D007492:Iran; D000077276:Lycopene; D018551:Solanum lycopersicum / Q000737:chemistry*; D009765:Obesity / Q000097:blood / Q000178:diet therapy*; D050177:Overweight / Q000097:blood / Q000178:diet therapy*; D018384:Oxidative Stress / Q000187:drug effects*; D010349:Patient Compliance; D013482:Superoxide Dismutase / Q000187:drug effects; D016896:Treatment Outcome
chemical_list: D000975:Antioxidants; D002338:Carotenoids; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D000077276:Lycopene
keywords: antioxidant enzyme; obese; overweight; tomato