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de Lima-Reis SR, Silva TA, Costa LSA, Volp ACP, Rios-Santos F, Reis ÉM, Bassi-Branco CL. Serum levels of vitamin A, selenium and better dietary total antioxidant capacity are related to lower oxidative DNA damage: a cross-sectional study of individuals at cardiovascular risk. J Nutr Biochem 2022; 107:109070. [PMID: 35644409 DOI: 10.1016/j.jnutbio.2022.109070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 10/22/2021] [Accepted: 05/03/2022] [Indexed: 12/06/2022]
Abstract
The risk for cardiovascular diseases (CVR) has been associated with oxidative DNA damage, but the genetic and environmental factors involved in the antioxidant and DNA repair system contributing to this damage are unknown. The aim was to evaluate the levels of oxidative DNA damage in CVR subjects and how it is related with some genetic and nutritional factors. The cross-sectional study evaluated 136 individuals of both sexes, aged 20-59 years, with at least one cardiovascular risk factor. The global risk score was used to classify individuals at low, intermediate and high cardiovascular risk. The dietary total antioxidant capacity (DTAC) was calculated using table with FRAP values. The oxidative DNA damage was verified by the comet assay. The variants null of Glutathione-S-transferases Mu1 and Theta 1(GSTM1 and GSTT1) and rs25487 of X-Ray Repair Cross Complementing Protein 1 (XRCC1) were analyzed by real-time PCR and PCR-RFLP, respectively. The oxidative DNA damage was higher in patients with intermediate/high CVR than in patients with low CVR (p=0.01). Individuals with GSTT1/GSTM1 null genotypes or arg/gln + gln/gln genotypes of the XRCC1 (rs25487) gene showed similar levels of oxidative DNA damage compared wild genotype. Multivariate regression analysis demonstrated that oxidative DNA damage in individuals with CVR depends on serum levels of vitamin A, selenium and DTAC independently of the other factors [F(6.110)=8.213; p<0.001; R2=0.330]. These findings suggest that nutritional factors such as DTAC, vitamin A and selenium may have a protective effect against oxidative DNA damage in these individuals.
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Affiliation(s)
- Sílvia Regina de Lima-Reis
- Faculty of Nutrition, Federal University of Mato Grosso, Cuiabá, MT, Brazil; Postgraduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, MT, Brazil.
| | - Thamires Aguiar Silva
- Postgraduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, MT, Brazil
| | | | | | - Fabricio Rios-Santos
- Postgraduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, MT, Brazil; Red Latinoamericana de Implementación y Validación de Guías Clínicas Farmacogenómicas (RELIVAF). Programa Iberoamericano de Ciencia y Tecnologia para el Desarrollo (CYTED, Red 219RT0572)
| | - Érica Melo Reis
- Postgraduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, MT, Brazil; Red Latinoamericana de Implementación y Validación de Guías Clínicas Farmacogenómicas (RELIVAF). Programa Iberoamericano de Ciencia y Tecnologia para el Desarrollo (CYTED, Red 219RT0572)
| | - Carmen Lucia Bassi-Branco
- Postgraduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, MT, Brazil; Red Latinoamericana de Implementación y Validación de Guías Clínicas Farmacogenómicas (RELIVAF). Programa Iberoamericano de Ciencia y Tecnologia para el Desarrollo (CYTED, Red 219RT0572)
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