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  • Title: Undernutrition and oxidative stress as risk factors for high blood pressure in older Mexican adults.
    Author: Mendoza-Núñez VM, Sánchez-Rodríguez MA, Correa-Muñoz E.
    Journal: Ann Nutr Metab; 2009; 54(2):119-23. PubMed ID: 19295195.
    Abstract:
    OBJECTIVE: To determine the relationship between undernutrition and oxidative stress as risk factors for high blood pressure (HBP) in older Mexican adults. We carried out a case-control study in a convenience sample of 62 older adults, 60-80 years of age; 32 without HBP (mean age 75.8 +/- 5.1 years) and 30 with HBP (mean age 65.2 +/- 6.8 years). METHODS: We measured serum lipoperoxide (LPO) levels, antioxidant enzymes, total antioxidant activity and lipid profile; in addition, we evaluated the nutritional status with anthropometric measurements, the Mini Nutritional Assessment and food intake frequency. Data were analyzed with Student t and odds ratio (OR) statistical tests. RESULTS: We observed significantly higher LPO levels in subjects with HBP than in normotensive subjects (0.303 +/- 0.10 vs. 0.256 +/- 0.06 micromol/l; p < 0.05). With respect to risk factors for HBP, we found an OR of 12.2 (95% CI 1.9-76.4, p < 0.01) in subjects with high LPO levels (> or = 0.320 micromol/l) and an OR of 5.0 (95% CI 1.1-23.0, p < 0.05) in those with undernutrition. CONCLUSION: Our findings suggest that high LPO levels and undernutrition are significant risk factors for HBP.
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