Clin Nutr Res.  2012 Jul;1(1):30-36. 10.7762/cnr.2012.1.1.30.

Daily Manganese Intake Status and Its Relationship with Oxidative Stress Biomarkers under Different Body Mass Index Categories in Korean Adults

Affiliations
  • 1Division of Food Science, Kyungil University, Gyeongsan 712-701, Korea.
  • 2Division of Food Science, Kongju National University, Yesan 340-702, Korea. mkchoi67@kongju.ac.kr

Abstract

Manganese (Mn) is an essential micronutrient for human and plays an important role as a cofactor for several enzymes involving fatty acid synthesis, hepatic gluconeogenesis, and oxidative stresses. Also, Mn intake status has been reported to have beneficial effects in reversing metabolic dysfunction including obesity and nonalcoholic steatosis which is linked to mitochondrial dysfunction and oxidative stresses, however, information on dietary Mn intake in Koreans are limited. Hence we investigated the relationship between dietary Mn intake and antioxidant defense factors in healthy and obese subjects. Total of 333 healthy subjects were recruited in the study and were assigned to one of three study groups: a normal group (18.5-22.9), a overweight group (23-24.9), and a obesity group (>25) according to their body mass index (BMI). We assessed Mn intakes (24-hr recall method) and several indicators for antioxidative defenses such as glutathione (GSH), glutathione peroxidase (GPx) and urinary malonaldehyde (MDA). Results showed that body weight and blood pressure of study subjects were increased in dependent of their BMI (p < 0.01). However dietary Mn intakes and oxidative stress biomarkers (GSH, GPx, and MDA) were not significantly different by groups defined by BMI. In correlation analysis adjusting for age, sex and energy intake, dietary Mn intake of the subjects in different BMI categories were not significantly correlated with GSH, GPx, MDA and showed a weak or no association with these oxidative stress markers. In conclusion dietary Mn intake at least in this study has a little or no influence on markers of oxidative status in both healthy and obese subjects.

Keyword

Manganese; Glutathione; Glutathione peroxidase; Malondialdehyde; Body mass index

MeSH Terms

Adult*
Biomarkers*
Blood Pressure
Body Mass Index*
Body Weight
Energy Intake
Gluconeogenesis
Glutathione
Glutathione Peroxidase
Humans
Malondialdehyde
Manganese*
Micronutrients
Obesity
Overweight
Oxidative Stress*
Glutathione
Glutathione Peroxidase
Malondialdehyde
Manganese
Micronutrients
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