Abstract
Background/Objectives:
Multi-nutrient insufficiencies as a consequence of nutritional and economic factors are common in India and other developing countries. We have examined the impact of multi-nutrient insufficiency on markers of one carbon (1C) metabolism in the blood, and response to a methionine load in clinically healthy young women.
Subjects/Methods:
Young women from Pune, India (n=10) and Cleveland, USA (n=13) were studied. Blood samples were obtained in the basal state and following an oral methionine load (50 mg/kg of body weight in orange juice). Plasma concentrations of vitamin B12, folate and B6 were measured in the basal state. The effect of methionine load on the levels of methionine, total homocysteine, cysteine, glutathione and amino acids was examined.
Results:
Indian women were significantly shorter and lighter compared with the American women and had lower plasma concentration of vitamins B12, folate and B6, essential amino acids and glutathione, but higher concentration of total homocysteine. The homocysteine response to methionine load was higher in Indian women. The plasma concentrations of glycine and serine increased in the Indian women after methionine (in juice) load. A significant negative correlation between plasma B6 and homocysteine (r= −0.70), and plasma folate and glycine and serine levels were observed in the Indian group (P<0.05) but not in the American group.
Conclusions:
Multi-nutrient insufficiency in the Indian women caused unique changes in markers of whole body protein and 1C metabolism. These data would be useful in developing nutrient intervention strategies.
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Acknowledgements
We are grateful to the study participants for taking part in this study. We thank Dr KJ Coyaji, Medical Director of the KEM Hospital and Dr VS Padbidri, Director Research for providing research facilities. We thank Mrs PC Yajnik for administrative support. This work was supported in part by the National Institutes of Health grants, R21 HD073880 (to SCK), a Clinical and Translational Science Award RR024989 to Case Western Reserve University and Genomic and lifestyle predictors of foetal outcome relevant to diabetes and obesity and their relevance to prevention strategies in South Asian peoples (GIFTS), FP7-HEALTH-2011-two-stage/EC-GA no 278917.
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Katre, P., Joshi, S., Bhat, D. et al. Effect of multi-nutrient insufficiency on markers of one carbon metabolism in young women: response to a methionine load. Eur J Clin Nutr 70, 687–693 (2016). https://doi.org/10.1038/ejcn.2015.155
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DOI: https://doi.org/10.1038/ejcn.2015.155