Maternal plasma ascorbic acid (vitamin C) and risk of gestational diabetes mellitus


Autoria(s): Zhang, Cuilin; Williams, Michelle A.; Sorensen, Tanya K.; King, Irena B.; Kestin, Mark M.; Thompson, Mary Lou; Leisenring, Wendy M.; Dashow, Edward E.; Luthy, David A.
Data(s)

01/09/2004

Resumo

<b>Background :</b> Antioxidants, particularly vitamin C (ascorbic acid), have the capacity to influence glucose tolerance. Modification of diet could reduce the likelihood of developing gestational diabetes mellitus. <br /><br /><b>Methods :</b> In a prospective cohort study of pregnant women, we studied the association of maternal plasma ascorbic acid concentrations, measured at an average of 13 weeks' gestation, with subsequent risk of gestational diabetes. Maternal plasma ascorbic acid concentrations were determined using automated enzymatic procedures. Dietary vitamin C intake during the periconceptional period and early pregnancy was ascertained using a semiquantitative food frequency questionnaire. We fitted generalized linear models to derive estimates of relative risks and 95% confidence intervals (CIs). <br /><br /><b>Results : </b>Approximately 4% (n = 33) of 755 women who completed pregnancy developed gestational diabetes mellitus. Plasma ascorbic acid concentrations were inversely associated with the risk of gestational diabetes (P for trend = 0.023). After adjusting for maternal age, race, prepregnancy adiposity, parity, family history of type 2 diabetes, and household income, women with plasma ascorbic acid <55.9 micromol/L (lowest quartile) experienced a 3.1-fold increased risk of gestational diabetes (95% CI = 1.0 - 9.7) compared with women whose concentrations were > or = 74.6 micromol/L (upper quartile). Women who consumed <70 mg vitamin C daily experienced a 1.8-fold increased risk of gestational diabetes compared with women who consumed higher amounts (95% CI = 0.8 - 4.4). <br /><br /><b>Conclusions :</b> If confirmed, our results raise the possibility that current efforts to encourage populations to consume diets rich in antioxidants, including vitamin C, could reduce the occurrence of gestational diabetes mellitus.<br />

Identificador

http://hdl.handle.net/10536/DRO/DU:30022154

Idioma(s)

eng

Publicador

Lippincott Williams & Wilkins

Relação

http://dro.deakin.edu.au/eserv/DU:30022154/kestin-maternalplasma-2004.pdf

http://www.jstor.org/stable/20485959

Direitos

2004, Lippincott Williams & Wilkins

Tipo

Journal Article