Vitamin A inadequacy in socioeconomically disadvantaged pregnant Iowan women as assessed by the modified relative dose response (MRDR) test.
The vitamin A status of low-income women (n=57) during the third trimester of pregnancy was assessed by use of the modified relative dose response (MRDR) test.
Non-Hispanic White (45), Hispanic (6), Afro-American (5), and Asian (1) women were recruited from public health programs in central Iowa.
Serum retinol, bêta-carotene, alpha-carotene, lycopene, alpha-tocopherol, and cholesterol concentrations were also measured.
Twenty six percent of the study population were found to be in a marginal vitamin A status with MRDR values =0.03, whereas 9% had values =0.06.
The Hispanic and Afro-American groups seemed to be most at risk, with 50% and 40% (respectively) of the MRDR values =0.03 and 33% and 20% (respectively) =0.06.
Carotenoid values were similar to those found in women in other like studies, except for the Afro-American group, which had mean values less than half those of the other groups. alpha-Tocopherol concentrations and alpha-tocopherol/cholesterol ratios of all ethnic groups fell in the normal range.
The somewhat elevated cholesterol levels found in all groups can largely be attributed to pregnancy.
Clearly, this study identifies a portion of the U.S. population at high risk of vitamin A inadequacy.
Mots-clés Pascal : Homme, Femelle, Gestation, Iowa, Etats Unis, Amérique du Nord, Amérique, Rétinol, Etat nutritionnel, Statut socioéconomique, Alimentation, Epidémiologie, Vitamine, Rétinoïde, Caroténoïde
Mots-clés Pascal anglais : Human, Female, Pregnancy, Iowa, United States, North America, America, Retinol, Nutritional status, Socioeconomic status, Feeding, Epidemiology, Vitamin, Retinoids, Carotenoid
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0548432
Code Inist : 002B20G01. Création : 01/03/1996.