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Serum carotenoid concentrations and their reproducibility in children in Belize
Am J Clin Nutr ; 64(5): 726-30, Nov. 1996.
Artigo em Inglês | MedCarib | ID: med-2489
Biblioteca responsável: JM3.1
Localização: JM3.1; RC620.A1A4
ABSTRACT
Suggestions that carotenoid-containing foods are beneficial in maintaining health have led to several studies of circulating carotenoid concentrations of adults. Because few data are available for children, we report serum carotenoid concentrations of 493 children in Belize. Carotenoid concentrations were determined as part of a survey of vitamin A status of children, most between 65 and 89 mo of age. Reproducibility was tested by collecting a second blood samples 2 wk after the first collection from a subset of children (n = 23) who consumed their habiitual diet with no treatment during the interim. Predominant serum carotenoids were lutein/zeaxanthin and beta-carotene, which accounted for 26 percent and 24 percent of median total carotenoids, respectively. The three provitamin A carotenoids, alpha- and beta-carotene and beta-cryptoaxnthin, constituted 51 percent od median total carotenoid concentrations. Partial correlations of each carotenoid with fasting retinol concentrations indicated that beta-carotene had the highest correlation. Concordance correlation coefficients (rc) for fasting carotenoid concentrati9ons determined 2 wk apart were > or = 0.89 for lycopene, beta-cryptoxanthin, and alpha- and beta-catotene. The rc for lutein/zeaxanthin and total carotenoids was lower, 0.59 and 0.68, respectively, because of higher lutein/zeaxanthin concentrations at the second sampling than at the first. The reproducibility of the concentrations suggest both that individuals have characteristic profiles and that serum carotenoid concentrations can be measured randomly over > or =2 wk without significant bias. (au)
Assuntos
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Coleções: Bases de dados internacionais Base de dados: MedCarib Assunto principal: Carotenoides Limite: Criança / Criança, pré-escolar / Humanos País/Região como assunto: América Central / Belize / Caribe Inglês Idioma: Inglês Revista: Am J Clin Nutr Ano de publicação: 1996 Tipo de documento: Artigo
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Coleções: Bases de dados internacionais Base de dados: MedCarib Assunto principal: Carotenoides Limite: Criança / Criança, pré-escolar / Humanos País/Região como assunto: América Central / Belize / Caribe Inglês Idioma: Inglês Revista: Am J Clin Nutr Ano de publicação: 1996 Tipo de documento: Artigo
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