Isotopic tracer techniques for studying the bioavailability and bioefficacy of dietary carotenoids, particularly beta-carotene, in humans: a review.

Isotopic tracer techniques for studying the bioavailability and bioefficacy of dietary carotenoids, particularly beta-carotene, in humans: a review.
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用于研究人类膳食类胡萝卜素(特别是 β-胡萝卜素)的生物利用度和生物功效的同位素示踪技术:综述。

DOI:
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发表时间:
2003
影响因子:
7.1
通讯作者:
R. V. van Breemen
R. V. van Breemen
中科院分区:
医学1区
文献类型:
--
作者:
M. van Lieshout;C. West;R. V. van Breemen

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维生素 A 缺乏是许多发展中国家的一个严重的健康问题。水果和蔬菜中的维生素A原类胡萝卜素是世界上很大一部分人口维生素A的主要来源。然而,只有当植物性食品的摄入量和维生素A原含量都很高,同时维生素A原的生物功效也很高时,植物性食品的贡献才显着。对于维生素原 A 类胡萝卜素,术语“生物功效”定义为摄入量中被吸收的部分(生物利用度)与在体内转化为视黄醇的部分(生物转化)的乘积。同位素示踪技术可以满足对人类膳食类胡萝卜素的生物利用度、生物转化率和生物功效进行精确估计的需要。使用此类技术将能够正确评估以食物为基础的消除维生素 A 缺乏症的方法。此外,如果已知类胡萝卜素的生物利用度,则可以更好地了解其假定的抗氧化能力。在这里,我们讨论如何应用示踪技术来获得可靠且有代表性的数据。提供了与这些技术相关的各个方面的逐步讨论,包括研究设计、同位素示踪剂的选择、给药方案、样品收集、样品化学分析和数据分析。
Vitamin A deficiency is a serious health problem in many developing countries. Provitamin A carotenoids in fruit and vegetables are the major source of vitamin A for a large proportion of the world's population. However, the contribution of plant foods is substantial only when both the consumption and provitamin A content of such food is high and, at the same time, the bioefficacy of the provitamin A is high. With respect to provitamin A carotenoids, the term bioefficacy is defined as the product of the fraction of the ingested amount that is absorbed (bioavailability) and the fraction of that which is converted to retinol in the body (bioconversion). Isotopic tracer techniques can meet the need for accurate and precise estimates of the bioavailability, bioconversion, and bioefficacy of dietary carotenoids in humans. Use of such techniques will enable proper evaluation of food-based approaches to eliminating vitamin A deficiency. In addition, the putative antioxidant capacities of carotenoids can be better understood if their bioavailability is known. Here, we discuss how tracer techniques can be applied to obtain reliable and representative data. A step-by-step discussion of aspects related to these techniques is provided, including study design, choice of isotopic tracers, dosing regimen, collection of samples, chemical analysis of samples, and data analysis.
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发表时间: 2000-06
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影响因子: --
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评估人类肠道中 β-胡萝卜素的滞留。
DOI: 10.1080/07315724.1994.10718424
发表时间: 1994
影响因子: 3.5
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Shiau,A;Mobarhan,S;Stacewicz-Sapuntzakis,M;Benya,R;Liao,Y;Ford,C;Bowen,P;Friedman,H;Frommel,TO
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影响因子: --
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DOI: 10.1093/ajcn/64.2.177
发表时间: 1996
期刊: The American journal of clinical nutrition
影响因子: --
作者:
You,CS;Parker,RS;Goodman,KJ;Swanson,JE;Corso,TN
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DOI: 10.1016/s1043-4526(08)60020-0
发表时间: 1996
期刊: Advances in food and nutrition research.
影响因子: --
作者:
Swanson,JE;Wang,YY;Goodman,KJ;Parker,RS
通讯作者: Parker,RS