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The influence of body composition, gonadal steroid status and gender on serum carotenoids and retinol

机译：人体成分，性腺类固醇状态和性别对血清类胡萝卜素和视黄醇的影响

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摘要

The relationships of serum beta-carotene, lutein, zeaxanthin and retinol concentrations with body composition, serum estradiol concentrations, phase of menstrual cycle, use of oral contraceptive agents (OCA's) and gender were examined in 55 subjects taking SO mg supplements of beta-carotene daily for 28 days. Serum samples were collected from all subjects prior to supplementation, 8 hours following a single dose and on day 28 of supplementation. Serum carotenoids and retinol were measured by HPLC and serum estradiol and progesterone were measured by RIA. Baseline serum retinol concentrations were significantly higher (p $<$.01) in females using OCA's than in females not using OCA's. Baseline serum retinol concentrations were also significantly higher (p $<$.005) in males than in females not using OCA's, with the same body composition. Baseline serum beta-carotene concentrations were negatively correlated to percent body fat (r = $-$.5471; p $<$.01) and total body fat (r = $-$.5477; p $<$.01) in females. All groups had significantly higher (p $<$.05) serum beta-carotene concentrations at day-28 compared to initial concentrations. Also, all groups, except the low-body-fat groups, had significantly higher (p $<$.05) serum beta-carotene concentrations at 8-hours following a single dose compared to initial concentrations. These findings identify that the impact of personal characteristics on serum carotenoid and retinol concentrations is minimized when the individual is challenged with high doses of beta-carotene either acutely or chronically.
机译：在55名服用SO补充β-胡萝卜素补充剂的受试者中，研究了55名受试者的血清β-胡萝卜素，叶黄素，玉米黄质和视黄醇浓度与人体成分，血清雌二醇浓度，月经周期阶段，口服避孕药（OCA's）的使用和性别的关系。每天28天。在补充前，单剂后8小时和补充第28天从所有受试者收集血清样品。用HPLC测定血清类胡萝卜素和视黄醇，用RIA测定血清雌二醇和孕酮。使用OCA的女性的基线血清视黄醇浓度显着高于未使用OCA的女性（p $ .0.01）。男性中的血清血清视黄醇浓度也明显高于未使用OCA的女性（具有相同的身体成分）（p <.005）。基线血清β-胡萝卜素浓度与体内脂肪百分比（r = $-$。5471; p $ <$。01）和总脂肪（r = $-$。5477; p $ <$。01）负相关。女性。与初始浓度相比，所有组在第28天的血清β-胡萝卜素浓度均显着较高（p <.0.05）。同样，除低脂脂肪组外，所有组在单次给药后8小时的血清β-胡萝卜素浓度均显着高于初始浓度（p <.0.05）。这些发现表明，当个人受到急性或慢性高剂量的β-胡萝卜素攻击时，个人特征对血清类胡萝卜素和视黄醇浓度的影响最小。

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  • 作者

    Wilson, Thomas Armand.;

  • 作者单位

    University of Rhode Island.;

  • 授予单位 University of Rhode Island.;
  • 学科 Nutrition.;Public health.
  • 学位 Ph.D.
  • 年度 1992
  • 页码 180 p.
  • 总页数 180
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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