The ABCG5 polymorphism contributes to individual responses to dietary cholesterol and carotenoids in eggs - PubMed (original) (raw)
Randomized Controlled Trial
. 2006 May;136(5):1161-5.
doi: 10.1093/jn/136.5.1161.
Affiliations
- PMID: 16614398
- DOI: 10.1093/jn/136.5.1161
Free article
Randomized Controlled Trial
The ABCG5 polymorphism contributes to individual responses to dietary cholesterol and carotenoids in eggs
Kristin L Herron et al. J Nutr. 2006 May.
Free article
Abstract
The ATP binding cassette G5 (ABCG5) polymorphisms have been postulated to play a role in the response to dietary cholesterol. The objective of this study was to examine the contribution of the ABCG5 polymorphism on the plasma response to consumption of cholesterol and carotenoids from eggs. For this purpose, genotyping was conducted for 40 men and 51 premenopausal women who were randomly assigned to consume an egg (EGG, 640 mg/d additional dietary cholesterol and 600 microg lutein+ zeaxanthin) or placebo (SUB, 0 mg/d cholesterol, 0 microg lutein + zeaxanthin) diet for 30 d. The two arms of the dietary intervention were separated by a 3-wk washout period. Plasma concentrations of total cholesterol, LDL cholesterol (LDL-C), and HDL cholesterol were determined. Because eggs are an excellent source of lutein and zeaxanthin, the plasma levels of these carotenoids were also measured in a subset of subjects to determine whether the response to carotenoid intake was similar to that seen for dietary cholesterol and to evaluate the contribution of ABCG5 polymorphism to both responses. Individuals possessing the C/C genotype experienced a greater increase in both LDL-C (P < 0.05) and a trend for lutein (P = 0.08) during the EGG period compared with those individuals with the C/G (heterozygote) or G/G genotypes (homozygotes). These results, although obtained from a small number of subjects, suggest that the ABCG5 polymorphism may play a role in the plasma response to dietary cholesterol and carotenoids.
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