Equol status and blood lipid profile in hyperlipidemia after consumption of diets containing soy foods  

Oleh:

Wong, Julia M.W. ; Kendall, Cyril WC ; Marchie, Augustine ; Zhen, Liu

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The American Journal of Clinical Nutrition vol. 95 no. 03 (Mar. 2012), page 564-571.
Topik: Hypercholesterolemic Men; Low-Carbohydrate Diet; Cardiovascular Disease Risk; Hyperlipidemia; LDL Cholesterol Lipoproteins; High Density Lipoprotein Cholesterol; Heart Disease Risk Factors; Carbohydrates; Diet; Fermentation; Food; Isoflavones; Postmenopause; Urinary Tract; Apolipoprotein a-I; Colon; Lipids; Fasting Lipid Profile; Parallel Study Prebiotics
Fulltext: A07 v95 n3 p564 kelik2022.pdf (229.26KB)

Ketersediaan

Perpustakaan FK Nomor Panggil: A07.K.2012.01 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Background: Recent analyses have challenged the effectiveness of soy foods as part of a cardiovascular risk reduction diet. Objective: The objective of the study was to show whether equol status determines the effectiveness of soy foods to lower LDL cholesterol and to raise HDL cholesterol. Design: Eighty-five hypercholesterolemic men and postmenopausal women (42 men, 43 women) participated in 1 of 3 studies that represented a range of soy interventions and that followed the same general protocol at a Canadian university hospital research center. Soy foods were provided for 1 mo at doses of 30–52 g/d for the 3 studies as follows: 1) soy foods with either high-normal (73 mg/d) or low (10 mg/d) isoflavones, 2) soy foods with or without a prebiotic to enhance colonic fermentation (10 g polyfructans/d), or 3) soy foods with a low-carbohydrate diet (26% carbohydrate). Studies 1 and 2 were randomized controlled crossover trials, and study 3 was a parallel study. Results: The separation of the group into equol producers (n = 30) and nonproducers (n = 55) showed similar reductions from baseline in LDL cholesterol (-9.3 ± 2.5% and -11.1 ± 1.6%, respectively; P = 0.834), with preservation of HDL cholesterol and apolipoprotein A-I only in equol producers compared with reductions in nonproducers (HDL cholesterol: +0.9 ± 2.7% compared with -4.3 ± 1.1%, P = 0.006; apolipoprotein A-I: -1.0 ± 1.1% compared with -4.7 ± 1.0%; P = 0.011). The amount of urinary equol excreted did not relate to the changes in blood lipids. Conclusions: Soy foods reduced serum LDL cholesterol equally in both equol producers and nonproducers. However, in equol producers, ~35% of our study population, soy consumption had the added cardiovascular benefit of maintaining higher HDL-cholesterol concentrations than those seen in equol nonproducers.

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