Albers R, van der Wielen RPJ, Brink EJ, Hendriks HFJ, Dorovska-Taran VN, Mohede ICM. Effects of cis-9, trans-11 and trans-10, cis-12 conjugated linoleic acid (CLA) isomers on immune function in healthy men.
Eur J Clin Nutr 2003;
57:595-603. [PMID:
12700622 DOI:
10.1038/sj.ejcn.1601585]
[Citation(s) in RCA: 143] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2002] [Revised: 06/10/2002] [Accepted: 06/26/2002] [Indexed: 11/08/2022]
Abstract
OBJECTIVES
To study the effects of two different mixtures of the main conjugated linoleic acid (CLA) isomers cis-9, trans-11 CLA and trans-10, cis-12 CLA on human immune function.
DESIGN
Double-blind, randomized, parallel, reference-controlled intervention study.
SUBJECTS AND INTERVENTION
Seventy-one healthy males aged 31-69 y received one of the following treatments: (1). mixture of 50% c9,t11 CLA and 50% t10,c12 CLA isomers (CLA 50:50); (2). mixture of 80% c9,t11 CLA and 20% t10,c12 CLA isomers (CLA 80:20); and (3). sunflower oil fatty acids (reference). The treatments were given as supplements in softgel capsules providing a total of 1.7 g (c9,t11+t10,c12) CLA fatty acids (50:50) or 1.6 g (c9,t11+t10,c12) CLA glycerides (80:20) per day in treatment groups for 12 weeks.
RESULTS
Almost twice as many subjects reached protective antibody levels to hepatitis B when consuming CLA 50:50 fatty acids (15/24, 62%) compared with subjects consuming the reference substance (7/21, 33%, P=0.075). In subjects consuming CLA 80:20 glycerides this was 8/22 (36%). Other aspects of immune function, ie DTH responses, NK cell activity, lymphocyte proliferation and production of TNF-alpha, IL1-beta, IL6, IFN-gamma, IL2, IL4, and PGE(2), were not affected.
CONCLUSION
This is the first study that suggests that CLA may beneficially affect the initiation of a specific response to a hepatitis B vaccination. This was seen in the CLA 50:50, but not in the CLA 80:20 group.
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