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Clinical Trial Summary

Conjugated linoleic acids (CLAs) comprise a family of linoleic acid (18:2n-6; LA) isomers that are formed by biohydrogenation and oxidation processes in nature. The main form of CLA, cis-9, trans-11-18:2, can be produced directly by bacterial hydrogenation in the rumen or by delta-9 desaturation of the co-product vaccenic acid (trans-11-18:1) in most mammalian tissues including man. The second most abundant isomer of CLA is the trans-10, cis-12-18:2 form. Observations clearly emphasize that differences exist between mammalian species in their response to CLAs with mice being the most sensitive. The majority of studies on body compositional effects (i.e. fat loss, lean gain), on cancer and cardiovascular disease attenuation, on insulin sensitivity and diabetes and on immune function have been conducted with a variety of animal models. Recent studies indicate that some but not all of the effects observed in animals also pertain to human volunteers. Reports of detrimental effects of CLA intake appear to be largely in mice and due mainly to the trans-10, cis-12 isomer. Suggestions of possible deleterious effects in man due to an increase in oxidative lipid products (isoprostanes) with trans-10, cis-12 CLA ingestion require substantiation. Unresponsiveness to antioxidants of these non-enzymatic oxidation products casts some doubt on their physiological relevance. We hypothesized that supplementation with CLA + an antioxidant (vitamin E) in patients with diabetes mellitus may have beneficial effects on glycemic control and insulin sensitivity.


Clinical Trial Description

n/a


Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Supportive Care


Related Conditions & MeSH terms


NCT number NCT01099163
Study type Interventional
Source hahid Beheshti University of Medical Sciences
Contact
Status Completed
Phase N/A
Start date January 2009
Completion date October 2010

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