Polyunsaturated fatty acids suppress human peripheral blood lymphocyte proliferation and interleukin-2 production - PubMed (original) (raw)

. 1992 Jun;82(6):695-700.

doi: 10.1042/cs0820695.

Affiliations

• PMID: 1320551
• DOI: 10.1042/cs0820695

Polyunsaturated fatty acids suppress human peripheral blood lymphocyte proliferation and interleukin-2 production

P C Calder et al. Clin Sci (Lond). 1992 Jun.

Abstract

1. The effects of a variety of fatty acids on human peripheral blood lymphocyte proliferation stimulated by concanavalin A or purified protein derivative of Mycobacterium tuberculosis were studied. 2. The proliferative response to concanavalin A was inhibited by all of the polyunsaturated fatty acids tested (eicosapentaenoate, arachidonate, docosahexaenoate, linoleate and alpha-linolenate) and also by the saturated fatty acid, stearate. The greatest inhibition of proliferation (approximately 85%) was caused by eicosapentaenoate. 3. The proliferative response to the purified protein derivative of Mycobacterium tuberculosis was inhibited by all of the polyunsaturated fatty acids tested, except alpha-linolenate, and also by stearate. The greatest inhibition of proliferation (approximately 75%) was caused by eicosapentaenoate. 4. The pattern of inhibition of proliferation by fatty acids was similar to that previously reported for rat lymphocytes with one exception: oleate did not inhibit human lymphocyte proliferation. 5. The proliferation of T-lymphocytes is dependent upon their ability to synthesize and secrete the cytokine, interleukin-2. In the presence of mitogen the concentration of interleukin-2 in the culture medium increased markedly above that in the medium of non-stimulated cells. 6. All polyunsaturated fatty acids tested caused a decrease in the concentration of interleukin-2; the greatest decrease (approximately 90%) was caused by eicosapentaenoate. 7. There was a good correlation between lymphocyte proliferation in the presence of fatty acids and interleukin-2 concentration. However, stearate did not decrease the interleukin-2 concentration but did inhibit lymphocyte proliferation.(ABSTRACT TRUNCATED AT 250 WORDS)

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