title: Effects of resveratrol on lymphocyte proliferation and cytokine release.
abstract: Resveratrol, synthesized in dietary plants and contained in wine, has been reported to play a beneficial role in certain cardiovascular regulatory mechanisms and to inhibit carcinogenesis by activating immune and inflammatory responses and apoptosis. The object of this study was to elucidate the "in vitro" effects of different concentrations of resveratrol (10(-4), 10(-5), and 10(-7) M) on human peripheral blood mononuclear cell (PBMC) proliferation and cytokine release. Spontaneous PBMC proliferation was unaffected by resveratrol, while the compound at 10(-4) M inhibited (69%) the PHA-stimulated PBMC proliferation. The proliferation stimulation index (ie, the ratio of PHA-stimulated PBMC proliferation/spontaneous PBMC proliferation) of cultures containing 10(-4) M resveratrol was very low in relation to the control, while the proliferation stimulation index values at 10(-5) and 10(-7) M were similar and slightly higher (without statistical significance), respectively. At 10(-4) M, resveratrol strongly inhibited PHA-stimulated IFN-gamma and TNF-alpha release from PBMC, but it did not cause inhibition at 10(-5) or 10(-7) M. The concomitant immune effects of resveratrol on PBMC proliferation and release of IFN-gamma and TNF-alpha may be explained by an inhibitory effect on transcription factor NF-kappaB. This study suggests that resveratrol, which is typically present in red wine at about 10(-5) M, is unlikely to cause inhibitory immune effects. However, a stimulatory effect of low concentrations of resveratrol on the immune system cannot be excluded.
authors.affiliation: Department of Medicine and Science of Aging, University G. D'Annunzio, Chieti, Italy. boscolo@unich.it
authors.forename: Paolo
authors.initials: P
authors.lastname: Boscolo
authors.forename: Antonella
authors.initials: A
authors.lastname: del Signore
authors.forename: Enrico
authors.initials: E
authors.lastname: Sabbioni
authors.forename: Mario
authors.initials: M
authors.lastname: Di Gioacchino
authors.forename: Luca
authors.initials: L
authors.lastname: Di Giampaolo
authors.forename: Marcella
authors.initials: M
authors.lastname: Reale
authors.forename: Pio
authors.initials: P
authors.lastname: Conti
authors.forename: Roberto
authors.initials: R
authors.lastname: Paganelli
authors.forename: Mario
authors.initials: M
authors.lastname: Giaccio
mesh_terms: D000328:Adult; D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D002455:Cell Division / Q000187:drug effects; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D004338:Drug Combinations; D006801:Humans; D007371:Interferon-gamma / Q000378:metabolism*; D007963:Leukocytes, Mononuclear / Q000187:drug effects* / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D010835:Phytohemagglutinins / Q000494:pharmacology; D000077185:Resveratrol; D013267:Stilbenes / Q000494:pharmacology*; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism*
chemical_list: D000975:Antioxidants; D004338:Drug Combinations; D010835:Phytohemagglutinins; D013267:Stilbenes; D014409:Tumor Necrosis Factor-alpha; D007371:Interferon-gamma; D000077185:Resveratrol