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PADMA‐28, A Tibetan herbal preparation is an inhibitor of inflammatory cytokine production Volume 15, numéro 3, September 2004

Auteurs
Immunology Laboratory for Tumor Diagnosis, Israeli Cytokine Standardization Laboratory and Department of Oral Biology, Faculty of Dental Medicine, Hebrew University ‐ Hadassah Medical Center, Jerusalem, Israel

Background: Previous studies have shown that PADMA‐28, a multicomponent, traditional Tibetan herbal plant preparation possesses a variety of beneficial effects on several experimental models of inflammatory and immune processes, including autoimmune diabetes and autoimmune encephalomyelitis. In humans, PADMA‐28 attenuated the symptoms associated with intermittent claudications in atherosclerotic patients. Objective: To assess the effect of PADMA 28 on the immune system, e.g. cytokine (interleukins) production. Design: Cytokine production by human blood monocytes (derived from12 healthy donors) stimulated in vitro, either by endotoxin (LPS) from Salmonella typhi or by lipoteichoic acid (LTA) from group A Streptococci was modulated by PADMA‐28. Results: The present study showed that an aqueous extract of PADMA‐28 strongly decreased the production of the inflammatory cytokines IL‐1β, IL‐6, IL‐8 and TNF‐α, and more moderately, also decreased the anti‐inflammatory cytokine IL‐10 induced by LPS. However, the LTA ‐ induced IL‐10 production was [not significantly] increased by the low dose PADMA‐28, while not effected at all by the higher dose of PADMA‐28. Conclusions: The data from these finding suggest a possible clinical efficacy of PADMA‐28 either in autoimmune and in inflammatory conditions or in post‐inflammatory sequelae, as previously shown in in vivo and human studies, probably by decreasing inflammatory cytokines.