Friday, January 6, 2012

Propolis May Help Treat Asthmatic Children

CAPE, a predominant compound found in propolis, has been identified to possess other important capacities:
 - antiviral (König and Dustmann, 1985)
 - anti-inflammatory (Bankova et al., 1983) 
 - antimetastatic activity against mammary carcinoma (Bašic et al., 1997)
 - anti-bacterial activity on gram-positive & negative micro-organisms (Villanueva et al., 1970, Cizmarik & Matel, 1970, 1973)

The Immunoregulatory Effects of Caffeic Acid Phenethyl Ester on the Cytokine Secretion of Peripheral Blood Mononuclear Cells From Asthmatic Children
Pediatrics and Neonatology, Volume 52, Issue 6, December 2011, Pages 327-331

Asthma is a chronic inflammatory disease of the airways for which current treatments are mainly based on pharmacological interventions, such as glucocorticoid therapy. Our objective was to study the immunoregulatory effects of caffeic acid phenethyl ester (CAPE, a phytochemical synthesized from propolis) on cytokine secretion of peripheral blood mononuclear cells (PBMCs) from asthmatic children.

PBMCs from asthmatic children (5.5 ± 3.3 years old, n = 28) and healthy children (5.6 ± 2.8 years old, n = 23) were co-cultured with CAPE in vitro with and without phorbol-12-myristate-13-acetate-ionomycin.

Our results show that predominant interleukin 4 (IL-4) and interferon-gamma secretion of cultured supernatant were detected in healthy donors compared with asthmatics. In the presence of phorbol-12-myristate-13-acetate-ionomycin, with or without CAPE treatment, the asthmatic children showed significantly decreased levels of IL-10 secretion compared with the healthy controls. However, CAPE significantly decreased IL-10 and interferon-gamma in healthy donors. There was a slight but not statistically significant reduction of IL-4 secretion in CAPE-treated PBMCs compared with untreated control PBMCs from the healthy children. Our data also shows that CAPE significantly enhanced transforming growth factor-beta 1 production from PBMCs from asthmatic children.

The immunoregulatory effects of CAPE on human PBMCs may be through the induction of regulatory T cells, as evidenced by the enhanced transforming growth factor-beta 1 production from PBMCs from asthmatic children in our study.


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