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J Nat Prod. 2016 Apr 22;79(4):954-60. doi: 10.1021/acs.jnatprod.5b00938. Epub 2016 Mar 3.

Vestitol Isolated from Brazilian Red Propolis Inhibits Neutrophils Migration in the Inflammatory Process: Elucidation of the Mechanism of Action.

Author information

1
Piracicaba Dental School, University of Campinas , Piracicaba, 13414-903 SP, Brazil.
2
Ribeirão Preto Medical School, University of São Paulo , Ribeirão Preto, 14049-900 SP, Brazil.
3
"Luiz de Queiroz" College of Agriculture, University of São Paulo , Piracicaba, 13418-900 SP, Brazil.

Abstract

Vestitol is an isoflavonoid isolated from Brazilian red propolis with potential anti-inflammatory activity. This study investigated the mechanism of action of vestitol on the modulation of neutrophil migration in the inflammatory process. Pre-treatment with vestitol at 1, 3, or 10 mg/kg reduced LPS- or mBSA-induced neutrophil migration and the release of CXCL1/KC and CXCL2/MIP-2 in vivo. Likewise, pre-treatment with vestitol at 1, 3, or 10 μM reduced the levels of CXCL1/KC and CXCL2/MIP-2 in macrophage supernatants in vitro. Moreover, the administration of vestitol (10 mg/kg) reduced leukocyte rolling and adherence in the mesenteric microcirculation of mice. The pre-treatment with vestitol (10 mg/kg) in iNOS(-/-) mice did not block its activity concerning neutrophil migration. With regard to the activity of vestitol on neutrophils isolated from the bone marrow of mice, there was a reduction on the chemotaxis of CXCL2/MIP-2 or LTB4-induced neutrophils and on calcium influx after pre-treatment with the compound at 3 or 10 μM. There was no change in CXCR2 expression by neutrophils treated with vestitol at 10 μM. These findings demonstrate that vestitol is a promising novel anti-inflammatory agent.

PMID:
26938776
DOI:
10.1021/acs.jnatprod.5b00938
[Indexed for MEDLINE]

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