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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Polysaccharide-rich fraction of Agaricus brasiliensis enhances the candidacidal activity of murine macrophages

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Author(s):
Martins, Priscila Raquel [1, 2] ; Gameiro, Maria Carolina [1, 3] ; Castoldi, Lindsey [1, 2] ; Romagnoli, Graziela Gorete [1, 2] ; Lopes, Fabiane Catanho [1, 2] ; Pinto, Andrea Vanessa Ferreira da Silva [1, 2] ; Loyola, Wagner [4] ; Kaneno, Ramon [1, 2]
Total Authors: 8
Affiliation:
[1] Univ Estadual Paulista, Dept Microbiol & Imunol, Inst Biociencias, BR-18618000 Botucatu, SP - Brazil
[2] UNESP, Dept Patol, Fac Med, Bandeirantes, PR - Brazil
[3] UNESP, Dept Doencas Trop & Diagnost Imagem, Fac Med, Bandeirantes, PR - Brazil
[4] Univ Bandeirantes, Bandeirantes, PR - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Memórias do Instituto Oswaldo Cruz; v. 103, n. 3, p. 244-250, MAY 2008.
Web of Science Citations: 8
Abstract

A polysaccharide-rich fraction (ATF) of medicinal mushroom Agaricus brasiliensis was evaluated on the candidacidal activity, H(2)O(2) and nitric oxide (NO) production, and expression of mannose receptors by murine peritoneal macrophages. Mice received three intraperitoneal (i.p.) injections of ATF and after 48 h their peritoneal resident macrophages were assayed against Candida albicans yeast forms. The treatment increased fungicidal activity and it was associated with higher levels of H(2)O(2), whereas NO production was not affected. We also found that the treatment enhances mannose receptor expression by peritoneal macrophages, which are involved in the attachment and phagocytosis of non-opsonized microorganisms. Treatment of animals with ATF was able to enhance the clearance of C. albicans during the first 6 h after the experimental i.p. infection. Our results suggest that this extract can increase host resistance against some infectious agents through the stimulation of microbicidal activity of macrophages. (AU)

FAPESP's process: 98/07726-5 - Edible and medicinal mushrooms: cultivation technology, biochemical characterisation and protection effects of Agaricus blazei Murrill (sun mushroom) and Lentinula edodes (Berk.) Pegler (shiitake) mushrooms
Grantee:Augusto Ferreira da Eira
Support type: Research Projects - Thematic Grants