Abstract:
:The activities of dectin-1 and mannose receptors on phagocytosis of Candida albicans and the production of TNF-α by macrophages from mice pretreated for 3 days with extract of Artocarpus intergrifolia seeds (jack extract), Artin M or jacalin were studied. Macrophages from these mice were coincubated with C. albicans CR15 (yeast), in the presence of mannose (50mM) plus mannan (100 μg) or laminarin (1mg). Phagocytosis was significantly enhanced to 52% in macrophages from mice pretreated intraperitoneally for 3 days with jack extract (500 μg/250 μl PBS). Reduction in phagocytosis from 52% to 34% (P<0.05) occurred in the presence of mannose receptor inhibitors and from 52% to 16% (P<0.01) in the presence of dectin-1 inhibitor laminarin, whereas only 20% of control macrophages phagocytosed blastoconidia. Similar results were verified for pretreatment of mice with Artin M (2.5 μg/250 μl PBS), but not for jacalin (25 μg/250 μl PBS). Macrophages from mice pretreated 3 days previously with jack extract or Artin M and then coincubated for 2h with C. albicans presented a significant increase in TNF-α production, correlating with significantly less transition of yeast to filamentous forms compared to pretreatment with jacalin. These results suggest that Artin M, but not jacalin present in jack extract significantly increased TNF-α production and the activity of mannose and dectin-1 receptors.
journal_name
Int Immunopharmacoljournal_title
International immunopharmacologyauthors
Loyola W,Custodio LA,Felipe I,Conchon-Costa I,Carvalho PG,Quirino GF,Silva LF,Gaziri LCdoi
10.1016/j.intimp.2011.12.010subject
Has Abstractpub_date
2012-02-01 00:00:00pages
378-83issue
2eissn
1567-5769issn
1878-1705pii
S1567-5769(11)00472-3journal_volume
12pub_type
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