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Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Int+J+Clin+Exp+Pathol 2015 ; 8 (6): 6214-24 Nephropedia Template TP
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Mannose prevents acute lung injury through mannose receptor pathway and contributes to regulate PPAR? and TGF-?1 level #MMPMID26261498
Xu XL; Zhang P; Shen YH; Li HQ; Wang YH; Lu GH; Zhou JY
Int J Clin Exp Pathol 2015[]; 8 (6): 6214-24 PMID26261498show ga
Mannose has been reported to prevent acute lung injury (ALI), and mannose receptor (MR) has been demonstrated to have a role. The rationale for this study is to characterize the mechanism by which mannose and MR prevent lipopolysaccharide (LPS)-induced ALI. Male ICR mice were pretreated mannose by intravenous injection 5 min before and 3 h after intratracheal instillation of LPS. Pathological changes, proinflammatory mediator, peroxisome proliferator activated receptor gamma (PPAR?), MR, and transforming growth factor ?1 (TGF-?1) levels were determined. The RAW264.7 cells were pretreated with mannose and stimulated with LPS for 3 h. Proinflammatory mediator and TGF-?1 in the culture media, PPAR?, MR, and TGF-?1 expression in RAW 264.7 cells were measured. Mannose markedly attenuated the LPS-induced histological alterations and inhibited the production of proinflammatory mediator in mice and in RAW 264.7 cells. Mannose increased PPAR? and MR expression, and inhibited TGF-?1 stimulated by LPS. Interestingly, competitive inhibition of MR with mannan was associated with elimination of the anti-inflammatory effects of mannose, and reversed effects of mannose of regulation to PPAR? and TGF-?1. MR is important in increasing PPAR? and decreasing TGF-?1 expression and plays a critical role in mannose?s protection against ALI.