Chitosan and its acyl derivatives included in liposomes protect mice against endotoxin shock
Ключевые слова:
endotoxin, chitosan, liposomes, anti-endotoxin effectsАннотация
Anti-endotoxin effects of low molecular weight chitosan and its N-monoacylated derivative in solu-tion and in phospholipid liposomes was studied in mice withendotoxin shock. Preventive ten-fold oral and double intraperitoneal injection of liposomal forms of chitosans reduces the toxic effect of endotoxin (lipo-polysaccharide, LPS) in the mice and significantly increases the survival rate (83-100%) of animals in the experiment. The interaction of chitosan with LPS was shown to modulate significantly the biological activ-ity of LPS. It was shown that LPS in a complex with N-Ac-Ch-LW reduces induction of pro-inflammatory TNF-α in human blood by 40% in comparison with parent LPS, but does not affect the ability of endotoxin to stimulate blood cells to synthesize the pro-inflammatory cytokine IL-6.