title: Protective effect of Misgurnus anguillicaudatus polysaccharide on immunological liver injury in mice.
abstract: The modulation influence of Misgurnus anguillicaudatus polysaccharide on the expression of nitric oxide synthase (NOS), B cell lymphoma/leukemia-2 (Bcl-2, hepatocyte apoptosis inhibitor) and Bcl-2 associated X protein (Bax, hepatocyte apoptosis promoter) in mice's liver with immunological hepatic injury was studied. Immunological hepatic injury was induced by lipopolysaccharide (LPS ip, 0.2 mg kg(-1)) in bacillus calmette-guerin (BCG ip, 0.15 g kg(-1), once, before 7 days) primed mice. The mice were treated with M. anguillicaudatus polysaccharides (MAP) at doses of 30 mg kg(-1), 60 mg kg(-1), respectively, ig, once a day, and sacrificed on the 8th day after ip LPS for 4 h. In comparison to the normal mice, the nitric oxide production, serum alanine aminotransferase (sALT) and serum glutathione s-transferase (sGST) levels were increased significantly, iNOS and Bax expression were up-regulated by 16.5 times (P<0.001 vs. normal animal group) and 0.43 times (P<0.05, vs. normal animal group) respectively, cNOS expression was not apparently changed, and no Bcl-2 expression was found in immunological hepatic injury mice. The M. anguillicaudatus polysaccharide (30 mg kg(-1)) could reduce sALT, sGST and nitric oxide production levels (vs. BCG-LPS model control group) by 25.1%, 42.6% and 17.8% respectively, and the expression of iNOS and Bax was decreased (vs. BCG-LPS model control group) by 80.3% and 38.4%, while the expression of cNOS and Bcl-2 increased (vs. BCG-LPS model control group) by 58.7% and 352%, respectively.
authors.affiliation: Faculty of Life Science, Northwestern Polytechnical University, Xi'an 710072, PR China. qinchg@nwpu.edu.cn
authors.forename: Chuanguang
authors.initials: C
authors.lastname: Qin
authors.forename: Yan
authors.initials: Y
authors.lastname: Ding
authors.forename: Kaixun
authors.initials: K
authors.lastname: Huang
authors.forename: Huibi
authors.initials: H
authors.lastname: Xu
mesh_terms: D000410:Alanine Transaminase / Q000097:blood; D000818:Animals; D017209:Apoptosis / Q000187:drug effects; D001219:Aspartate Aminotransferases / Q000097:blood; D001794:Blood Pressure / Q000187:drug effects; D003531:Cypriniformes / Q000378:metabolism*; D019254:Genes, bcl-2 / Q000235:genetics; D019693:Hepatitis, Autoimmune / Q000473:pathology / Q000517:prevention & control*; D022781:Hepatocytes / Q000187:drug effects; D008099:Liver / Q000201:enzymology / Q000473:pathology; D008297:Male; D051379:Mice; D009093:Mucus / Q000737:chemistry; D009163:Mycobacterium bovis / Q000276:immunology; D009569:Nitric Oxide / Q000502:physiology; D019001:Nitric Oxide Synthase / Q000096:biosynthesis / Q000235:genetics; D011134:Polysaccharides / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D012867:Skin / Q000737:chemistry; D051028:bcl-2-Associated X Protein / Q000096:biosynthesis / Q000235:genetics
chemical_list: D011134:Polysaccharides; D051028:bcl-2-Associated X Protein; D009569:Nitric Oxide; D019001:Nitric Oxide Synthase; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase