title: Phytoglycoprotein (150 kDa) isolated from Solanum nigrum Linne has a preventive effect on dextran sodium sulfate-induced colitis in A/J mouse.
abstract: The purpose of this study was to investigate the preventive effect of glycoprotein (SNL glycoprotein, 150 kDa) isolated from Solanum nigrum Linne fruits on dextran sulfate sodium (DSS, 3%)-induced colitis in A/J mice. To determine the physiological change by SNL glycoprotein, we first evaluated nitric oxide production, lactate dehydrogenase release and thiobarbituric acid reactive substances formation in the mice serum. After that, we tested the activity of inflammation-related signals such as transcriptional factor [nuclear factor-kappa B (NF-kappaB) and activator protein-1 (AP-1)], inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) in the mice colon tissues. Our results showed that SNL glycoprotein has a dose-dependent inhibitory effect on nitric oxide production, lactate dehydrogenase release, and thiobarbituric acid reactive substances formation. In the inflammation-related signal, our finding showed that SNL glycoprotein (20 mg kg(-1)) has a suppressive effect on activities of NF-kappaB (p50) and AP-1 (c-Jun), and regulates the expression of iNOS and COX-2 in the downstream of signal pathway. Taken together, the results in this study indicated that SNL glycoprotein has potential for prevention of colitis caused by DSS in A/J mice.
authors.affiliation: Molecular Biochemistry Laboratory, Biotechnology Research Institute and Center for the Control of Animal Hazards Using Biotechnology (BK21), Chonnam National University, 300 Yongbong-Dong, Gwangju City, 500-757, South Korea.
authors.forename: Heon-Yeong
authors.initials: HY
authors.lastname: Joo
authors.forename: Kwang
authors.initials: K
authors.lastname: Lim
authors.forename: Kye-Taek
authors.initials: KT
authors.lastname: Lim
mesh_terms: D000818:Animals; D003092:Colitis / Q000139:chemically induced / Q000188:drug therapy / Q000517:prevention & control; D019610:Cytoprotection / Q000187:drug effects; D016264:Dextran Sulfate / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D006023:Glycoproteins / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D051379:Mice; D008805:Mice, Inbred A; D008970:Molecular Weight; D008517:Phytotherapy; D010940:Plant Proteins / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use; D032324:Solanum nigrum / Q000737:chemistry*
chemical_list: D006023:Glycoproteins; D010940:Plant Proteins; D016264:Dextran Sulfate