PMID- 2543070 OWN - NLM STAT- MEDLINE DCOM- 19890706 LR - 20220317 IS - 0036-8075 (Print) IS - 0036-8075 (Linking) VI - 244 IP - 4907 DP - 1989 May 26 TI - Oxygen radicals in influenza-induced pathogenesis and treatment with pyran polymer-conjugated SOD. PG - 974-6 AB - The pathogenicity of influenza virus infection in the mice involves, at least in part, overreaction of the immune responses of the host rather than a direct effect of virus multiplication. Xanthine oxidase, which is responsible for the generation of oxygen free radicals, was elevated in serum and lung tissue of mice infected with influenza virus. To test the theory that oxygen-free radicals are involved in pathogenesis, free radicals were removed by injecting superoxide dismutase (SOD), a specific superoxide radical scavenger, which was conjugated with a pyran copolymer. The conjugate protected mice against a potentially lethal influenza virus infection if administered 5 to 8 days after infection. These findings indicate that oxygen radicals are important in the pathogenesis of influenza virus infection, and that a polymer-conjugated SOD has therapeutic potential for this virus infection and other diseases associated with free radicals. FAU - Oda, T AU - Oda T AD - Department of Microbiology, Kumamoto University Medical School, Japan. FAU - Akaike, T AU - Akaike T FAU - Hamamoto, T AU - Hamamoto T FAU - Suzuki, F AU - Suzuki F FAU - Hirano, T AU - Hirano T FAU - Maeda, H AU - Maeda H LA - eng PT - Journal Article PL - United States TA - Science JT - Science (New York, N.Y.) JID - 0404511 RN - 0 (Free Radicals) RN - 0 (Polymers) RN - 11062-77-4 (Superoxides) RN - 27100-68-1 (Pyran Copolymer) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EC 1.17.3.2 (Xanthine Oxidase) RN - S88TT14065 (Oxygen) SB - IM MH - Animals MH - Bronchoalveolar Lavage Fluid MH - Free Radicals MH - Lung/enzymology/pathology MH - Mice MH - Orthomyxoviridae Infections/drug therapy/*metabolism/pathology MH - Oxygen/*metabolism MH - Phagocytes/metabolism/pathology MH - *Polymers/administration & dosage/therapeutic use MH - *Pyran Copolymer/administration & dosage/therapeutic use MH - Superoxide Dismutase/administration & dosage/pharmacokinetics/*therapeutic use MH - Superoxides/metabolism MH - Xanthine Oxidase/blood/metabolism EDAT- 1989/05/26 00:00 MHDA- 1989/05/26 00:01 CRDT- 1989/05/26 00:00 PHST- 1989/05/26 00:00 [pubmed] PHST- 1989/05/26 00:01 [medline] PHST- 1989/05/26 00:00 [entrez] AID - 10.1126/science.2543070 [doi] PST - ppublish SO - Science. 1989 May 26;244(4907):974-6. doi: 10.1126/science.2543070.