title: Protective effects of recombinant human granulocyte macrophage colony stimulating factor on H1N1 influenza virus-induced pneumonia in mice.
abstract: Protective effects of recombinant human granulocyte macrophage colony stimulating factor (rHuGM-CSF) on H1N1 influenza virus infection was studied in vivo and in vitro. Mice were infected with H1N1 influenza A viruses and rHuGM-CSF at doses of 0.34, 0.67, and 1.34mgkg(-1)d(-1) was administrated for 7days before the mice were infected with influenza virus and continued for a further 3days. Compared with control mice, rHuGM-CSF was demonstrated to increase the survival rate of the infected mice by 50.0%, 55.6%, and 80.0% and increased the mean survival days by 25.7%, 30.0%, and 46.8%, respectively. Histopathological study of the lungs in pneumonia mice found that pre-treatment with rHuGM-CSF significantly ameliorated lung injury induced by influenza virus infection. In vitro study demonstrated that when rHuGM-CSF were co-incubated with peripheral blood mononuclear cells (PBMCs), the PBMCs culture supernatant induced a dose-dependent reduction of virus-induced cytopathic effect (CPE) in Madin-Darby canine kidney (MDCK) cells in vitro. These results suggested that rHuGM-CSF might be an effective and potential protection for H1N1 influenza virus-induced pneumonia.
authors.affiliation: Department of Biosynthesis, School of Pharmacy, Fudan University, Shanghai, China.
authors.forename: Hai
authors.initials: H
authors.lastname: Huang
authors.forename: Hong
authors.initials: H
authors.lastname: Li
authors.forename: Pei
authors.initials: P
authors.lastname: Zhou
authors.forename: Dianwen
authors.initials: D
authors.lastname: Ju
mesh_terms: D000818:Animals; D005260:Female; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000627:therapeutic use*; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007963:Leukocytes, Mononuclear / Q000821:virology; D008168:Lung / Q000473:pathology / Q000821:virology; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D009976:Orthomyxoviridae Infections / Q000188:drug therapy* / Q000401:mortality / Q000473:pathology; D011024:Pneumonia, Viral / Q000188:drug therapy* / Q000401:mortality / Q000473:pathology; D011994:Recombinant Proteins
chemical_list: D011994:Recombinant Proteins; D016178:Granulocyte-Macrophage Colony-Stimulating Factor