title: [Suppressive action of the influenza virus on the bone marrow stem cells of mice].
abstract: The effect of pathogenic and noninfectious influenza viruses with different surface antigens on colony-forming stem cells of (CBA X C57BL/6)F1 mice was studied. Bone marrow cells were infected with A/PR8/34 (H1N1)/A/Krasnodar/101/59 (H2N2) viruses, a recombinant A/PK-6-3 (H2N1) strain thereof, A/Khabarovsk/933/77 (H1N1) strain; then they were inoculated intravenously to irradiated (820 rad) syngeneic recipients, and colony-forming units (CFU) were determined in the spleens 9 days after injection. Inoculation of bone marrow cells (2 X 10(5) per mouse) to the irradiated recipients immediately after mixing with a live A/Krasnodar virus heated at 56 degrees C, live A/PK-6-3, and A/Khabarovsk viruses resulted in suppression of formation of CFU and marked atrophy of the recipients' spleens. There was no suppression after the use in these experiments of the pathogenic A/PR/8/34 strain. Inhibition of CFU production in the spleen was observed after inoculation of the recipients with bone marrow cells incubated for 1 hour at 37 degrees C with A/PR/8/34, A/Krasnodar/101/59 viruses and the recombinant strain. Possible mechanisms of the suppressive effect of influenza A virus on CFU production in mice are discussed.
authors.forename: V F
authors.initials: VF
authors.lastname: Semenkov
authors.forename: V F
authors.initials: VF
authors.lastname: Lavrov
authors.forename: L P
authors.initials: LP
authors.lastname: Khodakova
mesh_terms: D000818:Animals; D001853:Bone Marrow / Q000276:immunology* / Q000528:radiation effects; D016026:Bone Marrow Transplantation; D002452:Cell Count; D003114:Colony-Forming Units Assay; D005260:Female; D018380:Hematopoietic Stem Cell Transplantation; D006412:Hematopoietic Stem Cells / Q000276:immunology* / Q000528:radiation effects; D006358:Hot Temperature; D007108:Immune Tolerance; D009980:Influenza A virus / Q000276:immunology* / Q000472:pathogenicity / Q000528:radiation effects; D051379:Mice; D008810:Mice, Inbred C57BL; D008808:Mice, Inbred CBA; D014775:Virus Activation / Q000528:radiation effects
vernacular_title: Supressivbnoe deĭstvie virusa grippa na stvolovye kletki kostnogo mozga mysheĭ.