title: Differential cell membrane labilizing effect of adenovirus type 5 and 12 observed during productive and abortive infection.
abstract: Culture fluid of human epitheloid (HEp-2) cells was examined for extracellular lactate dehydrogenase activity as an indicator of cell damage during a 48 h period in which virus replication and changes in cell morphology occurred. Uninfected and adenovirus type 5-infected cells had the same levels of extracellular enzyme activity both before and after the appearance of morphological changes in cells due to virus infection, whereas adenovirus type 12-infected cells showed increased extracellular enzyme activity. Cells infected with either adenovirus type 5 or type 12 had the same total cellular and extracellular lactate dehydrogenase activity. Hydrocortisone, a membrane stabilizing agent, prevented abnormal leakage of lactate dehydrogenase from adenovirus type 12-infected cells, but had no effect on virus replication or total enzyme activity of infected cells. After inoculation of monkey kidney (Vero) cells the yield of progeny adenovirus type 5 virions was greatly reduced and there was no production of adenovirus type 12 virions. The pattern of extracellular lactate dehydrogenase activity of uninfected and adenovirus type 5- and type 12-infected Vero cells was like that with HEp-2 cells. Therefore, production of adenovirus type 12 virions is not necessary for the virus-cell interaction causing cell membrane labilization.
mesh_terms: D000260:Adenoviruses, Human / Q000254:growth & development*; D000818:Animals; D002460:Cell Line; D002462:Cell Membrane / Q000502:physiology*; D003588:Cytopathogenic Effect, Viral; D000882:Haplorhini; D006801:Humans; D006854:Hydrocortisone / Q000494:pharmacology; D007770:L-Lactate Dehydrogenase / Q000378:metabolism; D002679:Pan troglodytes
chemical_list: D007770:L-Lactate Dehydrogenase; D006854:Hydrocortisone