Apoptosis seems to play an important role in the pathogenic profile of bovine herpesvirus 1 (BHV-1) infection. Nitric oxide (NO) is also important as a signal molecule. In this study, apoptosis was selectively induced in HEp-2 cells in the early stage [1-3 h postinfection (PI)] of BHV-1 multiplication, and this apoptotic process was realised through the caspase-8, and partially through the caspase-3, pathway. BHV-1 infection inhibited staurosporine- (SS-) induced apoptosis only if the SS was added at 6 h PI. The results of this study showed that the 'NO-apoptosis' relation was realised through the caspase-8 pathway ('outer membrane receptor' pathway) at a later stage of infection in apoptosis induced by BHV-1 + SS. Our previous report (Yazici et al., 2004) and this study together showed that BHV-1 might induce and inhibit cell-type-specific pathways of apoptosis.
Yazici, Z., Baskin, Y., Baskin, H., Gecer, O., Bahar, I. H. and Ozkul, A. (2004): Study of programmed cell death in bovine herpesvirus 1 infected MDBK cells and the possible role of nitric oxide in this process. Acta Vet. Hung. 52, 287-297.
'Study of programmed cell death in bovine herpesvirus 1 infected MDBK cells and the possible role of nitric oxide in this process ' () 52 Acta Vet. Hung. : 287 -297.
Ren, X., Harms, S. J. and Splitter, A. G. (2001): Tyrosine phosphorylation of bovine herpesvirus 1 tegument protein VP22 correlates with the incorporation of VP22 into virions. J. Virol. 75, 9010-9017.
'Tyrosine phosphorylation of bovine herpesvirus 1 tegument protein VP22 correlates with the incorporation of VP22 into virions ' () 75 J. Virol. : 9010 -9017.
Roulston, A., Marcellus, C. R. and Branton, E. P. (1999): Viruses and apoptosis. Annu. Rev. Microbiol. 53, 577-628.
'Viruses and apoptosis ' () 53 Annu. Rev. Microbiol. : 577 -628.
Shacter, E., Williams, J. A., Hinson, R. M., Senturkler, S. and Lee, Y. J. (2000): Oxidative stress interferes with cancer chemotherapy: inhibition of lymphoma cell apoptosis and phagocytosis. Blood 96, 307-313.
'Oxidative stress interferes with cancer chemotherapy: inhibition of lymphoma cell apoptosis and phagocytosis ' () 96 Blood : 307 -313.
Shaw, A. M., Braun, L., Frew, T., Hurley, D. J., Rowland, R. R. R. and Chase, C. C. L. (2000): A role for bovine herpesvirus 1 (BHV-1) glycoprotein E (gE) tyrosine phosphorylation in replication of BHV-1 wild-type virus but not BHV-1 gE deletion mutant virus. Virology 268, 159-166.
'A role for bovine herpesvirus 1 (BHV-1) glycoprotein E (gE) tyrosine phosphorylation in replication of BHV-1 wild-type virus but not BHV-1 gE deletion mutant virus ' () 268 Virology : 159 -166.
Shen, Y. and Shenk, T. E. (1995): Viruses and apoptosis. Curr. Opin. Genet. Dev. 5, 105-111.
'Viruses and apoptosis ' () 5 Curr. Opin. Genet. Dev. : 105 -111.
Teodoro, J. G. and Branton, P. E. (1997): Regulation of apoptosis by viral gene products. J. Virol. 71, 1739-1746.
'Regulation of apoptosis by viral gene products ' () 71 J. Virol. : 1739 -1746..
Wilde, A., Beattie, E. C., Lem, L., Riethof, D. A., Liu, H. S., Mobley, W. C., Soriano, P. and Brodsky, M. F (1999): EGF receptor signaling stimulates SRC kinase phosphorylation of clathrin, influencing clathrin redistribution and EGF uptake. Cell 96, 677-687.
'EGF receptor signaling stimulates SRC kinase phosphorylation of clathrin, influencing clathrin redistribution and EGF uptake ' () 96 Cell : 677 -687.
Aubert, M., O' Toole, J. and Blaho, J. A. (1999): Induction and prevention of apoptosis in human HEp-2 cells by herpes simplex virus type 1. J. Virol. 73, 10359-10370.
'Induction and prevention of apoptosis in human HEp-2 cells by herpes simplex virus type 1 ' () 73 J. Virol. : 10359 -10370.
Baskin, H., Ellerman-Eriksen, S., Lovmand, J. and Mogensen, C. S. (1997): Herpes simplex virus type 2 synergizes with interferon-gamma in the induction of nitric oxide production in mouse macrophages through autocrine secretion of tumour necrosis factor-alpha. J. Gen. Virol. 78, 195-203.
'Herpes simplex virus type 2 synergizes with interferon-gamma in the induction of nitric oxide production in mouse macrophages through autocrine secretion of tumour necrosis factor-alpha ' () 78 J. Gen. Virol. : 195 -203..
Brune, B., Von Knethen, A. and Sandau, K. B. (1998): Nitric oxide and its role in apoptosis. Eur. J. Pharmacol. 351, 261-272.
'Nitric oxide and its role in apoptosis ' () 351 Eur. J. Pharmacol. : 261 -272.
De Martino, L., Marfe, G., Di Stefano, C., Pagnini, U., Florio, S., Crispino, L., Iovane, G., Macaluso, M. and Giordano, A. (2003): Interference of bovine herpesvirus 1 (BHV-1) in sorbitol-induced apoptosis. J. Cell. Biochem. 89, 373-380.
'Interference of bovine herpesvirus 1 (BHV-1) in sorbitol-induced apoptosis ' () 89 J. Cell. Biochem. : 373 -380.
Devireddy, L. R. and Jones, C. J. (1999): Activation of caspases and p53 by bovine herpesvirus 1 infection results in programmed cell death and efficient virus release. J. Virol. 73, 3778-3788.
'Activation of caspases and p53 by bovine herpesvirus 1 infection results in programmed cell death and efficient virus release ' () 73 J. Virol. : 3778 -3788.
Fenech, M., Chang, W. P., Kirsch-Volders, M., Holland, N., Bonassi, S. and Zeiger, E. (2003): HUMN Project: detailed description of the scoring criteria for the cytokinesis-block micronucleus assay using isolated human lymphocyte culture. Mutat. Res. 534, 65-75.
'HUMN Project: detailed description of the scoring criteria for the cytokinesis-block micronucleus assay using isolated human lymphocyte culture ' () 534 Mutat. Res. : 65 -75..
Galvan, V., Brandimarti, R., Munger, J. and Roizman, B. (2000): Bcl-2 blocks a caspase-dependent pathway of apoptosis activated by herpes simplex virus 1 infection in HEp-2 cells. J. Virol. 74, 1931-1938.
'Bcl-2 blocks a caspase-dependent pathway of apoptosis activated by herpes simplex virus 1 infection in HEp-2 cells ' () 74 J. Virol. : 1931 -1938..
Henderson, G., Perng, G. C., Nesburn, A. B., Wechsler, S. L. and Jones, D. (2004): The latencyrelated gene encoded by bovine herpesvirus 1 can suppress caspase 3 and caspase 9 cleavage during productive infection. J. Neurovirol. 10, 64-70.
'The latencyrelated gene encoded by bovine herpesvirus 1 can suppress caspase 3 and caspase 9 cleavage during productive infection ' () 10 J. Neurovirol. : 64 -70.
Jones, C. (1998): Alphaherpesvirus latency: its role in disease and survival of the virus in nature. Adv. Virus Res. 51, 81-133.
'Alphaherpesvirus latency: its role in disease and survival of the virus in nature ' () 51 Adv. Virus Res. : 81 -133.
Reed, L. J. and Muench, H. (1938): A simple method of estimating fifty percent endpoints. Am. J. Hyg. 27, 493-497.
() 27 A simple method of estimating fifty percent endpoints. : 493 -497.