Abstract:
:During infection with herpes simplex virus type 1 (HSV-1) the activity of tyrosine hydroxylase (TH) in PC12 pheochromocytoma cells was initially depressed reaching a nadir at 6 hours post-inoculation, but recovered rapidly with a return to baseline activity by 8 to 9 hours post-inoculation. Subsequently, TH activity again fell with a second more variable rise in activity occurring at 24 hours post-inoculation. Studies with metabolic inhibitors and 2 temperature-sensitive viral mutants indicated that these alterations of TH activity were dissociated from morphological cytopathology and likely required expression of "late" viral gene products. Immunotitration using anti-TH antibody suggested that early depression of TH activity resulted principally from loss of enzyme protein rather than simple enzyme inactivation, and that reconstitution of activity at 9 hours was related to augmented enzyme synthesis. These observations illustrate the complexity of perturbed cellular metabolism during HSV-1 infection and suggest involvement of two unexpected processes: alteration of a specialized cell function as a result of viral genes expressed late in the replicative cycle, and augmented synthesis of a cell-coded gene product during the course of infection.
journal_name
Arch Viroljournal_title
Archives of virologyauthors
Rubenstein R,Price RW,Joh Tdoi
10.1007/BF01310965subject
Has Abstractpub_date
1985-01-01 00:00:00pages
65-82issue
1-2eissn
0304-8608issn
1432-8798journal_volume
83pub_type
杂志文章abstract::Hepatitis E virus (HEV) is an unclassified, plus-strand RNA virus whose genome contains three open reading frames (ORFs). ORF1, the 5' proximal ORF of HEV, encodes nonstructural proteins involved in RNA replication which share homology with the products of the corresponding ORF of members of the alphavirus-like superf...
journal_title:Archives of virology
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journal_title:Archives of virology
pub_type: 杂志文章
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更新日期:1996-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:Archives of virology
pub_type: 杂志文章
doi:10.1007/BF01317902
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1007/s00705-014-1991-9
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pub_type: 杂志文章
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更新日期:1994-01-01 00:00:00
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pub_type: 杂志文章
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