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Virally induced alterations in cellular permeability: a basis of cellular and physiological damage?
Abstract:
Virally induced permeability changes occur when haemolytic paramyxoviruses are added to cells; similar (though not identical) changes take place during infection of cells with viruses from several families (including paramyxoviruses). These changes occur in intact, viable cells, and precede subsequent cytopathic effects, to which they are likely to contribute. There is accumulating evidence to suggest that virally induced permeability changes may also underlie the physiological and clinical consequences of viral infection in certain situations.
Insights
Viral infections can alter cell membrane permeability, a process that precedes cell damage and may explain some clinical outcomes of viral diseases. These permeability changes are observed in viable cells during viral replication.
Area of Science:
- Virology
- Cell Biology
- Membrane Transport
Background:
- Viral infections are known to cause significant cellular damage.
- The precise mechanisms by which viruses impact cellular function are still under investigation.
- Paramyxoviruses and other viral families have been implicated in altering cellular properties.
Purpose of the Study:
- To investigate virally induced changes in cell membrane permeability.
- To determine the role of these permeability changes in viral pathogenesis.
- To explore the link between viral infection and physiological consequences.
Main Methods:
- Addition of haemolytic paramyxoviruses to cell cultures.
- Observation of permeability changes in intact, viable cells.
- Correlation of permeability alterations with subsequent cytopathic effects.
Main Results:
- Virally induced permeability changes were observed upon addition of haemolytic paramyxoviruses.
- Similar, though not identical, permeability alterations occurred with viruses from multiple families.
- These changes were detected in intact, viable cells before the onset of cytopathic effects.
Conclusions:
- Virally induced permeability changes are a significant early event in viral infections.
- These alterations likely contribute to the development of cytopathic effects.
- Evidence suggests these permeability changes may underlie physiological and clinical manifestations of viral infections.