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Different aspects of virus persistence (review)

N Barnabishvili1, T Topuria, P Gamtsemlidze

  • 1Tbilisi State Medical University, Institute Medical Biotechnology, Tbilisi, Georgia.

Georgian Medical News
|August 9, 2012
PubMed

Insights

Virus persistence, a key evolutionary strategy, allows viruses like HIV to evade immune responses by infecting host cells. This chronic infection often results from immune system imbalance and viral adaptation.

Area of Science:

  • Virology
  • Immunology
  • Evolutionary Biology

Background:

  • Virus persistence is an evolved trait crucial for viral species survival.
  • Numerous viruses, including measles, hepatitis B/C, herpes, retroviruses, and HIV, exhibit persistence in humans.
  • Viral persistence involves evading host immune system control, prioritizing infected cell survival over free virus elimination.

Purpose of the Study:

  • To review the multifaceted aspects of virus persistence in the human host.
  • To explore the evolutionary significance and mechanisms of viral persistence.
  • To understand the interplay between host and virus in establishing chronic infections.

Main Methods:

  • Literature review of viral persistence mechanisms.
  • Analysis of viral strategies for immune evasion.
  • Examination of host-pathogen interactions in chronic viral infections.

Main Results:

  • Viral persistence relies on escaping immune surveillance and maintaining infected cells.
  • Host permissiveness and viral pathogenicity influence infection outcomes.
  • Immune system imbalance, particularly virus-induced changes in immunocompetent cells, plays a critical role in chronic persistence.

Conclusions:

  • Virus persistence is a complex evolutionary adaptation essential for viral survival.
  • Effective viral persistence hinges on immune evasion and host cell manipulation.
  • Understanding immune system disbalance is key to comprehending chronic viral infections.

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