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Related Concept Videos

Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
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Evolution of New Traits in Microbes

Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
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Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...

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Arbovirus Infections As Screening Tools for the Identification of Viral Immunomodulators and Host Antiviral Factors
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Arbovirus Infections As Screening Tools for the Identification of Viral Immunomodulators and Host Antiviral Factors

Published on: September 13, 2018

Insights into arbovirus evolution and adaptation from experimental studies.

Alexander T Ciota1, Laura D Kramer

  • 1The Arbovirus Laboratories, Wadsworth Center, New York State Department of Health, Slingerlands, NY 12159, USA;

Viruses
|October 14, 2011
PubMed
Summary

Laboratory studies reveal how host-virus interactions drive arthropod-borne virus (arbovirus) evolution. Understanding these selective pressures is crucial for predicting viral expansion and managing public health risks.

Keywords:
arbovirushost cyclingmutant swarm dynamicsviral evolutionviral fitness

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Area of Science:

  • Virology
  • Evolutionary Biology
  • Public Health

Background:

  • Arthropod-borne viruses (arboviruses) pose a significant global health threat, with over 100 species capable of causing human disease.
  • Outbreaks in new regions and persistent endemic viruses like Dengue underscore the need to understand arbovirus evolution.
  • Climate change may exacerbate the expansion and emergence of arboviruses.

Purpose of the Study:

  • To review the role of laboratory passage and experimental infection studies in understanding arbovirus evolution.
  • To explore selective pressures, host-virus interactions, and their impact on viral adaptation and evolution.
  • To bridge experimental findings with theoretical predictions and ecological factors.

Main Methods:

  • Review of existing literature on laboratory-based arbovirus studies.
  • Analysis of experimental infection models and serial laboratory passage experiments.
  • Synthesis of findings related to evolutionary constraints, mutant swarm dynamics, and ecological influences.

Main Results:

  • Laboratory studies provide valuable insights into evolutionary constraints and the dynamics of viral mutant swarms.
  • Experimental findings can be compared with theoretical predictions to refine evolutionary models.
  • Arbovirus ecology significantly influences the composition and evolution of viral populations.

Conclusions:

  • Experimental arbovirus research is essential for understanding adaptation and evolution.
  • Further research should integrate ecological context with laboratory findings to predict viral emergence and host shifts.
  • This knowledge is critical for developing effective public health strategies against arboviruses.