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EPA Method 1615. Measurement of Enterovirus and Norovirus Occurrence in Water by Culture and RT-qPCR. Part III. Virus Detection by RT-qPCR
Published on: January 16, 2016
Enteroviruses: A Gut-Wrenching Game of Entry, Detection, and Evasion
Alexandra I Wells1,2, Carolyn B Coyne3,4,5
1Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA. ALW214@pitt.edu.
Insights
Enteroviruses cause significant human illness, especially in children. This review details how these viruses infect the body and evade the immune system.
Area of Science:
- Virology
- Immunology
- Infectious Diseases
Background:
- Enteroviruses are a significant cause of human disease, particularly in neonates and young children.
- Infections can manifest as febrile illness, meningitis, hepatitis, and acute flaccid myelitis.
- The enterovirus genus includes poliovirus, coxsackieviruses, echoviruses, enterovirus 71, and enterovirus D68.
Purpose of the Study:
- To review the mechanisms of enterovirus infection in the gastrointestinal tract.
- To explain how cells detect enterovirus infections.
- To outline strategies enteroviruses employ to evade immune detection.
Main Methods:
- This is a review article, synthesizing existing research on enterovirus pathogenesis and host-cell interactions.
- The review discusses viral entry, replication, and host immune responses.
- It focuses on the interplay between enteroviruses and the innate immune system.
Main Results:
- Enteroviruses primarily infect via the fecal-oral route, targeting the gastrointestinal epithelium.
- Respiratory transmission is also a significant route for some enteroviruses, like enterovirus D68.
- Enteroviruses possess sophisticated strategies to evade or disrupt host innate immune detection pathways.
Conclusions:
- Understanding enterovirus infection pathways and immune evasion mechanisms is crucial for developing effective countermeasures.
- Further research into host-pathogen interactions can inform therapeutic strategies against enterovirus diseases.
- The co-evolution of enteroviruses and humans highlights the dynamic nature of viral pathogenesis and host defense.
Abstract:
Enteroviruses are a major source of human disease, particularly in neonates and young children where infections can range from acute, self-limited febrile illness to meningitis, endocarditis, hepatitis, and acute flaccid myelitis. The enterovirus genus includes poliovirus, coxsackieviruses, echoviruses, enterovirus 71, and enterovirus D68. Enteroviruses primarily infect by the fecal-oral route and target the gastrointestinal epithelium early during their life cycles. In addition, spread via the respiratory tract is possible and some enteroviruses such as enterovirus D68 are preferentially spread via this route. Once internalized, enteroviruses are detected by intracellular proteins that recognize common viral features and trigger antiviral innate immune signaling. However, co-evolution of enteroviruses with humans has allowed them to develop strategies to evade detection or disrupt signaling. In this review, we will discuss how enteroviruses infect the gastrointestinal tract, the mechanisms by which cells detect enterovirus infections, and the strategies enteroviruses use to escape this detection.
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