The damage-response framework of microbial pathogenesis
Arturo Casadevall1, Liise-anne Pirofski
1Departments of Medicine (Division of Infectious Diseases) and Microbiology & Immunology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, New York 10461, USA. casadeva@aecom.yu.edu
Abstract:
The late twentieth century witnessed the emergence of numerous infectious diseases that are caused by microorganisms that rarely cause disease in normal, healthy immunocompetent hosts. The emergence of these diseases shows that the existing concepts of pathogenicity and virulence do not take into account the fact that both the microorganism and the host contribute to microbial pathogenesis. To address this impediment to studies of host-microorganism interactions, we propose a new theoretical approach to understanding microbial pathogenesis, known as the 'damage-response' framework.
Insights
Emerging infectious diseases highlight that both microbes and hosts impact pathogenesis. A new
Area of Science:
- Microbiology and Immunology
- Infectious Disease Epidemiology
Background:
- The late 20th century saw an increase in infectious diseases caused by opportunistic microorganisms.
- Existing models of pathogenicity and virulence inadequately explain these emerging diseases.
- Current concepts overlook the crucial interplay between host and microorganism in disease development.
Purpose of the Study:
- To propose a novel theoretical framework for understanding microbial pathogenesis.
- To address limitations in current concepts of host-microorganism interactions.
- To provide a new perspective on the factors contributing to disease emergence.
Main Methods:
- Theoretical approach development.
- Conceptual analysis of host-microorganism dynamics.
- Literature review on emerging infectious diseases and pathogenesis.
Main Results:
- Identified limitations in traditional pathogenicity and virulence concepts.
- Proposed the 'damage-response' framework as a new theoretical model.
- Highlighted the dual contribution of microorganism and host to pathogenesis.
Conclusions:
- The 'damage-response' framework offers a more comprehensive understanding of microbial pathogenesis.
- This approach is essential for studying host-microorganism interactions and emerging diseases.
- Rethinking pathogenesis is crucial for addressing future infectious disease challenges.
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