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Related Concept Videos

Special Features of Adaptive Immunity01:20

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Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...
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Fever can be triggered by several factors, including infections, nervous system disorders, certain cancers, blood diseases like leukemia, embolism, thrombosis, heatstroke, dehydration, surgical trauma, crushing injuries, and allergic reactions.
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Related Experiment Video

Updated: May 1, 2026

Inoculating Anopheles gambiae Mosquitoes with Beads to Induce and Measure the Melanization Immune Response
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Fever, immunity, and molecular adaptations.

Jeffrey D Hasday1, Christopher Thompson, Ishwar S Singh

  • 1Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Maryland School of Medicine and the Baltimore V.A. Medical Center, Baltimore, Maryland.

Comprehensive Physiology
|April 3, 2014
PubMed
Summary
This summary is machine-generated.

Fever utilizes conserved heat shock responses to combat infection. While accelerating pathogen clearance, febrile temperatures can also increase tissue injury, impacting inflammatory conditions.

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Area of Science:

  • Physiology
  • Immunology
  • Cell Biology

Background:

  • The heat shock response (HSR) is a fundamental cellular defense against thermal stress.
  • Fever, a regulated increase in body temperature, is an evolved response to infection.
  • Both HSR and fever involve conserved molecular mechanisms.

Purpose of the Study:

  • To review conserved mechanisms regulating fever.
  • To discuss the effects of febrile temperatures on host defense and cell fate.
  • To explore the implications for acute inflammatory conditions.

Main Methods:

  • Review of phylogenetically conserved mechanisms.
  • Analysis of the role of heat shock factor-1 (HSF-1).
  • Discussion of molecular pathways including MAPK cascades and apoptosis.

Main Results:

  • HSF-1 is central to HSR and regulates key inflammatory genes.
  • Febrile temperatures modulate immune responses and apoptosis.
  • Pathogen clearance can be accelerated, but collateral tissue injury may increase.

Conclusions:

  • Fever leverages ancient HSR pathways for host defense.
  • The net impact of fever is context-dependent, influenced by pathology and treatment.
  • Understanding these mechanisms is crucial for managing inflammatory diseases.