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Inflammation01:38

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Acute Inflammation III: Local and Systemic Effects01:25

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Acute inflammation produces a coordinated set of local and systemic changes that limit injury, eliminate pathogens, and initiate repair. These responses arise within minutes of infection, trauma, or chemical insult and are driven by vascular alterations and leukocyte-derived mediators. When the stimulus resolves, the reaction typically abates within days.Local EffectsAt the site of injury, arteriolar vasodilation increases blood flow, resulting in redness and warmth. Simultaneously, increased...
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Pseudofracture: An Acute Peripheral Tissue Trauma Model
10:08

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Published on: April 18, 2011

Trauma equals danger--damage control by the immune system.

Veit M Stoecklein1, Akinori Osuka, James A Lederer

  • 1Department of Surgery, Brigham and Women’s Hospital/Harvard Medical School, Boston, MA, USA.

Journal of Leukocyte Biology
|June 2, 2012
PubMed
Summary

Traumatic injuries disrupt immune homeostasis, increasing infection risk. Understanding this complex response is key to developing strategies for restoring immune balance.

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Area of Science:

  • Immunology
  • Trauma Response
  • Host Defense

Background:

  • Traumatic injuries trigger a complex host response disrupting immune homeostasis.
  • This immune dysregulation increases susceptibility to opportunistic infections and inflammatory complications.
  • Individual variables like age, sex, and genetics influence trauma response variability.

Purpose of the Study:

  • To review current knowledge on how traumatic injuries impact immune system phenotype and function.
  • To discuss proposed mechanisms, including endogenous danger signals, triggering unique injury responses.
  • To propose strategies for redirecting injury responses to restore immune homeostasis.

Main Methods:

  • Literature review of current research on trauma and the immune system.
  • Analysis of immune cells and pathways involved in trauma response.
  • Synthesis of existing data to propose new therapeutic strategies.

Main Results:

  • Traumatic injuries induce a unique host response involving alarmins, damage-associated molecular patterns (DAMPs), self-antigens, and cytokines.
  • Immune system phenotype and function are significantly altered following trauma.
  • The variability in response highlights the complexity of studying trauma's immunological impact.

Conclusions:

  • Trauma induces a distinct immune response, potentially driven by endogenous danger signals.
  • Further research is needed to fully elucidate the mechanisms of trauma-induced immune alterations.
  • Strategies aimed at redirecting these responses hold promise for restoring immune homeostasis and improving patient outcomes.