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Related Concept Videos

Inflammation01:38

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Inflammatory Response01:28

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An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
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Inflammatory Response I: Vascular and Cellular01:30

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The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...
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Inflammatory Response II: Inflammatory Exudate and Tissue Repair01:24

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The immune system's inflammatory response destroys the invading pathogen, permitting the tissue to heal. The changes during the cellular and vascular stages allow exudate formation at the site of inflammation. The inflammatory exudate released from the wound has high protein content and a specific gravity above 1.020.
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Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among resident skin cells, blood mononuclear cells, extracellular matrix, growth factors, and cytokines to complete the healing cascade.
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Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
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Protocol to Create Chronic Wounds in Diabetic Mice
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Acute Inflammation in Tissue Healing.

Amro M Soliman1, Daniel R Barreda1,2

  • 1Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada.

International Journal of Molecular Sciences
|January 8, 2023
PubMed
Summary
This summary is machine-generated.

Acute inflammation is crucial for healing, involving immune cells and molecular regulators. Disruptions in this process can lead to chronic, non-healing injuries, highlighting the need for balanced inflammatory responses.

Keywords:
chronic injuriesinflammationinflammatory mediatorsmacrophagesneutrophilstissue repair

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Area of Science:

  • Immunology
  • Cell Biology
  • Wound Healing Research

Background:

  • Established evolutionary links exist between acute inflammation and successful tissue repair.
  • Innate immune responses are vital for clearing pathogens and initiating repair.
  • A complex network of regulators balances antimicrobial defense with tissue repair functions.

Purpose of the Study:

  • To review the roles of key cellular and molecular components in acute inflammation.
  • To elucidate the transition from inflammation to tissue repair mechanisms.
  • To discuss the consequences of disrupted inflammatory responses in chronic injuries.

Main Methods:

  • Literature review of established scientific findings.
  • Synthesis of information on cellular and molecular regulators.
  • Analysis of the balance between protection and tissue damage in inflammation.

Main Results:

  • Acute inflammation involves critical cellular and molecular players.
  • A coordinated transition from inflammatory to reparative phases is essential for healing.
  • Imbalances in inflammation can result in chronic, non-healing conditions.

Conclusions:

  • Effective wound healing relies on a well-regulated acute inflammatory process.
  • Understanding inflammatory mediators is key to addressing chronic wounds.
  • Maintaining a balance in inflammation is critical for successful tissue regeneration.