Macrophage Related Chronic Inflammation in Non-Healing Wounds

Meirong Li1,2,3,4, Qian Hou1,2,3, Lingzhi Zhong1,2,3

  • 1Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and 4th Medical Center, PLA General Hospital and PLA Medical College, Beijing, China.

Insights

Chronic wounds involve persistent inflammation due to macrophage dysfunction. This review explores macrophage roles in healing and non-healing wounds, highlighting therapeutic strategies to restore macrophage function for better chronic wound treatment.

Area of Science:

  • Wound healing research
  • Immunology
  • Cell biology

Background:

  • Chronic wounds are characterized by persistent hyper-inflammation.
  • Macrophage malfunction is a key factor contributing to non-healing wounds.
  • Understanding macrophage heterogeneity is crucial for therapeutic development.

Purpose of the Study:

  • To review macrophage origin, heterogeneity, and function in wound healing.
  • To compare macrophage roles in healing versus non-healing chronic wounds.
  • To discuss therapeutic strategies for restoring macrophage function in chronic wounds.

Main Methods:

  • Literature review of macrophage biology in wound healing.
  • Analysis of factors contributing to macrophage dysregulation.
  • Examination of systemic and topical therapeutic interventions.
  • Highlighting multidimensional analysis integrating high-throughput technologies.

Main Results:

  • Macrophages exhibit diverse origins and functions during wound healing.
  • Dysregulated macrophages contribute to chronic inflammation in non-healing wounds.
  • Various intrinsic and extrinsic factors influence macrophage behavior.
  • Multidimensional analysis reveals macrophage diversity and communication.

Conclusions:

  • Restoring macrophage function is a promising therapeutic avenue for chronic wounds.
  • Targeting macrophage dysregulation can address persistent inflammation.
  • Advanced analytical techniques offer insights into macrophage-mediated wound repair.

Related Concept Videos

Inflammation01:38

Inflammation

Overview
56.8K
Phases of Wound Repair01:28

Phases of Wound Repair

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.
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
7.0K
Inflammatory Response I: Vascular and Cellular01:30

Inflammatory Response I: Vascular and Cellular

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,...
13.4K
Inflammatory Response II: Inflammatory Exudate and Tissue Repair01:24

Inflammatory Response II: Inflammatory Exudate and Tissue Repair

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.
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
6.2K
Inflammatory Response01:28

Inflammatory Response

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.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
13.5K
Chronic Pancreatitis I: Introduction01:24

Chronic Pancreatitis I: Introduction

The pancreas, an elongated and flat gland situated behind the stomach, serves a vital function in digesting food and managing blood sugar levels.
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
355