Related Experiment Video
Updated: Jul 13, 2025
Three-dimensional Confocal Analysis of Microglia/macrophage Markers of Polarization in Experimental Brain Injury
Published on: September 4, 2013
Macrophage/microglia polarization for the treatment of diabetic retinopathy
Yujia Yao1,2, Jiajun Li1,2, Yunfan Zhou1,2
1Department of Ophthalmology, The Affiliated Eye Hospital of Nanjing Medical University, Nanjing, China.
Abstract:
Macrophages/microglia are immune system defense and homeostatic cells that develop from bone marrow progenitor cells. According to the different phenotypes and immune responses of macrophages (Th1 and Th2), the two primary categories of polarized macrophages/microglia are those conventionally activated (M1) and alternatively activated (M2). Macrophage/microglial polarization is a key regulating factor in the development of inflammatory disorders, cancers, metabolic disturbances, and neural degeneration. Macrophage/microglial polarization is involved in inflammation, oxidative stress, pathological angiogenesis, and tissue healing processes in ocular diseases, particularly in diabetic retinopathy (DR). The functional phenotypes of macrophages/microglia affect disease progression and prognosis, and thus regulate the polarization or functional phenotype of microglia at different DR stages, which may offer new concepts for individualized therapy of DR. This review summarizes the involvement of macrophage/microglia polarization in physiological situations and in the pathological process of DR, and discusses the promising role of polarization in personalized treatment of DR.
Insights
Macrophages and microglia polarization (M1/M2) impacts diseases like diabetic retinopathy (DR). Understanding these immune cell roles offers new avenues for personalized DR treatments.
Area of Science:
- Immunology
- Neuroscience
- Ophthalmology
Background:
- Macrophages and microglia are crucial immune cells originating from bone marrow progenitors.
- These cells exhibit distinct polarized phenotypes: conventionally activated (M1) and alternatively activated (M2).
- Macrophage/microglial polarization is central to inflammatory disorders, cancers, metabolic issues, and neurodegeneration.
Purpose of the Study:
- To review the role of macrophage/microglial polarization in physiological conditions.
- To examine the involvement of macrophage/microglial polarization in the pathology of diabetic retinopathy (DR).
- To discuss the potential of targeting macrophage/microglial polarization for personalized DR therapy.
Main Methods:
- Literature review focusing on macrophage/microglial polarization.
- Analysis of the impact of M1 and M2 phenotypes in DR pathogenesis.
- Exploration of therapeutic strategies targeting immune cell polarization in DR.
Main Results:
- Macrophage/microglial polarization significantly influences inflammation, oxidative stress, angiogenesis, and tissue repair in DR.
- Distinct functional phenotypes of these cells correlate with DR progression and prognosis.
- Modulating macrophage/microglial polarization presents a promising approach for DR management.
Conclusions:
- Macrophage/microglial polarization is a critical factor in the development and progression of diabetic retinopathy.
- Understanding the dynamic polarization states of these immune cells is key to developing targeted therapies.
- Personalized treatment strategies for DR may involve regulating macrophage/microglial functional phenotypes.
