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Microglial Activation in Human Diabetic Retinopathy
Abstract
OBJECTIVE: To investigate microglial activation in human diabetic retinopathy. METHODS: Paraffin sections from 21 eyes of 13 patients with diabetic background, preproliferative, or proliferative retinopathies and 10 normal eyes of 9 individuals were studied with immunolabeling of microglia with antibodies against HLA-DR antigen, CD45, or CD68. RESULTS: In the healthy human eyes, ramified microglial cells were scattered in the inner retinal layers. In eyes with diabetic retinopathy, the microglia were markedly increased in number and were hypertrophic at different stages of the disease. These cells clustered around the retinal vasculature, especially the dilated veins, microaneurysms, intraretinal hemorrhages, cotton-wool spots, optic nerve, and retinal and vitreal neovascularization. In some retinas with cystoid macular edema, microglia infiltrated the outer retina and subretinal space. Cells in the epiretinal membrane were also labeled with microglial markers. CONCLUSIONS: Microglia were activated at different stages of human diabetic retinopathy and optic neuropathy. Microglial perivasculitis was a prominent feature of the disease process. CLINICAL RELEVANCE: Activated microglia and microglial perivasculitis may play a role in vasculopathy and neuropathy in diabetic retinopathy.
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Cited by
Antonetti, D. A., Klein, R., & Gardner, T. W. (2012) · New England Journal of Medicine · doi:10.1056/nejmra1005073 · Cited by 1,659
Role of Inflammation in Diabetic Retinopathy
Rübsam, A., Parikh, S., & Fort, P. (2018) · International Journal of Molecular Sciences · doi:10.3390/ijms19040942 · Cited by 750
Pharmacokinetic aspects of retinal drug delivery
del Amo, E. M., Rimpelä, A.-K., Heikkinen, E., Kari, O. K., Ramsay, E., Lajunen, T., Schmitt, M., Pelkonen, L., Bhattacharya, M., Richardson, D., et al. (2017) · Progress in Retinal and Eye Research · doi:10.1016/j.preteyeres.2016.12.001 · Cited by 693
Para-Inflammation in the Aging Retina
Xu, H., Chen, M., & Forrester, J. V. (2009) · Progress in Retinal and Eye Research · doi:10.1016/j.preteyeres.2009.06.001 · Cited by 659
Neurodegeneration in the diabetic eye: new insights and therapeutic perspectives
Simó, R., & Hernández, C. (2014) · Trends in Endocrinology & Metabolism · doi:10.1016/j.tem.2013.09.005 · Cited by 490
Metadata
- Authors
- Zeng, H.-Y.
- Venue
- Archives of Ophthalmology
- Publisher
- American Medical Association (AMA)
- Published
- 2008-02-01
- Volume
- 126
- Issue
- 2
- Pages
- 227
- ISSN
- 0003-9950 (ISSN-L)
- OpenAlex
- W2057328170
- Cited by
- 402
- References
- 0
- FWCI
- 9.73
- Type
- journal article
- Language
- en
- Open access
- closed
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