Epiretinal membrane inflammatory cell density might reflect the activity of proliferative diabetic retinopathy.

Abstract:

PURPOSE:Diabetic retinopathy (DR) has features of chronic low-grade inflammation. The purpose of our study was to investigate whether the presence of inflammatory cells in fibrovascular membranes (FVMs) from patients with proliferative diabetic retinopathy (PDR) is associated with the activity of PDR and visual acuity improvement after vitreoretinal surgery. METHODS:Forty FVMs from 40 patients with PDR were obtained during vitrectomy, prepared by using the agar sandwich method, and examined using light microscope and immunohistochemistry methods to define the presence and density of inflammatory cells: CD45+ cells (leukocytes), CD4+ cells (T helper lymphocytes), CD8+ cells (T cytotoxic lymphocytes), CD19+ cells (B lymphocytes), and CD14+ cells (monocytes/macrophages). For each FVM, the inflammatory cell density defined as numerical areal density was calculated. The number of vessels was defined as the volume density of vessels. RESULTS:Among 40 patients with PDR, 33 patients had active PDR and 7 quiescent PDR. Significant differences in cell densities for CD4+, CD8+, and CD19+ cells were observed between patients with active and quiescent PDR. B lymphocytes were present in membranes of active PDR only. No correlation was observed between numerical areal density of inflammatory cells and the volume density of vessels. No association was found between visual acuity improvement after surgery and cell densities. CONCLUSIONS:Lymphocyte infiltration of FVMs might be associated with the activity of retinopathy but not with visual acuity improvement after surgery.

authors

Urbančič M,Štunf Š,Milutinović Živin A,Petrovič D,GlobočnikPetrovič M

doi

10.1167/iovs.13-13634

subject

Has Abstract

pub_date

2014-11-25 00:00:00

pages

8576-82

issue

12

eissn

0146-0404

issn

1552-5783

pii

iovs.13-13634

journal_volume

55

pub_type

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