Proliferative vitreoretinopathy membranes. An immunohistochemical study

Ophthalmology. 1989 Jun;96(6):801-10. doi: 10.1016/s0161-6420(89)32818-1.


Proliferative vitreoretinopathy (PVR) is the leading cause of failure after retinal detachment surgery. Therefore, both the extracellular matrix and cellular components of preretinal membranes from 23 eyes with PVR were characterized immunohistochemically. The membrane stroma was composed primarily of types I, II, and III collagen. Laminin and both heparan sulfate proteoglycans and collagens types IV and V were co-distributed in discrete regions within the stroma. Glial and retinal pigment epithelial (RPE) cell populations were identified in these membranes using specific immunohistochemical markers as was a small but significant macrophage population. Double-labeling experiments indicated that RPE cells in these membranes expressed the class II histocompatibility antigen HLA-DR, although neither the RPE monolayer in situ nor cultured RPE cells was HLA-DR positive unless induced by gamma interferon. Only rare isolated vascular endothelial cells were detected in 5 of the 23 membranes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Collagen / immunology
  • Extracellular Matrix / immunology
  • Fluorescent Antibody Technique
  • HLA-DR Antigens / immunology
  • Heparitin Sulfate / immunology
  • Humans
  • Immunoenzyme Techniques
  • Laminin / immunology
  • Membrane Proteins
  • Pigment Epithelium of Eye / cytology
  • Pigment Epithelium of Eye / immunology
  • Retinal Diseases / immunology*
  • Vitrectomy


  • HLA-DR Antigens
  • Laminin
  • Membrane Proteins
  • Collagen
  • Heparitin Sulfate