T-cell differentiation and CD56+ levels in polypoidal choroidal vasculopathy and neovascular age-related macular degeneration

Research output: Contribution to journalArticle

Abstract

Polypoidal choroidal vasculopathy (PCV) and neovascular age-related macular degeneration (AMD) are prevalent age-related diseases characterized by exudative changes in the macula. Although they share anatomical and clinical similarities, they are also distinctly characterized by their own features, e.g. vascular abnormalities in PCV and drusen-mediated progression in neovascular AMD. PCV remains etiologically uncharacterized, and ongoing discussion is whether PCV and neovascular AMD share the same etiology or constitute two substantially different diseases. In this study, we investigated T-cell differentiation and aging profile in human patients with PCV, patients with neovascular AMD, and age-matched healthy control individuals. Fresh venous blood was prepared for flow cytometry to investigate CD4+ and CD8+ T-cell differentiation (naïve, central memory, effector memory, effector memory CD45ra+), loss of differentiation markers CD27 and CD28, and expression of aging marker CD56. Patients with PCV were similar to the healthy controls in all aspects. In patients with neovascular AMD we found significantly accelerated T-cell differentiation (more CD28-CD27- cells) and aging (more CD56+ cells) in the CD8+ T-cell compartment. These findings suggest that PCV and neovascular AMD are etiologically different in terms of T cell immunity, and that neovascular AMD is associated with T-cell immunosenescence.

Details

Authors
  • Yousif Subhi
  • Marie Krogh Nielsen
  • Christopher Rue Molbech
  • Akio Oishi
  • Amardeep Singh
  • Mogens Holst Nissen
  • Torben Lykke Sørensen
External organisations
  • University of Copenhagen
  • Skåne University Hospital
  • Zealand University Hospital
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Ophthalmology

Keywords

  • Aged, Aged, 80 and over, Biomarkers/blood, CD28 Antigens/blood, CD4-Positive T-Lymphocytes/immunology, CD56 Antigen/blood, CD8-Positive T-Lymphocytes/immunology, Case-Control Studies, Cell Differentiation, Cellular Senescence, Choroidal Neovascularization/blood, Female, Humans, Immunosenescence, Macular Degeneration/blood, Male, Neovascularization, Pathologic, Prospective Studies, Tumor Necrosis Factor Receptor Superfamily, Member 7/blood
Original languageEnglish
Pages (from-to)2436-2452
JournalAging
Volume9
Issue number11
Publication statusPublished - 2017 Nov 20
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes