Paulina Haas1, Tina Aggermann2, Manfred Nagl3, Kerstin Steindl-Kuscher4, Walter Krugluger5, Susanne Binder6. 1. Ludwig Boltzmann Institute for Retinology and Biomicroscopic Laser Surgery, Rudolf Foundation Clinic, Vienna, Austria; Department of Ophthalmology, Rudolf Foundation Clinic, Vienna, Austria. Electronic address: paulina.haas@wienkav.at. 2. Department of Ophthalmology, Rudolf Foundation Clinic, Vienna, Austria. 3. Karl Landsteiner Institute for Cell Biology and Cell Therapy, Rudolf Foundation Clinic, Vienna, Austria. 4. Ludwig Boltzmann Institute for Retinology and Biomicroscopic Laser Surgery, Rudolf Foundation Clinic, Vienna, Austria. 5. Department of Laboratory Medicine, Social Medical Center East, Vienna, Austria. 6. Ludwig Boltzmann Institute for Retinology and Biomicroscopic Laser Surgery, Rudolf Foundation Clinic, Vienna, Austria; Department of Ophthalmology, Rudolf Foundation Clinic, Vienna, Austria.
Abstract
PURPOSE: To determine a possible implication of CD21, CD35, and CD55 in the pathogenesis of age-related macular degeneration (AMD) by assessing the difference in expression rates of these factors on AMD patients and a control group. DESIGN: Case-control study. METHODS: Fifty unrelated AMD patients and 48 unrelated sex- and age-matched control subjects participated in this case-control study. Samples of fresh EDTA-blood were stained and flow cytometry was chosen to measure fluorescence emissions. The association between exudative AMD and CD21, CD35, and CD55 was evaluated from all patients who completed the study. RESULTS: Our study shows CD35 to be expressed in a significantly higher frequency in AMD patients on monocytes (P = .00586), lymphocytes (P = .000605), and granulocytes (P < .000033). In contrast, the expression rate of CD21 (P > .05) and CD55 (P > .05) are similar in both groups. CONCLUSION: More regulative factors of the complement system are involved in pathogenesis of AMD. Our study underlines the key role of the complement system in AMD and shows the involvement of the whole immune system through more regulative factors.
PURPOSE: To determine a possible implication of CD21, CD35, and CD55 in the pathogenesis of age-related macular degeneration (AMD) by assessing the difference in expression rates of these factors on AMDpatients and a control group. DESIGN: Case-control study. METHODS: Fifty unrelated AMDpatients and 48 unrelated sex- and age-matched control subjects participated in this case-control study. Samples of fresh EDTA-blood were stained and flow cytometry was chosen to measure fluorescence emissions. The association between exudative AMD and CD21, CD35, and CD55 was evaluated from all patients who completed the study. RESULTS: Our study shows CD35 to be expressed in a significantly higher frequency in AMDpatients on monocytes (P = .00586), lymphocytes (P = .000605), and granulocytes (P < .000033). In contrast, the expression rate of CD21 (P > .05) and CD55 (P > .05) are similar in both groups. CONCLUSION: More regulative factors of the complement system are involved in pathogenesis of AMD. Our study underlines the key role of the complement system in AMD and shows the involvement of the whole immune system through more regulative factors.
Authors: Anu Kauppinen; Jussi J Paterno; Janusz Blasiak; Antero Salminen; Kai Kaarniranta Journal: Cell Mol Life Sci Date: 2016-02-06 Impact factor: 9.261