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NTIS 바로가기Retina, v.29 no.7, 2009년, pp.966 - 973
WOLF-SCHNURRBUSCH, UTE E. K. (From the *Department of Ophthalmology, Inselspital, and †Department of Pathology, School of Medicine, University of Bern, Bern, Switzerland.) , STUCK, ANNA K. , HESS, ROBERTO , WOLF, SEBASTIAN , ENZMANN, VOLKER
PURPOSE:: To evaluate whether complement Factor P (properdin) was present in surgically removed choroidal neovascular membranes of patients with age-related macular degeneration (AMD) and to investigate whether associated pre- and postoperative clinical characteristics can be correlated. METHODS:: The study population consisted of 26 AMD patients (26 eyes) with the exclusion criterion of prior treatment of the choroidal neovascular membranes. Factor P was detected immunocytochemically on paraffin sections (7 μm) by a polyclonal rabbit antihuman antibody. RESULTS:: Eleven of 22 assessable membranes showed a positive reaction for Factor P. The average percentage of Factor P-positive cells per membrane ranged from 0.65% to 4.09%. The duration of visual loss was significantly longer (8.6 ± 2.7 vs. 3.9 ± 0.8 months), and the size of postoperative measured area of atrophic retinal pigment epithelium was larger (27.6 ± 7.6 vs. 15.0 ± 6.9 mm) in patients with Factor P-positive membranes compared with Factor P-negative ones. CONCLUSION:: Factor P was expressed in 50% of choroidal neovascular membranes of patients with AMD. The group with Factor P-positive membranes differed significantly from the Factor P-negative group in key clinical outcomes. Additional studies need to investigate the role of Factor P in the development of AMD for potential therapeutic intervention.
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