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PMID: 17921253 Published · ppublish English Journal Article

Complement factor H deficiency in aged mice causes retinal abnormalities and visual dysfunction.

Coffey PJ, Gias C, McDermott CJ, Lundh P, Pickering MC, Sethi C, Bird A, Fitzke FW, Maass A, Chen LL, Holder GE, Luthert PJ, Salt TE, Moss SE, Greenwood J

Abstract

Age-related macular degeneration is the most common form of legal blindness in westernized societies, and polymorphisms in the gene encoding complement factor H (CFH) are associated with susceptibility to age-related macular degeneration in more than half of affected individuals. To investigate the relationship between complement factor H (CFH) and retinal disease, we performed functional and anatomical analysis in 2-year-old CFH-deficient (cfh(-/-)) mice. cfh(-/-) animals exhibited significantly reduced visual acuity and rod response amplitudes on electroretinography compared with age-matched controls. Retinal imaging by confocal scanning laser ophthalmoscopy revealed an increase in autofluorescent subretinal deposits in the cfh(-/-) mice, whereas the fundus and vasculature appeared normal. Examination of tissue sections showed an accumulation of complement C3 in the neural retina of the cfh(-/-) mice, together with a decrease in electron-dense material, thinning of Bruch's membrane, changes in the cellular distribution of retinal pigment epithelial cell organelles, and disorganization of rod photoreceptor outer segments. Collectively, these data show that, in the absence of any specific exogenous challenge to the innate immune system, CFH is critically required for the long-term functional health of the retina.

MeSH Terms
Aging Animals Complement C3/analysis,metabolism Complement Factor H/deficiency,genetics Fluorescence Immunity, Innate Mice Mice, Mutant Strains Retina/abnormalities,chemistry,ultrastructure Retinal Rod Photoreceptor Cells/physiopathology Vision Disorders/genetics
Chemicals
Complement C3 Complement Factor H
Authors & Affiliations
15 authors, click to expand affiliations / ORCID
Coffey Peter J
Division of Cellular Therapy, Institute of Ophthalmology, University College London, London EC1V 9EL, United Kingdom.
Gias Carlos
McDermott Caroline J
Lundh Peter
Pickering Matthew C
Sethi Charanjit
Bird Alan
Fitzke Fred W
Maass Annelie
Chen Li Li
Holder Graham E
Luthert Philip J
Salt Thomas E
Moss Stephen E
Greenwood John
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Article Info
Journal
Proceedings of the National Academy of Sciences of the United States of America
Abbr.
Proc Natl Acad Sci U S A
ISSN
0027-8424
Published
2007-10-16
Epub
2007-00-05
Pages
16651-6
Language
English
Region
United States
NLM ID
7505876
PMCID
PMC2034255
Subset
IM
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