Retinal function and CFH-ARMS2 polymorphisms analysis: a pilot study in Italian AMD patients

Angelo Maria Minnella, Benedetto Falsini, Ettore Domenico Capoluongo, Paola Concolino, Marco Piccardi, Dario Marangoni, Antonio Fadda, Cecilia Zuppi, E Mello, C Savastano, S Bisti

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Two major susceptibility genes, complement factor H (CFH) and age-related maculopathy susceptibility 2 (ARMS2), have been implicated in age-related macular degeneration (AMD) pathogenesis. We analyzed the association between CFH rs1061170 and/or ARMS2 rs10490924 polymorphisms with central retinal function properties, as evaluated by focal electroretinogram (fERG). Forty early AMD patients, with preserved visual acuity and typical macular lesions, underwent fERG recording (in response to 41 Hz flicker stimuli presented to the central 18 degrees) and CFH/ARMS2 genotyping. Mean fERG amplitude and sensitivity decreased in patients carrying CFH rs1061170 polymorphism (p < 0.01), compared with wild type ones, although visual acuity and funduscopic features were similar across the 2 groups. No significant fERG phase changes were observed. No association was detected between ARMS2 (rs10490924) polymorphism and fERG parameters. Our findings indicate that CFH (rs1061170) polymorphism impacts significantly on retinal function in early AMD patients, and support the hypothesis that dysfunctional CFH might result in early retinal function loss due to a reduction in the immune antioxidant defense mechanism.
Original languageEnglish
Pages (from-to)1852.e5-1852.e5-12
JournalNeurobiology of Aging
Volume33
DOIs
Publication statusPublished - 2012

Keywords

  • Age Distribution
  • Aged
  • Aged, 80 and over
  • Complement Factor H
  • Female
  • Genetic Markers
  • Genetic Predisposition to Disease
  • Genetic Variation
  • Humans
  • Italy
  • Macular Degeneration
  • Male
  • Middle Aged
  • Pilot Projects
  • Polymorphism, Genetic
  • Polymorphism, Single Nucleotide
  • Prevalence
  • Proteins
  • Risk Factors

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