Biochemistry publications

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Browsing Biochemistry publications by Author "Agar, A."

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    The APOE E4 allele is associated with faster rates of neuroretinal thinning in a prospective cohort study of suspect and early glaucoma
    (Elsevier BV, 2022) Mullany, S.; Marshall, H.; Diaz-Torres, S.; Berry, E.C.; Schmidt, J.M.; Thomson, D.; Qassim, A.; To, M.-S.; Dimasi, D.; Kuot, A.; Knight, L.S.W.; Hollitt, G.; Kolovos, A.; Schulz, A.; Lake, S.; Mills, R.A.; Agar, A.; Galanopoulos, A.; Landers, J.; Mitchell, P.; et al.
    Purpose: To investigate the association between the apolipoprotein E (APOE) E4 dementia-risk allele and prospective longitudinal retinal thinning in a cohort study of suspect and early manifest glaucoma. Design: Retrospective analysis of prospective cohort data. Participants: This study included all available eyes from participants recruited to the Progression Risk of Glaucoma: Relevant SNPs [single nucleotide polymorphisms] with Significant Association (PROGRESSA) study with genotyping data from which APOE genotypes could be determined. Methods: Apolipoprotein E alleles and genotypes were determined in PROGRESSA, and their distributions were compared with an age-matched and ancestrally matched normative cohort, the Blue Mountains Eye Study. Structural parameters of neuroretinal atrophy measured using spectral-domain OCT were compared within the PROGRESSA cohort on the basis of APOE E4 allele status. Main Outcome Measures: Longitudinal rates of thinning in the macular ganglion celleinner plexiform layer (mGCIPL) complex and the peripapillary retinal nerve fiber layer (pRNFL). Results: Rates of mGCIPL complex thinning were faster in participants harboring ≥1 copies of the APOE E4 allele (b ¼ e0.13 mm/year; P ≤0.001). This finding was strongest in eyes affected by normal-tension glaucoma (NTG; b ¼ e0.20 mm/year; P ¼ 0.003). Apolipoprotein E E4 allele carriers were also more likely to be lost to followup (P ¼ 0.01) and to demonstrate a thinner average mGCIPL complex (70.9 mm vs. 71.9 mm; P ¼ 0.011) and pRNFL (77.6 mm vs. 79.2 mm; P ¼ 0.045) after a minimum of 3 years of monitoring. Conclusions: The APOE E4 allele was associated with faster rates of mCGIPL complex thinning, particularly in eyes with NTG. These results suggest that the APOE E4 allele may be a risk factor for retinal ganglion cell degeneration in glaucoma.