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Analysis of hemopexin plasma levels in patients with age-related macular degeneration. | LitMetric

Analysis of hemopexin plasma levels in patients with age-related macular degeneration.

Mol Vis

Department of Ophthalmology, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands.

Published: April 2023

Purpose: A protein quantitative trait locus (pQTL) analysis recently revealed a strong association between hemopexin (HPX) levels and genetic variants at the complement factor H () locus. In this study, we aimed to determine HPX plasma levels in patients with age-related macular degeneration (AMD) and to compare them with those in controls. We also investigated whether genetic variants at the locus are associated with HPX plasma levels.

Methods: HPX levels were quantified in 200 advanced AMD cases and 200 controls using an enzyme-linked immunosorbent assay and compared between the two groups. Furthermore, HPX levels were analyzed per genotype group of three HPX-associated variants (rs61818956, rs10494745, and rs10801582) and four AMD-associated variants (rs794362 [proxy for rs187328863], rs570618, rs10922109, and rs61818924 [proxy for rs61818925]) at the locus.

Results: HPX levels were similar in the control group compared with the AMD group. The three variants at the locus, which were previously associated with the HPX levels, showed no association with the HPX levels in our data set. No significant differences in HPX levels were detected between the different genotype groups of AMD-associated variants at the locus.

Conclusions: In this study, HPX levels were not associated with AMD or AMD-associated variants at the locus. The finding of a previous pQTL study that variants at the locus were associated with HPX levels was also not confirmed in this study.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10115365PMC

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