ArticleCurrent eye research2022
Mechanism for Altered Dark-Adapted Electroretinogram Responses in DBA/2J Mice Includes Pupil Dilation Deficits.
Article in Current eye research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Lycium barbarum polysaccharide as a retinoprotective agent: A meta-analysis of preclinical evidence from rodent models of retinopathy.Neural regeneration research · 2026Article
- The role of microglia in glaucoma - trigger and potential target.Frontiers in immunology · 2025Review
- Diagnostic Performance of a Handheld Electroretinography Test for Glaucoma.Ophthalmology scienceArticle
- Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
purposeThe DBA/2J (D2) mouse is an established model of pigmentary glaucoma, a type of primary open angle glaucoma. Prior studies have documented defects in flash electroretinogram (ERG) responses in D2 mice, but the origin of those defects is not clear. The purpose of this study was to understand the origin of these A-wave and B-wave changes in D2 ERGs. MATERIALS AND
methodsTo accomplish this, we analyzed the differences between 9-month-old DBA/2J-
resultsD2 scotopic ERGs showed lower A-wave amplitude and longer implicit time as well as a significant rightward shift in the intensity-response curve. D2 IOP increased at approximately seven months of age and had a weak correlation with the ERG A-wave sensitivity. Outer nuclear layer thickness was not significantly different in D2s compared to D2-control retinas. D2 mouse pupils also showed abnormal pupillary shape and no dilation following treatment with tropicamide eye drops. The pupil size moderately correlated with the A-wave sensitivity and this was pharmacologically replicated in C57Bl/6J mice following administration of pilocarpine to constrict the pupils. However, pilocarpine treatment did not affect ERG amplitudes.
conclusionsThese data suggest that the smaller pupil sizes prevented light from reaching the photoreceptors and thus contributed to reduced ERG sensitivity in D2 mice. The reduced ERG A-wave amplitude in D2 mice likely results from dysfunctional photoreceptor responses.
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