ArticleInvestigative ophthalmology & visual science2025
Choroidal Mast Cells and Their Degranulation Are a Pivotal Trigger for Myopia Development.
Article in Investigative ophthalmology & visual science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 1 paper.
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
1 citing paper in PubMed.
- Relationship between choroidal thickness changes and macrophage polarization in high myopia.Frontiers in medicine · 2026Review
Corrections and comments
- Erratum issued
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: Mast cells (MCs), key immune regulators, contribute to inflammatory responses through their degranulation. Choroidal thinning is a hallmark of myopia, and MC degranulation has been shown to induce choroidal thinning in a rat model of geographical atrophy. However, the role of choroidal MCs in myopia remains poorly understood. This study aimed to demonstrate that an increased number and proportion of degranulated MCs in the choroid are important determinants of choroidal thinning and myopia development. Methods: Lens-induced myopia (LIM) was induced by monocular -30 diopter (D) lens wearing in C57BL/6 mice, MC-deficient mice (Mcpt5/Cma1DTR/+), and MC-deficient mice receiving suprachoroidal injection of peritoneal MCs (PMCs). Cromolyn sodium (cromolyn) and pemirolast potassium (pemirolast), reagents that inhibit degranulation by stabilizing MC membranes, were topically applied in LIM mice. Ocular parameters including refraction, axial length, and choroidal thickness were measured before and after LIM. Choroidal MC degranulation was evaluated by choroidal flatmount staining. Results: LIM was successfully induced in wild-type mice but was significantly suppressed in MC-deficient mice. Suprachoroidal injection of PMCs into MC-deficient mice restored myopia progression, as evidenced by axial elongation and choroidal thinning. MC degranulation was significantly increased by -30 D lens wearing, whereas topical administration of cromolyn and pemirolast effectively inhibited both MC degranulation and myopia progression. Conclusions: Choroidal MC degranulation plays a critical role in LIM by promoting choroidal thinning and axial elongation. These findings enhance our understanding of the role of choroidal MC degranulation in myopia, suggesting a potential therapeutic target for myopia treatment.
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