ArticleInvestigative ophthalmology & visual science2021
Retinal Aquaporin-4 and Regulation of Water Inflow Into the Vitreous Body.
Article in Investigative ophthalmology & visual science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.
- Exploring the role of oxidative stress in retinal vein occlusion: an updated and comprehensive review on the pathophysiology and treatment perspectives.International ophthalmology · 2025Pooled it
- Ocular Solute Movement Direction and Intracranial Clearance via Vitreous Gadolinium-based Contrast Agent MR Imaging: Potential as a Novel Biomarker for Glymphatic Dysfunction.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2026Article
- New Perspective on Aqueous Humor Circulation: Retina Takes the Lead.International journal of molecular sciences · 2025Review
- Nanoparticle-based optical interfaces for retinal neuromodulation: a review.Frontiers in cellular neuroscience · 2024Review
- Aquaporin-4 Deficiency is Associated with Cognitive Impairment and Alterations in astrocyte-neuron Lactate Shuttle.Molecular neurobiology · 2023Article
- Age-Dependent Changes in Regulation of Water Inflow Into the Vitreous Body.Investigative ophthalmology & visual science · 2023Article
- Imaging ocular water inflow in the mouse with deuterium oxide MRI.Magnetic resonance imaging · 2023Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: Details of the posterior eye water dynamics are unclear. Aquaporin-4 (AQP4), a water channel, plays an important role in water dynamics in the central nervous system and is also present in the ocular tissue. The purpose of this study was to reveal the role of AQP4 in the water dynamics of the posterior eye using in vivo JJ vicinal coupling proton exchange (JJVCPE) magnetic resonance imaging (MRI) of AQP4 knockout (KO) mice and their wild-type littermates (controls). Methods: JJVCPE MRI of the eye was performed on five AQP4 KO mice and seven control mice. We assessed the normalized signal intensities of a region of interest (ROI) set in the vitreous body after H217O administration. The results of the two groups were compared using a two-tailed Mann-Whitney U test. Results: A statistical analysis revealed that the normalized ROI signal intensities at the steady state were significantly lower (P = 0.010, <0.05) in the AQP4 KO mice (mean ± SD, 84.5% ± 2.7%) than the controls (mean ± SD, 88.8% ± 1.9%). Conclusions: The present study using JJVCPE MRI of the eye demonstrated that retinal AQP4 has a potential role in the regulation of water inflow into the vitreous body. Absence of AQP4 in the KO mice probably induces lower water outflow from the vitreous body. Our results could help clarify the pathogenesis of various ocular diseases.
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