ArticleBioMed research international2018
Time Course Changes of the Mechanical Properties of the Iris Pigment Epithelium in a Rat Chronic Ocular Hypertension Model.
Article in BioMed research international, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 7 citations in OpenAlex.
- Clinical characteristics and risk factors of ocular hypertension: a case-control study.BMC ophthalmology · 2025Article
- Change in Mechanical Property of Rat Brain Suffering from Chronic High Intraocular Pressure.Bioengineering (Basel, Switzerland) · 2025Article
- Study on the Polarization of Astrocytes in the Optic Nerve Head of Rats Under High Intraocular Pressure: In Vitro.Bioengineering (Basel, Switzerland) · 2025Article
- Mechanical property changes of glial LC and RGC axons in response to high intraocular pressure.Frontiers in bioengineering and biotechnology · 2025Article
- Morphological Changes of Glial Lamina Cribrosa of Rats Suffering from Chronic High Intraocular Pressure.Bioengineering (Basel, Switzerland) · 2022Article
- In vivo estimation of murine iris stiffness using finite element modeling.Experimental eye research · 2021Article
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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
backgroundThe flow field of aqueous humor correlates to the stiffness of iris pigment epithelium (IPE) which acts as a wall of posterior chamber. We focus on the variations of IPE stiffness in a rat ocular hypertension (OHT) model, so as to prepare for exploring the mechanism of duration of OHT.
methodsEpiscleral venous cauterization (EVC) was applied on one eye of male adult Sprague-Dawley rats to induce chronic high intraocular pressure. According to the duration of OHT (0, 1, 2, 4, and 8 weeks), rats were randomly divided into Gw0, Gw1, Gw2, Gw4, and Gw8. Atomic force microscope (AFM) analysis was applied to test IPE stiffness in three regions: iris root, mid-periphery, and pupillary-margin in each group. Histological changes of IPE were also examined in Gw4 and Gw8.
resultsThere was an overall growing tendency of IPE stiffness in EVC eye. IPE in EVC eye was significantly stiffer than fellow eye in Gw2, Gw4, and Gw8 (in iris root, mid-periphery, and pupillary-margin, p<0.05). IPE in EVC eye in pupillary-margin was significantly stiffer than iris root in Gw4 and Gw8 (p<0.05). In EVC eye, IPE becomes thinner and IPE cell density decreases.
conclusionIPE stiffness increases gradually with the duration of chronic high intraocular pressure.
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