These studies aimed to study the mechanisms of glaucomatous peripapillary scleral (PPS) remodeling by investigating IOP-induced changes in fibroblast actin-collagen alignment and nuclear morphology in mouse PPS. Cryosections from the optic nerve heads (ONH) of eyes isolated 1- and 6-weeks after bead-induced IOP elevation were imaged for nuclei, fibrillar actin (FA), and collagen (second harmonic generation, SHG). Two-dimensional nuclear morphology was analyzed using VAMPIRE machine-learning image analysis and FA-collagen alignment was determined by comparing vector fields of FA and SHG images. Nuclear morphology was regionally defined with the internal (pial) PPS (iPPS) containing nuclei with higher aspect ratios than the peripheral PPS (outer PPS, oPPS) and peripheral sclera. FA-collagen alignment was higher in the PPS than in the peripheral sclera (7.1 ± 2.5° versus 10.0 ± 1.4°, pâ=â0.05, nâ=â6). One and six weeks after BI, there were non-significant nuclear morphologic changes reflecting a transition to a rounder shape in all scleral regions and persistently reduced FA-collagen alignment in the PPS regions. This study therefore concludes that chronic IOP elevation is associated with persistent alterations in FA-collagen alignment that indicate sustained cellular responses to tissue stress.
Analysis of 2-dimensional regional differences in the peripapillary scleral fibroblast cytoskeleton of normotensive and hypertensive mouse eyes.
阅读:2
作者:Mozzer Ann, Raj Joe Gerald Jesu, Yasmin Nushrat, Esposito Edward, Pitha Ian
期刊: | Scientific Reports | 影响因子: | 3.900 |
时间: | 2025 | 起止号: | 2025 Jul 1; 15(1):21207 |
doi: | 10.1038/s41598-025-08251-4 |
特别声明
1、本文转载旨在传播信息,不代表本网站观点,亦不对其内容的真实性承担责任。
2、其他媒体、网站或个人若从本网站转载使用,必须保留本网站注明的“来源”,并自行承担包括版权在内的相关法律责任。
3、如作者不希望本文被转载,或需洽谈转载稿费等事宜,请及时与本网站联系。
4、此外,如需投稿,也可通过邮箱info@biocloudy.com与我们取得联系。