Durable 3D murine ex vivo retina glaucoma models for optical coherence tomography

被引:2
|
作者
Barroso, Alvaro [1 ]
Ketelhut, Steffi [1 ]
Nettels-Hackert, Gerburg [2 ]
Heiduschka, Peter [2 ]
Del Amor, Rocio [3 ]
Naranjo, Valery [3 ]
Kemper, Bjorn [1 ]
Schnekenburger, Jurgen [1 ]
机构
[1] Univ Munster, Fac Med, Biomed Technol Ctr, Mendelstr 17, D-48149 Munster, Germany
[2] Univ Munster, Fac Med, Dept Ophthalmol, Domagkstr 15, D-48149 Munster, Germany
[3] Univ Politecn Valencia, Inst Univ Invest Tecnol Centrada el Ser Humano, Valencia, Spain
基金
欧盟地平线“2020”;
关键词
FIBER LAYER THICKNESS; GANGLION-CELLS; PHANTOM EYE; QUALITY ASSESSMENT; DEGENERATION; RESOLUTION; GENE; IDENTIFICATION; DEATH;
D O I
10.1364/BOE.494271
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Durable and standardized phantoms with optical properties similar to native healthy and disease-like biological tissues are essential tools for the development, performance testing, calibration and comparison of label-free high-resolution optical coherence tomography (HR-OCT) systems. Available phantoms are based on artificial materials and reflect thus only partially ocular properties. To address this limitation, we have performed investigations on the establishment of durable tissue phantoms from ex vivo mouse retina for enhanced reproduction of in vivo structure and complexity. In a proof-of-concept study, we explored the establishment of durable 3D models from dissected mouse eyes that reproduce the properties of normal retina structures and tissue with glaucoma-like layer thickness alterations. We explored different sectioning and preparation procedures for embedding normal and N-methyl-D-aspartate (NMDA)-treated mouse retina in transparent gel matrices and epoxy resins, to generate durable three-dimensional tissue models. Sample quality and reproducibility were quantified by thickness determination of the generated layered structures utilizing computer-assisted segmentation of OCT B-scans that were acquired with a commercial HR-OCT system at a central wavelength of 905 nm and analyzed with custom build software. Our results show that the generated 3D models feature thin biological layers close to current OCT resolution limits and glaucoma-like tissue alterations that are suitable for reliable HR-OCT performance characterization. The comparison of data from resin-embedded tissue with native murine retina in gels demonstrates that by utilization of appropriate preparation protocols, highly stable samples with layered structures equivalent to native tissues can be fabricated. The experimental data demonstrate our concept as a promising approach toward the fabrication of durable biological 3D models suitable for high-resolution OCT system performance characterization supporting the development of optimized instruments for ophthalmology applications.
引用
收藏
页码:4421 / 4438
页数:18
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