Morphological Changes of Glial Lamina Cribrosa of Rats Suffering from Chronic High Intraocular Pressure
Deformations or remodeling of the lamina cribrosa (LC) induced by elevated intraocular pressure (IOP) are associated with optic nerve injury. The quantitative analysis of the morphology changes of the LC will provide the basis for the study of the pathogenesis of glaucoma. After the chronic high-IOP...
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MDPI AG
2022-11-01
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| Series: | Bioengineering |
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| Online Access: | https://www.mdpi.com/2306-5354/9/12/741 |
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| author | Jingxi Zhang Yushu Liu Liu Liu Lin Li Xiuqing Qian |
| author_facet | Jingxi Zhang Yushu Liu Liu Liu Lin Li Xiuqing Qian |
| author_sort | Jingxi Zhang |
| collection | DOAJ |
| description | Deformations or remodeling of the lamina cribrosa (LC) induced by elevated intraocular pressure (IOP) are associated with optic nerve injury. The quantitative analysis of the morphology changes of the LC will provide the basis for the study of the pathogenesis of glaucoma. After the chronic high-IOP rat model was induced by cauterizing episcleral veins with 5-Fluorouracil subconjunctival injection, the optic nerve head (ONH) cross sections were immunohistochemically stained at 2 w, 4 w, 8 w, and 12 w. Then the sections were imaged by a confocal microscope, and six morphological parameters of the ONH were calculated after the images were processed using Matlab. The results showed that the morphology of the ONH changed with the duration of chronic high IOP. The glial LC pore area fraction, the ratio of glial LC pore area to the glial LC tissue area, first decreased at 2 w and 4 w and then increased to the same level as the control group at 8 w and continued to increase until 12 w. The number and density of nuclei increased significantly at 8 w in the glial LC region. The results might mean the fraction of glial LC beam increased and astrocytes proliferated at the early stage of high IOP. Combined with the images of the ONH, the results showed the glial LC was damaged with the duration of chronic elevated IOP. |
| first_indexed | 2024-03-09T17:18:56Z |
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| issn | 2306-5354 |
| language | English |
| last_indexed | 2024-03-09T17:18:56Z |
| publishDate | 2022-11-01 |
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| spelling | doaj.art-2192831750984cfc9d70dad82918a9cf2023-11-24T13:20:12ZengMDPI AGBioengineering2306-53542022-11-0191274110.3390/bioengineering9120741Morphological Changes of Glial Lamina Cribrosa of Rats Suffering from Chronic High Intraocular PressureJingxi Zhang0Yushu Liu1Liu Liu2Lin Li3Xiuqing Qian4School of Biomedical Engineering, Capital Medical University, Beijing 100069, ChinaSchool of Biomedical Engineering, Capital Medical University, Beijing 100069, ChinaSchool of Biomedical Engineering, Capital Medical University, Beijing 100069, ChinaSchool of Biomedical Engineering, Capital Medical University, Beijing 100069, ChinaSchool of Biomedical Engineering, Capital Medical University, Beijing 100069, ChinaDeformations or remodeling of the lamina cribrosa (LC) induced by elevated intraocular pressure (IOP) are associated with optic nerve injury. The quantitative analysis of the morphology changes of the LC will provide the basis for the study of the pathogenesis of glaucoma. After the chronic high-IOP rat model was induced by cauterizing episcleral veins with 5-Fluorouracil subconjunctival injection, the optic nerve head (ONH) cross sections were immunohistochemically stained at 2 w, 4 w, 8 w, and 12 w. Then the sections were imaged by a confocal microscope, and six morphological parameters of the ONH were calculated after the images were processed using Matlab. The results showed that the morphology of the ONH changed with the duration of chronic high IOP. The glial LC pore area fraction, the ratio of glial LC pore area to the glial LC tissue area, first decreased at 2 w and 4 w and then increased to the same level as the control group at 8 w and continued to increase until 12 w. The number and density of nuclei increased significantly at 8 w in the glial LC region. The results might mean the fraction of glial LC beam increased and astrocytes proliferated at the early stage of high IOP. Combined with the images of the ONH, the results showed the glial LC was damaged with the duration of chronic elevated IOP.https://www.mdpi.com/2306-5354/9/12/741high intraocular pressureglial lamina cribrosapore area fractionmorphology |
| spellingShingle | Jingxi Zhang Yushu Liu Liu Liu Lin Li Xiuqing Qian Morphological Changes of Glial Lamina Cribrosa of Rats Suffering from Chronic High Intraocular Pressure Bioengineering high intraocular pressure glial lamina cribrosa pore area fraction morphology |
| title | Morphological Changes of Glial Lamina Cribrosa of Rats Suffering from Chronic High Intraocular Pressure |
| title_full | Morphological Changes of Glial Lamina Cribrosa of Rats Suffering from Chronic High Intraocular Pressure |
| title_fullStr | Morphological Changes of Glial Lamina Cribrosa of Rats Suffering from Chronic High Intraocular Pressure |
| title_full_unstemmed | Morphological Changes of Glial Lamina Cribrosa of Rats Suffering from Chronic High Intraocular Pressure |
| title_short | Morphological Changes of Glial Lamina Cribrosa of Rats Suffering from Chronic High Intraocular Pressure |
| title_sort | morphological changes of glial lamina cribrosa of rats suffering from chronic high intraocular pressure |
| topic | high intraocular pressure glial lamina cribrosa pore area fraction morphology |
| url | https://www.mdpi.com/2306-5354/9/12/741 |
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