The Dynamic Scleral Extracellular Matrix Alterations in Chronic Ocular Hypertension Model of Rats.
extracellular matrix
glaucoma
intraocular pressure
matrix metalloproteinase 2
sclera
Journal
Frontiers in physiology
ISSN: 1664-042X
Titre abrégé: Front Physiol
Pays: Switzerland
ID NLM: 101549006
Informations de publication
Date de publication:
2020
2020
Historique:
received:
30
12
2019
accepted:
26
05
2020
entrez:
29
7
2020
pubmed:
29
7
2020
medline:
29
7
2020
Statut:
epublish
Résumé
Intraocular pressure (IOP) generates stress and strains in the laminar cribrosa and sclera, which may affect the development and progression of glaucoma. Scleral stiffness and material components have changed under elevated IOP. However, the detailed changes of the components of the hypertensive sclera are not well understood. In this study, we aimed to investigate the changes of the main components in the scleral extracellular matrix (ECM), and matrix metalloproteinase 2 (MMP2) and their relationship with time under chronic elevated IOP in Sprague-Dawley rats. An ocular hypertension model was established in the right eyes by anterior chamber injection with 0.3% carbomer solution. The left eye was used as the contralateral control. Immunofluorescent imaging of the tissue frozen sections, Western blot analysis, and quantitative PCR (qPCR) were performed to detect the expressions of type I collagen (COL1), elastin, and MMP2 in the sclera. The ocular hypertension model was successfully established. As compared to the left eyes, the immunofluorescence imaging, Western blot analysis, and qPCR showed that COL1, elastin, and MMP2 were significantly increased in the right eyes at 1 week (all
Identifiants
pubmed: 32719611
doi: 10.3389/fphys.2020.00682
pmc: PMC7349004
doi:
Types de publication
Journal Article
Langues
eng
Pagination
682Informations de copyright
Copyright © 2020 Qiu, Yao, Zhang, Zhang, Sun and Qian.
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