Jing-Yun Gan1, Qing-Song Li1, Huan-Ming Zhou1, Wei Zhang1, Ling-Zhi Lian2, Zhang Yu3, Zhen-Yong Zhang2. 1. Department of Ophthalmology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China. 2. Department of Pathology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China. 3. Department of Electron Microscopy, Shanghai Medical College, Fudan University, Shanghai 200062, China.
Abstract
AIM: To explore a feasible method on the establishment of an animal model of conjunctivochalasis (CCH). METHODS: Twelve clean-grade New Zealand white rabbits were divided into four groups (n=3/group): the control group (one received no interventions, and the others underwent subconjunctival injection of sterile water), the matrix metalloproteinases (MMPs) group (administered subconjunctival injection of MMP-3), the aging group (administered subcutaneous injection of D-galactose), the tumor necrosis factor-α (TNF-α) solution group (administered eye drops of TNF-α). Anterior segment photography, conjunctival tissue light microscopy and transmission electron microscopy (TEM) were performed after 12wk. RESULTS: Among all groups, the MMPs group had the following changes: the looser connection between the inferior bulbar conjunctiva and sclera; the more disordered collagen fibers (Trichrome staining) and the broken elastic fibers (Aldehyde-fuchsin staining); the focal necrosis of fibroblasts (TEM). CONCLUSION: Administration of MMPs may be a feasible method for the establishment of an animal model of CCH.
AIM: To explore a feasible method on the establishment of an animal model of conjunctivochalasis (CCH). METHODS: Twelve clean-grade New Zealand white rabbits were divided into four groups (n=3/group): the control group (one received no interventions, and the others underwent subconjunctival injection of sterile water), the matrix metalloproteinases (MMPs) group (administered subconjunctival injection of MMP-3), the aging group (administered subcutaneous injection of D-galactose), the tumor necrosis factor-α (TNF-α) solution group (administered eye drops of TNF-α). Anterior segment photography, conjunctival tissue light microscopy and transmission electron microscopy (TEM) were performed after 12wk. RESULTS: Among all groups, the MMPs group had the following changes: the looser connection between the inferior bulbar conjunctiva and sclera; the more disordered collagen fibers (Trichrome staining) and the broken elastic fibers (Aldehyde-fuchsin staining); the focal necrosis of fibroblasts (TEM). CONCLUSION: Administration of MMPs may be a feasible method for the establishment of an animal model of CCH.