M Yoshino1, D Kurosaka, M Obazawa, F Takayama. 1. Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinnjuku-ku, Tokyo 160-8582, Japan.
Abstract
PURPOSE: We investigated whether alpha 5 beta 1 integrin and fibronectin were present in myofibroblast-like lens epithelial cells in anterior subcapsular cataract (ASC). METHODS: Nine anterior capsule specimens were obtained from the patients during cataract surgery and frozen for cryostat sections. Six specimens were anterior capsule obtained from cataract with ASC. As a control, three specimens were obtained from cataract without ASC. Alpha-smooth muscle actin (alpha-SMA), alpha 5 beta 1 integrin, and fibronectin were detected by immunohistochemical observation. RESULTS: In all 6 specimens from patients with ASC, the lens epithelial cells around fibrosis tissue included myofibroblast-like lens epithelial cells which were positive for alpha-SMA. alpha 5 beta 1 integrin was detected in these lens epithelial cells. Fibronectin was also detected around these myofibroblast-like lens epithelial cells. Three control specimens showed no immunoreactivity against alpha-SMA, alpha 5 beta 1 integrin, or fibronectin. CONCLUSIONS: Alpha 5 beta 1 integrin and fibronectin may play an important role in myodifferentiation of lens epithelial cells.
PURPOSE: We investigated whether alpha 5 beta 1 integrin and fibronectin were present in myofibroblast-like lens epithelial cells in anterior subcapsular cataract (ASC). METHODS: Nine anterior capsule specimens were obtained from the patients during cataract surgery and frozen for cryostat sections. Six specimens were anterior capsule obtained from cataract with ASC. As a control, three specimens were obtained from cataract without ASC. Alpha-smooth muscle actin (alpha-SMA), alpha 5 beta 1 integrin, and fibronectin were detected by immunohistochemical observation. RESULTS: In all 6 specimens from patients with ASC, the lens epithelial cells around fibrosis tissue included myofibroblast-like lens epithelial cells which were positive for alpha-SMA. alpha 5 beta 1 integrin was detected in these lens epithelial cells. Fibronectin was also detected around these myofibroblast-like lens epithelial cells. Three control specimens showed no immunoreactivity against alpha-SMA, alpha 5 beta 1 integrin, or fibronectin. CONCLUSIONS: Alpha 5 beta 1 integrin and fibronectin may play an important role in myodifferentiation of lens epithelial cells.
Authors: Yvonne de Jong-Hesse; Juergen Kampmeier; Gerhard K Lang; Gabriele E Lang Journal: Graefes Arch Clin Exp Ophthalmol Date: 2005-02-09 Impact factor: 3.117
Authors: S M McLean; M R K Mathew; J B Kelly; S B Murray; H G B Bennett; L A Webb; L Esakowitz; J S McLean Journal: Br J Ophthalmol Date: 2005-11 Impact factor: 4.638