Abstract：
PURPOSE:To study the nature of retinal inflammatory response in rd10 mice, an animal model of retinitis pigmentosa (RP), and to investigate the effect of an antioxidant on retinal inflammation and photoreceptor apoptosis. DESIGN:Experimental study. PARTICIPANTS AND CONTROLS:This study included 42 untreated rd10 mice, 30 N-acetylcysteine (NAC)-treated rd10 mice, and 20 C57BL/6 mice as controls. METHODS:Real-time polymerase chain reaction (PCR) was performed to evaluate the expression levels of inflammatory factors (proinflammatory cytokines and chemokines) in rd10 mouse retinas. Rd10 mice were treated with an antioxidant NAC, and its effect on retinal inflammation and photoreceptor apoptosis were examined by immunohistochemistry. MAIN OUTCOME MEASURES:Real-time PCR and immunohistochemistry. RESULTS:We demonstrated sequential events involving increased expression of proinflammatory cytokines and chemokines, activation of microglia, and photoreceptor apoptosis during retinal degeneration of rd10 mice. Furthermore, antioxidant treatment with NAC prevented the photoreceptor cell death along with suppression of inflammatory factors and microglial activation. CONCLUSIONS:Sustained chronic inflammatory reaction may contribute to the pathogenesis of retinal degeneration in rd10 mice, suggesting interventions for ocular inflammatory reaction using antioxidants as a potential treatment for patients with RP. FINANCIAL DISCLOSURE(S):The authors have no proprietary or commercial interest in any of the materials discussed in this article.
journal_name
Ophthalmologyjournal_title
Ophthalmologyauthors
Yoshida N,Ikeda Y,Notomi S,Ishikawa K,Murakami Y,Hisatomi T,Enaida H,Ishibashi Tdoi
10.1016/j.ophtha.2012.07.008subject
Has Abstractpub_date
2013-01-01 00:00:00pages
e5-12issue
1eissn
0161-6420issn
1549-4713pii
S0161-6420(12)00632-Xjournal_volume
120pub_type
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