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Abstract #54397 Published in IGR 15-3

Neuroprotective Effects of Bis(7)-tacrine in a Rat Model of Pressure-Induced Retinal Ischemia

Li JB; Lu ZG; Xu L; Wang Q; Zhang ZH; Fang JH
Cell biochemistry and biophysics 2014; 68: 275-282

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The retinal ischemia-reperfusion model has been studied extensively and is an ideal animal model for studying clinical situations such as acute glaucoma and optic neuropathy. Our previous reports showed that bis(7)-tacrine had neuroprotective effects against glutamate-induced retinal ganglion cells damage through the drug's anti-NMDA receptor effects. Here, we investigated whether bis(7)-tacrine protects the retina from ischemic injury in a rat model. Retinal ischemia was induced by raising the intraocular pressure to 120 mmHg for 90 min. Rats received intraperitoneal injections of 0.2 mg/kg bis(7)-tacrine or saline at 30 min before ischemia, and then twice a day after retinal ischemia. Morphometric evaluation showed that bis(7)-tacrine dramatically reduced the retinal damage compared with the control group. Moreover, bis(7)-tacrine suppressed ischemia-induced reductions in a- and b-wave amplitudes of electroretinography. Protein levels of p53, the tumor suppressor gene known to induce apoptosis, were increased after ischemic injury, and treatment with bis(7)-tacrine reduced the expression of the protein. Our results suggest that bis(7)-tacrine has a neuroprotective effect against ischemic injury in the rat retina, possibly through the drug's anti-apoptotic effects. Bis(7)-tacrine may potentially be useful as a therapeutic drug in the management of ischemic retinal diseases.

Department of Ophthalmology, First Hospital of Jingzhou, Yangtze University, Jingzhou, 434000, Hubei, China.

Full article

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Classification:

11.8 Neuroprotection (Part of: 11 Medical treatment)
5.1 Rodent (Part of: 5 Experimental glaucoma; animal models)
11.14 Investigational drugs; pharmacological experiments (Part of: 11 Medical treatment)

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