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- W2022941394 abstract "PURPOSE. Retinal ischemia/reperfusion (I/R) injury damages retinal neurons. Carbon monoxide (CO) recently attracted attention as cytoprotective because of its anti-inflammatory and antiapoptotic effects. Rapid preconditioning of retinal neurons by inhaled CO before I/R injury may reduce inflammation and apoptosis in retinal ganglion cells (RGCs). METHODS. I/R injury was performed on the left eyes of rats (n = 8) with or without inhaled CO preconditioning (250 ppm) for 1 hour before ischemia. Densities of fluorogold-prelabeled RGCs were analyzed 7 days after injury in whole-mounts. Retinal tissue was further harvested to analyze protein expression of TNF-alpha, HSP-70, and mitogen-activated protein kinases (MAPKs) pERK1/2 and p-p38. DNA-binding activities of the transcription factors NF-kappaB, AP-1, CREB, and HSF-1 were determined to elucidate a possible pathway of neuroprotection. RESULTS. Seven days after I/R injury, RGC death decreased by 52% in the CO preconditioning group compared with controls receiving room air (P < 0.001). Similarly, CO inhalation resulted in attenuated caspase-3 activity and TNF-alpha protein expression. In contrast, HSP-70 protein expression was elevated in the retina after CO. CREB and HSF-1 showed CO-dependent regulation and p-p38 MAPK. CONCLUSIONS. Rapid preconditioning with CO mediates anti-inflammatory and antiapoptotic effects in retinal I/R injury, thus making it neuroprotective. Further studies are needed to evaluate whether CO posttreatment may represent a therapeutic option counteracting ischemic neuronal injury." @default.
- W2022941394 created "2016-06-24" @default.
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- W2022941394 date "2010-07-01" @default.
- W2022941394 modified "2023-09-25" @default.
- W2022941394 title "Preconditioning with Inhalative Carbon Monoxide Protects Rat Retinal Ganglion Cells from Ischemia/Reperfusion Injury" @default.
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- W2022941394 doi "https://doi.org/10.1167/iovs.09-4894" @default.
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