RESUMEN
Silent information regulator protein 1 (SlRT1) is one of the sirtuins and belongs to histone deacetyase. lts activity depends on nicotinamide adenine dinucleotide ( NAD+) and is regulated by NAD+. Experimental and clinical studies have shown the neuro-protective effect of SlRT1 in the pathogenesis of age-related eye diseases. ln this review, the relationship between SlRT1 activator and apoptosis in the retinal cells were discussed. The review also points to SlRT1 as a potential therapeutic target for the clinical management of age-related retinal disease.
RESUMEN
Aim To investigate the protective effect of pituitary adenylate cyclase activating polypeptide(PACAP)on focal cerebral ischemia reperfusion injury in rats.Methods The models of focal cerebral ischemia reperfusion in rats were established with suture-occluded method to simulate the middle cerebral artery ischemia reperfusion injury in clinic.The treatment groups were given three different dose PACAP(PACAP 10-11 mol,PACAP 10-10 mol and PACAP 10-9 mol) in 15 minutes before cerebral ischemia.PACAPs were infused into lateral cerebral ventricle by microinjector.The water content of brain,the activity of superoxide dismutase(SOD),the content of malondialdehyde(MDA) and the content of nitrogen monoxidum(NO) of the brain tissue were determined.Results Compared with NS group,the water content of brain and the concentration of MDA and NO were obviously lower in each PACAP treatment group,while the activity of SOD was elevated to different degrees.Conclusion PACAP has an obvious protective effect on ischemia-reperfusion injury of focal brain tissue in rats,in which edema-alleviating,free radicals-scavenging and lipid peroxidation-attenuating could be involved.The protective effect seems to be more clear in middle-and high-dose group than in low-dose group.