依达拉奉对小鼠视网膜急性光损伤的保护作用

目的探讨依达拉奉(edaravone)对小鼠视网膜急性光损伤的保护作用。方法 30只成年BALB/c雄性小鼠(左右眼共60只)随机分为正常组(n=24)、光损伤模型组(n=12)、损伤前给药组(n=6)、损伤前生理盐水组(n=6)、损伤后给药组(n=6)及损伤后生理盐水组(n=6);采用(12 000±450)lux白光照射BALB/c小鼠6 h建立急性视网膜光损伤模型,给药组采用玻璃体腔注射2μL(11.5×10-6mol/L)依达拉奉,使用视网膜电图检测光损伤后视网膜功能学变化,TUNEL染色观察暗修复24 h后视网膜细胞凋亡的数目,综合评价依达拉奉对视网膜的保护作用。结果视网膜电图中损伤...

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Published in西安交通大学学报(医学版) Vol. 32; no. 3; pp. 359 - 362
Main Author 朱昭亮 张小玲 莫明树 胡晓
Format Journal Article
LanguageChinese
Published 西安交通大学医学院第一附属医院眼科,陕西西安,710061%西安交通大学医学院遗传与分子生物学系,陕西西安,710061 2011
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Summary:目的探讨依达拉奉(edaravone)对小鼠视网膜急性光损伤的保护作用。方法 30只成年BALB/c雄性小鼠(左右眼共60只)随机分为正常组(n=24)、光损伤模型组(n=12)、损伤前给药组(n=6)、损伤前生理盐水组(n=6)、损伤后给药组(n=6)及损伤后生理盐水组(n=6);采用(12 000±450)lux白光照射BALB/c小鼠6 h建立急性视网膜光损伤模型,给药组采用玻璃体腔注射2μL(11.5×10-6mol/L)依达拉奉,使用视网膜电图检测光损伤后视网膜功能学变化,TUNEL染色观察暗修复24 h后视网膜细胞凋亡的数目,综合评价依达拉奉对视网膜的保护作用。结果视网膜电图中损伤前给药组各波波幅相对于光损伤模型组、损伤前生理盐水组和损伤后给药组下降幅度明显减低(P〈0.05);TUNEL染色中损伤前给药组外核层细胞凋亡的数目相对于光损伤模型组、损伤前生理盐水组和损伤后给药组显著减少(P〈0.05)。结论 2μL(11.5×10-6mol/L)依达拉奉玻璃体腔注射可抑制光诱导的视网膜外核层细胞凋亡,其机制可能与自由基清除有关
Bibliography:Objective To explore the protective effect of edaravone on light-induced acute retinal damage in mice.Methods Totally 30 adult BALB/C male mice(60 eyes in total) were randomly divided into normal group(n=24),photodamage group(n=12),pre-photodamage edaravone-treated group(n=6),pre-photodamage saline-treated group(n=6),post-photodamage edaravone-treated group(n=6) and post-photodamage saline-treated group(n=6).Mice were exposed to(12 000±450)lux white light for 6 hours to establish acute retinal photodamage model.2 μL edaravone(11.5×10-6mol/L) was used to interfere with acute retinal photodamage by intravitreal injection 2 hours before photodamage or immediately after photodamage.After 24 h dark repair,electroretinogram(ERG) was used to test the retinal function and TUNEL staining was used to detect the number of apoptotic retinal cells.All results were combined to evaluate edaravone’s protective effect on retinal photodamage.Results ERG result showed that the amplitudes decreased significantly less in pre-phot
ISSN:1671-8259