Brain Res:FTY720减弱铁沉积和胶质细胞反应,改善胶原酶诱导的脑出血的延迟病变和远期疗效

2019-05-02 不详 网络

大多数脑出血(ICH)幸存者的长期预后不良,如认知缺陷和抑郁。ICH的延迟病变包括神经元丧失和白质损伤,并且病变的病理学涉及铁沉积和神经胶质反应,其导致动物的抑郁样行为和认知障碍。本研究旨在探讨FTY720(0.3 mg/kg /天,共4周)对ICH小鼠铁沉积,胶质细胞反应,组织学异常和行为功能障碍的影响。在我们的ICH小鼠研究中,主要的不良长期结果是抑郁样行为和识别记忆受损。我们发现FTY720

大多数脑出血(ICH)幸存者的长期预后不良,如认知缺陷和抑郁。ICH的延迟病变包括神经元丧失和白质损伤,并且病变的病理学涉及铁沉积和神经胶质反应,其导致动物的抑郁样行为和认知障碍。本研究旨在探讨FTY720(0.3 mg/kg /天,共4周)对ICH小鼠铁沉积,胶质细胞反应,组织学异常和行为功能障碍的影响。

在我们的ICH小鼠研究中,主要的不良长期结果是抑郁样行为和识别记忆受损。我们发现FTY720在ICH后28天安全地改善了抑郁样行为和识别受损,而不影响握力和自发活动的恢复。此外,我们测量了第28天的神经元丧失,白质病变,病变体积和铁沉积,结果发现与ICH对照组相比,在FTY720治疗组中减弱,而在ICH后第1天没有改变初始血肿体积。通过蛋白质印迹和免疫荧光染色证实胶质细胞反应的长期升高,包括小胶质细胞活性和星形胶质细胞增生与肿瘤坏死因子α(TNFα)表达,我们发现FTY720处理减弱了这种作用。

因此,FTY720可能成为改善ICH后长期预后的新型治疗药物。

原始出处:

Yang Z, Dong S, et al., FTY720 attenuates iron deposition and glial responses in improving delayed lesion and long-term outcomes of collagenase-induced intracerebral hemorrhage. Brain Res. 2019 Apr 27. pii: S0006-8993(19)30232-X. doi: 10.1016/j.brainres.2019.04.031.

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    2019-05-02 内科新手

    谢谢梅斯提供这么好的信息,学到很多

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