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首页> 外文期刊>Cell biochemistry and biophysics >Early Combined Therapy with Pharmacologically Induced Hypothermia and Edaravone Exerts Neuroprotective Effects in a Rat Model of Intracerebral Hemorrhage
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Early Combined Therapy with Pharmacologically Induced Hypothermia and Edaravone Exerts Neuroprotective Effects in a Rat Model of Intracerebral Hemorrhage

机译:早期联合治疗与药理学上的体温过低和依达拉奉在大鼠脑出血模型中具有神经保护作用

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In present study, we evaluated acute neuroprotective effects of combined therapy with pharmacologically induced hypothermia and edaravone in a rat model of intracerebral hemorrhage (ICH). ICH was caused by injection of 0.5 U of collagenase VII to the caudate nucleus of male Sprague-Dawley rats. Sham-treated animals receive injections of normal saline instead of collagenase VII. All animals were randomly divided into five groups: sham group, ICH group, hypothermia group, edavarone (10 mg/kg) group, and combined hypothermia + edavarone group. Hypothermia was induced by injection of the second-generation neurotensin receptor agonist HPI-201 (2 mg/kg at 1 h after ICH; 1 mg/kg at 4 and 7 h after ICH). Hypothermia was sustained for at least 6 h. The study outcomes were the extent of brain edema, permeability of the blood-brain barrier (Evan's blue dye), expression of matrix metalloproteinase-9 and inflammatory cytokines (IL-1 beta, IL-4, IL-6, and TNF-alpha), and expression of apoptosis-related proteins (caspase-3, cytochrome C, Bcl-2, and Bax). Brain edema, permeability of the blood-brain barrier, and expression of metalloproteinase-9 were increased, while expression of caspase-3 and Bcl-2 was decreased by ICH. We observed that the combined therapy was significantly more potent in reverting the above negative trends induced by ICH. In conclusion, our results indicate that a combination of pharmacologically induced hypothermia and edavarone leads to potentiation of their respective neuroprotective effects.
机译:在本研究中,我们评估了在脑出血(ICH)大鼠模型中,药物治疗引起的体温过低和依达拉奉联合治疗的急性神经保护作用。 ICH是通过向雄性Sprague-Dawley大鼠的尾状核注射0.5 U胶原酶VII引起的。接受假手术的动物注射生理盐水代替胶原酶VII。将所有动物随机分为5组:假手术组,ICH组,体温过低组,依德华龙(10mg / kg)组,以及体温过低+依德华龙合并组。通过注射第二代神经降压素受体激动剂HPI-201(ICH后1 h为2 mg / kg; ICH后4和7 h为1 mg / kg)引起体温过低。体温过低至少持续6小时。研究结果包括脑水肿程度,血脑屏障通透性(埃文氏蓝色染料),基质金属蛋白酶9表达和炎性细胞因子(IL-1 beta,IL-4,IL-6和TNF-alpha) )和凋亡相关蛋白(胱天蛋白酶3,细胞色素C,Bcl-2和Bax)的表达。脑水肿,血脑屏障通透性和金属蛋白酶9的表达增加,而caspase-3和Bcl-2的表达被ICH降低。我们观察到,联合疗法在逆转由ICH引起的上述负面趋势方面更为有效。总之,我们的结果表明,药理学诱导的体温过低和依达伐龙的组合可增强其各自的神经保护作用。

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