蝮蛇毒介导的心肌损伤与NT-proBNP、TNF-α表达的相关性
发布时间:2019-05-31 21:36
【摘要】:目的:观察蝮蛇毒介导的心肌损伤与NT-proBNP、TNF-α的表达,探讨蝮蛇毒介导的心肌损伤的机制。 方法: 1.96只小鼠随机分成12组,每组8只,共设三个组:生理盐水(对照组)、蝮蛇毒+生理盐水(实验组)、蝮蛇毒+TNF-α抑制剂(干预组);中毒时间设4个时相点:1h、12h、24h、48h。 2.采集小鼠血清,ELISA检测血清cTnT和NT-proBNP水平。 3.采集小鼠心肌标本,观察心肌组织病变,免疫组化检测心肌组织TNF-α蛋白的表达。 4.对心肌病变积分、血清cTnT水平与血清NT-proBNP水平、心肌TNF-α表达行直线相关分析。 结果: 1.实验组各时相点心肌病变积分均高于干预组和对照组(P<0.05),干预组各时相点病变积分高于对照组(P<0.05);实验组和干预组中12h时高于1h时(P<0.05),24h时高于12h时(P<0.05),48h时高于24h时(P<0.05)。 2.实验组各时相点心肌TNF-α蛋白表达均高于干预组和对照组(P<0.05),干预组各时相点高于对照组(P<0.05);实验组和干预组中12h时高于1h时(P<0.05),24h时高于12h时(P<0.05),48h时高于24h时(P<0.05)。 3.除1h组外,肌注蝮蛇毒的实验组小鼠其它各时相点血清cTnT水平均高于干预组及对照组(P<0.05),干预组各时相点高于对照组(P<0.05);实验组和干预组中12h时高于1h时(P<0.05),24h时高于12h时(P<0.05),48h时高于24h时(P<0.05)。 4.实验组小鼠各时相点血清NT-ProBNP水平均高于干预组及对照组(P<0.05),干预组各时相点高于对照组(P<0.05);实验组和干预组中12h时高于1h时(P<0.05),24h时高于12h时(P<0.05),48h时高于24h时(P<0.05)。 5.相关性分析显示:小鼠心肌病变积分分别与心肌TNF-α表达和血清NT-proBNP水平呈显著正相关(r=0.728和r=0.647,P<0.05);小鼠血清cTnT水平分别与心肌TNF-α表达和血清NT-proBNP水平呈显著正相关(r=0.666和r=0.529,P<0.05);小鼠心肌TNF-α表达与血清NT-proBNP水平呈显著正相关(r=0.575,P<0.05)。 结论: 1.蝮蛇毒可致小鼠急性心肌损伤,,心肌TNF-α蛋白表达升高,血清cTnT水平和血清NT-ProBNP水平增高,并且随着时间的延长,心肌损伤越严重,其表达越高。 2. TNF-α抑制剂能降低蝮蛇毒介导的心肌损伤程度、心肌TNF-α蛋白的表达、血清cTnT水平和血清NT-ProBNP水平。 3. TNF-α的过度表达可能是蝮蛇毒介导的心肌损伤及NT-proBNP合成与释放增加的机制之一。
[Abstract]:Aim: to observe the expression of NT-proBNP,TNF- 伪 and myocardial injury mediated by Agkistrodon acutus venom, and to explore the mechanism of myocardial injury mediated by Agkistrodon halys venom. Methods: 1.96 mice were randomly divided into 12 groups with 8 mice in each group. There were three groups: saline (control group), normal saline (experimental group) and TNF- 伪 inhibitor of Agkistrodon acutus venom (intervention group). The poisoning time was set at 4 time points: 1 h, 12 h, 24 h, 48 h. two銆
本文编号:2490027
[Abstract]:Aim: to observe the expression of NT-proBNP,TNF- 伪 and myocardial injury mediated by Agkistrodon acutus venom, and to explore the mechanism of myocardial injury mediated by Agkistrodon halys venom. Methods: 1.96 mice were randomly divided into 12 groups with 8 mice in each group. There were three groups: saline (control group), normal saline (experimental group) and TNF- 伪 inhibitor of Agkistrodon acutus venom (intervention group). The poisoning time was set at 4 time points: 1 h, 12 h, 24 h, 48 h. two銆
本文编号:2490027
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