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Effects of Combination Therapy with Levamlodipine and Bisoprolol on Stroke in Rats

机译:左旋氨氯地平和比索洛尔联合治疗对大鼠中风的影响

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Summary Aim To examine the effects of combination with levamlodipine and bisoprolol on stroke in rats. Methods For acute study, Systolic blood pressure ( SBP ) and heart period ( HP ) were monitored in conscious stroke prone‐spontaneously hypertensive rats ( SHR ‐ SP ) and sinoaortic denervation ( SAD ) rats before and after intragastric administration of either drug at a single dose. Rats were subjected to middle cerebral arterial occlusion ( MCAO ) half an hour after drug administration; sacrificed 24 h later to measure the infarct size. For long‐term study, drugs (either alone or in combination) were delivered via food to SHR ‐ SP . The survival time was recorded. Results SBP was significantly reduced by combination therapy both in SHR ‐ SP and SAD rats. Neutralization on heart rate ( HR ) was observed in combination. The drug combination increased baroreflex sensitivity ( BRS ) and reduced SBP variability ( SBPV ). In chronic experiments, the lifespan of SHR ‐ SP rats exposed to the drug combination was longer than that in rats exposed to either drug alone. The infarct area was the smallest in subjects receiving drug combination in SD rats both with and without SAD . Conclusion Combined use of levamlodipine and bisoprolol produced better protection against stroke.
机译:摘要目的探讨左旋氨氯地平和比索洛尔联合用药对大鼠中风的影响。方法为进行急性研究,在一次胃内给药两种药物之前和之后,对有意识的中风易发性自发性高血压大鼠(SHR-SP)和窦房神经去神经支配(SAD)大鼠监测收缩压(SBP)和心脏周期(HP)剂量。给药后半小时,大鼠大脑中动脉闭塞(MCAO)。 24小时后牺牲以测量梗塞面积。为了进行长期研究,药物(单独或组合使用)通过食品输送到SHR-SP。记录生存时间。结果SHR-SP和SAD大鼠的联合治疗均显着降低了SBP。结合观察到对心率(HR)的中和。药物组合增加了压力反射敏感性(BRS)和降低的SBP变异性(SBPV)。在慢性实验中,暴露于该药物组合的SHR-SP大鼠的寿命比单独暴露于任一药物的大鼠更长。在有和没有SAD的SD大鼠中,接受药物组合的受试者的梗塞面积最小。结论左旋氨氯地平与比索洛尔合用可更好地预防中风。

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