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自发电活动     
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  spontaneous electric activity
     INFLUENCE OF SODIUM SELENITE ON SPONTANEOUS ELECTRIC ACTIVITY OF GUINEA PIG AND RABBIT HEART
     亚硒酸钠对豚鼠及家兔心脏自发电活动的影响
短句来源
     The results showed that TFH inhibited oscillatory—after potentials induced by ouabain,decreased the rate of spontaneous electric activity caused by ouabain. shortened the action potential duration of 50% repolarization and reduced the contractile force in guinea pig papillary muscles .
     结果表明,沙棘总黄酮可抑制哇巴因诱发的心室肌振荡后电位,降低哇巴因诱发的心室肌自发电活动频率,使心室乳头状肌动作电位复极50%的时程(APD_(50))缩短,同时还观察到在沙棘总黄酮的作用下,乳头状肌收缩力下降。
短句来源
     The 7 patients with abnormal H reflex all restored normal and the 6 cases producing spontaneous electric activity did not have any obvious change.
     H反射异常者7例,全部恢复正常; 出现自发电活动者6例,无明显变化。
短句来源
     Conclusion:LBP can enhance the spontaneous electric activity of hippocampus, implying therefore that LBP could potentiate the cognition ability
     (2 )对麻醉大鼠海马齿状回基础诱发电位及高频刺激引发海马齿状回长时程增强现象没有影响。 结论 :LBP对海马自发电活动有促进作用 ,提示LBP有潜在的促智作用。
短句来源
  spontaneous electrical activity
     The effects of intracarotid injection of capsaicin on spontaneous electrical activity of nucleus paragigantocellularis lateralis (PGL) neurons in rostral ventrolateral medulla (RVLM) were examined in 35 anesthetized rats with sino aortic denervation by using extracellular recording technique.
     在35只切断两侧缓冲神经的麻醉大鼠,应用细胞外记录的电生理学方法,观察颈总动脉注射辣椒素(capsaicin)对延髓腹外侧头端区(RVLM)巨细胞旁外侧核(PGL)自发电活动的影响。
短句来源
     The effects of intraventricular injection and epicardial application of adenosine on spontaneous electrical activity of nucleus paragigantocellularis lateralis (PGL) neurons in rostral ventrolateral medulla(RVLM) were examined in 35 anesthetized rats with sinoaortic denervation and vagotomy.
     在35只切断两侧缓冲神经和迷走神经的麻醉大鼠,观察心室内注射腺苷和心外膜涂布腺苷对延髓腹外侧头端区PGL神经元自发电活动的影响。
短句来源
     To observe the effect of intracarotid administration of adrenomedullin (AM) on the spontaneous electrical activity of area postrema (AP) neurons, 78 spontaneous active units were recorded from 63 sino-aortic denervated Sprague-Dawley rats using extracellular recording technique.
     在63只切断两侧缓冲神经的麻醉sprague-Dawley大鼠,应用细胞外记录的电生理学方法,观察颈内动脉注射肾上腺髓质素(adrenomedullin,AM)对最后区(area postrema,AP)神经元自发电活动的影响。
短句来源
     Spontaneous electrical activity of myometrium was recorded with bipolar stainless steelelectrodes in 48 pregnant rabbits during pregnancy,parturition and postparturition. Theresults showed that there was regularity of electrical activity. During middle pregnancy,isolated action potential was dominant(62.6±6.3 times/10 min)and the burst was recordedoccasionally(2.5±1.5/10min).
     用不锈钢记录电极对妊娠中期、妊娠晚期、分娩期和分娩后的48只家兔子宫平滑肌自发电活动进行在体和离体测定的记录表明,从妊娠中期至分娩后期,自发电活动存在着一定的规律性:先以单波为主(62.6±6.3个/10分),偶有爆发波(2.5±1.5个/10分);
短句来源
     STUDY OF SPONTANEOUS ELECTRICAL ACTIVITY OF MYOMETRIUM IN PREGNANT RABBITS
     孕兔子宫平滑肌自发电活动的研究
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  spontaneous action potential
     Objective To investigate the spontaneous action potential and the feature of induced action potential on aortic vestibule in the spontaneously hypertensive rats(SHR) and saline hypertensive rats(SDsa) with left ventricnlar hypertrophy.
     目的 观察不同类型高血压大鼠引起的心肌肥厚时 ,左心室流出道自发电活动及诱发电位特征。
短句来源
  spontaneous electrical activities
     EFFECT OF FLUORIDE ON THE SPONTANEOUS ELECTRICAL ACTIVITIES OF CULTURED MYOCARDIAL CELLS
     氟对培养心肌细胞自发电活动的影响
短句来源
     AGING CHANGES OF SPONTANEOUS ELECTRICAL ACTIVITIES AND RESPONSES TO NOREPINEPHRINE OF MAGNOCELLULAR PARAVENTRICULAR NUCLEUS NEURONS IN RAT HYPOTHALAMUS
     大鼠下丘脑室旁核大细胞自发电活动及对去甲肾上腺素反应的增龄性变化
短句来源
     After the segmental ablation at the veno-atiral junction with the end-point of disappearance of PV and SVC potentials during sinus rhythm and atrial pacing,16 veins(44%)demonstrated a spontaneous electrical activities,among which 11 veins showed a rhythm with an average rate of 35 bpm.
     以心房 大静脉传入阻滞为终点行大静脉口部消融后 ,16根 (4 4 % )记录到大静脉内自发电活动 ,其中 2根呈偶发的单一电活动 ,11根呈平均频率 (38± 12 )次 /min的缓慢节律 ,3根呈偶发的由 3~ 6个电位组成的短阵快速节律。
短句来源

 

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      spontaneous electrical activity
    Effects of Hypoxic Hypoxia on the Spontaneous Electrical Activity of the Human Brain
          
    Effect of chronic administration of ethanolic extract of Acorus calamus (AC) was studied on spontaneous electrical activity and monoamine levels of brain.
          
    At 10-6 M no effects could be observed on the spontaneous electrical activity in taenia coli.
          
    The metabotropic receptor antagonist (R,S)-α-methyl-4-carboxyphenylglycine (MCPG) failed to affect the spontaneous electrical activity.
          
    In single mouse α-cells this action was not associated with a change in spontaneous electrical activity and resulted from a reduction in the rate of Ca2+-dependent exocytosis.
          
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      spontaneous action potential
    Acetylcholine induced hyperpolarization and inhibited the spontaneous action potential.
          
    Threshold for synaptically-evoked somatic action potentials was decreased following either nifedipine or nimodipine application, often resulting in spontaneous action potential activity.
          
    Spontaneous action potential bursts associated with low threshold calcium spikes (LTS) occur in multiple human lateral thalamic nuclei, each with different physiologic characteristics.
          
    Nifedipine (0.1-1 μM) and Cd2+ (0.1-1 mM) blocked all spontaneous action potential discharge and depolarized the membrane to near -40 mV.
          
    From the above results, we concluded that the spontaneous action potential in the early phases of cardiogenesis is characterized as a Ca2+-dependent action potential.
          
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    Salvia compositus is the water extract of a mixture of the Chinese medicinal herbs Salvia Miltiorrhiza and Delbergia Odorifera, which had been used for the treatment of coronary heart diseases including myocardial infarction. Usually the subjective complaim of patients suffering from infarction could be somehow relieved promptly after intravenous injection of Salvia compositus This paper presents the results of experiments concerned with the analysis of the possible mechanisms of this effect. Salvia compositus...

    Salvia compositus is the water extract of a mixture of the Chinese medicinal herbs Salvia Miltiorrhiza and Delbergia Odorifera, which had been used for the treatment of coronary heart diseases including myocardial infarction. Usually the subjective complaim of patients suffering from infarction could be somehow relieved promptly after intravenous injection of Salvia compositus This paper presents the results of experiments concerned with the analysis of the possible mechanisms of this effect. Salvia compositus exhibited no obvious effect on the tension and the frequency of contraction of the heart in situ, the ischemic changes of the electrocardiogram elicited by the ligation of the anterior descending branch of the left coronary artery, the membrane and action potential of the myocardial cells and the oxygen consumption of the slices and homogenates of myocardial cells and brain tissues as well as the slices of the diaphragm. However, the drug showed marked effects on the electrical activities of the cerebral cortex, including depression of the spontaneous activities, increase of the threshold of the repetitive discharges elicited by direct cortical stimulation and enhancement of the sensory evoked cortical responses. Thus it seems that Salvia compositus exerts its prompt clinical curative effects via its depressant effect on the cerebral cortex.

    本文报告我们对冠心病患者使用复方丹参后较快(如数小时内)出现的疗效的作用机理实验分析的结果。所用药物内含丹参和降香,静脉推注复方丹参一次或每隔十分钟至一小时反复推注数次,对大白鼠和兔在位心脏的收缩张力和心率都没有影响。对因呼吸通气量不足或结扎冠状动脉分支引起的心电图缺血性变化也没有作用。药物对离体豚鼠在心室乳头肌的膜电位、动作电位、心肌和脑切片、匀浆以及膈肌切片的氧耗量都没有影响。药物延长小白鼠在密闭容器中的存活时间的作用,可以为不到麻醉剂量的戊巴比妥钠所模拟。药物使免大脑皮层自发电活动减小,重复刺激引起的后发放的阈值提高,感觉刺激的诱发电位增大。从以上这些结果来看,我们认为复方丹参是通过它对大脑皮层的压抑作用发挥其快速疗效的。

    Anisodine was administered to 4 groups of rabbits intraventricularly (5, 10, 15 and 20 mg). It was observed that 5 mg doses were effective to make the animals lose their righting reflexes. Increasing the dosage prolonged and aggravated the central depressant effect of anisodine.Following administraton of anisodine (10 mg), the duration of loss of righting reflex lasted 25.0±2.6 minutes. The combined use of anisodine with physostigmine (0.2mg i. v.), noradrenaline or adrenaline (100μg intraventricularly) induced...

    Anisodine was administered to 4 groups of rabbits intraventricularly (5, 10, 15 and 20 mg). It was observed that 5 mg doses were effective to make the animals lose their righting reflexes. Increasing the dosage prolonged and aggravated the central depressant effect of anisodine.Following administraton of anisodine (10 mg), the duration of loss of righting reflex lasted 25.0±2.6 minutes. The combined use of anisodine with physostigmine (0.2mg i. v.), noradrenaline or adrenaline (100μg intraventricularly) induced loss of righting reflex of short duration, 15.1±3.2, 11.0±1.4 and 14.8±3.1 minutes, respetively (P<0.01); and at the same time, the central depressant effect became less marked. On combination with regitine (1 mg intraventricularly), the duration of loss of righting reflex was prolongted to 50.0+10 minutes (P<0.05) with the central depressant effect potentiated.Following intraventricular anisodine (0.4 mg), a gradual EEG change from low voltage rapid wave to high voltage slow wave was observed lasting for about 6 hours. Additional intravenous physostigmine 0.2 mg/kg, given 15 minutes after the administration of anisodine, produced a reappearance of low voltage rapid wave lasting for about 30 minutes, while the similar use of noradrenaline or adrenaline (150 μg intraventricularly) gave a trasient reappearance, lasting 3~4 minutes only.These results suggested that the central depressant effect of anisodine can be antagonized by physostigmine and adrenomimetics, while regitine is synergistic.

    将樟柳碱注入家兔侧脑室,可引起翻正反射消失,皮层自发电活动呈现不规则高幅慢波,表明该药有中枢抑制作用。在一定剂量范围内,剂量加大,抑制作用增强,维持时间延长。毒扁豆碱、去甲肾上腺素、肾上腺素能拮抗樟柳碱的中枢抑制作用,而苄胺唑啉则与之有协同作用。结果提示樟柳碱的中枢抑制作用,不仅与其抗胆碱作用有关,还可能与其抗肾上腺素能作用有一定关系。

    It has been observed that oxytocin (0.1μ/kg)effects on the spontaneous electrical activity of the rabbit uterine smooth muscle by means of bipolar electrodes in vivo.It has been verifyed that oxytocin is uneffective in middle period of pregnancy and may increase the electrical activity in parturition and post-partum.It is in uterin smooth muscle during parturition and post-partum that oxytocin can increase the frequency and duration of the burst.and individual spikes in the burst.The mechanism of the changes...

    It has been observed that oxytocin (0.1μ/kg)effects on the spontaneous electrical activity of the rabbit uterine smooth muscle by means of bipolar electrodes in vivo.It has been verifyed that oxytocin is uneffective in middle period of pregnancy and may increase the electrical activity in parturition and post-partum.It is in uterin smooth muscle during parturition and post-partum that oxytocin can increase the frequency and duration of the burst.and individual spikes in the burst.The mechanism of the changes of the electrical activity and the relation between the electrical change and the mechanical activity of uterus are simple analysed in this paper.

    用双电极在体记录法观察了催产素对家兔子宫肌自发电活动的影响。证实催产素对妊娠中期子宫肌无效。但可使分娩和娩后子宫肌的自发电活动加强。增加了爆发波的频率、爆发波的时程和其中的峰电位数。本文就其产生机制和对子宫机械活动的相关性也作了初步分析。

     
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