首页> 外文期刊>Life sciences >Local somatothermal stimulation inhibits the motility of sphincter of Oddi in cats, rabbits and humans through nitrergic neural release of nitric oxide.
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Local somatothermal stimulation inhibits the motility of sphincter of Oddi in cats, rabbits and humans through nitrergic neural release of nitric oxide.

机译:局部体温刺激通过一氧化氮的神经能神经释放抑制猫,兔子和人类中Oddi括约肌的运动。

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To examine whether and how local somatothermal stimulation inhibits the function of the sphincter of Oddi (SO) in humans and in animals with different types of SO, we measured the activity of SO in anesthetized cats and rabbits by using continuously perfused open-tip manometric methods. Local somatothermal stimulation was achieved by applying an electroheating rod 0.5 cm away from the skin area near the right subcostal region. A heating pad was applied to the corresponding area in patients undergoing endoscopic retrograde cholangiopancreatography and biliary manometry. The motility of the biliary tract in cats, in terms of gall bladder pressure, tonic and phasic contraction pressure and frequency of SO before and during local heat were significantly different, respectively. The local heat-induced SO relaxation was not inhibited by pretreatment with atropine, propranolol, phentolamine or anti-cholecystokinin-octapeptide, but was almost completely blocked by infiltration of local anesthetics. Pretreatment with a nitric oxide synthesis inhibitor also blocked the relaxation, which was reversed by pretreatment with L-arginine, but not by D-arginine. The inhibition of SO motility by local heat in rabbits was also blocked by pretreatment with L-NAME, and this blockade was reversed by L-arginine. Application of local heat on patients demonstrated obvious inhibitory SO responses. We conclude that local somatothermal stimulation inhibits the SO motility in animals with different types of SO through the activation of heat-sensitive neural release of nitric oxide. This procedure may represent a simplified approach for the treatment of diseases with hypofunction of the L-arginine/NO pathway.
机译:为了检查局部体温刺激是否以及如何抑制人和具有不同类型SO的动物中Oddi(SO)括约肌的功能,我们通过使用连续灌注的开放式测压法测量了麻醉的猫和兔子中SO的活性。 。局部体温刺激是通过在距离右肋下区域附近皮肤区域0.5 cm处应用电加热棒实现的。在接受内镜逆行胰胆管造影和胆管测压的患者的相应区域使用加热垫。猫的胆道运动,就胆囊压力,强直和相收缩压力以及局部加热之前和期间的SO频率而言分别显着不同。阿托品,普萘洛尔,酚妥拉明或抗胆囊收缩素-八肽预处理不会抑制局部热诱导的SO舒张,但几乎完全被局部麻醉药的渗透所阻止。用一氧化氮合成抑制剂进行的预处理也阻断了松弛,通过用L-精氨酸进行预处理可以逆转这种松弛,但是用D-精氨酸则不能。用L-NAME预处理也可阻断兔局部受热对SO运动的抑制作用,L-精氨酸可逆转这种抑制作用。在患者身上施加局部热量显示出明显的抑制性SO反应。我们得出的结论是,局部体热刺激通过热敏感神经释放一氧化氮的激活来抑制具有不同类型SO的动物的SO运动。该程序可能代表了一种治疗L-精氨酸/ NO通路功能低下的疾病的简化方法。

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