【摘 要】
：
实验在34只氨基甲酸乙酯麻醉、断双侧颈迷走神经、肌松、人工通气的家兔上进行.单侧和双侧B(o)tzinger复合体(B(o)t.C)内微量注射抑制性神经递质甘氨酸及其受体阻断剂士的宁,
【机 构】
：
聊城市人民医院神经外科,山东医科大学基础医学院生理学教研室
论文部分内容阅读
实验在34只氨基甲酸乙酯麻醉、断双侧颈迷走神经、肌松、人工通气的家兔上进行.单侧和双侧B(o)tzinger复合体(B(o)t.C)内微量注射抑制性神经递质甘氨酸及其受体阻断剂士的宁,观察膈神经放电的变化.结果如下:(1)单侧注射甘氨酸使呼吸频率增加,呼气相膈神经出现放电活动;(2)双侧B(o)t.C注射甘氨酸后呼气相消失,膈神经呈无节律紧张性放电,幅度为前对照吸气放电幅度的40%～70%.士的宁能竞争性阻断甘氨酸的效应;(3)双侧B(o)t.C注射士的宁后,呼吸频率减慢,呼气时程延长,膈神经放电幅度降低,吸气时程无明显变化.上述结果提示:B(o)t.C在呼气相的形成和维持中起关键作用.
其他文献
This study examined the effect of insulin on the expression of very low density lipoprotein receptor (VLDLR) subtypes of SGC7901 cells and discussed its biologi
Objective to explore dynamic characteristics of the HIV mother to child transmission(MTCT)epidemic in China.Methods A deterministic dynamic transmission model w
A series of 2-aryl-5-alkyl-7-methoxylbenzo[b]furan derivatives have been synthesized by utilizing the coupling of methyl 3-methoxy-4-hydroxy-5-bromocinnamate wi
Areverse headgear is thought to be an effective treatment approach for skeletal class Ⅲ malocclusion with retruded maxilla. Clinical studies have shown that th
The twisters for composed of anisotropic material were designed and manufactured.And two kinds of directional-composites were made:one was fiber direction verti
Objective Western blotting (WB; immunoblotting) is a widely used tool for the serodiagnosis of Lyme borreliosis (LB), but so far, no generally accepted criteria
Increased plasma total homocysteine (tHcy) and high sensitivity C-reactive protein (hsCRP) levels are independent risk factors for cardiovascular disease. Howev
Objectives This paper aims to investigate the uterotrophic activities of lactational exposure to combination of soy isoflavones (SIF) and bisphenol A (BPA) and
Together with an increasingly aging world population there is also an increasing prevalence of atherosclerosis. Renal artery stenosis (RAS) is one of the system