郑州地区支气管哮喘的病因学和临床实验研究 |
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引用本文: | 赵陇 王和平. 郑州地区支气管哮喘的病因学和临床实验研究[J]. 河南医学研究, 1998, 7(2): 132-136 |
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作者姓名: | 赵陇 王和平 |
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作者单位: | 河南省医学科学研究所 |
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基金项目: | 河南省医学科学院科研基金 |
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摘 要: | 目的:进行郑州地区支气管哮喘的病因学和临床实验研究。方法:通过曝片调查本地区气传致敏花粉散布规律;经皮试了解致敏原与哮喘发病的关系;采用ELISA法测定不同病型、病期哮喘病人的血清IgE水平;检测实验性哮喘豚鼠血和肺组织LPO、SOD水平变化及PGE1和氨茶硷的影响,并对2例顽固性哮喘患者静脉点滴PGE1观察疗效。结果:郑州地区空气中全年均有花粉散布并出现两次飘散高峰,导致哮喘的季节性发病或加重。909%的外源性哮喘患者皮试阳性,花粉、霉菌、屋尘和螨为主要致敏原。外源性哮喘及发作期患者血清IgE水平明显高于内源性哮喘及缓解期病人。PGE1能抑制哮喘豚鼠肺组织LPO水平升高,对顽固性哮喘患者静脉点滴PGE1疗效显著。结论:支气管哮喘与花粉飘散及致敏原消长密切相关,血清IgE含量肺组织LPO水平的升高对支气管哮喘发病有重要意义。PGE1对治疗顽固性哮喘是一种具有发展前景的药物。
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关 键 词: | 支气管哮喘;气传花粉;过敏原;血清IgE;脂质过氧化物;超氧化物歧化酶;前列腺素E_1 |
Dual Effects of Ligustrazine on Myocardium inGuinea Pig Papillary Muscles |
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Abstract: | Objective: The experiment studied the effects of ligustrazine on slow action potentials (SAP) and force of contraction(FC) in guinea pig ventricular papillary muscles.Methods: The electrophysiological methode,the standard glass microelectrode technology.Results: It was found ① Ligustrazine (3.0~30 μmol/L) suppressed the action potential amplitude(APA),the action potential duration (APD).The maximal upstroke velocity (Vmax) and force of contraction (FC) of SAP induced by histamine and FC dose dependently.②Ligustrazin (0.1~3.0 mmol/L)increase APA,APD,Vmax and FC dose dependently.③Enhancement effects of ligustrazin blocked by verapamil.Conclusion: These results suggested that ligustrazin have dual effects on myocardium. |
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Keywords: | ligustrazine action potential force of contraction inward current |
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