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青兰有明显的鎮咳不喘作用,现已广泛地应用于临床上。感冒和流感等病毒感染是诱发慢性气管炎的重要因素。控制呼吸道病毒感染对于防治感冒、气管炎有很大意义。为了了解青兰有否抗病毒感染的作用,我们用Ⅰ型副流感病毒(仙台)感染小白鼠,对青兰的作用进行观察,同时用气管炎菌苗对比观察,发现它们有一定的保护作用。但青兰抗病毒感染的能力有多大,作用机制如何,对仙台病毒以外的其它病毒有无作用等等,还没有实验报道。我们遵照伟大领袖毛主席关于“中国医药学是一个伟大的宝库,应当努力发掘,加以提高”的教导,对于青兰的抗病毒作用做了进一步的观察。被试病毒除用腺病毒3型以外,还选用了较易形成空斑的两种病毒。在空斑试验中同时用黄芪做对比观察。
Qinglan has obvious antitussive and anti-asthmatic effects and is now widely used in clinical practice. Cold and flu virus infections are important factors in the induction of chronic bronchitis. Control of respiratory viral infections is of great significance for the prevention and treatment of colds and bronchitis. In order to understand whether Cynthia has the effect of antiviral infection, we infected mice with type I parainfluenza virus (Sendai) and observed the effects of Qinglan. At the same time, they were compared with bronchitis bacterin and found that they have a certain protective effect. . However, there is no experimental report on the ability of Cynia to resist virus infection, how it works, and whether it has any effect on viruses other than Sendai virus. We follow the guidance of the great leader Chairman Mao on “China’s Pharmacy is a great treasury, we should strive to discover and improve it.” We have further observed the antiviral effects of Qinglan. In addition to adenovirus type 3, the viruses tested also used two types of viruses that were more likely to form plaques. In the plaque assay, astragalus was used for comparison observation.