卡泊芬凈霧化吸入防治侵襲性肺曲霉病藥效學(xué)與安全性的動(dòng)物實(shí)驗(yàn)研究
[Abstract]:Invasive pulmonary aspergillosis (IPA) mostly occurred in the severe immunodeficiency population, and the mortality was high. Antifungal agents have recently received extensive attention through the use of aerosolized inhalation. Compared with the system, the drug can reach the high drug concentration of the lung, and the toxicity of the drug system is reduced due to the less entry of blood. The purpose of this study was to establish an IPA model for immunosuppression mice and to evaluate the efficacy and safety of nebulization in the prevention and treatment of ipa. It is mainly divided into the following three parts: Sub-point:1. The model of invasive pulmonary aspergillosis in immunosuppressed mice Objective: The animal experiment was widely used in the diagnosis and treatment of invasive pulmonary aspergillosis (IPA). Method: After the immunosuppression treatment of mice with cyclophosphamide and dexamethasone, the spore suspension of Aspergillus fumigatus was dropped into the trachea of the tracheal intubation, and the mice were observed by tissue pathology and the mice were observed. Survival-time curve. The method of plate colony counting is used to compare the actual intake of the tracheal intubation and the traditional nasal drop method. Spore volume of the rat lung. Results: The tracheal intubation can be successful The mouse IPA model was established. The death rate was 55% in the first week of the mouse, and the count of the lung tissue homogenate plate after 24 hours of inoculation showed that the amount of the spore entering the lung was 5.17 and 0.32 CFU (1 g)/ g of the lung tissue, whereas the conventional nasal drop method was only 3.82 and 0.49 CFU. (1 g)/ g lung tissue. Conclusion: The tracheal intubation method successfully established the mouse IPA model. suitable for IPA-related studies.2. Capofungin Pharmacodynamic Study on the Prevention and Treatment of Invasive Pulmonary Aspergillosis: by the Animal Experiment A preliminary study was made on the control and control of ipa. Methods: The model of IPA in immunosuppression mice was given. The administration strategies were divided into simple treatment and prevention + treatment, and the standard treatment _ amphotericin B was injected into the abdominal cavity. And the control group, and the drug was continuously applied to the 7th day after the infection. The results showed that, compared with the standard treatment _ amphotericin B, the effect of nebulization on the pulmonary tissue fungal load of the mice was effectively reduced compared with that of the standard treatment _ amphotericin B. Can be used for preventing and treating the administration of the mouse, and the mouse life can be effectively improved. Conclusion: The experimental results of the animal experiment prove that the Capofene is pure and fog. The administration of inhalation is an effective administration of the prevention of IPA Methods.3. The purpose of the local safety study of the administration of the aerosol inhalation of the caspofungin: to observe the continuous multiple fog Methods: ICR mice were divided into three groups, the high-dose group was nebulized for 2 hours a day, and the low-dose group was atomized daily. The time is 1 hour, and the normal saline control group is set, and the mice in each group are continuously used for 7 days. The lung tissue pathology of each group of mice is examined and scored, and the lung tissue is extracted The expression of inflammatory factors in lung tissue of each group was detected by fluorescence quantitative PCR of RNA. Results: There was no significant difference in the pathological score of lung tissue after the end of the drug administration. So as to lead to the activation of the inflammatory factors such as IL-1, IL-6, TNF-1, and the like in the lung tissue. In conclusion, the drug of the anti-fungal drug is used for the local formation of higher drug concentration in the lung tissue. In order to prevent and treat the effect and safety of ippofungin in the prevention and treatment of ipa, the effect and safety of the aerosolized caspofungin in the prevention and treatment of ipa were observed, and the treatment with the standard therapeutic drug _ amphotericin B was observed. Compared with the method, the survival rate of the mice can be improved when the atomized caspofungin is used as a preventive medicine, and
【學(xué)位授予單位】:南京大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類號(hào)】:R519
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