目的 探究艾滋病(AIDS)合并马尔尼菲青霉病(PSM)的感染率,以及常规实验室检查结果和5种抗真菌药物对马尔尼菲青霉菌(PM)的体外抗菌活性。 方法 2006年1月-2009年11月间确诊AIDS患者326例,从其血液、骨髓培养出65株PM,检测该65例患者的血常规、肝功能和肾功能,并对20株酵母相PM进行体外药敏进行分析。 结果 AIDS合并PSM的感染率为19.94%;外周血常规:WBClt;4.0×109/L者48例,HBlt;100 g/L者51例,PLTlt;100×109/L者46例。肝功能检查:ALTgt;40 U/L者49,ASTgt;40 U/L者51例,GGTgt;60 U/L者44例,ALPgt;150 U/L者36例,ALBlt;35 g/L者53例,A/G倒置者50例。肾功能检查:BUNgt;7.2 mmol/L者9例,Crgt;150 μmol/L者4例。20株酵母相PM对5-氟胞嘧啶(5FC)、两性霉素B(AMB)、氟康唑(FCA)、伊曲康唑(ITR)、伏立康唑(VRC)的敏感率分别为75%、90%、80%、90%、90%。 结论 AIDS合并PSM感染率较高;患者感染后外周血WBC、HB、PLT通常低于正常人,肝功能多表现异常,肾功能的改变较少;对PM的治疗以AMB、ITR、VRC为首选。
Objective To assess the quality of current domestic literature about enzyme-linked immunosorbent assay (ELISA) for invasive aspergillosis diagnosis by detecting Aspergillus galactomannan (GM) antigen, and to analyze the sources of bias and variability, as well as the diagnostic ability of different thresholds. Methods Both computer-based online search and manual retrieval were employed to identify relevant articles. The statistical information and quality of science were assessed and classified. The data were analyzed using Meta Disc 1.4 software. The best cutoff value for defining a positive test result was selected by summarizing the following statistical indicators as sensitivity, specificity, likelihood ratio (LR) and summary receiver operating characteristic curve (SROC curve), and by calculating the area under the curve (AUC) as well. Results A total of 20 studies among 2658 literatures were included in accordance with the inclusion criteria, and were divided into different groups based on different cutoff values. Though heterogeneity tests showed no threshold effect, and there were other reasons of heterogeneity. So the data were analyzed by random effects model. The results showed that, compared with other groups, the one with cutoff value set at 0.7 (AUC=0.9456, Q= 0.884 6) showed the best accuracy in diagnosing. Conclusion ELISA detection of Aspergillus GM antigen with cutoff value set at 0.7 has important significance in the early diagnosis of invasive aspergillosis, and it can be conducive to reduce mortality in patients at high risk for Aspergillus infection.
Bronchiectasis is a heterogeneous disease characterized by abnormal expansion of the bronchi, manifested by cough, sputum, and recurring lung infections. As one of the common fungi of lung infection, aspergillus can not only appear as the outcome of the disease in bronchiectasis, but also as an inducement to participate in the disease progression, and ultimately complicate the course of bronchiectasis. This article describes the susceptibility factors and pathogenic mechanisms of aspergillus in bronchiectasis, and further introduces the diagnosis and treatment status of bronchiectasis combined with aspergillus infection, aiming to clarify the effect of aspergillus infection on bronchiectasis and provide new thinking directions for its clinical diagnosis and treatment.
ObjectiveTo discuss the possibility and safety of video-assisted thoracoscope surgery for pulmonary aspergilloma. MethodsWe retrospectively analyzed the clinical data of 39 patients with pulmonary aspergilloma in Beijing Chaoyang Hospital between June 2009 and May 2014. The patients were divided into two groups according to their operation method including a conventional thoracotomy surgery group (open group, n=11) and a video-assisted thoracoscope pneumonectomy group (VATS group, n=28). There were 8 male patients and 3 female patients with age of 29-64 (50.7±9.7) years in the open group. There were 13 male patients and 15 female patients with age of 20-75 (55.4±15.3) years in the VATS group. We compared clinical effectiveness between the two groups. ResultsThe operations of all patients were performed successfully. There were statistical differences between the two groups in the average length of operative time (P=0.001), the loss of intraoperative blood (P=0.005), and the score of pain (P=0.001). There was no statistical difference in lead flow of postoperative chest (P>0.05) and the time of hospitalization (P>0.05). ConclusionVideo-assisted thoracoscope surgery in the treatment of pulmonary aspergilloma could be feasible, safe, and effective based on our study. It is worth of clinical application and popularization.
Objective To explore the effects of Aspergillus fumigatus(A. fumigatus) spores on airway inflammation and responsiveness in asthmatic rats.Methods Seventy male Wistar rats were randomly divided into Ⅰ and Ⅱ groups(n=35 in each group),then Group Ⅰ and Group Ⅱ were subdivided into a normal control group(n=5),an asthma group(n=10),a spores-treated control group(n=10),and a spores-treated asthma group(n=10).The rats were sensitized to ovalbumin(OVA) and challenged with aerosol OVA to establish the asthma model.The effects of A. fumigatus spores on asthmatic rats before and after OVA aerosol challenging were investigated in Group Ⅰ and Group Ⅱ,respectively.The parameters associated with bronchial epithelial damage were observed by total protein concentration in BALF measured by BCA method.Total and differential cell counts in BALF were also counted.The airway resistance and airway responsiveness were calculated by transpulmonary pressure and gas flow rate.Results In Group Ⅰ,the total protein in BALF in the asthma group treated with A. fumigatus spores before OVA challenging(Group CA) was increased remarkably compared to the asthma group(Group A1)[(1.125±0.254)μg/mL vs(0.825±0.173)μg/mL,Plt;0.01].The nonspecific airway resistances induced by different concentration of acetylcholine in Group CA [(0.997±0.196)cm H2O•mL-1•s-1,(1.123±0.142)cm H2O•mL-1•s-1,(1.130±0.197)cm H2O•mL-1•s-1]were increased significantly compared to Group A1 [(0.655±0.089)cm H2O•mL-1•s-1,(0.687±0.048)cm H2O•mL-1•s-1,(0.821±0.043)cm H2O•mL-1•s-1](all Plt;0.05).In Group Ⅱ,however,the above parameters in the asthma group treated with A. fumigatus spores after OVA challenging(Group AC) were not dramatically increased compared with the asthma group(Group A2)(all Pgt;0.05).The differences in the total and differential cell counts in BALF in Group CA were not remarkable compared to other subgroups in Group Ⅰ(all Pgt;0.05).But the BALF neutrophil count in Group AC was increased obviously compared to Group A2 [(2.488±0.420)×106 vs (0.936±0.459)×106,Plt;0.05].Conclusion These data indicate that exposure to A. fumigatus spores before challenging causes aggravated epithelial damage and increased airway resistance in an asthma rat model.