Successful Treatment of Erdheim-Chester Disease With Coronary Artery Involvement

Erdheim-Chester disease (ECD) is a rare non-Langerhans histiocytosis and inflammatory myeloid neoplasm with poor prognosis. Symmetric long bone osteosclerosis occurs in nearly all patients, but other organs are often involved. Coronary artery involvement is rare, but was encountered in a patient who experienced angina. Radiologic presentation and histologic findings were consistent with diagnosis of ECD. A soft-tissue mass was found surrounding the right atrium, ascending aorta, and all branches of coronary artery. Interferon-alfa treatment was successful. In conclusion, we recommend coronary artery computed tomography angiography for cardiovascular evaluation of ECD and interferon-alfa to treat ECD.     

Effect of intestinal lymphatic circulation blockage in two-hit rats

INTRODUCTION Multiple organ dysfunction syndrome (MODS) is a common but poorly understood complication in a variety of critical illnesses[1-3]. In recent years, much attention has been paid to the study of MODS, and encouraging progress has been achieved.…     

Haemophilus influenzae forms biofilms on airway epithelia: implications in cystic fibrosis

RATIONALE: Nontypeable Haemophilus influenzae (NTHi) commonly infects patients with cystic fibrosis (CF), especially early in childhood. Bacteria biofilms are increasingly recognized as contributing to bacterial persistence and disease pathogenesis in CF. OBJECTIVES: This study investigated ability of NTHi to form biofilms and its impact on airway epithelia using in vivo and in vitro analyses. METHODS: We evaluated bronchoalveolar lavage fluid from young patients with CF for evidence of NTHi biofilms. To further investigate the pathogenesis of NTHi in respiratory infections, we developed a novel in vitro coculture model of NTHi biofilm formation on polarized human airway epithelial cells grown at the air-liquid interface. MEASUREMENTS AND MAIN RESULTS: In bronchoalveolar lavage fluid samples from young, asymptomatic patients with CF, we found morphologic evidence suggestive of NTHi biofilm formation. In addition, 10 clinical NTHi isolates from patients with CF formed biofilms on plastic surfaces. NTHi formed biofilms on the apical surface of cultured airway epithelia. These biofilms exhibited decreased susceptibility to antibiotics and were adherent to epithelial surfaces. Airway epithelial cells remained viable throughout 4 d of coculture, and responded to NTHi with nuclear factor-kappaB signaling, and increased chemokine and cytokine secretion. CONCLUSIONS: NTHi formed adherent biofilms on the apical surface airway epithelia with decreased susceptibility to antibiotics, and respiratory cells exhibited inflammatory and host defense responses-evidence of a dynamic host-pathogen interaction. The data presented here have implications both for understanding early CF lung disease pathogenesis and for the treatment of early, asymptomatic colonization of patients with CF with H. influenzae.     

腰椎间盘退变中的细胞因子及炎症递质:文献分析与临床应用

背景:通过分析细胞因子及炎症递质对腰椎间盘退变的影响,有助于深入认识腰椎间盘退变的发病机制,指导临床对腰椎间盘退变疾病的预防和治疗。目的:结合临床对腰椎间盘退变中细胞因子及炎症递质进行研究,并对其发展趋势进行多层次探讨分析。方法:以电子检索方式对CNKI数据库学术期刊2002-01/2011-12收录有关腰椎间盘退变中细胞因子及炎症递质研究的文献进行分析,采用检索词主要为"腰椎间盘退变;细胞因子;炎症介质",运用数据库的分析功能和Excel软件图表的功能分析数据特征。结合2009-01/12在解放军第306医院骨科进行腰椎间盘突出症治疗的患者67例,治疗方法为单节段椎管减压,椎间融合器植入植骨融合内固定,对术中切除的间盘进行镜下和免疫组织化学分析。结果与结论:在CNKI数据库学术期刊2002/2011收录的文献中,共检索到76篇与腰椎间盘退变细胞因子及炎症递质研究相关的文献,文献数量处于上升趋势。腰椎间盘退变中细胞因子及炎症递质研究检测方法以免疫组织化学为主,对炎症递质的表达定量定性准确性研究较多。可见,细胞因子及炎症递质在椎间盘退变的复杂病理过程中具有重要的调控作用。     

载异烟肼利福平聚乳酸纳米粒的制备及体外释药

背景:微载体药物因具有靶向性、控释性、稳定性、更好的安全性备受关注.目的:观察载异烟肼利福平两种抗结核药于同一聚乳酸纳米粒的给药系统及体外释放特性.方法:采用改良的自乳化二元溶剂扩散法制备载异烟肼和利福平纳米粒,亚微粒径分析仪测定纳米粒粒径及分布,透射电镜观察其形态;高效液相色谱仪建立测定异烟肼、利福平的载药量和包封率;以磷酸盐缓冲液为释放介质,观察载异烟肼和利福平纳米粒的体外释药特性.结果与结论:载利福平和异烟肼纳米粒表面完整光滑,无明显粘连现象,纳米粒均匀度好.亚微粒径分析仪测定纳米粒平均粒径80.4 nm.异烟肼载药量为(15.95±1.34)%,包封率为(5.01±0.17)%;利福平载药量为(4.66±0.97)%,包封率为(4.05±0.18)%.体外释药结果显示纳米粒的体外释药过程较平稳.突释期纳米粒中异烟肼释放度为15.22%,到3 d累积释放度可达95.6%;利福平释放度为9.26%,到3 d累积释放度可达90.3%.提示采用改良的自乳化二元溶剂扩散法制备载异烟肼和利福平纳米粒,所得载药纳米粒的粒径小且较均匀.纳米粒体外释药过程较平稳,无明显突释现象.     

T helper 1 cells and interferon gamma regulate allergic airway inflammation and mucus production.

CD4 T helper (Th) type 1 and Th2 cells have been identified in the airways of asthmatic patients. Th2 cells are believed to contribute to pathogenesis of the disease, but the role of Th1 cells is not well defined. In a mouse model, we previously reported that transferred T cell receptor–transgenic Th2 cells activated in the respiratory tract led to airway inflammation with many of the pathologic features of asthma, including airway eosinophilia and mucus production. Th1 cells caused inflammation with none of the pathology associated with asthma. In this report, we investigate the role of Th1 cells in regulating airway inflammation. When Th1 and Th2 cells are transferred together into recipient mice, there is a marked reduction in airway eosinophilia and mucus staining. To address the precise role of Th1 cells, we asked (i), Are Th2-induced responses inhibited by interferon (IFN)-γ? and (ii) Can Th1 cells induce eosinophilia and mucus in the absence of IFN-γ? In IFN-γ receptor^−/− recipient mice exposed to inhaled antigen, the inhibitory effects of Th1 cells on both airway eosinophilia and mucus production were abolished. In the absence of IFN-γ receptor signaling, Th1 cells induced mucus but not eosinophilia. Thus, we have identified new regulatory pathways for mucus production; mucus can be induced by Th2 and non-Th2 inflammatory responses in the lung, both of which are inhibited by IFN-γ. The blockade of eosinophilia and mucus production by IFN-γ likely occurs through different inhibitory pathways that are activated downstream of Th2 cytokine secretion and require IFN-γ signaling in tissue of recipient mice.     

100份护理病历中护理措施存在的问题及对策

随机抽取我科１９９７年３月—１１月１００份整体护理病历,对其中８１４个护理问题对应的４６５５条护理措施进行分析,结果陈述不清楚、欠条理的２６５条（５．７％）,措施可行性差１４７条（３．２％）,护理措施与护理问题不符１０７条（２．３％）,措施缺乏科学依据８８条（１．９％）,护理措施与医疗措施混淆２０１条（４．３％）。提出：正确掌握护理措施意义及范畴,遵循护理措施与护理问题一致的原则,从实际出发,制定切实可行的有效的护理措施。