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国家自然科学基金(30500229)

作品数:6 被引量:19H指数:2
相关作者:徐峰沈华浩傅燕飚夏靖燕杨燕更多>>
相关机构:浙江大学医学院附属第二医院浙江大学更多>>
发文基金:国家自然科学基金浙江省医药卫生优秀青年科技人才专项科研基金更多>>
相关领域:医药卫生农业科学环境科学与工程更多>>

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肺炎链球菌感染发病机制的研究进展被引量:1
2008年
肺炎链球菌(Streptococcus pneurnoniae)广泛分布于自然界,常寄居于正常人的鼻咽腔中,儿童鼻咽部带菌率可达24%-32%,为细菌性肺炎的主要病原体。尽管强有力的抗生素不断出现,但肺炎链球菌感染仍居世界疾病死因的第6位。肺炎链球菌是社区获得性肺炎最常见的致病菌和急性呼吸窘迫综合征、脑膜炎、脓毒血症休克的重要死因之一。耐药菌株的出现和23价多糖疫苗预防效果的局限性使得深入研究肺炎链球菌发病机制的工作更加紧迫。肺炎链球菌感染性疾病发病复杂,疾病的转归涉及细菌毒力因子和宿主反应的平衡。现将肺炎链球菌的主要结构、毒力因子及宿主的免疫反应综述如下。
徐峰杨燕沈华浩
关键词:肺炎链球菌感染急性呼吸窘迫综合征社区获得性肺炎疾病死因宿主反应细菌性肺炎
Case Report:A case of chylothorax treated curatively with Sapylin, a streptococcus preparation被引量:4
2007年
Chylothorax is an uncommon disease where fatty fluid accumulates within the chest cavity. Conservative manage- ment, including repeated thoracentesis or pleurodesis, seems to be suitable to most cases. Herein, we present a case of efficacious pleurodesis by intrapleural injection of Sapylin, a streptococcus preparation, for the treatment of chylothorax. A 52-year-old non-smoking female farmer was diagnosed as idiopathic chylothorax after we ruled out possible causes including chest trauma, lymphoma, lung cancer, filariasis, tuberculosis, and etc. Two-time intra-thoracic injection of 3 Klinische Einheit (KE) Sapylin achieved rapid and effective control of chylothorax with no severe side effects. Sapylin may facilitate pleurodesis by producing a strong inflammatory response.
XU Zhi-hao WANG Chun-fu ZHANG Yue-qin SHEN Hua-hao XU Feng
关键词:CHYLOTHORAX
介绍一种新的肺组织体外固定液被引量:2
2008年
介绍一种新型的软组织固定液:羟已基哌嗪乙磺酸-谷氨酸介导的具有保护作用的有机溶剂(hepes-glutamic acid buffer mediated organic solvent protection effect,HOPE溶液)。我们将该溶液用于肺组织体外感染模型的保存收到了很好的效果。
夏靖燕徐峰傅燕飚
关键词:肺组织BUFFEREFFECTHOPE
p38丝裂原活化蛋白激酶在不可分型流感嗜血杆菌致人单核细胞炎症反应中的作用
2008年
目的 通过不可分型流感嗜血杆菌(NTHi)与单核细胞相互作用,研究丝裂原活化蛋白激酶(MAPK)信号传导通路在NTHi致人体免疫细胞炎症反应中的作用。方法NTHi为临床分离株,经血清学方法和16SrRNA测序证实。外周血单核细胞来自健康成年人静脉血,分为4组:培养基组、NTHi刺激组、SB203580(p38MAPK抑制剂)干预组和U0126(p44/42MAPK抑制剂)干预组。NTHi与单核细胞共培养1h、4h后收集细胞,用Western blot法检测p38、p44/42 MAPK的磷酸化程度;16h后用流式细胞仪检测细胞表面Toll样受体(TLR)4的表达。预先用SB203580或U0126与单核细胞共孵育1h,然后加入NTHi(感染复数为200),分别在4h、16h后收集上清,用酶联免疫吸附法检测肿瘤坏死因子α(TNF-α)的水平。采用SPSS11.5统计软件,组间比较用t检验,单核细胞TNF-俚的表达用单因素方差分析,组间比较用LSD检验。结果NTHi可迅速诱导p38、p44/42 MAPK通路的磷酸化,并至少持续到刺激后4h。与培养基组比较,NTHi刺激16h后单核细胞表面TLR4的表达明显增加(11.8±1.6,4.8±0.6),差异具有统计学意义(t=4.08,P〈0.05)。NTHi刺激4h和16h后上清液中的TNF-α(16.4±5.3,30.2±10.7)较培养基组(0.6±0.6,1.4±1.1)显著增加,差异具有统计学意义(4h时I-J值为15.78,16h时I-J值为28.82,P均〈0.01)。与细菌组比较,SB203580干预组单核细胞TNF-α水平显著降低(4h时I—J值为11.26,16h时I—J值为21.32,P均〈0.05),而U0126干预组TNF-α水平无明显变化(4h时I-J值为6.32,16h时I-J值为12.57,P均〉0.05)。结论 TLR4可能参与了NTHi诱导的单核细胞反应,p38 MAPK是该反应的关键信号分子。
徐志豪徐峰沈华浩李兰娟
关键词:嗜血菌流感P38丝裂原活化蛋白激酶类TOLL样受体单核细胞
Efficacy and significance of various scores for pneumonia severity in the management of patients with community-acquired pneumonia in China被引量:12
2012年
Background Community-acquired pneumonia (CAP) remains one of the leading causes ot death from infectious diseases around the world.Most severe CAP patients are admitted to the intensive care unit (ICU),and receive intense treatment.The present study aimed to evaluate the role of the pneumonia severity index (PSI),CURB-65,and sepsis score in the management of hospitalized CAP patients and explore the effect of ICU treatment on prognosis of severe cases.Methods A total of 675 CAP patients hospitalized in the Second Affiliated Hospital of Zhejiang University School of Medicine were retrospectively investigated.The ability of different pneumonia severity scores to predict mortality was compared for effectiveness,while the risk factors associated with 30-day mortality rates and hospital length of stay (LOS) were evaluated.The effect of ICU treatment on the outcomes of severe CAP patients was also investigated.Results All three scoring systems revealed that the mortality associated with the low-risk or intermediate-risk group was significantly lower than with the high-risk group.As the risk level increased,the frequency of ICU admission rose in tandem and LOS in the hospital was prolonged.The areas under the receiver operating characteristic curve in the prediction of mortality were 0.94,0.91 and 0.89 for the PSI,CURB-65 and sepsis score,respectively.Compared with the corresponding control groups,the mortality was markedly increased in patients with a history of smoking,prior admission to ICU,respiratory failure,or co-morbidity of heart disease.The differences were also identified in LOS between control groups and patients with ICU treatment,heart,or cerebrovascular disease.Logistic regression analysis showed that age over 65 years,a history of smoking,and respiratory failure were closely related to mortality in the overall CAP cohort,whereas age,ICU admission,respiratory failure,and LOS at home between disease attack and hospital admission were identified as independent risk factors for mortality in th
Yang YanXu FengShi Li-yunDiao RanCheng Yu-shengChen Xi-yuanJing Ji-yongWang Xuan-dingShen Hua-hao
不可分型流感嗜血杆菌在慢性阻塞性肺疾病发病中的作用
2008年
慢性阻塞性肺疾病(COPD)是一种以气流受限为特征的疾病,患者气流受限不完全可逆,并进行性发展。COPD居我国农村患者死因第l位和城市患者死因第4位。在世界范围,COPD发病率和病死率还在不断上升,据世界卫生组织公布,至2020年COPD将居全球疾病经济负担的第5位。在我国COPD同样是严重危害人民身体健康的慢性呼吸系统疾病,国内7个地区最新的流行病学调查结果显示,40岁以上人群COPD的患病率为8.2%。
沈华浩徐峰Jian-dongLi
关键词:慢性阻塞性肺疾病流感嗜血杆菌慢性呼吸系统疾病COPD疾病经济负担
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