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具有Sylow塔的有限群的性质 被引量:1
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作者 唐瑶 白述伟 《哈尔滨师范大学自然科学学报》 CAS 1999年第4期1-4,共4页
利用 Richard Brauer在 [2 ]中给出的 G的子群 H及 H的正规子群 H0 在 G中有 H0 上的正规补的判定条件得到有限群是 Sylow塔群的充要条件 .利用群列刻划 Sylow塔群 .得到
关键词 st群 π-Hall π-正则因子 SYLOW塔 有限
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1例Y群ST167型脑膜炎奈瑟菌输入病例的流行病学和病原学分析
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作者 李振翠 李镕 +4 位作者 方艳梅 张昌 邵晓萍 刘英良 刘美真 《中华微生物学和免疫学杂志》 CAS CSCD 北大核心 2024年第6期480-484,共5页
目的对1例疑似脑膜炎奈瑟菌阳性病例进行病原学鉴定诊断,评估疫情传播风险。方法采集患者血液进行脑膜炎奈瑟菌分离培养,通过菌落形态学和菌体革兰染色观察、生化鉴定、乳胶凝集试验、血清玻片凝集试验、核酸检测进行病原鉴定和血清群分... 目的对1例疑似脑膜炎奈瑟菌阳性病例进行病原学鉴定诊断,评估疫情传播风险。方法采集患者血液进行脑膜炎奈瑟菌分离培养,通过菌落形态学和菌体革兰染色观察、生化鉴定、乳胶凝集试验、血清玻片凝集试验、核酸检测进行病原鉴定和血清群分群,检测菌株对12种抗生素的敏感性;对病例开展现场流行病学调查并采取疫情防制措施。结果经多种实验室方法鉴定,该疑似病例确诊为脑膜炎奈瑟菌感染,菌株血清群为Y群,多位点序列分型(MLST)为767,属ST167克隆群,对青霉素、氨苄西林、美罗培南等9种抗生素敏感,对环丙沙星和左氧氟沙星中介,对甲氧苄啶/磺胺甲噁唑耐药。病例的密切接触者和环境检测结果为阴性。结论本病例经检测明确病因为脑膜炎奈瑟菌侵袭性感染,菌株为Y群ST167型。流行病学调查显示该病例引发疫情传播流行的风险较低,后续需要持续关注和监测。 展开更多
关键词 脑膜炎奈瑟菌 st167克隆 多位点序列分型 耐药性
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1例流行性脑脊髓膜炎病例的菌群鉴定及分析
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作者 杨建辉 张璐 +2 位作者 吕宛玉 刘倩 徐瑾 《微生物学免疫学进展》 2017年第4期57-60,共4页
目的对2015年河南省1例流行性脑脊髓膜炎(流脑)病例的菌群进行分子分型鉴定及分析,为河南省流脑预防和控制工作提供科学依据。方法对患者脑脊液和血液标本以及37例密切接触者咽拭子标本进行细菌培养,提取DNA进行PCR及多位点序列分型(mul... 目的对2015年河南省1例流行性脑脊髓膜炎(流脑)病例的菌群进行分子分型鉴定及分析,为河南省流脑预防和控制工作提供科学依据。方法对患者脑脊液和血液标本以及37例密切接触者咽拭子标本进行细菌培养,提取DNA进行PCR及多位点序列分型(multilocus sequence typing,MLST)分析。用ELISA检测密切接触者血清标本的脑膜炎奈瑟菌A群和C群抗体水平。结果患者和1例密切接触者分离的菌株经细菌培养及PCR鉴定,分别为C群和B群脑膜炎奈瑟菌。MLST分型显示,患者和密切接触者标本分别为ST4821型和ST5664型,两者均为ST4821克隆群。37例密切接触者脑膜炎奈瑟菌A群和C群抗体阳性率分别为91.89%和21.62%,平均抗体质量浓度分别为6.50μg/m L和1.73μg/m L。结论引起流脑疫情的致病菌为C群ST4821型脑膜炎奈瑟菌,当地C群平均抗体含量偏低,需加强流脑A+C疫苗的接种,有效预防流脑的暴发。 展开更多
关键词 C脑膜炎奈瑟菌 多位点序列分型 st4821克隆
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Staged versus "one-time" multivessel intervention in elderly patients with non-ST-elevation acute coronary syndrome 被引量:4
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作者 Xiao-Fan YU Yi LI +5 位作者 Qian-Cheng WANG Xiao-Zeng WANG Ming LIANG Xin ZHAO Kai XU Ya-Ling HAN 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2016年第9期760-767,共8页
Objective To evaluate the clinical outcomes of "one-time" versus staged multivessel stenting in elderly (〉 60 years)patients with non-ST-elevation acute coronary syndrome (NSTE-ACS) and multivessel disease (MV... Objective To evaluate the clinical outcomes of "one-time" versus staged multivessel stenting in elderly (〉 60 years)patients with non-ST-elevation acute coronary syndrome (NSTE-ACS) and multivessel disease (MVD). Methods We analyzed data of consecutive NSTE-ACS patients with multivessel percutaneous coronary intervention (PCI) who were enrolled in General Hospital of Shenyang Military Region between 2008 and 2012. A total of 1090 eligible patients aged 〉 60 were further categorized into "one-time" group (n = 623) and staged PCI group (n = 467) according to intervention strategy. The primary endpoint was composite outcome of myocardial infarction (MI) or cardiac death during 3-year follow-up. Results The estimated 3-year composite rate of cardiac death or MI was 7.0% in the staged PCI group and 9.5% in the "one-time" group (P = 0.110). Multivariate analysis confmned the benefit of staged PCI on the primary events in the elderly (HR: 0.638, 95% CI: 0.408-3.998, P = 0.049). In a propensity score matched cohort, staged PCI was associated with lower rates of primary events (6.1% vs. 10.4%, P = 0.046) and MI (3.4% vs. 7.4%, P = 0.037) at three years. In addition, there were reduced trends in the stent thrombosis at 30 days (0.3% vs. 1.4%, P = 0.177) and at three years (1.1% vs. 2.4%, P = 0.199) in the staged PCI group. There was no significant difference in the 3-year target vessel revascularization (15.5% vs. 14.4%, P = 0.746). Conclusions In elderly NSTE-ACS patients with MVD, staged PCI might be an optimal strategy associated with reduced long-term cardiac death or MI compared with "one-time" PCI strategy, which needs further confirmation. 展开更多
关键词 Multivessel revascularization Non-st-elevation acute coronary syndrome Percutaneous coronary intervention
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北京发现ST4821克隆群B群脑膜炎奈瑟菌 被引量:11
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作者 董梅 赵剑虹 +3 位作者 王恒伟 曾阳 黄芳 吴疆 《疾病监测》 CAS 2014年第2期98-100,共3页
目的对2013年1月北京市1例流行性脑脊髓膜炎(流脑)死亡病例标本进行脑膜炎奈瑟菌检测,了解感染病原及分离菌株的分子流行病学特征。方法对患者脑脊液标本进行细菌分离培养,通过常规细菌学试验对分离菌株进行脑膜炎奈瑟菌鉴定、实时荧光... 目的对2013年1月北京市1例流行性脑脊髓膜炎(流脑)死亡病例标本进行脑膜炎奈瑟菌检测,了解感染病原及分离菌株的分子流行病学特征。方法对患者脑脊液标本进行细菌分离培养,通过常规细菌学试验对分离菌株进行脑膜炎奈瑟菌鉴定、实时荧光定量-聚合酶链反应(real-time fluorescence quantitative PCR)方法检测患者脑脊液和抗凝血中脑膜炎奈瑟菌核酸,同时对鉴定的菌株进行多位点序列分型(MLST)分析、外膜蛋白PorA分型和FetA分型,以及体外药物敏感试验。结果从患者脑脊液和抗凝血标本中均检测到脑膜炎奈瑟菌种特异基因ctrA和血清群B特异基因siaD。从患者脑脊液中分离到1株可疑阳性菌,经实验确诊为B群脑膜炎奈瑟菌。PorA为P1.20,23-9,FetA为F1-91;多位点序列分型分析显示基因型为ST10051,属于ST4821序列群。该菌株对复方新诺明为中等耐药,对环丙沙星和四环素耐药,对青霉素、头孢噻肟、头孢曲松、左氧氟沙星、美罗培南、氯霉素、利福平等药物均敏感。从密切接触者咽拭子中未分离到脑膜炎奈瑟菌。结论该菌株经鉴定为B:P1.20,23-9:F1-91:ST10051(ST4821序列群)。北京地区人群中已经存在高致病性ST4821克隆群B群脑膜炎奈瑟菌,并引发死亡病例,提示应全面掌握本地区脑膜炎奈瑟菌健康人群携带情况及病例菌株分子流行病学资料,为流脑的预防控制提供实验室数据支撑。 展开更多
关键词 流行性脑脊髓膜炎 B脑膜炎奈瑟菌 st4821序列 死亡病例
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EFFECT OF ELECTROACUPUNCTURE ON RED BLOOD CELL IMMUNE AND T-CELL SUBGROUP IN THE RAT
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作者 高巍 黄裕新 +2 位作者 陈洪 孙大勇 张洪新 《World Journal of Acupuncture-Moxibustion》 2000年第3期29-32,共4页
In the present study, the effect of electroacupuncture (EA) on immune system was observed in the rat by using micro- whole blood direct immunofluorescence staining assay to detect changes of the peripheral blood T lym... In the present study, the effect of electroacupuncture (EA) on immune system was observed in the rat by using micro- whole blood direct immunofluorescence staining assay to detect changes of the peripheral blood T lymphocyte subgroup and employing red blood cell (RBC) C 3b receptor- yeast rosette test and red blood cell-IC rosette test to analyze erythrocytic immune function. Results showed that after EA of “Zusanli" (ST 36), CD+ 4, RBC-C 3bRR and RBC-ICR in the peripheral blood of the normal rats increased significantly while CD+ 8 had no any considerable changes and a positive correlation between CD+ 4 and RBC-C 3bRR was found. In immunosuppression model rats, the values of CD+ 4 and RBC-C 3bRR were obviously lower than those of the normal control group while CD+ 8 had no any striking changes; but after EA treatment, there were no evident differences between EA group and normal control group in the above-mentioned indexes. There were also no any significant differences between non-acupoint group and normal control group in those indexes. Results suggest that EA of “Zusanli" (ST 36) can raise T cell immune function and RBC adhesion function in both normal rats and immunosuppression model rats, both of which present a positive correlation. 展开更多
关键词 EA “Zusanli' (st 36) Red blood cell immune T lymphocyte subgroup Flowing cytometer
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