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郑毅 《铜陵职业技术学院学报》2011,10(4):37+71-37,71
目的：为研究葡萄球菌的耐药性。方法：对近年来抗生素滥用现状,而导致的葡萄球菌进行耐药监测、对其耐药特征、机制以及各种耐药金葡菌感染后的处理进行相关探讨和研究。结果：多重耐药葡萄球菌包括甲氧西林耐药金黄色葡萄球菌（MRSA）、甲氧西林耐药表皮葡萄球菌（MRsE）和甲氧西林耐药溶血葡萄球菌（MRsH）的出现,对院内感染构成了重大威胁。结论：控制和合理正确使用抗生素是当今我们临床医师和药师所要迫切面对的重要环节。 相似文献
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随着抗生素的广泛应用,越来越多的细菌出现耐药,其耐药水平也越来越高。近年来具有多重耐药性的常见革兰阳性菌已在世界各地区流行,其中最重要的病原菌之一为耐甲氧西林金黄色葡萄球菌(MRSA)。MRSA自60年代出现后,在30多年的时间里已逐步成为全球性引起医院内感染的重要致病菌之一。MRSA非但对甲氧西林耐药,而且对绝大多数β-内酰胺类抗生素呈交叉耐药,并可对氨基糖甙类、大环内酯类等常用抗生素产生多重耐药,因此MRSA 相似文献
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《教育教学论坛》2020,(1)
目的:了解社区和医院两种不同环境对鼻腔耐甲氧西林金黄色葡萄球菌(MRSA)定植的影响。方法:用鼻拭子法采集108例未进入临床实习医学生和99例正进行临床实习医学生鼻腔样本,用金黄色葡萄球菌显色培养基培养筛查金黄色葡萄球菌,并通过PCR方法检测SCCmecA基因,进行MRSA的鉴定。比较两个群体中MRSA携带率的差异,分析社区和医院环境对MRSA在人鼻腔定植的影响。结果:108例未进入临床实习医学生共检出金黄色葡萄球菌(SAU)菌株44例,MRSA菌株8例,MRSA检出率7%,99例进入临床实习医学生共检出SAU菌株59例,MRSA菌株21例,MRSA检出率21%。实习组MRSA携带率是未实习组的2.86倍,两种不同环境下造成的MRSA阳性率不同具有统计学意义(χ~2=8.171,P<0.05)。结论:社区和医院两种不同环境对鼻腔耐甲氧西林金黄色葡萄球菌定植有显著影响,长期处于医院环境可使鼻腔MRSA定值率显著提高。 相似文献
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随着抗生素的广泛应用 ,越来越多的细菌出现耐药 ,其耐药水平也越来越高。近年来具有多重耐药性的常见革兰阳性菌已在世界各地区流行 ,其中最重要的病原菌之一为耐甲氧西林金黄色葡萄球菌 (MR SA)。MRSA自 6 0年代出现后 ,在 30多年的时间里已逐步成为全球性引起医院内感染的重要致病菌之一。MRSA非但对甲氧西林耐药 ,而且对绝大多数 β-内酰胺类抗生素呈交叉耐药 ,并可对氨基糖甙类、大环内酯类等常用抗生素产生多重耐药 ,因此MRSA的感染成为当前临床治疗的棘手难题[1] ,严重感染死亡率可高达 5 0 % ,已引起国内外学者的高度重视。… 相似文献
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目的:观察中药黄芩、黄柏提取液及其不同配伍液和抗-MRSA IgY对耐甲氧西林金黄色葡萄球菌体外抑菌活性.方法:采用二次煮沸法提取中药黄芩、黄柏;改良水稀释法提取卵黄中的IgY;采用美国国家临床实验室标准委员会(NCCLS)推荐的琼脂稀释法测定中药黄芩、黄柏提取液及其不同配伍液和抗-MRSA IgY 对耐甲氧西林金黄色葡萄球菌体的最小抑菌浓度(MIC).结果:中药黄芩提取液的MIC50为0.75mg/ml,MIC90为6.2mg/ml;黄柏MIC50 1.35mg/ml,MIC90为10.6mg/ml;黄芩:黄柏(1∶1)MIC50为0.174mg/ml,MIC90为1.4mg/ml;黄芩:黄柏(1∶2)MIC50为0.34mg/ml,MIC90为2.74mg/ml;黄芩:黄柏(2∶1)MIC50为0.093mg/ml,MIC90为0.74mg/ml;抗-MRSA IgY的MIC50分别为1∶8192,MIC90为1∶2048.结论:黄芩、黄柏提取液对耐甲氧西林金黄色葡萄球菌均有较好的抑菌作用,其中黄芩比黄柏为好,两者有显著性差异;黄芩、黄柏配伍液中,以2∶1的配伍抑菌效果最好;抗-MRSA IgY对耐甲氧西林金黄色葡萄球菌有较好的抑菌效果. 相似文献
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医院感染多重耐药菌的回顾性分析 总被引：4，自引：0，他引：4
目的 为了解细菌耐药性变化趋势,对某医院近5年住院病人多重耐药茵感染率及耐药茵的变迁进行回顾性调查分析.方法 进行细茵培养,共分离3 564株多重耐药茵,药敏结果判断依据NCCLS2002年标准.并排除同一患者的重复菌株.结果 住院病人多重耐药茵感染率为1.87%,耐甲氧西啉金黄色葡萄球茵平均感染率为0.38%,耐甲氧西啉凝固酶阴性葡萄球菌平均感染率为1.17%,产超广谱β-内酰胺酶的肺炎克雷伯氏茵平均感染率为02.09%.肺炎克雷伯氏茵之外的产超广谱β-内酰胺酶的肠杆茵平均感染率为0.23%,未发现耐万古霉素的肠球茵.2003-2007年的MRSA、MRCNS的构成比有显著的变化,ESBLKp和ESBLE构成比变化不明显.结论 结果显示五年内MRSA、MRCNS的感染率逐年升高;ESBLKp、ESBLE感染率变化小,但均无明显差异. 相似文献
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目的：观察中药黄芩、黄柏提取液及其不同配伍液和抗-MRSA IgY对耐甲氧西林金黄色葡萄球菌体外押菌活性。方法：采用二次煮沸法提取中药黄芩、黄柏;改良水稀释法提取卵黄中的IgY;采用美国国家临床实验室标准委员会（NCCLS）推荐的琼脂稀释法测定中药黄芩、黄柏提取液及其不同配伍液和抗-MRSA IgY对耐甲氧西林金黄色葡萄球菌体的最小抑菌浓度（MIC）。结果：中药黄芩提取液的MIC50为0．75mg／ml,MIC90为6．2mg／ml;黄柏MIC501．35mg／ml,MIC90为10．6mg／ml;黄芩：黄柏（1：1）MIC50为0．174ms／ha,MIC90为1．4mg／ml;黄芩：黄柏（1：2）MIC50为0．34mg／ml,MIC90为2．74mg／ml;黄芩：黄柏（2：1）MIC50为0．093mg／ml,MIC90为0．74mg／ml;抗-MRSA IgY的MIC50分别为1：8192,MIC90为1：2048。结论：黄芩、黄柏提取液对耐甲氧西林金黄色葡萄球菌均有较好的抑菌作用,其中黄芩比黄柏为好,两者有显著性差异;黄芩、黄柏配伍液中,以2：1的配伍抑茵效果最好;抗-MRSA IgY对耐甲氧西林金黄色葡萄球菌有较好的押菌效果。 相似文献
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A great amount of foodborne pathogens were Gram-positive(G+) bacteria, a threat to public health. In this study, considering the binding ability of nisin towards G+ bacteria and the stable fluorescent ability of EGFP protein, a fluorescent nisin–EGFP protein probe was constructed by a gene engineering method. Nisin and EGFP were used as the receptor and fluorophore, respectively, to detect G+ bacteria. The nisin and egfp gene were amplified separately according to the sequence published in Gen Bank using unique primers. The two genes were cloned into a pET-28b(+) vector resulting in apET-28b(+)–nisin–egfp vector. The vector was transferred into Escherichia coli(E. coli) BL21(DE3) for expression. The expressed protein was extracted, purified by a Ni–NTA column, and then tested by the SDS-PAGE method to confirm its molecular weight. Listeria monocytogenes(L.monocytogenes), Staphylococcus aureus(S. aureus), and Micrococcus luteus(M. luteus) were used as the representations of G+ bacteria. E. coli O157, representing the gram-negative(G-) bacteria, was used as a negative control. The binding specificity of the recombinant protein was performed on two types of bacteria and then detected through fluorescent microscopy. The results indicated that the nisin–EGFP probe could detect G+ bacteria at 10~8CFU/mL. 相似文献
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6种常用抗菌中药对3株常见病原性细菌的抑菌作用检测 总被引：2，自引：0，他引：2
目的:建立抗菌中药对临床常见病原性细菌抑菌作用的检测方法。方法:选择6种常用抗菌中药(黄连、苦参、连翘、大黄、生地、知母),分别采用水提法制备至质量浓度1mg/L。应用液体稀释法测定上述中药对金黄色葡萄球菌、大肠埃希菌和铜绿假单胞菌的最低抑菌浓度(MIC)。结果:建立了中药抑菌作用的检测方法。黄连、大黄与连翘抑制细菌的作用较强,MIC值均≤0.05mg/L,其中黄连对金黄色葡萄球菌的抑菌作用最强(MIC值为0.00625mg/L)。结论:应用本方法可以进行中药抑菌作用的检测。抗菌中药对所试验菌种表现不同的抑菌作用。 相似文献
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Objective:To purify Mannan-binding lectin(MBL)from human serum and detect its binding ability to several kindsof bacteria common in infections diseases of children.Methods:MBL was purifide from human serum by affinity chromatographyon mannan-Sepharose 4B column.Its binding ability to eight species,97 stratus of bacteria was detected by enzyme-linked lectinassay(ELLA).Results:MBL has different binding ability to bacteria and shows strong binding ability to Klebsiella ornithinolvticaand Escherichia coli,but shows relatively lower binding ability to Staphylococcus haemolyticus,Enterobacter cloacae andStaphylococcus epidermidis.To different isolates of Klebsiella pneumoniae,Haemophilus influenzae and Staphylococcus aureus,MBL shows quite different binding ability.Conclusions:MBL has different binding ability to different bacteria,and has relativelystronger binding ability to Gram-negative bacteria.Its binding ability to different isolates of certain kinds of bacteria is quitedifferent. 相似文献
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彭友明 《孝感职业技术学院学报》2011,(3):102-103,58
目的：了解高职学生患者常见致病菌的种类及耐药情况,为临床抗感染治疗提供参考依据。方法：对来自高职学生患者的68株致病菌进行菌种鉴定和药敏试验,并对结果进行统计分析。结果：高职学生患者致病菌种的前三位分别是金黄色葡萄球菌（36．76％）、铜缘假单胞菌（17．65％）、大肠埃希氏菌（16．18％）;药敏试验结果显示,金黄色葡萄球菌对万古霉素、利奈唑胺和达福普汀的敏感率较高保持为100％,但对青霉素G的耐药率很高,达到97．5％,铜绿假单胞菌对各类抗生素的耐药性均较强。结论：金黄色葡萄球菌对多种抗生素耐药率提高,临床上应重视药敏试验,根据药敏试验结果合理选用抗菌药。 相似文献
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Objective: To determine the existence of genus-specific antigens in outer membrane proteins (OMPs) of leptospira with different virulence. Methods: Microscope agglutination test (MAT) was applied to detect the agglutination between commercial rabbit antiserum against leptospiral genus-specific TR/Patoc I antigen and 17 strains of Leptospira interrongans belonging to 15 serogroups and 2 strains of Leptospira biflexa belonging to 2 serogroups. The outer envelopes (OEs) of L.interrogans serogroup Icterohaemorrhagiae serovar lai strain lai (56601) with strong virulence and serogroup Pomona serovar pomona strain Luo (56608) with low virulence, and L.biflexa serogroup Semaranga serovar patoc strain Patoc I without virulence were prepared by using the method reported in Auran et al.(1972). OMPs in the OEs were obtained by treatment with sodium deoxycholate. SDS-PAGE and western blot were used for analyzing the features of the OMPs on electrophoretic pattern and the immunoreactivity to the antiserum against TR/Patoc I antigen, respectively. Results: All the tested strains belonging to different leptospiral serogroups agglutinated to the antiserum against leptospiral genus-specific TR/Patoc I antigen with agglutination titers ranging from 1:256-1:512. A similar SDS-PAGE pattern of the OMPs from the three strains of leptospira with different virulence was shown and the molecular weight of a major protein fragment in the OMPs was found to be approximately 60 KDa. A positive protein fragment with approximately 32 KDa confirmed by Western blot, was able to react with the antiserum against leptospiral genus-specific TR/Patoc I antigen, and was found in each the OMPs of the three stains of leptospira. Conclusion: There are genus-specific antigens on the surface of L.interrogans and L.biflexa. The OMP with molecular weight of 32 KDa may be one of the genus-specific protein antigens of leptospira. 相似文献
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INTRODUCTIONInfectionbyL.interrogansischaracterizedbyhemorrhage,diarrhea,jaundice,severerenalim-pairment,andasepticmeningitis.Leptospirosisisspreadfromanimalurinetohumansandiscon-sideredtobethemostwidespreadanthropozoono-sisintheworld.Thisdiseaseiscommoninfarmersandveterinarians,butcanalsobetransmittedthroughcontaminatedwaterinfloodedareas.Inparticular,leptospirosisisoneofthemostimportant2001;Kupeketal.,2000).LeptospiraisdividedintoLeptospirainterrogansandLeptospirabiflexa.Theformerispa… 相似文献
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目的 :了解慢性前列腺炎患者的主要病原体感染情况 ,探讨其病因学特点。方法 :对10 5例尿道炎后慢性前列腺炎患者行中段尿 (VB2 )及前列腺按摩液 (EPS)的病原体检测并进行结果分析。结果 :VB2 细菌培养阳性 6 8例 (6 4.8% ) ,其中以表皮葡萄球菌为主要致病菌 30例 ,淋球菌 12例 ,埃希菌 9例 ,解脲脲原体 (UU )培养阳性 18例 (17.1% ) ;EPS细菌培养阳性 79例 (75 .5 % ) ,其中表皮葡萄球菌 2 7例 ,淋球菌 13例 ,埃希菌 7例 ,UU培养阳性 2 1例 (2 0 .0 % ) ;EPS经PCR检测UU阳性 2 3例 (2 1.9% ) ,沙眼衣原体 (CT)阳性 2 9例 (2 7.6 % )。同时经PCR检测出复合感染者 19例 (18.1% )。结论 :慢性前列腺炎患者感染主要以表皮葡萄球菌、淋球菌、埃希菌、UU及CT为主。 相似文献
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Objective: To determine the existence of genus-specific antigens in outer membrane proteins (OMPs) ofleptospira with different virulence. Methods: Microscope agglutination test (MAT) was applied to detect the agglutination between commercial
rabbit antiserum against leptospiral genus-specific TR/Patoc I antigen and 17 strains ofLeptospira interrongans belonging to 15 serogroups and 2 strains ofLeptospira biflexa belonging to 2 serogroups. The outer envelopes (OEs) ofLinterrogans serogroupIcterohaemorrhagiae serovarlai strainlai (56601) with strong virulence and serogroupPomona serovarpomona strainLuo (56608) with low virulence, andL. biflexa serogroupSemaranga serovarpatoc strainPatoc I without virulence were prepared by using the method reported in Auranet al. (1972). OMPs in the OEs were obtained by treatment with sodium deoxycholate. SDS-PAGE and western blot were used for analyzing
the features of the OMPs on electrophoretic pattern and the immunoreactivity to the antiserum against TR/Patoc I antigen,
respectively. Results: All the tested strains belonging to different leptospiral serogroups agglutinated to the antiserum
against leptospiral genus-specific TR/Patoc I antigen with agglutination titers ranging from 1:256–1:512. A similar SDS-PAGE
pattern of the OMPs from the three strains ofleptospira with different virulence was shown and the molecular weight of a major protein fragment in the OMPs was found to be approximately
60 Kda. A positive protein fragment with approximately 32 KDa confirmed by Western blot, was able to react with the antiserum
against leptospiral genus-specific TR/Patoc I antigen, and was found in each the OMPs of the three stains ofleptospira. Conclusion: There are genus-specific antigens on the surface ofL.interrogans andL.biflexa. The OMP with molecular weight of 32 KDa may be one of the genus-specific protein antigens ofleptospira.
Project (No. 39970678) supported by the National Natural Science Foundation of China 相似文献
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AZAM Faizul SINGH Satendra KHOKHRA Sukhbir Lal PRAKASH Om 《Journal of Zhejiang University. Science. B》2007,8(6)
Objective: A series of 2-benzylideneaminonaphthothiazoles were designed and synthesized incorporating the lipo- philic naphthalene ring to render them more capable of penetrating various biomembranes. Methods: Schiff bases were synthe- sized by the reaction of naphtha[1,2-d]thiazol-2-amine with various substituted aromatic aldehydes. 2-(2'-Hydroxy)ben- zylideneaminonaphthothiazole was converted to its Co(II), Ni(II) and Cu(II) metal complexes upon treatment with metal salts in ethanol. All the compounds were evaluated for their antibacterial activities by paper disc diffusion method with Gram positive Staphylococcus aureus and Staphylococcus epidermidis and Gram negative Escherichia coli and Pseudomonas aeruginosa bac- teria. The minimum inhibitory concentrations of all the Schiff bases and metal complexes were determined by agar streak dilution method. Results: All the compounds moderately inhibited the growth of Gram positive and Gram negative bacteria. In the present study among all Schiff bases 2-(2'-hydroxy)benzylideneaminonaphthothiazole showed maximum inhibitory activity and among metal complexes Cu(II) metal complex was found to be most potent. Conclusion: The results obtained validate the hypothesis that Schiff bases having substitution with halogens, hydroxyl group and nitro group at phenyl ring are required for the antibacterial activity while methoxy group at different positions in the aromatic ring has minimal role in the inhibitory activity. The results also indicated that the metal complexes are better antibacterial agents as compared to the Schiff bases. 相似文献
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INTRODUCTION Colorectal cancer is the most common cancer ofthe Western world and accounts for approx.Elevenpercent of all cancer deaths in the United States.Aswith other malignancies,colorectal adenocarcinomais thought to develop through the accumulation ofgenetic alterations that inhibit cell growth.Two of theoncogenes that have been implicated in this processare bcl-2and p53,the products of which are involvedin apoptosis,cell proliferation and tumor develop-ment(Garewal et al.,1996).S… 相似文献