ampicillin resistance

Summary

Summary: Nonsusceptibility of a microbe to the action of ampicillin, a penicillin derivative that interferes with cell wall synthesis.

Top Publications

  1. ncbi Two different mechanisms of ampicillin resistance operating in strains of Vibrio cholerae O1 independent of resistance genes
    Dong Tu Nguyen
    Department of Bacteriology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
    FEMS Microbiol Lett 298:37-43. 2009
  2. pmc Genome-wide identification of ampicillin resistance determinants in Enterococcus faecium
    Xinglin Zhang
    Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
    PLoS Genet 8:e1002804. 2012
  3. pmc Multidrug resistance is mediated by large plasmids carrying a class 1 integron in the emergent Salmonella enterica serotype [4,5,12:i:-]
    B Guerra
    , , Universidad de Oviedo, 33006 Oviedo, Principado de Asturias, Spain
    Antimicrob Agents Chemother 45:1305-8. 2001
  4. ncbi Spread of ampicillin/vancomycin-resistant Enterococcus faecium of the epidemic-virulent clonal complex-17 carrying the genes esp and hyl in German hospitals
    I Klare
    Robert Koch Institute, Wernigerode Branch, Burgstr 37, 38855, Wernigerode, Germany
    Eur J Clin Microbiol Infect Dis 24:815-25. 2005
  5. pmc Diversity of ampicillin resistance genes and antimicrobial susceptibility patterns in Haemophilus influenzae strains isolated in Korea
    In Suk Kim
    Department of Laboratory Medicine, Gyeong Sang University College of Medicine, Jinju, Korea
    Antimicrob Agents Chemother 51:453-60. 2007
  6. ncbi Polymorphisms of the pbp5 gene and correlation with ampicillin resistance in Enterococcus faecium isolates of animal origin
    Patricia Poeta
    Departamento de Ciências Veterinárias, Universidade de Tras os Montes e Alto Douro, Vila Real, Portugal
    J Med Microbiol 56:236-40. 2007
  7. ncbi Risk factors associated with ampicillin resistance in patients with bacteraemia caused by Enterococcus faecium
    Jesus Fortun
    Department of Infectious Diseases, Ramon y Cajal Hospital, University of Alcala, Crtra Colmenar Km 9 1, Madrid 28034, Spain
    J Antimicrob Chemother 50:1003-9. 2002
  8. pmc vanA and vanB incorporate into an endemic ampicillin-resistant vancomycin-sensitive Enterococcus faecium strain: effect on interpretation of clonality
    J P Suppola
    Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, 00014 Helsinki, Finland
    J Clin Microbiol 37:3934-9. 1999
  9. ncbi Trends in antimicrobial resistance in 3469 enterococci isolated from blood (EARSS experience 2001-06, Spain): increasing ampicillin resistance in Enterococcus faecium
    Jesús Oteo
    J Antimicrob Chemother 59:1044-5. 2007
  10. ncbi Biomonitoring marine habitats in reference to antibiotic resistant bacteria and ampicillin resistance determinants from oviductal fluid of the nesting green sea turtle, Chelonia mydas
    S N al-Bahry
    Department of Biology, College of Science, Sultan Qaboos University, PC 123, Al Khodh, Muscat, Oman
    Chemosphere 87:1308-15. 2012

Detail Information

Publications219 found, 100 shown here

  1. ncbi Two different mechanisms of ampicillin resistance operating in strains of Vibrio cholerae O1 independent of resistance genes
    Dong Tu Nguyen
    Department of Bacteriology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
    FEMS Microbiol Lett 298:37-43. 2009
    ..The twitching motility in the fimbriate Bgd17 strain disappeared depending on the production of cpxP protein, suggesting that fimbriation of V. cholerae O1 is controlled by a two-component signal transduction system...
  2. pmc Genome-wide identification of ampicillin resistance determinants in Enterococcus faecium
    Xinglin Zhang
    Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
    PLoS Genet 8:e1002804. 2012
    ..in the low-affinity penicillin binding protein PBP5 have previously been shown to be important for ampicillin resistance in E. faecium, but the existence of additional resistance determinants has been suggested...
  3. pmc Multidrug resistance is mediated by large plasmids carrying a class 1 integron in the emergent Salmonella enterica serotype [4,5,12:i:-]
    B Guerra
    , , Universidad de Oviedo, 33006 Oviedo, Principado de Asturias, Spain
    Antimicrob Agents Chemother 45:1305-8. 2001
    ..The genes mediating resistance to ampicillin, chloramphenicol, and tetracycline in the [4,5,12:i:-] clone are different from those found in the pentadrug-resistant serotype Typhimurium DT104 clone...
  4. ncbi Spread of ampicillin/vancomycin-resistant Enterococcus faecium of the epidemic-virulent clonal complex-17 carrying the genes esp and hyl in German hospitals
    I Klare
    Robert Koch Institute, Wernigerode Branch, Burgstr 37, 38855, Wernigerode, Germany
    Eur J Clin Microbiol Infect Dis 24:815-25. 2005
    ..In conclusion, it is very important to monitor the occurrence of epidemic-virulent clonal complex-17 strains of E. faecium to prevent their spread in hospitals, especially if they are resistant to glycopeptides and linezolid...
  5. pmc Diversity of ampicillin resistance genes and antimicrobial susceptibility patterns in Haemophilus influenzae strains isolated in Korea
    In Suk Kim
    Department of Laboratory Medicine, Gyeong Sang University College of Medicine, Jinju, Korea
    Antimicrob Agents Chemother 51:453-60. 2007
    ..influenzae strains in Korea...
  6. ncbi Polymorphisms of the pbp5 gene and correlation with ampicillin resistance in Enterococcus faecium isolates of animal origin
    Patricia Poeta
    Departamento de Ciências Veterinárias, Universidade de Tras os Montes e Alto Douro, Vila Real, Portugal
    J Med Microbiol 56:236-40. 2007
    ..The other two alleles presented the amino acid changes 496N-->K and 629E-->V (allele D), and 470H-->Q (allele F). A correlation between deduced amino acid changes in PBP5 and ampicillin MICs was detected in animal E. faecium isolates...
  7. ncbi Risk factors associated with ampicillin resistance in patients with bacteraemia caused by Enterococcus faecium
    Jesus Fortun
    Department of Infectious Diseases, Ramon y Cajal Hospital, University of Alcala, Crtra Colmenar Km 9 1, Madrid 28034, Spain
    J Antimicrob Chemother 50:1003-9. 2002
    ..12-20.0) and urinary catheterization (OR:4.2; 95% CI: 1.3-30.0) were identified as predictors of ampicillin resistance in enterococcal bacteraemic patients...
  8. pmc vanA and vanB incorporate into an endemic ampicillin-resistant vancomycin-sensitive Enterococcus faecium strain: effect on interpretation of clonality
    J P Suppola
    Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, 00014 Helsinki, Finland
    J Clin Microbiol 37:3934-9. 1999
    ..None of the differences was specific to or determinative for any of the groups. Our material suggests that vanA and vanB incorporate into an endemic ampicillin-resistant VSE strain...
  9. ncbi Trends in antimicrobial resistance in 3469 enterococci isolated from blood (EARSS experience 2001-06, Spain): increasing ampicillin resistance in Enterococcus faecium
    Jesús Oteo
    J Antimicrob Chemother 59:1044-5. 2007
  10. ncbi Biomonitoring marine habitats in reference to antibiotic resistant bacteria and ampicillin resistance determinants from oviductal fluid of the nesting green sea turtle, Chelonia mydas
    S N al-Bahry
    Department of Biology, College of Science, Sultan Qaboos University, PC 123, Al Khodh, Muscat, Oman
    Chemosphere 87:1308-15. 2012
    ..This data can be of value in understanding the decline of this endangered species as a result of exposure to marine pollution which is threatening their survival...
  11. ncbi Importance of amino acid alterations and expression of penicillin-binding protein 5 to ampicillin resistance of Enterococcus faecium in Taiwan
    Sue Er Hsieh
    Department of Medical Laboratory Science and Biotechnology, Central Taiwan University of Science and Technology, no 11, Buzih Lane, Beitun District, Taichung City 40601, Taiwan, Republic of China
    Int J Antimicrob Agents 28:514-9. 2006
    ..in the C-terminal domain of penicillin-binding protein 5 (PBP5) and the levels of PBP5 expression to ampicillin resistance of Taiwan clinical isolates of Enterococcus faecium were studied...
  12. pmc Role of penicillin-binding protein 5 in expression of ampicillin resistance and peptidoglycan structure in Enterococcus faecium
    F Sifaoui
    INSERM E0004, , 75270 Paris Cedex 06, France
    Antimicrob Agents Chemother 45:2594-7. 2001
    ..These results indicate that pbp5 is a nonessential gene responsible for intrinsic resistance to moderate levels of ampicillin and by itself cannot confer high-level resistance...
  13. ncbi Transfer of ampicillin resistance from Salmonella Typhimurium DT104 to Escherichia coli K12 in food
    C Walsh
    The Ashtown Food Research Centre, Teagasc, Ashtown, Dublin, Ireland
    Lett Appl Microbiol 46:210-5. 2008
    ..To investigate the transfer of antibiotic resistance from a donor Salmonella Typhimurium DT104 strain to a recipient Escherichia coli K12 strain...
  14. pmc Analysis of clonality and antibiotic resistance among early clinical isolates of Enterococcus faecium in the United States
    Jessica R Galloway-Peña
    Department of Internal Medicine, Division of Infectious Diseases, University of Texas Medical School at Houston, 6431 Fannin Street, Houston, TX 77030, USA
    J Infect Dis 200:1566-73. 2009
    ..The Enterococcus faecium genogroup, referred to as clonal complex 17 (CC17), seems to possess multiple determinants that increase its ability to survive and cause disease in nosocomial environments...
  15. ncbi Identification of high-risk enterococcal clonal complexes: global dispersion and antibiotic resistance
    Helen L Leavis
    Eijkman Winkler Institute for Microbiology, Infectious Diseases and Inflammation, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
    Curr Opin Microbiol 9:454-60. 2006
    ..This complex is correlated with ampicillin and quinolone resistance and with the presence of a putative pathogenicity island. Preliminary MLST data suggest that similar hospital-adapted complexes might also exist in E. faecalis...
  16. ncbi Molecular characterisation of bovine faecal Escherichia coli shows persistence of defined ampicillin resistant strains and the presence of class 1 integrons on an organic beef farm
    D V Hoyle
    Medical Microbiology, University of Edinburgh Medical School, Teviot Place, Edinburgh EH8 9AG, UK
    Vet Microbiol 115:250-7. 2006
    ..coli. The prevalence of ampicillin resistance ranged from 27.3 to 40...
  17. ncbi Ecological replacement of Enterococcus faecalis by multiresistant clonal complex 17 Enterococcus faecium
    J Top
    Eijkman Winkler Institute for Microbiology, Infectious Diseases and Inflammation, University Medical Centre Utrecht, Utrecht, The Netherlands
    Clin Microbiol Infect 13:316-9. 2007
    ..This ecological change mimics events preceding the emergence of vancomycin-resistant E. faecium (VREF) in the USA and may presage the emergence of CC17 VREF in European hospitals...
  18. pmc Analysis of PBP5 of early U.S. isolates of Enterococcus faecium: sequence variation alone does not explain increasing ampicillin resistance over time
    Jessica R Galloway-Peña
    Division of Infectious Disease, Department of Medicine, Center for the Study of Emerging and Re Emerging Pathogens, University of Texas Medical School, Houston, Texas 77030, USA
    Antimicrob Agents Chemother 55:3272-7. 2011
    Recent studies have shown that ampicillin resistance has increased steadily over the past 3 decades within U.S. Enterococcus faecium isolates...
  19. pmc Penicillin-binding protein 5 and expression of ampicillin resistance in Enterococcus faecium
    L B Rice
    Medical and Research Services, VA Medical Center, Cleveland, Ohio 44106, USA
    Antimicrob Agents Chemother 45:1480-6. 2001
    ..transcripts varied between strains and did not always correlate with quantities of PBP5 or levels of ampicillin resistance. Since the psr of C68 is presumably nonfunctional due to an insertion of an extra nucleotide in the codon ..
  20. ncbi Acquisition and epidemiology of antibiotic-resistant Escherichia coli in a cohort of newborn calves
    Deborah V Hoyle
    Centre for Tropical Veterinary Medicine, Royal Dick School of Veterinary Studies, University of Edinburgh, Easter Bush Veterinary Centre, Roslin, Midlothian EH25 9RG
    J Antimicrob Chemother 53:867-71. 2004
    ..The acquisition of antibiotic-resistant commensal Escherichia coli was examined in a cohort of newborn calves...
  21. pmc Induction of multidrug resistance mechanism in Escherichia coli biofilms by interplay between tetracycline and ampicillin resistance genes
    Thithiwat May
    Graduate School of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita ku, Sapporo 060 8628, Japan
    Antimicrob Agents Chemother 53:4628-39. 2009
    ..Here we showed the interplay between the tetracycline resistance efflux pump TetA(C) and the ampicillin resistance gene (bla(TEM-1)) in biofilms of Escherichia coli harboring pBR322 in the presence of the mixture of ..
  22. ncbi Natural transfer of sulphonamide and ampicillin resistance between Escherichia coli residing in the human intestine
    Margarita Trobos
    National Center for Antimicrobials and Infection Control, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen S, Denmark
    J Antimicrob Chemother 63:80-6. 2009
    ..The aim of this study was to investigate whether the sulphonamide resistance gene sul2 could be transferred between Escherichia coli in the human gut...
  23. ncbi [The trend and susceptibility to antibacterial agents of enterococcus species from urinary tract infections]
    Kiyohito Ishikawa
    Department of Urology, School of Medicine, Fujita Health University
    Nihon Hinyokika Gakkai Zasshi 95:25-34. 2004
    ..To determine the extent of drug-resistance among Enterococcus species we investigated in vitro experiments...
  24. ncbi High acquisition and environmental contamination rates of CC17 ampicillin-resistant Enterococcus faecium in a Dutch hospital
    Marieke J A de Regt
    Department of Medical Microbiology, University Medical Centre Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
    J Antimicrob Chemother 62:1401-6. 2008
    ..In Europe, CC17 isolates are usually ampicillin-resistant, but most are still vancomycin-sensitive. We aimed to study ampicillin-resistant E. faecium (ARE) epidemiology in our hospital...
  25. pmc Impact of three ampicillin dosage regimens on selection of ampicillin resistance in Enterobacteriaceae and excretion of blaTEM genes in swine feces
    D Bibbal
    UMR181 Physiopathologie et Toxicologie Expérimentales, INRA, ENVT, Ecole Nationale Veterinaire de Toulouse, 23 Chemin des Capelles, BP 87 614, Toulouse Cedex 3, France
    Appl Environ Microbiol 73:4785-90. 2007
    The aim of this study was to assess the impact of three ampicillin dosage regimens on ampicillin resistance among Enterobacteriaceae recovered from swine feces by use of phenotypic and genotypic approaches...
  26. pmc Targeting of the activation-induced cytosine deaminase is strongly influenced by the sequence and structure of the targeted DNA
    Hong Ming Shen
    Department of Molecular Genetics and Cell Biology, University of Chicago, IL 60637, USA
    Mol Cell Biol 25:10815-21. 2005
    ..On the other hand, the lack of mutations in the first approximately 100 nucleotides and beyond about 1 to 2 kb from the promoter of immunoglobulin genes during SHM must be due to special conditions of transcription and chromatin in vivo...
  27. ncbi Changing patterns in neonatal Escherichia coli sepsis and ampicillin resistance in the era of intrapartum antibiotic prophylaxis
    Matthew J Bizzarro
    Division of Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, 333 Cedar St, New Haven, CT 06520 8064, USA
    Pediatrics 121:689-96. 2008
    The goal was to determine current trends in Escherichia coli-related early- and late-onset sepsis and patterns of ampicillin resistance in relation to institutional changes in the use of intrapartum antibiotic prophylaxis.
  28. pmc Longer intestinal persistence of Enterococcus faecalis compared to Enterococcus faecium clones in intensive-care-unit patients
    Patricia Ruiz-Garbajosa
    Servicio de Microbiologia, Hospital Universitario Ramon y Cajal, Madrid, Spain
    J Clin Microbiol 47:345-51. 2009
    ..faecalis showed a cumulative increase in CDPD, whereas E. faecium did not. CDPD and CPR were useful for measuring the dynamics of intestinal colonization with enterococcal clones...
  29. ncbi Ampicillin-resistant Escherichia coli in gestational pyelonephritis: increased occurrence and association with the colonization factor Dr adhesin
    A Hart
    Departments of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, Texas, USA
    J Infect Dis 183:1526-9. 2001
    The pattern of ampicillin resistance and possible association with virulence factors of 78 Escherichia coli isolates taken from 78 pregnant women with pyelonephritis were evaluated...
  30. ncbi High occurrence of esp among ampicillin-resistant and vancomycin-susceptible Enterococcus faecium clones from hospitalized patients
    Teresa M Coque
    Servicio de Microbiologia, Hospital Ramon y Cajal, Carretera de Colmenar, Km 9 1, Madrid 28034, Spain
    J Antimicrob Chemother 50:1035-8. 2002
    ..faecium clones. This observation indicates that antibiotic-resistant variants may frequently arise under antibiotic selective pressure among esp-positive clones reaching ecological abundance in the nosocomial habitat...
  31. pmc Impact of specific pbp5 mutations on expression of beta-lactam resistance in Enterococcus faecium
    Louis B Rice
    Medical and Research Services, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio 44106, USA
    Antimicrob Agents Chemother 48:3028-32. 2004
    We tested the impact of individual PBP 5 mutations on expression of ampicillin resistance in Enterococcus faecium using a shuttle plasmid designed to facilitate expression of cloned pbp5 in ampicillin-susceptible E. faecium D344SRF...
  32. pmc Transformation of Coxiella burnetii to ampicillin resistance
    M L Suhan
    Department of Microbiology and Immunology, Health Sciences Center, West Virginia University, Morgantown, 26506 9177, USA
    J Bacteriol 178:2701-8. 1996
    ..176:5233-5243, 1994). In the present study, an ars replicon was used to transform C. burnetii to ampicillin resistance. Plasmid pSKO(+)1000 contained the C...
  33. ncbi Lack of detection of ampicillin resistance gene transfer from Bt176 transgenic corn to culturable bacteria under field conditions
    Esther Badosa
    Institute of Food and Agricultural Technology, CIDSAV CeRTA, University of Girona, , Girona Spain
    FEMS Microbiol Ecol 48:169-78. 2004
    ..9%. Specific detection of putative bacteria harbouring bla TEM-1 ampicillin resistance genes acquired from Bt176 corn was performed with a method based on the extraction of DNA from the ..
  34. ncbi Photoactivatable antisense DNA: suppression of ampicillin resistance in normally resistant Escherichia coli
    F P Gasparro
    Department of Dermatology, Yale University, New Haven, CT 06510
    Antisense Res Dev 1:117-40. 1991
    ..Bacteria treated in a similar manner but in the presence of tetracycline instead of ampicillin were not affected. The activity of beta-galactosidase, whose gene is located on the same plasmid as beta-lactamase, was not affected...
  35. ncbi Ampicillin-resistant enterococci in a Swedish university hospital: nosocomial spread and risk factors for infection
    E Torell
    Department of Medical Sciences, Uppsala University Hospital, Sweden
    Scand J Infect Dis 33:182-7. 2001
    ..Infection control measures focusing on protecting patients at high risk for ARE infections and further efforts to optimize antimicrobial use are proposed...
  36. ncbi Outbreak of ampicillin-resistant Enterococcus faecium--risk factors for faecal colonisation
    S C Mohn
    Department for Infection Control, Haukeland Hospital and University of Bergen, Norway
    APMIS 108:296-302. 2000
    ..Prolonged antimicrobial therapy and broad-spectrum antibiotics seem to facilitate nosocomial ARE colonisation...
  37. ncbi Worldwide variation in the incidence of Haemophilus influenzae type b meningitis and its association with ampicillin resistance
    B D Gessner
    Association pour l Aide a la Medecine Preventive, Institut Pasteur, Paris, France
    Eur J Clin Microbiol Infect Dis 21:79-87. 2002
    ..In contrast, antibiotic use may contribute to the observed differences in incidence...
  38. ncbi [Profile of antimicrobial resistance of agents causing urinary tract infections in children]
    Leila Ghedira Besbes
    Service de Pediatrie, Hopital Fattouma Bourguiba, Monastir, Tunisie
    Tunis Med 82:299-305. 2004
    ..The management of urinary tract infection in children faces the problem of the emergence of resistant strains to antibiotics. The aim of this study is to precise the frequency of the different germs and their susceptibility to antibiotics...
  39. ncbi [Isolation of beta-lactamase non-producing ampicillin-resistant Haemophilus influenzae (BLNAR) and analysis of its PBP3 gene]
    Fumihiro Yamaguchi
    Department of Clinical Pathology, Showa University, School of Medicine, Shinagawa ku, Tokyo 142 8666
    Rinsho Byori 56:662-70. 2008
    ..5 or microg/ml. When a noticeable MIC increase of ABPC or other beta-lactams in the routine clinical laboratory practice, gene analysis of ftsI gene of the isolates displaying increased MIC is required to measure the spreading of BLNAR...
  40. ncbi Invasive Haemophilus influenzae disease in adults in Taiwan
    Chien Chun Wang
    Division of Infectious Diseases, Department of Medicine, Taipei Veterans General Hospital, and National Yang Ming University, Taipei, Taiwan
    J Microbiol Immunol Infect 41:209-14. 2008
    ..We conducted a retrospective survey of invasive H. influenzae disease in adults in order to better understand the characteristics of clinical presentation and microbiology...
  41. ncbi [Surveillance of antimicrobial susceptibility of Haemophilus influenzae isolates from children in Beijing, Shanghai, and Guangzhou 2000 - 2002]
    Xu zhuang Shen
    Beijing Children s Hospital, Capital University of Medical Sciences, Beijing 100045, China
    Zhonghua Yi Xue Za Zhi 84:1335-9. 2004
    ..To investigate the situation of antibiotic resistance of Haemophilus influenzae isolates from Chinese children...
  42. ncbi [In vitro combined effect of meropenem and various antimicrobial agents against beta-lactamase-nonproducing ampicillin-resistant Haemophilus influenzae and penicillin-resistant Streptococcus pneumoniae]
    Katsunori Kanazawa
    Discovery Research Laboratories II, Research Division, Sumitomo Pharmaceuticals Co, Ltd, 3 1 98, Kasugade Naka, Konohana ku, Osaka 554 0022, Japan
    Jpn J Antibiot 58:168-78. 2005
    ..These findings suggest that combination therapy with MEPM and various antimicrobial agents tested in this study are useful in treating bacterial meningitis caused by BLNAR and PRSP...
  43. ncbi [The prevalence of beta-lactamase negative ampicillin resistant Haemophilus influenzae in Mie Prefecture]
    Tokuyoshi Maruyama
    Division of Blood Transfusion, Mie University Hospital
    Kansenshogaku Zasshi 78:891-7. 2004
    ..In this study, six (8.1%) of 74 isolates were found to be BLNAR, and all of these six isolates were derived from patients of 5 year-old or younger...
  44. pmc Population structure of Enterococcus faecium causing bacteremia in a Spanish university hospital: setting the scene for a future increase in vancomycin resistance?
    Teresa M Coque
    Departamento de Microbiologíca, Servicio de Microbiologia, Hospital Universitario Ramon y Cajal, Carretera de Colmenar, Km 9 1, Madrid 28034, Spain
    Antimicrob Agents Chemother 49:2693-700. 2005
    ..in Spain, a country characterized by a near-absence of resistance to vancomycin and very high rates of ampicillin resistance among enterococci...
  45. pmc Resistance to beta-lactamase inhibitor protein does not parallel resistance to clavulanic acid in TEM beta-lactamase mutants
    William A Schroeder
    Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
    Antimicrob Agents Chemother 46:3568-73. 2002
    ..The slight increases in resistance to inhibition by BLIP seen in the mutants may have been related to the fact that all of the mutations effected changes in the net charge on the TEM protein that could impede interactions with BLIP...
  46. ncbi Occurrence of plasmid-mediated ampicillin resistance among enterobacteria from the ovine rumen
    R Malik
    Institute of Animal Physiology, Slovak Academy of Sciences, 040 01 Kosice, Slovakia
    Folia Microbiol (Praha) 49:187-90. 2004
    ..The small tem1 carrying plasmid and its transfer (mobilization) was detected and partially characterized after conjugation to laboratory Escherichia coli strain...
  47. pmc Genetic and molecular characterization of beta-lactamase-negative ampicillin-resistant Haemophilus influenzae with unusually high resistance to ampicillin
    Frank S Kaczmarek
    Department of Immunology and Infectious Disease, Pfizer Global Research and Development, Groton, Connecticut 06340, USA
    Antimicrob Agents Chemother 48:1630-9. 2004
    ..In an effort to determine the presence of additional mechanism(s) of ampicillin resistance, sequencing of the transpeptidase regions of pbp1a, -1b, and -2 was performed...
  48. pmc Rapidly increasing prevalence of beta-lactamase-nonproducing, ampicillin-resistant Haemophilus influenzae type b in patients with meningitis
    Keiko Hasegawa
    Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5 9 1 Shirokane, Minato ku, Japan
    Antimicrob Agents Chemother 48:1509-14. 2004
    ..Pulsed-field gel electrophoresis suggested the rapid spread of specific H. influenzae type b strains throughout Japan. Expedited vaccination, rapid identification, and judicious antibiotic use could slow their spread...
  49. ncbi Hypermutable Haemophilus influenzae with mutations in mutS are found in cystic fibrosis sputum
    Michael E Watson
    Seattle Biomedical Research Institute, 307 Westlake Ave N, Suite 500, Seattle, WA 98109, USA
    Microbiology 150:2947-58. 2004
    ..Hypermutable H. influenzae with mutations in mutS are prevalent, particularly in the CF lung environment, and may be selected for and maintained by antibiotic pressure...
  50. ncbi Self-transmissible antibiotic resistance to ampicillin, streptomycin, and tetracyclin found in Escherichia coli isolates from contaminated drinking water
    Satish K Walia
    Department of Biological Sciences, Oakland University, Rochester, Michigan 48309, USA
    J Environ Sci Health A Tox Hazard Subst Environ Eng 39:651-62. 2004
    ..These data raise an important question about the impact of E. coli containing self-transmissible R-plasmids as a potential reservoir of virulence genes in drinking water...
  51. ncbi Comparative analysis of amplified fragment length polymorphism and pulsed field gel electrophoresis in a hospital outbreak and subsequent endemicity of ampicillin-resistant Enterococcus faecium
    Roland Jureen
    Institute of Medicine, University of Bergen, 5021 Bergen, Norway
    FEMS Immunol Med Microbiol 40:33-9. 2004
    ..The findings indicate that PFGE and AFLP are equally discriminative and could in this setting be used for typing purposes over the whole 5-year period...
  52. pmc Epidemiology of nalidixic acid resistance and TEM-1- and TEM-52-mediated ampicillin resistance of Shigella sonnei isolates obtained in Korea between 1980 and 2000
    Young Sook Jeong
    Department of Microbiology, Kyungpook National University School of Medicine, Taegu 700 422, Korea
    Antimicrob Agents Chemother 47:3719-23. 2003
    ..Ampicillin and nalidixic acid resistance was found in 30 and 86% of the isolates, respectively. The ampicillin resistance was mediated by a TEM-1 beta-lactamase, and TEM-52 extended-spectrum beta-lactamase was identified in one ..
  53. pmc In vitro and in vivo activities of novel 2-(thiazol-2-ylthio)-1beta-methylcarbapenems with potent activities against multiresistant gram-positive bacteria
    Yutaka Ueda
    Discovery Research Laboratories II, Sumitomo Pharmaceuticals, Research Division, Konohana, Osaka 554 0022, Japan
    Antimicrob Agents Chemother 47:2471-80. 2003
    ....
  54. ncbi Molecular characterisation and mechanisms of resistance of multidrug-resistant human Salmonella enterica serovar Typhimurium isolated in Amiens (France)
    Maurice Biendo
    Laboratoire de Bactériologie et Hygiène, CHU Nord, Place Victor Pauchet, 80054 Amiens, Cedex 1, France
    Int J Antimicrob Agents 26:219-29. 2005
    ..3%) and IF (27.4%) were considered as epidemic patterns. The dendrogram obtained from S. Typhimurium pulsotypes allowed five clones (S1-S5) to be identified, with two prevalent clones comprising 47.8% (S2) and 27.3% (S4) of the isolates...
  55. ncbi In vitro effect of the presence of human albumin or human serum on the bactericidal activity of daptomycin against strains with the main resistance phenotypes in Gram-positives
    F Cafini
    Microbiology Department, School of Medicine, Universidad Complutense, Avda Complutense s n, Madrid, Spain
    J Antimicrob Chemother 59:1185-9. 2007
    ..5 mg/L), protein binding (91.7% versus 36.9%) and thus theoretical free-drug fractions (4.7 versus 16.1 mg/L)...
  56. ncbi Influence of Haemophilus influenzae beta-lactamase production and/or ftsI gene mutations on in vitro activity of and susceptibility rates to aminopenicillins and second- and third-generation cephalosporins
    J Garcia-de-Lomas
    Int J Antimicrob Agents 30:190-2. 2007
  57. pmc Ampicillin-resistant non-beta-lactamase-producing Haemophilus influenzae in Spain: recent emergence of clonal isolates with increased resistance to cefotaxime and cefixime
    Silvia García-Cobos
    Antibiotic Laboratory, Bacteriology Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
    Antimicrob Agents Chemother 51:2564-73. 2007
    ..BLNAR H. influenzae strains have arisen by vertical and horizontal spread and have evolved to adapt rapidly to the increased selective pressures posed by the use of oral penicillins and cephalosporins...
  58. ncbi Evaluation of ceftobiprole medocaril against Enterococcus faecalis in a mouse peritonitis model
    Cesar A Arias
    Center for the Study of Emerging and Reemerging Pathogens, Division of Infectious Diseases, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 2 112, Houston, TX 77030, USA
    J Antimicrob Chemother 60:594-8. 2007
    ..The objective of this study was to assess the in vivo activity of ceftobiprole against four strains of E. faecalis, including beta-lactamase- producing (Bla+) and vancomycin-resistant strains...
  59. pmc Can the Etest correctly determine the MICs of beta-lactam and cephalosporin antibiotics for beta-lactamase-negative ampicillin-resistant Haemophilus influenzae?
    Dewan Sakhawat Billal
    Antimicrob Agents Chemother 51:3463-4. 2007
  60. ncbi Are beta-lactam breakpoints adequate to define non-susceptibility for all Haemophilus influenzae resistance phenotypes from a pharmacodynamic point of view?
    L Alou
    Microbiology Department, School of Medicine, Universidad Complutense, Avda Complutense s n, 28040 Madrid, Spain
    J Antimicrob Chemother 59:652-7. 2007
    ....
  61. ncbi Antimicrobial susceptibility and coagulase gene typing of Staphylococcus aureus isolated from bovine clinical mastitis cases in Turkey
    L Guler
    Veterinary Control and Research Institute, Konya, Turkey
    J Dairy Sci 88:3149-54. 2005
    ..8% of the isolates typed. The results indicate that a few coagulase gene types of S. aureus are responsible for the majority of bovine clinical mastitis cases in one province of Central Anatolia region, Turkey...
  62. pmc Genetic characteristics and clonal dissemination of beta-lactamase-negative ampicillin-resistant Haemophilus influenzae strains isolated from the upper respiratory tract of patients in Japan
    Muneki Hotomi
    Department of Otolaryngology Head and Neck Surgery, Wakayama Medical University, 811 1 Kimiidera, Wakayama Shi, Wakayama, 641 8509, Japan
    Antimicrob Agents Chemother 51:3969-76. 2007
    ..influenzae among medical centers in Japan. The gBLNAR strains show a remarkable prevalence among H. influenzae isolates, with the prevalence increasing with time. This fact should be taken into account when treating URT infections...
  63. ncbi Antibacterial activity and PK/PD of ceftriaxone against penicillin-resistant Streptococcus pneumoniae and beta-lactamase-negative ampicillin-resistant Haemophilus influenzae isolates from patients with community-acquired pneumonia
    Akira Ohno
    Departments of Microbiology and Infectious Disease, Faculty of Medicine, Toho University, 5 21 16 Omorinishi, Ota ku, Tokyo 143 8540, Japan
    J Infect Chemother 13:296-301. 2007
    ..Ceftriaxone has an excellent balance between in vitro antimicrobial activities and pharmacokinetic profiles; and therefore remains effective as a therapeutic agent against PRSP and BLNAR H. influenzae in CAP...
  64. ncbi Presence of vancomycin and ampicillin-resistant Enterococcus faecium of epidemic clonal complex-17 in wastewaters from the south coast of England
    Jonathan L Caplin
    Schools of Environment and Technology, University of Brighton, Brighton BN2 4GJ, UK
    Environ Microbiol 10:885-92. 2008
    ....
  65. ncbi Proteomic analysis of ampicillin-resistant oral Fusobacterium nucleatum
    M Al-Haroni
    Department of Oral Sciences Oral Microbiology, Faculty of Dentistry, and Centre of International Health, University of Bergen, Bergen, Norway
    Oral Microbiol Immunol 23:36-42. 2008
    ..Penicillin-resistant F. nucleatum have been isolated from intra- and extraoral infections. This study aimed to assess ampicillin resistance in F. nucleatum by investigating the synthesis of resistance-associated proteins.
  66. ncbi Antimicrobial resistance of Haemophilus influenzae isolated from the nasopharynx of Japanese children with acute otitis media
    Muneki Hotomi
    Department of Otolaryngology Head and Neck Surgery, Wakayama Medical University, Wakayama, Japan
    Acta Otolaryngol 126:240-7. 2006
    ..A high prevalence of penicillin-binding protein gene-mutated (PGM) strains of Haemophilus influenzae should be taken into account when treating otitis media in children...
  67. ncbi High prevalence of type b beta-lactamase-non-producing ampicillin-resistant Haemophilus influenzae in meningitis: the situation in Japan where Hib vaccine has not been introduced
    Keiko Hasegawa
    Laboratory of Infectious Agents Surveillance, Kitasato Institute for Life Sciences, Kitasato University 5 9 1, Shirokane, Minato ku, Tokyo, Japan
    J Antimicrob Chemother 57:1077-82. 2006
    ....
  68. ncbi Genetic analyses of beta-lactamase negative ampicillin-resistant strains of Haemophilus influenzae isolated in Okinawa, Japan
    Toru Kubota
    First Department of Internal Medicine, Graduate School of Medicine, University of the Ryukyus, Okinawa 903 0215, Japan
    Jpn J Infect Dis 59:36-41. 2006
    ....
  69. pmc Antibiotic susceptibility of invasive Haemophilus influenzae strains in Canada
    Michelle L Sill
    Vaccine Preventable Bacterial Diseases, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
    Antimicrob Agents Chemother 52:1551-2. 2008
    ..5% were beta-lactamase negative ampicillin intermediate, and 2.5% were intermediate to only the 2-microg ampicillin disk. An increase in beta-lactamase-negative ampicillin-intermediate strains has been found...
  70. ncbi Antimicrobial effect of fluoroquinolones for the eradication of nontypeable Haemophilus influenzae isolates within biofilms
    Chiharu Kaji
    Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
    Tohoku J Exp Med 214:121-8. 2008
    ..The results of this study suggest that fluoroquinolones potentially have a role in therapy against diseases caused by both BLNAS and BLNAR NTHi isolates within biofilms...
  71. ncbi High nasopharyngeal carriage of beta-lactamase-negative ampicillin-resistant Haemophilus influenzae in north Indian school-going children
    Amita Jain
    Department of Microbiology, King George s Medical University, Lucknow, U P India
    J Infect Chemother 14:72-4. 2008
    Development of ampicillin resistance in Haemophilus influenzae is a cause of serious concern. Ampicillin resistance in H influenzae is beta-lactamase mediated except in some isolates...
  72. ncbi [Current status of PRSP and BLNAR]
    Muneki Hotomi
    Department of Otolaryngology Head and Neck Surgery, Wakayama Medical University
    Nihon Rinsho 65:441-7. 2007
  73. ncbi Species prevalence and antibacterial resistance of enterococci isolated in Kuwait hospitals
    Edet E Udo
    Department of Microbiology, Faculty of Medicine, Kuwait University, PO Box 24923, Safat 13110, Kuwait
    J Med Microbiol 52:163-8. 2003
    ..All of the vancomycin-resistant strains carried the vanA phenotype and genotype. There was no evidence of clonal spread of the vancomycin-resistant isolates...
  74. ncbi [Haemophilus influenzae: phenotype characteristics of strains isolated in 12 Catalan hospitals over one year]
    Cristina Latorre
    Servicio de Microbiologia, Hospital universitario Sant Joan de Déu Barcelona España
    Enferm Infecc Microbiol Clin 21:126-30. 2003
    ....
  75. ncbi Prevalence of resistance to ampicillin, gentamicin and vancomycin in Enterococcus faecalis and Enterococcus faecium isolates from clinical specimens and use of antimicrobials in five Nordic hospitals
    G S Simonsen
    University of Tromsø and University Hospital of North Norway UNN, Norway
    J Antimicrob Chemother 51:323-31. 2003
    We determined the species distribution and prevalence of ampicillin resistance, high-level gentamicin resistance (HLGR) and vancomycin resistance among clinical enterococcal isolates from five Nordic laboratories (Bergen, Tromsø, ..
  76. pmc Beta-lactamase genes of the penicillin-susceptible Bacillus anthracis Sterne strain
    Yahua Chen
    Department of Microbiology and Molecular Genetics, The University of Texas Houston Health Science Center Medical School, 6431 Fannin Street, Houston, TX 77030, USA
    J Bacteriol 185:823-30. 2003
    ..cereus type II enzyme. The bla1 and bla2 genes confer ampicillin resistance to E. coli and Bacillus subtilis when cloned individually in these species...
  77. ncbi [Antimicrobial susceptibility of Streptococcus pneumoniae and Haemophilus influenzae isolated in major hospitals in Nagano Prefecture]
    Yoshitaka Yamazaki
    Department of Endoscopy, Shinshu University Hospital
    Jpn J Antibiot 55:524-36. 2002
    ..The isolation rates of resistant strains were lower than those reported in a nationwide survey...
  78. ncbi Inhibition, resistance development, and increased antibiotic and antimicrobial resistance caused by nutraceuticals
    PaulaMarieL Ward
    Department of Biochemistry and Microbiology, Cook College, New Jersey Agricultural Experiment Station, Rutgers The State University of New Jersey, New Brunswick 08901 8525, USA
    J Food Prot 65:528-33. 2002
    ..coli ATCC 25922 as the indicator organism, the greatest product-antibiotic marker interaction was with the ampicillin marker. Garlic, Echinacea, and zinc products all caused large increases in the MIC to ampicillin over baseline values...
  79. ncbi [Surveillance for antimicrobial resistance: VIRA Study]
    Juan J Picazo
    Servicio de Microbiología Clínica Hospital Clínico San Carlos Madrid España
    Enferm Infecc Microbiol Clin 20:503-10. 2002
    ..The aim of this multicenter study was to determine the current situation in Spain regarding the resistance patterns of the most common infectious agents to antimicrobial drugs...
  80. ncbi Antimicrobial resistance among invasive Haemophilus influenzae strains: results of a Brazilian study carried out from 1996 through 2000
    S T Casagrande
    Departamento de Bacteriologia, Instituto Adolfo Lutz, Sao Paulo, SP, Brasil
    Braz J Med Biol Res 35:1293-300. 2002
    ..6 to 57.7%, with an overall prevalence of 18.4%. High frequency of beta-lactamase-mediated ampicillin resistance was observed in Distrito Federal (25%), São Paulo (21.7%) and Paraná (18.5%)...
  81. ncbi Antibiotic resistance of enterococci isolated at a teaching hospital in Kuwait
    E E Udo
    Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait
    Diagn Microbiol Infect Dis 43:233-8. 2002
    ..The results demonstrated a low prevalence of vancomycin resistance among Enterococci in this hospital...
  82. ncbi Detection of antimicrobial resistance and extended-spectrum beta-lactamase production in Klebsiella pneumoniae strains from infected neonates
    E Aktas
    Faculty of Medicine, Department of Microbiology and Clinical Microbiology, Ataturk University, Erzurum, Turkey
    J Int Med Res 30:445-8. 2002
    ....
  83. ncbi Diversity of ampicillin-resistance genes in Haemophilus influenzae in Japan and the United States
    Keiko Hasegawa
    Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Tokyo, 108 8641, Japan
    Microb Drug Resist 9:39-46. 2003
    ..Differences in proportions of respective AMP-resistant genes in H. influenzae isolates between the two countries might reflect differences in antibiotic agents ordinarily given to outpatients with community-acquired bacterial infections...
  84. ncbi Differentiation of beta-lactamase-negative ampicillin-resistant Haemophilus influenzae from other H. influenzae strains by a disc method
    Kimiko Ubukata
    Center for Epideniology and Clinical Microbiology, Pharmaceutical Research Center, Meiji Seika Kaisha, Ltd, 760 Morookacho, Kohoku Ku, Yokohama 222 8567, Japan
    J Infect Chemother 8:50-8. 2002
    ....
  85. pmc [Standardization of the Neisseria meningitidis antibiogram. Detection of strains relatively resistant to penicillin]
    P Nicolas
    , France
    Bull World Health Organ 76:393-400. 1998
    ..Based on our results and literature data on pharmacokinetics, we propose critical concentrations for these various antibiotics as well as critical diameters for chloramphenicol and rifampicin discs...
  86. pmc Mutants carrying conditionally lethal mutations in outer membrane genes omsA and firA (ssc) are phenotypically similar, and omsA is allelic to firA
    R Vuorio
    Department of Bacteriology and Immunology, University of Helsinki, Finland
    J Bacteriol 174:7090-7. 1992
    ..All of these findings are consistent with our concept that firA is an essential gene involved in generation of the outer membrane...
  87. pmc Molecular characterization of ampicillin-resistant Enterococcus faecium isolates from hospitalized patients in Norway
    Roland Jureen
    Institute of Medicine, University of Bergen, Bergen, Norway
    J Clin Microbiol 41:2330-6. 2003
    ..protein 5 gene (pbp5) was determined, and sequence differences were associated with the level of ampicillin resistance. This study indicates that the majority of ampicillin-resistant E...
  88. pmc A secondary drug resistance mutation of TEM-1 beta-lactamase that suppresses misfolding and aggregation
    V Sideraki
    Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA
    Proc Natl Acad Sci U S A 98:283-8. 2001
    ..Thus, the M182T substitution is an example of a naturally occurring mutation that has evolved to alter the folding pathway of a protein and confer a selective advantage during the evolution of drug resistance...
  89. pmc Molecular characterization of multidrug-resistant Salmonella enterica subsp. enterica serovar Typhimurium isolates from swine
    Wondwossen Abebe Gebreyes
    Department of Farm Animal Health Resources Management, College of Veterinary Medicine, North Carolina State University, Raleigh 27606, USA
    J Clin Microbiol 40:2813-22. 2002
    ..Two strains (strains UT08 and UT12) had a single, identical plasmid carrying bla(TEM) (which encodes ampicillin resistance), aphA1-Iab (which encodes kanamycin resistance), strA and strB (which encode streptomycin resistance), ..
  90. ncbi Antimicrobial activity of a novel peptide deformylase inhibitor, LBM415, tested against respiratory tract and cutaneous infection pathogens: a global surveillance report (2003-2004)
    Amy A Watters
    JMI Laboratories, 345 Beaver Kreek Centre, Suite A, North Liberty, IA 52317, USA
    J Antimicrob Chemother 57:914-23. 2006
    ....
  91. pmc Study of mechanisms of electric field-induced DNA transfection. I. DNA entry by surface binding and diffusion through membrane pores
    T D Xie
    Department of Biochemistry, University of Minnesota College of Biological Sciences, St Paul 55108
    Biophys J 58:13-9. 1990
    ..pBR322 DNA carries an ampicillin resistance gene: E...
  92. ncbi Comparative study of Vibrio cholerae non-O1 isolated from 2 rivers according to antibiotics and metals susceptibility
    H Uchiyama
    Department of Public Health, School of Hygienic Sciences, Kitasato University
    Kansenshogaku Zasshi 65:1541-9. 1991
    ..2) 64.3% (74/115) of the strains isolated from the two rivers showed ampicillin resistance and produced beta-lactamase. 3) 67...
  93. ncbi Changes in antibiotic resistance rates of invasive Haemophilus influenzae isolates in England and Wales over the last 20 years
    Shamez Ladhani
    Immunisation Department, Centre for Infections, Health Protection Agency, 61 Colindale Avenue, London NW9 5EQ, UK
    J Antimicrob Chemother 62:776-9. 2008
    ..The aim of this study was to determine trends in antibiotic resistance profiles of invasive clinical Haemophilus influenzae isolates over the last 20 years...
  94. ncbi High ampicillin resistance in different biotypes and serotypes of Haemophilus influenzae colonizing the nasopharynx of healthy school-going Indian children
    Amita Jain
    Department of Microbiology, King George s Medical University, Lucknow, UP, 226003, India
    J Med Microbiol 55:133-7. 2006
    ..of otitis media, sinusitis, meningitis, pneumonia and septicaemia in children, and the development of ampicillin resistance in H. influenzae is a cause of serious concern...
  95. ncbi Physical linkage of Tn3 and part of Tn1721 in a tetracycline and ampicillin resistance plasmid from Salmonella Typhimurium
    Frédérique Pasquali
    Department of Food Science, Alma Mater Studiorum, University of Bologna, via San Giacomo 9, 40126 Bologna, Italy
    J Antimicrob Chemother 55:562-5. 2005
    ..enterica serovar Typhimurium, which mediates resistance to tetracyclines and ampicillin, was determined. The plasmid was analysed for potential reading frames and structural features indicative of transposons and transposon relics...
  96. ncbi The presence of antibiotic resistance and integrons in Escherichia coli isolated from compost
    Spencer Heringa
    Department of Food Science and Human Nutrition, Clemson University, Clemson, South Carolina 29634, USA
    Foodborne Pathog Dis 7:1297-304. 2010
    ..Resistance phenotypes comprised various combinations of seven antibiotics with a prevalence of ampicillin resistance in 63% of isolates (n = 56) from California, and tetracycline resistance in 37% of isolates (n = 62) from ..
  97. ncbi Apparent plateau in beta-lactamase production among clinical isolates of Haemophilus influenzae and Moraxella catarrhalis in the United States: results from the LIBRA Surveillance initiative
    Mark E Jones
    Focus Technologies, Koninginneweg 11, 1217 KP, Hilversum, The Netherlands
    Int J Antimicrob Agents 19:119-23. 2002
    ..5 mg/l and < or =0.25 mg/l, respectively. beta-Lactamase production was found to confer ampicillin resistance in nearly all isolates. For M. catarrhalis, beta-lactamase-negative isolates had MICs < or =0.12-0...
  98. pmc Antibiotic resistance in food-borne bacterial contaminants in Vietnam
    Thi Thu Hao Van
    School of Applied Sciences, RMIT University, Building 3, Level 1, Room 2, City Campus, Melbourne, Victoria 3001, Australia
    Appl Environ Microbiol 73:7906-11. 2007
    ..gene cassettes dhfrXII, dfrA1, and dhfrA17 (trimethoprim resistance), the beta-lactamase gene bla(PSE1) (ampicillin resistance), and catB3 (chloramphenicol resistance)...
  99. ncbi Combination of altered PBPs and expression of cloned extended-spectrum beta-lactamases confers cefotaxime resistance in Haemophilus influenzae
    Bulent Bozdogan
    Mikrobiyoloji ve Klinik Mikrobiyoloji, Adnan Menderes Universitesi Hastanesi, Aydin, Turkey
    J Antimicrob Chemother 57:747-9. 2006
    ..beta-Lactamase-negative ampicillin resistance (BLNAR) also occurs as a result of PBP3 modifications...
  100. ncbi Antibiotic resistance in Campylobacter jejuni and Campylobacter coli isolated from poultry in the South-East Queensland region
    Jeanette K Miflin
    Department of Primary Industries and Fisheries, Animal Research Institute, Yeerongpilly, Queensland 4105, Australia
    J Antimicrob Chemother 59:775-8. 2007
    ..The aim of this study was to determine the antimicrobial resistance patterns of 125 Campylobacter jejuni and 27 Campylobacter coli isolates from 39 Queensland broiler farms...
  101. ncbi Occurrence of integrons and antimicrobial resistance genes among Salmonella enterica from Brazil
    Gisele Peirano
    Oswaldo Cruz Institute Avenida Brasil 4365, 21045 900 Rio de Janeiro, Brazil
    J Antimicrob Chemother 58:305-9. 2006
    ..To determine the occurrence of antimicrobial resistance genes and role of integrons among 135 antimicrobial-resistant Salmonella enterica from Brazil...

Research Grants15

  1. POSITIVE SELECTION SYSTEMS USING MARKER GENES
    John Naleway; Fiscal Year: 2005
    ..for administration to animal cells or bacteria that contain either the beta-galactosidase (lacZ) or ampicillin resistance (Beta-lactamase, amp) genes as gene fusion markers...
  2. Does ampicillin resistance or clade type determine GI colonization by E. faecium?
    KAVINDRA SINGH; Fiscal Year: 2013
    ..We also found that pbp5 is a core gene that encodes, in HA-clade strains, PBP5-R (ampicillin resistance) and varies from PBP5-S (ampicillin MICs <4) of CA-clade isolates by ~5%...
  3. VIRULENCE IN COXIELLA BURNETTII
    HERBERT THOMPSON; Fiscal Year: 1999
    ..In aim 1, organisms will be transformed to ampicillin resistance using a mixture of plasmids en masse via electroporation. These plasmids carry the C...
  4. A Unified Reporter Gene for Multi-Modality Imaging
    Jianghong Rao; Fiscal Year: 2005
    ..An ampicillin resistance gene (encoding a bacterial enzyme, beta-lactamase) is an outstanding reporter for optical measurement of ..
  5. GENETIC STRATEGIES FOR DRUG TARGETING
    John Naleway; Fiscal Year: 1999
    ..for administration to animal cells or bacteria that contain either the beta- galactosidase (lac Z) or ampicillin resistance (beta-lactamase, amp) genes as gene fusion markers...
  6. In vivo regulation of M. tuberculosis cell wall lipids
    Lee W Riley; Fiscal Year: 2010
    ..tuberculosis and granulomas may contribute to our understanding of the mechanism of persistence of M. tuberculosis that could lead to new tests to differentiate active TB from latent TB infection. ..
  7. Orgin of multidrug resistant uropathogenic E. coli
    Lee Riley; Fiscal Year: 2008
    ..This knowledge should lead to the implementation of improved control of drug-resistant infectious diseases. ..
  8. Therapeutic vaccine against tuberculosis
    Lee Riley; Fiscal Year: 2006
    ..Therapeutic vaccines against TB is a major priority in TB control, and we have an opportunity to identify such products by a novel approach using a simple, inexpensive, and reproducible animal model. ..
  9. Mechanisms of Tandem Repeat Deletion in Group B Strep
    KAREN PUOPOLO; Fiscal Year: 2006
    ..The training goal of this project is to prepare the applicant for a career in bacterial genetic research by providing didactic education and the opportunity to develop laboratory expertise in this rapidly evolving field. ..
  10. ANTIOXIDANT GENES OF MYCOBACERIUM TUBERCULOSIS
    Lee Riley; Fiscal Year: 2001
    ....
  11. Epidemiology of an uropathogenic E coli clonal group
    Lee Riley; Fiscal Year: 2003
    ..coli can be spread by contaminated ingestible vehicles, and use the data generated from this project to design long-term studies to better characterize risk factors associated with CgA infection. ..
  12. MOLECULAR BIOLOGY OF INFECTION WITH M TUBERCULOSIS
    Lee Riley; Fiscal Year: 2002
    ..In addition, these studies may identify several potential targets for new chemotherapeutic agents or vaccine candidates. ..
  13. FREE SOLUTION MOBILITY AS A PROBE OF DNA ELECTROSTATICS
    Nancy Stellwagen; Fiscal Year: 2004
    ..Further work entails an examination of the interaction between DNA and commonly used buffers in electrophoresis experiments. ..