Sökning: "Citrobacter freundii"

Hittade 4 avhandlingar innehållade orden Citrobacter freundii.

  1. 1. Chromosomal β-lactamases in enterobacteria and in vivo evolution of β-lactam resistance

    Författare :Sven Bergström; Umeå universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Gram negative bacteria; ß-lactamase genes; divergence of neighbouring cperons; ß-lactamase hyperproduction; evolution of control sequences;

    Sammanfattning : The ß-lactam antibiotics are the most important antibacterial agents in the treatment of infectious diseases. A severe problem in ß-lactam therapy is the emergence of ß-lactam resistant bacteria. Clinical ß-lactam resistance is most often due to the production of ß-lactamases. ß-lactamase genes reside either on plasmids or on the chromosome. LÄS MER

  2. 2. Studies on two bacterial resistance mechanisms to ß-lactam antibiot : extended spectrum ß-lactamases in Klebsiella oxytoca and methicillin resistance in staphylococci

    Författare :Shang Wei Wu; Karolinska Institutet; Karolinska Institutet; []

    Sammanfattning : Eleven clinical isolates of Klebsiella oxytoca from Stockholm hospitals were found to be resistant to aztreonam and cefuroxime (MIC > 16 mg/L). The resistance was caused by a ß-lactamase with pI 5.25 and designated KH. Assay of the substrate profiles revealed that the KH ß-lactarnase was similar to the chromosomally encoded OXY-2 ß-lactamase. LÄS MER

  3. 3. Studies of Carbohydrate-Binding Proteins from Enterotoxigenic Escherichia coli

    Författare :Lena Jansson; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :Carbohydrate recognition; ETEC colonization factors; CFA I fimbriae; CS6 protein; heat-labile enterotoxin;

    Sammanfattning : Knowledge about the carbohydrate binding specificity of pathogens can give an increased understanding of their virulence strategies, and is also of importance for the development of anti-adhesive therapies and vaccines. Enterotoxigenic Escherichia coli (ETEC) is a well-known causative agent of diarrheal disease. LÄS MER

  4. 4. Novel diagnostic methods for rapid characterization of extended-spectrum beta-lactamase- and carbapenemase-producing Enterobacteriaceae

    Författare :Muhammad Humaun Kabir; Karolinska Institutet; Karolinska Institutet; []

    Sammanfattning : Klebsiella pneumoniae and Escherichia coli are two of the most clinically important pathogens of the family Enterobacteriaceae. Both can cause severe infections includ-ing urinary tract infections (UTI), bloodstream infections (BSI) and pneumonia. Both are also involved in dissemination of antibiotic resistance. LÄS MER