Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"oxacillin"”.
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Characterization of Vancomycin Resistance in Staphylococcus Aureus
… the relationship between homotypic oxacillin resistance and increased vancomycin resistance in the absence of the van genes was investigated. Vancomycin passage of two heterotypic methicillin resistant S. aureus (MRSA) caused these strains to convert to homotypic oxacillin resistance …
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ΠΡΟΣΔΙΟΡΙΣΜΟΣ ΠΕΝΙΚΙΛΛΙΝΩΝ ΣΤΟ ΓΑΛΑ ΑΓΕΛΑΔΑΣ ΜΕ ΥΓΡΟΧΡΩΜΑΤΟΓΡΑΦΙΑ ΥΨΗΛΗΣ ΑΠΟΔΟΣΗΣ
… THE DETERMINATION OF PENICILLIN G, PENICILLIN V, OXACILLIN AND CLOXACILLIN IN COW'S MILK, HAS BEENDEVELOPED. PENICILLINS ARE EXTRACTED FROM MILK WITH DICHLOROMETHANE. CLEAN UP IS ACCOMPLISHED BY PARTITIONING BETWEEN BUFFERS AND ORGANIC SOLVENTS . PENICILLINS ARE FINALLY EXTRACTED INTO CHLOROFORM …
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Electrochemical synthesis and characterisation of polypyrrole/chitosan films doped with molecular anions
… dexamethasone (an anti-inflammatory drug) and oxacillin (an antibiotic). All drug-doped films were grown at a constant potential of 0.80 V vs SCE until a charge density of 0.25 C cm-2 was achieved. Initially, a novel approach was developed to prepare the polypyrrole-chitosan composite films by …
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Assessment of Antimicrobial Resistance in Pathogens Responsible for Causing Bovine Mastitis in Kentucky
… seen in penicillin (7%), ampicillin (5%), oxacillin (2%), and cephalothin (2%). Coagulase negative Staphylococci species showed their highest resistance to oxacillin (31%), pirlimycin (23%), tetracycline (17%), and ampicillin (14%). Streptococci species were the least susceptible group of …
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Understanding Bacterial Resistance and Dissemination: The Impact of Biocide Priming
… S. aureus showed a four-fold increase in MIC to oxacillin, both thioridazine and chlorpromazine increased susceptibility to oxacillin. Sequence analysis of norA and the norA promoter region showed a single adenine to thymine change in codon 313, corresponding to isoleucine to phenylalanine change …
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The Effect of Antibiotics on Toxin Gene Expression in PVL-positive Staphylococcus aureus Strains
… mRNA levels as well as at protein levels, but oxacillin increased spa and lukSF-PV mRNA levels, as well as Spa at protein levels. Protein synthesis inhibitors clindamycin and linezolid were both caused an increase of lukSF-PV mRNA levels, but they both decreased spa mRNA levels, when cultures …
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Investigating The Functional Relationships Of RND Efflux Pumps In Methicillin Resistant Staphylococcus Aureus
… more susceptible to lysostaphin, vancomycin and oxacillin, and grows faster in Mueller-Hinton broth. Most notably, when evaluating the relationship between these transporters, inducible expression of FarE in fatty acids was abolished in FemT-deficient mutants. These findings suggest an interplay …
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Prevalence and Characterization of Staphylococcus Species, Including MRSA, in the Home Environment
… (92/304, 30.3%). Of those 92, four demonstrated oxacillin resistance and three were identified as MRSA (3/92, 3.4%) by displaying mauve colonies on CHROMagar. The findings of this study indicate potential exposure risks from Staphylococcus in everyday home environments, especially …
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A study of clinical strains of Pseudomonas Aeruginosa and the investigation of antibiotic resistance mechanisms in the multidrug resistant strain PA13
… to penicillin G, ampicillin, cephalothin, cloxacillin, oxacillin, amoxicillin, cefotaxime, moxalactam, sulphatriad cotrimoxazole, chloramphenicol and tetracycline. All were sensitive to ceftazidime, piperacillin-tazobactam, cefepime, ceftriaxone, meropenem, aztreonam, amikacin, apramycin, …
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Comparative Studies of Escherichia Coli and Salmonela Servars isolated from Kafue Lechwe and Pastrol Cattle in the Interface Areas of the Kafue Flats of Zambia
… to other antimicrobials tested (co-trimoxazole, oxacillin, tetracycline, amoxicillin, cephalexin and penicillin G) showed values below 7.1%. The antibiotics to which Salmonella isolates from Kafue lechwe were most resistant to were metronidazole (100%), followed by penicillin G (89.2 %), …
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Entwicklung eines Biosensors zum Nachweis von Antibiotika und Sulfonamiden in Milch- Herstellung der immunchemischen Komponenten
… the European Union (ampicillin, amoxicillin, oxacillin, cloxacillin, dicloxacillin and nafcillin) was enabled. The practical use of the enzyme immunoassay was demonstrated by analyzing artificially contaminated and violative incurred milk samples (n = 321). For the development of indirect …
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The Role of Lysogenic Bacteriophage in Virulence and Survival of Streptococcus Pyogenes
… also able to show its synergistic activity with oxacillin in in vitro and in vivo models. This work highlights the potential of ClyS as a novel therapeutic agent for the treatment of MRSA and other staphylococcal infections.</p>
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Common bacteria causes of neonatal sepsis and antimicrobial susceptibility at the university teaching hospital, Lusaka, Zambia?
… (100%), Chloramphenicol (84%), Cefotaxime (70%), Oxacillin (69%) and Gentamycin (70.6%). Penicillin (65%) showed high resistance to staphylococcus aureus and coagulase negative staphylococcus. The most common clinical presenting features were fever, irritability and poor feeding. Neonates born …
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Common bacteria causes of neonatal sepsis and antimicrobial susceptibility at the university teaching hospital, Lusaka, Zambia?
… (100%), Chloramphenicol (84%), Cefotaxime (70%), Oxacillin (69%) and Gentamycin (70.6%). Penicillin (65%) showed high resistance to staphylococcus aureus and coagulase negative staphylococcus. The most common clinical presenting features were fever, irritability and poor feeding. Neonates born …
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Movement and Stability of the Staphylococcal Cassette Chromosome mec among Staphylococcus aureus
… S. aureus (MSSA), SCCmec remnant MSSA, and oxacillin-susceptible, mecA-positive, PBP 2a-positive (OS) MRSA. The deletions which occurred in SCCmec remnants all occurred site-specifically at the 5 ́ end of IS431 insertion sequence elements, but randomly at the other end. The explanation of …
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Assessment of microbial quality and safety of ground beef/product sold in differrent retailers around Thohoyandou Area, Vhembe District, Limpopo
… showed high resistance to Cefoxitin (93.33%) and Oxacillin (93.33%). Out of 30 E. coli isolates subjected to mPCR assay, 23 isolates were of different pathotypes with EPEC (53.33%) being the most prevalent pathotype. Asta with 73.33% was the dominant virulence gene obtained. Thirty (30) E. coli …
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REDUCING ANTIMICROBIAL RESISTANCE RISKS AND ANTIBIOTIC USAGE IN DAIRY FARMING: MICROBIOLOGICAL INSIGHTS AND ALTERNATIVE STRATEGIES
… strains were susceptible to cephalosporins and oxacillin, with low macrolide resistance (4%) and multidrug resistance (6%). AMR genes were linked to susceptibility, with blaZ present in 94% of CLR strains, which also exhibited biofilm formation and virulence factors. The second study was …
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Cell wall metabolite levels as a function of the growth phase in Staphylococcus aureus and library screening for synergistic combinations of FDA approved drugs against methicillin resistant S. aureus
… included β-lactamase resistant β-lactams (cloxacillin, dicloxacillin, flucloxacillin, oxacillin, nafcillin, and cefotaxime). There was also evidence of synergy between ceftobiprole and both meropenem and imipenem. Vancomycin, balofloxacin, and floxuridine showed weak synergy. A similar …
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Molecular investigation of the influence of environmental factors and subinhibitory antibiotic concentrations on the biofilm formation in Staphylococcus epidermidis
… 8 to 11-fold, respectively, whereas penicillin, oxacillin, gentamicin, clindamycin, vancomycin, teicoplanin, ofloxacin, and chloramphenicol had no effects. A weak induction was recorded for sub-MICs of erythromycin. Both quinupristin/ dalfopristin and tetracyline exhibited a strong postexposure …
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Detección y caracterización de péptidos con actividad antimicrobiana en aislados de Staphylococcus. Aplicación al ámbito agroalimentario y en salud pública
… with antibiotics (synergy with clindamycin, oxacillin, and chloramphenicol) has been demonstrated. On the other hand, the potential of antimicrobial-producing staphylococci in the modulation of the nasotracheal microbiota has been evaluated using the stork model. For this purpose, the AA of …