請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/66665
標題: Analysis of Ciprofloxacin-Resistant Salmonella Strains from Swine, Chicken, and Their Carcasses in Taiwan and Detection of parC Resistance Mutations by a Mismatch Amplification Mutation Assay PCR
作者: Lin, C.C.
張照勤
Chen, T.H.
Wang, Y.C.
Chang, C.C.
Hsuan, S.L.
Chang, Y.C.
Yeh, K.S.
宣詩玲
陳德勛
關鍵字: enterica serotype choleraesuis
level fluoroquinolone resistance
quinolone resistance
antimicrobial resistance
united-states
gyra
typhimurium
humans
mechanisms
dna
期刊/報告no:: Journal of Food Protection, Volume 72, Issue 1, Page(s) 14-20.
摘要: One hundred thirty-three Salmonella strains isolated from the viscera of swine, chicken, and carcasses of swine and chicken in Taiwan from 2004 to 2006 were identified to serotype level and analyzed for their susceptibility to ciprofloxacin. In total, 76 (57%) strains of the Salmonella isolates exhibited high-level resistance to ciprofloxacin, having MICs ranging from 16 to 64 mu g/ml. DNA sequence analysis revealed that mutations in the quinolone resistance-determining regions of gyrA (Ser83Phe, Asp87Gly or Asp87Asn), parC (Ser80Arg, or Ser80Ile or Glu84Lys), and parE (Ser458Pro) genes were associated with the Salmonella strains that demonstrated resistance to ciprofloxacin. A mismatch amplification mutation assay (MAMA)-PCR was developed to identify mutations in parC at codons 80 and 84. Specific PCR products were only recovered from ciprofloxacin-resistant Salmonella strains but not from the susceptible strains. MAMA-PCR targeting the mutations in parC correlated with what DNA sequencing revealed. In conclusion, monitoring ciprofloxacin-resistant Salmonella from animal sources should be performed on a regular basis. MAMA-PCR targeting parC could provide a fast method for those laboratories interested in quickly characterizing the resistance profile and with little access to DNA sequencing facilities.
URI: http://hdl.handle.net/11455/66665
ISSN: 0362-028X
顯示於類別:微生物暨公共衛生學研究所

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