title: [Antibiotic resistance and molecular typing of Listeria monocytogenes from foods in Shandong province from 2009 to 2010].
abstract: OBJECTIVE
  To know the antibiotic resistance and molecular characteristics of Listeria monocytogenes in Shandong province and to study the relationship between antibiotic resistance phenotypes and genome types.
  
  
  METHODS
  From 2009 to 2010, a total of 80 Listeria monocytogenes isolates were collected from raw meat, cooked meat, aquatic products and other foods in 6 cities of Shandong province. The antibiotic susceptibility was measured by broth microdilution method, PFGE was performed for molecular typing and the relationship between antimicrobial resistance and PFGE patterns was analyzed.
  
  
  RESULTS
  16.25% (13/80) of the isolates were drug-resistant. Imipenem resistance was the most prevalent (12.50%, 10/80), followed by tetracycline and doxycycline (3.75%, 3/80 and 2.50%, 2/80). A total of the 80 isolates were subtyped into 9 antibiotic resistance patterns and 34 PFGE types which were largely dominated by the type 17 and 29. Antibiotic resistance pattern A corresponded to 79.41% (27/34) of PFGE types.
  
  
  CONCLUSIONS
  The antibiotic resistance of Listeria monocytogenes in Shandong province is serious from 2009 to 2010 and there is no correlation between PFGE types and antibiotic resistance patterns.
authors.affiliation: Department of Epidemiology and Health Statistics, School of Public Health, Shandong University, Jinan 250012, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Jia
authors.forename: Zhen-wang
authors.initials: ZW
authors.lastname: Bi
authors.forename: Yu-zhen
authors.initials: YZ
authors.lastname: Chen
authors.forename: Pei-bin
authors.initials: PB
authors.lastname: Hou
authors.forename: Ming
authors.initials: M
authors.lastname: Zhang
authors.forename: Kun
authors.initials: K
authors.lastname: Shao
authors.forename: Zhen-qiang
authors.initials: ZQ
authors.lastname: Bi
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D015373:Bacterial Typing Techniques; D002681:China; D024881:Drug Resistance, Bacterial; D005516:Food Microbiology; D008089:Listeria monocytogenes / Q000145:classification* / Q000187:drug effects* / Q000302:isolation & purification; D008826:Microbial Sensitivity Tests
chemical_list: D000900:Anti-Bacterial Agents