Antimicrobial Susceptibilities of Campylobacter Strains Isolated from Broilers in the Southern Part of Japan from 1995 to 1999.

Chuma, Takehisa; Ikeda, Takashi; Maeda, Takatoshi; Niwa, Hidekazu; Okamoto, Karoku

doi:10.1292/jvms.63.1027

Cited by 28 publications

(20 citation statements)

References 24 publications

(26 reference statements)

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“…enterica and Campylobacter spp., respectively. These frequencies were consistent with those reported in some previous studies (14,15), but higher than those in other reports (5,(16)(17)(18)(19). Several factors might influence the prevalence of Salmonella and Campylobacter isolates in poultry meat: environmental factors, such as the geographical location of farms and the season in which the study was carried out, as well as differences in bacterial culture conditions and sampling methods (20).…”

Section: Discussionsupporting

confidence: 91%

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Prevalence and Characteristics of Salmonella and Campylobacter in Retail Poultry Meat in Japan

et al. 2017

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Section: Discussionsupporting

confidence: 91%

“…antimicrobial susceptibilities of Salmonella and Campylobacter in Japan (5,6). However, there is a paucity of data concerning the association of genetic types of Salmonella and Campylobacter with their geographical distribution and antimicrobial resistance profiles.…”

Section: Discussionmentioning

confidence: 99%

Prevalence and Characteristics of Salmonella and Campylobacter in Retail Poultry Meat in Japan

et al. 2017

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“…In Japan, C. jejuni and C. coli isolated from humans, cattle, pigs and broilers between 1979 and 1982 were all susceptible to quinolones [21], whereas resistant isolates have been recognized in human patients since 1989 and the resistance rate is increasing [24]. Quinolone-resistant C. jejuni and C. coli were also isolated from broilers in our previous survey between 1995 and 1999 [5].…”

mentioning

confidence: 72%

Acquisition of Quinolone Resistance and Point Mutation of the gyrA Gene in Campylobacter jejuni Isolated from Broilers and in vitro-Induced Resistant Strains

Chuma

Maeda

Niwa

et al. 2004

The Journal of Veterinary Medical Science

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ABSTRACT. A dramatic rise in the number of resistant Campylobacter to quinolones has been documented in human patients and domestic animals. In this study, the mechanism of acquisition of quinolone resistance was studied by detecting point mutations in the gyrA gene of Campylobacter strains obtained from broilers and strains with in vitro-induced resistance. The minimal inhibitory concentrations (MICs) of norfloxacin (NFLX) and ofloxacin (OFLX) for the strains that had no point mutation were slightly increased from the so urce strain (Campylobacter jejuni ATCC 33560). The MICs of nalidixic acid (NA), NFLX, and OFLX for the strains that had the point mutation at Thr-86 were 100 or 200 µg/ml, 50 µg/ml, and 25 µg/ml, respectively. The MIC of NA for the strain that had a point mutation at Asp-90 higher than those for the strains that had the point mutation at Thr-86, but the MICs of NFLX and OFLX were relatively lower than those for the strains that had point mutation at Thr-86. These findings suggest that the degree of antimicrobial resistance against NA, NFLX, and OFLX in the in vitro-induced C. jejuni strains was associated with the location of the point mutation in gyrA. On the other hand, a point mutation in all seven resistant strains isolated from broilers was located only at Thr-86, while the MICs of the three quinolones varied in each wild strain. This suggests that another mechanism might also be involved in the acquisition of quinolone resistance in C. jejuni wild strains.

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“…Six samples yielded resistant isolates, all of which were resistant to erythromycin. These findings are quite surprising as there have been reports of multiple-antibiotic resistance in C. coli (3,38). One of the isolates, isolate 1957 from soil, exhibited the highest MIC (Ͼ256 g ml Ϫ1 ).…”

Section: Vol 70 2004 Characteristics Of C Coli From Cheshire Studymentioning

confidence: 89%

Genotypic and Antibiotic Susceptibility Characteristics of a Campylobacter coli Population Isolated from Dairy Farmland in the United Kingdom

Leatherbarrow

Kemp

Williams

et al. 2004

Appl Environ Microbiol

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Campylobacter infections are the most common cause of bacterial enteritis in humans, and nearly 8% of such infections are caused by Campylobacter coli. Most studies have concentrated on Campylobacter jejuni, frequently isolated from intensively farmed poultry and livestock production units, and few studies have examined the spread and relatedness of Campylobacter across a range of geographical and host boundaries. Systematic sampling of a 100-km 2 area of mixed farmland in northwest England yielded 88 isolates of C. coli from a range of sample types and locations, and water was heavily represented. Screening for antibiotic resistance revealed a very low prevalence of resistance, while genotyping performed by using three methods (flaA PCR restriction fragment length polymorphism [RFLP], pulsed-field gel electrophoresis [PFGE], and fluorescent amplified fragment length polymorphism [fAFLP]) provided insights into the genomic relatedness of isolates from different locations and hosts. Isolates were classified into 23 flaA groups, 34 PFGE groups, and five major fAFLP clusters. PFGE banding analysis revealed a high level of variability and no clustering by sample type. fAFLP and flaA analyses successfully grouped the isolates by sample type. We report preliminary findings suggesting that there is a strain of C. coli which may have become adapted to survival or persistence in water and that there is a group of mainly water-derived isolates from which unusual flaA PCR fragments were recovered.

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Antimicrobial Susceptibilities of Campylobacter Strains Isolated from Broilers in the Southern Part of Japan from 1995 to 1999.

Cited by 28 publications

References 24 publications

Prevalence and Characteristics of <i>Salmonella</i> and <i>Campylobacter</i> in Retail Poultry Meat in Japan

Prevalence and Characteristics of <i>Salmonella</i> and <i>Campylobacter</i> in Retail Poultry Meat in Japan

Acquisition of Quinolone Resistance and Point Mutation of the gyrA Gene in Campylobacter jejuni Isolated from Broilers and in vitro-Induced Resistant Strains

Genotypic and Antibiotic Susceptibility Characteristics of a Campylobacter coli Population Isolated from Dairy Farmland in the United Kingdom

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