&lt;i&gt;In vitro&lt;/i&gt; Activity of 24 Antimicrobial Agents against &lt;i&gt;Staphylococcus&lt;/i&gt; and &lt;i&gt;Streptococcus&lt;/i&gt; Isolated from Diseased Animals in Japan

Morioka, Ayako; Asai, Tetsuo; Ishihara, Katsuya; Kojima, Akira; Tsutsumi, Yutaka; Takahashi, Toshio

doi:10.1292/jvms.67.207

Cited by 10 publications

(12 citation statements)

References 15 publications

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“…A previous study showed that 13 (31.7%) of 41 S. aureus isolates from bovine mastitis exhibited resistance to PC (MIC: higher than 0.78 Units/ml, equivalent to 0.47 µg/ml) in 1997 and 1998 [29]. High resistance rates of staphylococci to PC were previously reported in porcine isolates (58.3%) [20] and pork isolates (more than 60%) [8] as well as this study. Almost half of the porcine isolates were resistant to OTC in this study.…”

Section: Discussionsupporting

confidence: 83%

“…Although FQ resistance was reported in S. epidermidis from a pig [20], there are no FQ-resistant S. aureus obtained from food-producing animals in 2000 [20,29]. Most of the ERFX-resistant isolates were multidrugresistant in this study.…”

Section: Discussionmentioning

confidence: 52%

“…FQ resistance was identified in S. aureus from food-producing animals [19], but not in Japan [20,29]. In addition, transmission of methicillin-resistant S. aureus (MRSA) to humans through livestock products is a worldwide concern on public health [1,2,11,27].…”

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confidence: 99%

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Prevalence and Mechanism of Antimicrobial Resistance in Staphylococcus aureus Isolates from Diseased Cattle, Swine and Chickens in Japan

Baba

Ishihara

Ozawa

et al. 2012

The Journal of Veterinary Medical Science

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ABSTRAcT. Antimicrobial administration is essential for the control and treatment of diseases in animals, but the emergence and prevalence of antimicrobial-resistant Staphylococcus aureus is a significant concern during animal production. Here we investigated the antimicrobial susceptibility of S. aureus from diseased food-producing animals and molecularly characterized the methicillin-resistant and fluoroquinolone-resistant isolates. A total of 290 S. aureus isolates obtained from cattle (n=246), swine (n=16), and chickens (n=28) between 2003 and 2009 were examined for antimicrobial susceptibility against 9 antimicrobials using an agar dilution method. Resistance to penicillin (PC) was most frequently found (24.8%), followed by oxytetracycline (OTC, 10.0%), dihydrostreptomycin (4.1%), erythromycin (EM, 3.1%), enrofloxacin (ERFX, 2.1%), and kanamycin (1.7%). The PC resistance rate was significantly higher in swine than in cattle (P<0.01) and chickens (P<0.01). The resistance rates to OTC, EM and ERFX were significantly higher in swine and chickens than in cattle (P<0.05). Methicillin-resistant S. aureus (MRSA) was recovered from milk derived from a cow with mastitis in 2003; sequence type 8, SCCmec type IV and spa type t024. In the six ERFX-resistant strains isolated after 2003, amino acid substitutions in ParC with/without GyrA were detected. As the prevalence of MRSA and FQ-resistant S. aureus in the animals should be noticed, continuous monitoring is necessary to control resistance to clinically important antimicrobials in S. aureus from food-producing animals.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 52%

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Prevalence and Mechanism of Antimicrobial Resistance in Staphylococcus aureus Isolates from Diseased Cattle, Swine and Chickens in Japan

Baba

Ishihara

Ozawa

et al. 2012

The Journal of Veterinary Medical Science

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“…The rate of resistance to ceftiofur were (9.6%) E. coli, (48.2%) K. pneumoniae, (30.1%) P. mirabilis and (23.8%) S. suis isolates in this study, respectively. These findings are very significant difference to the previous reports which displayed high actively to ceftiofur (Marie et al, 2002;Yang et al, 2004;Morioka et al, 2005;Zhou et al, 2010: Wang et al, 2010. The high incidence of ceftiofur resistance in the K.pneumoniae, P. mirabilis and S. suis isolates tested herein was somewhat unexpected, as this drug was introduce into veterinary clinics for use in China only 2 to 3 years ago.…”

Section: Et Al 1581contrasting

confidence: 83%

Prevalence and antimicrobial susceptibility of bacterial pathogens isolates from diseased swine in southwest, China

Li¹,

Wang²,

Li³

et al. 2012

Afr. J. Microbiol. Res.

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“…Antimicrobial agents of various classes are widely used for therapeutic intervention of urinary tract infections caused by UPEC, but it is also used for prophylactic therapy. However, irrational used of antibiotics as a therapeutic agents of bacterial infections lead to the emergence of resistant bacteria (Morioka et al, 2005). Acquired resistance to antimicrobial drugs is becoming more prevalent among E. coli and other pathogens in this region.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic Identification and Phylogenetic Characterization of Uropathogenic Escherichia coli in Symptomatic Pregnant Women With Urinary Tract Infections in South-Western Nigeria

Abiodun¹,

Olufunke²,

Dunah³

et al. 2014

IJB

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The study reports the characterization of uropathogenic E. coli (UPEC) in urine samples of pregnant women with confirmed urinary tract infections (UTIs) in Ondo and Ekiti States, Nigeria.Voided mid-stream urine samples were cultured on eosin methylene blue agar plates at 37 o C and identified by conventional biochemical tests. Antibiotic susceptibility testing of isolates was by Kirby-Bauer's disc diffusion technique. Phylogenetic typing of the isolates was by multiplex polymerase chain reaction (PCR).The occurrence of UPEC in pregnant women in age group 25-35 years (66.0%) was high. Two hundred and sixty four uropathogenic E. coli comprising 133 (50.38%) in Ondo and 131 (49.62%) in Ekiti States were recovered from 400 samlpes analyzed. In all, prevalence of UTIs with positive cultures was 66.0%. Escherichia coli only was 56.5%, mixed-infection (9.5%), non-E. coli infection (12.5%) and no growth (21.5%). Resistance to antibiotics was high with diverse multiple antibiotic resistance patterns. Greater percentage of the screened representative UPEC isolates belonged to phylogenetic group D (65.0%), group A (28.0%), group B1 (6.7%) and none to group B2.Escherichia coli belonging to phylogenetic group D appears to be a predominant uropathogen in this study area. Presence of chuA gene in most of the isolates shows the significance of iron acquisition in the pathogenesis and urovirulence of UPEC.

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<i>In vitro</i> Activity of 24 Antimicrobial Agents against <i>Staphylococcus</i> and <i>Streptococcus</i> Isolated from Diseased Animals in Japan

Cited by 10 publications

References 15 publications

Prevalence and Mechanism of Antimicrobial Resistance in Staphylococcus aureus Isolates from Diseased Cattle, Swine and Chickens in Japan

Prevalence and Mechanism of Antimicrobial Resistance in Staphylococcus aureus Isolates from Diseased Cattle, Swine and Chickens in Japan

Prevalence and antimicrobial susceptibility of bacterial pathogens isolates from diseased swine in southwest, China

Phenotypic Identification and Phylogenetic Characterization of Uropathogenic Escherichia coli in Symptomatic Pregnant Women With Urinary Tract Infections in South-Western Nigeria

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