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Antimicrobial resistance of Staphylococcus aureus isolated from domestic and imported raw meat in Korea
2008
Heo, H.J. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Ku, B.K. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Bae, D.H. (Kyungpook National University, Daegu, Republic of Korea) | Park, C.K. (Kyungpook National University, Daegu, Republic of Korea) | Lee, Y.J. (Kyungpook National University, Daegu, Republic of Korea), E-mail: youngju@knu.ac.kr
The rapid evolution of antibiotic resistance in Staphylococcus (S.) aureus is of considerable concern. Methicillin-resistant S. aureus (MRSA) strains are especially one of the greatest public concerns since the treatment of infections is more difficult when encountering resistance. In this study, we conducted a nationwide survey on the antimicrobial resistance of S. aureus isolated from raw meat samples collected from 16 countries, including Korea, and investigated the prevalence of MRSA as a possible source of human infection. Of 1,984 meat samples, S. aureus was isolated from 218 (11.0%) samples consisting of 23 (12.1%) from domestic meat and 195 (10.9%) from imported meat. The isolated rates of poultry meat, pork and beef were 12.8%, 7.0% and 10.0%, respectively. With regard to imported meat, the incidence varied from 4.8% to 16.6% from 13 countries, with the exception of Austria and Poland. In a resistance test to 20 antimicrobial agents, one hundred and eighty-four isolates (84.4%) were resistant to one or more antimicrobial agents tested. Especially, 17 (7.8%), 124 (56.9%) and 28 (12.8%) isolates showed a resistance to 3, 2 and 1 drugs, respectively. One isolate originating from domestic beef was resistant to 7 drugs. Another isolate originating from imported poultry meat showed resistance to oxacillin and methicillin by the disk diffusion test and minimal inhibition concentration method, but showed negative for detection of the mecA gene.
Показать больше [+] Меньше [-]Aspiration pneumonia due to grain particle in a tammar wallaby (Macropus eugenii) with Staphylococcus aureus pneumonia
2006
Cho, H.S. (Chonnam National University, Gwangju, Republic of Korea) | Park, N.Y. (Chonnam National University, Gwangju, Republic of Korea), E-mail: nypark@chonnam.ac.kr
A 12-year-old female Tammar Wallaby (Macropus eugenii) died after a 6-day history of depression, anorexia, and coughing. The necropsy revealed pustules of varying sizes on the lung surface from which a pure culture of Staphylococcus aureus was ioslated. Histopathologically, the pulmonary nodules formed typical granulomatous inflammation. The center of the granulomatous foci consisted of a necrotic center and grain particles with gram positive cocci that were surrounded by eosinophilic club-like bodies containing Splendore-Hoeppli material.
Показать больше [+] Меньше [-]Therapeutic effect of oregano essential oil on subclinical bovine mastitis caused by Staphylococcus aureus and Escherichia coli
2015
Cho, B.W., Department of Animal Science, College of Life Sciences, Pusan National University, Miryang, Republic of Korea | Cha, C.N., Engineering Research Institute and Department of Industrial Systems Engineering, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea | Lee, S.M., Department of Environmental Health, Graduate School of Public Health, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea | Kim, M.J., Department of Environmental Health, Graduate School of Public Health, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea | Park, J.Y., Department of Environmental Health, Graduate School of Public Health, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea | Yoo, C.Y., Department of Computer Information, Gyeongnam Provincial Namhae College, Namhae, Republic of Korea | Son, S.E., Research Institute of Life Sciences, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea | Kim, S., Research Institute of Life Sciences, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea | Lee, H.J., Department of Environmental Health, Graduate School of Public Health, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
Oregano (Origanum vulgare) is an aromatic herb belonging to the Lamiaceae family. This study evaluated the therapeutic effect of oregano essential oil (OEO) on clinical bovine mastitis caused by Staphylococcus (S.) aureus and / or Escherichia (E.) coli. Thirty - two quarters from 18 lactating cows with subclinical mastitis were selected from a dairy farm and were divided into 4 groups (8 quarters / group): negative control (CON), positive control (GEN) and two OEO-treated groups (OEO-1 and OEO-2). Each group was intramammarily treated with saline, 10 g/tube of gentamicin ointment, and single and double doses of 0.9 mL OEO ointment twice a day for three days, respectively. After the treatments, physical udder conditions were greatly improved in GEN and OEO groups. In CON group, somatic cell counts (SCCs), number of white blood cells (WBC) and bacteria were increased. However, in OEO groups, SCCs and number of WBC were significantly decreased and S. aureus and E. coli were not detected in milk as compared with those before the treatments as well as GEN group. These results suggest that OEO may be a useful alternative to antibiotics for the control of subclinical bovine mastitis caused by S. aureus and/or E. coli.
Показать больше [+] Меньше [-]The effect of liposomal cephalexin on the dry period treatment of bovine Staphylococcus aureus mastitis
1992
Shin, J.H. | Han, H.R. (Seoul Nat'l Univ., Suwon (Korea Republic). Coll. of Veterinary Medicine)