Refinar búsqueda
Resultados 1-10 de 22
Study on application of surgical therapeutic method of foot diseases and foot anesthesia technique in cattle
1999
Jeong, S.W. (Chonnam National University, Kwangju (Korea Republic). College of Veterinary Medicine) | Yun, S.J. (Kyeongchun Animal Clinic, (Korea Republic).)
Forty-five claw lamed cows with pododermatitis circumscripta, hyperplasia interdigitalis, and dermatitis verrucosa were treated surgically through resection of necrotic tissues, currettage, antibiotics application, and compressive bandage, under retrograde intravenous regional anesthesia of claw. At 7 days postoperation were showed lameness score 0, absense of swelling of extremitis, without fistulation and purulent exudate in wound. Mean duration time of action of local anesthetic drug was 75 minutes and mean operation time for treatment of pododermatitis circumscripta, hyperplasia interdigitalis, and dermatitis verrucosa was 35 minutes, 20 minutes, and 21 minutes, respectively.
Mostrar más [+] Menos [-]Pharmacodynamics of florfenicol alone and in combination with amoxicillin or cefuroxime against pathogenic bacteria of fish origin
2010
Lee, E.M., Kyungpook National University, Daegu, Republic of Korea | Choi, M.J., Kyungpook National University, Daegu, Republic of Korea | Lee, S.J., Kyungpook National University, Daegu, Republic of Korea | Park, S.C., Kyungpook National University, Daegu, Republic of Korea
Combination therapy of antibiotics is leading to improved efficacy or safety profiles with decrease emergence of bacterial resistance. Because of this benefit, many of antibacterial combinations have been used in veterinary practice for the past few decades. The purpose of this study was to examine the in vitro activity of an amoxicillin alone and in combination with other antibiotics against pathogenic bacteria of fish origin. Based on the fractional inhibitory concentration (FIC) index (FIC less-than or equal to 0.5), a synergistic interaction was shown in combination of florfenicol with amoxicillin or cefuroxime. The combination of florfenicol and amoxillin showed higher antibacterial activity than that of florfenicol and cefuroxime. Ratio of amoxicillin and florfenicol in combination was 1 : 1, which showed the antibacterial activity against bacterial isolates of fish as compared with other ratios. A synergetic effect of the combination (amoxicillin and florfenicol) was further confirmed in the time-kill curve study. The study showed a better in vitro antibacterial activity of a 1 : 1 combination of amoxicillin and florfenicol than the individual antibacterial against bacterial isolates of fish. In conclusion, the combination of florfenicol and amoxicillin may serve as a potential antibacterial therapy in fishes infected pathogenic bacteria.
Mostrar más [+] Menos [-]Antibiotic resistance pattern of avian pathogenic Escherichia coli isolated from chickens
2009
Kim, M.S., Kangwon National University, Chuncheon, Republic of Korea | Kwon, H.M., Kangwon National University, Chuncheon, Republic of Korea | Sung, H.W., Kangwon National University, Chuncheon, Republic of Korea
Avian pathogenic Escherichia coli (APEC) is an important bacterial pathogen of chickens and causes colibacillosis such as airsacculitis, perihepatitis, omphalitis, peritonitis, salpingitis and pericarditis. As the transfer of antibiotic resistance from animal to humans can be possible surveillance on antibiotic resistance of APEC is very important. A total 34 APEC isolates from diseased chickens during the period from 2007 to 2009 were obtained. The susceptibility of the isolates to 13 antibiotics was determined by disc diffusion assay. Resistance to erythromycin was found in 97.1% of APEC isolated, followed by resistance to tetracycline (85.3%), doxycycline (82.3%), ampicillin (73.5%), sulfisoxazole (67.6%), enrofloxacin (67.6%), ciprofloxacin (64.7%), norfloxacin (61.7%) trimethoprim/sulfamethoxazole (52.9%), gentamycin (26.5%), amoxicillin (8.8%), colistin (5.9%), and amikacin (2.9%). The blaTEM genes were detected in 25 (100%) of the 25 ampicillin-resistant APEC isolates. Among the 29 tetracycline-resistant APEC isolates, tetA and tetB genes were detected in 18 (62.1%) and 9 (31%) isolates, respectively. Twenty six (76.5%) isolates were multiresistant to at least 6 antibiotics and seven (20.1%) isolates were multiresistant to at least 10 antibiotics. This results indicated that multiple antibiotic-resistant APEC is widespread in chicken flocks in Korea.
Mostrar más [+] Menos [-]Distribution and characteristics of Staphylococcus aureus subtypes isolated from dairy herds
1999
Yoo, J.H. | Park, H.M. | Oh, T.H. | Sohn, D.H. | Han, H.R. (Seoul National University, Suwon (Korea Republic). Department of Veterinary Internal Medicine, College of Veterinary Medicine)
Staphylococcus aureus is one of most prevalent intramammary pathogens and have characteristics which are not easily eradicated. Recently, to understand the sources and transmission of S aureus, many studies have focused on the subtyping of field isolate. This study was preformed to investigate the distribution pattern and characteristics of the isolates using phenotyping and genotyping. Samples were collected from milk of each udder, cow bodies (perianal region, vagina, tail, udder skin, sole) and environment (floor, liner, milker's hand, water, towel, insect) from 6 herds located in Kyung-gi province. Forty five strains of S aureus were isolated from 3 dairy herds (A, B, C) and were typed by hemolytic pattern, antibiotic resistant pattern, enterotoxin typing and PCR-based DNA fingerprinting. Slime productivity was also compared by each subtype to examine potential infectiousness. Of 45 strains, 41 were isolated from milk samples and 4 were isolated from liners. No strains isolated in the bodies and environment. Forty five strains isolated were classified as 18 subtypes by phenotyping and genotyping. There was common subtype between A and B herd, but the subtype of C herd showed different pattern. Among predominant subtypes, 60% of S aureus strain isolated from A and B herd showed subtype I and 50% of S aureus strain isolated from C herd belong to subtype VI and XII. Neither somatic cell count (SCC) nor slime production was significantly different between predominant and minor subtypes. In summary, the study revealed that liners play more important roles in the mode of transmission than enmironmental sources. Several subtypes can be found in a herd, only a few subtype, however, was largely associated with the majority of infection.
Mostrar más [+] Menos [-]Characterization of antimicrobial resistance and application of RFLP for epidemiological monitoring of thermophilic Campylobacter spp. isolated from dogs and humans in Korea
2014
Cho, H.H., Animal, Plant and Fisheries Quarantine and Inspection Agency, Anyang, Republic of Korea | Kim, S.H., Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of orea | Min, W.G., Gyeongsang National University, Jinju, Republic of Korea | Ku, B.K., Animal, Plant and Fisheries Quarantine and Inspection Agency, Anyang, Republic of Korea | Kim, J.H., Division of Enteric Bacteria Infections, Center for Infectious Disease, National Institute of Health, Seoul, Republic of Korea | Kim, Y.H., Gyeongsang National University, Jinju, Republic of Korea
An antimicrobial susceptibility test was conducted to compare the resistance rates among Campylobacter spp. isolates from dogs (n = 50) raised under diverse conditions and humans (n = 50). More than 60% of Campylobacter (C.) jejuni from dogs and humans showed resistance to nalidixic acid, enrofloxacin and ciprofloxacin. C. jejuni isolates from humans showed higher resistance to tetracycline (83.3%) and ampicillin (91.3%) than those from dogs. None of the C. jejuni or Campylobacter coli isolates from humans or dogs were resistant to erythromycin. Overall, 85% of Campylobacter spp. isolates showed a multidrug resistant phenotype. Nucleotide sequencing analysis of the gryA gene showed that 100% of NA. /CIP. olates from dogs and humans had the Thr-86. h-Ile mutation, which is associated with fluoroquinolone resistance. flaA PCR restriction fragment length polymorphism (RFLP) typing to differentiate the isolates below the species level revealed 12 different clusters out of 73 strains. The human isolates belonged to eight different RFLP clusters, while five clusters contained dog and human isolates.
Mostrar más [+] Menos [-]Anti-mycoplasmal and anti-inflammatory effect of Origanum vulgare extract against Mycoplasma hyopneumoniae
2009
Choi, M.J., Kyungpook National University, Daegu, Republic of Korea | Hwang, M.H., Kyungpook National University, Daegu, Republic of Korea | Choi, J.Y., Kyungpook National University, Daegu, Republic of Korea | Lee, J.S., Kyungpook National University, Daegu, Republic of Korea | Park, S.C., Kyungpook National University, Daegu, Republic of Korea
In the present study, ten herbal extracts, Citirus unchiu Markovich, root and stem of Berberis koreana, Morus alba, Dendrobium moniliforme, Aster gramineus, A. scabar, Alisma canaliculatum, Fallopia japonica and Origamum (O.) vulgare were determined to examine anti-mycoplasmal activity. Among them, O. vulgare extract (OVE) showed strong anti-mycoplasmal activity and was analyzed by gas-chromatography/mass spectrometry (GC/MS). As the results, OVE was consisted of carvacrol (68.78%), o-cymene (9.80%), terpinene (7.61%) and thymol (4.03%) as main ingredients. To investigate inflammatory activity by intact pathogenic Mycoplasma hyoneumoniae (M. hyo) at 30 ㎍/mL, we examined induced transcription of proinflammatory cytokines such as cyclooxygenase-2, tumor necrosis factor-a, interleukin (IL)-1, IL-6 and inducible nitric oxide synthase in RAW 264.7 cells. With the above results, we further investigated whether OVE could reduce inflammation induced by M. hyo at minimal inhibitory concentration. The result showed that 32 ㎍/mL of OVE inhibited nitric oxide production by 60%. This study also evaluated the combination of OVE with antibacterials against M. hyo for application. Based on these results, it could be concluded that M. hyo induces inflammation in RAW 264.7 cells and OVE protects this inflammation, indicating that OVE may be useful for industrial animals.
Mostrar más [+] Menos [-]Clinical investigations of canine superficial pyoderma
1999
Oh, T.H. (Seoul National Universtiy, Suwon (Korea Republic). College of Veterinary Medicine)
Fifteen dogs with superficial pyoderma were investigated clinically. Dermatological signs were mainly consisted of papule (66.6%), pustule (86.6%), epidermal collrarette and patchy (40%), and hyperpigmentation (53.3%). Distribution of skin lesion were consisted of back (35.5%), abdomen (29.0%), axillary (6.4%), leg (3.2%), neck (3.6%) and foot (16.1%), respectively. In pustular cytology PMN cells and cocci were examined. Cephalexin was very effective antibiotics on superficial pyoderma at administration of 30mg/kg bid P.O.for 3 weeks. Hyperadrenocorticism and atopy were diagnosed as a primary cause on pyoderma in 2 dogs.
Mostrar más [+] Menos [-]Efficacy of rifampin and streptomycin in Sprague-Dawley rats infected with Brucella abortus
Baek, B.K.;Choi, C.K.;Lim, C.W.;Lee, J.H.(Chonbuk National University, Jeonju, Republic of Korea)E-mail:baekbk@chonbuk.ac.kr | Kim, B.S.(Sohae College, Kunsan, Republic of Korea) | Lee, S.I.(Toyama Medical and Pharmaceutical University, Toyama, Japan) | Hur, J.;Kakoma, Ibulaimu(University of Illinois, Urbana IL., USA)
This study was carried out to investigate the efficacy of rifampin with or without streptomycin in male Sprague-Dawley (SD) rats experimentally inoculated with Brucella abortus. Thirty rats were intraperitoneally inoculated with 1.0×10∨9 colony-forming units of B. abortus. They were divided into 3 groups by treatment with antibiotic. 10 rats in Group A were orally administrated with rifampin, 10 rats in Group B with rifampin orally and with streptomycin intramuscularly over 12 weeks starting at 1 week post infection (PI).
Mostrar más [+] Menos [-]Biotype, serotype and antibiotics susceptibility of Yersinia enterocolitica isolated from zoo animals
1994
Park, S.G. | Youn, E.S. | Kim, E.J. (Seoul Metropolitan Government Institute of Health and Environment, Seoul (Korea Republic))
Studies on Pasteurella multocida isolated from pneumonic lungs of slaughter pigs
1994
Ahn, B.C. | Kim, B.H. (Kyungpook National University, Taegu (Korea Republic). College of Veterinary Medicine) | Cho, K.H. (Kyungpook Animal Health Experiment Institute, Taegu (Korea Republic))