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Epidemiological studies based on multi-locus sequence typing genotype of methicillin susceptible Staphylococcus aureus isolated from camel's milk
2017
Ali, Alsagher O.(South Valley University Animal Medicine Department Division of infectious Diseases) | Mahmoud, Hassan Y.A.H.(South Valley University Animal Medicine Department Division of infectious Diseases)
One hundred milk samples were collected from camel's milk for the isolation of Staphylococcus aureus. Thirty-one isolates were S. aureus, 45 were other forms of staphylococci and 24 represented other bacteria. Five isolates from S. aureus were methicillin resistant S. aureus (MRSA) and 26 samples were methicillin susceptible S. aureus (MSSA). The whole genome sequence of S. aureus was annotated and visualised by rapid annotation using subsystem technology (RAST) which is a fully-automated service for annotating complete or nearly complete bacterial genomes. Four isolates from MSSA strains were subjected to multi-locus sequence typing (MLST). Three multi-locus sequences types or sequence types (MLST/ST) were found, namely ST15, ST1153 and ST130. The phylogenetic analysis of the concatenated sequences of the seven genes forming the MLST profile of S. aureus classification revealed a high degree of similarity and close relationship between the ST15 and ST1153 while the third ST (ST130) was located in a different cluster.
Afficher plus [+] Moins [-]A retrospective study of anthrax on the Ghaap Plateau, Northern Cape province of South Africa, with special reference to the 2007-2008 outbreaks
2017
Hassim, Ayesha(University of Pretoria Department of Veterinary Tropical Diseases) | Dekker, Edgar H.(South Africa Department of Agriculture, Forestry and Fisheries) | Byaruhanga, Charles(University of Pretoria Department of Veterinary Tropical Diseases) | Reardon, Tommy(South Africa Department of Agriculture, Forestry and Fisheries) | van Heerden, Henriette(University of Pretoria Department of Veterinary Tropical Diseases)
Anthrax is a zoonotic disease caused by the gram-positive, endospore-forming and soil-borne bacterium Bacillus anthracis. When in spore form, the organism can survive in dormancy in the environment for decades. It is a controlled disease of livestock and wild ungulates in South Africa. In South Africa, the two enzootic regions are the Kruger National Park and the Ghaap Plateau in the Northern Cape province. Farms on the Plateau span thousands of hectares comprising of wildlife - livestock mixed use farming. In 2007-2008, anthrax outbreaks in the province led to government officials intervening to aid farmers with control measures aimed at preventing further losses. Because of the ability of the organism to persist in the environment for prolonged periods, an environmental risk or isolation survey was carried out in 2012 to determine the efficacy of control measures employed during the 2007-2008, anthrax outbreaks. No B. anthracis could be isolated from the old carcass sites, even when bone fragments from the carcasses were still clearly evident. This is an indication that the control measures and protocols were apparently successful in stemming the continuity of spore deposits at previously positive carcass sites.
Afficher plus [+] Moins [-]Construction of a live attenuated Salmonella strain expressing FanC protein to prevent bovine enterotoxigenic Escherichia coli and evaluation of its immunogenicity in mice
2017
Won, G., Chonbuk National University, Iksan, Republic of Korea | Kim, H.J., Chonbuk National University, Iksan, Republic of Korea | Lee, J.H., Chonbuk National University, Iksan, Republic of Korea
To construct a novel vaccine candidate against bovine enterotoxigenic Escherichia coli (ETEC), FanC, the major subunit of K99 fimbriae adhesion, was inserted into secretion plasmid pYA3560 containing a β-lactamase secretion system. This was then transformed into Δasd Δcrp Salmonella (S.) Typhimurium and designated as JOL950. Secretion of recombinant fanC fimbrial antigens was confirmed by immunoblot analysis. Groups of mice were inoculated with single or double doses of JOL950. Another group was used as a negative control. Compared to control mice, all immunized mice had significantly higher levels (p less than 0.05) of serum immunoglobulin (Ig)G, and secretory IgA against FanC. The IgG2a and IgG1 titer assays revealed that immunization highly induced IgG2a compared to that of IgG1, indicating that T helper-1- related cell-mediated immune responses may be elicited by JOL950. The results show that both systemic and mucosal immunities against selected fimbrial antigens of bovine ETEC expressed by a live attenuated S. Typhimurium strain are prominently produced in mice immunized with JOL950 via an oral route.
Afficher plus [+] Moins [-]Improvement of indirect enzyme-linked immunosorbent assay for detection of Japanese encephalitis virus antibodies in swine sera
2017
Yang, D.K., Viral Disease Division,Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea | Kim, H.H., Viral Disease Division,Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea | Jo, H.Y., Viral Disease Division,Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea | Lee, S.H., Viral Disease Division,Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea | Jang, S.H., R and D Center, MEDIAN Diagnostics, Chuncheon, Republic of Korea | Lee, S.O., R and D Center, MEDIAN Diagnostics, Chuncheon, Republic of Korea | Choi, S.S., Viral Disease Division,Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea | Cho, I.S., Viral Disease Division,Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea
Japanese encephalitis (JE) is an important zoonosis caused by the mosquito-transmitted JE virus (JEV), which is a causative agent of reproductive failure in pregnant sows. Detection of JEV antibodies in swine is performed by hemagglutination inhibition (HI), virus neutralization (VN), and the plaque reduction neutralization test (PRNT). The most stringent PRNT is the 90% endpoint PRNT (PRNT∧90). These conventional assays are difficult to carry out in diagnostic laboratories with insufficient instruments or cell culture systems. An alternative assay that is easily conducted and time efficient is required. In this study, we improved the indirect enzyme-linked immunosorbent assay (I-ELISA) with clarified antigen for the detection of JEV antibodies. The I-ELISA results obtained from 175 swine serum samples were compared with HI, VN, and PRNT∧90 results. The sensitivity of I-ELISA was 91.8%, 95.0%, and 94.7% compared with HI, VN, and PRNT∧90 results, respectively. The specificity of I-ELISA was 92.2%, 94.7%, and 94.7% compared with HI, VN, and PRNT∧90 results, respectively. Moreover, the I-ELISA results were significantly correlated with the HI (r = 0.93), VN (r = 0.95), and PRN∧T90 (r = 0.92) results. These results suggest that the improved I-ELISA is useful for serosurveillance of JEV in swine.
Afficher plus [+] Moins [-]Dehydroepiandrosterone and cortisol concentrations in the cerebrospinal fluid of dogs
2017
Mongillo, P., University of Padova, Legnaro, Italy | Bernardini, M., University of Padova, Legnaro, Italy | Prana, E., University of Padova, Legnaro, Italy | Balducci, F., Portoni Rossi Veterinary Hospital, Zola Predosa, Italy | Gabai, G., University of Padova, Legnaro, Italy | Marinelli, L., University of Padova, Legnaro, Italy
Concentrations of cortisol, dehydroepiandrosterone and dehydroepiandrosterone-sulfate were measured by performing radioimmunoassay of the cerebrospinal fluid of 68 dogs diagnosed with idiopathic epilepsy or inflammatory, degenerative, or non-neurological disease. No steroid concentration differences were found among diagnoses. Dehydroepiandrosterone and dehydroepiandrosterone-sulfate concentrations were higher in males than in females and dehydroepiandrosterone-sulfate decreased with increasing age. No sex or age effects were observed on cortisol or hormone ratios. Although limited to a relatively small sample, our results show sex- and age-dependent variations in these neurosteroid concentrations in cerebrospinal fluid. The role of such variations in the pathophysiology of the dog brain warrants further investigation.
Afficher plus [+] Moins [-]Prolonged reflex bradycardia after occlusion of patent ductus arteriosus with an Amplatz canine duct occluder in a dog
2017
Ro, W.B., Konkuk University, Seoul, Republic of Korea | Kang, M.H., Konkuk University, Seoul, Republic of Korea | Lee, C.M., Konkuk University, Seoul, Republic of Korea | Kim, S.G., Konkuk University, Seoul, Republic of Korea | Park, H.M., Konkuk University, Seoul, Republic of Korea
A 9-month-old intact male Maltese dog (1.52 kg) was diagnosed with a patent ductus arteriosus (PDA). Transcatheter occlusion of the PDA was performed by using the Amplatz canine duct occluder (ACDO). After occlusion, reflex bradycardia occurred and lasted for at least 15 h with normal systolic arterial pressure and slightly increased diastolic arterial pressure. The bradycardia slowly resolved, and the heart rate was normal in re-examinations after 7 and 30 days. This is the first case of reflex bradycardia after ACDO implantation, in which the bradycardia continued for a long time, even after recovery from anesthesia.
Afficher plus [+] Moins [-]Pulmonic stenosis with atrial septal defect in a Siamese cat
2017
Kim, J.Y., Seohyun Animal Hospital, Kwangju, Republic of Korea | Lee, S.W., YulimAnimal Hospital, Kwangju, Republic of Korea | Lee, S.G., Seoul Animal Heart Hospital, Seoul, Republic of Korea | Suh, S.I., Kangwon National University, Chuncheon, Republic of Korea | Hyun, C., Kangwon National University, Chuncheon, Republic of Korea
A 6-month-old mature intact female Siamese cat presented with exertional dyspnea. Diagnostic studies revealed pleural effusion, grade 4/6 left basal systolic murmur, deep S-wave in electrocardiograph leads I, II, and III, cardiomegaly with pleural effusion on radiography, pulmonic systolic (~5.8 m/sec) and tricuspid (3.6 m/sec) regurgitant jets, atrial septal defect, and a hypoplastic right outflow tract. Based on these results, the case was diagnosed as pulmonic stenosis with atrial septal defect. To the best of our knowledge, this is the first case report describing pulmonic stenosis with atrial septal defect in a cat in Korea.
Afficher plus [+] Moins [-]Review of regulatory management on standards and specifications for veterinary medical devices in Korea
2017
Kang, K.M., Animal and Quarantine Agency, Gimcheon, Republic of Korea | Kim, T.W., Korea Testing Certification, Gunpo, Republic of Korea | Kwon, O.R., Korea Testing Certification, Gunpo, Republic of Korea | Park, H.J., Animal and Quarantine Agency, Gimcheon, Republic of Korea | Cho, S.M., Animal and Quarantine Agency, Gimcheon, Republic of Korea | Kim, C.H., Animal and Quarantine Agency, Gimcheon, Republic of Korea | Lee, M.H., Animal and Quarantine Agency, Gimcheon, Republic of Korea | Moon, J.S., Animal and Quarantine Agency, Gimcheon, Republic of Korea
Well-established standards and specifications for medical devices not only provide clarity and consistency in licensing processes but also secure device safety and effectiveness. This study reviewed regulatory standards and specifications for veterinary medical devices in Korea based on data obtained through analyses of those medical devices. General standards for electromechanical, electromagnetic, and biological safety and individual standards for 76 electric and 70 general medical device products have been established by the Korean Ministry of Food and Drug Safety. However, the first standards and specifications for veterinary medical devices were established in March 2000 for two products (disposable needle and syringe). Similar to the large number of standards for medical devices, there have been general standards for safety and individual standards for 72 veterinary medical devices (27 electric medical devices, 12 non-electric medical devices, 10 medical supplies, and 23 other types) established since 2014. These new standards considered, among other aspects, the devices' applications, usage characteristics, and industrial environment. To date, the establishment of standards and specifications for veterinary medical devices remains limited. This study suggests that improvements should be made to the regulation of general and individual standards associated with various veterinary medical instruments, supplies, and in vitro diagnostic medical reagents.
Afficher plus [+] Moins [-]Solanum lycopersicum (tomato) ethanol extract elicits anti-inflammatory effects via the nuclear factor kappa B pathway and rescues mice from septic shock
2017
Saba, E., Kyungpook National University, Daegu, Republic of Korea | Oh, M.J., Kyungpook National University, Daegu, Republic of Korea | Kwak, D., Kyungpook National University, Daegu, Republic of Korea | Roh, S.S., Daegu Hanny University, Gyeongsan, Republic of Korea | Kwon, H.W., Kyungpook National University, Daegu, Republic of Korea | Kim, S.D., Kyungpook National University, Daegu, Republic of Korea | Rhee, M.H., Kyungpook National University, Daegu, Republic of Korea
Solanum lycopersicum, commonly known as tomato, is widely used in raw, cooked, or liquid forms because it contains nutritional compounds that are beneficial for human health, including carotenoids, lycopene, ascorbic acid, vitamins, and minerals. The tomato is perhaps the most widely studied fruit, especially with respect to its cardioprotective effects. In this study, we aimed to identify the anti-inflammatory mechanisms by which the tomato elicits its antiinflammatory properties. We treated murine macrophage RAW 264.7 cells with a tomato ethanol extract and performed various biochemical assays including nitric oxide inhibition, cell viability, RNA extraction, expression of proinflammatory mediators and cytokines, and immunoblotting, as well we assessed cell survival rates. Our results have shown for the first time that a tomato ethanol extract treatment can suppress nitric oxide production in a dose-dependent manner without cytotoxicity. Moreover, it inhibits the expression of pro-inflammatory mediators and cytokines and elicits its anti-inflammatory effects via the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and mitogen-activated protein kinase (MAPK) pathways. In addition, administration of tomato syrup potently rescued mice from septic shock induced by lipopolysaccharide injection. Collectively, our results elucidate details regarding the antiinflammatory mechanisms of tomato.
Afficher plus [+] Moins [-]Primary intestinal mast cell tumor in a Russian Blue cat: ultrasonographic and histopathological findings
2017
Kim, S.J., Bom animal hospital, Seoul, Republic of Korea | Jaekal, J., Bom animal hospital, Seoul, Republic of Korea | Kim, J.Y., Bom animal hospital, Seoul, Republic of Korea | Oh, D.K., Bom animal hospital, Seoul, Republic of Korea | Cho, J.H., Bom animal hospital, Seoul, Republic of Korea | Kang, M.H., Konkuk University, Seoul, Republic of Korea | Park, H.M., Konkuk University, Seoul, Republic of Korea
A 11-year-old, female Russian Blue cat was presented with anorexia, vomiting, and diarrhea lasting for 3 days. Abdominal ultrasonography revealed a hypoechoic, non-circumferential, and eccentrically formed intestinal loop with altered wall layering and thickening of the tunica muscularis. After surgical resection, histopathologic examination confirmed an infiltrative, round-cell neoplasm composed of sheets and cords of neoplastic mast cells within a fibrotic, edematous stroma. The cat was alive and healthy 6 months after surgery. To the best of our knowledge, this is the first reported case of an intestinal mast cell tumor in a Russian Blue cat in South Korea.
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