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Evaluation of safety and immunogenicity of a new octavalent inactivated vaccine containing porcine parvovirus, erysipelas, and leptospira
2017
Kim, K., Kangwon National University, Chuncheon, Republic of Korea | Choi, J.Y., Kangwon National University, Chuncheon, Republic of Korea | Park, S.J., Zoetis Korea, Seoul, Republic of Korea | Hahn, T.W., Kangwon National University, Chuncheon, Republic of Korea
Porcine parvovirus, Erysipelothrix (E.) rhusiopathiae, and Leptospira (L.) interrogans are considered major etiologic agents of reproductive failure in pigs, causing economic loss in the swine industry. In this study, the safety and immunogenicity of a new octavalent inactivated vaccine were evaluated. The vaccine contained inactivated porcine parvovirus, E. rhusiopathiae, and six L. interrogans serovars (Bratislava, Canicola, Grippotyphosa, Hardjo, Icterohaemorrhagiae, and Pomona). Safety test results showed no notable side effects or clinical signs after vaccination in mice, guinea pigs, and sows. In addition, we assessed immunogenicity of the vaccine in 25 sows under field conditions. The vaccinated group (n = 20) had a significantly higher antibody level than the non-vaccinated group (n = 5). Moreover, the stillbirth rate decreased in piglets born from vaccinated sows, resulting in an increased fertility rate. The results of this study demonstrate that the new octavalent inactivated vaccine can be applied safely and effectively to improve reproductive performance in sows.
Показать больше [+] Меньше [-]Serotype and antimicrobial susceptibility of Actinobacillus pleuropneumoniae isolates from pigs in Korea
2012
Jung, J.Y., Animal, Plant and Fisheries Quarantine and Inspection Agency, Anyang, Republic of Korea | Jang, H., Komipharm International, Siheung, Republic of Korea
Actinobacillus (A.) pleuropneumoniae is the causative agent of pleuropneumonia which is one of the most important respiratory diseases in pigs worldwide. A total of 32 A. pleuropneumoniae isolates from diseased pigs during 2008 to 2010 were serotyped by polymerase chain reaction method. The susceptibility of the isolates to 13 antimicrobial agents were determined by disk diffusion test. In all the 32 isolates examined in this study, serotype 5 (16 isolates: 50%), 1 (7 isolates: 21.9%), 2 (5 isolates: 15.6%) and 12 (1 isolate: 3.1%) were found. Of all tested antimicrobial agents, resistance to oxytetracycline was found in 96.9% of isolates, followed by resistance to amikacin (81.2%), neomycin (68.7%), kanamycin (53.1%), penicillin (50.0%), gentamicin (43.7%), florfenicol (25.0%), ampicillin (18.7%), colistin (9.4%), trimethoprim/sulfamethoxazole, ceftiofur (8.3%), amoxicillin/clavulanic acid (3.1%) and enrofloxacin (0%). Oxytetracycline or florfenicol-resistant isolates were examined for the presence of resistance gene. Among the 31 oxytetracycline-resistant isolates, tetB, tetH and tetO genes were detected in 22 (71%), 8 (26%) and 1 (3%) isolates, respectively. The floR genes were detected in 8 (100%) of the 8 florfenicol-resistant A. pleuropneumoniae isolates.
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2007
Jung, J.Y. (Cheju National University, Jeju, Republic of Korea) | Kim, K.S. (Cheju National University, Jeju, Republic of Korea) | Kim, D.Y. (Seoul National University, Seoul, Republic of Korea) | Kim, J.H. (Cheju National University, Jeju, Republic of Korea), E-mail: kimjhoon@cheju.ac.kr
Pneumocystis (P.) carinii is an opportunistic fungal pathogen of many animal species and human, which can cause fatal pneumonia in immunocompromised individuals. Three 100-day-old pigs with progressive atrophy, anorexia and respiratory distress were submitted to the Cheju National University for diagnosis. Grossly, the lungs were enlarged with rubbery consistency. Histopathologically, the lungs were characterized by diffuse interstitial pneumonia with thickening of alveolar septa due to infiltration of macrophages and lymphocytes.
Показать больше [+] Меньше [-]An Anatomical Study on the Aortic Sinus in Swine
2006
Choi, S.H. (Kangwon National University, Chuncheon, Republic of Korea) | Cheong, K.S. (Kangwon National University, Chuncheon, Republic of Korea) | Kim, I.S. (Chonbuk National University, Jeonju, Republic of Korea) | Tae, H.J. (Chonbuk National University, Jeonju, Republic of Korea) | Park, Y.J. (Chonbuk National University, Jeonju, Republic of Korea) | Sim, J.H. (Kangwon National University, Chuncheon, Republic of Korea) | Ahn, D.C. (Kangwon National University, Chuncheon, Republic of Korea), E-mail: ahndc@kangwon.ac.kr
This study was aimed to obtain the anatomical information on the location of ostia of left and right coronary artery in 3 weeks old and 6 months old hybrid swine. The each intercommissural distance of 6 months group was twice than 3 weeks old group. The largest sinus was right aortic sinus followed by left and posterior sinus. All left coronary artery ostia in left aortic sinus were located near the right aortic sinus as well as lower than the ostia of right one.
Показать больше [+] Меньше [-]Cutaneous melanocytic tumor in a slaughtered pig
2006
Yang, H.S. (Cheju National University, Jeju, Republic of Korea) | Kang, S.C. (Cheju National University, Jeju, Republic of Korea) | Bae, J.H. (Cheju National University, Jeju, Republic of Korea) | Kim, J.H. (Cheju National University, Jeju, Republic of Korea), E-mail: kimjhoon@cheju.ac.kr
A 7-month-old brown pig with a discoid and pedunculate mass measuring 14.0×12.5×2.5 cm on the skin of the right shoulder was noted at the slaughter house in Jeju. The surface of mass approximately 7×4 cm was interfaced with skin. The color of mass with firm consistency was mainly black and partially white on cut surface. Histopathologically, numerous unencapsulated endocrine-like cellular nodules of epithelioid cell type with abundant intracytoplasmic black pigment, melanin, were occupied in dermis and subcutis.
Показать больше [+] Меньше [-]Incidence of micronuclei in lymphocytes of pig in the high background radiation area (Cheongwon-gun and Boeun-gun)
2005
Lee, H.J. (Chonnam National University, Gwangju, Republic of Korea) | Kang, C.M. (Korea Institute of Radiological and Medical Science, Seoul, Republic of Korea) | Kim, I.H. (Chungbuk National University, Cheongju, Republic of Korea) | Kim, T.H. (Kyungpook National University, Daegu, Republic of Korea) | Ryu, S.Y. (Chungnam National University, Daejeon, Republic of Korea) | Jo, S.K. (Korea Atomic Energy Research Institute, Daejeon, Republic of Korea) | Kim, S.R. (Chonnam National University, Gwangju, Republic of Korea) | Lee, J.H. (Chonnam National University, Gwangju, Republic of Korea) | Kim, J.S. (Chonnam National University, Gwangju, Republic of Korea) | Kim, J.C. (Chonnam National University, Gwangju, Republic of Korea) | Kim, S.H. (Chonnam National University, Gwangju, Republic of Korea), E-mail: shokim@chonnam.ac.kr | Choi, S.Y. (Korea Institute of Radiological and Medical Science, Seoul, Republic of Korea)
Cytogenetic and hematological analysis was performed in peripheral blood obtained from pigs bred in the high background radiation areas (HBRA) (Cheongwon-gun and Boeun-gun) and a control area. The frequencies of gamma-ray induced micronuclei (MN) in the cytokinesis-blocked (CB) lymphocytes at several doses were measured in three pigs. An estimated dose of radiation was calculated by a best fitting linear-quadratic model based on the radiation-induced MN formation from the swine lymphocytes exposed in vitro to radiation over the range from 0 mGy to 1,969 mGy.
Показать больше [+] Меньше [-]Detection of porcine encephalomyocarditis virus by in situ hybridization
1999
Oh, S.H. | Park, N.Y. | Chung, C.Y. | Cho, K.O. | Lee, B.J. | Park, Y.S. | Park, H.S. (Chonnam National University, Kwangju (Korea Republic). College of Veterinary Medicine)
The purpose of this study was to establish a rapid, reliable diagnostic method detecting Encephalomyocarditis virus(EMCV) RNA in formalin-fixed, paraffin-embedded tissues of EMCV naturally infected pigs by cDNA probe of EMC K3, the EMCV strain isolated from Korea. Using a biotin-labelled nick translated probe for the cDNA marker. We made up for some defects of radiolabeled method. In situ hybridization(ISH) technique, differently from theother nucleic acid hybridization methods, is able to detect the virus genome specifically in the state of the intact shapes of cells and/or tissues. We succeeded in performing the experiment to detect the EMCV within 1~2 hours usign the MicroProbeTM capaillary action system. In this study, we ovserved highly specific positive sighals of red color by staining the paraffinembedded tissue sections of naturally EMCV-infected pig organs or tissues, including brain, heart, kidney and lacrimal gland with the Fast Red TR salt/Naphtol phosphate chromogen. The results suggested that this ISH method is considered as a highly sensitive and reliable tool for molecular biologic diagnosis of the EMC viral disease.
Показать больше [+] Меньше [-]Current situation of porcine reproductive and respiratory syndrome in Korea
1999
Han, K.S. | Lyoo, K.S. | Park, B.K. (Seoul National University, Suwon (Korea Republic). Department of Veterinary Medicine, College of Veterinary Medicine)
The 2,078 blood samples from 148 swine farms were collected and tested by IFA for porcine reproductive and respiratory syndrome(PRRS) virus antibody to know what type of PRRS prevails by the area. Clnically reproductive form of PRRS occurred in swine farms of 3/27, 3/87, and 2/34 in estern, central and western areas, but the seroprevalence of those areas ws different as 6.5%, 23.3%, and 17.6%, respectively. However, respiratory form of PRRS occurred more frequently, and the number of farms manifested with the respiratory form of PRRS in the eastern, central and western areas was 22/27, 71/87, and 30/34, respectively. The seroprevalence of that form of PRRS in the eastern, central and western areas was 52.2%m 67.1%, and 51.6%, respectively. Sybsequently mixed form of PRRS ocurred more frequently in the central area and the number of farms of eastern, central and western areas was 2/27, 13/87, and 2/34, respectively. The PRRS seroprevalence of the eastern, central and western areas was 58.6%, 54.0%, and 19.2%, respectively. Collectively the PRRS seroprevalence of eastern, central and western areas was 43.8%, 59.3%, and 38.2%, respectively. Overall seroprevalence of PRRS in Korea was 51.8%. In conclusion, the reproductive or the respiratory form of PRRS has been still in trouble inthe Korean swine industry and PRRS control measures have to be taken in consideration.
Показать больше [+] Меньше [-]Regulation of thyroxine release in the thyroid by protein kinase C
1999
Kim, J.S. (Chonbuk National University, Chonju (Korea Republic). College of Veterinary Medicine)
Previous studies suggested that the inhibition of thyroxine (T4) release by alpha1-adrenoceptor and muscarinic receptor stimulation results in activated protein kinase C (PKC) from mouse and guinea pig thyroids. In the present study, the effect of carbachol, methoxamine, phorbol myristate acetate (PMA), and R59022 on the release of T4 from the mouse, rat, and guinea pig thyroids was compared to clarify the role of PKC in the regulation of the release of T4. The thyroids were incubated in the medium containing the test agents, samples of the medium were assayed for T4 by EIA kits. Forskolin, an adenylate cyclase activator, chlorophenylthio-cAMP sodium, a membrane permeable analoge of cAMP, and isobutyl-methylxanthine, a phospho-diesterase inhibitor, like TSH (thyroid stimulating hormone), enhaced the release of T4 from the mouse, rat, and guinea pig thyroids. Methoxamine, an alpha1-adrenoceptor agonist, inhibited the TSH-stimulated release of T4 in mouse, but not rat and guinea pig thyroids. In contrast, carbachol, a muscarinic receptor agonist, inhibited the release of T4 in guinea pig, but not mouse and rat thyroids. These inhibition were reversed by prazosin, an alpha1-adrenoceptor antagonist or atropine, a muscarinic antagonist or M1- and M3- muscarinic antagonists, in mouse or guinea pig thyroids. In addition, staurosporine, a PKC inhibitor, reversed methoxamine or carbachol inhibition of TSH stimulation. Furthermore, PMA, a PKC activator, and R59022, a diacylglycerol (DAG) kinase inhibitor, inhibited the TSH-stimulated release of T4 in mouse, rat, and guinea pig thyroids. These inhibition were blocked by staurosporine. these findings suggest that the activation of receptor or DAG inhibits TSH-stimulated T4 release through a PKC-dependent mechanism in thyroid gland.
Показать больше [+] Меньше [-]Effects ofmuscarinic receptor stimulation on the thyrotropin-induced thyroxine release inthe guinea pig thyroid
1999
Kim, H.H. | Kim, J.S. (Chonbuk National University, Chonju (Korea Republic). College of Vetrinary Medicine)
The present experiments were performed to examine the effects of acetylcholine (ACh) and carbachol (CC) on thyroxine (T4) release and any possible relation between inhibition of T4 relese and sighaling pathway in guinea pig thyroids. The thyroids were incubated in the medium containing the test agents, samples of the medium wer assayed for T4 by EIA kits. ACh and CC inhibited the TSH-stimulated T4 release. These inhibition were reversed by atropine, but not by d-tubocurarine. The ingibitory effects of ACh on T4 release were prevented by M1- and M3-muscarinic antagonists and its inhibition was also slightly reversed by M2- and M4- muscarinic antagonists. R59022, like ACh and CC, also inhibited the TSH-stimulated T4 release. This inhibition was reversed by protein kinase C inhibitor and Ca2+ channel blocker. The present study suggests that cholinergic inhibition of T4 release from thyroids can be induced mainly by ctivation of the M1- or M3-receptors and that it is mediated throught the muscarinic receptor-stimulated protein kinase C activation
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