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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.
Mostrar más [+] Menos [-]Screening of Active Substance FS11052 as an Inhibitor of Neurotransmitter Release From PC12 Cells
2006
Lee, Y.S. (Wonkwang University, Iksan, Republic of Korea) | Lee, J.H. (Chonbuk National University, Jeonju, Republic of Korea), E-mail: johnhlee@chonbuk.ac.kr
We established an in vitro experimental system using the following procedure. We first introduced tritium-labeled norepinephrine ([³H]-NE) into PC12 cells. The [³H]-NE incorporated into PC12 cells were then stimulated by a high concentration (60 mM) of K+ buffer during 12 minutes. Then, we collected 100 μl supernatant and counted the amount of [³H]-NE release from PC12 cells with a scintillation counter. After screening fungal, Streptomyces spp. or bacterial product using this experimental sytem, we obtained FS11052 from Streptomyces spp. which inhibited [³H]-NE release from PC12 cells.
Mostrar más [+] Menos [-]The Roles of PKC-δ on the Regulation of Insulin-Like Growth Factor (IGF)-I and Insulin-Like Growth Factor Binding Protein-3 Secretion by All-Trans Retinoic Acid in MCF-7 Cell
2006
Lee, S.M. (Chonbuk National University, Jeonju, Republic of Korea) | Kim, S.H. (Chonbuk National University, Jeonju, Republic of Korea) | Choi, K.S. (Woosuk University, Wanju, Republic of Korea) | Kang, C.W. (Chonbuk National University, Jeonju, Republic of Korea), E-mail: cwkang@chonbuk.ac.kr
All-trans retinoic acid (AtRA) induces growth inhibition and apoptosis in a variety of tumer cells, including MCF-7 cells. Insulin-like growth factors (IGFs) system has been reported to be associated with the development of cancer. Although MCF-7 cell with AtRA is to be the major stimulus for the cell growth and apoptosis, the mechanism of insulin-like growth factor-I (IGF-I)/insulin-like growth factor binding protein-3 (IGFBP-3) system remains to be elucidated. Thus, this study was conducted to the effect of AtRA on the gene expression and level of IGF-I and IGFBP-3.
Mostrar más [+] Menos [-]Evaluation of the Extract From Lymph Nodes for Salmonella Monitoring in Pig Herds
2006
Jung, B.Y. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea), E-mail: jungby@nvrqs.go.kr | Choo, J.H. (Kyungpook National University, Daegu, Republic of Korea) | Kim, J.H. (Kyungpook National University, Daegu, Republic of Korea) | Jung, J.Y. (Kyungpook National University, Daegu, Republic of Korea)
The objective of this study was to investigate the use of extract from mesenteric lymph nodes as an alternative to serum for ELISA to detect Salmonella antibodies in slaughter pigs. Among 324 slaughter pigs, 65 (20.1%) were positive in the serum ELISA and 76 (23.5%) were positive in the ELISA with extract from lymph nodes. A total of 24 (7.4%) Salmonella representing 6 serotypes were isolated from mesenteric lymph nodes and 35 (10.8%) Salmonella belonging to 2 serotypes were also recovered from cecal contents of slaughter pig samples, respectively.
Mostrar más [+] Menos [-]Increased osteopontin expression in activated glial cells in experimental autoimmune encephalomyelitis
2006
Park, S.J. (Cheju National University, Jeju, Republic of Korea) | Hwang, I.S. (Cheju National University, Jeju, Republic of Korea) | Kim, G.B. (Cheju National University, Jeju, Republic of Korea) | Shin, T.K. (Cheju National University, Jeju, Republic of Korea) | Jee, Y.H. (Cheju National University, Jeju, Republic of Korea), E-mail: yhjee@cheju.ac.kr
Experimental autoimmune encephalomyelitis (EAE) is a disease model of multiple sclerosis (MS) that is characterized by remittance and relapse of the disease and autoimmune and demyelinating lesions in the central nervous system (CNS). Autoimmune inflammation is maintained by secretion of a large number of protein. Previous studies have suggested that transcripts encoding osteopontin (OPN) are frequently detected in the mRNA population of MS plaques. To elucidate the functional role of OPN in initiation and development of EAE, we examined the expression and localization of OPN in the spinal cord during acute EAE.
Mostrar más [+] Menos [-]Efficacy of ELISA for measurement of protective newcastle disease antibody level in broilers
2006
Kim, J.N. (Chungbuk National University, Cheongju, Republic of Korea) | Heo, W. (Daessung Microbiological Labs. Co. Ltd., Uiwang, Republic of Korea) | Mo, I.P. (Chungbuk National University, Cheongju, Republic of Korea), E-mail: moip@cbu.ac.kr
Newcastle disease (ND) is a highly contagious disease of poultry that can cause severe economic losses throughout the world. Vaccination has been used for a long time and proved as one of the most effective method to reduce the economic loss due to ND virus infection. The measurement of antibody titer such as hamagglutination-inhibition (HI) test with sera has been used as a useful method to evaluate the immunity leve of host. However, HI test is gradually being replaced by the enzyme linked-immunosorbent assay (ELISA).
Mostrar más [+] Menos [-]Descriptive epidemiology of nationwide spread of 2003 classical swine fever epidemic in Korea
2006
Park, C.K. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea), E-mail: parkck@nvrqs.go.kr | Lee, E.S. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Yoon, H.C. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Wee, S.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Song, J.Y. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Moon, O.K. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Choi, E.J. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Kim, H.S. (Chungnam National University, Daejeon, Republic of Korea) | Lee, J.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | An, S.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea)
In March 2003, classical swine fever (CSF) infection was reported in a piggery located at Iksan city, Jeollabuk-do in Korea. Subsequently, a total of 72 infected farms were confirmed between March and December, 2003. Based on epidemiological investigation of the earlier confirmed infected farms, the source of infection was shown to be from a breeding farm. Targeted surveillance of 82 piggeries that had acquired pigs from this breeding farm showed 44 piggeries were infected with CSF virus.
Mostrar más [+] Menos [-]Evaluation of efficacy of Mycoplasma gallisepticum 6/85 live vaccine
2006
Yoon, H.J. (Kangwon National University, Chuncheon, Republic of Korea) | Kang, Z.W. (Kangwon National University, Chuncheon, Republic of Korea) | Jin, J.D. (Kangwon National University, Chuncheon, Republic of Korea) | Shin, E.K. (Kangwon National University, Chuncheon, Republic of Korea) | Jeong, Y.H. (Intervet Korea, Seoul, Republic of Korea) | Jeong, J.H. (Intervet Korea, Seoul, Republic of Korea) | Hahn, T.W. (Kangwon National University, Chuncheon, Republic of Korea), E-mail: twhahn@kangwon.ac.kr
Mycoplasma gallisepticum (MG) continues to persist in many commercial layer farms in Korea, resulting in losses in egg production. Bacterins and live attenuated vaccines have been used for the prevention of losses caused by MG. One of these attenuated vaccines, MG 6/85 vaccine has been reported to be safe and efficacious in layers. However, MG 6/85 vaccine has not been evaluated for its safety and its efficacy in any commercial layer in Korea. Six-week-old specific pathogen-free (SPF) chickens were vaccinated with MG 6/85 vaccine by aerosol and were challenged with virulent MG R strain at 4 weeks after vaccination.
Mostrar más [+] Menos [-]Toxicity of lectin extracted from Korean mistletoe (Viscum album coloratum) in chicks and its immunoadjuvant activity on Newcastle disease virus vaccines
2006
Yeo, S.G. (Kyungpook National University, Daegu, Republic of Korea), E-mail: sgyeo@knu.ac.kr
In order to search the availability of the lectin extracted from Korean mistletoe (Viscum album coloratum) as an adjuvant for the avian vaccines, attempts were made to determine toxicity of the lectin in chicks and its immunostimulating activity on the inactivated vaccines against Newcastle disease virus (NDV). For the determination of toxicity, the lectin was injected into the thigh muscle of SPF chicks (Charles River) of 1-week-old and observed hematologically and pathologically.
Mostrar más [+] Menos [-]Toxicity of lectin extracted from Korean mistletoe (Viscum album coloratum) in piglets and its effects on the immunogenicity of Aujeszky's disease virus vaccines
2006
Yeo, S.G. (Kyungpook National University, Daegu, Republic of Korea), E-mail: sgyeo@knu.ac.kr
In the present study toxicity and immunostimulating activity of the lectin (KML-C), which was extracted from Korean mistletoe (Viscum album coloratum) were investigated in swine. To determine the toxicity, lectin was injected into thigh or cervical muscles of 4-week-old piglets (Landrace) and observed clinically and pathologically. For determinatio of the immunostimulating activity, lectin (0.7 ㎍/kg of body weight)-adjuvanted vaccine of Aujeszky's disease virus (ADV) (NYJ1-87) which was inactivated by 0.2% formalin was injected into the cervical muscle of antibody-negative piglets in the same age group.
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