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Expression patterns of influenza virus receptors in the respiratory tracts of four species of poultry
Ji Eun Yu, Hakyoung Yoon, Hyun Jeong Lee, Jong Hwan Lee, Byung Joon Chang, Chang Seon Song, Sang-Soep Nahm* 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 1호 2 7-13 (7 pages)
The primary determinant of influenza virus infectivity is the type of linkage between sialic acid and oligosaccharides on the host cells. Hemagglutinin of avian influenza viruses preferentially binds to sialic acids linked to galactose by an α-2,3 linkage whereas hemagglutinin of human influenza viruses binds to sialic acids with an α-2,6 linkage. The distribution patterns of influenza receptors in the avian respiratory tracts are of particular interest because these are important for initial... -
Antigenic and immunogenic investigation of the virulence motif of the Newcastle disease virus fusion protein
Kang-Seuk Choi*, Eun-Kyoung Lee, Woo-Jin Jeon, Jun-Hun Kwon 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2010, 제 11권 제 3호 5 205-211 (7 pages)
Newcastle disease (ND) caused by virulent Newcastle disease virus (NDV) is a highly contagious viral disease of poultry. Virulent NDVs characteristically have a multibasic amino acid sequence (virulence motif) such as RRQKRF at the cleavage site of the precusor fusion (F0) protein. The antigenic and immunogenic characteristics of the virulence motif RRQKRF in the F0 protein of virulent NDVs were investigated. Epitope mapping analysis revealed that a RRQKRF-specific monoclonal antibody 4G2... -
Isolation and characterization of avian metapneumovirus from chickens in Korea
Ji-Sun Kwon, Hyun-Jeong Lee, Seung-Hwan Jeong, Jeong-Yong Park, Young-Ho Hong, Youn-Jeong Lee, Ho-Sik Youn, Dong-Woo Lee4, Sun-H 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2010, 제 11권 제 1호 9 59-66 (8 pages)
reported in Korea since 1992, this is the study isolating aMPV from chickens in this country. We examined 780 oropharyngeal swab or nasal turbinate samples collected from 130 chicken flocks to investigate the prevalence of aMPV and to isolate aMPV from chickens from 2004-2008. Twelve aMPV subtype A and 13 subtype B strains were detected from clinical samples by the aMPV subtype A and B multiplex real-time reverse transcription polymerase chain reaction (RRT-PCR). Partial sequence analysis of the... -
Pathogenicity and antigenicity of a new variant of Korean nephropathogenic infectious bronchitis virus
Kang-Seuk Choi*, Eun-Kyoung Lee, Woo-Jin Jeon, Mi-Ja Park, Jin-Won Kim, Jun-Hun Kwon 대한수의학회 Journal of Veterinary Science 3 Pages
대한수의학회 Journal of Veterinary Science 2009, 제 10권 제 4호 14 357-359 (3 pages)
nephritis and urate deposits) following challenge with the recent IBV field strain. The antigenic relatedness (R value), based on a calculated virus neutralization index, of the K-IIb type field strain and K-IIa type strain KM91 (isolated in 1991) was 30%, which indicated that the recent strain, Kr/Q43/06, is a new variant that is antigenically distinct from strain KM91. This report is the first to document the emergence of a new antigenic variant of nephropathogenic IBV in chicken from Korea. -
Evaluation of a competitive ELISA for antibody detection against avian influenza virus
Dae Sub Song, Youn Jeong Lee, Ok Mi Jeong, Yong Joo Kim, Chan Hee Park, Jung Eun Yoo, Woo Jin Jeon, Jun Hun Kwon, Gun Woo Ha, Bo 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2009, 제 10권 제 4호 8 323-329 (7 pages)
chicken, 86% and 88% in duck, 97% and 100% in turkey, 100% and 87% in goose, and 91% and 97% in swine, respectively. The sensitivities and specificities of the cELISA in this study were higher than those of IZS ELISA for the duck, turkey, goose, and grey partridge sera samples. The results of AGP test against duck and turkey sera also showed significant correlation with the results of cELISA (R-value ＞0.9). In terms of flock sensitivity, the cELISA correlated better with the HI test than with... -
Experimental infection of chickens, ducks and quails with the highly pathogenic H5N1 avian influenza virus
Ok-Mi Jeong, Min-Chul Kim, Min-Jeong Kim, Hyun-Mi Kang, Hye-Ryoung Kim, Yong-Joo Kim, Seong-Joon Joh, Jun-Hun Kwon, Youn-Jeong L 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2009, 제 10권 제 1호 8 53-60 (8 pages)
A/chicken/Korea/IS/06. All the chickens and quails died on 3 days and 3-6 days post-inoculation (DPI), respectively, whilst the ducks only showed signs of mild depression. The uninoculated chickens and quails placed soon after with the inoculated flock died on 5.3 and 7.5 DPI, respectively. Both oropharyngeal and cloacal swabs were taken for all three species during various time intervals after inoculation. It was found that oropharyngeal swabs showed higher viral titers than in cloacal swabs... -
Protection of chickens from Newcastle disease with a recombinant baculovirus subunit vaccine expressing the fusion and hemagglutinin- neuraminidase proteins
Youn-Jeong Lee, Haan-Woo Sung, Jun-Gu Choi, Eun-Kyoung Lee, Hachung Yoon, Jae-Hong Kim, Chang-Seon Song 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 3호 11 301-308 (8 pages)
Recombinant baculoviruses containing the fusion (F) and hemagglutinin-neuraminidase (HN) glycoprotein gene of the viscerotropic velogenic (vv) Newcastle disease virus (NDV) isolate, Kr-005/00, and a lentogenic La Sota strain of the NDV were constructed in an attempt to develop an effective subunit vaccine to the recent epizootic vvNDV. The level of protection was determined by evaluating the clinical signs, mortality, and virus shedding from the oropharynx and cloaca of chickens after a... -
Protective efficacy of commercial inactivated Newcastle disease virus vaccines in chickens against a recent Korean epizootic strain
Woo-Jin Jeon, Eun-Kyoung Lee, Young-Jeong Lee, Ok-Mi Jeong, Yong-Joo Kim, Jun-Hun Kwon, Kang-Seuk Choi 대한수의학회 Journal of Veterinary Science
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 3호 10 295-294 (0 pages)
recently isolated Korean epizootic genotype VII strain. Six-week-old SPF chickens were vaccinated once and challenged three weeks later via the eye drop/intranasal route. All vaccinated birds were fully protected from disease, regardless of the vaccine strains used. All vaccinated and challenged groups showed significant sero-conversion 14 days after challenge. However, some vaccinated birds, despite being protected from disease, shed the challenge virus from their oro-pharynx and cloaca, albeit... -
Plasma haptoglobin and immunoglobulins as diagnostic indicators of deoxynivalenol intoxication
Eun-Joo Kim, Sang-Hee Jeong, Joon-Hyoung Cho, Hyun-Ok Ku, Hyun-Mi Pyo, Hwan-Goo Kang, Kyoung-Ho Choi 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 3호 5 257-266 (10 pages)
This study aimed to discover potential biomarkers for dioxynivalenol (DON) intoxication. B6C3F1 male mice were orally exposed to 0.83, 2.5 and 7.5 mg/kg body weight (bw) DON for 8 days and the differential protein expressions in their blood plasma were determined by SELDI - Time-of-Flight/ Mass Spectrometry (TOF/MS) and the immunoglobulins (Igs) G, A, M and E in the serum were investigated. 11.7 kDa protein was significantly highly expressed according to DON administration and this protein was... -
Seroprevalence of low pathogenic avian influenza (H9N2) and associated risk factors in the Gyeonggi-do of Korea during 2005-2006
Jong-Tae Woo, Bong Kyun Park* 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 2호 6 161-168 (8 pages)
Between November 2005 and March 2006, a total of 253 poultry flocks in the Gyeonggi-do of Korea were examined for seroprevalence against avian influenza (AI) using a hemagglutination inhibition (HI) test and an agar gel precipitation test. No low pathogenic avian influenza (LPAI) virus was isolated from 47 seropositive flocks that lacked clinical signs during sampling. The unadjusted percentage of seroprevalence rates of layer and broiler flocks were not significantly different, i.e., 26%...
