• Title/Summary/Keyword: Johne's disease

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Sero-prevalence of Paratuberculosis (Johne's disease) of Korean Native Cattle in Busan Area (부산지역 한우의 요네병 감염 실태 조사)

  • Kim, Hong-Tae;Lee, Keun-Woo
    • Journal of Veterinary Clinics
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    • v.30 no.4
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    • pp.230-235
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    • 2013
  • Johne's disease is a chronic inflammatory bowel disease of cattle, sheep, goats and other ruminants. Mycobacterium paratuberculosis is the etiologic agent of this disease. Many studies have been carried out on paratuberculosis from Korean native cattle and dairy cattle in multiple areas around nation, but there is no report in Busan area. The purpose of this study is to investigate the seroprevalence of bovine paratuberculosis in Busan area from March in 2011 to October in 2012. A total of 863 Korean native cattle of 213 farms were tested by ELISA method. The 287 (33.3%) Korean native cattle of 119 (55.9%) farms were positive in ELISA. In regional analysis, 234 (33.6%) out of 696 cows in Kijang-gun, 35 (39.3%) out of 89 cows in Gangseo-gu and 15 (20.8%) out of 72 cows in Geumjeong-gu were positive. In sexual analysis, 277 (33.6%) out of 824 cows in Female and 10 (25.6%) out of 39 cows in Male were positive. In aga-related analysis, 13 (22.4%) out of 58 cows in 1 year, 33 (32.0%) out of 103 cows in 2 years, 87 (34.1%) out of 255 cows in 3 years, 118 (36.6%) out of 322 cows in 4 years, 21 (36.8%) out of 57 cows in 5 years, 8 (29.6%) out of 27 cows in 6 years, 6 (31.6%) out of 19 cows in 7 years and 1 (4.5%) out of 22 cows in 8-11 years were positive.

Prevalence of major legal communicable diseases in bovine and swine in Jeonbuk province (2004~2008) (전북지역에서 2004~2008년에 소와 돼지에서 법정전염병 발생 동향 분석)

  • Hur, Boo-Hong;Lee, Jeong-Won;Song, Hee-Jong
    • Korean Journal of Veterinary Service
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    • v.35 no.2
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    • pp.139-145
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    • 2012
  • Prevalence of major legal communicable diseases in bovine and swine had been monitored in Jeonbuk province from year 2004 to 2008. At least 1 communicable disease had been reported in 687 heads from 68 bovine farms and 17 farms (25.0%) of the 68 positive farms had 1~2 additional outbreaks during the surveillance. By disease, enzootic bovine leukosis, Johne's disease and Akabane disease were occurred in 53 farms (582 heads), 14 farms (100 heads) and 1 farm (5 heads), respectively. Swine communicable diseases were occurred in 4,466 heads from 63 swine farms and 18 farms (28.6%) of the 63 positive farms had 1~2 additional outbreaks during the surveillance. By disease, Aujeszky's disease (AD), porcine epidemic diarrhea (PED), classical swine fever (CSF), porcine reproductive and respiratory syndrome (PRRS), porcine transmissible gastroenteritis (TGE), atrophic rhinitis (AR) and Japanese encephalitis in swine (JE) were occurred in 20 farms (70 heads), 20 farms (2,817 heads), 12 farms (258 heads), 6 farms (1,257 heads), 1 farm (50 heads), 1 farm (2 heads) and 1 farm (10 heads), respectively. In total, 10 communicable diseases (1 species of first-class, 3 species of second-class, and 6 species of third-class) were reported. The first-class diseases were CSF. Johne's disease, and Aujeszky's disease. JE was the second-class and Akabane disease, enzootic bovine leukosis (EBL), PED, PRRS, TGE and AR were third-class diseases.

의사죤씨병(Johne`s disease)의 국내 발생만연을 주시한다.

  • 이방환
    • Journal of the korean veterinary medical association
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    • v.17 no.3
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    • pp.11-13
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    • 1981
  • 지금까지 최근의 죤씨병 국내발생상황과 이병의 개요를 약술하였다. 우리 수의사들이 이병에 대한 관심을 소홀히 한다면 이 병은 부지중에 전국적으로 만연될 가능성이 짙게 될 것이다. 만일 이 병이 전국에 만연되었다고 가상한다면 우사육 업체의 운명은 어찌 되었을 것인가? 참으로 암담하기만 하다. 우리 수의사들이 분발하여 죤씨병의 전국토만연을 과감히 조지해 주실 것을 기대하면서 고를 맺는다.

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메타분석법 (meta-analysis)에 관하여

  • 박선일
    • Journal of the korean veterinary medical association
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    • v.39 no.1
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    • pp.58-72
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    • 2003
  • 메타분석은 evidence-based medicine의 한가지 수단으로서 현재까지 알려진 모든 지식을 체계적으로 종합하고 평가하는 분석법을 의미한다. 인의학에서는 80년대 이후 메타분석이 보편화되어 있으나 수의학에서는 거의 찾아보기 어렵다. 본 원고에서는 메타분석법에 대한 수의학 관련 연구자들의 이해를 돕기 위하여 젖소의 요네병 (Johne's disease)을 진단하는데 사용되는 ELISA검사의 정확도에 대한 메타분석기법의 적용사례를 중심으로 설명한다.

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The herd-level prevalence of antibodies against Mycobacterium avium subspecies paratuberculosis in the Gyeonggi and Chungbuk of Korea, as detected by bulk tank milk ELISA

  • Jang, Yunho;Lee, Haet-Nim;Kim, Narae;Ok, Yu Sin;Kim, Tae-woon;Jung, Suk Chan;Kim, Jae-Myung
    • Korean Journal of Veterinary Service
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    • v.39 no.4
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    • pp.227-230
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    • 2016
  • Mycobacterium avium subspecies paratuberculosis (MAP) causes Johne's disease (JD) in ruminants. This is the first large scale report to estimate the herd-level prevalence of antibodies against MAP by using an ELISA to detect antibodies in bulk tank milk (BTM) samples. The samples were collected from January 2011 to November 2011, from 636 herds of the dairy farms in the Gyeonggi and Chungbuk areas of Korea. The overall apparent prevalence of MAP antibody-positive herds was 8.5%, and regional prevalence were 32/440 (7.3%) and 22/196 (11.2%) of dairy farms in the Gyeonggi and Chungbuk areas, respectively. The results did not differ significantly by region. While we have determined the prevalence rate of MAP in the Gyenoggi and Chungbuk areas in this study, there is a continuing need for well-designed studies to calculate the prevalence of MAP in dairy herds based on culture and molecular findings.

Prevalence of Johne's disease of Korean native cattle in Jeju Province, Korea (제주지역 한우의 요네병 감염실태 조사)

  • Kang, Wan-Choul;Yang, Hyoung-Seok;Ko, Jin-A;Lee, Du-Sik;Son, Won-Geun
    • Korean Journal of Veterinary Service
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    • v.38 no.4
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    • pp.221-225
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    • 2015
  • The bacterium causing Johne's disease (JD), Mycobacterium avium subspecies paratuberculosis (MAP), is distributed worldwide and causes progressive intestinal disease, also known as paratuberculosis, in domestic and exotic ruminants, including cattle. The subclinical form of this disease results in progressive weight loss, reduced milk production, lower slaughter value, and premature culling, with possible impacts on fertility and udder health. Eventually, infection can lead to the clinical form that manifests chronic diarrhea, emaciation, debilitation, and eventual death. JD is a major cause of economic loss in cattle industry. In this study, serological testing was conducted by ELISA to determine the prevalence of MAP in Korean native cattle of Jeju during the duration of 2010 to 2013. A total of 5,150 blood sera were collected in 111 farms and the samples were classified into four different age groups for MAP; group 1 (2 years or less), group 2 (2~4 years), group 3 (5~7 years), and group 4 (over 8 years). Overall seroprevalence of MAP was 5.2% (269/5,150), and annually from 2010 to 2013, they were 11.6% (106/915), 2.1% (10/474), 5.5% (89/1,627), and 3.0% (64/2,134), respectively. Also, the prevalence rates was determined by age groups: 48 of group 1 (17.8%), 154 of group 2 (57.3%), 48 of group 3 (17.8%), and 19 of group 4 (7.1%) were seropositive for MAP. Although seropositive samples were found in all age groups, the highest seroprevalence was found in group 2. This study showed that during the investigation the seroprevalence of MAP tended to decrease.

Analysis of Transcriptional Profiles to Discover Biomarker Candidates in Mycobacterium avium subsp. paratuberculosis-Infected Macrophages, RAW 264.7

  • Cha, Seung Bin;Yoo, Anna;Park, Hong Tae;Sung, Kyoung Yong;Shin, Min Kyoung;Yoo, Han Sang
    • Journal of Microbiology and Biotechnology
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    • v.23 no.8
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    • pp.1167-1175
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    • 2013
  • Paratuberculosis (PTB) or Johne's disease is one of the most serious chronic debilitating diseases of ruminants worldwide that is caused by Mycobacterium avium subsp. paratuberculosis (MAP). MAP is a slow-growing bacterium that has very long latent periods, resulting in difficulties in diagnosing and controlling the disease, especially regarding the diagnosis of fecal shedders of MAP without any clinical signs. Based on this situation, attempts were made to identify biomarkers that show early responses to MAP infection in a macrophage cell line, RAW 264.7. In response to the infection with the bacterium, a lot of genes were turned on and/or off in the cells. Of the altered genes, three different categories were identified based on the time-dependent gene expression patterns. Those genes were considered as possible candidates for biomarkers of MAP infection after confirmation by quantitative RT-PCR analysis. To the best of our knowledge, this is the first attempt at discovering the host transcriptomic biomarkers of PTB, although further investigation will be required to determine whether these biomarker candidates are associated within the natural host.

Whole-Blood Gene-Expression Profiles of Cows Infected with Mycobacterium avium subsp. paratuberculosis Reveal Changes in Immune Response and Lipid Metabolism

  • Shin, Min-Kyoung;Park, Hong-Tae;Shin, Seung Won;Jung, Myunghwan;Im, Young Bin;Park, Hyun-Eui;Cho, Yong-Il;Yoo, Han Sang
    • Journal of Microbiology and Biotechnology
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    • v.25 no.2
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    • pp.255-267
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    • 2015
  • Mycobacterium avium subsp. paratuberculosis (MAP) is the causative agent of Johne's disease, a chronic debilitating disease affecting ruminants worldwide. In the present study, we aimed to determine the major gene networks and pathways underlying the immune response to MAP infection using whole-blood cells, as well as provide the potential transcriptional markers for identifying the status of MAP infection. We analyzed the transcriptional profiles of whole-blood cells of cattle identified and grouped according to the presence of MAP-specific antibodies and the MAP shed by them. The grouping was based on the results obtained by ELISA and PCR analyses as follows: i) Test1 group: MAP-negative results obtained by ELISA and positive results obtained by PCR; ii) Test2 group: MAP-positive results obtained by ELISA and negative results obtained by PCR; iii) Test3 group: MAP-positive results obtained by ELISA and positive results obtained by PCR; iv) uninfected control: MAP-negative results obtained both by ELISA and PCR analysis. The results showed down-regulated production and metabolism of reactive oxygen species in the Test1 group, activation of pathways related to the host-defense response against MAP (LXR/RXR activation and complement system) in the Test2 and Test3 groups, and anti-inflammatory response (activation of IL-10 signaling pathway) only in the Test3 group. Our data indicate a balanced response that serves the immune-limiting mechanism while the host-defense responses are progressing.

국내 소 분변 및 소장조직으로부터 Mycobacterium paratuberculosis 분리

  • Jo Dong Hui;Jeong Seok Chan;Jeong Byeong Yeol;U Gye Hyeong;Yun Yong Deok;Yun Sang Bo;Park Yong Ho
    • Journal of the korean veterinary medical association
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    • v.36 no.1
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    • pp.56-60
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    • 2000
  • Fecal materials and mesenteric lymphnodes from asymptomatic cattle confirmed to be infected with Johne's disease by ELISA were decontaminated with 1$\%$hexadecylpyridinium chloride (HPC) for 20$\~$24 hours at room temperature and ino

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