• Title/Summary/Keyword: anthrax

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A Study on the Principal Zoonoses for Food Sanitation (식품위생학상(食品衛生學上) 중요(重要) Zoonoses 에 관(關)한 조사연구(調査硏究))

  • Lee, Yong-Wook
    • Korean Journal of Food Science and Technology
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    • v.5 no.2
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    • pp.108-112
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    • 1973
  • Zoonoses are very important disease. But little attention has been given to the study of zoonoses in Korea. The author reviewed publications about zoonoses outbreakings in Korea and evaluated and analyzed the data available. It is hoped that the information will be use for reference in future endeavors of study in the field of zoonoses in Korea. The information obtained are as follows: 1) From 1962 to 1966. there have been 3 cases of anthrax. 2 cases of brucellosis and 140 cases of erysipeloid. 2) Throughout Korea, there are 670 slaughther houses and for last ten years cows and swines were condemned by the inspection before slaugter the ranges were as follows: cows : $0.45{\sim}0.98%$ swines : $0.005{\sim}0.05%$ 3) Epidemiological pattern of zoonoses in animals: a) Direct zoonoses are anthrax brucellosis and erysipelos. Encidence rate of anthrax 1.7 per 100,000 in 1964, burcellosis 1338.4 in 1960, erysipelos of swine 1897.2 in 1962. b) It is noticed that $1.0{\sim}2.7%$ of swine in mainland and $3.8{\sim}8.5%$ in Chechu island were infected by cysticercus cellulose.

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Expression of Anthrax Lethal Factor, a Major Virulence Factor of Anthrax, in Saccharomyces cerevisiae (Yeast내에서 탄저병 원인균인 Bacillus anthracis의 치사독소인 Lethal Factor 단백질 발현)

  • Hwang Hyehyun;Kim Joungmok;Choi Kyoung-Jae;Chung Hoeil;Han Sung-Hwan;Koo Bon-Sung;Yoon Moon-Young
    • Korean Journal of Microbiology
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    • v.41 no.4
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    • pp.275-280
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    • 2005
  • Anthrax is an infectious disease caused by the gram-positive bacterium, Bacillus anthracis. Anthrax toxin is a tripartite toxin comprising of protective antigen (PA), lethal factor (LF) and edema factor (EF). PA is the receptor-binding component, which facilitates the entry of LF or EF onto the cytosol. LF is a zinc-dependent metalloprotease, which is a critical virulence factor in cytotoxicity of infected animals. Therefore, it is of interest to develop its potent inhibitors for the neutralization of anthrax toxin. The first step to identify the inhibitors is the development of a rapid, sensitive, and simple assay method with a high-throughput ability. Much efforts have been concentrated on the preparation of powerful assays and on the screening of inhibitors using these system. In the present study, we have tried to construct anthrax lethal factor in yeast expression system to prepare cell-based high-throughput assay system. Here, we have shown the results covering the construction of a new vector system, subcloning of LF gene, and the expression of target gene. Our results are first trial to express LF gene in eukaryote and provide the basic steps in design of cell-based assay system.

A Study on the Effective Removal Method of Microbial Contaminants in Building According to Bioviolence Agents (Bioviolence Agents에 따른 건물내 미생물오염원의 효율적인 제거방안에 관한 연구)

  • Lee, Hyun-Woo;Hong, Jin-Kwan
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.22 no.12
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    • pp.881-890
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    • 2010
  • As Influenza A virus(H1N1) has been spreading more rapidly around globe, the study on the airborne disease which is transimitted through the respiratory system is on the rise. In this study, the multizone simulation of the public building against bioviolence is performed in the case of unexpected spread of microbial contaminants, such as bioviolence agent, Influenza A, Smallpox, B. anthrax and transport and control characteristics of above three kinds of bioviolence agents are evaluted. Results suggest that Influenza A and Smallpox which has small mean diameter can be more removable than B. anthrax by using high UVGI grade condition and B. anthrax which has large mean diameter can be more removable than Influenza A and Smallpox by using high filter grade condition. Results also suggest that installing a combined air treatment system is more effective to reduce the damage and engineers will use immune building technology for removing the bioviolence agents effectively.

A Brief History and National Safety Regulation on the Weapons of Mass Destruction Including Biological Agents (생물작용제를 포함한 대량살상용 생물학적 무기에 대한 역사 및 법률적 안전규제 사항에 관한 고찰)

  • Kim, Jee-Hee;Lee, Si-Young
    • Journal of the Korean Society of Safety
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    • v.22 no.4
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    • pp.102-109
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    • 2007
  • A bioterrorism attack is the deliberate release of viruses, bacteria, or other germs(agents) used to cause illness or death in people, animals, or plant. These agents are found in nature, but it is possible that they could be changed to increase their ability to cause disease, make them resistant to current medicines, or to increase their ability to be spread into the environment. Terrorists may use biological agents because these agents can be extremely difficult to detect and do not cause illness for several days. Some bioterrorism agents, like smallpox virus, can spread from person to person, like anthrax, can not. From these agents, we discussed the characteristics of biological agents and national safety regulation on the weapons of mass destruction including bioterrorism.

A review on the Pathogens and Diseases Associated with Biological weapons (생물무기로 사용된 병원균과 질병에 대한 고찰)

  • Choi Chul-soon
    • Journal of the korean veterinary medical association
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    • v.38 no.9
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    • pp.781-800
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    • 2002
  • Recently, biological weapons (BWs) prepared with pathogenic microorganisms, toxins and biological vectors have been used maliciously for biological warfare, bioterrorism and/or agroterrorism by hostile countries and terrorists. In this review, historical background of disease and malicious use of BWs pathogenicity of microorganisms, advanced methodology involved in laboratory diagnosis, and prevention and control of anthrax (Bacillus anthracis), plague (Yersinia pseudotuberculosis subs. pestis), glanders (Burkholderia mallei), and smallpox (Variola virus) which have been abused for biological warfare or bioterrorism were discussed. In addition, the pathogenicity of microorganisms and the methodology needed to diagnose and control 6 diseases identified by WHO/CDC, ie., smallpox, inhalation anthrax, pneumonic plague, botulism, tularemia, and hemorrhagic fevers that would wreak havoc if terrorists successfully disseminated the germs by air were described.

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The Strategic Plan for Preparedness and Response to Bioterrorism in Korea (우리나라의 생물테러 대비 및 대응방안)

  • Hwang, Hyun-Soon
    • Journal of Preventive Medicine and Public Health
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    • v.41 no.4
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    • pp.209-213
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    • 2008
  • Following the Anthrax bioterrorism attacks in the US in 2001, the Korean government established comprehensive countermeasures against bioterrorism. These measures included the government assuming management of all infectious agents that cause diseases, including smallpox, anthrax, plaque, botulism, and the causative agents of viral hemorrhagic fevers (ebola fever, marburg fever, and lassa fever) for national security. In addition, the Korean government is reinforcing the ability to prepare and respond to bioterrorism. Some of the measures being implemented include revising the laws and guidelines that apply to the use of infectious agents, the construction and operation of dual surveillance systems for bioterrorism, stockpiling and managing products necessary to respond to an emergency (smallpox vaccine, antibiotics, etc.) and vigorously training emergency room staff and heath workers to ensure they can respond appropriately. In addition, the government's measures include improved public relations, building and maintaining international cooperation, and developing new vaccines and drugs for treatments of infectious agents used to create bioweapons.

Molecular Diversity of pagA Gene from Baciilus anthracis (탄저균 pagA 유전자의 분자적 다양성)

  • 김성주;조기승;최영길;채영규
    • Korean Journal of Microbiology
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    • v.37 no.1
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    • pp.49-55
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    • 2001
  • Bacillus anthracis is a gram-positive spore-forming bacterium that causes the disease anthrax. The anthrax toxin contains three components, including the protective antigen (PA), which binds to eucaryotic cell surface receptors and mediates the transport of toxins into the cell. In this study, the entire 2,294-nucleotide protective antigen gene (pag) was sequenced from 4 of B. anthracis strains to identify potential variation in the toxin and to further our understanding of B. anthracis evolution in Korea. Sequence alignment of the entire PA gene from 30 strains representative of the four B. anthracis diversity groups revealed mutations. The mutation of B. anthracis BAK are located adjacent to a highly antigenic region crossing the junction between PA domains 3 and 4 shown to be critical to LF binding. The different mutational combinations observed in this study give rise to 11 PA genotypes and 4PA phenotypes. Three-dimensional analysis of all the amino acid changes (Ala to Val) observed in BAK indicated that these changes are not only close sequentially but also very close in three-dimensional space to the antigenic region importan tfor LF binding. Phylogenetic (cladistic) analysis of the pag corresponded with previous strain grouping based on chromosomal variation, suggesting that plasmid evolution in B. anthracis has occurred with little or no horizontal transfer between the different strains.

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