• 제목/요약/키워드: Oral vaccine

검색결과 149건 처리시간 0.032초

Acute and subacute toxicity studies of GX-12, a DNA vaccine for the treatment of HIV infection, in SD rats

  • Park, Seul-Min;Kang, Kyung-Koo;Sohn, Yong-Sung;Kim, Mi-Ju;Baik, Dae-Hyun;Ahn, Byung-Ok;Kim, Won-Bae
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2002년도 Molecular and Cellular Response to Toxic Substances
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    • pp.157-157
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    • 2002
  • The toxicity of GX-12, a naked DNA vaccine developed by research team of Dong-A Pharmaceutical Company, Green Cross Company and Genexine for the treatment of HIV infection, was investigated in Sprague-Dawley rats. In single-dose intramuscular/oral acute toxicity studies, animals were treated 0, 250, 1000 or 4000 $\mu\textrm{g}$/kg/$m\ell$ in sodium phosphate buffer.(omitted)

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연쇄상구균(Streptococcus mutans GS-5)의 항원단백질 AgI/II의 N-terminus절편에 대한 항체형성 (Generation of antibodies against N-terminus fragment of AgI/II protein from Streptococcus mutans GS-5)

  • 한지혜;백병주;양연미;박정렬;김재곤
    • 대한소아치과학회지
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    • 제33권3호
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    • pp.401-410
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    • 2006
  • 치아 우식은 구강 내 미생물에 의해 치아 석회 조직의 일부가 용해되고 파괴되는 감염성 질환이다. 치아 우식의 원인균은 Streptococcus mutans와 같은 Mutans streptococci로 알려져 있고, 이 미생물이 치면에 접착하여 군집을 형성하는 능력이 균의 독성에 중요한 역할을 한다. S. mutans가 치면의 타액성 피막에 부착하는 데에는 AgI/II와 같은 세포표면의 섬유성 단백질을 매개로 한다. 그러므로, AgI/II는 S. mutans GS-5에 대한 백신 개발에 적절한 목표가 된다. 본 실험은 S. mutans GS-5로부터 AgI/II 유전자를 복제하고 염기서열분석을 하였다. 복제된 AgI/II와 앞서 보고된 S. mutans GS-5의 해당 부위의 280개의 핵산은 완벽하게 일치하였다. 복제된 유전자를 두 부위로 절단하여 형질전환을 통해 재조합 단백질인 AgI/IImr을 얻었고, 정제된 재조합 단백질을 쥐에게 주입하여 다클론 항체를 얻었다. 추출된 다클론 항체는 AgI/IImr항원단백질에 반응하였고, 대조군으로 쓰인 단백질에는 반응하지 않았다.

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A Case Report of Tetanus Patient Showing Trismus and Dysphagia as Early Symptoms

  • Jang, Seo-Hee;Byun, Jin-Seok;Jung, Jae-Kwang;Choi, Jae-Kap
    • Journal of Oral Medicine and Pain
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    • 제45권3호
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    • pp.79-82
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    • 2020
  • Tetanus is a fatal disease caused by the infection Clostridium tetani found in animal feces and soil. It is a vaccine-preventable disease and rarely occurs in developed countries. However, approximately 30 cases still occur annually in South Korea. Tetanus, commonly called lockjaw, cause contraction of the masseter muscles in the early stage, resulting in trismus as the first symptom. As it progresses, spasm extends to various muscles in the face, neck, shoulder, and back, leading to distorted facial expression, dysphagia, backward arching of the body, dyspnea, and even death. Early diagnosis of tetanus is critical because it can quickly become fatal if left untreated. We present a case of trismus caused by tetanus and emphasize the importance of early diagnosis of acute trismus.

Evaluation of systemic and mucosal immune responses in mice administered with recombinant Salmonella Typhimurium expressing IutA protein

  • Oh, In-Gyeong;Choi, Minsu;Lee, John Hwa
    • 대한수의학회지
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    • 제53권3호
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    • pp.163-167
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    • 2013
  • Avian pathogenic Escherichia coli (APEC) are known to cause extraintestinal disease in poultry, leading to substantial losses in the industry. IutA, iron-regulated aerobactin receptor is firmly associated with APEC. To assess the potential of IutA to induce protective immune responses, attenuated Salmonella Typhimurium strain expressing IutA was constructed and administered orally to BALB/c mice. The IutA-specific immune responses were measured with sera, vaginal and fecal samples by an enzyme-linked immunosorbent assay. We found that the Salmonella-IutA vaccine induced significantly higher immune responses as compared to the control inoculated with the attenuated S. Typhimurium containing the plasmid only. The IutA-specific immune responses were increased by second immunization at third week after initial immunization, whereas triple immunization induced lower immune responses than those induced by the double immunization. The Salmonella-IutA vaccine induced a nature of immunity biased to the Th1-type, as judged by the ratio of IutA-specific IgG isotypes (IgG2a/IgG1). Overall, these results suggest that the Salmonella-IutA vaccine appear to be suitable candidate for a vaccine against APEC.