Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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Immune responses th the vaccines of viral systemic necrosis of carp virus (VSNCV) of comom carp, Cyprinus carpio L.

잉어류 바이러스성전신괴사증바이러스 (VSNCV) 백신 투여에 대한 잉어의 면역반응

  • Published : 20031200
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Abstract

VSNC is a viral disease causing significant economic losses in cultured carp Ciprinus carpio L. in Korea. Carps were immunized with prepared vaccines against VSNCV and examined specific and nonspecific immune responses. Carps were injected by O.2㎖ of formalin-killed vaccine (FKV), heat-killed vaccine (HKV) or E-MEM, respectively and dealt with boost with same way two weeks later. The lysozyme activity of serum and chemiluminescent reponses of head-kidney leucocytes showed increased responses during 2-7 days post-first injection (pfi) and post-boost (pb) in the vaccinated fish, and then decreased to the level of control. As measured by ELISA, vaccinated groups showed a significant increase in VSNCV-specific serum antibodies between 2 weeks pfi and 6weeks pb with a peak at 2 weeks pb. Results of the virus challenge showed that the fish vaccinated with FKV have induced protective immunity, while HKV injection hardly provided protection.

양식 잉어류에서 심각한 피해를 야기하고 있는 VSNCV에 대한 백신을 제작하여 잉어에 투여한 후 특이적 및 비특이적 면역반응을 조사하였다. 백신은 포르마린처리백신 (FKV)과 가온처리백신 (HKV)를 제작하여 건강한 잉어에 0.2㎖씩 복강주사 하였으며, 2주 후 동일한 방법으로 boost 처리하였다. 백신 투여 후 비특이적 면역반응 중 혈청 라이소자임 활성과 대식세포의 chemiluminescent (CL) reponses은 1차 주사 후 및 boost 처리 후 2일째부터 7일째까지 유의적인 증가를 나타내었으며, 이후 대조구 수준으로 감소하였다. ELISA법으로 항체가를 조사한 결과 대조구를 제외한 FKV와 HKV 투여구에서 주사 후 2주 째부터 boost 처리 후 6주 째까지 유의적으로 증가하였으며, 그 중에서도 boost 처리 후 2주 째 최고치를 나타내었다. 각 시험구별로 boost 처리 후 2주 째에 VSNCV로 공격 실험한 결과 FKV 투여구에서는 20%의 누적폐사율을 나타내어 방어력이 인정되었으나, HKV 투여구에서는 70%의 누적폐사율이 나타나 방어효과가 거의 없는 것으로 나타났다.

Keywords

References

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