Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
권호 표지

Inactivation of Infectious Microorganisms by Disinfection and Sterilization Processes for Human Amniotic Membrane Grafts

이식을 위한 사람 양막의 소독 및 멸균공정에 의한 감염성 위해인자 불활화 효과

  • Bae, Jung-Eun (Department of Biological Sciences, Hannam University) ;
  • Kim, Chan-Kyung (Department of Biological Sciences, Hannam University) ;
  • Kim, In-Seop (Department of Biological Sciences, Hannam University)
  • 배정은 (한남대학교 생명.나노과학대학 생명과학과 & 바이오의약품안전성검증센터) ;
  • 김찬경 (한남대학교 생명.나노과학대학 생명과학과 & 바이오의약품안전성검증센터) ;
  • 김인섭 (한남대학교 생명.나노과학대학 생명과학과 & 바이오의약품안전성검증센터)
  • Received : 2009.11.06
  • Accepted : 2009.12.07
  • Published : 2009.12.31
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Abstract

Viral, bacterial, and fungal infection can be transmitted from donor to recipient via transplantation of human amniotic membrane. Therefore human amniotic membrane for transplantation should be disinfected and sterilized before use. The purpose of this study was to examine the efficacy of the disinfection process and sterilization processes used at human tissue bank in the inactivation of viruses, bacteria, and fungi. A variety of experimental model viruses, bacteria, and fungus for human pathogens, including the human immunodeficiency virus type 1 (HIV-1), bovine herpes virus (BHV), bovine viral diarrhoea virus (BVDV), hepatitis A virus (HAV), porcine parvovirus (PPV), Escherichia coli, Bacillus subtilis, and Candida albicans were all selected for this study. Enveloped viruses such as HIV-1, BHV, and BVDV were effectively inactivated to undetectable levels by 70% ethanol treatment, gamma irradiation process, and ethylene oxide (EO) gas sterilization process. Also non-enveloped viruses such as HAV and PPV were effectively inactivated to undetectable levels by gamma irradiation and EO gas treatment. However HAV and PPV showed high resistance to 70% ethanol treatment. E. coli and C. albicans were effectively inactivated to undetectable levels by 70% ethanol treatment, gamma irradiation process, and EO gas treatment. Also B. subtilis was effectively inactivated to undetectable levels by gamma irradiation process and EO gas treatment. However it showed high resistance to 70% ethanol treatment.

이식을 위해 사용하는 사람 양막은 기증자로부터 수혜자에게 바이러스, 세균, 진균과 같은 감염성 위해인자를 전파할 위험이 있다. 따라서 적절한 소독 및 멸균 공정을 통해 이식용 양막 내재 또는 혼입 가능한 감염성 위해인자를 완벽하게 불활화하여야 한다. 본 연구에서는 인체조직은행에서 사용하고 있는 소독 공정과 멸균 공정의 바이러스 및 세균, 진균 불활화 효과를 검증하기 위해 국제적 가이드에 따라 5종의 바이러스[human immunodeficiency virus type 1 (HIV-1), bovine herpes virus (BHV), bovine viral diarrhoea virus (BVDV), hepatitis A virus (HAV), porcine parvovirus (PPV)]와 2종의 세균(Escherichia coli, Bacillus subtilis), 1종의 진균(Candida albicans)을 생물학적 지표로 사용하였다. 양막에 각 생물학적 지표를 첨가한 후 70% 에탄올 소독 공정, 감마선 조사 공정, 산화에틸렌 가스 멸균 공정을 실시한 다음 각 바이러스, 세균, 진균을 회수하여 정량한 후 불활화 정도를 비교하였다. 70% 에탄올 처리 공정에서 HIV-1, BHV, BVDV 같은 외피 바이러스는 처리 시간 2.5분 안에 불활화되었지만, HAV와 PPV 같은 비-외피 바이러스는 에탄올에 매우 큰 저항성을 나타내었다. 감마선 2.5 kGy 조사에 의해 HIV-1, BHV, BVDV는 검출한계 이하로 완벽하게 불활화되었다. HAV와 PPV는 각각 5 kGy와 25 kGy 조사에 의해 검출한계 이하로 불활화되었다. 산화에틸렌 가스 처리에 의해 본 연구에 사용한 모든 바이러스가 검출한계 이하로 불활화되었다. 70% 에탄올 처리 공정에서 E. coli와 C. albicans는 모두 5분 안에 완벽하게 사멸하였다. 하지만 B. subtilis는 큰 저항성을 나타내었다. 감마선 조사 공정과 산화에틸렌 가스 멸균 공정에서 E. coli, B. subtilis, C. albicans 모두 완벽하게 불활화되었다.

Keywords

References

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