한국임상수의학회지 (Journal of Veterinary Clinics)

  • 제22권4호
  • /
  • Pages.322-327
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  • 2005
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  • 1598-298X(pISSN)
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  • 2384-0749(eISSN)
한국임상수의학회 (The Korean Society of Veterinary Clinics)
권호 표지

개의 신장 동종 이식에서 초급성 거부반응의 예방을 위한 보체의존성 세포독성 DLA 플래스 I 교차 반응

Complement-dependent Cytotoxic Crossmatch for Prevention of Hyperacute Rejection in Canine Renal Allografts

  • Ghil Heh Myung (Department of Veterinary Medicine, and Institute of Veterinary Sciences, Kangwon National University) ;
  • Woo Heung-Myung (Department of Veterinary Medicine, and Institute of Veterinary Sciences, Kangwon National University)
  • 발행 : 2005.12.01
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초록

보체의존성 세포독성반응(CDC)을 이용한 DLA class I교차 반응의 실험방법을 정립함으로써 개의 동종 신장이식 후 초기에 발생되는 초급성 거부반응을 억제하는데 응용하고자 븐 실험을 실시하였다. 체중(약 5kg)과 연령(약 1년령)이 유사한 잡종견을 대상으로 적혈구 교차 반응을 실시하여 상호 음성인 7마리를 실험에 사용하였다. 혈액형이 동일한 개체를 대상으로 CDC검사를 실시하였으며, Anti-dog serum, Hank's balanced salt solution (HBSS), 그리고 자가 혈청을 각각 양성 음성 그리고 자가 대조 혈청으로 이용하였다. Class I보체와 반응시킨 후 에오신으로 염색하여 고정한 다음 위상차 현미경 100배율에서 조사하였다. 국제 Cytotoxicity scoring system에 의하려 죽은 세포가 $20\%$ 이상이면 양성으로 평가하였다. CDC 결과 동일 혈액형 군에서 상호 음성이 나온 경우를 대상으로 상호 동종이식을 실시하여 초급성 거부반응의 발생 정도를 평가하였다. 혈액형이 1.2 B인 4두 중 1두는 자가항체를 가지고 있었다. CDC 결과 동일 혈액형 군에서 각각 1쌍이 상호 음성을 나타내었고, 혈액형이 다른 1쌍에서도 상호 음성이 관찰되었다. 혈액형이 동일하고 CDC음성인 2쌍 4두를 대상으로 상호 신장 이식을 한 결과 4마리 모두 초급성 거부반응이 나타나지 않았다. 이 실험에서 확립한 DLA교차 방법은 동종 이식에서 초급성 거부반응을 억제하는데 효과적인 방법이며, 향후 개의 동종 장기 이식에서 조직적합성 평가를 위해 응용될 수 있을 것이라 사료된다.

DLA class I complement-dependent cytotoxicity (CDC) cross-match method was established to control hyperacute rejections in organ transplantation. The aim of the present study is to investigate if DLA class 1 CDC corssmatch method is effective to prevent hyperacute rejections in canine renal allografts. Seven mongrel dogs of similar age and weight were used. Erythrocyte crossmatch was first performed and only the negatives were used. Among the same blood types, CDC cross-match was performed. Anti-dog serum, Hank's balanced salt solution(HBSS), and tile self-serum was used as a positive-, a negative-, and all auto-control respectively. After the reaction with class I complement, it was stained with eosin and scored by international cytotoxicity scoring system under inverted phase microscope. According to these results, kidneys oi CDC negatives among same blood types were cross-transplanted to observe the incidence of hyperacute rejections. One of four 1.2 B blood type dogs had autoantibodies. here were negative CDC results among each blood type, and also there were negative results between different blood types. Two pairs with the same blood types and negative CDC results underwent allo-transplantation each other. There were no hyperacute rejections. DLA cross-match method studied in this experiment for canine renal allograft can be effective to prevent hyperacute rejections. it may be applicable for the future studies of histocompatibility testing in canine renal allografts.

키워드

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