Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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Pathological study on experimental hemorrhagic and hemolytic anemia in Nile tilapia, Oreochromis niloticus

나일틸라피아(Oreochromis niloticus)의 실험적 출혈성과 용혈성 빈혈의 병리학적 연구

  • Song, Na-Young (Department ofAquatic Life Medicine, College of Fisheries Science, Pukyong National University) ;
  • Choi, Hye-Jeong (Department ofAquatic Life Medicine, College of Fisheries Science, Pukyong National University) ;
  • Lee, Mu-Kun (Department ofAquatic Life Medicine, College of Fisheries Science, Pukyong National University) ;
  • Huh, Min-Do (Department ofAquatic Life Medicine, College of Fisheries Science, Pukyong National University)
  • 송나영 (부경대학교 수산생명의학과) ;
  • 최혜정 (부경대학교 수산생명의학과) ;
  • 이무근 (부경대학교 수산생명의학과) ;
  • 허민도 (부경대학교 수산생명의학과)
  • Published : 20051200
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Abstract

This study was conducted to know the differences in pathology between artificially induced hemorrhagic anemia (EHA) and hemolytic anemia (ELA) during the anemic and recovery course, using Nile tilapia (Oreochromis niloticus). EHA were induced by repeated bleedings with a volume of about 1% of body weight through caudal vein. ELA were induced by intraperitoneal injections of 1% phenylhydrazine for 2 times. A period of 16 to 49th day was arbitrarily taken as a recovery phase. There were no prominent clinical signs and gross findings except for pale gills during the anemic state of both. Characteristic erythrocytes with a weekly stained cytoplasm started appearing on the 12th day in both and were still noted on the 49 and 20th day respectively in EHA and ELA. EHA and ELA were normocytic hypochromic and macrocytic normochromic in type respectively, although both were normocytic hypochromic during the recovery phase. In liver, fatty degeneration around central vein on the 12-38th day in EHA and hyaline degeneration around central vein on the 12-26th day in ELA were found. In head kidney, increased hemopoiesis was observed on the 12-26th day in EHA and on the 2-12th day in ELA, and macrophages engulfing erythrocytes were observed on the 16-38th day in EHA and on the 2-12th days in ELA. In spleen, activated ellipsoids on the 12-26th day in EHA. and on the 2-20th day in ELA. In ELA, severe accumulation of hemosiderin in both spleen and head kidney were constantly noted from the 2-49th day. On the 49th, Ht was recovered but Hb was still lower than that of control in both anemia.

나일 틸라피아에 실험적 출혈성 빈혈 (EHA)과 용혈성 빈혈 (ELA)을 제작하여 빈혈 과정과 회복 과정에서의 병리학적 차이를 알기 위해서 본 실험을 수행하였다. EHA는 어체중의 약 1%에 해당하는 혈액을 반복 채혈하여 유도하였다. ELA는 1% phenylhydrazine을 2회 복강 주사하여 유도하였다. 회복 과정은 16일째부터 49일째까지로 하였다. 빈혈 및 회복 기간 동안 아가미의 빈혈성 퇴색 외 특기할 임상 소견은 관찰되지 않았다. 두 빈혈 경우 모두, 12일째에 세포질 염색성이 없는 적혈구들이 출현하기 시작하였으며 EHA의 경우 49일째까지, ELA의 경우 20일째까지 출현하였다. 빈혈 유형은 빈혈 유도 기간에는 EHA의 경우 정구성 저혈색소성이었고 ELA의 경우 대구성 정혈색소성이었으며, 회복 기간에는 두 경우 모두 정구성 저혈색소성이었다. 간장에서 EHA의 경우에 12일째에서 38일째까지 중심정맥 중심성 지방변성이 확인되었고, ELA의 경우에 12일에서 26일째까지 중심정맥 중심성 초자 변성이 확인되었다. EHA의 경우 12일째부터 26일째까지 두신에서 조혈활성 소견이 확인되었으며, ELA의 경우에서는 2일째부터 12일째까지 관찰되었다. 두신에서 적혈구 탐식 대식세포들이 EHA의 경우 16일째부터 38일째까지, ELA의 경우에서는 2일째부터 12일째까지 관찰되었다. 비장 협조직의 비후 소견이 EHA의 경우 12일째부터 26일째까지, ELA의 경우에서는 2일째부터 20일째까지 확인되었다. ELA의 경우 2일째에서 49일째까지 두신과 비장에서 hemosiderin 축적이 현저하였다. 49일째에 두 빈혈 경우 모두 Ht는 회복되었지만 Hb는 완전한 회복을 보이지 않았다.

Keywords

References

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