Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
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Ultrastructural Alterations in the Gastric Mucous Epithelial Cells of Mouse Inoculated with Ehrlich Carcinoma Cells, Induced by 5-Fluorouracil, Mitomycin C or Acriflavine-Guanosine Compound (AG60)

5-Fluorouracil, Mitomycin C 및 Acriflavine-Guanosine 복합제가 Ehrlich 암세포를 이식한 생쥐 위점막 점액상피세포의 미세구조에 미치는 영향

  • Ko, Eun-Ju (Department of Anatomy, College of Medicine, Soonchunhyang University) ;
  • Park, Kyung-Ho (Department of Anatomy, College of Medicine, Soonchunhyang University) ;
  • Park, Dae-Kyoon (Department of Anatomy, College of Medicine, Soonchunhyang University) ;
  • Kim, Duk-Soo (Department of Anatomy, College of Medicine, Soonchunhyang University) ;
  • Ko, Jeong-Sik (Department of Anatomy, College of Medicine, Soonchunhyang University)
  • 고은주 (순천향대학교 의과대학 해부학교실) ;
  • 박경호 (순천향대학교 의과대학 해부학교실) ;
  • 박대균 (순천향대학교 의과대학 해부학교실) ;
  • 김덕수 (순천향대학교 의과대학 해부학교실) ;
  • 고정식 (순천향대학교 의과대학 해부학교실)
  • Received : 2010.12.23
  • Accepted : 2011.03.23
  • Published : 2011.03.31
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Abstract

This experiment was performed to evaluate the morphological responses of the gastric epithelial cells of the mouse, inoculated with Ehrlich carcinoma cells in the inguinal area, following administration of 5-fluorouracil, mitomycin C or Acriflavine-Guanosine compound (AG60). In this study, each mouse was inoculated with $1{\times}10^7$ Ehrlich carcinoma cells subcutaneously in the inguinal area. From next day after inoculations, 0.2 mL of saline, 5-fluorouracil (30 mg/kg), mitomycin C ($400{\mu}g/kg$) or AG60 (30 mg/kg) were injected to the animals every other day, respectively. Each animals were sacrificed after 7th injection and tissue were taken from the gastric mucosa. Thereafter, the ultrathin sections were stained with uranyl acetate and lead citrate. In the 5-fluorouracil-, mitomycin C- or AG60-treated mice, myelin figures and multivesicular bodies within the gastric mucous epithelial cells were observed more frequently than those of the normal control. In the 5-fluorouracil-treated mice, membrane structures containing a few mucous granules in the luminal space were observed. Indeed, bulging cytoplasmic process containing mucous granules protruding into the gastric lumen were observed in the mitomycin Ctreated mice. Therefore, this study suggested that AG60 as compared with 5-fluorourail and mitomycin C may effective medicine without damage to the secretion ability of gastric mucous epithelial cells.

이 실험은 Ehrlich 종양세포를 이식한 후 5-fluorouracil, mitomycin 및 acriflavine-guanosin 복합제(AG60)을 투여하였을 때, 위점막 점액상피세포의 미세구조적 변화를 연구하고자 시행하였다. 실험동물로는 ICR생쥐를 사용하였으며 정상대조군 이외의 종양대조군, 5-fluorouracil, mitomycin C 및 AG60 투여군의 동물들은 샅부위 피부밑조직에 각각 $1{\times}10^7$의 Ehrlich 종양세포를 이식하였다. 각각의 실험군은 종양세포를 이식한 다음날부터 5-fluorouracil (30 mg/kg), mitomycin C ($400{\mu}g/kg$) 및 AG60 (30 mg/kg)을 격일 간격으로 한번씩 피부밑조직에 주사하였다. 종양대조군은 종양세포이식 후에 0.2 mL의 생리식염수를 피부밑조직에 주사하였고 정상대조군은 종양세포를 이식하지 않은 동물을 사용하였다. 종양대조군을 비롯한 실험군은 생리식염수 또는 각각의 약제를 격일 간격으로 7회씩 투여한 다음날, 에테르(ether) 마취하에 앞배벽을 열어 위조직을 절취하였다. 절취한 조직은 2.5% 글루타르알데히드(glutaraldehyde)-1.5% 파라포름알데히드(paraformaldehyde) 혼합액에 고정한 후, 1% 오스뮴사산화물(osmium tetroxide)용액에 다시 고정한 후 탈수과정을 거쳐 애럴다이트(araldite) 혼합액에 포매하였다. 포매된 위점막 조직은 얇은 절편을 만들었으며, 각 절편은 우라닐아세테이트(uranyl acetate)용액과 구연산납(lead citrate)용액으로 대조염색한 후, 전자현미경으로 비교 관찰하였다. 5-fluorouracil 투여군은 종양대조군에 비해 점액상피세포에 수초구조(myelin figure)가 자주 관찰되고, 분비과립이 세포질을 포함한 막성구조에 싸여 속공간으로 함께 분비되는 부분분비현상이 보일 정도로 손상을 받았다. 그리고 mitomycin C 역시 수초구조가 자주 관찰되고 분비과립을 함유한 세포질이 속공간으로 돌출되는 등의 미세구조적 변화를 보였다. 그러나 AG60의 경우는 수초구조와 다소포체가 비교적 자주 관찰되는 외에는 별다른 미세구조적 변화를 관찰할 수 없었다. 이상의 결과를 종합해보면 mitomycin C, 5-fluorouracil 및 AG60을 반복 투여 하면 위점막 점액상피세포의 분비기능이 억제되었음을 시사하는 미세구조적 변화를 보였다. 그러나 세포의 손상 정도가 mitomycin C와 5-fluorouracil 투여군에 비해 AG60 투여군에서 매우 경미하였으므로 AG60은 위점막 점액상피세포의 분비기능에 큰 손상을 주지 않는 약제라고 생각된다.

Keywords

References

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