생명과학회지 (Journal of Life Science)

  • 제12권3호
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  • Pages.306-316
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  • 2002
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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혈관내에 배양한 신경줄기세포의 이식이 말초신경 재생에 미치는 영향

Effect of Transplantation of Intravascular Cultured Neural Stem Cell upon Peripheral Nerve Regeneration

  • 양영철 (인제대학교 의과대학 해부학교실) ;
  • 김우일 (인제대학교 의과대학 해부학교실) ;
  • 박중규 (인제대학교 의과대학 해부학교실) ;
  • 배기원 (인제대학교 의과대학 해부학교실)
  • 발행 : 2002.06.01
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초록

흰쥐의 좌골신경을 절단한 후 혈관내에서 배양한 신경줄기세포를 이식하여 말초신경에서도 수초의 재생이 일어나는지를 형태 학적으로 규명하고 배양한 신경줄기 세포들로부터 분화한 Schwann cell들이 회복할 수 있는지를 조사하여 다음과 같은 결론을 얻었다. 이식한 20일 후 동맥내 배양한 신경줄기세포는 Schwann cell로 분화하여 신경섬유의 재생이 일어나기 시작하였다. Schwann cell은 증식 후 재수초화를 형성하기 위하여 다른 Schwann cell들로부터 여러 가지를 자극을 받고 있었으며 NGF 소견으로 볼 때 신경외막으로부터 기존의 Schwann cell로부터 신경줄기세포의 분화가 유도되었으며 PCNA 반응으로 볼 때도 기존의 신경섬유의 Schwann cell주위에서부터 증식이 일어났다. 미세구조적으로는 Schwann cell의 재수초화, 축삭내 사립체와 미세소관의 수의 증가를 관찰할 수 있었다.

The ultrastructural change of sciatic nerve and immunohistochemical changes of NGF, PCNA were studied at the transplanted segment of intravascular cultured neural stem cell in the rat sciatic nerve by 5 months after the sciatic nerve transection. The transplanted intravascular neural stem cells were differentiated into Schwann reals at the 20th day and these cells began to regenerate by the proliferation and hypertrophy. There were many remyelinating Schwann cells in the transplanted nerve in term of stimulation. According to NGF finding, we suggest preexisting Schwann cells may induce the differentiation of neural stem cells into regenerating Schwann cells. Electron microscopic changes were the remyelinating appearance, the increase of intraaxonal microtubules and enlarged mitochondria and contacting tell processes each other.

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