발생중인 Mongolian gerbil의 전뇌에서 NGF, GFAP 및 CNTF의 분포

Immunohistochemical Localization of Nerve Growth Factor, Glial Fibrillary Acidic Protein and Ciliary Neurotrophic Factor in the Forebrain of the Developing Mongolian Gerbil

  • Park, Il-Kwon (College of Veterinary Medicine, Chungnam National University) ;
  • Lee, Kyoug-Youl (College of Veterinary Medicine, Chungnam National University) ;
  • Song, Chi-Won (College of Veterinary Medicine, Chungnam National University) ;
  • Kwon, Hyo-Jung (College of Veterinary Medicine, Chungnam National University) ;
  • Park, Mi-Sun (College of Veterinary Medicine, Chungnam National University) ;
  • Lee, Mi-Young (College of Veterinary Medicine, Chungnam National University) ;
  • Jeong, Young-Gil (College of Medicine, Konyang University) ;
  • Lee, Chul-Ho (Korean Research Institute of bioscience and biotechnology (KRIBB)) ;
  • Ha, Kwon-Soo (College of Medicine, Kangwon National University) ;
  • Lee, Kang-Yi (College of Oriental Medicine, Daejeon University) ;
  • Kim, Moo-Kang (College of Veterinary Medicine, Chungnam National University)
  • 심사 : 2002.06.10
  • 발행 : 2002.06.29

초록

중추신경계는 신경원(neuron)과 이를 지지해주는 신경아교세포(neuroglia)로 이루어져 있다. 발생과정중 신경원의 발달은 NGF(neruv growht factor)에 의해 관찰이 가능하고, 아교세포들중 별모양아교세포는 GFAP(Glial fibrillary acidic protein)항체로 밝혀낼 수 있다. CNTF(Cillary neurotrophic factor)는 이전에는 운동신경원의 발생 및 유지에 있어 중요한 역할을 하는 인자로 알려져 왔으며, 최근에는 발생과정 중 NGF와 GFAP의 역할에 도움을 주는 것으로 알려졌다. 본 연구에서는 이러한 NGF, GFAP, CNTF를 발생과정 중(임신 15,17,19,21일, 출생 1,2,3,일, 1,2,3주)의 몽골리안 저빌의 전뇌에서 시간에 따른 분포를 광학현미경, 형광염색을 통한 공초점현미경 및 전자현미경을 통해 알아보고자 하였다. 전뇌에서 NGF는 발생 19일령에서부터 대뇌피질에서 관찰되기 시작해서 후각망울, 해마체 및 diagonal band에 관찰되었고, 출생 3일령에서 가장 강한 염색성을 보였으며 그 반응은 출생 3주까지도 관찰되었다. GFAP는 출생17일령에서 뇌실로부터 아교세포가 관찰되는 형태가 보였으며, 외측뇌실과 제3뇌실에서부터 피질로 이동하는 형태로 관찰되었다. 또한 후각망울의 과립층, 대뇌피질 및 해마체에서 관찰되었으며, 출생 2일령에서 가장 강한 반응을 나타내었다. CNTF는 신경원과 신경아교세포에서 관찰되었으며, NGF와 GFAP와는 달리 출생 전에서는 관찰되지 않다가 출생 1일령부터 후각망울 및 대뇌피질에서 약하게 관찰되기 시작되었으며, 이러한 반응은 출생 2주령에서 잘 관찰되었다. 전자현미경상에서는 신경원과 신경아교세포에서 특징적인 구조는 관찰되지 않았으나, 각각의 항체에 대한 반응이 나타난 세포에서는 사립체와 형질내세망과 같은 세포소기관들이 많이 관찰되었다. 이러한 Mongolian gerbil 전뇌에서의 NGF, GFAP 및 CNTF의 분포는 비슷한 임신일령의 설치류와 거의 유사하게 관찰되었으며, 배아과정 및 출생 후 발달에 따른 전뇌에서의 신경원과 신경아교세포에서의 분포를 볼 수 있었다.

과제정보

연구 과제 주관 기관 : 한국과학재단

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