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NTIS 바로가기電磁波技術 : 韓國電磁波學會誌 = The Proceedings of the Korean Institute of Electromagnetic Engineering and Science, v.29 no.3, 2018년, pp.21 - 31
김주환 (단국대학교 의과대학) , 이진구 (단국대학교 의과대학) , 김학림 (단국대학교 의과대학)
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핵심어 | 질문 | 논문에서 추출한 답변 |
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자가포식의 종류는 어떻게 구분되는가? | 이러한 자가포식의 종류에는 일반적으로 거대자가포식(macroautophagy), 미세자가포식(microautophagy), 그리고 소낭의 형성 없이 샤페론에 의해 단백질의 분해가 일어나는 샤페론 중개 자가포식(Chaperone-Mediated Autophagy: CMA)의 3가지 형태로 나뉜다[9]. 또한, 거대자가포식은 선택된 세포 소기관(oragenelles)에 따라 mitophagy(미토콘드리아), lipo- phagy(지질), pexophagy(퍼옥시솜, peroxisome), chlorophagy(엽록체), ribophagy(리보솜, ribosome), necleophagy(핵, nucleus)등으로 분류된다[10]~[13]. | |
전자기장에 노출되었을 때 가능한 생체 영향이 아직까지 확실하게 검증되지 않고 이와 관련된 연구 결과들이 부족함으로써 초래되는 결과는 무엇인가? | 그러나 전자기장에 노출되었을 때 가능한 생체 영향은 아직까지 확실하게 검증된 바가 없으며, 가능한 건강유해성과 관련하여 명확한 답을 제시하기에는 생물학적 유해성에 대한 충분한 연구결과들이 부족한 실정이다. 따라서 전자기파의 생체 영향에 관한 다수의 미지한 상황에 따른 막연한 두려움이 존재하며, 일반적인 대중들에게 전자파의 생체 영향에 관한 과학적으로 근거 없는 부정적인 정보에 노출되게 한다. 이에 추가하여 다양한 연구자들에 의해서 발표된 연구결과들은 서로 상반되는 결과를 제시하기도 하며, 특히 전자파에 의한 생체 영향 기전에 대한 자세한 정보가 밝혀지지 않아서 막연하고 비과학적이며, 불확실한 정보에 기인하는 전자파 노출에 대한 두려움을 해결하지 못하고 있다. | |
자가포식 작용은 어떠한 특성을 가지고 있는가? | 세포자가포식(autophagy)은 세포 내 손상되고 노화된 세포 소 기관들과 불필요하게 응집된 단백질들을 분해하는 기능을 수행하는데, 이는 세포의 생존 및 항상성 유지를 위한 필수적인 일련의 세포보호 기작이다. 따라서 자가포식 작용은 건강한 상태의 유지를 위해 우리의 몸에서 항상 일어나고 있으며, 여러 가지 스트레스 상황에서는 효율적으로 빠르게 활성화되는 특성을 가지고 있다. 세포내의 자가포식 활성화 조절은 특히 현대인에게 대표적인 신경퇴행성 질환인 알쯔하이머(Alzheimer's disease)나 파킨슨병(Parkinson’s disease)은 신경세포 내에 비정상적으로 아밀로이드 베타(amyloid β) 또는 알파 시누크린(α-synuclien) 같은 단백질의 축적이 주요 원인이 된다[7]. |
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