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NTIS 바로가기생명과학회지 = Journal of life science, v.30 no.2, 2020년, pp.202 - 210
채종범 (경북대학교 식품공학부 식품응용공학전공) , 남주옥 (경북대학교 식품공학부 식품응용공학전공)
As the elderly population increases, it is becoming important to prevent and treat muscle loss caused by aging or disease. Steroidal androgen in the protein assimilation steroid (AAS) system is mainly used to induce muscle improvement, but it is well known that long-term or excessive doses of AAS re...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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single compound가 실제로 myogenesis에 영향을 주는 근거는 무엇인가? | 연구의 현황을 살펴보면, Table 1에서 보는 바와 같이 다양한 식물의 추출물을 비롯한 천연물 유래의 Single compound가 다양한 수준의 연구에서 myogenesis를 촉진한다는 연구 결과가 보고되었다. 공통적으로 in vitro 수준의 실험에서 C2C12 Myoblast에 대한 천연물의 처리가 분화와 근관의 비대를 증가시켰고, 몇몇 추출물 및 Single compound에서는 경유하는 일부 기전이 실험적으로 밝혀졌다. 공통적으로, MyoD, Mrf5, Myogenin, MRF4, MyHC를 포함한 근육세포의 분화에 관여하는 인자들 및 마커의 발현을 상향 조절을 유도했다. | |
Myogenesis는 무슨 과정을 말하는가? | Myogenesis는 Fig. 1에서 보는 바와 같이 골격근의 satellite cell이 여러 분화 단계를 거쳐 근섬유를 이루는 과정이다. 첫번째로 근육세포 외곽에 존재하는 satellite cell (Pax7+)이 비활성화 상태에서 활성화되면 증식을 시작하며, MyoD와 Myf-5를 발현하고 myoblast (MyoD+, Myf-5+)로의 분화를 시작한다. | |
AAS를 장기간 또는 과다 복용 시 발생하는 문제점은 무엇인가? | 이러한 AAS의 효능의 발견과 합성이후 미숙 아동의 성장 촉진[19], 암 또는 AIDS 등에 의한 만성 악액질(Cachexia) [4, 27], 노인의 체중 및 뼈 손실방지[45] 등 다양한 치료 목적으로 처방되고 있다. 하지만 AAS의 장기간 또는 과다한 복용은 피부질환[45], 생식 및 내분비 기능 저하[43, 47], 정신 질환[21, 61], 면역계 질환[64], 심혈관[3] 및 간의 기능 장애[67]를 초래한다고 잘 알려져 있다[62]. 따라서 근육 발달 및 증진에 도움을 줄 수 있는 체내 부작용이 상대적으로 낮은 식품소재 또는 천연물 유래 물질을 탐색하는 연구가 필요하지만, 아직은 기초적인 연구나 임상적인 결과가 부족한 실정이다. |
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