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NTIS 바로가기Journal of the Korean Applied Science and Technology = 한국응용과학기술학회지, v.36 no.4, 2019년, pp.1268 - 1280
하수민 (부산대학교 체육교육과) , 김정숙 (부산대학교 체육교육과) , 하민성 (츠쿠바 대학교 건강스포츠과학부) , 김보성 (부산대학교 체육교육과) , 김도연 (부산대학교 체육교육과)
The purpose of this study was to investigate the effects of combined exercise on irisin, body composition and glucose metabolism in obese elderly women with type 2 diabetes mellitus. The subjects were thirty-six obese elderly women with type 2 diabetes volunteers, aged 65 to 85 years, composed of th...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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대부분의 제2형 당뇨병 환자가 과체중이거나 비만이 선행되어 나타나는 이유는 무엇인가? | 대부분의 제2형 당뇨병 환자는 과체중이거나 비만이 선행되어 나타나고, 비만은 전 세계적으로 제2형 당뇨병이 증가하는 가장 중요한 위험 요인이 되므로 “Diabesity”라는 용어로 불리고 있다 [1]. 즉, 비신체적 활동과 높은 칼로리의 식단은 비만과 무증상의 조직 염증 상태를 촉진하게 되고, 이로 인한 포도당 대사의 불균형은 인슐린 저항성을 야기하기 때문에 제2형 당뇨병의 발병으로 이어진다[2,3]. 따라서 비만과 제2형 당뇨병의 대사 장애는 모두 인슐린 작용의 결함이 특징적이다[4]. | |
irisin은 어떤 역할을 하는가? | WAT와 BAT는 서로 다른 기능적 역할을 하지만 직접적으로 서로 전환 될 수 있다[11]. 그 과정은 uncoupling protein 1 (UCP1)이라는 특수한 미토콘드리아 단백질을 통해 이루어지는데, myokine 중 하나인 irisin은 백색 지방 세포의 UCP1 발현을 자극하여 백색 지방을 갈색 지방으로의 전환을 유도하는 역할을 한다[12]. Irisin은 골격근에서 운동의 효과를 전달하는 역할을 하는 peroxisome proliferator activated receptor γ co-activator-1-α (PGC1α)에 의해 유발되며, 세포막 단백질인 fibronectin type III domain-containing protein 5 (FNDC5)로부터 단백질 분해로 잘린 후 혈액 내 순환하는 myokine으로 112개의 아미노산의 펩타이드 구조로 이루어져 있다[12]. | |
운동을 통한 근수축 자극이 제 2형 당뇨병 환자에게 있어 중요한 이유는 무엇인가? | Irisin은 세포 에너지 조절과 관련된 대사 유전자를 유도하여 에너지 소비 및 산화 대사를 증가시키며[14], 지방세포로 이동하여 작용함으로써 비만과 제2형 당뇨병에 잠재적인 치료 이점이 있는 것으로 제안된다[12]. 하지만 대부분의 제2형 당뇨병 환자는 골격근의 기능이 손상되어 PGC1 α의 조절 장애로 인해 낮은 수준의 irisin이 나타나기 때문에 운동을 통한 근수축 자극은 제2형 당뇨병 환자에게 있어 매우 중요한 역할을 할 수 있을 것으로 제안된다[15,16]. |
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