메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
한진섭 (전북대학교) 박윤정 (베이화대학교) 김상현 (전북대학교)
저널정보
한국운동생리학회 운동과학 운동과학 제33권 제1호
발행연도
2024.2
수록면
36 - 45 (10page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
PURPOSE: This study aims to investigate the bone-muscle crosstalk mechanism by treating dysfunctional osteoblasts with extracellular vehicles (EVs) containing exercise mimetics released during muscle contraction, with the intention of identifying key factors in regulatory mechanisms. METHODS: To understand the bone-muscle crosstalk mechanism, the effects of treatment were evaluated in osteoblasts and C2C12. First, palmitate was administered to osteoblasts to induce bone loss due to endoplasmic reticulum (ER) stress. For validation, two groups were evaluated: a control group (CON) and the palmitate treatment group (PAL). Then, C2C12 myotubes were stimulated with electrical pulses to induce muscle contraction, and the released extracellular vehicles (EVs) were harvested and applied to osteoblasts. The results were used to determine the relevant mechanisms for improving bone loss. The impact of EVs released from muscles on osteoblasts was examined using the CD63-GFP plasmid. Four groups were used to compare across the different variables of interest: CON; EV, EV-treated group; PAL; EP, EV+palmitate-treated group. RESULTS: The palmitate-treated osteoblasts showed increased expression of inositol-requiring protein 1α (IRE1α), decreased sarcoplasmic/endoplasmic reticulum Ca2+-ATPase (SERCA), reduced ER Ca2+, and mitochondrial membrane potential (MMP), indicating induced ER stress. Palmitate-induced ER stress was associated with elevated nuclear factor kappa B (NFκB) and receptor activator of NFκB (RANKL) levels and an increased RANKL/osteoprotegerin (OPG) ratio, causing bone loss. The treatment of osteoblasts with EVs from muscle contraction was found to improve ER stress, the levels of ER Ca2+, MMP, NFκB, and RANKL, and the RANKL/OPG ratio. CONCLUSIONS: Palmitate reduces ER Ca2+ and induces osteoblast ER stress while impairing mitochondrial function. Furthermore, through the RANKL/RANK/OPG pathway, a key mechanism related to bone loss is induced. However, substances induced by muscle contraction can act on osteoblasts through exosomes, potentially improving this process.

목차

등록된 정보가 없습니다.

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

최근 본 자료

전체보기

댓글(0)

0