DOI QR코드

DOI QR Code

흰쥐의 관절연골에서 맥동전자장과 맥동초음파가 HSP70의 과발현을 통한 연골형성에 미치는 영향

Pulsed Electromagnetic Field and Pulsed Ultrasound Increases Chondrogenesis through HSP70 Overexpression in Rat Articular Cartilage

  • 구현모 (경성대학교 이과대학 물리치료학과)
  • Koo, Hyun-Mo (Department of Physical Therapy, College of Science, Kyungsung University)
  • 투고 : 2013.01.17
  • 심사 : 2013.02.13
  • 발행 : 2013.02.28

초록

연구목적: 본 연구는 흰쥐를 대상으로 정강뼈의 관절연골에 적용한 맥동전자장과 맥동초음파가 HSP70(Heat shock protein 70)의 발현을 통한 연골 형성에 미치는 영향을 알아보고자 실시하였다. 연구방법: 36마리의 200~250g의 Sprague-Dawley 흰쥐를 대조군, 맥동전자장 적용군, 맥동초음파 적용군으로 각 집단별로 12마리씩 무작위 배정하여 실험을 진행하였다. 맥동전자장은 27.12 MHz의 주파수, 5가우스의 강도, 450 W의 출력으로 10분간 적용하였고, 맥동초음파는 20%의 맥동비, 1MHz의 주파수, $1.5W/cm^2$의 강도로 10분간 적용하였다. 연구결과: 맥동전자장 적용군과 맥동초음파 적용군의 관절연골 조직에서 유의한 수준의 HSP70 발현량을 나타냈다. 또한 맥동전자장 적용군과 맥동초음파 적용군에서는 Akt, Erk1, CREB의 높은 활성도를 나타내었고, 맥동초음파 적용군에 비해서 맥동전자장 적용군의 더 높은 수준의 활성도를 보였다. 결론: 맥동전자장과 맥동초음파는 HSP70의 과발현을 유발하고, 이를 통해 연골형성을 증가시키는 것으로 나타나, 향후 관절연골의 손상에 대한 임상적 적용을 위한 추가적인 연구가 진행되어야 할 것으로 생각된다.

키워드

참고문헌

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