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Department Letter to the Editor| Volume 93, ISSUE 10, P1882, October 2012

Effect of Low-Intensity Pulsed Ultrasound on the Cartilage Repair in People With Mild to Moderate Knee Osteoarthritis: A Novel Molecular Mechanism

      I read with great interest the article by Loyola-Sánchez et al
      • Loyola-Sánchez A.
      • Richardson J.
      • Beattie K.A.
      • Otero-Fuentes C.
      • Adachi J.D.
      • MacIntyre N.J.
      Effect of low-intensity pulsed ultrasound on the cartilage repair in people with mild to moderate knee osteoarthritis: a double-blinded, randomized, placebo-controlled pilot study.
      regarding the effect of low-intensity pulsed ultrasound (LIPUS) on the cartilage repair in osteoarthritis. I would like to complete the discussion of Loyola-Sánchez by introducing a major route in which LIPUS could repair cartilage in osteoarthritis.
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      References

        • Loyola-Sánchez A.
        • Richardson J.
        • Beattie K.A.
        • Otero-Fuentes C.
        • Adachi J.D.
        • MacIntyre N.J.
        Effect of low-intensity pulsed ultrasound on the cartilage repair in people with mild to moderate knee osteoarthritis: a double-blinded, randomized, placebo-controlled pilot study.
        Arch Phys Med Rehabil. 2012; 93: 35-42
        • Clérigues V.
        • Guillén M.I.
        • Gomar F.
        • Alcaraz M.J.
        Haem oxygenase-1 counteracts the effects of interleukin-1β on inflammatory and senescence markers in cartilage-subchondral bone explants from osteoarthritic patients.
        Clin Sci (Lond). 2012; 122: 239-250
        • Tsuang Y.H.
        • Liao L.W.
        • Chao Y.H.
        • et al.
        Effects of low intensity pulsed ultrasound on rat Schwann cells metabolism.
        Artif Organs. 2011; 35: 373-383

      Linked Article

      • The Authors Respond
        Archives of Physical Medicine and RehabilitationVol. 93Issue 10
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          In response to Namazi's letter, we want to comment that the recent evidence on the positive effects of low-intensity pulsed ultrasound (LIPUS) over the regulation of the proinflammatory interleukin 1 (IL1) verifies the validity of the mechanotransduction theory. This cellular theory explains how living cells convert mechanical stimulus into biochemical responses through a complex process mediated by a large number of extracellular and intracellular structures, such as stretch-activated ion channels and integrins.
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