Whole-body periodic acceleration reduces brain damage in a focal ischemia model

Neuroscience. 2009 Feb 18;158(4):1390-6. doi: 10.1016/j.neuroscience.2008.12.005. Epub 2008 Dec 14.

Abstract

Stroke is the second most common cause of death and major cause of disability worldwide. Actual treatment involves surgery and/or thrombolytic drugs, but there is an urgent need for new approaches. Periodic acceleration, a rocking headward to footward movement of the whole body, is a non-invasive method to induce pulsatile shear stress on the vascular endothelium eliciting an enhanced production and secretion of endothelium-derived products such as nitric oxide, prostacyclin, prostaglandin E2, tissue plasminogen activator (tPA), and adrenomedullin. All these products have been shown to protect the brain from ischemic injuries. A rat model of focal brain ischemia was treated with application of periodic acceleration for 3 h immediately after the onset of ischemia. Controls remained static for the same period of time. Brain damage was assessed by magnetic resonance imaging (MRI) and biochemical markers. A significant reduction in brain damage was observed, 7 days post-ischemia, in rocked rats when compared with the static controls, through MRI. Furthermore, rocked animals had significantly lower levels of Beclin 1 and fractin than their static counterparts, and some isoforms of nitric oxide synthase were regulated by periodic acceleration. Our results show that periodic acceleration may provide a novel, affordable, non-invasive therapeutic option for the treatment of stroke.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acceleration*
  • Animals
  • Apoptosis Regulatory Proteins / genetics
  • Apoptosis Regulatory Proteins / metabolism
  • Beclin-1
  • Brain Injuries / etiology*
  • Brain Injuries / metabolism
  • Brain Injuries / pathology
  • Brain Injuries / therapy*
  • Brain Ischemia / chemically induced
  • Brain Ischemia / complications*
  • Brain Ischemia / etiology
  • Caspase 3 / genetics
  • Caspase 3 / metabolism
  • Disease Models, Animal
  • Endothelin-1
  • Exercise Therapy / methods*
  • Gene Expression Regulation / physiology
  • Magnetic Resonance Imaging / methods
  • Male
  • Nitric Oxide Synthase / genetics
  • Nitric Oxide Synthase / metabolism
  • Periodicity
  • Rats
  • Rats, Wistar
  • Time Factors

Substances

  • Apoptosis Regulatory Proteins
  • Beclin-1
  • Becn1 protein, rat
  • Endothelin-1
  • Nitric Oxide Synthase
  • Caspase 3