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Mechanical Bone Stimulation and Adenosine 5'-Triphosphate (ATP) Release in Humans

2014-08-27 03:13:26 | BioPortfolio

Summary

Rationale: Mechanical loading is well-known to have a strong anabolic effect on bone. It has therefore been proposed that a mechanical intervention could be an effective non-pharmacological approach to treat bone loss associated with conditions such as osteopenia and osteoporosis. Data from in vitro experiments indicate that the purine nucleotide adenosine 5'-triphosphate (ATP) is released by bone cells and mediates cellular crosstalk via P2 purinergic receptors in response to mechanical stimulation. ATP release by bone cells may thus be part of a general mechanism by which mechanical loading ultimately results in increased bone formation, but this remains to be investigated in humans in vivo. The investigators hypothesize that a mechanical intervention in humans leads to a rise in systemic ATP concentrations due to ATP release from bone.

Objective: To investigate in vivo whether a measurable increase in systemic ATP levels occurs in response to mechanical stimulation of bone in humans.

Study design: Intervention study with a non-randomized, non-blinded design. All subjects will participate in a single experiment, lasting approximately 3 hours, during which the subjects will receive a mechanical intervention at a fixed dose.

Study population: Maximally 10 healthy human volunteers (18-35 y). Intervention: Subjects will receive a gentle and safe mechanical intervention, which will be administered by means of a Juvent 1000 Vibration Platform delivering low-magnitude mechanical stimuli (i.e. vibrations) to the forearm. The mechanical stimulation will be administered at a frequency of 90 Hz and amplitude of 10 µm in an intermittent fashion, i.e. three 10-minute periods of stimulation with 10-minute rest periods in between.

Main outcome parameters: As the primary outcome parameter, a change in extracellular ATP concentrations as a result of the mechanical intervention will be assessed systemically.

Study Design

Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Pharmacokinetics Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Basic Science

Conditions

Osteoporosis

Intervention

Juvent 1000 Vibration Platform

Location

Maastricht University Medical Center
Maastricht
Netherlands
6200 MD

Status

Not yet recruiting

Source

Maastricht University Medical Center

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:13:26-0400

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