Impact of COPD on Muscle Regeneration

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Total Enrollment

27 participants

Study Classification

OBSERVATIONAL

Study Start Date

2011-01-31

Study Completion Date

2015-12-31

Brief Summary

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Muscle weakness and atrophy are important consequences of chronic obstructive pulmonary disease (COPD) and can affect both respiratory and peripheral muscles. Impaired muscle regeneration is thought to be implicated in the process of muscle atrophy. In this study the investigators will evaluate muscle regenerative potential of the Vastus Lateralis (VL) and diaphragm of patients with COPD, compared to patients with normal lung function.

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Detailed Description

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Preliminary results suggest that the activation and differentiation processes of satellite cells isolated from the VL of patients with COPD could be altered. The investigators propose to compare the regenerative potential of the VL and the diaphragm in 15 patients with COPD and 15 individuals with normal lung function undergoing a thoracic surgery. From muscle biopsies, satellite cells will be isolated and cultured to assess their proliferation and differentiation rates, and the expression level of myogenic effectors (MyoD, Myf5, myogenin, and MRF4). Alterations in these measurements will confirm the hypotheses that the regenerative potential is lower in both muscle groups in patients with COPD compared to controls and that in COPD, the regenerative potential is lower in VL compared to the diaphragm.

Conditions

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COPD

Study Design

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Observational Model Type

CASE_CROSSOVER

Study Time Perspective

PROSPECTIVE

Study Groups

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COPD patients

Patients with mild to moderate COPD having a scheduled lung surgery. Vastus lateralis and diaphragm muscle biopsies performed during surgery

Muscle biopsies

Intervention Type PROCEDURE

Muscle biopsies will allow acces to samples for observational studies. Vastus latetalis: needle biopsy (Bergstrom technique). Diaphragm: open biopsy performed by thoracic surgeon during lung surgery.

Patients with normal lung function

Patients with normal lung function having a scheduled lung surgery. Vastus lateralis and diaphragm muscle biopsies performed during surgery.

Muscle biopsies

Intervention Type PROCEDURE

Muscle biopsies will allow acces to samples for observational studies. Vastus latetalis: needle biopsy (Bergstrom technique). Diaphragm: open biopsy performed by thoracic surgeon during lung surgery.

Interventions

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Muscle biopsies

Muscle biopsies will allow acces to samples for observational studies. Vastus latetalis: needle biopsy (Bergstrom technique). Diaphragm: open biopsy performed by thoracic surgeon during lung surgery.

Intervention Type PROCEDURE