Study of the Function and Muscle Metabolism in Drepanocytose Affected Patient During a Moderate Intensity Exercise

August 17, 2016 updated by: Assistance Publique Hopitaux De Marseille

Drepanocytose disease is the first genetic disease in the world. It results in the synthesis of an abnormal hemoglobin (HbS), which in its deoxygenated form, polymerizes and leads to structural changes of red blood cells (RBC) which then take the shape of a sickle, become more fragile, more rigid and less deformable. The fragility of GR sickle causes their mass destruction, leading to chronic anemia (i.e. low levels of GR in the blood) associated with low tissue oxygenation. More rigid and less deformable, sickle GR tend to hang in the microvessels, leading to vaso-occlusive crises (CVO) particularly painful, can cause the failure of certain organs (spleen, kidneys, brain, lung, heart, liver , bone ...) and to life-threatening patients. Preliminary studies conducted on patients with drepanocytose disease (HbSS) have demonstrated changes of muscle tissue indicating a possible failure in the supply and use of oxygen. To date, the translation of this metabolic remodeling in the muscle work is not known.

This project's main objective is to evaluate muscle function in drepanocytose attempted patients. We hypothesized that muscle remodeling associated with sickle cell disease have a functional impact on strength and muscle metabolism. The main objective is to characterize the maximal voluntary plantar flexor muscles. The criteria for these targets will be based on the comparison between healthy subjects, carriers of the sickle cell trait (HbAS) and sickle cell patients (HbSS) oxygen saturation.

The strictly non-invasive approach proposed in this project will study the functional parameters of the muscle of sickle cell disease and the possible link with the clinical manifestations of the disease, including vaso-occlusive crisis, in which tissue oxygenation and pH plays a major role.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

45

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patient affected by sickel cells and healthy volonteers presenting no contre indication to spectrometry exam.

Exclusion Criteria:

  • Patient affected by hemoglobinopathies other than drepanocytose

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Healthy volunteers
Other: Spectroscopy magnetic resonance of phosphorus 31
Experimental: drepanocytose affected patient
Other: Spectroscopy magnetic resonance of phosphorus 31

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Percentage of phosphorus 31released during muscle exercise assesses by magnetic resonance spectroscopy
Time Frame: 2 hours
2 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Assistance Publique Hopitaux De Marseille

Investigators

  • Principal Investigator: Jean-Pierre MATTEI, Md, Assistance Publique Hopitaux de Marseille

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2015

Primary Completion (Anticipated)

July 1, 2018

Study Completion (Anticipated)

July 1, 2019

Study Registration Dates

First Submitted

August 17, 2016

First Submitted That Met QC Criteria

August 17, 2016

First Posted (Estimate)

August 22, 2016

Study Record Updates

Last Update Posted (Estimate)

August 22, 2016

Last Update Submitted That Met QC Criteria

August 17, 2016

Last Verified

August 1, 2016

More Information

Terms related to this study

Other Study ID Numbers

  • 2014-39
  • 2014-A01486-41 (Other Identifier: Ansm)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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