- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04256343
D2O Dosing Strategies to Assess Muscle Protein Synthesis (D2O-MPS)
March 13, 2023 updated by: Stuart Phillips, McMaster University
The Sensitivity of Differing D2O Dosing Strategies and Mass Spectrometry-based Analytical Techniques to Determine Rates of Muscle Protein Synthesis in Young Men and Women
Skeletal muscle mass is regulated by the balance of muscle protein synthesis (MPS) and muscle protein breakdown (MPB).
MPS is sensitive to exogenous stimuli, particularly exercise and protein ingestion.
Much of what the investigators currently know about the impact of exercise and protein feeding on MPS has been derived from acute stable isotopic tracers in a controlled laboratory setting.
However, recently, the field of skeletal muscle protein metabolism has moved towards the use of deuterium oxide (deuterated water (D2O)) to measure MPS.
The ease of administration and the scope to measure turnover in a range of substrates whilst negating the need for strictly controlled laboratory settings makes D2O the ideal candidate to provide a more holistic view of in vivo skeletal muscle metabolism.
Study Overview
Detailed Description
Currently, there is a lack of consensus amongst researchers regarding the dosing strategies of D2O provision for measuring fraction-specific (myofibrillar, mitochondrial and sarcoplasmic) protein synthetic rates.
In addition, the analytical equipment (i.e., mass spectrometers) required to carry out the analysis of skeletal muscle-bound alanine are technically challenging, offer varying degrees of sensitivity that may drastically influence outcome measures and the expense of analysis differs greatly between the type of mass spectrometer required.Thus, this study will employ different D2O doses to assess basal and exercise plus protein feeding-induced rates of acute and integrated MPS in healthy young men and women.
This will provide researchers with insight into the amount of D2O required to accurately assess MPS and the sensitivity of the analytical machine employed.
Study Type
Interventional
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
- Name: James McKendry, Ph.D.
- Phone Number: (365) 888-2291
- Email: mckendrj@mcmaster.ca
Study Contact Backup
- Name: Tanner Stokes, B.Sc.
- Phone Number: (289) 680-1900
- Email: stokest@mcmaster.ca
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 to 35 years (Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Men and women, between the ages of 18 - 35 years (inclusive)
- Have a body mass index (BMI) between 18-30 kg·m2 (inclusive)
- Be in general good health as assessed by a general health questionnaire
- Non-smoking
- Willing and able to provide informed consent
Exclusion Criteria:
- Ingestion of deuterated water (D2O) in the previous ~6 months.
- Routine/daily usage of non-steroidal anti-inflammatory drugs (NSAIDS, prescription use or daily use of over the counter medication), use of corticosteroids, testosterone replacement therapy (ingestion, injection, or transdermal), any anabolic steroid, creatine, whey protein supplements, casein or branched-chain amino acids (BCAAs) within 45 days prior to screening.
- Use of tobacco or related products.
- Veganism or vegetarianism
- Any concurrent medical, orthopedic, or psychiatric condition that, in the opinion of the Investigator, would compromise his/her ability to comply with the study requirements.
- Use assistive walking devices (e.g., cane or walker)
- History of cancer within the last 5 years, except basal cell carcinoma, non-squamous skin carcinoma, prostate cancer or carcinoma in situ with no significant progression over the past 2 years.
- Significant orthopedic, cardiovascular, pulmonary, renal, liver, infectious disease, immune disorder, or metabolic/endocrine disorders or other disease that would preclude oral protein supplement ingestion and/or assessment of safety and study objectives.
- Any cachexia-related condition (e.g., relating to cancer, tuberculosis or human immunodeficiency virus infection and acquired immune deficiency syndrome) or any genetic muscle diseases or disorders
- Current illnesses which could interfere with the study (e.g. prolonged severe diarrhea, regurgitation, difficulty swallowing)
- Hypersensitivity or known allergy to any of the components in the test formulations.
- Excessive alcohol consumption (>21 units/week)
- History of bleeding diathesis, platelet or coagulation disorders, or antiplatelet/anticoagulation therapy (up to 81mg of baby aspirin per day taken as a prophylactic is permitted).
- History of statin myalgia.
- Personal or family history of clotting disorder or deep vein thrombosis.
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: Other
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: D2O Dose 1
Lower dose of D2O for MPS
|
1 of 3 differing deuterium oxide (D2O) doses will provided to each of the participants to be consumed daily to assess muscle protein synthesis.
|
Experimental: D2O Dose 2
Moderate dose of D2O MPS
|
1 of 3 differing deuterium oxide (D2O) doses will provided to each of the participants to be consumed daily to assess muscle protein synthesis.
|
Experimental: D2O Dose 3
Higher dose of D2O for MPS
|
1 of 3 differing deuterium oxide (D2O) doses will provided to each of the participants to be consumed daily to assess muscle protein synthesis.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Muscle protein synthesis
Time Frame: 7 days
|
this study will employ different D2O doses to assess basal and exercise plus protein feeding-induced rates of acute and integrated MPS in healthy young men and women.
|
7 days
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Stuart M Phillips, Ph.D., McMaster University
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 (Anticipated)
May 1, 2020
Primary Completion (Anticipated)
December 31, 2020
Study Completion (Anticipated)
June 1, 2021
Study Registration Dates
First Submitted
February 3, 2020
First Submitted That Met QC Criteria
February 4, 2020
First Posted (Actual)
February 5, 2020
Study Record Updates
Last Update Posted (Actual)
March 15, 2023
Last Update Submitted That Met QC Criteria
March 13, 2023
Last Verified
February 1, 2020
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 8300
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
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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