Validation of the Doubly Labelled Water Method in Subjects With Type 2 Diabetes Mellitus

Diabetes Clinical Trial

— DLW  

Official title:

Estimating Free-living Human Energy Expenditure - Validation of the Doubly Labelled Water Method in Subjects With Type 2 Diabetes Mellitus

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02518581
• Other study ID #: OBDM-03
• Status: Completed
• Phase: N/A
• Start date: August 12, 2015
• Est. completion date: December 23, 2021

Study information

• Verified date: December 2021
• Source: Profil Institut für Stoffwechselforschung GmbH
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The present study is an exploratory trial to establish a feasible DLW (doubly labelled water) protocol for implementation in clinical trials conducted at Profil Institut für Stoffwechselforschung, investigating treatment options for overweight and obesity in populations with and without diabetic comorbidity. The study aims at the practical validation of a 1-2-week DLW protocol in overweight and obese type 2 diabetic subjects.

Total Energy Expenditure (TEE) values as assessed by DLW will then be compared to (1) TEE as calculated based on individual anthropometric measurements (including body composition) using the Müller formula and the AEE (activity related energy expenditure) based on reported work place and leisure time activities and (2) TEE as calculated from measured REE (resting energy expenditure) as assessed by indirect calorimetry and the AEE based on information recorded by the subjects in a physical activity diary and corresponding pedometer counts. Moreover, TEE assessments will be repeated once (separated by 2-4 weeks) to determine intra-subject variability / re-test reliability of the measurement.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 35
• Est. completion date: December 23, 2021
• Est. primary completion date: December 23, 2021
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 64 Years

Eligibility

Inclusion Criteria:

1. Signed informed consent obtained before any trial-related activities.

2. Stable weight +/- 5% for at least 3 months prior screening visit.

3. Male or female subject, 18-64 years of age, both inclusive.

4. Body Mass Index (BMI) >= 25 kg/m2.

5. Type 2 diabetes mellitus (as diagnosed clinically) = 12 months.

6. HbA1c <= 9 % at screening visit.

7. Stable treatment (>= 3 month) with

• Oral antidiabetics (OADs) (except OADs that are associated with a reduction in body weight (a-glucosidase inhibitors, sodium glucose transporter 2-inhibitors (SGLT2))) and/or

• basal insulin injections and/or

• a dietary regimen. Subjects on a basal-bolus insulin regimen will not be enrolled.

8. Considered generally healthy (apart from type 2 diabetes mellitus and with the exception of conditions associated with diabetes mellitus or the metabolic syndrome, such as dyslipidaemia and hypertension) upon completion of medical history, physical examination, vital signs, and analysis of laboratory safety variables, as judged by the Investigator.

Exclusion Criteria:

1. Clinical significant acute illness within 2 weeks before study procedures, including severe infections, as judged by the Investigator.

2. Receipt of any investigational medicinal product within 3 months before trial related procedures.

3. Mental incapacity or language barriers which preclude adequate understanding or cooperation, unwillingness to participate in the trial, known or suspected not to comply with study directives or not to be reliable or trustworthy, or subjects who in the opinion of their general practitioner or the Investigator should not participate in the trial.

4. Use of diuretics.

5. Intake of any other drug or dietary supplement that in the opinion of the Investigator may impair validity of energy expenditure assessments.

6. Clinically significant abnormal biochemistry screening tests, as judged by the Investigator. In particular, elevated liver enzymes (AST or ALT > 3 times the upper limit of normal) or impaired renal function with an estimated Glomerular Filtration Rate (eGFR; estimate after CKD-EP) < 60 ml/min.

7. Clinically significant abnormal electrocardiogram (ECG) findings at screening, as judged by the Investigator.

8. Positive alcohol breath test at screening visit.

9. Significant history of alcoholism or drug abuse as judged by the Investigator or consuming more than 21 units of alcohol per week (one unit of alcohol equals about 330 ml of beer, one glass of wine of 120 ml, or 40 ml spirits).

10. Smoker (defined as a subject who is smoking more than 5 cigarettes or the equivalent per day) who is not able or willing to refrain from smoking and use of nicotine substitute products during the study.

11. Excessive consumption of coffee and tea (i.e. more than 5 cups/day), chocolate or beverages such as cola containing methylxanthine (caffeine, theophylline or theobromine) as judged by the investigator.

12. Females of childbearing potential who are pregnant, breast-feeding or intend to become pregnant or are not using adequate contraceptive methods (adequate contraceptive measures include surgical sterilisation, hormonal intrauterine devices (coil), oral hormonal contraceptives, sexual abstinence or a surgically sterilised partner).

13. Type 1 diabetes mellitus, diabetes resulting from pancreatic injury, or secondary forms of diabetes, e.g., acromegaly or Cushing's syndrome.

14. History of hyperosmolar crisis, diabetic coma, or severe hypoglycemia within the last 3 months prior to trial examinations.

15. Use of weight-loss medication or any non-permitted antidiabetic medication that is associated with a reduction in body weight (a-glucosidase inhibitors, SGLT2-inhibitors) within 3 months before trial examination.

16. Use of injectable anti-diabetic therapy (other than insulin), e.g. GLP-1 receptor agonists (glucagon-like peptide), within 3 months prior to screening.

17. Steroid therapy other than topical application.

Related Conditions & MeSH terms

• Diabetes
• Diabetes Mellitus
• Diabetes Mellitus, Type 2

Intervention

Procedure:
• Doubly labelled water method
DLW (doubly labeled water) method measures isotope dilution spaces and elimination rates to assess total energy expenditure (TEE). After enriching the body water of a subject with DLW (2H and 18O), it is only necessary to collect urine samples at defined time points, usually over a period of 1-2 weeks, so that the measurement can be done in individuals able to engage in their typical habits without restrictions. The resulting TEE measurement represents an integral value over the measurement period.

Locations

Country	Name	City	State
Germany	Profil Institut für Stoffwechselforschung GmbH	Neuss

Sponsors (1)

Lead Sponsor	Collaborator
Profil Institut für Stoffwechselforschung GmbH

Country where clinical trial is conducted

Germany, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Free-living total energy expenditure	Assessed by doubly labelled water	up to 3 month
Primary	Resting energy expenditure	Assessed by indirect calorimetry	up to 3 month
Primary	Activity-induced energy expenditure	Assessed by diary and pedometer	up to 3 month