Effect of High Carbohydrate vs. Low Carbohydrate Diet in Type 2 Diabetes

February 28, 2024 updated by: Rita Basu, University of Alabama at Birmingham

Role of Hepatic Glycogen on Nocturnal EGP in T2D

The experimental approach in this study intends to investigate the role of hepatic glycogen content on nocturnal regulation of endogenous glucose production including the relative contributions of glycogenolysis and gluconeogenesis and the extent to which this differs between subjects with type 2 diabetes and subjects without diabetes. Both participants with type 2 diabetes and participants without diabetes will be studied after consuming either a low carbohydrate (no glycogen loading) or high carbohydrate (glycogen loading) diet.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Physiology study for looking at glycogen loading vs non loading in improving nightime glucose tolerance by increasing glycogen in liver and resulting higher glycogenolysis at night.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
34

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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 Locations

  • United States
    • Virginia
      • Charlottesville, Virginia, United States, 22908
        • University of Virginia

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

30 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Age 30-75
  • BMI 20-35kg/m^2

  • Participants with type 2 diabetes:

    • HbA1c less than or equal to 8.5% on lifestyle therapy or monotherapy with metformin or sulphonylureas (SU); or less than or equal to 7.5% on two oral hypoglycemic agents (Metformin and SU)

Exclusion Criteria:

  • Pregnancy or breast feeding
  • Morbidities precluding participation

  • Participants with type 2 diabetes:

    • Therapy with insulin
    • SGLT2 inhibitors
    • GLP-1 based approaches
    • TZDs
    • Unstable diabetic retinopathy
    • Microalbuminuria
    • Macrovascular disease
    • Medications affecting GI motility (eg., erythromycin, pramlintide)
    • Upper GI disorder/surgery

  • Participants without diabetes:

    • Medications (except stable thyroid hormone or hormone replacement therapy) that could influence glucose tolerance
    • History of diabetes mellitus in first degree family members or prior history of diabetes mellitus or gestational diabetes, or pre-diabetes

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: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Type 2 diabetes
Participants with Type 2 Diabetes received Glycogen loading (GL) and Non-Glycogen loading (NGL) meal in a randomized manner.
Other: glycogen loading
Subjects will consume an isocaloric diet [60% carbs, 20% protein, 20% fat (33 kcal/kg/day)] for 3 days prior to the overnight study.
Other: No Glycogen Loading
Subjects will consume an isocaloric diet [40% carbs, 20% protein, 40% fat (33 kcal/kg/day)] for 3 days prior to the overnight study.
Experimental: Participants without diabetes
Participants with no Diabetes received Glycogen loading (GL) and Non-Glycogen loading (NGL) meal in a randomized manner.
Other: glycogen loading
Subjects will consume an isocaloric diet [60% carbs, 20% protein, 20% fat (33 kcal/kg/day)] for 3 days prior to the overnight study.
Other: No Glycogen Loading
Subjects will consume an isocaloric diet [40% carbs, 20% protein, 40% fat (33 kcal/kg/day)] for 3 days prior to the overnight study.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Hepatic Glycogen Content and Rates of Gluconeogenesis in Subjects With Type 2 Diabetes
Time Frame: Subjects will complete both glycogen loading and no glycogen loading visits within approximately 6 weeks
We measured the rates and contribution of Gluconeogenesis (GNG) to nocturnal Endogenous Glucose Production (EGP) using the deuterated water technique after either glycogen loading or no glycogen loading in subjects with type 2 diabetes.
Subjects will complete both glycogen loading and no glycogen loading visits within approximately 6 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Rates of Glycogenolysis in Subjects With Type 2 Diabetes
Time Frame: Subjects will complete both glycogen loading and no glycogen loading visits within approximately 6 weeks
Rates and contribution of glycogenolysis (GLY) to nocturnal EGP will be measured using the deuterated water technique after glycogen loading and no glycogen loading in subjects with type 2 diabetes.
Subjects will complete both glycogen loading and no glycogen loading visits within approximately 6 weeks
Rates of Gluconeogenesis in Healthy Subjects
Time Frame: Subjects will complete both glycogen loading and no glycogen loading visits within approximately 6 weeks
Rates of GNG will be measured through the night using the deuterated water technique after either glycogen loading or no glycogen loading in healthy subjects.
Subjects will complete both glycogen loading and no glycogen loading visits within approximately 6 weeks

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Alabama at Birmingham

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Mayo Clinic
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 21, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 15, 2022

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 15, 2023

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 1, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 1, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 4, 2020

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 1, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 28, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 22074
  • R01DK029953 (U.S. NIH Grant/Contract)

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.

Clinical Trials on Diabetes Mellitus, Type 2

Clinical Trials on glycogen loading

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings