Erythrocyte and Adipocyte G6PD Activity Levels in Obesity

May 7, 2024 updated by: William Richards, University of South Alabama

Erythrocyte and Adipocyte G6PD Activity Levels Correlate With Differing Degrees of Dyslipidemia, Insulin Resistance and Obesity

This study compares the improvement of weight, fasting lipid profile (triglycerides, cholesterol, HDL, and LDL) and diabetes after gastric bypass surgery with an improvement in levels of an enzyme called glucose-6-phosphate dehydrogenase (G6PD).

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.

Detailed Description

Same as brief summary

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.
Observational

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.
27

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
    • Alabama
      • Mobile, Alabama, United States, 36607
        • Mobile Infirmary Medical Center
      • Mobile, Alabama, United States, 36617
        • University of South Alabama

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

19 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

All patients will be morbidly obese and undergo Roux-en-Y Gastric bypass surgery. Both Type 2 diabetic and non-diabetic patients will be accepted into the study.

Description

Inclusion Criteria:

  • Age > 19 years of age and <70 years of age
  • HGA1c<6.0%
  • fasting blood sugar less than 100mg/dL

Exclusion Criteria:

  • Taking antidiabetic medications for other indications

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

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
Measure Erythrocyte G6PD Levels in Diabetic vs. Non-diabetic Morbidly Obese Patients Undergoing Laparoscopic Gastric Bypass.
Time Frame: G6PD levels will be measured at the following time intervals: Baseline(prior to gastric bypass surgery), 1 week, 6 weeks, and 12 weeks post surgery.
G6PD levels will be measured various time intervals. G6PD is the rate limiting enzyme of the pentose phosphate pathway that provides NADPH required for lipid synthesis. G6PD overexpression is implicated in insulin resistance, hyperlipidemia and increases in oxidative stress.
G6PD levels will be measured at the following time intervals: Baseline(prior to gastric bypass surgery), 1 week, 6 weeks, and 12 weeks post surgery.

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
Measure Adipocyte G6PD Levels in Diabetic vs. Non-diabetic Morbidly Obese Patients Undergoing Laparoscopic Gastric Bypass.
Time Frame: G6PD levels will be measured at the following time intervals: Baseline(prior to gastric bypass surgery), 1 week, 6 weeks, and 12 weeks post surgery.
G6PD levels will be measured various time intervals. G6PD is the rate limiting enzyme of the pentose phosphate pathway that provides NADPH required for lipid synthesis. G6PD overexpression is implicated in insulin resistance, hyperlipidemia and increases in oxidative stress.
G6PD levels will be measured at the following time intervals: Baseline(prior to gastric bypass surgery), 1 week, 6 weeks, and 12 weeks post surgery.
Measure Omentum G6PD Levels in Diabetic vs. Non-diabetic Morbidly Obese Patients Undergoing Laparoscopic Gastric Bypass.
Time Frame: time of gastric bypass
time of gastric bypass
Measure Hepatocyte G6PD Levels in Diabetic vs. Non-diabetic Morbidly Obese Patients Undergoing Laparoscopic Gastric Bypass.
Time Frame: time of gastric bypass
time of gastric bypass

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 South Alabama

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: William O Richards, MD, University of South Alabama, Department of Surgery

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

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.
December 1, 2009

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.
March 1, 2013

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.
March 1, 2013

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 23, 2010

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.
March 23, 2011

First Posted (Estimated)

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.
March 24, 2011

Study Record Updates

Last Update Posted (Actual)

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.
May 16, 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.
May 7, 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.
May 1, 2024

More Information

Terms related to this study

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.
  • 09.0027

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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