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Oxidative Stress, Carbohydrate Metabolism Disorders and G6PD Deficiency

Primary Purpose

G6PD Deficiency, Carbohydrate Metabolism Disorder, Oxidative Stress

Status
Not yet recruiting
Phase
Not Applicable
Locations
Study Type
Interventional
Intervention
Alpha-lipoic acid
Placebo
Sponsored by
University of Thessaly
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for G6PD Deficiency

Eligibility Criteria

18 Years - 65 Years (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

  • Individuals with normal G6PD activity
  • Individuals with G6PD deficiency
  • Individuals with CHO metabolism disorders (diabetes, prediabetes)
  • Individuals with G6PD deficiency and CHO metabolism disorders (diabetes, prediabetes)

Exclusion Criteria:

  • Health problems that contraindicate participation to exercise
  • Should not take any medication that affects the body's antioxidant mechanisms as well as dietary supplements containing antioxidants
  • Women during lactation or gestation

Sites / Locations

    Arms of the Study

    Arm 1

    Arm 2

    Arm 3

    Arm 4

    Arm 5

    Arm 6

    Arm 7

    Arm 8

    Arm Type

    Experimental

    Placebo Comparator

    Experimental

    Placebo Comparator

    Experimental

    Placebo Comparator

    Experimental

    Placebo Comparator

    Arm Label

    G6PD deficiency (only) - Intervention

    G6PD deficiency (only) - Placebo

    G6PD deficiency and CHO metabolism disorder - Intervention

    G6PD deficiency and CHO metabolism disorder - Placebo

    CHO metabolism disorder (only) - Intervention

    CHO metabolism disorder (only) - Placebo

    Controls - Intervention

    Controls - Placebo

    Arm Description

    Alpha-lipoic acid supplementation (600 mg/day) for 4 weeks in a counterbalanced manner to 10 G6PD deficient individuals.

    Placebo administration for 4 weeks in a counterbalanced manner to 120 G6PD deficient individuals.

    Alpha-lipoic acid supplementation (600 mg/day) for 4 weeks in a counterbalanced manner to 10 individuals with G6PD deficiency and a CHO metabolism disorder.

    Placebo for 4 weeks in a counterbalanced manner to 10 individuals with G6PD deficiency and a CHO metabolism disorder.

    Alpha-lipoic acid supplementation (600 mg/day) for 4 weeks in a counterbalanced manner to 10 individuals with a CHO metabolism disorder.

    Placebo for 4 weeks in a counterbalanced manner to 10 individuals with a CHO metabolism disorder.

    Alpha-lipoic acid supplementation (600 mg/day) for 4 weeks in a counterbalanced manner to 10 individuals without G6PD deficiency and/or any CHO metabolism disorder.

    Placebo for 4 weeks in a counterbalanced manner to 10 individuals without G6PD deficiency and/or any CHO metabolism disorder.

    Outcomes

    Primary Outcome Measures

    Changes in total antioxidant capacity following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Index of blood redox status. Spectrophotometric assay for the determination of total antioxidant capacity using DPPH method.
    Changes in glutathione following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Index of blood redox status. Spectrophotometric assay for the determination of total antioxidant capacity using DTNB method.
    Changes in uric acid following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Index of blood redox status. Spectrophotometric assay for the determination of total antioxidant capacity using a clinical chemistry analyzer with commercially available kits.
    Changes in bilirubin following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Index of blood redox status. Spectrophotometric assay for the determination of bilirubin using a clinical chemistry analyzer with commercially available kits.
    Changes in lipid peroxidation following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Index of blood redox status. Determination of lipid peroxidation using malondialdehyde production assessment.
    Changes in protein carbonyls following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Index of blood redox status. Spectrophotometric assay for the determination of total antioxidant capacity using DNPH method.
    Changes in blood lipids following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Blood lipids (total cholesterol, LDL-c, HDH-c, triglycerides). Spectrophotometric assays for the determination of blood lipids using a clinical chemistry analyzer with commercially available kits.
    Changes in insulin resistance following 4 weeks of supplementation and placebo.
    Measurement of blood glucose and insulin levels to assess HOMA-IR and evaluate insulin resistance. Spectrophotometric assay for the determination of blood glucose using a clinical chemistry analyzer with commercially available kits.Determination of blood insulin using commercially available Eliza kits.
    Changes in glycated hemoglobin (HbA1c) following 4 weeks of supplementation and placebo.
    Measurement of HbA1c using commercially available kits.

    Secondary Outcome Measures

    Changes in body composition following 4 weeks of intervention and placebo.
    Body fat mass (in kg) and percentage, lean mass (in kg) and percentage
    Changes in body mass index following 4 weeks of intervention and placebo.
    Body mass (in kg) and height (in cm)
    Changes in resting heart rate following 4 weeks of intervention and placebo.
    Resting heart rate (beats per minute) measurement after at least 5 minutes at rest
    Changes in blood pressure following 4 weeks of intervention and placebo.
    Measurement of (systolic and diastolic) blood pressure (in mm Hg) after at least 5 minutes at rest
    Changes in waist-to-hip ratio following 4 weeks of intervention and placebo.
    Measurement of waist and hip circumference to calculate waist-to-hip ratio
    Changes in complete blood count following 4 weeks of intervention and placebo.
    Complete blood count
    Changes in psychometric test following 4 weeks of intervention and placebo.
    Hospital Anxiety Depression Scale-HADS (Greek version)
    Trial of VO2peak estimation.
    VO2peak (mL/kg body weight/min) estimation with a treadmill protocol.
    Nicotinamide-adenine dinucleotide phosphate (NADPH)
    Spectrophotometric assay for the determination of NADPH in erythrocytes.
    Glutathione Reductase (GR)
    Spectrophotometric assay for the determination of GR in erythrocytes.
    Glutathione peroxidase (GPx)
    Spectrophotometric assay for the determination of GPx in erythrocytes.
    Superoxide dismutases (SOD)
    Spectrophotometric assay for the determination of SOD in erythrocytes.
    Glucose Tolerance Test (GTT)
    GTT for the investigation of changes in glucose control.
    G6PD enzyme activity in erythrocytes
    Quantification of G6PD activity in erythrocytes (units/gram of hemoglobin) of all participants using a commercially available kit.

    Full Information

    First Posted
    May 28, 2022
    Last Updated
    January 2, 2023
    Sponsor
    University of Thessaly
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    1. Study Identification

    Unique Protocol Identification Number
    NCT05571748
    Brief Title
    Oxidative Stress, Carbohydrate Metabolism Disorders and G6PD Deficiency
    Official Title
    The Association Between Oxidative Stress and Carbohydrate Metabolism Disorders in G6PD Deficient Individuals
    Study Type
    Interventional

    2. Study Status

    Record Verification Date
    January 2023
    Overall Recruitment Status
    Not yet recruiting
    Study Start Date
    February 2023 (Anticipated)
    Primary Completion Date
    March 2023 (Anticipated)
    Study Completion Date
    June 2023 (Anticipated)

    3. Sponsor/Collaborators

    Responsible Party, by Official Title
    Principal Investigator
    Name of the Sponsor
    University of Thessaly

    4. Oversight

    Studies a U.S. FDA-regulated Drug Product
    No
    Studies a U.S. FDA-regulated Device Product
    No

    5. Study Description

    Brief Summary
    The purpose of this study is to investigate the effects of alpha-lipoic acid supplementation on redox status, physiological and biochemical parameters in diabetic individuals with G6PD deficiency, after acute exercise.
    Detailed Description
    In a randomized double-blind, crossover design, a total of forty people will participate in the research voluntarily: (a) ten people with G6PD (Mediterranean type) enzyme deficiency), (b) ten people with G6PD (Mediterranean type) enzyme deficiency and a disorder of carbohydrate metabolism (diabetes, prediabetes), (c) ten people with a disorder of carbohydrate metabolism (diabetes mellitus and prediabetes) and, (d) ten people without any health problem (control group). They will be supplemented with either 600 mg of alpha-lipoic acid (experimental condition) or placebo (control condition) every day for 4 weeks, separated by a 4-week washout period. All participants will be randomly assigned to both conditions. Before intervention, all participants will be informed about the study protocol, fill a medical history questionnaire and sign an informed consent form. Moreover, measurements of anthropometric characteristics and physiological parameters, as well as a VO2peak test will be performed. Participants will perform a trial of exercise (70% VO2peak for 45min and 90% till exhaustion) before and after each condition (i.e. a total of 4 trials). Blood samples will be collected before, immediately after and 1 hour after each exercise trial. Moreover, measurements of anthropometric characteristics, physiological and psychological parameters will be performed before and after each condition.

    6. Conditions and Keywords

    Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
    G6PD Deficiency, Carbohydrate Metabolism Disorder, Oxidative Stress

    7. Study Design

    Primary Purpose
    Treatment
    Study Phase
    Not Applicable
    Interventional Study Model
    Crossover Assignment
    Masking
    ParticipantCare ProviderInvestigatorOutcomes Assessor
    Allocation
    Randomized
    Enrollment
    40 (Anticipated)

    8. Arms, Groups, and Interventions

    Arm Title
    G6PD deficiency (only) - Intervention
    Arm Type
    Experimental
    Arm Description
    Alpha-lipoic acid supplementation (600 mg/day) for 4 weeks in a counterbalanced manner to 10 G6PD deficient individuals.
    Arm Title
    G6PD deficiency (only) - Placebo
    Arm Type
    Placebo Comparator
    Arm Description
    Placebo administration for 4 weeks in a counterbalanced manner to 120 G6PD deficient individuals.
    Arm Title
    G6PD deficiency and CHO metabolism disorder - Intervention
    Arm Type
    Experimental
    Arm Description
    Alpha-lipoic acid supplementation (600 mg/day) for 4 weeks in a counterbalanced manner to 10 individuals with G6PD deficiency and a CHO metabolism disorder.
    Arm Title
    G6PD deficiency and CHO metabolism disorder - Placebo
    Arm Type
    Placebo Comparator
    Arm Description
    Placebo for 4 weeks in a counterbalanced manner to 10 individuals with G6PD deficiency and a CHO metabolism disorder.
    Arm Title
    CHO metabolism disorder (only) - Intervention
    Arm Type
    Experimental
    Arm Description
    Alpha-lipoic acid supplementation (600 mg/day) for 4 weeks in a counterbalanced manner to 10 individuals with a CHO metabolism disorder.
    Arm Title
    CHO metabolism disorder (only) - Placebo
    Arm Type
    Placebo Comparator
    Arm Description
    Placebo for 4 weeks in a counterbalanced manner to 10 individuals with a CHO metabolism disorder.
    Arm Title
    Controls - Intervention
    Arm Type
    Experimental
    Arm Description
    Alpha-lipoic acid supplementation (600 mg/day) for 4 weeks in a counterbalanced manner to 10 individuals without G6PD deficiency and/or any CHO metabolism disorder.
    Arm Title
    Controls - Placebo
    Arm Type
    Placebo Comparator
    Arm Description
    Placebo for 4 weeks in a counterbalanced manner to 10 individuals without G6PD deficiency and/or any CHO metabolism disorder.
    Intervention Type
    Dietary Supplement
    Intervention Name(s)
    Alpha-lipoic acid
    Other Intervention Name(s)
    Physical exercise
    Intervention Description
    A trial of acute exercise before and after 4 weeks of alpha-lipoic acid supplementation.
    Intervention Type
    Other
    Intervention Name(s)
    Placebo
    Other Intervention Name(s)
    Physical exercise
    Intervention Description
    A trial of acute exercise before and after 4 weeks of placebo supplementation.
    Primary Outcome Measure Information:
    Title
    Changes in total antioxidant capacity following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Description
    Index of blood redox status. Spectrophotometric assay for the determination of total antioxidant capacity using DPPH method.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Changes in glutathione following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Description
    Index of blood redox status. Spectrophotometric assay for the determination of total antioxidant capacity using DTNB method.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Changes in uric acid following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Description
    Index of blood redox status. Spectrophotometric assay for the determination of total antioxidant capacity using a clinical chemistry analyzer with commercially available kits.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Changes in bilirubin following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Description
    Index of blood redox status. Spectrophotometric assay for the determination of bilirubin using a clinical chemistry analyzer with commercially available kits.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Changes in lipid peroxidation following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Description
    Index of blood redox status. Determination of lipid peroxidation using malondialdehyde production assessment.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Changes in protein carbonyls following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Description
    Index of blood redox status. Spectrophotometric assay for the determination of total antioxidant capacity using DNPH method.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Changes in blood lipids following 4 weeks of supplementation and placebo at rest and following a trial of acute exercise.
    Description
    Blood lipids (total cholesterol, LDL-c, HDH-c, triglycerides). Spectrophotometric assays for the determination of blood lipids using a clinical chemistry analyzer with commercially available kits.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Changes in insulin resistance following 4 weeks of supplementation and placebo.
    Description
    Measurement of blood glucose and insulin levels to assess HOMA-IR and evaluate insulin resistance. Spectrophotometric assay for the determination of blood glucose using a clinical chemistry analyzer with commercially available kits.Determination of blood insulin using commercially available Eliza kits.
    Time Frame
    Before and following 4 weeks of supplementation and placebo.
    Title
    Changes in glycated hemoglobin (HbA1c) following 4 weeks of supplementation and placebo.
    Description
    Measurement of HbA1c using commercially available kits.
    Time Frame
    Before and following 4 weeks of supplementation and placebo.
    Secondary Outcome Measure Information:
    Title
    Changes in body composition following 4 weeks of intervention and placebo.
    Description
    Body fat mass (in kg) and percentage, lean mass (in kg) and percentage
    Time Frame
    Before and following 4 weeks of supplementation and placebo.
    Title
    Changes in body mass index following 4 weeks of intervention and placebo.
    Description
    Body mass (in kg) and height (in cm)
    Time Frame
    Before and following 4 weeks of supplementation and placebo.
    Title
    Changes in resting heart rate following 4 weeks of intervention and placebo.
    Description
    Resting heart rate (beats per minute) measurement after at least 5 minutes at rest
    Time Frame
    Before and following 4 weeks of supplementation and placebo.
    Title
    Changes in blood pressure following 4 weeks of intervention and placebo.
    Description
    Measurement of (systolic and diastolic) blood pressure (in mm Hg) after at least 5 minutes at rest
    Time Frame
    Before and following 4 weeks of supplementation and placebo.
    Title
    Changes in waist-to-hip ratio following 4 weeks of intervention and placebo.
    Description
    Measurement of waist and hip circumference to calculate waist-to-hip ratio
    Time Frame
    Before and following 4 weeks of supplementation and placebo.
    Title
    Changes in complete blood count following 4 weeks of intervention and placebo.
    Description
    Complete blood count
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Changes in psychometric test following 4 weeks of intervention and placebo.
    Description
    Hospital Anxiety Depression Scale-HADS (Greek version)
    Time Frame
    Before and following 4 weeks of supplementation and placebo.
    Title
    Trial of VO2peak estimation.
    Description
    VO2peak (mL/kg body weight/min) estimation with a treadmill protocol.
    Time Frame
    Before intervention.
    Title
    Nicotinamide-adenine dinucleotide phosphate (NADPH)
    Description
    Spectrophotometric assay for the determination of NADPH in erythrocytes.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Glutathione Reductase (GR)
    Description
    Spectrophotometric assay for the determination of GR in erythrocytes.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Glutathione peroxidase (GPx)
    Description
    Spectrophotometric assay for the determination of GPx in erythrocytes.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Superoxide dismutases (SOD)
    Description
    Spectrophotometric assay for the determination of SOD in erythrocytes.
    Time Frame
    Before, immediately after and 1 hour after each trial of exercise, in both conditions (supplement and placebo)
    Title
    Glucose Tolerance Test (GTT)
    Description
    GTT for the investigation of changes in glucose control.
    Time Frame
    Before intervention (blood samples at 0, 30, 60, 90 and 120 minutes after intake of 75 g glucose).
    Title
    G6PD enzyme activity in erythrocytes
    Description
    Quantification of G6PD activity in erythrocytes (units/gram of hemoglobin) of all participants using a commercially available kit.
    Time Frame
    Before intervention. During GTT (blood samples at 0, 30, 60, 90 and 120 minutes after intake of 75 g glucose). Also before, immediately after and 1, 2, 24 hours after each trial of exercise, in both conditions (supplement and placebo).

    10. Eligibility

    Sex
    All
    Minimum Age & Unit of Time
    18 Years
    Maximum Age & Unit of Time
    65 Years
    Accepts Healthy Volunteers
    Accepts Healthy Volunteers
    Eligibility Criteria
    Inclusion Criteria: Individuals with normal G6PD activity Individuals with G6PD deficiency Individuals with CHO metabolism disorders (diabetes, prediabetes) Individuals with G6PD deficiency and CHO metabolism disorders (diabetes, prediabetes) Exclusion Criteria: Health problems that contraindicate participation to exercise Should not take any medication that affects the body's antioxidant mechanisms as well as dietary supplements containing antioxidants Women during lactation or gestation
    Central Contact Person:
    First Name & Middle Initial & Last Name or Official Title & Degree
    Athanasios Z Jamurtas, PhD
    Phone
    2431047054
    Ext
    +30
    Email
    ajamurt@pe.uth.gr
    First Name & Middle Initial & Last Name or Official Title & Degree
    Athanasios Gatsas, MSc
    Phone
    6971559250
    Ext
    +30
    Email
    t.gatsas@yahoo.gr
    Overall Study Officials:
    First Name & Middle Initial & Last Name & Degree
    Athanasios Z Jamurtas, PhD
    Organizational Affiliation
    University of Thessaly
    Official's Role
    Study Director

    12. IPD Sharing Statement

    Citations:
    PubMed Identifier
    23416142
    Citation
    Georgakouli K, Deli CK, Zalavras A, Fatouros IG, Kouretas D, Koutedakis Y, Jamurtas AZ. Alpha-lipoic acid supplementation up-regulates antioxidant capacity in adults with G6PD deficiency. Food Chem Toxicol. 2013 Nov;61:69-73. doi: 10.1016/j.fct.2013.01.055. Epub 2013 Feb 14.
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    Oxidative Stress, Carbohydrate Metabolism Disorders and G6PD Deficiency

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