Oleanolic Acid as Therapeutic Adjuvant for Type 2 Diabetes Mellitus (OLTRAD STUDY) (OLTRAD)
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ClinicalTrials.gov Identifier: NCT06030544 |
Recruitment Status :
Recruiting
First Posted : September 11, 2023
Last Update Posted : September 11, 2023
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Condition or disease | Intervention/treatment | Phase |
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Diabetic Patients Type II Diabetes Mellitus | Dietary Supplement: OA-enriched functional olive oil Dietary Supplement: commercial olive oil | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 100 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | prospective, parallel group, randomized, double-blind, controlled trial |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Masking Description: | Both the OA-enriched olive oil and the control oil will be delivered labeled with alphanumeric codes, the correspondence of which will only be known by the Dr. Jose M. Castellano (Principal Investigator 1). This ensures blinding of the other researchers and trial participants with respect to the type of olive oil assigned. |
Primary Purpose: | Treatment |
Official Title: | Oleanolic Acid as Therapeutic Adjuvant for Type 2 Diabetes Mellitus (OLTRAD STUDY) |
Actual Study Start Date : | February 25, 2022 |
Estimated Primary Completion Date : | December 30, 2024 |
Estimated Study Completion Date : | June 30, 2025 |
Arm | Intervention/treatment |
---|---|
Experimental: OA-enriched functional olive oil
Functional olive oil elaborated enriching the control olive oil with high purity (> 95 %) Oleanolic acid from olive leaf up to 600 mg OA/kg oil.
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Dietary Supplement: OA-enriched functional olive oil
Dietary intervention in diabetic patients. Oral intake of 55 mL/day of a functional olive oil enriched in Oleanolic acid (equivalent dose 30 mg/day OA) Oleanolic acid (CAS no. 598-02-1; PubChem CID 10494).
Other Name: Functional olive oil enriched in Oleanolic acid |
Active Comparator: Control olive oil
Commercial olive oil (blend of virgin and refined olive oils) chosen by its very low content of bioactive minor components.
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Dietary Supplement: commercial olive oil
Dietary intervention in diabetic patients. Oral intake of 55 mL/day of a commercial olive oil (blend of virgin and refined olive oils) chosen by its very low content of bioactive minor components.
Other Name: control olive oil |
- HbA1c [ Time Frame: 1 year ]The primary outcome of the trial is the evaluation of the glycemic control, assessed through the evolution of the plasma glycosylated hemoglobin (HbA1c) level, expressed in %
- Body weight [ Time Frame: 1 year ]Body weight (expressed in kilograms, kg) wil be determined using a TANITA® model BC-418MA body composition analyzer.
- Body height [ Time Frame: 1 year ]The body height (expressed in meters, m) will be determined by using an approved column stadiometer
- Body mass index (BMI) [ Time Frame: 1 year ]body weight and height will be combined to report BMI in kg/m^2, according to the equation BMI = body mass/(height)^2
- Waist circumference [ Time Frame: 1 year ]Waist circumference (expressed in centimeters, cm) will be measured with a measuring tape
- Hip circumference [ Time Frame: 1 year ]Hip circumference (expressed in centimeters, cm) will be measured with a measuring tape
- Body composition - fat mass [ Time Frame: 1 year ]Fat mass (expressed in kilograms, kg) will be measured using a TANITA® (model BC-418MA) body composition analyzer. Quantification will be made using validated prediction equations adjusted for age and sex.
- Body composition - visceral fat mass [ Time Frame: 1 year ]Visceral fat mass (expressed in kilograms, kg) will be measured using a TANITA® (model BC-418MA) body composition analyzer. Quantification will be made using validated prediction equations adjusted for age and sex.
- Body composition - lean mass [ Time Frame: 1 year ]Lean mass (expressed in kilograms, kg) will be measured using a TANITA® (model BC-418MA) body composition analyzer. Quantification will be made using validated prediction equations adjusted for age and sex.
- Body composition - muscle mass [ Time Frame: 1 year ]Muscle mass (expressed in kilograms, kg) will be measured using a TANITA® (model BC-418MA) body composition analyzer. Quantification will be made using validated prediction equations adjusted for age and sex.
- Body composition - bone mass [ Time Frame: 1 year ]Bone mass (expressed in kilograms, kg) will be measured using a TANITA® (model BC-418MA) body composition analyzer. Quantification will be made using validated prediction equations adjusted for age and sex.
- Body composition - total water composition [ Time Frame: 1 year ]Total water composition (expressed in litre, L) will be measured using a TANITA® (model BC-418MA) body composition analyzer. Quantification will be made using validated prediction equations adjusted for age and sex.
- Basal metabolism [ Time Frame: 1 year ]Basal metabolism (expressed in kilojoule, kJ) will be measured using a TANITA® (model BC-418MA) body composition analyzer. Quantification will be made using validated prediction equations adjusted for age and sex.
- Diastolic blood pressure (DBP) [ Time Frame: 1 year ]DBP (expressed in milimeters of mercury) using a calibrated automatic sphygmomanometer
- Systolic blood pressure (SBP) [ Time Frame: 1 year ]SBP (expressed in milimeters of mercury) using a calibrated automatic sphygmomanometer
- Pulse [ Time Frame: 1 year ]heart rate measured with a calibrated automatic sphygmomanometer
- Serum glucose [ Time Frame: 1 year ]Determined by enzymatic method and expressed in miligrams/decilitre (mg/dL)
- Serum insulin [ Time Frame: 1 year ]determined by commercial ELISA kit and expressed in international microunits per millilitre (µIU/mL)
- HOMA-IR index [ Time Frame: 1 year ]serum glucose (expressed in millimole/litre) and serum insulin (expressed in µIU/mL) are combined to report the homeostatic model assessment for insulin resistance (HOMA-IR), according to the equation HOMA-IR = (glucose x insulin)/22.5 HOMA-IR= [serum insulin (μU/ml) × blood glucose (mmol/l)]/22.5}.
- Serum C-peptide [ Time Frame: 1 year ]measured by commercial ELISA kit and expressed as nanogram/millilitre (ng/mL)
- Plasma triglycerides (TG) [ Time Frame: 1 year ]plasma concentrations of total triglycerides is determined by an automated colorimetric enzymatic method (GPO-PAP, Roche Diagnostics, Mannheim, Germany) and expressed as milligrams/decilitre (mg/dL)
- Plasma total cholesterol (CT) [ Time Frame: 1 year ]plasma concentrations of total cholesterol is determined by an automated colorimetric enzymatic method (CHOD-PAP, Roche Diagnostics, Mannheim, Germany) and expressed as milligrams/decilitre (mg/dL)
- Plasma high density lipoproteins (HDL) [ Time Frame: 1 year ]plasma concentrations of HDL is determined by an automated direct enzymatic method (HDL-C-plus 2nd generation, Roche Diagnostics, Mannheim, Germany) and expressed as milligrams/decilitre (mg/dL)
- Plasma low density lipoproteins (LDL) [ Time Frame: 1 year ]
Triglycerides, total cholesterol and high densitity lipoproteins are combined to report LDL, according to the Friedewald formula:
LDL = CT - (TG/ 5) - HDL
- Plasma lipoprotein A [ Time Frame: 1 year ]the plasma content of lipoprotein A is quantified by ELISA and the values are expressed as milligram/decilitre (mg/dL)
- Plasma total lipoprotein B [ Time Frame: 1 year ]the plasma content of total lipoprotein B (Apo B48 + Apo B100) is quantified by an immunoturbidimetric assay (Tinaquant; Roche Diagnostics, Mannheim, Germany), The values are expressed as milligram/decilitre (mg/dL)
- Plasma creatinine [ Time Frame: 1 year ]standard spectrophotometric assay. Values expressed as milligrams per decilitre (mg/dL)
- Plasma uric acid [ Time Frame: 1 year ]Evaluated by an enzymatic procedure, with results expressed in milligrams per decilitre (mg/dL)
- Plasma alanine aminotransferase (ALT) [ Time Frame: 1 year ]use of a diagnose kit with values expressed as units per litre (U/L)
- Plasma aspartate aminotransferase (AST) [ Time Frame: 1 year ]use of a diagnose kit with values expressed as units per litre (U/L)
- Plasma gamma-glutamyl transferase (GGT) [ Time Frame: 1 year ]use of a diagnose kit with values expressed as units per litre (U/L)
- Plasma lactate dehydrogenase (LDH) [ Time Frame: 1 year ]L-Lactic Dehydrogenase kit. Results expressed as units per litre (U/L)
- Plasma bilirubin [ Time Frame: 1 year ]Spectrofotometric assay. Results expressed as milligrams per decilitre (mg/dL)
- Plasma levels of glutathion (GSH and GSSG) [ Time Frame: 1 year ]Glutathione Reductase (GR) Assay Kit. Values expressed as milliunits per millilitre (mU/mL)
- Plasma malondialdehyde [ Time Frame: 1 year ]Thiobarbituric acid (TBA) assay and HPLC determination. Results expressed as µmole per litre (µmol/L)
- Plasma ultra-sensitive C-reactive protein [ Time Frame: 1 year ]Immunoturbidimetric method. Results expressed as milligrams per litre (mg/L)
- Plasma vitamin B12 [ Time Frame: 1 year ]chemiluminescence immunoassay (CLIA). Results expressed as picograms per millilitre (pg/mL)
- Plasma thyroid-stimulating hormone (TSH) [ Time Frame: 1 year ]ELISA kit. Values expressed as international micro-units per millilitre (µlU/ml)
- Plasma levels of Oleanolic acid [ Time Frame: 1 year ]Liquid/liquid extraction and quantification by gas chromatography con flame ionization detection (GC-FID). Values expressed as nanograms per millilitre (ng/mL)
- Serum fatty acids composition [ Time Frame: 1 year ]Liquid/liquid extraction and quantification by gas chromatography con flame ionization detection (GC-FID). Values expressed as percentage of the total of fatty acids (%)
- Plasma adiponectin [ Time Frame: 1 year ]ELISA kit. values expressed as picograms per millilitre (pg/mL)
- Plasma ceruloplasmin [ Time Frame: 1 year ]ELISA kit. values expressed as milligrams per decilitre (mg/dL)
- Plasma leptin [ Time Frame: 1 year (measures at the time of recruitment and every three months thereafter) ]ELISA kit. values expressed as picograms per millilitre (pg/mL)
- Plasma resistin [ Time Frame: 1 year ]ELISA kit. values expressed as picograms per millilitre (pg/mL)
- Plasma ghrelin [ Time Frame: 1 year ]ELISA kit. values expressed as picograms per millilitre (pg/mL)
- Plasma catalase [ Time Frame: 1 year ]ELISA kit. values expressed as micromole per milligrams of protein (µmol/mg protein)
- Plasma superoxide dismutase [ Time Frame: 1 year ]ELISA kit. values expressed as units per millilitre (U/mL)
- Plasma tumor necrosis factor-alpha (TNF-alpha) [ Time Frame: 1 year ]ELISA kit. values expressed as picograms per millilitre (pg/mL)
- Plasma interleukine 1-beta [ Time Frame: 1 year ]ELISA kit. values expressed as picograms per millilitre (pg/mL)
- Plasma interleukine 6 [ Time Frame: 1 year ]ELISA kit. values expressed as picograms per millilitre (pg/mL)
- Triglycerides in VLDL [ Time Frame: 1 year ]the VLDL fraction of plasma lipoproteins will be isolated by ultracentrifugation (230,000 × g for 18 h at 4 0C). Lipds will be extracted by a modification of the Folch's method. Triglycerides are determined by HPLC, and results expressed as milligrams per milligram of protein (mg/mg protein)
- Diglycerides in VLDL [ Time Frame: 1 year ]the VLDL fraction of plasma lipoproteins will be isolated by ultracentrifugation (230,000 × g for 18 h at 4 0C). Lipds will be extracted by a modification of the Folch's method. Diglycerides are determined by HPLC, and results expressed as milligrams per milligram of protein (mg/mg protein)
- Phospholipids in VLDL [ Time Frame: 1 year ]the VLDL fraction of plasma lipoproteins will be isolated by ultracentrifugation (230,000 × g for 18 h at 4 0C). Lipds will be extracted by a modification of the Folch's method. Phospholipids are determined by HPLC, and results expressed as milligrams per milligram of protein (mg/mg protein)
- Fatty acids composition of VLDL [ Time Frame: 1 year ]the VLDL fraction of plasma lipoproteins will be isolated by ultracentrifugation (230,000 × g for 18 h at 4 0C). Lipds will be extracted by a modification of the Folch's method. Fatty acids are derivatized to their methyl esters and analyzed by gas chromatography. The results are expressed as percentage of the total of fatty acids (%)
- Apo B in VLDL [ Time Frame: 1 year ]Determined by immunoturbidimetry using a commercial kit. Values expressed as micrograms per milligram of protein (µg/mg protein)
- Continuous blood glucose monitoring [ Time Frame: 1 year ]FreeStyle Libre subcutaneous system (ABBOTT Diagnostics). Values expressed as milligrams per decilitre (mg/dL)
- Blood Count - hematocrit [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as percentage (%)
- Blood Count - red blood cells [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as cell count x 10^6 per microlitre (count x 10^6/µL)
- Blood Count - hemoglobin [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as gram per decilitre (g/dL)
- Blood Count - mean corpuscular volume [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as femtolitre (fL)
- Blood Count - mean corpuscular hemoglobin [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as picograms (pg)
- Blood Count - leukocytes [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as count x 10^3 per microlitre (count x 10^3 /µL)
- Blood Count - neutrophils [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as count x 10^3 per microlitre (count x 10^3 /µL)
- Blood Count - lymphocytes [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as count x 10^3 per microlitre (count x 10^3 /µL)
- Blood Count - monocytes [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as count x 10^3 per microlitre (count x 10^3 /µL)
- Blood Count - eosinophils [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as count x 10^3 per microlitre (count x 10^3 /µL)
- Blood Count - basophils [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as count x 10^3 per microlitre (count x 10^3 /µL)
- Blood Count - platelets [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as count x 10^3 per microlitre (count x 10^3 /µL)
- Blood Count - partial thromboplastin time [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as seconds (s)
- Blood Count - prothrombin time [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as seconds (s)
- Blood Count - coagulative fibrinogen [ Time Frame: 1 year ]Automated blood analyzer. Results expressed as milligrams per decilitre (mg/dL)
- Urine pH [ Time Frame: 1 year ]Urine pH
- Urine density [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as milligrams per millilitre (mg/mL)
- Glycosuria [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as milligrams per decilitre (mg/dL)
- Ketone bodies in urine [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as millimole per litre (mmol/L)
- Presence of nitrite in urine [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as negative or positive
- Urobilinogen [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as milligrams per decilitre (mg/dL)
- Urine bilirubin [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as milligrams per decilitre (mg/dL)
- Urine creatinine [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as milligrams per decilitre (mg/dL)
- Urine albumin/creatinine ratio (UACR) [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as milligrams of albumin per gram of creatinine
- Leukocytes in urine [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as count x 1 per microlitre (count x 1 /µL)
- Presence of sediment in urine [ Time Frame: 1 year ]Automated urine analyzer. Results expressed as negative or positive
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Ages Eligible for Study: | 18 Years to 75 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- community-residing men and women aged.
- Body Mass Index (BMI) between 25 and 39.9 kg/m2.
- diagnosed with T2DM [Following the American Diabetes Association (ADA) 2019 criteria] at least six months before being included in this trial.
- be treated with metformin (stable dose >= 850 mg/day at least three months before recruitment) as monotherapy, or in combination with other hypoglycemic agents (administration of insulin exclusively in a single basal dose), except pioglitazone and sulphonylureas.
- HbA1c below 9% at baseline, with a variation compared with a prior HbA1c from at least three months before inclusion in this trial of less than +/- 0.5 %.
- be able to give voluntary informed consent and willing to comply with all study procedures.
Exclusion Criteria:
- suffering from Type 1 Diabetes Mellitus or latent autoimmune diabetes in adults.
- suffering from chronic kidney disease (estimated glomerular filtration rate (eGFR) <30 ml/min/1.73m2).
- suffering from acute or chronic hepatitis, signs and symptoms of any liver disease other than non-alcoholic fatty liver disease (NAFLD), or ALT/AST ratio >3 times the upper limit of the reference range.
- To present, at the time of recruitment, allergies and intolerances associated with food consumption.
- pregnant and lactating women.
- lack of willingness to use a highly effective contraceptive method (in women of childbearing potential).
- fasting triglyceridemia > 600 mg/dL despite adequate treatment.
- grade 3 hypertension (systolic blood pressure ≥ 180 mm Hg and/or diastolic blood pressure ≥ 110 mm Hg) according to the 2018 guidelines of the European Society of Hypertension.
- use of pioglitazone or sulfonylureas.
- being treated with medications that promote weight loss (eg, Saxenda® [liraglutide 3.0 mg], Xenical® [orlistat], or similar over-the-counter [OTC] medications) within six months prior to the start of the trial.
- Being on chronic (>14 days) therapy with systemic glucocorticoids (excluding topical, intraocular, intranasal, intra-articular, or inhaled preparations) within six months prior to enrollment.
- Presenting any of the following cardiovascular conditions within 6 months prior to study entry: acute myocardial infarction, unstable angina, New York Heart Association (NYHA) class III or class IV heart failure, or cerebrovascular accident.
- Evidence, in the investigators' opinion, of significant uncontrolled endocrine abnormality (e.g., thyrotoxicosis, adrenal crisis) at baseline.
- History of active or untreated malignancy, or being in remission from a clinically significant malignancy (other than basal or squamous cell skin cancer, cervical carcinoma in situ, or prostate cancer in situ) during the last 5 years before the study entry.
- Participation in the last 30 days in a clinical trial with an investigational product [if the previous investigational product has a long half-life, 3 months or 5 half-lives (whichever is longer) should have passed].
- Being, at the time of recruitment, enrolled in any other clinical trial involving an investigational product or any other type of medical research that is not considered scientifically or medically compatible with this study.
- Presence of any hematologic condition that may interfere with HbA1c measurement (eg, hemolytic anemias, sickle cell anemia).
- History of any other condition (eg, known drug or alcohol abuse or psychiatric disorder, or any other physical or intellectual limitations), which, in the opinion of the investigator, may prevent the patient from following and completing the protocols.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT06030544
Contact: Pedro Pablo García-Luna, MD | +34 955013551 | garcialunapp@yahoo.es | |
Contact: José María Castellano, PhD | +34 954611550 ext 431088 | jmcas@ig.csic.es |
Spain | |
Virgen del Rocío University Hospital | Recruiting |
Sevilla, Andalicía, Spain, 41013 | |
Contact: Pedro Pablo García-Luna, MD +34 955013551 garcialunapp@yahoo.es |
Principal Investigator: | José María Castellano, PhD | Spanish National Research Council (CSIC) | |
Principal Investigator: | Pedro Pablo García-Luna, MD | Virgen del Rocío University Hospital |
Publications:
Responsible Party: | José M. Castellano, PhD, Principal Investigator, Spanish National Research Council |
ClinicalTrials.gov Identifier: | NCT06030544 |
Other Study ID Numbers: |
PID2019-107837RB-I00 |
First Posted: | September 11, 2023 Key Record Dates |
Last Update Posted: | September 11, 2023 |
Last Verified: | September 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Oleanolic acid T2DM treatment randomized controlled trial |
parallel groups design dietary intervention functional olive oil |
Diabetes Mellitus Diabetes Mellitus, Type 2 Glucose Metabolism Disorders Metabolic Diseases Endocrine System Diseases |