Effect of Resistant Starch on Insulin Sensitivity and Beta Cell Function in Subjects With Prediabetes
Primary Purpose
Prediabetes
Status
Unknown status
Phase
Not Applicable
Locations
Study Type
Interventional
Intervention
Resistant Starch
Placebo
Sponsored by
About this trial
This is an interventional treatment trial for Prediabetes focused on measuring prediabetes, resistant starch, insulin sensitivity
Eligibility Criteria
Inclusion criteria
- Serum glycated hemoglobin (A1c) values between 5.7 and 6.5%, or fasting glucose ≥ 5.55 mmol/L and < 6.94 mmol/L or oral glucose tolerance test (75g) ≥7.77 and <11.04 mmol /L.
- Body mass index (BMI) ≥ 25 kg / m² (≥23 kg / m² for those of Asian origin) and ≤ 35 kg / m² for screening.
- Stable weight (maximum variation of approximately 5%) for at least 4 weeks prior to screening.
- Apt and willing to provide the written informed consent term and to comply with the requirements of the study protocol.
Exclusion Criteria:
- Clinically symptomatic gastrointestinal disease including, but not limited to, inflammatory bowel disease.
- History of gastric bypass, antrectomy, or resection of the small intestine.
- History of chronic pancreatitis or acute idiopathic pancreatitis.
- Myocardial infarction, coronary artery bypass grafting, post-transplant cardiomyopathy or stroke in the last 6 months.
- Any anomaly in clinical laboratory tests which may prevent safe participation in the study.
- Tumor diagnosed and / or treated (except basal cell skin cancer, cervical carcinoma in situ, or prostate cancer in situ) within the past 5 years.
- Hemoglobinopathy or chronic anemia known.
- Donation of one unit (500 ml) or more of blood, significant loss of blood equivalent to at least one unit of blood within the last 2 weeks or blood transfusion in the last 8 weeks.
Any concomitant medical condition / disorder which, in the investigator's opinion, is likely to:
- Will interfere with the patient's ability to complete the entire study period or participate in all study activities;
- Require, during the study, the administration of a treatment that may affect the interpretation of the efficacy and safety data.
- Treatment with any oral antidiabetic medicinal product and / or herbal preparations / non-prescription medicines that may affect glycemic control within 12 weeks prior to screening.
- Chronic treatment with oral or parenteral corticosteroids (> 7 consecutive days of treatment) within 4 weeks prior to screening.
- Treatment with weight-reducing agents (eg, orlistat, sibutramine, topiramate, bupropion) within the last 12 weeks prior to screening.
- History of unstable hypertension (> 170/105 mmHg) in the last 12 weeks prior to screening.
- Treatment with a lipid-lowering drug that has not been kept in a stable dose within the last 8 weeks prior to screening.
- Treatment with thyroid hormone that has not been kept in a stable dose in the last 12 weeks prior to screening.
- Investigational drug use within 30 days or 5 half-lives (whichever is longer) prior to screening unless guidelines from local health authorities require a longer period.
Any of the following laboratory abnormalities in screening:
- Alanine aminotransferase (ALT) and / or Aspartate aminotransferase (AST) 3 times the upper limit of normality;
- Glomerular filtration estimated by the equation kidney disease ≤ 60 ml per min by 1.73 m².
- Fasting triglycerides > 5.6 mmol / L;
- Thyroid stimulating hormone (TSH) outside normal range.
- History of substance abuse (including alcohol) within the last year.
- Women with potential to become pregnant and / or who are using local or systemic hormonal contraceptive method; Women in the follicular phase of the menstrual cycle and also pregnant and lactating women.
- Potentially unreliable patients and those considered by the Investigator as unsuitable for the study.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm Type
Active Comparator
Placebo Comparator
Arm Label
Resistant Starch
Placebo
Arm Description
Green banana flour
Maltodextrin, cellulose and guar gum
Outcomes
Primary Outcome Measures
Insulin sensitivity
Insulin sensitivity compared to the baseline visit measured by hyperglycemia clamp
Secondary Outcome Measures
Hormonal changes
Alteration of hormones that affect glucose metabolism, such as peptide C
Change in lipid profile
Alteration of total cholesterol, HDL-cholesterol and triglycerides
Change total body fat
Change total body fat will be compared before and after the intervention by means of bioimpedance
Beta cell function
Beta cell function (first and second phase of insulin secretion) will be measured by hyperglycemic clamp
Glycemic control
Measured by hemoglobin glycated
Full Information
NCT ID
NCT03294915
First Posted
June 28, 2017
Last Updated
July 13, 2018
Sponsor
Hospital de Clinicas de Porto Alegre
1. Study Identification
Unique Protocol Identification Number
NCT03294915
Brief Title
Effect of Resistant Starch on Insulin Sensitivity and Beta Cell Function in Subjects With Prediabetes
Official Title
Effect of Resistant Starch From Green Banana Flour on the Insulin Sensitivity of Subjects With Prediabetes: Randomized Clinical Trial
Study Type
Interventional
2. Study Status
Record Verification Date
September 2017
Overall Recruitment Status
Unknown status
Study Start Date
October 2018 (Anticipated)
Primary Completion Date
August 2019 (Anticipated)
Study Completion Date
May 2020 (Anticipated)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Hospital de Clinicas de Porto Alegre
4. Oversight
Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No
5. Study Description
Brief Summary
To compare the use supplementation based on green banana flour versus placebo in the insulin sensitivity on individuals who have prediabetes.
Detailed Description
In order to evaluate whether supplementation with green banana flour may improve insulin sensitivity of individuals with prediabetes, volunteers will be recruited by advertising on the web page of Hospital de Clinical de Porto Alegre. After screening and selection, they will be submitted to a clinical, laboratory and nutritional standard evaluation, assessment of physical activity and body fat composition.The laboratory evaluation will include the oral glucose tolerance test (OGGT 75g), lipid profile, insulin, C-peptide, glycated hemoglobin and glycated albumin. Insulin sensitivity and beta-cell function will be assessed by the hyperglycemic CLAMP before and after the intervention.Interim statistical analysis will be performed at the end of the participation of ten study volunteers.
Subjects will receive green banana flour or placebo for four weeks.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Prediabetes
Keywords
prediabetes, resistant starch, insulin sensitivity
7. Study Design
Primary Purpose
Treatment
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
20 (Anticipated)
8. Arms, Groups, and Interventions
Arm Title
Resistant Starch
Arm Type
Active Comparator
Arm Description
Green banana flour
Arm Title
Placebo
Arm Type
Placebo Comparator
Arm Description
Maltodextrin, cellulose and guar gum
Intervention Type
Dietary Supplement
Intervention Name(s)
Resistant Starch
Intervention Description
Addition of 42g per day of green banana flour (10g / day resistant starch) to the usual diet of study participants
Intervention Type
Dietary Supplement
Intervention Name(s)
Placebo
Intervention Description
Addition of 42g per day of mixture of guar gum, maltodextrin and cellulose to the usual diet of study participants
Primary Outcome Measure Information:
Title
Insulin sensitivity
Description
Insulin sensitivity compared to the baseline visit measured by hyperglycemia clamp
Time Frame
4 weeks
Secondary Outcome Measure Information:
Title
Hormonal changes
Description
Alteration of hormones that affect glucose metabolism, such as peptide C
Time Frame
4 weeks
Title
Change in lipid profile
Description
Alteration of total cholesterol, HDL-cholesterol and triglycerides
Time Frame
4 weeks
Title
Change total body fat
Description
Change total body fat will be compared before and after the intervention by means of bioimpedance
Time Frame
4 weeks
Title
Beta cell function
Description
Beta cell function (first and second phase of insulin secretion) will be measured by hyperglycemic clamp
Time Frame
4 weeks
Title
Glycemic control
Description
Measured by hemoglobin glycated
Time Frame
4 weeks
10. Eligibility
Sex
All
Minimum Age & Unit of Time
20 Years
Maximum Age & Unit of Time
50 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion criteria
Serum glycated hemoglobin (A1c) values between 5.7 and 6.5%, or fasting glucose ≥ 5.55 mmol/L and < 6.94 mmol/L or oral glucose tolerance test (75g) ≥7.77 and <11.04 mmol /L.
Body mass index (BMI) ≥ 25 kg / m² (≥23 kg / m² for those of Asian origin) and ≤ 35 kg / m² for screening.
Stable weight (maximum variation of approximately 5%) for at least 4 weeks prior to screening.
Apt and willing to provide the written informed consent term and to comply with the requirements of the study protocol.
Exclusion Criteria:
Clinically symptomatic gastrointestinal disease including, but not limited to, inflammatory bowel disease.
History of gastric bypass, antrectomy, or resection of the small intestine.
History of chronic pancreatitis or acute idiopathic pancreatitis.
Myocardial infarction, coronary artery bypass grafting, post-transplant cardiomyopathy or stroke in the last 6 months.
Any anomaly in clinical laboratory tests which may prevent safe participation in the study.
Tumor diagnosed and / or treated (except basal cell skin cancer, cervical carcinoma in situ, or prostate cancer in situ) within the past 5 years.
Hemoglobinopathy or chronic anemia known.
Donation of one unit (500 ml) or more of blood, significant loss of blood equivalent to at least one unit of blood within the last 2 weeks or blood transfusion in the last 8 weeks.
Any concomitant medical condition / disorder which, in the investigator's opinion, is likely to:
Will interfere with the patient's ability to complete the entire study period or participate in all study activities;
Require, during the study, the administration of a treatment that may affect the interpretation of the efficacy and safety data.
Treatment with any oral antidiabetic medicinal product and / or herbal preparations / non-prescription medicines that may affect glycemic control within 12 weeks prior to screening.
Chronic treatment with oral or parenteral corticosteroids (> 7 consecutive days of treatment) within 4 weeks prior to screening.
Treatment with weight-reducing agents (eg, orlistat, sibutramine, topiramate, bupropion) within the last 12 weeks prior to screening.
History of unstable hypertension (> 170/105 mmHg) in the last 12 weeks prior to screening.
Treatment with a lipid-lowering drug that has not been kept in a stable dose within the last 8 weeks prior to screening.
Treatment with thyroid hormone that has not been kept in a stable dose in the last 12 weeks prior to screening.
Investigational drug use within 30 days or 5 half-lives (whichever is longer) prior to screening unless guidelines from local health authorities require a longer period.
Any of the following laboratory abnormalities in screening:
Alanine aminotransferase (ALT) and / or Aspartate aminotransferase (AST) 3 times the upper limit of normality;
Glomerular filtration estimated by the equation kidney disease ≤ 60 ml per min by 1.73 m².
Fasting triglycerides > 5.6 mmol / L;
Thyroid stimulating hormone (TSH) outside normal range.
History of substance abuse (including alcohol) within the last year.
Women with potential to become pregnant and / or who are using local or systemic hormonal contraceptive method; Women in the follicular phase of the menstrual cycle and also pregnant and lactating women.
Potentially unreliable patients and those considered by the Investigator as unsuitable for the study.
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Fernando Gerchman, MD
Phone
+55 51 99993-3491
Email
fgerchman@gmail.com
First Name & Middle Initial & Last Name or Official Title & Degree
Ana Duarte, RND
Phone
+55 51 98429-5548
Email
nutrianacduarte@gmail.com
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Fernando Gerchman, MD
Organizational Affiliation
Federal University of Rio Grande do Sul
Official's Role
Principal Investigator
12. IPD Sharing Statement
Plan to Share IPD
No
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Effect of Resistant Starch on Insulin Sensitivity and Beta Cell Function in Subjects With Prediabetes
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