Berberine on the Secretion of Incretin

July 14, 2023 updated by: Jin-Kui Yang, Beijing Tongren Hospital

The Effect of Berberine on the Secretion of Incretin in Normal Man

Berberine (BBR) is the main active ingredient of the ancient Chinese herb medicine Coptis. The hypoglycemic effect of BBR has been demonstrated in numerous studies. Although BBR is safe and effective in the treatment of diabetes, its exact hypoglycemic mechanism is still unclear. Jin-Kui Yang found that BBR can promote GLP-1 secretion from intestinal L cells in mice in vitro and in vivo, thereby achieving the effect of lowering blood glucose, but it is still unknown whether BBR can promote incretin secretion in humans. In this study, investigators plan to examine the effect of BBR on secretion of incretin in human.

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.

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.
16

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.
  • Early Phase 1

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

  • China
      • Beijing, China
        • Hao Wang
    • Beijing
      • Beijing, Beijing, China, 100730
        • Beijing Tongren Hospital, Capital Medical University

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

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  1. Voluntary participation in the trial and signed informed consent form.
  2. Healthy male subjects aged 18-45 years (including 18 and 45 years).
  3. No history of current or former diseases such as heart, liver, kidney, gastrointestinal tract, nervous system, respiratory system, mental disorders and metabolic abnormalities that the investigator considers meaningful; no physical examination, electrocardiogram, and laboratory examination results abnormality or abnormality has no clinical significance (subject to the judgment of the physician).
  4. Body mass index of 18.0-25.0 kg/cm2 (including 18.0 and 25.0 kg/cm2) and no centripetal obesity (waist-to-hip ratio less than 0.9).
  5. No family history of diabetes mellitus and obesity.
  6. Normal glucose tolerance (fasting blood glucose <6.1 mmol/L and 2h blood glucose <7.8mmol/L after oral administration of 75g glucose) and normal insulin secretion function (as judged by the investigator through the results of insulin release experiment).
  7. Able to communicate well with the investigator and complete the study in accordance with the study regulations.

Exclusion Criteria:

  1. Infection with hepatitis (A, B, or C), HIV and syphilis.
  2. Those with clear allergy to berberine hydrochloride or its preparation components; those with drug (including salicylic acid) allergy, history of allergic diseases or allergic constitution.
  3. Patients with hemolytic anemia and glucose-6-phosphate dehydrogenase deficiency.
  4. Those who have used any prescription medication, herbal medicine within 4 weeks prior to dosing and/or taken over-the-counter medication (except for subjects with occasional or restricted use of paracetamol), supplements (except for routine vitamin supplementation) within 2 weeks prior to dosing.
  5. Cumulative amount of blood loss (eg. blood donation) over 400mL within 3 months prior to baseline visit and during the study.
  6. Heavy smokers (25 or more cigarettes per day) and heavy drinkers (14 units of alcohol per week, 1 unit = 285ml of beer, or 25ml of spirits, or 100ml of wine).
  7. Those with a history of substance abuse or positive urine test for prohibited drugs.
  8. Those who participated in any clinical trial within 1 month prior to the trial, or those who plan to participate in other clinical trials during or within 1 month after the end of the trial.
  9. Other circumstances that the investigator considers unsuitable for participation in this study.

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: Quadruple

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: Berberine Chloride
This study employed a randomized, double-blind, placebo-controlled, two-period crossover design: subjects were randomized into two groups of equal size. The random allocation was conducted by asking volunteers to select the randomized number generated by computer. Each number represented placebo or BBR, and each group has the same number of numbers. The dosing sequence in the first group was oral BBR in the first cycle and oral placebo in the second cycle. The second group was administered placebo in the first cycle and BBR in the second cycle. Take the second dose 14 days after the first dose. After the last dose, continue to observe for 14 days to watch for side effects. On each experimental day, after an overnight fast, the subjects received a single oral dose of 1 g of BBR or a corresponding dose of the placebo.
Drug: Placebo
Placebo control
Drug: Berberine Chloride
Traditional Chinese medicine
Placebo Comparator: Placebo control
This study employed a randomized, double-blind, placebo-controlled, two-period crossover design: subjects were randomized into two groups of equal size. The random allocation was conducted by asking volunteers to select the randomized number generated by computer. Each number represented placebo or BBR, and each group has the same number of numbers. The dosing sequence in the first group was oral BBR in the first cycle and oral placebo in the second cycle. The second group was administered placebo in the first cycle and BBR in the second cycle. Take the second dose 14 days after the first dose. After the last dose, continue to observe for 14 days to watch for side effects. On each experimental day, after an overnight fast, the subjects received a single oral dose of 1 g of BBR or a corresponding dose of the placebo.
Drug: Placebo
Placebo control
Drug: Berberine Chloride
Traditional Chinese medicine

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
Differences of serum GLP-1 levels between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean serum GLP-1 in the two groups during glucose tolerance test.
4 hours
Differences of serum GIP levels between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean serum GIP levels in the two groups during glucose tolerance test.
4 hours
Differences of blood glucose levels between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean blood glucose levels in the two groups during glucose tolerance test.
4 hours

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
Differences of serum insulin levels between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: The time frame is the same as Primary Outcome Measure 1
To compare the mean insulin levels in the two groups during glucose tolerance test.
The time frame is the same as Primary Outcome Measure 1
Differences of serum C-peptide levels between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean serum C-peptide levels in the two groups during glucose tolerance test.
4 hours
Differences of serum potassium levels between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean serum potassium levels in the two groups during glucose tolerance test.
4 hours
Differences of serum sodium levels between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean serum sodium levels in the two groups during glucose tolerance test.
4 hours
Differences of serum chloride levels between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean serum chloride levels in the two groups during glucose tolerance test.
4 hours
Differences of serum calcium levels between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean serum calcium levels in the two groups during glucose tolerance test.
4 hours

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Differences of heart rate between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean heart rate in the two groups during glucose tolerance test.
4 hours
Differences of QT-interval duration between BBR and placebo treatment groups during the glucose tolerance test.
Time Frame: 4 hours
To compare the mean QT-interval duration in the two groups during glucose tolerance test.
4 hours

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.
Beijing Tongren Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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.
October 12, 2022

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.
April 6, 2023

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.
April 20, 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 4, 2023

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.
July 14, 2023

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.
July 17, 2023

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.
July 17, 2023

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.
July 14, 2023

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.
July 1, 2023

More Information

Terms related to this study

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.
  • BBR incretin

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.

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