Related Mechanisms of RBP4 in Glycolipid Metabolism

October 8, 2022 updated by: Zhang Manna, Shanghai 10th People's Hospital

Shanghai Tenth People's Hospital,School of Medicine,Tongji University

Retinol binding protein 4 ( RBP4 ) is a newly discovered adipokine secreted by adipose tissue, which leads to insulin resistance ( IR ) and participates in the occurrence of T2DM. At present, it's not clear whether RBP4 can cause islet β cell dysfunction. The purpose of this study is to explore the role of serum apo-RBP4 in the pathogenesis of newly diagnosed T2DM patients.

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.

Detailed Description

In recent years, with the improvement of living standards and lifestyle changes, the incidence of type II diabetes is increasing, and T2DM has become a worldwide disease that seriously endangers people ' s health. When patients with diabetes in the middle and late, the condition is often irreversible, and early if effective treatment, help to improve the condition in a timely manner, delay the development of the disease process. Therefore, early diagnosis and treatment is the key to prevention and treatment of diabetes. Years of studies have shown that insulin resistance and β-cell dysfunction are the two major mechanisms of type II diabetes. Previous studies on the pathogenesis of type II diabetes mostly focused on insulin resistance, and there are few studies on β-cell dysfunction. Therefore, the study of islet β-cell dysfunction is extremely important. According to previous studies, the investigator found that although insulin resistance exists in type II diabetes, also exists to the same extent in many people who do not have diabetes. These people may have or do not have metabolic syndrome. Therefore, insulin resistance alone cannot be the decisive pathogenic factor of type II diabetes, and the increasing facts indicate that the abnormality of islet cells, especially islet β cells, may be the central link in the pathogenesis of type II diabetes. Obviously, insulin resistance is the initiating factor of type II diabetes, and the normal function of islet β cells is the determinant of whether type II diabetes occurs : the occurrence of insulin resistance initiates the pathogenesis of type II diabetes, but if the islet β cells can maintain its compensatory ability, type II diabetes will not occur. Once its compensatory ability decreases, type II diabetes gradually occurs. Therefore, islet β cell dysfunction is the key to the pathogenesis of type II diabetes. Exploring the harmful factors that impair β-cell function is critical for early prevention and treatment of diabetes.

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.
200

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.
  • Not Applicable

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
    • Shanghai
      • Shanghai, Shanghai, China, 200072
        • Xiaoyun Cheng

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

18 years to 60 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Prior to conducting any trial-related activities, including those conducted to assess the subject's eligibility Informed consent of the subject;
  2. Aged 18-60 years at the time of screening;
  3. The diagnosis of diabetes was defined as fasting blood glucose above 7.0mmol/ L twice on different days on a normal diet

Exclusion Criteria:

  1. HIV, hepatitis B or C ( self-reported ) or active pulmonary tuberculosis history :
  2. history of malignant tumor ;
  3. Severe liver dysfunction or kidney disease ( AST or ALT > 3 times the normal upper limit, or eGFR < 30ml min 1.73 m2 ) ;
  4. History of severe cardiovascular and cerebrovascular diseases ( angina pectoris, myocardial infarction or stroke ) in the past 6 months :
  5. history of severe gastrointestinal disease or gastrointestinal surgery in the past 12 months ;
  6. There are other diseases that affect glucose and lipid metabolism : hyperthyroidism, hypothyroidism, cortex Hyperalcoholism, etc. ;
  7. Secondary diseases or drugs lead to obesity, including : elevated cortisol ( such as Cushing 's syndrome ), sagging Obesity caused by body and hypothalamus injury, obesity caused by weight loss drug reduction / discontinuation, etc.
  8. Drugs affecting body weight or energy intake / energy expenditure were used within 3 months before screening, including :

Sex steroids ( intravenous, oral or intra-articular ), tricyclic antidepressants, for psychiatric disorders

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: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

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: T2DM group
patients with T2DM
Biological: overexpression STRA6/miRNA3
RBP4 express in patients with T2DM or not
Other Names:
  • RBP4 express in T2DM patients
Active Comparator: control group
patients without T2DM
Biological: overexpression STRA6/miRNA3
RBP4 express in patients with T2DM or not
Other Names:
  • RBP4 express in T2DM patients

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
RBP4
Time Frame: 3 years
Retinol binding protein 4
3 years

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
FBG
Time Frame: 3 years
fasting blood-glucose in mmol/L
3 years
FINS
Time Frame: 3 years
fasting serum insulin in mU/L
3 years
ALT
Time Frame: 3 years
alanine aminotransferase in U/L
3 years
AST
Time Frame: 3 years
aspartate aminotransferase in U/L
3 years
UA
Time Frame: 3 years
Uric acid in umol/L
3 years
HOMA-IR
Time Frame: 3 years
Homeostatic model assessment insulin resistance index=FBG*FINS/22.5
3 years
FT
Time Frame: 3 years
free testosterone (nmol/L)
3 years
LDL-C
Time Frame: 3 years
low-density lipoprotein cholesterol in mmol/L
3 years
HDL-C
Time Frame: 3 years
Hight-density lipoprotein cholesterol in mmol/L
3 years
BMI
Time Frame: 3 years
BMI=weight(kg)/heihgt(m)^2
3 years
TT
Time Frame: 3 years
total testosterone in mmol/L
3 years
PBG
Time Frame: 3 years
postprandial blood-glucose in mmol-L
3 years
PINS
Time Frame: 3 years
postprandial serum insulin in mU/L
3 years
HbA1c(%)
Time Frame: 3 years
Glycated hemoglobin
3 years
FSH
Time Frame: 3 years
follicle-stimulating hormone in IU/L
3 years
TC
Time Frame: 3 years
Total Cholesterol(mmol/L)
3 years
TG
Time Frame: 3 years
Triglyceride(mmol/L)
3 years

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.
Shanghai 10th People's Hospital

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.
  • Study Chair: Shen Qu, Dr, Department of Endocrinology,Shang hai Tenth People's Hostipal,Shang hai,Shanghai,China,200070

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.
May 1, 2018

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.
June 1, 2020

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.
July 1, 2021

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).
September 28, 2022

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.
October 8, 2022

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.
October 12, 2022

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.
October 12, 2022

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.
October 8, 2022

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.
October 1, 2022

More Information

Terms related to this study

Keywords

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.
  • RBP4

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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