Related Mechanisms of RBP4 in Glycolipid Metabolism

Beta Cell Dysfunction Clinical Trial

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05576168
• Other study ID #: RBP4
• Status: Completed
• Phase: N/A
• Start date: May 1, 2018
• Est. completion date: July 1, 2021

Study information

• Verified date: October 2022
• Source: Shanghai 10th People's Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

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.

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 200
• Est. completion date: July 1, 2021
• Est. primary completion date: June 1, 2020
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 60 Years

Eligibility

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

Related Conditions & MeSH terms

• Beta Cell Dysfunction

Intervention

Biological:
• overexpression STRA6/miRNA3
RBP4 express in patients with T2DM or not

Locations

Country	Name	City	State
China	Xiaoyun Cheng	Shanghai	Shanghai

Sponsors (1)

Lead Sponsor	Collaborator
Shanghai 10th People's Hospital

Country where clinical trial is conducted

China, 

References & Publications (1)

Weng Q, Zhao M, Zheng J, Yang L, Xu Z, Zhang Z, Wang J, Wang J, Yang B, Richard Lu Q, Ying M, He Q. STAT3 dictates ß-cell apoptosis by modulating PTEN in streptozocin-induced hyperglycemia. Cell Death Differ. 2020 Jan;27(1):130-145. doi: 10.1038/s41418-01 — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	RBP4	Retinol binding protein 4	3 years
Secondary	BMI	BMI=weight(kg)/heihgt(m)^2	3 years
Secondary	TT	total testosterone in mmol/L	3 years
Secondary	FBG	fasting blood-glucose in mmol/L	3 years
Secondary	PBG	postprandial blood-glucose in mmol-L	3 years
Secondary	FINS	fasting serum insulin in mU/L	3 years
Secondary	PINS	postprandial serum insulin in mU/L	3 years
Secondary	ALT	alanine aminotransferase in U/L	3 years
Secondary	AST	aspartate aminotransferase in U/L	3 years
Secondary	UA	Uric acid in umol/L	3 years
Secondary	HOMA-IR	Homeostatic model assessment insulin resistance index=FBG*FINS/22.5	3 years
Secondary	HbA1c(%)	Glycated hemoglobin	3 years
Secondary	FT	free testosterone (nmol/L)	3 years
Secondary	LDL-C	low-density lipoprotein cholesterol in mmol/L	3 years
Secondary	HDL-C	Hight-density lipoprotein cholesterol in mmol/L	3 years
Secondary	FSH	follicle-stimulating hormone in IU/L	3 years
Secondary	TC	Total Cholesterol(mmol/L)	3 years
Secondary	TG	Triglyceride(mmol/L)	3 years