Clinical Trials Logo

Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT05311462
Other study ID # ZS-3067
Secondary ID
Status Recruiting
Phase
First received
Last updated
Start date April 8, 2022
Est. completion date December 20, 2022

Study information

Verified date April 2022
Source Peking Union Medical College Hospital
Contact Wei Chen, M.D.
Phone 010-69154095
Email chenw@pumch.cn
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Medical nutritional weight loss was effective in reducing body weight and waist circumference and improving a range of cardiovascular disease risk factors in obese patients, with an average effective weight loss of 11.1 kg (about 13%) over 4 months in obese adults. However, it was found through the follow-up visit that these subjects had lost only 5.8kg from baseline and regained about half of their weight (5.1 kg, 48%) after 21 months of weight-loss intervention. In this study, intestinal flora analysis was proposed to identify the causes of individual repeated weight loss failure, structure changes of weight cycling and the advantage species of flora, and explore different intestinal microbiota(microbial genomics) in ending weight loss, obesity-related genetic characteristics (SNPs loci and RNA seq), metabolite(metabolomics)and potential interaction between appetite-related hormones and weight cycling triggers. This study aimed to provide new insights for implementing personalized weight loss programs to improve the success rate of weight loss. The obese patients who failed to lose weight repeatedly were recruited from Peking Union Medical College Hospital. Research Contents:(1) Comparison of anthropometric, biochemical, energy consumption, and intestinal microbiota related indicators between groups; (2) Genotyping to screen out differential SNPs loci;(3) Analysis of the interaction between genes and environmental factors in different metabolic types of obesity. (4) A group of healthy volunteers with normal weight as the healthy control group.


Recruitment information / eligibility

Status Recruiting
Enrollment 180
Est. completion date December 20, 2022
Est. primary completion date June 20, 2022
Accepts healthy volunteers
Gender All
Age group 18 Years to 50 Years
Eligibility Inclusion Criteria: - Normal weight (18.5 = BMI < 24 kg/m2) or obese (28 = BMI < 35 kg/m2); - Aged 18 to 50 years old; - Han nationality; - Able to follow the weight-loss prescription; - Able to sign consent independently; - Definition of Weight cycling: Loss weight more than once in the past 3 years, and weight regain exceeds 5% or more of the baseline weight of losing weight. Exclusion Criteria: - Bodyweight has changed more than ±10% in the past year; - Taking drugs known to affect body weight (orlistat, GLP-1 receptor agonists, etc.); - Taking drugs known to affect glucolipid metabolism (such as sulfonylureas, biguanides, acarbose, or insulin) have been taken in the past 6 months or at present; Lipid-lowering drugs such as statins, bate, niacin, and ezetimibe; Diuretics, ß -blockers and other antihypertensive drugs; Glucocorticoid, thyroid hormone, etc.); - Women who are currently pregnant or nearly 3 months breastfeeding; - With serious eating disorders or vigorous exercise to lose weight; - Hard physical workers; - History of serious cardiovascular disease; - Acute, chronic, or active gastrointestinal diseases; - Serious systemic diseases; - History of serious mental disorders; - Cancer or active tumor; - Secondary obesity or drug obesity patients: including hypothalamic obesity, pituitary obesity, hypercortisolism, and hypogonadism obesity; - Severe liver dysfunction (ALT, AST, ALP, and TBil > the upper limit of 2.5 times reference value); - Chronic kidney disease (eGFR < 60 mL/min/1.73 m2 or eGFR < 90 mL/min/1.73 m2 with proteinuria); - Those who are considered by the researcher to be poor compliance or unable to complete this research well.

Study Design


Related Conditions & MeSH terms


Locations

Country Name City State
China Peking Union Medical College Hospital Beijing Beijing

Sponsors (1)

Lead Sponsor Collaborator
Peking Union Medical College Hospital

Country where clinical trial is conducted

China, 

Outcome

Type Measure Description Time frame Safety issue
Other insulin resistance index Baseline time; after 3 months; after 9 months
Primary BMI changes Both the height and weight will be measured with a standard instrument and recorded in meters and kilograms respectively,following a requirement of accurating to two decimal places. And the weight and height will be combined to report in a form of BMI in kg/m^2.The changes in BMI before and after the study will be expressed as mean ± SD. Baseline time; after 1 months; after 45days; after 3 months; after 9 months
Primary serum metabolome Collection of peripheral blood (PB) serum for metabolomics analysis PB will be collected directly into serum separation tubes. The serum samples from this study will be profiled by a non-targeted LC-MS based metabolomics analysis.Metabolomics will be profiled by reverse-phase LC-MS using C8-pos (reverse-phase C8 chromatography/positive and negative ion mode that detects non-polar and weak-polar compounds) and HILIC-pos (hydrophilic interaction chromatography/positive ion mode that detects polar molecules). This study will compare and observe the type and concentration difference of serum metabolites before and after. Baseline time; after 9 months
Primary Faecal metagenomes changes Patients will be requested to give stool samples that are collected in a sterile, sealed container and stored at -80 °C for strain-resolved metagenomic sequencing.DNA will be extracted from stool using the TIANamp Stool DNA Kit. We will conduct quality control using agarose gel electrophoresis. Metagenomics library will be constructed by NEXTflex Rapid DNA-Seq Kit (Illumina). The procedures included cluster generation, template hybridization, isothermal amplification, linearization, blocking and denaturation, and hybridization of the sequencing primers. We will observe differences in microbiome characteristics at various time points. Baseline time; after 45 days; after 3 months; after 9 months
Primary transcriptome changes Peripheral blood of the subjects will be collected and used to extract PBMC.RNA extraction and transcriptome sequencing of the PBMC samples will be used for transcriptome sequencing.Total RNA will be extracted by using the RNAeasy kit according to the manufacturer's instructions. The purity, concentration, and integrity of total RNA will be checked using the NanoPhotometer spectrophotometer, the Qubit RNA Assay Kit in Qubit 2.0 Fluorometer and the RNA Nano 6000 Assay Kit of the Bioanalyzer 2100 System, respectively. Besides, RNA degradation and contamination will be monitored on 1% agarose gels. Sequencing libraries will be generated using the rRNA-depleted RNA by NEBNext UltraTM Directional RNA Library Prep Kit for Illumina and sequenced on an Illumina HiSeq 4000 platform. Transcriptome changes before and after the intervention will be observed to predict the outcome of weight-loss interventions. Baseline time; after 3 months
See also
  Status Clinical Trial Phase
Recruiting NCT04101669 - EndoBarrier System Pivotal Trial(Rev E v2) N/A
Recruiting NCT04243317 - Feasibility of a Sleep Improvement Intervention for Weight Loss and Its Maintenance in Sleep Impaired Obese Adults N/A
Terminated NCT03772886 - Reducing Cesarean Delivery Rate in Obese Patients Using the Peanut Ball N/A
Completed NCT03640442 - Modified Ramped Position for Intubation of Obese Females. N/A
Completed NCT04506996 - Monday-Focused Tailored Rapid Interactive Mobile Messaging for Weight Management 2 N/A
Recruiting NCT06019832 - Analysis of Stem and Non-Stem Tibial Component N/A
Active, not recruiting NCT05891834 - Study of INV-202 in Patients With Obesity and Metabolic Syndrome Phase 2
Active, not recruiting NCT05275959 - Beijing (Peking)---Myopia and Obesity Comorbidity Intervention (BMOCI) N/A
Recruiting NCT04575194 - Study of the Cardiometabolic Effects of Obesity Pharmacotherapy Phase 4
Completed NCT04513769 - Nutritious Eating With Soul at Rare Variety Cafe N/A
Withdrawn NCT03042897 - Exercise and Diet Intervention in Promoting Weight Loss in Obese Patients With Stage I Endometrial Cancer N/A
Completed NCT03644524 - Heat Therapy and Cardiometabolic Health in Obese Women N/A
Recruiting NCT05917873 - Metabolic Effects of Four-week Lactate-ketone Ester Supplementation N/A
Active, not recruiting NCT04353258 - Research Intervention to Support Healthy Eating and Exercise N/A
Completed NCT04507867 - Effect of a NSS to Reduce Complications in Patients With Covid-19 and Comorbidities in Stage III N/A
Recruiting NCT03227575 - Effects of Brisk Walking and Regular Intensity Exercise Interventions on Glycemic Control N/A
Completed NCT01870947 - Assisted Exercise in Obese Endometrial Cancer Patients N/A
Recruiting NCT05972564 - The Effect of SGLT2 Inhibition on Adipose Inflammation and Endothelial Function Phase 1/Phase 2
Recruiting NCT06007404 - Understanding Metabolism and Inflammation Risks for Diabetes in Adolescents
Recruiting NCT05371496 - Cardiac and Metabolic Effects of Semaglutide in Heart Failure With Preserved Ejection Fraction Phase 2