C-BPCSEffect of the Interaction Between Environmental Factors and Genetic Predisposition on Long-term Blood Pressure in Chinese Population
Data Collection
Collected from today forward - ProspectiveUrogenital Diseases+20
+ Brain Diseases
+ Cardiovascular Diseases
Cohort
Tracking disease incidence in order to identify risk factors and understand disease progression over time.Summary
Study start date: July 1, 2016
Actual date on which the first participant was enrolled.This study is a longitudinal cohort follow-up study. The main contents include:(1)Questionnaire design: questionnaire is designed according to the research contents and purposes. The standard questionnaires will be used to collect the general information, dietary habits, lifestyle, medical history and family history etc.(2)Anthropometric measurements: blood pressure, height, body weight,waist and hip, pulse will be acquired by medical practitioners who received professional trainings based on World Health Organization (WHO) standards, and passed relevant examinations.(3) Blood and urine samples collection: morning fasting blood, nocturia, and 24-hour urine specimen will be collected by medical staffs, and blind tubes will be set up according to 5% of the total samples. Blood biochemistries including serum total cholesterol, HDL cholesterol, LDL cholesterol, triglycerides, fasting glucose, creatinine and hsCRP can be measured using automatic biochemical analyzer. The sodium and potassium concentrations in the urine will be measured by flame photometry. The total sodium and potassium excretions in urine in 24h were calculated by multiplying the concentration and 24-h volume of urine. (4) Auxiliary examinations: Auxiliary examinations including carotid intima-media thickness, endothelium-dependent vasodilation (FMD), measurements of brachial-ankle pulse wave velocity (baPWV) and electrocardiographic parameters. The measurement will be done in hospitals by medical practitioners who received professional trainings and passed relevant examinations. (5) Single nucleotide polymorphisms detection: based on our previous studies, sodium and potassium metabolism-related gene polymorphisms will be detected using MassARRAY technology. (6) Data processing and statistics: we should input the data to the database, and utilize softwares such as SPSS, STATA, Haploview and FBAT to analyze. (7) Quality control: ① Questionnaire is strictly designed and amended by epidemiologist and clinical experts. ② A standardized "Investigator Handbook" will be stipulated according to the guidelines. ③ Staff members are required to do a rigorous training and pass the exam. ④ The investigation process will be strictly supervised by the principal investigator. ⑤ Data entry use the parallel double entry method. ⑥ During laboratory testing, blank control and blind detection are applied to ensure the quality. ⑦ Data analysis is performed by 2-3 postgraduates, inconsistent data need to be double checked.
Protocol
This section provides details of the study plan, including how the study is designed and what the study is measuring.5298 patients to be enrolled
Total number of participants that the clinical trial aims to recruit.Cohort
Eligibility
Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.Any sex
Biological sex of participants that are eligible to enroll.From 6 to 60 Years
Range of ages for which participants are eligible to join.Healthy volunteers allowed
If individuals who are healthy and do not have the condition being studied can participate.Conditions
Pathology
Criteria
Inclusion Criteria: 1. Hanzhong cohort of Adolescent Hypertension Study: * adolescents aged 6-15 years old in over 20 schools of three towns (Qili, Laojun and Shayan) in Hanzhong, Shaanxi, China. 2. Mei county cohort of adult salt-sensitive hypertension study: * Han individuals in rural northern China * adults aged 18-60 years * individuals who had a mean systolic BP (SBP) between 130-160 mmHg and/or a diastolic BP (DBP) between 85-100 mmHg and no use of antihypertensive medications were identified as the proband * the probands'parents,siblings, spouses, and offspring were recruited for the study. Exclusion Criteria: During the follow-up period, the exclusion criteria are as follows: * Secondary hypertension * a history of severe cardiovascular disease * chronic kidney disease or liver disease * unable to complete the examination * unable/refuse to sign the informed consent form
Study Plan
Find out more about all the medication administered in this study, their detailed description and what they involve.Study Objectives
Primary Objectives
Secondary Objectives
Study Centers
These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.This study has 1 location
First Affiliated Hospital of Xi'an Jiaotong University
Xi'an, ChinaOpen First Affiliated Hospital of Xi'an Jiaotong University in Google Maps