Ischemic Preconditioning
Conditions
Keywords
Remote ischemic preconditioning, Peripheral blood, Healthy adults
Brief summary
The aim of this study is to investigate the effects of remote ischaemic preconditioning on the peripheral blood characteristics of healthy adults and to explore the possible mechanisms for improving ischaemia/reperfusion injury and its protective effects on the cardiovascular system.
Detailed description
This study plans to enroll 80 healthy adult volunteers. Of these, 60 participants will be randomly assigned in a 1:1 ratio to either a high-frequency remote ischemic preconditioning (RIPC) group or a low-frequency RIPC group, with 30 participants in each group. An additional 20 healthy volunteers will be enrolled as a non-randomized, no-intervention control group. Participants in the high-frequency RIPC group will undergo RIPC training twice daily for seven consecutive days. Each session will consist of four cycles of 5 minutes of ischemia followed by 5 minutes of reperfusion. Participants in the low-frequency RIPC group will receive the same RIPC protocol once daily for seven consecutive days. Participants in the no-intervention control group will not receive RIPC training or any other study-related intervention. Peripheral venous blood samples will be collected from participants in the two RIPC groups immediately before the first RIPC session, at the completion of the 7-day training period on Day 7, and seven days after completion of the training on Day 14. Participants in the no-intervention control group will undergo blood collection at the corresponding time points: baseline, Day 7, and Day 14. Relevant physiological indicators will also be recorded in accordance with the study protocol. The study will assess longitudinal changes in peripheral blood biomarkers across the three groups and compare changes from baseline to Days 7 and 14. By including a no-intervention control group, the study aims to distinguish RIPC-related effects from natural temporal variation and other non-intervention-related changes. It will further evaluate whether different frequencies of RIPC produce distinct effects on peripheral blood biomarkers in healthy adults.
Interventions
The participants rested in the supine position for 5 minutes, then turn on the ischaemic preconditioning apparatus and place the automatically programmed blood pressure cuff on both upper arms of the participant, pressurize to 200 mmHg, pressurize for 5 minutes, rest for 5 minutes, perform 4 cycles for a total of 40 minutes each time. The training for participants in group A will be performed once daily, while for participants in group B the training will be performed twice daily. And heart rate and blood pressure before and after each training will be recorded for 7 days.
Sponsors
First Affiliated Hospital Xi'an Jiaotong University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes
Inclusion criteria
* Aged 18 to 45 years; * Be in good health; * Consent to participate in the clinical trial and sign the informed consent form.
Exclusion criteria
* Abnormal results in biochemical checks and physiological indicators. * Cardiovascular and cerebrovascular diseases: hypertension, coronary heart disease, congenital heart disease, cerebrovascular alterations, etc. * Endocrine diseases: diabetes, thyroid disorders, etc. * Hematologic diseases: anemia, paroxysmal hemoglobinuria, primary thrombocytosis, etc. * Infectious diseases: hepatitis B, hepatitis C, syphilis, etc. * Cancer. * Neurological and psychiatric disorders. * Vascular diseases: peripheral vascular disease, Raynaud's syndrome, thromboembolic diseases. * Major trauma or surgery within the last six months. * Pregnant or breastfeeding women. * Upper limbs unsuitable for compression treatment: history of upper limb surgery, presence of tissue damage and limb deformity, and concomitant hemorrhagic diseases. * Recent circumstances that may affect results: blood donors within the last month, any medication taken within the last month, fever within the last week, women within their menstrual cycle or within 7 days before the start of menstruation. * Patients who refuse to sign the informed consent form for participation in this study.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes in the expression levels of cardiovascular disease-related molecules | Baseline (before training), the end of the training day (7th day from the start of training), 7th day after the end of training | Changes in the expression levels of cardiovascular disease-related molecules between participants in group A (intermediate RIPC training, once a day) or B (intense RIPC training, twice a day) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Longitudinal within-group changes in the expression of cardiovascular disease-related molecules | Baseline (before training), the end of the training day (7th day from the start of training), 7th day after the end of training | Longitudinal within-group changes in cardiovascular disease-related molecular biomarker expression across different study time points |
| Change of blood pressure | Baseline (before training), during the training session (day1-7), 7th day after the end of training. | Changes in blood pressure at different remote ischemic preconditioning training time points, measured with sphygmomanometer. |
| Change of heart rates | Baseline (before training), during the training session (day1-7), 7th day after the end of training | Changes in heart rates at different remote ischemic preconditioning training time points, measured with stopwatch. |
| Incidence of adverse events | During day 1 to 7 of training. | Incidence of adverse events related to remote ischemic preconditioning training. The adverse events were decided according to the medical records. |
| Changes in the Plasma Proteomic Profile | Baseline, Day 7, and Day 14 | The relative abundance of plasma proteins will be assessed using mass spectrometry at baseline, Day 7, and Day 14. Changes from baseline and longitudinal differences among the high-frequency RIPC group, low-frequency RIPC group, and no-intervention control group will be evaluated. The no-intervention control group will help distinguish RIPC-related changes from natural temporal variation and other non-intervention-related changes. |
Countries
China
Contacts
CONTACTGuoliang Li
CONTACTYang Yan
PRINCIPAL_INVESTIGATORGuoliang Li
First Affiliated Hospital Xi'an Jiaotong University
PRINCIPAL_INVESTIGATORYang Yan
First Affiliated Hospital Xi'an Jiaotong University
Outcome results
None listed