About this trial
Emerging evidence identifies vascular aging independently predicting cardiovascular events, yet effective clinical interventions remain lacking. Nicotinamide adenine dinucleotide (NAD+) is an essential cofactor whose levels decline with age, and preclinical studies suggest that boosting NAD+ can improve vascular function and structure. Preliminary clinical studies in healthy older adults indicate that supplementation with NAD+ precursors, such as nicotinamide riboside(NR) or nicotinamide mononucleotide (NMN), can reduce arterial stiffness as measured by pulse wave velocity (PWV). However, whether NAD+ supplementation can improve vascular endothelial function and exert anti-stiffening effects in patients who have already developed measurable arterial stiffness remains unknown. Based on this evidence, the investigator hypothesize that the Coenzyme I for Injection will reverse vascular aging in older adults with established arterial stiffening.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Ages 40-70 years;
cf-PWV was abnormally elevated and above the upper limit of its age-and blood-pressure matched reference range;
Systolic Blood Pressure < 160 mmHg and ≥ 140 mmHg or Diastolic BP < 100 mmHg ≥ 90mmHg;
Signed informed consent.
Disqualifiers
Consumption of foods or medications containing high levels of NAD+, NR, NAM, NMN, or niacin-related components (including Vitamin B3 and natural health products) within 3 months prior to screening;
History of major cardiovascular or cerebrovascular events, including myocardial infarction, angina, stroke, or hospitalization for arterial revascularization;
Systolic blood pressure ≥ 160 mmHg and/or diastolic blood pressure ≥ 100 mmHg;
Diagnosis of malignant tumor;
Trial design
Parallel
Treatments tested in this trial
Coenzyme I for Injection
DrugSubjects receive 7 consecutive days of intravenous infusion of Coenzyme I for injection.
NaCl (placebo)
DrugSubjects receive 7 consecutive days of intravenous infusion of NaCl(0.9%).
Treatment groups
Trial outcomes
Primary outcomes
The change in flow-mediated vasodilation(FMD)
Changes in FMD from baseline to day 8/28.
Secondary outcomes
Changes in cf-PWV.
Changes in cf-PWV from baseline to day 8/28.
Changes in retinal arteriovenous ratio (AVR) and wall/lumen ratio (WLR)
Changes in retinal arteriovenous ratio (AVR) and wall/lumen ratio (WLR) from baseline to day 8/28.
Changes in the level of NAD+
Changes in the level of NAD+ from baseline to day 8/28.
Changes in the metabolomics.
Changes in the metabolomics from baseline to day 8/28.
Sponsors and contacts
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