Nattokinase has been confirmed by many experiments to have a thrombolytic effect, but there are currently very few studies on nattokinase's effect on gut microbiota, sleeping status, and age-related cognitive function. Therefore, this study intends to explore the effect of nattokinase on cardiovascular disease risk factors, intestinal microbiota, sleep status and cognitive function in patients with metabolic syndrome risk and sleep disorders. This study will be a double-blind, self-control, placebo, crossover trial, and recruit 70-80 participants over 18 years old, and have risk of metabolic syndrome and sleep disorders. They will be divided into a placebo group and an experimental group. The experimental period was divided into two phases (12 weeks for each) and a 2-week washout period. In the first phase, 2 placebo or nattokinase capsules were given each day (each capsule contained nattokinase 3000FU, 2 capsules per day). After 12 weeks, a 2-week washout period was entered, and the second phase was entered for a crossover trial. At the 0th and 12th weeks of each stage, body position, blood pressure, blood biochemical values, sleep quality questionnaire, and cognitive function questionnaire will be measured, and feces will be collected for bacterial analysis. In addition, to improve the compliance of the trial, it is planned to ask the subjects to return for a follow-up visit in the 6th week of each phase, and to measure the subject's body composition and blood pressure. This study expects that daily supplementation of 2 nattokinase capsules for 12 weeks can improve cardiovascular risk factors, sleep quality and cognitive function, while also maintaining healthy intestinal flora.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
QUADRUPLE
Enrollment
80
Participants will be divided into a placebo group and an experimental group. The experimental period was divided into two phases (12 weeks for each) and a 2-week washout period. In the first phase, 2 nattokinase capsules were given each day (each capsule contained nattokinase 3000FU, 2 capsules per day). After 12 weeks, a 2-week washout period was entered, and the second phase was entered for a crossover trial.
Participants will be divided into a placebo group and an experimental group. The experimental period was divided into two phases (12 weeks for each) and a 2-week washout period. In the first phase, 2 placebo capsules were given each day (each capsule contained Microcrystalline Cellulose, 2 capsules per day). After 12 weeks, a 2-week washout period was entered, and the second phase was entered for a crossover trial.
Taipei Medical University
Taipei, Taiwan
RECRUITINGChange from Baseline The Pittsburgh Sleep Quality Index (PSQI) at 3 months
PSQI is used to evaluate sleeping quality. A self-rated questionnaire which assesses sleep quality and disturbances over a 1-month time interval.
Time frame: At 0th week, and 12th week for each of the two phases.
Change from Baseline Insomnia Severity Scale at 3 months
ISI is a simple self-assessment questionnaire for evaluating the severity of insomnia, assessing the severity of insomnia over the past two weeks in the study participants.
Time frame: At 0th week, and 12th week for each of the two phases.
Change from Baseline Epworth Sleepiness Scale (ESS) at 3 months
ESS is a self-administered questionnaire, and is used to assess the "daytime sleepiness" of the patients.
Time frame: At 0th week, and 12th week for each of the two phases.
Change from Baseline Patient Health Questionnaire at 3 months
PHQ-9 is a widely used tool for assessing depressive symptoms in both clinical and research settings, evaluating the severity of depressive symptoms over the past two weeks through 9 questions.
Time frame: At 0th week, and 12th week for each of the two phases.
Change from Baseline Generalized Anxiety Disorder at 3 months
GAD-7 is a brief self-report scale specifically designed to assess the frequency and severity of anxiety symptoms over the past two weeks.
Time frame: At 0th week, and 12th week for each of the two phases.
Change from Baseline Oguri-Shirakawa-Azumi Sleep Inventory MA version at 3 months
OSA Sleep Inventory MA version is a psychological measurement tool suitable for clinical settings and for middle-aged and elderly individuals who are unable to appropriately respond to multiple-choice questions, used to assess an individual's self-evaluation of sleep upon waking.
Time frame: At 0th week, and 12th week for each of the two phases.
Change from Baseline The Cambridge Neuropsychological Test Automated Battery at 3 months
CANTAB (Cambridge Neuropsychological Test Automated Battery) is a computerized cognitive function testing system developed by the University of Cambridge, This study will use the preclinical dementia test battery recommended by CANTAB. This test battery has been proven to have better sensitivity and discriminative ability compared to traditional assessment methods including ADAS-cog and MMSE, and can detect cognitive function changes in the short to medium term. The overall assessment includes the following 7 subtests: 1. Motor Screening Task (MOT) 2. Reaction Time (RTI) 3. Paired Associates Learning (PAL) 4. Spatial Working Memory (SWM) 5. Pattern Recognition Memory (PRM) 6. Delayed Matching to Sample (DMS) 7. Rapid Visual Information Processing (RVP)
Time frame: At 0th week, and 12th week for each of the two phases.
Anthropometric Assessment
body weight (kg)
Time frame: At 0th week, 6th week, and 12th week for each of the two phases.
Anthropometric Assessment
Body fat mass (%/kg)
Time frame: At 0th week, 6th week, and 12th week for each of the two phases.
Anthropometric Assessment
Skeletal muscle mass (%/kg)
Time frame: At 0th week, 6th week, and 12th week for each of the two phases.
Blood pressure
blood pressure (mmHg)
Time frame: At 0th week, 6th week, and 12th week for each of the two phases.
Liver Function
Serum AST (U/L)
Time frame: At 0th week, and 12th week for each of the two phases.
Liver Function
Serum ALT (U/L)
Time frame: At 0th week, and 12th week for each of the two phases.
Kidney Function
Serum BUN (mg/dL)
Time frame: At 0th week, and 12th week for each of the two phases.
Kidney Function
Creatinine (mg/dL)
Time frame: At 0th week, and 12th week for each of the two phases.
Kidney Function
eGFR (mL/min)
Time frame: At 0th week, and 12th week for each of the two phases.
Kidney Function
uric acid (mg/dL)
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Time frame: At 0th week, and 12th week for each of the two phases.
Lipid Profile
Serum HDL-C (mg/dL)
Time frame: At 0th week, and 12th week for each of the two phases.
Lipid Profile
Serum LDL-C (mg/dL)
Time frame: At 0th week, and 12th week for each of the two phases.
Lipid Profile
Serum triglyceride (mg/dL)
Time frame: At 0th week, and 12th week for each of the two phases.
Lipid Profile
Serum total cholesterol (mg/dL)
Time frame: At 0th week, and 12th week for each of the two phases.
Hematology
Complete Blood Count
Time frame: At 0th week, and 12th week for each of the two phases.
Antioxidative Status
Concentration of thiobarbituric acid-reactive substance
Time frame: At 0th week, and 12th week for each of the two phases.
Antioxidative Status
Glutathione/oxidized glutathione ratio.
Time frame: At 0th week, and 12th week for each of the two phases.
Fecal Microbiota
Using 16S rRNA and next-generation sequencing to analyze gut microbiota composition.
Time frame: At 0th week, and 12th week for each of the two phases.