Mental Processes Clinical Trial
— CoCo_ChronicOfficial title:
Mechanistic Assessment of the Acute and Chronic Cognitive Effects of Flavanol/Anthocyanin Intervention in Humans - Chronic Trial
Verified date | May 2018 |
Source | University of Reading |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
A double-blind, randomised, controlled, parallel arm chronic intervention trial with healthy older adults will be conducted to determine the effect of a flavonoid-rich supplement on cognitive function, peripheral arterial health and brain mechanisms. It is predicted that chronic flavonoid supplementation will result in cognitive benefits and that these may be due to beneficial effects of flavonoids on vascular and brain function.
Status | Active, not recruiting |
Enrollment | 80 |
Est. completion date | December 2018 |
Est. primary completion date | December 2018 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 60 Years to 75 Years |
Eligibility |
INCLUSION CRITERIA: - Males and females aged 60-75 years - English as primary language, able to understand the study information sheet, follow instructions in English and give informed consent - Non-smokers - Alcohol consumption should be within the current National Health Service (NHS) recommendation - women: =21 units per week (max 3 per day), 1 large 250mL glass of wine (Alcohol By Volume 12%) is 3 units; men: = 28 units per week (max 4 per day), 1 pint of strong lager/beer/cider (Alcohol By Volume 5.2%) is 3 units - BP <150/90 (determined at screening) - BMI <30 (determined at screening) - Full blood count parameters within the normal range, specifically: - Haemoglobin to check for anaemia (>12.5 g/dL for males and >11.5 g/dL for females) - Total white cell count (3.6-11.0 x109/L) - Differential count: - Neutrophils (1.8 - 7.5 x109/L) - Lymphocytes (1.0 - 4.0 x109/L) - Monocytes (0.2 - 0.8 x109/L) - Eosinophils (0.1 - 0.4 x109/L) - Basophils (0.02 - 0.1 x109/L) - Normal platelet function (platelet count 140-400 x109/L) - Red cell count (4.50-6.50 x1012/L for males; 3.80-5.80 x1012/L for females) - Haematocrit (0.40-0.54 L/L for males; 0.37-0.47 L/L for females) - Mean Cell Volume (80-100 fL) - Mean Cell Haemoglobin (27-32 pg) - Reticulocyte Count (0.2-2.0 %) - The following blood parameters within the normal range: - Liver function (gamma-glutamyl transpeptidase [GGT] level < 80 IU/L, alanine transaminase [ALT] < 30 U/L, alkaline phosphatase [ALP] < 320 U/L), - Kidney function (total bilirubin = 22 µmol/L, creatinine = 106 µmol/L, uric acid < 506 µmol/L), - Fasting blood glucose level (< 7 mmol/L), - Triglycerides (< 2.2 mmol/L) - Plasma cholesterol (< 8 mmol/L) EXCLUSION CRITERIA: - General global cognitive impairment (Mini Mental State Examination score < 24) - Un-corrected vision or hearing problems - Speech or communication difficulties - Currently suffering from depression (Brief Symptom Inventory score of = 11) - Diagnosed with any learning difficulty such as Dyslexia or Dyspraxia - Sensitive/allergic to the intervention or any of the study foods - Suffering from any form of clinically diagnosed disease, including: - Major mental illness (current or previous episode with hospitalization) - Chronic fatigue syndrome - Liver disease - Diabetes mellitus - Heart disease or myocardial infarction - Taking blood pressure medication, anticoagulants, anti-platelet medication or antidepressants - On a weight reducing dietary regimen or taking any dietary supplements (including dietary fatty acids), unless willing to temporarily refrain from taking dietary supplements for the duration of the study - Subjects consuming more than seven portions of fruit and vegetables a day - Subjects consuming more than five cups of tea a day - Men taking part in more than 10.5 hours of moderate to vigorous exercise per week and women taking part in more than 7 hours of moderate to vigorous exercise per week (assessed on an individual basis to avoid recruitment of people who exercise too vigorously) - Taking illegal substances MRI part: - Has a heart pacemaker or metal implants (including any non-removable ferro-magnetic dental items) - Any body piercing items that cannot be removed - Is claustrophobic Note: Participation in other research trials within the last month will need to be declared and may affect the start date for participation in the current trial. |
Country | Name | City | State |
---|---|---|---|
United Kingdom | Hugh Sinclair Unit of Human Nutrition, University of Reading | Reading | Berkshire |
Lead Sponsor | Collaborator |
---|---|
University of Reading | Biotechnology and Biological Sciences Research Council, Mars, Inc. |
United Kingdom,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in Cognitive Performance (0-24 weeks) | Composite measure of global cognitive function (scores from different cognitive tasks will be standardised to allow an overall score of global cognitive function to be calculated) | Change from baseline (pre intervention) to week 24 (post intervention) | |
Primary | Change in Cognitive Performance (0-36 weeks) | Composite measure of global cognitive function (scores from different cognitive tasks will be standardised to allow an overall score of global cognitive function to be calculated) | Change from baseline (pre intervention) to week 36 (follow-up) | |
Secondary | Change in Flow Mediated Dilatation (0-24 weeks) | Technique to measure the flexibility of the endothelium in larger peripheral blood vessels | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in Flow Mediated Dilatation (0-36 weeks) | Technique to measure the flexibility of the endothelium in larger peripheral blood vessels | Change from baseline (pre intervention) to week 36 (follow-up) | |
Secondary | Change in cerebral blood flow (0-24 weeks) | Use of arterial spin labelling to determine cerebral blood flow at rest | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in cerebral blood flow (0-36 weeks) | Use of arterial spin labelling to determine cerebral blood flow at rest | Change from baseline (pre intervention) to week 36 (post intervention) | |
Secondary | Change in brain activity (0-24 weeks) | Use of functional MRI to determine BOLD response (indicative of brain activation) during cognitive activity | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in brain activity (0-36 weeks) | Use of functional MRI to determine BOLD response (indicative of brain activation) during cognitive activity | Change from baseline (pre intervention) to week 36 (post intervention) | |
Secondary | Change in brain structure (0-24 weeks) | Use of high resolution images to determine changes to brain structure such as grey and white matter | Change from baseline (pre intervention) to week 24 (follow-up) | |
Secondary | Change in brain structure (0-36 weeks) | Use of high resolution images to determine changes to brain structure such as white and grey matter | Change from baseline (pre intervention) to week 36 (follow-up) | |
Secondary | Change in flavanol monomer levels | Concentrations of epicatechin and catechin in plasma and urine samples | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in procyanidin levels | Concentrations of procyanidin dimers through to decamers in plasma and urine samples | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in levels of flavanol monomer metabolites/derivatives | Concentrations of epicatechin and catechin metabolites/derivatives in plasma and urine samples | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in levels of procyanidin metabolites/derivatives | Concentrations of procyanidin metabolites/derivatives in plasma and urine samples | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in levels of nitroso compounds | Concentrations of nitric oxide, nitrate and nitrite levels in plasma/serum &/ urine | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in levels of markers of inflammation | Concentrations of pro and anti-inflammatory cytokines and C-reactive protein (CRP) levels in plasma/serum | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in levels of markers of neuronal function | Concentrations of brain-derived neurotrophic factor (BDNF) and lactate in plasma/serum | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in levels of a marker of stress/anxiety | Concentrations of cortisol in plasma/serum | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in levels of a marker of oxidative stress | Concentrations of uric acid in plasma/serum | Change from baseline (pre intervention) to week 24 (post intervention) | |
Secondary | Change in levels of markers of vascular function/cardiovascular disease (CVD) risk | Concentrations of glucose, insulin, cholesterol (total, high density lipoprotein [HDL], low density lipoprotein [LDL]), non-esterified fatty acids [NEFA], triglycerides [TAG] in plasma/serum | Change from baseline (pre intervention) to week 24 (post intervention) |
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