There is accumulating evidence suggesting that olive oil may have a positive impact on conditions involving cognitive deficits, such as MCI and AD. More specifically, these beneficial effects are mostly attributed to some phenolic compounds in olive oil, such as oleocanthal, oleuropein and ligstroside. Oleocanthal is deeper studied than the rest of olive oil phenol components and it shows promising results in neuroprotection against AD through various suggested mechanisms, such as the enhancement of amyloid-beta clearance in the brain and the inhibition of neurofibrillary tangles formation. For this reason, it would be interesting to study the effects of freshly-pressed extra virgin olive oil, as it is known that it contains oleocanthal in higher concentrations than the normal extra virgin olive oil. The aim of the study is to evaluate the beneficial effect of extra virgin olive oil in comparison to freshly-pressed extra virgin olive oil on patients diagnosed with mild cognitive impairment (MCI). Study Type: Interventional Study Design: Allocation: Randomized Intervention Model: Parallel Assignment Masking: Double Blind (Subject, Investigator) Primary Purpose: Prevention
OBJECTIVES OF THE TRIAL The objectives of this study are: * To investigate the efficacy of freshly pressed EVOO as a disease course modifying treatment for mild cognitive impairment in a phase III double-blind placebo-controlled study. * To investigate the effects in objective measurements in patients with mild cognitive impairment. STUDY DESIGN This is a Greek, randomized, double-blind, placebo-controlled study group of EVOO compared with placebo. Qualifying patients will be randomly assigned to receive 50mL of freshly-pressed EVOO or placebo (EVOO) or mediterranean dietary protocol on a daily basis for 24 months. Patients undergo assessments at baseline,12 and 24 months +/- 7 days after beginning treatment. Duration The total study duration will be 30 months. Patients will receive study medication for 24 months. Number of Subjects 150 subjects total will be enrolled. ; 50 in the experimental group (freshly pressed EVOO); 50 in the Control Group 1(EVOO) and 50 in control Group 2(same dietary habits-mediterranean dietary protocol). Patient Eligibility Screening Form (ESF) An eligibility form documenting the patient's fulfillment of the entry criteria will be completed by the assessor. The following information will be included in the ESF: * Patient identification: Initials (First initial of first name and First initial of surname), date of birth and Patient Identification Number. * Eligibility Screening; Checklist of inclusion and exclusion criteria * Eligibility Statement; for patients found to be ineligible, the reason for ineligibility must be stated * Written informed consent will be obtained from the subject . The informed consent form must be co-signed by the physician. The nature of the study and the potential risks associated with the trial will be explained to all subject candidates and their responsible informants. * Signature and date: the ESF may be completed by an assessor but it is required that the principal investigator/study clinician sign and date the ESF to verify eligibility of the patient for inclusion.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
150
Dietary Supplement: Freshly-pressed extra virgin olive oil Freshly-Pressed Extra Virgin Olive Oil Aluminum bottle with 500 ml of freshly-pressed extra virgin olive oil 1 bottle per 10 days
Extra Virgin Olive Oil Aluminum bottle with 500 ml of freshly-pressed extra virgin olive oil 1 bottle per 10 days
50 patients that will have the same dietary habits and a Mediterranean dietary protocol
Greek Association of Alzheimer's Disease and Related Disordeers
Thessaloniki, Greece
RECRUITINGNeuropsychological Assessment- Measurements to Assess General Cognitive Function
Changes in Mini-Mental State Examination (MMSE) score
Time frame: baseline, 12 and 24 months
FUCAS-Measurements to Assess Daily Functionality
Changes in Functional cognitive assessment scale (FUCAS) score
Time frame: baseline, 12 and 24 months
Letter & Category Fluency Test- Measurement to Assess Verbal Fluency and Learning
Changes in the Letter \& Category Fluency Test
Time frame: baseline, 12 and 24 months
CDR- Measurements to Assess General Cognitive Function
Changes in Global Clinical Dementia Rating (CDR) score (sum of boxes)
Time frame: baseline, 12 and 24 months
MoCA- Measurements to Assess General Cognitive Function
Changes in Montreal Cognitive Assessment (MoCA)
Time frame: baseline, 12 and 24 months
CANTAB- Measurements to Assess General Cognitive Function
Changes in Cambridge Neuropsychological Test Automated Battery (CANTAB)
Time frame: baseline, 12 and 24 months
Clock Drawing test- Measurements to Assess General Cognitive Function
Changes in the Clock Drawing test
Time frame: baseline, 12 and 24 months
Logical Memory test- Measurements to Assess General Cognitive Function
Changes in the Logical Memory test
Time frame: baseline, 12 and 24 months
Digit Span Forward & Backward test- Measurements to Assess General Cognitive Function
Changes in the Digit Span Forward \& Backward test
Time frame: baseline, 12 and 24 months
WAIS-R Digit Symbol- Measurements to Assess General Cognitive Function
Changes in the WAIS-R Digit Symbol Substitution Test
Time frame: baseline, 12 and 24 months
TMT part A and B- Measurements to Assess General Cognitive Function
Changes in the Trail Making Test
Time frame: baseline, 12 and 24 months
ADASCog-Measurements to Assess Daily Functionality
Changes in Alzheimer's Disease Assessment Scale-Cognitive (ADASCog)
Time frame: baseline, 12 and 24 months
Functional Rating Scale for Dementia-Measurements to Assess Daily Functionality
Changes in Functional Rating Scale for Dementia (FRSSD)
Time frame: baseline, 12 and 24 months
Auditory Verbal Learning Test- Measurement to Assess Verbal Fluency and Learning
Changes in the Auditory Verbal Learning Test
Time frame: baseline, 12 and 24 months
Boston Naming Test- Measurement to Assess Verbal Fluency and Learning
Changes in the Boston Naming Test
Time frame: baseline, 12 and 24 months
NeuroImaging
Changes in brain Magnetic Resonance Imaging (MRI) 1.5 Tesla (brain atrophy) \[Time Frame: baseline, 24 month\]
Time frame: baseline and 24 months
CSF - beta amyloid
Changes in mean values on high sensitivity beta-amyloid 1-42 protein
Time frame: baseline and 24 months
CSF TAU-protein
Changes in mean values on TAU-protein in cerebrospinal fluid
Time frame: baseline and 24 months
Neurophysiology and ERPs
•Changes in Event-Related Potential (ERP) (oddball paradigm, auditory ERPs) \[Time frame: baseline, 12 month, 24 month\]
Time frame: baseline, 12 and 24 months
Electroencephalography recording
•Changes in Electroencephalography (EEG), resting state.The device records brain signals through 57 electrodes, 2 reference electrodes attached to the earlobes, and a ground electrode placed at a left anterior position. \[Time frame: baseline, 12 month, 24 month\]
Time frame: baseline, 12 and 24 months
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