Participants will receive lactose placebo tablets, encapsulated in opaque capsules, and will be asked to take one capsule daily for seven days at night-time, by mouth

Participants will receive 20mg atorvastatin tablets, encapsulated in opaque capsules, and will be asked to take one capsule daily for seven days at night-time, by mouth

Healthy

Atorvastatin 20mg

Lactose placebo

Riccardo De Giorgi

7-day Atorvastatin and Emotional Processing

The Effect of Seven-Day Atorvastatin Administration on Emotional Processing, Reward Processing, and Inflammation in Healthy Volunteers

Faces representing varying degrees [from "neutral" (0%) to "full prototypical emotion" (100%) of basic emotions (happiness, fear, anger, disgust, sadness, surprise)] are displayed on the screen and participants are asked to quickly and correctly classify them. Accuracy and reaction times on positive vs negative stimuli are compared between those receiving drug and placebo.

Faces acting as positive or negative emotional stimuli (happy or fearful facial expressions) are presented together with a matched neutral face. One is presented above and one below a central fixation point. Subsequently, a probe appears behind one of the two faces and participants are asked to quickly indicate the position of the probe. Accuracy and reaction times on positive vs negative stimuli are compared between those receiving drug and placebo.

Words describing positive and negative personality characteristics are presented, and participants are asked to quickly indicate whether they would like or dislike being described with the presented word. Accuracy and reaction times on positive vs negative stimuli are compared between those receiving drug and placebo.

After a delay from the Emotional categorisation task, participants are asked to recall and write down as many words as possible from it. Accuracy in recall of positive vs negative stimuli are compared between those receiving drug and placebo.

The original personality descriptors in the Emotional categorisation task, plus an equal number of matched distractor words, are presented, and participants are asked to indicate whether they recognise it from the Emotional categorisation task. Accuracy and reaction times on positive vs negative stimuli are compared between those receiving drug and placebo.

During a computer-based task, participants are instructed to learn and select which images are associated with wins rather than losses. Accuracy and reaction times are assessed and compared between those receiving drug and placebo.

Changes in high sensitivity-C Reactive Protein (hs-CRP) from baseline to seven-day, comparing those receiving drug and placebo

To comply with the General Data Protection Regulation (GDPR) and the new Data Protection Act, personal data will be deleted as soon as possible after it is no longer needed for the study.
Screening information: For volunteers who do not wish to be contacted for future studies, screening information (including contact details) will be stored for up to one year of completing study analyses, and then destroyed by shredding. Contact details may be retained after the end of the study for participants who have agreed to be contacted for future studies.
Consent forms: Consent forms will be kept for 10 years after the end of the study, and then destroyed by shredding.

University of Oxford

Wellcome Trust

Participants will be randomised, in a double-blind fashion, to either placebo or atorvastatin. The randomisation code will be drawn up by a researcher not involved in the study using an online randomisation tool (https://www.sealedenvelope.com/simple-randomiser/v1/lists).

The atorvastatin drug and the placebo will be encapsulated in identical capsules. Participants will not be aware of the treatment that they will be receiving; neither will the researcher. Allocation of treatments will be recorded on a Randomisation List, which will be updated when each new participant enters the randomised phase. The list will be held by a scientist uninvolved in the study.

The dosage of carvedilol will be gradually increased from the initial recommended starting dose of 3.125 mg twice/daily, the target dose will be 25mg twice daily (50 mg/day) and participants will take 50 mg/day carvedilol for 6 months.Subjects that cannot tolerate the 50 mg daily dose, will be offered to continue at the 25 mg daily dose.

REM Sleep Behavior Disorder

Pre-motor Parkinson Disease

Symptomatic Parkinson Disease

At the end of Baseline visit, carvedilol 3.125 twice daily will be initiated and maintained for 1 week, increased to 6.25twice daily (dispensed at week 1visit), to 12.5mg twice daily (dispensed at week 2) and a max dose of 25mg twice daily (dispensed at week 4 visit), as tolerated. A subject that cannot tolerate at least a 25 mg daily dose will be excluded from the study. Subjects that cannot tolerate the 50 mg daily dose, will be offered to continue at the 25 mg daily dose. The project will include a washout period at study end.

Carvedilol

Cedars Sinai Medical Center

Adrenergic Blockers for Cardiac Changes in Early Parkinson's Disease

The Effect of Adrenergic Blocker Therapy on Cardiac and Striatal Transporter Uptake in Pre-Motor and Symptomatic Parkinson's Disease

123I-MIBG reuptake will be measured by early and late Heart to Mediastinal ratio (H/M) and Washout ratio (WR) which will be calculated using the following formula: [(early heart counts/pixel - early mediastinum counts/pixel) - (late heart counts/pixel decay-corrected - late mediastinum counts/pixel decay-corrected)]/(early heart counts/pixel - early mediastinum counts/pixel). Care will be taken to exclude lung or liver from the myocardial and large vessels and lung from the mediastinum region of interest. MIBG abnormality cutoffs will be set for values of late H/M <2.2 and WR >30%.

Safety will be monitored collecting the type and frequency of adverse events, including clinical symptoms, changes in vital signs, clinical laboratory measures and EKG abnormalities.

Twenty-four-hour Holter monitoring of all patients will be conducted at two points during the study: 1) After MIBG and prior to the administration of the study drug and 2) within one week of the end of the six-month treatment trial. Two-channel Holter recordings will obtained and analyzed on a commercially available scanner in the cardiac laboratory at Cedars Sinai Medical Center, according to published guidelines.

The Movement disorder society-unified Parkinson's disease rating scale (MDS-UPDRS) Part III will be administered at baseline and 26 weeks after study medication titration. Each item of the MDS-UPDRS has a possible rating from 0 to 4, where 0 = normal, 1 = slight, 2 = mild, 3 = moderate, and 4 = severe.Clinical scales will be performed OFF medication in those subjects that might be receiving dopaminergic drugs

RBD questionnaire (RBDSQ) changes from Screening at 26 weeks after study drug titration

University of Pennsylvania Smell Identification Test (UPSIT) changes from screening at 26 weeks after study medication titration

Functional constipation will be assessed at screening and at 26 weeks after study medication titration using a questionnaire based on modified ROME III diagnostic criteria, which focuses on symptoms including straining, lumpy or hard stools, sensation of incomplete evacuation, sensation of anorectal obstruction or blockage, manual maneuvers to facilitate evacuation, and two or fewer bowel movements per week. This questionnaire is based on a six item self-report measures with a three point summated rating scale. The total score has a range of 0 to 12, with scores > 4 identifying functional constipation.

Color vision changes will be assessed using HRR Pseudochromatic Plates from screening at 26 weeks after study medication titration

DaT/SPECT uptake at baseline will be quantified at baseline and 26 weeks after study medication titration

The NMSS measures non-motor symptoms over the previous month. Each symptom is scored with respect to: Severity: 0 = None, 1 = Mild; 2 = Moderate; 3 = Severe and Frequency: 1 = Rarely (<1/wk); 2 = Often (1/wk); 3 = Frequent (several times per week); 4 = Very Frequent (daily or all the time).

The SCOPA-AUT scale consists of 25 items assessing autonomic symptoms in the following regions: gastrointestinal (7), urinary (6), cardiovascular (3), thermoregulatory (4), pupillomotor (1), and sexual (2 items for men and 2 items for women) dysfunction.

Peripheral IR will be defined by testing for fasting plasma insulin (FPI), fasting plasma glucose (FPG) and glycated hemoglobin (HbA1c) from baseline at 26 weeks after study medication titration. HOMA index will be calculated by the formula: HOMA-IR = (FPI x FPG)/405. [A cutoff HOMA index of 2.0, equivalent to <50% sensitivity, will be used to define IR. Subjects were considered to have IR if they either had a HOMA≥2.0 and/or HbA1c≥5.7.

Measures of insulin sensitivity in neuronal-origin enriched plasma EVs (central IR) will be used to test the association of changes in such sensitivity to changes in MIBG uptake and clinical scores from baseline to 26 weeks after carvedilol titration. For that purpose, plasma samples will be collected and stored and -80oC to allow for isolation of neuronal origin EVs at the completion of the study.

Michele Tagliati, MD

Professor of Neurology, Director of Movement Disorders

Treatment: carvedilol titration; Experimental treatment with carvedilol will be offered at stabilized medical treatment. The dosage of carvedilol will be gradually increased from the initial recommended starting dose of 3.125mg twice daily and will be doubled every week according to patient tolerability, as measured by subjective complaints, arterial blood pressure and heart rate. The target dose will be 25mg twice daily (50 mg/day). Subjects that cannot tolerate the 50 mg daily dose, will be offered to continue at the 25 mg daily dose.

anhedonia/infarction

7-day Atorvastatin and Emotional Processing

Adrenergic Blockers for Cardiac Changes in Early Parkinson's Disease

Study of the Hypothalmic-Pituitary-Adrenal (HPA) Axis and Its Role in Major Depression

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