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Parkinson DiseaseNCT02445651

Physiological Effects of Nutritional Support in Patients With Parkinson's Disease

A study testing Intravenous and Oral n-acetyl cysteine and Oral Supplements: Baicalin, Ganoderma, Omega 3 and Curcumin in people with Parkinson Disease and Idiopathic Parkinson Disease, run by Thomas Jefferson University at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Parkinson's disease (PD) is a neurodegenerative disorder of unknown cause that affects more than a million Americans. It's most prominent pathology is the degeneration of dopaminergic neurons in the brain. Read more about this study

Who is it for?
Ages 30 to 80 years
What is being tested?
Intravenous and Oral n-acetyl cysteine and Oral Supplements: Baicalin, Ganoderma, Omega 3 and Curcumin
Could I receive a placebo?
No, everyone receives an active treatment
How many people
51 participants
Where
1 siteUnited States
Study dates
Mar 2014to 4 Aug 2022
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 30 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Clinical Diagnosis of Parkinson's disease
  • Subject is between 30 - 80 years of age
  • Subject has a Hoehn and Yahr score of I - II inclusive
  • Subject is on stable or on antiparkinsonian medication for at least a month
  • Women of Childbearing potential will confirm a negative pregnancy test

Who cannot join

  • Subject is allergic to iodine, cobalt, or any of the supplements that will be given in the study
  • Subject has had previous brain surgery
  • Subject has a score of 25 or less on Mini-Mental Status examination
  • Subject is wheelchair-bound or bed-ridden; non ambulatory
  • Subject has intracranial abnormalities that may complicate interpretation of the brain scans(e.g., stroke, tumor, vascular abnormality affecting the target area)
  • Subject has a history of head trauma with loss of consciousness greater than 48 hours
Show all 22Show fewer
  • Subject has any medical disorder or physical condition that could reasonably be expected to interfere with the assessment of parkinsonian syndrome symptoms, or with any of the study assessments including the SPECT imaging.
  • Subject has evidence of a significant psychiatric disorder by history/examination that would prevent completion of the study
  • Subject has a current alcohol or drug abuse
  • Subject is pregnant or lactating
  • Subject is enrolled in active clinical (drug or device) trial within the prior 30 days
  • Subject is pending surgery during the course of the study
  • History of very low blood pressure
  • History of thrombocytopenia or clotting disorders
  • Cancer patients receiving active chemotherapy
  • History of active gallstone problems or a bile duct obstruction
  • History of uncontrolled diabetes, asthma, gastroesophageal reflex disease, or thyroid
  • History of severe kidney disease (if the patient reports this problem, a serum creatinine will be checked to assess GFR; if it is less than 30, the patient will be excluded)
  • History of Leber's disease, a hereditary eye disease
  • History of uncontrolled hypercalcemia
  • History of active sarcoidosis, histoplasmosis, or lymphoma
  • Patients taking medication that might interact with the supplements involved in this study will be evaluated on a case-by-case basis by PI study physician

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Thomas Jefferson University

    Philadelphia, Pennsylvania, 19107

Other trials in United States

About this study

Parkinson's disease (PD) is a neurodegenerative disorder of unknown cause that affects more than a million Americans. It's most prominent pathology is the degeneration of dopaminergic neurons in the brain. It is believed that oxidative stress and inflammation play an important role in the pathophysiology of Parkinson's disease as well.

The object of this study is to evaluate whether nutritional supplementation with oral and IV N acetyl cysteine compounds, that have been shown to have either anti- inflammatory, or antioxidant effects, might support brain function in patients with Parkinson's disease, particularly in regards to the dopamine system. Enrolled patients will be randomly assigned to receive oral and intravenous (IV) n-acetyl cysteine (NAC), a control group of standard PD care, or an oral supplement group who will receive Oral Supplements Cohort Baicalin, Ganoderma, Omega 3 and Curcumin. (Please note, the Oral Supplements arm, was amended and not included in analysis.

This study utilized Ioflupane (DaTscan) single photon emission computed tomography (SPECT) to measure dopamine function, magnetic resonance spectroscopy (MRS) to measure inflammatory and oxidative stress markers, and neurological measures to assess clinical symptoms, in patients with PD. Subjects received a DaTSCAN and MRS initially and after completing oral and IV NAC regimen. Subjects in the control group received pre and post DaTScans and MRS and similar evaluations to the Dietary Supplement oral and IV NAC group.

Read the detailed description

The first arm of this study received intravenous and oral NAC, which is a strong antioxidant that increases brain glutathione, which may be beneficial in PD. NAC, is the N-acetyl derivative of the naturally occurring amino acid, L-cysteine. NAC is a common over-the-counter supplement and also is available as an injectable pharmaceutical that protects the liver in cases of acetaminophen overdose. Laboratory studies have displayed some benefits to use of NAC, such as its potential to counteract intracellular damage that leads to dopaminergic neuron death. It also has the potential to reduce markers of oxidative damage, protect against dopamine cell death from MPTP toxicity, and to increase glutathione in blood, which might be useful in preventing oxidative damage in PD patients.

The second arm was a waitlist control group who received no intervention. The control group continued to receive clinical standard of care treatment for PD care provided by their neurologist.

A third arm of the study was an oral supplement group who received Oral Supplements Cohort Baicalin, Ganoderma, Omega 3 and Curcumin.This oral supplement group continued to receive clinical standard of care treatment for PD provided by their neurologist.

The protocol was amended to include only the NAC arm and the standard of care waitlist control groups.

Being tested
Intravenous and Oral n-acetyl cysteine, Control group, Oral Supplements: Baicalin, Ganoderma, Omega 3 and Curcumin
Keywords
Integrative Medicine, Alternative Medicine, Complementary Medicine, Parkinson's disease, Neurodegenerative Diseases, Idiopathic Parkinson's disease, Single Photon Emission Computed Tomography (SPECT), Central Nervous System Diseases, Movement Disorders, Nervous System Diseases, Brain Diseases, Oral supplements, N-acetyl cysteine
Medical subject headings
Parkinson Disease, Neurodegenerative Diseases, Central Nervous System Diseases, Movement Disorders, Nervous System Diseases, Brain Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Intravenous and Oral n-acetyl cysteineDietary supplement

  • Control groupOther

    Standard of Care

  • Oral Supplements: Baicalin, Ganoderma, Omega 3 and CurcuminDietary supplement

    Baicalin 400mg (Narula Reasearch) 2 x per day Curcumin Phytosome 500mg (Thorne Research) 2 x per day Omega 3 Acids - ProEPA (Nordic Naturals) 1 x per day Ganoderma - Reishi Extract 500mg by Vital Nutrients (REIS8) 2 caps 2x per day Frequency: over one hour 1 x per week for 90 days ± 30 days

Study groups in NCT02445651
Study groupRoleWhat they receive
Oral and IV N acetyl Cysteine CohortExperimentalAdministration of Intravenous (IV) and Oral N-acetyl Cysteine (NAC) Intervention: IV NAC infusion: Dose: 50mg in 200ml of D5W, frequency: over one hour 1 x per week for 90 days ± 30 days AND Oral N-acetyl Cysteine - one 600 mg tablet 2 x per day (on days IV N-acetyl cysteine is not administered)
Receives: Dietary Supplement: Intravenous and Oral n-acetyl cysteine
Control CohortActive comparatorStandard of Care Treatment
Receives: Other: Control group
Oral Supplements Cohort Baicalin, Ganoderma, Omega 3 and CurcuminActive comparatorBaicalin 400mg (Narula Reasearch) 2 x per day Curcumin Phytosome 500mg (Thorne Research) 2 x per day Omega 3 Acids - ProEPA (Nordic Naturals) 1 x per day Ganoderma - Reishi Extract 500mg by Vital Nutrients (REIS8) 2 caps 2x per day Frequency: over one hour 1 x per week for 90 days ± 30 days The protocol was amended; this cohort was not included in analysis that was reported in results.
Receives: Dietary Supplement: Oral Supplements: Baicalin, Ganoderma, Omega 3 and Curcumin

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Distribution Volume Ratio

    Distribution Volume Ratio reflects Iofluvane absorption by the dopamine transporters (Dopamine Uptake) that reflects binding in the dopamine transporter (DAT) overall. Striatal Binding Ratio in the regions of interest (ROI), caudate, putamen, and midbrain Serotonin Transporter (SERT) binding and Dopamine Transporter (5-HTT) Binding was measured during Single Photon Emission Computed Tomography (SPECT) Brain Imaging with DATScan (Iofluvane). Regions of interest in the caudate, putamen and in midbrain SERT binding are affected in Parkinson's Disease. Less dopamine transporter binding (lower number) indicates less activated dopamine transporters (worse); more binding (higher number) indicates more binding (better), thus, measuring the overall health of the dopaminergic system in the brain.

    Analysis was completed only for the Oral and IV N acetyl Cysteine Cohort and Control Cohort; the Oral Supplements arm of the study was discontinued and not included in analysis

    Measured: Baseline and 90 ± 30 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 May 2015 (estimated)
  2. Study startMar 2014
  3. Primary completion4 Aug 2022
  4. Study completion4 Aug 2022

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Supportive care
Allocation
Randomised
Intervention model
Parallel groups
Model description
To evaluate whether IV/oral N acetyl cysteine, compared to standard of care ,no intervention, (or the discontinued oral supplementation arm) helps support dopamine function in the brains of patients with Parkinson's disease measured using Iofluvane (DATScan); clinical symptoms will be measured.
Masking
None (open label)
Enrolment
51 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02445651
Sponsor's protocol ID
14D.141
Status last verified
Nov 2025
First submitted
23 Jan 2015
Last updated
15 Dec 2025
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: After each participant completes the study, study scan data will be shared with co-investigators; participants may receive a copy of each scan after study completion.

Publications

  • Monti DA, Zabrecky G, Kremens D, Liang TW, Wintering NA, Cai J, Wei X, Bazzan AJ, Zhong L, Bowen B, Intenzo CM, Iacovitti L, Newberg AB. N-Acetyl Cysteine May Support Dopamine Neurons in Parkinson's Disease: Preliminary Clinical and Cell Line Data. PLoS One. 2016 Jun 16;11(6):e0157602. doi: 10.1371/journal.pone.0157602. eCollection 2016.

    PubMed 27309537
  • Monti DA, Zabrecky G, Kremens D, Liang TW, Wintering NA, Bazzan AJ, Zhong L, Bowens BK, Chervoneva I, Intenzo C, Newberg AB. N-Acetyl Cysteine Is Associated With Dopaminergic Improvement in Parkinson's Disease. Clin Pharmacol Ther. 2019 Oct;106(4):884-890. doi: 10.1002/cpt.1548. Epub 2019 Jul 17.

    PubMed 31206613

Questions about this trial

What is this clinical trial studying?

A study testing Intravenous and Oral n-acetyl cysteine and Oral Supplements: Baicalin, Ganoderma, Omega 3 and Curcumin in people with Parkinson Disease and Idiopathic Parkinson Disease, run by Thomas Jefferson University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 22 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 15 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 15 Dec 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Distribution Volume Ratio (time frame: Baseline and 90 ± 30 days). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02445651, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 Dec 2025.

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