This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Safety and Tolerability of Antioxidant (AT-001)for Reducing Brain Oxidative Stress

This study has been completed.
Information provided by (Responsible Party):
Alltech Life Sciences Inc. Identifier:
First received: November 14, 2012
Last updated: January 22, 2014
Last verified: January 2014

The purpose of this study is to determine the safety, bioavailability, and effectiveness of an organic yeast-selenium compound in reducing brain oxidative stress. Oxidative stress in the brain has been linked to a variety oif disorders including Alzheimer's disease. Selenium is a very powerful antioxidant that could prove useful in reducing the harmful effects of oxidative stress in the brain and may help prevent diseases such as Alzheimer's. Our recent work has demonstrated that the specific type of selenium compound greatly influences it's ability to enhance brain health and prevent Alzheimer changes in mouse models of this disease.

This study will enroll 24 participants and will allow us to test the hypotheses that yeast-selenium supplementation is safe in the elderly, and that our specific formulation reduces brain oxidative stress.

Condition Intervention Phase
Oxidative Stress Drug: AT-001 Drug: Placebo Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator)
Primary Purpose: Treatment
Official Title: Multiple-ascending Dose Clinical Trial of the Safety and Tolerability of Antioxidant (AT-001) Treatment for Reducing Brain Oxidative Stress

Resource links provided by NLM:

Further study details as provided by Alltech Life Sciences Inc.:

Primary Outcome Measures:
  • Frequency of adverse events [ Time Frame: Baseline to week 14 ]
    Safety and tolerability will be assessed by analysis of adverse events, including symptoms and abnormal findings on physical examinations and standard laboratory tests (serum chemistry, hematology, and urinalysis).

Secondary Outcome Measures:
  • Change in serum selenium levels [ Time Frame: Baseline to week 12 ]
  • Change in cerebrospinal fluid selenium levels [ Time Frame: Baseline to week 12 ]
  • Change in serum, urine, and cerebrospinal fluid isoprostanes [ Time Frame: Baseline to week 12 ]

Enrollment: 24
Study Start Date: March 2012
Study Completion Date: December 2013
Primary Completion Date: October 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: AT-001
Drug: AT-001
Placebo Comparator: Placebo
Matching placebo.
Drug: Placebo

Detailed Description:

Placebo-controlled, single-center, multiple ascending dose study. Approximately 8 healthy volunteers will be enrolled into 3 sequential cohorts, for a total of 24 enrolled subjects.

All subjects will be treated with study drug or placebo for 12 weeks. Subjects will be seen in the clinic for the following visits: Screening, Baseline (Day 1), Day 2, Day 4, Day 7 (Week 1), Week 2, Week 4, Week 6, Week 8,and Week 12 while on study drug. An additional safety visit at Week 14 (two weeks after study drug discontinuation) will be required of study participants.

Subjects will undergo blood draws, urine collection, assessment of vital signs, and review of Serious Adverse Events (SAEs) and Adverse Events (AEs) as well as changes in concomitant medical conditions and medications at every visit.

Routine medical examinations will be performed at study screening and enrollment, Week 1, Week 2, Week 4, Week 6, Week 8, Week 12, and Week 14 visits.

MRI will be performed on all subjects at Screening to ensure safety of lumbar puncture. Research procedures will also include lumbar puncture at the Screening and Week 12 visits.

A designated Data Safety Monitoring Board (DSMB) will evaluate safety in the subjects who have been enrolled and completed a cohort before escalating to the next cohort. The DSMB will review safety data (i.e. any AE or SAE) through Week 14. The committee may also request to review additional data.

The DSMB will also be convened in the event of a dose limiting toxicity (DLT) to determine whether stopping rules for accrual have been met.


Ages Eligible for Study:   65 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Men and women age > 64 years.
  • Not demented by Hachinski Ischemic Index (≤ 4)
  • English-speaking, to ensure compliance with study visit procedures.
  • Female participants must not be pregnant or of childbearing potential, i.e. either surgically sterile or postmenopausal for > 1 year.
  • Stable medical condition for three months prior to screening visit, with no clinically significant abnormalities of hepatic, renal, and hematologic function defined as follows: WBC within normal limits, platelets > 100,000, hemoglobin ≥11 mg/dL, srum creatinine ≤ 1.8 mg/dL, AST or ALT ≤ 1.5 ULN, no clinically significant abnormalities of other laboratory studies (CBC, chemistry panel, urinalysis).
  • Non-diabetic confirmed by fasting serum glucose <126 mg/dL and on no oral hypoglycemic agents or insulin treatment.
  • Stable medications for 12 weeks prior to screening visit.
  • Able to ingest oral medications.
  • No contraindication to baseline MRI (metallic implants, pacemakers, shrapnel…etc.).
  • Physically acceptable for this study as confirmed by medical history, physical exam, neurological exam and clinical tests.

Exclusion Criteria:

  • Significant neurologic disease such as Parkinson's disease, stroke, brain tumor, multiple sclerosis or seizure disorder.
  • Major depression in past 12 months (DSM-IV criteria) major mental illness such as schizophrenia, or recent (in past 12 months) alcohol or substance abuse.
  • History of invasive cancer within the past two years (excluding non-melanoma skin cancer).
  • Contra-indications to lumbar puncture (bleeding disorder, platelet count < 100,000, anticoagulant treatment, major structural abnormality or sepsis in the area of the lumbosacral spine, previous lower back surgery that would make LP technically difficult, hypersensitivity to lidocaine).
  • Other conditions that will contribute to oxidative stress including but not limited to current smokers of cigarettes or cigars (within past month), history of alcohol or drug abuse as determined by medical history review.
  • Known sensitivity, intolerance, or allergies to yeast or selenium-based compounds.
  • Daily intake of more than 75 µg selenium/day (US RDA) in the 90 days prior to enrollment.
  • Use of any investigational agents within 90 days prior to screening.
  • Major surgery within eight weeks prior to the Baseline Visit.
  • Severe unstable medical illnesses, including uncontrolled cardiac conditions or heart failure (New York Heart Association Class III or IV).
  • Extremes of body weight (<100 or >240 lbs) to exclude upper and lower 5th percentiles for age that may influence PK and safety data.
  • Residence in a skilled nursing facility.
  • Blindness, deafness, language difficulties or any other disability that may prevent the subject from participating or cooperating in the protocol.
  • Safety laboratory values deemed clinically significant by investigator.

Excluded Medications:

  • Experimental drugs.
  • Coumadin or heparin.
  • Insulin or other hypoglycemic agents.
  • Supplements containing more than 75 µg selenium/day (US RDA) in the 12 weeks prior to enrollment.
  • The maximum dose of vitamin E (α-tocopherol) permitted in supplements will be 400 IU/day, vitamin C 1000 mg/day.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01731093

United States, Kentucky
University of Kentucky Alzheimer's Disease Research Center
Lexington, Kentucky, United States, 40536
Sponsors and Collaborators
Alltech Life Sciences Inc.
Principal Investigator: Gregory A Jicha, MD, PhD University of Kentucky
Study Director: Ronan Power, PhD Alltech Inc.
  More Information

Responsible Party: Alltech Life Sciences Inc. Identifier: NCT01731093     History of Changes
Other Study ID Numbers: 11-0967-F2L
Study First Received: November 14, 2012
Last Updated: January 22, 2014

Keywords provided by Alltech Life Sciences Inc.:

Additional relevant MeSH terms:
Molecular Mechanisms of Pharmacological Action
Protective Agents
Physiological Effects of Drugs processed this record on June 23, 2017