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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02541929
Other study ID # HS-14-00864
Secondary ID
Status Completed
Phase Phase 2/Phase 3
First received
Last updated
Start date June 30, 2016
Est. completion date September 30, 2019

Study information

Verified date March 2020
Source University of Southern California
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Docosahexaenoic acid (DHA) is an essential omega-3 fish oil. DHA is critical to the structure and function of brain cells.

DHA fish oil has been shown to be beneficial in cognition in several animal studies; however, this effect in human studies is not clear. It is not known how much dietary fish oil can get into the human brain. Thus, exploring fish oil delivery in human brains is critical for designing appropriate interventions.


Description:

- The investigators goal is to study how different people deliver DHA to the brain.

- The study will only require two visits six months apart and involve taking DHA during these 6 months.

- Participants will receive DHA supplements for the study duration and a compensation for each study visit.

- Blood and cerebrospinal fluid levels of DHA will be measured before and after taking DHA.

- Brain imaging by MRI will be obtained at baseline and at conclusion of study

- This study will help us learn how much of the ingested DHA goes to the brain.


Recruitment information / eligibility

Status Completed
Enrollment 31
Est. completion date September 30, 2019
Est. primary completion date November 30, 2018
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 55 Years and older
Eligibility Inclusion Criteria:

- ages 55 and above

- at risk of Alzheimer's disease such as family history of dementia

- women have to be postmenopausal

Exclusion Criteria:

1. Current smokers (or a recent history of smoking within less than 5 years),

2. Having a history of cardiovascular disease defined by a prior heart attack, coronary bypass or percutaneous luminal angioplasty, kidney failure or blindness.

3. a diagnosis of cancer in the past 6 months, uncontrolled hyper- or hypothyroidism

4. Taking anti-coagulants such as warfarin

5. Anyone consuming n-3 PUFA capsules for the last 3 months.

6. regular exercisers (>5 X30min of aerobic exercise per week),

7. heavy drinkers (>30 units of alcohol per week). One unit of alcohol is about equal to: half a pint of ordinary strength beer, lager or cider (3-4% alcohol by volume); or. a small pub measure (25 ml) of spirits (40% alcohol by volume); or. a standard pub measure (50 ml) of fortified wine such as sherry or port (20% alcohol by volume)

8. If participants have scores that lie 2 SD outside the means of the neuropsychiatry tests administered, they will have mild cognitive impairment. Participant's with mild cognitive impairment are excluded from this study.

Study Design


Related Conditions & MeSH terms


Intervention

Dietary Supplement:
Docosahexaenoic acid


Locations

Country Name City State
United States USC Keck School of Medicine Los Angeles California

Sponsors (2)

Lead Sponsor Collaborator
University of Southern California Alzheimer's Association

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary changes in DHA levels in the CSF following dietary DHA supplementation 6 months
Secondary Brain MRI Structural and functional connectivity 6 months and 1 year
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