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Effect of Lutein-enriched-egg Beverage on Age-Related Macular Degeneration (AMD)

NCT ID: NCT00902408

Last Updated: 2013-11-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-07-31

Study Completion Date

2011-12-31

Brief Summary

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After a pilot trial where we showed an substantial increase in plasma lutein levels and a increase in macular pigment optical density after only 3 months of daily consumption of a lutein-enriched egg-beverage, we now propose to study the effect these changes have on subjects with early ( undiagnosed) stages of macular degeneration. Age-related macula degeneration, is the leading cause of blindness in many developed countries\[1-6\] in older persons (usually over 55 years of age). Visual compromise rises exponentially after age of 70\[7\] with a 5-year incidence of around 1%. The incidence of bilateral AMD in persons with unilateral late ARM observed over a period of 10 years of over 50% with a 2.1-2.8% overall incidence in study population\[8\]. To date there is no curative way of fighting AMD. With the results of this trial we hope to show that with daily consumption of these enriched beverage, we can slow the progression of AMD. (Protocol page 8-10)

Detailed Description

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Rationale: In our pilot study (MEC 07-1-127) we saw an increase in both plasma as macular levels of lutein and zeaxanthin. Current believe is that this increase might help against the further deterioration of the retina seen in age-related macular degeneration (AMD) by scavenging for free radicals and filtering out harmful blue light rays\[1, 2\]. For the purpose of establishing whether these believes hold some truth, we want now to investigate the effect of lutein and zeaxanthin increase in subject with early signs of AMD on visual acuity, visual field and contrast sensibility. To relate these results to our previous study we will also measure the changes in plasma and macular concentrations of these xanthophylls. Once more we will be using the egg-beverage from the pilot study. These have been proven safe and showed no changes in lipid levels after 3 months of consumption.

Objective: To assess whether there is the same increase in macular pigment optical density as in healthy subject and to see if there is any change in visual function after a year of intervention.

Study design: This will be a randomized, double blind, placebo controlled, interventional trial. Subjects will be randomized, stratified for gender and age, into two groups (N=50 each) receiving either the intervention product (base on 1.5 yolk of a lutein enriched egg containing 0.921 ± 0.106mg of lutein and 0.137 ± 0.014mg of zeaxanthin per yolk) or a placebo. Subject will be followed for 1 year and will be seen three times for measurements.

Study population: 100 subjects, ages 50 and older with drusen and/or Retinal pigment epithelium (RPE) alterations on retinal image.

Main study parameters/endpoints: Changes in amount of early macular degeneration signs on fundus photographs. Macular pigment optical density. Plasma lutein and zeaxanthin levels.

Nature and extend of the burden and risks associated with participation, benefit and group relatedness: Subjects will be seen three times with a total of 22 ( + 1 hour screening) hours. Methods used in this trial are commonly used techniques which have been proven safe in either previous trials or clinical practice. Subjects' sight will be limited for the investigated eye for a few hours after every visit because of the use of Tropicamide, this is standard practice at our ophthalmology department with only sporadic, and treatable side effects (acute angle-closure glaucoma in 0.03%). Subjects in the intervention group are expected to show a slower progression of the disease than those in the placebo group. We will be using the same egg-beverage as in the pilot study which showed no changes in lipid levels.

Conditions

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Age Related Macular Degeneration

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Lutein

Lutein enriched eggs

Group Type EXPERIMENTAL

Lutein enriched eggs

Intervention Type DIETARY_SUPPLEMENT

1 year of daily enriched lutein eggs or placebo

Placebo

Non enriched

Group Type PLACEBO_COMPARATOR

Lutein enriched eggs

Intervention Type DIETARY_SUPPLEMENT

1 year of daily enriched lutein eggs or placebo

Interventions

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Lutein enriched eggs

1 year of daily enriched lutein eggs or placebo

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Early signs of AMD on fundus photographs (drusen and or retinal pigment epithelium alterations in at least one eye)
* 50 years and older
* Vision \> 0.5
* Non-smoker
* No ocular media opacity
* Uses no nutritional supplements containing Lutein or Zeaxanthin
* BMI \< 30
* No known cardiovascular disease

Exclusion Criteria

* Diabetes
* Known lipid metabolism disease
* Blood lipid level modifiers (e.g. Statin)
* Known allergy to eggs or egg products
Minimum Eligible Age

55 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Newtricious

UNKNOWN

Sponsor Role collaborator

Maastricht University Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Elton Kellly, MD

Role: PRINCIPAL_INVESTIGATOR

Maastricht University Medical Center

Locations

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University Eye Clinic Maastrich

Maastricht, Limburg, Netherlands

Site Status

Countries

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Netherlands

References

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van der Made SM, Kelly ER, Berendschot TT, Kijlstra A, Lutjohann D, Plat J. Consuming a buttermilk drink containing lutein-enriched egg yolk daily for 1 year increased plasma lutein but did not affect serum lipid or lipoprotein concentrations in adults with early signs of age-related macular degeneration. J Nutr. 2014 Sep;144(9):1370-7. doi: 10.3945/jn.114.195503. Epub 2014 Jul 2.

Reference Type DERIVED
PMID: 24991045 (View on PubMed)

Other Identifiers

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MEC 07-1-127

Identifier Type: -

Identifier Source: org_study_id