HOME >> BIOLOGY >> NEWS
Study Ensures Effective Ways To Measure Macular Pigment Density

(FT. LAUDERDALE, Fla., May 9, 1999) - Dietary lutein and zeaxanthin are the major determinants to explain macular pigment optical density (MPOD), according to research presented today at the Association for Research in Vision and Ophthalmology 1999 annual meeting. The study was the largest ever conducted to examine the relationship between dietary, medical, physical and lifestyle factors, and macular pigment density, thought to be protective in age-related macular degeneration (AMD).

"Results confirmed and expanded upon what's already known about the determinants of macular pigment density. Dietary lutein and zeaxanthin explained the greatest amount of macular pigment density variance, followed by serum lutein levels," said Thomas Ciulla, M.D., Retinal Specialist, Indiana University School of Medicine and Ophthalmology Department in Indianapolis, Ind.

Ciulla and his colleagues examined the MPOD of a cross sectional population of 280 healthy men and women in Indianapolis. They determined that dietary lutein and zeaxanthin, serum lutein and eye color are the factors most strongly associated with macular pigment density. Ciulla cautions, however, that, taken together, these factors explained only 19.7 % variance in MPOD.

Lutein and zeaxanthin are concentrated in retinal macular pigment and accumulation is thought to be dependent on dietary intake. Macular pigment may filter blue light that damages photoreceptors and the retinal pigment epithelium. In addition, carotenoids may limit oxidant stress resulting from metabolism and light, acting as antioxidants.

In this study, serum concentrations for lutein, zeaxanthin and beta-carotene were measured by HPLC, and MPOD was measured by heterochromatic flicker photometry. Dietary patterns and demographic/medical characteristics were determined by questionnaire. This method of study was a non-invasive way to measure MPOD and also showed that MPOD can be rel
'"/>

Contact: Anne Tramer
atramer@selz.com
312-372-7090
Selz/Seabolt Communications
8-May-1999


Page: 1 2

Related biology news :

1. Study: Emission of smog ingredients from trees is increasing rapidly
2. Study explores gene transfer to modify underlying course of Alzheimers disease
3. Study reveals why eyes in some paintings seem to follow viewers
4. Study by Israeli scientists provides insight on DNA code
5. Study reveals first genetic step necessary for prostate cancer growth
6. Study of flu patients reveals virus outsmarting key drug
7. Study in Science reveals recreational fishing takes big bite of ocean catch
8. Study suggests cell-cycle triggers might be cancer drug targets
9. Study narrows search for genes placing men at increased risk for prostate cancer
10. Study links high carbohydrate diet to increased breast cancer risk
11. Study explains spatial orientation differences between sexes

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/26/2016)... India and LONDON ... Infosys Finacle, part of EdgeVerve Systems, a product ... and Onegini today announced a partnership to integrate ... solutions.      (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ... to provide their customers enhanced security to access ...
(Date:4/14/2016)... AVIV, Israel , April 14, 2016 ... Behavioral Authentication and Malware Detection, today announced the appointment ... already assumed the new role. Goldwerger,s leadership ... BioCatch, on the heels of the deployment of its ... addition, BioCatch,s behavioral biometric technology, which discerns unique cognitive ...
(Date:3/23/2016)... Massachusetts , March 23, 2016 /PRNewswire/ ... im Interesse erhöhter Sicherheit Gesichts- und Stimmerkennung ... Xura, Inc. (NASDAQ: MESG ), ... bekannt, dass das Unternehmen mit SpeechPro zusammenarbeitet, ... aus der Finanzdienstleistungsbranche, wird die Möglichkeit angeboten, ...
Breaking Biology News(10 mins):
(Date:4/28/2016)... ... April 28, 2016 , ... As part of an ... experts, and expanding its LATAM network and logistics capabilities. Enhancements have been ... their clinical trial projects. , The expansion will provide unmatched clinical trial logistics ...
(Date:4/27/2016)... New York, NY (PRWEB) , ... April 27, ... ... without realizing it. Touch screen mobile devices with fingerprint recognition for secure ... image libraries are only a few ways consumers are interacting with biometrics technology ...
(Date:4/27/2016)... ... April 27, 2016 , ... ... to its Scientific Advisory Board. Dr. Lamka will assist PathSensors in expanding the ... , PathSensors deploys the CANARY® test platform for the detection of harmful ...
(Date:4/27/2016)... , April 27, 2016 ... research report with specific focus on US, EU, ... Japan , to the healthcare business intelligence ... library. Complete report on the Flow ... companies and supported with 282 tables and figures ...
Breaking Biology Technology:
Cached News: