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:6/4/2019)... ... June 04, 2019 , ... Molecular Devices, ... Susan Murphy as the new President of Molecular Devices, replacing Greg Milosevich who ... company, Danaher Corporation. , Since joining Molecular Devices in a scientific engineering role, ...
(Date:6/4/2019)... , ... June 04, 2019 , ... Lajollacooks4u is delighted ... recipients. The recognition, which honors hospitality excellence, is given only to businesses that have ... Excellence for five consecutive years. , To qualify for the Certificate of ...
(Date:5/31/2019)... ... May 29, 2019 , ... FileWave, the ... mobile, announces the launch of version 13.1. The new version extends FileWave’s mobile ... and supports Apple’s spring release functionality. Version 13.1 builds on FileWave’s version 13 ...
Breaking Biology News(10 mins):
(Date:5/15/2019)... ... 15, 2019 , ... Milton Hershey School® has named William Charles Ballough Harding ... biomedical industry, where he is changing lives by creating solutions to global healthcare challenges ... the vision of our founders – Milton and Catherine Hershey – who always hoped ...
(Date:5/8/2019)... ... May 07, 2019 , ... Standing at 16.2 hands, Atlas is on the large side for ... team and barrel racing, among other activities. When loping around a corner in late ... being a busy horse to only being able to walk. Fortunately Atlas’ owner, Kelly, ...
(Date:5/2/2019)... (PRWEB) , ... April 30, ... ... the International Organization for Standardization ISO 9001:2015 standard, REPROCELL USA Inc. has ... customer requirements. In addition, REPROCELL USA Inc. aims to enhance customer satisfaction ...
(Date:5/2/2019)... ... May 02, 2019 , ... ... in the greater Boston area. Gone are the days of painful hair transplant ... Robotic Hair Restoration System is the only robotic intelligent solution to offer a ...
Breaking Biology Technology:
Cached News: