Navigation Links
Grapes may help prevent age-related blindness
Date:1/12/2012

FRESNO, Calif. Can eating grapes slow or help prevent the onset of age-related macular degeneration (AMD), a debilitating condition affecting millions of elderly people worldwide? Results from a new study published in Free Radical Biology and Medicine suggest this might be the case. The antioxidant actions of grapes are believed to be responsible for these protective effects.

The study compared the impact of an antioxidant-rich diet on vision using mice prone to developing retinal damage in old age in much the same way as humans do. Mice either received a grape-enriched diet, a diet with added lutein, or a normal diet.

The result? Grapes proved to offer dramatic protection: the grape-enriched diet protected against oxidative damage of the retina and prevented blindness in those mice consuming grapes. While lutein was also effective, grapes were found to offer significantly more protection.

"The protective effect of the grapes in this study was remarkable, offering a benefit for vision at old age even if grapes were consumed only at young age," said principal investigator Silvia Finnemann, PhD, Department of Biological Sciences, Fordham University in New York.

Dr. Finnemann noted that results from her study suggest that age-related vision loss is a result of cumulative, oxidative damage over time. "A lifelong diet enriched in natural antioxidants, such as those in grapes, appears to be directly beneficial for RPE and retinal health and function."

Age-related macular degeneration is a progressive eye condition, leading to the deterioration of the center of the retina, called the macula. It is the leading cause of blindness in the elderly. Aging of the retina is associated with increased levels of oxidative damage, and oxidative stress is thought to play a pivotal role in the development of AMD.

In AMD, there is a known decline in the function of retinal pigment epithelium cells (RPE), which are the support cells for the photoreceptors in the retina that are critical to the process of converting light into sight. The RPE dysfunction is caused by 1) a build-up of metabolic waste products (known as lipofuscin) in the RPE itself and 2) an oxidation burden on the RPE that compromise important metabolic pathways. The resulting dysfunction, distress and often death of the RPE cells leads to AMD.

This study showed that adding grapes to the diet prevented blindness in mice by significantly decreasing the build-up of lipofuscin and preventing the oxidative damage to the RPE, thus ensuring optimal functioning of this critical part of the retina.

"Preserving eye health is a key concern as we age and this study shows that grapes may play a critical role in achieving this," said Kathleen Nave, president of the California Table Grape Commission. "This is good news for consumers of all ages who enjoy grapes, and adds to the growing body of evidence that grapes offer an array of health benefits."


'/>"/>

Contact: Karen Brux
karenb@grapesfromcalifornia.com
Fleishman-Hillard, Inc.
Source:Eurekalert

Related medicine news :

1. Grapes protect against ultraviolet radiation
2. Trupanion Warns: Grapes and Raisins are Deadly to Cats and Dogs
3. Stenting for stroke prevention becoming safer in high-risk patients
4. Omega-3 fatty acids could prevent and treat nerve damage, research suggests
5. Low-Dose Aspirin to Prevent First Heart Attack or Stroke? Not So Fast
6. Flu Prevention Critical for Those With Neurologic Conditions, CDC Says
7. How can Lyme disease be prevented and controlled?
8. Research!America Chair John Edward Porter says health research and prevention fared well in 2011
9. Journal names discovery that HIV treatment can prevent spread breakthrough of the year
10. Breakthrough in treatment to prevent blindness
11. Screening Alone Not Enough to Prevent Sudden Death in College Athletes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/5/2016)... ... May 05, 2016 , ... A local study examining asthma ... 40 percent of participating fifth-grade students already have or are at risk for ... Research in the Division of Pulmonary, Allergy and Critical Care Medicine at ...
(Date:5/5/2016)... ... 2016 , ... Sun Health registered nurse Brittany Eads and ... Care Transitions program at the 9th Annual Orthopedic and Spine Summit held ... Post-Acute Environment Through Effective Transitions of Care.” , Major changes are taking place ...
(Date:5/5/2016)... ... (PRWEB) May 05, 2016 , ... Talent Tech Labs (TTL) ... the eve of National Nurses Week (May 6-12). Currently, HireNurses is a ... their enrollment into the Talent Tech Lab Virtual Incubation program, they will dramatically expand ...
(Date:5/5/2016)... (PRWEB) , ... May 05, 2016 , ... The Lung Institute will celebrate ... attending a seminar at most clinic locations throughout the month of May. To date, the ... , “The rapid growth that we’ve seen is a testament to the success of this ...
(Date:5/5/2016)... ... May 05, 2016 , ... With May flowers, summer is just around the corner. Summer means ... respite from school and the ability to play all day and night. Parents often lament ... watch the little tykes themselves. Summer also means trips to the beach, backyard cookouts, fireworks ...
Breaking Medicine News(10 mins):
(Date:5/4/2016)... 2016 Yissum Research Development ... today that it had signed an exclusive world-wide licensing ... of novel protein degradation and immunomodulatory drugs for cancer ... drug candidates representing first-in-class therapy for hematologic and solid ... The novel technology was developed by ...
(Date:5/4/2016)... , May 4, 2016 ... of the  "Global Acute Myeloid Leukemia Market ... to their offering.       (Logo: ... Myeloid Leukemia Market and Competitive Landscape Highlights ... Leukemia pipeline products, Acute Myeloid Leukemia epidemiology, ...
(Date:5/3/2016)... , May 4, 2016 Research ... "Global Cancer Stem Cell Therapy Market Outlook 2020" ... http://photos.prnewswire.com/prnh/20160330/349511LOGO ) , ,Recombinant technology has improved significantly ... expected to be developed in coming years. Many cancer ... Cancer stem cell therapies are also expected to be ...
Breaking Medicine Technology: