Navigation Links
Vision Abnormality Seen in Close Relatives of Autism Patients
Date:8/2/2010

By Randy Dotinga
HealthDay Reporter

MONDAY, Aug. 2 (HealthDay News) -- In another sign that autism is at least partly inherited, a new study reveals that close relatives of people with the disorder share something in common: their eyes are much more likely than those of other people to function abnormally.

"There are brain abnormalities that run in families with autism," said study co-author John A. Sweeney. "These findings might be telling us that there's an important genetic contribution to autism."

The causes of autism, which affects an estimated one in 110 children in the United States, are unclear, according to the U.S. Centers for Disease Control and Prevention. The number of children diagnosed with the disorder has risen in recent years, but it's not clear if that's largely due to more awareness or some other factor, such as something in the environment around these children.

Previous research has suggested that family members of autism patients are more likely to have some minor brain impairments than other people, said Geraldine Dawson, chief science officer of Autism Speaks, an advocacy organization.

In the new study, researchers looked for signs of eye abnormalities that are common in people with autism. They often have difficulty tracking moving objects in the first milliseconds that they look at those objects, explained Sweeney, director of the Center for Cognitive Medicine at the University of Illinois at Chicago.

The abnormalities are minor and probably have no significant impact on vision, Sweeney said. "These parents are walking around fine, and it's unlikely that these [abnormalities] are going to affect anyone's life."

Still, the vision abnormality suggests that something has gone awry in the brain.

Sweeney and colleagues studied the eye movements of 57 close relatives -- 42 parents and 15 siblings of people with autism. They compared them to 40 other people who were similar to them in age, gender and IQ but weren't close relatives of people with autism.

More than 50 percent of the family members of people with autism showed different signs of abnormal eye movements, Sweeney said. In the general population, about 5 percent of people might have the abnormalities, he added.

Essentially, the study suggests relatives of people with autism share an abnormality in the brain that, for them, didn't fully develop into autism.

Sweeney acknowledged that the study doesn't shed light on exactly how responsible genetics are for autism. Still, the findings fit in with research "that suggests the problems in autism are much more the results of genetic than environmental factors," he said.

The study also provides evidence that the genes thought to carry the risk for autism specifically affect parts of the brain such as the cerebellum and frontal cortex, Dawson said.

The study findings are published in the August issue of the Archives of General Psychiatry.

More information

For more on autism, try the U.S. National Institute of Neurological Disorders and Stroke.

SOURCES: John A. Sweeney, Ph.D., director, Center for Cognitive Medicine, University of Illinois at Chicago; Geraldine Dawson, Ph.D., chief science officer, Autism Speaks, New York City; August 2010, Archives of General Psychiatry


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Nanofilm Introduces Clarity Defog It™ Anti Fog Treatment and EcoClens™ Eco-Friendly Lens Cleaner at Vision Expo East
2. Dr Yaghouti of Global Laser Vision Receives Patient's Choice Award for 2009
3. Majority of Americans Approve of President Obamas Handling of Afghanistan and National Security But Disapprove of Handling of Economic Issues, Per Franklin & Marshall College Poll With Hearst Television
4. The Icebox of Atlanta Selected as T-shirt Vendor for 3 Major Divisions of American Cancer Society's Relay For Life
5. Embark Health Selects the Jellyvision Lab's Interactive Conversation Technology to Educate Website Visitors on Advance Directives
6. CIBA VISION Partners with TLC's Carmindy to Educate Consumers About Healthy Eye Habits
7. Transitions Championship Announces Strongest Field to Date and a Vision Like No Other on the PGA TOUR(R)
8. Aerohive Positioned in the “Visionaries” Quadrant of the Magic Quadrant for Wireless LAN Infrastructure
9. Abington Memorial Hospital Welcomes Vakil to Orthopaedic Surgery Division
10. Untreated poor vision in elderly linked to dementia, University of Michigan study shows
11. Chickens May Provide Clues to Color Vision
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Vision Abnormality Seen in Close Relatives of Autism Patients
(Date:2/23/2017)... ... (PRWEB) February 23, ... the nation to come together to combine its favorite springtime ... its favorite fruit – apples! To celebrate National Nutrition Month, ... the “Apple Madness” bracket tournament – a five-week, five-round online ...
(Date:2/23/2017)... MN (PRWEB) , ... February 23, 2017 , ... HealthPostures, ... is sending an expert sit stand solutions representative to the Minneapolis Home and Garden ... Location for the event that is garnering national attention is the Minneapolis Convention Center. ...
(Date:2/22/2017)... ... 22, 2017 , ... Our high-octane society demands higher stands ... brain. , Power On, a mental performance enhancer from Modus Nutrition, provides scientifically ... capsule contains Cognizin® Citicoline, a branded form of the brain health nutrient citicoline ...
(Date:2/22/2017)... ... February 22, 2017 , ... Secure Exchange ... the largest network of hospitals, health information exchanges, physicians and patients, announced today ... Technology (ONC-HIT) 2015 Edition Health IT Module Certification via Drummond Group LLC, an ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... advanced data analytics to accurately understand each Medicare Advantage member’s risk, identify ... given population. This new solution helps transform the HCC Risk Adjustment process ...
Breaking Medicine News(10 mins):
(Date:2/23/2017)... -- LG Innotek hat heute die weltweit erste 70 mw ... 1,5-fache des 45-mW-Moduls der Konkurrenz. UV-C LED ... 280 nm und eignet sich damit für Sterilisationsaufgaben. Es verhindert ... Das Produkt von LG Innotek erzeugt UV-Strahlung im Bereich ... ...
(Date:2/23/2017)... China , 23. Februar 2017 Im ... , eine nationale Wirtschaftszone in der südwestlichen chinesischen Provinz Guizhou, ... der Errichtung einer Innovationsplattform aktiv an der Entwicklung einer eingebetteten ... Continue Reading ... ...
(Date:2/23/2017)... COTTAGE, New York , February 23, 2017 /PRNewswire/ ... health implications arising from increasing caseload for varicose veins ... recorded across the globe are prompting the adoption of ... latest study on global endovenous laser therapy ... attention towards aftereffects of lifestyle choices and consequences of ...
Breaking Medicine Technology: