Navigation Links
New Clues to the Evolution of the Human Brain
Date:5/3/2012

THURSDAY, May 3 (HealthDay News) -- New research suggests that a partial duplication of a gene played a significant role in a major advance in human brain evolution that occurred a few million years ago.

The SRGAP2 gene has been duplicated at least twice during human evolution, first about 3.5 million years ago and again about 2.5 million years ago. The second duplication produced only a partial copy of the gene, the study authors said.

This partial copy acts at exactly the same time and place as the original gene, allowing the partial copy to interact with and block the original gene's function, according to the findings published online May 3 in the journal Cell.

The partial copy of the SRGAP2 gene seems to have appeared at the same time that the fossil records show a transition from our extinct Australopithecus ancestors to the genus Homo, which led to and includes modern humans.

This point in human evolution is also when our ancestors' brains began to expand and major advances in intelligence likely occurred, according to Franck Polleux, an expert in brain development at Scripps Research Institute in La Jolla, Calif., and Evan Eichler, a genome scientist at the University of Washington in Seattle.

The researchers said that SRGAP2 and other human-specific gene duplicates may explain why humans are much more intelligent than other primates, despite few apparent differences in their genome sequences.

"We may have been looking at the wrong types of mutations to explain human and great ape differences," Eichler said in a journal news release. "These episodic and large duplication events could have allowed for radical -- potentially earth-shattering -- changes in brain development and brain function."

The findings also may provide clues to neurodevelopmental disorders, including autism, epilepsy and schizophrenia, the researchers said.

More information

The U.S. Institute o
'/>"/>

Copyright©2010 ScoutNews,LLC.
All rights reserved  

Page: 1 2

Related medicine news :

1. Geisel researchers sift through junk to find colorectal cancer clues
2. Clues to Slacker Behavior Found in Brain, Study Says
3. Research yields new clues to how brain cancer cells migrate and invade
4. Ice Cream Headaches Might Offer Clues to Migraines
5. Study of half siblings provides genetic clues to autism
6. Researchers uncover new clues to the development of blood and other cancers
7. Newly identified stem cells may hold clues to colon cancer
8. Novel mouse model for autism yields clues to a 50-year-old mystery
9. New Clues to Link Between Fatty Diet, Colon Cancer
10. Protein structures give disease clues
11. New Genetic Clues to Breast Cancer?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New Clues to the Evolution of the Human Brain
(Date:12/25/2014)... 25, 2014 (HealthDay News) -- The risk of burns ... so you need to be extra cautious, an expert ... see a significant increase in patients coming in with ... Suffolk County Volunteer Firefighters Burn Center of Stony Brook ... be full of joy, but if not careful, could ...
(Date:12/25/2014)... Dennis Thompson HealthDay ... Researchers could be closing in on a "fountain of youth" ... the health of older adults, a new study suggests. ... given a drug that targets a genetic signaling pathway linked ... Novartis report. The experimental medication, a version ...
(Date:12/25/2014)... “ SmileStix ” was featured on NewsWatch ... and coolest mobile applications on the iOS, Android, and Windows ... NewsWatch, conducted the app review and shared with viewers how ... , The old saying goes, “A picture says a thousand ... can describe a single image, because each picture holds a ...
(Date:12/25/2014)... CA (PRWEB) December 25, 2014 Each ... visits and 2 million hospital admissions across the nation ... Prevention ). The CDC’s National Hospital Ambulatory Medical ... through a survey conducted in 2010. They estimated that ... visits that resulted in a primary diagnosis of broken ...
(Date:12/24/2014)... December 25, 2014 Over 700 toys, ... their local communities. That is 700 smiling little faces ... gift. Additionally over $6000 in monetary donations was given ... some of the expenses they incur through the year. ... were A Child's Haven , Shrine's Children's Hospitals, ...
Breaking Medicine News(10 mins):Health News:Don't Let Burns Mar Your Holidays 2Health News:Researchers Take 'First Baby Step' Toward Anti-Aging Drug 2Health News:Researchers Take 'First Baby Step' Toward Anti-Aging Drug 3Health News:An Application to Create Custom Stickers was Featured on NewsWatch Television on December 19, 2014 2Health News:Every Year Four Million Emergency Department Visits Result from Accidents Involving Bone Trauma 2Health News:Every Year Four Million Emergency Department Visits Result from Accidents Involving Bone Trauma 3Health News:Every Year Four Million Emergency Department Visits Result from Accidents Involving Bone Trauma 4Health News:AlignLife Donates Over 700 Toys This Year 2
... , PROVO, Utah , Jan. 19 ... announced that it will release fourth quarter financial results prior to the ... Hunt , president and chief executive officer, will host a conference call ... a.m. (EDT) . During the call, participants can expect to hear management ...
... , ANN ARBOR, Mich. , ... and MEDITECH have collaborated to offer content from the Micromedex ... Care Information System (HCIS) — Emergency Department Management, Physician Care ... one of the Micromedex clinical evidence solutions from Thomson Reuters, ...
... , ATLANTA , Jan. 19 ... of the Unit of Interventional Radiology at the European Institute ... 2010 Best Poster Award by Dr. Shaun Samuels , ... Embolization Combined with Radiofrequency Ablation for Treating Complex Hepatic Tumors. ...
... health care, particularly at the end of life, may incite ... Hopkins emeritus professor of neurology called for the start of ... month,s issue of the Journal of Medical Ethics . ... Emeritus of Pediatric Neurology and a faculty member of the ...
... infection, researchers find , TUESDAY, Jan. 19 (HealthDay News) -- ... treatment for sickle cell disease, a common genetic disorder, new ... in the Journal of Clinical Investigation , are based ... with the disease will benefit from treatment with statins. ...
... chromosome component, research shows , TUESDAY, Jan. 19 (HealthDay ... of the reasons why omega-3 fatty acids are good for ... heart disease consumed, the slower their telomeres shrank. Telomeres are ... the more times a cell divides, making them a marker ...
Cached Medicine News:Health News:Nu Skin Enterprises to Announce Fourth Quarter and Annual 2009 Results 2Health News:Micromedex CareNotes Available Within the MEDITECH Health Care Information System 2Health News:Micromedex CareNotes Available Within the MEDITECH Health Care Information System 3Health News:Orsi Awarded First Place for Procedure with Embozene(TM) Microspheres 2Health News:Reasoning through the rationing of end-of-life care 2Health News:Shedding Light on Why Omega-3 Fatty Acids May Help the Heart 2Health News:Shedding Light on Why Omega-3 Fatty Acids May Help the Heart 3
(Date:12/24/2014)... SANTA BARBARA, Calif. , Dec. 23, 2014 ... the Junior Doctors, Association of Sierra Leone ... Sierra Leone for the treatment of local ... While a new dedicated Ebola care center was ... Ebola virus, the facility is not available for local Sierra ...
(Date:12/22/2014)... Mass. , Dec. 22, 2014 ... leading manufacturer of innovative dialysis products, announced today ... has cleared its System One™ to perform hemodialysis ... known as home nocturnal hemodialysis. NxStage,s® System One ... by the FDA for this indication. ...
(Date:12/22/2014)... , Dec. 22, 2014 Research and ... the addition of the "Investment Analysis of ... to their offering. ... in the US medical device sector identifies the ... and venture capital investments, and mergers and acquisitions. ...
Breaking Medicine Technology:First Ebola Treatment Unit for Local Health Workers Arrives in Sierra Leone 2NxStage Receives FDA Clearance for Home Nocturnal Hemodialysis 2NxStage Receives FDA Clearance for Home Nocturnal Hemodialysis 3Investment Analysis of the US Medical Device Sector 2
... Par Pharmaceutical Companies, Inc. (NYSE: PRX ... products from Teva Pharmaceuticals in connection with Teva,s acquisition ... own the ANDAs of fentanyl citrate lozenges, a generic ... version of Amrix®, as well as the U.S. rights ...
... 18, 2011 Tourists visiting the "Happiest Place on ... not able to experience it. Not all guests visiting ... walk the theme parks. Some people may appear healthy ... walking for long periods of time. Conditions stemming from ...
Cached Medicine Technology:Par Pharmaceutical Acquires Three Generic Products From Teva Pharmaceuticals 2
0.3% Yeast Extract, 0.3% Malt Extract, 0.5% Peptone, and 1.0% Glucose....
Tryptone is the pancreatic digest of casein used as a nitrogen source for bacteria. Ideal for general bacteriological use with a variety of microorganisms. Tryptone is guaranteed BSE-Free....
Penicillin G (1 x 10 4 units/mL and Streptomycin (10mg/mL) Solution. 100X Concentrate....
... units Penicillin/25,000 ug Streptomycin ... and Buffer products are manufactured ... and are cell culture tested ... Properties, Sterility : Neg. , ...
Medicine Products: