Navigation Links
Scientists show how a neuron gets its shape
Date:4/3/2009

on how to react to it.

Two genes, called dex-1 and dyf-7, caught their attention. If the animals had a mutation in either one of these genes, Heiman and Shaham saw that even though the cell migrated normally away from the tip of the nose, the dendrite didn't stay anchored. Instead, it dragged along behind the cell body, resulting in an abnormally short dendrite. When they looked at the function of the proteins, the researchers found that they form a matrix to which the dendrites are anchored. Without the matrix to anchor the neuron, the dendrites didn't form properly.

The two proteins, it turns out, are very similar to proteins that anchor the hair cells that detect sound waves in the human ear. "That was our second surprise," says Heiman. "That there is this evolutionary relationship between a sensory organ in a worm and a sensory organ in humans. In the case of the worm, the anchor is being used to resist the force of cell migration. In our ear, it is the same anchor but it is being used for a completely different purpose."

The scientists' theory that the brain is wired based on connectivity (not absolute distance) provides an explanation of how the brain grows in proportion to the growth of an organism. "As the worm grows, its dendrites get longer and longer and the position of cell bodies change as they move farther away from a synapse," says Shaham. "But what stays the same are these connections."


'/>"/>

Contact: Thania Benios
tbenios@rockefeller.edu
212-327-7146
Rockefeller University
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Neuroscientists demonstrate link between brainwave acticity and visual perception
2. Einstein scientists propose new theory of autism
3. International Scientists Secure Quality in Molecular Diagnostics
4. CSHL neuroscientists propose project to comprehensively map mammalian brain circuits
5. Scientists Identify More Breast Cancer Genes
6. Scientists Capture HIV Transfer Among T-Cells on Video
7. 2 NYU scientists named Howard Hughes Medical Institutes Early Career Scientists
8. Two NYU Scientists Named Howard Hughes Medical Institutes early career scientists
9. Three Johns Hopkins researchers named Howard Hughes Medical Institute early career scientists
10. Wayne State University Scientists ID New Biomarker for Prostate Cancer
11. URI scientists reveal mechanism that regulates cancer-causing gene
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/1/2014)... Philadelphia, PA, October 1, 2014 Patients with ... treatment, have a greatly increased risk of depression. ... therapy for chronic hepatitis C virus infection causes ... Omega-3 fatty acids, more commonly known as fish ... including lowering the risk of heart disease and ...
(Date:10/1/2014)... (PRWEB) October 01, 2014 Insuranceragents.info ... find a good life insurance plan for vulnerable family ... for vulnerable family members. Providers in the family should ... will cause financial hardships for the rest of the ... of policies. Families can benefit more from temporary coverage ...
(Date:10/1/2014)... 01, 2014 T.E.N., a ... relationship-marketing firm, announced today the nominees vying ... Project of the Year Awards for North ... organizations in financial services, commercial, health care, ... endeavors that address key issues in the ...
(Date:10/1/2014)... (PRWEB) October 01, 2014 Between 23 ... in the U.S., according to figures from the National ... Diseases Association (AARDA), and many of them have something ... of having undiagnosed celiac disease. Gluten Free Therapeutics, ... awareness of undiagnosed celiac disease by publishing a series ...
(Date:10/1/2014)... 2014 Scientists at the University of ... target immune system proteins has the power to knock ... details of the new study on their website. ... Researchers in the UWA School of Pathology and Laboratory ... mice with mesothelioma with promising results. , “A ...
Breaking Medicine News(10 mins):Health News:Omega-3 fatty acids may prevent some forms of depression 2Health News:Life Insurance for Families - Clients Can Compare Affordable Rates Online! 2Health News:T.E.N. Announces Nominees for the 2014 ISE® North America Awards; People’s Choice Award voting now open to industry at large 2Health News:T.E.N. Announces Nominees for the 2014 ISE® North America Awards; People’s Choice Award voting now open to industry at large 3Health News:T.E.N. Announces Nominees for the 2014 ISE® North America Awards; People’s Choice Award voting now open to industry at large 4Health News:T.E.N. Announces Nominees for the 2014 ISE® North America Awards; People’s Choice Award voting now open to industry at large 5Health News:T.E.N. Announces Nominees for the 2014 ISE® North America Awards; People’s Choice Award voting now open to industry at large 6Health News:T.E.N. Announces Nominees for the 2014 ISE® North America Awards; People’s Choice Award voting now open to industry at large 7Health News:Informative New Blog Series Underscores Link Between Celiac Disease and Other Autoimmune Disorders 2Health News:Informative New Blog Series Underscores Link Between Celiac Disease and Other Autoimmune Disorders 3Health News:New Mesothelioma Study Says Mice Cured by Immuntherapy “Cocktail”, Reports Surviving Mesothelioma 2
... MINNEAPOLIS, July 14 Biotel Inc. (OTC Bulletin Board: ... terminating the Merger Agreement with Biotel due to a failure ... Biotel believes it has complied with all terms of the agreement ... representations to Biotel. Biotel is considering its legal options. , ...
... , , NASHVILLE, Tenn., ... payment cycle solutions, today announced participation through eRx Network, Emdeon,s pharmacy ... , a revolutionary emergency preparedness tool that is triggered under a ... providers access to critical services during a disaster. , ...
... during disaster operations or avalanche victims be found ... systems with terrestrial locating aids and situation-dependent sensory ... during their missions: poisonous, harmful gases, blocked escape ... head of the operation needs to know where ...
... , PARSIPPANY, N.J., July 14 alli spokeswoman ... Music Hall of Fame in Nashville to celebrate her progress since ... and just having more energy and feeling better. The concert was ... made a commitment to live healthier lives. , ...
... 14 A new Mayo Clinic study found ... is better at predicting who will develop Alzheimer,s disease ... piece of information to aid in the identification and early ... study will be presented at the Alzheimer,s Association International Conference ...
... , , , ... , DENVER, July 14 Atkins Nutritionals, Inc. ("Atkins(TM)"), with ... products: a new All Purpose Baking Mix and Penne Pasta that has ... following the Atkins Nutritional Approach or those looking to reduce the refined ...
Cached Medicine News:Health News:Emdeon To Collaborate With Rx Response in Critical Pharmacy Disaster Reporting 2Health News:Emdeon To Collaborate With Rx Response in Critical Pharmacy Disaster Reporting 3Health News:Safely on the move 2Health News:Wynonna Judd Celebrates Her Progress on alli With Private Concert at Legendary Venue 2Health News:Wynonna Judd Celebrates Her Progress on alli With Private Concert at Legendary Venue 3Health News:Mayo Clinic Study Continues to Refine Most Effective Methods to Predict Alzheimer's Disease 2Health News:Mayo Clinic Study Continues to Refine Most Effective Methods to Predict Alzheimer's Disease 3Health News:Bread, Pancakes and Pasta on Atkins? Yes, That's Right! 2Health News:Bread, Pancakes and Pasta on Atkins? Yes, That's Right! 3
(Date:10/1/2014)... 2014   Plexus Information Systems, Inc. ... Management Systems (AIMS), announced a partnership with ... owned subsidiary of Quality Systems, Inc. and a ... solutions.  Logo - http://photos.prnewswire.com/prnh/20140930/149406 ... This partnership extends the NextGen Healthcare product ...
(Date:10/1/2014)... -- NeuroCall, Inc., ("NeuroCall") announced today that it recently ... services. Dr. Ricardo Garcia-Rivera , Founder and Chief ... that our quality of service has been recognized by ... support and continuity of care to patients of our ... United States ." NeuroCall currently ...
(Date:10/1/2014)... SAN MARCOS, Texas , Oct. 1, 2014 ... that it is scaling volume production of photoactive ... solar power technologies . While offering numerous advantages ... difficulty of producing large quantities of quantum dots ... has until now kept them from commercial utilization ...
Breaking Medicine Technology:Plexus IS' Anesthesia Documentation Solution Strengthens NextGen Healthcare Product Offering 2Plexus IS' Anesthesia Documentation Solution Strengthens NextGen Healthcare Product Offering 3NeuroCall Awarded Joint Commission Accreditation 2Quantum Materials Scaling Up Photoactive Quantum Dot Production for Solar Power Generation 2Quantum Materials Scaling Up Photoactive Quantum Dot Production for Solar Power Generation 3
... Sun Med TruFlow™ Oxygen flowmeter with a ... warranty covering calibration and manufacturing defects. A ... meet most needs. Also available with all ... power take-off and double unit configurations. Our ...
... adults, the entire series of time-tested Timeter® ... the needs of care providers and patients ... accuracy. You can see it in the ... performance, year after year. Every Timeter® Classic ...
The Soft-Touch Timeter® Flowmeter is durable, long-lasting and easy to maintain. Timeter ® by Allied Flowmeters: Quality Plus Value....
The Soft-Touch Timeter® Flowmeter is durable, long-lasting and easy to maintain. Timeter ® by Allied Flowmeters: Quality Plus Value....
Medicine Products: