Outline · [ Standard ] · Linear+ The Journey of a New Brain Cell, brain cells travel along a neural road

http://www.livescience.com/humanbiology/06...rain_fluid.html The Journey of a New Brain Cell 060112_ventricle_surface_01.jpg By Bjorn CareyLiveScience Staff Writerposted: 12 January 200602:06 pm ET Newborn adult brain cells travel along a neural highway from their place of birth to their final destination. Now scientists have shown that tiny, beating, hair-like structures called cilia play an important role in helping the new cells merge onto the highway's on-ramp. Scientists have long questioned how newborn brain cells manage to migrate long distances in the adult brain and arrive at the right place. By studying the movement of newborn neurons inside adult mouse brains, a team of international scientists figured it out. This is the first study to show that cilia help control cell migration in the adult mouse brain as well as the developing brain. Researchers suspect the setup is similar in humans. "Even in the very old brain there is some of this going on. It clearly happens in old animal cells," study coauthor Arturo Alvarez-Buylla of the University of California, San Francisco told LiveScience. "This is something that's going on throughout life." [...] 060112_brain_cilia_02.jpg A scanning electron microscope view of the ependymal surface overlaid on chains of migrating newborn neurons stained for a marker of young neurons in green. Credit: Arturo Alvarez-Buylla 060112_ventricle_surface_02.jpg A scanning Electron Microscope view of the ventricle wall with part of the surface (blue) peeled off so that you can see the migrating cells oriented similarly to the bending of cilia. Credit: Dr. Arturo Alvarez-Buylla : nota : Merita citit tot articolul. O sa aflati chestii noi despre creierul vostru

http://www.livescience.com/humanbiology/06...rain_fluid.html

The Journey of a New Brain Cell
060112_ventricle_surface_01.jpg
By Bjorn CareyLiveScience Staff Writerposted: 12 January 200602:06 pm ET

Newborn adult brain cells travel along a neural highway from their place of birth to their final destination.

Now scientists have shown that tiny, beating, hair-like structures called cilia play an important role in helping the new cells merge onto the highway's on-ramp.

Scientists have long questioned how newborn brain cells manage to migrate long distances in the adult brain and arrive at the right place. By studying the movement of newborn neurons inside adult mouse brains, a team of international scientists figured it out.

This is the first study to show that cilia help control cell migration in the adult mouse brain as well as the developing brain. Researchers suspect the setup is similar in humans.

"Even in the very old brain there is some of this going on. It clearly happens in old animal cells," study coauthor Arturo Alvarez-Buylla of the University of California, San Francisco told LiveScience. "This is something that's going on throughout life."

[...]

060112_brain_cilia_02.jpg
A scanning electron microscope view of the ependymal surface overlaid on chains of migrating newborn neurons stained for a marker of young neurons in green. Credit: Arturo Alvarez-Buylla

060112_ventricle_surface_02.jpg
A scanning Electron Microscope view of the ventricle wall with part of the surface (blue) peeled off so that you can see the migrating cells oriented similarly to the bending of cilia. Credit: Dr. Arturo Alvarez-Buylla

: nota :
Merita citit tot articolul. O sa aflati chestii noi despre creierul vostru

La unii migrarea a fost totala si asa de rapida incat au parasit creierul