Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

People say we're running out of energy. That's only true if we stick with these old 19th century technologies. We are awash in energy from sunlight.

 

Ray Kurzweil

 

Zebrafish Holds Answer to Restoring Vision in Humans

RATE THIS! +0
Posted in Science on 4th Feb, 2013 12:20 AM by AlexMuller

“For some time geneticists have known that unlike humans, stem cells in zebrafish can replace damaged cells involved in many components of eyesight. Rods and cones are the most important photoreceptors. In humans, rods provide us with night vision while cones give us a full color look at the world during the day-time,” said study leader Dr Ted Allison, who with colleagues reported the findings in the open-access journal PLoS-ONE.

 

“What was not known was whether stem cells could be instructed to only replace the cones in its retina. This could have important implications for human eyesight.”

 

“This is the first time in an animal research model that stem cells have only repaired damaged cones,” Dr Allison explained. “For people with damaged eyesight repairing the cones is most important because it would restore daytime color vision.”

 

To date almost all success in regenerating photoreceptor cells has been limited to rods not cones. Most of these previous experiments were conducted on nocturnal rodents, animals that require good night vision so they have far more rods than cones.

 

“This shows us that when cones die in a cone-rich retina, it is primarily cones that regenerate. This suggests the tissue environment provides cues to instruct stem cell how to react,” Dr Allison said.

 

This shows some hope for stem cell therapy that could regenerate damaged cones in people, especially in the cone-rich regions of the retina that provide daytime color vision.

 

The next step for the team is to identify the particular gene in zebrafish gene that activates repair of damaged cones.



Read original article » Back to category

Comments

Author: Guest
Posted: 2013-03-20
+0
An intelligent answer - no BS - which makes a pelasnat change Reply


 

Recent headlines

  • Posted in Science on 2017-08-20 16:55:58
    Computer Approaches Human Skill for First Time in Mapping.....read more
    Posted in Science on 2017-08-20 16:51:23
    Researchers use polystyrene to make next-generation of.....read more
    Posted in Science on 2017-08-20 16:46:25
    NASA completes space communications network..read more
    Posted in Science on 2017-08-19 18:52:30
    Study Shows How We United to Save The Environment..read more
    Posted in Science on 2017-08-19 17:58:30
    Lunar XPrize extends mission deadline and adds extra.....read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Scientists probe Neptune's depths to reveal secrets of icy.....read more
    Posted by AlexMuller
    New terahertz imaging approach could speed up skin cancer.....read more
    Posted by AlexMuller
    Rebutting the claim that antidepressants do not work..read more
    Posted by AlexMuller
    Artificial neural networks decode brain activity during.....read more
    Posted by AlexMuller
    Four Earth-sized planets detected orbiting the nearest.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me