Navigation Links
New period of brain 'plasticity' created with transplanted embryonic cells
Date:3/25/2010

UCSF scientists report that they were able to prompt a new period of "plasticity," or capacity for change, in the neural circuitry of the visual cortex of juvenile mice. The approach, they say, might some day be used to create new periods of plasticity in the human brain that would allow for the repair of neural circuits following injury or disease.

The strategy which involved transplanting a specific type of immature neuron from embryonic mice into the visual cortex of young mice could be used to treat neural circuits disrupted in abnormal fetal or postnatal development, stroke, traumatic brain injury, psychiatric illness and aging.

Like all regions of the brain, the visual cortex undergoes a highly plastic period during early life. Cells respond strongly to visual signals, which they relay in a rapid, directed way from one appropriate cell to the next in a process known as synaptic transmission. The chemical connections created in this process produce neural circuitry that is crucial for the function of the visual system. In mice, this critical period of plasticity occurs around the end of the fourth week of life.

The catalyst for the so-called critical period plasticity in the visual cortex is the development of synaptic signaling by neurons that release the inhibitory neurotransmitter GABA. These neurons receive excitatory signals from other neurons, thus helping to maintain the balance of excitation and inhibition in the visual system.

In their study, published in the journal Science, (Vol. 327. no. 5969, 2010), the scientists wanted to see if the embryonic neurons, once they had matured into GABA-producing inhibitory neurons, could induce plasticity in mice after the normal critical period had closed.

The team first dissected the immature neurons from their origin in the embryonic medial ganglionic eminence (MGE) of the embryonic mice. Then they transplanted the MGE cells into the animals' visual
'/>"/>

Contact: Jennifer O'Brien
jobrien@pubaff.ucsf.edu
415-476-2557
University of California - San Francisco
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Super atoms turn the periodic table upside down
2. Periodontitis and myocardial infarction: A shared genetic predisposition
3. Study finds genetic links to age of first menstrual period and menopause
4. In vitro antibody production enables HIV infection detection in window period -- key to safer blood
5. Prevent periodontitis to reduce the risk of head and neck cancer
6. Algae and pollen grains provide evidence of remarkably warm period in Antarcticas history
7. Overweight adults age 70 or older are less likely to die over a 10-year period
8. Were short warm periods typical for transitions between interglacial and glacial epochs?
9. Invasion of the brain tumors
10. HIV is a double hit to the brain
11. AIDS interferes with stem cells in the brain
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/4/2014)... 3, 2014  Crossmatch™, a leading provider of ... DigitalPersona ® Pro Enterprise software and U.are.U ... throughout First Bank branch locations in ... and Virginia. First Bank, a progressive community ... North Carolina , selected the Crossmatch biometrics-based ...
(Date:12/3/2014)... As part of our commitment to offering ... to announce the release of a new reader that ... workforce data that they need. The Atlas ... existing readers. Many such devices have serious shortcomings when ... Older models force users to navigate numerous complicated steps ...
(Date:11/21/2014)...  Earlier this year Donald Spector , Chairman ... of the most prolific inventors in the world, got ... Smartphones to third party agencies. Spector envisioned this technology ... the earliest known patents in this area. Now major ... child care, elder care and hospital applications. This technology ...
Breaking Biology News(10 mins):First Bank Partners with Crossmatch to Increase Log In Security 2First Bank Partners with Crossmatch to Increase Log In Security 3Inception Technologies to Release New Biometric Reader 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4
... not all plants from the same species can be ... only prevent the exchange of genes between well-established species ... but also between varieties of one and the same ... if one wants to understand the origin of biodiversity. ...
... global inventory of farm animals showing many breeds of ... extinction, scientists from the Consultative Group on International Agricultural ... genebanks to conserve the sperm and ovaries of key ... An over-reliance on just a few breeds of ...
... clear nearly a century ago that many genes likely influence ... has followed in defining the myriad genes. Now an international ... a genetic variant associated with human height the first ... in the September 2 advance online edition of Nature Genetics, ...
Cached Biology News:How the plant immune system can drive the formation of new species 2How the plant immune system can drive the formation of new species 3Report: African, Asian, Latin American farm animals face extinction 2Report: African, Asian, Latin American farm animals face extinction 3Report: African, Asian, Latin American farm animals face extinction 4Genome study shines light on genetic link to height 2Genome study shines light on genetic link to height 3
(Date:12/19/2014)... In contrast to traditional LED lights where ... Valoya uses proprietary LED technology to incorporate their spectra ... which is critical in low proximity installations. The Valoya ... its lifetime which is up to four times longer ... investment cost was clearly higher when compared to traditional ...
(Date:12/19/2014)... MILLBROOK, N.Y. , Dec. 18, 2014 Egenix, ... has been elected Chairman of the Board, to succeed ... President and CEO, but will continue as a member of ... that he has added to the company over almost twenty ... The Board of Directors has established a Search ...
(Date:12/17/2014)... Based on the revenues gained from surgical ... dominated by four major players contributing to approximately ... include GE Healthcare (U.K.), Siemens AG (Germany), Philips ... Report Copy at http://www.marketsandmarkets.com/Market-Reports/surgical-imaging-market-210534462.html , The ... to its strong product portfolio, which includes its ...
(Date:12/17/2014)... Once more, EMAAR has selected ... waste water treatment plant to phase one of BayLaSun, ... Two years ago Bioshaft successfully supplied and operated a ... residential towers with an occupancy of 900 residences. ... gallons per day and was signed on September 16th, ...
Breaking Biology Technology:Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 2Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 3Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 4
... the shadow of the new Network222 development in downtown Madison ... everything from the apocalypse to government conspiracies. , ,Up on ... a sunnier sort of message, one of bright ideas and ... , ,The 200,000-square-foot office building, already home to several ...
... dime-sized fiber optic modules for telecommunications equipment. The three ... operations out of Eau Claire , has strung ... in the middle of the telecommunication industrys worst drought ... third round of fundinga $7.5 million infusion from a ...
... One of the critical qualities that separates good business ... vision. The American Heritage Dictionary defines vision as unusual ... people claim to be visionaries, and history has proven ... dot-com fiasco, many people were touted as visionaries. They ...
Cached Biology Technology:Wired to the Max: Network 222 2Wired to the Max: Network 222 3Wired to the Max: Network 222 4Corona Optical Systems continues to excite investors 2Corona Optical Systems continues to excite investors 3Leadership is all about Vision 2Leadership is all about Vision 3
... of Total Canine Endostatin. Canine ... Science products include a line of ... and reagents used for multiple research ... kits are ultra-sensitive, quick and dependable ...
... Kit is a very sensitive immunohistochemical tool ... containing both anti-von Willebrand Factor and anti-CD31 ... variety of species. This AP kit provides ... of frozen and paraffin-embedded sections in human ...
... Many modifications of Eagle's ... the original formulation. The most ... Modified Eagle's,Medium. DME is a ... Eagle [MEM] that contains a ...
... OligoMix or individual RNA sequences from high throughput ... small RNAs from LC Sciences. These products provide ... millions) of DESIGNED sequences delivered in a microtube ... containing a single verified RNA sequence. This is ...
Biology Products: