Organs // Current TV

inheriting an Organ

me and the boys inheritedan organ and the boys played it .

alexanderboots1
added this
10 months ago
|
0 comments

Scientists create human kidneys from stem cells

British scientists have created human kidneys from stem cells in a breakthrough which... more

eva2
added this
10 months ago
|
0 comments

Blocking enzyme cut cancer spread

Scientists at the UK's Institute of Cancer Research have prevented breast cancer... more

suzane
added this
12 months ago
|
0 comments

Scientists 'Reverse Aging Process' in Mice

The experiment on mice is said to be a process into preventing/slowing major health... more

Mcellie
added this
1 year ago
|
0 comments

How masturbation became known as a sin...

To understand how this ‘masturbation is sinful’ idea came to be part of... more

worrg
added this
1 year ago
|
2 comments

Tissue engineers create a new way to assemble artificial tissues

Researchers at the MIT-Harvard Division of Health Sciences and Technology (HST) have come up with a new way to overcome that challenge, by encapsulating living cells in cubes and arranging them into 3-D structures, just as a child would construct buildings out of blocks.

The new technique, dubbed "micromasonry," employs a gel-like material that acts like concrete, binding the cell "bricks" together as it hardens. Ali Khademhosseini, assistant professor of HST, and former HST postdoctoral associate Javier Gomez Fernandez describe the work in a paper published online in the journal Advanced Materials.

The tiny cell bricks hold potential for building artificial tissue or other types of medical devices, says Jennifer Elisseeff, associate professor of biomedical engineering at Johns Hopkins University, who was not involved in the research. "They're very elegant and have a lot of flexibility in how you grow them," she says. "It's very creative."

To obtain single cells for tissue engineering, researchers have to first break tissue apart, using enzymes that digest the extracellular material that normally holds cells together. However, once the cells are free, it's difficult to assemble them into structures that mimic natural tissue microarchitecture.

Some scientists have successfully built simple tissues such as skin, cartilage or bladder on biodegradable foam scaffolds. "That works, but it often lacks a controlled microarchitecture," says Khademhosseini, who is also an assistant professor at Brigham and Women's Hospital. "You don't get tissues with the same complexity as normal tissues."

The HST researchers built their "biological Legos" by encapsulating cells within a polymer called polyethylene glycol (PEG), which has many medical uses. Their version of the polymer is a liquid that becomes a gel when illuminated, so when the PEG-coated cells are exposed to light, the polymer hardens and encases the cells in cubes with side lengths ranging from 100 to 500 millionths of a meter.

Once the cells are in cube form, they can be arranged in specific shapes using templates made of PDMS, a silicon-based polymer used in many medical devices. Both template and cell cubes are coated again with the PEG polymer, which acts as a glue that holds the cubes together as they pack themselves tightly onto the scaffold surface.

After the cubes are arranged properly, they are illuminated again, and the liquid holding the cubes together solidifies. When the template is removed, the cubes hold their new structure.

Gomez Fernandez and Khademhosseini used this method to build tubes that could function as capillaries, potentially helping to overcome one of the most persistent problems with engineered organs — lack of an immediate blood supply. "If you build an organ, but you can't provide nutrients, it is going to die," says Gomez Fernandez, now a postdoctoral fellow at Harvard. They hope their work could also lead to a new way to make artificial liver or cardiac tissue.

Other researchers have developed a technique called organ printing to create complex 3-D tissues, but that process requires a robotic machine that is not in widespread use. The new technique does not require any special equipment. "You can reproduce this in any lab," says Gomez Fernandez. "It's very simple."

To get to the point where these engineered tissues could become clinically useful, "the short-term next step is really looking at different cell types and the viability of tissue growth," says Elisseeff. The researchers are now doing that, and they are also exploring the use of different polymers that could replace PEG and offer more control over cell placement.Researchers at the MIT-Harvard Division of Health Sciences and Technology (HST) have... more

danteglam
added this
1 year ago
|
0 comments

'Psycho rips out woman's organs in US'

A PSYCHOTIC neighbour with a festering rejection complex was arrested for brutally... more

bundlebear
added this
2 years ago
|
1 comment

Mother charged in son's beating death - WAVE 3 TV Louisville, KY |

Take notice that the man was arrested first until further investigation of this... more

WeAreChangeKy
added this
2 years ago
|
0 comments

Palestinians Demand Probe of Israeli Organ-Harvesting

This is most disturbing. Quote: "I'm horrified but I must say it's... more

booksellergirl
added this
2 years ago
|
0 comments

Israel admits harvesting Palestinian organs

Israel has admitted that pathologists harvested organs from dead Palestinians, and... more

TravG73
added this
2 years ago
|
207 comments

Printing organs and tissues?

Wake Forest University School of Medicine is developing some interesting research such... more

mashdata
added this
2 years ago
|
1 comment

A 'Meat Band-Aid': Mass-Produced Living Tissue Could Help Healing

Apligraf is a matrix of cow collagen, human fibroblasts and keratinocyte stem cells... more

atomiclegion
added this
2 years ago
|
1 comment

'Organs' - print ads for Publicis Conseil, Paris

icon01
added this
2 years ago
|
0 comments

Finally, the Spleen Gets Some Respect

Scientists have discovered that the spleen, long consigned to the B-list of abdominal... more

neonbunny
added this
2 years ago
|
1 comment

Waste Not -- Photographic Evidence Of One Person's Life Collections

Some might calling it the mother lode of lifetime hoarding, but for artist Song Dong,... more

sfinfgeld2
added this
2 years ago
|
3 comments

‘Jigsaw Kid’ lives with jumbled up internal organs

Bethany Jordan, six, was born with many of her organs back to front but amazed doctors... more

ClipsFC
added this
2 years ago
|
1 comment

European Union probing Balkan organ trade

RRIPE, Albania - Europe's top human rights watchdog is launching a probe into a... more

ClipsFC
added this
2 years ago
|
0 comments

United Kingdom Talk Video Thursday 16th April 2009

Thursday's edition of my three times a week talk show.Watch the show HERE ON... more

ChrisReardon
added this
2 years ago
|
0 comments

Show ‘Em What You’re Made Of

Rachel Wright is a Mobile, Alabama artist with a unique vision. While the artist works... more

whitespacecarpet
added this
2 years ago
|
0 comments

Under a Reindeer's Skin (photos)

Photographs of a plastinated reindeer at the Body Worlds exhibition in London, England... more

ebindelglass
added this
3 years ago
|
0 comments

select your country

Community Spotlight

TAGS

tagged w/ Organs

top videos

find current on tv

find current online

recent comments

© 2012 Current TV, LLC All Rights Reserved

the basics

follow us online

tools

stay in touch

© 2012 Current TV, LLC
All Rights Reserved