HOME >> MEDICINE >> NEWS
Artificial organs

t.

In a bid to beat the problem, Borenstein teamed up with transplant surgeon Vacanti, who in 1997 famously grew a human ear from cartilage cells on the back of a mouse. The idea the pair hatched involves copying the blood vessel network of a real liver and using 3D computer modelling and machining to mimic its construction.

First, they injected a liquid plastic into the blood vessels of a liver. Once the plastic had solidified, they dissolved the liver tissue, leaving a solid cast of the organ's blood vessels. From this model they were able to take measurements of vessel diameters, branching angles and the distances between vessels. They fed the numbers into software that built a 3D fractal-like computer model of a liver's blood supply. When they simulated blood flowing through the "liver", it had the same blood flow properties as the living system, says Borenstein.

The 3D blood vessel model is then "sliced up" inside the computer, dividing the model into a series of horizontal layers, each of which is used to make a silicon mould. PLGA is then poured into each mould to make the many slices that when sandwiched together, under pressure and heat, create a scaffold for the artificial liver. It's shot through with channels as small as the finest capillaries and as large as the organ's main veins and arteries.

The scaffold then has to be seeded with the cells that make up the solid part of the liver. As well as hepatocytes, which perform key liver functions such as breaking down toxins and metabolising proteins and carbohydrates, there are at least six other types of cells. Borenstein says there are two possible ways of seeding this complex network of different cell types. You could seed each layer separately with different cell types, or inject them from the outside. But the pair won't yet say how this is done.

To get the blood supply working, a solution of endothelial cells, the cells that normally line blood vessels, is pumped into t
'"/>

Contact: Claire Bowles
claire.bowles@rbi.co.uk
44-207-331-2751
New Scientist
24-Apr-2002


Page: 1 2 3

Related medicine news :

1. Artificial liver trials show progress, as transplant candidates wait
2. Artificial liver moves toward commercialization
3. New Type Of Artificial Surfactant Shows Promise In Treating Lung Disease
4. Trial Begins For First Artificial Liver Device Using Human Cells
5. Infectious agent linked to mad cow disease found in organs other than the brain
6. Blacks and poor more likely to donate than receive many types of transplant organs
7. Study finds HER2-positive breast cancer invades organs due to fatal chemical attraction
8. Targeting cell fusion as possible way to repair organs, deliver cancer vaccines
9. Improved procurement could more than double availability of life-saving transplant organs
10. Imaging study reveals effect of smoking on peripheral organs
11. PET scans show cigarette smoke affects peripheral organs

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/8/2016)... York, NY (PRWEB) , ... February 08, 2016 , ... ... are too much to handle, you are not alone. According to the Center for ... include heart disease, stroke, type 2 diabetes and certain types of cancer, some of ...
(Date:2/8/2016)... , ... February 08, 2016 , ... Delta Dental of ... help combat pancreatic cancer. , Gary D. Radine, who recently retired as president and ... American Cancer Society’s 2015 CEO of the Year , helped lead the effort ...
(Date:2/8/2016)... ... February 08, 2016 , ... Discover the Rocky Mountain region’s longest running and ... companies. Attendees also get to see the most incredible gardens and home improvement ... , at the Colorado Convention Center - 700 14th St. Denver CO, is an ...
(Date:2/8/2016)... Las Vegas, NV (PRWEB) , ... February 08, 2016 , ... ... transformation on February 9th, 10th and 11th, 2016 in honor of his birthday on ... relationships and true happiness. Mahendra Trivedi is known by over 250,000 people from ...
(Date:2/7/2016)... ... February 07, 2016 , ... HealthSmart Holdings, ... and organizations with the tools and information to lower the costs, and increase ... the cost of providing employee healthcare benefits by as much as 22%:, + ...
Breaking Medicine News(10 mins):
(Date:2/5/2016)... , Feb. 5, 2016  Despite the recent explosion ... than other industries to embrace Big Data due to ... On the medical side, organizations have begun looking to ... clinical trials to adherence. --> ... firm Best Practices, LLC, Big Data has started informing ...
(Date:2/5/2016)... , Feb. 5, 2016  Syneron Medical ... aesthetic device company, announced today that William ... North America, is scheduled to participate in the ... Conference on February 11, 2016 in ... allow institutional investors to meet with the Mr. ...
(Date:2/5/2016)... 2016  Patients in Alabama seeking ... therapy no longer have to travel out of state. ... Urology Centers of Alabama to provide a total ... qualifying patients. Alabama is ... of prostate cancer using many different modalities. They are the ...
Breaking Medicine Technology:
Cached News: