BIO ARTIFICIAL LIVER COME CLOSER TO REALITY
A new
research has revealed that bio-artificial liver support system for patients
with acute liver failure is under investigation to assess the safety and
effectiveness.
Lead
investigator Steven D. Colquhoun at Cedars-Sinai said that the quest for a
device that can fill in for the function of the liver, at least temporarily,
has been underway for decades and a bio-artificial liver (BAL), could
potentially sustain patients with acute liver failure until their own livers
self-repair.
The
majority of the 49 sites currently involved in the investigation are in the
United States, but studies are also underway in Europe and Australia and the
research involves patients with liver disease caused by acute alcoholic
hepatitis, a group with few therapeutic options.
In the
bioartificial liver, which is designed by Vital Therapies Inc., blood is drawn
from the patient via a central venous line, and then is filtered through a
component system featuring four tubes, each about 1 foot long, which are
embedded with liver cells.
The
external organ support system is designed to perform critical functions of a
normal liver, including protein synthesis and the processing and cleaning of a
patient's blood, after which the filtered and treated blood is returned to the
patient through the central line.
Colquhoun
added that if successful, a bioartificial liver could not only allow time for a
patient's own damaged organ to regenerate, but also promote that regeneration
and in the case of chronic liver failure, it also potentially could support
some patients through the long wait for a liver transplant.
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