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Stem cells from cord blood could help repair damaged heart muscle
Date:10/13/2011

At least 20 million people survive heart attacks and strokes every year, according to World Health Organisation estimates, but many have poor life expectancy and require continual costly clinical care. The use of patient's own stem cells may repair heart attacks, although their benefit may be limited due to scarce availability and ageing. The researchers have found heart muscle-like cells grown using stem cells from human umbilical cord blood could help repair heart muscle cells damaged by a heart attack.

The study, led by Professor Raimondo Ascione, Chair of Cardiac Surgery & Translational Research in the School of Clinical Sciences at the University of Bristol, is published online in Stem Cell Reviews & Reports.

The study, funded by the British Heart Foundation (BHF) and the National Institute for Health Research (NIHR), found that it is possible to expand up to seven-fold, in vitro, rare stem cells (called CD133+) from human cord blood and then grow them into cardiac muscle cells.

The findings could have major implications on future treatment following a heart attack given that cells obtained from adults following a heart attack may be less functional due to ageing and risk factors.

Professor Ascione said: "We believe our study represents a significant advancement and overcomes the technical hurdle of deriving cardiac muscle-type cells from human cord blood. The method we have found has the attributes of simplicity and consistency. This will permit more robust manipulation of these cells towards better cell homing and cardiac repair in patients with myocardial infarction.

"Our research suggests that in the future stem cells derived from cord blood bank facilities might be used for repair after a heart attack."

The study focused on a rare type of stem cells, called CD133+, which is also present in adult bone marrow. There is also strong experimental evidence these cells derived from bone m
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Contact: Joanne Fryer
joanne.fryer@bristol.ac.uk
0044-117-331-8092
University of Bristol
Source:Eurekalert

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