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EurekAlert

Public release date: 29-Aug-2003

Contact: Jennifer Nachbur
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802-656-7875
University of Vermont

Stem cells shown to regenerate damaged lung tissue for first time
Study adds to evidence of adult stem cells' promising therapeutic role

BURLINGTON, VT – For the first time, researchers have demonstrated that adult human stem cell transplantation results
in spontaneous cell regeneration in damaged lung tissue. Published in the August 1 issue of the American Journal of
Respiratory and Critical Care Medicine, the study further supports an existing body of research that suggests blood-
and marrow-derived stem cells have the capacity to become many different human tissues.

"Many of the body's tissues once thought to be only locally regenerative may, in fact, be actively replaced by
circulating stem cells after hematopoietic or blood-forming stem cell transplantation," says lead author Benjamin
Suratt, M.D., assistant professor of medicine and Vermont Lung Center researcher at the University of Vermont College
of Medicine. "This finding is of note not only for its novelty as a regenerative mechanism of the lung, but also for
its vast therapeutic implications for any number of lung diseases."

According to Suratt, the study's findings indicate that circulating stem cells are going into organ tissue and
repairing damage, which could have a huge impact on the treatment of such devastating lung diseases as emphysema or
cystic fibrosis.

Supported by funding from the National Institutes of Health and a National Center for Research Resources Centers for
Biomedical Research Excellence grant, Suratt and his colleagues are currently looking further into what types of cells
have the capacity to differentiate and generate a different type of cell, and whether these cells might be used to
treat cystic fibrosis.

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SOURCE: EurekAlert, DC
http://www.eurekalert.org/pub_releases/2003-08/uov-scs082903.php

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