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Penn Research lends new insights on conditions for new blood vessel formation
Date:7/3/2014

ough the vessel exceeded a certain threshold.

"These findings suggest that our blood vessels can sense when blood flow exceeds their carrying capacity and respond by producing additional vessels on demand," Chen explained. "Perhaps we could one day take advantage of this response to enhance vessel regrowth where the need is critical, such as after a heart attack."

During their experiments, the researchers controlled the fluid flow within the artificial vessel, and ultimately where new vessels would sprout, by changing the shape and orientation of thin needles deployed within a collagen gel containing each vessel. Using a mathematical model, they predicted the exact spots along the vessel where force exceeded the sprouting threshold, thereby pinpointing the location where new vessels would form.

Now the researchers aim to advance new experiments designed to figure out how cells sense this mechanical threshold.

"The logical next step is to determine the molecular mechanism behind this phenomenon," said Galie, "what proteins are involved and how might they be targeted in new drug therapies."


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Contact: Evan Lerner
elerner@upenn.edu
215-573-6604
University of Pennsylvania
Source:Eurekalert  

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