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Heart Cells Closely Control Their Own Oxygen Supply

Date:
October 18, 1999
Source:
University Of Pennsylvania Medical Center
Summary:
Cardiac contractile cells - the cells that power the heartbeat - actively protect themselves from levels of oxygen in their own blood supply that are either too high or too low, according to a new study. The cells secrete substances into the surrounding fluid that diffuse to the vessels serving the heart and trigger them to constrict or dilate as needed to closely control the amount of oxygen-rich blood reaching the cells.

Cardiac contractile cells - the cells that power the heartbeat - actively protect themselves from levels of oxygen in their own blood supply that are either too high or too low, according to a new study. The cells secrete substances into the surrounding fluid that diffuse to the vessels serving the heart and trigger them to constrict or dilate as needed to closely control the amount of oxygen-rich blood reaching the cells. The results stem from a collaborative project involving researchers at the University of Pennsylvania Medical Center and the Institut National de la Santθ et de la Recherche Mθdicale (INSERM) in France.


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The above story is based on materials provided by University Of Pennsylvania Medical Center. Note: Materials may be edited for content and length.


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University Of Pennsylvania Medical Center. "Heart Cells Closely Control Their Own Oxygen Supply." ScienceDaily. ScienceDaily, 18 October 1999. <www.sciencedaily.com/releases/1999/10/991018075838.htm>.
University Of Pennsylvania Medical Center. (1999, October 18). Heart Cells Closely Control Their Own Oxygen Supply. ScienceDaily. Retrieved April 24, 2014 from www.sciencedaily.com/releases/1999/10/991018075838.htm
University Of Pennsylvania Medical Center. "Heart Cells Closely Control Their Own Oxygen Supply." ScienceDaily. www.sciencedaily.com/releases/1999/10/991018075838.htm (accessed April 24, 2014).

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