Do muscles that twitch change as a result?

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Do muscles that twitch change as a result?
« on: 19/04/2011 18:30:03 »
Eelko  asked the Naked Scientists:
Hi Naked Scientists,

When a heart has weakened there are several options to increase the power of the blood flow.  One of them is creating a second heart from a large muscle out of your backside.  In short this muscle is wrapped around a blood vessel and then given an artificial sinus rythm that matches the true heart. This makes the muscle contract and relax at the pace of a heart muscle. The fibers in this muscle are different from heart-muscle fibers, but from that moment on start to change into heart-muscle tissue. This change in muscle tissue has been well documented.

Still, I wonder. People with diseases like Parkinson also have involuntary continuous movements of certain muscles (arm-, neck-, leg-muscles) just like those artificial continuous contractions of that support-heart. Does muscle tissue of Parkinson patients also show these changes?



What do you think?
« Last Edit: 19/04/2011 18:30:03 by _system »


Offline RD

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Do muscles that twitch change as a result?
« Reply #1 on: 19/04/2011 19:14:51 »
Can't find an example of skeletal muscle being used to power an artificial heart in humans, only dogs

skeletal muscle (e.g. in arse) is different from heart muscle, arse muscle would tire and stop contracting after hours, it's not adapted to work continuously like heart muscle.

{The nearest thing I have found in humans ...}

« Last Edit: 19/04/2011 20:03:24 by RD »