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On Wed, 9 Jun 1999 23:30:58 -0500 Phil Tompkins <[log in to unmask]> writes, in part: >Barb_MSN asked: > >> ... the heart is a muscle .... Does anyone KNOW if the heart CAN be >> affected by PD? > >Very interesting question -- if PD affects movement, what about >heart muscle contractions? > >Hormones such as epinephrine and signals via nerves connected to the >autonomic nervous system modify the basic heartbeat, >Phil Tompkins >Hoboken NJ >age 61/dx 1990 Hi Phil, Epinephrine is produced from norepinephrine, which in turn is produced from dopamine. If the dopamine supply is abnormal, do you think this could in turn change the autonomic nervous signalling to the sino-atrial node of the heart? Ivan ^^^^^^ WARM GREETINGS FROM ^^^^^^^^^^^^ :-) Ivan Suzman 49/39/36 [log in to unmask] :-) Portland, Maine land of lighthouses deg. F :-) ********************************************************************