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On Wed 16 Feb, Nigel Harland wrote:
> Hi Ivan,
>             I'm afraid my source is pretty vague, my mother who is the
> secretary
> of our local PD Society had been told about it by a friend, who had read
> about it in a Medical Journal, however, Barbs' message seems to have
> confirmed it !!
> Regards, Nigel
> ----- Original Message -----
> From: Ivan M Suzman <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, February 16, 2000 8:41 AM
> Subject: Re: Dopamine patches?
>
>
> > Hi Nigel,
> >
> > Who iis your source?
> > Thanks
> > Ivan
> >
> > On Wed, 16 Feb 2000 03:23:36 -0500 Nigel Harland <[log in to unmask]>
> > writes:
> > >Hello all,
> > >            I have heard an unsubstantiated rumour that Dopamine
> > >Patches are soon to be released by Roche, can anyone verify this ?
> > >Thanks,
> > >Nigel   45 diagnosed 12 yrs ago.
> >
> > ^^^^^^  WARM GREETINGS  FROM  ^^^^^^^^^^^^  :-)
> >  Ivan Suzman        50/39/36       [log in to unmask]      :-)
> >  Portland, Maine    land of lighthouses           deg. F   :-)
> > ********************************************************************
> >
>
>
>
I am sorry to be the bearer of bad news, but the excitement at the news
of imminent release of Dopamine patches is a little premature. The last
time that I checked up on this subject the outcome was as follows:

1/ Dopamine patches would not work, because the Dopamine would be
attacked and destroyed before it could travel from the patch to the
brain.

2/ A levodopa patch would take care of the destruction while the chemical
was in transit, but there is another factor which over-rides points 1
and 2. That is:

3/ Levodopa and Dopamine are such large molecules, and we need it in such
large quantities, that I doubt if you could could get the flow rate
required even if you used a full body patch!! (What an apalling thought)

4/ I think you will find, it you scan the press releases which have been
issued from time to time the magic word 'agonist' lurking quietly in
the release.

I can't help wondering what is the point of a Dopamine Agonist patch,
when the dopamine agonist tablets have such a long half-life that in
the case of Cabergoline for instance you only take one per day anyway!!
Regards

--
Brian Collins  <[log in to unmask]>  (60/39/34)