Posted by myco on April 9, 2009, at 11:17:57
In reply to Dopamine depletion: A myth?, posted by SLS on April 9, 2009, at 8:10:25
The evidence in studies ive looked at is contradictory for the most part. I do believe that AD use can reduce the firing rate of DA neurons - there seems to be enough consistant evidence to show this. So I agree with you that they moderate a change in neural activity.
> Yes, I have heard for years that SSRIs cause dopamine depletion, and that this might be responsible for the induction of apathy/amotivation/anhedonia or a loss of therapeutic effect ("poop-out"). However, where is there scientific evidence to support this notion? I would say that chronic SSRI usage might produce a change in the activity of neural pathways afferent to dopaminergic structures and circuits. However, to think that neurons actually run out of neurotransmitter seems unlikely to me. They probably are just not being stimulated to release the dopamine that they keep in storage.
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> What do you think? Is there any scientific evidence that demonstrates that an SSRI can produce dopamine depletion downstream?
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> - Scott
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poster:myco
thread:889611
URL: http://www.dr-bob.org/babble/20090408/msgs/889639.html