Posted by CrAzYmEd on May 23, 2010, at 17:42:05 [reposted on May 24, 2010, at 22:42:06 | original URL]
In reply to Re: Also, posted by CrAzYmEd on May 23, 2010, at 12:25:01
But you are right there is no way to know "the way to go" it really depends on the situation, for example look at this study. 5HT2A agonists may be of benefit for OCD patients.
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17) Perani D, Garibotto V, Gorini A, Moresco RM, Henin M, Panzacchi A, Matarrese M, Carpinelli A, Bellodi L, Fazio F
In vivo PET study of 5HT(2A) serotonin and D(2) dopamine dysfunction in drug-naive obsessive-compulsive disorder.
Neuroimage. 2008 Apr 27;
There are several lines of evidence, the majority indirect, suggesting that changes in serotonergic or dopaminergic neurotransmission may contribute to the pathogenesis of obsessive-compulsive disorder (OCD). We evaluated the co-occurrence of serotonergic and dopaminergic dysfunctions in OCD subjects, all drug-naive, with no co-morbidity and homogeneous for symptoms. Each subject underwent two positron emission tomography (PET) scans to measure in vivo both serotonin (5-HT(2A)) and dopamine (D(2)) receptor distribution. For this, we used [(11)C]MDL and [(11)C]Raclopride, highly selective antagonists of 5-HT(2A) and D(2) receptors, respectively. The comparison with a control group was carried out using both voxel-wise (SPM2) and regions of interest (ROI) approaches. There was a significant reduction of 5-HT(2A) receptor availability in frontal polar, dorsolateral, and medial frontal cortex, as well as in parietal and temporal associative cortex of OCD patients. We also found a significant correlation between 5-HT(2A) receptor availability in orbitofrontal and dorsolateral frontal cortex and clinical severity, suggesting a specific role for serotonin in determining the OCD symptoms. There was also a significant reduction of [(11)C]Raclopride uptake in the whole striatum, particularly in the ventral portion, possibly reflecting endogenous dopaminergic hyperactivity. The co-existence of serotonergic and dopaminergic dysfunction in the same homogeneous group of drug-naive OCD patients provides in vivo evidence for the complex molecular mechanisms of OCD, and represents the basis for further studies on the effect of therapeutic agents with specific modulatory effects on these neurotransmission systems. [PubMed Citation] [Order full text from Infotrieve]"
My point is that 5HT2A antagonism seems to be considered as allways good on these forums, and D2 antagonism should be the way to go too, while i disagree with both, it depends on the situation, and i beleive that many cases the other way around is good, those options seem to be ignored, 5HT2A is allways deemed as "bad".
poster:CrAzYmEd
thread:948688
URL: http://www.dr-bob.org/babble/neuro/20100223/msgs/948720.html