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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Apparent absence of serotonin1B receptors in biopsied and post-mortem human brain.

In order to determine if post-mortem delays could account for the apparent absence of 5-HT1B sites reported in human brain, 5-HT1B binding parameters were determined in fresh and fresh-frozen cortical biopsies and compared to results obtained in post-mortem tissues. Binding parameters and in vitro receptor autoradiography were performed by using two different ligands which have been shown to label 5-HT1B sites, namely [3H]5-HT, in presence of 100 nM 8-OH-DPAT, and [125I]cyanopindolol, in presence of 10 microM (-)isoproterenol. No specific binding was detected with [125I] cyanopindolol in either fresh cortical biopsies or post-mortem tissues, suggesting that the apparent absence of 5-HT1B receptor sites reported earlier was not related to long post-mortem delays. Some specific labelling was seen with [3H]5-HT, in presence of 8-OH-DPAT. This binding, which is unlikely to be to the 5-HT1B type, could represent labelling to the 5-HT1D or 5-HT1E sites.[1]

References

  1. Apparent absence of serotonin1B receptors in biopsied and post-mortem human brain. Martial, J., Lal, S., Dalpé, M., Olivier, A., de Montigny, C., Quirion, R. Synapse (1989) [Pubmed]
 
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