This study just ripped an enormous hole in my theory of antagonist resensitization:
Desensitization of 5-HT
1A
Autoreceptors by a
Low Chronic Fluoxetine Dose
Effect of the Concurrent Administration
of WAY-100635
Ildefonso Hervás, Ph.D., M. Teresa Vilaró, Ph.D., Luz Romero, Ph.D., M. Cecilia Scorza, M.D.,
Guadalupe Mengod, Ph.D., and Francesc Artigas, Ph.D.
"In keeping with the above functional studies, the
prolonged treatment with WAY-100635 alone or in
combination with fluoxetine did not up-regulate the
density of 5-HT1A receptors and its encoding mRNA."
"This observation, although puzzling, is indicative that
WAY-100635 does not up-regulate or sensitize 5-HT1A
autoreceptors in vitro."
And the search continues...