Respuesta :
Analysis:
Delta-9-tetrahydrocannabinol (Delta9-THC) has a substantial influence on higher cognitive processes, and it has been linked to the emergence or worsening of clinical symptoms of schizophrenia.
These activities appear to be mediated through the CB1 receptor, which is the most abundant cannabinoid receptor in the brain.
However, the location of the CB1 receptor in monkey neocortical areas that influence cognitive activities remains unknown.
Using antibodies that selectively target the N- or C-terminus of the CB1 receptor, we studied the immunocytochemical localization of the CB1 receptor in the brains of macaque monkeys and humans.
In monkeys, CB1 immunoreactivity was most strong in axons and boutons. CB1-immunoreactive (IR) axons showed significant variation in density and laminar distribution throughout neocortical areas of the monkey brain.
When compared to main sensory and motor cortices, neocortical association regions such as the prefrontal and cingulate cortices have a greater density and a distinct laminar pattern of CB1-IR axons.
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