Constitutive histamine H2 receptor activity regulates serotonin release in the substantia nigra.
The substantia nigra pars reticulata (SNr) forms a principal output from the basal ganglia. It also receives significant histamine (HA) input from the tuberomammillary nucleus whose functions in SNr remain poorly understood. One identified role is the regulation of serotonin (5-HT) neurotransmission via the HA-H(3) receptor. Here we have explored regulation by another HA receptor expressed in SNr, the H(2)-receptor (H(2)R), by monitoring electrically evoked 5-HT release with fast-scan cyclic ...Expand abstract
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