Dopamine and Serotonin in Mood and Psychosis Video
Dysregulation of the neurotransmitters dopamine and serotonin may be associated with neuropsychiatric disorders such as schizophrenia, depression, and bipolar disorder. Targeting dopamine (D2) and serotonin (5-HT1A, 5-HT2A) receptors may help address symptoms of neuropsychiatric conditions such as depression, bipolar disorder, and schizophrenia.
Transcript:
Dopamine and serotonin in mood and psychosis. Dopamine and serotonin are neurotransmitters thought to be involved in mood, psychosis, memory, and cognition. Dysregulations of these neurotransmitters may be associated with neuropsychiatric disorders, including schizophrenia, depression, and bipolar disorder. While these neurotransmitters act on a variety of receptors, dopamine D2 receptors in the striatum and serotonin 5-HT1A and 5-HT2A receptors in the prefrontal cortex may play an important and interconnected role in mood and psychosis.
Antagonism of dopamine D2 receptors may help address symptoms of neuropsychiatric disorders. However, this approach can be associated with adverse effects. Dual antagonism of dopamine D2 and serotonin 5HT2A receptors may increase dopamine release in the striatum, resulting in competition for the D2 receptor. This may reduce dopamine D2 receptor antagonism, and may theoretically mediate adverse effects, such as extrapyramidal symptoms.
Additionally, activation of the serotonin 5HT1A receptor by a partial or full agonism increases serotonin transmission. This may theoretically be associated with antidepressant effects, while also helping mediate extrapyramidal side effects. Thus, antagonizing dopamine D2 and serotonin 5-HT2A receptors, and also activating serotonin 5 -HT1A receptors, is hypothesized to help mitigate adverse effects and may reduce symptoms of depression. Targeting serotonin and dopamine pathways are thought to play a role in the management of bipolar disorder, depression, and schizophrenia.
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