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The serotonin transporter (SERT or 5-HTT) also known as the sodium-dependent serotonin transporter and solute carrier family 6 member 4 is a protein that in humans is encoded by the SLC6A4 gene. [5] SERT is a type of monoamine transporter protein that transports the neurotransmitter serotonin from the synaptic cleft back to the presynaptic ...
5-HTTLPR (serotonin-transporter-linked promoter region) is a degenerate repeat (redundancy in the genetic code) polymorphic region in SLC6A4, the gene that codes for the serotonin transporter. Since the polymorphism was identified in the middle of the 1990s, [ 1 ] [ 2 ] it has been extensively investigated, e.g., in connection with ...
A 2003 study proposed that a gene-environment interaction (GxE) may explain why life stress is a predictor for depressive episodes in some individuals, but not in others, depending on an allelic variation of the serotonin-transporter-linked promoter region . [15]
They act by antagonizing the α 2-adrenergic receptor and certain serotonin receptors such as 5-HT 2A and 5-HT 2C, [1] but also 5-HT 3, [1] 5-HT 6, and/or 5-HT 7 in some cases. By blocking α 2 -adrenergic autoreceptors and heteroreceptors , NaSSAs enhance adrenergic and serotonergic neurotransmission in the brain involved in mood regulation ...
BDNF is involved in depression through its effects on serotonin. BDNF has been shown to promote the development, function, and expression of serotonergic neurons. [28] Because more active serotonin results in more positive moods, antidepressants work to increase serotonin levels.
It has been observed that the pathology of depression involves dysfunction of monoamine neurotransmitter circuits in the CNS, particularly of serotonin and norepinephrine. Selective serotonin reuptake inhibitors (SSRIs) are the most widely used antidepressant and include fluoxetine (Prozac), citalopram (Celexa), and fluvoxamine (Luvox). These ...
5-Hydroxytryptamine receptor 2B (5-HT 2B) also known as serotonin receptor 2B is a protein that in humans is encoded by the HTR2B gene. [ 5 ] [ 6 ] 5-HT 2B is a member of the 5-HT 2 receptor family that binds the neurotransmitter serotonin (5-hydroxytryptamine, 5-HT).
[192] [193] A large cohort study conducted by researchers in the Netherlands investigated the association between depressive disorders, symptoms, and antidepressants with inflammation. The study showed decreased levels of interleukin (IL)-6, a cytokine that has proinflammatory effects, in patients taking SSRIs compared to non-medicated patients ...