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  2. Neurotrophic hypothesis of depression - Wikipedia

    en.wikipedia.org/wiki/Neurotrophic_hypothesis_of...

    The neurotrophic hypothesis of depression [1] proposes that major depressive disorder (MDD) is caused, at least partly, by impaired neurotrophic support.Neurotrophic factors (also known as neurotrophins) are a family of closely related proteins which regulate the survival, development, and function of neurons in both the central and peripheral nervous systems.

  3. Biology of depression - Wikipedia

    en.wikipedia.org/wiki/Biology_of_depression

    The serotonin "chemical imbalance" theory of depression, proposed in the 1960s, [35] is not supported by the available scientific evidence. [ 35 ] [ 36 ] SSRIs alter the balance of serotonin inside and outside of neurons: their clinical antidepressant effect (which is robust in severe depression [ 37 ] ) is likely due to more complex changes in ...

  4. Dopamine receptor D4 - Wikipedia

    en.wikipedia.org/wiki/Dopamine_receptor_D4

    The dopamine receptor D 4 is a dopamine D2-like G protein-coupled receptor encoded by the DRD4 gene on chromosome 11 at 11p15.5. [5] The structure of DRD4 has been reported in complex with the antipsychotic drug nemonapride. [6] As with other dopamine receptor subtypes, the D 4 receptor is activated by the neurotransmitter dopamine.

  5. Long-term depression - Wikipedia

    en.wikipedia.org/wiki/Long-term_depression

    In neurophysiology, long-term depression (LTD) is an activity-dependent reduction in the efficacy of neuronal synapses lasting hours or longer following a long patterned stimulus. LTD occurs in many areas of the CNS with varying mechanisms depending upon brain region and developmental progress.

  6. Serotonin - Wikipedia

    en.wikipedia.org/wiki/Serotonin

    Serotonin (/ ˌ s ɛr ə ˈ t oʊ n ɪ n, ˌ s ɪər ə-/) [6] [7] [8] or 5-hydroxytryptamine (5-HT) is a monoamine neurotransmitter.Its biological function is complex, touching on diverse functions including mood, cognition, reward, learning, memory, and numerous physiological processes such as vomiting and vasoconstriction.

  7. Behavioral theories of depression - Wikipedia

    en.wikipedia.org/wiki/Behavioral_theories_of...

    Three alternative therapies emerged over the next 4 years: Lewinsohn's social learning theory, Patterson's anti-depression milieu, and Lazarus' behavioral deprivation. Social learning theory focused on identifying and avoiding behaviors that increased depressive thoughts. Anti-depression milieu encouraged catharsis to overcome depression.

  8. Bitcoin races past $100,000, fueled by post-election rally - AOL

    www.aol.com/bitcoin-races-past-100-000-184139861...

    The price of bitcoin surpassed $100,000 for the first time on Friday, soaring to a fresh high as the world’s largest cryptocurrency extended a rally set off by the election of former President ...

  9. Neurotransmitter - Wikipedia

    en.wikipedia.org/wiki/Neurotransmitter

    For example, the precursor of serotonin is the amino acid tryptophan. Peptide neurotransmitters, or neuropeptides, are protein transmitters which are larger than the classical small-molecule neurotransmitters and are often released together to elicit a modulatory effect. [4] Purine neurotransmitters, like ATP, are

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