Ketamine's rapid antidepressant action is due to specific synaptic effects, researchers report.
Combining neuroimaging and artificial intelligence, researchers identified novel brain signatures unique to the response of each antidepressant.
The placebo effect combined with dopamine levels can determine whether symptoms of depression and social anxiety will improve in patients prescribed SSRI antidepressants. Researchers found the positive effect of the medications was four times higher in patients with high expectations the treatment would work compared to those with lower expectations.
Mirtazapine, an antidepressant commonly prescribed to treat dementia-associated agitation, is no more effective than a placebo and may increase mortality risks, researchers report.
Psilocybin, a natural psychoactive compound currently being considered for the treatment of depression, alters people's emotional states while listening to music. While listening to music, those who used psilocybin reported enhanced emotional processing. Researchers say combining music with psychedelic therapy may have positive benefits for those suffering from depression.
In the absence of neural activity, BDNF expression can still be activated. The findings shed light on how therapeutic ketamine used has an antidepressant effect and how it works in both the long and short term.
Prozac reduced polyunsaturated fatty acid lipid concentrations in the brains of juvenile macaque monkeys.
Allopregnanolone, a neuroactive steroid used in the treatment of postpartum depression, alters neural communication in the basolateral amygdala, an area of the brain associated with emotion and mood regulation. The drug may alter the network associated with chronic stress, which may explain its persistent antidepressant effect.
A new study adds to the growing body of research linking inflammation to depression. Researchers found the molecule histamine directly inhibits the release of serotonin in the brain by attaching to inhibitory receptors on serotonin neurons in mice.
The MeCP2 gene influences ketamine's behavioral effect and strengthens synapses, leading to an improvement in the drug's antidepressant effect over time.
Taking SSRI antidepressants does not increase the risk of developmental delays or autism in children, a new study reports. However, there is an increased risk for ASD and developmental delays in children whose mothers suffer from maternal psychiatric disorders.
Prescribing SSRIs during late childhood to those with genetic risk factors for psychosis can reduce the deterioration of intellectual abilities, a new study reveals. SSRIs appear to have a neuroprotective effect for certain brain areas associated with the onset of psychosis if provided early.
