Depression
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Tryptophan depletion in SSRI-recovered depressed o…
RATIONALE: Recently, a number of studies have challenged the finding that acute tryptophan depletion (TD) increases depressive symptoms in medicated, formerly depressed patients. The present study exa… Read more
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Serotonin function and the mechanism of antidepres…
Brain serotonin content is dependent on plasma levels of the essential amino acid tryptophan. We investigated the behavioral effects of rapid tryptophan depletion in patients in antidepressant-induced… Read more
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Relapse of depression after rapid depletion of try…
BACKGROUND: Major depression is a common disorder but the pathophysiology is poorly understood. Current hypotheses implicate deficient function of brain serotonin pathways because drugs that selective… Read more
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Positron emission tomography measurement of cerebr…
BACKGROUND: Short-term depletion of plasma tryptophan has been shown to result in depressive relapse in patients with remission of major depression. Positron emission tomography and single photon emis… Read more
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Neural and behavioral responses to tryptophan depl…
CONTEXT: An instructive paradigm for investigating the relationship between brain serotonin function and major depressive disorder (MDD) is the response to tryptophan depletion (TD) induced by oral lo… Read more
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Lactate provocation of panic attacks in depressed …
Forty-seven nonmelancholic depressed outpatients were infused with sodium lactate to explore the relationship between history of panic attacks and lactate-induced panic. Lactate panic was rated withou… Read more
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Differences between males and females in rates of …
Rates of serotonin synthesis were measured in the human brain using positron emission tomography. The sensitivity of the method is indicated by the fact that measurements are possible even after a sub… Read more
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Cognitive therapy does not prevent a response to t…
BACKGROUND: Acute tryptophan depletion (ATD) induces depressive symptoms in remitted depressed patients treated with serotonergic medications, but not in patients treated with noradrenergic medication… Read more
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