Journal
BIOLOGICAL PSYCHIATRY
Volume 49, Issue 12, Pages 980-1001Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0006-3223(01)01127-1
Keywords
children; adolescents; depression; neurobiology
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This paper reviews prior research studies examining neurobiological correlates and treatment response of depression in children, adolescents, and adults. Although theta are some similarities in research findings observed across the life cycle, both children and adolescents have been found to differ fram depressed adults on measures of basal cortisol sedation, corticotropin stimulation post-corticotropin releasing hormone (CRH) infusion, response ra several serotonergic probes immunity indices, and efficacy; of a tricyclic medications. These differences are proposed to be doe to 1) developmental factors, 2) stage of illness factors (e.g., number of episodes, total duration of illness), or 3) heterogeneity in clinical outcome (e.g., recurrent unipolar course vs. new-onset bipolar disorder). Relevant clinical and preclinical studies that provide support for these alternate explanations of the discrepant findings are reviewed, and directions for future research are discussed. To determine whether child, adolescent-, and adult-onset depression represent the same condition, it is recommended that researchers II use the same neuroimaging paradigms in child, adolescent and adult depressed cohorts; 2) carefully characterize subjects' stage of illness; and 3) conduct longitudinal clinical and repeat neurobiological assessments of patients of diffrrent ages at various stages of illness. In addition careful attention to familial subtypes (e.g., depressive spectrum disorders vs. familial pure depressive disorders) and environmental factors; (e.g., trauma history) are suggested for future investigations, (C) 2001 Society of Biological Psychiatry.
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