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110 articoleThis study examines molecular and biological changes associated with depression's progression over time. Research of this type contributes to understanding neurobiological mechanisms underlying depression and may inform evidence-based treatment approaches.
Bright light therapy (BLT) is a evidence-based intervention that regulates mood by influencing circadian rhythms through light-sensitive retinal pathways to the suprachiasmatic nucleus. Strong clinical evidence supports BLT for seasonal affective disorder and major depressive disorder, with emerging benefits for bipolar disorder and insomnia, demonstrating excellent tolerability.
International Federation of Gynecology and Obstetrics guidelines address mental health during menopause, identifying anxiety and depression as prevalent during perimenopause and recommending individualized treatment including cognitive-behavioral therapy, specific antidepressants (escitalopram, venlafaxine), and hormone therapy. The recommendations emphasize early detection through primary care training and highlight that mental health issues during menopause are often overlooked in low- and middle-income countries.
This review examines depression neurobiology across classical and contemporary frameworks, discussing how traditional monoaminergic theories guided SSRIs and SNRIs while highlighting their limitations in treatment response and side effects. Recent discoveries of ketamine and psychedelic compounds have revealed alternative mechanisms involving glutamate signaling and synaptic plasticity, prompting re-evaluation of mechanistic models and circuit-level approaches to developing safer, more effective therapies.
This secondary analysis of 215 adults with major depression found that 53% achieved remission at 12 weeks on antidepressants, with higher baseline severity and specific symptoms (suicidal ideation, psychomotor retardation, hypochondriasis) predicting lower remission odds. Sex differences emerged, with psychomotor retardation and suicidal ideation predicting non-remission in women, while hypochondriasis was the key marker in men.
This study demonstrates that the dopamine D2 receptor (D2R) is essential for the long-term therapeutic effects of fluoxetine (an SSRI) on mood and hippocampal neurogenesis in mouse models of depression. The research reveals that D2R signaling through beta-arrestin 2 and BDNF regulation is crucial for chronic antidepressant action, though not required for acute responses to the drug.
This scoping review examines scientific evidence for rTMS and related techniques (theta-burst stimulation, deep TMS) as therapeutic approaches for treatment-resistant depression, evaluating their effectiveness and safety across clinical trials and laboratory studies. rTMS applied to the prefrontal cortex demonstrates significant antidepressant effects with generally mild, transient adverse effects, and research indicates it produces neurobiological changes in brain connectivity and neurotransmitter systems.
This systematic review identified 10 behavioral tests with comparable human and rodent versions that measure depressive symptoms across species, including assays of valence systems, affective bias, and cognitive function. The translational approach bridges animal and human research paradigms to advance understanding of depression neurobiology and improve treatment development.
This PET imaging study compared serotonin 1A receptor binding across individuals with mood disorders (with/without borderline personality disorder) and healthy controls. Results indicate that elevated serotonin 1A receptor binding is associated with mood disorders rather than borderline personality disorder itself, suggesting distinct neurobiological mechanisms for each condition.
A critical review of a 16-person pilot study found that a well-formulated ketogenic diet over 10-12 weeks showed associations with significant reductions in depression scores (69-71%) and improvements in cognitive function and metabolic markers. The authors appropriately emphasize limitations of the uncontrolled design and call for larger randomized controlled trials to establish causality and explore mechanisms.
This review examines how disruption of circadian rhythms contributes to major depressive disorder through dysregulation of sleep-wake cycles, mood patterns, and genetic variants in clock genes (CLOCK, TIMELESS, CRY1), along with abnormal HPA axis and melatonin signaling. Emerging evidence supports chronotherapeutic approaches such as light therapy and targeted sleep interventions as evidence-based treatments that could be personalized using genetic and molecular markers.
A woman in her 60s with recurrent depression developed severe psychomotor retardation mimicking Parkinson's disease, including tremor and rigidity unresponsive to standard antidepressants. Levodopa produced marked improvement in both motor and depressive symptoms, while a normal dopamine transporter scan ruled out neurodegeneration, confirming the diagnosis of geriatric depression with pseudoparkinsonism.
This bibliometric study analyzes the 50 most-cited research articles on major depressive disorder treatment between 1989-2018, examining publication patterns, study designs, and geographic distribution. The review identifies that randomized controlled trials and meta-analyses dominate the influential literature, with significant contributions from the United States, Canada, and the United Kingdom.
This article examines antidepressant medications registered in Croatia, comparing formulations that contain lactose versus lactose-free variants. The research appears to focus on pharmaceutical formulation differences and regulatory documentation rather than clinical efficacy claims related to lactose content.
This study investigates whether genetic variations in NTRK2 and hippocampal volume measurements are associated with treatment-resistant major depressive disorder. The research examines potential biological markers that could help predict which patients may have poorer responses to antidepressant therapy.
This case report describes major depressive disorder presenting with psychotic features in an elderly patient with cancer, exploring the clinical presentation and psychiatric complications. The work demonstrates evidence-based diagnostic and therapeutic approaches to managing severe depression in medically complex populations.
This feasibility study investigates cold water swimming as a supplementary therapeutic approach for depression management. The research examines practical implementation and preliminary outcomes rather than claiming a cure.
This review examines the relationship between mood disorders (major depression and bipolar disorder) and alterations in biogenic amine metabolites such as histamine, kynurenine, and creatine. The authors propose that understanding these biochemical changes could improve diagnosis, inform treatment development, and clarify biological mechanisms underlying mood disorders.