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Full-Text Articles in Medicine and Health Sciences
Preclinical Perspectives On The Mechanisms Underlying The Therapeutic Actions Of Psilocybin In Psychiatric Disorders, Andreas B. Wulff, Charles D. Nichols, Scott M. Thompson
Preclinical Perspectives On The Mechanisms Underlying The Therapeutic Actions Of Psilocybin In Psychiatric Disorders, Andreas B. Wulff, Charles D. Nichols, Scott M. Thompson
School of Medicine Faculty Publications
Psychedelic compounds have shown extraordinary potential in treating a wide range of neuropsychiatric disorders. Psilocybin, for example, has now been shown in several clinical trials to induce a rapid (within days) and persistent (3–12 months) improvement in human treatment-resistant depression and other neuropsychiatric conditions. Here we review the preclinical models and experimental approaches that have been used to study the neurobiological actions of psychedelic drugs. We further summarize the insights these studies have provided into the possible mechanisms underlying the induction of their therapeutic actions, including the receptors to which psychedelics bind and the second messenger signaling cascades that they …
Opioid System's Involvement In Ketamine's Antidepressant-Like Effects, Fan Zhang
Opioid System's Involvement In Ketamine's Antidepressant-Like Effects, Fan Zhang
Theses and Dissertations
Depression is one of the most debilitating disorders in the world. The currently available medications typically have a 2-4 week delay in their therapeutic effects and are ineffective for about 40% of patients. In 2000, a subanesthetic dose (0.5 mg/kg i.e.) of the dissociative anesthetic ketamine was reported to have both rapid and robust antidepressant effects in in treatment-resistant depressed patients. However, the mechanisms responsible for ketamine’s antidepressant effects remain unclear. In 2018, a clinical study reported that pretreatment with the nonselective opioid antagonist naltrexone attenuated the rapid antidepressant effect of ketamine in depressed patients. The current study investigated the …
Clinical Characteristics And Neuroanatomical Predictors Of Acute Antidepressant Outcome For Patients With Comorbid Depression And Mild Cognitive Impairment, Jeffrey N. Motter
Clinical Characteristics And Neuroanatomical Predictors Of Acute Antidepressant Outcome For Patients With Comorbid Depression And Mild Cognitive Impairment, Jeffrey N. Motter
Dissertations, Theses, and Capstone Projects
Background: Older adults presenting with both a depressive disorder (DEP) and cognitive impairment (CI) represent a unique, understudied population. The classification of cognitive impairment severity continues to be debated though it has recently been subtyped into late (LMCI) versus early (EMCI) stages. Previous studies have found associations between treatment outcome and both cortical thickness and white matter hyperintensities (WMH), though report inconsistent directionality and affected regions. In this study, we examined baseline clinical characteristics and neuroanatomical features as prognostic indicators for older adults with comorbid DEP and CI participating in an open antidepressant trial. EMCI is hypothesized to have greater …
Ssri Maintenance Therapy Reduces Rate Of Recurrence For Elderly Patients With First Episode Of Major Depression, Blake J. Arthurs
Ssri Maintenance Therapy Reduces Rate Of Recurrence For Elderly Patients With First Episode Of Major Depression, Blake J. Arthurs
Clinical Research in Practice: The Journal of Team Hippocrates
A critical appraisal and clinical application of Reynolds CF 3rd, Dew MA, Pollock BG, et al. Maintenance treatment of major depression in old age. N Engl J Med. 2006 Mar 16;354(11):1130-8. doi: 10.1056/NEJMoa052619. Based on the appraisal, long term SSRI maintenance therapy is recommended for elderly patients suffering from first episode of major depression.
Ketamine For Depression: A Mixed-Methods Study, Philip E. Wolfson
Ketamine For Depression: A Mixed-Methods Study, Philip E. Wolfson
International Journal of Transpersonal Studies
Prior studies have reported variously on the presence or absence of dissociative effects at subanesthtetic doses of ketamine administered for treatment-resistant depression. This mixedmethods study emulated the protocol used for the studies in question, with IV administration of 0.5mg/kg over 40 minutes with eight experienced ketamine users. Quantitative measures were generally insignificant since this was not a population reporting depression; blood pressure increased as expected by 20-30mm systolic and 6-20mm diastolic, falling rapidly by 20 minutes after completion of the infusion. Individual qualitative reports reports of relaxation, pleasant sensation, decreased cognitive function, and some disabling of ordinary capacities. As experienced …
An Animal Model Of The Motivational Symptoms Of Depression: Testing The Antidepressant Desipramine On An Effort-Related Choice Task, Samantha L. Collins
An Animal Model Of The Motivational Symptoms Of Depression: Testing The Antidepressant Desipramine On An Effort-Related Choice Task, Samantha L. Collins
Honors Scholar Theses
Patients with depression, schizophrenia, and other related disorders often show effort-related motivational symptoms such as anergia, psychomotor slowing, lassitude, and fatigue. Several studies have indicated that dopamine (DA) within the nucleus accumbens (NAc) is involved in the regulation of effort-related behavior. Interference with NAc DA alters response allocation in effort related choice procedures, biasing animals towards the alterative that can be obtained with minimal effort. Previous studies have shown that administration of the vesicular monoamine transporter-2 (VMAT-2) inhibitor tetrabenazine (TBZ) shifts behavior in rats responding on the FR5/chow choice procedure causing a decrease in lever pressing and a compensatory increase …
Selecting Antidepressant Drugs For Management Of Depression In Primary Care (Part 1), Amresh Srivastava
Selecting Antidepressant Drugs For Management Of Depression In Primary Care (Part 1), Amresh Srivastava
Amresh Srivastava
No abstract provided.
Selecting Antidepressant Drugs For Management Of Depression In Primary Care (Part 2), Amresh Srivastava
Selecting Antidepressant Drugs For Management Of Depression In Primary Care (Part 2), Amresh Srivastava
Amresh Srivastava
No abstract provided.
Selecting Antidepressant Drugs For Management Of Depression In Primary Care (Part 1), Amresh Srivastava
Selecting Antidepressant Drugs For Management Of Depression In Primary Care (Part 1), Amresh Srivastava
Psychiatry Presentations
No abstract provided.
Selecting Antidepressant Drugs For Management Of Depression In Primary Care (Part 2), Amresh Srivastava
Selecting Antidepressant Drugs For Management Of Depression In Primary Care (Part 2), Amresh Srivastava
Psychiatry Presentations
No abstract provided.
Short And Long-Term Effects Of Medication And Psychotherapy In The Brief Treatment Of Depression: Further Analyses Of Data From The Nimh Tdcrp, Sidney J. Blatt, David C. Zuroff, Colin M. Bondi, Charles A. Sanislow
Short And Long-Term Effects Of Medication And Psychotherapy In The Brief Treatment Of Depression: Further Analyses Of Data From The Nimh Tdcrp, Sidney J. Blatt, David C. Zuroff, Colin M. Bondi, Charles A. Sanislow
Charles A. Sanislow, Ph.D.
Prior analyses of data from the NIMH sponsored Treatment for Depression Collaborative Research Program (TDCRP; e.g., I. Elkin, 1994) indicated greater reduction of symptoms at midtreatment (8th wk) with Imipramine (IMI-CM) than with Cognitive-behavioral therapy (CBT) and Interpersonal therapy (IPT), but no significant differences in symptom reduction among these 3 active treatments at termination. Current analyses of previously unanalyzed data from ratings by therapists, clinical evaluators, and 162 patients (mean age 35 yrs) at termination and at 18-mo follow-up also indicated no significant differences among these treatments in symptom reduction or ratings of current clinical condition. But significant treatment differences …