Antidepressive Agents

Publication Title: 
Journal of Clinical Psychopharmacology

Antidepressant continuation studies have used 2 different designs. In the placebo substitution design, all patients are initially treated with active medication in an open-label fashion, and then treatment responders are randomized to continue with medication or switch to placebo in a double-blind manner. In the extension design, patients are randomized to a double-blind placebo-controlled acute study at the outset, and responders to active treatment and placebo are continued on the treatment to which they initially responded.

Author(s): 
Zimmerman, Mark
Posternak, Michael A.
Ruggero, Camilo J.
Publication Title: 
Nature

The mechanisms that determine the lifespan of an organism are still largely a mystery. One goal of ageing research is to find drugs that would increase lifespan and vitality when given to an adult animal. To this end, we tested 88,000 chemicals for the ability to extend the lifespan of adult Caenorhabditis elegans nematodes. Here we report that a drug used as an antidepressant in humans increases C. elegans lifespan. In humans, this drug blocks neural signalling by the neurotransmitter serotonin. In C.

Author(s): 
Petrascheck, Michael
Ye, Xiaolan
Buck, Linda B.
Publication Title: 
Nature

The mechanisms that determine the lifespan of an organism are still largely a mystery. One goal of ageing research is to find drugs that would increase lifespan and vitality when given to an adult animal. To this end, we tested 88,000 chemicals for the ability to extend the lifespan of adult Caenorhabditis elegans nematodes. Here we report that a drug used as an antidepressant in humans increases C. elegans lifespan. In humans, this drug blocks neural signalling by the neurotransmitter serotonin. In C.

Author(s): 
Petrascheck, Michael
Ye, Xiaolan
Buck, Linda B.
Publication Title: 
Postgraduate Medicine

Obesity is a pandemic with many complications that increase the societal disease burden and cost of health care, and decrease longevity and quality of life. Currently, 1 in 3 adults in the United States is obese. Physicians must therefore regularly confront obesity and its consequent diseases, and develop strategies for effective treatment and management. This article summarizes current lifestyle modifications, pharmacological treatment, and surgical options for the management of obesity and discusses the benefits, limitations, and risks of each.

Author(s): 
Hussain, Syed Sufyan
Bloom, Stephen Robert
Publication Title: 
Molecular Psychiatry

Telomeres are DNA-protein complexes that cap linear DNA strands, protecting DNA from damage. When telomeres critically shorten, cells become susceptible to senescence and apoptosis. Telomerase, a cellular ribonucleoprotein enzyme, rebuilds the length of telomeres and promotes cellular viability. Leukocyte telomeres are reportedly shortened in major depression, but telomerase activity in depression has not been previously reported.

Author(s): 
Wolkowitz, O. M.
Mellon, S. H.
Epel, E. S.
Lin, J.
Reus, V. I.
Rosser, R.
Burke, H.
Compagnone, M.
Nelson, J. C.
Dhabhar, F. S.
Blackburn, E. H.
Publication Title: 
Progress in Neuro-Psychopharmacology & Biological Psychiatry

OBJECTIVES: The "neurotrophin hypothesis" of depression posits a role of brain-derived neurotrophic factor (BDNF) in depression, although it is unknown whether BDNF is more involved in the etiology of depression or in the mechanism of action of antidepressants. It is also unknown whether pre-treatment serum BDNF levels predict antidepressant response. METHODS: Thirty un-medicated depressed subjects were treated with escitalopram (N=16) or sertraline (N=14) for 8 weeks. Twenty-five of the depressed subjects completed 8 weeks of antidepressant treatment and had analyzable data.

Author(s): 
Wolkowitz, Owen M.
Wolf, Jessica
Shelly, Wendy
Rosser, Rebecca
Burke, Heather M.
Lerner, George K.
Reus, Victor I.
Nelson, J. Craig
Epel, Elissa S.
Mellon, Synthia H.
Publication Title: 
Brain, Behavior, and Immunity

Chronic inflammation and oxidative stress have been implicated in the pathophysiology of Major Depressive Disorder (MDD), as well as in a number of chronic medical conditions. The aim of this study was to examine the relationship between peripheral inflammatory and oxidative stress markers in un-medicated subjects with MDD compared to non-depressed healthy controls and compared to subjects with MDD after antidepressant treatment. We examined the relationships between IL-6, IL-10, and the IL-6/IL-10 inflammatory ratio vs.

Author(s): 
Rawdin, B. J.
Mellon, S. H.
Dhabhar, F. S.
Epel, E. S.
Puterman, E.
Su, Y.
Burke, H. M.
Reus, V. I.
Rosser, R.
Hamilton, S. P.
Nelson, J. C.
Wolkowitz, O. M.
Publication Title: 
The World Journal of Biological Psychiatry: The Official Journal of the World Federation of Societies of Biological Psychiatry

Stress is commonly associated with a variety of psychiatric conditions, including major depression, and with chronic medical conditions, including diabetes and insulin resistance. Whether stress causes these conditions is uncertain, but plausible mechanisms exist by which such effects might occur. To the extent stress-induced hormonal alterations (e.g., chronically elevated cortisol levels and lowered dehydroepiandrosterone [DHEA] levels) contribute to psychiatric and medical disease states, manipulations that normalize these hormonal aberrations should prove therapeutic.

Author(s): 
Wolkowitz, O. M.
Epel, E. S.
Reus, V. I.
Publication Title: 
Molecular Psychiatry

Telomeres are DNA-protein complexes that cap linear DNA strands, protecting DNA from damage. When telomeres critically shorten, cells become susceptible to senescence and apoptosis. Telomerase, a cellular ribonucleoprotein enzyme, rebuilds the length of telomeres and promotes cellular viability. Leukocyte telomeres are reportedly shortened in major depression, but telomerase activity in depression has not been previously reported.

Author(s): 
Wolkowitz, O. M.
Mellon, S. H.
Epel, E. S.
Lin, J.
Reus, V. I.
Rosser, R.
Burke, H.
Compagnone, M.
Nelson, J. C.
Dhabhar, F. S.
Blackburn, E. H.
Publication Title: 
Progress in Neuro-Psychopharmacology & Biological Psychiatry

Suicide behavior (SB) spans a spectrum ranging from suicidal ideation to suicide attempts and completed suicide. Strong evidence suggests a genetic susceptibility to SB, including familial heritability and common occurrence in twins. This review addresses recent molecular genetic studies in SB that include case-control association, genome gene-expression microarray, and genome-wide association (GWA). This work also reviews epigenetics in SB and pharmacogenetic studies of antidepressant-induced suicide.

Author(s): 
Tsai, Shih-Jen
Hong, Chen-Jee
Liou, Ying-Jay

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