Navigation Links
Psilocybin inhibits the processing of negative emotions in the brain
Date:5/7/2014

Emotions like fear, anger, sadness, and joy enable people to adjust to their environment and react flexibly to stress and strain and are vital for cognitive processes, physiological reactions, and social behaviour. The processing of emotions is closely linked to structures in the brain, i.e. to what is known as the limbic system. Within this system the amygdala plays a central role above all it processes negative emotions like anxiety and fear. If the activity of the amygdala becomes unbalanced, depression and anxiety disorders may develop.

Researchers at the Psychiatric University Hospital of Zurich have now shown that psilocybin, the bioactive component in the Mexican magic mushroom, influences the amygdala, thereby weakening the processing of negative stimuli. These findings could "point the way to novel approaches to treatment" comments the lead author Rainer Krhenmann on the results which have now been published in the renowned medical journal "Biological Psychiatry".

Psilocybin inhibits the processing of negative emotions in the amygdala

The processing of emotions can be impaired by various causes and elicit mental disorders. Elevated activity of the amygdala in response to stimuli leads to the neurons strengthening negative signals and weakening the processing of positive ones. This mechanism plays an important role in the development of depression and anxiety disorders. Psilocybin intervenes specifically in this mechanism as shown by Dr. Rainer Krhenmann's research team of the Neuropsychopharmacology and Brain Imaging Unit led by Prof. Dr. Franz Vollenweider.

Psilocybin positively influences mood in healthy individuals. In the brain, this substance stimulates specific docking sites for the messenger serotonin. The scientists therefore assumed that psilocybin exerts its mood-brightening effect via a change in the serotonin system in the limbic brain regions. This could, in fact, be demonstrated using functional magnetic resonance imaging (fMRI). "Even a moderate dose of psilocybin weakens the processing of negative stimuli by modifying amygdala activity in the limbic system as well as in other associated brain regions", continues Krhenmann. The study clearly shows that the modulation of amygdalaactivity is directly linked to the experience of heightened mood.

Next study with depressive patients

According to Krhenmann, this observation is of major clinical importance. Depressive patients in particular react more to negative stimuli and their thoughts often revolve around negative contents. Hence, the neuropharmacologists now wish to elucidate in further studies whether psilocybin normalises the exaggerated processing of negative stimuli as seen in neuroimaging studies of depressedpatients - and may consequently lead to improved mood in these patients. .

Rainer Krhenmann considers research into novel approaches to treatment very important, because current available drugs for the treatment of depression and anxiety disorders are not effective in all patients and are often associated with unwanted side effects.


'/>"/>

Contact: Franz Vollenweider
vollen@bli.uzh.ch
41-443-842-404
University of Zurich
Source:Eurekalert

Related medicine news :

1. Baicalin inhibits neurotoxicity of colistin sulfate effectively
2. Mayo Clinic finds experimental drug inhibits growth in all stages of common kidney cancer
3. TG02 Potently Inhibits the Proliferation and Survival of Multiple Myeloma Cell Lines through Depletion of the Key Survival Protein MCL-1
4. Kentucky team inhibits Alzheimers biomarkers in animal model by targeting astrocytes
5. New monoclonal antibody inhibits tumor growth in advanced solid tumors in phase I clinical trial
6. Molecule found that inhibits recovery from stroke
7. Bloodstream scavenger inhibits clotting without increased bleeding
8. Changes in processing, handling could reduce commercial fishing injuries
9. Complex Event Processing (CEP) Market (Fraud Detection, Sentiment Analysis, Transportation & Logistics) Worth $3,322 Million by 2018 – New Report by MarketsandMarkets
10. Sensory Processing Disorder Foundation to Participate in Colorado Gives Day
11. STAR Center and SPD Foundation Present Informal Webinar Sessions on Topics of Interest to Those Impacted by Sensory Processing Disorder
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... October 13, 2017 , ... Global Healthcare Management’s 4th Annual Kids Fun Run ... This free event, sponsored by Global Healthcare Management’s CEO, Jon Letko, is aimed ... geared towards children of all ages; it is a non-competitive, non-timed event, which is ...
(Date:10/13/2017)... ... October 13, 2017 , ... “America On The Brink”: ... “America On The Brink” is the creation of published author, William Nowers. ... As a WWII veteran, he spent thirty years in the Navy. Following ...
(Date:10/12/2017)... ... October 12, 2017 , ... IsoComforter, Inc. ( ... today the introduction of an innovative new design of the shoulder pad. The ... get maximum comfort while controlling your pain while using cold therapy. By utilizing ice ...
(Date:10/12/2017)... ... , ... HMP , a leader in healthcare events and education, today announced ... Award for ‘Best B-to-B Healthcare Website.’ Winners were announced during the Eddie & Ozzie ... competition recognizes editorial and design excellence across a range of sectors. This year’s program ...
(Date:10/12/2017)... ... 12, 2017 , ... In the United States, single-family home ... states—like New York, New Jersey, Massachusetts, Texas, Virginia, Connecticut, and California—the average is ... low property-tax rates, which contributes to the relatively lower cost of living in ...
Breaking Medicine News(10 mins):
(Date:10/12/2017)... --  Divoti USA will engrave and process all ... the latest FDA requirements, which stipulates new criteria regarding medical device ... of Medical ID jewelry such as Medical ID Bracelets, can rest ... terms of the new FDA requirements . ... Divoti offers this dark mark fiber laser engraving ...
(Date:10/11/2017)... , Oct. 11, 2017  Caris Life Sciences ... on fulfilling the promise of precision medicine, today announced ... joined Caris, Precision Oncology Alliance™ (POA) as its 17 ... centers, the St. Jude Crosson Cancer Institute will help ... the use of tumor profiling, making cancer treatment more ...
(Date:10/10/2017)... ORANGE COUNTY, Calif. , Oct. 10, 2017  NDS received ... Mobile  — a medical-grade battery-powered display stand specifically designed for ... aims to transform technology into a clinical solution to support the ... costs. Innovative Design ... NDS ZeroWire Mobile Wireless Solution ...
Breaking Medicine Technology: