scholarly journals Tropane-Based Ibogaine Analog Rescues Folding-Deficient Serotonin and Dopamine Transporters

Author(s):  
Shreyas Bhat ◽  
Daryl A. Guthrie ◽  
Ameya Kasture ◽  
Ali El-Kasaby ◽  
Jianjing Cao ◽  
...  

Author(s):  
Yayoi Shigemune ◽  
Iori Kawasaki ◽  
Akira Midorikawa ◽  
Toru Baba ◽  
Atsushi Takeda ◽  
...  

AbstractBoth intrinsic and extrinsic motivation are believed to involve brain regions that are innervated by the dopaminergic pathway. Although dopaminergic neurons in the midbrain deteriorate in Parkinson’s disease (PD), it remains unclear whether intrinsic motivation is impaired in PD patients. To address this issue, we investigated intrinsic motivation in PD patients using a task designed to assess the “Pandora effect,” which constitutes a curiosity for resolving uncertainty, even if this curiosity is likely to result in negative consequences. Twenty-seven PD patients and 27 age-matched healthy controls (HCs) completed a curiosity task in which they were required to decide either to view or skip negative pictures (e.g., snakes, spiders) and an examination battery that included the Mini-Mental State Examination, a verbal fluency test, the Trail Making Test, 10-word recall tests, and questionnaires for behavioral inhibition/activation and depression. DaTSCAN images to assess the distribution of dopamine transporters in the striatum were acquired only from PD patients. The results revealed that PD patients, relative to the HCs, viewed the pictures less frequently under both the certain and uncertain conditions. However, both the PD patients and HCs viewed the pictures at a higher frequency under the uncertain condition than under the certain condition. In the PD patients, the proportion of pictures viewed under the certain condition was positively correlated with the distribution of dopamine transporters in the striatum. These results suggest that despite the overall decreasing level of interest in viewing negative pictures, the motivation to resolve uncertainty is relatively intact in PD patients.



2006 ◽  
Vol 61 (2) ◽  
pp. 496-500 ◽  
Author(s):  
Amrat Patel ◽  
George Uhl ◽  
Michael J. Kuhar


2012 ◽  
Vol 287 (22) ◽  
pp. 18524-18534 ◽  
Author(s):  
Simon Bulling ◽  
Klaus Schicker ◽  
Yuan-Wei Zhang ◽  
Thomas Steinkellner ◽  
Thomas Stockner ◽  
...  


2008 ◽  
Vol 31 (1) ◽  
pp. 102-109 ◽  
Author(s):  
Andrea Panzacchi ◽  
Rosa Maria Moresco ◽  
Valentina Garibotto ◽  
Angelo Antonini ◽  
Clara Gobbo ◽  
...  


Synapse ◽  
1999 ◽  
Vol 31 (2) ◽  
pp. 134-139 ◽  
Author(s):  
Sylvie Chalon ◽  
Patrick Emond ◽  
Sylvie Bodard ◽  
Marie-Paule Vilar ◽  
Cynthia Thiercelin ◽  
...  


2013 ◽  
Vol 37 (8) ◽  
pp. 1738-1753 ◽  
Author(s):  
Dorothy J. Yamamoto ◽  
Anna M. Nelson ◽  
Bruce H. Mandt ◽  
Gaynor A. Larson ◽  
Jacki M. Rorabaugh ◽  
...  


2013 ◽  
Vol 85 (2) ◽  
pp. 208-217 ◽  
Author(s):  
Kasper Severinsen ◽  
Heidi Koldsø ◽  
Katrine Almind Vinberg Thorup ◽  
Christina Schjøth-Eskesen ◽  
Pernille Thornild Møller ◽  
...  


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