Electrocortical effects of acute tryptophan depletion on emotive facial processing in depression-prone individuals

2010 ◽  
Vol 20 (7) ◽  
pp. 473-486 ◽  
Author(s):  
Natalia Jaworska ◽  
Andrea Thompson ◽  
Dhrasti Shah ◽  
Derek Fisher ◽  
Vadim Ilivitsky ◽  
...  
Keyword(s):  
Acute Tryptophan Depletion ◽  
Tryptophan Depletion ◽  
Facial Processing

scholarly journals Effects of lowered serotonin transmission on cocaine-induced striatal dopamine response: PET [11C]raclopride study in humans

2011 ◽  
Vol 199 (5) ◽  
pp. 391-397 ◽  
Author(s):  
Sylvia M. L. Cox ◽  
Chawki Benkelfat ◽  
Alain Dagher ◽  
J. Scott Delaney ◽  
France Durand ◽  
...  
Keyword(s):  
Substance Use ◽  
Substance Use Disorders ◽  
Striatal Dopamine ◽  
Emission Tomography ◽  
Acute Tryptophan Depletion ◽  
Tryptophan Depletion ◽  
Comorbid Conditions ◽  
Drug Craving ◽  
Positron Emission ◽  
Wide Range

BackgroundLow serotonin transmission is thought to increase susceptibility to a wide range of substance use disorders and impulsive traits.AimsTo investigate the effects of lowered serotonin on cocaine-induced (1.0 mg/kg cocaine, self-administered intranasally) dopamine responses and drug craving.MethodIn non-dependent cocaine users, serotonin transmission was reduced using the acute tryptophan depletion method. Striatal dopamine responses were measured using positron emission tomography with [11C]raclopride.ResultsAcute tryptophan depletion increased drug craving and striatal dopamine responses to cocaine. These acute tryptophan depletion-induced increases did not occur in the absence of cocaine.ConclusionsThe results suggest that low serotonin transmission can increase dopaminergic and appetitive responses to cocaine. These findings might identify a mechanism by which individuals with low serotonin are at elevated risk for both substance use disorders and comorbid conditions.

scholarly journals Evaluating the role of serotonin in hot flashes after breast cancer using acute tryptophan depletion

2009 ◽  
Vol 16 (4) ◽  
pp. 644-652 ◽  
Author(s):  
Janet S. Carpenter ◽  
Menggang Yu ◽  
Jingwei Wu ◽  
Diane Von Ah ◽  
Jennifer Milata ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Hot Flashes ◽  
Acute Tryptophan Depletion ◽  
Tryptophan Depletion

B74 THE EFFECTS OF ACUTE TRYPTOPHAN DEPLETION ON BDNF PROTEIN LEVELS IN BRAIN AND SERUM OF MALE AND FEMALE RATS

2005 ◽  
Vol 16 (Supplement 1) ◽  
pp. S89
Author(s):  
E.L. Van Donkelaar ◽  
L.A.W. Jans ◽  
A. Blokland ◽  
N.E.P. Deutz ◽  
G. Kenis ◽  
...  
Keyword(s):  
Female Rats ◽  
Acute Tryptophan Depletion ◽  
Tryptophan Depletion ◽  
Male And Female ◽  
Protein Levels ◽  
Male And Female Rats

scholarly journals Effects of a novel method of acute tryptophan depletion on plasma tryptophan and cognitive performance in healthy volunteers

2004 ◽  
Vol 178 (1) ◽  
pp. 92-99 ◽  
Author(s):  
E. A. T. Evers ◽  
D. E. Tillie ◽  
F. M. van der Veen ◽  
C. K. Lieben ◽  
J. Jolles ◽  
...  
Keyword(s):  
Healthy Volunteers ◽  
Cognitive Performance ◽  
Acute Tryptophan Depletion ◽  
Tryptophan Depletion ◽  
Plasma Tryptophan ◽  
Novel Method

scholarly journals Probabilistic reversal learning under acute tryptophan depletion in healthy humans: a conventional analysis

2020 ◽  
Vol 34 (5) ◽  
pp. 580-583
Author(s):  
Jonathan W Kanen ◽  
Frederique E Arntz ◽  
Robyn Yellowlees ◽  
Rudolf N Cardinal ◽  
Annabel Price ◽  
...  
Keyword(s):  
Reversal Learning ◽  
Negative Feedback ◽  
Acute Tryptophan Depletion ◽  
Tryptophan Depletion ◽  
Serotonin Synthesis ◽  
Male And Female ◽  
Healthy Humans ◽  
Enhanced Sensitivity ◽  
Conventional Analysis ◽  
Probabilistic Reversal Learning

The involvement of serotonin in responses to negative feedback is well established. Acute serotonin reuptake inhibition has enhanced sensitivity to negative feedback (SNF), modelled by behaviour in probabilistic reversal learning (PRL) paradigms. Whilst experiments employing acute tryptophan depletion (ATD) in humans, to reduce serotonin synthesis, have shown no clear effect on SNF, sample sizes have been small. We studied a large sample of healthy volunteers, male and female, and found ATD had no effect on core behavioural measures in PRL. These results indicate that ATD effects can differ from other manipulations of serotonin expected to have a parallel or opposing action.

Cardiac slowing and acute tryptophan depletion: a comment on the paper by van der Veen et al.

2008 ◽  
Vol 203 (4) ◽  
pp. 831-833 ◽  
Author(s):  
Sean D. Hood ◽  
Simon J. C. Davies ◽  
David J. Nutt
Keyword(s):  
Acute Tryptophan Depletion ◽  
Tryptophan Depletion ◽  
Cardiac Slowing
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