scholarly journals Rethinking the nature of inhibitory control deficits in Tourette syndrome

Brain ◽  
2020 ◽  
Vol 143 (3) ◽  
pp. 721-722
Author(s):  
Georgina M Jackson ◽  
Stephen R Jackson
Keyword(s):  
Tourette Syndrome ◽  
Inhibitory Control ◽  
Tic Disorders

This scientific commentary refers to ‘Impaired automatic but intact volitional inhibition in primary tic disorders’, by Rawji etal. (doi:10.1093/brain/awaa024).

scholarly journals Altered urinary tetrahydroisoquinoline derivatives in patients with Tourette syndrome: reflection of dopaminergic hyperactivity?

2020 ◽  
Author(s):  
Philipp Capetian ◽  
Veit Roessner ◽  
Caroline Korte ◽  
Susanne Walitza ◽  
Franz Riederer ◽  
...  
Keyword(s):  
Tourette Syndrome ◽  
Diagnostic Value ◽  
Tic Disorders ◽  
Operating Characteristics ◽  
Roc Curve Analysis ◽  
Two Phase ◽  
Dopaminergic Neurotransmission ◽  
Hyperactivity Disorder ◽  
The Central Nervous System ◽  
Chronic Tic Disorders

AbstractTetrahydroisoquinolines (TIQs) such as salsolinol (SAL), norsalsolinol (NSAL) and their methylated derivatives N-methyl-norsalsolinol (NMNSAL) and N-methyl-salsolinol (NMSAL), modulate dopaminergic neurotransmission and metabolism in the central nervous system. Dopaminergic neurotransmission is thought to play an important role in the pathophysiology of chronic tic disorders, such as Tourette syndrome (TS). Therefore, the urinary concentrations of these TIQ derivatives were measured in patients with TS and patients with comorbid attention-deficit/hyperactivity disorder (TS + ADHD) compared with controls. Seventeen patients with TS, 12 with TS and ADHD, and 19 age-matched healthy controls with no medication took part in this study. Free levels of NSAL, NMNSAL, SAL, and NMSAL in urine were measured by a two-phase chromatographic approach. Furthermore, individual TIQ concentrations in TS patients were used in receiver-operating characteristics (ROC) curve analysis to examine the diagnostic value. NSAL concentrations were elevated significantly in TS [434.67 ± 55.4 nmol/l (standard error of mean = S.E.M.), two-way ANOVA, p < 0.0001] and TS + ADHD patients [605.18 ± 170.21 nmol/l (S.E.M.), two-way ANOVA, p < 0.0001] compared with controls [107.02 ± 33.18 nmol/l (S.E.M.), two-way ANOVA, p < 0.0001] and NSAL levels in TS + ADHD patients were elevated significantly in comparison with TS patients (two-way ANOVA, p = 0.017). NSAL demonstrated an AUC of 0.93 ± 0.046 (S.E.M) the highest diagnostic value of all metabolites for the diagnosis of TS. Our results suggest a dopaminergic hyperactivity underlying the pathophysiology of TS and ADHD. In addition, NSAL concentrations in urine may be a potential diagnostic biomarker of TS.

scholarly journals The prevalence of tic disorders in children and adolescents in Brazil

2014 ◽  
Vol 72 (12) ◽  
pp. 942-948 ◽  
Author(s):  
Helvio L. Alves ◽  
Elizabeth M. A. B. Quagliato
Keyword(s):  
Special Education ◽  
Children And Adolescents ◽  
Tourette Syndrome ◽  
Special Education Students ◽  
Tic Disorders ◽  
Education Students ◽  
Tic Disorder ◽  
Item Questionnaire ◽  
Chronic Tic Disorder

Tourette syndrome (TS) and tic disorders represent events of familiar magnitude characterized by involuntary movements and/or vocalization. To determine the prevalence of TS/tic disorders we studied a sample of 762 subjects (388 M, 374 F), between 1992 and 1997, age 6 to 43 years old, taken out of a population of 10,155 subjects (4,918 M, 5,237 F; age: 3-56 years old). A structured 4-item questionnaire, direct interview (multistaged), >1 yr follow-up, were used. 9,565 subjects (4,614 M, 4,951 F) sent back the questionnaires, 3,354 of these (1,671 M, 1,683 F) with positive answers to tics. 42 subjects (31 M, 11 F, age: 7-21 years old, mean: 11 years old) met the DSM-III-R criteria. The total minimal prevalence of TS is 0.43%, with a 3:1 ratio male/female. The minimal prevalence of chronic tic disorder is 2.27%. The total minimal prevalence for tic disorders at all is 2.91%. No special education students participation.

Effects of physical activity on the symptoms of Tourette syndrome: A systematic review

2018 ◽  
Vol 48 (1) ◽  
pp. 13-19 ◽  
Author(s):  
David D. Kim ◽  
Darren E.R. Warburton ◽  
Nana Wu ◽  
Alasdair M. Barr ◽  
William G. Honer ◽  
...  
Keyword(s):  
Physical Activity ◽  
Systematic Review ◽  
Tourette Syndrome ◽  
Case Reports ◽  
Physical Exertion ◽  
Tic Disorders ◽  
Physiological Mechanisms ◽  
Randomized Controlled Studies ◽  
Mesh Terms ◽  
Vigorous Intensity

AbstractThere is irrefutable evidence that routine physical activity or exercise can offer considerable health benefits to individuals living with various mental disorders. However, it is not clear what effect physical activity has on the symptoms of Tourette syndrome. Despite a paucity of evidence, physical activity or exercise has already been recommended by various health organizations for the management of tics. We provide a systematic review of the effects of physical activity or exercise on tic symptomology in individuals with Tourette syndrome. Major electronic databases were searched for all available publications before August 2017. Keywords and MeSH terms included “physical activity” or “exercise” or “exercise therapy” or “physical exertion” or “sports” and “tics” or “tic disorders” or “Tourette.” Eight studies were included, the majority of which were case reports. Despite a number of methodological limitations of the included studies, the review points to a trend that the effects of acute physical activity are intensity-dependent, where light intensity may alleviate and vigorous intensity may exacerbate tics. Chronic physical activity, however, appears to reduce the severity of tics even at higher intensity. Several physiological mechanisms may explain the differential effects of acute and chronic physical activity in Tourette syndrome. Future randomized controlled studies should better characterize the effects of different intensities and types of physical activity in Tourette syndrome.

Assessment and Treatment of Tourette Syndrome and Other Tic Disorders

2010 ◽  
pp. 516-530
Author(s):  
Lawrence Scahill ◽  
Robert A. King ◽  
Paul Lombroso ◽  
Denis G. Sukhodolsky ◽  
James F. Leckman
Keyword(s):  
Tourette Syndrome ◽  
Tic Disorders ◽  
Assessment And Treatment

scholarly journals Evaluation of a cognitive psychophysiological model for management of tic disorders: an open trial

2016 ◽  
Vol 209 (1) ◽  
pp. 76-83 ◽  
Author(s):  
Kieron O'Connor ◽  
Marc Lavoie ◽  
Pierre Blanchet ◽  
Marie-Ève St-Pierre-Delorme
Keyword(s):  
Tourette Syndrome ◽  
Self Esteem ◽  
Current Treatment ◽  
Open Trial ◽  
Tic Disorders ◽  
Tic Disorder ◽  
Chronic Tic Disorder ◽  
Tic Severity ◽  
Sensorimotor Processes

BackgroundTic disorders, in particular chronic tic disorder and Tourette syndrome, affect about 1% of the population. The current treatment of choice is pharmacological or behavioural, addressing tics or the premonitory urges preceding tic onset.AimsThe current study reports an open trial evaluating the effectiveness of a cognitive psychophysiological treatment addressing Tourette-specific sensorimotor activation processes rather than the tic.MethodForty-nine people with Tourette syndrome and 36 people with chronic tics completed 10 weeks of individual cognitive psychophysiological therapy. Outcome measures included two tic severity scales and psychosocial measures.ResultsPost-treatment both groups had significantly improved on the tic scales with strong effect sizes across tic locations and complex and simple tics, maintained at 6-month follow-up with further change in perfectionism and self-esteem.ConclusionsThe cognitive psychophysiological approach targeting underlying sensorimotor processes rather than tics in Tourette's and chronic tic disorder reduced symptoms with a large effect size.

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