Brief Title
The Pathophysiology of Tourette Syndrome: a Multimodal Study
Official Title
fMRI Study on Iron Deficiency in the Pathological Mechanism of Tourette Syndrome
Brief Summary
The purpose of this study is to characterize the functional and anatomical connectivity
changes in Tourette syndrome and its relation with iron deficiency.
Detailed Description
Tourette syndrome (TS) is a childhood-onset chronic neuropsychiatric disorder with an
increasing prevalence (range 0.05-3%).The investigators previous study showed that lower
serum ferritin and iron levels in children with Tourette syndrome than in healthy children.
The exact mechanism explaining how iron deficiency contributes to the pathophysiology of TS
is unclear.One question is whether or not peripheral iron deficiency in children with
Tourette syndrome can inflence the brain extrapyramid structure and resting state brain
function？Another question is how well peripheral iron indices correlate with central iron
content？ The third question is for TS children with peripheral iron deficiency, oral iron
supplement (5mg/Kg/d) at least 8 weeks, the peripheral iron indicies return to normal levels,
how the brain iron contents and the relative structure and brain function change?, To test
the above-metioned hypothesis, functional magnetic resonance imaging (fMRI) , diffusion
tensor imaging (DTI) and susceptibility weighted imaging (SWI) are applied to investigate the
volume change of extrapyramid structure such as caudate nucleus and putamen, resting-state
brain function and brain iron content before and after oral iron supplementation in TS
children with peripheral iron deficiency, TS children with peripheral normal iron levels and
normal healthy controls. The investigators hope to confirm that iron deficiency may play a
causal role in the dopamine metabolism and it helps to further explore the pathophysiology of
Tourette syndrome and also would contribute to significant advance in the therapeutic option
for TS children with peripheral iron deficiency.
Study Type
Observational [Patient Registry]
Primary Outcome
Amplitude of low frequency fluctuation of BOLD signal in Tourette syndrome and its relation with iron deficiency
Secondary Outcome
Brain iron levels in Tourette syndrome
Condition
Tourette Syndrome
Publications
* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline.
Recruitment Information
Estimated Enrollment
40
Start Date
December 2013
Completion Date
April 2017
Primary Completion Date
November 2016
Eligibility Criteria
Inclusion Criteria:
- 6-12 years old
- Characterized by vocal tic and muscle twitch
- No positive signs was found through neurological examination, no significant
psychomotor retardation,
Exclusion Criteria:
- Hepatolenticular degeneration
- Rheumatic chorea
- Myoclonic epilepsy
- History of mental disease or brain trauma
Gender
All
Ages
6 Years - 12 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Contacts
Jianhua Feng, Doctor, ,
Location Countries
China
Location Countries
China
Administrative Informations
NCT ID
NCT02497807
Organization ID
SAHZJU_CCBD_TouretteS
Responsible Party
Principal Investigator
Study Sponsor
Second Affiliated Hospital, School of Medicine, Zhejiang University
Study Sponsor
Jianhua Feng, Doctor, Principal Investigator, Second affiliated hospital,zhejiang University,school of medicine,
Verification Date
April 2016