Published in:
01-04-2015 | Original Article
RETRACTED ARTICLE: Association of
Catechol-O-methyltransferase val/met polymorphism with cognitive function in Gilles de
la Tourette syndrome patients
Authors:
Weidong Ji, Ning Li, Kang Ju, Hong Zheng, Chuang Yang, Ping Xu, Silu Chen, Aiai Cao, Xue Chen, Lanting Guo
Published in:
Neurological Sciences
|
Issue 4/2015
Login to get access
Abstract
Gilles de la Tourette syndrome (GTS) is a kind of neuropsychiatric disorder with
childhood onset. The cognitive dysfunction caused by GTS could affect the growth and
learning of children and adolescents. The mechanism of cognitive functions was
associated with dopaminergic system, thus we access the associations between
polymorphism of some dopaminergic system-related genes including
Catechol-O-methyltransferase (COMT) met/val,
Dopamine receptor D4 (DRD4) exon III 48 bp VNTR
(variable number of tandem repeats), Interleukin 1 (IL-1) Ra 86 bp and IL-1β exon 5, and
cognitive functions in GTS patients. Genotyping analysis was performed through
polymerase chain reaction (PCR). Test for cognitive functions of GTS patients
included modified wisconsin card sorting test (WCST), trail making test, visual
reproduction test, stroop test and verbal fluency test. The patients with COMT met/met genotype showed less perseverative errors
in modified WCST test compared with patients with COMT val/val genotype (P < 0.05). Meanwhile, patients without allele val had better delayed
memory in visual reproduction test, less errors in the stroop test and less
perseverative errors in modified WCST test compared with patients with allele val
(P < 0.05). However, no significant
difference was found in cognitive functions among patients with different genotypes
or alleles of polymorphisms of DRD4 exon III
48 bp VNTR, IL-1
Ra 86 bp and IL-1β exon 5 (P > 0.05). Polymorphism of COMT
met/val was correlated with cognitive functions in GTS patients. This study provided
basis for the analysis of molecular genetic pathology of cognitive dysfunctions in
GTS.