Abstract:
OBJECTIVE:Previous studies have indicated that the immune may be involved in the pathogenesis of tardive dyskinesia (TD). Some genetic polymorphisms in the human leukocyte antigen (HLA) I and II regions have been associated with TD, and the tumor necrosis factor-α (TNF-α) gene is located in the HLA III region. TNF-α levels in the striatum significantly increased in haloperidol-induced TD in rats. The TNF-α gene -308A/G single nucleotide polymorphism (SNP) has been shown to directly influence TNF-α expression. The genetic association between the TNF-α gene -308A/G SNP and TD is unclear. The present study investigated whether this variation is associated with clinical phenotypes and TD in schizophrenia in a genetically homogeneous northern Chinese Han population. METHODS:We genotyped the TNF-α gene -308A/G SNP in patients with schizophrenia with TD (n=350) and without TD (n=410). The Abnormal Involuntary Movement Scale (AIMS) and Positive and Negative Syndrome Scale (PANSS) were used to assess the severity of TD and psychopathology of schizophrenia, respectively. RESULTS:The allele and genotype frequencies did not significantly differ between patients with schizophrenia with and without TD (p>0.05). No significant difference was found in the total AIMS score between the genotypes (p>0.05). However, the PANSS negative symptom subscore was associated with risk for TD (p=0.004), and a significant difference was found in total AIMS score between the genotypes in TD patients (p=0.013). CONCLUSION:The TNF-α gene -308A/G polymorphism does not appear to play a major role in the susceptibility to TD in patients with schizophrenia in a northern Chinese Han population. However this polymorphism may play a role in the TD severity.
journal_name
Prog Neuropsychopharmacol Biol Psychiatryauthors
Wang F,Fan H,Sun H,Yang F,Luo Y,Liu H,Kosten TR,Lu L,Zhang XYdoi
10.1016/j.pnpbp.2011.12.007subject
Has Abstractpub_date
2012-04-27 00:00:00pages
106-10issue
1eissn
0278-5846issn
1878-4216pii
S0278-5846(11)00372-1journal_volume
37pub_type
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