Chiung-Hsien Huang

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OBJECTIVE Polymorphisms of the gene encoding the regulator of G-protein signaling subtype 4 (RGS4) are associated with schizophrenia. This study aims to investigate the association of 4 RGS4 polymorphisms (single nucleotide polymorphisms [SNPs] 1, 4, 7, and 18), implicated in previous studies, with baseline symptoms and treatment response to risperidone in(More)
Previous genetic-response studies, usually without considering environmental factors, encountered great difficulties in replication of results. Although atypical antipsychotics are becoming the mainstay for schizophrenia treatment which makes an antipsychotic "atypical" remains unclear. Risperidone (a widely used atypical antipsychotic agent) and several(More)
Risperidone is an atypical antipsychotic agent with efficacy for both positive and negative symptoms of schizophrenia. Risperidone is a potent dopamine D3 antagonist and agonism at D3 sites induces behavioral suppression in rodents. We thus hypothesized that D3 antagonism may contribute to response to risperidone in negative symptoms. This study aimed to(More)
Risperidone is an atypical antipsychotic agent with efficacy for both positive and negative symptoms of schizophrenia. However, what makes an antipsychotic 'atypical' remains unclear. We recently found that the T102C polymorphism in the 5-HT2A receptor gene could affect risperidone's efficacy for negative symptoms. The present study investigated the effect(More)
Electroconvulsive therapy (ECT) is the most effective treatment in treatment-resistant depression; it may modulate intracellular processes in such patients. This study aimed to investigate the association between changes in plasma brain-derived neurotrophic factor (BDNF) levels and the clinical improvements after ECT for patients with treatment-resistant(More)
BACKGROUND The cystine/glutamate antiporter system xc(-), playing a critical role in the regulation of glutamate release, might be implicated in the pathogenesis of schizophrenia. This study examined whether peripheral expressions of the system xc(-) subunits are characteristic of schizophrenia. METHODS Expression of system xc(-) genes including SLC3A2(More)
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