Po-Chang Hsiao

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Since brain tissue is not readily accessible, a new focus in search of biomarkers for schizophrenia is blood-based expression profiling of non-protein coding genes such as microRNAs (miRNAs), which regulate gene expression by inhibiting the translation of messenger RNAs. This study aimed to identify potential miRNA signature for schizophrenia by comparing(More)
OBJECTIVES The effect of TCF7L2 rs7903146 on glucose homeostasis is considered primarily due to impaired insulin secretion in European populations. Because we previously demonstrated that TCF7L2 rs290487 near the 3' end of TCF7L2 was significantly associated with type 2 diabetes (T2D) in Taiwanese subjects, we aimed to investigate potential mechanisms(More)
Despite the consistent presence of performance deficits on the Wisconsin Card Sorting Test (WCST) in schizophrenia patients, whether poorer performance is also present in their nonpsychotic relatives is not certain. This study aimed to estimate both the recurrence risk ratio (λs) and the heritability of WCST scores in simplex and multiplex families,(More)
Inconsistent results of the molecular studies for handedness have been reported. One of the key issues involved could be ways of assessing handedness. The current study aimed to identify the index of handedness better reveal the genetic component, which showed higher heritability. We measured handedness using the Annett's handedness questionnaire. The(More)
Positive schizotypy is associated with non-right-handedness, which includes left- and mixed-handedness. However, because the underlying mechanisms might be different, it is important to examine whether both left- and mixed-handedness are associated with a high incidence of schizotypy. During 2009-2010, we used both the Perceptual Aberration Scale and(More)
This study aimed to examine the multidimensionality of schizotypy and validate the structure using ordered subset linkage analyses on information from both relatives' schizotypy and probands' schizophrenia symptoms. A total of 203 and 1,310 nonpsychotic first-degree relatives from simplex and multiplex schizophrenia families, respectively, were interviewed(More)
BACKGROUND As schizophrenia is genetically and phenotypically heterogeneous, targeting genetically informative phenotypes may help identify greater linkage signals. The aim of the study is to evaluate the genetic linkage evidence for schizophrenia in subsets of families with earlier age at onset or greater neurocognitive deficits. METHODS Patients with(More)
  • Shi-Heng Wang, Po-Chang Hsiao, +5 authors Wei J Chen
  • Preventive medicine
  • 2011
OBJECTIVE This study examines the relationship between the availability of public facilities for habitual physical activity in the community and metabolic syndrome in northern Taiwan, one of most densely populated countries in the world. METHODS Subjects consisted of 14,658 participants (43.3% men and 56.7% women) ≥40 years old (mean=59.5) from 10(More)
An earlier age at onset (AAO) has been associated with greater genetic loadings in schizophrenia. This study aimed to identify modifier loci associated with an earlier AAO of schizophrenia. A genome-wide association analysis (GWAS) was conducted in 94 schizophrenia probands with the earliest AAO and 91 with the latest AAO. Candidate single nucleotide(More)
BACKGROUND This study examined variation between users of 'club' and 'hard' drugs in Taiwan in terms of prevalence of use and demographics and psychosocial characteristics. METHODS Data were derived from a survey of 17,837 Taiwanese civilians, aged 12-64 years, using stratified, multi-stage, random sampling. Participants completed a computer-assisted(More)