What Drives Animal Fluency Performance in Cantonese-Speaking Chinese Patients with Adult-Onset Psychosis?

Among the numerous studies investigating semantic factors associated with functioning in psychotic patients, most have been conducted on western populations. By contrast, the current cross-sectional study involved native Cantonese-speaking Chinese participants. Using the category fluency task, we compared performance between patients and healthy participants and examined clinical and sociodemographic correlates. First-episode psychosis patients (n = 356) and gender- and age-matched healthy participants (n = 35) were asked to generate as many ‘animals’ as they could in a minute. As expected, patients generated fewer correct responses (an average of 15.5 vs. 22.9 words), generated fewer clusters (an average of 3.7 vs. 5.4 thematically grouped nouns), switched less between clusters (on average 8.0 vs. 11.9 switches) and, interestingly, produced a larger percentage of Chinese zodiac animals than healthy participants (an average of 37.7 vs. 24.2). However, these significant group differences in the clusters and switches disappeared when the overall word production was controlled for. Within patients, education was the strongest predictor of category fluency performance (namely the number of correct responses, clusters, and switches). The findings suggest that an overall slowness in patients may account for the group differences in category fluency performance rather than any specific abnormality per se

Early intervention for incipient insanity: early notions from the 19th century English literature.

AIM: Early intervention programmes in mental illnesses started to bloom in the 1990s, and many programmes have been established worldwide during the past twenty years. However, the concept of early intervention has emerged during the 19th century but it did not make much impact on practice. The aim of this review is to identify the difficulties appeared during that period of time which could provide insight into the modern development of early intervention initiatives. METHODS: A narrative review which focused on English literature about early intervention for insanity during the 19th century was undertaken. RESULTS: Clinicians during the 19th century recognized that treatment would be the most effective at the early stage of the mental illness and they had emphasized the importance of early intervention. However, because of a number of factors, such as the limited roles of asylums, lack of knowledge about mental disorder and the lack of effective treatment, the idea of early intervention did not make impact in clinical service during that period of time. CONCLUSION: During the past two hundred years, understanding towards mental illness has advanced and more effective treatments, such as the use of anti-psychotic medications, have been developed. Reflecting on the past experience and difficulties might shed light on the development of today early intervention in mental disorder.This is the author accepted manuscript. It is currently under an indefinite embargo pending publication by Wiley

New genetic loci link adipose and insulin biology to body fat distribution.

Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. To increase our understanding of the genetic basis of body fat distribution and its molecular links to cardiometabolic traits, here we conduct genome-wide association meta-analyses of traits related to waist and hip circumferences in up to 224,459 individuals. We identify 49 loci (33 new) associated with waist-to-hip ratio adjusted for body mass index (BMI), and an additional 19 loci newly associated with related waist and hip circumference measures (P < 5 × 10(-8)). In total, 20 of the 49 waist-to-hip ratio adjusted for BMI loci show significant sexual dimorphism, 19 of which display a stronger effect in women. The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms

Predictors of relapse in first-episode schizophrenia and related psychosis

published_or_final_versionPsychiatryDoctoralDoctor of Philosoph

Antipsychotic treatment of young Chinese individuals from 2004 to 2015: A population based study in Hong Kong

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Rate and risk factors of depressive symptoms in Chinese patients presenting with first-episode non-affective psychosis in Hong Kong

© 2015 Elsevier B.V.Background: Depressive symptoms are a distinct symptom dimension in psychotic disorders and are associated with elevated suicide risk, and poorer clinical and functional outcomes. Previous research on depressive symptoms mainly focused on chronic patients and few studies were conducted to investigate factors associated with depression in the early illness course. We aimed to examine the prevalence and risk factors of depressive symptoms, and their impacts on functioning, subjective quality of life (QoL) and self-efficacy in first-episode non-affective psychosis. Method: Three hundred fifty-one Hong Kong Chinese aged 26-55. years presenting with first-episode non-affective psychosis to early intervention service were recruited. Assessments encompassing sociodemographics, premorbid adjustment, clinical and treatment profiles, functioning, QoL and perceived self-efficacy were conducted. Patients who had Calgary Depression Scale for Schizophrenia (CDSS) total score ≥. 6 were classified as having depressive symptoms. Results: Fifty-three (15.1%) patients exhibited depressive symptoms at entry. Depressed patients had worse functioning, poorer QoL and lower level of self-efficacy than non-depressed counterparts. Multivariate regression analysis showed that previous exposure to stressful life events, unemployment, being married, more severe positive symptoms, higher level of antipsychotic-induced Parkinsonism and negative attitude towards medication treatment were independently associated with depression status. Conclusions: Depressive symptoms were frequently observed in adult patients with first-episode nonaffective psychosis, and were linked to poor functioning and QoL. Our findings indicated that, aside from social and clinical risk factors, presence of drug-induced Parkinsonism and negative treatment attitude may render patients more vulnerable to developing depression in the early stage of psychotic illness.Link_to_subscribed_fulltex

Public stigma in China associated with schizophrenia, depression, attenuated psychosis syndrome, and psychosis-like experiences

Objective: Attenuated psychosis syndrome (APS) has recently been included in the appendix of DSM-5 as a condition for further study. This study compared public stigma associated with four mental health conditions among study participants in Hong Kong. Methods: The cross-sectional study involved 204 participants (154 members of the general public general public and 50 health care professionals) recruited through a public awareness campaign and the e-mail network of the University of Hong Kong. Participants read four vignettes describing persons with schizophrenia, depression, APS, or psychosis-like experiences. For each vignette, they used a scale to rate their level of stigma in seven domains: social distance, traditional prejudice, exclusionary sentiments, negativeaffect, perceptions of dangerousness, treatment carryover, and disclosure carryover. Analyses compared ratings within and across vignettes. Results: Schizophrenia received the highest public stigma ratings, followed by APS, depression, and psychosis-like experiences. Total stigma scores were higher for the general public than for health care professionals. Public stigma associated with APS was similar to that associated with depression. Ratings of treatment carryover indicated that participants believed that being known to have received treatment for APS or depression would have lasting consequences. Conclusions: Stigma should be considered in the development of mental health services and research in China, particularly in regard to people with schizophrenia and those at risk of psychosis.Link_to_subscribed_fulltex