Publications by authors named "Xiacan Chen"

Objectives: To provide a longitudinal evaluation tool based on the frequency of aggressive behavior for the aggression assessment of schizophrenia patients.

Methods: The Life History of Aggression was translated and revised to form the Life History of Aggression-Chinese Version (LHA-CV) based on 369 patients diagnosed with schizophrenia in the Chengdu community and compulsory medical institution. The reliability of LHA-CV was analyzed by means of split-half reliability, test-retest reliability and inter-evaluator consistency.

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Article Synopsis
  • The study examines the link between problematic Internet use (PIU) and depression in adolescents, focusing on how social connectedness (SC) and cognitive emotion regulation (CER) mediate this relationship.
  • Conducted with over 9,400 adolescents in China, findings show 21.8% prevalence of PIU, revealing that offline SC and negative CER significantly mediate the effect of PIU on depression.
  • The results emphasize the need for enhancing real-life social interactions to mitigate depressive symptoms associated with PIU, although the applicability of the findings may vary across different cultures.
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Background: Although only a few patients with severe mental disorders (SMD) can commit violent behaviour in the community, violent behaviour aggravates the stigma towards patients with SMD. Understanding the subtypes of violent behaviour may be beneficial for preventing violent behaviour among patients with SMD, but it has rarely been studied.

Methods: This longitudinal study investigated 1914 patients with SMD in the community at baseline, and the follow-up period ranged from February 2021 to August 2021.

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Background: Few studies have explored the associated factors of attitudes of nonpsychiatric nurses towards mental disorders. Therefore, this study is aimed to evaluate the attitudes of nonpsychiatric nurses towards mental disorders and especially explore the association between psychiatric clinical practice and these attitudes.

Methods: A total of 1324 nonpsychiatric nurses and students majoring in nursing were recruited through an online questionnaire from December 2021 to March 2022 in Sichuan Province, China.

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Article Synopsis
  • Scientists found a new type of DNA marker called MiniHap that can help solve crimes by using short pieces of DNA called SNPs.
  • They used a special technology called nanopore sequencing to look at these MiniHaps in different groups of Chinese people, and found out how good they are for identifying individuals and relationships.
  • The results showed that MiniHaps are really powerful for things like paternity tests and figuring out family trees, although they weren't as good at telling apart closely related groups.
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Microhaplotype (MH), as an emerging type of forensic genetic marker in recent years, has the potential to support multiple forensic applications, especially for mixture deconvolution and biogeographic ancestry inference. Herein, we investigated the genotype data of 74 MHs included in a novel MH panel, the Ion AmpliSeq MH-74 Plex Microhaplotype Research Panel, in three Chinese Sino-Tibetan populations (Han, Tibetan, and Yi) using the Ion Torrent semiconductor sequencing. The sequencing performance, allele frequencies, effective number of alleles (A), informativeness (I), and forensic parameters were subsequently estimated and calculated.

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Monozygotic (MZ) twins are considered to be genetically identical in that they have the same genomic DNA sequences in theory, and thus cannot be differentiated using forensic standard STR-based DNA profiling. However, a recent study employed deep sequencing to explore extremely rare mutations in the nuclear genome and reported that the mutation analysis could be applied to differentiate between MZ twins. Compared with the nuclear genome, the mitochondrial DNA (mtDNA) exhibits higher mutation rates due to fewer DNA repair mechanisms in the mitochondrial genome (mtGenome) and the lack of proofreading capability of the mtDNA polymerase.

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Background: As a powerful complement to the paradigmatic DNA profiling strategy, biogeographical ancestry inference (BGAI) plays a significant part in human forensic investigation especially when a database hit or eyewitness testimony are not available. It indicates one's biogeographical profile based on known population-specific genetic variations, and thus is crucial for guiding authority investigations to find unknown individuals. Forensic biogeographical ancestry testing exploits much of the recent advances in the understanding of human genomic variation and improving of molecular biology.

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Background: To avoid public health risks, all governments ensure monitoring and treatment of mentally ill persons if they offend and assess their level of criminal responsibility. The Criminal Procedure Law of the People's Republic of China (2013) instituted special procedures. However, there are few articles in English which explain the implementation of mandatory treatment procedures in China.

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Objectives: To investigate the epidemiological characteristics of antisocial personality disorder (ASPD) in young men in Chengdu and explore the characteristics and risks of violence.

Methods: Stratified random sampling was used to conduct a self-assessment questionnaire survey in 4 108 males aged from 18 to 34 in Chengdu, including general demographic characteristics, structured clinical interview for the diagnostic and statistical manual of mental disorders-Ⅳ axis Ⅱ disorders (SCID-Ⅱ) personality disorder screen questionnaire, violence questionnaire, psychosis screening questionnaire (PSQ), Alcohol Use Disorders Identification Test (AUDIT) and drug use. test, univariate and multivariate logistic regression were used for analysis and odds ratio (OR) was calculated.

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Objective: The findings of olfaction are inconsistent in anxiety disorders, and few studies have reported on the olfactory performance in generalized anxiety disorder (GAD). Therefore, we aim to investigate the olfactory function of patients with GAD and the association between olfactory function and anxiety symptoms.

Methods: We conducted a case-control study by selecting 107 patients with GAD and 107 healthy controls matched for sex and age, to investigate olfaction deficits in GAD and the association between anxiety severity and olfaction.

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Background: Relatively few studies have compared posttraumatic stress disorder (PTSD) symptoms following a disaster among children of different ethnicities. We sought to investigate the differences in PTSD symptoms between the ethnic Hui and Han child survivors of the 2008 Wenchuan earthquake in China.

Methods: This study collected data from 1,951 Han and 247 Hui child survivors of the 2008 Wenchuan earthquake in China.

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Understanding the violence behaviors in schizophrenia patients has always been the focus of forensic psychiatry. Although many studies show gut microbiota could regulate behavior, to our knowledge, no studies have profiled the gut microbiota structure in schizophrenia patients with violence. We profiled the characteristics of gut microbiota structure in 26 schizophrenia patients with violence (V.

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Background: Many studies have related biochemical characteristics to violence and have reported schizophrenia could elevated the risk of violent behaviour. However, the metabolic characteristics of schizophrenia patients with violence (V.SC) are unclear.

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Background: A body of studies has focused on the olfactory impairment among people with schizophrenia. The effect of sex on this relationship has attracted the attention of researchers. These issues have not been studied much in Chinese schizophrenia patients.

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This study aims to investigate the role of personality traits and subjective exposure experiences in posttraumatic stress disorder and depression symptoms. In Qingchuan, 21,652 children aged 7 to 15 years were assessed using face-to-face interviews one year after the Wenchuan earthquake in China. The Junior Eysenck Personality Questionnaire, a modified earthquake exposure scale, the UCLA Posttraumatic Stress Disorder Reaction Index (adolescent), and the Adolescent Depression Inventory were used to assess personality characteristics, trauma experiences, posttraumatic stress disorder and depression symptoms, respectively.

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Background: Little is known about the characteristics of people with and without schizophrenia who have been charged with homicide in China.

Aims And Research Question: Our research question was what differences are there between alleged homicide offenders with and without psychosis?

Method: All archival records of alleged homicide cases referred for assessment to the West China Forensic Central Medical Service during 1998-2006 were retrieved. The centre serves a large catchment area in the mainly rural province of Sichuan.

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Article Synopsis
  • - The study aimed to introduce and validate the Violence Risk Scale (VRS) and its Chinese version (VRS-C) for assessing and tracking violence risk changes.
  • - Researchers translated the original VRS into Chinese and tested its reliability using 125 cases from three mental health institutions in Sichuan province, with three assessors evaluating the same 14 cases.
  • - The VRS-C showed good reliability, with strong consistency indicated by a Cronbach's alpha of 0.921 and a scorer reliability ICC of 0.80, confirming its effectiveness in assessing violence risk.
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