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Sökning: WFRF:(Koposov Roman) > Isaksson Johan

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2.
  • Isaksson, Johan, et al. (författare)
  • Community Violence Exposure and Eating Disorder Symptoms among Belgian, Russian and US Adolescents : Cross-Country and Gender Perspectives.
  • 2023
  • Ingår i: Child Psychiatry and Human Development. - : Springer. - 0009-398X .- 1573-3327.
  • Tidskriftsartikel (refereegranskat)abstract
    • Community violence exposure (CVE) is one of the most common adverse childhood experiences worldwide. Despite this, its potential effect on disordered eating in adolescents from different cultures is underexplored. In the present cross-sectional study, self-reported data were collected from 9751 students (Mean age = 14.27) from Belgium, Russia and the US on CVE (witnessing violence and violence victimization), eating disorder (ED) symptoms (ED thoughts with associated compensatory behaviors), and comorbid symptoms of posttraumatic stress, depression and anxiety. Increased CVE (from no exposure to witnessing to victimization) was associated with more ED symptoms, and the associations remained significant after adjusting for comorbid conditions. The associations were similar for adolescents across the three countries. No gender differences were observed in the association between CVE and ED symptoms, even though girls in general reported more ED symptoms than boys. We conclude that CVE appears to be associated with ED symptoms in three culturally different samples of adolescents.
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3.
  • Isaksson, Johan, et al. (författare)
  • Exploring possible association between D beta H genotype (C1021T), early onset of conduct disorder and psychopathic traits in juvenile delinquents
  • 2016
  • Ingår i: European Archives of Psychiatry and Clinical Neuroscience. - : Springer Science and Business Media LLC. - 0940-1334 .- 1433-8491. ; 266:8, s. 771-773
  • Tidskriftsartikel (refereegranskat)abstract
    • Early onset of conduct disorder (CD) with callous-unemotional traits has been linked to low levels of dopamine β-hydroxylase (DβH), an enzyme involved in dopamine turnover. The C1021T polymorphism in the DβH gene is a major quantitative-trait locus, regulating the level of DβH. In this study of juvenile delinquents from Northern Russia (n = 180), the polymorphism at -1021 was associated neither with early-onset CD nor with psychopathic traits. Association was found between psychopathic traits and early-onset CD, ADHD and mania.
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4.
  • Isaksson, Johan, et al. (författare)
  • Exploring possible association between DβH genotype (C1021T), early onset of conduct disorder and psychopathic traits in juvenile delinquents.
  • 2016
  • Ingår i: European Archives of Psychiatry and Clinical Neuroscience. - : Springer Science and Business Media LLC. - 0940-1334 .- 1433-8491. ; 266:8, s. 771-773
  • Tidskriftsartikel (refereegranskat)abstract
    • Early onset of conduct disorder (CD) with callous-unemotional traits has been linked to low levels of dopamine β-hydroxylase (DβH), an enzyme involved in dopamine turnover. The C1021T polymorphism in the DβH gene is a major quantitative-trait locus, regulating the level of DβH. In this study of juvenile delinquents from Northern Russia (n = 180), the polymorphism at -1021 was associated neither with early-onset CD nor with psychopathic traits. Association was found between psychopathic traits and early-onset CD, ADHD and mania.
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5.
  • Isaksson, Johan, et al. (författare)
  • The Role of Gender in the Associations Among Posttraumatic Stress Symptoms, Anger, and Aggression in Russian Adolescents
  • 2020
  • Ingår i: Journal of Traumatic Stress. - : John Wiley & Sons. - 0894-9867 .- 1573-6598. ; 33:4, s. 552-563
  • Tidskriftsartikel (refereegranskat)abstract
    • Symptoms of posttraumatic stress disorder (PTSD) have been linked to anger and aggressive behavior in adult and veteran populations. However, research on the associations among anger, aggression, and PTSD in adolescents is lacking, particularly regarding differences between the sexes. To address this research gap, we used self-report data from Russian adolescents (N = 2,810; age range: 13-17 years) to perform a full path analysis examining the associations between PTSD symptoms and the emotional (anger traits) and cognitive (rumination) components of anger as well as physical/verbal and social aggression, after adjusting for depressive symptoms. We also examined the interaction effects between PTSD symptoms and sex on anger and aggression. The results indicated that girls scored higher on measures of anger and PTSD symptoms, ds = 0.20-0.32, whereas boys scored higher on measures of physical and verbal aggression, d = 0.54. Clinical levels of PTSD symptoms were associated with anger rumination, β = .16, and trait anger, β = .06, and an interaction effect for PTSD symptoms and sex was found for aggression, whereby boys with clinical levels of PTSD symptoms reported more physical/verbal and social aggression, βs = .05 and .20, respectively. Our findings suggest that PTSD symptoms may have an important impact on anger, anger rumination, and aggression during adolescence. In particular, boys seem to have an increased risk for aggressive behavior in the presence of PTSD symptoms. The present results highlight the importance of taking anger and aggression into account when evaluating PTSD.
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6.
  • Koposov, Roman A., et al. (författare)
  • Enuresis in young offenders : a study on prevalence and mental health comorbidity
  • 2024
  • Ingår i: Frontiers in Psychiatry. - : Frontiers Media S.A.. - 1664-0640. ; 15
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Enuresis is a common disorder in the school-age period, and is often associated with a variety of behavioral, psychological, and social problems. While early studies suggested an association between enuresis and delinquent behavior, there has been no recent research assessing the prevalence of enuresis and its comorbid psychopathology in young offenders. The aim of this study was to therefore assess the prevalence of enuresis and its associated psychiatric comorbidity in incarcerated young offenders.Methods: The prevalence of past and current enuresis and comorbid psychopathology was assessed using a semi-structured psychiatric interview and self-reports from 366 incarcerated male young offenders [age 14 to 19 years (mean age = 16.4)] from Northern Russia.Results: Seventy-three (20.0%) adolescents reported a previous history of enuresis, and in addition almost 10% of the youth reported current enuresis symptoms. Delinquent youth with enuresis did not significantly differ from other youth in the prevalence of comorbid psychiatric diagnoses when assessed by a clinical diagnostic interview, but had significantly higher levels of self-reported mental health problems, and suicidal ideation and attempts.Conclusion: Problems with enuresis are common among delinquent youth and may be associated with increased mental health problems. Given the potentially increased risk for suicidal thoughts and behavior in young offenders with enuresis, comprehensive mental health screening of those who are detected with this condition should be considered in the juvenile justice system.
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7.
  • Koposov, Roman, et al. (författare)
  • Community Violence Exposure and School Functioning in Youth : Cross-Country and Gender Perspectives
  • 2021
  • Ingår i: Frontiers in Public Health. - : Frontiers Media S.A.. - 2296-2565. ; 9
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Many children and adolescents experience violent events which can be associated with negative consequences for their development, mental health, school, and social functioning. However, findings between settings and on the role of gender have been inconsistent. This study aimed to investigate cross-country and gender differences in the relationship between community violence exposure (CVE) and school functioning in a sample of youths from three countries. Methods: A self-report survey was conducted among school students (12-17 years old) in Belgium (Antwerp, N = 4,743), Russia (Arkhangelsk, N = 2,823), and the US (New Haven, N = 4,101). Students were recruited from within classes that were randomly selected from within schools that had themselves been randomly selected (excepting New Haven, where all students were included). CVE was assessed with the Screening Survey of Exposure to Community Violence. School functioning was assessed with four measures: the Perceived Teacher Support scale, Negative Classroom Environment scale, and Academic Motivation and Perception of Safety at School scales. Multivariate Analyses of Covariance were performed to assess differences in the levels of school-related problem behaviors in boys and girls, who reported different degrees of CVE. Results: Participants in all three countries reported a relatively high prevalence of violence exposure (36.2% in Belgium, 39.3% in Russia and 45.2% in the US who witnessed violence), with a higher proportion of girls than boys witnessing violent events (varied from 37.4 to 51.6% between the countries), whereas boys reported more episodes of victimization by violence than girls (varied from 32.3 to 49.9% between the countries). Youths who experienced increased CVE (from no exposure to witnessing to victimization) reported an increase in all school functioning problems in all of the countries and this association was not gender-specific. Conclusions: Our findings suggest that regardless of differences in the level of CVE by country and gender, violence exposure is negatively associated with school functioning across countries. Nonetheless, even though reactions to community violence among adolescents may be expressed in a similar fashion, cross-country differences in social support systems should also be taken into account in order to provide culturally sensitive treatment modalities.
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8.
  • Lindblad, Frank, et al. (författare)
  • Comorbidity and Behavior Characteristics of Russian Male Juvenile Delinquents With ADHD and Conduct Disorder
  • 2020
  • Ingår i: Journal of Attention Disorders. - : SAGE Publications. - 1087-0547 .- 1557-1246. ; 24:7, s. 1070-1077
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: To test the previously suggested hypothesis that those with comorbid ADHD and Conduct Disorder (CD) diagnoses differ from other antisocially involved youth in terms of higher rates of violent behavior, impulsiveness, and psychopathic traits.METHOD: Three hundred eighty juvenile incarcerated delinquents from Northern Russia were assessed by means of semi-structured psychiatric interview and by student and teacher self-reports.RESULTS: The study has demonstrated higher rates of psychiatric disorders and of comorbidity, as well as more complicated substance abuse and disruptive behaviors in those with combined ADHD-CD diagnosis, as compared with CD only, ADHD only, and no CD no ADHD groups. The results regarding psychopathic traits were inconclusive.CONCLUSION: The group with combined ADHD-CD diagnosis is more severely disturbed, both as concerns psychiatric comorbidity and more severe aggressive and disruptive behaviors. However, there is only limited evidence supporting a higher prevalence of psychopathic traits in this group.
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9.
  • Ruchkin, Vladislav, 1969-, et al. (författare)
  • Depressive symptoms and anger and aggression in Russian adolescents
  • 2023
  • Ingår i: Child and Adolescent Psychiatry and Mental Health. - : BioMed Central (BMC). - 1753-2000. ; 17:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Research among adolescents exploring the association between depressive symptoms and aggression has produced inconsistent findings. This study investigated the prevalence of clinically significant (current major depressive episode) and subthreshold depressive symptoms in a general population sample of adolescents from Northern Russia and explored their association with aggression and anger, while controlling for comorbid mental health problems. The sample consisted of 2600 participants, aged 13-17 years (59.5% female; 95.7% ethnic Russian). Symptoms of a current major depressive episode, types of anger and aggression (anger rumination, trait anger, physical, verbal and social aggression) and comorbid problems (posttraumatic stress, alcohol use, anxiety, and hyperactivity/impulsivity) were assessed by means of self-reports. The prevalence of a clinically significant depressive episode in the past month was 3.5%, while for subthreshold depression it was 21.6%. All anger and aggression variables, as well as comorbid problems increased together with increasing levels of depression. The association between overt aggressive behavior and depression was primarily explained by comorbid mental health problems, whereas anger rumination and social aggression had more direct associations with depression, independent of comorbidity. Among adolescents with depression, boys reported higher levels of social and verbal aggression and of anger rumination than girls. The results of this study suggest that interventions aiming to reduce aggressive behavior in adolescents should consider depression and its comorbid conditions.
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10.
  • Stickley, Andrew, et al. (författare)
  • Attention-deficit/hyperactivity disorder symptoms, perceived stress, and suicidal ideation during the COVID-19 pandemic
  • 2022
  • Ingår i: Frontiers in Psychiatry. - : Frontiers Media S.A.. - 1664-0640. ; 13
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: Attention-deficit/hyperactivity disorder (ADHD) symptoms have been linked to suicidal behavior. However, little is known about the mechanisms involved in this association. This study examined ADHD symptoms and suicidal ideation during the COVID-19 pandemic and the role of self-perceived stress in this association.METHOD: Data were analyzed from an online sample of 1,452 Japanese individuals aged 18 to 89 obtained in February 2021. Information was collected on past-year suicidal ideation. ADHD symptoms were assessed with the Adult ADHD Self-Report Scale (ASRS) Screener while stress was measured with the Perceived Stress Scale (PSS-14). Depressive symptoms were assessed with the Patient Health Questionnaire (PHQ-9), while the Generalized Anxiety Disorder scale (GAD-7) was used to assess anxiety symptoms. Logistic regression was used to examine associations.RESULTS: Fifty-one (3.5%) individuals had ADHD symptoms, while more than one in ten (11.7%) of the respondents reported past-year suicidal ideation. In an analysis adjusted for sociodemographic factors, ADHD symptoms were associated with eight times higher odds for past-year suicidal ideation. However, adjusting the analysis for mental health variables (anxiety and depressive symptoms) attenuated the association which became non-significant (odds ratio [OR]: 1.96, 95% confidence interval [CI]: 0.92-4.18). In contrast, in an analysis adjusted for mental health, individuals with ADHD symptoms and stress had significantly higher odds for suicidal ideation (OR: 3.72, 95%CI: 1.43-9.67) whereas, ADHD symptoms without stress were not linked to suicidal ideation (OR: 1.25, 95%CI: 0.38-4.18).CONCLUSIONS: Self-perceived stress is important in the association between ADHD symptoms and suicidal ideation among individuals in Japan during the COVID-19 pandemic. Detecting and managing stress and its effects in individuals with ADHD/ADHD symptoms should be a therapeutic focus for improving health-related outcomes in this population both during the COVID-19 pandemic and beyond.
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