| 1. |
- Andreou, Dimitrios, et al.
(författare)
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Maltreatment, the Oxytocin Receptor Gene, and Conduct Problems Among Male and Female Teenagers
- 2018
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Ingår i: Frontiers in Human Neuroscience. - : FRONTIERS MEDIA SA. - 1662-5161. ; 12
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Tidskriftsartikel (refereegranskat)abstract
- The oxytocin receptor gene (OXTR) influences human behavior. The G allele of OXTR rs53576 has been associated with both prosocial and maladaptive behaviors but few studies have taken account of environmental factors. The present study determined whether the association of childhood maltreatment with conduct problems was modified by OXTR rs53576 genotypes. In a general population sample of 1591 teenagers, conduct problems as well as maltreatment were measured by self-report. DNA was extracted from saliva samples. In males, there was a significant positive association between maltreatment and conduct problems independent of the genotype. In females, among G allele carriers, the level of conduct problems was significantly higher among those who had been maltreated as compared to those not maltreated. By contrast, among female AA carriers, conduct problems did not vary between those who were, and who were not, maltreated. The results indicate that OXTR rs53576 plays a role in antisocial behavior in females such that the G allele confers vulnerability for antisocial behavior if they experience maltreatment, whereas the A allele has a protective effect.
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| 2. |
- Condén, Emelie, 1979-, et al.
(författare)
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Is type D personality an independent risk factor for recurrent myocardial infarction or all-cause mortality in post-acute myocardial infarction patients?
- 2017
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Ingår i: European Journal of Preventive Cardiology. - : Sage Publications. - 2047-4873 .- 2047-4881. ; 24:5, s. 522-533
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Tidskriftsartikel (refereegranskat)abstract
- Background: Type D personality refers to a combination of simultaneously high levels of negative affectivity and social inhibition. The present study aimed to examine whether type D personality was independently associated with recurrent myocardial infarction or all-cause mortality in post-acute myocardial infarction patients, using any of the previously proposed methods for measuring type D personality. Design: This was a prospective cohort study. Methods: Utilising data from the Vastmanland Myocardial Infarction Study, 946 post-acute myocardial infarction patients having data on the DS14 instrument used to measure type D personality were followed-up for recurrent myocardial infarction and all-cause mortality until 9 December 2015. Data were analysed using Cox regression, adjusted for established risk factors. Results: In total, 133 (14.1%) patients suffered from type D personality. During a mean follow-up time for recurrent myocardial infarction of 5.7 (3.2) years, 166 (17.5%) patients were affected by recurrent myocardial infarction, of which 26 (15.7%) had type D personality, while during a mean follow-up time for all-cause mortality of 6.3 (2.9) years, 321 (33.9%) patients died, of which 42 (13.1%) had type D personality. After adjusting for established risk factors, type D personality was not significantly associated with recurrent myocardial infarction or all-cause mortality using any of the previously proposed methods for measuring type D personality. A weak association was found between the social inhibition part of type D personality and a decreased risk of all-cause mortality, but this association was not significant after taking missing data into account in a multiple imputation analysis. Conclusions: No support was found for type D personality being independently associated with recurrent myocardial infarction or all-cause mortality in post-acute myocardial infarction patients, using any of the previously proposed methods for measuring type D personality.
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| 3. |
- Culverhouse, R. C., et al.
(författare)
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Collaborative meta-analysis finds no evidence of a strong interaction between stress and 5-HTTLPR genotype contributing to the development of depression
- 2018
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Ingår i: Molecular Psychiatry. - : Springer Science and Business Media LLC. - 1359-4184 .- 1476-5578. ; 23:1, s. 133-142
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Tidskriftsartikel (refereegranskat)abstract
- The hypothesis that the S allele of the 5-HTTLPR serotonin transporter promoter region is associated with increased risk of depression, but only in individuals exposed to stressful situations, has generated much interest, research and controversy since first proposed in 2003. Multiple meta-analyses combining results from heterogeneous analyses have not settled the issue. To determine the magnitude of the interaction and the conditions under which it might be observed, we performed new analyses on 31 data sets containing 38 802 European ancestry subjects genotyped for 5-HTTLPR and assessed for depression and childhood maltreatment or other stressful life events, and meta-analysed the results. Analyses targeted two stressors (narrow, broad) and two depression outcomes (current, lifetime). All groups that published on this topic prior to the initiation of our study and met the assessment and sample size criteria were invited to participate. Additional groups, identified by consortium members or self-identified in response to our protocol (published prior to the start of analysis) with qualifying unpublished data, were also invited to participate. A uniform data analysis script implementing the protocol was executed by each of the consortium members. Our findings do not support the interaction hypothesis. We found no subgroups or variable definitions for which an interaction between stress and 5-HTTLPR genotype was statistically significant. In contrast, our findings for the main effects of life stressors (strong risk factor) and 5-HTTLPR genotype (no impact on risk) are strikingly consistent across our contributing studies, the original study reporting the interaction and subsequent meta-analyses. Our conclusion is that if an interaction exists in which the S allele of 5-HTTLPR increases risk of depression only in stressed individuals, then it is not broadly generalisable, but must be of modest effect size and only observable in limited situations.
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| 4. |
- Hellström, Charlotta, 1973-
(författare)
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Adolescent Gaming and Gambling in Relation to Negative Social Consequences and Health
- 2015
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The aims of the thesis were to study relationships between the effects of online gaming and gambling and negative social consequences and ill health among adolescents and to determine whether gaming and gambling activities occur together.The papers in this thesis used epidemiological methods to obtain self-report information from Swedish adolescents aged 13–18 years. Time spent in online gaming was associated with negative social consequences, and this relationship was explained by online gaming motives. Gaming for fun and social motives was associated with a reduced risk of negative social consequences, whereas gaming to escape problems, gain status, or meet demands from others was associated with an increased risk.Increased online gaming time on weekdays increased the probability of having depressive, musculoskeletal, or psychosomatic symptoms, and was related to online gaming motives. The probability of ill health was low in those who reported gaming for fun or social motives. Adolescents with symptoms of attention deficit hyperactivity disorder (ADHD) were more sensitive to gambling frequency and to developing a gambling problem. However, among those identified as susceptible, adolescents with ADHD were equally affected compared with other susceptible participants in terms of their gambling frequency.Boys had a higher probability than girls of participating in online gambling in association with online gaming. Having at least one parent born outside Scandinavia was associated with a higher probability of online gambling, especially among girls. The effect of alcohol use as a factor contributing to online gambling was greater among boys than among girls.The results of this thesis contribute new knowledge about sex differences in online gaming and gambling behaviours and add to the limited research on online gaming and online gambling behaviours among adolescent girls. Gaming motives may be helpful for identifying online gamers needing support to reduce their unhealthy gaming behaviour. Information about factors related to gaming and gambling problems may be of interest to clinicians in psychiatry, psychology and social work, as well as to policymakers, parents and teachers involved in adolescent health and development. Effect preventive strategies should consider the sex differences in gaming and gambling behaviour in adolescents.
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| 5. |
- Hellström, Charlotta, et al.
(författare)
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Effects of adolescent online gaming time and motives on depressive, musculoskeletal, and psychosomatic symptoms
- 2015
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Ingår i: Upsala Journal of Medical Sciences. - : Uppsala Medical Society. - 0300-9734 .- 2000-1967. ; 120:4, s. 263-275
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Tidskriftsartikel (refereegranskat)abstract
- Aim. To investigate whether adolescent online gaming time and the additive effect of gaming motives were associated with depressive, musculoskeletal, and psychosomatic symptoms. The hypothesis was that adolescents who engage in online gaming with escape motives and increased online gaming time have higher probability for depressive, musculoskeletal, and psychosomatic symptoms compared to adolescents with other online gaming motives and/or less online gaming time. Method. An anonymous and voluntary questionnaire was completed during class hours by 7,757 Swedish adolescents aged 13-18 years. The questionnaire included demographic background, gaming habits, and depressive, musculoskeletal, and psychosomatic symptoms. Results. It was found that increased online gaming time during weekdays increased the probability of having depressive, musculoskeletal, and psychosomatic symptoms. However, these relations with time spent gaming were further explained by online gaming motives. Weekday online gaming for more than five hours a day, in combination with escape motives, was associated with an increased probability of depressive symptoms (odds ratio (OR) 4.614, 95% CI 3.230-6.590), musculoskeletal symptoms (OR 2.494, 95% CI 1.598-3.892), and psychosomatic symptoms (OR 4.437, 95% CI 2.966-6.637). The probability of ill health decreased when gaming was for fun or had social motives. Conclusion. Excessive gaming time and escape motives were found to be associated with increased probability of ill health among adolescents. Gaming motives may identify gamers in need of support to reduce unhealthy gaming behaviour as well as identify individuals at risk for ill health.
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| 6. |
- Isaksson, Johan, et al.
(författare)
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Associations between the FKBP5 haplotype, exposure to violence and anxiety in females
- 2016
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Ingår i: Psychoneuroendocrinology. - Oxford, United Kingdom : Elsevier. - 0306-4530 .- 1873-3360. ; 72, s. 196-204
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Tidskriftsartikel (refereegranskat)abstract
- The gene that encodes the FK506-binding protein 5 (FKBP5) is regarded as a candidate for investigating how negative life events interact with a genetic predisposition to stress-related disorders, such as depression and anxiety. Given the role of FKBP5 as an important regulator of stress responses, we aimed to investigate if single-nucleotide polymorphisms (SNPs) in FKBP5-in the presence/absence of exposure to violence-are associated with symptoms of depression and anxiety. Data from two community-based samples of adolescents (n=1705) and young adults (n=1800) regarding ratings on depression, anxiety, exposure to violence and FKBP5 genotype were collected. A risk haplogenotype including the minor alleles of seven common SNPs in the FKBP5 (rs3800373, rs9296158, rs7748266, rs1360780, rs9394309, rs9470080 and rs4713916) conferred higher ratings on anxiety among females, but not males, in the presence of violence. Exposure to violence and female sex were associated with higher ratings on both depression and anxiety, with the exception of ratings on depression among young adults, on which sex had no effect. Ratings on depression were not associated with the haplogenotype. These findings may correspond to differences in the regulation of the HPA axis and with the higher vulnerability to anxiety in females.
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| 7. |
- Kerstis, Birgitta, 1963-, et al.
(författare)
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More secure attachment to the father and the mother is associated with fewer depressive symptoms in adolescents
- 2018
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Ingår i: Upsala Journal of Medical Sciences. - : TAYLOR & FRANCIS LTD. - 0300-9734 .- 2000-1967. ; 123:1, s. 62-67
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To investigate whether more secure attachment to the father and the mother is associated with less depressive symptoms among adolescents, and to explore possible sex differences.Method: A population-based sample of adolescents completed a school-based survey assessing demographic data, attachment to father and mother, as well as depressive symptoms. Participation rate was 80% of the eligible population, and 3,988 adolescents (1,937 boys and 2,051 girls) had complete data for the analyses.Results: Paired samples t tests showed that participants rated their attachment to mothers as slightly more secure than their attachment to fathers (t = 15.94, P < 0.001; boys: t = 5.23, P < 0.001; girls: t = 16.16, P < 0.001). In linear regression analyses there was an association between the outcome, number of depressive symptoms, and more secure attachment to the mother for boys (B=-0.532; 95% confidence interval [CI] -0.656, -0.407, P < 0.001) and for girls (B = -0.623; 95% CI -0.730, -0.516, P < 0.001). Analogous results were found for more secure attachment to the father for boys (B = -0.499; 95% CI -0.608, -0.391, P < 0.001) and for girls (B = -0.494; 95% CI -0.586, -0.401, P < 0.001).Conclusions: Understanding the relationship between attachment to both father and mother and depressive symptoms in adolescent boys and girls is essential for further development of strategies for prevention and treatment of depression.
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| 8. |
- Larm, Peter, et al.
(författare)
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Adolescent non-drinkers : Who are they? Social relations, school performance, lifestyle factors and health behaviours
- 2018
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Ingår i: Drug and Alcohol Review. - : WILEY. - 0959-5236 .- 1465-3362. ; 37:S1, s. S67-S75
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Tidskriftsartikel (refereegranskat)abstract
- Introduction and AimsTraditionally, non-drinking adults or young adults have been associated with health deficits rather than health benefits. However, as the proportion of Swedish non-drinking adolescents has doubled since 2000, their health profiles are of interest. The aim of the present study is to examine whether social relations, school characteristics, lifestyle factors or health behaviours distinguish adolescent non-drinkers from adolescent drinkers, and if their health profiles have changed from 2004 to 2012.Design and MethodsData from the Survey of Adolescent Life in Vestmanland, a health survey biennially distributed to all 9th graders (15-16years) in a medium-sized Swedish county, was used. In total, 2872 students in 2004 and 2045 students in 2012 were included.ResultsNon-drinkers were distinguished from drinkers in both 2004 and 2012 by elevated parental supervision, a lower rate of school truancy and lower rates of cannabis use, use of other illicit drugs, daily smoking and lower scores on antisocial behaviour, but more problems of getting new friends. No differences between 2004 and 2012 were found.Discussion and ConclusionsNon-drinkers presented more adaptive and healthier behaviours than their drinking peers, but it is difficult to determine whether their health benefits were related to their improved alcohol status or to the more general trend towards adaptation that occurred from 2004 to 2012 among adolescents.
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| 9. |
- Larm, Peter, et al.
(författare)
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How are social capital and sense of coherence associated with hazardous alcohol use? : Findings from a large population-based Swedish sample of adults
- 2016
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Ingår i: Scandinavian Journal of Public Health. - : SAGE Publications. - 1403-4948 .- 1651-1905. ; 44:5, s. 525-533
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Tidskriftsartikel (refereegranskat)abstract
- Aims: This study examined whether social capital and a sense of coherence are associated with hazardous alcohol use in a large population-based Swedish sample. In particular, the objectives were (a) to examine which of five subdimensions of social capital is associated with hazardous alcohol use, (b) to investigate the moderating role of sense of coherence and (c) to examine possible sex differences. Methods: A postal survey was distributed to a sample of respondents (aged 18-84 years) from five Swedish counties that was stratified by sex, age and city; 40,674 (59.2%) participants responded, of which 45.5% were men and 54.5% were women with a mean +/- SD age of 53.8 +/- 17.9 years. Results: Structural dimensions of social capital were associated with an increased probability of hazardous alcohol use among both men and women, whereas the increased probability associated with cognitive dimensions occurred mostly among women. Sense of coherence was robustly associated with a decreased probability of hazardous alcohol use among both men and women. There were few moderating effects of sense of coherence and sex differences emerged mainly for the cognitive dimension of social capital. Conclusions: Associations between social capital dimensions and hazardous alcohol use were partly sex-specific, whereas the benefits of a sense of coherence accrued to both sexes. Social capital dimensions and sense of coherence were generally unrelated to each other. Only associations between the cognitive dimensions of social capital and hazardous alcohol use differed by sex.
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| 10. |
- Larm, Peter, et al.
(författare)
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The increased trend of non-drinking alcohol among adolescents : what role do internet activities have?
- 2019
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Ingår i: European Journal of Public Health. - : Oxford University Press (OUP). - 1101-1262 .- 1464-360X. ; 29:1, s. 27-32
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Tidskriftsartikel (refereegranskat)abstract
- Background: Recently, an increased trend toward non-drinking among adolescents has been observed in several countries. The aim of the present study is to evaluate a common suggestion in literature, that adolescents do not drink alcohol because they spend more time on the internet, monitored at home, by examining associations between internet activities (social media/chatting and computer gaming) and non-drinking.Methods: A health questionnaire was distributed to all 9th graders (1516 years) in a mid-sized Swedish county in 2008, 2010 and 2012. In total, 7089 students returned the questionnaire.Results: In contrast to the suggestion, no association was found between total time spent on computers and non-drinking. Social media/chatting was robustly associated with a decreased probability of non-drinking across the three survey years. On the other hand, computer gaming during weekends only (OR = 1.74, CI = 1.132.69) or both on weekdays and weekends increased the probability of non-drinking (OR = 1.82, CI = 1.312.54) in 2012 only. However, neither social media/chatting nor computer gaming was associated with the increased trend of non-drinking from 2008 to 2012.Conclusions: Internet activities were in general not associated with non-drinking among adolescents aged 1516 years in Sweden. Although, a weak positive association between computer gaming and non-drinking was found in 2012, this effect benefited the vast majority of the boys. The larger alcohol use among those with extensive social media use/chatting may indicate that these online platforms are arenas where adolescents are exposed for positive alcohol preferences and alcohol advertising without parental supervision.
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