Sirvi Märksõna "aggressiveness" järgi

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Agressiivse käitumise ja HTR1B genotüübi seos ELIKTU nooremal kohordil
(Tartu Ülikool, 2016) Jürjo, Merilin; Kiive, Evelyn, juhendaja; Tartu Ülikool. Sotsiaalteaduste valdkond; Tartu Ülikool. Psühholoogia instituut
Antud uurimistöö eesmärk on välja selgitada ühe ELIKTU lastel genotüpiseeritud serotonergilist närviülekannet reguleeriva geenivariandi HTR1B rs6296 (serotoniini 1B retseptorit kodeeriva geeni polümorfism) seost ja võimalikku keskkonnakoosmõju agressiivse käitumise kujunemisele. Uurimus on osa suuremast longituuduuringust ELIKTU, mille eesmärgiks on selgitada tervistmõjustava käitumise põhjuslikke tegureid ja tervise kujunemist (ELIKTU, 2015). Valimisse kuulus 583 inimest, kelle õpetajatel paluti täita nende kohta agressiivsuse küsimustik ning katseisikutel endal enesekohane agressiivsuse küsimustik. Samuti uuriti nende negatiivseid elusündmusi, mis on antud uurimuses keskkonna indikaatoriks. Tulemustest selgus, et HTR1B-l ei ilmnenud seost agressiivsusega ning agressiivset käitumist ei mõjutanud ka HTR1B ja negatiivsete elusündmuste koosmõju. Samal ajal leiti, et agressiivust mõjutasid oluliselt negatiivsed elusündmused üksinda. Uurimistöö tulemused on olulised agressiivse käitumise mõistmisel ning selle mehhanismide kaardistamisel.
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Association of orexin/hypocretin receptor gene (HCRTR1) with reward sensitivity, and interaction with gender
(Elsevier, 2020) Pulver, Aleksander; Kiive, Evelyn; Harro, Jaanus; Kanarik, Margus
Orexins/hypocretins maintain wakefulness, increase appetite and participate in the coordination of stress response. We have recently provided evidence on the role of orexins in aggression, showing the association of the HCRTR1 genotype. (rs2271933 G > A; leading to amino acid substitution Ile408Val) with aggressiveness or breach of law in four independent cohorts. Aggressive behaviour can be reward driven and hence we have examined the association of HCRTR1 rs2271933 genotype with different aspects of reward sensitivity in the birth cohort representative Estonian Children Personality Behaviour and Health Study. HCRTR1 genotype was associated with reward sensitivity in a gender dependent manner. Male HCRTR1 A/A homozygotes had higher Openness to Rewards and the overall reward sensitivity score while, in contrast, female A/A homozygotes scored lower than G-allele carriers in Openness to Rewards. In the total sample, aggressiveness correlated positively with reward sensitivity, but this was on account of Insatiability by Reward. In contrast, the HCRTR1 A/A homozygotes had a positive association of aggressiveness and Openness to Rewards. Experience of stressful life events had a small but significant increasing effect on both aspects of reward sensitivity, and correlated in an anomalous way with reward sensitivity in the HCRTR1 A/A homozygotes. Conclusively, the higher aggressiveness of HCRTR1 A/A homozygotes appears based on a qualitative difference in sensitivity to rewards, in the form that suggests their lower ability to prevent responses to challenges being converted into overt aggression.
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Geeni FKBP5 C/T polümorfismi ning stressikogemuste seosed aktiivsus- ja tähelepanuhäire sümptomitega ja agressiivsusega 9-, 15- ja 18 aastaselt
(Tartu Ülikool, 2016) Reinart, Liina; Laas, Kariina, juhendaja; Tartu Ülikool. Sotsiaalteaduste valdkond; Tartu Ülikool. Psühholoogia instituut
Aktiivsus- ja tähelepanuhäire (ATH) sümptomaatika ja agressiivsuse geneetiliste ning keskkondlike aluste paremaks mõistmiseks on käesolevas töös uuritud ATH sümptomite ja agressiivsuse seoseid geeni FKBP5 C/T polümorfismi (rs1360780) ja stressikogemustega. Kasutatud on Eesti laste isiksuse ja käitumise longituuduuringu noorema kohordi andmeid vanustes 9 (n=583), 15 (n=483) ja 18 (n=457) eluaastat. ATH sümptomid on mõõdetud af Klintebergi skaalal ning stressikogemused enesekohaste raportitega. Tulemustest selgus, et koolikiusamise all kannatanud T-alleeliga 9-aastastel tüdrukutel ilmnes rohkem ATH sümptomeid, eelkõige keskendumisraskusi, võrreldes mitte-kiusatud ja CC genotüübiga tüdrukutega. Hilisemas vanuses eelmainitud seos enam ei ilmnenud. Poistel ei ilmnenud sarnast seost üheski uuritud vanuseastmetes. Tulemustest järeldub, et FKBP5 C/T polümorfismi seos ATH sümptomitega sõltub stressitasemest, soost ja vanusest.
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Risk-taking in traffic is associated with unhealthy lifestyle: Contribution of aggressiveness and the serotonin transporter genotype
(2022) Tokko, Tõnis; Eensoo, Diva; Luht-Kallas, Kadi; Harro, Jaanus
Objectives: Risk taking behaviour, including in traffic, is related to impulsivity and aggressiveness, and so is unhealthy lifestyle. The serotonin transporter gene promoter polymorphism (5-HTTLPR) has been associated with impulsivity, aggression, alcohol use, speed limit exceeding and traffic accidents. The aim of this study was to examine whether subjects with less healthy eating and exercise habits take more risks in traffic, and whether impulsivity, aggressiveness and the serotonin transporter genotype could mediate or moderate any such associations. Method: A sub-sample of the Estonian Psychobiological Study of Traffic Behaviour (EPSTB (n = 817) with mean age (SD) = 31.4 (10.0) years filled out lifestyle questionnaires. Impulsivity was measured by Adaptive and Maladaptive Impulsivity Scale and aggressiveness by Buss – Perry Aggression Questionnaire. Traffic violation data in the previous 5 years period were obtained from police database. Results: Speed limit exceeders had higher physical and verbal aggression, higher AUDIT scores, they reported more vigorous physical activity and drinking energy drinks more often. Path analysis showed that higher AUDIT scores were associated with speeding via higher physical aggression. 5-HTTLPR was not directly associated with speeding or driving while impaired by alcohol (DWI), but 5-HTTLPR s’-allele carriers had lower AUDIT scores if they were not junk food eaters and the other way around, while l’/l’ homozygosity was associated with DWI via higher AUDIT scores. Conclusion: Significant associations exist between risky traffic behaviour and aspects of lifestyle such as consumption of alcohol or junk food or energy drinks, as well as engagement in vigorous physical activity, while traits such as aggressiveness and the variation in the serotonergic system appear as mediating and moderating factors. Interventions preventing 3 accidents should focus on wider array of behaviours and use personalised approach. Genetic variation should be investigated regarding associations with risk taking and health behaviour, and response to interventions.
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Variants of the aggression-related RBFOX1 gene in a population representative birth cohort study: aggressiveness, personality and alcohol use disorder
(2020) Vaht, Mariliis; Laas, Kariina; Fernàndez-Castillo, Noèlia; Kurrikoff, Triin; Kanarik, Margus; Faraone, Stephen V.; Tooding, Liina-Mai; Veidebaum, Toomas; Franke, Barbara; Reif, Andreas; Cormand, Bru; Harro, Jaanus
Background Recently RBFOX1, a gene encoding an RNA binding protein, has consistently been associated with aggressive and antisocial behaviour. Several loci in the gene have been nominally associated with aggression in genome-wide association studies; the risk alleles being more frequent in general population. We have hence examined the association of four RBFOX1 single nucleotide polymorphisms, previously found related to aggressive traits, with aggressiveness, personality, and alcohol use disorder in birth cohort representative samples. Methods We used both birth cohorts of the Estonian Children Personality Behaviour and Health Study (ECPBHS; original n=1,238). Aggressiveness was assessed using the Buss-Perry Aggression Questionnaire and the Lifetime History of Aggressiveness structured interview at age 25 (younger cohort) or 33 (older cohort). Big Five personality at age 25 was measured with self reports and the lifetime occurrence of alcohol use disorder assessed with the MINI interview. RBFOX1 polymorphisms rs809682, rs8062784, rs12921846 and rs6500744 were genotyped in all participants. Given the restricted size of the sample, correction for multiple comparisons was not applied. Results Aggressiveness was not significantly associated with RBFOX1 genotype. RBFOX1 rs8062784 was associated with neuroticism and rs809682 with extraversion. Two out of four analyzed RBFOX1 variants, rs8062784, and rs12921846, were associated with occurrence of alcohol use disorder. Conclusions In the birth cohort representative sample of the ECPBHS, no association of RBFOX1 with aggressiveness was found, but RBFOX1 variants affected basic personality traits and the prevalence of alcohol use disorder. Future studies on RBFOX1 should consider the moderating role of personality and alcohol use patterns in aggressiveness.
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Vereliistakute monoamiinioksüdaasi aktiivsuse seosed agressiivsusega
(Tartu Ülikool, 2019) Tuul, Toomas; Laas, Kariina, juhendaja; Tartu Ülikool. Sotsiaalteaduste valdkond; Tartu Ülikool. Psühholoogia instituut
Ensüümi vereliistakute monoamiinioksüdaasi (vMAO, MAO-B) aktiivsust on seostatud agressiivsusega, kuid seose suund on uuringutes erinev. Käesolevas töös uurisin Eesti laste isiksuse, käitumise ja tervise longituuduuringu (ELIKTU) valimi noorema kohordi vMAO aktiivsuse seoseid agressiivsusega, arvestades ka suitsetamise ja soo mõju. Uurisin ka võimalikku U-kujulist seost. vMAO aktiivsust ja suitsetamise sagedust mõõdeti neljas vanuses: 9-aastaselt (n=583), 15-aastaselt (n=483), 18-aastaselt (n=454) ja 25-aastaselt (n=437). Agressiivse käitumise ajalugu mõõdeti samal valimil 25-aastaselt LHA (Life History of Aggression) küsimustiku abil. Dispersioonanalüüs, korrelatsioonid kui ka andmepunktide visualiseerimine näitasid negatiivseid seoseid vaid vMAO ja väljapoole suunatud agressiivsuse vahel eri vanustes, ning seosed olid pigem lineaarsed, seega U-kujulised seosed kinnitust ei leidnud. Madalama vMAO seos kõrgema agressiivsusega oli seda tugevam, mida väiksem oli aeg bioproovi võtmise ja agressiivsuse intervjuu vahel. Kovariatsioonianalüüsil jäid vMAO seosed agressiivsusega usaldusväärseks ka suitsetamise arvesse võtmisel, kuid soolised erinevused muutsid vMAO seosed agressiivsusega mitteoluliseks.