Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents

TAUSTA: Vaikka geenien ja ympäristön toisistaan riippumaton vaikutus skitsofrenian etiologiaan on osoitettu, ei aiemmissa tutkimuksissa ole kiinnitetty huomiota näiden yhdysvaikutuksiin. Suomalaisessa skitsofrenian adoptiolapsitutkimuksessa geeni-ympäristö yhdysvaikutuksen on havaittu olevan yhteyde...

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Main Authors: Eronen, Antti, Lagerstedt, Elina
Other Authors: Yhteiskuntatieteellinen tiedekunta, Faculty of Social Sciences, Psykologian laitos, Department of Psychology, University of Jyväskylä, Jyväskylän yliopisto
Format: Master's thesis
Language:eng
Published: 2013
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/42224
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author Eronen, Antti Lagerstedt, Elina
author2 Yhteiskuntatieteellinen tiedekunta Faculty of Social Sciences Psykologian laitos Department of Psychology University of Jyväskylä Jyväskylän yliopisto
author_facet Eronen, Antti Lagerstedt, Elina Yhteiskuntatieteellinen tiedekunta Faculty of Social Sciences Psykologian laitos Department of Psychology University of Jyväskylä Jyväskylän yliopisto Eronen, Antti Lagerstedt, Elina Yhteiskuntatieteellinen tiedekunta Faculty of Social Sciences Psykologian laitos Department of Psychology University of Jyväskylä Jyväskylän yliopisto
author_sort Eronen, Antti
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description TAUSTA: Vaikka geenien ja ympäristön toisistaan riippumaton vaikutus skitsofrenian etiologiaan on osoitettu, ei aiemmissa tutkimuksissa ole kiinnitetty huomiota näiden yhdysvaikutuksiin. Suomalaisessa skitsofrenian adoptiolapsitutkimuksessa geeni-ympäristö yhdysvaikutuksen on havaittu olevan yhteydessä yleisesti adoptiolasten psykiatrisiin häiriöihin. TUTKIMUSONGELMA: Ennustimme adoptiolasten seurannassa todettuja mielenterveyden häiriöitä perustuen heidän adoptiovanhempiensa yksilö-Rorschach -testissä todettuihin kommunikaatiohäiriöihin standardisoituna puheen pituudella. Vertasimme tätä menetelmään, jossa kommunikaatiohäiriöt oli standardisoitu transaktioiden (vastausten) lukumäärällä löytääksemme mahdollisia eroja tuloksissa näiden kahden metodin välillä. MENETELMÄ: Adoptiolapset (n=108), joilla ei ollut DSM-III-R diagnoosia alkumittauksissa, jaettiin geneettisen riskin perusteella korkean- ja matalan riskin ryhmiin perustuen heidän biologisen äitinsä skitsofrenian spektriryhmän häiriön diagnoosiin. Ympäristöriskimuuttujana käytimme tässä tutkimuksessa vanhempien kommunikaatiohäiriötä (Communication Deviance, CD). Adoptiolapsen perinnöllisellä riskillä ja adoptiovanhempien kommunikaatiohäiriöillä sekä näiden yhdysvaikutuksella ennustettiin keskimäärin 12.5 vuoden seurannan jälkeen adoptiolasten mielenterveyden häiriöitä. TULOKSET: Lapsen perinnöllisen riskin sekä vanhemman kommunikaatiohäiriöihin kuuluvan osa-asteikon ”ajattelun häiriöt ja ristiriitaisuudet” yhdysvaikutuksella todettiin olevan yhteys adoptiolasten mielenterveyden häiriöihin. Ainoastaan perinnöllisellä riskillä sairastua skitsofreniaspektrin ryhmän häiriöön todettiin olevan yhteys adoptiolapsen mielenterveyden häiriöihin, kun selitysmallissa olivat mukana perinnöllinen riski, adoptiovanhempien kaikki kommunikaatiohäiriöt ja näiden yhdysvaikutus. JOHTOPÄÄTÖS: Käyttämämme menetelmä, jossa vanhempien kommunikaatiohäiriöpisteet jaettiin heidän testiosassa puhumiensa sanojen määrällä, ei osoittanut genetiikka-ympäristöyhdysvaikutusta lasten psykiatristen häiriöiden selittäjänä lukuun ottamatta viidettä CD-alaryhmää (ajattelun häiriöt ja ristiriitaisuudet). Vertailukohtana käyttämämme menetelmä, jossa kommunikaatiohäiriöpisteet oli jaettu transaktioiden määrällä, osoitti vahvan ympäristö-genetiikka yhdysvaikutuksen, vaikka geneettiset- ja ympäristöriskitekijät eivät yksinään osoittautuneet merkittäviksi. Näin ollen geneettinen päävaikutus ylikorostuu, mikäli kommunikaatiohäiriöpisteitä standardisoidaan puheen pituudella. BACKGROUND: Although the main effects of genes and the environment have been independently explored in the etiology of schizophrenia, previous research has not paid much attention to possible interactions between these two. In the Finnish Adoptive Family Study of Schizophrenia, gene-environment interactions have been found to be the defining predictive factor for the outbreak of general adoptee mental health problems. AIMS: We predicted the outbreak of general mental health disorders in adoptees at the follow-up by their parents’ Communication Deviance (CD) scores standardized by the length-of-speech in the individual Rorschach tests. We also did comparisons between these and Communication Deviance scores standardized by the number of transactions to find out whether these two standardization methods would yield different results. METHOD: Adoptees (n = 108) with no DSM-III diagnoses at initial assessment were divided into genetic high-risk and low-risk groups based on their biological mothers’ schizophrenia-spectrum diagnoses. We then calculated the Communication Deviance scores for the rearing family adoptive parents by dividing their individual CD scores by the number of words spoken during the individual Rorschach test. We predicted general mental health disorders of the adoptees after a 12.5 year follow-up using the high genetic risk and the adoptive parents Communication Deviance and their interaction. RESULTS: We found the interaction between the high genetic risk of the adoptee and high scores on the CD subscale “Parental reasoning problems and contradictions” to be predictors of general psychiatric disorders in the adoptee. The main effect of high genetic risk was found to be the only significant predictor of mental disorders in the adoptees when the total CD scores of the adoptive parents and their interaction with the high genetic risk were included in the model. CONCLUSION: Communication Deviance scores of the adoptive parents standardized by dividing them with the number of words spoken do not show any gene-environment interactions affecting the outbreak of general mental health disorders in the adoptees (except for CD subgroup 5, Reasoning Problems and Contradictions). However, earlier research has verified that total Communication Deviance scores standardized by the number of individual Rorschach test transactions do show a very strong gene-environment interaction, whereas the main effects of genes and the environment become non-significant. The genetic main effects therefore appear to become over-highlighted whenever the length-of-speech standardization method is used.
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Suomalaisessa skitsofrenian adoptiolapsitutkimuksessa geeni-ymp\u00e4rist\u00f6 yhdysvaikutuksen on havaittu olevan yhteydess\u00e4 yleisesti adoptiolasten psykiatrisiin h\u00e4iri\u00f6ihin.\r\nTUTKIMUSONGELMA: Ennustimme adoptiolasten seurannassa todettuja mielenterveyden h\u00e4iri\u00f6it\u00e4 perustuen heid\u00e4n adoptiovanhempiensa yksil\u00f6-Rorschach -testiss\u00e4 todettuihin kommunikaatioh\u00e4iri\u00f6ihin standardisoituna puheen pituudella. Vertasimme t\u00e4t\u00e4 menetelm\u00e4\u00e4n, jossa kommunikaatioh\u00e4iri\u00f6t oli standardisoitu transaktioiden (vastausten) lukum\u00e4\u00e4r\u00e4ll\u00e4 l\u00f6yt\u00e4\u00e4ksemme mahdollisia eroja tuloksissa n\u00e4iden kahden metodin v\u00e4lill\u00e4.\r\nMENETELM\u00c4: Adoptiolapset (n=108), joilla ei ollut DSM-III-R diagnoosia alkumittauksissa, jaettiin geneettisen riskin perusteella korkean- ja matalan riskin ryhmiin perustuen heid\u00e4n biologisen \u00e4itins\u00e4 skitsofrenian spektriryhm\u00e4n h\u00e4iri\u00f6n diagnoosiin. Ymp\u00e4rist\u00f6riskimuuttujana k\u00e4ytimme t\u00e4ss\u00e4 tutkimuksessa vanhempien kommunikaatioh\u00e4iri\u00f6t\u00e4 (Communication Deviance, CD). Adoptiolapsen perinn\u00f6llisell\u00e4 riskill\u00e4 ja adoptiovanhempien kommunikaatioh\u00e4iri\u00f6ill\u00e4 sek\u00e4 n\u00e4iden yhdysvaikutuksella ennustettiin keskim\u00e4\u00e4rin 12.5 vuoden seurannan j\u00e4lkeen adoptiolasten mielenterveyden h\u00e4iri\u00f6it\u00e4. TULOKSET: Lapsen perinn\u00f6llisen riskin sek\u00e4 vanhemman kommunikaatioh\u00e4iri\u00f6ihin kuuluvan osa-asteikon \u201dajattelun h\u00e4iri\u00f6t ja ristiriitaisuudet\u201d yhdysvaikutuksella todettiin olevan yhteys adoptiolasten mielenterveyden h\u00e4iri\u00f6ihin. Ainoastaan perinn\u00f6llisell\u00e4 riskill\u00e4 sairastua skitsofreniaspektrin ryhm\u00e4n h\u00e4iri\u00f6\u00f6n todettiin olevan yhteys adoptiolapsen mielenterveyden h\u00e4iri\u00f6ihin, kun selitysmallissa olivat mukana perinn\u00f6llinen riski, adoptiovanhempien kaikki kommunikaatioh\u00e4iri\u00f6t ja n\u00e4iden yhdysvaikutus.\r\nJOHTOP\u00c4\u00c4T\u00d6S: K\u00e4ytt\u00e4m\u00e4mme menetelm\u00e4, jossa vanhempien kommunikaatioh\u00e4iri\u00f6pisteet jaettiin heid\u00e4n testiosassa puhumiensa sanojen m\u00e4\u00e4r\u00e4ll\u00e4, ei osoittanut genetiikka-ymp\u00e4rist\u00f6yhdysvaikutusta lasten psykiatristen h\u00e4iri\u00f6iden selitt\u00e4j\u00e4n\u00e4 lukuun ottamatta viidett\u00e4 CD-alaryhm\u00e4\u00e4 (ajattelun h\u00e4iri\u00f6t ja ristiriitaisuudet). Vertailukohtana k\u00e4ytt\u00e4m\u00e4mme menetelm\u00e4, jossa kommunikaatioh\u00e4iri\u00f6pisteet oli jaettu transaktioiden m\u00e4\u00e4r\u00e4ll\u00e4, osoitti vahvan ymp\u00e4rist\u00f6-genetiikka yhdysvaikutuksen, vaikka geneettiset- ja ymp\u00e4rist\u00f6riskitekij\u00e4t eiv\u00e4t yksin\u00e4\u00e4n osoittautuneet merkitt\u00e4viksi. N\u00e4in ollen geneettinen p\u00e4\u00e4vaikutus ylikorostuu, mik\u00e4li kommunikaatioh\u00e4iri\u00f6pisteit\u00e4 standardisoidaan puheen pituudella.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "BACKGROUND: Although the main effects of genes and the environment have been independently explored in the etiology of schizophrenia, previous research has not paid much attention to possible interactions between these two. In the Finnish Adoptive Family Study of Schizophrenia, gene-environment interactions have been found to be the defining predictive factor for the outbreak of general adoptee mental health problems.\r\nAIMS: We predicted the outbreak of general mental health disorders in adoptees at the follow-up by their parents\u2019 Communication Deviance (CD) scores standardized by the length-of-speech in the individual Rorschach tests. We also did comparisons between these and Communication Deviance scores standardized by the number of transactions to find out whether these two standardization methods would yield different results.\r\nMETHOD: Adoptees (n = 108) with no DSM-III diagnoses at initial assessment were divided into genetic high-risk and low-risk groups based on their biological mothers\u2019 schizophrenia-spectrum diagnoses. We then calculated the Communication Deviance scores for the rearing family adoptive parents by dividing their individual CD scores by the number of words spoken during the individual Rorschach test. We predicted general mental health disorders of the adoptees after a 12.5 year follow-up using the high genetic risk and the adoptive parents Communication Deviance and their interaction.\r\nRESULTS: We found the interaction between the high genetic risk of the adoptee and high scores on the CD subscale \u201cParental reasoning problems and contradictions\u201d to be predictors of general psychiatric disorders in the adoptee. The main effect of high genetic risk was found to be the only significant predictor of mental disorders in the adoptees when the total CD scores of the adoptive parents and their interaction with the high genetic risk were included in the model.\r\nCONCLUSION: Communication Deviance scores of the adoptive parents standardized by dividing them with the number of words spoken do not show any gene-environment interactions affecting the outbreak of general mental health disorders in the adoptees (except for CD subgroup 5, Reasoning Problems and Contradictions). However, earlier research has verified that total Communication Deviance scores standardized by the number of individual Rorschach test transactions do show a very strong gene-environment interaction, whereas the main effects of genes and the environment become non-significant. 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spellingShingle Eronen, Antti Lagerstedt, Elina Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents communication deviance schizophrenia gene environment interaction adoption study Psykologia Psychology 202 skitsofrenia ottolapset mielenterveyshäiriöt geenit ympäristö
title Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents
title_full Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents
title_fullStr Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents
title_full_unstemmed Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents
title_short Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents
title_sort prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents
title_txtP Prediction of adoptee psychiatric disorders by interaction of genetic risk of schizophrenia and communication deviance divided by the word count of adoptive parents
topic communication deviance schizophrenia gene environment interaction adoption study Psykologia Psychology 202 skitsofrenia ottolapset mielenterveyshäiriöt geenit ympäristö
topic_facet 202 Psychology Psykologia adoption study communication deviance geenit gene environment interaction mielenterveyshäiriöt ottolapset schizophrenia skitsofrenia ympäristö
url https://jyx.jyu.fi/handle/123456789/42224 http://www.urn.fi/URN:NBN:fi:jyu-201309262360
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