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Serotonin transporter-linked polymorphic region (5-HTTLPR) genotype and stressful life events interact to predict preschool-onset depression: a replication and developmental extension / Ryan BOGDAN in Journal of Child Psychology and Psychiatry, 55-5 (May 2014)
[article]
Titre : Serotonin transporter-linked polymorphic region (5-HTTLPR) genotype and stressful life events interact to predict preschool-onset depression: a replication and developmental extension Type de document : Texte imprimé et/ou numérique Auteurs : Ryan BOGDAN, Auteur ; Arpana AGRAWAL, Auteur ; Michael S. GAFFREY, Auteur ; Rebecca TILLMAN, Auteur ; Joan L. LUBY, Auteur Article en page(s) : p.448-457 Mots-clés : Depression stress 5-HTTLPR serotonin gene* interaction plasticity childhood development gene × environment Index. décimale : PER Périodiques Résumé : Background Scientific enthusiasm about gene × environment interactions, spurred by the 5-HTTLPR (serotonin transporter-linked polymorphic region) × SLEs (stressful life events) interaction predicting depression, have recently been tempered by sober realizations of small effects and meta-analyses reaching opposing conclusions. These mixed findings highlight the need for further research. Converging evidence suggests that the effects of 5-HTTLPR genotype may be neurodevelopmental in origin, but we are not aware of empirical studies that have investigated whether the 5-HTTLPR genotype × SLE interaction predicts preschool-onset depression (PO-MDD), the earliest validated form of depression. Methods Children (n = 234) aged 3–5 were recruited for a longitudinal study designed to examine PO-MDD. In a comprehensive baseline assessment, the child's primary caregivers completed questionnaires and were interviewed about their child's behaviors, psychiatric symptoms, and exposure to SLEs. Results A 5-HTTLPR × SLEs interaction emerged, such that children homozygous for the short allele were more susceptible to depression in the context of elevated SLE than long allele carriers. In contrast, at low SLE exposure, short allele homozygotes had fewer depressive symptoms. The data were best fit by a plasticity model with a substantial reduction in fit by diathesis-stress models. Conclusions Extending studies in adult and adolescent populations, these data suggest that 5-HTTLPR genotype may provide plasticity to environmental influence, for better or worse. Specifically, children homozygous for the short allele were more susceptible to the depressogenic effects of SLEs but benefitted, in the form of reduced depressive symptoms, in the context of relatively benign environmental conditions (i.e. relatively low SLE exposure). These data highlight the importance of examining gene × environment interactions across development, environment, and outcome but should be interpreted cautiously given the small sample size. En ligne : http://dx.doi.org/10.1111/jcpp.12142 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=231
in Journal of Child Psychology and Psychiatry > 55-5 (May 2014) . - p.448-457[article] Serotonin transporter-linked polymorphic region (5-HTTLPR) genotype and stressful life events interact to predict preschool-onset depression: a replication and developmental extension [Texte imprimé et/ou numérique] / Ryan BOGDAN, Auteur ; Arpana AGRAWAL, Auteur ; Michael S. GAFFREY, Auteur ; Rebecca TILLMAN, Auteur ; Joan L. LUBY, Auteur . - p.448-457.
in Journal of Child Psychology and Psychiatry > 55-5 (May 2014) . - p.448-457
Mots-clés : Depression stress 5-HTTLPR serotonin gene* interaction plasticity childhood development gene × environment Index. décimale : PER Périodiques Résumé : Background Scientific enthusiasm about gene × environment interactions, spurred by the 5-HTTLPR (serotonin transporter-linked polymorphic region) × SLEs (stressful life events) interaction predicting depression, have recently been tempered by sober realizations of small effects and meta-analyses reaching opposing conclusions. These mixed findings highlight the need for further research. Converging evidence suggests that the effects of 5-HTTLPR genotype may be neurodevelopmental in origin, but we are not aware of empirical studies that have investigated whether the 5-HTTLPR genotype × SLE interaction predicts preschool-onset depression (PO-MDD), the earliest validated form of depression. Methods Children (n = 234) aged 3–5 were recruited for a longitudinal study designed to examine PO-MDD. In a comprehensive baseline assessment, the child's primary caregivers completed questionnaires and were interviewed about their child's behaviors, psychiatric symptoms, and exposure to SLEs. Results A 5-HTTLPR × SLEs interaction emerged, such that children homozygous for the short allele were more susceptible to depression in the context of elevated SLE than long allele carriers. In contrast, at low SLE exposure, short allele homozygotes had fewer depressive symptoms. The data were best fit by a plasticity model with a substantial reduction in fit by diathesis-stress models. Conclusions Extending studies in adult and adolescent populations, these data suggest that 5-HTTLPR genotype may provide plasticity to environmental influence, for better or worse. Specifically, children homozygous for the short allele were more susceptible to the depressogenic effects of SLEs but benefitted, in the form of reduced depressive symptoms, in the context of relatively benign environmental conditions (i.e. relatively low SLE exposure). These data highlight the importance of examining gene × environment interactions across development, environment, and outcome but should be interpreted cautiously given the small sample size. En ligne : http://dx.doi.org/10.1111/jcpp.12142 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=231 Variations in maternal 5-HTTLPR affect observed sensitive parenting / Rolieke A. M. CENTS in Journal of Child Psychology and Psychiatry, 55-9 (September 2014)
[article]
Titre : Variations in maternal 5-HTTLPR affect observed sensitive parenting Type de document : Texte imprimé et/ou numérique Auteurs : Rolieke A. M. CENTS, Auteur ; Rianne KOK, Auteur ; Henning TIEMEIER, Auteur ; Nicole LUCASSEN, Auteur ; Eszter SZEKELY, Auteur ; Marian J. BAKERMANS-KRANENBURG, Auteur ; Albert HOFMAN, Auteur ; Vincent W.V. JADDOE, Auteur ; Marinus H. VAN IJZENDOORN, Auteur ; Frank C. VERHULST, Auteur ; Mijke P. LAMBREGTSE -VAN DEN BERG, Auteur Article en page(s) : p.1025-1032 Langues : Anglais (eng) Mots-clés : 5-HTTLPR serotonin transporter polymorphism maternal sensitivity parenting social fearfulness Index. décimale : PER Périodiques Résumé : Background Little is known about the genetic determinants of sensitive parenting. Two earlier studies examined the effect of the serotonin transporter polymorphism (5-HTTLPR) on sensitive parenting, but reported opposite results. In a large cohort we further examined whether 5-HTTLPR is a predictor of observed maternal sensitivity and whether observed child social fearfulness moderates the effect of 5-HTTLPR on maternal sensitivity. Methods The population-based cohort consisted of 767 mother–child dyads. Maternal sensitivity was repeatedly observed at the child's age of 14 months, 36 months and 48 months. Sensitivity was coded using the Ainsworth's rating scales for sensitivity and cooperation and the revised Erickson rating scales for Supportive presence and Intrusiveness. Child social fearfulness was observed using the Stranger Approach episode of the Laboratory Temperament Assessment Battery at 36 months. Results Repeated measurement analyses showed a consistent main effect of maternal 5-HTTLPR on sensitivity; mothers carrying the S-allele were more sensitive toward their children (p = .005). This effect was not explained by the child's 5-HTTLPR genotype. We found no evidence that child social fearfulness moderated the effect of 5-HTTLPR on sensitivity. Conclusions This study suggests that variations in maternal 5-HTTLPR genotype appear to be involved in the etiology of parenting behavior. The observed effects of this genetic variation are consistent with the notion that parenting may have a genetic component, but large studies are needed to find the specific small molecular effects. En ligne : http://dx.doi.org/10.1111/jcpp.12205 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238
in Journal of Child Psychology and Psychiatry > 55-9 (September 2014) . - p.1025-1032[article] Variations in maternal 5-HTTLPR affect observed sensitive parenting [Texte imprimé et/ou numérique] / Rolieke A. M. CENTS, Auteur ; Rianne KOK, Auteur ; Henning TIEMEIER, Auteur ; Nicole LUCASSEN, Auteur ; Eszter SZEKELY, Auteur ; Marian J. BAKERMANS-KRANENBURG, Auteur ; Albert HOFMAN, Auteur ; Vincent W.V. JADDOE, Auteur ; Marinus H. VAN IJZENDOORN, Auteur ; Frank C. VERHULST, Auteur ; Mijke P. LAMBREGTSE -VAN DEN BERG, Auteur . - p.1025-1032.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 55-9 (September 2014) . - p.1025-1032
Mots-clés : 5-HTTLPR serotonin transporter polymorphism maternal sensitivity parenting social fearfulness Index. décimale : PER Périodiques Résumé : Background Little is known about the genetic determinants of sensitive parenting. Two earlier studies examined the effect of the serotonin transporter polymorphism (5-HTTLPR) on sensitive parenting, but reported opposite results. In a large cohort we further examined whether 5-HTTLPR is a predictor of observed maternal sensitivity and whether observed child social fearfulness moderates the effect of 5-HTTLPR on maternal sensitivity. Methods The population-based cohort consisted of 767 mother–child dyads. Maternal sensitivity was repeatedly observed at the child's age of 14 months, 36 months and 48 months. Sensitivity was coded using the Ainsworth's rating scales for sensitivity and cooperation and the revised Erickson rating scales for Supportive presence and Intrusiveness. Child social fearfulness was observed using the Stranger Approach episode of the Laboratory Temperament Assessment Battery at 36 months. Results Repeated measurement analyses showed a consistent main effect of maternal 5-HTTLPR on sensitivity; mothers carrying the S-allele were more sensitive toward their children (p = .005). This effect was not explained by the child's 5-HTTLPR genotype. We found no evidence that child social fearfulness moderated the effect of 5-HTTLPR on sensitivity. Conclusions This study suggests that variations in maternal 5-HTTLPR genotype appear to be involved in the etiology of parenting behavior. The observed effects of this genetic variation are consistent with the notion that parenting may have a genetic component, but large studies are needed to find the specific small molecular effects. En ligne : http://dx.doi.org/10.1111/jcpp.12205 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238 Commentary: Beyond stressful life events and depression? – reflections on Bogdan et al. () / Jay BELSKY in Journal of Child Psychology and Psychiatry, 55-5 (May 2014)
[article]
Titre : Commentary: Beyond stressful life events and depression? – reflections on Bogdan et al. () Type de document : Texte imprimé et/ou numérique Auteurs : Jay BELSKY, Auteur Article en page(s) : p.458-459 Mots-clés : Gene–environment interactions stressful life events 5-HTTLPR early childhood developmental plasticity depression Index. décimale : PER Périodiques Résumé : In light of continuing disagreement, even at the meta-analytic level, as to whether the gene- × -environment (G×E) interaction involving 5-HTTLPR and stressful life events (SLEs) predicts depression, Bogdan and associates (this issue, Bogdan et al., 2014) sought to extend research on what has become a highly controversial general (GxE) and specific (5HTTLPR X SLEs) arena of inquiry. Thus, rather than seeking to replicate this specific GXE interaction in another sample of adolescents or adults, these investigators shifted the developmental focus–to very young children, aged 3-5 years of age. This re-direction was motivated by the kindling hypothesis which stipulates that the earliest episodes of depression might be especially sensitive to environmental adversity, with later episodes very much dependent on earlier ones and less a function of later-life environmental provocation. Thus, the investigators reasoned that the controversial G×E interaction might actually prove more evident and exert a more pronounced impact early in childhood than at older ages where they have been so extensively studied. En ligne : http://dx.doi.org/10.1111/jcpp.12238 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=231
in Journal of Child Psychology and Psychiatry > 55-5 (May 2014) . - p.458-459[article] Commentary: Beyond stressful life events and depression? – reflections on Bogdan et al. () [Texte imprimé et/ou numérique] / Jay BELSKY, Auteur . - p.458-459.
in Journal of Child Psychology and Psychiatry > 55-5 (May 2014) . - p.458-459
Mots-clés : Gene–environment interactions stressful life events 5-HTTLPR early childhood developmental plasticity depression Index. décimale : PER Périodiques Résumé : In light of continuing disagreement, even at the meta-analytic level, as to whether the gene- × -environment (G×E) interaction involving 5-HTTLPR and stressful life events (SLEs) predicts depression, Bogdan and associates (this issue, Bogdan et al., 2014) sought to extend research on what has become a highly controversial general (GxE) and specific (5HTTLPR X SLEs) arena of inquiry. Thus, rather than seeking to replicate this specific GXE interaction in another sample of adolescents or adults, these investigators shifted the developmental focus–to very young children, aged 3-5 years of age. This re-direction was motivated by the kindling hypothesis which stipulates that the earliest episodes of depression might be especially sensitive to environmental adversity, with later episodes very much dependent on earlier ones and less a function of later-life environmental provocation. Thus, the investigators reasoned that the controversial G×E interaction might actually prove more evident and exert a more pronounced impact early in childhood than at older ages where they have been so extensively studied. En ligne : http://dx.doi.org/10.1111/jcpp.12238 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=231 Serotonin system genes and obsessive-compulsive trait dimensions in a population-based, pediatric sample: a genetic association study / V. M. SINOPOLI in Journal of Child Psychology and Psychiatry, 60-12 (December 2019)
[article]
Titre : Serotonin system genes and obsessive-compulsive trait dimensions in a population-based, pediatric sample: a genetic association study Type de document : Texte imprimé et/ou numérique Auteurs : V. M. SINOPOLI, Auteur ; L. ERDMAN, Auteur ; C. L. BURTON, Auteur ; L. S. PARK, Auteur ; A. DUPUIS, Auteur ; J. SHAN, Auteur ; T. GOODALE, Auteur ; S. M. SHAHEEN, Auteur ; J. CROSBIE, Auteur ; Russell SCHACHAR, Auteur ; P. D. ARNOLD, Auteur Article en page(s) : p.1289-1299 Langues : Anglais (eng) Mots-clés : 5-httlpr Htr1b Htr2a Obsessive-compulsive disorder Slc6a4 genetic association phenotypic heterogeneity population-based serotonin genes serotonin system symptom dimensions Index. décimale : PER Périodiques Résumé : BACKGROUND: Serotonin system genes are commonly studied in obsessive-compulsive disorder (OCD), but genetic studies to date have produced inconsistent results, possibly because phenotypic heterogeneity has not been adequately accounted for. In this paper, we studied candidate serotonergic genes and homogenous phenotypic subgroups as presented through obsessive-compulsive (OC) trait dimensions in a general population of children and adolescents. We hypothesized that different serotonergic gene variants are associated with different OC trait dimensions and, furthermore, that they vary by sex. METHODS: Obsessive-compulsive trait dimensions (Cleaning/Contamination, Counting/Checking, Symmetry/Ordering, Superstition, Rumination, and Hoarding) were examined in a total of 5,213 pediatric participants in the community using the Toronto Obsessive-Compulsive Scale (TOCS). We genotyped candidate serotonin genes (directly genotyping the 5-HTTLPR polymorphism in SLC6A4 for 2018 individuals and using single nucleotide polymorphism (SNP) array data for genes SLC6A4, HTR2A, and HTR1B for 4711 individuals). We assessed the association between variants across these genes and each of the OC trait dimensions, within males and females separately. We analyzed OC traits as both (a) dichotomized based on a threshold value and (b) quantitative scores. RESULTS: The [LG + S] variant in 5-HTTLPR was significantly associated with hoarding in males (p-value of 0.003 and 0.004 for categorical and continuous analyses, respectively). There were no significant findings for 5-HTTLPR in females. Using SNP array data, there were significant findings for rumination in males for HTR2A SNPs (p-value of 1.04e-6 to 5.20e-6). CONCLUSIONS: This represents the first genetic association study of OC trait dimensions in a community-based pediatric sample. Our strongest results indicate that hoarding and rumination may be distinct in their association with serotonin gene variants and that serotonin gene variation may be specific to sex. Future genetic association studies in OCD should properly account for heterogeneity, using homogenous subgroups stratified by symptom dimension, sex, and age group. En ligne : http://dx.doi.org/10.1111/jcpp.13079 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=412
in Journal of Child Psychology and Psychiatry > 60-12 (December 2019) . - p.1289-1299[article] Serotonin system genes and obsessive-compulsive trait dimensions in a population-based, pediatric sample: a genetic association study [Texte imprimé et/ou numérique] / V. M. SINOPOLI, Auteur ; L. ERDMAN, Auteur ; C. L. BURTON, Auteur ; L. S. PARK, Auteur ; A. DUPUIS, Auteur ; J. SHAN, Auteur ; T. GOODALE, Auteur ; S. M. SHAHEEN, Auteur ; J. CROSBIE, Auteur ; Russell SCHACHAR, Auteur ; P. D. ARNOLD, Auteur . - p.1289-1299.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 60-12 (December 2019) . - p.1289-1299
Mots-clés : 5-httlpr Htr1b Htr2a Obsessive-compulsive disorder Slc6a4 genetic association phenotypic heterogeneity population-based serotonin genes serotonin system symptom dimensions Index. décimale : PER Périodiques Résumé : BACKGROUND: Serotonin system genes are commonly studied in obsessive-compulsive disorder (OCD), but genetic studies to date have produced inconsistent results, possibly because phenotypic heterogeneity has not been adequately accounted for. In this paper, we studied candidate serotonergic genes and homogenous phenotypic subgroups as presented through obsessive-compulsive (OC) trait dimensions in a general population of children and adolescents. We hypothesized that different serotonergic gene variants are associated with different OC trait dimensions and, furthermore, that they vary by sex. METHODS: Obsessive-compulsive trait dimensions (Cleaning/Contamination, Counting/Checking, Symmetry/Ordering, Superstition, Rumination, and Hoarding) were examined in a total of 5,213 pediatric participants in the community using the Toronto Obsessive-Compulsive Scale (TOCS). We genotyped candidate serotonin genes (directly genotyping the 5-HTTLPR polymorphism in SLC6A4 for 2018 individuals and using single nucleotide polymorphism (SNP) array data for genes SLC6A4, HTR2A, and HTR1B for 4711 individuals). We assessed the association between variants across these genes and each of the OC trait dimensions, within males and females separately. We analyzed OC traits as both (a) dichotomized based on a threshold value and (b) quantitative scores. RESULTS: The [LG + S] variant in 5-HTTLPR was significantly associated with hoarding in males (p-value of 0.003 and 0.004 for categorical and continuous analyses, respectively). There were no significant findings for 5-HTTLPR in females. Using SNP array data, there were significant findings for rumination in males for HTR2A SNPs (p-value of 1.04e-6 to 5.20e-6). CONCLUSIONS: This represents the first genetic association study of OC trait dimensions in a community-based pediatric sample. Our strongest results indicate that hoarding and rumination may be distinct in their association with serotonin gene variants and that serotonin gene variation may be specific to sex. Future genetic association studies in OCD should properly account for heterogeneity, using homogenous subgroups stratified by symptom dimension, sex, and age group. En ligne : http://dx.doi.org/10.1111/jcpp.13079 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=412