Examining systemic inflammation as a pathway linking peer victimization to depressive symptoms in adolescence / Nathalie MICHELS ; George M. SLAVICH ; Matteo GILETTA in Journal of Child Psychology and Psychiatry, 66-3 (March 2025)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 66-3 (March 2025) . - p.311-321 Titre : Examining systemic inflammation as a pathway linking peer victimization to depressive symptoms in adolescence Type de document : Texte imprimé et/ou numérique Auteurs : Nathalie MICHELS, Auteur ; George M. SLAVICH, Auteur ; Matteo GILETTA, Auteur Article en page(s) : p.311-321 Langues : Anglais (eng) Mots-clés : Adolescence  depression  inflammation  interleukin-6  peer victimization  social stress Index. décimale : PER Périodiques Résumé : Background Adolescents exposed to victimization are at an increased risk for a variety of adverse mental health outcomes, including depressive symptoms. Yet, the biological pathways underlying these associations remain poorly understood. Focusing on within-person processes, we examined whether low-grade systemic inflammation mediated the longitudinal associations between peer victimization and depressive symptoms in adolescence. Methods 207 adolescents (at baseline Mage?=?12.69?years; SD?=?0.49; 43.5% female) participated in a multi-wave longitudinal study, with assessments repeated every 6?months over 1.5?years. At each assessment wave, participants self-reported their peer victimization experiences and depressive symptoms. Dried blood spots were collected at each wave using a finger prick procedure to assay a key marker of low-grade systemic inflammation, interkeukin-6 (IL-6). Data were analyzed using random-intercept cross-lagged panel models. Results The cross-lagged paths from IL-6 to depressive symptoms were significant across all models and waves (?12?=?.13; ?23?=?.12; ?34?=?.08), indicating that when adolescents' levels of low-grade systemic inflammation were above their person-specific average, they reported increased levels of depressive symptoms in the subsequent months. However, no significant cross-lagged within-person associations emerged between peer victimization and either IL-6 or depressive symptoms. Conclusions The findings provide no evidence for the hypothesized mediating role of inflammation in the within-person associations between peer victimization and depressive symptoms. Nevertheless, they extend prior research by indicating that elevated levels of low-grade systemic inflammation predict the development of depressive symptoms in adolescence. En ligne : https://doi.org/10.1111/jcpp.14060 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=548 [article] Examining systemic inflammation as a pathway linking peer victimization to depressive symptoms in adolescence [Texte imprimé et/ou numérique] / Nathalie MICHELS, Auteur ; George M. SLAVICH, Auteur ; Matteo GILETTA, Auteur . - p.311-321. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 66-3 (March 2025) . - p.311-321 Mots-clés : Adolescence  depression  inflammation  interleukin-6  peer victimization  social stress Index. décimale : PER Périodiques Résumé : Background Adolescents exposed to victimization are at an increased risk for a variety of adverse mental health outcomes, including depressive symptoms. Yet, the biological pathways underlying these associations remain poorly understood. Focusing on within-person processes, we examined whether low-grade systemic inflammation mediated the longitudinal associations between peer victimization and depressive symptoms in adolescence. Methods 207 adolescents (at baseline Mage?=?12.69?years; SD?=?0.49; 43.5% female) participated in a multi-wave longitudinal study, with assessments repeated every 6?months over 1.5?years. At each assessment wave, participants self-reported their peer victimization experiences and depressive symptoms. Dried blood spots were collected at each wave using a finger prick procedure to assay a key marker of low-grade systemic inflammation, interkeukin-6 (IL-6). Data were analyzed using random-intercept cross-lagged panel models. Results The cross-lagged paths from IL-6 to depressive symptoms were significant across all models and waves (?12?=?.13; ?23?=?.12; ?34?=?.08), indicating that when adolescents' levels of low-grade systemic inflammation were above their person-specific average, they reported increased levels of depressive symptoms in the subsequent months. However, no significant cross-lagged within-person associations emerged between peer victimization and either IL-6 or depressive symptoms. Conclusions The findings provide no evidence for the hypothesized mediating role of inflammation in the within-person associations between peer victimization and depressive symptoms. Nevertheless, they extend prior research by indicating that elevated levels of low-grade systemic inflammation predict the development of depressive symptoms in adolescence. En ligne : https://doi.org/10.1111/jcpp.14060 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=548

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