1. C-reactive protein, Epstein-Barr virus, and cortisol trajectories in refugee and non-refugee youth: Links with stress, mental health, and cognitive function during a randomized controlled trial
- Author
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Kristin Hadfield, Kyle S. Wiley, Catherine Panter-Brick, Amelia Sancilio, and Rana Dajani
- Subjects
Randomized control trial ,0301 basic medicine ,Cortisol secretion ,Epstein-Barr Virus Infections ,Herpesvirus 4, Human ,Refugee ,Adolescent ,Hydrocortisone ,Immunology ,Immune function ,Stress ,Article ,Cortisol ,law.invention ,03 medical and health sciences ,Behavioral Neuroscience ,Cognition ,0302 clinical medicine ,Randomized controlled trial ,law ,Intervention (counseling) ,Humans ,Medicine ,Life history ,Child ,neoplasms ,Inflammation ,Refugees ,Jordan ,Syria ,biology ,Endocrine and Autonomic Systems ,business.industry ,fungi ,C-reactive protein ,food and beverages ,Mental health ,digestive system diseases ,C-Reactive Protein ,Mental Health ,030104 developmental biology ,biology.protein ,Biomarker (medicine) ,War ,business ,030217 neurology & neurosurgery ,Clinical psychology - Abstract
Highlights • We observed multiple CRP, EBV, and HCC trajectories, indicating within-population heterogeneity. • Refugees and non-refugee adolescents showed similar CRP and HCC trajectories. • Rising CRP levels were related to perceived stress, high HCC to insecurity. • Post-intervention, HCC reduced by more than one third, while CRP and EBV did not., Experiencing childhood adversity has been associated with significant changes in inflammation, cell-mediated immunocompetence, and cortisol secretion. Relatively few studies have examined, longitudinally, alterations to inflammatory processes during adolescence, especially outside Western contexts; none have evaluated biomarker trajectories for at-risk youth in response to a structured behavioral intervention. We conducted a randomized controlled trial evaluating the efficacy of a humanitarian intervention targeting stress-alleviation, with 12–18 year-old Syrian refugees (n = 446) and Jordanian non-refugees (n = 371) living side-by-side in war-affected communities in Jordan. We measured C-reactive protein (CRP), Epstein-Barr virus antibodies (EBV), and hair cortisol concentration (HCC) at three timepoints (pre/post intervention and 11 month follow-up), and assessed three main outcomes (psychosocial stress, mental health, and cognitive function). Using growth mixture models, regressions, and growth curve models, we identified three distinct trajectories for CRP, two for EBV, and three for HCC, and examined their associations with age, gender, BMI, poverty, and trauma. We found associations with BMI for CRP, refugee status for EBV, and BMI and gender with HCC trajectory. In terms of health outcomes, we found associations between rising CRP levels and perceived stress (B = −2.92, p = .007), and between HCC hypersecretion and insecurity (B = 7.21, p = .017). In terms of responses to the intervention, we observed no differential impacts by CRP or EBV trajectories, unlike HCC. These results suggest that commonly-assayed biomarkers do not associate with health outcomes and respond to targeted interventions in straightforward ways. Our study is the first to examine multiple biomarker trajectories in war-affected adolescents, in order to better evaluate the extent, timing, and malleability of the biological signatures of poverty, conflict, and forced displacement.
- Published
- 2020
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