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Objective: Having a child with a chronic illness is a source of stress for the whole family, especially the primary caregiver. The aim of this study was to evaluate the associations between caregiver burden and both the caregiver's and child's psychological symptoms in a cohort of children with systemic lupus erythematosus (SLE)., Methods: Thirty-four patients (aged 9-18 years) with childhood-onset SLE and their caregivers participated in this study. The control group was composed of healthy children and their caregivers. Questionnaires were used to evaluate caregiver burden and the psychological status of parents and children and adolescents with and without SLE., Results: No significant difference was found between the study and control groups for caregiver burden, anxiety and depression in parents, and psychological status in children. Caregiver burden was positively correlated with parent's depression, anxiety, and behavioral and peer problems of the children, and it was negatively correlated with the children's prosocial behaviors. According to regression analyses, the parents' depression and children's peer relationship had a positive effect on caregiver burden scores., Conclusion: Physicians should be aware of the presence of psychological symptoms in patients with childhood-onset SLE and their caregivers because it can affect caregiver burden and the caregiver's psychological state. Key points •Caregiver burden was positively correlated with parent's depression and anxiety. •Caregiver burden was positively correlated with children's behavioral and peer problems. •Caregiver burden was negatively correlated with child's prosocial behaviors., (© 2021. International League of Associations for Rheumatology (ILAR).)

There is no documentation about the association between peer victimization, psychological status, and quality of life (QOL) in children and adolescents with systemic lupus erythematosus (SLE). The aim of this study was to evaluate the association between peer victimization, psychological symptoms, and QOL in a cohort of children and adolescents with SLE. Forty-one patients (aged 9-18 years) participated in this study. The control group (n = 49) was composed of healthy children and adolescents from local community. Questionnaires were used to evaluate the peer victimization, psychological status, and QOL of children and adolescents with and without SLE. No significant difference was found between the study and control groups for peer victimization, depression, state and trait anxiety, and QOL scores. The peer victimization, depression, anxiety, and self-esteem scores were negatively correlated with psychosocial and total subscale scores of QOL in the study group. According to regression analyses, trait anxiety had a negative predictive effect on the physical health domain scores of QOL, whereas trait anxiety and peer victimization had a negative effect on the psychosocial domain and total scores of QOL in the SLE patients. This study suggests that trait anxiety and peer victimization are risk factors for poor QOL in adolescents with SLE.

DNA Methylation, 5meC, is an epigenetic modification that acts as an important regulator of genomic stability and gene expressivity. Genome-wide changes in methylation have been associated with lineage-specific changes in gene expression profiles during development and in some cell-based pathologies, including oncogenesis. Cost-effective and rapid platforms for the detection of changes in the global levels of methylation are of value for the investigation of the processes that regulate methylation. Flow cytometry allows rapid and quantitative analysis of epitopes within a large number of cells. We have recently optimised the conditions required for valid detection of 5meC by immunofluorescence microscopy. These studies showed that immunological detection of 5meC requires the sequential denaturation of chromatin by a brief period of acidification followed by a partial tryptic digestion step. We have assessed the reliability of flow cytometry for the detection of changes in 5meC when coupled with this optimised epitope retrieval strategy. This study provides support for the use of high throughput screening of 5meC by flow cytometry for the analysis of the epigenetic regulation of important cell transitions.