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1.
J Rheumatol ; 2024 Jun 01.
Article in English | MEDLINE | ID: mdl-38825356

ABSTRACT

OBJECTIVE: Neonatal lupus erythematosus (NLE) is a passively acquired autoimmune disease of infants born to anti-Ro and/or La autoantibody positive mothers. Genetics may impact NLE risk. We analyzed the genetics of infants and anti-Ro antibody positive mothers, with NLE and NLE specific manifestations. METHODS: Infants and mothers from a tertiary care clinic underwent genotyping on the Global Screening Array. We created additive non-HLA and HLA polygenic risk scores (PRSs) for systemic lupus erythematosus (SLE), from one of the largest genome wide association studies. Outcomes were any NLE manifestations, cardiac NLE, and cutaneous NLE. We tested the association between SLE-PRSs in the infant, mother, and the PRS difference between the mother and infant with NLE outcomes, in logistic regression and generalized linear mixed models (Bonferroni P<0.02). We also performed HLA-wide analyses for the outcomes (P<5.00x10-8). RESULTS: The study included 332 infants, 270 anti-Ro antibody positive mothers, and 253 mother-infant pairs. A large proportion of mothers (40.3%) and infants (41.3%) were European, and 50.0% of infants were female. More than half of the infants had NLE (53.0%), including 7.2% with cardiac NLE and 11.7% with cutaneous NLE. We did not identify significant associations between infant, maternal, or maternal-infant PRSs and any NLE outcomes. HLA-wide analyses did not identify NLE risk alleles. CONCLUSION: In a multiethnic cohort of infants and anti-Ro antibody positive mothers, we did not identify a significant association between SLE genetics and risk of NLE outcomes.

2.
Lupus ; 33(8): 874-885, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38774953

ABSTRACT

BACKGROUND: Depressive and anxiety symptoms are common in childhood-onset systemic lupus erythematosus (cSLE), yet their etiology and course remain unclear. We investigated the frequency of depressive and anxiety symptoms longitudinally in youth with cSLE, and associated socio-demographic and disease factors. METHODS: Participants 8-18 years with cSLE completed baseline measures [demographic questionnaire, Center for Epidemiologic Studies Depression Scale for Children (CES-DC), Screen for Childhood Anxiety Related Disorders (SCARED), and psychiatric interview] and follow-up measures (CES-DC and SCARED) > 6 months later. Prevalence of clinically significant depressive (score >15 on CES-DC) or anxiety symptoms (score ≥25 on SCARED) was calculated at baseline and follow-up. Baseline psychiatric interview diagnoses were tabulated. Relationships between socio-demographics (neighborhood-level material deprivation, ethnic concentration, adverse childhood event history, psychiatric condition in a first-degree relative), disease-related factors (disease duration, major organ disease, disease activity, glucocorticoid use, comorbid medical condition) and baseline depressive and anxiety scores, were examined in linear regression models. Factors with univariate associations with p < 0.2 were included in multivariable adjusted models. RESULTS: At baseline, of 51 participants with a mean disease duration of 4.3 years (SD 2.7), 35% (n = 18) and 35% (n = 18) had clinically significant depressive and anxiety symptoms, respectively. Anxiety disorder was diagnosed by psychiatric interview in 14% (n = 7), depressive disorders in 6% (n = 3), and post-traumatic stress disorder in 4% (n = 2). Adverse childhood events and first-degree relative with psychiatric condition were present in 40% (n = 20) and 37% (n = 18), respectively. In multivariable regression analysis, baseline depressive symptoms were positively correlated with neighbourhood-level material deprivation (ß = 4.2, 95% CI [1.0, 7.3], p = 0.01) and psychiatric condition in a first-degree relative (ß = 7.3, 95% CI [2.2, 12.4], p = 0.006). No associations were found between baseline anxiety scores and patient factors. At a median follow-up of 13.5 months (IQR 10.5, 18) for CES-DC (n = 34) and SCARED (n = 44), depressive and anxiety symptoms were persistent (18%, n = 6; 16%, n = 7), and newly present (24%, n = 8; 16% n = 7) at follow-up. CONCLUSION: In this sample, depressive and anxiety symptoms were prevalent and persistent. Depressive symptoms correlated with neighborhood-level material deprivation, and family psychiatric history. These findings support routine psychosocial assessment in cSLE, and provision of appropriate resources.


Subject(s)
Anxiety , Depression , Lupus Erythematosus, Systemic , Humans , Lupus Erythematosus, Systemic/psychology , Lupus Erythematosus, Systemic/complications , Lupus Erythematosus, Systemic/epidemiology , Female , Male , Child , Adolescent , Risk Factors , Depression/epidemiology , Depression/etiology , Anxiety/epidemiology , Anxiety/etiology , Prevalence , Psychiatric Status Rating Scales , Longitudinal Studies , Age of Onset , Anxiety Disorders/epidemiology , Anxiety Disorders/etiology , Surveys and Questionnaires
3.
Clin Exp Rheumatol ; 42(2): 413-424, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38488093

ABSTRACT

Psychological and emotional well-being are critical aspects of overall health for individuals with chronic rheumatologic conditions. Mental health-related literature, however, predominantly focuses on systemic lupus erythematosus or rheumatoid arthritis, with limited emphasis on idiopathic inflammatory myopathies (IIMs). High proportions of those with juvenile myositis report psychological distress at levels warranting mental health referral. Adults with dermatomyositis diagnosed with depression or anxiety do not receive adequate mental health care. Mental health symptoms in those with IIMs are associated with worse health-related quality of life, medication adherence, and disease outcomes. Despite demonstrated high rates of mental health burden, access to mental health care remains severely lacking.Data related to mental health burden is limited by small sample size, limited generalisability, variable methods of assessment, and inconsistent diagnosis codes to define mental health conditions. Additional research is needed to validate current screening tools in myositis populations. Other relevant measurable factors include disease severity, non-health- and health-related trauma exposure, loneliness, isolation, loss of control, sleep difficulties, fatigue, pain, self-esteem, body image, sexual health, and health inequities. Studiesare needed investigating the efficacy of therapeutic and pharmacologic interventions among patients with myositis who experience depression and anxiety. Currently, knowledge and resources are limited around mental health burden and potential intervention for those living with IIMs. The Myositis International Health & Research Collaborative Alliance (MIHRA) Psychological Impact Scientific Working Group offers a preliminary road map to characterise and prioritise the work ahead to understand baseline mental health burden and compare avenues for intervention.


Subject(s)
Dermatomyositis , Myositis , Adult , Humans , Child , Mental Health , Quality of Life , Global Health , Myositis/diagnosis , Myositis/therapy
4.
Biochem J ; 480(5): 297-306, 2023 05 13.
Article in English | MEDLINE | ID: mdl-36825663

ABSTRACT

The nine-amino-acid transactivation domains (9aaTAD) was identified in numerous transcription factors including Gal4, p53, E2A, MLL, c-Myc, N-Myc, and also in SP, KLF, and SOX families. Most of the 9aaTAD domains interact with the KIX domain of transcription mediators MED15 and CBP to activate transcription. The NFkB activation domain occupied the same position on the KIX domain as the 9aaTADs of MLL, E2A, and p53. Binding of the KIX domain is established by the two-point interaction involving 9aaTAD positions p3-4 and p6-7. The NFkB primary binding region (positions p3-4) is almost identical with MLL and E2A, but secondary NFkB binding region differs by the position and engages the distal NFkB region p10-11. Thus, the NFkB activation domain is five amino acids longer than the other 9aaTADs. The NFkB activation domain includes an additional region, which we called the Omichinski Insert extending activation domain length to 14 amino acids. By deletion, we demonstrated that Omichinski Insert is an entirely non-essential part of NFkB activation domain. In summary, we recognized the NFkB activation domain as prolonged 9aaTAD conserved in evolution from humans to amphibians.


Subject(s)
Amino Acids , Tumor Suppressor Protein p53 , Humans , Tumor Suppressor Protein p53/metabolism , Amino Acids/metabolism , Amino Acid Sequence , Transcriptional Activation , Transcription Factors/metabolism , NF-kappa B/metabolism , Protein Binding
5.
Cancer Immunol Immunother ; 72(5): 1209-1224, 2023 May.
Article in English | MEDLINE | ID: mdl-36376516

ABSTRACT

Recent studies have underscored the importance of gamma-delta (γδ) T cells in mediating potent MHC-unrestricted cytotoxicity in numerous malignancies. Here, we analyzed Vδ1 and Vδ2 γδ T cell subsets in newly diagnosed chronic myeloid leukemia (CML) patients (n = 40) who had initiated tyrosine kinase inhibitor (TKI) therapy including imatinib (n = 22), nilotinib (n = 14) and dasatinib (n = 4). Patient peripheral blood samples were analyzed at diagnosis and monitored prospectively at 3, 6, 12 and 18 months post-TKI. γδ T cells isolated from healthy donors and CML patients were used against K562, LAMA-84 and KYO-1 cell lines and against primary CML cells in cytotoxicity assays. We found large expansions of Vδ1 and Vδ2 T cells in patients at diagnosis compared to age-matched healthy donors (n = 40) (p < 0.0001). The γδ T cell reconstitution in patients on imatinib and also on nilotinib showed significant reductions of Vδ1 T cell and Vδ2 T cell absolute counts at 3 months compared to diagnosis. Importantly, Vδ1 and Vδ2 T absolute cell counts remained at normal levels from 3 months throughout the follow-up. Next, we observed susceptibility to specific lysis of primary CML tumor cells by Vδ1 T cells from healthy donors. Furthermore, we determined inherent cytotoxic reactivity by autologous patients' Vδ1 T lymphocytes against primary CML tumor cells. Finally, the TCR clonality profiles showed in CML patients mostly polyclonal repertoires regardless of the TKI. Our results provide further evidence into γδ T cell antileukemia immunity in CML that might be beneficial for long-term disease control and treatment outcome.


Subject(s)
Leukemia, Myelogenous, Chronic, BCR-ABL Positive , Leukemia, Myeloid , Humans , Imatinib Mesylate/pharmacology , Imatinib Mesylate/therapeutic use , Receptors, Antigen, T-Cell, gamma-delta/metabolism , T-Lymphocyte Subsets , Cell Line , Leukemia, Myeloid/metabolism , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
6.
Rheumatology (Oxford) ; 62(9): 3205-3212, 2023 09 01.
Article in English | MEDLINE | ID: mdl-36651668

ABSTRACT

OBJECTIVES: Genetics plays an important role in SLE risk, as well as osteonecrosis (ON), a significant and often debilitating complication of SLE. We aimed to identify genetic risk loci for ON in people with childhood-onset (cSLE) and adult-onset (aSLE) SLE. METHODS: We enrolled participants from two tertiary care centres who met classification criteria for SLE. Participants had prospectively collected clinical data and were genotyped on a multiethnic array. Un-genotyped single nucleotide polymorphisms (SNPs) were imputed, and ancestry was inferred using principal components (PCs). Our outcome was symptomatic ON confirmed by imaging. We completed time-to-ON and logistic regression of ON genome-wide association studies (GWASs) with covariates for sex, age of SLE diagnosis, five PCs for ancestry, corticosteroid use and selected SLE manifestations. We conducted separate analyses for cSLE and aSLE and meta-analysed results using inverse-variance weighting. Genome-wide significance was P < 5 × 10-8. RESULTS: The study included 940 participants with SLE, 87% female and 56% with cSLE. ON was present in 7.6% (n = 71). Median age of SLE diagnosis was 16.9 years (interquartile range [IQR]: 13.5, 29.3), with median follow-up of 8.0 years (IQR: 4.2, 15.7). Meta-GWAS of cSLE and aSLE time-to-ON of 4 431 911 SNPs identified a significant Chr.2 SNP, rs34118383 (minor allele frequency = 0.18), intronic to WIPF1 (hazard ratio = 3.2 [95% CI: 2.2, 4.8]; P = 1.0 × 10-8). CONCLUSION: We identified an intronic WIPF1 variant associated with a 3.2 times increased hazard for ON (95% CI: 2.2, 4.8; P = 1.0 × 10-8) during SLE follow-up, independent of corticosteroid exposure. The effect of the SNP on time-to-ON was similar in cSLE and aSLE. This novel discovery represents a potential ON risk locus. Our results warrant replication.


Subject(s)
Genome-Wide Association Study , Lupus Erythematosus, Systemic , Adult , Humans , Child , Female , Adolescent , Male , Age of Onset , Lupus Erythematosus, Systemic/complications , Lupus Erythematosus, Systemic/genetics , Lupus Erythematosus, Systemic/diagnosis , Genotype , Severity of Illness Index , Cytoskeletal Proteins/genetics , Intracellular Signaling Peptides and Proteins/genetics
7.
Rheumatology (Oxford) ; 62(11): 3610-3618, 2023 11 02.
Article in English | MEDLINE | ID: mdl-36394258

ABSTRACT

OBJECTIVE: To phenotype SLE based on symptom burden (disease damage, system involvement and patient reported outcomes), with a specific focus on objective and subjective cognitive function. METHODS: SLE patients ages 18-65 years underwent objective cognitive assessment using the ACR Neuropsychological Battery (ACR-NB) and data were collected on demographic and clinical variables, disease burden/activity, health-related quality of life (HRQoL), depression, anxiety, fatigue and perceived cognitive deficits. Similarity network fusion (SNF) was used to identify patient subtypes. Differences between the subtypes were evaluated using Kruskal-Wallis and χ2 tests. RESULTS: Of the 238 patients, 90% were female, with a mean age of 41 years (s.d. 12) and a disease duration of 14 years (s.d. 10) at the study visit. The SNF analysis defined two subtypes (A and B) with distinct patterns in objective and subjective cognitive function, disease burden/damage, HRQoL, anxiety and depression. Subtype A performed worst on all significantly different tests of objective cognitive function (P < 0.03) compared with subtype B. Subtype A also had greater levels of subjective cognitive function (P < 0.001), disease burden/damage (P < 0.04), HRQoL (P < 0.001) and psychiatric measures (P < 0.001) compared with subtype B. CONCLUSION: This study demonstrates the complexity of cognitive impairment (CI) in SLE and that individual, multifactorial phenotypes exist. Those with greater disease burden, from SLE-specific factors or other factors associated with chronic conditions, report poorer cognitive functioning and perform worse on objective cognitive measures. By exploring different ways of phenotyping SLE we may better define CI in SLE. Ultimately this will aid our understanding of personalized CI trajectories and identification of appropriate treatments.


Subject(s)
Cognitive Dysfunction , Lupus Erythematosus, Systemic , Humans , Female , Adult , Male , Quality of Life/psychology , Lupus Erythematosus, Systemic/complications , Lupus Erythematosus, Systemic/diagnosis , Cognitive Dysfunction/diagnosis , Cognitive Dysfunction/etiology , Anxiety , Machine Learning
8.
Rheumatology (Oxford) ; 62(11): 3749-3756, 2023 11 02.
Article in English | MEDLINE | ID: mdl-36916720

ABSTRACT

OBJECTIVES: Genome-wide association studies (GWAS) have identified loci associated with estimated glomerular filtration rate (eGFR). Few LN risk loci have been identified to date. We tested the association of SLE and eGFR polygenic risk scores (PRS) with repeated eGFR measures from children and adults with SLE. METHODS: Patients from two tertiary care lupus clinics that met ≥4 ACR and/or SLICC criteria for SLE were genotyped on the Illumina MEGA or Omni1-Quad arrays. PRSs were calculated for SLE and eGFR, using published weighted GWA-significant alleles. eGFR was calculated using the CKD-EPI and Schwartz equations. We tested the effect of eGFR- and SLE-PRSs on eGFR mean and variance, adjusting for age at diagnosis, sex, ancestry, follow-up time, and clinical event flags. RESULTS: We included 1158 SLE patients (37% biopsy-confirmed LN) with 36 733 eGFR measures over a median of 7.6 years (IQR: 3.9-15.3). LN was associated with lower within-person mean eGFR [LN: 93.8 (s.d. 26.4) vs non-LN: 101.6 (s.d. 17.7) mL/min per 1.73 m2; P < 0.0001] and higher variance [LN median: 157.0 (IQR: 89.5, 268.9) vs non-LN median: 84.9 (IQR: 46.9, 138.2) (mL/min per 1.73 m2)2; P < 0.0001]. Increasing SLE-PRSs were associated with lower mean eGFR and greater variance, while increasing eGFR-PRS was associated with increased eGFR mean and variance. CONCLUSION: We observed significant associations between SLE and eGFR PRSs and repeated eGFR measurements, in a large cohort of children and adults with SLE. Longitudinal eGFR may serve as a powerful alternative outcome to LN categories for discovery of LN risk loci.


Subject(s)
Lupus Erythematosus, Systemic , Lupus Nephritis , Humans , Adult , Child , Genome-Wide Association Study , Lupus Erythematosus, Systemic/complications , Glomerular Filtration Rate , Genotype , Kidney , Lupus Nephritis/genetics , Lupus Nephritis/complications
9.
Lupus ; 32(5): 612-624, 2023 Apr.
Article in English | MEDLINE | ID: mdl-36922154

ABSTRACT

Systemic Lupus Erythematosus (SLE) is a complex chronic autoimmune disease disproportionally afflicting women and, in particular, American Indian/Alaska Native, Black, and Hispanic women. These groups of women have significantly worse SLE-related health outcomes which are partially attributable to their exposure to marginalizing and interconnecting social issues like racism, sexism, economic inequality, and more. Although these groups of women have higher rates of SLE and though it is well known that they are at risk of exposure to marginalizing social phenomena, relatively little SLE literature explicitly links and addresses the relationship between marginalizing social issues and poor SLE-health outcomes among these women. Therefore, we developed a community-engaged partnership with two childhood-SLE diagnosed women of color to identify their perspectives on which systemic issues impacted on their SLE health-related outcomes. Afterward, we used Cochrane guidelines to conduct a rapid review associated with these identified issues and original SLE research. Then, we adapted an ecological model to illustrate the connection between systems issues and SLE health outcomes. Finally, we provided recommendations for ways to research and clinically mitigate SLE health inequities.


Subject(s)
Autoimmune Diseases , Lupus Erythematosus, Systemic , Humans , Female , Child , Lupus Erythematosus, Systemic/complications , Health Inequities , Autoimmune Diseases/complications
10.
J Cell Biochem ; 122(10): 1544-1555, 2021 10.
Article in English | MEDLINE | ID: mdl-34224597

ABSTRACT

The nine-amino-acid activation domain (9aaTAD) is defined by a short amino acid pattern including two hydrophobic regions (positions p3-4 and p6-7). The KIX domain of mediator transcription CBP interacts with the 9aaTAD domains of transcription factors MLL, E2A, NF-kB, and p53. In this study, we analyzed the 9aaTADs-KIX interactions by nuclear magnetic resonance. The positions of three KIX helixes α1-α2-α3 are influenced by sterically-associated hydrophobic I611, L628, and I660 residues that are exposed to solvent. The positions of two rigid KIX helixes α1 and α2 generate conditions for structural folding in the flexible KIX-L12-G2 regions localized between them. The three KIX I611, L628, and I660 residues interact with two 9aaTAD hydrophobic residues in positions p3 and p4 and together build a hydrophobic core of five residues (5R). Numerous residues in 9aaTAD position p3 and p4 could provide this interaction. Following binding of the 9aaTAD to KIX, the hydrophobic I611, L628, and I660 residues are no longer exposed to solvent and their position changes inside the hydrophobic core together with position of KIX α1-α2-α3 helixes. The new positions of the KIX helixes α1 and α2 allow the KIX-L12-G2 enhanced formation. The second hydrophobic region of the 9aaTAD (positions p6 and p7) provides strong binding with the KIX-L12-G2 region. Similarly, multiple residues in 9aaTAD position p6 and p7 could provide this interaction. In conclusion, both 9aaTAD regions p3, p4 and p6, p7 provide co-operative and highly universal binding to mediator KIX. The hydrophobic core 5R formation allows new positions of the rigid KIX α-helixes and enables the enhanced formation of the KIX-L12-G2 region. This contributes to free energy and is the key for the KIX-9aaTAD binding. Therefore, the 9aaTAD-KIX interactions do not operate under the rigid key-and-lock mechanism what explains the 9aaTAD natural variability.


Subject(s)
Basic Helix-Loop-Helix Transcription Factors/metabolism , CREB-Binding Protein/metabolism , Histone-Lysine N-Methyltransferase/metabolism , Myeloid-Lymphoid Leukemia Protein/metabolism , NF-kappa B/metabolism , Tumor Suppressor Protein p53/metabolism , Amino Acid Motifs , Basic Helix-Loop-Helix Transcription Factors/chemistry , Binding Sites , CREB-Binding Protein/chemistry , Histone-Lysine N-Methyltransferase/chemistry , Humans , Myeloid-Lymphoid Leukemia Protein/chemistry , NF-kappa B/chemistry , Protein Binding , Protein Interaction Domains and Motifs , Transcription Factors/chemistry , Transcription Factors/metabolism , Tumor Suppressor Protein p53/chemistry
11.
Lupus ; 30(8): 1327-1337, 2021 Jul.
Article in English | MEDLINE | ID: mdl-34078154

ABSTRACT

BACKGROUND: There are no validated screening measures for depressive or anxiety disorders in childhood Systemic Lupus Erythematosus (cSLE). We investigated cross-sectionally (1) the prevalence of depressive and anxiety disorder in cSLE. (2) the validity of the Centre for Epidemiologic Studies Depression Scale for Children (CES-DC) and the Screen for Childhood Anxiety and Related Disorders (SCARED) measures in identifyingthese disorders. METHODS: Participants 8-18 years with cSLE/incipient cSLE completed CES-DC, SCARED, and Quality OfMy Life (QOML) measures. Parents completed the SCARED-Parent measure. Diagnosis was by gold-standard psychiatric interview and determined prevalence of psychiatric disorder. Receiver Operating Characteristics Area under the Curve (ROCAUC) evaluated screening measure diagnostic performance. RESULTS: Ofseventy-two parent-child dyads, 56 interviews were completed. Mean screen scores were: CES-DC = 15 (range 1-49, SD 12), SCARED-C = 22 (range 2-61, SD 14), SCARED-P = 13 (range 0-36, SD 8). Depressive disorder screen positivity (CES-DC ≥ 15) was 35% (vs. prevalence 5%). Anxiety disorder screen positivity (SCARED ≥ 25) was 39% (vs. prevalence 16%). CES-DC ROCAUC = 0.98 and SCARED-C ROCAUC = 0.7 (cut-points 38 and 32 respectively). CONCLUSIONS: Diagnostic thresholds for depressive and anxiety disorderscreening measures are high for both CES-DC and SCARED-C in cSLE. Brief focused interview should follow to determine whether psychiatric evaluation is warranted.


Subject(s)
Lupus Erythematosus, Systemic , Adolescent , Anxiety , Anxiety Disorders/diagnosis , Anxiety Disorders/epidemiology , Humans , Lupus Erythematosus, Systemic/diagnosis , Lupus Erythematosus, Systemic/epidemiology , Mass Screening , Self Report
12.
Lupus ; 30(10): 1660-1670, 2021 Sep.
Article in English | MEDLINE | ID: mdl-34219529

ABSTRACT

Lupus nephritis (LN) is a life-threatening manifestation of systemic lupus erythematosus (SLE) and is more common in children than adults. The epidemiology and management of childhood-onset SLE (cSLE) have changed over time, prompting the need to reassess expected outcomes. The purpose of this study is to use the Childhood Arthritis and Rheumatology Research Alliance (CARRA) prospective registry to validate historical principles of LN in a contemporary, real-world cohort. After an extensive literature review, six principles of LN in cSLE were identified. The CARRA registry was queried to evaluate these principles in determining the rate of LN in cSLE, median time from cSLE diagnosis to LN, short-term renal outcomes, and frequency of rituximab as an induction therapy. Of the 677 cSLE patients in the CARRA registry, 32% had documented LN. Decline in kidney function was more common in Black cSLE patients than non-Black patients (p = 0.04). Black race was associated with worse short-term renal outcomes. In short-term follow up, most children with LN had unchanged or improved kidney function, and end stage kidney disease (ESKD) was rare. Ongoing follow-up of cSLE patients in the CARRA registry will be necessary to evaluate long-term outcomes to inform risk, management, and prognosis of LN in cSLE.


Subject(s)
Lupus Erythematosus, Systemic , Lupus Nephritis , Age of Onset , Child , Cohort Studies , Humans , Kidney/physiopathology , Longitudinal Studies , Lupus Nephritis/drug therapy , Lupus Nephritis/epidemiology
13.
Cell Mol Life Sci ; 77(9): 1793-1810, 2020 May.
Article in English | MEDLINE | ID: mdl-31375868

ABSTRACT

The universal nine-amino-acid transactivation domains (9aaTADs) have been identified in numerous transcription activators. Here, we identified the conserved 9aaTAD motif in all nine members of the specificity protein (SP) family. Previously, the Sp1 transcription factor has been defined as a glutamine-rich activator. We showed by amino acid substitutions that the glutamine residues are completely dispensable for 9aaTAD function and are not conserved in the SP family. We described the origin and evolutionary history of 9aaTADs. The 9aaTADs of the ancestral Sp2 gene became inactivated in early chordates. We next discovered that an accumulation of valines in 9aaTADs inactivated their transactivation function and enabled their strict conservation during evolution. Subsequently, in chordates, Sp2 has duplicated and created new paralogs, Sp1, Sp3, and Sp4 (the SP1-4 clade). During chordate evolution, the dormancy of the Sp2 activation domain lasted over 100 million years. The dormant but still intact ancestral Sp2 activation domains allowed diversification of the SP1-4 clade into activators and repressors. By valine substitution in the 9aaTADs, Sp1 and Sp3 regained their original activator function found in ancestral lower metazoan sea sponges. Therefore, the vertebrate SP1-4 clade could include both repressors and activators. Furthermore, we identified secondary 9aaTADs in Sp2 introns present from fish to primates, including humans. In the gibbon genome, introns containing 9aaTADs were used as exons, which turned the Sp2 gene into an activator. Similarly, we identified introns containing 9aaTADs used conditionally as exons in the (SP family-unrelated) transcription factor SREBP1, suggesting that the intron-9aaTAD reservoir is a general phenomenon.


Subject(s)
Evolution, Molecular , Gene Expression Regulation , Introns/genetics , Sp2 Transcription Factor/antagonists & inhibitors , Sp2 Transcription Factor/genetics , Valine/metabolism , Amino Acid Sequence , Animals , Gene Duplication , Humans , Phylogeny , Sequence Homology , Sp2 Transcription Factor/metabolism , Transcriptional Activation , Valine/genetics
14.
Echocardiography ; 37(12): 2082-2090, 2020 12.
Article in English | MEDLINE | ID: mdl-33009676

ABSTRACT

BACKGROUND: Strain analysis with speckle-tracking echocardiography shows promise as a screening tool for silent myocardial dysfunction in pediatric-onset systemic lupus erythematosus (pSLE). We compared left ventricular (LV) systolic deformation (measured by strain) in children and adolescents with pSLE to controls, and assessed the relationship between strain, disease activity, and other noninvasive measures of cardiovascular health. METHODS: Twenty pSLE subjects ages 9-21 underwent comprehensive cardiovascular testing, including 2D speckle-tracking echocardiography, ambulatory blood pressure monitoring (ABPM), peripheral endothelial function testing, pulse wave velocity and analysis, and carotid ultrasound. Longitudinal apical-4 chamber (LSA4C ) and midpoint circumferential strain (CSmid ) were compared to that of 70 healthy controls using multivariable linear regression. Among pSLE subjects, Pearson correlation coefficients were calculated to evaluate relationships between global longitudinal or circumferential strain and other measures of cardiovascular health. RESULTS: Average SLE disease duration was 3.2 years (standard deviation [SD] 2.1). 2/20 pSLE subjects had persistent disease activity, and only one met criteria for hypertension by ABPM. LSA4C was significantly reduced in pSLE subjects compared to controls (mean -18.3 [SD 3.2] vs -21.8% [SD 2.2], P-value <.001). There was no significant difference in CSmid (-24.8 [SD 3.7] vs -25.7% [SD 3.4], P = .29). Among pSLE subjects, decreased nocturnal blood pressure dipping on ABPM was associated with reduced global circumferential strain (r -0.59, P = .01). CONCLUSIONS: Longitudinal myocardial deformation is impaired in pSLE patients despite clinical remission and may represent early myocardial damage. Strain analysis should be considered in addition to standard echocardiographic assessment during follow-up of patients with pSLE.


Subject(s)
Lupus Erythematosus, Systemic , Ventricular Dysfunction, Left , Adolescent , Adult , Blood Pressure Monitoring, Ambulatory , Child , Echocardiography , Humans , Lupus Erythematosus, Systemic/complications , Lupus Erythematosus, Systemic/diagnostic imaging , Pulse Wave Analysis , Ventricular Dysfunction, Left/diagnostic imaging , Ventricular Function , Ventricular Function, Left , Young Adult
15.
J Clin Psychol Med Settings ; 27(1): 31-40, 2020 03.
Article in English | MEDLINE | ID: mdl-30989366

ABSTRACT

To examine if parent illness uncertainty is indirectly associated with child depression, anxiety, and HRQOL in the CKD/SLE population. Parent-child dyads (N = 31) from outpatient rheumatology and nephrology clinics included children (ages 9-18) diagnosed with CKD (Stage 1, 2, or nephrotic syndrome) or SLE. Parents completed demographic and uncertainty measures and children completed uncertainty, depression, anxiety, and HRQOL measures. This cross-sectional study examined mediational models using the percentile bootstrapping method. Parent uncertainty had an indirect effect on child depression, anxiety, and HRQOL through the mediator, child uncertainty. In other words, parents' illness uncertainty regarding their child's condition correlates to the child's illness uncertainty, which then is associated with the child's mental health and wellbeing. Reverse mediations illustrated that parent uncertainty did not mediate child uncertainty and outcome variables. Results extend previous research by examining parent and child illness uncertainty in understudied conditions (CKD/SLE) and the relationship to outcome variables commonly related to depression (e.g., anxiety and HRQOL). Findings allow health psychologists and medical personnel to understand the impact of uncertainty on the child's wellbeing and HRQOL. Clinical implications, including using specialized interventions to address illness uncertainty, are discussed.


Subject(s)
Attitude to Health , Lupus Erythematosus, Systemic/psychology , Parents/psychology , Quality of Life/psychology , Renal Insufficiency, Chronic/psychology , Uncertainty , Adolescent , Anxiety/psychology , Child , Cross-Sectional Studies , Depression/psychology , Female , Humans , Male , Models, Psychological , Outpatients
16.
Pain Med ; 20(3): 495-503, 2019 03 01.
Article in English | MEDLINE | ID: mdl-29905842

ABSTRACT

OBJECTIVE: Thirty percent of adults with fibromyalgia receive an opioid, but the prevalence of opioid prescribing in pediatric chronic musculoskeletal pain is unknown. The aims of this study were to determine the prevalence of and factors associated with opioid exposure and polypharmacy among children with chronic musculoskeletal pain. METHODS: In this retrospective cohort study using health care claims data from 2000 to 2013, the index date was the first ICD-9 code 729.1. Included subjects were ≥ 2 and < 18 years old at the index date with two or more codes within 12 months and 18 months of continuous enrollment. Subjects with burns, sickle cell disease, or malignancy were excluded. Opioid exposure was defined as one or more prescriptions within six months before or any time after the index date. Polypharmacy was considered minor (2-4 medications) or major (≥5 medications). RESULTS: Of 25,321 included subjects, 20% received an opioid and 26% experienced minor polypharmacy. Opioid exposure was associated with female sex (odds ratio [OR] = 1.27, P < 0.01), Caucasian race (OR = 1.27, P < 0.01), hospitalization (OR = 1.20, P < 0.01), and visit with anesthesiology (OR = 1.97, P < 0.01) or orthopedics (OR = 1.09, P < 0.05). Mental health codes were associated with decreased odds of opioid exposure (all P < 0.05). Children seen by a chiropractor or physiatrist had a reduced odds of receipt of an opioid (OR = 0.42 and 0.84, respectively, both P < 0.01). CONCLUSIONS: Twenty percent of children with chronic musculoskeletal pain received an opioid. Twenty-six percent experienced polypharmacy, with the majority receiving 2-4 medications. Increased availability of psychological and nonpharmacologic services are potential strategies to reduce opioid exposure.


Subject(s)
Analgesics, Opioid/therapeutic use , Musculoskeletal Pain/drug therapy , Pain Management/methods , Practice Patterns, Physicians'/statistics & numerical data , Adolescent , Child , Chronic Pain/drug therapy , Cohort Studies , Comorbidity , Female , Humans , Male , Musculoskeletal Pain/epidemiology , Musculoskeletal Pain/psychology , Neurodevelopmental Disorders/epidemiology , Polypharmacy , Retrospective Studies
17.
Pediatr Cardiol ; 40(5): 1017-1025, 2019 Jun.
Article in English | MEDLINE | ID: mdl-31041461

ABSTRACT

The timing and etiology of diastolic impairment in pediatric-onset systemic lupus erythematosus (SLE) are poorly understood. We compared echocardiographic metrics of left ventricular diastolic function in children at SLE diagnosis to controls and identified factors associated with diastolic indices. Echocardiograms of children aged 5-18 years within 1 year of SLE diagnosis and age-/sex-matched controls were retrospectively read by blinded cardiologists. Clinical characteristics were abstracted separately. Z-scores for diastolic indices (E/A, e', E/e', and isovolumetric relaxation time (IVRT)) were calculated using published normative data and study controls, and compared using linear mixed-effects models adjusted for blood pressure. Pericardial effusions and valvular disease were also evaluated. Linear regression was used to identify factors associated with diastolic measures. 85 children with incident SLE had echocardiograms performed a median of 6 days after diagnosis (interquartile range (IQR) 1-70). Prior cumulative prednisone exposure was minimal (median 60 mg, IQR 0-1652). SLE cases had lower E/A, lower e', higher E/e', and longer IVRT compared to controls. Though none met criteria for Grade I diastolic dysfunction, Z-scores for e', E/e', and IVRT were abnormal in 30%, 25%, and 6% of SLE cases, respectively. Greater disease activity was associated with lower septal e' (p < 0.01), higher E/e' (p = 0.02), and longer IVRT (p < 0.01). Children with incident SLE have worse diastolic indices at diagnosis compared to peers without SLE, independent of blood pressure and prior to significant prednisone exposure. Longitudinal studies will determine whether diastolic dysfunction develops in this population over time.


Subject(s)
Lupus Erythematosus, Systemic/complications , Ventricular Dysfunction, Left/physiopathology , Adolescent , Case-Control Studies , Child , Diastole/physiology , Echocardiography , Female , Humans , Male , Retrospective Studies , Ventricular Dysfunction, Left/diagnostic imaging , Ventricular Dysfunction, Left/etiology , Ventricular Function, Left/physiology
18.
Pediatr Dermatol ; 35(6): e363-e365, 2018 Nov.
Article in English | MEDLINE | ID: mdl-30168188

ABSTRACT

Parry-Romberg syndrome (PRS) is characterized by progressive atrophy of facial skin, soft tissues, muscle, and bone. En coup de sabre syndrome is a form of linear scleroderma (LS) involving the skin of the frontoparietal forehead and scalp. Both conditions can be associated with neurologic findings, including seizures. We explore a case in which skin findings and seizure burden improved with methotrexate therapy.


Subject(s)
Facial Hemiatrophy/complications , Immunosuppressive Agents/therapeutic use , Methotrexate/therapeutic use , Scleroderma, Localized/complications , Seizures/drug therapy , Brain/pathology , Child , Female , Humans , Magnetic Resonance Imaging , Remission Induction , Seizures/etiology , Skin/pathology
19.
J Pediatr ; 189: 181-188.e1, 2017 10.
Article in English | MEDLINE | ID: mdl-28734655

ABSTRACT

OBJECTIVE: To identify factors contributing to cognitive impairment in children with lupus nephritis. STUDY DESIGN: A cross-sectional analysis of a large multicenter national cohort of children with chronic kidney disease (CKD) using standardized measures to determine baseline neuropsychiatric function and health-related quality of life (HRQoL) in children with lupus nephritis (n = 34), and to compare baseline function with that in children with other forms of glomerular CKD (gCKD; n = 171). We used inverse probability weighting via a logistic model for propensity score analysis to achieve balance between children with lupus nephritis and those with other glomerular causes of CKD, adjusting for known confounders. We used linear regression models to compare neurocognitive outcomes between exposure groups, adjusting for current prednisone use and testing for an interaction between current prednisone use and lupus nephritis, and to test for an association between cognitive function and HRQoL. RESULTS: Current prednisone use was independently associated with worse attention (P < .01) and better adaptive skills (P = .04), and there was a significant interaction between current prednisone use and lupus nephritis for internalizing problems, with worse parent-reported internalizing problems in children with lupus nephritis on prednisone (P = .047). Better parent-reported HRQoL was associated with better visual memory (P = .01), and better child-reported HRQoL was associated with better attention (P < .01) and inhibitory control (P < .01). Both parent and child HRQoL were associated with better measures of executive function (P = .02 and < .001, respectively). CONCLUSION: Children with lupus nephritis have comparable or better cognitive function than their peers with other gCKDs, which is reassuring given the multiorgan and lifelong complications associated with lupus.


Subject(s)
Cognition , Lupus Nephritis/complications , Quality of Life/psychology , Renal Insufficiency, Chronic/complications , Adolescent , Child , Child, Preschool , Cohort Studies , Cross-Sectional Studies , Female , Glomerular Filtration Rate , Glucocorticoids/therapeutic use , Humans , Lupus Nephritis/drug therapy , Male , Prednisone/therapeutic use , Propensity Score , Renal Insufficiency, Chronic/drug therapy
20.
J Pediatr ; 167(6): 1397-403.e1, 2015 Dec.
Article in English | MEDLINE | ID: mdl-26316371

ABSTRACT

OBJECTIVE: To investigate differences in risk factors for depression and anxiety, such as central nervous system involvement in systemic lupus erythematosus (SLE)/mixed connective tissue disease (MCTD), by comparing youth with SLE/MCTD to peers with type 1 diabetes mellitus (T1D). STUDY DESIGN: We conducted a cross-sectional study of 50 outpatient pairs, ages 8 years and above, matching subjects with SLE/MCTD and T1D by sex and age group. We screened for depression, suicidal ideation, and anxiety using the Patient Health Questionnaire-9 and the Screen for Childhood Anxiety Related Emotional Disorders, respectively. We collected parent-reported mental health treatment data. We compared prevalence and treatment rates between subjects with SLE/MCTD and T1D, and identified disease-specific risk factors using logistic regression. RESULTS: Depression symptoms were present in 23%, suicidal ideation in 15%, and anxiety in 27% of participants. Compared with subjects with T1D, subjects with SLE/MCTD had lower adjusted rates of depression and suicidal ideation, yet poorer rates of mental health treatment (24% vs 53%). Non-White race/ethnicity and longer disease duration were independent risk factors for depression and suicidal ideation. Depression was associated with poor disease control in both groups, and anxiety with insulin pump use in subjects with T1D. CONCLUSION: Depression and anxiety are high and undertreated in youth with SLE/MCTD and T1D. Focusing on risk factors such as race/ethnicity and disease duration may improve their mental health care. Further study of central nervous system and other disease-related factors may identify targets for intervention.


Subject(s)
Anxiety/epidemiology , Depression/epidemiology , Diabetes Mellitus, Type 1/complications , Lupus Erythematosus, Systemic/complications , Mental Health , Mixed Connective Tissue Disease/complications , Risk Assessment/methods , Adolescent , Anxiety/etiology , Child , Cross-Sectional Studies , Depression/etiology , Diabetes Mellitus, Type 1/psychology , Female , Humans , Lupus Erythematosus, Systemic/psychology , Male , Mixed Connective Tissue Disease/psychology , Pennsylvania/epidemiology , Prevalence , Risk Factors
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