| Correction to: Neutrophil/lymphocyte ratio and platelet/lymphocyte ratio in Behçet's disease: which and when to use? The authors wish to acknowledge that whilst this study and that published in Hammad et al [1] explore different areas – blood cell ratios and serum endocan, respectively – the reader may identify some similarities between the papers owing to the same patient cohort being analysed in both studies. | |
| Correction to: Mortality in patients with systemic lupus erythematosus in Colombia: a case series The presentation of data on the Table 3 of the published version of the above mentioned article was incorrect. The heading "Bacterial infections" should be presented under the heading "Infections". The original article has been corrected. | |
| Correction to: Piriformis pyomyositis, a cause of piriformis syndrome—a systematic search and review The First name of the co-author of the article mentioned above was incomplete. The author's complete name should have been "Md Abu Bakar Siddiq" instead of "Abu Bakar Siddiq". The original article has been corrected. | |
| Letter to Editor: Serum interleukin-37 level and interleukin-37 gene polymorphism in patients with Behçet disease | |
| Correction to: PANLAR consensus statement on biosimilars The two co-authors of the mentioned above article were incorrect. The correct are authors should have been "P. A. Beltrán" instead of "P. A. B. Roa" and "J. F. Diaz-Coto" instead of "L. Diaz Soto". | |
Reversible alopecia areata: a little known side effect of leflunomideAbstractLeflunomide is a disease-modifying anti-rheumatic drug (DMARD) used in the management of rheumatoid arthritis (RA) and psoriatic arthritis. Commonly reported adverse effects include diarrhea, nausea, hepatotoxicity, hypertension, and transient global hair loss; however, additional side effects may be associated with the medication not reported in the monograph. We describe a rare case of reversible alopecia areata (AA) associated with the use of leflunomide and provide a literature review of three published similar cases. We use the Naranjo adverse drug reaction score to show the AA in our case is a "probable" side effect of leflunomide. Currently, AA is not listed as an adverse effect in the leflunomide product monograph. However, it would appear that based on our case and the three other reported cases, the likelihood of AA being an adverse effect of leflunomide is at least possible to probable. | |
Prevalence of frailty and its associated factors in patients with rheumatoid arthritis: a cross-sectional analysisAbstractObjectivesThe aims of the present research were to assess the prevalence of frailty and its potential associated factors in a cohort of adult patients with rheumatoid arthritis (RA). MethodsConsecutive RA patients and healthy controls were assessed according to the Survey of Health, Ageing and Retirement in Europe Frailty Instrument (SHARE-FI), and classified as frail, pre-frail, or non-frail. Chi-square, analysis of variance (ANOVA), and multinomial logistic regression analyses were used to test the prognostic value of frailty for the outcomes of interest. ResultsTwo hundred and ten consecutive RA patients (65.7% female, mean age 60.4 years) and 100 healthy controls (63% female, mean age 59.1 years) were included. According to SHARE-FI criteria, 35 RA patients (16.6%) were categorized as frail, 68 (32.4%) as pre-frail, and 107 (51%) as non-frail, while 8 control subjects were categorized as frail, (8%), 17 as pre-frail (17%), and 75 as non-frail (75%) (chi-squared 12.8; P = 0.0016). The results from logistic regression analysis revealed that age (odds ratio [OR] = 1.12, 95% confidence interval [CI] = 1.07–1.17; P < 0.0001), comorbidities (OR = 1.51, 95% CI = 1.01–2.27; P = 0.0446), and high disease activity (OR = 1.10, 95% CI = 1.04–1.16; P = 0.0006) were independently associated with frailty in RA. ConclusionsFrailty or pre-frailty are common in RA. The SHARE-FI may be a useful tool for the screening of frailty in RA and may summarize the results of a comprehensive RA assessment providing a marker of deficits accumulation. | |
Detection of Familial Mediterranean Fever attacks by using a connected activity tracker and assessment of impact of attacks to daily physical activities: a pilot studyAbstractObjectiveThe objective of this study was to assess the impact of Familial Mediterranean Fever (FMF) attacks on daily physical activity and detect FMF attacks using a connected activity tracker. MethodsPatients with FMF according to the Tel-Hashomer criteria were included in this prospective observational study. Attack-related data were collected weekly via phone call to avoid memory bias. Median steps in attack and attack-free days were calculated and compared using the Wilcoxon rank test. Sensitivity and specificity threshold for capturing attacks was set to two thirds of median steps per day in the whole observation period. ResultsTwelve patients participated in the study. The median age of patients was 26 (18–32) years, and 7 (58.3%) of them were male. Patients with attacks (n = 10) walked a median of 6990 (4552–11,531) steps per day in attack-free days, whereas this number decreased to a median of 1841 (590–4783) steps in attack days (p = 0.005). The activity tracker captured 42 of 45 attack days and 312 of 361 attack-free days. The cutoff value had 93% sensitivity and 86% specificity for capturing attacks. ConclusionsFMF attacks significantly impair the physical activity of patients. Activity tracking may be a reasonable method to document FMF attacks. This might prevent errors due to memory bias and help accurately identify and treat patients with FMF. | |
Elevated circulating T cell subsets and cytokines expression in patients with rheumatoid arthritisAbstractObjectiveThis study aimed to assess the role of different subsets of circulating follicular helper T cells (Tfh), central memory (TCM), effector memory (TEM), Naïve T, chemokines, and cytokines in the pathogenesis of rheumatoid arthritis (RA). MethodsBlood samples from RA patients (n = 44) and healthy controls (n = 37) were analyzed. The frequencies of circulating Tfh, TCM, TEM, and Naïve T cell subsets were enumerated, and the expression of co-stimulatory molecules, such as inducible co-stimulator (ICOS) and programmed death-1 (PD1), on these cells was evaluated by flow cytometry. The disease state in RA patients was assessed using the DAS28. Concentrations of C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), anti-cyclic citrullinated peptide (anti-CCP), and rheumatoid factor (RF) were measured. Cytokines and chemokines, such as IL-1β, TNF-α, IL-4, IL-6, IL-9, IL-17A, MCP-1, IL-10, IL-12p70, and IL-21, were measured by a cytometric beads array assay. ResultsThe percentages of circulating PD1+ICOS+ Tfh, PD1+ICOS+ TEM, and PD1+ICOS+ TCM of PBMCs from RA patients were higher than those in healthy controls. Furthermore, expression of circulating PD1+ICOS+ Tfh, PD1+ICOS+ TEM, and PD1+ICOS+ TCM showed a positive correlation with DAS28. In addition, increased levels of IL-1β, IL-6, and MCP-1 were detected in the patients with RA compared to healthy controls. ConclusionsElevated circulating T cell subsets and cytokines expression profile were observed in RA patients. IL-6, MCP-1, and IL-1β were significantly increased in RA, and PD1+ICOS+ TEM, PD1+ICOS+ TCM, and PD1+ICOS+ Tfh cell subsets were positively correlated with disease activity DAS28. Therefore, PD1+ICOS+ TEM, PD1+ICOS+ TCM, and PD1+ICOS+ Tfh cells might serve an important role in the progression of RA. | |
MEFV gene mutations in children with Henoch–Schönlein purpura and their correlations—do mutations matter?AbstractObjectiveTo explore the frequency of MEFV gene mutations in children with Henoch–Schönlein purpura who had no prior familial Mediterranean fever diagnosis and to evaluate the association of MEFV mutations with the clinical and laboratory features of Henoch–Schönlein purpura. MethodsData of 1120 patients diagnosed with Henoch–Schönlein purpura were reviewed retrospectively. The spectrum and degree of organ involvement and acute phase reactant levels were documented for each patient. Blood for MEFV gene mutation analysis was obtained either at the time of the Henoch–Schönlein purpura diagnosis or during follow-up visits. Pathological specimens of patients who underwent biopsy (renal/skin) were evaluated with special consideration for immunofluorescent examinations. ResultsTwo hundred and thirty-eight (21.3%) patients were found to have one of the MEFV mutations in which exon 10 mutations were the most common (16.7%). Abdominal pain, joint involvement, scrotal involvement, and relapse were more frequent, and acute-phase reactant levels were significantly high in patients with MEFV mutations. More severe characteristics were observed in the presence of homozygous exon 10 mutations. There was no significant association between exon 2 variants and clinical course of Henoch–Schönlein purpura. Patients carrying MEFV mutations did not have significantly higher levels of IgA deposits in the biopsy materials. ConclusionHenoch–Schönlein purpura in patients with homozygous exon 10 MEFV mutations seems to be more severe than that in patients carrying other mutations. In patients with exon 10 MEFV mutations, Henoch–Schönlein purpura might be considered as an associated presentation of familial Mediterranean fever rather than a separate clinical entity.
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