Can anticarbamylated protein antibodies be used to support the diagnosis of systemic lupus erythematosus?

2021 ◽  
Vol 15 (14) ◽  
pp. 1253-1260
Author(s):  
Bahar Özdemir ◽  
Abdulsamet Erden ◽  
Şükran Erten ◽  
Turan H Yeşil ◽  
Murat Alışık ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Diagnostic Criteria ◽  
Lupus Erythematosus ◽  
Disease Duration ◽  
Healthy Control Group ◽  
Control Group ◽  
Systemic Lupus ◽  
Median Disease Duration ◽  
Antibody Positivity ◽  
Healthy Control

Aim: Autoantibody development plays an important role in the pathogenesis of systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). In this study, we aimed to determine the diagnostic value of anticarbamylated protein antibody (anti-CarP) antibody in SLE and RA patients and its relationship with disease prognosis. Material & method: Fifty-seven SLE patients (F/M 50/7; median age 40.9 ± 13.7; median disease duration 2 years) who met the 2012 SLICC SLE diagnostic criteria were included in the study. A total of 46 RA patients selected according to the 2010 ACR/EULAR diagnostic criteria (F/M 38/8; median age 54.2 ± 12.4; median disease duration 2 years) were included. A total of 30 healthy individuals were selected as the control group. The anti-CarP antibody was studied by using human anticarbamylated protein antibody ELISA Kit (SunRedBio, Shanghai, China). Results: Anti-CarP antibody positivity was found to be 17.4% in RA patients (p < 0.001), 54.4% in SLE patients (p < 0.001) and 3.3% in the healthy control group. The anti-CarP antibody was determined to predict SLE patients with 54.4% sensitivity and 96.7% specificity compared with the healthy control group (area under the curve: 0.755; p < 0.001). Conclusion: Anti-CarP antibody positivity was significantly higher in the SLE patients compared with the healthy control and RA group. It has significant sensitivity and specificity in both SLE and RA patients compared with the healthy controls.

scholarly journals Th Cytokine Profile in Childhood-Onset Systemic Lupus Erythematosus

2021 ◽  
Author(s):  
Wei Quan ◽  
Jingnan An ◽  
Gang Li ◽  
Guanghui Qian ◽  
Meifang Jin ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Disease Activity ◽  
Lupus Erythematosus ◽  
Peripheral Blood ◽  
Healthy Control Group ◽  
Control Group ◽  
Healthy Children ◽  
Childhood Onset ◽  
Systemic Lupus ◽  
Healthy Control

Abstract Background: Childhood-onset systemic lupus erythematosus (cSLE) is a kind of chronic inflammatory disease characterized by a highly abnormal immune system. This study aimed to detect expression of the Th cytokines IL-2, IL-4, IL-5, IL-6, IL-9, IL-10, IL-13, IL-17A, IL-17F, IL-21, IL-22, IFN-γ and TNF-α in the peripheral blood of children with cSLE; clinical symptoms; and a disease index and discuss the relationship between the Th cell cytokine regulatory network and onset of systemic lupus erythematosus (SLE) in children and disease outcome.Methods: A total of 33 children with cSLE and 30 healthy children were enrolled in this study. Children in the cSLE group were classified into the inactive cSLE group or active cSLE group according to their SLE disease activity index 2000 (SLEDAI-2K). Th cytokine profiles in peripheral blood of different groups were detected and analyzed.Results: The levels of IL-2, IL-10 and IL-21 in the cSLE group were significantly higher than those in the healthy control group (P < 0.05, P<0.01 and P<0.01, respectively). The expression of IL-2, IL-10 and IL-21 in the active cSLE group was significantly higher than that in the healthy control group (P<0.05, P<0.01 and P<0.05, respectively), but IL-22 expression was remarkably lower in the active cSLE group than in the healthy control group (P<0.001). IL-21 in the inactive SLE group was significantly higher than that in the healthy control group (P<0.05). The levels of IL-2 and IL-10 in the active cSLE group were significantly higher than those in the inactive cSLE group (P<0.01 and P<0.05). In-depth analysis showed that the expression levels of IL-2 (r=0.382, P=0.028), IL-6 (r=0.514, P=0.002) and IL-10 (r=0.429, P=0.016) were positively correlated with disease activity. Conclusion: This study provides a theoretical basis for the discovery of effective methods to regulate imbalance in T lymphocyte subsets in cSLE, which may open up potential new approaches for the diagnosis of cSLE.

scholarly journals Th cytokine profile in childhood-onset systemic lupus erythematosus

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Wei Quan ◽  
Jingnan An ◽  
Gang Li ◽  
Guanghui Qian ◽  
Meifang Jin ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Disease Activity ◽  
Lupus Erythematosus ◽  
Healthy Control Group ◽  
Control Group ◽  
Childhood Onset ◽  
Systemic Lupus ◽  
Healthy Control ◽  
Ifn Γ ◽  
Onset Systemic Lupus Erythematosus

Abstract Background Childhood-onset systemic lupus erythematosus (cSLE) is a kind of chronic inflammatory disease characterized by a highly abnormal immune system. This study aimed to detect the serum levels of Th (T helper) cytokines (IL-2, IL-4, IL-5, IL-6, IL-9, IL-10, IL-13, IL-17A, IL-17F, IL-21, IL-22, IFN-γ and TNF-α) in cSLE and healthy controls, and then to elucidate their association with clinical manifestations, disease activity and laboratory parameters. In order to provide clues for early diagnosis and timely intervention treatment of cSLE patients. Methods A total of 33 children with cSLE and 30 healthy children were enrolled in this study. Children in the cSLE group were classified into the inactive or active cSLE group according to their SLE disease activity index 2000 (SLEDAI-2 K) score. Th cytokine profiles in the peripheral blood were detected and analysed. Results Levels of IL-2, IL-10 and IL-21 in the cSLE group were significantly higher than those in the healthy control group (P < 0.05, P < 0.01 and P < 0.01, respectively). Expression of IL-2, IL-10 and IL-21 in the active cSLE group was significantly higher than that in the healthy control group (P < 0.05, P < 0.01 and P < 0.05, respectively), but that of IL-22 expression was markedly lower in the active cSLE group than in the healthy control group (P < 0.001). IL-21 in the inactive SLE group was significantly higher than that in the healthy control group (P < 0.05), and levels of IL-2 and IL-10 in the active cSLE group were significantly higher than those in the inactive cSLE group (P < 0.01 and P < 0.05). In-depth analysis showed that after excluding age, gender and drug interference, the levels of IL-2 (P < 0.05), IL-6 (P < 0.05) and IL-10 (P < 0.05) were still positively correlated with SLEDAI-2 K scores. However, the levels of IL-6 (P < 0.05) and IFN- γ (P < 0.05) were still negatively correlated with CD4+/CD8+, and the concentration of IL-6 (P < 0.05) was still positively correlated with the occurrence of nephritis. Conclusion This study provides a theoretical basis for the discovery of effective methods to regulate imbalance in T lymphocyte subsets in cSLE, which may lead to new approaches for the diagnosis of cSLE.

The use of heart rate turbulence and heart rate variability in the assessment of autonomic regulation and circadian rhythm in patients with systemic lupus erythematosus without apparent heart disease

Lupus ◽  
2017 ◽  
Vol 27 (3) ◽  
pp. 436-444 ◽  
Author(s):  
A R Poliwczak ◽  
E Waszczykowska ◽  
B Dziankowska-Bartkowiak ◽  
M Koziróg ◽  
K Dworniak
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Lupus Erythematosus ◽  
High Frequency ◽  
Autonomic Function ◽  
Disease Duration ◽  
Control Group ◽  
Systemic Lupus ◽  
Heart Rate Turbulence

Background Systemic lupus erythematosus is a progressive autoimmune disease. There are reports suggesting that patients even without overt signs of cardiovascular complications have impaired autonomic function. The aim of this study was to assess autonomic function using heart rate turbulence and heart rate variability parameters indicated in 24-hour ECG Holter monitoring. Methods Twenty-six women with systemic lupus erythematosus and 30 healthy women were included. Twenty-four hour ambulatory ECG-Holter was performed in home conditions. The basic parameters of heart rate turbulence and heart rate variability were calculated. The analyses were performed for the entire day and separately for daytime activity and night time rest. Results There were no statistically significant differences in the basic anthropometric parameters. The mean duration of disease was 11.52 ± 7.42. There was a statistically significant higher turbulence onset (To) value in patients with systemic lupus erythematosus, median To = –0.17% (minimum –1.47, maximum 3.0) versus To = –1.36% (minimum –4.53, maximum –0.41), P < 0.001. There were no such differences for turbulence slope (Ts). In the 24-hour analysis almost all heart rate variability parameters were significantly lower in the systemic lupus erythematosus group than in the healthy controls, including SDANN and r-MSSD and p50NN. Concerning the morning activity and night resting periods, the results were similar as for the whole day. In the control group, higher values in morning activity were noted for parameters that characterise sympathetic activity, especially SDANN, and were significantly lower for parasympathetic parameters, including r-MSSD and p50NN, which prevailed at night. There were no statistically significant changes for systemic lupus erythematosus patients for p50NN and low and very low frequency. There was a positive correlation between disease duration and SDNN, R = 0.417; P < 0.05 and SDANN, R = 0.464; P < 0.05, a negative correlation between low/high frequency ratio and r-MSSD, R = –0.454; P < 0.05; p50NN, R = –0.435; P < 0.05 and high frequency, R = –0.478; P < 0.05. In contrast, there was no statistically significant correlation between heart rate turbulence and other variables evaluated, including disease duration and the type of autoantibodies. Conclusion: Our study confirms the presence of autonomic disorders with respect to both heart rate variability and heart rate turbulence parameters and the presence of diurnal disturbances of sympathetic–parasympathetic balance. Further studies are required.

scholarly journals No Increase in Rate and Severity of Flares During Pregnancy and Post-Partum Period in Pregnant Patients with Systemic Lupus Erythematosus. A Sex, Age and Disease Duration Matched Controlled Study

2020 ◽  
Author(s):  
Worawit Louthrenoo ◽  
Thananant Trongkamolthum ◽  
Nuntana Kasitatnon ◽  
Antika Wongthanee
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Disease Activity ◽  
Lupus Erythematosus ◽  
Disease Duration ◽  
Post Partum ◽  
Age At Diagnosis ◽  
Controlled Study ◽  
Control Group ◽  
Systemic Lupus ◽  
Post Partum Period

Abstract Background: Flares in pregnant patients with systemic lupus erythematosus (SLE) have shown conflicting results. This study aimed to determine the disease activity, and rate and severity of flares in pregnant SLE patients compared with the non-pregnant SLE controls. Methods: The medical records of pregnant patients in the SLE cohort were identified. Controls were non-pregnant female SLE patients who were matched for age at diagnosis and disease duration prior to conception. Disease activity was determined by mSLEDAI-2K. The definition and severity of flares followed the SELANA-SLEDAI Flare Index. The disease activity was measured from 6 months prior to conception (-6M) until termination of pregnancy or delivery.Results: Ninety pregnancies occurred from 77 patients, of whom 36.67% had active disease at the time of conception. The pregnancy group was slightly, but significantly, younger than the control group at diagnosis (21.63 ± 5.89 years vs. 24.05 ± 7.27 years, p = 0.015). The SLE disease activity (mSLEDAI-2K) score was comparable in both groups from -6M to the post-partum period, with that in the control group being slightly but significantly higher than that in the pregnancy group at conception (3.57 ± 4.28 vs. 1.91 ± 3.44, p = 0.003). Of the 90 pregnancies, the overall incidence of flares in both groups was similar during pregnancy (39 vs. 26, p = 0.070). There also was no difference in the incidence of flare during each trimester, with 19 vs.7 flares among 90 pregnancies (p = 0.588) in the 1st, 12 vs. 12 among 82 (p = 0.682) in the 2nd, and 6 vs. 7 among 71 (p = 0.266) in the 3rd trimester. The incidence of flare during the post-partum period also was similar (42 vs. 30 flares among 90 pregnancies, p = 0.091). There was no difference in the severity of flare in each trimester, overall flare during pregnancy or post-partum flare. Conclusions: This study found no difference in flare rate or severity of flares between pregnant SLE patients and non-pregnant SLE controls, who were matched by sex, age at diagnosis and disease duration prior to pregnancy.

scholarly journals EVALUATION OF THE RELATIONSHIP BETWEEN IL-10, IL-17, IL-23 LEVELS AND DISEASE ACTIVITY OF SYSTEMIC LUPUS ERYTHEMATOSUS AND VITAMIN D STATUS

2021 ◽  
pp. 25-30
Author(s):  
Beyza Genç Çetin ◽  
Taşkın Şentük ◽  
Neriman Aydın
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Vitamin D ◽  
Patient Group ◽  
Lupus Erythematosus ◽  
Significant Relationship ◽  
Disease Duration ◽  
Control Group ◽  
Systemic Lupus ◽  
Vitamin D Levels ◽  
Significant Difference

Introduction: Systemic lupus erythematosus (SLE) is a multisystemic, autoimmune connective tissue disease characterized by a variable course and prognosis. We aimed to determine IL-10, IL-17 and IL-23 cytokines and vitamin D levels in SLE patients, which we think play role in the pathogenesis of the disease. Material and Method: Forty SLE patients and 20 healthy controls were included in our study. Levels of IL-10, IL-17 and IL-23 were measured by sandwich ELISA method. Quantitative data are expressed as mean ± standard deviation and median range (maximum-minimum) values. The data were analyzed at 95% confidence interval, and cases where the p value was less than 0.05 were considered statistically significant. Results: IL-10 and IL-17 levels of the control and patient groups were compared and no statistically significant difference was found (p=0.333, p=0.99). IL-23 levels of the patient group were found to be higher than the control group and were found to be statistically significant (p<0.001). No statistically significant relationship was found between disease duration or SLEDAI score and IL-23 levels (p=0.476). 25 (OH) vitamin D levels of the patient group were found to be lower than the control group and were statistically significant (p=0.003). No significant relationship was found between IL-10 and IL-17 levels and vitamin D. Significant relationship was found between IL-23 and vitamin D levels (p=0.019). Discussion: In our study, there was no significant difference between the groups in terms of IL-10 or IL-17, while IL-23 levels were found to be significantly higher in SLE patients. Vitamin D levels were found to be lower in the patient group with SLE compared to the control group, and a negative correlation was found between the disease duration and IL-23. Specific blocking of the IL-23 immune pathway can be an effective and safe treatment option in the treatment of SLE.

Neurocognitive Impairment in Corticosteroid-naive Patients with Active Systemic Lupus Erythematosus: A Prospective Study

2015 ◽  
Vol 42 (3) ◽  
pp. 441-448 ◽  
Author(s):  
Katsuji Nishimura ◽  
Masako Omori ◽  
Yasuhiro Katsumata ◽  
Eri Sato ◽  
Takahisa Gono ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Activity Index ◽  
Neurocognitive Impairment ◽  
Control Group ◽  
Digit Symbol Substitution Test ◽  
Psychomotor Speed ◽  
Systemic Lupus ◽  
Control Subjects ◽  
Healthy Control

Objective.Neurocognitive impairment (NCI) has been intensively studied in patients with systemic lupus erythematosus (SLE). However, those studies have mostly included patients who were treated with corticosteroids, which may itself induce NCI. We investigated NCI in corticosteroid-naive people with SLE who did not exhibit any overt neuropsychiatric manifestations.Methods.Forty-three inpatients with SLE who had no current or past neuropsychiatric history participated in the study. Patients and 30 healthy control subjects with similar demographic characteristics were given a 1-h battery of neuropsychological tests. NCI was defined as scores at least 2 SD below the mean of the healthy control group on at least 2 of the 7 neurocognitive domains. Results of clinical, laboratory, and neurologic tests were compared regarding the presence of NCI.Results.NCI was identified in 12 patients (27.9%) with SLE and in 2 control subjects (6.7%). Patients with SLE showed a significant impairment compared with controls on tasks assessing immediate recall, complex attention/executive function, and psychomotor speed. We identified psychomotor speed (Digit Symbol Substitution Test) as the factor that best differentiated the 2 groups. Further, we identified the score of the SLE Disease Activity Index 2000 as an independent risk factor for NCI in patients with SLE.Conclusion.We conclude that reduced psychomotor speed is an SLE-specific pattern of NCI. Verbal-memory deficits that have been reported in patients with SLE were not evident among patients who were corticosteroid-naive. Our results indicate that impaired psychomotor speed may be added to the symptoms of early SLE.

scholarly journals Association of Polymorphisms in the DNA Repair Genes XRCC1 and XRCC3 with Systemic Lupus Erythematosus

2019 ◽  
Vol 13 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Cristhiane A. Leite Da Silva ◽  
Marcial F. Galera ◽  
Regiane R. Festi ◽  
Mariano M. Espinosa ◽  
Vander Fernandes ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Dna Repair ◽  
Lupus Erythematosus ◽  
Protective Role ◽  
Control Group ◽  
Dna Repair Genes ◽  
Systemic Lupus ◽  
Genotype Frequencies ◽  
Healthy Control ◽  
Repair Genes

Background: Evidence suggests that DNA damage is implicated in the development of Systemic Lupus Erythematosus (SLE). Objective: Investigate the possible association of polymorphisms in the DNA repair genes XRCC1 and XRCC3 with SLE and its clinical and laboratory features. Methods: This is a case-control study comparing the polymorphisms in the DNA repair genes XRCC1 and XRCC3 in SLE patients and control individuals. Genotyping for DNA repair genes was performed by polymerase chain reaction-restriction fragment length polymorphism in 76 patients and 82 healthy control individuals. Results: Our data indicated that the genotype frequencies in patients with the XRCC1 Arg399Gln and XRCC3 Thr241Met polymorphisms were similar to those observed in the control group (p > 0.05). However, the frequencies of the 399Gln allele (p = 0.023, OR = 0.58, 95% CI = 0.36–0.93) and 241Met allele (p = 0.0039, OR = 0.59, 95% CI = 0.36–0.98) were significantly lower in the patients than those in the control subjects. Conclusion: We demonstrated that 399Gln and 241Met alleles may play a protective role in SLE susceptibility.

scholarly journals FRI0551 PERFORMANCE OF THE 2019 AMERICAN COLLEGE OF RHEUMATOLOGY/EUROPEAN LEAGUE AGAINST RHEUMATISM SYSTEMIC LUPUS ERYTHEMATOSUS CLASSIFICATION CRITERIA

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 877.2-877
Author(s):  
C. Vrancianu ◽  
I. Conea ◽  
A. Boca ◽  
M. Bolboceanu ◽  
C. Draganesscu ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Sensitivity And Specificity ◽  
Lupus Erythematosus ◽  
Disease Duration ◽  
Classification Criteria ◽  
Control Group ◽  
Systemic Lupus ◽  
American College Of Rheumatology ◽  
European League Against Rheumatism ◽  
European League

Background:Systemic lupus erythematosus (SLE) is a heterogenous autoimmune disease, with increased morbidity and mortality, often diagnosed in advanced stages. The recently published 2019 American College Of Rheumatology/European League Against Rheumatism (ACR/EULAR) classification criteria for SLE are weighted, hierarchically clustered criteria developed to increase reliability and the identification of early SLE.Objectives:To compare the sensitivity and specificity of the 2019 ACR/EULAR criteria with the 2012 SLICC criteria in a large single-centre cohort of patients with SLE, diagnosed according to expert oppinion.Methods:Data of SLE patients evaluated in our centre between 1996-2019 have been retrospectively analyzed. The control cohort included patients with positive antinuclear antibodies of other ethiology than SLE, evaluated between 2001-2019. The sensitivity and specificity of the 2019 ACR/EULAR and 2012 SLICC criteria were tested using the McNemar test for correlated proportions.Results:Four hundred and forty-six patients with SLE (413 women, mean±SD age 40.5±12.7 years, disease duration 10.1±9.2 years) and 67 controls (63 women, mean±SD age 50.4±12.6 years, disease duration 7.6±6.9 years; 29 systemic sclerosis (SSc), 18 mixed connective tissue dissease (MCTD), 15 undifferentiated CTD, 2 rheumatoid arthritis (RA), 2 SSc – RA overlaps and 1 dermatomyositis) were included. The sensitivity of the 2019 ACR/EULAR and 2012 SLICC criteria were similar 85.4% and 83.6 %, respectively (p=0.3). The specificity of the 2019 ACR/EULAR and 2012 SLICC criteria were 70.2 % and 86.6%, respectively (p=0.007). In the SLE group, patients missclassified according to the new 2019 ACR/EULAR criteria were 65, whereas according to the 2012 SLICC criteria were 73; of them, 44 patients did not fulfill any criteria. In the control group, patients misclassified had mainly MCTD (13/20 patients according to the new 2019 ACR/EULAR, and 8/9 according to the 2012 SLICC criteria).Conclusion:In this real-life cohort, the 2019 ACR/EULAR criteria have a similar sensitivity and lower specificity than the 2012 SLICC criteria, misclassifying especially MCTD patients. These results might be due to the long disease duration in our cohort.References:[1] Aringer M, Costenbader K, Daikh D, et al. 2019 European League Against Rheumatism/American College of Rheumatology Classification Criteria for Systemic Lupus Erythematosus. Arthritis Rheumatol. 2019;71(9):1400–1412. doi:10.1002/art.40930Disclosure of Interests:None declared

Impact of markers of endothelial injury and hypercoagulability on systemic lupus erythematosus

Lupus ◽  
2020 ◽  
Vol 29 (2) ◽  
pp. 182-190
Author(s):  
W Batista Cicarini ◽  
R C Figueiredo Duarte ◽  
K Silvestre Ferreira ◽  
C de Mello Gomes Loures ◽  
R Vargas Consoli ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Disease Activity ◽  
Lupus Erythematosus ◽  
Activity Index ◽  
Disease Activity Index ◽  
Endothelial Injury ◽  
Control Group ◽  
Systemic Lupus ◽  
Low Concentrations ◽  
The Relationship

We have explored the relationship between possible hemostatic changes and clinical manifestation of the systemic lupus erythematosus (SLE) as a function of greater or lesser disease activity according to Systemic Lupus Erythematosus Disease Activity Index-2000 (SLEDAI-2K) criteria. Endothelial injury and hypercoagulability were investigated in patients with SLE by measuring thrombomodulin (TM), D-dimer (DDi) and thrombin generation (TG) potential. A total of 90 participants were distributed into three groups: 1) women with SLE presenting with low disease activity (laSLE) (SLEDAI-2K ≤ 4), 2) women with SLE presenting with moderate to high disease activity (mhaSLE) (SLEDAI-2K > 4), and 3) a control group comprising healthy women. Levels of TM and DDi were higher both in the laSLE and mhaSLE groups compared to controls and in mhaSLE compared to the laSLE group. With respect to TG assay, lagtime and endogen thrombin potential, low concentrations of tissue factor provided the best results for discrimination among groups. Analysis of these data allow us to conclude that TM, DDi and TG are potentially useful markers for discriminating patients with very active from those with lower active disease. Higher SLE activity may cause endothelial injury, resulting in higher TG and consequently a hypercoagulability state underlying the picture of thrombosis common in this inflammatory disease.

Joint involvement influences quality of life in systemic lupus erythematosus patients

Lupus ◽  
2020 ◽  
pp. 096120332097903
Author(s):  
Francesco Natalucci ◽  
Fulvia Ceccarelli ◽  
Enrica Cipriano ◽  
Carlo Perricone ◽  
Giulio Olivieri ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Lupus Erythematosus ◽  
Disease Duration ◽  
Joint Involvement ◽  
Systemic Lupus ◽  
Median Disease Duration ◽  
Group A ◽  
Musculoskeletal Manifestations ◽  
Group B

Introduction Joint involvement represents the major determinant in quality of life (QoL)in Systemic Lupus Erhytematosus (SLE) patients. However, QoLhas been generally evaluated by non-specific questionnaires. We evaluated the relationship between SLE musculoskeletal manifestations and QoL, assessed by LupusQoL. Methods Patients with joint involvement (group A) were compared with those without this feature (group B). Disease activity was assessed by SLEDAI-2k in the whole population, while DAS28 and swollen to tender ratio were applied to assess joint activity. LupusQoL was administered to all the patients. Results Group A included 110 patients [M/F 8/102; median age 49 years (IQR 13), median disease duration 156 months (IQR 216)], group B 58 [M/F 11/47; median age 40 years (IQR 15), median disease duration 84 months (IQR 108)].We found significanlty lower values in all the LupusQoL domains except for one (burden to others) in group A in comparison with group B. A significant correlation between DAS28 values and all the LupusQoL domains in group A was found; only three domains correlated with SLEDAI-2k. Conclusions SLE-related joint involvement significantly influences disease-specific QoL. DAS28 better correlated with LupusQoL domains in comparison with SLEDAI-2k, confirming the need for specific musculoskeletal activity indices.

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