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1.
Lupus ; 31(3): 279-286, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35104178

RESUMO

INTRODUCTION: Systemic lupus erythematosus (SLE) is a multifactorial disease and MBL2 genetic variants, which are associated to differential peripheral MBL levels, potentially affect its etiology and increase infection risk in this population. OBJECTIVE: To evaluate the potential association of MBL2 polymorphisms of the coding and promoter gene region and haplotypes on hospitalization, number of admission and days of admission for major infection causes in Brazilian SLE patients. Methods: 325 SLE patients from a southern Brazilian outpatient SLE clinic were genotyped in 2006 for MBL2 gene polymorphisms from coding and promoter region (rs1800450, rs1800451, rs5030737, rs11003125, and rs7096206) and followed until 2016. Clinical and laboratory data from each patient were obtained and information regarding the need for hospitalization, the number of admissions and number of days admitted for infection treatment were compiled and compared with MBL2 gene polymorphisms and haplotypes. A linear regression analysis was constructed considering the variables of bivariate which demonstrated an association (p<0.05) and variables which had a theoretical basement. RESULTS: No difference was found in polymorphism prevalence when comparing the group that was admitted for infection treatment and the group who did not. Allele C, and haplotypes LY and HY correlated with more infection hospitalizations [wild-type homozygosis for C: 2 (IQR 1-3), heterozygosis for C: 3 (IQR 2-6) p=0.038; LY 2 (IQR 1-3) p=0.049; HY 2 (IQR 1-3) p=0.005] and haplotype HY carriers stayed fewer days in hospital for infection treatment: 18 (IQR 10-38) p=0.041. When linear regression was applied HY associated with shorter admission time for infections (-18.11 days, p=0.021) and HY (-1.52 admission, p 0.001) carriers with older age at diagnosis had less admissions for infection (HY regression model: -0.42, p=0.006; LY regression model -0.04, p=0.010; -0.04, p=0.013). CONCLUSION: The presence of the HY promoter haplotype associated to fewer in hospital care for infection treatment probably due to higher MBL plasma levels. Also, HY haplotype and older age at SLE diagnosis is related to less admissions for infection. This factor should be taken into consideration, since infection is a very import cause of mortality in SLE patients being also related to aggressive immunosuppressive treatment.


Assuntos
Lúpus Eritematoso Sistêmico , Lectina de Ligação a Manose , Seguimentos , Predisposição Genética para Doença , Genótipo , Haplótipos/genética , Humanos , Lúpus Eritematoso Sistêmico/epidemiologia , Lúpus Eritematoso Sistêmico/genética , Lectina de Ligação a Manose/genética , Polimorfismo Genético
2.
Ann Hum Genet ; 80(1): 1-6, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26464189

RESUMO

Systemic lupus erythemathosus (SLE) and rheumatoid arthritis (RA) are complex autoimmune diseases characterized by an immune balance breakdown and by chronic inflammation. Several findings link SLE and RA development with the complement system and ficolin components have emerged as candidates for disease development. Since genetic association studies with ficolin genes in SLE and RA have not yet been conducted in a Brazilian population, the aim of this study was to determine whether polymorphisms of ficolin-1(FCN1) and ficolin-2 (FCN2) genes are associated with SLE and RA susceptibility as well as disease manifestation. Two SNPs within FCN1 (rs2989727 and 1071583) and three in FCN2 (rs17514136, rs3124954, and rs7851696) were studied in 208 SLE and184 RA patients as well as 264 healthy individuals in a Southeast Brazilian population. For SLE patients, the FCN2 rs17514136 SNP was associated with a more severe disease (SLICC) (p = 0.0067). Furthermore, an association between the occurrence of nephritis and the T/T genotype for FCN2 rs3124954 SNP (p = 0.047, OR = 3.17, 95%CI = 1.34-7.5) was observed. No association was observed between the studied polymorphisms and RA development. Thus, our data support involvement of the FCN2 gene in the SLE phenotype.


Assuntos
Artrite Reumatoide/genética , Lectinas/genética , Lúpus Eritematoso Sistêmico/genética , Polimorfismo de Nucleotídeo Único , Brasil , Estudos de Casos e Controles , Estudos de Associação Genética , Genótipo , Humanos , Fenótipo , Ficolinas
3.
Mol Biol Rep ; 43(1): 41-51, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26686848

RESUMO

Rheumatoid arthritis (RA) is an autoimmune disease characterized by chronic inflammation and important joint commitment, being the most common systemic autoimmune disease worldwide. RA displays important genetic background with a variety of genes contributing to the immune balance breakdown. Recent studies have demonstrated that vitamin D, through its receptor (VDR), is able to regulate the immune balance and suppress the autoimmunity process, being a potential target in autoimmune diseases. In the present genetic association study, we assessed 5 Tag single nucleotide polymorphisms (SNPs) (rs11168268, rs2248098, rs1540339, rs4760648 and rs3890733), which cover most of the VDR gene, in three different Brazilian populations (from Northeast, Southeast and South Brazil). We also evaluated the VDR expression profile in whole blood and monocytes from RA patients. For genotyping study, 428 RA patients and 616 healthy controls were genotyped with fluorogenic allele specific probes on an ABI7500 platform. For gene expression study, VDR mRNA levels of 15 RA patients and 26 healthy individuals were assessed by RT-PCR. Our results showed that SNPs rs4760648 and rs3890733 are associated to RA susceptibility (p value = 0.0026, OR 1.31 and p value = 0.0091, OR 1.28 with statistical power = 0.999 and 0.993, respectively). Regarding RA clinical features, the studied SNPs did not show significant associations. The gene expression assays showed that VDR mRNA levels were down regulated in both whole blood (-3.3 fold) and monocytes (-3.2 fold) of RA patients when compared to healthy controls. Our results, the first reported for distinct Brazilian populations, support a role of the VDR gene in the susceptibility to RA.


Assuntos
Artrite Reumatoide/genética , Receptores de Calcitriol/genética , Alelos , Artrite Reumatoide/sangue , Brasil , Estudos de Casos e Controles , Feminino , Predisposição Genética para Doença , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único , Receptores de Calcitriol/sangue
4.
Ann Rheum Dis ; 74(6): 1019-23, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24525909

RESUMO

PURPOSE: To determine the association between the number of flares systemic lupus erythematosus (SLE) patients experience and damage accrual, independently of other known risk factors. METHODS: SLE patients (34 centres, nine Latin American countries) with a recent diagnosis (≤2 years) and ≥3 evaluations were studied. Disease activity was ascertained with the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) and damage with the SLICC/ACR Damage Index (SDI). Flare was defined as an increase ≥4 points in the SLEDAI between two study visits. An ambidirectional case- crossover design was used to determine the association between the number of flares and damage accrual. RESULTS: 901 patients were eligible for the study; 500 of them (55.5%) experienced at least one flare, being the mean number of flares 0.9 (SD: 1.0). 574 intervals from 251 patients were included in the case-crossover design since they have case and control intervals, whereas, the remaining patients did not. Their mean age at diagnosis was 27.9 years (SD: 11.1), 213 (84.9%) were women. The mean baseline SDI and SLEDAI were 1.3 (1.3) and 13.6 (8.1), respectively. Other features were comparable to those of the entire sample. After adjusting for possible confounding variables, the number of flares, regardless of their severity, was associated with damage accrual (SDI) OR 2.05, 95% CI 1.43 to 2.94, p<0.001 (OR 2.62, 95% CI 1.31 to 5.24, p=0.006 for severe and OR 1.91, 95% CI 1.28 to 2.83, p=0.001 for mild-moderate). CONCLUSIONS: The number of flares patients experience, regardless of their severity, increases the risk of damage accrual, independently of other known risk factors.


Assuntos
Progressão da Doença , Lúpus Eritematoso Sistêmico/fisiopatologia , Adolescente , Corticosteroides/uso terapêutico , Adulto , Antimaláricos/uso terapêutico , População Negra , Estudos de Casos e Controles , Estudos de Coortes , Estudos Cross-Over , Feminino , Humanos , Imunossupressores/uso terapêutico , Indígenas Sul-Americanos , América Latina , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Masculino , Índice de Gravidade de Doença , Fatores de Tempo , População Branca , Adulto Jovem
5.
Mol Biol Rep ; 41(7): 4233-9, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24570024

RESUMO

Silent mating type Information Regulator 2 homolog 1 (SIRT1) is a deacetylase protein that participates in several physiological processes with importance in transcriptional silencing, apoptosis, immune system regulation and inflammation. Systemic lupus erythematosus (SLE) is an inflammatory autoimmune disease in which upregulated expression of SIRT1 on CD4+ T lymphocytes of active patients has been reported. Also, global hypoacetylation of histones H3 and H4, with H3 hypoacetylation was correlated with a higher disease activity index. SIRT1 promoter rs12778366 and rs3758391 may account for differential expression of this molecule and the role of these variants was investigated in SLE susceptibility and morbidity. Genomic DNA was extracted from peripheral blood of 367 SLE patients and 290 healthy controls of a Southern Brazilian population. SIRT1 rs12778366 and rs3758391 were amplified through PCR and genotyped through sequencing. No statistically significant differences were observed between patients and controls for allelic, genotypic or haplotypic frequencies. Nevertheless, SIRT1 rs3758391 was not in Hardy-Weinberg equilibrium, presenting a paucity of CT heterozygous both in patients and controls. SLE patients with TT and CT genotypes displayed a higher chance of developing lupus nephritis (Pc = 0.012, OR = 2.04 95 % CI 1.32-3.14) and presented a higher disease activity index (Mean rank 170.95 vs 137.26, Pc = 0.006) when compared with CC homozygous patients. Our results suggest that SIRT1 rs3758391 modifies SLE morbidity, with rs3758391 T allele being a risk factor for nephritis and a higher SLEDAI. Nevertheless, it remains to be elucidated how SIRT1 rs3758391 functionally influences SLE severity.


Assuntos
Lúpus Eritematoso Sistêmico/genética , Polimorfismo de Nucleotídeo Único , Regiões Promotoras Genéticas , Sirtuína 1/genética , Adulto , Alelos , Estudos de Casos e Controles , Feminino , Frequência do Gene , Genótipo , Heterozigoto , Homozigoto , Humanos , Desequilíbrio de Ligação , Lúpus Eritematoso Sistêmico/patologia , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença
6.
Mol Biol Rep ; 41(9): 6167-79, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24981927

RESUMO

Systemic lupus erythematosus (SLE) is an autoimmune chronic inflammatory disease that presents several clinical manifestations, affecting multiple organs and systems. Immunological, environmental, hormonal and genetic factors may contribute to disease. Genes and proteins involved in metabolism and detoxification of xenobiotics are often used as susceptibility markers to diseases with environmental risk factors. Cytochrome P450 (CYP) enzymes activate the xenobiotic making it more reactive, while the Glutathione S-transferases (GST) enzymes conjugate the reduced glutathione with electrophilic compounds, facilitating the toxic products excretion. CYP and GST polymorphisms can alter the expression and catalytic activity of enzymes. This study aimed to investigate the role of genetic variants of CYP and GST in susceptibility and clinical expression of SLE, through the analysis of GSTM1 null, GSTT1 null, GSTP1*Ile105Val, CYP1A1*2C and CYP2E1*5B polymorphisms. 371 SLE patients from Hospital de Clínicas de Porto Alegre and 522 healthy blood donors from southern Brazil were evaluated. GSTP1 and CYP variants were genotyped using PCR-RFLP and GSTT1 and GSTM1 variants were analyzed by multiplex PCR. Among European-derived individuals, a lower frequency of GSTP1*Val heterozygous genotypes was found in SLE patients when compared to controls (p = 0.005). In African-derived SLE patients, the CYP2E1*5B allelic frequency was higher in relation to controls (p = 0.054). We did not observe any clinical implication of the CYP and GST polymorphisms in patients with SLE. Our data suggest a protective role of the GSTP1*Ile/Val heterozygous genotype against the SLE in European-derived and a possible influence of the CYP2E1*5B allele in SLE susceptibility among African-derived individuals.


Assuntos
Citocromo P-450 CYP1A1/genética , Citocromo P-450 CYP2E1/genética , Glutationa Transferase/genética , Lúpus Eritematoso Sistêmico/genética , Polimorfismo Genético , Adulto , População Negra/genética , Brasil , Estudos de Casos e Controles , Feminino , Frequência do Gene , Predisposição Genética para Doença , Genótipo , Humanos , Lúpus Eritematoso Sistêmico/diagnóstico , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Polimorfismo de Fragmento de Restrição , Espécies Reativas de Oxigênio/metabolismo , Fatores de Risco , População Branca/genética , Xenobióticos
7.
Cytokine ; 60(2): 473-7, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22763041

RESUMO

UNLABELLED: A previous study suggested that the CXCR2 (+1208) TT genotype was associated with increased risk of systemic sclerosis (SSc). In the present study, we investigated the influence of variation in the CXCL8 and CXCR2 genes on susceptibility to SSc and combined the variant alleles of these genes to analyze their effects on SSc. METHODS: One fifty one patients with SSc and 147 healthy bone marrow donors were enrolled in a case-control study. Blood was collected for DNA extraction; typing of CXCL8 (-251) T/A and CXCR2 (+1208) T/C genes was made by polymerase chain reaction with sequence specific primers (PCR-SSP), followed by agarose gel electrophoresis. RESULTS: The CXCR2-TC genotype was significantly less frequent in patients (23.8% versus 55.1% in controls; P<0.001, OR=0.26, 95%CI=0.15-0.43), whereas the CXCR2-CC genotype was significantly more frequent (44.4% versus 22.4% in controls; P<0.001, OR=2.76, 95%CI, 1.62-4.72). When CXCR2 and CXCL8 combinations were analyzed, the presence of CXCR2 T in the absence of CXCL8 A (CXCR2 T+/CXCL8 A-) was more frequent in patients than in controls (34.5% versus 3.5%; P<0.001, OR=14.50, 95%CI=5.04-41.40). However, CXCR2 TT and CXCL8 A were significantly more common in controls (100%) than in patients (58.3%) (P<0.001). Likewise, the presence of CXCR2 TC and CXCL8 A was more frequent in controls (95.1%) than in patients (75%) (P=0.004). Furthermore, the CXCR2-CC genotype in CXCL8 A was more frequent in patients (59.7% versus 0% in controls; P<0.001, adjusted OR=98.67, 95%CI=6.04-1610.8). In patients, a high frequency was observed in combination with the CXCL8 TA and AA genotypes (P<0.001; OR=28.92), whereas in controls, there was a high frequency of combination with CXCL8 T (P<0.001; OR=0.03) and TT (P<0.001; OR=0.01). CONCLUSIONS: These findings suggest a protective role of CXCL8 (-251) A in the CXCR2 (+1208) TT and TC genotypes and an increased risk of CXCL8 (-251) A in association with the CXCR2 (+1208) CC genotype in SSc patients.


Assuntos
Predisposição Genética para Doença , Interleucina-8/genética , Polimorfismo de Nucleotídeo Único/genética , Receptores de Interleucina-8B/genética , Escleroderma Sistêmico/genética , Estudos de Casos e Controles , Frequência do Gene/genética , Humanos
8.
Clin Dev Immunol ; 2012: 725684, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22761633

RESUMO

CD55, CD59, CD46, and CD35 are proteins with complement regulatory (Creg) properties that ensure cell and tissue integrity when this system is activated. The aim of this study was to evaluate the Creg expression on peripheral blood cells from SLE patients and its association with cytopenia and disease activity. Flow cytometric analyses were performed on blood cells from 100 SLE patients and 61 healthy controls. Compared with healthy controls, we observed in SLE patients with lymphopenia and neutropenia decreased expression of CD55, CD59, and CD46 (P < 0.05). In SLE patients with anemia, CD59 and CD35 were decreased on red blood cells. Furthermore, there was a negative correlation between CD55 and CD59 on neutrophils and the disease activity. The results suggest there is an altered pattern of Creg expression on the peripheral blood cells of SLE patients, and the expression is correlated with disease activity and/or with activation of the complement system.


Assuntos
Antígenos CD/metabolismo , Células Sanguíneas/metabolismo , Proteínas do Sistema Complemento/metabolismo , Lúpus Eritematoso Sistêmico/metabolismo , Adulto , Células Sanguíneas/imunologia , Antígenos CD55/metabolismo , Antígenos CD59/metabolismo , Proteínas do Sistema Complemento/imunologia , Eritrócitos/metabolismo , Feminino , Humanos , Imunofenotipagem , Lúpus Eritematoso Sistêmico/imunologia , Masculino , Proteína Cofatora de Membrana/metabolismo , Pessoa de Meia-Idade , Monócitos/metabolismo , Neutrófilos/metabolismo , Receptores de Complemento 3b/metabolismo
9.
Clin Lab ; 57(7-8): 625-9, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21888028

RESUMO

BACKGROUND: Different methods for anti-ENA identification have been used. This can lead to confusion regarding the interpretation of the test results in clinical practice. Some studies have reported differences in sensitivity and specificity, but few compare clinical outcomes. Based on that, our aim was to compare the performance characteristics of various methods commonly used to detect anti-ENA antibodies in the sera of patients suspected to have connective tissue diseases (CTDs). METHODS: 189 patients with orders for anti-ENA were analyzed. Three common methods were used: DID, ELISA, and HA. Sensitivity, specificity, PPV, NPV, and LR were calculated using CTDs as the reference standard. RESULTS: 69.3% of the patients had a CTD and 32.8% had SLE. Sensitivity and specificity, respectively, according to the technique were: ELISA (50.0% - 78.9%); DID (31.3% - 89.5%); HA (40.9% - 87.7%). PPV were: 88.5% (HA), 87.2% (DID) and 84.6% (ELISA), and NPV were: 40.5% (ELISA), 39.1% (HA) and 36.2% (DID). CONCLUSIONS: Based on the very similar predictive test values, we believe that, at least in a moderate to high pretest probability, in our methodological scenario, there are no significant differences in the interpretation of test results when using ELISA, HA, and DID for anti-ENA detection.


Assuntos
Anticorpos Antinucleares/sangue , Doenças do Tecido Conjuntivo/sangue , Ensaio de Imunoadsorção Enzimática , Testes de Hemaglutinação , Imunodifusão , Adulto , Especificidade de Anticorpos , Autoantígenos/imunologia , Doenças do Tecido Conjuntivo/imunologia , DNA Topoisomerases Tipo I , Dermatomiosite/sangue , Dermatomiosite/imunologia , Feminino , Humanos , Funções Verossimilhança , Lúpus Eritematoso Sistêmico/sangue , Lúpus Eritematoso Sistêmico/imunologia , Masculino , Pessoa de Meia-Idade , Proteínas Nucleares/imunologia , Valor Preditivo dos Testes , Estudos Prospectivos , Ribonucleoproteínas/imunologia , Sensibilidade e Especificidade , Antígeno SS-B
10.
Rheumatol Int ; 30(3): 369-73, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19504098

RESUMO

Several genetic factors seem to be involved in the pathogenesis of rheumatoid arthritis (RA). The aim of this study was to analyze whether functional polymorphisms in the promoter region of the MMP-1, -3 and -9 genes were associated with RA. The study population comprises 110 RA patients and 100 healthy controls. The -1607 1G/2G MMP-1, -1171 5A/6A MMP-3, and -1562 C/T MMP-9 polymorphisms were analyzed. The frequency of the 5A allele of MMP-3 gene was significantly higher in the controls when compared with the RA patients (0.45 vs. 0.32, P < 0.01). No significant differences were observed in the allele frequencies for the MMP-1 and -9 polymorphisms between RA patients and controls. Individuals carrying MMP-3 5A allele have significant higher frequency of extra-articular manifestations and rheumatoid nodules than individuals homozygous for 6A allele (P < 0.05). The results presented in this study provide evidence of an association between the MMP-3 gene polymorphism and RA.


Assuntos
Artrite Reumatoide/enzimologia , Artrite Reumatoide/genética , Predisposição Genética para Doença/genética , Metaloproteinases da Matriz/genética , Polimorfismo Genético/genética , Adulto , Idoso , Artrite Reumatoide/fisiopatologia , Análise Mutacional de DNA , Feminino , Frequência do Gene/genética , Marcadores Genéticos/genética , Testes Genéticos , Genótipo , Homozigoto , Humanos , Articulações/enzimologia , Articulações/patologia , Articulações/fisiopatologia , Masculino , Metaloproteinase 1 da Matriz/genética , Metaloproteinase 3 da Matriz/genética , Metaloproteinase 9 da Matriz/genética , Pessoa de Meia-Idade , Nódulo Reumatoide/enzimologia , Nódulo Reumatoide/genética , Nódulo Reumatoide/fisiopatologia
11.
Autoimmunity ; 53(2): 65-70, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31876207

RESUMO

The aim of the present study was to evaluate the impact of SEMA4A genetic variants on expression of sema4A protein and its relation to autoimmunity development in Systemic Lupus Erythematosus and Rheumatoid Arthritis patients. A total of 541 SLE patients, 390 RA patients and 607 healthy individuals were genotyped. We also assessed SEMA4A mRNA expression from whole blood cells and the in vitro protein production from resting and activated T lymphocytes as well as mature dendritic cells from healthy individuals stratified according to their genotypes for SLE/RA associated SEMA4A variants. Our results showed that T/T genotype for rs3738581 SNP is associated with both RA and SLE development (p = .000053, OR = 2.35; p = .0019, OR = 2.07, respectively; statistical power = 100%) and also to an increased in vitro sema4A production in active T lymphocytes. Our findings are indicative of a T cell-specific upregulation of sema4A in the presence of T/T genotype, being a risk factor for SLE and RA.


Assuntos
Artrite Reumatoide/genética , Autoimunidade/genética , Lúpus Eritematoso Sistêmico/genética , Semaforinas/genética , Linfócitos T/imunologia , Adulto , Idoso , Artrite Reumatoide/sangue , Artrite Reumatoide/imunologia , Brasil , Estudos de Casos e Controles , Estudos de Coortes , Células Dendríticas/imunologia , Células Dendríticas/metabolismo , Feminino , Predisposição Genética para Doença , Humanos , Lúpus Eritematoso Sistêmico/sangue , Lúpus Eritematoso Sistêmico/imunologia , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único , RNA Mensageiro/análise , RNA Mensageiro/metabolismo , Semaforinas/metabolismo , Linfócitos T/metabolismo , Regulação para Cima
12.
Clin Rheumatol ; 38(3): 961-968, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30511296

RESUMO

The treat-to-target strategy (T2T) was associated with better outcomes in psoriatic arthritis (PsA) compared to standard care in clinical trials. This study aimed to analyze factors precluding treatment optimization in a T2T strategy conducted in a real-world cohort of PsA patients. A retrospective cross-sectional study nested in a cohort was conducted. Medical records of patients ≥ 18 years old, fulfilling CASPAR criteria and with at least one visit in the PsA clinic, were reviewed. Demographic data, current medication, and minimal disease activity (MDA) criteria were recorded. Reasons for the non-escalation of therapy in patients who were not classified as MDA were reported as absolute and relative frequencies. In the 8-month period, 131 visits (corresponding to 74 patients) were conducted. The MDA criteria were available in 113 visits (86.3%) and patients were classified as MDA in 31.0% of the visits (N = 35/113). Although in 69.0% of the visits patients were not in MDA, (N = 78/113), therapy was adjusted in only 42.3% (N = 33/78). Reasons precluding treatment escalation in non-MDA subjects were physician's impression of remission (57.7%, N = 26), non-adherence to previous prescription (17.8%, N = 8), restricted access to drugs (17.8%, N = 8), adverse events (11.1%, N = 5), poor understanding of medication instructions (6.7%, N = 3), patient's refusal to escalate therapy (4.4%, N = 2), and recent change in therapy (2.2%, N = 1). Discordance between the physician's clinical evaluation and the MDA criteria, non-adherence to prescription, and poor access to drugs were the main factors precluding escalation of therapy in a T2T strategy in a real-world PsA cohort.


Assuntos
Antirreumáticos/uso terapêutico , Artrite Psoriásica/tratamento farmacológico , Acessibilidade aos Serviços de Saúde , Adesão à Medicação , Idoso , Artrite Psoriásica/fisiopatologia , Estudos de Coortes , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Planejamento de Assistência ao Paciente , Médicos , Indução de Remissão , Estudos Retrospectivos , Índice de Gravidade de Doença
13.
Clin Rheumatol ; 27(5): 627-35, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-17989918

RESUMO

We evaluated the efficacy of acupuncture as a useful adjuvant treatment in the management of rheumatoid arthritis (RA). A pilot, randomized, double-blind, and controlled clinical trial was conducted. Forty RA patients with active disease despite stable therapy for at least the preceding 1 month were randomized to receive a standard protocol of acupuncture (AC) or superficial acupuncture at non-acupuncture points (controlAC) for 9 weeks. The primary outcome was achievement of 20% improvement according to the American College of Rheumatology (ACR) 20 criteria after five and ten treatment sessions and after 1 month of follow-up. Secondary measures included Disease Assessment Scale (DAS), tender and swollen joint count, morning stiffness, Health Assessment Questionnaire (HAQ), visual analogue scale (VAS) of pain, physician global assessment of activity disease, physician and patient global assessment of treatment, and inflammatory markers (erythrocyte sedimentation rate and C-reactive protein). There was not significant difference between the groups regarding the number of patients that reached ACR20 at the end of the treatment (p=0.479). However, after 1 month of follow-up, there was a trend in favor of the AC group, with p=0.068. Compared with the controlAC, the AC group also demonstrated significant improvement in the patient and physician global assessment of treatment and physician global assessment of disease activity, but there was no difference on other clinical and laboratorial measures. On the other hand, only the AC patients had within group improvement on the variables DAS, HAQ, morning stiffness, patient and physician global assessment of treatment, and physician global assessment of disease activity in comparison to baseline visit. Despite the improvement of some studied variables, there was no significant difference in the proportion of patients that reached ACR20 between the AC and controlAC groups. This negative result can be related to the small sample size, selection of patients, type of acupuncture protocol applied, and difficulties in establishing an innocuous and trustworthy placebo group to studies involving acupuncture.


Assuntos
Terapia por Acupuntura , Artrite Reumatoide/terapia , Pontos de Acupuntura , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Fatores de Tempo , Resultado do Tratamento
14.
Clin Rheumatol ; 27(4): 413-9, 2008 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-18214570

RESUMO

Susceptibility to systemic lupus erythematosus (SLE) is associated with genetic, hormonal, immunological, and environmental factors. Many genes have been related with the appearance of SLE, including several loci that code different complement components and their receptors. Some genetic deficiencies of complement molecules are strongly associated with SLE, probably because these deficiencies could cause decreased clearance of apoptotic cell material. As a consequence of the apoptotic material accumulation, high levels of autoantigens can be presented inappropriately to the immune system in an inflammatory context, resulting in an imbalance on the mechanisms of immunological tolerance, immune system activation, and autoantibody production. Recent studies proposed a role to the mannose-binding lectin (MBL) in the SLE physiopathogenesis. This protein activates the complement system, and the presence of several polymorphisms at the promoter and coding regions of the MBL-2 gene determines alterations at the plasma levels of MBL. Some of these polymorphisms have been associated with SLE susceptibility, as well as with clinical and laboratory typical features of this disease, cardiovascular events, and infections. Besides, it has been described that the presence of anti-MBL autoantibodies in sera of SLE patients can influence MBL plasma levels and its functional activity.


Assuntos
Lúpus Eritematoso Sistêmico/etiologia , Lectina de Ligação a Manose/fisiologia , Autoanticorpos/sangue , Proteínas do Sistema Complemento , Predisposição Genética para Doença/genética , Humanos , Lúpus Eritematoso Sistêmico/genética , Lúpus Eritematoso Sistêmico/imunologia , Lectina de Ligação a Manose/genética , Lectina de Ligação a Manose/imunologia , Polimorfismo Genético/genética , Fatores de Risco
15.
Rev Assoc Med Bras (1992) ; 53(5): 465-70, 2007.
Artigo em Português | MEDLINE | ID: mdl-17952359

RESUMO

Rheumatoid arthritis is a systemic inflammatory autoimmune disease characterized by symmetric, erosive and chronic synovitis, especially of minor joints. It is associated with increased prevalence of cardiovascular disease and with high mortality. This occurs because of an accelerated atherogenic process, explained by traditional cardiovascular risk factors such as smoking, hypercholesterolemia, age, diabetes mellitus and systemic arterial hypertension. High levels of hemosedimentation velocity and C-reactive protein are directly correlated with increased cardiovascular events. Pro-inflammatory cytokines contribute with endothelial dysfunction, insulin resistance, dyslipidemia, prothrombotic effects and oxidative stress that are at the basis of the atherogenic process. Recent information about atherosclerosis in rheumatoid arthritis allows for identification of the risk factors involved in atherosclerosis that can be best controlled. This could result in a reduced manifestation of the process and its cutback, with consequent decrease of mortality and morbidity related to rheumatoid arthritis.


Assuntos
Artrite Reumatoide/etiologia , Doença da Artéria Coronariana/etiologia , Artrite Reumatoide/fisiopatologia , Doença da Artéria Coronariana/fisiopatologia , Humanos , Fatores de Risco
16.
Clin Rheumatol ; 36(9): 2005-2010, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28653264

RESUMO

Systemic lupus erythematosus (SLE) treatments progress over the years. However, the mortality remains higher than in the general population. Few studies have examined SLE patients' survival in Brazil. This study aims to identify the main characteristics and risk factors to predict mortality and recognize the main causes of death in Brazilian patients with SLE. We retrospectively assessed clinical, demographic, and serological characteristics from 600 patients followed since 2001 in SLE outpatient clinic from Hospital de Clínicas de Porto Alegre. Risk factors for mortality were examined by univariate and multivariate Cox proportional hazards regression analyses. A p < 0.05 was considered significant. There were 527 survivors (87.83%). The main causes of death were cardiovascular disease (17%), infection (17%), and infection and SLE activity (17%). Risk factors for death were age at diagnosis (HR 1.065, CI 95% 1.039-10.092), SLICC damage index (HR 1.299, CI 95% 1.076-1569), antiphospholip syndrome (HR 3.021, CI 95% 1.307-6.985), and metilprednisolone pulse (HR 2.628, CI 95% 1.283-5.383). Antimalarials was a protective factor for death (HR 0.191, CI 95% 0.064-0.570). Cardiovascular disease, infection, and SLE activity associated with infection were the main known causes of deaths in our SLE patients. Secondary antiphospolipid syndrome, highest score in SLICC damage index, advanced age at diagnosis, and high dose of corticosteroids were risk factors for mortality. Antimalarials was an important protective factor.


Assuntos
Doenças Cardiovasculares/epidemiologia , Infecções/epidemiologia , Lúpus Eritematoso Sistêmico/complicações , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Lúpus Eritematoso Sistêmico/mortalidade , Corticosteroides/efeitos adversos , Corticosteroides/uso terapêutico , Adulto , Antimaláricos/uso terapêutico , Síndrome Antifosfolipídica/epidemiologia , Síndrome Antifosfolipídica/mortalidade , Brasil/epidemiologia , Doenças Cardiovasculares/mortalidade , Feminino , Humanos , Infecções/mortalidade , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Estudos Retrospectivos , Fatores de Risco , Índice de Gravidade de Doença , Análise de Sobrevida , Centros de Atenção Terciária , Adulto Jovem
17.
Clin Rheumatol ; 36(1): 89-95, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27858177

RESUMO

The present study aims to evaluate differences in clinical and laboratory manifestations and medication use in the different ages of disease onset in patients with systemic lupus erythematosus (SLE). This cross-sectional study consisted of 598 SLE patients (550 female and 48 male), who attended the Rheumatology Clinic of the Hospital de Clínicas de Porto Alegre between 2003 and 2015. Demographic, clinical and laboratory data were collected. The patients were classified into three groups according to their ages at disease diagnosis. Mean age of diagnosis was 33.6 ± 14.3 years, and the median (25th-75th percentile) disease duration was 13 (7-20) years. Among the patients studied, 419 (70%) were adult-onset (aSLE), 90 (14.8%) were late-onset (lSLE) and 89 (14.8%) were childhood-onset (cSLE). The female to male ratio was higher in aSLE (18:1) compared to the other groups (p = 0.001). Arthritis was predominantly found in aSLE (78.5%) when compared with lSLE (57.7%) (p < 0.001). Nephritis was more common in cSLE (60.6%) than in lSLE (26.6%) (p < 0.001). Median (25th-75th percentile) of SLE disease activity index (SLEDAI) was higher in the cSLE group [2 (0-5)] when compared to the lSLE group [0 (0-4)] (p = 0.045). Childhood-onset SLE showed a more severe disease due to the higher incidence of nephritis and needed a more aggressive treatment with immunosuppressive drugs.


Assuntos
Idade de Início , Lúpus Eritematoso Sistêmico/sangue , Lúpus Eritematoso Sistêmico/diagnóstico , Adolescente , Adulto , Antirreumáticos/uso terapêutico , Criança , Estudos Transversais , Feminino , Humanos , Imunossupressores/uso terapêutico , Incidência , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Nefrite/fisiopatologia , Prevalência , Adulto Jovem
18.
Rev Bras Reumatol Engl Ed ; 57(5): 403-411, 2017.
Artigo em Inglês, Português | MEDLINE | ID: mdl-29037312

RESUMO

OBJECTIVE: To compare DMARD use in patients with and without FM over time, including overtreatment and undertreatment rates in both groups. METHODS: A prospective cohort study with patients attending an RA outpatient clinic was conducted. Participants were consecutively recruited between March 2006 and June 2007 and were followed through December 2013. Data on DMARD use (prevalences, doses and escalation rates), DAS28, HAQ and radiographic progression were compared among RA patients with FM and without FM. Mistreatment clinical scenarios were allegedly identified and compared between groups. RESULTS: 256 RA patients (32 with FM) were followed for 6.2±2.0 (mean±SD) years comprising 2986 visits. At baseline, RA duration was 11.1±7.4 years. DAS28 and HAQ were greater in RA with FM group, and were closer to RA without FM group towards the end. RA patients with FM used higher doses of tricyclic antidepressants, leflunomide and prednisone, and lower doses of methotrexate. When compared to RA patients without FM, participants with RA and FM used more often tricyclic antidepressants, leflunomide, prednisone, continuous analgesics and less often methotrexate. Groups presented similar 7-year biologic-free survival, and radiographic progression-free survival in Cox regression. RA patients with FM had greater proportions of visits in mistreatment scenarios when compared to RA patients without FM (28.4 vs. 19.8%, p<0.001). CONCLUSIONS: RA patients with FM used more leflunomide and prednisone, and RA mistreatment was more frequent in FM patients. Certainly, RA patients with FM will benefit from a personalized T2T strategy, including ultrasound (when suitable) and proper FM treatment.


Assuntos
Antirreumáticos/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Tomada de Decisão Clínica , Fibromialgia/complicações , Prescrição Inadequada/estatística & dados numéricos , Padrões de Prática Médica/estatística & dados numéricos , Adulto , Idoso , Artrite Reumatoide/complicações , Brasil , Estudos de Casos e Controles , Progressão da Doença , Esquema de Medicação , Feminino , Seguimentos , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Estudos Prospectivos , Índice de Gravidade de Doença
19.
Rev Bras Reumatol ; 2016 Dec 18.
Artigo em Inglês, Português | MEDLINE | ID: mdl-28040332

RESUMO

OBJECTIVE: To compare DMARD use in patients with and without FM over time, including overtreatment and undertreatment rates in both groups. METHODS: A prospective cohort study with patients attending an RA outpatient clinic was conducted. Participants were consecutively recruited between March 2006 and June 2007 and were followed through December 2013. Data on DMARD use (prevalences, doses and escalation rates), DAS28, HAQ and radiographic progression were compared among RA patients with FM and without FM. Mistreatment clinical scenarios were allegedly identified and compared between groups. RESULTS: 256 RA patients (32 with FM) were followed for 6.2±2.0 (mean±SD) years comprising 2,986 visits. At baseline, RA duration was 11.1±7.4 years. DAS28 and HAQ were greater in RA with FM group, and were closer to RA without FM group towards the end. RA patients with FM used higher doses of tricyclic antidepressants, leflunomide and prednisone, and lower doses of methotrexate. When compared to RA patients without FM, participants with RA and FM used more often tricyclic antidepressants, leflunomide, prednisone, continuous analgesics and less often methotrexate. Groups presented similar 7-year biologic-free survival, and radiographic progression-free survival in Cox regression. RA patients with FM had greater proportions of visits in mistreatment scenarios when compared to RA patients without FM (28.4 vs. 19.8%, p<0.001). CONCLUSIONS: RA patients with FM used more leflunomide and prednisone, and RA mistreatment was more frequent in FM patients. Certainly, RA patients with FM will benefit from a personalized T2T strategy, including ultrasound (when suitable) and proper FM treatment.

20.
Clin Imaging ; 29(3): 215-21, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-15855069

RESUMO

Systemic lupus erythematosus (SLE) patients frequently present with neuropsychiatric symptoms. We conducted an imaging study with magnetic resonance (MR) imaging, computed tomography (CT), and single photon emission CT (SPECT) in 23 patients with SLE, 13 with major neuropsychiatric symptoms (NPSLE) and 10 without (non-NPSLE). The most frequent brain imaging findings were seen with MR imaging and were more prevalent in NPSLE: high signal intensity focal white matter lesions, infarcts in the cortex and pons, and basal ganglia lesions.


Assuntos
Encéfalo/patologia , Lúpus Eritematoso Sistêmico/diagnóstico , Vasculite Associada ao Lúpus do Sistema Nervoso Central/diagnóstico , Imageamento por Ressonância Magnética , Tomografia Computadorizada de Emissão de Fóton Único , Tomografia Computadorizada por Raios X , Adulto , Encéfalo/diagnóstico por imagem , Feminino , Humanos , Lúpus Eritematoso Sistêmico/diagnóstico por imagem , Lúpus Eritematoso Sistêmico/patologia , Vasculite Associada ao Lúpus do Sistema Nervoso Central/diagnóstico por imagem , Vasculite Associada ao Lúpus do Sistema Nervoso Central/patologia , Masculino , Pessoa de Meia-Idade
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