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1.
Lupus ; 31(3): 279-286, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-35104178

RESUMEN

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.


Asunto(s)
Lupus Eritematoso Sistémico , Lectina de Unión a Manosa , Estudios de Seguimiento , Predisposición Genética a la Enfermedad , Genotipo , Haplotipos/genética , Humanos , Lupus Eritematoso Sistémico/epidemiología , Lupus Eritematoso Sistémico/genética , Lectina de Unión a Manosa/genética , Polimorfismo Genético
2.
Ann Hum Genet ; 80(1): 1-6, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26464189

RESUMEN

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.


Asunto(s)
Artritis Reumatoide/genética , Lectinas/genética , Lupus Eritematoso Sistémico/genética , Polimorfismo de Nucleótido Simple , Brasil , Estudios de Casos y Controles , Estudios de Asociación Genética , Genotipo , Humanos , Fenotipo , Ficolinas
3.
Mol Biol Rep ; 43(1): 41-51, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26686848

RESUMEN

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.


Asunto(s)
Artritis Reumatoide/genética , Receptores de Calcitriol/genética , Alelos , Artritis Reumatoide/sangre , Brasil , Estudios de Casos y Controles , Femenino , Predisposición Genética a la Enfermedad , Humanos , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple , Receptores de Calcitriol/sangre
4.
Ann Rheum Dis ; 74(6): 1019-23, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24525909

RESUMEN

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.


Asunto(s)
Progresión de la Enfermedad , Lupus Eritematoso Sistémico/fisiopatología , Adolescente , Corticoesteroides/uso terapéutico , Adulto , Antimaláricos/uso terapéutico , Población Negra , Estudios de Casos y Controles , Estudios de Cohortes , Estudios Cruzados , Femenino , Humanos , Inmunosupresores/uso terapéutico , Indígenas Sudamericanos , América Latina , Lupus Eritematoso Sistémico/tratamiento farmacológico , Masculino , Índice de Severidad de la Enfermedad , Factores de Tiempo , Población Blanca , Adulto Joven
5.
Mol Biol Rep ; 41(7): 4233-9, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24570024

RESUMEN

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.


Asunto(s)
Lupus Eritematoso Sistémico/genética , Polimorfismo de Nucleótido Simple , Regiones Promotoras Genéticas , Sirtuina 1/genética , Adulto , Alelos , Estudios de Casos y Controles , Femenino , Frecuencia de los Genes , Genotipo , Heterocigoto , Homocigoto , Humanos , Desequilibrio de Ligamiento , Lupus Eritematoso Sistémico/patología , Masculino , Persona de Mediana Edad , Índice de Severidad de la Enfermedad
6.
Mol Biol Rep ; 41(9): 6167-79, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24981927

RESUMEN

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.


Asunto(s)
Citocromo P-450 CYP1A1/genética , Citocromo P-450 CYP2E1/genética , Glutatión Transferasa/genética , Lupus Eritematoso Sistémico/genética , Polimorfismo Genético , Adulto , Población Negra/genética , Brasil , Estudios de Casos y Controles , Femenino , Frecuencia de los Genes , Predisposición Genética a la Enfermedad , Genotipo , Humanos , Lupus Eritematoso Sistémico/diagnóstico , Masculino , Persona de Mediana Edad , Reacción en Cadena de la Polimerasa , Polimorfismo de Longitud del Fragmento de Restricción , Especies Reactivas de Oxígeno/metabolismo , Factores de Riesgo , Población Blanca/genética , Xenobióticos
7.
Cytokine ; 60(2): 473-7, 2012 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-22763041

RESUMEN

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.


Asunto(s)
Predisposición Genética a la Enfermedad , Interleucina-8/genética , Polimorfismo de Nucleótido Simple/genética , Receptores de Interleucina-8B/genética , Esclerodermia Sistémica/genética , Estudios de Casos y Controles , Frecuencia de los Genes/genética , Humanos
8.
Clin Dev Immunol ; 2012: 725684, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22761633

RESUMEN

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.


Asunto(s)
Antígenos CD/metabolismo , Células Sanguíneas/metabolismo , Proteínas del Sistema Complemento/metabolismo , Lupus Eritematoso Sistémico/metabolismo , Adulto , Células Sanguíneas/inmunología , Antígenos CD55/metabolismo , Antígenos CD59/metabolismo , Proteínas del Sistema Complemento/inmunología , Eritrocitos/metabolismo , Femenino , Humanos , Inmunofenotipificación , Lupus Eritematoso Sistémico/inmunología , Masculino , Proteína Cofactora de Membrana/metabolismo , Persona de Mediana Edad , Monocitos/metabolismo , Neutrófilos/metabolismo , Receptores de Complemento 3b/metabolismo
9.
Clin Lab ; 57(7-8): 625-9, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21888028

RESUMEN

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.


Asunto(s)
Anticuerpos Antinucleares/sangre , Enfermedades del Tejido Conjuntivo/sangre , Ensayo de Inmunoadsorción Enzimática , Pruebas de Hemaglutinación , Inmunodifusión , Adulto , Especificidad de Anticuerpos , Autoantígenos/inmunología , Enfermedades del Tejido Conjuntivo/inmunología , ADN-Topoisomerasas de Tipo I , Dermatomiositis/sangre , Dermatomiositis/inmunología , Femenino , Humanos , Funciones de Verosimilitud , Lupus Eritematoso Sistémico/sangre , Lupus Eritematoso Sistémico/inmunología , Masculino , Persona de Mediana Edad , Proteínas Nucleares/inmunología , Valor Predictivo de las Pruebas , Estudios Prospectivos , Ribonucleoproteínas/inmunología , Sensibilidad y Especificidad , Antígeno SS-B
10.
Rheumatol Int ; 30(3): 369-73, 2010 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19504098

RESUMEN

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.


Asunto(s)
Artritis Reumatoide/enzimología , Artritis Reumatoide/genética , Predisposición Genética a la Enfermedad/genética , Metaloproteinasas de la Matriz/genética , Polimorfismo Genético/genética , Adulto , Anciano , Artritis Reumatoide/fisiopatología , Análisis Mutacional de ADN , Femenino , Frecuencia de los Genes/genética , Marcadores Genéticos/genética , Pruebas Genéticas , Genotipo , Homocigoto , Humanos , Articulaciones/enzimología , Articulaciones/patología , Articulaciones/fisiopatología , Masculino , Metaloproteinasa 1 de la Matriz/genética , Metaloproteinasa 3 de la Matriz/genética , Metaloproteinasa 9 de la Matriz/genética , Persona de Mediana Edad , Nódulo Reumatoide/enzimología , Nódulo Reumatoide/genética , Nódulo Reumatoide/fisiopatología
11.
Autoimmunity ; 53(2): 65-70, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31876207

RESUMEN

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.


Asunto(s)
Artritis Reumatoide/genética , Autoinmunidad/genética , Lupus Eritematoso Sistémico/genética , Semaforinas/genética , Linfocitos T/inmunología , Adulto , Anciano , Artritis Reumatoide/sangre , Artritis Reumatoide/inmunología , Brasil , Estudios de Casos y Controles , Estudios de Cohortes , Células Dendríticas/inmunología , Células Dendríticas/metabolismo , Femenino , Predisposición Genética a la Enfermedad , Humanos , Lupus Eritematoso Sistémico/sangre , Lupus Eritematoso Sistémico/inmunología , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple , ARN Mensajero/análisis , ARN Mensajero/metabolismo , Semaforinas/metabolismo , Linfocitos T/metabolismo , Regulación hacia Arriba
12.
Clin Rheumatol ; 38(3): 961-968, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30511296

RESUMEN

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.


Asunto(s)
Antirreumáticos/uso terapéutico , Artritis Psoriásica/tratamiento farmacológico , Accesibilidad a los Servicios de Salud , Cumplimiento de la Medicación , Anciano , Artritis Psoriásica/fisiopatología , Estudios de Cohortes , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Planificación de Atención al Paciente , Médicos , Inducción de Remisión , Estudios Retrospectivos , Índice de Severidad de la Enfermedad
13.
Clin Rheumatol ; 27(5): 627-35, 2008 May.
Artículo en Inglés | MEDLINE | ID: mdl-17989918

RESUMEN

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.


Asunto(s)
Terapia por Acupuntura , Artritis Reumatoide/terapia , Puntos de Acupuntura , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Proyectos Piloto , Factores de Tiempo , Resultado del Tratamiento
14.
Clin Rheumatol ; 27(4): 413-9, 2008 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-18214570

RESUMEN

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.


Asunto(s)
Lupus Eritematoso Sistémico/etiología , Lectina de Unión a Manosa/fisiología , Autoanticuerpos/sangre , Proteínas del Sistema Complemento , Predisposición Genética a la Enfermedad/genética , Humanos , Lupus Eritematoso Sistémico/genética , Lupus Eritematoso Sistémico/inmunología , Lectina de Unión a Manosa/genética , Lectina de Unión a Manosa/inmunología , Polimorfismo Genético/genética , Factores de Riesgo
15.
Rev Assoc Med Bras (1992) ; 53(5): 465-70, 2007.
Artículo en Portugués | MEDLINE | ID: mdl-17952359

RESUMEN

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.


Asunto(s)
Artritis Reumatoide/etiología , Enfermedad de la Arteria Coronaria/etiología , Artritis Reumatoide/fisiopatología , Enfermedad de la Arteria Coronaria/fisiopatología , Humanos , Factores de Riesgo
16.
Clin Rheumatol ; 36(9): 2005-2010, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28653264

RESUMEN

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.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Infecciones/epidemiología , Lupus Eritematoso Sistémico/complicaciones , Lupus Eritematoso Sistémico/tratamiento farmacológico , Lupus Eritematoso Sistémico/mortalidad , Corticoesteroides/efectos adversos , Corticoesteroides/uso terapéutico , Adulto , Antimaláricos/uso terapéutico , Síndrome Antifosfolípido/epidemiología , Síndrome Antifosfolípido/mortalidad , Brasil/epidemiología , Enfermedades Cardiovasculares/mortalidad , Femenino , Humanos , Infecciones/mortalidad , Masculino , Persona de Mediana Edad , Análisis Multivariante , Estudios Retrospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad , Análisis de Supervivencia , Centros de Atención Terciaria , Adulto Joven
17.
Clin Rheumatol ; 36(1): 89-95, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27858177

RESUMEN

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.


Asunto(s)
Edad de Inicio , Lupus Eritematoso Sistémico/sangre , Lupus Eritematoso Sistémico/diagnóstico , Adolescente , Adulto , Antirreumáticos/uso terapéutico , Niño , Estudios Transversales , Femenino , Humanos , Inmunosupresores/uso terapéutico , Incidencia , Lupus Eritematoso Sistémico/tratamiento farmacológico , Masculino , Persona de Mediana Edad , Nefritis/fisiopatología , Prevalencia , Adulto Joven
18.
Rev Bras Reumatol Engl Ed ; 57(5): 403-411, 2017.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-29037312

RESUMEN

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.


Asunto(s)
Antirreumáticos/uso terapéutico , Artritis Reumatoide/tratamiento farmacológico , Toma de Decisiones Clínicas , Fibromialgia/complicaciones , Prescripción Inadecuada/estadística & datos numéricos , Pautas de la Práctica en Medicina/estadística & datos numéricos , Adulto , Anciano , Artritis Reumatoide/complicaciones , Brasil , Estudios de Casos y Controles , Progresión de la Enfermedad , Esquema de Medicación , Femenino , Estudios de Seguimiento , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Índice de Severidad de la Enfermedad
19.
Rev Bras Reumatol ; 2016 Dec 18.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-28040332

RESUMEN

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.
Artículo en Inglés | MEDLINE | ID: mdl-15855069

RESUMEN

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.


Asunto(s)
Encéfalo/patología , Lupus Eritematoso Sistémico/diagnóstico , Vasculitis por Lupus del Sistema Nervioso Central/diagnóstico , Imagen por Resonancia Magnética , Tomografía Computarizada de Emisión de Fotón Único , Tomografía Computarizada por Rayos X , Adulto , Encéfalo/diagnóstico por imagen , Femenino , Humanos , Lupus Eritematoso Sistémico/diagnóstico por imagen , Lupus Eritematoso Sistémico/patología , Vasculitis por Lupus del Sistema Nervioso Central/diagnóstico por imagen , Vasculitis por Lupus del Sistema Nervioso Central/patología , Masculino , Persona de Mediana Edad
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