Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 45
Filtrar
1.
Sci Rep ; 9(1): 2777, 2019 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-30808881

RESUMO

Behçet's disease (BD) is an immune-mediated systemic disorder with a well-established genetic base. In a previous study, using a next generation sequencing approach, we found many rare variants and some functional polymorphisms in genes related to autoinflammatory syndromes (AID): CECR1, MEFV, MVK, NLRP3, NOD2, PSTPIP1 and TNFRSF1A in our BD cohort. Our strategy did not allow us to establish either number of patients with variants, proportion of individuals accumulating them or relationship with other genetic factors. With the goal to answer these questions, the individual samples were sequenced. Additionally, three functional polymorphisms: NLRP3 p.Gln703Lys, NOD2 p.Arg702Trp and p.Val955Ile were genotyped using TaqMan assays. A total of 98 patients (27.6%) carried at least one rare variant and 13 of them (3.7%) accumulated two or three. Functional regression model analysis suggests epistatic interaction between B51 and MEFV (P = 0.003). A suggestive protective association of the minor allele of NOD2 p.Arg702Trp (P = 0.01) was found in both, B51 positive and negative individuals. Therefore, a high percentage of patients with BD have rare variants in AID genes. Our results suggest that the association of MEFV with BD could be modulated by the HLA molecules; whereas the protective effect of NOD2 p.Arg702Trp would be independent of HLA.

2.
Clin Exp Rheumatol ; 35 Suppl 106(4): 89-97, 2017 Sep-Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28980905

RESUMO

OBJECTIVES: The low overall prevalence of systemic sclerosis (SSc) and the low proportion of male patients have resulted in a scarcity of studies assessing sex differences in Ssc patients, and contradictory results have often been show among those studies that have been performed. METHODS: A prospective study was conducted with the Spanish RESCLE register to analyse the influence of gender on survival of SSc patients. RESULTS: In total, 1506 SSc patients (1341 women, 165 men) were recruited from 21 centres. Older age at onset (OR 1.02), shorter time from onset to diagnosis (OR 0.96), smoking (OR 2.57), interstitial lung disease (ILD) (OR 1.58), less predisposition to sicca syndrome and to antinuclear antibody positivity (OR 0.29 and 0.43, respectively), and higher compliance with the ACR 1980 criteria (OR 1.79) were independently associated with the male sex. During follow-up, 30.4% of men versus 14.6% of women died (p<0.001). Survival at 10 years from the onset of symptoms was 75.3% for men and 92.9% for women (p<0.001), and the difference remained after selecting only SSc-related deaths (85.6% vs. 96.1%, p<0.001). The mortality predictive factors were diffuse SSc (OR 2.26), ILD (OR 1.82), digital ulcers (OR 1.38), tendon friction rubs (OR 1.74), male sex (OR 1.53), increased age at onset (OR 1.13) and isolated PH (considering only deaths from diagnosis), both in the overall (OR 3.63) and female cohorts (OR 3.97). The same risk factors were observed in the male cohort, except for isolated PH and ILD. CONCLUSIONS: The present study confirms the existence of epidemiological, clinical, laboratory and prognostic gender differences in systemic sclerosis patients.


Assuntos
Escleroderma Sistêmico/mortalidade , Causas de Morte , Estudos de Coortes , Feminino , Humanos , Masculino , Prognóstico , Estudos Prospectivos , Escleroderma Sistêmico/complicações , Escleroderma Sistêmico/epidemiologia , Caracteres Sexuais
3.
Clin Exp Rheumatol ; 35 Suppl 106(4): 98-105, 2017 Sep-Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28980912

RESUMO

OBJECTIVES: To assess the clinical manifestations and prognosis of Spanish patients with systemic sclerosis (SSc) according to their immunological profile. METHODS: From the Spanish Scleroderma Study Group or RESCLE (Registro de ESCLErodermia as Spanish nomenclature) Registry we selected those patients in which anti-centromere (ACA), anti-topoisomerase I (ATA), and anti-RNA polymerase III (ARA) antibodies had been determined, and a single positivity for each SSc specific antibody was detected. Demographic, clinical, laboratory, and survival data were compared according to the serologic status of these antibodies. RESULTS: Overall, 209 SSc patients were included. In 128 (61%) patients ACA was the only positive antibody, 46 (22%) were only positive for ATA, and 35 (17%) for ARA. Of note, the three groups were mutually exclusive. In univariate analysis, patients with ACA presented more frequently limited cutaneous SSc (lcSSc) (p<0.001), whereas diffuse cutaneous SSc (dcSSc) was the most frequent subtype in patients with ATA (54%) and ARA (62%) (both p<0.001). Positive patients for ARA showed the highest prevalence of joint involvement (p<0.001) and those from ATA group had a higher prevalence of interstitial lung disease (ILD) (p<0.001). Scleroderma renal crisis was more frequent in the ARA group (p<0.001). In multivariate analysis, ACA were associated with female gender and were protective for dcSSc and ILD. ATA were found to be protective for lcSSc and they were independently associated with interstitial reticular pattern. ARA positivity was independently associated with dcSSc. We did not find differences in mortality between the three groups. CONCLUSIONS: In Spanish SSc patients, the presence of SSc specific antibodies conferred a distinctive clinical profile.


Assuntos
Autoanticorpos/análise , Escleroderma Sistêmico/imunologia , Adulto , Idoso , Centrômero/imunologia , Estudos de Coortes , DNA Topoisomerases Tipo I/imunologia , Feminino , Humanos , Doenças Pulmonares Intersticiais/epidemiologia , Masculino , Pessoa de Meia-Idade , Prognóstico , RNA Polimerase III/imunologia , Escleroderma Sistêmico/complicações , Escleroderma Sistêmico/mortalidade
4.
Sci Rep ; 7(1): 8453, 2017 Aug 16.
Artigo em Inglês | MEDLINE | ID: mdl-28814775

RESUMO

Behçet's disease (BD) is an immune-mediated systemic disorder with a well-established association with HLA class I and other genes. BD has clinical overlap with many autoinflammatory diseases (AIDs). The aim of this study was to investigate the role of rare variants in seven genes involved in AIDs: CECR1, MEFV, MVK, NLRP3, NOD2, PSTPIP1 and TNFRSF1A using a next generation sequencing (NGS) approach in 355 BD patients. To check global association of each gene, 4 tests: SKAT, CollapseBt, C(α) and weighted KBAC were used. Databases: 1000 Genomes Project Phase 3, Infevers, HGMD and ClinVar and algorithms: PolyPhen2 and SIFT were consulted to collect information of the 62 variants found. All the genes resulted associated using SKAT but only 3 (MVK, NOD2 and PSTPIP1) with C(α) and weighted KBAC. When all the genes are considered, 40 variants were associated to AIDs in clinical databases and 25 were predicted as pathogenic at least by one of the algorithms. Including only MVK, NOD2 and PSTPIP1, the associated to AIDs variants found in BD were 20 and the predicted as pathogenic, 12. The maxima contribution corresponds to NOD2. This study supports influence of rare variants in genes involved in AIDs in the pathogenesis of BD.

5.
Ann Rheum Dis ; 76(1): 286-294, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27193031

RESUMO

OBJECTIVES: During the last years, genome-wide association studies (GWASs) have identified a number of common genetic risk factors for rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE). However, the genetic overlap between these two immune-mediated diseases has not been thoroughly examined so far. The aim of the present study was to identify additional risk loci shared between RA and SLE. METHODS: We performed a large-scale meta-analysis of GWAS data from RA (3911 cases and 4083 controls) and SLE (2237 cases and 6315 controls). The top-associated polymorphisms in the discovery phase were selected for replication in additional datasets comprising 13 641 RA cases and 31 921 controls and 1957 patients with SLE and 4588 controls. RESULTS: The rs9603612 genetic variant, located nearby the COG6 gene, an established susceptibility locus for RA, reached genome-wide significance in the combined analysis including both discovery and replication sets (p value=2.95E-13). In silico expression quantitative trait locus analysis revealed that the associated polymorphism acts as a regulatory variant influencing COG6 expression. Moreover, protein-protein interaction and gene ontology enrichment analyses suggested the existence of overlap with specific biological processes, specially the type I interferon signalling pathway. Finally, genetic correlation and polygenic risk score analyses showed cross-phenotype associations between RA and SLE. CONCLUSIONS: In conclusion, we have identified a new risk locus shared between RA and SLE through a meta-analysis including GWAS datasets of both diseases. This study represents the first comprehensive large-scale analysis on the genetic overlap between these two complex disorders.


Assuntos
Proteínas Adaptadoras de Transporte Vesicular/genética , Artrite Reumatoide/genética , Lúpus Eritematoso Sistêmico/genética , Regulação da Expressão Gênica , Loci Gênicos , Pleiotropia Genética/genética , Predisposição Genética para Doença , Estudo de Associação Genômica Ampla , Humanos , Polimorfismo de Nucleotídeo Único , Domínios e Motivos de Interação entre Proteínas/genética
6.
Semin Arthritis Rheum ; 46(2): 225-31, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27139168

RESUMO

OBJECTIVE: To evaluate the clinical manifestations, long-term clinical outcome and longitudinal pulmonary function in a large cohort of Spanish patients with anti-Jo1 antibodies. METHODS: We retrospectively analyzed the clinical data and lung function parameters of 148 anti-Jo1 patients recruited from a multicentre registry including 18 Spanish hospitals. A composite endpoint was defined, comprising death due to respiratory failure directly related to antisynthetase syndrome (ASS), the need for long-term oxygen therapy or lung transplantation. RESULTS: Median follow-up was 78.3 months. Clinical presentation patterns at onset are as follows: isolated interstitial lung disease (ILD) (32.4%), isolated myositis (26.9%), concomitant myositis and ILD (22.8%), and isolated polyarthritis (17.9%). Myositis with ILD was the most frequent final clinical phenotype (67.6%). In most ASS patients, ILD was a non-progressive disease, tending to stabilize with therapy. The endpoint was reached in a significantly larger number of ILD patients with dyspnea at onset than those with paucisymptomatic or asymptomatic forms (p = 0.01). A steady FVC decrease was the hallmark of patients with end-stage lung disease. Estimated survival rates were 87.7% and 75.4% at 5 and 10 years, respectively. Cancer (p = 0.02) and advanced age at ASS diagnosis (p < 0.0001) were related to poorer survival. Mortality was significantly higher than in the general Spanish population, with a standardised mortality ratio (95% CI) of 4.03 (2.79-5.64). CONCLUSIONS: Anti-Jo1 ASS is a heterogeneous syndrome. ILD in ASS under immunosuppressive therapy is mainly a non-progressive disease. Dyspnea at ILD onset and a steady FVC decrease over time were related to a poorer respiratory prognosis.


Assuntos
Anticorpos Antinucleares/imunologia , Artrite/complicações , Doenças Pulmonares Intersticiais/complicações , Miosite/complicações , Adulto , Idoso , Artrite/imunologia , Feminino , Humanos , Doenças Pulmonares Intersticiais/imunologia , Masculino , Pessoa de Meia-Idade , Miosite/imunologia , Sistema de Registros , Estudos Retrospectivos
7.
Med. clín (Ed. impr.) ; 146(1): 1-7, ene. 2016. graf, tab
Artigo em Espanhol | IBECS | ID: ibc-147352

RESUMO

Fundamento y objetivo: La hipertensión arterial pulmonar (HAP) es causa importante de morbimortalidad en la esclerosis sistémica (ES). Su evolución es peor que en la HAP idiopática, pero el pronóstico mejora si se diagnostica precozmente. El objetivo de este trabajo es describir el resultado de un programa de cribado para el diagnóstico de hipertensión pulmonar (HP) desarrollado en una cohorte de pacientes españoles con ES. Pacientes y método: Se realizó cribado de HP mediante ecocardiografía-doppler transtorácica (EDTT) en 184 pacientes con ES. Los pacientes con valor de presión arterial pulmonar sistólica estimada por EDTT > 35 mmHg se evaluaron de forma protocolizada para establecer o no el diagnóstico de certeza de HP y su tipo. Resultados: Se diagnosticó HAP en 25 pacientes (13,6%). Los pacientes con ES difusa y limitada desarrollaron HAP en proporciones semejantes: 9 de 60 (15%) frente a 16 de 100 (16%). No se registraron casos entre pacientes con ES «sine esclerodermia» o «preesclerodermia» (p < 0,001). Los únicos datos clinicoepidemiológicos que caracterizaron a los pacientes con HAP fueron una edad más avanzada (edad media de 67 años para pacientes con HAP frente a 56 años sin HAP, p = 0,007), especialmente relacionada con la ES limitada, y una tendencia hacia un menor tiempo de evolución de la enfermedad de base (mediana de 8 años para pacientes con HAP frente a 10 años sin HAP, p = 0,73) y una mayor frecuencia de positividad para anticuerpos anticentrómero: 16 (64%) pacientes con HAP frente a 70 (48,3%) sin HAP (p = 0,19). Conclusiones: La prevalencia de HAP en ES resultó elevada y apoya la implantación de programas de cribado sistemático (AU)


Background and objective: Pulmonary arterial hypertension (PAH) is an important cause of morbimortality in systemic sclerosis (SSc). Evolution is worse than that of subjects with idiopathic PAH, but prognosis improves when PAH is diagnosed early. The aim of this research is to describe results of a screening program for diagnosis of pulmonary hypertension (PH) carried out in a cohort of Spanish patients with SSc. Patients and method: PH screening was performed by transthoracic doppler echocardiography (TTDE) in 184 patients with SSc. Patients with systolic pulmonary arterial pressure estimated by TTDE > 35 mmHg were evaluated per protocol to confirm diagnosis and type of PH. Results: PAH was diagnosed in 25 patients (13.6%). Patients with diffuse and limited SSc developed PAH in a similar degree, 9/60 (15%) vs. 16/100 (16%), with no cases among patients with SSc 'sine scleroderma' or 'pre-scleroderma' (P < .001). The only clinical or epidemiological data characterizing patients with PAH were older age (mean age 67 years for patients with PAH vs. 56 years for those without PAH, P = .007), limited SSc, a trend toward shorter evolution of the underlying disease (median 8 years for patients with PAH vs. 10 years for those without PAH, P = .73), and a higher frequency of positive anticentromere antibodies (16 patients [64%] with PAH vs. 70 (48,3%) without PAH, P = .19). Conclusions: Prevalence of PAH in SSc was high and supports the implementation of a regular screening program (AU)


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Hipertensão Pulmonar/complicações , Hipertensão Pulmonar/epidemiologia , Escleroderma Sistêmico/complicações , Escleroderma Sistêmico/epidemiologia , Diagnóstico Precoce , Hipertensão Pulmonar/mortalidade , Programas de Rastreamento/métodos , Estudos de Coortes , Indicadores de Morbimortalidade , Radiografia Torácica/métodos
8.
Med Clin (Barc) ; 146(1): 1-7, 2016 Jan 01.
Artigo em Espanhol | MEDLINE | ID: mdl-26169331

RESUMO

BACKGROUND AND OBJECTIVE: Pulmonary arterial hypertension (PAH) is an important cause of morbimortality in systemic sclerosis (SSc). Evolution is worse than that of subjects with idiopathic PAH, but prognosis improves when PAH is diagnosed early. The aim of this research is to describe results of a screening program for diagnosis of pulmonary hypertension (PH) carried out in a cohort of Spanish patients with SSc. PATIENTS AND METHOD: PH screening was performed by transthoracic doppler echocardiography (TTDE) in 184 patients with SSc. Patients with systolic pulmonary arterial pressure estimated by TTDE>35 mmHg were evaluated per protocol to confirm diagnosis and type of PH. RESULTS: PAH was diagnosed in 25 patients (13.6%). Patients with diffuse and limited SSc developed PAH in a similar degree, 9/60 (15%) vs. 16/100 (16%), with no cases among patients with SSc "sine scleroderma" or "pre-scleroderma" (P<.001). The only clinical or epidemiological data characterizing patients with PAH were older age (mean age 67 years for patients with PAH vs. 56 years for those without PAH, P=.007), limited SSc, a trend toward shorter evolution of the underlying disease (median 8 years for patients with PAH vs. 10 years for those without PAH, P=.73), and a higher frequency of positive anticentromere antibodies (16 patients [64%] with PAH vs. 70 (48,3%) without PAH, P=.19). CONCLUSIONS: Prevalence of PAH in SSc was high and supports the implementation of a regular screening program.


Assuntos
Ecocardiografia Doppler , Hipertensão Pulmonar/diagnóstico por imagem , Programas de Rastreamento , Escleroderma Sistêmico/complicações , Adulto , Idoso , Feminino , Humanos , Hipertensão Pulmonar/epidemiologia , Hipertensão Pulmonar/etiologia , Masculino , Pessoa de Meia-Idade , Prevalência , Espanha
9.
Clin Exp Rheumatol ; 33(6 Suppl 94): S117-22, 2015 Nov-Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26486764

RESUMO

OBJECTIVES: The aim of this study was to investigate the role of the TLR8, a mediator of innate inflammatory response, in susceptibility to two immune-mediated disorders characterised by dysregulation of the immune response, Crohn's and Behçet's diseases (CD and BD). METHODS: A total of 844 CD, 371 BD patients and 1385 controls were genotyped in 8 tag single nucleotide polymorphisms (tSNPs) in the locus TLR8 (chromosome X). All these tSNPs have a minor allele frequency greater than 0.05 in the Caucasian population. RESULTS: The rs2407992 and the rs5744067 were associated with susceptibility to BD and CD, respectively (OR=1.34, 95%CI=1.10-1.62, p=0.0025 and OR=0.82, 95%CI=0.68-0.99, p=0.045, respectively). Although after stratification by gender, statistically significant differences in the distribution of the aforementioned SNPs were only observed in the females groups (BD OR=1.31, 95%CI=1.06-1.64, p=0.012 and CD OR=0.84, 95%CI=0.72-0.98, p=0.044) the trend was similar among males. Since the rs5744067 and rs2407992 are located in the same linkage disequilibrium block, we performed a haplotypic analysis by combination of the tSNPs. One haplotype (H1) was identified as a protective factor in BD (OR=0.75, 95%CI=0.62-0.90, p=0.0027) and another (H2) as a protective factor in CD (OR=0.78, 95%CI=0.64-094, p=0.0102). No statistically significant differences in the mean of the levels of expression attributable to the haplotype variants were found in the in silico analysis performed. CONCLUSIONS: Our results suggest a relationship between the TLR8 and the susceptibility to CD and BD. Nevertheless, these differences could not be imputed to the levels of expression.


Assuntos
Síndrome de Behçet/genética , Doença de Crohn/genética , Haplótipos , Polimorfismo de Nucleotídeo Único , Receptor 8 Toll-Like/genética , Adulto , Síndrome de Behçet/diagnóstico , Síndrome de Behçet/imunologia , Estudos de Casos e Controles , Distribuição de Qui-Quadrado , Simulação por Computador , Doença de Crohn/diagnóstico , Doença de Crohn/imunologia , Feminino , Frequência do Gene , Estudos de Associação Genética , Predisposição Genética para Doença , Humanos , Desequilíbrio de Ligação , Masculino , Pessoa de Meia-Idade , Razão de Chances , Fenótipo , Fatores de Proteção , Medição de Risco , Fatores de Risco , Fatores Sexuais , Espanha , Receptor 8 Toll-Like/imunologia , Adulto Jovem
10.
Clin Exp Rheumatol ; 33(6 Suppl 94): S36-9, 2015 Nov-Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26005883

RESUMO

OBJECTIVES: Behçet's disease (BD) is an immune-mediated and complex disease which has been associated with HLA class I molecules although other genes such as IL23R and IL10 have also been involved in the susceptibility to BD. Recently, an association of variants of the JAK1 and TNFAIP3 genes with the disease has been reported in the Chinese Han population. The aim of the present work was to asses whether the association described in Asian populations is replicated in Europeans. METHODS: This study includes a total of 1155 Spanish subjects of European origin (372 BD and 783 unrelated healthy individuals). Patients were recruited from different hospitals and controls were collected in the same geographic regions and they matched with patients in age and gender. A total of five SNPs, two in the JAK1 gene: rs2780815 and rs310241 and the other three in the TNFAIP3: rs10499194, rs9494885 and rs610604, were included in this study. The genotyping of these SNPs was performed using a real time PCR system (TaqMan® SNP Genotyping Assays). RESULTS: No statistically significant differences were found when the patient and control groups were compared. The distribution of the risk alleles was similar in patients with and without eye manifestations and in patients with and without HLA-B*51. CONCLUSIONS: The association of variants of the genes JAK1 and the TNFAIP3 with BD which has been described in the Chinese population was not replicated in Europeans.


Assuntos
Síndrome de Behçet/genética , Proteínas de Ligação a DNA/genética , Grupo com Ancestrais do Continente Europeu/genética , Peptídeos e Proteínas de Sinalização Intracelular/genética , Janus Quinase 1/genética , Proteínas Nucleares/genética , Polimorfismo de Nucleotídeo Único , Adulto , Síndrome de Behçet/diagnóstico , Síndrome de Behçet/enzimologia , Síndrome de Behçet/etnologia , Estudos de Casos e Controles , Feminino , Frequência do Gene , Marcadores Genéticos , Predisposição Genética para Doença , Humanos , Masculino , Pessoa de Meia-Idade , Fenótipo , Fatores de Risco , Espanha/epidemiologia , Proteína 3 Induzida por Fator de Necrose Tumoral alfa
11.
J Rheumatol ; 42(4): 695-701, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25641891

RESUMO

OBJECTIVE: Behçet disease (BD) is a multifactorial disease in which infectious agents have been proposed as triggers in genetically predisposed individuals. The aim of our study was to investigate the role of innate immunity receptors, specifically the nucleic acid sensors, in susceptibility to BD. METHODS: Seventy-four tag single nucleotide polymorphisms (tSNP) selected in 9 candidate genes (DDX58, IFIH1, TLR3, TLR7, TLR8, AIM2, IFI16, ZBP1, and TLR9) were genotyped in 371 patients and 854 controls. Assays of mRNA expression and allele-specific transcript quantification (ASTQ) were performed in 110 and 50 controls, respectively. RESULTS: Patients and controls were genotyped and 2 tSNP (rs6940 in IFI16 and rs855873 in AIM2) were associated with BD. To confirm this association, these tSNP were genotyped in 850 additional controls, and the total cohort was randomly divided into 2 cohorts. The association of these 2 tSNP with the disease remained in both cohorts. One haplotype (rs6940T-rs855873G) was identified as a risk factor (OR 1.41, 95% CI 1.06-1.86, p = 0.015), and another (rs6940A-rs855873A) as a protective factor (OR 0.65, 95% CI 0.47-0.90, p = 0.009). Samples with the risk haplotype had lower IFI16 expression levels than samples with the protective (0.99 ± 0.29 vs 1.23 ± 0.50, p = 0.022). Consistently, in the ASTQ assays performed with the nonsynonymous rs6940 SNP, the risk allele had lower IFI16 expression levels than the protective (p = 0.027). CONCLUSION: Our findings suggest association of IFI16, a cytosolic sensor of dsDNA and mediator of the AIM2 inflammasome-dependent pathway, in susceptibility to BD. Differences genetically determined in the levels of this molecule could be the cause of this association.


Assuntos
Síndrome de Behçet/genética , Predisposição Genética para Doença , Proteínas Nucleares/genética , Fosfoproteínas/genética , Polimorfismo de Nucleotídeo Único , RNA Mensageiro/genética , Adulto , Alelos , Feminino , Genótipo , Haplótipos , Humanos , Inflamassomos/genética , Masculino , Pessoa de Meia-Idade , Adulto Jovem
12.
Clin Rheumatol ; 33(4): 567-73, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24096638

RESUMO

Internet has become a widely used tool by patients seeking information on different diseases. The information regarding lupus patients' Internet use is scarce. This study aims to explore the attitudes and practices of lupus patients in southern Spain, regarding Internet use to find health-related information. A survey was carried out including 150 patients from six Andalusian Hospitals. To search for information, 67.3 % of the patients used Internet. The proportion of female Internet users was higher (69.3 vs 46.2 %), particularly those belonging to a patients' association (81.8 vs 32.7 %), and are regular users of Internet (80.2 vs 44.4 %); 37.5 % thought the information found in the Internet was of little use or not useful at all, and 58 % of the respondents stated that the information found caused them concern while for 27 %, it was a relief. Most patients preferred the information given by their physicians (63.6 %); 33.9 % considered that the information from both sources was complementary, and 2.5 % preferred the information obtained from the Internet. A percentage of 85.3 of the patients would like their physicians to provide them with information on high-quality sites regarding their illness. Lupus patients make frequent use of the Internet to look for information on their disease. Considering this, and because better-informed patients follow more precisely the indications given by the physician, medical staff should collaborate in the development of high-quality sites for the patient to have additional sources of information.


Assuntos
Comportamento de Busca de Informação , Internet , Lúpus Eritematoso Sistêmico , Adulto , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Distribuição por Sexo , Espanha , Inquéritos e Questionários
13.
Hum Mol Genet ; 21(4): 926-33, 2012 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-22076442

RESUMO

A single-nucleotide polymorphism (SNP) at the IL12RB2 locus showed a suggestive association signal in a previously published genome-wide association study (GWAS) in systemic sclerosis (SSc). Aiming to reveal the possible implication of the IL12RB2 gene in SSc, we conducted a follow-up study of this locus in different Caucasian cohorts. We analyzed 10 GWAS-genotyped SNPs in the IL12RB2 region (2309 SSc patients and 5161 controls). We then selected three SNPs (rs3790567, rs3790566 and rs924080) based on their significance level in the GWAS, for follow-up in an independent European cohort comprising 3344 SSc and 3848 controls. The most-associated SNP (rs3790567) was further tested in an independent cohort comprising 597 SSc patients and 1139 controls from the USA. After conditional logistic regression analysis of the GWAS data, we selected rs3790567 [P(MH)= 1.92 × 10(-5) odds ratio (OR) = 1.19] as the genetic variant with the firmest independent association observed in the analyzed GWAS peak of association. After the first follow-up phase, only the association of rs3790567 was consistent (P(MH)= 4.84 × 10(-3) OR = 1.12). The second follow-up phase confirmed this finding (P(χ2) = 2.82 × 10(-4) OR = 1.34). After performing overall pooled-analysis of all the cohorts included in the present study, the association found for the rs3790567 SNP in the IL12RB2 gene region reached GWAS-level significant association (P(MH)= 2.82 × 10(-9) OR = 1.17). Our data clearly support the IL12RB2 genetic association with SSc, and suggest a relevant role of the interleukin 12 signaling pathway in SSc pathogenesis.


Assuntos
Grupo com Ancestrais do Continente Europeu/genética , Predisposição Genética para Doença/genética , Receptores de Interleucina-12/genética , Escleroderma Sistêmico/genética , Europa (Continente)/etnologia , Seguimentos , Estudo de Associação Genômica Ampla , Humanos , Polimorfismo de Nucleotídeo Único/genética , Estados Unidos/etnologia
14.
Semin Arthritis Rheum ; 41(6): 789-800, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22169458

RESUMO

OBJECTIVE: To investigate the incidence of clinical and immunological characteristics of a large cohort of Spanish patients with scleroderma (SSc) and identifying factors associated with particular organ manifestations assessed by a nationwide cross-sectional analysis. METHODS: We classified SSc patients in 4 subsets using a modification of LeRoy and Medsger classification that included: "prescleroderma" (pre-SSc), limited cutaneous SSc (lcSSc), diffuse cutaneous SSc (dcSSc), and SSc sine scleroderma (ssSSc). Fourteen Spanish centers participated in patient recruitment. On January 2008, the database included 916 consecutive Spanish SSc patients, 801 women (87.4%) and 115 men (12.6%), all of whom fulfilled the classification criteria proposed by LeRoy and Medsger. Epidemiological, clinical, and laboratory data were collected according to a standard protocol. Mean age at diagnosis was 51.2 ± 15.1 years and mean age at disease onset was 44.9.0 ± 15.8 years. lcSSc was the most frequent subset (61.8%) followed by dcSSc (26.5%), ssSSc (7.5%), and preSSc (4%) subsets. Gender ratios were as follows: dcSSc subset, 200 women and 43 men (4.7:1); lcSSc subset, 503 women and 63 men (ratio 7.9:1), and ssSSc subset, 62 women and 7 men (ratio 8.9:1). Digital ulcers, interstitial lung disease (ILD), musculoeskeletal and esophageal involvement, and scleroderma renal crisis were more frequent in dcSSc than lcSSc and ssSSc subsets. The incidence of pulmonary arterial hypertension assessed by echocardiography was similar in all subsets but mean estimated systolic pulmonary arterial pressure was higher in ssSSc than in lcSSc subset (47.3 ± 23.9 mm Hg vs 39.6 ± 19.2 mm Hg; P < 0.03). Cardiac involvement was identified more frequently in ssSSc than in dcSSc and lcSSc subsets (49.3% vs 32.5% and 31.1%, respectively; P = 0.015 and P = 0.004 for both comparisons). Acro-osteolysis (8.2% vs 2.4%, P = 0.049), calcinosis (19.8% vs 7.2%, P < 0.05), and sicca syndrome (37.5% vs 14.5%, P < 0.0001) were more frequent in lcSSc than in ssSSc subsets. The frequency of clinical manifestations related to the presence of anticentromere antibodies or antitopoisomerase I antibodies was very similar to that identified in patients categorized to lcSSc and dcSSc, respectively. However, in multivariate studies, the ranking of the variables according to their overall explanatory effect on the model showed that the contributory effect of the antibody status was not greater than that of the clinical categorization into lcSSc and dcSSc for the majority of disease manifestations, but, in important manifestations, as ILD, absence of anticentromere antibodies was an independent predictor factor. CONCLUSIONS: The classification of SSc into dcSSc, lcSSc, and ssSSc subsets is the one that most closely reflects the natural history of the disease, as they presented clear clinical differences. The immunological profile helps to define important visceral alteration as ILD. Finally, to improve early diagnosis of SSc, patients with preSSc should be considered both to trace the true evolution of the disease and to define which patients could benefit from therapeutic measures able to prevent the appearance of visceral involvements.


Assuntos
Escleroderma Sistêmico/diagnóstico , Escleroderma Sistêmico/epidemiologia , Adulto , Idoso , Estudos Transversais , Feminino , Humanos , Incidência , Doenças Pulmonares Intersticiais/complicações , Doenças Pulmonares Intersticiais/diagnóstico , Masculino , Pessoa de Meia-Idade , Fibrose Pulmonar/complicações , Fibrose Pulmonar/diagnóstico , Sistema de Registros , Escleroderma Sistêmico/complicações , Escleroderma Sistêmico/imunologia , Espanha/epidemiologia
18.
Reumatol. clín. (Barc.) ; 6(5): 256-261, sept.-oct. 2010. tab
Artigo em Espanhol | IBECS | ID: ibc-82046

RESUMO

Objetivos. Analizar los casos de tuberculosis (TB) en una cohorte de pacientes con lupus eritematoso sistémico (LES) y comparar la frecuencia y características de la TB en nuestra serie con las de otras series publicadas; identificar características diferenciales entre los pacientes que presentaron TB y los que no la presentaron, y evaluar si las formas más graves se relacionaron con dosis más altas de glucocorticoides (GC) u otros inmunosupresores. Material y método. Análisis descriptivo de 13 pacientes con TB de una serie de 789 pacientes con LES. Revisión de las historias clínicas de los casos. Búsqueda bibliográfica en MEDLINE-PubMed de las series LES/TB publicadas, utilizando los términos «infection», «tuberculosis», «lupus erythematosus». Estudio comparativo de casos (LES/TB+) y controles (LES/TB–) en cuanto a las características clínicas, de laboratorio y el tratamiento realizado, mediante test X2 y test exacto de Fisher. Resultados. Trece pacientes estuvieron afectados por TB (10 mujeres, con edad media de 36 años; DE de 11,2, y prevalencia del 1,6%). Se diagnosticaron 9 primoinfecciones (69,2%) y 4 reactivaciones (30,8%). El diagnóstico se confirmó mediante aislamiento microbiológico (baciloscopia y/o cultivo) en 11 casos (84,6%). La afectación pulmonar fue la más frecuente (69,2%). Ocho pacientes (61,5%) presentaron formas extrapulmonares, de las que 6 (46%) fueron diseminadas. En el momento del diagnóstico, 9 pacientes (69,2%) recibían tratamiento con GC. Fallecieron 4 pacientes (30,8%). La afectación muscular fue más frecuente en el grupo casos (p < 0,05). Conclusiones. La TB en nuestra serie supuso una alta mortalidad (30,8%) en los enfermos con LES. Las formas extrapulmonares representaron el doble con respecto a la observada en la población general. Los pacientes que recibieron dosis mayores de GC fueron los que presentaron formas más graves de TB. Los datos son similares a los publicados en la mayoría de las series nacionales y extranjeras (AU)


Objectives. 1) To study tuberculosis (TB) infection in a cohort of patients with systemic lupus erythematosus (SLE) and to compare its frequency and characteristics with that of others series. 2) To look for differential characteristic among SLE patients with and without TB. 3) To investigate if there was any relationship between TB's most severe forms and higher doses of glucocorticoids (GC) or other immunosuppressants. Patients and Method Retrospective review of medical records of 789 SLE patients and description of the clinical characteristics of 13 cases of active TB infection among them. Bibliographical search in MEDLINE-PubMed of the SLE/TB series published, using the terms: infection, tuberculosis, systemic lupus erythematosus. Comparative study of clinical, biological and therapeutic differences between cases (SLE/TB+) and controls (SLE/TB) using X2 and Fisher exact test. Results. Thirteen patients with active tuberculosis were detected (10 women, average age 36 years/SD 11,2/prevalence 1,6%). Nine (69,2%) of them were primary infections and 4 (30,8%) reactivations. Microbiological diagnosis (smear examination for acid-fast bacilli and/or culture on Lowestein-Jensen medium) was established in 11 patients (84,6%). TB Pulmonary manifestations was present in 9 patients (69,2%) and extra-pulmonary manifestations were found in 8 [(61,5%); 6 of them (46%) were disseminated forms]. Nine (69,2%) patients were on GC therapy at the moment TB was diagnosed. Four of the TB patients died (30,8%). Myositis was more frequent in TB cases (p < 0,05). This data is similar to that reported in the literature. Conclusions. In our series, TB mortality was high (30,8%) in a patients with SLE. Frequency of extrapulmonary forms was double than that described in the Spanish population. Patients with higher GC dose had more severe forms of TB (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Lúpus Eritematoso Sistêmico/complicações , Lúpus Eritematoso Sistêmico/diagnóstico , Lúpus Eritematoso Sistêmico/terapia , Tuberculose/complicações , Tuberculose/diagnóstico , Estreptomicina/uso terapêutico , Estudos de Coortes , Imunossupressores/uso terapêutico , Glucocorticoides/uso terapêutico , Isoniazida/uso terapêutico , Fatores Imunológicos/uso terapêutico , Comorbidade
19.
Med. clín (Ed. impr.) ; 135(8): 365-367, sept. 2010. tab
Artigo em Espanhol | IBECS | ID: ibc-83629

RESUMO

Fundamento y objetivos: Analizar los episodios infecciosos graves en una cohorte de pacientes con lupus eritematoso sistémico. Pacientes y método: Análisis retrospectivo de 705 pacientes seguidos desde enero de 1980 hasta enero de 2008. Los datos se expresan en valores absolutos y porcentajes. Resultados: La frecuencia de complicaciones infecciosas fue del 38,6%. La etiología fue bacteriana en un 54,4%, vírica en un 30,4% y oportunista en un 5,2%. La afectación visceral lúpica fue pulmonar en un 38,2%, renal en un 48,9% y del sistema nervioso central en un 43%. El 43,75% de los pacientes recibió bolos de ciclofosfamida y el 88,6% glucocorticoides (el 39,7% en bolos). La mortalidad por infección fue del 27,7%. Conclusiones: La infección continúa siendo una causa importante de mortalidad en el lupus eritematoso sistémico, por lo que su diagnóstico precoz es de gran importancia (AU)


Background and objective: To study severe infectious complications in a cohort of patients with systemic lupus erythematosus (SLE). Patients and method: Retrospective study of 705 patients followed from January 1980 to January 2008. Data are expressed in percentages. Results: The frequency of severe infectious was 38,6%. The etiology was bacterial 54,4%, viric 30,4% and opportunist in 15,2% patients. Involved organs were: Lung 38,2%, kidney 48,9%, central nervous system 43%. 43,75% patients received pulsed ciclofosfamide therapy and 88,6% received glucocorticoids (39,7% pulsed). The mortality was 27,7%.Conclusions: At present, infection is an important cause of mortality in patients with SLE. Early diagnosis of infectious complications is very important in SLE (AU)


Assuntos
Humanos , Lúpus Eritematoso Sistêmico/complicações , Infecções Bacterianas/epidemiologia , Lúpus Eritematoso Sistêmico/epidemiologia , Infecções Bacterianas/tratamento farmacológico , Ciclofosfamida/uso terapêutico , Glucocorticoides/uso terapêutico , Indicadores de Morbimortalidade , Estudos Retrospectivos , Autoimunidade
20.
Med. clín (Ed. impr.) ; 135(6): 256-259, jul. 2010. tab
Artigo em Espanhol | IBECS | ID: ibc-84165

RESUMO

Fundamento y objetivo: Comunicamos nuestra experiencia con rituximab más ciclofosfamida en el tratamiento de pacientes con miopatía inflamatoria idiopática refractaria. Pacientes y método: Estudio prospectivo abierto no controlado sobre 17 pacientes.Resultados: Evaluación cumplimentada tras 1, 6 y 12 meses en el 95,2, el 85,7 y el 52,4% de los ciclos, respectivamente. Remisión total o parcial tras 1, 6 y 12 meses en el 65, el 100 y el 63,6% de los ciclos evaluados, respectivamente. Depleción absoluta de linfocitos B en sangre periférica en los 18 casos con datos disponibles, con tendencia a la normalización tras 6 a 12 meses. Hubo 5 recaídas; la mediana de tiempo hasta la recaída fue de 11 meses; hubo repetición del tratamiento en 4 casos. Cuatro pacientes tenían afectación respiratoria; uno (etiología multifactorial) no mejoró, pero sí los otros 3, con neumopatía intersticial aislada o asociada a debilidad muscular respiratoria. Hubo 5 pacientes con anticuerpos anti-Jo-1 positivos (6 ciclos), con respuesta al tratamiento superponible al resto. Se observaron escasos efectos adversos; solo cabe destacar un caso de meningitis por Corynebacterium, con buena evolución.Conclusiones: El rituximab parece una alternativa válida en el tratamiento de pacientes con polimiositis o dermatomiositis resistentes (AU)


Background and objective: We report our experience with rituximab plus cyclophosphamide in the treatment of patients with resistant idiopathic inflammatory myopathies. Patients and method: Open-label uncontrolled prospective sudy on 17 patients.Results: Evaluation was completed after 1, 6 and 12 months in 95’2, 85’7 y 52’4% of cycles, respectively. Total or partial remission was achieved after 1, 6 and 12 months in 65, 100 y 63’6% of evaluated cycles, respectively. Absolute depletion of B lymphocites from peripheral blood was found in the 18 cases with available data. There were 5 relapses; median of time to relapse: 11 months; treatment was repeated in 4. Four patients (6 cycles) had impaired pulmonary function; one (with a multifactorial etiology) did not improve but the other 3, with interstitial pneumonia associated or not with respiratory muscle weakness, did. Five patients with positive anti-Jo-1 antibodies (6 cycles) displayed similar results. The only adverse event observed was a case of meningitis caused by Corynebacterium, with good results. Conclusion: Rituximab seems a valid alternative for the treatment of patients with resistant polymyositis or dermatomyosytis (AU)


Assuntos
Humanos , Ciclofosfamida/uso terapêutico , Anticorpos Monoclonais/uso terapêutico , Miosite/tratamento farmacológico , Estudos Prospectivos , Quimioterapia Combinada , Resistência a Medicamentos , Resultado do Tratamento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA