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Association between osteoporosis and rheumatoid arthritis in women: a cross-sectional study; Associação entre osteoporose e artrite reumatóide em mulheres: estudo transversal

SARKIS, Karin Sedó; SALVADOR, Mariana Barbieri; PINHEIRO, Marcelo Medeiros; SILVA, Raissa Gomes; ZERBINI, Cristiano Augusto; MARTINI, Lígia Araújo
Fonte: Associação Paulista de Medicina - APM Publicador: Associação Paulista de Medicina - APM
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
66.58%
CONTEXT AND OBJECTIVES: Osteoporosis has frequently been observed in patients with rheumatoid arthritis. The present study was undertaken in order to evaluate factors associated with osteoporosis among women with rheumatoid arthritis. DESIGN AND SETTING: Cross-sectional study, carried out in a public hospital in São Paulo. METHODS: The participants were 83 women with rheumatoid arthritis (53.7 ± 10.0 years old). Bone mineral density (BMD) and body composition were measured by dual energy X-ray absorptiometry. The patients were divided into three groups according to BMD: group 1, normal BMD (n = 24); group 2, osteopenia (n = 38); and group 3, osteoporosis (n = 21). Tests were performed to compare differences in means and correlations, with adjustments for age, duration of disease and cumulative corticosteroid. The relationships between clinical factors, physical activity score, dietary intake, body composition and biochemical parameters were analyzed using linear regression models. RESULTS: Mean calcium, vitamin D and omega-6 intakes were lower than the recommendations. Associations were found between BMD and age, disease duration, parathyroid hormone concentration and fat intake. The linear regression model showed that being older...

Cinética plasmática da lipoproteína de baixa densidade e avaliação dos aspectos qualitativos da lipoproteína de alta densidade em indivíduos com artrite reumatóide; Plasma kinetics of an LDL-like non-protein nanoemulsion and transfer of lipids to high-density Lipoprotein (HDL) in patients with rheumatoid arthritis

Pozzi, Fernanda Santos
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 10/02/2012 PT
Relevância na Pesquisa
66.74%
Artrite reumatóide é uma doença auto-imune que apresenta acentuado quadro inflamatório e proliferação celular o que, provavelmente, determina a alta prevalência de doenças cardiovasculares quando comparados a população mundial. A mortalidade e a morbidade conseqüentes das doenças cardiovasculares estão 2 vezes aumentadas em pacientes com artrite reumatóide e um dos principais fatores de risco relacionados ao desenvolvimento da aterosclerose é a dislipidemia. Esse importante fator de risco vem sendo associado à artrite reumatóide e as concentrações plasmáticas de lípides são constantemente avaliadas, já que se encontra bem estabelecido a relação entre dislipidemia e alta incidência de doença cardiovascular. No entanto, o verdadeiro impacto das alterações lipídicas na artrite reumatóide não é bem conhecido, já que os resultados de perfil lipídico são contraditórios. Alterações nas concentrações plasmáticas de lípides não necessariamente acompanham distúrbios no metabolismo das lipoproteínas plasmáticas. O objetivo do presente estudo foi avaliar aspectos do metabolismo da LDL e da HDL, em pacientes com artrite reumatóide. Nesse sentido, foi avaliada a cinética plasmática de uma nanoemulsão lipídica artificial com comportamento metabólico semelhante ao da LDL em 30 pacientes com artrite reumatóide divididos em 2 grupos de acordo com a atividade da doença...

Non-tumor necrosis factor-based biologic therapies for rheumatoid arthritis: present, future, and insights into pathogenesis.

Paula, F; Alves, J
Fonte: Dove Medical Press Publicador: Dove Medical Press
Tipo: Artigo de Revista Científica
Publicado em //2014 ENG
Relevância na Pesquisa
66.65%
Therapeutic options for patients suffering from the more severe forms of spondyloarthritis have been rather limited in the last decades. There is now accumulating evidence that antitumor necrosis factor therapy is highly effective in spondyloarthritis, especially in ankylosing spondylitis and psoriatic arthritis. Based on the data recently published on more than 500 patients with ankylosing spondylitis and psoriatic arthritis, this treatment seems to be even more effective than in rheumatoid arthritis. The antitumor necrosis factor-alpha agents currently available, infliximab (Remicade), etanercept (Enbrel), and adalimumab (Humira), are approved for the treatment of rheumatoid arthritis in the United States and partly in Europe. The situation in spondyloarthritis is different from that of rheumatoid arthritis because there is an unmet medical need, especially in ankylosing spondylitis: no therapies with disease-modifying antirheumatic drugs are available for severely affected patients, especially with spinal disease. Thus, tumor necrosis factor blockers may even be considered a first-line treatment in a patient with active ankylosing spondylitis and psoriatic arthritis whose condition is not sufficiently controlled with nonsteroidal antiinflammatory drugs in the case of axial disease...

Immunoglobulin E-rheumatoid factor in juvenile rheumatoid arthritis

Ferreira,Rosa Aparecida; Ferriani,Virgínia Paes Leme; Sopelete,Mônica Camargo; Silva,Deise Aparecida Oliveira; Mineo,José Roberto; Kiss,Maria Helena Bittencourt; Silva,Carlos Henrique Martins
Fonte: Faculdade de Medicina / Universidade de São Paulo - FM/USP Publicador: Faculdade de Medicina / Universidade de São Paulo - FM/USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2002 EN
Relevância na Pesquisa
66.71%
OBJECTIVES: To determine the presence of immunoglobulin E-rheumatoid factor in patients with juvenile rheumatoid arthritis and to correlate it with clinical and laboratory parameters. METHODS: A multicenter prospective study was carried out from January 1993 to January 1999 with the enrollment of 3 centers of pediatric rheumatology. Ninety-one children with juvenile rheumatoid arthritis diagnosed according to the American College of Rheumatology criteria were studied: 38 (42%) with systemic, 28 (31%) with pauciarticular, and 25 (27%) with polyarticular onset. Ages ranged from 2.1 years to 22.6 years (mean 10.5 ± 4.7), with 59 (65%) girls. The control group consisted of 45 healthy children. The detection of immunoglobulin E-rheumatoid factor was carried out utilizing an enzyme-linked immunosorbent assay. Associations of immunoglobulin E-rheumatoid factor with immunoglobulin M-rheumatoid factor (latex agglutination test), total serum immunoglobulin E, erythrocyte sedimentation rate, antinuclear antibody, and functional and radiological classes III or IV were analyzed. RESULTS: Positive immunoglobulin E-rheumatoid factor was found in 15 (16.5%) of the 91 children with juvenile rheumatoid arthritis: 7 (18.5%) with systemic, 5 (18%) with pauciarticular...

Association between osteoporosis and rheumatoid arthritis in women: a cross-sectional study

Sarkis,Karin Sedó; Salvador,Mariana Barbieri; Pinheiro,Marcelo Medeiros; Silva,Raissa Gomes; Zerbini,Cristiano Augusto; Martini,Lígia Araújo
Fonte: Associação Paulista de Medicina - APM Publicador: Associação Paulista de Medicina - APM
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/07/2009 EN
Relevância na Pesquisa
66.58%
CONTEXT AND OBJECTIVES: Osteoporosis has frequently been observed in patients with rheumatoid arthritis. The present study was undertaken in order to evaluate factors associated with osteoporosis among women with rheumatoid arthritis. DESIGN AND SETTING: Cross-sectional study, carried out in a public hospital in São Paulo. METHODS: The participants were 83 women with rheumatoid arthritis (53.7 ± 10.0 years old). Bone mineral density (BMD) and body composition were measured by dual energy X-ray absorptiometry. The patients were divided into three groups according to BMD: group 1, normal BMD (n = 24); group 2, osteopenia (n = 38); and group 3, osteoporosis (n = 21). Tests were performed to compare differences in means and correlations, with adjustments for age, duration of disease and cumulative corticosteroid. The relationships between clinical factors, physical activity score, dietary intake, body composition and biochemical parameters were analyzed using linear regression models. RESULTS: Mean calcium, vitamin D and omega-6 intakes were lower than the recommendations. Associations were found between BMD and age, disease duration, parathyroid hormone concentration and fat intake. The linear regression model showed that being older...

Association analysis of anti-Epstein-Barr nuclear antigen-1 antibodies, anti-cyclic citrullinated peptide antibodies, the shared epitope and smoking status in Brazilian patients with rheumatoid arthritis

Yazbek,Michel Alexandre; Barros-Mazon,Silvia de; Rossi,Cláudio Lúcio; Londe,Ana Carolina; Costallat,Lilian Tereza Lavras; Bertolo,Manoel Barros
Fonte: Faculdade de Medicina / USP Publicador: Faculdade de Medicina / USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2011 EN
Relevância na Pesquisa
66.73%
INTRODUCTION: Epstein-Barr virus exposure appears to be an environmental trigger for rheumatoid arthritis that interacts with other risk factors. Relationships among anti-cyclic citrullinated peptide antibodies, the shared epitope, and smoking status have been observed in patients with rheumatoid arthritis from different populations. OBJECTIVE: To perform an association analysis of anti-Epstein-Barr nuclear antigen-1 antibodies, anti-cyclic citrullinated peptide antibodies, the shared epitope, and smoking status in Brazilian patients with rheumatoid arthritis. METHODS: In a case-control study, 140 rheumatoid arthritis patients and 143 healthy volunteers who were matched for age, sex, and ethnicity were recruited. Anti-Epstein-Barr nuclear antigen-1 antibodies and anti-cyclic citrullinated peptide antibodies were examined using an enzyme-linked immunosorbent assay, and shared epitope alleles were identified by genotyping. Smoking information was collected from all subjects. A comparative analysis of anti-Epstein-Barr nuclear antigen-1 antibodies, anti-cyclic citrullinated peptide antibodies, the shared epitope, and smoking status was performed in the patient group. Logistic regression analysis models were used to analyze the risk of rheumatoid arthritis. RESULTS: Anti-Epstein-Barr nuclear antigen-1 antibodies were not associated with anti-cyclic citrullinated peptide antibodies...

Contrasting diagnosis performance of forced oscillation and spirometry in patients with rheumatoid arthritis and respiratory symptoms

Faria,Alvaro Camilo Dias; Barbosa,Wellington Ribeiro; Lopes,Agnaldo José; Pinheiro,Geraldo da Rocha Castelar; Melo,Pedro Lopes de
Fonte: Faculdade de Medicina / USP Publicador: Faculdade de Medicina / USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2012 EN
Relevância na Pesquisa
66.65%
OBJECTIVES: Pulmonary involvement in rheumatoid arthritis is directly responsible for 10% to 20% of all mortality. The best way to improve the prognosis is early detection and treatment. The forced oscillation technique is easy to perform and offers a detailed exam, which may be helpful in the early detection of respiratory changes. This study was undertaken to (1) evaluate the clinical potential of the forced oscillation technique in the detection of early respiratory alterations in rheumatoid arthritis patients with respiratory complaints and (2) to compare the sensitivity of forced oscillation technique and spirometric parameters. METHODS: A total of 40 individuals were analyzed: 20 healthy and 20 with rheumatoid arthritis (90% with respiratory complaints). The clinical usefulness of the parameters was evaluated by investigating the sensibility, the specificity and the area under the receiver operating characteristic curve. ClinicalTrials.gov: NCT01641705. RESULTS: The early adverse respiratory effects of rheumatoid arthritis were adequately detected by the forced oscillation technique parameters, and a high accuracy for clinical use was obtained (AUC.0.9, Se = 80%, Sp = 95%). The use of spirometric parameters did not obtain an appropriate accuracy for clinical use. The diagnostic performance of the forced oscillation technique parameters was significantly higher than that of spirometry. CONCLUSIONS: The results of the present study provide substantial evidence that the forced oscillation technique can contribute to the easy identification of initial respiratory abnormalities in rheumatoid arthritis patients that are not detectable by spirometric exams. Therefore...

Expression of leukocyte-associated immunoglobulin-like receptor-1 (LAIR-1) on osteoclasts and its potential role in rheumatoid arthritis

Zhang,Yuan; Ding,Yong; Huang,Yi; Zhang,Chunmei; Boquan,Jin; Ran,Zhuang
Fonte: Faculdade de Medicina / USP Publicador: Faculdade de Medicina / USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2013 EN
Relevância na Pesquisa
66.62%
OBJECTIVE: Leukocyte-associated immunoglobulin-like receptor-1 is an inhibitory receptor primarily expressed by immune cells. This study was undertaken to define the role of this molecule in osteoclast differentiation and rheumatoid arthritis. METHODS: In vitro osteoclast assays were performed to characterize the role of Leukocyte-associated immunoglobulin-like receptor-1 in murine and human osteoclastogenesis. Human Leukocyte-associated immunoglobulin-like receptor-1 expression was assessed by immunohistochemistry staining in the synovium of patients with rheumatoid arthritis. The levels of soluble Human Leukocyte-associated immunoglobulin-like receptor-1 were determined by enzyme-linked immunosorbent assay. RESULTS: We found that multinucleated osteoclast formation from mouse bone marrow cells was inhibited by treatment with a monoclonal antibody against mouse Leukocyte-associated immunoglobulin-like receptor-1 in vitro. By immunohistochemistry, we found that Leukocyte-associated immunoglobulin-like receptor-1 was mainly expressed by macrophages in the inflamed synovial tissue of rheumatoid arthritis patients. In addition, serum and synovial fluid levels of soluble Leukocyte-associated immunoglobulin-like receptor-1 were higher in rheumatoid arthritis patients compared to healthy controls or osteoarthritis patients. Moreover...

Hydroxychloroquine decreases Th17-related cytokines in systemic lupus erythematosus and rheumatoid arthritis patients

Silva,Juliana Cruz da; Mariz,Henrique Ataide; Rocha Júnior,Laurindo Ferreira da; Oliveira,Priscilla Stela Santana de; Dantas,Andrea Tavares; Duarte,Angela Luzia Branco Pinto; Pitta,Ivan da Rocha; Galdino,Suely Lins; Pitta,Maira Galdino da Rocha
Fonte: Faculdade de Medicina / USP Publicador: Faculdade de Medicina / USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2013 EN
Relevância na Pesquisa
66.58%
OBJECTIVES: Hydroxychloroquine is an antimalarial agent that has been used in systemic lupus erythematosus and rheumatoid arthritis treatment for many years. Recently, novel mechanisms of action have been proposed, thereby broadening the therapeutic perspective of this medication. The purpose of this study was to evaluate the immunomodulatory activity of hydroxychloroquine in T helper 17 (Th17) cytokines in healthy individuals and patients. METHODS: Eighteen female patients with systemic lupus erythematosus (mean age 39.0±12.9 years) and 13 female patients with rheumatoid arthritis (mean age 51.5±7.7 years) were recruited from Universidade Federal de Pernambuco-Brazil. The patients were included after fulfilling four classification criteria for systemic lupus erythematosus or rheumatoid arthritis from the American College of Rheumatology. After being stimulated with phorbol 12-myristate 13-acetate and ionomycin in the absence or presence of different concentrations of hydroxychloroquine, the interleukin 6, 17 and 22 levels were quantified with an enzyme-linked immunosorbent assay in culture supernatants of peripheral blood mononuclear cells from healthy individuals and patients. RESULTS: We demonstrated that in peripheral blood mononuclear cells from healthy volunteers and in systemic lupus erythematosus and rheumatoid arthritis patients...

OCCURRENCE OF γ-GLOBULIN COMPLEXES IN SERUM AND JOINT FLUID OF RHEUMATOID ARTHRITIS PATIENTS: USE OF MONOCLONAL RHEUMATOID FACTORS AS REAGENTS FOR THEIR DEMONSTRATION

Winchester, R. J.; Kunkel, H. G.; Agnello, V.
Fonte: The Rockefeller University Press Publicador: The Rockefeller University Press
Tipo: Artigo de Revista Científica
Publicado em 01/09/1971 EN
Relevância na Pesquisa
66.62%
γG globulin complexed in an unusual form has been demonstrated in the serum of many patients with rheumatoid arthritis. Such complexes have been detected and isolated principally through precipitation reactions with monoclonal γM rheumatoid factors. These monoclonal rheumatoid factors exhibited a greater sensitivity to react with small complexes or aggregates of γ-globulin than polyclonal rheumatoid factor from rheumatoid arthritis sera or isolated C1q. The serum complexes consisted in large part of high molecular weight but acid-dissociable 7S γG globulin molecules They however differed from the complexes in the joint fluid by not yielding precipitates with C1q and were not found in association with evidence of marked serum complement fixation or activation. A small number of systemic lupus erythematosus sera, primarily those forming cryoprecipitates, also gave reactions with monoclonal rheumatoid factor. Sera from patients with a variety of nonrheumatic diseases gave a low incidence of reactions. The exact nature of the complexes in the rheumatoid arthritis sera remains somewhat in doubt although γG rheumatoid factors appear partly involved.

Avaliação do uso de terapias biológicas em pacientes com artrite reumatoide no Estado de Mato Grosso, Brasil; Evaluation of the use of biologic therapies in patients with rheumatoid arthritis in the State of Mato Grosso, Brazil

FERNANDES, Vander
Fonte: Universidade Federal de Goiás; BR; UFG; Doutorado em Ciencias da Saude; Ciencias da Saude Publicador: Universidade Federal de Goiás; BR; UFG; Doutorado em Ciencias da Saude; Ciencias da Saude
Tipo: Tese de Doutorado Formato: application/pdf
POR
Relevância na Pesquisa
66.62%
RA is debilitating autoimmune disease with serious physical, emotional and economic consequences, which affects about 0.5 to 1% of the adult population worldwide. Significant advances in the recognition of the pathophysiology of disease and injury mechanisms allowed the development of new treatment options with drugs that block inflammatory mediators involved in the mechanism of the disease, known as biologics. These drugs are expensive and of continuous use. They are complex to use due care and management of storage and the risk of immediate and delayed adverse reactions. These therapies are available at the Health System for 12 years, is necessary to evaluate the effectiveness of this drug group in the Brazilian public health system in the treatment of rheumatoid arthritis. OBJECTIVES: a) analyze the effectiveness of biological therapies in patients with rheumatoid arthritis of the State of Mato Grosso, through the assessment of disease activity index DAS28-ESR b) Review the laboratory characteristics of these patients; c) examine the safe use these therapies and to describe adverse events. d) analyze the efficiency of the program dispensing of biological therapies in the State of Mato Grosso, Brazil. METHODS: Two groups of patients with rheumatoid arthritis users Pharmacy High Cost of the State Secretariat of Health of Mato Grosso (FAC / SES) or the University General Hospital. Group I included 68 patients who were already in use of biological therapies. These were assessed for disease activity at the time of inclusion in the study and asked about the historical use of biological drugs...

Tumor necrosis factor priming of peripheral blood neutrophils from rheumatoid arthritis patients

Kowanko, I.; Ferrante, A.; Clemente, G.; Youssef, P.; Smith, M.
Fonte: PLENUM PUBL CORP Publicador: PLENUM PUBL CORP
Tipo: Artigo de Revista Científica
Publicado em //1996 EN
Relevância na Pesquisa
66.64%
Recently it was shown that tumor necrosis factor-agr (TNF) receptors on neutrophils may be down-regulated after stimulation with proinflammatory mediators. Since in rheumatoid arthritis neutrophils are likely to encounter these mediators in the circulation, we tested the hypothesis that rheumatoid arthritis neutrophil TNF receptors are down-regulated. Peripheral blood neutrophils from patients with rheumatoid arthritis and healthy subjects were compared with respect to their TNF binding activity and ability to be primed by TNF. There were no differences between rheumatoid arthritis and control neutrophils in receptor-mediated TNF binding, superoxide release in response to agonist, and TNF priming of this respiratory burst or in the ability to degrade cartilagein vitro and TNF priming for increased cartilage damage. It is evident that rheumatoid arthritis blood neutrophils retain the ability to bind TNF and can be primed by TNF for increased oxygen radical production and augmented cartilage damage. These findings further implicate the role of neutrophils in the pathogenesis of arthritis.; I. C. Kowanko, A. Ferrante, G. Clemente, P. P. Youssef and M. Smith

Angiogenesis in rheumatoid arthritis

Maruotti, Nicola; Cantatore, F.P.; Crivellato, E.; Vacca, A.; Ribatti, Doménico
Fonte: Murcia : F. Hernández Publicador: Murcia : F. Hernández
Tipo: Artigo de Revista Científica Formato: application/pdf
ENG
Relevância na Pesquisa
66.59%
There is much evidence that rheumatoid arthritis is closely linked to angiogenesis. Important angiogenic mediators have been demonstrated in synovium and tenosynovium of rheumatoid joints. VEGF (Vascular Endothelial Growth Factor), expressed in response to soluble mediators such as cytokines and growth factors and its receptors are the best characterized system in the angiogenesis regulation of rheumatoid joints. Moreover, other angiogenic mediators such as platelet-derived growth factor (PDGF), fibroblast growth factor-2 (FGF-2), epidermal growth factor (EGF), insulin-like growth factor (IGF), hepatocyte growth factor (HGF), transforming growth factor beta (TGF-ß), tumor necrosis factor alpha (TNF- a), interleukin-1 (IL-1), IL-6, IL-8, IL-13, IL-15, IL-18, angiogenin, platelet activating factor (PAF), angiopoietin, soluble adhesion molecules, endothelial mediator (endoglin) play an important role in angiogenesis in rheumatoid arthritis. On the other hand, endostatin, thrombospondin-1 and -2 are angiogenic inhibitors in rheumatoid arthritis. The persistence of inflammation in rheumatoid joints is a consequence of an imbalance between these inducers and inhibitors of angiogenesis.

Leprosy and rheumatoid arthritis: consequence or association?

Henriques, C; Lopéz, B; Mestre, T; Grima, B; Panarra, A; Riso, N
Fonte: BMJ Publicador: BMJ
Tipo: Artigo de Revista Científica
Publicado em //2012 ENG
Relevância na Pesquisa
66.63%
Leprosy or Hansen's disease is a chronic granulomatous infectious disease caused by Mycobacterium leprae with a high prevalence in some developing countries however, it is rarely seen in non-endemic regions. Arthritis has been described in all types of Hansen's disease. Chronic arthritis is known to exist even in paucibacillary forms, resolved or treated disease and in patients without reaction, suggesting a perpetuated inflammatory process. In these cases leprosy can mimic some autoimmune diseases such as rheumatoid arthritis. When a patient with a history of leprosy presents with a symmetric, distal, polyarthritis the diagnosis may not be linear. Possibly it is a rheumatoid-like leprous arthritis with M leprae acting as the trigger element for the chronic process or it is an overlap condition, with a concomitant rheumatoid arthritis? A case report of a patient with a chronic inflammatory arthritis with 10 years of evolution is presented. The differential diagnosis between leprous and rheumatoid arthritis is discussed.

A close association of body cell mass loss with disease activity and disability in Chinese patients with rheumatoid arthritis

Chen,Yi-Ming; Chen,Hsin-Hua; Hsieh,Chia-Wei; Hsieh,Tsu-Yi; Lan,Joung-Liang; Chen,Der-Yuan
Fonte: Faculdade de Medicina / USP Publicador: Faculdade de Medicina / USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2011 EN
Relevância na Pesquisa
66.73%
OBJECTIVES: To investigate the association of body cell mass loss with disease activity and disability in rheumatoid arthritis patients. INTRODUCTION: Rheumatoid cachexia, defined as the loss of body cell mass, is important but under-recognized and contributes to morbidity and mortality in patients with rheumatoid arthritis. METHODS: One hundred forty-nine rheumatoid arthritis patients and 53 healthy, non-rheumatoid arthritis control subjects underwent anthropometric measurements of body mass index and waist and hip circumferences. Bioelectrical impedance analysis was used to determine the subjects' body compositions, including fat mass, skeletal lean mass, and body cell mass. The disease activity of rheumatoid arthritis was assessed using C-reactive protein serum, the erythrocyte sedimentation rate and the 28-joint disease activity score, while disability was evaluated using a health assessment questionnaire. RESULTS: Rheumatoid arthritis patients had lower waist-to-hip ratio (0.86 ± 0.07 vs. 0.95 ± 0.06; p<0.001) and lower skeletal lean mass indexes (14.44 ±1.52 vs. 15.18 ± 1.35; p = 0.002) than those in the healthy control group. Compared with rheumatoid arthritis patients with higher body cell masses, those with body cell masses lower than median had higher erythrocyte sedimentation rates (40.10 ± 27.33 vs. 25.09 ± 14.85; p<0.001)...

Synthesis of overlapping fibrin citrullinated peptides and their use for diagnosing rheumatoid arthritis

Pérez Rodríguez, María L.; Gómara Elena, María José; Kasi, Devi; Alonso, Ana; Viñas, O.; Ercilla, Guadalupe; Sanmartí, Raimon; Haro Villar, Isabel
Fonte: Blackwell Publishing Publicador: Blackwell Publishing
Tipo: Artículo Formato: 22195 bytes; application/pdf
ENG
Relevância na Pesquisa
66.6%
7 pages, 2 figures.-- PMID: 17105483 [PubMed].; With the aim of developing a new enzyme-linked immunosorbent assay test to detect autoantibodies in the sera of rheumatoid arthritis patients with a high sensitivity and specificity using synthetic citrullinated peptides of fibrin (which is abundant in rheumatoid synovium) as antigenic substract, peptides belonging to α- and β-fibrin chains were selected by computer-aided prediction of antigenicity and epitope mapping and synthesized in solid phase. We analysed by enzyme-linked immunosorbent assay 133 sera from patients with well-characterized rheumatic diseases, including 67 patients with rheumatoid arthritis. The results of the immunoassays reported highlight the usefulness of fibrin-related peptides in rheumatoid arthritis diagnosis and, especially, the ability and specificity of the [Cit621,627,630]α-fibrin(617–631) (αfib617) peptide sequence to recognize the autoantibodies that are present in rheumatoid arthritis patients.; This work was funded by Grant 030331 from the Foundation Marató TV3, Catalonia (Spain).; Peer reviewed

A close association of body cell mass loss with disease activity and disability in Chinese patients with rheumatoid arthritis

Chen, Yi-Ming; Chen, Hsin-Hua; Hsieh, Chia-Wei; Hsieh, Tsu-Yi; Lan, Joung-Liang; Chen, Der-Yuan
Fonte: Universidade de São Paulo. Faculdade de Medicina Publicador: Universidade de São Paulo. Faculdade de Medicina
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; ; Formato: application/pdf
Publicado em 01/01/2011 ENG
Relevância na Pesquisa
66.66%
OBJECTIVES: To investigate the association of body cell mass loss with disease activity and disability in rheumatoid arthritis patients. INTRODUCTION: Rheumatoid cachexia, defined as the loss of body cell mass, is important but under-recognized and contributes to morbidity and mortality in patients with rheumatoid arthritis. METHODS: One hundred forty-nine rheumatoid arthritis patients and 53 healthy, non-rheumatoid arthritis control subjects underwent anthropometric measurements of body mass index and waist and hip circumferences. Bioelectrical impedance analysis was used to determine the subjects' body compositions, including fat mass, skeletal lean mass, and body cell mass. The disease activity of rheumatoid arthritis was assessed using C-reactive protein serum, the erythrocyte sedimentation rate and the 28-joint disease activity score, while disability was evaluated using a health assessment questionnaire. RESULTS: Rheumatoid arthritis patients had lower waist-to-hip ratio (0.86 ± 0.07 vs. 0.95 ± 0.06; p

Association analysis of anti-Epstein-Barr nuclear antigen-1 antibodies, anti-cyclic citrullinated peptide antibodies, the shared epitope and smoking status in Brazilian patients with rheumatoid arthritis

Yazbek, Michel Alexandre; Barros-Mazon, Silvia de; Rossi, Cláudio Lúcio; Londe, Ana Carolina; Costallat, Lilian Tereza Lavras; Bertolo, Manoel Barros
Fonte: Universidade de São Paulo. Faculdade de Medicina Publicador: Universidade de São Paulo. Faculdade de Medicina
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; ; Formato: application/pdf
Publicado em 01/01/2011 ENG
Relevância na Pesquisa
66.73%
INTRODUCTION: Epstein-Barr virus exposure appears to be an environmental trigger for rheumatoid arthritis that interacts with other risk factors. Relationships among anti-cyclic citrullinated peptide antibodies, the shared epitope, and smoking status have been observed in patients with rheumatoid arthritis from different populations. OBJECTIVE: To perform an association analysis of anti-Epstein-Barr nuclear antigen-1 antibodies, anti-cyclic citrullinated peptide antibodies, the shared epitope, and smoking status in Brazilian patients with rheumatoid arthritis. METHODS: In a case-control study, 140 rheumatoid arthritis patients and 143 healthy volunteers who were matched for age, sex, and ethnicity were recruited. Anti-Epstein-Barr nuclear antigen-1 antibodies and anti-cyclic citrullinated peptide antibodies were examined using an enzyme-linked immunosorbent assay, and shared epitope alleles were identified by genotyping. Smoking information was collected from all subjects. A comparative analysis of anti-Epstein-Barr nuclear antigen-1 antibodies, anti-cyclic citrullinated peptide antibodies, the shared epitope, and smoking status was performed in the patient group. Logistic regression analysis models were used to analyze the risk of rheumatoid arthritis. RESULTS: Anti-Epstein-Barr nuclear antigen-1 antibodies were not associated with anti-cyclic citrullinated peptide antibodies...

Contrasting diagnosis performance of forced oscillation and spirometry in patients with rheumatoid arthritis and respiratory symptoms

Faria, Alvaro Camilo Dias; Barbosa, Wellington Ribeiro; Lopes, Agnaldo José; Pinheiro, Geraldo da Rocha Castelar; Melo, Pedro Lopes de
Fonte: Universidade de São Paulo. Faculdade de Medicina Publicador: Universidade de São Paulo. Faculdade de Medicina
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/09/2012 ENG
Relevância na Pesquisa
66.65%
OBJECTIVES: Pulmonary involvement in rheumatoid arthritis is directly responsible for 10% to 20% of all mortality. The best way to improve the prognosis is early detection and treatment. The forced oscillation technique is easy to perform and offers a detailed exam, which may be helpful in the early detection of respiratory changes. This study was undertaken to (1) evaluate the clinical potential of the forced oscillation technique in the detection of early respiratory alterations in rheumatoid arthritis patients with respiratory complaints and (2) to compare the sensitivity of forced oscillation technique and spirometric parameters. METHODS: A total of 40 individuals were analyzed: 20 healthy and 20 with rheumatoid arthritis (90% with respiratory complaints). The clinical usefulness of the parameters was evaluated by investigating the sensibility, the specificity and the area under the receiver operating characteristic curve. ClinicalTrials.gov: NCT01641705. RESULTS: The early adverse respiratory effects of rheumatoid arthritis were adequately detected by the forced oscillation technique parameters, and a high accuracy for clinical use was obtained (AUC.0.9, Se = 80%, Sp = 95%). The use of spirometric parameters did not obtain an appropriate accuracy for clinical use. The diagnostic performance of the forced oscillation technique parameters was significantly higher than that of spirometry. CONCLUSIONS: The results of the present study provide substantial evidence that the forced oscillation technique can contribute to the easy identification of initial respiratory abnormalities in rheumatoid arthritis patients that are not detectable by spirometric exams. Therefore...

Fator reumatóide-imunoglobulina E na artrite reumatóide juvenil; Immunoglobulin E-rheumatoid factor in juvenile rheumatoid arthritis

Ferreira, Rosa Aparecida; Ferriani, Virgínia Paes Leme; Sopelete, Mônica Camargo; Silva, Deise Aparecida Oliveira; Mineo, José Roberto; Kiss, Maria Helena Bittencourt; Silva, Carlos Henrique Martins
Fonte: Universidade de São Paulo. Faculdade de Medicina Publicador: Universidade de São Paulo. Faculdade de Medicina
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; Formato: application/pdf
Publicado em 01/09/2002 ENG
Relevância na Pesquisa
66.71%
OBJETIVOS: Determinar os níveis séricos do fator reumatóide-imunoglobulina E na artrite reumatóide juvenil e correlacioná-los com parâmetros clínicos e laboratoriais. MÉTODOS: Estudo multicêntrico prospectivo, realizado entre janeiro de 1993 a janeiro de 1999 com participação de três centros de reumatologia pediátrica. Estudaram-se 91 crianças com o diagnóstico de artrite reumatóide juvenil de acordo com os critérios do Colégio Americano de Reumatologia: 38 (42%) com a forma de início sistêmica, 28 (31%) pauciarticular e 25 (27%) poliarticular. A idade variou de 2,1 a 22,6 anos (média de 10,5 ± 4,7 anos) e 59 (65%) crianças eram do sexo feminino. O grupo controle constituiu-se de 45 crianças sadias. A detecção do fator reumatóide-imunoglobulina E foi realizada através de um ensaio imunoenzimático. Associações do fator reumatóide-imunoglobulina E com: fator reumatóide-imunoglobulina M (látex), imunoglobulina E sérica total, VHS, FAN, classe funcional e radiológica III ou IV foram analisadas. RESULTADOS: Das 91 crianças com artrite reumatóide juvenil, quinze (16,5%) apresentaram fator reumatóide-imunoglobulina E positivo. Destas, 7(18,5%) na forma sistêmica, 5 (18%) na pauciarticular e 3 (12%) na poliarticular. Observou-se correlação estatisticamente significativa entre o fator reumatóide-imunoglobulina E e a média geométrica da imunoglobulina E sérica total no total dos pacientes com artrite reumatóide juvenil; não foi observada correlação estatística entre o fator reumatóide-imunoglobulina E e positividade para o Látex...