Consulta: creatorFacets:"Andrade,L.E.C."
Registros recuperados: 6
Data/hora: 03/06/2024 18:00:13

Correlation between serum E-selectin levels and panoramic nailfold capillaroscopy in systemic sclerosis
Provedor de dados: 56
Autores: Valim,V.; Assis,L.S.S.; Simões,M.F.J.; Trevisani,V.F.M.; Pucinelli,M.L.C.; Andrade,L.E.C.
E-selectin is expressed by the activated endothelium and its plasma levels are increased in patients with systemic sclerosis. Eighteen patients fulfilling the American Rheumatism Association criteria for systemic sclerosis, 15 females and 3 males, 42-70 years old, 9 with diffuse and 9 with limited forms, were sequentially recruited for this study. Serum E-selectin levels were determined by commercially available ELISA and their association with nailfold capillaroscopic abnormalities was investigated. Nailfold capillaries were analyzed by 16X magnification wide-field capillaroscopy. Two parameters on capillaroscopy were used to correlate to serum E-selectin: deletion and ectasia. Data were analyzed statistically by the Student t-test and Spearman...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Systemic sclerosis; Nailfold capillaroscopy; E-selectin; Adhesion molecules.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000900018

Follicular helper T cell in immunity and autoimmunity
Provedor de dados: 56
Autores: Mesquita Jr,D.; Cruvinel,W.M.; Resende,L.S.; Mesquita,F.V.; Silva,N.P.; Câmara,N.O.S.; Andrade,L.E.C.
The traditional concept that effector T helper (Th) responses are mediated by Th1/Th2 cell subtypes has been broadened by the recent demonstration of two new effector T helper cells, the IL-17 producing cells (Th17) and the follicular helper T cells (Tfh). These new subsets have many features in common, such as the ability to produce IL-21 and to express the IL-23 receptor (IL23R), the inducible co-stimulatory molecule ICOS, and the transcription factor c-Maf, all of them essential for expansion and establishment of the final pool of both subsets. Tfh cells differ from Th17 by their ability to home to B cell areas in secondary lymphoid tissue through interactions mediated by the chemokine receptor CXCR5 and its ligand CXCL13. These CXCR5+ CD4+ T cells are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Autoimmune diseases; Tfh; Lymphoid tissue; Humoral immunity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000500302

Imbalanced expression of functional surface molecules in regulatory and effector T cells in systemic lupus erythematosus
Provedor de dados: 56
Autores: Mesquita Júnior,D.; Cruvinel,W.M.; Araujo,J.A.P.; Salmazi,K.C.; Kallas,E.G.; Andrade,L.E.C.
Regulatory T (TREG) cells play an important role in maintaining immune tolerance and avoiding autoimmunity. We analyzed the expression of membrane molecules in TREG and effector T cells in systemic lupus erythematosus (SLE). TREG and effector T cells were analyzed for the expression of CTLA-4, PD1, CD28, CD95, GITR, HLA-DR, OX40, CD40L, and CD45RO in 26 patients with active disease, 31 with inactive disease, and 26 healthy controls. TREG cells were defined as CD25+/highCD127Ø/lowFoxP3+, and effector T cells were defined as CD25+CD127+FoxP3Ø. The ratio of TREG to effector T cells expressing GITR, PD1, HLA-DR, OX40, CD40L, and CD45RO was determined in the three groups. The frequency of TREG cells was similar in patients with SLE and controls. However, SLE...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Systemic lupus erythematosus; T lymphocytes; Regulatory T cells; Effector T cells.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000800662

Colocalization of coilin and nucleolar proteins in Cajal body-like structures of micronucleated PtK2 cells
Provedor de dados: 56
Autores: Silva,N.P.; Christofolini,D.M.; Mortara,R.A.; Andrade,L.E.C.
Cajal bodies (CB) are ubiquitous nuclear structures involved in the biogenesis of small nuclear ribonucleoproteins and show narrow association with the nucleolus. To identify possible relationships between CB and the nucleolus, the localization of coilin, a marker of CB, and of a set of nucleolar proteins was investigated in cultured PtK2 cells undergoing micronucleation. Nocodazol-induced micronucleated cells were examined by double indirect immunofluorescence with antibodies against coilin, fibrillarin, NOR-90/hUBF, RNA polymerase I, PM/Scl, and To/Th. Cells were imaged on a BioRad 1024-UV confocal system attached to a Zeiss Axiovert 100 microscope. Since PtK2 cells possess only one nucleolus organizer region, micronucleated cells presented only one or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cajal body; Coiled body; Micronuclei; Cell nucleolus; Nucleolus organizer region; RNA polymerase I; Nucleolar proteins.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000700008

Autoimmune diseases in the TH17 era
Provedor de dados: 56
Autores: Mesquita Jr.,D.; Cruvinel,W.M.; Câmara,N.O.S.; Kállas,E.G.; Andrade,L.E.C.
A new subtype of CD4+ T lymphocytes characterized by the production of interleukin 17, i.e., TH17 cells, has been recently described. This novel T cell subset is distinct from type 1 and type 2 T helper cells. The major feature of this subpopulation is to generate significant amounts of pro-inflammatory cytokines, therefore appearing to be critically involved in protection against infection caused by extracellular microorganisms, and in the pathogenesis of autoimmune diseases and allergy. The dynamic balance among subsets of T cells is important for the modulation of several steps of the immune response. Disturbances in this balance may cause a shift from normal immunologic physiology to the development of immune-mediated disorders. In autoimmune diseases,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Autoimmune diseases; Cytokines; TH17 cells; IL-17; IL-22; IL-23.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000600002

Antibodies to citrullinated peptides are not associated with the rate of joint destruction in patients with a well-established diagnosis of rheumatoid arthritis
Provedor de dados: 56
Autores: Nieto-Colonia,A.M.; Santos,W.S.; Keusseyan,S.P.; Caldana,W.; Fernandes,A.R.C.; Andrade,L.E.C.
Antibodies to citrullinated peptides are highly specific for rheumatoid arthritis (RA) and represent a significant risk factor for undifferentiated polyarthritis. This prognostic ability may be related to the very diagnostic performance of these autoantibodies, since RA is a more erosive disease than other forms of arthritis. The present study evaluated an association of antibodies to citrullinated peptides and the rate of joint destruction in patients with a well-established diagnosis of RA. Seventy-one patients with RA were evaluated in 1994 and again in 2002 (functional class, joint count, Health Assessment Questionnaire score, hands X-ray). Autoantibodies (rheumatoid factor (RF), anti-perinuclear factor, anti-cyclic citrullinated peptide (CCP)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rheumatoid arthritis; Rheumatoid factor; Autoantibodies; Citrullinated peptides; Disease severity; Joint imaging.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000300002