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| 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 |
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| 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 |
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| Chinen,R.; Câmara,N.O.S.; Nishida,S.; Silva,M.S.; Rodrigues,D.A.; Pereira,A.B.; Pacheco-Silva,A.. |
| Significant improvements have been noted in heart transplantation with the advent of cyclosporine. However, cyclosporine use is associated with significant side effects, such as chronic renal failure. We were interested in evaluating the incidence of long-term renal dysfunction in heart transplant recipients. Fifty-three heart transplant recipients were enrolled in the study. Forty-three patients completed the entire evaluation and follow-up. Glomerular (serum creatinine, creatinine clearance measured, and creatinine clearance calculated) and tubular functions (urinary retinol-binding protein, uRBP) were re-analyzed after 18 months. At the enrollment time, the prevalence of renal failure ranged from 37.7 to 54% according to criteria used to define it... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Renal function; Urinary retinol-binding protein; Heart transplant; Graft survival; Chronic renal failure. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006001000006 |
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| Moscoso-Solorzano,G.; Câmara,N.O.S.; Franco,M.F.; Araújo,S.; Ortega,F.; Pacheco-Silva,A.; Mastroianni-Kirsztajn,G.. |
| Interstitial fibrosis and tubular atrophy (IF/TA) are the most common cause of renal graft failure. Chronic transplant glomerulopathy (CTG) is present in approximately 1.5-3.0% of all renal grafts. We retrospectively studied the contribution of CTG and recurrent post-transplant glomerulopathies (RGN) to graft loss. We analyzed 123 patients with chronic renal allograft dysfunction and divided them into three groups: CTG (N = 37), RGN (N = 21), and IF/TA (N = 65). Demographic data were analyzed and the variables related to graft function identified by statistical methods. CTG had a significantly lower allograft survival than IF/TA. In a multivariate analysis, protective factors for allograft outcomes were: use of angiotensin-converting enzyme inhibitor... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Kidney transplantation; Chronic allograft nephropathy; Glomerulonephritis; Transplant glomerulopathy. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000600006 |
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