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Registros recuperados: 7
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An immunohistochemical, clinical and electroneuromyographic correlative study of the neural markers in the neuritic form of leprosy BJMBR
Antunes,S.L.G.; Chimelli,L.M.; Rabello,E.T.; Valentim,V.C.; Corte-Real,S.; Sarno,E.N.; Jardim,M.R..
The nerve biopsies of 11 patients with pure neuritic leprosy were submitted to routine diagnostic procedures and immunoperoxidase staining with antibodies against axonal (neurofilament, nerve growth factor receptor (NGFr), and protein gene product (PGP) 9.5) and Schwann cell (myelin basic protein, S-100 protein, and NGFr) markers. Two pairs of non-adjacent histological cross-sections of the peripheral nerve were removed for quantification. All the fascicles of the nerve were examined with a 10X-ocular and 40X-objective lens. The immunohistochemistry results were compared to the results of semithin section analysis and clinical and electroneuromyographic data. Neurofilament staining was reduced in 100% of the neuritic biopsies. NGFr positivity was also...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neurofilament protein; Nerve growth factor receptor; S-100 protein; Myelin basic protein; Gene product 9.5; Neuritic leprosy; Peripheral neuropathy.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000800010
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Double-blind trial of the efficacy of pentoxifylline vs thalidomide for the treatment of type II reaction in leprosy BJMBR
Sales,A.M.; Matos,H.J.de; Nery,J.A.C.; Duppre,N.C.; Sampaio,E.P.; Sarno,E.N..
Type II reaction in leprosy, or erythema nodosum leprosum (ENL), is often characterized by severe clinical symptoms together with nerve function impairment leading to permanent disabilities. Thalidomide has been shown to be a highly effective drug for the treatment of ENL. It is, however, contraindicated for women of childbearing age due to its teratogenicity. On the other hand, pentoxifylline, used to treat hypercoagulable states, is not teratogenic and, like thalidomide, can inhibit the synthesis of tumor necrosis factor-a and other cytokines. In the present randomized double-blind clinical study we compared the effectiveness of orally administered pentoxifylline vs thalidomide in treating type II reaction in 44 patients. Daily doses of 300 mg...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Leprosy; Reactional episodes; Therapy; Pentoxifylline; Thalidomide.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000200011
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Expression and cytokine secretion in the states of immune reactivation in leprosy BJMBR
Sampaio,E.P.; Sarno,E.N..
Leprosy is a chronic inflammatory disease caused by Mycobacterium leprae. The human response to this pathogen exhibits intriguing aspects which are up to now not well understood. The present study discusses the probable mechanisms involved in T cell-specific unresponsiveness observed in lepromatous patients. Analysis of the cytokine profile either in blood leukocytes or in skin specimens taken from leprosy lesions indicates that some parameters of Th1 immune response are present in lepromatous patients under reactional states
Tipo: Info:eu-repo/semantics/article Palavras-chave: Eprosy; Reactions; Cytokines.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000100009
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Further biochemical characterization of Mycobacterium leprae laminin-binding proteins BJMBR
Marques,M.A.M.; Mahapatra,S.; Sarno,E.N.; Santos,S.; Spencer,J.S.; Brennan,P.J.; Pessolani,M.C.V..
It has been demonstrated that the alpha2 chain of laminin-2 present on the surface of Schwann cells is involved in the process of attachment of Mycobacterium leprae to these cells. Searching for M. leprae laminin-binding molecules, in a previous study we isolated and characterized the cationic proteins histone-like protein (Hlp) and ribosomal proteins S4 and S5 as potential adhesins involved in M. leprae-Schwann cell interaction. Hlp was shown to bind alpha2-laminins and to greatly enhance the attachment of mycobacteria to ST88-14 Schwann cells. In the present study, we investigated the laminin-binding capacity of the ribosomal proteins S4 and S5. The genes coding for these proteins were PCR amplified and their recombinant products were shown to bind...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycobacterium leprae; Laminin; Adhesion; Schwann cell; Ribosomal protein; Histone.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000400004
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Normal skin of HIV-infected individuals contains increased numbers of dermal CD8 T cells and normal numbers of Langerhans cells BJMBR
Galhardo,M.C.G.; Alvarenga,F.F.; Schueler,G.; Perez,M.; Morgado,M.G.; Ferreira,H.; Azevedo,L.M.S.; Sampaio,E.P.; Sarno,E.N..
Dysregulation of the skin immune system (SIS) could explain the high prevalence of skin disorders in HIV+ individuals. The present study was carried out to determine whether alterations in the cell population of SIS and epidermal immunoactivation occur in the normal skin of HIV+ individuals. Forty-five biopsies were taken from the normal upper arm skin of 45 HIV+ patients and of 15 healthy controls. HIV+ individuals were divided into three categories according to their CD4 cell blood count (<200, 200-499 and ³500/µl). Hematoxylin-eosin was used to stain tissue sections for morphological analysis and immunohistochemistry was used for the evaluation of the frequency of macrophages, Langerhans cells, and CD lymphocyte subsets. In addition, semiquantitative...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HIV; Skin immune system; CD8 T cells; CD4-CD8 ratio; Langerhans cells.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000500017
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Patterns of intracellular cytokines in CD4 and CD8 T cells from patients with mycobacterial infections BJMBR
Antas,P.R.Z.; Sales,J.S.; Pereira,K.C.; Oliveira,E.B.; Cunha,K.S.; Sarno,E.N.; Sampaio,E.P..
Using a short-term bulk culture protocol designed for an intracellular-staining method based on a flow cytometry approach to the frequencies of cytokine-producing cells from tuberculosis and leprosy patients, we found distinct patterns of T cell subset expression. The method also reveals the profile of peak cytokine production and can provide simultaneous information about the phenotype of cytokine-producing cells, providing a reliable assay for monitoring the immunity of these patients. The immune response of Mycobacterium leprae and purified protein derivative (PPD) in vitro to a panel of mycobacteria-infected patients from an endemic area was assessed in primary mononuclear cell cultures. The kinetics and source of the cytokine pattern were measured at...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tuberculosis; Leprosy; IFN-gamma; TNF-alpha; Anti-hCD28 mAb.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000800003
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Thalidomide protects mice against LPS-induced shock BJMBR
Moreira,A.L.; Wang,J.; Sarno,E.N.; Kaplan,G..
Thalidomide has been shown to selectively inhibit TNF-<!-- $MVD$:face("Symbol") --><FONT FACE="Symbol">a</font> production in vitro by lipopolysaccharide (LPS)-stimulated monocytes. TNF-<!-- $MVD$:face("Symbol") --><FONT FACE="Symbol">a</font> has been shown to play a pivotal role in the pathophysiology of endotoxic shock. Using a mouse model of LPS-induced shock, we investigated the effects of thalidomide on the production of TNF-<!-- $MVD$:face("Symbol") --><FONT FACE="Symbol">a</font> and other cytokines and on animal survival. After injection of 100-350 µg LPS into mice, cytokines including TNF-<!-- $MVD$:face("Symbol") --><FONT FACE="Symbol">a</font>, IL-6, IL-10, IL-1ß, GM-CSF...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Endotoxic shock; Thalidomide; Cytokines; Inflammation.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001000010
Registros recuperados: 7
Primeira ... 1 ... Última
 

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