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Molecular epidemiology of type 1 and 2 dengue viruses in Brazil from 1988 to 2001 BJMBR
Pires Neto,R.J.; Lima,D.M.; de Paula,S.O.; Lima,C.M.; Rocco,I.M.; Fonseca,B.A.L..
Dengue is a mosquito-borne viral infection that in recent decades has become a major international public health concern. Epidemic dengue fever reemerged in Brazil in 1981. Since 1990 more than one dengue virus serotype has been circulating in this tropical country and increasing rates of dengue hemorrhagic fever and dengue shock syndrome have been detected every year. Some evidence supports the association between the introduction of a new serotype and/or genotype in a region and the appearance of dengue hemorrhagic fever. In order to study the evolutionary relationships and possible detection of the introduction of new dengue virus genotypes in Brazil in the last years, we analyzed partial nucleotide sequences of 52 Brazilian samples of both dengue type...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dengue virus; Nucleotide sequence; E/NS1 region; Molecular epidemiology; Dengue fever; Dengue hemorrhagic fever.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000600005
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The role of the SLAM-SAP signaling pathway in the modulation of CD4+ T cell responses BJMBR
Vilar,M.L.L.V.; Frutuoso,M.S.; Arruda,S.M.; Lima,D.M.; Bezerra,C.S.; Pompeu,M.M.L..
The signaling lymphocytic activation molecule (SLAM), present on the surface of hematopoietic cells, can regulate some events of the immune responses. This modulatory action is associated with the capacity of SLAM to interact with an intracytoplasmic adapter, such as SLAM-associated protein (SAP). SLAM is constitutively expressed in most of these cells, is rapidly induced after antigenic or inflammatory stimuli, and participates in the immunological synapse. Defects in the function of the SLAM-SAP pathway contribute to immunological abnormalities, resulting in autoimmune diseases, tumors of the lymphoid tissues and inadequate responses to infectious agents. Initially, the role of SLAM was investigated using an anti-SLAM monoclonal antibody (α-SLAM mAb)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SLAM; SAP; IFN-γ; Immunoreceptor; Immunomodulation.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000400002
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