Consulta: creatorFacets:"Ferreira,H."
Registros recuperados: 3
Data/hora: 09/06/2024 11:54:04

Imunidade celular em caninos neonatos - do nascimento ao 45° dia de idade
Provedor de dados: 45
Autores: Klein,R.P.; Lourenço,M.L.G.; Moutinho,F.Q.; Takahira,R.K.; Lopes,R.S.; Martins,R.R.; Machado,L.P.; Silveira,V.F.; Ferreira,H.
O objetivo do presente trabalho foi acompanhar o desenvolvimento imunológico dos neonatos caninos, a fim de avaliar a imunidade celular pela análise dos leucócitos e linfócitos totais e das subpopulações de linfócitos T (CD4+ e CD8+) pela técnica de citometria de fluxo. Foram utilizados 30 cães neonatos de ambos os sexos, sem raça definida, aos três, 10, 17, 24, 31, 38 e 45 dias de idade. A contagem de leucócitos totais aos 45 dias (11.639±3.574) foi significativamente maior que no terceiro dia de idade (8.740±1.812) (P&lt;0,05); não houve diferença entre a contagem total de linfócitos aos 45 dias em relação ao terceiro dia de idade. Quanto às subpopulações de LT CD4+ e LT CD8+, os percentuais de LT CD4+, aos três dias de idade (24,9±16,8%), foram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caninos; Células linfocíticas; Neonatologia.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000300745

Normal skin of HIV-infected individuals contains increased numbers of dermal CD8 T cells and normal numbers of Langerhans cells
Provedor de dados: 56
Autores: 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 (&lt;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

Central lead administration inhibits water intake and sodium appetite in rats
Provedor de dados: 56
Autores: De-Castro-e-Silva,E.J.; Castro,L.; Luz,C.P.; Ferreira,H.; Lima,A.K.S.; Souza,F.S.F.; Maldonado,I.; Macêdo,D.F.; Ferreira,M.G.; Bandeira,I.P.V.; Amor,A.L.M.; Carvalho,F.L.Q.; Rocha Jr.,M.A.; Fregoneze,J.B.
We have demonstrated that acute third ventricle injections of lead acetate (PbAc) exert a powerful antidipsogenic effect and induce a significant increase in renal sodium excretion. In the present study we confirm the antidipsogenic effect of lead and demonstrate that central administration of this metal, in minute amounts, significantly reduces salt intake both during dehydration and after central angiotensinergic stimulation. Adult male Wistar rats had the third ventricle cannulated seven days before the experiments. During this period they had free access to distilled water and hypertonic saline solution (1.5%). After a 24-h period of fluid deprivation, experimental animals received third ventricle injections of PbAc (0.3, N = 8 and 3.0 nmol/rat, N =...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Lead; Angiotensin II; Water intake; Sodium intake; Rats.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001000011