Effects of zinc on cell-mediated immunity in chronic hemodialysis patients

Effects of zinc on cell-mediated immunity in chronic hemodialysis patients

Autor Ribeiro, RCJ Google Scholar
Sales, VSF Google Scholar
Neves, FDR Google Scholar
Drabe, S. Google Scholar
Brandao-Neto, J. Google Scholar
Instituição Univ Fed Rio Grande Norte
Universidade de Brasília (UnB)
Universidade Federal de São Paulo (UNIFESP)
Resumo Thirteen healthy subjects and 20 hemodialysis patients were studied to observe the delayed hypersensitivity skin tests (DHSTs) and phytohemagglutinin (PHA)-stimulating lymphocyte blastogenesis. Significant differences were observed between the groups. Controls had a higher proportion of positive skin reaction than hemodialysis patients in relation to Escherichia coli (p<0.01) and tuberculin (PPD) (p<0.05). Regarding lymphocyte blastogenesis stimulated by phytohemagglutinin (PHA), cell proliferation was more accentuated in controls than hemodialysis patients (p<0.05). On the other hand, serum zinc was elevated in controls (78 +/- 8 mug/dL) in comparison to hemodialysis patients (71 +/- 33 mug/dL) (p<0.05). of the 20 hemodialysis patients, 8 patients were maintained on long-term hemodialysis before and after zinc therapy, with the aim of studying DHST and PHA-stimulating lymphocyte blastogenesis. There was a significant improvement of DHST response to E. coli antigen after 100 d of zinc treatment (p<0.01), and with the discontinuation of therapy, the DHST responses decreased back to the initial values (p<0.05). Zinc administration also increased the lymphocyte proliferation induced by PHA from 31386 +/- 3974 to 42480 +/- 5242 cpm (mean +/-SD) (p<0.05). These results indicated that zinc therapy improved in vivo and in vitro DHST and lymphocyte function of hemodialysis patients and that its discontinuation suppressed all of the benefits observed.
Palavra-chave zinc
cellular immunity
hemodialysis patients
controls
Idioma Inglês
Data de publicação 2004-06-01
Publicado em Biological Trace Element Research. Totowa: Humana Press Inc, v. 98, n. 3, p. 209-217, 2004.
ISSN 0163-4984 (Sherpa/Romeo, fator de impacto)
Publicador Humana Press Inc
Extensão 209-217
Fonte http://dx.doi.org/10.1385/BTER:98:3:209
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000221485300002
Endereço permanente http://repositorio.unifesp.br/handle/11600/27790

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