Oxidative damage in lymphocytes of copper smelter workers correlated to higher levels of excreted arsenic.
Mediators Inflamm
; 2010: 403830, 2010.
Article
em En
| MEDLINE
| ID: mdl-21253489
Arsenic has been associated with multiple harmful effects at the cellular level. Indirectly these defects could be related to impairment of the integrity of the immune system, in particular in lymphoid population. To characterize the effect of Arsenic on redox status on this population, copper smelter workers and arsenic unexposed donors were recruited for this study. We analyzed urine samples and lymphocyte enriched fractions from donors to determinate arsenic levels and lymphocyte proliferation. Moreover, we studied the presence of oxidative markers MDA, vitamin E and SOD activity in donor plasma. Here we demonstrated that in human beings exposed to high arsenic concentrations, lymphocyte MDA and arsenic urinary levels showed a positive correlation with SOD activity, and a negative correlation with vitamin E serum levels. Strikingly, lymphocytes from the arsenic exposed population respond to a polyclonal stimulator, phytohemaglutinin, with higher rates of thymidine incorporation than lymphocytes of a control population. As well, similar in vitro responses to arsenic were observed using a T cell line. Our results suggest that chronic human exposure to arsenic induces oxidative damage in lymphocytes and could be considered more relevant than evaluation of T cell surveillance.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Arsênio
/
Linfócitos
/
Exposição Ocupacional
/
Cobre
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Adult
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Mediators Inflamm
Assunto da revista:
BIOQUIMICA
/
PATOLOGIA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Chile
País de publicação:
Estados Unidos