Document Detail

Immune effects of polychlorinated biphenyls, smoking and alcohol.
MedLine Citation:
PMID:  23298494     Owner:  NLM     Status:  In-Data-Review    
Polychlorinated biphenyls (PCB) have been shown to exert some immune effects. Here we analysed their effects also on immune parameters not previously studied such as TCR alpha-beta, TCR gamma-delta and regulatory T cells (Treg), taking into account the specific and cumulative interference of smoking and alcohol. The study subjects consisted of 26 male workers in a steelworks factory, employed in the electrical maintenance sector, with previous exposure to a mixture of PCB (exposed subjects), and 30 male workers with no occupational exposure to PCB (controls). All subjects were given a questionnaire and peripheral venous blood samples were taken to determine serum PCB (33 congeners), total cholesterol and triglycerides, leukocytes, total lymphocytes and the T lymphocyte subpopulations (TCR alpha-beta, TCRgamma-delta, CD4+ and Treg lymphocytes). PCB, even though at a very low concentration, were significantly higher in exposed subjects than controls, and were significantly correlated with age. Monocytes% and CD4+ were significantly reduced in the exposed subjects as compared to the controls. The serum concentration of PCB positively correlated with TCR alpha-beta, and negatively with TCRgamma-delta. Treg lymphocytes showed a positive dependence on tobacco smoking, while the monocytes percentage and CD4+ showed a negative and positive dependence, respectively, on alcohol intake. Our results seem to show some effects of slight exposure to PCB in particular reducing the relative concentration of TCRgamma-delta. This effect can favour indirectly the increase in Treg induced by smoking, the anti-inflammatory or proinflammatory/fibrogenetic/angiogenetic effect of which, exerted by produced cytokines, particularly TGF-beta, deserves further clarification.
M N D'Errico; G De Tullio; M Di Gioacchino; P Lovreglio; A Basso; I Drago; R Serra; P Apostoli; A Vacca; L Soleo
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of immunopathology and pharmacology     Volume:  25     ISSN:  0394-6320     ISO Abbreviation:  Int J Immunopathol Pharmacol     Publication Date:    2012 Oct-Dec
Date Detail:
Created Date:  2013-01-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8911335     Medline TA:  Int J Immunopathol Pharmacol     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  1041-54     Citation Subset:  IM    
Dipartimento Interdisciplinare di Medicina, Sezione di Medicina del Lavoro - E.C. Vigliani -, University of Bari, Bari, Italy.
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