Abstract：
:Many investigators have posited on the significant influence of lead on the immune system function. However, available data on this topic are not conclusive. Therefore, a study was undertaken to examine associations between lead exposure and levels of cytokines related to the T-helper (TH)-1, TH2, and TH17 types of immune response in humans. For these analyses, three population groups were examined: the first consisted of male workers exposed to lead for a short period of time (36-44 days); the second included male workers chronically exposed to lead (13 ± 10 years); and a control group that was composed of male administrative workers with blood lead levels (BLL) < 10 μg/dl. BLL were determined for all study subjects. Thereafter, serum samples were analyzed for the levels of interleukin (IL)-2 (IL-2), IL-4, IL-5, IL-12, IL-13, IL-17A, and interferon (IFN)-γ using a multi-analyte system. The results indicated that the levels of IFNγ IL-2, IL-12 (related to TH1 cells), IL-4, IL-5, IL-13 (related to TH2 cells), and IL-17A (related to TH17 cells) did not change after a short-term exposure to lead (compared to baseline). However, the levels of all of these cytokines were significantly higher in workers chronically exposed to lead than in the controls by 82%, 32%, 81%, 22%, 70%, 42%, and 17% (IFNγ, IL-2, IL-12, IL-4, IL-5, IL-13, IL-17A, respectively). From these studies, we conclude that in humans, a short-term exposure to lead does not affect levels of cytokines related to the TH1-, TH2-, and TH17-mediated immune responses, while chronic exposure modifies their levels. Taken together, these modifications do not evidence an ability of lead to promote specifically one type of immune response in an exposed host.
journal_name
J Immunotoxicoljournal_title
Journal of immunotoxicologyauthors
Dobrakowski M,Boroń M,Czuba ZP,Kasperczyk A,Machoń-Grecka A,Kasperczyk Sdoi
10.1080/1547691X.2016.1184360subject
Has Abstractpub_date
2016-11-01 00:00:00pages
770-774issue
6eissn
1547-691Xissn
1547-6901journal_volume
13pub_type
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