Atrazine-induced apoptosis of splenocytes in BALB/C mice.

Abstract:

BACKGROUND:Atrazine (2-chloro-4-ethytlamino-6-isopropylamine-1,3,5-triazine; ATR), is the most commonly applied broad-spectrum herbicide in the world. Unintentional overspray of ATR poses an immune function health hazard. The biomolecular mechanisms responsible for ATR-induced immunotoxicity, however, are little understood. This study presents on our investigation into the apoptosis of splenocytes in mice exposed to ATR as we explore possible immunotoxic mechanisms. METHODS:Oral doses of ATR were administered to BALB/C mice for 21 days. The histopathology, lymphocyte apoptosis and the expression of apoptosis-related proteins from the Fas/Fas ligand (FasL) apoptotic pathway were examined from spleen samples. RESULTS:Mice administered ATR exhibited a significant decrease in spleen and thymus weight. Electron microscope histology of ultrathin sections of spleen revealed degenerative micromorphology indicative of apoptosis of splenocytes. Flow cytometry revealed that the percentage of apoptotic lymphocytes increased in a dose-dependent manner after ATR treatment. Western blots identified increased expression of Fas, FasL and active caspase-3 proteins in the treatment groups. CONCLUSIONS:ATR is capable of inducing splenocytic apoptosis mediated by the Fas/FasL pathway in mice, which could be the potential mechanism underlying the immunotoxicity of ATR.

journal_name

BMC Med

journal_title

BMC medicine

authors

Zhang X,Wang M,Gao S,Ren R,Zheng J,Zhang Y

doi

10.1186/1741-7015-9-117

subject

Has Abstract

pub_date

2011-10-27 00:00:00

pages

117

issn

1741-7015

pii

1741-7015-9-117

journal_volume

9

pub_type

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