Document Detail

The pro-apoptotic effect of hydroquinone in human neutrophils and eosinophils.
MedLine Citation:
PMID:  20946948     Owner:  NLM     Status:  In-Process    
Hydroquinone (HQ) is a benzene metabolite that is involved in hematopoiesis via its accumulation into bone marrow. HQ also acts as a toxic agent that influences various immune responses. Both neutrophils and eosinophils function as important leukocytes in immunological regulation and immune diseases. In this study, we examined the toxic effects of HQ on the apoptosis of human neutrophils and eosinophils isolated from the blood of healthy donors. HQ markedly increased the apoptosis of neutrophils and eosinophils in a concentration- and a time-dependent manner. The pro-apoptotic effect is involved in activation of caspase 9 and caspase 3. Reactive oxygen species (ROS) production was enhanced after HQ treatment in a dose-dependent manner. In addition, HQ upregulated the release of IL-8 and MCP-1 from neutrophils and eosinophils, respectively. Taken together, the results of this study demonstrated that HQ strongly induces the apoptosis of neutrophils and eosinophils through the caspase 9/3-dependent pathway and the increased ROS production. HQ exerts a cytotoxic effect in human neutrophils and eosinophils and may impair the regulation of immune responses.
Eun Ju Yang; Ji-Sook Lee; Chi-Young Yun; In Sik Kim
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-10-12
Journal Detail:
Title:  Toxicology in vitro : an international journal published in association with BIBRA     Volume:  25     ISSN:  1879-3177     ISO Abbreviation:  Toxicol In Vitro     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2010-12-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8712158     Medline TA:  Toxicol In Vitro     Country:  England    
Other Details:
Languages:  eng     Pagination:  131-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Department of Biomedical Laboratory Science, School of Medicine, Eulji University and Eulji University Medical Sciences Research Center, Jung-gu, Daejeon, Republic of Korea.
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