Linked Life Data

12686498

Source:http://linkedlifedata.com/resource/pubmed/id/12686498

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2003-4-10
pubmed:abstractText
Hydroquinone (HQ) is a chemical used as a reducing agent, antioxidant, polymerization inhibitor, and chemical intermediate. It has a minor use as a bleaching agent in dermatologic preparations. HQ also occurs as a main metabolite of benzene. In the present study, HQ-induced apoptosis was evaluated by cell morphology changes, determination of phosphatidylserine (PS) externalization and analysis of sub-G1 cells. The effect of HQ on intracellular thiol concentration, including glutathione and protein thiol, and the effect of N-acetylcysteine (NAC) and buthionine sulfoximine (BSO) pretreatment on HQ-induced apoptosis were investigated. The results showed that HQ was able to induce typical apoptosis in HEK293 cells (human embryonic kidney cells) in a dose-dependent manner. Intracellular thiol, including glutathione and protein thiol, was decreased following treatment with HQ. NAC, a precursor of intracellular GSH synthesis, significantly inhibited HQ-induced apoptosis. However, BSO, a specific inhibitor of intracellular GSH synthesis, enhanced HQ-induced apoptosis significantly. Taken together, the present study demonstrates that HQ is able to induce apoptosis in HEK293 cells, most probably through depletion of intracellular thiol. The results also suggest that, at least in HEK293 cells, the control of intracellular redox homeostasis has a central role in the regulation of cell death induced by HQ.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0009-2797
pubmed:author
pubmed:issnType
Print
pubmed:day
6
pubmed:volume
145
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
225-33
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
The role of thiol reduction in hydroquinone-induced apoptosis in HEK293 cells.
pubmed:affiliation
Department of Toxicology, School of Public Health, Peking University, 38 Xueyuan Road, Beijing 100083, People's Republic of China.
pubmed:publicationType
Journal Article