Abstract：
:Zearalenone, a cereal mycotoxin with mycoestrogen activity and effect on fertility, is known to trigger apoptosis of a variety of nucleated cell types including hematopoietic progenitor cells. In analogy to apoptosis of nucleated cells, eryptosis, the suicidal death of erythrocytes, leads to cell shrinkage and cell membrane scrambling with phosphatidylserine exposure at the erythrocyte surface. The most important stimulator of eryptosis is an increase in cytosolic Ca(2+) activity ([Ca(2+)]i). The present study explored whether zearalenone triggers eryptosis. Erythrocyte volume was estimated from forward scatter, phosphatidylserine exposure at the erythrocyte surface from annexin-V binding, hemolysis from hemoglobin release, and [Ca(2+)]i from Fluo3 fluorescence. A 48-h exposure to zearalenone (≥25 μM) was followed by a significant increase in [Ca(2+)]i and annexin-V binding, and a significant decrease in forward scatter. The effect on annexin-V binding was significantly blunted in the nominal absence of extracellular Ca(2+). Zearalenone stimulates the suicidal erythrocyte death, an effect at least partially due to stimulation of Ca(2+) entry.
journal_name
Arch Toxicoljournal_title
Archives of toxicologyauthors
Jilani K,Lang Fdoi
10.1007/s00204-013-1037-1subject
Has Abstractpub_date
2013-10-01 00:00:00pages
1821-8issue
10eissn
0340-5761issn
1432-0738journal_volume
87pub_type
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