Document Detail


Curcumin induced suicidal erythrocyte death.
MedLine Citation:
PMID:  17310109     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The natural nutrient component Curcumin with anti-inflammatory and antitumor activity has previously been shown to stimulate apoptosis of several nucleated cell types. The present study has been performed to explore whether Curcumin could similarly induce suicidal death of erythrocytes or eryptosis, which is characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine exposure at the erythrocyte surface. Phosphatidylserine exposing cells are phagocytosed and thus rapidly cleared from circulating blood. Erythrocyte membrane scrambling may be triggered by increase of cytosolic Ca(2+) activity or formation of ceramide. To test for eryptosis, erythrocyte phosphatidylserine exposure has been estimated from annexin V binding, and erythrocyte volume from forward scatter in FACS analysis. Exposure of erythrocytes to Curcumin (= 1 microM) increased annexin V binding and decreased forward scatter, pointing to phosphatidylserine exposure at the cell surface and cell shrinkage. According to Fluo3 fluorescence Curcumin increased cytosolic Ca(2+) activity and according to immunofluorescence Curcumin increased ceramide formation. As shown previously, hypertonic shock (addition of 550mM sucrose), chloride removal and glucose depletion decreased the forward scatter and increased annexin V binding. The effects on annexin binding were enhanced in the presence of Curcumin. Exposure to Curcumin did, however, not significantly enhance the shrinking effect of hypertonic shock or Cl(-) removal and reversed the shrinking effect of glucose withdrawal. The present observations disclose a proeryptotic effect of Curcumin which may affect the life span of circulating erythrocytes.
Authors:
Peter J Bentzen; Elisabeth Lang; Florian Lang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology     Volume:  19     ISSN:  1015-8987     ISO Abbreviation:  Cell. Physiol. Biochem.     Publication Date:  2007  
Date Detail:
Created Date:  2007-02-20     Completed Date:  2007-04-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9113221     Medline TA:  Cell Physiol Biochem     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  153-64     Citation Subset:  IM    
Copyright Information:
Copyright 2007 S. Karger AG, Basel.
Affiliation:
Department of Physiology, University of Tübingen, Tübingen, Germany.
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MeSH Terms
Descriptor/Qualifier:
Annexin A5 / metabolism
Apoptosis*
Calcium / metabolism*
Cell Size
Ceramides / metabolism
Curcumin / pharmacology*
Cytosol / metabolism*
Dose-Response Relationship, Drug
Erythrocytes / drug effects*,  metabolism
Humans
Osmosis
Phosphatidylserines / metabolism
Chemical
Reg. No./Substance:
0/Annexin A5; 0/Ceramides; 0/Phosphatidylserines; 458-37-7/Curcumin; 7440-70-2/Calcium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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