Increased release of free Fe ions in human erythrocytes during aging in the circulation.

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  • Author(s): Ando K;Ando K; Ogawa K; Misaki S; Kikugawa K
  • Source:
    Free radical research [Free Radic Res] 2002 Oct; Vol. 36 (10), pp. 1079-84.
  • Publication Type:
    Journal Article; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Informa Healthcare Country of Publication: England NLM ID: 9423872 Publication Model: Print Cited Medium: Print ISSN: 1071-5762 (Print) Linking ISSN: 10292470 NLM ISO Abbreviation: Free Radic Res Subsets: MEDLINE
    • Publication Information:
      Publication: London : Informa Healthcare
      Original Publication: Yverdon, Switzerland : New York, NY : Harwood Academic ; distributed by STBS Ltd., c1994-
    • Subject Terms:
      Erythrocyte Aging*; Erythrocytes/*chemistry ; Iron/*blood; Bleomycin/chemistry ; Cell Separation ; Centrifugation, Density Gradient ; Chromatography, High Pressure Liquid ; Deferoxamine/chemistry ; Ferrous Compounds/blood ; Hemoglobins/chemistry ; Humans ; Hydrogen Peroxide/pharmacology ; Iron/chemistry ; Iron Chelating Agents/chemistry ; Oxidation-Reduction ; Oxidative Stress ; Solutions ; Thiobarbituric Acid Reactive Substances/analysis
    • Abstract:
      We investigated whether free Fe ions were released in erythrocytes during aging process in the circulation. Young and senescent erythrocytes were separated from freshly drawn human blood by Percoll density gradient centrifugation. Two different methods were employed for determination of free Fe ions in erythrocytes, desferrioxamine (DFO) method and bleomycin method. DFO-chelatable Fe ions were detected in whole erythrocytes from 2 donors, and the DFO-chelatable free Fe ion levels in senescent erythrocytes were higher than those in young erythrocytes. Bleomycin-sensitive Fe ions, which was rather lower than DFO-chelatable Fe ions, were also detected in whole erythrocytes from 5 donors, and the free Fe ion levels in senescent erythrocytes were also higher than those in young erythrocytes. Free Fe ions may be derived from oxidative damage of hemoglobin, because treatment of whole erythrocytes or purified oxyhemoglobin with hydrogen peroxide gave increased free Fe ions. The results indicated that free Fe ions were released from erythrocytes during aging process in the circulation. Released free Fe ions would promote oxidative damages of the cells during aging process.
    • Accession Number:
      0 (Ferrous Compounds)
      0 (Hemoglobins)
      0 (Iron Chelating Agents)
      0 (Solutions)
      0 (Thiobarbituric Acid Reactive Substances)
      11056-06-7 (Bleomycin)
      BBX060AN9V (Hydrogen Peroxide)
      E1UOL152H7 (Iron)
      J06Y7MXW4D (Deferoxamine)
    • Publication Date:
      Date Created: 20030109 Date Completed: 20030414 Latest Revision: 20190922
    • Publication Date:
      20250114
    • Accession Number:
      10.1080/1071576021000028307
    • Accession Number:
      12516879