Red blood cell populations and membrane levels of peroxiredoxin 2 as candidate biomarkers to reveal blood doping

Red blood cell populations and membrane levels of peroxiredoxin 2 as candidate biomarkers to reveal blood doping / Cristina Marrocco, Valeria Pallotta, Angelo D'alessandro, Gilda Alves, Lello Zolla. - (Blood Transfusion 10 (2012) Supplement 2 (May); p. s71-s77)

  • PMID: 22890272
  • PMCID: PMC3418622
  • DOI: 10.2450/2012.011S


Abstract

Background: Blood doping represents one main trend in doping strategies. Blood doping refers to the practice of boosting the number of red blood cells (RBCs) in the bloodstream in order to enhance athletic performance, by means of blood transfusions, administration of erythropoiesis-stimulating substances, blood substitutes, natural or artificial altitude facilities, and innovative gene therapies. While detection of recombinant EPO and homologous transfusion is already feasible through electrophoretic, mass spectrometry or flow cytometry-based approaches, no method is currently available to tackle doping strategies relying on autologous transfusions.

Materials and methods: We exploited an in vitro model of autologous transfusion through a 1:10 dilution of concentrated RBCs after 30 days of storage upon appropriate dilution in freshly withdrawn RBCs from the same donor. Western blot towards membrane Prdx2 and Percoll density gradients were exploited to assess their suitability as biomarkers of transfusion.

Results: Membrane Prdx2 was visible in day 30 samples albeit not in day 0, while it was still visible in the 1:10 dilution of day 30 in day 0 RBCs. Cell gradients also highlighted changes in the profile of the RBC subpopulations upon dilution of stored RBCs in the fresh ones.

Discussion: From this preliminary in vitro investigation it emerges that Prdx2 and RBC populations might be further tested as candidate biomarkers of blood doping through autologous transfusion, though it is yet to be assessed whether the kinetics in vivo of Prdx2 exposure in the membrane of transfused RBCs will endow a sufficient time-window to allow reliable anti-doping testing.

Original document

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Science
Study
Date
23 May 2012
Arbitrator
Alves, Gilda
D'alessandro, Angelo
Marrocco, Cristina
Pallotta, Valeria
Zolla, Lello
Country
Brazil
Italy
Language
English
Other organisations
Instituto Nacional de Câncer José Alencar Gomes da Silva (INCA) - Brazilian National Cancer Institute
Università degli Studi della Tuscia (UNITUS) - Tuscia University
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Blood testing method
Testing method development
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Blood doping
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Scientific article
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15 July 2021
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