Abstract:
:Recombinant human erythropoietin (rHuEPO) is frequently abused by athletes as a performance-enhancing drug, despite being prohibited by the World Anti-Doping Agency. Although the methods to detect blood doping, including rHuEPO injections, have improved in recent years, they remain imperfect. In a proof-of-principle study, we identified, replicated, and validated the whole blood transcriptional signature of rHuEPO in endurance-trained Caucasian males at sea level (n = 18) and Kenyan endurance runners at moderate altitude (n = 20), all of whom received rHuEPO injections for 4 wk. Transcriptional profiling shows that hundreds of transcripts were altered by rHuEPO in both cohorts. The main regulated expression pattern, observed in all participants, was characterized by a "rebound" effect with a profound upregulation during rHuEPO and a subsequent downregulation up to 4 wk postadministration. The functions of the identified genes were mainly related to the functional and structural properties of the red blood cell. Of the genes identified to be differentially expressed during and post-rHuEPO, we further confirmed a whole blood 34-transcript signature that can distinguish between samples collected pre-, during, and post-rHuEPO administration. By providing biomarkers that can reveal rHuEPO use, our findings represent an advance in the development of new methods for the detection of blood doping.
journal_name
Physiol Genomicsjournal_title
Physiological genomicsauthors
Durussel J,Haile DW,Mooses K,Daskalaki E,Beattie W,Mooses M,Mekonen W,Ongaro N,Anjila E,Patel RK,Padmanabhan N,McBride MW,McClure JD,Pitsiladis YPdoi
10.1152/physiolgenomics.00108.2015subject
Has Abstractpub_date
2016-03-01 00:00:00pages
202-9issue
3eissn
1094-8341issn
1531-2267pii
physiolgenomics.00108.2015journal_volume
48pub_type
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