Therapeutic window for nonerythropoietic carbamylated-erythropoietin to improve motor function following multiple infarct ischemic strokes in New Zealand white rabbits

Research output: Contribution to journalArticle


Carbamylated erythropoietin (CEPO) is a novel neuroprotective agent that does not bind to the classical erythropoietin receptor or affect hematocrit. Since CEPO has not been systematically studied in a fully blinded and randomized manner in an embolic stroke model, we determined if CEPO would be useful to attenuate clinical deficits associated with multiple infarct ischemia using the rabbit small clot embolic stroke model (RSCEM). Rabbits were embolized and treated with vehicle or CEPO within 6 h of embolization and behavioral analysis was conducted 48 h after embolization. Using quantal analysis, we determined the quantity of blood clot (mg) in brain that produce neurologic dysfunction in 50% of the rabbits (P(50)), with intervention considered beneficial if it increased the P(50) compared to controls. CEPO administered between 5 min and 3 h after embolization significantly (p<0.05) improved behavioral function and increased the P(50) value by 55-216%. However, CEPO administration did not improve behavior when administered 6 h following embolization. In conclusion, in the RSCEM, CEPO had a therapeutic window of at least 3 h, where it effectively improved clinical rating scores and motor function. Our results suggest that CEPO may be useful to treat acute ischemic stroke and supports the study of CEPO in stroke patients.


External organisations
  • University of California System
  • H. Lundbeck A/S
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Cardiac and Cardiovascular Systems


  • stroke, rabbits
Original languageEnglish
Article numberdoi: 10.1016/j.brainres.2008.08.017
Pages (from-to)208-214
JournalBehavioural Brain Research
Publication statusPublished - 2008 Oct 31
Publication categoryResearch