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

Lapchak, PA ; Kirkeby, Agnete LU ; Zivin, JA and Sager, TN (2008) In Behavioural Brain Research 1238. p.208-214
Abstract
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... (More)
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. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
stroke, rabbits
in
Behavioural Brain Research
volume
1238
article number
doi: 10.1016/j.brainres.2008.08.017
pages
208 - 214
publisher
Elsevier
external identifiers
  • scopus:53549109121
  • pmid:18761001
ISSN
0166-4328
DOI
10.1016/j.brainres.2008.08.017
language
English
LU publication?
yes
id
f5b361dc-db69-4163-8504-7b07298eb3f6
date added to LUP
2016-06-09 14:59:59
date last changed
2022-02-06 21:16:53
@article{f5b361dc-db69-4163-8504-7b07298eb3f6,
  abstract     = {{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&lt;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.}},
  author       = {{Lapchak, PA and Kirkeby, Agnete and Zivin, JA and Sager, TN}},
  issn         = {{0166-4328}},
  keywords     = {{stroke; rabbits}},
  language     = {{eng}},
  month        = {{10}},
  pages        = {{208--214}},
  publisher    = {{Elsevier}},
  series       = {{Behavioural Brain Research}},
  title        = {{Therapeutic window for nonerythropoietic carbamylated-erythropoietin to improve motor function following multiple infarct ischemic strokes in New Zealand white rabbits}},
  url          = {{http://dx.doi.org/10.1016/j.brainres.2008.08.017}},
  doi          = {{10.1016/j.brainres.2008.08.017}},
  volume       = {{1238}},
  year         = {{2008}},
}