Abstract:
OBJECTIVES:To investigate the effects of recombinant human erythropoietin on brain oxygenation in a model of diffuse traumatic brain injury. DESIGN:Adult male Wistar rats. SETTING:Neurosciences and physiology laboratories. INTERVENTIONS:Thirty minutes after diffuse traumatic brain injury (impact-acceleration model), rats were intravenously administered with either a saline solution or a recombinant human erythropoietin (5000 IU/kg). A third group received no traumatic brain injury insult (sham-operated). MEASUREMENTS AND MAIN RESULTS:Three series of experiments were conducted 2 hours after traumatic brain injury to investigate: 1) the effect of recombinant human erythropoietin on brain edema using diffusion-weighted magnetic resonance imaging and measurements of apparent diffusion coefficient (n = 11 rats per group); local brain oxygen saturation, mean transit time, and blood volume fraction were subsequently measured using a multiparametric magnetic resonance-based approach to estimate brain oxygenation and brain perfusion in the neocortex and caudoputamen; 2) the effect of recombinant human erythropoietin on brain tissue PO₂ in similar experiments (n = 5 rats per group); and 3) the cortical ultrastructural changes after treatment (n = 1 rat per group). Compared with the sham-operated group, traumatic brain injury saline rats showed a significant decrease in local brain oxygen saturation and in brain tissue PO₂ alongside brain edema formation and microvascular lumen collapse at H2. Treatment with recombinant human erythropoietin reversed all of these traumatic brain injury-induced changes. Brain perfusion (mean transit time and blood volume fraction) was comparable between the three groups of animals. CONCLUSION:Our findings indicate that brain hypoxia can be related to microcirculatory derangements and cell edema without evidence of brain ischemia. These changes were reversed with post-traumatic administration of recombinant human erythropoietin, thus offering new perspectives in the use of this drug in brain injury.
journal_name
Crit Care Medjournal_title
Critical care medicineauthors
Bouzat P,Millet A,Boue Y,Pernet-Gallay K,Trouve-Buisson T,Gaide-Chevronnay L,Barbier EL,Payen JFdoi
10.1097/CCM.0b013e31827ca64esubject
Has Abstractpub_date
2013-05-01 00:00:00pages
1316-24issue
5eissn
0090-3493issn
1530-0293pii
00003246-201305000-00018journal_volume
41pub_type
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doi:10.1097/00003246-199907000-00027
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journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198901000-00011
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journal_title:Critical care medicine
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doi:10.1097/CCM.0000000000001078
更新日期:2015-09-01 00:00:00
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journal_title:Critical care medicine
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doi:10.1097/00003246-199711000-00025
更新日期:1997-11-01 00:00:00
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journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e31827ca2fa
更新日期:2013-05-01 00:00:00
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pub_type: 杂志文章
doi:10.1097/01.CCM.0000217218.51381.49
更新日期:2006-07-01 00:00:00
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journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199612000-00014
更新日期:1996-12-01 00:00:00
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journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199011000-00007
更新日期:1990-11-01 00:00:00
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journal_title:Critical care medicine
pub_type: 杂志文章
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更新日期:1994-10-01 00:00:00
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doi:10.1097/CCM.0000000000003354
更新日期:2018-11-01 00:00:00
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doi:10.1097/01.CCM.0000243797.42346.64
更新日期:2006-12-01 00:00:00
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journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/01.ccm.0000284503.88148.6f
更新日期:2007-11-01 00:00:00
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doi:10.1097/01.ccm.0000280570.82885.32
更新日期:2007-09-01 00:00:00
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doi:10.1097/01.ccm.0000114575.08269.f6
更新日期:2004-03-01 00:00:00
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journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198401000-00011
更新日期:1984-01-01 00:00:00
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pub_type: 评论,杂志文章
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更新日期:2006-04-01 00:00:00
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doi:10.1097/CCM.0b013e3182373134
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更新日期:2019-12-01 00:00:00
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doi:10.1097/CCM.0b013e3181760e5d
更新日期:2008-06-01 00:00:00
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pub_type: 杂志文章
doi:10.1097/01.CCM.0000215111.85483.BD
更新日期:2006-05-01 00:00:00
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journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200104000-00009
更新日期:2001-04-01 00:00:00
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journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199309000-00009
更新日期:1993-09-01 00:00:00
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journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199603000-00021
更新日期:1996-03-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2015-01-01 00:00:00
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pub_type: 杂志文章
doi:10.1097/00003246-199108000-00013
更新日期:1991-08-01 00:00:00
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更新日期:2003-10-01 00:00:00