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EFFECTS OF M101—AN EXTRACELLULAR HEMOGLOBIN—APPLIED DURING CARDIOPULMONARY RESUSCITATION: AN EXPERIMENTAL RODENT STUDY
During and immediately after cardiac arrest, cerebral oxygen delivery is impaired mainly by microthrombi and cerebral vasoconstriction. This may narrow capillaries so much that it might impede the flow of red blood cells and thus oxygen transport. The aim of this proof-of-concept study was to evalua...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Lippincott Williams & Wilkins
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10417222/ https://www.ncbi.nlm.nih.gov/pubmed/37071071 http://dx.doi.org/10.1097/SHK.0000000000002132 |
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author | Iten, Manuela Glas, Michael Kindler, Manuel Ostini, Alessandro Nansoz, Sandra Haenggi, Matthias |
author_facet | Iten, Manuela Glas, Michael Kindler, Manuel Ostini, Alessandro Nansoz, Sandra Haenggi, Matthias |
author_sort | Iten, Manuela |
collection | PubMed |
description | During and immediately after cardiac arrest, cerebral oxygen delivery is impaired mainly by microthrombi and cerebral vasoconstriction. This may narrow capillaries so much that it might impede the flow of red blood cells and thus oxygen transport. The aim of this proof-of-concept study was to evaluate the effect of M101, an extracellular hemoglobin-based oxygen carrier (Hemarina SA, Morlaix, France) derived from Arenicola marina, applied during cardiac arrest in a rodent model, on markers of brain inflammation, brain damage, and regional cerebral oxygen saturation. Twenty-seven Wistar rats subjected to 6 min of asystolic cardiac arrest were infused M101 (300 mg/kg) or placebo (NaCl 0.9%) concomitantly with start of cardiopulmonary resuscitation. Brain oxygenation and five biomarkers of inflammation and brain damage (from blood, cerebrospinal fluid, and homogenates from four brain regions) were measured 8 h after return of spontaneous circulation. In these 21 different measurements, M101-treated animals were not significantly different from controls except for phospho-tau only in single cerebellum regions (P = 0.048; ANOVA of all brain regions: P = 0.004). Arterial blood pressure increased significantly only at 4 to 8 min after return of spontaneous circulation (P < 0.001) and acidosis decreased (P = 0.009). While M101 applied during cardiac arrest did not significantly change inflammation or brain oxygenation, the data suggest cerebral damage reduction due to hypoxic brain injury, measured by phospho-tau. Global burden of ischemia appeared reduced because acidosis was less severe. Whether postcardiac arrest infusion of M101 improves brain oxygenation is unknown and needs to be investigated. |
format | Online Article Text |
id | pubmed-10417222 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Lippincott Williams & Wilkins |
record_format | MEDLINE/PubMed |
spelling | pubmed-104172222023-08-12 EFFECTS OF M101—AN EXTRACELLULAR HEMOGLOBIN—APPLIED DURING CARDIOPULMONARY RESUSCITATION: AN EXPERIMENTAL RODENT STUDY Iten, Manuela Glas, Michael Kindler, Manuel Ostini, Alessandro Nansoz, Sandra Haenggi, Matthias Shock Basic Science During and immediately after cardiac arrest, cerebral oxygen delivery is impaired mainly by microthrombi and cerebral vasoconstriction. This may narrow capillaries so much that it might impede the flow of red blood cells and thus oxygen transport. The aim of this proof-of-concept study was to evaluate the effect of M101, an extracellular hemoglobin-based oxygen carrier (Hemarina SA, Morlaix, France) derived from Arenicola marina, applied during cardiac arrest in a rodent model, on markers of brain inflammation, brain damage, and regional cerebral oxygen saturation. Twenty-seven Wistar rats subjected to 6 min of asystolic cardiac arrest were infused M101 (300 mg/kg) or placebo (NaCl 0.9%) concomitantly with start of cardiopulmonary resuscitation. Brain oxygenation and five biomarkers of inflammation and brain damage (from blood, cerebrospinal fluid, and homogenates from four brain regions) were measured 8 h after return of spontaneous circulation. In these 21 different measurements, M101-treated animals were not significantly different from controls except for phospho-tau only in single cerebellum regions (P = 0.048; ANOVA of all brain regions: P = 0.004). Arterial blood pressure increased significantly only at 4 to 8 min after return of spontaneous circulation (P < 0.001) and acidosis decreased (P = 0.009). While M101 applied during cardiac arrest did not significantly change inflammation or brain oxygenation, the data suggest cerebral damage reduction due to hypoxic brain injury, measured by phospho-tau. Global burden of ischemia appeared reduced because acidosis was less severe. Whether postcardiac arrest infusion of M101 improves brain oxygenation is unknown and needs to be investigated. Lippincott Williams & Wilkins 2023-07 2023-04-26 /pmc/articles/PMC10417222/ /pubmed/37071071 http://dx.doi.org/10.1097/SHK.0000000000002132 Text en Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the Shock Society. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) , where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. |
spellingShingle | Basic Science Iten, Manuela Glas, Michael Kindler, Manuel Ostini, Alessandro Nansoz, Sandra Haenggi, Matthias EFFECTS OF M101—AN EXTRACELLULAR HEMOGLOBIN—APPLIED DURING CARDIOPULMONARY RESUSCITATION: AN EXPERIMENTAL RODENT STUDY |
title | EFFECTS OF M101—AN EXTRACELLULAR HEMOGLOBIN—APPLIED DURING CARDIOPULMONARY RESUSCITATION: AN EXPERIMENTAL RODENT STUDY |
title_full | EFFECTS OF M101—AN EXTRACELLULAR HEMOGLOBIN—APPLIED DURING CARDIOPULMONARY RESUSCITATION: AN EXPERIMENTAL RODENT STUDY |
title_fullStr | EFFECTS OF M101—AN EXTRACELLULAR HEMOGLOBIN—APPLIED DURING CARDIOPULMONARY RESUSCITATION: AN EXPERIMENTAL RODENT STUDY |
title_full_unstemmed | EFFECTS OF M101—AN EXTRACELLULAR HEMOGLOBIN—APPLIED DURING CARDIOPULMONARY RESUSCITATION: AN EXPERIMENTAL RODENT STUDY |
title_short | EFFECTS OF M101—AN EXTRACELLULAR HEMOGLOBIN—APPLIED DURING CARDIOPULMONARY RESUSCITATION: AN EXPERIMENTAL RODENT STUDY |
title_sort | effects of m101—an extracellular hemoglobin—applied during cardiopulmonary resuscitation: an experimental rodent study |
topic | Basic Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10417222/ https://www.ncbi.nlm.nih.gov/pubmed/37071071 http://dx.doi.org/10.1097/SHK.0000000000002132 |
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