Dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats
Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous ex...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Westermaier, T. [verfasserIn] Zausinger, S. [verfasserIn] Baethmann, A. [verfasserIn] Schmid-Elsaesser, R. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2005 |
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| Übergeordnetes Werk: |
Enthalten in: Acta neurochirurgica - Wien [u.a.] : Springer, 1950, 147(2005), 5 vom: 14. März, Seite 525-532 |
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| Übergeordnetes Werk: |
volume:147 ; year:2005 ; number:5 ; day:14 ; month:03 ; pages:525-532 |
| Links: |
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| DOI / URN: |
10.1007/s00701-005-0496-4 |
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| Katalog-ID: |
SPR007285752 |
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| 245 | 1 | 0 | |a Dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats |
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| 520 | |a Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion. | ||
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10.1007/s00701-005-0496-4 doi (DE-627)SPR007285752 (SPR)s00701-005-0496-4-e DE-627 ger DE-627 rakwb eng 610 ASE 44.65 bkl 44.90 bkl Westermaier, T. verfasserin aut Dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion. Zausinger, S. verfasserin aut Baethmann, A. verfasserin aut Schmid-Elsaesser, R. verfasserin aut Enthalten in Acta neurochirurgica Wien [u.a.] : Springer, 1950 147(2005), 5 vom: 14. März, Seite 525-532 (DE-627)265508398 (DE-600)1464215-3 0942-0940 nnns volume:147 year:2005 number:5 day:14 month:03 pages:525-532 https://dx.doi.org/10.1007/s00701-005-0496-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE 44.90 ASE AR 147 2005 5 14 03 525-532 |
| spelling |
10.1007/s00701-005-0496-4 doi (DE-627)SPR007285752 (SPR)s00701-005-0496-4-e DE-627 ger DE-627 rakwb eng 610 ASE 44.65 bkl 44.90 bkl Westermaier, T. verfasserin aut Dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion. Zausinger, S. verfasserin aut Baethmann, A. verfasserin aut Schmid-Elsaesser, R. verfasserin aut Enthalten in Acta neurochirurgica Wien [u.a.] : Springer, 1950 147(2005), 5 vom: 14. März, Seite 525-532 (DE-627)265508398 (DE-600)1464215-3 0942-0940 nnns volume:147 year:2005 number:5 day:14 month:03 pages:525-532 https://dx.doi.org/10.1007/s00701-005-0496-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE 44.90 ASE AR 147 2005 5 14 03 525-532 |
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10.1007/s00701-005-0496-4 doi (DE-627)SPR007285752 (SPR)s00701-005-0496-4-e DE-627 ger DE-627 rakwb eng 610 ASE 44.65 bkl 44.90 bkl Westermaier, T. verfasserin aut Dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion. Zausinger, S. verfasserin aut Baethmann, A. verfasserin aut Schmid-Elsaesser, R. verfasserin aut Enthalten in Acta neurochirurgica Wien [u.a.] : Springer, 1950 147(2005), 5 vom: 14. März, Seite 525-532 (DE-627)265508398 (DE-600)1464215-3 0942-0940 nnns volume:147 year:2005 number:5 day:14 month:03 pages:525-532 https://dx.doi.org/10.1007/s00701-005-0496-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE 44.90 ASE AR 147 2005 5 14 03 525-532 |
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10.1007/s00701-005-0496-4 doi (DE-627)SPR007285752 (SPR)s00701-005-0496-4-e DE-627 ger DE-627 rakwb eng 610 ASE 44.65 bkl 44.90 bkl Westermaier, T. verfasserin aut Dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion. Zausinger, S. verfasserin aut Baethmann, A. verfasserin aut Schmid-Elsaesser, R. verfasserin aut Enthalten in Acta neurochirurgica Wien [u.a.] : Springer, 1950 147(2005), 5 vom: 14. März, Seite 525-532 (DE-627)265508398 (DE-600)1464215-3 0942-0940 nnns volume:147 year:2005 number:5 day:14 month:03 pages:525-532 https://dx.doi.org/10.1007/s00701-005-0496-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE 44.90 ASE AR 147 2005 5 14 03 525-532 |
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10.1007/s00701-005-0496-4 doi (DE-627)SPR007285752 (SPR)s00701-005-0496-4-e DE-627 ger DE-627 rakwb eng 610 ASE 44.65 bkl 44.90 bkl Westermaier, T. verfasserin aut Dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion. Zausinger, S. verfasserin aut Baethmann, A. verfasserin aut Schmid-Elsaesser, R. verfasserin aut Enthalten in Acta neurochirurgica Wien [u.a.] : Springer, 1950 147(2005), 5 vom: 14. März, Seite 525-532 (DE-627)265508398 (DE-600)1464215-3 0942-0940 nnns volume:147 year:2005 number:5 day:14 month:03 pages:525-532 https://dx.doi.org/10.1007/s00701-005-0496-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE 44.90 ASE AR 147 2005 5 14 03 525-532 |
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During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion.</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Zausinger, S.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Baethmann, A.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Schmid-Elsaesser, R.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Acta neurochirurgica</subfield><subfield code="d">Wien [u.a.] : Springer, 1950</subfield><subfield code="g">147(2005), 5 vom: 14. 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dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats |
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Dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats |
| abstract |
Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion. |
| abstractGer |
Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion. |
| abstract_unstemmed |
Summary Background. During many neurovascular procedures temporary occlusion of cerebral arteries is inevitable. Neuroprotective drugs may reduce the risk of cerebral infarction in this situation. Increasing evidence indicates neuroprotective properties of magnesium in cerebral ischemia. Previous experimental studies on the neuroprotective efficacy of magnesium-treatment in transient focal ischemia provide widely differing results using different magnesium doses and treatment-regimens. The present study was conducted to find the maximum protective dose of intravenous magnesium sulphate in a rat model of transient focal ischemia. Methods. 45 male Sprague-Dawley rats were subjected to 90 minutes of middle cerebral artery occlusion (MCAO) by an intraluminal thread. Animals were randomly assigned to one of 4 treatment arms: (1) vehicle (2) $ MgSO_{4} $ 1×0.75 mmol/kg (3) $ MgSO_{4} $ 2×1 mmol/kg (4) $ MgSO_{4} $ 1 mmol/kg+0.5 mmol/kg/h. Local cortical blood flow (LCBF) was continuously measured by laser-Doppler flowmetry. Functional deficits were quantified daily, infarct volumes were assessed histologically after 7 days. Results. Magnesium serum levels below 3 mmol/l were well tolerated by the animals. Above 3 mmol/l cardiodepressive effects limited neuroprotection. Total infarct volumes in groups 3 and 4 were significantly reduced by 32% and 42%, respectively, compared to controls. Postoperative neurological recovery was significantly improved in magnesium-treated groups. Conclusion. Continuous magnesium-administration with stable serum concentrations between 2 and 3 mmol/l offered the best protection and was well tolerated. Serum concentrations above 3 mmol/l should not be exceeded. An elevation of magnesium serum levels could be useful for brain tissue protection during procedures which are prone to the risk of temporary vessel occlusion. |
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| title_short |
Dose finding study of intravenous magnesium sulphate in transient focal cerebral ischemia in rats |
| url |
https://dx.doi.org/10.1007/s00701-005-0496-4 |
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| author2 |
Zausinger, S. Baethmann, A. Schmid-Elsaesser, R. |
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Zausinger, S. Baethmann, A. Schmid-Elsaesser, R. |
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| doi_str |
10.1007/s00701-005-0496-4 |
| up_date |
2024-07-04T02:41:19.060Z |
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| score |
7.3981104 |