Journals / Türk Anestezi ve Reanimasyon Dergisi / 2005 / Cilt: 33 - Sayı: 6

The effect of magnesium on increased blood-brain barrier permaebility and brain edema after experimentally induced subarachnoid hemorrhage

Magnezyumun deneysel subaraknoid kanama sonrası artmış kan-beyin bariyeri geçirgenliği ve beyin ödemi gelişimi üzerine etkisi

Pages
443–450
Publication Date
2022-11-05
DOI
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In the magnesium treated subarachnoid hemorrhage animals specific gravity values were higher compared to the untreated animals indicating less edema formation with the administration of magnesium.Conclusion: Magnesium administration attenuated the increased blood brain barrier permeability defect and caused a reduction in the brain edema formation in our rabbit model of subarachnoid hemorrhage.

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Objective & Hypothesis:Aim: The aim of this study is to determine the blood-brain barrier permeability and brain edema formation after subarachnoid hemorrhage and, show the effect of magnesium administration on blood-brain barrier permeability defect and brain edema formation.Materials and Methods: The experiment was performed on 40 male New Zealand white rabbits.
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Key Findings & Data:To examine the effect of magnesium in subarachnoid hemorrhage and control operated group rabbits a dose of 750 µmol kg-1 was given intravenously after surgery.
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Conclusion & Impact:In the magnesium treated subarachnoid hemorrhage animals specific gravity values were higher compared to the untreated animals indicating less edema formation with the administration of magnesium.Conclusion: Magnesium administration attenuated the increased blood brain barrier permeability defect and caused a reduction in the brain edema formation in our rabbit model of subarachnoid hemorrhage.
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📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Aim: The aim of this study is to determine the blood-brain barrier permeability and brain edema formation after subarachnoid hemorrhage and, show the effect of magnesium administration on blood-brain barrier permeability defect and brain edema formation.Materials and Methods: The experiment was performed on 40 male New Zealand white rabbits. Subarachnoid hemorrhage was induced using autolog blood injection into cistern of magna percutaneously. To examine the effect of magnesium in subarachnoid hemorrhage and control operated group rabbits a dose of 750 µmol kg-1 was given intravenously after surgery. Control groups both subarachnoid hemorrhage and control operated group rabbits were injected with equal volume of saline. After 24 hours rabbits were anesthetized and decapitated for the investigation of specific gravity and blood-brain barrier integrity by the spectrophotometric assay of Evans blue dye extravasation.Results: Subarachnoid hemorrhage significantly increased blood-brain barrier permeability to Evans blue. The dye content of each brain region was significantly lower in the magnesium treated subarachnoid hemorrhage rabbits compared to the controls. In the magnesium treated subarachnoid hemorrhage animals specific gravity values were higher compared to the untreated animals indicating less edema formation with the administration of magnesium.Conclusion: Magnesium administration attenuated the increased blood brain barrier permeability defect and caused a reduction in the brain edema formation in our rabbit model of subarachnoid hemorrhage.

Özet

Amaç: Bu çalışmanın amacı, subaraknoid kanama sonrası ortaya çıkan kan-beyin bariyeri geçirgenlik artışı ve beyin ödemi gelişiminin belirlenmesi ve magnezyumun kan-beyin bariyeri geçirgenlik artışı ve beyin ödemi gelişimi üzerine etkisinin gösterilmesidir.Gereç ve Yöntem: Çalışma, 40 adet New-Zealand tavşanda yapıldı. Subaraknoid kanama, sisterna magna'ya perkütan otolog kan enjeksiyonu ile oluşturuldu. Subaraknoid kanama ve "kontrol" gurubu tavşanlarda magnezyumun etkisi, intravenöz 750 µmol kg-1 doz uygulaması ile araştırıldı. Kontrol subaraknoid kanama ve kontrol "kontrol" gurubu tavşanlara eşit volümde serum fizyolojik verildi. 24 saat sonra tavşanlar genel anestezi altında, beyin dokusu özgül ağırlığının belirlenmesi ve kan-beyin bariyeri bütünlüğünün Evans mavisi boyasının ektravazasyonun spektrofotometrik olarak ölçümü ile saptanması için dekapitize edildiler.Bulgular: Subaraknoid kanama Evans mavisinin kan-beyin bariyeri geçirgenliğini belirgin oranda arttırmıştır. Beyin dokusu Evans mavisi boya miktarı magnezyum ile tedavi edilen subaraknoid kanama grubunda tüm beyin bölgelerinde kontrol grubu ile karşılaştırıldığında anlamlı derecede azalmıştır. Magnezyum uygulamasının beyin ödemi oluşumunu azalttığının göstergesi olarak magnezyumla tedavi edilen subaraknoid kanamalı tavşanların beyin dokusu özgül ağırlık değerleri tedavi edilmeyenlere göre anlamlı oranda yüksek bulunmuştur.Sonuç: Tavşanlarda oluşturulan subaraknoid kanama modelinde magnezyum uygulaması, kan-beyin bariyeri geçirgenlik artışı ve beyin ödemi oluşumunu sınırlandırmıştır.

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Cite This Article

TELCİ, L., ESEN, F., ERDEM, T., DEMİR, E. Z., AKTAN, D. (2022). The effect of magnesium on increased blood-brain barrier permaebility and brain edema after experimentally induced subarachnoid hemorrhage. Türk Anestezi ve Reanimasyon Dergisi, Cilt: 33 - Sayı: 6, 443–450. https://ajindex.com/articles/620131

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