Journals / Turkish Neurosurgery / 2015 / Cilt: 25 - Sayı: 1

Deneysel Soğuk Yaralanma Modeli ile Oluşturulan Vazojenik Beyin Ödeminde Ortaya Çıkan Patofizyolojik Değişiklikler Üzerine Amifostinin Etkisi

The Effect of Amifostine on Pathophysiological Changes in Vasogenic Brain Edema Induced by an Experimental Cold Injury Model

Pages
43–52
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Further experimental and clinical studies are warranted to better delineate the neuroprotective effects of amifostine.

📌 3 Key Takeaways

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Objective & Hypothesis:AIM: To investigate the effects of amifostine, a cytoprotective agent, on pathophysiological changes in vasogenic brain edema induced by an experimental cold injury model and to compare these changes with dexamethasone.
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Key Findings & Data:MATERIAL and METHODS: A total of 138 rats divided into 6 groups.
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Conclusion & Impact:Further experimental and clinical studies are warranted to better delineate the neuroprotective effects of amifostine.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

AIM: To investigate the effects of amifostine, a cytoprotective agent, on pathophysiological changes in vasogenic brain edema induced by an experimental cold injury model and to compare these changes with dexamethasone. MATERIAL and METHODS: A total of 138 rats divided into 6 groups. Brain water content (BWC), malondialdehyde (MDA) concentration and myeloperoxidase (MPO) activity in brain tissue were calculated to evaluate the pathophysiological changes following experimental cold injury. In addition, effects of cold injury on cell structure were assessed with direct light and transmission electron microscopy (TEM). RESULTS: Extent of edema, MDA and MPO levels were significantly higher in cold injury groups than in controls. Although a decrease was noted in these parameters in both the amifostine and dexamethasone groups, the differences were significant only for MDA concentration in dexamethasone group, and for MPO activity in both groups. In addition, there was a significant difference between the group in which amifostine was administered prior to cold injury and dexamethasone group for MPO activity. Histopathologically, positive effects were observed in treatment groups. CONCLUSION: Despite several positive effects of amifostine, its superiority to dexamethasone could not be clearly demonstrated. Further experimental and clinical studies are warranted to better delineate the neuroprotective effects of amifostine.

Özet

AMAÇ: Deneysel soğuk yaralanma modeli ile oluşturulan vazojenik beyin ödeminde ortaya çıkan fizyopatolojik değişiklikler üzerine sitoprotektif bir ajan olan amifostinin etkinliğinin araştırılması ve bu etkilerin deksametazonla karşılaştırılması amaçlandı. YÖNTEM ve GEREÇLER: Çalışmada 6 grupta toplam 138 rat kullanıldı. Soğuk yaralanma modeli sonrası oluşan fizyopatolojik değişikliklerin değerlendirilmesinde; beyin su içeriği (BSİ), beyin dokusunda malondialdehit (MDA) düzeyleri ve miyeloperoksidaz (MPO) aktivitesine bakıldı. Ayrıca direkt ışık ve transmisyon elektron mikroskopi (TEM) ile soğuk hasar uygulanan dokularda hücre yapısı incelendi. BULGULAR: Soğuk hasar uygulanan grupta ödem genişliği, MDA düzeyi ve MPO aktivitesi kontrol gruplarına göre anlamlı oranda yüksek bulundu. Amifostin ve deksametazon verilen gruplarda, bu parametrelerde azalma saptanmakla birlikte sadece deksametazonla MDA daki azalma ile her iki gruptaki MPO aktivitesindeki azalma istatistiksel olarak anlamlı bulundu. Ayrıca, MPO aktivitesi yönünden soğuk hasar öncesi amifostin uygulanan grupla, deksametazon grubu arasındaki fark anlamlı idi. Histopatolojik olarak tedavi gruplarında olumlu etkiler saptandı. SONUÇ: Amifostinle bir takım olumlu etkiler gözlenmekle birlikte, deksametazona bariz üstünlüğü gösterilememiştir. Amifostinin nöroprotektif etkilerinin başka deneysel ve klinik çalışmalarla desteklenmesi gerekmektedir.

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Cite This Article

CENGIZ, K., GÖKSU, E., CENGIZ, A., ÖZSOY, Ö., TAN, R., DEMİR, N., GÜRER, İ., KAZAN, M. S. (2015). Deneysel Soğuk Yaralanma Modeli ile Oluşturulan Vazojenik Beyin Ödeminde Ortaya Çıkan Patofizyolojik Değişiklikler Üzerine Amifostinin Etkisi. Turkish Neurosurgery, Cilt: 25 - Sayı: 1, 43–52. https://ajindex.com/articles/417827

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