Journals / Türk Nöroşirürji Dergsi / 2002 / Cilt: 12 - Sayı: 3

The effects of nimodipine and memantine on focal cerebral ischemia-reperfusion model

Fokal serebral iskemi-reperfüzyon modelinde nimodipin ve memantin'in etkileri

Pages
216–221
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Results: The results showed that the use of memantin alone or in combination with nimodipine improves neurological outcome and decreases the size of infarction (p

📌 3 Key Takeaways

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Objective & Hypothesis:Purpose: In experimental cerebral ischemia, the progress of secondary damage after primary insult is considered as the major cause of definitive neurological deficit.
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Key Findings & Data:In this study in the ischemia-reperfusion model in rat hindarance of Ca entry into the cell is aimed by blocking both voltage and agonist operated Ca channels.
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Conclusion & Impact:Results: The results showed that the use of memantin alone or in combination with nimodipine improves neurological outcome and decreases the size of infarction (p
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Purpose: In experimental cerebral ischemia, the progress of secondary damage after primary insult is considered as the major cause of definitive neurological deficit. In the process of secondary damage, the influx of calcium has an important role. In this study in the ischemia-reperfusion model in rat hindarance of Ca entry into the cell is aimed by blocking both voltage and agonist operated Ca channels. Materials and Methods: The effects of memantine, a N-methyl-D-aspartat blocker; and nimodipine, a voltage sensitive calcium canal blocker were examined in 48 female Wistar rats that underwent right middle cerebral artery infarction by endovascular suture technique. Rats were equally divided into three therapy and one control groups. In therapy groups, memantine (10 mg/kg, ip) and nimodipine (0.1 mg/kg, ip) were administered alone or in combination 15 minutes before ischemia. Three hours after ischemia, brains were reperfused. Neurological evaluation was performed at six hours after ischemia, then rats were sacrified. The brains were sectioned coronally, and stained with tripheniltetrazolium chloride. The percentage of areas of infarction were evaluated in brain specimens. Results: The results showed that the use of memantin alone or in combination with nimodipine improves neurological outcome and decreases the size of infarction (p

Özet

Amaç: Deneysel serebral iskemide, primer hasarı izleyen patolojik ikincil süreçler kalıcı nörolojik defisitin ana nedenini oluşturur. Kalsiyumun hücre içine girişi destrüktif olayları başlatan temel faktördür. Çalışmamızda deneysel iskemi-reperfüzyon modelinde kalsiyumun hücre içine girişinin engellenmesi amaçlanmıştır. Bu nedenle N-metil-D-Aspartat blokeri olan memantin ve voltaj sensitif kalsiyum kanal blokeri olan nimodipin'in kombine etkileri araştırılmıştır. Yöntem: Çalışma damar içi sütür tekniği kullanılarak sağ orta serebral arter infarktı ve reperfüzyonu oluşturulan 48 adet Wistar türü dişi sıçan üzerinde yapıldı. Sıçanlar biri kontrol olmak üzere dört gruba ayrıldılar. Tedavi grubunda iskemi öncesi 15. dakikada memantin (10 mg/ kg, periton içi), nimodipin (0.1 mg/kg, periton içi) ayrı ayrı ve beraber olarak uygulandı. İskeminin üçüncü saatinde reperfüzyon sağlandı. Sıçanlar İskeminin altıncı saattindeki nörolojik muayenelerini takiben sakrifiye edildiler. Beyinlerden koronal planda kesitler alındı ve tripheniltetrazolium chloride ile tespit edildi. İskemik alanın yüzde oranı hesaplandı. Bulgular: Memantin'in tek başına ve nimodipin ile birlikte kullanılması nörolojik tabloyu düzeltirken, nimodipin'in tek başına uygulanması etkili olmadı. Memantin'in tek başına ve nimodipin ile birlikte uygulaması tüm kesitlerde, nimodipin'in tek başına uygulaması ise bazı kesitlerde (6, 7, 8, 9 mm) infarkt alanını küçülttü. Sonuç: Memantin grubuna kıyasla, nimodipin'in serebral İskeminin profilaksisinde çok daha zayıf etkili olduğu, yine iki ilacın kombine kullanımının da memantinin tek başınakullanılmasıyla sağlanan profilaktik etkiyi ancak hafif derecede arttırdığı sonucuna varıldı.

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Cite This Article

YANIK, B., ÇOBANOĞLU, S., GÖRGÜLÜ, A., KİRİŞ, T. (2022). The effects of nimodipine and memantine on focal cerebral ischemia-reperfusion model. Türk Nöroşirürji Dergsi, Cilt: 12 - Sayı: 3, 216–221. https://ajindex.com/articles/647965

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References (1)

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