Journals / Turkish Neurosurgery / 2014 / Cilt: 24 - Sayı: 2

Nifedipinin Penisilin ile Deneysel Epilepsi Oluşturulan Sıçanlarda Hipokampal Nöron Kaybına Etkisi

Effect of nifedipine on Hippocampal neuron number in Penicillin-Induced Epileptic Rats

Pages
234–240
DOI
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Nifedipine could not protect against hippocampal neuronal loss in penicillin-induced epileptic rats.

📌 3 Key Takeaways

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Objective & Hypothesis:AIM: Epileptic seizures lead to neuronal loss in the hippocampus.
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Key Findings & Data:In spite of several studies that show the seizure-suppressing effects of nifedipine, it has been shown that nifedipine does not suppress but conversely increases epileptic seizures.
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Conclusion & Impact:Nifedipine could not protect against hippocampal neuronal loss in penicillin-induced epileptic rats.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

AIM: Epileptic seizures lead to neuronal loss in the hippocampus. Experimental epilepsy can be induced by direct application of various chemicals to cerebral cortex. Nifedipine is an L-type voltage-dependent calcium channel blocker. In spite of several studies that show the seizure-suppressing effects of nifedipine, it has been shown that nifedipine does not suppress but conversely increases epileptic seizures. Similarly, contradictory effects of nifedipine have been reported, such as neuroprotection, failed neuroprotection and neurotoxicity. We therefore aimed to investigate the effect of nifedipine on hippocampal neuronal loss in penicillin induced epileptic rats in this study. MATERIAL and METHODS: The effect of nifedipine on total hippocampal neuron number was estimated by using the optical fractionator method (an unbiased stereological method) in penicillin-G induced epileptic rats. RESULTS: The total number of hippocampal neurons in the control group was 183687 ± 3184. In the penicillin-induced group, the total neuron number significantly decreased to 146318 ± 3042 compared to the control group. In the nifedipine group, the neuron number significantly decreased to 128873 ± 1157 compared to both control and penicillin-induced groups. CONCLUSION: Nifedipine increased neuronal loss and did not suppress epileptic seizures in penicillin-induced epileptic rats. Nifedipine could not protect against hippocampal neuronal loss in penicillin-induced epileptic rats.

Özet

AMAÇ: Epileptik nöbetler hipokampusta nöron kaybına yol açmaktadır. Çeşitli kimyasalların beyin korteksine direkt olarak uygulanmasıyla deneysel epilepsi oluşturulabilir. Nifedipin, L-tipi voltaj bağımlı kalsiyum kanal blokörüdür. Nifedipinin nöbet baskılayıcı etkilerini gösteren çeşitli çalışmalar bulunduğu gibi, epileptik nöbetleri baskılamadığı tam tersine arttırdığı da gösterilmiştir. Benzer şekilde, nifedipinin çelişkili etkileri bildirilmiştir; olumlu - olumsuz nöroprotektif (nöron koruyucu) ve nörotoksisite gibi. Bu nedenle, bu çalışmada, penisilin ile deneysel epilepsi oluşturulan sıçanlarda nifedipinin hipokampal nöron kaybı üzerine etkisini araştırmayı amaçladık. YÖNTEM ve GEREÇLER: Nifedipinin penisilin G ile deneysel epilepsi oluşturulan sıçanlarda toplam hipokampal nöron sayısına etkisi tarafsız (objektif) bir stereolojik metot olan optik parçalama yöntemi ile değerlendirildi. BULGULAR: Kontrol grubunun toplam hipokampal nöron sayısı 183687 ± 3184 idi. Penisilin grubunun toplam nöron sayısı kontrol grubuna göre anlamlı olarak düşüktü (146318 ± 3042). Penisilin+nifedipin grubunun toplam nöron sayısı (128873 ± 1157) hem kontrol hem de penisilin grubuna göre istatistiksel olarak anlamlı olarak azalmış bulundu. SONUÇ: Nifedipinin epileptik sıçanlarda nöron kaybını arttırdığı ve epileptik nöbetleri baskılamadığı ortaya kondu. Nifedipin, penisilin ile deneysel epilepsi oluşturulan sıçanlarda ortaya çıkan nöron kaybına karşı koruyucu bir etki göstermedi.

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Cite This Article

YILMAZ, İ., AKDOĞAN, I., KAYA, E., YONGUÇ, G. N. (2014). Nifedipinin Penisilin ile Deneysel Epilepsi Oluşturulan Sıçanlarda Hipokampal Nöron Kaybına Etkisi. Turkish Neurosurgery, Cilt: 24 - Sayı: 2, 234–240. https://ajindex.com/articles/404843

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References (1)

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