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Yıl:2023; Cilt: 60; Sayı: 3>> Özet
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Nöropsikiyatri Arşivi; 2023;60(3):271-282
Propranolol’ün Çeşitli Öğrenme Görevlerinin Bütünleştirme ve Yeniden-Bütünleştirme Süreçlerinde Bellek Bozucu Etkisi
ÇF İlhan , S Kışlal
Orta Doğu Teknik Üniversitesi, Ankara
Yakın zamana kadar; öğrenilmiş bilginin, uzun süreli belleğe aktarıldıktan sonra değişmez sabit bir şekilde kaldığı kabul edilmekteydi. Ancak bu konuda yapılan son çalışmalar, bütünleştirme ve yeniden-bütünleştirme süreçlerinde uygulanan beta-adrenerjik reseptör antagonizmi sayesinde ilgili belleğe yeni bilgilerin eklenmesinin ve çıkarılmasının mümkün olduğunu göstermiştir. Merkezi sinir siteminde, protein sentezini inhibe edici özellikleri olan beta-adrenerjik reseptör antagonisti propranolol, bellek bütünleştirme ve yeniden-bütünleştirme süreçlerini engellemek için ek sık kullanılan ajanlardan biridir. Bu derleme çalışmasında; sistemik ve intraserebral olarak uygulanan propranolol’ün, kemirgenlerde çeşitli öğrenme görevlerinde bellek oluşum süreçleri üzerindeki bozucu etkisine dair literatürdeki mevcut çalışmaların araştırılarak değerlendirilmesi amaçlanmıştır. İnsanlarda kullanımı güvenli olan bu ilacın, bellek oluşum sürecini bozmadaki etkinliğinin kanıtlanması durumunda, temelinde öğrenme ve uyumsuz bellekten kaynaklı fobilerin, travma sonrası stres bozukluğunun (TSSB), uyuşturucu madde bağımlılığının veya başka tür bağımlılıklar gibi psikolojik nedenli rahatsızlıkların tedavisinde propranolol uygulamasının yaygın olarak kullanılabilecek etkili bir tedavi yöntemi olacağını öngörmekteyiz
Memory Impairing Effect of Propranolol on Consolidation and Reconsolidation forVarious Learning Tasks
Newly acquired memory traces have been thought to become stable and resistant to interruption after they are stored in long-term memory. However, according to a recent research drugs such as betaadrenergic receptor antagonists enable memories to be updated and rewritten when administered during consolidation and reconsolidation. Propranolol is a widely used beta-adrenergic receptor antagonist that disrupts the consolidation and reconsolidation processes of memory formation as it inhibits protein synthesis in the central nervous system. This review aims to discuss the memory impairing effect of the systemic and intracerebral administration of propranolol during the consolidation and reconsolidation processes associated with different learning tasks. In doing so, this review will help elucidate the effects of propranolol on different stages of memory formation. Since learning and maladaptive memories underpin some of the most common psychological disorders, such as phobias, post-traumatic stress disorder, addiction, drugseeking behavior, and so on, a thorough understanding of propranolol’s memory-impairing effect has significant clinical value and the potential to help people suffering from these disorders.

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