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Yıl:2014; Cilt: 15; Sayı: 1>> Özet
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Bağımlılık Dergisi; 2014;15(1):28-33
Alkol Bağımlılığında Ayıklık Döneminde Beyinde Yapısal ve Fonksiyonel Düzelmeler
S Burhanoğlu, GH Sayar
Üsküdar Üniversitesi
Amaç: Alkolizm beyinde serebral hacim kaybının ve nöropsikolojik bozulmaların eşlik ettiği beyaz ve gri madde hasarına yol açar. Ancak alkol kesilmesi ve ayıklık (sobriety) döneminin ilk günlerinden itibaren serebral hacim kaybı, metabolik ve nöropsikolojik bozukluklar kısmen de olsa geri dönüşümlüdür. Yöntem: Bu gözden geçirme yazısında alkol bağımlılığında ayıklık döneminde beyinde izlenen yapısal ve fonksiyonel düzelmeler ele alınmış ve konuyla ilgili çalışmalar özetlenmiştir. Bulgular: Nörogenezde artış, kolin düzeyinde yükselme, gri ve beyaz cevherde büyüme, beyin devrelerinde reorganizasyon, yeni nöronların oluşumu ve ventriküllerde küçülmenin yanı sıra nörogenezin artmasına paralel olarak yürütücü işlevlerde, bellek ve dikkatte düzelme, davranışsal kontrol ve duygudurumda iyileşme de izlenir. Araştırmalar ayıklık döneminde düzenli fiziksel egzersiz programı uygulanması ile nörogenezin hızlanabileceğini düşündürmektedir. Sosyal içicilik ya da yasal sınırlar içindeki düşük miktarlarda alkol kullanımının da nörogenez üzerine olumsuz etkiler gösterdiğini bildiren çalışmalar, alkol bağımlılığı sonrasında beyin işlevleri zarar görmüş kişilerin ayıklık döneminde alkolden tamamen uzak durmalarının önemini göstermektedir. Sonuç: Ayıklık döneminde izlenen nöronal düzelmenin mekanizmalarının anlaşılması ile beyin rejenerasyonuna ait bir model geliştirilebilecek ve gelecekte diğer nörodejeneratif hastalıkların tedavisinde yol gösterici olabilecektir.
Morpholocial and Functional Recovery of Brain Associated with Sobriety from Alcoholism
Objective: Alcoholism results in grey and white matter brain injury, which is accompanied by cerebral volume loss and neuropsychological impairments. Cerebral volume loss, metabolic and neuropsychological impairments associated with alcohol addiction may be in part reversible, even during early stages of sobriety. Method: In this review we discuss the morphological and functional recovery of brain in sobriety after alcohol addiction. The studies about this subject are overviewed.Results: Sobriety after alcohol addiction results in brain cell genesis, increased cholin levels, increased volume of gray and white matter, reorganisation of brain circuits and decrease in ventricular volume that could contribute to the return of executive functions, better memory, attention, behavioral control and mood. Previous studies suggested that regular physical exercise in sobriety period may lead to increase in rate of neurogenesis. Alcohol consumption in moderate amounts in legal limits or as social drinking also reported to have profound negative effects on neurogenesis. This result illustrates the importance of sobriety for the patients with damaged brain functions. Conclusion: Further understanding the mechanisms of neuronal recovery in sobriety may serve as a valuable model of brain regeneration and, would become relevant for treatment of other neurodegenerative disorders.

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