Dergi Ara >>
Yıl:2002; Cilt: 2; Sayı: 3>> Özet
Demans Dergisi; 2002;2(3):84-87
Alzheimer Tedavisinde Muskarinik ve Nikotinik Reseptörleri Etkileyen İlaçların Yeri
E Dileköz, S Ercan
Gazi Üniversitesi Tıp Fakültesi Farmakoloji ABD, Ankara
Alzheimer hastalığında amin yapısındaki santral
sinir sistemi mediyatörlerinden asetilkolin,
noradrenalin, dopamin ve serotonin düzeylerinin
anlamlı olarak azaldığı bilinmektedir.
Demansdan sorumlu tutulan Alzheimer hastalığında
tahrip olan nöronal yollardan en
önemlilerinden biri kolinerjik yollardır. Amiloid
plakların çevresinde asetilkolinesteraz aktivitesi
artarken kolinerjik ve nonkolinerjik nöronlarda
asetilkolinesteraz aktivitesinin azaldığı gösterilmiştir.
Kolinerjik defisit olması nedeniyle,
Alzheimer hastalığının tedavisinde, kolinesteraz
enzim inhibitörleri önemli bir yer işgal etmektedir
. Ancak, demans tedavisinde
asetilkolin prekürsörleri kolin ve lesitin kullanımının
yeri olup olmadığı incelenmiş ve plazma kolin
değeri anlamlı olarak yükseldiğinde çok nadir hastada
düşük bir terapötik etki elde edilebilmiştir.
Bunu takiben muskarinik reseptör agonistlerinin
tedavideki etkinlikleri incelenmeye başlanmıştır.

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