Dergi Ara >>
Yıl:2008; Cilt: 2; Sayı: 3-4>> Özet
TAM METİN
Psikiyatride Derlemeler, Olgular ve Varsayımlar (RCHP); 2008;2(3-4):27-36
Sinir Sisteminin Fonksiyonlarını Modüle Edebilen Yeni Bir Madde: Agmatin
F Arıcıoğlu
Marmara Üniversitesi, Eczacılık Fakültesi, Farmakoloji Anabilim Dalı ve Psikofarmakoloji Araştırma Birimi
Agmatin L-arjininden arjinin dekarboksilaz aracılığıyla dekarboksilasyonla oluşan ve agmatinazla hidrolize uğrayan
bir amindir. Arjinin dekarboksilaz ve agmatinaz enzimleri memeli beyninde sentezlenir. Agmatin beyin de dahil
olmak üzere vücutta yaygın dağılım gösterir. Beyinde agmatinin konsantrasyonu bazı klasik nörotransmitterler
kadardır. Agmatin alfa-adrenerjik ve imidazolin reseptörlerine bağlanır, nikotinik kolinerjik, serotonerjik 5-HT3 ve
glutamaterjik NMDA reseptörlerini bloke eder ve nitrik oksit sentazı bloke eder. Endojen bir madde olan agmatin
sinir sisteminde bir çok fonksiyonu modüle edebilir.
A new substance modulating the functions of nervous system ?Agmatin?
Agmatine is an amine formed by decarboxylation of L-arginine by arginine decarboxylase and hydrolysed by
agmatinase. Arginine decarboxylase and agmatinase are expressed in mammalian brain. Agmatine widely
distributed in the body including brain. In the brain, the concentration of agmatine is similar to that of some
classical neurotransmitters. Agmatine binds to alpha-adrenergic and imidazoline receptors, blocks nicotinic
cholinergic, serotoninergic 5-HT3 and glutamatergic NMDA receptors and inhibits nitric oxide synthase.
Agmatine is an endogenous substance, can modulate several functions in nervous system

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