Hakan PARLAKPINAR, Mehmet Hamdi ÖRÜM, Ahmet ACET

Aminoguanidin ve Kardiyovasküler Sistem

Aminoguanidin AG , yüzyıldan uzun bir süredir bilinen, yapısal olarak L-Arjinin aminoasitine benzeyen, indüklenebilir nitrik oksit sentaz iNOS ’u selektif olarak inhibe eden, bu şekilde azalmış nitrik oksit NO oluşumuna neden olan bir bileşiktir. AG’nin önemli biyolojik etkileri geçtiğimiz yıllarda keşfedilmiştir. Keşfedilen ilk biyolojik etkisi, histamin, putreskin gibi aktif diaminlerin oksidatif deaminasyonunu katalizleyen, diamin oksidaz’ın inhibisyonudur. AG, etkili bir antioksidan ve serbest radikal süpürücüdür. AG hücre ve dokularda lipid peroksidasyonunun oluşumunu önler. Pek çok araştırmacı bu özellikleri üzerinden, AG’nin kardiyovasküler sistemdeki rolünü açıklamaya çalışmıştır. NO vasküler tonusun düzenlenmesi, endotel bütünlüğünün ve permeabilitesinin düzenlenmesi ve miyokard kontraktilitesinin düzenlenmesinde önemli bir rol oynar. Bu derlemede AG’nin kardiyovasküler sistem üzerindeki etkilerinin gözden geçirilmesi amaçlandı

Anahtar Kelimeler:

Aminoguanidin, Nitrik oksit, Kardiyovasküler sistem

Aminoguanidine and Cardiovascular System

Aminoguanidine AG is a compound which has been known for over a century, structurally similar to L-arginine amino acid, a selective inhibitor of inducible nitric oxide synthase iNOS and in this way leads to reduced nitric oxide NO . Its important biological effects were discovered in recent years. The first discovered effect is the inhibition of diamine oxidase which catalyzes the oxidative deamination of biologically active deamines such as histamine and putrescine. AG is an effective antioxidant and free radical scavenger. AG prevents the formation of lipid peroxidation in cells and tissues. By using these characteristics, many investigators tried to explain the role of AG on the cardiovascular system. NO plays a major role in the regulation of vascular tone, endothelial integrity and permeability regulation and myocardial contractility. In this review, we aimed to summarize the effects of AG on the cardiovascular system

Keywords:

Aminoguanidine, Nitric oxide, Cardiovascular system,

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