BİTKİSEL FLAVONOİD BİLEŞİKLERİNİN BİYOAKTİVİTELERİ VE MUHTEMEL ETKİ MEKANİZMALARI - BIOACTIVITIES OF PLANT FLAVONOIDS AND THE POSSIBLE ACTION MECHANISMS

Year 2012, Volume: 75 Issue: 3, 46 - 49, 03.01.2013

Hüsniye Birman

Abstract

Flavonoidler çoğu bitkilerde bulunan düşük moleküler ağırlıklı polifenolik bileşiklerdir. Özellikle bitkilerdeki yeşil, turuncu, kırmızı pigmentlerden sorumlu yapılar olarak tanımlanırlar. İn vivo, in vitro ve epidemiyolojik çalışmalarla tespit edilmiş birçok biyoaktiviteleri bildirilmektedir. Kardiyovasküler sistem üzerine olan aktiviteleri en çok üzerinde durulan etkileridir. Bunun yanında  serbest radikal uzaklaştırıcı (antioksidan) anti-trombotik, antihipertansif ,antiallerjik, antiinflamatuar, antiapoptotik ve son zamanlarda da antikanserojen aktiviteleri üzerinde çalışmalar devam etmektedir. Ayrıca flavonoidler çeşitli mekanizmalarla vasodilatator etkilidirler ve bu aktiviteleri endotelyuma bağımlı veya endotelyumdan bağımsız bir tarzdadır. Özellikleiskemi - reperfüzyon hasarında farklı birçok mekanizma ile flavonoidlerin koruyucu aktiviteleri ileri sürülmektedir.Bu derlemede flavonoidlerin kardiyoprotektif aktivitelerindeki  muhtemel etki mekanizmalarını ele alındı.

Anahtar Kelimeler: Flavonoid bileşikleri; antioksidan; iskemi- reperfüzyon; biyoaktivite

Keywords

Flavonoid bileşikleri, antioksidan, iskemi- reperfüzyon, biyoaktivite

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