The aim of this study was synthesizing two 7,8-dioxabicyclo[4.1.1]octan-3-yl)-steroid derivatives (compounds 3 or 4) to evaluate their inotropic activity in vitro. The first stage was achieved by the preparation of two 7,8-dioxabicyclo[4.1.1]octan-3-yl)-steroid derivatives using some chemical strategies. Then, the inotropic activity of both steroid derivatives against left ventricular pressure (LVP) was evaluated in an isolated rat heart model using Bay-k-8644, nifedipine, aucubin, and L-NAME as controls. The results showed that compound 3 increased LVP in a dose-dependent manner and this effect was inhibited by nifedipine. Other results showed that compound 4 decreased LVP in a dose-dependent manner and this effect was blocked in the presence of L-NAME. All these data indicate that 1) the positive inotropic activity exerted by compound 3 was through type L calcium channel activation; 2) the negative inotropic effect of 4 was via nitric oxide synthase activation. These phenomena could be due to the different functional groups involved in the chemical structure of compounds 3 and 4.
University Autonomous of Campeche
Birincil Dil | İngilizce |
---|---|
Konular | Mühendislik |
Bölüm | Articles |
Yazarlar | |
Yayımlanma Tarihi | 17 Nisan 2020 |
Kabul Tarihi | 16 Nisan 2020 |
Yayımlandığı Sayı | Yıl 2020 Cilt: 48 Sayı: 1 |
HACETTEPE JOURNAL OF BIOLOGY AND CHEMİSTRY
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