Effect of sufentanil on contraction and anti peroxidative ability of thoracic aorta isolated from rats with diabetes mellitus

Abstract

Objective To investigate the effect of sufentanil on contraction and anti peroxidative ability of thoracic aorta isolated from rats with diabetes mellitus.Methods Eight male rats with diabetes were decapitated and their thoracic aorta were i solated.The aortic rings obtained from diabetes rat were divided into 4 groups(n=8):control group and 3 sufentanil groups (7×10-11,2×10-10,1×10-9 mol/L).Vitro vascular experimental method was used to observe the effect of different concentrations of sufentanil on the norepinephrine(NE)-induced contraction of thoracic aorta from diabetic rats and the content of nitrogen monoxide(NO),maleic dialdehyde(MDA) and superoxide dismutase(SOD) on the vascular ring.Results The contraction amplitude of 3 sufentanil groups was orderly (25.4±4.0)％,(21.3±3.5)％ and (17.4±2.4)％.The SOD activity of 3 sufentanil groups was orderly (3.8±1.2),(4.9±0.8) U/mgprot and (6.1±0.3) U/mgprot.The contraction amplitude of thoracic aorta from 3 sufentanil groups was significantly lesser than that from control group,the level of SOD activity was higher in 3 sufentanil groups than in control group.Sufentanil significantly inhibited the NE-induced aortic contraction and changed the SOD activity in proportion to concentration.Conclusions Sufentanil can inhibit NE-induced contraction and change the anti peroxidative ability of thoracic aorta isolated from rats with diabetes mellitus in a concentration-dependent manner. Key words: Sufentanil; Diabetes mellitus; Nitrogen monoxide; Maleic dialdehyde; Superoxide dismutase