Effect of losartan on produce of sera autoantibodies to angiotensin II-1 receptor in renovascular hypertension rats / 中国应用生理学杂志

ABSTRACT

<p><b>AIM AND METHODS</b>The effects of losartan (after operation 2 week to 10 week, 5 mg/kg d ig) on generation of AT1R-AA in sera were observed during development of hypertension in rats. The renovascular hypertension (RVH) model was established by two-kidney one-clip method, a synthetic peptide corresponding to amino acid sequence 165-191 of the second extracellular loop of the angiotensin II-1 receptor (AT1R) was used as antigen, SA-ELISA were used to examine sera AT1R autoantibody (AT1R-AA).</p><p><b>RESULTS</b>The frequencies and titres of AT1R-AA after operation one week rats were significantly increased (P < 0.05). The treatment with losartan not only inhibited structural and functional changes, but also the frequencies and titres of AT1R-AA was significantly lower (P < 0.05) than RVH group.</p><p><b>CONCLUSION</b>It is suggested that the losartan significantly inhibits generation of the AT1R-AA.</p>