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Research in Pharmaceutical Sciences، جلد ۱۸، شماره ۵، صفحات ۴۸۹-۵۰۴
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عنوان انگلیسی The role of Mas receptor on renal hemodynamic responses to angiotensin II administration in chronic renal sympathectomized male and female rats
چکیده انگلیسی مقاله Background and purpose : Renal hemodynamics is influenced by renal sympathetic nerves and the renin-angiotensin system. On the other hand, renal sympathetic denervation impacts kidney weight by affecting renal hemodynamics. The current study evaluated the role of the Mas receptor on renal hemodynamic responses under basal conditions and in response to angiotensin II (Ang II) in chronic renal sympathectomy in female and male rats. Experimental approach: Forty-eight nephrectomized female and male rats were anesthetized and cannulated. Afterward, the effect of chronic renal sympathectomy was investigated on hemodynamic parameters such as renal vascular resistance (RVR), mean arterial pressure (MAP), and renal blood flow (RBF). In addition, the effect of chronic sympathectomy on kidney weight was examined. Findings/Results: Chronic renal sympathectomy increased RVR and subsequently decreased RBF in both sexes. Renal perfusion pressure also increased after sympathectomy in male and female rats, while MAP did not change, significantly. In response to the Ang II injection, renal sympathectomy caused a greater decrease in RBF in all experimental groups, while it did not affect the MAP response. In addition, chronic sympathectomy increased left kidney weight in right nephrectomized rats. Conclusion and implications : Chronic renal sympathectomy changed systemic/renal hemodynamics in baseline conditions and only renal hemodynamics in response to Ang II administration. Moreover, chronic sympathectomy increased compensatory hypertrophy in nephrectomized rats. These changes are unaffected by gender difference and Mas receptor blocker.
کلیدواژه‌های انگلیسی مقاله Angiotensin II,A779,Renal blood flow,Renal denervation.
نویسندگان مقاله | Hajaralsadat Hosseini-Dastgerdi
Department of Physiology, Medical School, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.


| Ali-Asghar Pourshanazari
Water and Electrolytes Research Center, Isfahan University of Medical Sciences, Isfahan, I.R. Iran. Department of Physiology, Medical School, Isfahan University of Medical Sciences, Isfahan, I.R. Iran. Isfahan MN Institute of Basic and Applied Sciences Research, Isfahan, I.R. Iran.


| Mehdi Nematbakhsh


نشانی اینترنتی http://rps.mui.ac.ir/index.php/jrps/article/view/2207
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