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Distribution of cocaine and amphetamine regulated transcript in ureters and urinary bladder of hypertensive rats
Vol 27, Issue 2, 2013
Abstract
Cocaine and amphetamine regulated transcript (CART), a neuropeptide of the central and peripheral nervous system plays an essential role in maintaining body homeostasis by regulating body temperature, orexia, digestive motility and blood pressure. Very few studies describe the relationship of hyperten¬sion with CART. Therefore, the present research was undertaken to identify, locate and determine the number of CART-immunopositive neuroendocrine cells (NE) and structures in the urinary bladder and ureter of rats with experimentally induced nephrogenic hypertension. The experiments were conducted on 20 Wistar rats in which hypertension was experimentally induced by applying a clamp on the left renal artery based on the two kidney, one clip experimental model (2K1C). After 6 weeks, fragments of the ureters and urinary bladder were sampled from rats with permanent hypertension. Immunohisto¬chemical analyses revealed a salient effect of renovascular hypertension on the neuroendocrine system of rat ureters and urinary bladder. Differences in the number of neuroendocrine cells and in the density of CART-positive structures were identified between the hypertensive and normotensive (control) rats. Hypertension greatly increased the number of NE cells and the density of CART- immunoreactive (IR) structures in the analysed urinary system organs.
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Copyright (c) 2013 I. Janiuk, I. Kasacka
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Medical Genetics, University of Torino Medical School, Italy

Department of Biomedical, Surgical and Dental Sciences, University of Milan, Italy