Please use this identifier to cite or link to this item: http://ahro.austin.org.au/austinjspui/handle/1/9481
Title: Regulation of angiotensin II receptors in the prostate of the transgenic (mRen-2)27 rat: effect of angiotensin-converting enzyme inhibition.
Authors: Fabiani, Maurice E;Hawkes, David J;Frauman, Albert G;Tikellis, Christos;Johnston, Colin I;Wilkinson-Berka, Jennifer L
Affiliation: Department of Medicine, University of Melbourne, Austin and Repatriation Medical Centre, Heidelberg, VIC 3084, Australia. m.fabiani@austin.unimelb.edu.au
Issue Date: 1-Jun-2003
Citation: The International Journal of Biochemistry & Cell Biology; 35(6): 973-83
Abstract: We examined the regulation/expression of angiotensin II (Ang II) receptors in the transgenic (TG) (mRen-2)27 rat compared to the normal Sprague-Dawley (SD) rat. Ang II receptor binding and mRNA expression were determined by quantitative autoradiography and real-time PCR, respectively. Ang II receptors in the rat prostate rat were of the AT(1) receptor subtype and were significantly reduced in the prostate of the TG rat compared to the normal SD rat. However, AT(1) receptor binding was significantly higher in the prostate of the TG rat treated with the ACE inhibitor lisinopril compared to the untreated TG rat and comparable to the control SD rat. In contrast to the protein, AT(1) receptor mRNA expression was not reduced in the prostate of the TG rat compared to the SD rat. However, AT(1) receptor mRNA was markedly reduced in the prostate of the lisinopril-treated TG rat compared to the untreated TG rat or control SD rat. In conclusion, the findings suggest that AT(1) receptors are present in the rat prostate at a protein level and are subject to down-regulation in the TG rat which may be due to receptor internalisation as a consequence of receptor hyper-stimulation by increased local tissue levels of Ang II. Moreover, AT(1) receptor protein and mRNA expression in the prostate may be inversely modulated.
Internal ID Number: 12676181
URI: http://ahro.austin.org.au/austinjspui/handle/1/9481
URL: http://www.ncbi.nlm.nih.gov/pubmed/12676181
Type: Journal Article
Subjects: Adaptor Proteins, Signal Transducing
Angiotensin-Converting Enzyme Inhibitors.pharmacology
Animals
Animals, Genetically Modified
Autoradiography
Carrier Proteins.biosynthesis
Down-Regulation
Lisinopril.pharmacology
Male
Peptidyl-Dipeptidase A.metabolism
Prostate.drug effects.metabolism
RNA, Messenger.biosynthesis
Rats
Rats, Sprague-Dawley
Receptor, Angiotensin, Type 1
Receptors, Angiotensin.biosynthesis.metabolism
Reverse Transcriptase Polymerase Chain Reaction
Appears in Collections:Journal articles

Files in This Item:
There are no files associated with this item.


Items in AHRO are protected by copyright, with all rights reserved, unless otherwise indicated.