Journal
MEDICAL SCIENCE MONITOR BASIC RESEARCH
Volume 19, Issue -, Pages 267-270Publisher
INT SCIENTIFIC LITERATURE, INC
DOI: 10.12659/MSMBR.889540
Keywords
renalase mRNA; real-time PCR; spontaneously hypertensive rats; Wistar-Kyoto rats; tissue specific expression pattern
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Funding
- Russian Foundation for Basic Research [11-04-01181a]
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Background: Renalase is a recently discovered secretory protein involved in regulation of arterial blood pressure in humans and animals. Results of animal experiments from independent laboratories indicate that administration of human recombinant renalase decreases blood pressure and some genetically predisposed hypertensive rats have lowered renalase levels. Material/Methods: The levels of renalase mRNA expression in brain hemispheres, heart, and kidneys of spontaneously hypertensive rats (SHR) with moderate (140-180 mm Hg) or high (>180 mm Hg) hypertension and of control Wistar-Kyoto (WKY) rats were analyzed using real-time PCR. Results: Spontaneously hypertensive rats with high hypertension (>180 mm Hg) had a lower renalase mRNA level in brain hemispheres, and higher heart and kidney renalase mRNA levels compared with control WKY rats. In SHR with a moderate increase in arterial blood pressure (140-180 mm Hg), the tissue renalase mRNA changed in the same direction but did not reach the level of statistical significance as compared with control rats. Conclusions: The results indicate that the development of hypertension in SHR is accompanied by altered expression of the renalase gene in the examined organs as compared with control WKY rats. The brain and peripheral tissues renalase mRNA levels demonstrate opposite trends, which are obviously crucial for impaired regulation of blood pressure in SHR.
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