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Renal Sympathetic Denervation Attenuates Congestive Heart Failure in Angiotensin II-Dependent Hypertension: Studies with Ren-2 Transgenic Hypertensive Rats with Aortocaval Fistula
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SYSNO ASEP 0541694 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Renal Sympathetic Denervation Attenuates Congestive Heart Failure in Angiotensin II-Dependent Hypertension: Studies with Ren-2 Transgenic Hypertensive Rats with Aortocaval Fistula Author(s) Honetschlagerová, Z. (CZ)
Gawrys, O. (CZ)
Jíchová, Š. (CZ)
Škaroupková, P. (CZ)
Kikerlová, S. (CZ)
Vaňourková, Z. (CZ)
Husková, Z. (CZ)
Melenovský, V. (CZ)
Kompanowska - Jezierska, E. (PL)
Sadowski, J. (PL)
Kolář, František (FGU-C) RID, ORCID, SAI
Novotný, J. (CZ)
Hejnová, L. (CZ)
Kujal, P. (CZ)
Červenka, L. (CZ)Source Title Kidney & Blood Pressure Research. - : Karger - ISSN 1420-4096
Roč. 46, č. 1 (2021), s. 95-113Number of pages 19 s. Language eng - English Country CH - Switzerland Keywords congestive heart failure ; hypertension ; aortocaval fistula ; renal blood flow ; renal vascular reactivity ; angiotensin II ; renal denervation Subject RIV FA - Cardiovascular Diseases incl. Cardiotharic Surgery OECD category Cardiac and Cardiovascular systems R&D Projects NV18-02-00053 GA MZd - Ministry of Health (MZ) Method of publishing Open access Institutional support FGU-C - RVO:67985823 UT WOS 000614589100001 EID SCOPUS 85100625214 DOI 10.1159/000513071 Annotation Objective: We examined if renal denervation (RDN) attenuates the progression of aortocaval fistula (ACF)-induced heart failure or improves renal hemodynamics in Ren-2 transgenic rats (TGR), a model of angiotensin II (ANG II)-dependent hypertension. Methods: Bilateral RDN was performed 1 week after creation of ACF. The animals studied were ACF TGR and sham-operated controls, and both groups were subjected to RDN or sham denervation. In separate groups, renal artery blood flow (RBF) responses were determined to intrarenal ANG II (2 and 8 ng), norepinephrine (NE) (20 and 40 ng) and acetylcholine (Ach) (10 and 40 ng) 3 weeks after ACF creation. Results: In nondenervated ACF TGR, the final survival rate was 10 versus 50% in RDN rats. RBF was significantly lower in ACF TGR than in sham-operated TGR (6.2 +/- 0.3 vs. 9.7 +/- 0.5 mL min(-1) g(-1), p < 0.05), the levels unaffected by RDN. Both doses of ANG II decreased RBF more in ACF TGR than in sham-operated TGR (-19 +/- 3 vs. -9 +/- 2% and -47 +/- 3 vs. -22 +/- 2%, p < 0.05 in both cases). RDN did not alter RBF responses to the lower dose, but increased it to the higher dose of ANG II in sham-operated as well as in ACF TGR. NE comparably decreased RBF in ACF TGR and sham-operated TGR, and RDN increased RBF responsiveness. Intrarenal Ach increased RBF significantly more in ACF TGR than in sham-operated TGR (29 +/- 3 vs. 17 +/- 3%, p < 0.05), the changes unaffected by RDN. ACF creation induced marked bilateral cardiac hypertrophy and lung congestion, both attenuated by RDN. In sham-operated but not in ACF TGR, RDN significantly decreased mean arterial pressure. Conclusion: The results show that RDN significantly improved survival rate in ACF TGR, however, this beneficial effect was not associated with improvement of reduced RBF or with attenuation of exaggerated renal vascular responsiveness to ANG II. Workplace Institute of Physiology Contact Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400 Year of Publishing 2022 Electronic address https://doi.org/10.1159/000513071
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