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Renal denervation

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https://www.readbyqxmd.com/read/28818859/renal-denervation-suppresses-coronary-hyperconstricting-responses-after-drug-eluting-stent-implantation-in-pigs-in-vivo-through-the-kidney-brain-heart-axis
#1
Hironori Uzuka, Yasuharu Matsumoto, Kensuke Nishimiya, Kazuma Ohyama, Hideaki Suzuki, Hirokazu Amamizu, Susumu Morosawa, Michinori Hirano, Tomohiko Shindo, Yoku Kikuchi, Kiyotaka Hao, Takashi Shiroto, Kenta Ito, Jun Takahashi, Koji Fukuda, Satoshi Miyata, Yoshihito Funaki, Hatsue Ishibashi-Ueda, Satoshi Yasuda, Hiroaki Shimokawa
OBJECTIVE: Drug-eluting stent-induced coronary hyperconstricting responses remain an important issue. The adventitia harbors a variety of components that potently modulate vascular tone, including sympathetic nerve fibers (SNF) and vasa vasorum. Catheter-based renal denervation (RDN) inhibits sympathetic nerve activity. We, thus, examined whether RDN suppresses drug-eluting stent-induced coronary hyperconstricting responses, and if so, what mechanisms are involved. APPROACH AND RESULTS: Protocol 1: pigs implanted with everolimus-eluting stents into the left coronary arteries underwent coronary angiography at 1 month after implantation for assessment of coronary vasomotion and adventitial SNF formation...
August 17, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28815689/medication-adherence-in-patients-with-apparent-resistant-hypertension-findings-from-the-sympathy-trial
#2
R L de Jager, E M van Maarseveen, M L Bots, P J Blankestijn
INTRODUCTION: Hypertension is only controlled in approximately 35% of the patients, which could be partially due to non-adherence. Recently, bioanalytical assessment of adherence to blood pressure (BP) lowering drugs has gaining interest. Our aim was to explore possible determinants of non-adherence in treatment resistant hypertension, assessed by objective screening for antihypertensive agents in serum. Secondary aim was to study the effect of adherence on the change in BP. METHODS: This project was a sub-study of SYMPATHY; an open-label randomized-controlled trial to assess the effect of renal denervation on BP six months after treatment compared to usual care in patients with resistant hypertension...
August 17, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28810725/does-renal-denervation-lower-sympathetic-activity
#3
Peter J Blankestijn
No abstract text is available yet for this article.
August 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28810724/sympathetic-nerve-traffic-and-blood-pressure-changes-after-bilateral-renal-denervation-in-resistant-hypertension-a-time-integrated-analysis
#4
Gino Seravalle, Graziella D'Arrigo, Giovanni Tripepi, Francesca Mallamaci, Gianmaria Brambilla, Giuseppe Mancia, Guido Grassi, Carmine Zoccali
Background: Renal denervation reduces blood pressure (BP) and sympathetic drive in experimental animal models, but the effect of this intervention on sympathetic activity in patients with treatment-resistant hypertension is still unclear. Methods: In an incident series of 29 patients with treatment-resistant hypertension, we performed serial measurements (n = 123) of muscle sympathetic nerve activity (MSNA, microneurography) and standardized BP measurements. Data were analysed by mixed linear modelling (MLM) and by regression analysis of time-integrated changes of both MSNA and synchronous, standardized (in-lab) BP measurements...
August 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28771706/predictive-factors-for-successful-renal-denervation-should-we-use-them-in-clinical-trials
#5
REVIEW
Nicolas Barber-Chamoux, Murray D Esler
Renal denervation is facing various challenges to its initial claimed value in hypertension treatment. Major concerns are the choice of the patients and the technical efficacy of the renal denervation. Different factors have been described as predicting the capacity of renal denervation to decrease blood pressure. These factors are related to the patients, the procedure and the tools to confirm successful neural ablation. Their use in future trials should help to improve renal denervation trials understanding and outcomes...
August 3, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28767486/effects-of-renal-denervation-on-short-term-blood-pressure-variability-lack-of-meta-analytic-evidence
#6
Dagmara Hering, Guido Grassi
No abstract text is available yet for this article.
September 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28741577/comparison-of-new-generation-renal-artery-denervation-systems-assessing-lesion-size-and-thermodynamics-using-a-thermochromic-liquid-crystal-phantom-model
#7
Sara I Al Raisi, Michael T Barry, Pierre Qian, Abhishek Bhaskaran, Jim Pouliopoulos, Pramesh Kovoor
AIM: To evaluate and compare lesion dimensions and thermodynamics of the new generation multi-electrode Symplicity Spyral and the new generation multi-electrode EnligHTN renal artery denervation systems, using a thermochromic liquid crystal phantom model. METHODS AND RESULTS: A previously described renal artery phantom model was used as a platform for radiofrequency ablation. A total of 32 radiofrequency ablations were performed using multi-electrode Symplicity Spyral (n=16) and new generation EnligHTN systems (n=16)...
July 25, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28734244/renal-denervation-attenuates-hypertension-and-renal-dysfunction-in-a-model-of-cardiovascular-and-renal-disease-which-is-associated-with-reduced-nadph-and-xanthine-oxidase-activity
#8
Maria Peleli, Peter Flacker, Zhengbing Zhuge, Cristina Gomez, Craig E Wheelock, A Erik G Persson, Mattias Carlstrom
Oxidative stress is considered a central pathophysiological event in cardiovascular disease, including hypertension. Early age reduction in renal mass is associated with hypertension and oxidative stress in later life, which is aggravated by increased salt intake. The aim of the present study was to examine if renal sympathetic denervation can exert blood pressure lowering effects in uninephrectomized (UNX) rats (3-week old) fed with high salt (HS, 4%; w/w) diet for 4 weeks. Moreover, we investigated if renal denervation is associated with changes in NADPH and xanthine oxidase-derived reactive oxygen species...
July 5, 2017: Redox Biology
https://www.readbyqxmd.com/read/28728540/preface-is-renal-denervation-effective-option-for-management-of-hypertension-in-asia
#9
Kazuomi Kario
No abstract text is available yet for this article.
2017: Current Hypertension Reviews
https://www.readbyqxmd.com/read/28704264/extravascular-renal-denervation-ameliorates-juvenile-hypertension-and-renal-damage-resulting-from-experimental-hyperleptinemia-in-rats
#10
Nynke R Oosterhuis, Ramon Fernandes, Nuria Maicas, Sung Eun Bae, Joaquim Pombo, Hendrik Gremmels, Lucilla Poston, Jaap A Joles, Anne-Maj Samuelsson
BACKGROUND: Material obesity in rodents is associated with neonatal hyperleptinemia and hypertension of sympathetic origin in adult offspring. Previously, we reported that experimentally induced hyperleptinemia in rat pups results in adulthood hypertension. Here, we addressed the hypothesis that experimental neonatal hyperleptinemia, through renal nerve activation, adversely affects adult renal function. METHOD: Sprague-Dawley male and female pups were treated with neonatal leptin (3 mg/kg, intraperitoneal) or neonatal saline, twice daily from postnatal day 9-14...
July 12, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28701323/renal-denervation-attenuates-hypertension-but-not-salt-sensitivity-in-etb-receptor-deficient-rats
#11
Bryan K Becker, Amanda C Feagans, Daian Chen, Malgorzata Kasztan, Chunhua Jin, Joshua S Speed, Jennifer S Pollock, David M Pollock
Hypertension is a prevalent pathology that increases risk for numerous cardiovascular diseases. Because the etiology of hypertension varies across patients, specific and effective therapeutic approaches are needed. The role of renal sympathetic nerves is established in numerous forms of hypertension, but their contribution to salt-sensitivity and interaction with factors such as endothelin-1 are poorly understood. Rats deficient of functional ETB receptors (ETB-def) on all tissues except sympathetic nerves are hypertensive and exhibit salt-sensitive increases in blood pressure...
July 12, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28694398/renal-sympathetic-denervation-assisted-treatment-of-electrical-storm-due-to-polymorphic-ventricular-tachycardia-in-a-patient-with-cathecolaminergic-polymorphic-ventricular-tachycardia
#12
Tolga Aksu, Tümer Erdem Güler, Kazım Serhan Özcan, Serdar Bozyel, Kıvanç Yalın
Electrical storm (ES) is not a rare clinical entity. Sympathetic hyperactivity may play critical role in development and continuation of ES. Some recent reports have demonstrated that catheter-based renal sympathetic denervation (RSD) may reduce sympathetic activation and have a potential role in reducing arrhythmic burden. A 46-year-old man was admitted to clinic with frequent implantable cardioverter defibrillator shocks and ES related to catecholaminergic polymorphic ventricular tachycardia (VT). Tachycardia was unresponsive to administration of beta-blockers, verapamil, and flecainide...
July 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28688830/differential-effects-of-renal-denervation-on-arterial-baroreceptor-function-in-goldblatt-hypertension-model
#13
Gisele S Lincevicius, Caroline G Shimoura, Erika E Nishi, Tales Oliveira, Juliana G Cespedes, Cássia T Bergamaschi, Ruy R Campos
Sympathetic vasomotor activity is significantly increased in renovascular hypertension. Renal denervation (DnX) has emerged as a novel therapy for resistant hypertension to drug therapy. However, the underlying mechanisms regarding the reduction in blood pressure (BP) after DnX remain unclear. Thus, the aim of this study was to evaluate the effects of DnX of a clipped kidney on the baseline and baroreceptor reflex control of post-ganglionic sympathetic activity to the contralateral kidney (rSNA) and lumbar (lSNA) nerves in Goldblatt hypertensive rats (2K1C)...
June 21, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28646466/effects-of-catheter-based-renal-denervation-on-heart-failure-with-reduced-ejection-fraction-a-systematic-review-and-meta-analysis
#14
REVIEW
Hidekatsu Fukuta, Toshihiko Goto, Kazuaki Wakami, Nobuyuki Ohte
Despite the recent advances in the management of heart failure, the mortality of heart failure patients remains high. It is of urgent need to develop new therapy for heart failure. Heart failure is characterized by increased sympathetic activity, and chronic sympathetic activation is involved in the maintenance of the pathological state. Catheter-based renal denervation (RDN) has emerged as an invasive but safe approach that can reduce sympathetic activation. Studies have reported inconsistent results regarding the effect of RDN in heart failure patients due to limited power with small sample sizes...
June 24, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28646097/highly-suggestive-preliminary-evidence-that-the-renal-interstitium-contracts-in%C3%A2-vivo
#15
Omar Flores-Sandoval, María Eugenia Sánchez-Briones, Juan F López-Rodríguez, Miriam Z Calvo-Turrubiartes, Lilia Llamazares-Azuara, Manuel Rodríguez-Martínez
To learn more about controlling renal interstitial hydrostatic pressure (RIHP), we assessed its response to renal medullary direct interstitial volume expansion (rmDIVE = 100 μL bolus infusion/30 sec). Three experimental series (S) were performed in hydropenic, anesthetized, right-nephrectomized, acute left renal-denervated and renal perfusion pressure-controlled rats randomly assigned to groups in each S. S1: Rats without hormonal clamp were contrasted before and after rmDIVE induced via 0.9% saline solution bolus (SS group) or 2% albumin in SS bolus (2% ALB + SS group)...
June 2017: Physiological Reports
https://www.readbyqxmd.com/read/28645757/sympathetic-response-and-outcomes-following-renal-denervation-in-patients-with-chronic-heart-failure-12-month-outcomes-from-the-symplicity-hf-feasibility-study
#16
Ingrid Hopper, Edoardo Gronda, Uta C Hoppe, Bengt Rundqvist, Thomas H Marwick, Sharad Shetty, Christopher Hayward, Thomas Lambert, Dagmara Hering, Murray Esler, Markus Schlaich, Antony Walton, Flavio Airoldi, Mathias-Christoph Brandt, Sidney A Cohen, Pascalle Reiters, Henry Krum
BACKGROUND: Heart failure (HF) is associated with chronic sympathetic activation. Renal denervation (RDN) aims to reduce sympathetic activity by ablating the renal sympathetic nerves. We investigated the effect of RDN in patients with chronic HF and concurrent renal dysfunction in a prospective, multicenter, single-arm feasibility study. METHODS AND RESULTS: Thirty-nine patients with chronic systolic HF (left ventricular ejection fraction [LVEF] <40%, New York Heart Association class II-III,) and renal impairment (estimated glomerular filtration rate [eGFR; assessed with the use of the Modification of Diet in Renal Disease equation] < 75 mL • min(-1) • 1...
June 20, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28645206/catheter-based-renal-denervation-as-therapy-for-chronic-severe-kidney-related-pain
#17
Rosa L de Jager, Niek F Casteleijn, Esther de Beus, Michiel L Bots, Evert-Jan E Vonken, Ron T Gansevoort, Peter J Blankestijn
Background: Loin pain haematuria syndrome (LPHS) and autosomal dominant polycystic kidney disease (ADPKD) are the most important non-urological conditions to cause chronic severe kidney-related pain. Multidisciplinary programmes and surgical methods have shown inconsistent results with respect to pain reduction. Percutaneous catheter-based renal denervation (RDN) could be a less invasive treatment option for these patients. Methods: Our aim was to explore the change in perceived pain and use of analgesic medication from baseline to 3, 6 and 12 months after RDN...
June 22, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28639746/acute-changes-in-histopathology-and-intravascular-imaging-after-catheter-based-renal-denervation-in-a-porcine-model
#18
Atsushi Sakaoka, Akiyuki Takami, Yuji Onimura, Hitomi Hagiwara, Hisako Terao, Fumiaki Kumagai, Kiyoshi Matsumura
OBJECTIVES: We first aimed to identify the histopathological changes occurring immediately after renal denervation (RDN) with radiofrequency energy, and then to assess the feasibility of determining procedural success using currently available clinical intravascular imaging techniques. BACKGROUND: Catheter-based RDN has been used as an alternative therapy for hypertension. However, no practical endpoint to determine procedural success during treatment has been established...
June 22, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28639575/account-for-clinical-heterogeneity-in-assessment-of-catheter-based-renal-denervation-among-resistant-hypertension-patients-subgroup-meta-analysis
#19
Xiao-Han Chen, Sehee Kim, Xiao-Xi Zeng, Zhi-Bing Chen, Tian-Lei Cui, Zhang-Xue Hu, Yi Li, Ping Fu
BACKGROUND: Catheter-based renal denervation (RDN) is a novel treatment for resistant hypertension (RH). A recent meta-analysis reported that RDN did not significantly reduce blood pressure (BP) based on the pooled effects with mild to severe heterogeneity. The aim of the present study was to identify and reduce clinical sources of heterogeneity and reassess the safety and efficacy of RDN within the identified homogeneous subpopulations. METHODS: This was a meta-analysis of 9 randomized clinical trials (RCTs) among patients with RH up to June 2016...
July 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28632750/renal-sodium-handling-and-blood-pressure-changes-in-gestational-protein-restricted-offspring-role-of-renal-nerves-and-ganglia-neurokinin-expression
#20
Augusto H Custódio, Marcelo C de Lima, Bárbara Vaccari, Patrícia A Boer, José A R Gontijo
BACKGROUND: Considering long-term changes in renal sodium handling and blood pressure in maternal protein-restricted (LP) offspring, we assumed that the development of LP hypertension results from abnormal dorsal root ganglia (DRG) neurokinin expression associated with impaired responsiveness of renal sensory receptors, promoting a reduced urinary excretion of sodium. The present study investigates whether increased blood pressure in protein-restricted offspring would be associated with changes in the DRG cells and in renal pelvic wall expression of NK1R, SP and CGRP when compared to NP offspring...
2017: PloS One
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