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Renal sympathetic denervation

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https://www.readbyqxmd.com/read/28106665/effects-of-multielectrode-renal-denervation-on-elevated-sympathetic-nerve-activity-and-insulin-resistance-in-metabolic-syndrome
#1
Costas Tsioufis, Kyriakos Dimitriadis, Alexandros Kasiakogias, Theodore Kalos, Ioannis Liatakis, Evagelia Koutra, Levki Nikolopoulou, Athanasios Kordalis, Rita Omega Ella, Elizabeth Oi-Yan Lau, Guido Grassi, Vasilios Papademetriou, Dimitrios Tousoulis
OBJECTIVE: This study aimed to investigate the effects of renal denervation (RDN) on sympathetic nerve activity and insulin resistance in patients with metabolic syndrome. METHODS: Seventeen patients fulfilled at least four of five criteria for metabolic syndrome and under stable use of at least two antihypertensive drugs were randomized in 3 : 1 ratio to RDN (n = 13, 12 men, age: 58 ± 7 years) and control groups (n = 4, three men, age: 60 ± 5 years) and followed up for 3 months...
January 18, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28104100/pathophysiologic-mechanisms-in-heart-failure-role-of-the-sympathetic-nervous-system
#2
Steve Antoine, Gaurang Vaidya, Haider Imam, Daniel Villarreal
The syndrome of heart failure involves complex pathophysiologic mechanisms and is associated with extremely high-morbidity, mortality and economic costs. This growing global epidemic has diverse etiologies and is fundamentally characterized by dyshomeostasis between heart and kidneys, leading to development and progression of the cardiorenal syndrome. Excessive and sustained sympathoexcitation has emerged as a single prominent factor involved in the structural and functional dysfunction of multiple organ systems during this disease...
January 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28089459/effect-of-renal-denervation-on-kidney-function-in-patients-with-chronic-kidney-disease
#3
Dagmara Hering, Petra Marusic, Jacqueline Duval, Yusuke Sata, Geoffrey A Head, Kate M Denton, Sally Burrows, Antony S Walton, Murray D Esler, Markus P Schlaich
AIMS: Renal denervation (RDN) can reduce blood pressure (BP) and slow the decline of renal function in chronic kidney disease (CKD) up to one year. Whether this effect is maintained beyond 12months and whether the magnitude of BP reduction affects estimated glomerular filtration rate (eGFR) is unknown. METHODS AND RESULTS: We examined eGFR in 46 CKD patients (baseline eGFR ≤60mL/min/1.73m(2)) on a yearly basis from 60months before to 3, 6, 12 and 24months after RDN...
January 6, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28052866/renal-denervation-in-male-rats-with-heart-failure-improves-ventricular-sympathetic-nerve-innervation-and-function
#4
Maximilian Ichabod Pinkham, Michael T Loftus, Satya Amirapu, Sarah-Jane Guild, Gina Quill, William R Woodward, Beth A Habecker, Carolyn J Barrett
Heart failure is characterized by the loss of sympathetic innervation to the ventricles, contributing to impaired cardiac function and arrhythmogenesis. We hypothesized that renal denervation (RDx) would reverse this loss. Male Wistar rats underwent myocardial infarction (MI) or sham surgery and progressed into heart failure for four weeks before receiving bilateral RDx or sham RDx. After a further three weeks, left ventricular (LV) function was assessed and ventricular sympathetic nerve fibre density determined via histology...
January 4, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28044984/serial-quantitative-magnetic-resonance-angiography-follow-up-of-renal-artery-dimensions-following-treatment-by-four-different-renal-denervation-systems
#5
Laurens van Zandvoort, Matthijs van Kranenburg, Antonios Karanasos, Nicolas Van Mieghem, Mohammed Ouhlous, Robert-Jan van Geuns, Ron van Domburg, Joost Daemen
AIMS: Renal sympathetic denervation (RDN) is being studied as a therapeutic option for patients with therapy resistant hypertension. It remains unclear if the procedure affects the renal arteries in such a way that luminal narrowing might occur at the mid- to longer-term. METHODS AND RESULTS: In a prospective cohort of 27 patients referred for RDN, quantitative magnetic resonance angiography (MRA) was used to assess 52 vessels at baseline, 6-, and 12 months post treatment with one out of four different devices...
January 3, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28030955/reno-cerebral-reflex-activates-renin-angiotensin-system-promoting-oxidative-stress-and-renal-damage-after-ischemia-reperfusion-injury
#6
Wei Cao, Aiqing Li, Jiawen Li, Chunyi Wu, Shuang Cui, Zhanmei Zhou, Youhua Liu, Christopher Stuart Wilcox, Fan Fan Hou
AIMS: A kidney-brain interaction has been described in acute kidney injury but the mechanisms are uncertain. Since we recently described a reno-cerebral reflex, we tested the hypothesis that renal ischemia-reperfusion injury activates a sympathetic reflex that interlinks the renal and cerebral renin-angiotensin axis to promote oxidative stress and progression of the injury. RESULTS: Bilateral ischemia-reperfusion activated the intrarenal and cerebral, but not the circulating, renin-angiotensin system, increased sympathetic activity in the kidney and the cerebral sympathetic regulatory regions, and induced brain inflammation and kidney injury...
December 28, 2016: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27988231/effects-of-percutaneous-renal-sympathetic-denervation-on-cardiac-function-and-exercise-tolerance-in-patients-with-chronic-heart-failure
#7
Jun-Qing Gao, Yun Xie, Wei Yang, Jian-Pu Zheng, Zong-Jun Liu
INTRODUCTION: Sympathetic hyperactivity, a vital factor in the genesis and development of heart failure (HF), has been reported to be effectively reduced by percutaneous renal denervation (RDN), which may play an important role in HF treatment. OBJECTIVE: To determine the effects of percutaneous RDN on cardiac function in patients with chronic HF (CHF). METHODS: Fourteen patients (mean age 69.6 years; ejection fraction [EF] <45%) with CHF received bilateral RDN...
January 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/27979323/renal-denervation-in-heart-failure-modulating-the-sympathetic-nervous-system
#8
Joana Delgado Silva
No abstract text is available yet for this article.
January 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/27970150/tct-764-effects-of-multielectrode-renal-denervation-on-sympathetic-nerve-activity-and-insulin-resistance-in-metabolic-syndrome
#9
Konstantinos Tsioufis, Kyriakos Dimitriadis, Alexandros Kasiakogias, Theodoros Kalos, Ioannis Liatakis, Evaggelia Koutra, Lefki Nikolopoulou, Rita Ella, Elizabeth Lau, Vasilios Papademetriou, Dimitrios Tousoulis
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27970149/tct-765-renal-sympathetic-denervation-impact-on-hypertensive-disease
#10
Ana Rita Francisco, Miguel Nobre Menezes, Alexandra Lopes, Helena Correia, Eduardo Infante de Oliveira, Pedro Canas da Silva, Fausto J Pinto
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27957627/blood-pressure-response-to-catheter-based-renal-sympathetic-denervation-in-severe-resistant-hypertension-data-from-the-greek-renal-denervation-registry
#11
C Tsioufis, A Ziakas, K Dimitriadis, P Davlouros, M Marketou, A Kasiakogias, C Thomopoulos, D Petroglou, D Tsiachris, M Doumas, E Skalidas, C Karvounis, D Alexopoulos, P Vardas, I Kallikazaros, C Stefanadis, V Papademetriou, D Tousoulis
BACKGROUND/INTRODUCTION: The efficacy of catheter-based renal sympathetic denervation (RDN) in terms of blood pressure (BP) reduction has been questioned, while "real-world" data from registries are needed. In this study, we report the complete set of 12-month data on office and ambulatory BP changes as well as the predictors for BP response to RDN from a national registry. METHODS: In 4 Greek hospital centers, 79 patients with severe drug-resistant hypertension (age 59 ± 10 years, 53 males, body mass index 33 ± 5 kg/m(2); office BP and 24-h ambulatory BP were 176 ± 15/95 ± 13 and 155 ± 14/90 ± 12 mmHg, respectively, 4...
December 12, 2016: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/27957419/pulmonary-vein-isolation-alone-and-combined-with-renal-sympathetic-denervation-in-chronic-kidney-disease-patients-with-refractory-atrial-fibrillation
#12
Márcio G Kiuchi, Shaojie Chen, Gustavo R E Silva, Luis M R Paz, Tetsuaki Kiuchi, Ary G de Paula Filho, Gladyston L L Souto
BACKGROUND: Atrial fibrillation (AF) commonly occurs in association with chronic kidney disease (CKD), resulting in adverse outcomes. Combining pulmonary vein isolation (PVI) and renal sympathetic denervation (RSD) may reduce the recurrence of AF in patients with CKD and hypertension. We considered that RSD could reduce the recurrence of AF in patients with CKD by modulating sympathetic hyperactivity. Our goal was to compare the impact of PVI + RSD with that of PVI alone in patients with concurrent AF and CKD...
December 2016: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/27956575/renal-denervation-reduces-monocyte-activation-and-monocyte-platelet-aggregate-formation-an-anti-inflammatory-effect-relevant-for-cardiovascular-risk
#13
Maria T K Zaldivia, Jennifer Rivera, Dagmara Hering, Petra Marusic, Yusuke Sata, Bock Lim, Nina Eikelis, Rebecca Lee, Gavin W Lambert, Murray D Esler, Nay M Htun, Jacqueline Duval, Louise Hammond, Steffen U Eisenhardt, Ulrike Flierl, Markus P Schlaich, Karlheinz Peter
Overactivation of renal sympathetic nervous system and low-grade systemic inflammation are common features of hypertension. Renal denervation (RDN) reduces sympathetic activity in patients with resistant hypertension. However, its effect on systemic inflammation has not been examined. We prospectively investigated the effect of RDN on monocyte activation and inflammation in patients with uncontrolled hypertension scheduled for RDN. Ambulatory blood pressure, monocyte, and monocyte subset activation and inflammatory markers were assessed at baseline, 3 months, and 6 months after procedure in 42 patients...
December 12, 2016: Hypertension
https://www.readbyqxmd.com/read/27932204/total-renal-denervation-reduces-sympathoexcitation-to-different-target-organs-in-a-model-of-chronic-kidney-disease
#14
REVIEW
Glaucia L Veiga, Erika E Nishi, Heder F Estrela, Gisele S Lincevicius, Guiomar N Gomes, Alex Y Simões Sato, Ruy R Campos, Cássia T Bergamaschi
It is known that increased sympathetic nerve activity in chronic kidney disease (CKD) progressively worsens kidney function and hypertension. We tested the hypothesis that total renal denervation contributes to reduce sympathetic activation to different beds and improves renal function in 5/6 nephrectomy model of CKD in male Wistar rats. After eight weeks of 5/6 nephrectomy surgery there was an increase in mean arterial pressure (CKD 179±22mmHg, n=6 vs. control animals 108±9; p<0.05, n=6) with no changes in heart rate (HR)...
December 1, 2016: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/27922849/renal-denervation-for-uncontrolled-hypertension-critical-review-of-the-evidence
#15
Chongjia Chen, Ashish Upadhyay
PURPOSE OF REVIEW: Hypertension (HTN) is a major global public health problem. Endovascular catheter-based radiofrequency ablation of renal sympathetic nerve endings (renal denervation) is a novel treatment option for uncontrolled HTN. RECENT FINDINGS: Early clinical studies primarily in Australia and Europe established renal denervation as a well tolerated and feasible procedure that resulted in a sustained reduction in blood pressure among individuals with severe resistant HTN...
December 2, 2016: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27917928/renal-denervation-improves-the-baroreflex-and-gaba-system-in-chronic-kidney-disease-induced-hypertension
#16
Hsin-Hung Chen, Pei-Wen Cheng, Wen-Yu Ho, Pei-Jung Lu, Chi-Cheng Lai, Yang-Ming Tseng, Hua-Chang Fang, Gwo-Ching Sun, Michael Hsiao, Chun-Peng Liu, Ching-Jiunn Tseng
Hypertensive rats with chronic kidney disease (CKD) exhibit enhanced gamma-aminobutyric acid (GABA)B receptor function and regulation within the nucleus tractus solitarii (NTS). For CKD with hypertension, renal denervation (RD) interrupts the afferent renal sympathetic nerves, which are connecting to the NTS. The objective of the present study was to investigate how RD improves CKD-induced hypertension. Rats underwent 5/6 nephrectomy for 8 weeks, which induced CKD and hypertension. RD was induced by applying phenol to surround the renal artery in CKD...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27908698/potential-role-of-endurance-training-in-altering-renal-sympathetic-nerve-activity-in-ckd
#17
REVIEW
Erin J Howden, Justin S Lawley, Murray Esler, Benjamin D Levine
Chronic kidney disease (CKD), is characterized by a progressive loss of renal function and increase in cardiovascular risk. In this review paper, we discuss the pathophysiology of increased sympathetic nerve activity in CKD patients and raise the possibility of endurance exercise being an effective countermeasure to address this problem. We specifically focus on the potential role of endurance training in altering renal sympathetic nerve activity as increased renal sympathetic nerve activity negatively impacts kidney function as well indirectly effects multiple other systems and organs...
November 25, 2016: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/27906840/renal-artery-denervation-for-treatment-of-patients-with-self-reported-obstructive-sleep-apnea-and-resistant-hypertension-results-from-the-global-symplicity-registry
#18
Dominik Linz, Giuseppe Mancia, Felix Mahfoud, Krzysztof Narkiewicz, Luis Ruilope, Markus Schlaich, Ingrid Kindermann, Roland E Schmieder, Sebastian Ewen, Bryan Williams, Michael Böhm
BACKGROUND: Sleep-disordered breathing, predominantly obstructive sleep apnea (OSA), is highly prevalent in patients with hypertension. OSA may underlie the progression to resistant hypertension, partly due to increased activation of the sympathetic nervous system. This analysis of patients with and without OSA evaluated the blood pressure (BP)-lowering effect of sympathetic modulation by renal denervation (RDN) in a real-world setting. METHODS: The Global SYMPLICITY Registry (NCT01534299) is a prospective, open-label, multicenter registry conducted worldwide to evaluate the safety and effectiveness of RDN in patients with uncontrolled hypertension...
January 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/27905168/editorial-can-renal-denervation-work-yes-but-first-one-must-denervate-lessons-from-human-renal-sympathetic-nerve-anatomy
#19
EDITORIAL
Tim A Fischell
No abstract text is available yet for this article.
December 2016: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/27890860/renal-denervation-by-ct-guided-periarterial-injection-of-hyperosmolar-saline-vincristine-paclitaxel-and-guanethidine-in-a-pig-model
#20
Patrick Freyhardt, Ricardo Donners, Alex Riemert, Jörg Schnorr, Nicola Stolzenburg, Jan Leo Rinnenthal, Ulrich Bernhardt, Bernd Hamm, Rolf W Günther, Florian Streitparth
AIMS: To evaluate feasibility, safety and efficacy of renal sympathetic denervation with CT- guided periarterial injection of potentially neurolytic agents in pigs. METHODS AND RESULTS: Unilateral injection of formulations containing either 5 M hyperosmolar saline, vincristine, paclitaxel or guanethidine around the renal artery was performed in 24 normotensive pigs with 6 animals per group. Needle placement and injections were performed under CT-fluoroscopy guidance...
November 29, 2016: EuroIntervention
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