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Christophides T, Somaschini A, Demarchi A, Cornara S, Androulaki M, Androulakis E. New Drugs and Interventional Strategies for the Management of Hypertension. Curr Pharm Des 2021; 27:1396-1406. [PMID: 33155904 DOI: 10.2174/1381612826666201106091527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 09/16/2020] [Indexed: 11/22/2022]
Abstract
Essential hypertension is an important cause of cardiovascular morbidity and mortality worldwide with significant clinical and economic implications. The field of antihypertensive treatment already numbers numerous agents and classes of drugs. However, patients are still developing uncontrolled hypertension. Hence there is a continuous need for novel agents with good tolerability. Advances in this field are focusing both on pharmacotherapy, with the developments in traditional and non-traditional targets, as well as interventional techniques such as renal denervation and baroreflex activation therapy. It is likely that future strategies may involve a tailored approach to the individual patient, with genetic modulation playing a key role.
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Bertog S, Sharma A, Mahfoud F, Pathak A, Schmieder RE, Sievert K, Papademetriou V, Weber MA, Haratani N, Lobo MD, Saxena M, Kandzari DE, Fischell TA, Sievert H. Alcohol-Mediated Renal Sympathetic Neurolysis for the Treatment of Hypertension: The Peregrine™ Infusion Catheter. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2020; 24:77-86. [PMID: 32958438 DOI: 10.1016/j.carrev.2020.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 08/15/2020] [Accepted: 09/01/2020] [Indexed: 01/12/2023]
Abstract
Renal sympathetic denervation using conventional non-irrigated radiofrequency catheters has potential technical shortcomings, including limited penetration depth and incomplete circumferential nerve damage, potentially impacting therapeutic efficacy. Against this background, second generation multi-electrode, radiofrequency and ultrasound renal denervation systems have been developed to provide more consistent circumferential nerve ablation. Irrigated catheters may allow deeper penetration while minimizing arterial injury. In this context, catheter-based chemical denervation, with selective infusion of alcohol, a potent neurolytic agent, into the perivascular space, may minimize endothelial, intimal and medial injury while providing circumferential neurolysis. Animal studies demonstrate pronounced renal norepinephrine level reductions and consistent renal nerve injury after perivascular alcohol infusion using the Peregrine Catheter. Early clinical studies demonstrated significant blood pressure reductions and a reasonable safety profile. Randomized sham-controlled trials (NCT03503773, NCT02910414) are underway to examine whether the aforementioned theoretical advantages of alcohol-medicated denervation with the Peregrine System™ Kit translate into clinical benefits.
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Affiliation(s)
- Stefan Bertog
- CardioVascular Center Frankfurt, Frankfurt, Germany; Minneapolis Veterans Affairs Medical Center, Minneapolis, USA
| | - Alok Sharma
- Minneapolis Veterans Affairs Medical Center, Minneapolis, USA
| | - Felix Mahfoud
- Saarland University Hospital, Internal Medicine III, Cardiology, Angiology, Intensive Care Medicine, Homburg/Saar, Germany; Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Atul Pathak
- Department of Cardiovascular Medicine, Princess Grace Hospital, Monaco
| | - Roland E Schmieder
- University Hospital of the Friedrich Alexander University Erlangen-Nürnberg, Germany
| | - Kolja Sievert
- CardioVascular Center Frankfurt, Frankfurt, Germany; Johannes Gutenberg Universität, Mainz, Germany
| | | | | | | | - Melvin D Lobo
- Barts NIHR Biomedical Research Centre, William Harvey Research Institute, Queen Mary University, London, UK
| | - Manish Saxena
- Barts NIHR Biomedical Research Centre, William Harvey Research Institute, Queen Mary University, London, UK
| | | | | | - Horst Sievert
- CardioVascular Center Frankfurt, Frankfurt, Germany; Anglia Ruskin University, Chelmsford, UK.
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Renal Denervation by Transaortic Periarterial Ethanol Injection: An Experimental Study in Porcines. Cardiovasc Intervent Radiol 2018; 41:1943-1951. [PMID: 30088063 DOI: 10.1007/s00270-018-2045-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 07/23/2018] [Indexed: 10/28/2022]
Abstract
AIMS To evaluate the feasibility, safety and efficacy of renal sympathetic denervation via endoluminal transaortic periarterial ethanol injection. METHODS AND RESULTS In 11 normotensive pigs transaortic puncture was performed with a 90-cm 21G needle with subsequent unilateral ethanol injection to the periarterial space. Needle placement was achieved using a 7F steerable sheath fluoroscopically positioned slightly above the renal artery origin. Blood pressure measurements and abdominal CT scans were performed immediately pre- and postintervention and 4 weeks later. After euthanasia norepinephrine concentration of both kidneys (RTNEC) was determined and renal arteries and surrounding tissues histologically examined to assess induced nerve fibre degeneration. RESULTS All but one procedure were technically successful. One major complication with accidental ethanol injection into the renal artery and subsequent infarction occurred. One pig died from no intervention-related cardiac arrest. The 4-week follow-up was uneventful in the remaining 10 animals. RTNEC was significantly lower on the treated side in eight of ten pigs (mean decrease 36.6%) with correlating histopathological signs of nerve degeneration. CONCLUSIONS Renal sympathicolysis by transaortic periarterial ethanol injection was feasible and effective in a porcine model. This approach may be an alternative to catheter-based RFA or other methods of renal denervation.
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Freyhardt P, Donners R, Riemert A, Schnorr J, Stolzenburg N, Rinnenthal JL, Bernhardt U, Hamm B, Günther RW, Streitparth F. Renal denervation by CT-guided periarterial injection of hyperosmolar saline, vincristine, paclitaxel and guanethidine in a pig model. EUROINTERVENTION 2017; 12:e2262-e2270. [PMID: 27890860 DOI: 10.4244/eij-d-15-00354] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIMS The aim of the study was to evaluate the 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 5M hyperosmolar saline, vincristine, paclitaxel or guanethidine around the renal artery was performed in 24 normotensive pigs with six animals per group. Needle placement and injections were performed under CT fluoroscopy guidance. Blood pressure measurements and CT scans were performed immediately before and after the intervention and four weeks after treatment. After euthanasia, norepinephrine (NE) concentrations of both kidneys were determined. The renal arteries and surrounding tissue were examined histologically to evaluate nerve fibre degeneration. Procedures were technically successful with good periarterial distribution of the injectant in all but one pig in the guanethidine group. No major adverse events or post-interventional complications occurred. In the vincristine group, NE concentrations of the renal parenchyma were lower on the treated side in all pigs with a mean decrease of 53% (38%-62%, p<0.01) compared to the contralateral control. Correspondingly, histological examination revealed neural degeneration in all animals treated with vincristine. In the other groups, no significant drop of NE values, or histological signs of nerve fibre degeneration were found. CONCLUSIONS CT-guided periarterial injection of the different substances was feasible and safe. Renal sympathetic denervation was achieved with vincristine. In contrast, hyperosmolar saline, paclitaxel and guanethidine do not seem to be appropriate for renal denervation in a pig model at the dosage used.
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Affiliation(s)
- Patrick Freyhardt
- Department of Radiology, Charité Universitätsmedizin Berlin, Berlin, Germany
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Ricke J, Seidensticker M, Becker S, Schiefer J, Adamchic I, Lohfink K, Kandulski M, Heller A, Mertens PR. Renal Sympathetic Denervation by CT-Guided Ethanol Injection: A Phase II Pilot Trial of a Novel Technique. Cardiovasc Intervent Radiol 2015; 39:251-60. [PMID: 26634740 DOI: 10.1007/s00270-015-1261-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/19/2015] [Indexed: 11/27/2022]
Abstract
OBJECTIVES CT-guided ethanol-mediated renal sympathetic denervation in treatment of therapy-resistant hypertension was performed to assess patient safety and collect preliminary data on treatment efficacy. MATERIALS AND METHODS Eleven patients with therapy-resistant hypertension (blood pressure of >160 mmHg despite three different antihypertensive drugs including a diuretic) and following screening for secondary causes were enrolled in a phase II single arm open label pilot trial of CT-guided neurolysis of sympathetic renal innervation. Primary endpoint was safety, and secondary endpoint was a decrease of the mean office as well as 24-h systolic blood pressure in follow-up. Follow-up visits at 4 weeks, 3, and 6 months included 24-h blood pressure assessments, office blood pressure, laboratory values, as well as full clinical and quality of life assessments. RESULTS No toxicities ≥3° occurred. Three patients exhibited worsened kidney function in follow-up analyses. When accounting all patients, office systolic blood pressure decreased significantly at all follow-up visits (maximal mean decrease -41.2 mmHg at 3 months). The mean 24-h systolic blood pressure values decreased significantly at 3 months, but not at 6 months (mean: -9.7 and -6.3 mmHg, respectively). Exclusion of five patients who had failed catheter-based endovascular denervation and/or were incompliant for antihypertensive drug intake revealed a more pronounced decrease of 24-h systolic blood pressure (mean: -18.3 and -15.2 mmHg at 3 and 6 months, p = 0.03 and 0.06). CONCLUSION CT-guided sympathetic denervation proved to be safe and applicable under various anatomical conditions with more renal arteries and such of small diameter.
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Affiliation(s)
- J Ricke
- Department of Radiology and Nuclear Medicine, Universitätsklinikum Magdeburg AöR, Otto-von-Guericke University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany.
- Deutsche Akademie für Mikrotherapie, Magdeburg, Germany.
| | - M Seidensticker
- Department of Radiology and Nuclear Medicine, Universitätsklinikum Magdeburg AöR, Otto-von-Guericke University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
- Deutsche Akademie für Mikrotherapie, Magdeburg, Germany
| | - S Becker
- Department of Radiology and Nuclear Medicine, Universitätsklinikum Magdeburg AöR, Otto-von-Guericke University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
- Department of Nephrology and Hypertension, Diabetes and Endocrinology, Universitätsklinikum Magdeburg AöR, Magdeburg, Germany
| | - J Schiefer
- Department of Nephrology and Hypertension, Diabetes and Endocrinology, Universitätsklinikum Magdeburg AöR, Magdeburg, Germany
| | - I Adamchic
- Department of Radiology and Nuclear Medicine, Universitätsklinikum Magdeburg AöR, Otto-von-Guericke University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
| | - K Lohfink
- Department of Radiology and Nuclear Medicine, Universitätsklinikum Magdeburg AöR, Otto-von-Guericke University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
| | - M Kandulski
- Department of Nephrology and Hypertension, Diabetes and Endocrinology, Universitätsklinikum Magdeburg AöR, Magdeburg, Germany
| | - A Heller
- Department of Nephrology and Hypertension, Diabetes and Endocrinology, Universitätsklinikum Magdeburg AöR, Magdeburg, Germany
| | - P R Mertens
- Department of Nephrology and Hypertension, Diabetes and Endocrinology, Universitätsklinikum Magdeburg AöR, Magdeburg, Germany
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Burbelko M, Wagner HJ, Gutberlet M, Grothoff M. [Image-guided pain therapy. Sympathicolysis]. Radiologe 2015; 55:462-9. [PMID: 26063075 DOI: 10.1007/s00117-014-2802-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND In the autonomic nerve system most sympathetic neurons synapse peripherally in the ganglia of the sympathetic trunk. A reduction in sympathicotonia by partial elimination of these ganglia is a therapeutic approach that has been used for more than 100 years. In the early 1920s the first attempts at percutaneous sympathicolysis (SL) were carried out. Nowadays, minimally invasive image-guided SL has become an integral part of interventional radiology. Established indications for SL are hyperhidrosis, critical limb ischemia and the complex regional pain syndrome. METHODS The standard imaging guidance modality in SL is computed tomography (CT) which allows the exact placement of the puncture needle in the target area under visualization of the surrounding structures. Ethanol is normally used for chemical lysis, which predominantly eliminates the unmyelinated autonomic axons. In order to visualize the distribution of the ethanol during application, iodine-containing contrast medium is added. RESULTS The sympathetic nervous system (SNS) controls sweat secretion via the efferent neurons; therefore, effective therapy of idiopathic palmar, axillary and plantar hyperhidrosis can be achieved when SL is performed at the corresponding level of the sympathetic trunk. Furthermore, due to the vasomotor innervation of most blood vessels, by reduction of the sympathicotonus an atony of the smooth muscles and therefore vasodilatation occurs, which is used as a palliative therapeutic option in patients with critical limb ischemia. By elimination of the afferent sensory fibers this also results in pain relief. This principle is also used in the SL therapy of the complex regional pain syndrome. CONCLUSION After the introduction of CT guidance, major complications have become rare events. In addition to the usual risks of percutaneous interventions there are, however, a number of specific complications, such as syncope caused by irritation of cardiac sympathetic nerves in thoracic SL and ureteral injury in lumbar SL.
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Affiliation(s)
- M Burbelko
- Institut für Radiologie und Interventionelle Therapie, Vivantes Klinikum im Friedrichshain, Landsberger Allee 49, 10249, Berlin, Deutschland,
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Renal Sympathetic Denervation by CT-scan-Guided Periarterial Ethanol Injection in Sheep. Cardiovasc Intervent Radiol 2015; 38:977-84. [DOI: 10.1007/s00270-015-1109-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 03/15/2015] [Indexed: 01/13/2023]
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Abstract
Hypertension is the most common modifiable risk factor for cardiovascular disease and death, and lowering blood pressure with antihypertensive drugs reduces target organ damage and prevents cardiovascular disease outcomes. Despite a plethora of available treatment options, a substantial portion of the hypertensive population has uncontrolled blood pressure. The unmet need of controlling blood pressure in this population may be addressed, in part, by developing new drugs and devices/procedures to treat hypertension and its comorbidities. In this Compendium Review, we discuss new drugs and interventional treatments that are undergoing preclinical or clinical testing for hypertension treatment. New drug classes, eg, inhibitors of vasopeptidases, aldosterone synthase and soluble epoxide hydrolase, agonists of natriuretic peptide A and vasoactive intestinal peptide receptor 2, and a novel mineralocorticoid receptor antagonist are in phase II/III of development, while inhibitors of aminopeptidase A, dopamine β-hydroxylase, and the intestinal Na
+
/H
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exchanger 3, agonists of components of the angiotensin-converting enzyme 2/angiotensin(1–7)/Mas receptor axis and vaccines directed toward angiotensin II and its type 1 receptor are in phase I or preclinical development. The two main interventional approaches, transcatheter renal denervation and baroreflex activation therapy, are used in clinical practice for severe treatment resistant hypertension in some countries. Renal denervation is also being evaluated for treatment of various comorbidities, eg, chronic heart failure, cardiac arrhythmias and chronic renal failure. Novel interventional approaches in early development include carotid body ablation and arteriovenous fistula placement. Importantly, none of these novel drug or device treatments has been shown to prevent cardiovascular disease outcomes or death in hypertensive patients.
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Affiliation(s)
- Suzanne Oparil
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama (S.O.); and Department of Nephrology and Hypertension, University Hospital of the University Erlangen-Nürnberg, Germany (R.E.S.)
| | - Roland E. Schmieder
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama (S.O.); and Department of Nephrology and Hypertension, University Hospital of the University Erlangen-Nürnberg, Germany (R.E.S.)
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Maliha G, Townsend RR. An Update on Treatment Options for Drug Resistant Hypertension. CURRENT CARDIOVASCULAR RISK REPORTS 2014. [DOI: 10.1007/s12170-014-0394-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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