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Irreversible electroporation

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https://www.readbyqxmd.com/read/29053456/localized-electroporation-with-dielectrophoretic-field-flow-fractionation-towards-removal-of-circulating-tumour-cells-from-human-blood
#1
Steven Kinio, James K Mills
This paper presents the design and experimental performance of a microelectrode-based device to selectively lyse cells in a flow in a microfluidic channel. Localized cell lysis is achieved by utilizing "irreversible electroporation", in which cells are exposed to high magnitude electric pulses. Localized cell lysis in a flow has research applications and may allow for removal of harmful cells such as circulating tumor cells from blood. Due to the dependence of this technique on the magnitude of the applied electric field, lethal electric field regions can be localized in the channel by calibration of the applied voltage...
October 17, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/29051982/irreversible-electroporation-of-pancreatic-adenocarcinoma-a-primer-for-the-radiologist
#2
M Farzan Rashid, Elizabeth M Hecht, Jonathan A Steinman, Michael D Kluger
Irreversible electroporation (IRE) is increasingly used for the ablation of unresectable locally advanced pancreatic adenocarcinoma. Unlike other ablation technologies that cannot be safely used around critical vasculature or ducts for risk of thermal damage, IRE uses high-voltage pulses to disrupt cellular membranes. This causes cell death by apoptosis and inflammation. IRE has been deployed by both open and percutaneous approaches. Generator parameters are the same for both approaches, and settings are pancreas specific...
October 19, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/29031662/percutaneous-treatment-of-hepatocellular-carcinoma-state-of-the-art-and-innovations
#3
REVIEW
Jean-Charles Nault, Olivier Sutter, Pierre Nahon, Nathalie Ganne-Carrié, Olivier Séror
Percutaneous treatment of hepatocellular carcinoma (HCC) encompasses a vast range of techniques, including monopolar radiofrequency ablation (RFA), multibipolar RFA, microwave ablation, cryoablation and irreversible electroporation. RFA is considered to be one of the main curative treatments for HCC of less than 5 cm developing on cirrhosis, together with surgical resection and liver transplantation. However, controversies exist concerning the respective roles of ablation and liver resection for HCC of less than 3 to 5 cm on cirrhosis...
October 12, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29029985/clinical-and-pathological-outcomes-after-irreversible-electroporation-of-the-pancreas-using-two-parallel-plate-electrodes-a-porcine-model
#4
Steffi J E Rombouts, Willemijn P M van Dijck, Maarten W Nijkamp, Tyche C Derksen, Lodewijk A A Brosens, Frederik J H Hoogwater, Maarten S van Leeuwen, Inne H M Borel Rinkes, Richard van Hillegersberg, Fred H Wittkampf, Izaak Q Molenaar
BACKGROUND: Irreversible electroporation (IRE) by inserting needles around the tumor as treatment for locally advanced pancreatic cancer entails several disadvantages, such as incomplete ablation due to field inhomogeneity, technical difficulties in needle placement and a risk of pancreatic fistula development. This experimental study evaluates outcomes of IRE using paddles in a porcine model. METHODS: Six healthy pigs underwent laparotomy and were treated with 2 separate ablations (in head and tail of the pancreas)...
October 10, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28993931/irreversible-electroporation-in-the-eradication-of-rabbit-vx2-cervical-tumors
#5
Wei Chai, Ying Xu, Wenlong Zhang, Zhentong Wei, Jiannan Li, Jian Shi, Xiaomei Luo, Jianying Zeng, Manhua Cui, Lizhi Niu
The aim of this study was to evaluate the effects of irreversible electroporation (IRE) on the eradication of rabbit VX2 cervical tumors. A VX2 cervical cancer model was first made in 20 New Zealand rabbits. IRE ablation was performed for the cervical cancers of 15 rabbits when the diameter of the tumor was about 1.0-1.5 cm. The control group (n = 5) did not receive IRE ablation. The gross pathology, ultrasound, computed tomography, hematoxylin and eosin, terminal deoxynucleotidyl transferase dUTP nick end labeling assay, and proliferating cell nuclear antigen immunohistochemical staining were performed to evaluate the efficacy of IRE on cervical cancer...
October 9, 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28983745/physical-and-chemical-enhancement-of-and-adaptive-resistance-to-irreversible-electroporation-of-pancreatic-cancer
#6
Qi Shao, Feng Liu, Connie Chung, Kianna Elahi-Gedwillo, Paolo P Provenzano, Bruce Forsyth, John C Bischof
Irreversible electroporation (IRE) can be used to treat cancer by electrical pulses, with advantages over traditional thermal approaches. Here we assess for the first time the IRE response of pancreatic cancer, one of the deadliest forms of cancer, both in vitro and in vivo. We demonstrate that both established and primary cancer cell lines can be destroyed by IRE, but with differential susceptibility and thresholds. We further demonstrate in vitro that viability for a given IRE dose can vary with the local chemistry as outcomes were shown to depend on suspending medium and reduction of glucose in the media significantly improved IRE destruction...
October 5, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28952520/uncertainty-quantification-in-irreversible-electroporation-simulations
#7
Nicholas Labarbera
One recent area of cancer research is irreversible electroporation (IRE). Irreversible electroporation is a minimally invasive procedure where needle electrodes are inserted into the body to ablate tumor cells with electricity. The aim of this paper is to investigate how uncertainty in tissue and tumor conductivity propagate into final ablation predictions used for treatment planning. Two dimensional simulations were performed for a circular tumor surrounded by healthy tissue, and electroporated from two monopolar electrodes...
May 6, 2017: Bioengineering
https://www.readbyqxmd.com/read/28941969/case-report-irreversible-electroporation-for-locally-advanced-pancreatic-cancer
#8
Sonia Orcutt, Bela Kis, Mokenge Malafa
INTRODUCTION: For patients with pancreatic adenocarcinoma who are not candidates for surgical resection, long-term survival is poor, even with currently available systemic and radiation therapy options. However, for those with locally advanced disease who do not have distant metastasis, locoregional control of the tumor has the potential to improve long-term outcomes. A newly developed technology, irreversible electroporation, has advantages over traditional thermal ablation with unresectable cancers in this location...
September 1, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28932093/postoperative-inflammation-as-a-possible-cause-of-portal-vein-thrombosis-after-irreversible-electroporation-for-locally-advanced-pancreatic-cancer
#9
Jun-Jun Su, Ming Su, Kai Xu, Peng-Fei Wang, Li Yan, Shi-Chun Lu, Wan-Qing Gu, Yong-Liang Chen
Portal vein thrombosis (PVT) is a rare but serious postoperative complication associated with irreversible electroporation (IRE). We report a case of postoperative PVT in a 54-year-old woman who underwent IRE for locally advanced pancreatic cancer. Drain removal and discharge of the patient from the hospital were scheduled on postoperative day (POD) 7; however, a magnetic resonance imaging scan revealed the presence of PVT. We suspected postoperative inflammation in the pancreas as the main cause of PVT. However, the patient did not undergo any medical treatment because she did not have any clinical symptoms, and she was discharged on POD 8...
August 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28929209/upper-urinary-tract-effects-after-irreversible-electroporation-ire-of-human-localised-renal-cell-carcinoma-rcc-in-the-irene-pilot-phase-2a-ablate-and-resect-study
#10
J J Wendler, M Pech, J Köllermann, B Friebe, S Siedentopf, S Blaschke, D Schindele, M Porsch, D Baumunk, J Jürgens, F Fischbach, J Ricke, M Schostak, M Böhm, U B Liehr
PURPOSE: Irreversible electroporation (IRE) is a new potential ablation modality for small renal masses. Animal experiments have shown preservation of the urine-collecting system (UCS). The purpose of this clinical study was to perform the first evaluation and comparison of IRE's effects on the renal UCS by using urinary cytology, magnetic-resonance imaging, and resection histology in men after IRE of pT1a renal-cell carcinoma (RCC). METHODS: Seven patients with biopsy-proven RCC pT1a cN0cM0 underwent IRE in a phase 2a pilot ablate-and-resect study (IRENE trial)...
September 19, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28927918/the-safety-of-irreversible-electroporation-on-nerves-adjacent-to-treated-tumors
#11
Xiaomei Luo, Zilin Qin, Huimin Tao, Jian Shi, Gang Fang, Zhonghai Li, Xulong Zhou, Jibing Chen, Kecheng Xu, Jianying Zeng, Lizhi Niu
OBJECTIVES: To evaluate the safety of irreversible electroporation (IRE) on the sciatic nerve after IRE ablation of adjacent tumor. METHODS: and analysis In this study, VX2 tumors were implanted adjacent to the sciatic nerves in 26 New Zealand white rabbits. The rabbits were divided into three groups 10 days after implantation, with two treatment groups of ten rabbits each and a control group of six rabbits. In one of the treatment groups (IRE-S group), the rabbits underwent ablation with a single IRE application, and in the other group (IRE-D group) the rabbits underwent two IRE applications...
September 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28924200/controllable-moderate-heating-enhances-the-therapeutic-efficacy-of-irreversible-electroporation-for-pancreatic-cancer
#12
Chelsea M Edelblute, James Hornef, Niculina I Burcus, Thomas Norman, Stephen J Beebe, Karl Schoenbach, Richard Heller, Chunqi Jiang, Siqi Guo
Irreversible electroporation (IRE) as a non-thermal tumor ablation technology has been studied for the treatment of pancreatic carcinoma and has shown a significant survival benefit. We discovered that moderate heating (MH) at 43 °C for 1-2 minutes significantly enhanced ex vivo IRE tumor ablation of Pan02 cells by 5.67-fold at 750 V/cm and by 1.67-fold at 1500 V/cm. This amount of heating alone did not cause cell death. An integrated IRE system with controllable laser heating and tumor impedance monitoring was developed to treat mouse ectopic pancreatic cancer...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28901954/avoiding-nerve-stimulation-in-irreversible-electroporation-a-numerical-modeling-study
#13
Borja Mercadal, Christopher B Arena, Rafael V Davalos, Antoni Ivorra
Electroporation based treatments consist in applying one or multiple high voltage pulses to the tissues to be treated. As an undesired side effect, these pulses cause electrical stimulation of excitable tissues such as nerves and muscles. This increases the complexity of the treatments and may pose a risk to the patient. To minimize electrical stimulation during electroporation based treatments, it has been proposed to replace the commonly used monopolar pulses by bursts of short bipolar pulses. In the present study, we have numerically analyzed the rationale for such approach...
October 4, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28895032/resection-of-locally-advanced-pancreatic-cancer-without-regression-of-arterial-encasement-after-modern-era-neoadjuvant-therapy
#14
Michael D Kluger, M Farzan Rashid, Vilma L Rosario, Beth A Schrope, Jonathan A Steinman, Elizabeth M Hecht, John A Chabot
INTRODUCTION: Modern-era systemic therapy for locally advanced pancreatic adenocarcinoma (LAPC) offers improved survival relative to historical regimens but not necessarily improved radiographic downstaging to allow more patients to undergo resection. The aim of this study was to evaluate the survival, progression, and pathologic outcomes after resection of LAPC that did not regress from > 180 degrees arterial encasement after neoadjuvant therapy. METHODS: Sixty-one LAPC patients were brought to the operating room after neoadjuvant therapy for NCCN-defined unresectable pancreatic cancer between 2012 and 2017...
September 11, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28885207/effect-of-irreversible-electroporation-of%C3%A2-prostate-cancer-on-microcirculation-imaging-findings-in-contrast-enhanced-t1-weighted-3d-mri
#15
L P Beyer, B Pregler, N Verloh, K Brünn, M Haimerl, C Stroszczynski, E M Jung, P Wiggermann
OBJECTIVES: Irreversible electroporation (IRE) is a novel focal ablation technique applicable for treatment of prostate cancer (PCa). We aim to evaluate imaging findings of T1-weighted contrast-enhanced MRI after percutaneous IRE of low-risk PCa. METHODS: A total of 13 male patients underwent IRE of focal low-risk PCa and were included in this analysis. Prostate IRE was conducted using 2-4 electrodes being placed under CT-fluoroscopy guidance. Dynamic contrast-enhanced 3D isotropic fat-saturated T1-weighted MRI (DCE-MRI) was performed 24-72 hours before and 24-72 hours after ablation...
September 4, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28871458/percutaneous-irreversible-electroporation-combined-with-allogeneic-natural-killer-cell-immunotherapy-for-patients-with-unresectable-stage-iii-iv-pancreatic-cancer-a-promising-treatment
#16
Mao Lin, Shuzhen Liang, Xiaohua Wang, Yinqing Liang, Mingjie Zhang, Jibing Chen, Lizhi Niu, Kecheng Xu
PURPOSE: This study was attempted to investigate the safety and clinical efficacy of percutaneous irreversible electroporation combined with allogeneic natural killer cell therapy for treating stage III/IV pancreatic cancer, evaluate median progression-free survival (PFS), and overall survival (OS). METHODS: Between March 2016 and February 2017, we enrolled 67 patients who met the enrollment criteria. According to the latest NCCN Guidelines, the patients were divided into stage III (35 patients, 16 patients received only irreversible electroporation (IRE) and 19 patients received IRE-NK: 8 patients underwent one course NK and 11 patients underwent ≥3 courses) and stage IV (32 patients, 14 patients received only IRE and 18 patients received IRE-NK: 8 patients underwent one course NK and 10 patients underwent ≥3 courses)...
September 4, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28871138/predicting-irreversible-electroporation-induced-tissue-damage-by-means-of-magnetic-resonance-electrical-impedance-tomography
#17
Matej Kranjc, Simona Kranjc, Franci Bajd, Gregor Serša, Igor Serša, Damijan Miklavčič
Irreversible electroporation (IRE) is gaining importance in routine clinical practice for nonthermal ablation of solid tumors. For its success, it is extremely important that the coverage and exposure time of the treated tumor to the electric field is within the specified range. Measurement of electric field distribution during the electroporation treatment can be achieved using magnetic resonance electrical impedance tomography (MREIT). Here, we show improved MREIT-enabled electroporation monitoring of IRE-treated tumors by predicting IRE-ablated tumor areas during IRE of mouse tumors in vivo...
September 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28869200/irreversible-electroporation-and-thermal-ablation-of-tumors-in-the-liver-lung-kidney-and-bone-what-are-the-differences
#18
REVIEW
L G P H Vroomen, E N Petre, F H Cornelis, S B Solomon, G Srimathveeravalli
Focal treatment with radiofrequency, microwave and cryoablation has been increasingly used for the treatment of tumors in patients who cannot undergo surgical resection and in select patients with early stage or oligometastatic disease. Each of these ablation modalities has a unique working principle and biophysics underlying the ablative effect, which largely determines the clinical indication for its application. Irreversible electroporation, a relatively new ablation technique with a predominantly nonthermal cell killing mechanism has emerged as an alternative treatment technique for tumors that are contraindicated for thermal ablation because of safety or efficacy considerations...
September 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28864693/ablation-with-irreversible-electroporation-in-patients-with-advanced-perihilar-cholangiocarcinoma-alpaca-a-multicentre-phase-i-ii-feasibility-study-protocol
#19
Robert J S Coelen, Jantien A Vogel, Laurien G P H Vroomen, Eva Roos, Olivier R C Busch, Otto M van Delden, Foke van Delft, Michal Heger, Jeanin E van Hooft, Geert Kazemier, Heinz-Josef Klümpen, Krijn P van Lienden, Erik A J Rauws, Hester J Scheffer, Henk M Verheul, Jan de Vries, Johanna W Wilmink, Barbara M Zonderhuis, Marc G Besselink, Thomas M van Gulik, Martijn R Meijerink
INTRODUCTION: The majority of patients with perihilar cholangiocarcinoma (PHC) has locally advanced disease or distant lymph node metastases on presentation or exploratory laparotomy, which makes them not eligible for resection. As the prognosis of patients with locally advanced PHC or lymph node metastases in the palliative setting is significantly better compared with patients with organ metastases, ablative therapies may be beneficial. Unfortunately, current ablative options are limited...
September 1, 2017: BMJ Open
https://www.readbyqxmd.com/read/28834167/feasibility-and-safety-of-focal-irreversible-electroporation-as-salvage-treatment-for-localized-radio-recurrent-prostate-cancer
#20
Matthijs J Scheltema, Willemien van den Bos, Amila R Siriwardana, Anton M F Kalsbeek, James E Thompson, Francis Ting, Maret Böhm, Anne-Maree Haynes, Ron Shnier, Warick Delprado, Phillip D Stricker
OBJECTIVES: To evaluate the feasibility, safety, early quality of life (QoL) and oncological outcomes of salvage focal irreversible electroporation (IRE) for radio-recurrent prostate cancer (PCa). PATIENTS AND METHODS: Patients with localized, radio-recurrent PCa without evidence of metastatic or nodal disease were offered focal IRE following the consensus guidelines. Patients with a minimum follow-up of 6 months were eligible for analysis. Adverse events were monitored using the NCI Common Terminology Criteria for Adverse Events (CTCAE version 4...
August 21, 2017: BJU International
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