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Irreversible electroporation

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https://www.readbyqxmd.com/read/28215455/lung-ablation-best-practice-results-response-assessment-role-alongside-other-ablative-therapies
#1
REVIEW
T de Baere, L Tselikas, G Gravel, F Deschamps
Today, in addition to surgery, other local therapies are available for patients with small-size non-small-cell lung cancer (NSCLC) and oligometastatic disease from various cancers. Local therapies include stereotactic ablation radiotherapy (SABR) and thermal ablative therapies through percutaneously inserted applicators. Although radiofrequency ablation (RFA) has been explored in series with several hundreds of patients with pulmonary tumours, investigation of the potential of other ablation technologies including microwave ablation, cryoablation, and irreversible electroporation is ongoing...
February 16, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28209559/irreversible-electroporation-for-the-ablation-of-renal-cell-carcinoma-a-prospective-human-in-vivo-study-protocol-ideal-phase-2b
#2
Mara Buijs, Krijn P van Lienden, Peter Gk Wagstaff, Matthijs Jv Scheltema, Daniel M de Bruin, Patricia J Zondervan, Otto M van Delden, Ton G van Leeuwen, Jean Jmch de la Rosette, M Pilar Laguna
BACKGROUND: Irreversible electroporation (IRE) is an emerging technique delivering electrical pulses to ablate tissue, with the theoretical advantage to overcome the main shortcomings of conventional thermal ablation. Recent short-term research showed that IRE for the ablation of renal masses is a safe and feasible treatment option. In an ablate and resect design, histopathological analysis 4 weeks after radical nephrectomy demonstrated that IRE-targeted renal tumors were completely covered by ablation zone...
February 16, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28187107/irreversible-electroporation-for-locally-advanced-pancreatic-cancer-where-do-we-stand-in-2017
#3
Jean Pierre Tasu, Guillaume Vesselle, Guillaume Herpe, Jean Pierre Richer, Samy Boucecbi, Stéphane Vélasco, Bertrand Debeane, Michel Carretier, David Tougeron
Pancreatic adenocarcinoma has a very poor prognosis. Complete surgical resection remains the only current curative treatment. Locally advanced pancreatic cancers are considered as unresectable because of involvement of celiac and/or mesenteric vessels. Irreversible electroporation has recently been introduced to induce permanent cell death by apoptosis. Irreversible electroporation is a nonthermal cell-destruction technique that was claimed to allow destruction of cancerous cells with less damage to surrounding supporting connective tissues with collagenic structure (such as nearby blood vessels, biliary ducts, and nerves) than other types of treatment...
March 2017: Pancreas
https://www.readbyqxmd.com/read/28185295/irreversible-electroporation-for-the-ablation-of-pancreatic-malignancies-a-patient-specific-methodology
#4
Eduardo L Latouche, Michael B Sano, Melvin F Lorenzo, Rafael V Davalos, Robert C G Martin
BACKGROUND AND OBJECTIVES: Irreversible Electroporation (IRE) is a focal ablation technique highly attractive to surgical oncologists due to its non-thermal nature that allows for eradication of unresectable tumors in a minimally invasive procedure. In this study, our group sought to address the challenge of predicting the ablation volume with IRE for pancreatic procedures. METHODS: In compliance with HIPAA and hospital IRB approval, we established a pre-treatment planning methodology for IRE procedures in pancreas, which optimized treatment protocols for individual cases of locally advanced pancreatic cancer (LAPC)...
February 10, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28177652/irreversible-electroporation-defining-the-mri-appearance-of-the-ablation-zone-with-histopathologic-correlation-in-a-porcine-liver-model
#5
Ely R Felker, Isabel Dregely, Dong Jin Chung, Kyunghyun Sung, Ferdnand C Osuagwu, Charles Lassman, James Sayre, Holden Wu, David S Lu
OBJECTIVE: The purpose of this study is to evaluate the MRI appearance of the irreversible electroporation zone in porcine liver, with histopathologic correlation. MATERIALS AND METHODS: Nine irreversible electroporation ablations were percutaneously created in two Yorkshire pigs. Irreversible electroporation was performed with a bipolar 16-gauge electrode with 3-cm exposure tip and fixed 8-mm interpolar distance. Gadoxetate disodium-enhanced 3-T MRI was performed 50 hours after irreversible electroporation...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28162818/efficacy-of-preoperative-immunonutrition-in-locally-advanced-pancreatic-cancer-undergoing-irreversible-electroporation-ire
#6
R C G Martin, S Agle, M Schlegel, T Hayat, C R Scoggins, K M McMasters, P Philips
BACKGROUND: Improved preoperative immunonutrition has been shown to decrease the length of stay (LOS) and complications among patients undergoing elective gastrointestinal cancer surgeries. The purpose of this study was to determine whether preoperative immunonutrition supplementation decreases postoperative LOS, infectious complications, and morbidity in patients undergoing irreversible electroporation (IRE) surgery for locally advanced pancreatic cancer (LAPC). METHODS: At a regional hepatopancreatobiliary referral center within an academic medical center 71 patients receiving IRE treatment of LAPC were included in the study...
January 19, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28161827/concurrent-chemotherapy-alone-versus-irreversible-electroporation-followed-by-chemotherapy-on-survival-in-patients-with-locally-advanced-pancreatic-cancer
#7
Giuseppe Belfiore, Maria Paola Belfiore, Alfonso Reginelli, Raffaella Capasso, Francesco Romano, Giovanni Pietro Ianniello, Salvatore Cappabianca, Luca Brunese
Pancreatic adenocarcinoma is one of the most fatal cancers, characterized by aggressive tumor growth and a short patient survival time between diagnosis and death. Safe and effective treatment options are limited, especially in cases when surgical resection is not possible. Irreversible electroporation (IRE) is a non-thermal ablation technique recently introduced in the treatment of pancreatic cancer. From 2013 to 2016, 29 cases of locally advanced pancreatic cancer (LAPC) treated with IRE were retrospectively analyzed and the median overall survival (OS) rates were compared with patients with the same diagnosis who received standard chemotherapy as reported in the literature...
March 2017: Medical Oncology
https://www.readbyqxmd.com/read/28147680/miniaturized-two-stack-blumlein-pulser-with-a-variable-repetition-rate-for-non-thermal-irreversible-electroporation-experiments
#8
Sun-Hong Min, Ohjoon Kwon, Matlabjon Sattorov, In-Keun Baek, Seontae Kim, Jin-Young Jeong, Dongpyo Hong, Seunghyuk Park, Gun-Sik Park
Non-thermal irreversible electroporation (NTIRE) to avoid thermal damage to cells during intense DC ns pulsed electric fields (nsPEFs) is a recent modality for medical applications. This mechanism, related to bioelectrical dynamics of the cell, is linked to the effect of a DC electric field and a threshold effect with an electrically stimulated membrane for the charge distribution in the cell. To create the NTIRE condition, the pulse width of the nsPEF should be shorter than the charging time constant of the membrane related to the cell radius, membrane capacitance, cytoplasm resistivity, and medium resistivity...
January 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28130578/-liver-metastases-of-colorectal-cancer
#9
R-T Hoffmann
Liver metastases are the most common cause of death in colorectal cancer patients. Nowadays, complete resection is considered to be the only curative treatment but only approximately 25% of patients are suitable candidates for surgery; therefore, many different interventional oncology techniques have been developed in recent years for the treatment of secondary liver metastases. The aim of interventional oncological procedures is either to provide a potentially curative treatment option for locally limited metastases with local ablative techniques, to enable nonresectable tumors to become accessible to surgical or local ablative techniques using transarterial procedures or to achieve improved survival in a palliative setting...
February 2017: Der Radiologe
https://www.readbyqxmd.com/read/28123061/detection-of-vulnerable-neurons-damaged-by-environmental-insults-in-utero
#10
Masaaki Torii, Masanori Sasaki, Yu-Wen Chang, Seiji Ishii, Stephen G Waxman, Jeffery D Kocsis, Pasko Rakic, Kazue Hashimoto-Torii
Development of prognostic biomarkers for the detection of prenatally damaged neurons before manifestations of postnatal disorders is an essential step for prevention and treatment of susceptible individuals. We have developed a versatile fluorescence reporter system in mice enabling detection of Heat Shock Factor 1 activation in response to prenatal cellular damage caused by exposure to various harmful chemical or physical agents. Using an intrautero electroporation-mediated reporter assay and transgenic reporter mice, we are able to identify neurons that survive prenatal exposure to harmful agents but remain vulnerable in postnatal life...
January 25, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28109674/single-center-nonrandomized-clinical-trial-to-assess-the-safety-and-efficacy-of-irreversible-electroporation-ire-ablation-of-liver-tumors-in-humans-short-to-mid-term-results
#11
P Frühling, A Nilsson, F Duraj, U Haglund, A Norén
INTRODUCTION: A single-center nonrandomized clinical trial was performed to assess the safety and efficacy of IRE ablation of liver tumors in humans. METHODS: 38 malignant liver tumors on 30 patients were treated with IRE between September 2011 and September 2014. Treatment was with curative intent, and the diagnoses were colorectal cancer with liver metastases (CRLM) (n = 23), hepatocellular carcinoma (HCC) (n = 8) and other metastasis (n = 7). Patients were selected when surgery, radiofrequency ablation (RFA) or microwave ablation (MWA) was not an option, and when they met inclusion criteria (tumor size < 3 cm, 1-2 tumors)...
January 11, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28106146/asymmetric-waveforms-decrease-lethal-thresholds-in-high-frequency-irreversible-electroporation-therapies
#12
Michael B Sano, Richard E Fan, Lei Xing
Irreversible electroporation (IRE) is a promising non-thermal treatment for inoperable tumors which uses short (50-100 μs) high voltage monopolar pulses to disrupt the membranes of cells within a well-defined volume. Challenges with IRE include complex treatment planning and the induction of intense muscle contractions. High frequency IRE (H-FIRE) uses bursts of ultrashort (0.25-5 μs) alternating polarity pulses to produce more predictable ablations and alleviate muscle contractions associated with IRE...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28093955/anatomically-realistic-simulations-of-liver-ablation-by-irreversible-electroporation
#13
Radwan Qasrawi, Louis Silve, Fernando Burdío, Ziad Abdeen, Antoni Ivorra
Irreversible electroporation is a novel tissue ablation technique which entails delivering intense electrical pulses to target tissue, hence producing fatal defects in the cell membrane. The present study numerically analyzes the potential impact of liver blood vessels on ablation by irreversible electroporation because of their influence on the electric field distribution. An anatomically realistic computer model of the liver and its vasculature within an abdominal section was employed, and blood vessels down to 0...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28078482/irreversible-electroporation-as-treatment-of-locally-advanced-and-as-margin-accentuation-in-borderline-resectable-pancreatic-adenocarcinoma
#14
P Marsanic, A Mellano, A Sottile, M De Simone
In recent years, many local ablation technologies based on thermal damage have been used in the treatment of locally advanced pancreatic carcinoma (LAPC) and borderline resectable pancreatic carcinoma (BLRPC). However, they are associated with major complications because of possible vascular and ductal damage. Irreversible electroporation (IRE) is a nonthermal ablation technology that seems safe near vital vascular and ductal structures. IRE could be used as exclusive treatment of LAPC (en situ to IRE) after induction chemotherapy In BLRPC, surgery is not really radical in 6% of patients (microscopic residual) and local recurrences occur in 11-42% of apparent radical resections...
January 11, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28065834/nanosecond-pulsed-electric-fields-trigger-cell-differentiation-in-chlamydomonas-reinhardtii
#15
Fan Bai, Christian Gusbeth, Wolfgang Frey, Peter Nick
Nanosecond pulsed electric fields (nsPEFs) have great potential for biotechnological and medical applications. However, the biological mechanisms causing the cellular responses are still far from understood. We used the unicellular green algae Chlamydomonas reinhardtii as experimental model to dissect the immediate consequences of electroporation from the developmental cellular responses evoked by nsPEFs. We observe that nsPEFs induce a short-term permeabilization of the membrane, accompanied by swelling and oxidative burst...
January 6, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28052102/irreversible-electroporation-of-the-pancreas-using-parallel-plate-electrodes-in-a-porcine-model-a-feasibility-study
#16
Steffi J E Rombouts, Maarten W Nijkamp, Willemijn P M van Dijck, Lodewijk A A Brosens, Maurits Konings, R van Hillegersberg, Inne H M Borel Rinkes, Jeroen Hagendoorn, Fred H Wittkampf, I Quintus Molenaar
BACKGROUND: Irreversible electroporation (IRE) with needle electrodes is being explored as treatment option in locally advanced pancreatic cancer. Several studies have shown promising results with IRE needles, positioned around the tumor to achieve tumor ablation. Disadvantages are the technical difficulties for needle placement, the time needed to achieve tumor ablation, the risk of needle track seeding and most important the possible occurrence of postoperative pancreatic fistula via the needle tracks...
2017: PloS One
https://www.readbyqxmd.com/read/28033149/partial-gland-ablation-in-the-management-of-prostate-cancer-a-review
#17
Timothy D McClure, Daniel J A Margolis, Jim C Hu
PURPOSE OF REVIEW: The index lesion theory has created a strong interest in partial gland ablation for men with prostate cancer. By only treating the focus of clinically significant disease and avoidance of surrounding periprostatic tissue, one may provide adequate oncologic control with minimal side effects. Accurate identification of the index lesion and effective ablation are critical for satisfactory oncologic outcomes. Herein, we review key ablative techniques used in partial gland ablation...
March 2017: Current Opinion in Urology
https://www.readbyqxmd.com/read/28029459/real-time-monitoring-of-cytotoxic-effects-of-electroporation-on-breast-and-colon-cancer-cell-lines
#18
Danijela M Cvetković, Marko N Živanović, Milena G Milutinović, Tijana R Djukić, Miloš D Radović, Aleksandar M Cvetković, Nenad D Filipović, Nebojša D Zdravković
PURPOSE: To study the effects of electroporation on different cell lines. MATERIAL: The effects of electroporation on human breast cancer (MDA-MB-231), human colon cancer (SW-480 and HCT-116), human fibroblast cell line (MRC-5), primary human aortic smooth muscle cells (hAoSMC) and human umbilical vein endothelial cells (HUVEC) were studied. Real-time technology was used for cell viability monitoring. Acridine orange/ethidium bromide assay was applied for cell death type determination...
October 22, 2016: Bioelectrochemistry
https://www.readbyqxmd.com/read/28009979/ablation-of-hepatic-malignant-tumors-with-irreversible-electroporation-a-systematic-review-and-meta-analysis-of-outcomes
#19
Guo Tian, Qiyu Zhao, Fen Chen, Tian'an Jiang, Weilin Wang
BACKGROUND: Irreversible electroporation (IRE) ablation is a new technique that is used to eliminate malignant tumors through nonthermal approaches. OBJECTIVE: The purpose of this review was to evaluate the efficiency of IRE for hepatic malignant tumors. METHODS: A systematic search was performed from PubMed, Embase, Web of science, Scopus and other potential literatures from references in relevant articles July 26th, 2016. Overall estimates of pooled standard mean difference (SMD) with 95% confidence interval (CI) were calculated for the changes of the pre- and post-IRE longest diameter, alkaline phosphatase (ALP), aspartate aminotransferase (AST) and serum total bilirubin levels...
January 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28005508/irreversible-electroporation-disappearance-of-observable-changes-at-imaging-does-not-always-imply-complete-reversibility-of-the-underlying-causal-tissue-changes
#20
Olivier Seror, Clair Poignard, Olivier Gallinato, Rafik Ourabia, Olivier Sutter
No abstract text is available yet for this article.
January 2017: Radiology
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