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Ajda Prevc, Martina Niksic Zakelj, Simona Kranjc, Maja Cemazar, Janez Scancar, Tina Kosjek, Primoz Strojan, Gregor Sersa
Human papillomavirus (HPV) is an important etiological factor in head and neck squamous cell carcinomas (SCCs). Standard treatment of HPV-positive tumors with platinum-based radio(chemo)therapy results in a better outcome than in HPV-negative tumors. Electrochemotherapy is becoming an increasingly recognized mode of treatment in different cancers; thus, its use in the management of head and neck SCC is of considerable interest. However, response to electrochemotherapy according to HPV status of the tumors has not been evaluated yet...
June 6, 2018: Bioelectrochemistry
Anna M Perrone, Andrea Galuppi, Giulia Borghese, Barbara Corti, Martina Ferioli, Anna N Della Gatta, Alessandro Bovicelli, Alessio G Morganti, Pierandrea De Iaco
BACKGROUND AND OBJECTIVES: Previous studies showed a local tumor control of 80% in patients with relapsed squamous cell vulvar cancer (V-SCC) treated with electrochemotherapy. These results encouraged electrochemotherapy use as neo-adjuvant treatment in V-SCC. The objective of this study was to evaluate the effectiveness of electrochemotherapy in reducing tumor burden in V-SCC. METHODS: Patients with histological diagnosis of primary V-SCC eligible for surgery were enrolled...
June 7, 2018: Journal of Surgical Oncology
Charlotte Egeland, Lene Baeksgaard, Helle Hjorth Johannesen, Johan Löfgren, Christina Caroline Plaschke, Lars Bo Svendsen, Julie Gehl, Michael Patrick Achiam
Background and study aims:  Esophageal cancer is on the rise in the western world and the disease has a poor 5-year survival prognosis below 20 %. Electrochemotherapy is a treatment where a chemotherapeutic drug is combined with locally applied electrical pulses, in order to increase the drug's cytotoxicity in malignant cells. This study presents the first results with electrochemotherapy treatment in esophageal cancer. Patients and methods:  In this first-in-human trial, six patients with advanced esophageal cancer were treated with electrochemotherapy using intravenous bleomycin...
June 2018: Endoscopy International Open
Olga Michel, Dawid Przystupski, Jolanta Saczko, Anna Szewczyk, Natalia Niedzielska, Joanna Rossowska, Julita Kulbacka
Until recently, green tea polyphenols were considered strong antioxidants. However, the latest reports have revealed that bioflavonoids can play a multiple role in anticancer therapy, including the inhibition of cell proliferation and generation of the oxidative stress in a dose-dependent manner. The presented research was designed to examine the potential of the green tea (±)-catechin as a reinforcement of the electrochemotherapy (ECT) with cisplatin in pancreatic cancer in vitro. The study was performed on two cell lines of the pancreatic ductal adenocarcinoma (PDA) - parental EPP85-181P and multidrug-resistant EPP85-181RNOV...
May 22, 2018: Acta Biochimica Polonica
Helena Cindrič, Bor Kos, Giuseppe Tedesco, Matteo Cadossi, Alessandro Gasbarrini, Damijan Miklavčič
Vertebral column is the most frequent site for bone metastases. It has been demonstrated in previous studies that bone metastases can be efficiently treated by electrochemotherapy. We developed a novel approach to treat spinal metastases, that is, transpedicular approach that combines electrochemotherapy with already established technologies for insertion of fixation screws in spinal surgery. In the transpedicular approach, needle electrodes are inserted into the vertebral body through pedicles and placed around the tumor...
January 1, 2018: Technology in Cancer Research & Treatment
Olga Michel, Julita Kulbacka, Jolanta Saczko, Justyna Mączyńska, Piotr Błasiak, Joanna Rossowska, Adam Rzechonek
Despite the rapid progression of cancer pharmacotherapy, the high drug resistance of pancreatic ductal adenocarcinoma (PDA) makes it one of the most lethal malignancies. Therefore, there are high expectations associated with experimental therapies, such as electrochemotherapy (ECT). This technique involves the application of short electric pulses to induce transitional permeabilization of the cellular membrane, thus enhancing drug molecules influx. The aim of the study was to investigate the influence of electroporation with cisplatin (CisEP) on the primary culture of human PDA cells from lung metastases-their survival and stress response...
2018: BioMed Research International
Joanna Weżgowiec, Julita Kulbacka, Jolanta Saczko, Joanna Rossowska, Grzegorz Chodaczek, Małgorzata Kotulska
Electrochemotherapy became one of the therapeutic protocols successfully used in oncology. However, biological effects occurring in cells, especially those which are drug resistant, have not been studied thoroughly. This study presents response of wild and drug resistant breast cancer cells to classical photodynamic therapy with Photofrin or experimental photodynamic therapy with cyanine IR-775, combined with electroporation. Photodynamic reaction or electroporation alone had no cytotoxic effect, but their combination significantly disturbed cellular functions...
April 19, 2018: Bioelectrochemistry
Mateusz Wichtowski, Dawid Murawa
Electrochemotherapy is a new therapeutic option for patients with locally spread melanoma. It is based on the phenomenon of reversible electroporation, i.e. a transient increase in permeability of cell membranes under the influence of an appropriately modulated electric field. This allows multiplication of toxicity of a cytostatic agent entering the tumour cell. It is highly effective, especially in the palliative treatment of cancers located in the integument of the human body (skin and subcutaneous tissue)...
2018: Contemporary Oncology Współczesna Onkologia
Louise Wichmann Matthiessen, Mohammed Keshtgar, Pietro Curatolo, Christian Kunte, Eva-Maria Grischke, Joy Odili, Tobian Muir, David Mowatt, James P Clover, Se Hwang Liew, Karin Dahlstroem, Jackie Newby, Valerie Letulé, Eva Stauss, Alison Humphreys, Shramana Banerjee, Annette Klein, Roberta Rotunno, Francesca de Terlizzi, Julie Gehl
BACKGROUND: Cutaneous recurrence from breast cancer can pose a clinical challenge. It might be the only disease site, or could be part of disseminated disease, and often profoundly affects quality of life. Electrochemotherapy is a palliative treatment using electric pulses to locally permeabilize tumor cells and thereby significantly increase bleomycin cytotoxicity. Collaborating with the International Network for Sharing Practice on ElectroChemoTherapy (INSPECT), we consecutively and prospectively accrued data on patients treated with electrochemotherapy for cutaneous metastases from breast cancer...
March 14, 2018: Clinical Breast Cancer
Janja Dermol-Černe, Damijan Miklavčič, Matej Reberšek, Primož Mekuč, Sylvia M Bardet, Ryan Burke, Delia Arnaud-Cormos, Philippe Leveque, Rodney O'Connor
In electroporation-based medical treatments, excitable tissues are treated, either intentionally (irreversible electroporation of brain cancer, gene electrotransfer or ablation of the heart muscle, gene electrotransfer of skeletal muscles), or unintentionally (excitable tissues near the target area). We investigated how excitable and non-excitable cells respond to electric pulses, and if electroporation could be an effective treatment of the tumours of the central nervous system. For three non-excitable and one excitable cell line, we determined a strength-duration curve for a single pulse of 10ns-10ms...
August 2018: Bioelectrochemistry
Julie Gehl, Gregor Sersa, Louise Wichmann Matthiessen, Tobian Muir, Declan Soden, Antonio Occhini, Pietro Quaglino, Pietro Curatolo, Luca G Campana, Christian Kunte, A James P Clover, Giulia Bertino, Victor Farricha, Joy Odili, Karin Dahlstrom, Marco Benazzo, Lluis M Mir
Electrochemotherapy is now in routine clinical use to treat cutaneous metastases of any histology, and is listed in national and international guidelines for cutaneous metastases and primary skin cancer. Electrochemotherapy is used by dermatologists, surgeons, and oncologists, and for different degrees and manifestations of metastases to skin and primary skin tumours not amenable to surgery. This treatment utilises electric pulses to permeabilize cell membranes in tumours, thus allowing a dramatic increase of the cytotoxicity of anti-cancer agents...
March 25, 2018: Acta Oncologica
M Shahzad Ali, Kheshwant S Gill, Giuseppe Saglio, Daniela Cilloni, Declan M Soden, Patrick F Forde
Pancreatic cancer is one of the most lethal cancers with high metastatic potential and strong chemoresistance. The capability of a tumor to grow and propagate is dependent on a small subset of cells within a tumor, termed cancer stem cells. Cancer stem cells exhibit great tumorigenicity and are closely correlated with drug resistance and tumor recurrence. The aim of our study was to illustrate electrochemotherapy as an effective treatment for pancreatic cancer along with the expression change in stemness genes (Nanog, Sox2 and Oct3/4) in pancreatic cancer cells post electrochemotherapy with bleomycin, cisplatin and oxaliplatin...
March 15, 2018: Bioelectrochemistry
Ales Groselj, Simona Kranjc, Masa Bosnjak, Mojca Krzan, Tina Kosjek, Ajda Prevc, Maja Cemazar, Gregor Sersa
Pre-clinical and clinical data indicate differences in the responses of melanoma and carcinoma tumours to electrochemotherapy. The purpose of this study was to investigate the origin of this difference, whether it is due to the intrinsic difference in tumour cell susceptibility to the chemotherapeutic, or due to the tumour micro-environment. For this purpose, we performed a pre-clinical study in B16F1 melanoma and TS/A carcinoma tumours in mice, in which the antitumour effectiveness of electrochemotherapy with bleomycin, the intrinsic sensitivity of tumour cells in vitro, the pharmacokinetics of bleomycin in plasma and tumours, and the vascularization of tumours in vivo were evaluated...
March 24, 2018: Basic & Clinical Pharmacology & Toxicology
Alessia Ongaro, Luca Giovanni Campana, Monica De Mattei, Paolo Di Barba, Fabrizio Dughiero, Michele Forzan, Maria Evelina Mognaschi, Agnese Pellati, Carlo Riccardo Rossi, Clara Bernardello, Elisabetta Sieni
Electrochemotherapy is an emerging local treatment for the management of superficial tumors and, among these, also chest wall recurrences from breast cancer. Generally, the treatment of this peculiar type of tumor requires the coverage of large skin areas. In these cases, electrochemotherapy treatment by means of standard small size needle electrodes (an array of 0.73 cm spaced needles, which covers an area of 1.5 cm2 ) is time-consuming and can allow an inhomogeneous coverage of the target area. We have previously designed grid devices suitable for treating an area ranging from 12 to 200 cm2 ...
January 1, 2018: Technology in Cancer Research & Treatment
M Fiorentzis, H Kalirai, P Katopodis, B Seitz, A Viestenz, S E Coupland
Electrochemotherapy (ECT) enhances responsiveness to cytotoxic drugs in numerous cell lines in vitro. Clinically ECT is widely applied for skin tumor ablation and has shown efficacy in treating non-resectable colorectal liver metastases. There is limited experience of ECT for ocular tumor therapy. We investigated the cytotoxic effect of bleomycin and cisplatin in combination with electroporation on chemoresistant human uveal melanoma (UM) cell lines in vitro. Four UM cell lines (Mel 270, 92-1, OMM-1, OMM-2...
2018: Neoplasma
Jozko Racnik, Tanja Svara, Marko Zadravec, Mitja Gombac, Maja Cemazar, Gregor Sersa, Natasa Tozon
Background: Mast cell tumour, sebaceous gland adenoma, and less common squamous papilloma are skin tumours in ferrets ( Mustela putorius furo ), and early excisional surgery is usually the treatment of choice. The aim of our study was to investigate the effectiveness of electrochemotherapy (ECT), a new, minimally invasive non-surgical method, as first treatment option of different types of ferret skin tumours located on surgically difficult sites. Materials and methods: A 5-year-old castrated male ferret with two cutaneous masses, presenting 4 months apart and a 7-year-old spayed female ferret with two cutaneous masses, that appeared simultaneously on two locations are presented...
March 2018: Radiology and Oncology
N Al-Hadithy, Alexandra Dehnel, Alexander George, Robert Kisiel, Craig Lunt, Christopher Stone
Metastatic spread of malignant tumours to skin is a well described phenomenon with incidence of approximately 0.7-9% of all metastases depending on histological type of primary cancer. Electrochemotherapy (ECT) is an efficient local tumour ablation modality that has proven clinical efficacy in the treatment of various types of tumours metastasis to skin. Aims of this study are to evaluate the activity, toxicity, and feasibility of treating patients with electrochemotherapy (ECT); their clinical outcomes and patient report outcome measures...
April 2018: International Journal of Surgery
Mateusz Wichtowski, Dawid Murawa, Katarzyna Kulcenty, Karolina Zaleska
Breast cancer is the most common cause of skin metastases in women. The probability of their occurrence ranges from about 5% in the entire population to as much as 30% in the late stages of the disease. Although rarely life-threatening, they have a major impact on the quality of life of patients with this diagnosis, being the cause of pain, effusion, ulceration, infection, and psychological discomfort. Available methods of treatment, both local and systemic, often fail to provide adequate control of the disease...
December 2017: Breast Care
Liam F Tremble, Morgan A O'Brien, Patrick F Forde, Declan M Soden
Electrochemotherapy is an evolving therapy which has recently been shown to induce an immunogenic form of cell death. It is hypothesized that the immunogenic cell death induced by electrochemotherapy may compliment the responses seen with anti-cancer immunotherapies. We therefore examined the effect of electrochemotherapy in combination with ICOS activation, which promotes the activity of previously activated T cells. In comparison to either monotherapy which resulted in no curative outcomes in any model, in a CT26 primary tumour 50% of mice were cured, with 100% of cured mice surviving tumour rechallenge...
April 28, 2018: Cancer Letters
Mihajlo Djokic, Maja Cemazar, Peter Popovic, Bor Kos, Rok Dezman, Masa Bosnjak, Martina Niksic Zakelj, Damijan Miklavcic, Stojan Potrc, Borut Stabuc, Ales Tomazic, Gregor Sersa, Blaz Trotovsek
BACKGROUND AND OBJECTIVES: Electrochemotherapy provides non-thermal ablation of cutaneous as well as deep seated tumors. Based on positive results of the treatment of colorectal liver metastases, we conducted a prospective pilot study on hepatocellular carcinomas with the aim of testing the feasibility, safety and effectiveness of electrochemotherapy. PATIENTS AND METHODS: Electrochemotherapy with bleomycin was performed on 17 hepatocellular carcinomas in 10 patients using a previously established protocol...
May 2018: European Journal of Surgical Oncology
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