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Casciati A, Taddei AR, Rampazzo E, Persano L, Viola G, Cani A, Bresolin S, Cesi V, Antonelli F, Mancuso M, Merla C, Tanori M. Involvement of Mitochondria in the Selective Response to Microsecond Pulsed Electric Fields on Healthy and Cancer Stem Cells in the Brain. Int J Mol Sci 2024; 25:2233. [PMID: 38396911 PMCID: PMC10889160 DOI: 10.3390/ijms25042233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/02/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
In the last few years, pulsed electric fields have emerged as promising clinical tools for tumor treatments. This study highlights the distinct impact of a specific pulsed electric field protocol, PEF-5 (0.3 MV/m, 40 μs, 5 pulses), on astrocytes (NHA) and medulloblastoma (D283) and glioblastoma (U87 NS) cancer stem-like cells (CSCs). We pursued this goal by performing ultrastructural analyses corroborated by molecular/omics approaches to understand the vulnerability or resistance mechanisms triggered by PEF-5 exposure in the different cell types. Electron microscopic analyses showed that, independently of exposed cells, the main targets of PEF-5 were the cell membrane and the cytoskeleton, causing membrane filopodium-like protrusion disappearance on the cell surface, here observed for the first time, accompanied by rapid cell swelling. PEF-5 induced different modifications in cell mitochondria. A complete mitochondrial dysfunction was demonstrated in D283, while a mild or negligible perturbation was observed in mitochondria of U87 NS cells and NHAs, respectively, not sufficient to impair their cell functions. Altogether, these results suggest the possibility of using PEF-based technology as a novel strategy to target selectively mitochondria of brain CSCs, preserving healthy cells.
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Affiliation(s)
- Arianna Casciati
- Division of Health Protection Technologies, Italian National Agency for Energy New Technologies and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123 Rome, Italy; (A.C.); (V.C.); (F.A.); (M.M.)
| | - Anna Rita Taddei
- Great Equipment Center-Section of Electron Microscopy, University of Tuscia, Largo dell’Università snc, 01100 Viterbo, Italy;
| | - Elena Rampazzo
- Department of Women’s and Children’s Health (SDB), University of Padova, Via Giustiniani 3, 35128 Padova, Italy; (E.R.); (L.P.); (G.V.); (A.C.); (S.B.)
- Pediatric Research Institute (IRP), Corso Stati Uniti 4, 35127 Padova, Italy
| | - Luca Persano
- Department of Women’s and Children’s Health (SDB), University of Padova, Via Giustiniani 3, 35128 Padova, Italy; (E.R.); (L.P.); (G.V.); (A.C.); (S.B.)
- Pediatric Research Institute (IRP), Corso Stati Uniti 4, 35127 Padova, Italy
| | - Giampietro Viola
- Department of Women’s and Children’s Health (SDB), University of Padova, Via Giustiniani 3, 35128 Padova, Italy; (E.R.); (L.P.); (G.V.); (A.C.); (S.B.)
- Pediatric Research Institute (IRP), Corso Stati Uniti 4, 35127 Padova, Italy
| | - Alice Cani
- Department of Women’s and Children’s Health (SDB), University of Padova, Via Giustiniani 3, 35128 Padova, Italy; (E.R.); (L.P.); (G.V.); (A.C.); (S.B.)
- Pediatric Research Institute (IRP), Corso Stati Uniti 4, 35127 Padova, Italy
| | - Silvia Bresolin
- Department of Women’s and Children’s Health (SDB), University of Padova, Via Giustiniani 3, 35128 Padova, Italy; (E.R.); (L.P.); (G.V.); (A.C.); (S.B.)
- Pediatric Research Institute (IRP), Corso Stati Uniti 4, 35127 Padova, Italy
| | - Vincenzo Cesi
- Division of Health Protection Technologies, Italian National Agency for Energy New Technologies and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123 Rome, Italy; (A.C.); (V.C.); (F.A.); (M.M.)
| | - Francesca Antonelli
- Division of Health Protection Technologies, Italian National Agency for Energy New Technologies and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123 Rome, Italy; (A.C.); (V.C.); (F.A.); (M.M.)
| | - Mariateresa Mancuso
- Division of Health Protection Technologies, Italian National Agency for Energy New Technologies and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123 Rome, Italy; (A.C.); (V.C.); (F.A.); (M.M.)
| | - Caterina Merla
- Division of Health Protection Technologies, Italian National Agency for Energy New Technologies and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123 Rome, Italy; (A.C.); (V.C.); (F.A.); (M.M.)
| | - Mirella Tanori
- Division of Health Protection Technologies, Italian National Agency for Energy New Technologies and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123 Rome, Italy; (A.C.); (V.C.); (F.A.); (M.M.)
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Mazzarda F, Chittams-Miles AE, Pittaluga J, Sözer EB, Vernier PT, Muratori C. Inflammasome Activation and IL-1β Release Triggered by Nanosecond Pulsed Electric Fields in Murine Innate Immune Cells and Skin. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:335-345. [PMID: 38047899 PMCID: PMC10752860 DOI: 10.4049/jimmunol.2200881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 11/08/2023] [Indexed: 12/05/2023]
Abstract
Although electric field-induced cell membrane permeabilization (electroporation) is used in a wide range of clinical applications from cancer therapy to cardiac ablation, the cellular- and molecular-level details of the processes that determine the success or failure of these treatments are poorly understood. Nanosecond pulsed electric field (nsPEF)-based tumor therapies are known to have an immune component, but whether and how immune cells sense the electroporative damage and respond to it have not been demonstrated. Damage- and pathogen-associated stresses drive inflammation via activation of cytosolic multiprotein platforms known as inflammasomes. The assembly of inflammasome complexes triggers caspase-1-dependent secretion of IL-1β and in many settings a form of cell death called pyroptosis. In this study we tested the hypothesis that the nsPEF damage is sensed intracellularly by the NLRP3 inflammasome. We found that 200-ns PEFs induced aggregation of the inflammasome adaptor protein ASC, activation of caspase-1, and triggered IL-1β release in multiple innate immune cell types (J774A.1 macrophages, bone marrow-derived macrophages, and dendritic cells) and in vivo in mouse skin. Efflux of potassium from the permeabilized cell plasma membrane was partially responsible for nsPEF-induced inflammasome activation. Based on results from experiments using both the NRLP3-specific inhibitor MCC950 and NLRP3 knockout cells, we propose that the damage created by nsPEFs generates a set of stimuli for the inflammasome and that more than one sensor can drive IL-1β release in response to electrical pulse stimulation. This study shows, to our knowledge, for the first time, that PEFs activate the inflammasome, suggesting that this pathway alarms the immune system after treatment.
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Affiliation(s)
- Flavia Mazzarda
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA
| | | | - Julia Pittaluga
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA
| | - Esin B. Sözer
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA
| | - P. Thomas Vernier
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA
| | - Claudia Muratori
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA
- Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA
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Zou Y, Sun Y, Chen X, Hong L, Dong G, Bai X, Wang H, Rao B, Ren Z, Yu Z. Nanosecond pulse effectively ablated hepatocellular carcinoma with alterations in the gut microbiome and serum metabolites. Front Pharmacol 2023; 14:1163628. [PMID: 37234705 PMCID: PMC10205996 DOI: 10.3389/fphar.2023.1163628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
Background: Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related death in the world. Nanosecond pulsed electric fields (nsPEFs) have emerged as a new treatment for cancer. This study aims to identify the effectiveness of nsPEFs in the treatment of HCC and analyze the alterations in the gut microbiome and serum metabonomics after ablation. Methods: C57BL/6 mice were randomly divided into three groups: healthy control mice (n = 10), HCC mice (n = 10), and nsPEF-treated HCC mice (n = 23). Hep1-6 cell lines were used to establish the HCC model in situ. Histopathological staining was performed on tumor tissues. The gut microbiome was analyzed by 16S rRNA sequencing. Serum metabolites were analyzed by liquid chromatography-mass spectrometry (LC-MS) metabolomic analysis. Spearman's correlation analysis was carried out to analyze the correlation between the gut microbiome and serum metabonomics. Results: The fluorescence image showed that nsPEFs were significantly effective. Histopathological staining identified nuclear pyknosis and cell necrosis in the nsPEF group. The expression of CD34, PCNA, and VEGF decreased significantly in the nsPEF group. Compared with normal mice, the gut microbiome diversity of HCC mice was increased. Eight genera including Alistipes and Muribaculaceae were enriched in the HCC group. Inversely, these genera decreased in the nsPEF group. LC-MS analysis confirmed that there were significant differences in serum metabolism among the three groups. Correlation analysis showed crucial relationships between the gut microbiome and serum metabolites that are involved in nsPEF ablation of HCC. Conclusion: As a new minimally invasive treatment for tumor ablation, nsPEFs have an excellent ablation effect. The alterations in the gut microbiome and serum metabolites may participate in the prognosis of HCC ablation.
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Affiliation(s)
- Yawen Zou
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Hangzhou, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ying Sun
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Hangzhou, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinhua Chen
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Hangzhou, China
| | - Liangjie Hong
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Hangzhou, China
| | - Gang Dong
- Department of Ultrasound, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiwen Bai
- Nanchang University Queen Marry School, Nanchang, Jiangxi, China
| | - Haiyu Wang
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Hangzhou, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Benchen Rao
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Hangzhou, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhigang Ren
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Hangzhou, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zujiang Yu
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Ibrahimi N, Vallet L, Andre FM, Rivaletto M, Novac BM, Mir LM, Pécastaing L. An Overview of Subnanosecond Pulsed Electric Field Biological Effects: Toward Contactless Technologies for Cancer Treatment. Bioelectricity 2023. [DOI: 10.1089/bioe.2022.0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Affiliation(s)
- Njomza Ibrahimi
- Laboratoire des Sciences de l'Ingénieur Appliquées à la Mécanique et au Génie Électrique–Fédération IPRA, EA4581, Université de Pau et des Pays de l'Adour/E2S UPPA, Pau, France
| | - Leslie Vallet
- Université Paris-Saclay, CNRS, Gustave Roussy, UMR 9018, Metabolic and Systemic Aspects of Oncogenesis (METSY), Villejuif, France
| | - Franck M. Andre
- Université Paris-Saclay, CNRS, Gustave Roussy, UMR 9018, Metabolic and Systemic Aspects of Oncogenesis (METSY), Villejuif, France
| | - Marc Rivaletto
- Laboratoire des Sciences de l'Ingénieur Appliquées à la Mécanique et au Génie Électrique–Fédération IPRA, EA4581, Université de Pau et des Pays de l'Adour/E2S UPPA, Pau, France
| | - Bucur M. Novac
- Laboratoire des Sciences de l'Ingénieur Appliquées à la Mécanique et au Génie Électrique–Fédération IPRA, EA4581, Université de Pau et des Pays de l'Adour/E2S UPPA, Pau, France
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom
| | - Lluis M. Mir
- Université Paris-Saclay, CNRS, Gustave Roussy, UMR 9018, Metabolic and Systemic Aspects of Oncogenesis (METSY), Villejuif, France
| | - Laurent Pécastaing
- Laboratoire des Sciences de l'Ingénieur Appliquées à la Mécanique et au Génie Électrique–Fédération IPRA, EA4581, Université de Pau et des Pays de l'Adour/E2S UPPA, Pau, France
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Zhou H, Wang Z, Dong Y, Alhaskawi A, Tu T, Hasan Abdullah Ezzi S, Goutham Kota V, Hasan Abdulla Hasan Abdulla M, Li P, Wu B, Chen Y, Lu H. New advances in treatment of skin malignant tumors with nanosecond pulsed electric field: A literature review. Bioelectrochemistry 2023; 150:108366. [PMID: 36641842 DOI: 10.1016/j.bioelechem.2023.108366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 12/05/2022] [Accepted: 01/03/2023] [Indexed: 01/07/2023]
Abstract
BACKGROUND Nanosecond pulsed electric field, with its unique bioelectric effect, has shown broad application potential in the field of tumor therapy, especially in malignant tumors and skin tumors. MAIN BODY In this paper, we discuss the therapeutic effects and mechanisms of nanosecond pulsed electric field on three common skin cancers, namely, malignant melanoma, squamous cell carcinoma and basal cell carcinoma, as well as its application to other benign skin diseases and future development and improvement directions. CONCLUSION In general, nanosecond pulsed electric field mainly exerts its ablative effect on tumors through subcellular membrane electroporation effect. It is cell type-specific, has less thermal damage, and can have synergistic effect with chemotherapy drugs, making it a very promising new method for tumor treatment.
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Affiliation(s)
- Haiying Zhou
- Department of Orthopedics, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | - Zewei Wang
- Zhejiang University School of Medicine, #866 Yuhangtang Road, Hangzhou, Zhejiang Province 310058, PR China
| | - Yanzhao Dong
- Department of Orthopedics, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | - Ahmad Alhaskawi
- Department of Orthopedics, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | - Tian Tu
- Department of Plastic and Aesthetic Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | | | - Vishnu Goutham Kota
- Zhejiang University School of Medicine, #866 Yuhangtang Road, Hangzhou, Zhejiang Province 310058, PR China
| | | | - Pengfei Li
- Department of Plastic and Aesthetic Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | - Bin Wu
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Ruidi Biotech Ltd. #2959 Yuhangtang Road, Hangzhou, Zhejiang Province 310000, PR China
| | - Yonggang Chen
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Ruidi Biotech Ltd. #2959 Yuhangtang Road, Hangzhou, Zhejiang Province 310000, PR China
| | - Hui Lu
- Department of Orthopedics, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China; Alibaba-Zhejiang University Joint Research Center of Future Digital Healthcare, Zhejiang University, #866 Yuhangtang Road, Hangzhou, Zhejiang Province 310058, PR China.
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Katz BE, Nestor MS, Nuccitelli R, Johnston LJ, Knape WA. Safety and effectiveness of nano-pulse stimulation™ technology to treat acne vulgaris of the back. J Cosmet Dermatol 2023; 22:1545-1553. [PMID: 36645338 DOI: 10.1111/jocd.15633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/08/2022] [Accepted: 01/03/2023] [Indexed: 01/17/2023]
Abstract
BACKGROUND AND OBJECTIVES This feasibility study describes the effects of Nano-pulse stimulation™ (NPS™) technology using the CellFX™ System on acne vulgaris of the back with the objectives of demonstrating safety and effectiveness. The CellFX System applies nanosecond pulses of electrical energy to induce highly localized regulated cell death (RCD) in the cellular structures of the targeted zone with no thermal effect on the tissue and negligible effects on surrounding non-cellular components. STUDY DESIGN/MATERIALS AND METHODS Seventeen subjects were enrolled at two sites with thirteen subjects completing treatment. Three 7 X 7 cm regions containing at least five bacne lesions each were identified, one region treated with the CellFX across three treatment sessions, the second region treated as a sham using microneedle tip placement without delivering energy, and the third as an untreated control. RESULTS CellFX-treated areas showed an average reduction of acne lesions of 82% by 90 days post-last procedure. Acne improvement was observed in 100% of CellFX-treated regions compared to 39% improvement in Sham regions and 31% improvement in the control regions. The most common skin effects were erythema and hyperpigmentation observed in 23% and 92% of the subjects, respectively, at the last timepoint. No serious adverse events were reported. CONCLUSIONS CellFX is a safe and effective procedure for clearing back acne.
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Affiliation(s)
- Bruce E Katz
- Juva Skin and Laser Center, New York, New York, USA
| | - Mark S Nestor
- Center for Clinical and Cosmetic Research, Aventura, Florida, USA.,Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.,Department of Surgery, Division of Plastic and Reconstructive Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
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Elgash M, Bar A, Dhossche J. Refractory focal epithelial hyperplasia successfully treated with novel use of nano-pulse stimulation technology. Pediatr Dermatol 2022; 39:667-670. [PMID: 35523726 DOI: 10.1111/pde.15005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/29/2022] [Indexed: 11/29/2022]
Abstract
Focal epithelial hyperplasia (FEH), or Heck's disease, is an uncommon HPV-related dermatosis that presents with multiple discrete papules or nodules on the lips, tongue, and gingival or oral mucosa. Treatment is often sought due to cosmesis, social stigma, and functional impairment. Treatment is challenging and a variety of treatment modalities have been attempted with varying degrees of success. This report describes the novel use of nano-pulse stimulation in the successful treatment of recalcitrant FEH of the upper and lower vermillion lip.
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Affiliation(s)
- May Elgash
- Department of Dermatology, Oregon Health and Science University, Portland, Oregon, USA
| | - Anna Bar
- Department of Dermatology, Oregon Health and Science University, Portland, Oregon, USA
| | - Julie Dhossche
- Department of Dermatology, Oregon Health and Science University, Portland, Oregon, USA
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Nuccitelli R, LaTowsky BM, Lain E, Munavalli G, Loss L, Ross EV, Jauregui L, Knape WA. Safety and Efficacy of Nano-Pulse Stimulation Treatment of Non-Genital, Cutaneous Warts (Verrucae). Lasers Surg Med 2021; 53:1301-1306. [PMID: 34008877 PMCID: PMC9291480 DOI: 10.1002/lsm.23423] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/18/2021] [Accepted: 05/09/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND OBJECTIVES This study describes the effects of nano-pulse stimulation (NPS) technology on the common verruca with the objectives of demonstrating efficacy and safety. NPS technology applies nanosecond pulses of non-thermal electrical energy to induce highly localized regulated cell death in the cellular structures of the targeted zone with negligible effects on surrounding non-cellular structures. Previous clinical studies applying NPS to common, benign skin lesions have demonstrated safety and efficacy in clearing seborrheic keratoses and sebaceous hyperplasia. STUDY DESIGN/MATERIALS AND METHODS Sixty-two subjects were enrolled at a total of five sites. One hundred and ninety-five study verrucae up to 10 mm wide were treated with NPS delivered by a console-based handheld applicator (CellFX® System; Pulse Biosciences) and follow-ups occurred every 30 days with the option to retreat at 30, 60, and 90 days. There were 62 untreated controls and 46% of the treated verrucae were recalcitrant. RESULTS Overall, 75.3% (70/93) of the common verrucae, 72.7% (8/11) of the flat verrucae, and 43.8% (14/32) of the plantar verrucae treated with NPS were completely clear by 60 days following the last treatment and did not recur within the 120-day observation period. The majority (54%) of verrucae cleared with a single NPS procedure. The most common treatment site reactions were erythema (50.5%) and eschar formation (23.4%) on Day 30 and on Day 120 mild erythema was present in 14% of the cases and hyperpigmentation in 18.5%. No serious adverse events were reported. A particle counter was used during 11 NPS procedures on verrucae and no significant plume generation was detected during these procedures. CONCLUSIONS NPS is a safe and effective procedure for removing non-genital, cutaneous verrucae. Lasers Surg. Med. © 2021 The Authors. Lasers in Surgery and Medicine published by Wiley Periodicals LLC.
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Affiliation(s)
| | - Brenda M LaTowsky
- Clear Dermatology and Aesthetics Center, 20201N. Scottsdale Healthcare Dr. #260, Scottsdale, Arizona, 85255
| | - Edward Lain
- Sanova Dermatology, 1601 E Pflugerville Pkwy,Bldg 1 Ste 1102, Pflugerville, Texas, 78660
| | - Girish Munavalli
- Dermatology, Laser & Vein Specialists, 1918 Randolph Rd., Charlotte, North Carolina, 28207
| | - Lesley Loss
- Dermatology Associates, 100 White Spruce Blvd, Rochester, New York, 14623
| | - E Victor Ross
- Scripps Clinic, 3811 Valley Centre Dr., San Diego, California, 92130
| | - Lauren Jauregui
- Pulse Biosciences, 3957 Point Eden Way, Hayward, California, 94545
| | - William A Knape
- Pulse Biosciences, 3957 Point Eden Way, Hayward, California, 94545
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Management of Difficult-to-Treat Warts: Traditional and New Approaches. Am J Clin Dermatol 2021; 22:379-394. [PMID: 33432476 DOI: 10.1007/s40257-020-00582-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2020] [Indexed: 10/24/2022]
Abstract
Warts are regularly treated by dermatologists, and while many respond readily to first-line treatments, others may represent a therapeutic challenge. Large, deep, numerous, and extensive warts; treatment-resistant lesions with higher risk for side effects, such as hypopigmentation; or patients unable to tolerate or comply with our treatment regimen, may need alternative treatment options. In this work we review the characteristics of select modalities that should be considered for difficult-to-treat warts. We discuss efficacy and tolerability data as well as practical features that can guide us to select the best treatment for every scenario. Novel approaches, still in an investigational phase, are also discussed to illustrate potential future directions of wart treatment.
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Xiao S, Yamada R, Zhou C. Quadrupoles for Remote Electrostimulation Incorporating Bipolar Cancellation. Bioelectricity 2020; 2:382-390. [PMID: 34476367 PMCID: PMC8370348 DOI: 10.1089/bioe.2020.0024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Introduction: A method that utilizes nanosecond bipolar cancellation (BPC) near a quadrupole electrodes to suppress a biological response but cancels the distal BPC at the quadrupole center, i.e., cancellation of cancellation (CANCAN), may allow for a remote focused stimulation at the quadrupole center. Objectives: The primary object of this study was to outline the requirement of the CANCAN implementation and select an effective quadrupole configuration. Results: We have studied three quadrupole electrode configurations, a rod quadrupole, a plate quadrupole (Plate-Q), and a resistor quadrupole. The pulse shapes of electric fields include monophasic pulses, cancellation pulses, and additive pulses. The Plate-Q appears the best for CANCAN as it shows the highest percentage of cancellation pulses among all pulse shapes, allowing for the best spatial focus. Conclusion: For the region of interest characterized in the Plate-Q configuration, the maximum magnitude of bipolar field is twice as that of the unipolar field, which allows for the CANCAN demonstration that involves membrane electropermeabilization.
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Affiliation(s)
- Shu Xiao
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia, USA
- Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia, USA
| | - Ryo Yamada
- Graduate School, Kumamoto University, Kumamoto, Japan
| | - Carol Zhou
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia, USA
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Das B, Shrirao A, Golberg A, Berthiaume F, Schloss R, Yarmush ML. Differential Cell Death and Regrowth of Dermal Fibroblasts and Keratinocytes After Application of Pulsed Electric Fields. Bioelectricity 2020; 2:175-185. [PMID: 34471845 PMCID: PMC8370327 DOI: 10.1089/bioe.2020.0015] [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] [Indexed: 01/04/2023] Open
Abstract
Background: High-powered pulsed electric fields (PEF) may be used for tissue debridement and disinfection, while lower PEF intensities may stimulate beneficial cellular responses for wound healing. We investigated the dual effects of nonuniform PEF on cellular death and stimulation. Methods: Dermal fibroblast or keratinocyte monolayers were exposed to PEF induced by two needle electrodes (2 mm apart). Voltages (100-600 V; 1 Hz; 70 micros pulse width; 90 pulses/cycle) were applied between the two electrodes. Controls consisted of similar monolayers subjected to a scratch mechanical injury. Results: Cell growth and closure of the cell-free gap was faster in PEF-treated cell monolayers versus scratched ones. Media conditioned from cells pre-exposed to PEF, when applied to responder cells, stimulated greater proliferation than media from scratched monolayers. Conclusions: PEF treatment causes the release of soluble factors that promote cell growth, and thus may play a role in the accelerated healing of wounds post PEF.
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Affiliation(s)
- Bodhisatwa Das
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey, USA
| | - Anil Shrirao
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey, USA
| | - Alexander Golberg
- Department of Environmental Studies, Tel Aviv University, Tel Aviv, Israel
| | - Francois Berthiaume
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey, USA
| | - Rene Schloss
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey, USA
| | - Martin L. Yarmush
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey, USA
- Center for Engineering in Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Shriners Hospitals for Children, Boston, Massachusetts, USA
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