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Wound healing by electricity

Lily Wei Chen, Chien-Jung Huang, Wen-Hui Tu, Chia-Ju Lu, Yi-Chen Sun, Szu-Yuan Lin, Wei-Li Chen
PURPOSE: To evaluate whether lyophilized human platelet lysate (HPL) powder can preserve the growth factor concentrations and epitheliotrophic properties of liquid HPL, and potentially be used as a clinically-friendly treatment option. METHODS: Two commercialized liquid HPLs, UltraGRO TM (Helios, Atlanta, GA) and PLTMax (Mill Creek, Rochester, MI), were obtained and converted to lyophilized powder. After redissolution, lyophilized powder HPLs were compared with liquid HPLs, as well as human peripheral serum (HPS) and fetal bovine serum (FBS) in liquid or redissolved lyophilized powder forms...
2018: PloS One
Dorothee Boehm, Konstantin Bergmeister, Emre Gazyakan, Thomas Kremer, Ulrich Kneser, Volker J Schmidt
AIMS: Reconstruction of breasts and chest wall deformities in female patients after severe burn injury is a challenge for reconstructive surgeons. In these patients, neither implant-based procedures nor standard free flaps are sometimes applicable because of limited skin quality and unavailability of donor sites at the abdomen, back, buttock, or medial thigh. METHODS: We present a case of a young female patient with a history of 80 % total body surface area burn after electric high-voltage injury...
March 13, 2018: Annals of Plastic Surgery
Karl H Schoenbach
This article is based on my presentation at the D'Arsonval Ceremony at the Joint Annual Meeting of the Bioelectromagnetics Society and the European BioElectromagnetics Association in Hangzhou, China, in June of 2017. It describes the pathway from the first studies on the effects of intense, nanosecond pulses on biological cells to the development of medical therapies based on these effects. The motivation for the initial studies of the effects of high voltage, nanosecond pulses on mammalian cells was based on a simple electrical circuit model, which predicted that such pulses allow us to affect not just the plasma membrane but also the subcellular structures...
March 12, 2018: Bioelectromagnetics
Xue Qu, Huan Liu, Chuchu Zhang, Yu Lei, Miao Lei, Miao Xu, Dawei Jin, Peng Li, Meng Yin, Gregory F Payne, Changsheng Liu
Electrical signals can be imposed with exquisite spatiotemporal control and provide exciting opportunities to create structure and confer function. Here, we report the use of electrical signals to program the fabrication of a chloramine wound dressing with high antimicrobial activity. This method involves two electrofabrication steps: (i) a cathodic electrodeposition of an aminopolysaccharide chitosan triggered by a localized region of high pH; and (ii) an anodic chlorination of the deposited film in the presence of chloride...
March 2, 2018: Acta Biomaterialia
Anna Polak, Cezary Kucio, Luther C Kloth, Malgorzata Paczula, Ewa Hordynska, Tomasz Ickowicz, Edward Blaszczak, Ewa Kucio, Krystian Oleszczyk, Krzysztof Ficek, Andrzej Franek
The use of electrical stimulation (ES) should be considered for treating nonhealing pressure ulcers (PUs), but optimal ES wound treatment protocols have yet to be established. A randomized, controlled, double-blind clinical study was conducted to evaluate the effects of cathodal and anodal high-voltage monophasic pulsed current (HVMPC) on periwound skin blood flow (PSBF) and size reduction of Stage 2 to Stage 4 PUs of at least 4 weeks' duration. Persons >18 years of age, hospitalized with neurological injuries, at high risk for PU development (Norton scale <14 points; Waterlow scale >15 points), and with at least 1 Stage 2 to Stage 4 PU were eligible to participate in the study...
February 2018: Ostomy/wound Management
Brian M Kobylkevich, Anyesha Sarkar, Brady R Carlberg, Ling Huang, Suman Ranjit, David M Graham, Mark A Messerli
Weak external electric fields (EFs) polarize cellular structure and direct most migrating cells (galvanotaxis) toward the cathode, making it a useful tool during tissue engineering and healing of epidermal wounds. However, the biophysical mechanisms for sensing weak EFs remain elusive. We have reinvestigated the mechanism of cathode-directed water flow (electro-osmosis) in the boundary layer of cells, by reducing it with neutral, viscous polymers. We report that increasing viscosity with low molecular weight polymers decreases cathodal migration and promotes anodal migration in a concentration dependent manner...
February 7, 2018: Physical Biology
Rosana C Gomes, Elaine C O Guirro, Adriana C Gonçalves, Jayme A Farina Junior, Luiz O Murta Junior, Rinaldo R J Guirro
INTRODUCTION: Severe burns benefit from skin grafting, and grafting surgery is of great importance in the treatment of these injuries. As a result, there is formation of an additional wound at the donor site, which is painful and susceptible to infection. However, the therapeutic approach to these problems at donor sites for skin grafting is insufficiently explored in the literature. AIM: To evaluate electrical stimulation of the donor sites of burn patients treated by grafting surgery...
February 2, 2018: Burns: Journal of the International Society for Burn Injuries
Abdullah Al Mosabbir, Kevin Truong
Magneto-reception can be generally defined as the ability to transduce the effects of a magnetic field into a cellular response. Magnetic stimulation at the cellular level is particularly attractive due to its ability for deep penetration and minimal invasiveness, allowing remote regulation of engineered biological processes. Previously, a magnetic-responsive genetic circuit was engineered using the transient receptor potential vanilloid 1 (TRPV1) and the iron containing ferritin protein (i.e. the TF circuit)...
January 17, 2018: ACS Synthetic Biology
Jing-Chun Zhao, Kai Shi, Lei Hong, Zheng-Hua Jin, Xi Zhang, Xin-Xin Gao, Jia-Ao Yu
BACKGROUND: High-voltage electrical injuries usually cause extensive and devastating damages to the extremities. Timely and effective coverage of the wounds to maximally preserve the viable tissue is important for salvage and the ultimate functional outcome of the involved extremities. In this study, free anterolateral thigh flaps with a single-perforator pedicle were conducted to maximize tissue salvage and decrease late skeletal and neuromuscular complications of the involved extremities injured by high-voltage electricity...
March 2018: Annals of Plastic Surgery
Dan He, Mingming Zhao, Congying Wu, Wenjing Zhang, Chenguang Niu, Baoqi Yu, Jingru Jin, Liang Ji, Belinda Willard, Anna V Mathew, Y Eugene Chen, Subramaniam Pennathur, Huiyong Yin, Yuan He, Bing Pan, Lemin Zheng
Disruption of endothelial monolayer integrity is the primary instigating factor for many cardiovascular diseases. High density lipoprotein (HDL) oxidized by heme enzyme myeloperoxidase (MPO) is dysfunctional in promoting endothelial repair. Apolipoprotein A-1 mimetic 4F with its pleiotropic benefits has been proven effective in many in vivo models. In this study we investigated whether 4F promotes endothelial repair and restores the impaired function of oxidized HDL (Cl/NO2-HDL) in promoting re-endothelialization...
December 8, 2017: Redox Biology
Y M Shen, C X Ma, F J Qin, C Zhang, C Wang, X H Hu
Objective: To explore the methods and effects of wound repair and functional reconstruction of high-voltage electrical burns in wrists. Methods: From January 2009 to June 2016, 71 patients with high-voltage electrical burns in wrists were hospitalized, with 118 wrist wounds including 21 of type Ⅰ, 69 of type Ⅱ, 9 of type Ⅲ, and 19 of type Ⅳ. According to the wrist injuries, different surgical operations were performed. Forearm amputation was conducted in 20 wrists with necrosis in the distal end. On the basis of fasciotomy for decompression, early debridement was performed on the other 98 wrist wounds...
December 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
Biranche Tandon, Adrián Magaz, Richard Balint, Jonny J Blaker, Sarah H Cartmell
Electrical stimulation for delivery of biochemical agents such as genes, proteins and RNA molecules amongst others, holds great potential for controlled therapeutic delivery and in promoting tissue regeneration. Electroactive biomaterials have the capability of delivering these agents in a localized, controlled, responsive and efficient manner. These systems have also been combined for the delivery of both physical and biochemical cues and can be programmed to achieve enhanced effects on healing by establishing control over the microenvironment...
December 17, 2017: Advanced Drug Delivery Reviews
Guang Yao, Deyuan Zhang, Daxi Geng, Xinggang Jiang
The electrosurgical electrode currently stands out as one of the most commonly used tools in minimally invasive surgery. In order to facilitate tissue cutting and accelerate wound healing, tissue adhesion to the electrosurgical electrode is considered as an extremely urgent problem to be solved. In this paper, a novel ultrasonic vibration assisted (UV-A) electrosurgical electrode is firstly proposed to overcome the problem of tissue sticking. The anti-adhesion effects were evaluated by measuring the adhesion force and the weight of tissue adhesion using the electrosurgical electrode with and without UV-A comparatively...
October 20, 2017: Ultrasonics
Jun Jia, Tracey A Martin, Lin Ye, Lin Meng, Nan Xia, Wen G Jiang, Xiaodong Zhang
A characteristic of the epithelial-to-mesenchymal transition in cancer cells is the upregulation of mesenchymal markers. Fibroblast activation protein α (FAPα) is predominantly expressed by stromal fibroblasts. Previous studies have demonstrated that FAPα is also expressed by certain epithelium-derived cancer cells and is involved in the regulation of certain signaling pathways. One of our previous studies showed that FAPα promoted the proliferation of breast cancer cells via the phosphatidylinositol-3-kinase (PI3K) signaling pathway...
October 27, 2017: International Journal of Molecular Medicine
Kasturi Ganesh Barki, Amitava Das, Sriteja Dixith, Piya Das Ghatak, Shomita Mathew-Steiner, Elizabeth Schwab, Savita Khanna, Daniel J Wozniak, Sashwati Roy, Chandan K Sen
OBJECTIVE: This study was designed to employ electroceutical principles, as an alternative to pharmacological intervention, to manage wound biofilm infection. Mechanism of action of a United States Food and Drug Administration-cleared wireless electroceutical dressing (WED) was tested in an established porcine chronic wound polymicrobial biofilm infection model involving inoculation with Pseudomonas aeruginosa PAO1 and Acinetobacter baumannii 19606. BACKGROUND: Bacterial biofilms represent a major wound complication...
November 2, 2017: Annals of Surgery
Charles Khouri, Sylvain Kotzki, Matthieu Roustit, Sophie Blaise, Francois Gueyffier, Jean-Luc Cracowski
Electrical stimulation (ES) has been tested for decades to improve chronic wound healing. However, uncertainty remains on the magnitude of the efficacy and on the best applicable protocol. We conducted an effect size meta-analysis to assess the overall efficacy of ES on wound healing, to compare the efficacy of the different modalities of electrical stimulation, and to determine whether efficacy differs depending on the wound etiology, size, and age of the chronic wound. Twenty-nine randomized clinical trials with 1,510 patients and 1,753 ulcers were selected...
September 2017: Wound Repair and Regeneration
Ana Évora, Victor de Freitas, Nuno Mateus, Iva Fernandes
There is a growing market demand for the incorporation of plant-derived ingredients into new products for the cosmetic industry. Anthocyanins are polyphenols arising from plant secondary metabolism that have been shown to possess many bioactive properties such as free radical scavenging, antimicrobial, and chemopreventive activities. In this work, the biological activities of red wine and blackberry anthocyanins were assessed by developing a new keratinocyte barrier model using the HaCat cell line and a microelectrode-based biosensor device, referred to as Electric Cell-Substrate Impedance Sensing (ECIS)...
October 12, 2017: Food & Function
Jan Kyselovič, John J Leddy
Numerous scientific findings have concluded that individuals who are active tend to develop less cardiovascular disease than those who enjoy more sedentary lifestyles. Animal models have further demonstrated that the beneficial effects of training on the heart effects of training are related to the signaling pathways of myocardial hypertrophy and fibrosis. As such, fibroblasts represent a very important population of cells within the myocardium as they play a crucial role in both cardiac development and response to injury...
2017: Advances in Experimental Medicine and Biology
Tanja Popp, Robin Lüling, Ingrid Boekhoff, Thomas Seeger, Francisco Branoner, Thomas Gudermann, Horst Thiermann, Franz Worek, Dirk Steinritz
The chemical agent sulfur mustard (SM) causes erythema, skin blisters, ulcerations, and delayed wound healing. It is accepted that the underlying molecular toxicology is based on DNA alkylation. With an expected delay, DNA damage causes impairment of protein biosynthesis and disturbance of cell division. However, using the cockroach model Blaptica dubia, the presented results show that alkylating compounds provoke immediate behavior responses along with fast changes in the electrical field potential (EFP) of neurons, suggesting that lesions of DNA are probably not the only effect of alkylating compounds...
September 20, 2017: Archives of Toxicology
Richard H W Funk
This overview addresses phenomena in cell- and molecular biology which are puzzling by their fast and highly coordinated way of organization. Generally, it appears that informative processes probably involved are more on the biophysical than on the classical biochemical side. The coordination problem is explained within the first part of the review by the topic of endogenous electrical phenomena. These are found e.g. in fast tissue organization and reorganization processes like development, wound healing and regeneration...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
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