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Wound healing by electricity

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https://www.readbyqxmd.com/read/29777169/difructose-dianhydride-improves-intestinal-calcium-absorption-wound-healing-and-barrier-function
#1
Sang In Lee, In Ho Kim
The gastrointestinal tract (GIT) is critical for nutrient absorption and is an important barrier against harmful pathogens and antigens. Difructose anhydrides (DFA)-IVs are nondigestible disaccharides that enhance calcium and iron absorption by affecting the intestinal epithelial tissue. However, their effects on intestinal functions are not fully understood. In this study, we performed a feeding trial and found that dietary DFA-IVs improved growth performance, relative breast muscle and liver weight, and digestibility and blood calcium and iron concentrations in broilers...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29775839/veterinary-applications-of-pulsed-electromagnetic-field-therapy
#2
REVIEW
James S Gaynor, Sean Hagberg, Blake T Gurfein
Pulsed electromagnetic field (PEMF) therapy can non-invasively treat a variety of pathologies by delivering electric and magnetic fields to tissues via inductive coils. The electromagnetic fields generated by these devices have been found to affect a variety of biological processes and basic science understanding of the underlying mechanisms of action of PEMF treatment has accelerated in the last 10 years. Accumulating clinical evidence supports the use of PEMF therapy in both animals and humans for specific clinical indications including bone healing, wound healing, osteoarthritis and inflammation, and treatment of post-operative pain and edema...
May 7, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29762440/reconstruction-of-extensive-post-electric-burn-scalp-defects-with-exposed-bones-a-study-of-12-cases
#3
Periakaruppan Jeyakumar, Alia T Hussain, Ashik R Ahamed
The scalp is a unique part of the human body with respect to its shape and position. It is the part of the body that is usually exposed in its original form, with no covering by any means of clothing. In workplaces, especially in the electrical industry in the area of electrical substations and power transmission lines it is this part of the body that can easily come in contact with high tension electrical wires. Others who can be prone to suffer such injuries are pedestrians, people working on heights, ladies hanging clothes on terraces...
May 14, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29754319/responses-of-rainbow-trout-intestinal-epithelial-cells-to-different-kinds-of-nutritional-deprivation
#4
Patrick G Pumputis, Vivian R Dayeh, Lucy E J Lee, Phuc H Pham, Zhenzhen Liu, Senthuri Viththiyapaskaran, Niels C Bols
In order to develop an in vitro system to study the cell biology of starvation in the fish intestine, rainbow trout intestinal epithelial cells were subjected to three kinds of nutrient deprivation and evaluated for 7 days. The RTgutGC cell line was grown into monolayers in Leibovitz's basal medium supplemented with fetal bovine serum (L15/FBS) and then subjected to deprivation of serum (L15); of serum, amino acids, and vitamin (L15/ex); and of all nutrients (L15/salts). After 7 days of nutrient deprivation, the cells remained attached to the plastic surface as monolayers but changes were seen in shape, with the cells becoming more polygonal, actin and α-tubulin cytoskeleton organization, and in tight junction protein-1 (ZO-1) localization...
May 12, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29749427/anti%C3%A2-cancer-effects-of-fisetin-on-mammary-carcinoma-cells-via-regulation-of-the-pi3k-akt-mtor-pathway-in-vitro-and-in-vivo-studies
#5
Xu Sun, Xueman Ma, Qiwei Li, Yong Yang, Xiaolong Xu, Jiaqi Sun, Mingwei Yu, Kexin Cao, Lin Yang, Guowang Yang, Ganlin Zhang, Xiaomin Wang
Fisetin, a natural flavonoid found in a variety of edible and medical plants, has been suggested to inhibit the proliferation of various tumor cells and to induce apoptosis. However, the effects of fisetin on breast cancer have rarely been reported and the underlying mechanism is still undefined. The present study explored the anti‑cancer effects of fisetin on mammary carcinoma cells and the underlying mechanisms. Following treatment with fisetin, viability of 4T1, MCF‑7 and MDA‑MB‑231 cells were measured by MTT assay...
May 2, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29738296/microcurrent-as-an-adjunct-therapy-to-accelerate-chronic-wound-healing-and-reduce-patient-pain
#6
Harikrishna K R Nair
OBJECTIVE: The primary aim is to assess the efficacy of microcurrent, a form of electrical stimulation, as an adjunct therapy in accelerating healing in chronic wounds by reducing wound size and pain level. The secondary aim is to assess the qualitative changes in these parameters: inflammatory symptoms, vasodilation, sleep quality, gait and frequency of bowel movement. METHOD: Eligible patients with chronic wounds were enrolled between March and June 2016, from the Wound Care Unit, Hospital Kuala Lumpur in this consecutive case series...
May 2, 2018: Journal of Wound Care
https://www.readbyqxmd.com/read/29691902/3d-printed-functional-and-biological-materials-on-moving-freeform-surfaces
#7
Zhijie Zhu, Shuang-Zhuang Guo, Tessa Hirdler, Cindy Eide, Xiaoxiao Fan, Jakub Tolar, Michael C McAlpine
Conventional 3D printing technologies typically rely on open-loop, calibrate-then-print operation procedures. An alternative approach is adaptive 3D printing, which is a closed-loop method that combines real-time feedback control and direct ink writing of functional materials in order to fabricate devices on moving freeform surfaces. Here, it is demonstrated that the changes of states in the 3D printing workspace in terms of the geometries and motions of target surfaces can be perceived by an integrated robotic system aided by computer vision...
April 25, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29684678/hydrogen-bonds-autonomously-powered-gelatin-methacrylate-hydrogels-with-super-elasticity-self-heal-and-underwater-self-adhesion-for-sutureless-skin-and-stomach-surgery-and-e-skin
#8
Bingcheng Liu, Ying Wang, Yong Miao, Xinyu Zhang, Zhexiang Fan, Gurankit Singh, Xingying Zhang, Kaige Xu, Bingyun Li, Zhiqi Hu, Malcolm Xing
Interface-interaction induced self-healing and self-adhesive are a gem-like attribute inspired by our Mother Nature. Biocompatible gelatin methacrylate (GelMA) hydrogels exhibit tunable mechanical properties which are favorable in biomedical applications. However, it is difficult to integrate high stiffness, super-elasticity, large deformability and self-healing property together. Here, we report a GelMA-based double-network (DN) hydrogel with above properties by utilizing tannic acid (TA) as a multi-functional H-bond provider...
April 15, 2018: Biomaterials
https://www.readbyqxmd.com/read/29684268/conducting-polymers-for-tissue-engineering
#9
Baolin Guo, Peter X Ma
Electrically conducting polymers such as polyaniline, polypyrrole, polythiophene and their derivatives (mainly aniline oligomer and poly(3,4-ethylenedioxythiophene)) with good biocompatibility find wide applications in biomedical fields including bioactuators, biosensors, neural implants, drug delivery systems and tissue engineering scaffolds. This review focuses on these conductive polymers for tissue engineering application. Conductive polymers exhibited promising conductivity as bioactive scaffolds for tissue regeneration and their conductive nature allows cells or tissue cultured on them to be stimulated by electrical signals...
April 23, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29673408/long-term-scar-quality-after-hydrosurgical-versus-conventional-debridement-of-deep-dermal-burns-hycon-trial-study-protocol-for-a-randomized-controlled-trial
#10
Catherine M Legemate, Harold Goei, Esther Middelkoop, Irma M M H Oen, Tim H J Nijhuis, Kelly A A Kwa, Paul P M van Zuijlen, Gerard I J M Beerthuizen, Marianne K Nieuwenhuis, Margriet E van Baar, Cornelis H van der Vlies
BACKGROUND: Deep dermal burns require tangential excision of non-viable tissue and skin grafting to improve wound healing and burn-scar quality. Tangential excision is conventionally performed with a knife, but during the last decade hydrosurgery has become popular as a new tool for tangential excision. Hydrosurgery is generally thought to be a more precise and controlled manner of burn debridement leading to preservation of viable tissue and, therefore, better scar quality. Although scar quality is considered to be one of the most important outcomes in burn surgery today, no randomized controlled study has compared the effect of these two common treatment modalities with scar quality as a primary outcome...
April 19, 2018: Trials
https://www.readbyqxmd.com/read/29570061/high-voltage-multiphasic-nanosecond-pulses-to-modulate-cellular-responses
#11
Hollie A Ryan, Shinji Hirakawa, Enbo Yang, Chunrong Zhou, Shu Xiao
Nanosecond electric pulses are an effective power source in plasma medicine and biological stimulation, in which biophysical responses are governed by peak power and not energy. While uniphasic nanosecond pulse generators are widely available, the recent discovery that biological effects can be uniquely modulated by reversing the polarity of nanosecond duration pulses calls for the development of a multimodal pulse generator. This paper describes a method to generate nanosecond multiphasic pulses for biomedical use, and specifically demonstrates its ability to cancel or enhance cell swelling and blebbing...
April 2018: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/29565261/design-fabrication-and-structural-optimization-of-tubular-carbon-kevlar%C3%A2-pmma-graphene-nanoplates-composite-for-bone-fixation-prosthesis
#12
Fatemeh Nasiri, Saeed Ajeli, Dariush Semnani, Mohsen Jahanshahi, Rahmatollah Emadi
The present work is investigated mechanical properties of tubular carbon/Kevlar® composite coated with poly methyl methacrylate/Graphene nanoplates as used in internal fixation of bones. Carbon fibers are good candidates for developing high-strength biomaterials and due to better stress transfer and electrical properties, they can enhance tissue formation. In order to improve carbon brittleness, ductile Kevlar® was added to the composite. The tubular carbon/ Kevlar® composites have been prepared with tailorable braiding technology by changing fiber pattern and angle in composite structure and number of composite layers...
March 22, 2018: Biomedical Materials
https://www.readbyqxmd.com/read/29555969/nucleotide-mediated-spdef-modulates-tff3-mediated-wound-healing-and-intestinal-barrier-function-during-the-weaning-process
#13
Sang In Lee, In Ho Kim
Most alterations during weaning involve physiological changes in intestinal structure and function. Here, we evaluated the molecular mechanisms regulating the effects of nucleotides on weaning. Nucleotide treatment induced Trefoil factor 3 (TFF3) expression and IPEC-J2 cell growth and reduced wound width. Treatment with nucleosides and TFF3 in lipopolysaccharide-challenged IPEC-J2 cells increased intestinal transepithelial electrical resistance and decreased intestinal permeability. Additionally, nucleosides improved intestinal barrier function through induction of TFF3-mediated phosphatidylinositol 3-kinase/Akt, extracellular signal-regulated kinase 1/2, p38, and Janus kinase/signal transducer and activator of transcription signaling pathways...
March 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29547658/the-corneal-epitheliotrophic-abilities-of-lyophilized-powder-form-human-platelet-lysates
#14
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
https://www.readbyqxmd.com/read/29537997/autologous-breast-reconstruction-using-a-tensor-fascia-lata-anterior-lateral-thigh-freestyle-flap-after-extensive-electric-burn-a-case-report
#15
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...
May 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29528124/from-the-basic-science-of-biological-effects-of-ultrashort-electrical-pulses-to-medical-therapies
#16
REVIEW
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...
May 2018: Bioelectromagnetics
https://www.readbyqxmd.com/read/29505893/electrofabrication-of-functional-materials-chloramine-based-antimicrobial-film-for-infectious-wound-treatment
#17
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
https://www.readbyqxmd.com/read/29481324/a-randomized-controlled-clinical-study-to-assess-the-effect-of-anodal-and-cathodal-electrical-stimulation-on-periwound-skin-blood-flow-and-pressure-ulcer-size-reduction-in-persons-with-neurological-injuries
#18
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
https://www.readbyqxmd.com/read/29412191/reversing-the-direction-of-galvanotaxis-with-controlled-increases-in-boundary-layer-viscosity
#19
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 for healing 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...
March 9, 2018: Physical Biology
https://www.readbyqxmd.com/read/29402577/high-voltage-electric-stimulation-of-the-donor-site-of-skin-grafts-accelerates-the-healing-process-a-randomized-blinded-clinical-trial
#20
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...
May 2018: Burns: Journal of the International Society for Burn Injuries
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