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El-Sayed SE, Abdelaziz NA, El-Housseiny GS, Aboshanab KM. Nanosponge hydrogel of octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate of Alcaligenes faecalis. Appl Microbiol Biotechnol 2024; 108:100. [PMID: 38217256 PMCID: PMC10786974 DOI: 10.1007/s00253-023-12819-3] [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: 08/04/2023] [Revised: 12/06/2023] [Accepted: 12/18/2023] [Indexed: 01/15/2024]
Abstract
Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate (ODHP) was extracted in a previous study from the culture broth of soil isolate Alcaligenes faecalis MT332429 and showed a promising antimycotic activity. This study was aimed to formulate ODHP loaded β-cyclodextrins (CD) nanosponge (NS) hydrogel (HG) to control skin fungal ailments since nanosponges augment the retention of tested agents in the skin. Box-Behnken design was used to produce the optimized NS formulation, where entrapment efficiency percent (EE%), polydispersity index (PDI), and particle size (PS) were assigned as dependent parameters, while the independent process parameters were polyvinyl alcohol % (w/v %), polymer-linker ratio, homogenization time, and speed. The carbopol 940 hydrogel was then created by incorporating the nanosponges. The hydrogel fit Higuchi's kinetic release model the best, according to in vitro drug release. Stability and photodegradation studies revealed that the NS-HG remained stable under tested conditions. The formulation also showed higher in vitro antifungal activity against Candida albicans compared to the control fluconazole. In vivo study showed that ODHP-NS-HG increased survival rates, wound contraction, and healing of wound gap and inhibited the inflammation process compared to the other control groups. The histopathological examinations and Masson's trichrome staining showed improved healing and higher records of collagen deposition. Moreover, the permeability of ODHP-NS-HG was higher through rats' skin by 1.5-folds compared to the control isoconazole 1%. Therefore, based on these results, NS-HG formulation is a potential carrier for enhanced and improved topical delivery of ODHP. Our study is a pioneering research on the development of a formulation for ODHP produced naturally from soil bacteria. KEY POINTS: • Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate was successfully formulated as a nanosponge hydrogel and statistically optimized. • The new formula exhibited in vitro good stability, drug release, and higher antifungal activity against C. albicans as compared to the fluconazole. • Ex vivo showed enhanced skin permeability, and in vivo analysis showed high antifungal activity as evidenced by measurement of various biochemical parameters and histopathological examination.
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Affiliation(s)
- Sayed E El-Sayed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Sixth of October City, Giza, 12451, Egypt
| | - Neveen A Abdelaziz
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Sixth of October City, Giza, 12451, Egypt
| | - Ghadir S El-Housseiny
- Department of Microbiology and Immunology, Faculty of Pharmacy, Organization of African Unity St, Ain Shams University, Abbassia, 11566, Cairo, Egypt
| | - Khaled M Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Organization of African Unity St, Ain Shams University, Abbassia, 11566, Cairo, Egypt.
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Kaveti R, Jakus MA, Chen H, Jain B, Kennedy DG, Caso EA, Mishra N, Sharma N, Uzunoğlu BE, Han WB, Jang TM, Hwang SW, Theocharidis G, Sumpio BJ, Veves A, Sia SK, Bandodkar AJ. Water-powered, electronics-free dressings that electrically stimulate wounds for rapid wound closure. SCIENCE ADVANCES 2024; 10:eado7538. [PMID: 39110791 PMCID: PMC11305378 DOI: 10.1126/sciadv.ado7538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 06/28/2024] [Indexed: 08/10/2024]
Abstract
Chronic wounds affect ~2% of the U.S. population and increase risks of amputation and mortality. Unfortunately, treatments for such wounds are often expensive, complex, and only moderately effective. Electrotherapy represents a cost-effective treatment; however, its reliance on bulky equipment limits its clinical use. Here, we introduce water-powered, electronics-free dressings (WPEDs) that offer a unique solution to this issue. The WPED performs even under harsh conditions-situations wherein many present treatments fail. It uses a flexible, biocompatible magnesium-silver/silver chloride battery and a pair of stimulation electrodes; upon the addition of water, the battery creates a radial electric field. Experiments in diabetic mice confirm the WPED's ability to accelerate wound closure and promote healing by increasing epidermal thickness, modulating inflammation, and promoting angiogenesis. Across preclinical wound models, the WPED-treated group heals faster than the control with wound closure rates comparable to treatments requiring expensive biologics and/or complex electronics. The results demonstrate the WPED's potential as an effective and more practical wound treatment dressing.
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Affiliation(s)
- Rajaram Kaveti
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, USA
- Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), North Carolina State University, Raleigh, NC 27606, USA
| | - Margaret A. Jakus
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Henry Chen
- Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), North Carolina State University, Raleigh, NC 27606, USA
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Raleigh, NC 27606, USA
| | - Bhavya Jain
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, USA
- Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), North Carolina State University, Raleigh, NC 27606, USA
| | - Darragh G. Kennedy
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Elizabeth A. Caso
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Navya Mishra
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, USA
- Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), North Carolina State University, Raleigh, NC 27606, USA
| | - Nivesh Sharma
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, USA
- Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), North Carolina State University, Raleigh, NC 27606, USA
| | - Baha Erim Uzunoğlu
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, USA
- Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), North Carolina State University, Raleigh, NC 27606, USA
| | - Won Bae Han
- KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Tae-Min Jang
- KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Suk-Won Hwang
- KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- Department of Integrative Energy Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Georgios Theocharidis
- Joslin-Beth Israel Deaconess Foot Center and The Rongxiang Xu, MD, Center for Regenerative Therapeutics, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Brandon J. Sumpio
- Joslin-Beth Israel Deaconess Foot Center and The Rongxiang Xu, MD, Center for Regenerative Therapeutics, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Aristidis Veves
- Joslin-Beth Israel Deaconess Foot Center and The Rongxiang Xu, MD, Center for Regenerative Therapeutics, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Samuel K. Sia
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Amay J. Bandodkar
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, USA
- Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), North Carolina State University, Raleigh, NC 27606, USA
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Raleigh, NC 27606, USA
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George RE, Bay CC, Thornton SM, Knazze JT, Kane NC, Ludwig KA, Donnelly DT, Poore SO, Dingle AM. Can Electrical Stimulation Prevent Recurrence of Keloid Scars? A Scoping Review. Adv Wound Care (New Rochelle) 2024. [PMID: 38888004 DOI: 10.1089/wound.2023.0203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024] Open
Abstract
Objective: Keloids represent a symptomatic, aberrant healing process that is difficult to treat with high recurrence rates spanning from 55% to 100% if treated via excision without adjuvant therapy. Electrical stimulation (ES) has demonstrated findings that suggest it could reduce the recurrence rate of keloids after resection. Therefore, the aim of this study is to conduct a scoping review to investigate ES as an adjuvant therapy for decreasing keloid recurrence after excision. Approach: A scoping review was performed using PubMed and Web of Science databases. The search strategy encompassed terms linking keloids and various aspects of electrical stimulation. Results: Our search yielded 2,229 articles, of which 115 articles were analyzed as full text and 1 article met inclusion criteria. Despite this, ES has demonstrated other evidence that suggests its utility. ES has been shown to counter keloidic features by reducing mast cell counts, shifting wound composition from M2 to M1 macrophages, promoting angiogenesis, and controlling fibroblast orientation and location. An alternating current will orient fibroblasts perpendicular to the current without unintended migration. Innovation: Our study indicates that, based on a compilation of clinical and preclinical in vitro data, the optimal scenario for ES in the role of keloid treatment is after excision with a biphasic pulsed application and square waveform. Conclusions: ES could serve as a multifaceted, adjuvant treatment after keloid excision, steering the healing process away from keloid-associated characteristics. Its cost-effectiveness means it could be adopted globally, providing a strategy to mitigate the burden of keloids irrespective of other available treatments or economic conditions.
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Affiliation(s)
- Robert E George
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Caroline C Bay
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Sarah M Thornton
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Jessieka T Knazze
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Nicole C Kane
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kip A Ludwig
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Neurological Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Wisconsin Institute for Translational Neuroengineering, Madison, Wisconsin, USA
| | - D'Andrea T Donnelly
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Samuel O Poore
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Aaron M Dingle
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
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Saleem M, Syed Khaja AS, Moursi S, Altamimi TA, Alharbi MS, Usman K, Khan MS, Alaskar A, Alam MJ. Narrative review on nanoparticles based on current evidence: therapeutic agents for diabetic foot infection. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03094-8. [PMID: 38639898 DOI: 10.1007/s00210-024-03094-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
Diabetes's effects on wound healing present a major treatment challenge and increase the risk of amputation. When traditional therapies fail, new approaches must be investigated. With their submicron size and improved cellular internalisation, nanoparticles present a viable way to improve diabetic wound healing. They are attractive options because of their innate antibacterial qualities, biocompatibility, and biodegradability. Nanoparticles loaded with organic or inorganic compounds, or embedded in biomimetic matrices such as hydrogels, chitosan, and hyaluronic acid, exhibit excellent anti-inflammatory, antibacterial, and antioxidant properties. Drug delivery systems (DDSs)-more precisely, nanodrug delivery systems (NDDSs)-use the advantages of nanotechnology to get around some of the drawbacks of traditional DDSs. Recent developments show how expertly designed nanocarriers can carry a variety of chemicals, transforming the treatment of diabetic wounds. Biomaterials that deliver customised medications to the wound microenvironment demonstrate potential. Delivery techniques for nanomedicines become more potent than ever, overcoming conventional constraints. Therapeutics for diabetes-induced non-healing wounds are entering a revolutionary era thanks to precisely calibrated nanocarriers that effectively distribute chemicals. This review highlights the therapeutic potential of nanoparticles and outlines the multifunctional nanoparticles of the future that will be used for complete wound healing in diabetics. The investigation of novel nanodrug delivery systems has the potential to revolutionise diabetic wound therapy and provide hope for more efficient and focused therapeutic approaches.
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Affiliation(s)
- Mohd Saleem
- Department of Pathology, College of Medicine, University of Hail, 55211, Hail, Saudi Arabia.
| | | | - Soha Moursi
- Department of Pathology, College of Medicine, University of Hail, 55211, Hail, Saudi Arabia
| | - Tahani Almofeed Altamimi
- Department of Family Medicine, College of Medicine, University of Hail, 55211, Hail, Saudi Arabia
| | - Mohammed Salem Alharbi
- Department of Internal Medicine, College of Medicine, University of Hail, 55211, Hail, Saudi Arabia
| | - Kauser Usman
- Department of Internal Medicine, King George's Medical University, Lucknow, India
| | - Mohd Shahid Khan
- Department of Microbiology, Integral Institute of Medical Sciences and Research, Lucknow, India
| | - Alwaleed Alaskar
- Department of Diabetes and Endocrinology, King Salman Specialist Hospital, 55211, Hail, Saudi Arabia
| | - Mohammad Jahoor Alam
- Department of Biology, College of Science, University of Hail, 55211, Hail, Saudi Arabia
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Sabancı Baransel E, Barut S, Uçar T. The Effects Of Transcutaneous Electrical Nerve Stimulation Applied in the Early Postpartum Period After Cesarean Birth on Healing, Pain, and Comfort. J Midwifery Womens Health 2024. [PMID: 38470299 DOI: 10.1111/jmwh.13625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 01/20/2024] [Indexed: 03/13/2024]
Abstract
INTRODUCTION This study was conducted to determine the effects of transcutaneous electrical nerve stimulation (TENS) applied in the early postpartum period after cesarean birth on incision site healing, postoperative recovery, pain, and comfort. METHODS This randomized, single-blind, placebo-controlled study was conducted with 138 women (TENS group n = 46, placebo group n = 46, control group n = 46) who gave birth by cesarean between January and September 2023. TENS was applied twice at a frequency of 100 Hz with a pulse width of 100 microseconds, at 10 to 12 and 14 to 16 hours after birth, for 30 minutes each. Outcomes were measured with the Postoperative Recovery Index; Redness, Edema, Ecchymosis, Discharge, and Approximation Scale; Visual Analogue Scale; and Postpartum Comfort Questionnaire. Outcomes between groups were compared postintervention, correcting for baseline using analysis of covariance. The study was registered at www. CLINICALTRIALS gov (NCT05991921). RESULTS Mean scores for postoperative recovery were significantly lower (improved) in the TENS group (113.58) compared with the placebo and control groups (134.67, 136.61; P < .001). The postoperative recovery subscales (psychological symptoms, physical activities, appetite symptoms, bowel symptoms, general symptoms) were also significantly decreased in the TENS group compared with the placebo and control groups. Similarly, mean scores for postpartum comfort, and the corresponding physical comfort, psychospiritual comfort, and sociocultural comfort subscales, were significantly improved in the TENS group (110.26) compared with the placebo and control group (83.80, 81.19; P < .05). DISCUSSION TENS application can be preferred as an alternative method to increase pain control, recovery, and patient comfort after cesarean birth.
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Affiliation(s)
| | - Sümeyye Barut
- Department of Midwifery, Fırat University, Elazığ, Turkey
| | - Tuba Uçar
- Department of Midwifery, İnönü University, Malatya, Turkey
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6
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Rabbani M, Rahman E, Powner MB, Triantis IF. Making Sense of Electrical Stimulation: A Meta-analysis for Wound Healing. Ann Biomed Eng 2024; 52:153-177. [PMID: 37743460 PMCID: PMC10808217 DOI: 10.1007/s10439-023-03371-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 09/11/2023] [Indexed: 09/26/2023]
Abstract
Electrical stimulation as a mode of external enhancement factor in wound healing has been explored widely. It has proven to have multidimensional effects in wound healing including antibacterial, galvanotaxis, growth factor secretion, proliferation, transdifferentiation, angiogenesis, etc. Despite such vast exploration, this modality has not yet been established as an accepted method for treatment. This article reviews and analyzes the approaches of using electrical stimulation to modulate wound healing and discusses the incoherence in approaches towards reporting the effect of stimulation on the healing process. The analysis starts by discussing various processes adapted in in vitro, in vivo, and clinical practices. Later it is focused on in vitro approaches directed to various stages of wound healing. Based on the analysis, a protocol is put forward for reporting in vitro works in such a way that the outcomes of the experiment are replicable and scalable in other setups. This work proposes a ground of unification for all the in vitro approaches in a more sensible manner, which can be further explored for translating in vitro approaches to complex tissue stimulation to establish electrical stimulation as a controlled clinical method for modulating wound healing.
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Affiliation(s)
- Mamun Rabbani
- Research Centre for Biomedical Engineering, School of Science and Technology, City University of London, Northampton Square, London, ECIV 0HB, UK
| | - Enayetur Rahman
- Research Centre for Biomedical Engineering, School of Science and Technology, City University of London, Northampton Square, London, ECIV 0HB, UK
| | - Michael B Powner
- Centre for Applied Vision Research, School of Health and Psychological Sciences, City University of London, Northampton Square, London, ECIV 0HB, UK
| | - Iasonas F Triantis
- Research Centre for Biomedical Engineering, School of Science and Technology, City University of London, Northampton Square, London, ECIV 0HB, UK.
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Mahmoud NN, Hamad K, Al Shibitini A, Juma S, Sharifi S, Gould L, Mahmoudi M. Investigating Inflammatory Markers in Wound Healing: Understanding Implications and Identifying Artifacts. ACS Pharmacol Transl Sci 2024; 7:18-27. [PMID: 38230290 PMCID: PMC10789122 DOI: 10.1021/acsptsci.3c00336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 01/18/2024]
Abstract
Understanding the complex interplay of pro-inflammatory and anti-inflammatory cytokines is crucial in the field of wound healing, as it holds the key to developing effective therapeutics. In the initial stages of wound healing, pro-inflammatory cytokines like IL-1β, IL-6, TNF-α, and various chemokines play vital roles in recruiting cells for debris clearance and the recruitment of growth factors. Careful regulation and timely resolution of this early inflammation are essential for optimal wound repair. As the healing process progresses, anti-inflammatory proteins such as IL-10 and IL-4 become instrumental in facilitating the transition to later stages where pro-inflammatory cytokines promote angiogenesis and wound remodeling. This Perspective underscores the complexity of inflammatory cytokines in wound healing research and emphasizes the need for comprehensive and unbiased methodologies in their evaluation. For robust and reliable results in wound-healing research, a more holistic approach is necessary-one that considers the roles, interactions, and timing of biological molecules, alongside careful sampling and evaluation strategies.
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Affiliation(s)
- Nouf N. Mahmoud
- Faculty
of Pharmacy, Al-Zaytoonah University of
Jordan, Amman 11733, Jordan
- Department
of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
| | - Khawla Hamad
- School
of Medicine, Royal College of Surgeons in
Ireland-Bahrain, Busaiteen 228, Bahrain
| | - Aya Al Shibitini
- School
of Medicine, Royal College of Surgeons in
Ireland-Bahrain, Busaiteen 228, Bahrain
| | - Sarah Juma
- School
of Medicine, Royal College of Surgeons in
Ireland-Bahrain, Busaiteen 228, Bahrain
| | - Shahriar Sharifi
- Department
of Radiology and Precision Health Program, Michigan State University, East Lansing, Michigan 48824, United States
| | - Lisa Gould
- Warren
Alpert Medical School of Brown University, Providence, Rhode Island 02912, United
States
- South Shore
Health Center for Wound Healing, Weymouth, Massachusetts 02189, United States
| | - Morteza Mahmoudi
- Department
of Radiology and Precision Health Program, Michigan State University, East Lansing, Michigan 48824, United States
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Min Q, Gao Y, Wang Y. Bioelectricity in dental medicine: a narrative review. Biomed Eng Online 2024; 23:3. [PMID: 38172866 PMCID: PMC10765628 DOI: 10.1186/s12938-023-01189-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Bioelectric signals, whether exogenous or endogenous, play crucial roles in the life processes of organisms. Recently, the significance of bioelectricity in the field of dentistry is steadily gaining greater attention. OBJECTIVE This narrative review aims to comprehensively outline the theory, physiological effects, and practical applications of bioelectricity in dental medicine and to offer insights into its potential future direction. It attempts to provide dental clinicians and researchers with an electrophysiological perspective to enhance their clinical practice or fundamental research endeavors. METHODS An online computer search for relevant literature was performed in PubMed, Web of Science and Cochrane Library, with the keywords "bioelectricity, endogenous electric signal, electric stimulation, dental medicine." RESULTS Eventually, 288 documents were included for review. The variance in ion concentration between the interior and exterior of the cell membrane, referred to as transmembrane potential, forms the fundamental basis of bioelectricity. Transmembrane potential has been established as an essential regulator of intercellular communication, mechanotransduction, migration, proliferation, and immune responses. Thus, exogenous electric stimulation can significantly alter cellular action by affecting transmembrane potential. In the field of dental medicine, electric stimulation has proven useful for assessing pulp condition, locating root apices, improving the properties of dental biomaterials, expediting orthodontic tooth movement, facilitating implant osteointegration, addressing maxillofacial malignancies, and managing neuromuscular dysfunction. Furthermore, the reprogramming of bioelectric signals holds promise as a means to guide organism development and intervene in disease processes. Besides, the development of high-throughput electrophysiological tools will be imperative for identifying ion channel targets and precisely modulating bioelectricity in the future. CONCLUSIONS Bioelectricity has found application in various concepts of dental medicine but large-scale, standardized, randomized controlled clinical trials are still necessary in the future. In addition, the precise, repeatable and predictable measurement and modulation methods of bioelectric signal patterns are essential research direction.
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Affiliation(s)
- Qingqing Min
- Department of Endodontics, Wuxi Stomatology Hospital, Wuxi, 214000, China
| | - Yajun Gao
- Department of Endodontics, Wuxi Stomatology Hospital, Wuxi, 214000, China
| | - Yao Wang
- Department of Implantology, Wuxi Stomatology Hospital, Wuxi, 214000, China.
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9
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Monaghan MG, Borah R, Thomsen C, Browne S. Thou shall not heal: Overcoming the non-healing behaviour of diabetic foot ulcers by engineering the inflammatory microenvironment. Adv Drug Deliv Rev 2023; 203:115120. [PMID: 37884128 DOI: 10.1016/j.addr.2023.115120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 08/01/2023] [Accepted: 10/23/2023] [Indexed: 10/28/2023]
Abstract
Diabetic foot ulcers (DFUs) are a devastating complication for diabetic patients that have debilitating effects and can ultimately lead to limb amputation. Healthy wounds progress through the phases of healing leading to tissue regeneration and restoration of the barrier function of the skin. In contrast, in diabetic patients dysregulation of these phases leads to chronic, non-healing wounds. In particular, unresolved inflammation in the DFU microenvironment has been identified as a key facet of chronic wounds in hyperglyceamic patients, as DFUs fail to progress beyond the inflammatory phase and towards resolution. Thus, control over and modulation of the inflammatory response is a promising therapeutic avenue for DFU treatment. This review discusses the current state-of-the art regarding control of the inflammatory response in the DFU microenvironment, with a specific focus on the development of biomaterials-based delivery strategies and their cargos to direct tissue regeneration in the DFU microenvironment.
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Affiliation(s)
- Michael G Monaghan
- Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland; Advanced Materials and BioEngineering Research (AMBER), Centre at Trinity College Dublin and the Royal College of Surgeons in Ireland, Dublin 2, Ireland; CÚRAM, Centre for Research in Medical Devices, National University of Ireland, H91 W2TY Galway, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland
| | - Rajiv Borah
- Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland; Advanced Materials and BioEngineering Research (AMBER), Centre at Trinity College Dublin and the Royal College of Surgeons in Ireland, Dublin 2, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland
| | - Charlotte Thomsen
- Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland; Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Shane Browne
- CÚRAM, Centre for Research in Medical Devices, National University of Ireland, H91 W2TY Galway, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland; Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland.
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10
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Shi Y, Wu W. Multimodal non-invasive non-pharmacological therapies for chronic pain: mechanisms and progress. BMC Med 2023; 21:372. [PMID: 37775758 PMCID: PMC10542257 DOI: 10.1186/s12916-023-03076-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 09/11/2023] [Indexed: 10/01/2023] Open
Abstract
BACKGROUND Chronic pain conditions impose significant burdens worldwide. Pharmacological treatments like opioids have limitations. Non-invasive non-pharmacological therapies (NINPT) encompass diverse interventions including physical, psychological, complementary and alternative approaches, and other innovative techniques that provide analgesic options for chronic pain without medications. MAIN BODY This review elucidates the mechanisms of major NINPT modalities and synthesizes evidence for their clinical potential across chronic pain populations. NINPT leverages peripheral, spinal, and supraspinal mechanisms to restore normal pain processing and limit central sensitization. However, heterogeneity in treatment protocols and individual responses warrants optimization through precision medicine approaches. CONCLUSION Future adoption of NINPT requires addressing limitations in standardization and accessibility as well as synergistic combination with emerging therapies. Overall, this review highlights the promise of NINPT as a valuable complementary option ready for integration into contemporary pain medicine paradigms to improve patient care and outcomes.
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Affiliation(s)
- Yu Shi
- Department of Rehabilitation, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Wen Wu
- Department of Rehabilitation, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
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Szołtys-Brzezowska B, Bańkowska A, Piejko L, Zarzeczny R, Nawrat-Szołtysik A, Kloth LC, Polak A. Electrical Stimulation in the Treatment of Pressure Injuries: A Systematic Review of Clinical Trials. Adv Skin Wound Care 2023; 36:292-302. [PMID: 37212564 DOI: 10.1097/01.asw.0000926632.19578.b9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
GENERAL PURPOSE To provide information on evidence-based practice regarding the use of electrical stimulation for pressure injury management. TARGET AUDIENCE This continuing education activity is intended for physicians, physician assistants, nurse practitioners, and nurses with an interest in skin and wound care. LEARNING OBJECTIVES/OUTCOMES After participating in this educational activity, the participant will:1. Apply clinical practice recommendations related to the use of electrical stimulation in the treatment of pressure injuries.2. Identify issues related to the use of electrical stimulation to treat pressure injuries.
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12
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Gao T, Zhao Y, Zhao Y, He Y, Huang Q, Yang J, Zhang L, Chen J. Curative Effect and Mechanisms of Radix Arnebiae Oil on Burn Wound Healing in Rats. PLANTA MEDICA 2023. [PMID: 36513369 DOI: 10.1055/a-1997-5566] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Radix arnebiae oil (RAO) is a clinically useful traditional Chinese medical formula with outstanding curative effects on burns. However, the mechanism of the effect of RAO on wound healing remains unclear. The present study investigates the molecular mechanisms of the potential curative effect of RAO on wound healing. The concentrations of the main constituents, shikonin, imperatorin, and ferulic acid in RAO detected by HPLC were 24.57, 3.15, and 0.13 mg/mL, respectively. A rat burn model was established, and macroscopic and histopathological studies were performed. RAO significantly accelerated wound closure and repair scarring, increased superoxide dismutase activities, and reduced malondialdehyde. RAO also downregulated interleukin (IL)-6, IL-1β and tumor necrosis factor-α in wound tissues and increased secretion of vascular endothelial growth factor, epidermal growth factor, and transforming growth factor (TGF)-β1. RAO increased the gene expression of TGF-β1, type I and III collagen, and increased the protein expression of TGF-β1 and phosphorylation of PI3K and Akt. In conclusion, RAO likely promotes wound healing via antioxidant and anti-inflammatory activities and increases re-epithelization. Activation of the TGF-β1/PI3K/Akt pathway may play an important role in the healing efficacy of RAO. These findings suggest that RAO could be a promising alternative local treatment for burn wound healing.
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Affiliation(s)
- Ting Gao
- Department of Pharmaceutical Preparation, General Hospital of Ningxia Medical University, Yinchuan, China
- School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Yu Zhao
- College of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Yuna Zhao
- Department of Pharmaceutical Preparation, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Yanping He
- Department of Pharmaceutical Preparation, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Qi Huang
- Department of Biochip Research Center, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Jianhong Yang
- College of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Liming Zhang
- College of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Jing Chen
- Department of Pharmaceutical Preparation, General Hospital of Ningxia Medical University, Yinchuan, China
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13
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Zhang Z, Qi Z, Kong W, Zhang R, Yao C. Applications of MXene and its modified materials in skin wound repair. Front Bioeng Biotechnol 2023; 11:1154301. [PMID: 36994359 PMCID: PMC10042448 DOI: 10.3389/fbioe.2023.1154301] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 03/02/2023] [Indexed: 03/14/2023] Open
Abstract
The rapid healing and repair of skin wounds has been receiving much clinical attention. Covering the wound with wound dressing to promote wound healing is currently the main treatment for skin wound repair. However, the performance of wound dressing prepared by a single material is limited and cannot meet the requirements of complex conditions for wound healing. MXene is a new two-dimensional material with electrical conductivity, antibacterial and photothermal properties and other physical and biological properties, which has a wide range of applications in the field of biomedicine. Based on the pathophysiological process of wound healing and the properties of ideal wound dressing, this review will introduce the preparation and modification methods of MXene, systematically summarize and review the application status and mechanism of MXene in skin wound healing, and provide guidance for subsequent researchers to further apply MXene in the design of skin wound dressing.
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Affiliation(s)
- Ziyan Zhang
- Department of Orthopedic Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Zhiping Qi
- Department of Orthopedic Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Weijian Kong
- The Second Hospital of Jilin University, Changchun, China
| | - Renfeng Zhang
- The Second Hospital of Jilin University, Changchun, China
| | - Chunli Yao
- Department of Dermatology, The Second Hospital of Jilin University, Changchun, China
- *Correspondence: Chunli Yao,
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14
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Song JW, Ryu H, Bai W, Xie Z, Vázquez-Guardado A, Nandoliya K, Avila R, Lee G, Song Z, Kim J, Lee MK, Liu Y, Kim M, Wang H, Wu Y, Yoon HJ, Kwak SS, Shin J, Kwon K, Lu W, Chen X, Huang Y, Ameer GA, Rogers JA. Bioresorbable, wireless, and battery-free system for electrotherapy and impedance sensing at wound sites. SCIENCE ADVANCES 2023; 9:eade4687. [PMID: 36812305 PMCID: PMC9946359 DOI: 10.1126/sciadv.ade4687] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 01/20/2023] [Indexed: 05/29/2023]
Abstract
Chronic wounds, particularly those associated with diabetes mellitus, represent a growing threat to public health, with additional notable economic impacts. Inflammation associated with these wounds leads to abnormalities in endogenous electrical signals that impede the migration of keratinocytes needed to support the healing process. This observation motivates the treatment of chronic wounds with electrical stimulation therapy, but practical engineering challenges, difficulties in removing stimulation hardware from the wound site, and absence of means to monitor the healing process create barriers to widespread clinical use. Here, we demonstrate a miniaturized wireless, battery-free bioresorbable electrotherapy system that overcomes these challenges. Studies based on a splinted diabetic mouse wound model confirm the efficacy for accelerated wound closure by guiding epithelial migration, modulating inflammation, and promoting vasculogenesis. Changes in the impedance provide means for tracking the healing process. The results demonstrate a simple and effective platform for wound site electrotherapy.
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Affiliation(s)
- Joseph W. Song
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, USA
| | - Hanjun Ryu
- Department of Advanced Materials Engineering, Chung-Ang University, Anseong, Korea
| | - Wubin Bai
- Department of Applied Physical Sciences, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Zhaoqian Xie
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116023, P. R. China
- DUT-BSU Joint Institute, Dalian University of Technology, Dalian 116024, China
| | | | - Khizar Nandoliya
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | - Raudel Avila
- Department of Mechanical Engineering, Northwestern University, Evanston, IL, USA
| | - Geumbee Lee
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | - Zhen Song
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116023, P. R. China
| | - Jihye Kim
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | - Min-Kyu Lee
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | - Yugang Liu
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, USA
| | - Mirae Kim
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, USA
| | - Huifeng Wang
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, USA
| | - Yixin Wu
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | - Hong-Joon Yoon
- Department of Electronic Engineering, Gachon University, Seongnam 13120, Korea
| | - Sung Soo Kwak
- Center for Bionics of Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Korea
| | - Jaeho Shin
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | - Kyeongha Kwon
- Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Wei Lu
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | - Xuexian Chen
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871 China
| | - Yonggang Huang
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
- Department of Mechanical Engineering, Northwestern University, Evanston, IL, USA
- Departments of Civil and Environmental Engineering, Northwestern University, Evanston, IL, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Guillermo A. Ameer
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, USA
- Simpson Querrey Institute for Bionanotechnology, Evanston, IL, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- International Institute for Nanotechnology, Northwestern University, Evanston, IL, USA
| | - John A. Rogers
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, USA
- Department of Mechanical Engineering, Northwestern University, Evanston, IL, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Evanston, IL, USA
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15
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Oyebode OA, Jere SW, Houreld NN. Current Therapeutic Modalities for the Management of Chronic Diabetic Wounds of the Foot. J Diabetes Res 2023; 2023:1359537. [PMID: 36818748 PMCID: PMC9937766 DOI: 10.1155/2023/1359537] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/12/2023] Open
Abstract
Impaired wound healing is common in patients with diabetes mellitus (DM). Different therapeutic modalities including wound debridement and dressing, transcutaneous electrical nerve stimulation (TENS), nanomedicine, shockwave therapy, hyperbaric (HBOT) and topical (TOT) oxygen therapy, and photobiomodulation (PBM) have been used in the management of chronic diabetic foot ulcers (DFUs). The selection of a suitable treatment method for DFUs depends on the hosts' physiological status including the intricacy and wound type. Effective wound care is considered a critical component of chronic diabetic wound management. This review discusses the causes of diabetic wounds and current therapeutic modalities for the management of DFUs, specifically wound debridement and dressing, TENS, nanomedicine, shockwave therapy, HBOT, TOT, and PBM.
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Affiliation(s)
- Olajumoke Arinola Oyebode
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, South Africa 2028
| | - Sandy Winfield Jere
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, South Africa 2028
| | - Nicolette Nadene Houreld
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, South Africa 2028
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16
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Yang H, Datta-Chaudhuri T, George SJ, Haider B, Wong J, Hepler TD, Andersson U, Brines M, Tracey KJ, Chavan SS. High-frequency electrical stimulation attenuates neuronal release of inflammatory mediators and ameliorates neuropathic pain. Bioelectron Med 2022; 8:16. [PMID: 36195968 PMCID: PMC9533511 DOI: 10.1186/s42234-022-00098-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/25/2022] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Neuroinflammation is an important driver of acute and chronic pain states. Therefore, targeting molecular mediators of neuroinflammation may present an opportunity for developing novel pain therapies. In preclinical models of neuroinflammatory pain, calcitonin gene-related peptide (CGRP), substance P and high mobility group box 1 protein (HMGB1) are molecules synthesized and released by sensory neurons which activate inflammation and pain. High-frequency electrical nerve stimulation (HFES) has achieved clinical success as an analgesic modality, but the underlying mechanism is unknown. Here, we reasoned that HFES inhibits neuroinflammatory mediator release by sensory neurons to reduce pain. METHODS Utilizing in vitro and in vivo assays, we assessed the modulating effects of HFES on neuroinflammatory mediator release by activated sensory neurons. Dorsal root ganglia (DRG) neurons harvested from wildtype or transgenic mice expressing channelrhodopsin-2 (ChR2) were cultured on micro-electrode arrays, and effect of HFES on optogenetic- or capsaicin-induced neuroinflammatory mediator release was determined. Additionally, the effects of HFES on local neuroinflammatory mediator release and hyperalgesia was assessed in vivo using optogenetic paw stimulation and the neuropathic pain model of chronic constriction injury (CCI) of the sciatic nerve. RESULTS Light- or capsaicin-evoked neuroinflammatory mediator release from cultured transgenic DRG sensory neurons was significantly reduced by concurrent HFES (10 kHz). In agreement with these findings, elevated levels of neuroinflammatory mediators were detected in the affected paw following optogenetic stimulation or CCI and were significantly attenuated using HFES (20.6 kHz for 10 min) delivered once daily for 3 days. CONCLUSION These studies reveal a previously unidentified mechanism for the pain-modulating effect of HFES in the setting of acute and chronic nerve injury. The results support the mechanistic insight that HFES may reset sensory neurons into a less pro-inflammatory state via inhibiting the release of neuroinflammatory mediators resulting in reduced inflammation and pain.
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Affiliation(s)
- Huan Yang
- Institute for Bioelectronic Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.
| | - Timir Datta-Chaudhuri
- Institute for Bioelectronic Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.
- Elmezzi Graduate School of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA.
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
| | - Sam J George
- Institute for Bioelectronic Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
| | - Bilal Haider
- Institute for Bioelectronic Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
| | - Jason Wong
- Institute for Bioelectronic Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
| | - Tyler D Hepler
- Institute for Bioelectronic Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
| | - Ulf Andersson
- Department of Women's and Children's Health, Karolinska Institute, Karolinska University Hospital, 17176, Stockholm, Sweden
| | - Michael Brines
- Institute for Bioelectronic Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
| | - Kevin J Tracey
- Institute for Bioelectronic Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
- Elmezzi Graduate School of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Sangeeta S Chavan
- Institute for Bioelectronic Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.
- Elmezzi Graduate School of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA.
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
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17
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Polarized P(VDF-TrFE) Film Promotes Skin Wound Healing through Controllable Surface Potential. Colloids Surf B Biointerfaces 2022; 221:112980. [DOI: 10.1016/j.colsurfb.2022.112980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/16/2022] [Accepted: 10/26/2022] [Indexed: 11/05/2022]
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18
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Kulikova N, Khalilovich AZM, Konchugova T, Rachin A, Chkheidze T, Kulchitskaya D, Anatoliy F, Sanina NP, Ivanova E. Analgesic effects of high-frequency and low-frequency TENS currents in patients with distal neuropathy. Eur J Transl Myol 2022; 32. [PMID: 35833896 PMCID: PMC9580526 DOI: 10.4081/ejtm.2022.10687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 06/23/2022] [Indexed: 12/02/2022] Open
Abstract
Currently, diabetes mellitus (DM) is relevant problem, both for its prevalence and complications, including distal polyneuropathy (DPNP). At the same time, discussions continue on analgesic efficacy of transcutaneous electrical nerve stimulation (TENS) in DPNP. Aim of this study was to conduct a multi-faceted assessment of pain syndrome in these patients before and after TENS, taking into account levels of polyneuropathy, its severity and age of patients. The study was conducted in accordance with the research of the Federal State Budgetary Institution of the National Medical Research Center for Rehabilitation and Balneology of the Ministry of Health of the Russian Federation (CTR No. 121040100062-3) and with the permission of the Local Ethics Committee (IRB No. 2 dated 14.01.2021). The study included 75 patients with DM type II with DPNP, which are distributed into 3 groups of 25 people: Group 1a, patients received high–frequency TENS (HF); Group Ib, patients received low-frequency TENS (LF); as control, Group C received a standard method of pharmacological therapy without physiotherapy. Intensity of DPNP was evaluated before and after the course of treatment using a visual analog scale (VAS), the McGill Pain Questionnaire (MPQ), and a graphical linear analysis of pain on the neuropathic pain diagnostic questionnaire 4 (DN4) scale. TENS provides an analgesic effect that may exceed pharmacotherapy in terms of efficacy and safety. There was a 65.9% reduction in neuropathic pain according to VAS after a course of application, with the effects remaining up to 34% during the 6-month follow-up. HF TENS provided a higher significant analgesic effects than LF TENS, as it ensures the reduction of pain syndrome according to VAS by 25.8% (p <0.01), and total estimated characteristics - 35.5% (p <0.01), and touch - in at 58.1% (p = 0.001) and according to the scales of the MPQ (S) and DN4 - by 21% (p = 0.007). The observed differences in analgesic effects between HF TENS and LF TENS are based on analyses of pain in the immediate and long-term follow-up periods of type II DM patients with DPNP. These results, based on summation of the estimated parameters of the international pain scales support expectation of an expansion of the the use of analgesic TENS in aging patients suffering with DM of varying severity and extent of DPNP damage, a goal of great scientific and practical importance.
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Affiliation(s)
- Natalia Kulikova
- National Medical Research Center for Rehabilitation and Balneology, Ministry of Health of Russia, Moscow, Russia; Medical Institute of the Russian University of Friendship of Peoples, Moscow.
| | | | - Tatiana Konchugova
- National Medical Research Center for Rehabilitation and Balneology, Ministry of Health of Russia, Moscow.
| | - Andrey Rachin
- National Medical Research Center for Rehabilitation and Balneology, Ministry of Health of Russia, Moscow.
| | - Tinatin Chkheidze
- Medical Institute of the Russian University of Friendship of Peoples, Moscow.
| | - Detelina Kulchitskaya
- National Medical Research Center for Rehabilitation and Balneology, Ministry of Health of Russia, Moscow.
| | - Fesyun Anatoliy
- National Medical Research Center for Rehabilitation and Balneology, Ministry of Health of Russia, Moscow.
| | - Natalia P Sanina
- Moscow Regional Research Clinical Institute named after M.F. Vladimirsky, Moscow.
| | - Elena Ivanova
- National Medical Research Center for Rehabilitation and Balneology, Ministry of Health of Russia, Moscow.
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Sciatic nerve stimulation alleviates acute neuropathic pain via modulation of neuroinflammation and descending pain inhibition in a rodent model. J Neuroinflammation 2022; 19:153. [PMID: 35706025 PMCID: PMC9199305 DOI: 10.1186/s12974-022-02513-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 06/01/2022] [Indexed: 11/12/2022] Open
Abstract
Background Neuropathic pain (NP) is characterized by abnormal activation of pain conducting pathways and manifests as mechanical allodynia and thermal hypersensitivity. Peripheral nerve stimulation is used for treatment of medically refractory chronic NP and has been shown to reduce neuroinflammation. However, whether sciatic nerve stimulation (SNS) is of therapeutic benefit to NP remains unclear. Moreover, the optimal frequency for SNS is unknown. To address this research gap, we investigated the effect of SNS in an acute NP rodent model. Methods Rats with right L5 nerve root ligation (NRL) or Sham surgery were used. Ipsilateral SNS was performed at 2 Hz, 20 Hz, and 60 Hz frequencies. Behavioral tests were performed to assess pain and thermal hypersensitivity before and after NRL and SNS. Expression of inflammatory proteins in the L5 spinal cord and the immunohistochemical alterations of spinal cord astrocytes and microglia were examined on post-injury day 7 (PID7) following NRL and SNS. The involvement of the descending pain modulatory pathway was also investigated. Results Following NRL, the rats showed a decreased pain threshold and latency on the von Frey and Hargreaves tests. The immunofluorescence results indicated hyperactivation of superficial spinal cord dorsal horn (SCDH) neurons. Both 2-Hz and 20-Hz SNS alleviated pain behavior and hyperactivation of SCDH neurons. On PID7, NRL resulted in elevated expression of spinal cord inflammatory proteins including NF-κB, TNF-α, IL-1β, and IL-6, which was mitigated by 2-Hz and 20-Hz SNS. Furthermore, 2-Hz and 20-Hz SNS suppressed the activation of spinal cord astrocytes and microglia following NRL on PID7. Activity of the descending serotoninergic pain modulation pathway showed an increase early on PID1 following 2-Hz and 20-Hz SNS. Conclusions Our results support that both 2-Hz and 20-Hz SNS can alleviate NP behaviors and hyperactivation of pain conducting pathways. We showed that SNS regulates neuroinflammation and reduces inflammatory protein expression, astrocytic gliosis, and microglia activation. During the early post-injury period, SNS also facilitates the descending pain modulatory pathway. Taken together, these findings support the therapeutic potential of SNS for acute NP. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02513-y.
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20
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Jia Y, Xu J, Shi Q, Zheng L, Liu M, Wang M, Li P, Fan Y. Study on the effects of alternating capacitive electric fields with different frequencies on promoting wound healing. MEDICINE IN NOVEL TECHNOLOGY AND DEVICES 2022. [DOI: 10.1016/j.medntd.2022.100142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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21
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Elfahl AM, Abd El Baky AM, Yousef MT, Elgohary HM. High Versus Low Frequency Transcutaneous Electric Nerve Stimulation On Chronic Venous Lower Limb Ulceration Randomized Controlled Trial. INT J LOW EXTR WOUND 2022:15347346221093860. [PMID: 35422171 DOI: 10.1177/15347346221093860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
The major objective of the current paper is to trace and investigate which method is more effective whether the high or the low Transcutaneous electric Nerve Stimulations (TENS) on venous ulcers. A single-blinded, randomized, and controlled trial was done successfully. Sixty venous ulcer patients were divided randomly into three groups; Group (A): control group, Group(B): High-TENS group, and Group(C): Low-TENS group. Group (A), contains twenty participants who received routine medical care and dressing. As for group (B), includes twenty participants who obtained high-frequency TENS; Frequency (80-120) HZ, Intensity (15 - 30 amp), Pulse duration 250 Micro sec, 60 min per session with routine medical care and dressing. The third group (c) L-TENS, encompasses twenty participants who received low-frequency TENS (1-5) HZ; Intensity (30 -80 amp), Pulse duration 250 Micro sec, 60 min per session with routine medical care and dressing. All the participants were examined before and after two months of intervention; four weeks (post1), then after eight weeks (post2). Participants were examined by using (image j) to measure the ulcer area. Saline was used for measuring the ulcer volume, and a visual analog scale was adopted to evaluate pain. After drawing a comparison among the three groups after four weeks and after eight weeks of treatment, a statistically significant decrease (P <0.05) in wound surface area, wound volume, and pain in favor of L-TENS was noticed. It has been found that L- TENS is more effective than H -TENS and is highly recommended in the treatment protocol for such debilitating conditions.
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Affiliation(s)
- Ahmed M Elfahl
- Physical Therapy for Burn and Surgery Department, Faculty of Physical Therapy, 110120Modern University for Information and Technology, Cairo, Egypt
| | - Amal M Abd El Baky
- Professor of Physical Therapy for Surgery and Vice Dean for Postgraduate Studies and Scientific Research, Faculty of Physical Therapy, 531226Cairo University, Cairo, Egypt
| | - Mohamed T Yousef
- Assistant professor and chairman of Endo Vascular Surgery Department, Al-Mataria Teaching Hospital, Cairo, Egypt
| | - Hany M Elgohary
- Assistant professor of Physical Therapy for Surgery, Faculty of Physical Therapy, 531226Cairo University, Cairo, Egypt
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22
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Umur N, İldan Çalım S, Yazıcı GN, Gurgen SG. Investigation of the effect of metoclopramide on proliferation signal molecules in breast tissue. Int J Exp Pathol 2022; 103:83-89. [PMID: 35243705 DOI: 10.1111/iep.12433] [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: 10/30/2021] [Revised: 01/21/2022] [Accepted: 02/08/2022] [Indexed: 11/30/2022] Open
Abstract
Metoclopramide (MCP) is a drug that has been widely used in recent years due to its hyperprolactinaemia effect on mothers during breastfeeding. The aim of this study was to investigate the proliferative changes that MCP may cause in the maternal breast tissue. In this study, 18 Wistar albino young-adult breastfeeding mothers with their offspring were divided into three groups: control group, low-dose MCP-applied group and high-dose MCP-applied group. The experiment was carried out during the lactation period and at the end of 21 days. Prolactin, BrdU and Ki-67 breast tissue distributions were evaluated by immunohistochemistry, and tissue levels were evaluated biochemically by the ELISA method. According to ELISA and immunohistochemistry results in breast tissue, there was no significant difference between Ki-67 and BrdU results in all groups. Metoclopramide did not change the expression of proliferation molecules Ki-67 and BrdU in breast tissue. These results suggested that while metoclopramide increases breast proliferation, it does not have the risk of transforming the tissue into a tumour.
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Affiliation(s)
- Nurcan Umur
- Department of Molecular Biology, School of Vocational Health Service, Manisa Celal Bayar University, Manisa, Turkey
| | - Selda İldan Çalım
- Department of Midwifery, Faculty of Health Sciences, Manisa Celal Bayar University, Erzincan, Turkey
| | - Gülce Naz Yazıcı
- Department of Histology and Embryology, Faculty of Medicine, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - Seren Gulsen Gurgen
- Department of Histology and Embryology, School of Vocational Health Service, Manisa Celal Bayar University, Erzincan, Turkey
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Al-Zamil M, Minenko IA, Kulikova NG, Alade M, Petrova MM, Pronina EA, Romanova IV, Narodova EA, Nasyrova RF, Shnayder NA. Clinical Experience of High Frequency and Low Frequency TENS in Treatment of Diabetic Neuropathic Pain in Russia. Healthcare (Basel) 2022; 10:healthcare10020250. [PMID: 35206866 PMCID: PMC8871830 DOI: 10.3390/healthcare10020250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 01/20/2023] Open
Abstract
Background: Transcutaneous electrical nerve stimulation (TENS) is presently one of the main methods of treatment for neuropathic pain in type II diabetes mellitus. The discussion about which TENS frequency is more effective in the treatment of neuropathic pain has been ongoing for many years. Despite this, the response of different aspects of neuropathic pain to various TENS modalities has not been sufficiently studied. Aim: To analyze changes in characteristics of neuropathic pain depending on the frequency of TENS. Materials and methods: Seventy-five Russian diabetic patients with painful distal axonal neuropathy were enrolled in the study. Patients were assigned to three groups: in the HF TENS group, 25 patients received standard drug therapy (Alpha-lipoic acid, Pentoxifylline, Vitamin B12, Gabapentin) + high-frequency TENS (HF); in the LF TENS group, 25 patients received standard drug therapy (Alpha-lipoic acid, Pentoxifylline, Vitamin B12, Gabapentin) + low-frequency TENS (LF); in the control group, 25 patients underwent just standard drug therapy (Alpha-lipoic acid, Pentoxifylline, Vitamin B12, Gabapentin). Pain intensity was calculated before and after treatment with visual analogue scale (VAS), McGill pain questionnaire (MPQ), Douleur Neuropathique 4 Questions (DN4) and Pain Drawing. Results: TENS increased the therapeutic effect of standard drug therapy, in the treatment of neuropathic pain, by 65.9% and prolonged its efficacy by 31% for up to 6 months after treatment. HF TENS had a more pronounced analgesic effect than LF TENS based on VAS (34.7%), sensory (57.6%) MPQ dimensions and DN4 (21%). Affective MPQ dimension with the use of LF TENS was lower than HF TENS by 34.7% immediately after treatment, by 47.3% after 2 months and by 34.8% after 6 months of the follow-up period. Conclusion: There are significant differences between HF and LF TENS based on pain assessment using various pain scales. This reflects the distinctive effects of different TENS modalities on different aspects of neuropathic pain.
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Affiliation(s)
- Mustafa Al-Zamil
- Department of Physiotherapy, Faculty of Continuing Medical Education, Peoples’ Friendship University of Russia, 117198 Moscow, Russia;
- Correspondence: (M.A.-Z.); (N.A.S.); Tel.: +7-(812)-670-02-20 (M.A.-Z. & N.A.S.)
| | - Inessa A. Minenko
- Department of Sports Medicine and Medical Rehabilitation, Sechenov First Moscow State Medical University, 119435 Moscow, Russia;
| | - Natalia G. Kulikova
- Department of Physiotherapy, Faculty of Continuing Medical Education, Peoples’ Friendship University of Russia, 117198 Moscow, Russia;
| | | | - Marina M. Petrova
- Shared Core Facilities “Molecular and Cell Technologies”, V. F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia; (M.M.P.); (E.A.P.); (I.V.R.); (E.A.N.)
| | - Elena A. Pronina
- Shared Core Facilities “Molecular and Cell Technologies”, V. F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia; (M.M.P.); (E.A.P.); (I.V.R.); (E.A.N.)
| | - Irina V. Romanova
- Shared Core Facilities “Molecular and Cell Technologies”, V. F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia; (M.M.P.); (E.A.P.); (I.V.R.); (E.A.N.)
| | - Ekaterina A. Narodova
- Shared Core Facilities “Molecular and Cell Technologies”, V. F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia; (M.M.P.); (E.A.P.); (I.V.R.); (E.A.N.)
| | - Regina F. Nasyrova
- Institute of Personalized Psychiatry and Neurology, V.M. Bekhterev National Medical Research Centre for Psychiatry and Neurology, 192019 Saint Petersburg, Russia;
- International Centre for Education and Research in Neuropsychiatry, Samara State Medical University, 443099 Samara, Russia
| | - Natalia A. Shnayder
- Shared Core Facilities “Molecular and Cell Technologies”, V. F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia; (M.M.P.); (E.A.P.); (I.V.R.); (E.A.N.)
- Institute of Personalized Psychiatry and Neurology, V.M. Bekhterev National Medical Research Centre for Psychiatry and Neurology, 192019 Saint Petersburg, Russia;
- Correspondence: (M.A.-Z.); (N.A.S.); Tel.: +7-(812)-670-02-20 (M.A.-Z. & N.A.S.)
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Acupuncture for Primary Dysmenorrhea: A Potential Mechanism from an Anti-Inflammatory Perspective. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:1907009. [PMID: 34899943 PMCID: PMC8664518 DOI: 10.1155/2021/1907009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/07/2021] [Accepted: 11/26/2021] [Indexed: 12/17/2022]
Abstract
The low adverse effects of acupuncture for primary dysmenorrhea (PD), known as one of the most commonly reported gynecological debilitating conditions affecting women's overall health, have been thus far confirmed. Moreover, it has been increasingly recognized that inflammation is involved in such menstrual cramps, and recent studies have further shown that the anti-inflammatory effects of acupuncture are helpful in its control. This review portrays the role of inflammation in PD pathophysiology, provides evidence from clinical and animal studies on acupuncture for inflammation-induced visceral pain, and reflects on acupuncture-related therapies for dysmenorrhea with regard to their anti-inflammatory characteristics. Further research accordingly needs to be carried out to clarify the effects of acupuncture on proinflammatory factors in PD, particularly chemokines and leukocytes. Future studies on this condition from an anti-inflammatory perspective should be also performed in line with the notion of emphasizing stimulation modes to optimize the clinical modalities of acupuncture. Additionally, the effects and mechanism of more convenient self-healing approaches such as TENS/TEAS for PD should be investigated.
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Zhao Y, Wang P, Chen Z, Li M, Zhang D, Yang L, Li H. Research Progress of Electrical Stimulation in Ischemic Heart Disease. Front Cardiovasc Med 2021; 8:761877. [PMID: 34805318 PMCID: PMC8595213 DOI: 10.3389/fcvm.2021.761877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/08/2021] [Indexed: 11/13/2022] Open
Abstract
Ischemic heart disease (IHD) is a considerable health burden worldwide with high mortality and morbidity. Treatments for IHD are mainly focused on decreasing oxygen demand or increasing myocardial oxygen supply, including pharmacological, interventional, and surgical treatment, but there are also some limitations. Therefore, it is important to find a simple, effective, and economical treatment. As non-invasive and safe physiotherapy, electrical stimulation (ES) has a promising application in the treatment of IHD. Current studies suggest that ES can affect the occurrence and development of IHD by promoting angiogenesis, regulating autophagy and apoptosis, inhibiting the inflammatory response and oxidative stress. In this review, we focus predominantly on the mechanism of ES and the current progress of ES therapy in IHD, furthermore, give a brief introduction to the forms of ES in clinical application.
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Affiliation(s)
- Ying Zhao
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Pengyu Wang
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Zhe Chen
- Department of Infectious Diseases, Beidahuang Group General Hospital, Harbin, China
| | - Manman Li
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Dengfeng Zhang
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Liming Yang
- Department of Pathophysiology, Harbin Medical University-Daqing, Daqing, China
| | - Hong Li
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
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Cheng S, Lv R, Xu J, Hirman AR, Du L. IGF-1-Expressing Placenta-Derived Mesenchymal Stem Cells Promote Scalding Wound Healing. J Surg Res 2021; 265:100-113. [PMID: 33895582 DOI: 10.1016/j.jss.2021.02.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 02/01/2021] [Accepted: 02/27/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Stem cell-based regenerative therapy is a novel approach to severe damaged skin. Perinatal tissues such as placenta are considered as promising alternatives. The present study aimed to investigate the effect of insulin-like growth factor-1 (IGF-1)-expressing placenta-derived mesenchymal stem cells (hPMSCs) on healing of burn wounds. MATERIALS AND METHODS hPMSCs were isolated from human placenta, and IGF-1 was transducted into hPMSCs via lentivirus. Flow cytometry and MTT assay were performed to assess cell apoptosis and viability, respectively. Immunostaining of CK19 and ki67 was for evaluating epithelial differentiation ability and cell proliferation. For in vivo studies, we established a mouse model of scalding and performed local administration of IGF-1-expressing hPMSCs via subcutaneous injection. Wound histology was analyzed with H&E staining. The expression of fibrogenic cytokines was detected by western blot. The production of pro-inflammatory factors was measured by ELISA. RESULTS Overexpression of IGF-1 promoted cell proliferation and epithelial differentiation of hPMSCs in vitro and in vivo. Mice with burn injury displayed increased wound contraction and healing rates following treatment with IGF-1-expressing hPMSCs. There was less inflammatory infiltration and reduced collagen disposition in the presence of IGF-1 at the wound site. Administration of IGF-1-expressing hPMSCs suppressed inflammation by decreasing the levels of pro-inflammatory cytokines including tumor necrosis factor-α, interleukin-1β, and interleukin-6. Besides, IGF-1 increased VEGF expression, and decreased TGF-β1, collagen I and collagen III expressions in vivo. CONCLUSIONS IGF-1-expressing PMSCs promotes cell proliferation and epithelial differentiation, inhibits inflammation and collagen deposition, and thus contributes to wound healing.
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Affiliation(s)
- Shaohang Cheng
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Runxiao Lv
- Department of Rehabilitation, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jing Xu
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Abdul Razaq Hirman
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Lili Du
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, China.
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Luo R, Dai J, Zhang J, Li Z. Accelerated Skin Wound Healing by Electrical Stimulation. Adv Healthc Mater 2021; 10:e2100557. [PMID: 33945225 DOI: 10.1002/adhm.202100557] [Citation(s) in RCA: 114] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/06/2021] [Indexed: 01/28/2023]
Abstract
When the integrity of the skin got damaged, an endogenous electric field will be generated in the wound and a series of physiological reactions will be initiated to close the wound. The existence of the endogenous electric field of the wound has a promoting effect on all stages of wound healing. For wounds that cannot heal on their own, the exogenous electric field can assist the treatment. In this review, the effects of exogenous electrical stimulation on wound healing, such as the inflammation phase, blood flow, cell proliferation and migration, and the wound scarring is overviewed. This article also reviews the new electrical stimulation methods that have emerged in recent years, such as small power supplies, nanogenerators (NGs), and other physical, chemical or biological strategies. These new electrical stimulation methods and devices are safe, low-cost, stable, and small in size. The challenge and perspective are discussed for the future trends of the electrical stimulation treatment in accelerating skin wound healing.
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Affiliation(s)
- Ruizeng Luo
- College of Chemistry and Chemical Engineering Center of Nanoenergy Research Guangxi University Nanning 530004 China
| | - Jieyu Dai
- College of Chemistry and Chemical Engineering Center of Nanoenergy Research Guangxi University Nanning 530004 China
| | - Jiaping Zhang
- Department of Plastic Surgery State Key Laboratory of Trauma, Burns and Combined Injury Southwest Hospital Third Military Medical University (Army Medical University) Chongqing 400038 China
| | - Zhou Li
- College of Chemistry and Chemical Engineering Center of Nanoenergy Research Guangxi University Nanning 530004 China
- CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro–Nano Energy and Sensor Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China
- School of Nanoscience and Technology University of Chinese Academy of Sciences Beijing 100049 China
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Rajendran SB, Challen K, Wright KL, Hardy JG. Electrical Stimulation to Enhance Wound Healing. J Funct Biomater 2021; 12:40. [PMID: 34205317 PMCID: PMC8293212 DOI: 10.3390/jfb12020040] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/07/2021] [Accepted: 06/09/2021] [Indexed: 12/11/2022] Open
Abstract
Electrical stimulation (ES) can serve as a therapeutic modality accelerating the healing of wounds, particularly chronic wounds which have impaired healing due to complications from underlying pathology. This review explores how ES affects the cellular mechanisms of wound healing, and its effectiveness in treating acute and chronic wounds. Literature searches with no publication date restrictions were conducted using the Cochrane Library, Medline, Web of Science, Google Scholar and PubMed databases, and 30 full-text articles met the inclusion criteria. In vitro and in vivo experiments investigating the effect of ES on the general mechanisms of healing demonstrated increased epithelialization, fibroblast migration, and vascularity around wounds. Six in vitro studies demonstrated bactericidal effects upon exposure to alternating and pulsed current. Twelve randomized controlled trials (RCTs) investigated the effect of pulsed current on chronic wound healing. All reviewed RCTs demonstrated a larger reduction in wound size and increased healing rate when compared to control groups. In conclusion, ES therapy can contribute to improved chronic wound healing and potentially reduce the financial burden associated with wound management. However, the variations in the wound characteristics, patient demographics, and ES parameters used across studies present opportunities for systematic RCT studies in the future.
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Affiliation(s)
- Saranya B. Rajendran
- Lancaster Medical School, Faculty of Health and Medicine, Lancaster University, Lancaster, Lancashire LA1 4AT, UK;
| | - Kirsty Challen
- Emergency Department, Lancashire Teaching Hospitals NHS Trust, Royal Preston Hospital, Sharoe Green Lane, Preston, Lancashire PR2 9HT, UK;
| | - Karen L. Wright
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, Lancashire LA1 4YG, UK
| | - John G. Hardy
- Department of Chemistry, Faculty of Science and Technology, Lancaster University, Lancaster, Lancashire LA1 4YB, UK
- Materials Science Institute, Lancaster University, Lancaster, Lancashire LA1 4YB, UK
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Chen Y, Liang Y, Liu J, Yang J, Jia N, Zhu C, Zhang J. Optimizing microenvironment by integrating negative pressure and exogenous electric fields via a flexible porous conductive dressing to accelerate wound healing. Biomater Sci 2021; 9:238-251. [PMID: 33184620 DOI: 10.1039/d0bm01172j] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Wound healing is a complex and sequential biological process that involves multiple stages. Current treatments for nonhealing or chronic wounds are unsatisfactory as they exert a single effect on one specific activity. Herein, we constructed a silver nanowire (AgNW)-based, three-dimensional (3D), porous foam dressing that is flexible and conductive. This conductive foam dressing was composed of AgNWs modified with a stable hydrophobic coating and porous polyurethane (PU), providing a skeleton to support the 3D conductive networks. The AgNWs-PU foam dressing exhibited favorable biocompatibility, outstanding electrical properties, excellent bending-compression durability, and long-term stability under wet conditions, making it suitable for wound treatment. Via the conductive foam dressing, negative pressure and exogenous wound directional electric fields (EFs) could be integrated for simultaneous implementation, and the artificial jointly constructed microenvironment promoted wound healing in a system. This novel "all-in-one" device presented intrinsic multifunctionality, including the drainage of pus and necrotic tissue, mitigation of inflammation, promotion of cell proliferation, direction of keratinocyte migration, and induction of angiogenesis. An immunohistochemical assay and western blot analysis illustrated that the angiogenesis and cell proliferation pathways in the tissue were significantly activated when this novel therapy was adopted. More importantly, the practical performance of this "all-in-one" device was demonstrated by assessment of full-thickness defect wounds in model pigs. Comparing the percentage of residual wound area after administration of traditional treatment (25.82 ± 3.52%) and the novel treatment (3.07 ± 1.23%) demonstrated the promising applications of this novel treatment in clinical wound healing.
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Affiliation(s)
- Ying Chen
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
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Gebelik Süresince Yeşil Çay Tüketiminin Anne ve Yenidoğan Karaciğer Hepatositlerinde CK-18 Molekülüne Etkisinin Karşılaştırmalı Değerlendirilmesi. ANADOLU KLINIĞI TIP BILIMLERI DERGISI 2021. [DOI: 10.21673/anadoluklin.881516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Mozneb M, Mirtaheri E, Sanabria AO, Li CZ. Bioelectronic properties of DNA, protein, cells and their applications for diagnostic medical devices. Biosens Bioelectron 2020; 167:112441. [PMID: 32763825 DOI: 10.1016/j.bios.2020.112441] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/07/2020] [Accepted: 07/08/2020] [Indexed: 01/25/2023]
Abstract
From a couple of centuries ago, understanding physical properties of biological material, their interference with their natural host and their potential manipulation for employment as a conductor in medical devices, has gathered substantial interest in the field of bioelectronics. With the fast-emerging technologies for fabrication of diagnostic modalities, wearable biosensors and implantable devices, which electrical components are of essential importance, a need for developing novel conductors within such devices has evolved over the past decades. As the possibility of electron transport within small biological molecules, such as DNA and proteins, as well as larger elements such as cells was established, several discoveries of the modern charge characterization technologies were evolved. Development of Electrochemical Scanning Tunneling Microscopy and Nuclear Magnetic Resonance among many other techniques were of vital importance, following the discoveries made in sub-micron scales of biological material. This review covers the most recent understandings of electronic properties within different scale of biological material starting from nanometer range to millimeter-sized organs. We also discuss the state-of-the-art technology that's been made taking advantage of electronic properties of biological material for addressing diseases like Parkinson's Disease and Epilepsy.
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Affiliation(s)
- Maedeh Mozneb
- Florida International University, Biomedical Engineering Department, 10555 West Flagler Street, Miami, FL, 33174, USA.
| | - Elnaz Mirtaheri
- Florida International University, Biomedical Engineering Department, 10555 West Flagler Street, Miami, FL, 33174, USA.
| | - Arianna Ortega Sanabria
- Florida International University, Biomedical Engineering Department, 10555 West Flagler Street, Miami, FL, 33174, USA.
| | - Chen-Zhong Li
- Florida International University, Biomedical Engineering Department, 10555 West Flagler Street, Miami, FL, 33174, USA.
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Song XX, Jin LY, Li XF, Luo Y, Yu BW. Substance P Mediates Estrogen Modulation Proinflammatory Cytokines Release in Intervertebral Disc. Inflammation 2020; 44:506-517. [PMID: 32965648 DOI: 10.1007/s10753-020-01347-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 09/11/2020] [Accepted: 09/16/2020] [Indexed: 12/11/2022]
Abstract
Intervertebral disc degeneration (IDD) is a main contributor to low back pain. A close relationship exists between inflammation and pain. Estrogen can affect inflammation and may play a crucial role in IDD and pain. Substance P (SP) can also regulate the expression of pro-inflammatory cytokines in intervertebral disc (IVD). This study aimed to investigate the potential role of SP in estrogen regulation of IDD. Nine-week-old C57BL/6 female mice were divided into four groups as follows: sham surgery (sham), ovariectomy (OVX), ovariectomy plus estrogen replacement therapy (ERT) group (OVX+E2), and ovariectomy, ERT plus neurokinin 1 receptor (NK1R) agonist (OVX+E2+G). Serum E2, body, and uterus weight were recorded. Immunohistochemistry study and quantitative real-time PCR were used for SP, NK1R, IL-1β, IL-6, and TNF-α examination and comparison in IVD at protein and gene levels. After OVX, the gene and protein expression of TNF-α, IL-1β, IL-6, SP, and NK1R in NP cells significantly increased compared with the sham group. ERT can reverse these impacts. ERT plays anti-inflammatory and anti-hyperalgesic roles in IDD of OVX mice. The estrogen-induced changes of the pro-inflammatory cytokines, TNF-α, IL-1β, and IL-6, are significantly inhibited by NK1R agonists. SP may be a mediator of estrogen regulating pro-inflammatory factors in IDD. Estrogen may affect IVD inflammation through two ways: one is to directly affect the level of pro-inflammatory cytokines and the other is by means of modulation of SP.
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Affiliation(s)
- Xiao-Xing Song
- Department of Anesthesiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Lu, Shanghai, 200025, China
| | - Lin-Yu Jin
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, 100044, China
| | - Xin-Feng Li
- Department of Spine Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No. 1630, Dongfang Rd, Shanghai, 200127, People's Republic of China.
| | - Yan Luo
- Department of Anesthesiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Lu, Shanghai, 200025, China
| | - Bu-Wei Yu
- Department of Anesthesiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Lu, Shanghai, 200025, China.
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Miguel MMV, Mathias-Santamaria IF, Rossato A, Ferraz LFF, Figueiredo-Neto AM, de Marco AC, Casarin RCV, Wallet SM, Tatakis DN, Mathias MA, Santamaria MP. Microcurrent electrotherapy improves palatal wound healing: Randomized clinical trial. J Periodontol 2020; 92:244-253. [PMID: 32783220 DOI: 10.1002/jper.20-0122] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 05/07/2020] [Accepted: 05/31/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND This study was conducted to assess the clinical, immunological, and patient-centered outcomes of microcurrent electrotherapy on palatal wound healing. METHODS This was a parallel, double-masked randomized clinical trial, in which 53 patients with ridge preservation indications were selected and randomly assigned to one of two groups. In the control (sham) group (n = 27), palatal wounds, after free gingival grafts (FGG) harvest, received sham application of electrotherapy. In the test (electrotherapy treatment [EE]) group (n = 26), palatal wounds, after FGG harvest, received application of microcurrent electrotherapy protocol. Clinical parameters, patient-centered outcomes, and inflammatory markers were evaluated, up to 90 days postoperatively. RESULTS The EE group achieved earlier wound closure (P <0.001) and epithelialization (P <0.05; P = 0.03) at 7 and 14 days after harvest when compared with the sham group. Painful symptomatology was reported less frequently in the EE group than in the sham group at 3-day follow-up (P = 0.008). Likewise, an improvement in Oral Health Impact Profile was reported 2 days after the procedure by the EE group (P = 0.04). In addition, favorable modulation of inflammatory wound healing markers occurred when electrotherapy was applied. CONCLUSION Within the limits of the present study, it can be concluded that the use of a low-intensity electrotherapy protocol may accelerate palatal wound healing and decrease patient discomfort after FGG harvest.
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Affiliation(s)
- Manuela Maria Viana Miguel
- Division of Periodontics, Unesp - São Paulo State University, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - Ingrid Fernandes Mathias-Santamaria
- Division of Periodontics, Unesp - São Paulo State University, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil.,National Institute of Science and Technology-Complex Fluids, São Paulo, Brazil
| | - Amanda Rossato
- Division of Periodontics, Unesp - São Paulo State University, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - Laís Fernanda Ferreira Ferraz
- Division of Periodontics, Unesp - São Paulo State University, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | | | - Andrea Carvalho de Marco
- Division of Periodontics, Unesp - São Paulo State University, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
| | - Renato Corrêa Viana Casarin
- Department of Prosthodontics and Periodontics, Division of Periodontics, University of Campinas Piracicaba Dental School Piracicaba, São Paulo, Brazil
| | | | - Dimitris N Tatakis
- College of Dentistry, Division of Periodontology, The Ohio State University, Columbus, OH, USA
| | - Marcio Antonio Mathias
- FEI University, Department of Electrical Engineering, São Bernardo do Campo, São Paulo, Brazil
| | - Mauro Pedrine Santamaria
- Division of Periodontics, Unesp - São Paulo State University, Institute of Science and Technology, São José dos Campos, São Paulo, Brazil
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Lin T, Gargya A, Singh H, Sivanesan E, Gulati A. Mechanism of Peripheral Nerve Stimulation in Chronic Pain. PAIN MEDICINE (MALDEN, MASS.) 2020; 21:S6-S12. [PMID: 32804230 PMCID: PMC7828608 DOI: 10.1093/pm/pnaa164] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION With the advancement of technology, peripheral nerve stimulation (PNS) has been increasingly used to treat various chronic pain conditions. Its origin is based on the gate control theory postulated by Wall and Melzack in 1965. However, the exact mechanism behind PNS' analgesic effect is largely unknown. In this article, we performed a comprehensive literature review to overview the PNS mechanism of action. DESIGN A comprehensive literature review on the mechanism of PNS in chronic pain. METHODS Comprehensive review of the available literature on the mechanism of PNS in chronic pain. Data were derived from database searches of PubMed, Scopus, and the Cochrane Library and manual searches of bibliographies and known primary or review articles. RESULTS Animal, human, and imaging studies have demonstrated the peripheral and central analgesic mechanisms of PNS by modulating the inflammatory pathways, the autonomic nervous system, the endogenous pain inhibition pathways, and involvement of the cortical and subcortical areas. CONCLUSIONS Peripheral nerve stimulation exhibits its neuromodulatory effect both peripherally and centrally. Further understanding of the mechanism of PNS can help guide stimulation approaches and parameters to optimize the use of PNS.
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Affiliation(s)
- Tiffany Lin
- Department of Anesthesiology, NewYork-Presbyterian/Weill Cornell Medical Center, New York, New York
| | - Akshat Gargya
- Department of Anesthesiology, NewYork-Presbyterian/Weill Cornell Medical Center, New York, New York
| | - Harmandeep Singh
- Department of Anesthesiology, NewYork-Presbyterian/Weill Cornell Medical Center, New York, New York
| | - Eellan Sivanesan
- Department of Anesthesiology, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Amitabh Gulati
- Department of Anesthesiology and Critical Care, Memorial Sloan Kettering Cancer Center, New York, USA
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You D, Li K, Guo W, Zhao G, Fu C. Poly (lactic-co-glycolic acid)/graphene oxide composites combined with electrical stimulation in wound healing: preparation and characterization. Int J Nanomedicine 2019; 14:7039-7052. [PMID: 31564864 PMCID: PMC6722438 DOI: 10.2147/ijn.s216365] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 08/09/2019] [Indexed: 12/20/2022] Open
Abstract
PURPOSE In this study, we fabricated multifunctional, electrically conductive composites by incorporating graphene oxide (GO) into a poly (lactic-co-glycolic acid) (PLGA) copolymer for wound repair. Furthermore, the resultant composites were coupled with electrical stimulation to further improve the therapeutic effect of wound repair. METHODS We evaluated the surface morphology of the composites, as well as their physical properties, cytotoxicity, and antibacterial activity, along with the combined effects of composites and electrical stimulation (ES) in a rat model of wound healing. RESULTS Application of the PLGA/GO composites to full-thickness wounds confirmed their advantageous biological properties, as evident from the observed improvements in wound-specific mechanical properties, biocompatibility, and antibacterial activity. Additionally, we found that the combination of composites and ES improved composite-mediated cell survival and accelerated wound healing in vivo by promoting neovascularization and the formation of type I collagen. CONCLUSION These results demonstrated that combined treatment with the PLGA/GO composite and ES promoted vascularization and epidermal remodeling and accelerated wound healing in rats, thereby suggesting the efficacy of PLGA/GO+ES for broad applications associated with wound repair.
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Affiliation(s)
- Di You
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun130033, People’s Republic of China
| | - Kai Li
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun130033, People’s Republic of China
| | - Wenlai Guo
- Department of Hand and Foot Surgery, The Second Hospital of Jilin University, Changchun130012, People’s Republic of China
| | - Guoqing Zhao
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun130033, People’s Republic of China
| | - Chuan Fu
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun130033, People’s Republic of China
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Bang YR, Jeon HJ, Yoon IY. Modest Effects of Low-frequency Electrical Stimulation on Patients with Chronic Insomnia in an Open Trial. SLEEP MEDICINE RESEARCH 2019. [DOI: 10.17241/smr.2019.00346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Electrical impulse effects on degenerative human annulus fibrosus model to reduce disc pain using micro-electrical impulse-on-a-chip. Sci Rep 2019; 9:5827. [PMID: 30967598 PMCID: PMC6456732 DOI: 10.1038/s41598-019-42320-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 03/29/2019] [Indexed: 02/06/2023] Open
Abstract
Electrical stimulation of cells and tissues for therapeutic benefit is a well-established method. Although animal studies can emulate the complexity of an organism’s physiology, lab-on-a-chip platforms provide a suitable primary model for follow-up animal studies. Thus, inexpensive and easy-to-use platforms for in vitro human cell studies are required. In the present study, we designed a micro-electrical impulse (micro-EI)-on-a-chip (micro-EI-chip), which can precisely control electron density and adjust the frequency based on a micro-EI. The micro-EI-chip can stimulate cells at various micro-EI densities (0–500 mV/mm) and frequencies (0–300 Hz), which enables multiple co-culture of different cell types with or without electrical stimulation. As a proof-of-concept study, a model involving degenerative inflamed human annulus fibrosus (hAF) cells was established in vitro and the effects of micro-EI on inflamed hAF cells were evaluated using the micro-EI-chip. Stimulation of the cells (150 mV/mm at 200 Hz) inhibited the secretion of inflammatory cytokines and downregulated the activities of extracellular matrix-modifying enzymes and matrix metalloproteinase-1. These results show that micro-EI stimulation could affect degenerative diseases based on inflammation, implicating the micro-EI-chip as being useful for basic research of electroceuticals.
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Hyperbaric oxygen therapy: Antimicrobial mechanisms and clinical application for infections. Biomed Pharmacother 2018; 109:440-447. [PMID: 30399579 DOI: 10.1016/j.biopha.2018.10.142] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/19/2018] [Accepted: 10/24/2018] [Indexed: 11/24/2022] Open
Abstract
Hyperbaric oxygen therapy (HBOT) is a treatment procedure that involves breathing 100% O2 for a certain time and under a certain pressure. HBOT is commonly administrated as a primary or alternative therapy for different diseases such as infections. In this paper, we reviewed the general aspect of HBOT procedures, the mechanisms of antimicrobial effects and the application in the treatment of infections. Parts of the antimicrobial effects of HBOT are believed to result of reactive from the formation of reactive oxygen species (ROS). It is also said that HBOT enhances the antimicrobial effects of the immune system and has an additive or synergistic effect with certain antimicrobial agents. HBOT has been described as a useful procedure for different infections, particularly in deep and chronic infections such as necrotizing fasciitis, osteomyelitis, chronic soft tissue infections, and infective endocarditis. The anti-inflammation property of HBOT has demonstrated that it may play a significant role in decreasing tissue damage and infection expansion. Patients treated by HBOT need carful pre-examination and monitoring. If safety standards are strictly tracked, HBOT can be considered a suitable procedure with an apt rate of complication.
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Chakravarthy KV, Xing F, Bruno K, Kent AR, Raza A, Hurlemann R, Kinfe TM. A Review of Spinal and Peripheral Neuromodulation and Neuroinflammation: Lessons Learned Thus Far and Future Prospects of Biotype Development. Neuromodulation 2018; 22:235-243. [DOI: 10.1111/ner.12859] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 07/18/2018] [Accepted: 08/15/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Krishnan V. Chakravarthy
- Department of Anesthesiology and Pain MedicineUniversity of California San Diego Health Sciences San Diego CA USA
- VA San Diego Healthcare System San Diego CA USA
| | - Fang Xing
- Department of Anesthesiology and Pain MedicineBrigham and Women's Hospital Boston MA USA
| | - Kelly Bruno
- Department of Anesthesiology and Pain MedicineUniversity of California San Diego Health Sciences San Diego CA USA
- VA San Diego Healthcare System San Diego CA USA
| | | | - Adil Raza
- Neuromodulation Division, Abbott Plano TX USA
| | - Rene Hurlemann
- Department of Psychiatry, Division of Medical Psychology (NEMO Neuromodulation of Emotions)Rheinische Friedrich Wilhelms‐University Hospital Bonn Germany
| | - Thomas M. Kinfe
- Department of Psychiatry, Division of Medical Psychology (NEMO Neuromodulation of Emotions)Rheinische Friedrich Wilhelms‐University Hospital Bonn Germany
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Effects of Transcutaneous Electrical Nerve Stimulation on Proinflammatory Cytokines: Systematic Review and Meta-Analysis. Mediators Inflamm 2018; 2018:1094352. [PMID: 29805310 PMCID: PMC5901481 DOI: 10.1155/2018/1094352] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 03/01/2018] [Indexed: 11/29/2022] Open
Abstract
The mechanism of pain reduction involves bidirectional processes of pain blocking (nociception) and reductions in the levels of proinflammatory cytokines in the blood. Does transcutaneous electrical nerve stimulation (TENS) reduce blood levels of proinflammatory cytokines? For this systematic review, we searched in six databases to identify randomized controlled trials with the criteria: humans older than 18 years (adults), use of TENS in the experimental group, and having at least one pre- and postintervention blood level of at least one proinflammatory cytokine. The risk of bias and the level of evidence were assessed. Five studies were included involving 240 participants. The heterogeneity of the studies was high (I2: 85%); therefore, we used a random-effects meta-analysis. It was observed through the meta-analysis synthesis measures that there were statistically significant differences following the use of TENS to reduce the general group of cytokines. When grouped by chronic disease, by postoperative settings, or by individual studies in the case of IL-6, it was observed that the significant reduction of cytokines related to the use of TENS was maintained. The use of TENS reduced the blood levels of proinflammatory cytokines (we observed a protective factor of TENS in relation to inflammation). The protocol of the systematic review was registered in PROSPERO, CRD42017060379.
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Effect of High- and Low-Frequency Transcutaneous Electrical Nerve Stimulation on Angiogenesis and Myofibroblast Proliferation in Acute Excisional Wounds in Rat Skin. Adv Skin Wound Care 2018; 29:357-63. [PMID: 27429241 DOI: 10.1097/01.asw.0000488721.83423.f3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OBJECTIVE This study evaluated the effects of high- (HF) and low-frequency (LF) transcutaneous electrical nerve stimulation on angiogenesis and myofibroblast proliferation in acute excisional wounds in rat skin. DESIGN This was an experimental controlled and randomized study. PARTICIPANTS An excisional wound was made on the back of 90 adult male EPM1-Wistar rats using an 8-mm punch. INTERVENTIONS The animals were randomly assigned to the HF group (80 Hz), LF group (5 Hz), or control group. Transcutaneous electrical nerve stimulation (pulse duration, 200 microseconds; current amplitude, 15 mA) was delivered (session length, 60 minutes) on 3 consecutive days. MEAN OUTCOME MEASURE Immunohistochemistry was performed on postoperative days 3, 7, and 14 for counting blood vessels and myofibroblasts. MEAN OUTCOME RESULTS The LF group had significantly more blood vessels than the HF group on day 3 (P = .004). The HF group had significantly less blood vessels than did the control group on days 7 (P = .002) and 14 (P = .034) and less myofibroblasts than did both the LF and control groups on day 3 (P = .004) and less than did the control group on day 7 (P = .001). CONCLUSION There seems to be a benefit to the use of LF transcutaneous electrical nerve stimulation in the healing of acute excisional wounds, but further studies are warranted.
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Machado AFP, Silva FL, Neves MAI, Nonato FL, Tacani PM, Liebano RE. Effect of high- and low- frequency transcutaneous electrical nerve stimulation (TENS) on angiogenesis and wound contraction in acute excisional wounds in rat skin. FISIOTERAPIA EM MOVIMENTO 2017. [DOI: 10.1590/1980-5918.030.004.ao02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract Introduction: Transcutaneous electrical nerve stimulation (TENS) can alter the local temperature, increase skin blood flow and induce the release of vasodilator neuropeptides and growth factors. These changes may be related to the effects of TENS on the tissue repair process. Objective: To assess the effect of high- and low-frequency TENS on angiogenesis and the contraction of acute excisional wounds in rat skin. Methods: Fifty-four young adult male EPM1-Wistar rats were used in the study. An excisional wound was performed on the back of each animal using an 8mm punch. The animals were randomly assigned to three groups: the High-frequency Group (HG: 80 Hz), Low-frequency Group (LG: 5 Hz), and Sham Group (SG: TENS turned off). TENS was delivered on three days consecutives. Pulse duration and current intensity were 200 µs and 15 mA. The length of each TENS session was 60 minutes. Microscopic and macroscopic assessments were performed on 3, 7 and 14 postoperative (PO) days. Hematoxylin-eosin staining was utilized to quantify the neoformed blood vessels. Photographs were taken to determine the percentage of wound contraction. After assessment, the animals were painlessly sacrificed. Results: There were increases in angiogenesis in the HG on the 3 PO day, and in the LG on the 14 PO day. No significant differences in wound contraction were found between the groups on the different PO days. Conclusion: High frequency TENS improved angiogenesis, and neither frequency of TENS had any influence on the contraction of acute excisional wounds in rat skin.
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Affiliation(s)
- Aline Fernanda Perez Machado
- Universidade Cidade de São Paulo, Brazil; Universidade Paulista, Brazil; Universidade Federal de São Paulo, Brazil
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Zhang B, Zhu Y, Jiang C, Li C, Li Y, Bai Y, Wu Y. Effects of Transcutaneous Electrical Acupoint Stimulation on Motor Functions and Self-Care Ability in Children with Cerebral Palsy. J Altern Complement Med 2017; 24:55-61. [PMID: 28767271 DOI: 10.1089/acm.2016.0111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES To observe the effects of transcutaneous electrical acupoint stimulation (TEAS) in improving motor functions and self-care abilities in children with cerebral palsy in their early childhood. DESIGN A preliminary, prospective, cohort study. SETTINGS/LOCATION Multicenter. SUBJECTS Children aged 2-6 years old. INTERVENTIONS Twenty-three children were included in the study and randomly assigned to a control group ([CG] N = 11) or a therapeutic group ([TG] N = 12). In the TG, children were treated with TEAS (Shousanli [LI10] and Waiguan [SJ5]) plus the exercise therapy, while in the control group, they were treated with sham TEAS plus exercise therapy. Therapies were performed five days per week for eight weeks. OUTCOME MEASURES The Gross Motor Function Measure (GMFM) and the Functional Independent Measurement for children (WeeFIM) were used to evaluate motor functions and self-care abilities before and after the therapies. RESULTS Greater improvements were observed in the TG concerning all the measurements, although without statistical differences. The increments of the GMFM score and the WeeFIM motor, self-care and total scores were 36.08 ± 18.34 (26%), 16.17 ± 8.21 (33%), 7.67 ± 3.42 (40%) and 20.33 ± 10.08 (28%) in the TG, while 22.73 ± 16.54 (17%), 9.09 ± 9.43 (19%), 5.64 ± 6.73 (29%) and 12.82 ± 11.77 (18%) in the CG, respectively. No statistically significant correlations were shown between functional improvements and the demographics in the TG or the CG. The GMFM improvement was not statistically correlated with the improvements of the WeeFIM motor, self-care or total scores. However, the WeeFIM motor, self-care and total score were significantly positively correlated with one another in both groups (P < 0.01). No adverse effect was recorded during the study. CONCLUSION TEAS may be effective in improving motor functions and self-care abilities in children with cerebral palsy, in addition to conventional exercise therapy. Larger samples are required to confirm the efficacies.
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Affiliation(s)
- Bei Zhang
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University , Shanghai, People's Republic of China
| | - Yulan Zhu
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University , Shanghai, People's Republic of China
| | - Congyu Jiang
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University , Shanghai, People's Republic of China
| | - Ce Li
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University , Shanghai, People's Republic of China
| | - Yingying Li
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University , Shanghai, People's Republic of China
| | - Yulong Bai
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University , Shanghai, People's Republic of China
| | - Yi Wu
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University , Shanghai, People's Republic of China
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Almeida TCDC, Figueiredo FWDS, Barbosa Filho VC, de Abreu LC, Fonseca FLA, Adami F. Effects of transcutaneous electrical nerve stimulation (TENS) on proinflammatory cytokines: protocol for systematic review. Syst Rev 2017; 6:139. [PMID: 28697739 PMCID: PMC5505047 DOI: 10.1186/s13643-017-0532-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 06/22/2017] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Pain reduction can be achieved by lowering proinflammatory cytokine levels in the blood. Transcutaneous electrical nerve stimulation (TENS) is a non-invasive physiotherapeutic resource for pain management, but evidence on the effectiveness of this device at reducing proinflammatory cytokines in the blood is unclear. This study systematically reviews the literature on the effect of TENS on proinflammatory cytokines. METHODS A systematic review protocol was developed based on searches of articles in six electronic databases and references of retrieved articles, contact with authors, and repositories of clinical trials. Eligibility criteria: publication in peer-reviewed journals, randomized clinical trials, use of TENS in the experimental group, and pre- and post-measurements of proinflammatory cytokines in the blood. Selection of the studies and extraction of the data will be carried out by two reviewers independently. Characteristics of the study, participants, interventions and outcomes were extracted and described. Assessments were performed on the risk of bias, level of evidence and the size of the intervention effect in the studies, according to GRADE guidelines and the Cochrane Handbook for Systematic Reviews. Clinical and statistical assessments compared the effects of the interventions (meta-analysis), taking into consideration any influencing characteristics of the studies (e.g., methods and application sites). DISCUSSION We anticipate that this review will strengthen evidence-based knowledge of the effect of TENS on proinflammatory cytokines and, as a result, direct new studies to benefit patients with specific pathologies. SYSTEMATIC REVIEW REGISTRATION PROSPERO, CRD42017060379 .
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Affiliation(s)
- Tábata Cristina do Carmo Almeida
- Faculdade de Medicina do ABC (FMABC), Laboratório de Epidemiologia e Análise de dados (ABC Medical School), Av. Lauro Gomes, 2000, Vila Sacadura Cabral, CEP: 09060-870 Santo André, SP Brazil
| | - Francisco Winter dos Santos Figueiredo
- Faculdade de Medicina do ABC (FMABC), Laboratório de Epidemiologia e Análise de dados (ABC Medical School), Av. Lauro Gomes, 2000, Vila Sacadura Cabral, CEP: 09060-870 Santo André, SP Brazil
| | - Valter Cordeiro Barbosa Filho
- Centre in Physical Activity and Health. Department of Physical Education, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Luiz Carlos de Abreu
- Faculdade de Medicina do ABC (FMABC), Laboratório de Delineamento de Estudos e Escrita Científica (ABC Medical School), Av. Lauro Gomes, 2000, Vila Sacadura Cabral, CEP: 09060-870 Santo André, SP Brazil
| | - Fernando Luiz Affonso Fonseca
- Faculdade de Medicina do ABC (FMABC), Laboratório de Análises Clínicas (ABC Medical School), Av. Lauro Gomes, 2000, Vila Sacadura Cabral, CEP: 09060-870 Santo André, SP Brazil
| | - Fernando Adami
- Faculdade de Medicina do ABC (FMABC), Laboratório de Epidemiologia e Análise de dados (ABC Medical School), Av. Lauro Gomes, 2000, Vila Sacadura Cabral, CEP: 09060-870 Santo André, SP Brazil
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Berksoy Hayta S, Durmuş K, Altuntaş EE, Yildiz E, Hisarciklıo M, Akyol M. The reduction in inflammation and impairment in wound healing by using strontium chloride hexahydrate. Cutan Ocul Toxicol 2017; 37:24-28. [PMID: 28468507 DOI: 10.1080/15569527.2017.1326497] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Numerous growth factors, cytokine, mitogen and chemotactic factors are involved in wound healing. Even though inflammation is important for the stimulation of proliferative phase, excessive inflammation also causes impairment in wound healing. Strontium salts suppress keratinocyte-induced TNF-alpha and interleukin-1 and interleukin-6 in in vitro cultures. This study was conducted to determine the effects of administration of topical strontium chloride hexahydrate on wound healing through TNF-alpha and TGF-beta in surgical wound healing model of in-vivo rat skin. MATERIAL AND METHODS Twenty-four rats were used in the study. After approximately 2 cm cutaneous-subcutaneous incision was horizontally carried out on the mid-neckline of the rats, the incision was again closed using 2.0 vicryl. The rats were assigned into three groups including eight rats in each group. Placebo emollient ointment and also the ointments, which were containing 5% and 10% strontium chloride hexahydrate and were prepared at the same base with placebo ointment, were administered to the groups by a blind executor twice a day for a week. At the end of seventh day, the rats were sacrificed and cutaneous and subcutaneous tissue of their wound site was resected for histopathological examination. Scoring of histopathological wound healing and scoring of tissue TNF-alpha and TGF-beta level with immunohistochemical staining were performed. RESULTS The groups, to which both 5% and 10% strontium chloride hexahydrate was administered, had lower immunohistochemical TNF-alpha levels and histopathological wound scores compared to controls, which was statistically significant (p < 0.05). CONCLUSION Strontium chloride hexahydrate can lead to impairment in wound healing by suppressing inflammation through TNF-alpha.
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Affiliation(s)
| | - Kasim Durmuş
- b Department of Otolaryngology, Faculty of Medicine , and
| | | | - Esin Yildiz
- c Department of Pathology, Faculty of Medicine , Cumhuriyet University , >Sivas > , Turkey
| | | | - Melih Akyol
- a Deparment of Dermatology, Faculty of Medicine
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Abstract
New developments in accelerating wound healing can have immense beneficial socioeconomic impact. The wound healing process is a highly orchestrated series of mechanisms where a multitude of cells and biological cascades are involved. The skin battery and current of injury mechanisms have become topics of interest for their influence in chronic wounds. Electrostimulation therapy of wounds has shown to be a promising treatment option with no-device-related adverse effects. This review presents an overview of the understanding and use of applied electrical current in various aspects of wound healing. Rapid clinical translation of the evolving understanding of biomolecular mechanisms underlying the effects of electrical simulation on wound healing would positively impact upon enhancing patient’s quality of life.
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Affiliation(s)
- Jerome Hunckler
- UCL Division of Surgery and Interventional Sciences, Faculty of Medical Sciences, University College London, London, UK
| | - Achala de Mel
- UCL Division of Surgery and Interventional Sciences, Faculty of Medical Sciences, University College London, London, UK
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Ashrafi M, Alonso-Rasgado T, Baguneid M, Bayat A. The efficacy of electrical stimulation in experimentally induced cutaneous wounds in animals. Vet Dermatol 2016; 27:235-e57. [DOI: 10.1111/vde.12328] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2016] [Indexed: 12/01/2022]
Affiliation(s)
- Mohammed Ashrafi
- Plastic and Reconstructive Surgery Research; Centre for Dermatological Research; Institute of Inflammation and Repair; University of Manchester; Oxford Road Manchester M13 9PT UK
| | - Teresa Alonso-Rasgado
- Bioengineering Group; School of Materials; University of Manchester; Oxford Road Manchester M13 9PT UK
| | - Mohamed Baguneid
- Wythenshawe Hospital; University Hospital South Manchester NHS Foundation Trust; Southmoor Road Manchester M23 9LT UK
| | - Ardeshir Bayat
- Plastic and Reconstructive Surgery Research; Centre for Dermatological Research; Institute of Inflammation and Repair; University of Manchester; Oxford Road Manchester M13 9PT UK
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Curbing Inflammation in Skin Wound Healing: A Review. Int J Inflam 2015; 2015:316235. [PMID: 26356299 PMCID: PMC4556061 DOI: 10.1155/2015/316235] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 07/24/2015] [Accepted: 07/27/2015] [Indexed: 12/15/2022] Open
Abstract
Wound healing is a complex regulated process that results in skin scar formation in postnatal mammals. Chronic wounds are major medical problems that can confer devastating consequences. Currently, there are no treatments to prevent scarring. In the early fetus wounds heal without scarring and the healing process is characterized by relatively less inflammation compared to adults; therefore, research aimed at reducing the inflammatory process related to wound healing might speed healing and improve the final scar appearance.
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Ojeh N, Rose A, Jackman S, Applewhaite M, Webster V. Feasibility of an electrostimulation system treatment for wound healing: a case series of patients with chronic ulcers in Barbados. Int Wound J 2015; 13:1180-1189. [PMID: 25756595 DOI: 10.1111/iwj.12438] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 02/05/2015] [Accepted: 02/08/2015] [Indexed: 12/21/2022] Open
Abstract
Major advances have been made in the development of new therapies for chronic wounds. Fenzian™, an electrostimulation system (ES), has been clinically used for a variety of conditions. The ES was recently tested in the Barbadian population for tolerability and acceptability by asthma patients, with encouraging results. Barbados has an estimated 170 people with diabetes having some form of lower-extremity amputation annually. Here, we describe a case series of 21 chronic ulcer patients with diabetes recruited as inpatients (n = 10) and outpatients (n = 11) in a pilot study to evaluate the feasibility and acceptability of ES in the Barbadian population. Results showed statistically significant improvement among those in the inpatient- versus outpatient-recruited group for wound perimeter (P = 0·04), wound surface area (P = 0·03) and wound volume (P = 0·08). We also demonstrate that the improvement continued after cessation of ES treatment. Participants reported increased levels of pain at the end of treatment, and there was no statistically significant change in the reported quality of life. Our results showed greater improvements in reduction of ulcer size for participants from the inpatient- versus outpatient-recruited group.
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Affiliation(s)
- Nkemcho Ojeh
- Faculty of Medical Sciences, The University of the West Indies, Cave Hill, Barbados, West Indies
| | - Angela Rose
- Chronic Disease Research Centre, Tropical Medicine Research Institute, The University of the West Indies, Cave Hill, Barbados, West Indies
| | - Selma Jackman
- Department of Surgery, Queen Elizabeth Hospital, St. Michael, Barbados, West Indies
| | | | - Veronica Webster
- Nursing Services, Queen Elizabeth Hospital, St. Michael, Barbados, West Indies
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Lisboa MRP, Gondim DV, Ervolino E, Vale ML, Frota NPR, Nunes NLT, Mariguela VC, Taba M, Messora MR, Furlaneto FAC. Effects of electroacupuncture on experimental periodontitis in rats. J Periodontol 2015; 86:801-11. [PMID: 25741581 DOI: 10.1902/jop.2015.140630] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Acupuncture has shown the capability of modulating the immuno-inflammatory response of the host. This study aims to evaluate the effects of electroacupuncture (EA) on ligature-induced periodontitis in rats. METHODS Thirty-two animals were divided into four groups: 1) control; 2) experimental periodontitis (EP); 3) sham-treated (EP/EA-sham); and 4) treated with EA (EP/EA). For the EP groups, a ligature was placed around the right mandibular first molars at day 1. Sessions of EA or EA-sham were assigned every other day. For EA treatment, large intestine meridian points LI4 and LI11 and stomach meridian points ST36 and ST44 were used. EA-sham was performed in off-meridian points. Animals were euthanized at day 11. Histomorphometric and microtomographic analyses were performed. Immunolabeling patterns for the receptor activator of nuclear factor κB ligand (RANKL), osteoprotegerin (OPG), and tartrate-resistant acid phosphatase (TRAP) were assessed. Expressions of interleukin (IL)-1β, matrix metalloproteinase (MMP)-8, IL-6, and cyclooxygenase (COX)-2 messenger RNAs (mRNAs) were evaluated by quantitative reverse transcription-polymerase chain reaction. Data were analyzed statistically (P <0.05, analysis of variance). RESULTS Histomorphometric and microtomographic analyses demonstrated that group EP/EA presented reduced alveolar bone loss when compared to group EP (P <0.05). Reduced RANKL immunolabeling and fewer TRAP-positive multinucleated cells were observed in the EA-treated group in relation to group EP. No differences were observed in OPG expression among groups. EA treatment decreased the genic expression of IL-1β and MMP-8 (P <0.05), increased the mRNA expression of IL-6 (P <0.05), and did not modify the genic expression of COX-2 in animals with EP (P >0.05). CONCLUSION It can be concluded that EA reduced periodontal tissue breakdown and the expression of some proinflammatory mediators and a proresorptive factor in EP in rats.
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Affiliation(s)
- Mario R P Lisboa
- *Department of Clinical Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Delane V Gondim
- †Department of Morphology, Faculty of Medicine, Federal University of Ceará
| | - Edilson Ervolino
- ‡Department of Basic Sciences, Division of Histology, Dental School of Aracatuba, São Paulo State University, Aracatuba, São Paulo, Brazil
| | - Mariana L Vale
- §Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará
| | - Nicolly P R Frota
- ‖Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirao Preto School of Dentistry, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Nara L T Nunes
- *Department of Clinical Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Viviane C Mariguela
- ¶Department of Veterinary Pathology, São Paulo State University, Jaboticabal, São Paulo, Brazil
| | - Mario Taba
- ‖Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirao Preto School of Dentistry, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Michel R Messora
- ‖Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirao Preto School of Dentistry, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Flávia A C Furlaneto
- ‖Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirao Preto School of Dentistry, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
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