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Tognoloni A, Pellegrini M, Di Salvo A, Sforna M, Cagiola M, Seccaroni M, Nannarone S, Beccati F, Pressanto MC, Di Meo A, Chiaradia E. Cytotoxicity of local anaesthetics and protective effects of platelet rich plasma on equine tenocytes: An in vitro study. Vet J 2024; 306:106159. [PMID: 38849026 DOI: 10.1016/j.tvjl.2024.106159] [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: 01/31/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Local anaesthetics (LAs) can have detrimental effects on rat, bovine, canine, and human tendon tissues and cells. Currently, there has been no available data on the impact of these drugs on equine tenocytes. Even if LA injection for managing painful tendon conditions in horses is limited, it is usually used via intra-articular, intrasynovial, perineural, and intrathecal as well as for lameness examinations. In this in vitro study, the cytotoxic effects of LAs, including lidocaine, mepivacaine, and bupivacaine on equine tenocytes, in the presence and absence of platelet rich plasma (PRP), were investigated. PRP accelerates tissue healing and can exert cytoprotective effects on different cell types exposed to different stressful conditions, including drugs. Results indicated that the exposure to LAs significantly reduced tenocytes viability in dose- and time-dependent manners while PRP was able to counteract their cytotoxic effects. Furthermore, microscopy and flow cytometry analyses revealed apoptosis and necrosis in equine tenocytes exposed to these drugs, that were both reduced when PRP was in the medium. These findings highlight the importance of considering the tenocyte toxicity associated with intrathecal and intraneural LA injections, as they might affect tenocytes or reduce the efficacy of associated therapies. Moreover, this study also highlights the protective effects of PRP, which could make LA injections safer.
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Affiliation(s)
- Alessia Tognoloni
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia 06126, Italy
| | - Martina Pellegrini
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati" (IZSUM), Perugia, Italy
| | - Alessandra Di Salvo
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia 06126, Italy
| | - Monica Sforna
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia 06126, Italy
| | - Monica Cagiola
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati" (IZSUM), Perugia, Italy
| | - Matteo Seccaroni
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia 06126, Italy
| | - Sara Nannarone
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia 06126, Italy; Sport Horse Research Center, University of Perugia, Department of Veterinary Medicine, Perugia, Italy
| | - Francesca Beccati
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia 06126, Italy; Sport Horse Research Center, University of Perugia, Department of Veterinary Medicine, Perugia, Italy
| | - Maria Chiara Pressanto
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia 06126, Italy; Cotts Equine Hospital, Robeston Wathen, Narberth, Pembrokeshire, UK
| | - Antonio Di Meo
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia 06126, Italy
| | - Elisabetta Chiaradia
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia 06126, Italy; Sport Horse Research Center, University of Perugia, Department of Veterinary Medicine, Perugia, Italy.
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Zhang J, Li X, Tian Y, Zou J, Gan D, Deng D, Jiao C, Yin Y, Tian B, Wu R, Chen F, He X. Harnessing Mechanical Stress with Viscoelastic Biomaterials for Periodontal Ligament Regeneration. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309562. [PMID: 38460171 PMCID: PMC11095218 DOI: 10.1002/advs.202309562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/15/2024] [Indexed: 03/11/2024]
Abstract
The viscoelasticity of mechanically sensitive tissues such as periodontal ligaments (PDLs) is key in maintaining mechanical homeostasis. Unfortunately, PDLs easily lose viscoelasticity (e.g., stress relaxation) during periodontitis or dental trauma, which disrupt cell-extracellular matrix (ECM) interactions and accelerates tissue damage. Here, Pluronic F127 diacrylate (F127DA) hydrogels with PDL-matched stress relaxation rates and high elastic moduli are developed. The hydrogel viscoelasticity is modulated without chemical cross-linking by controlling precursor concentrations. Under cytomechanical loading, F127DA hydrogels with fast relaxation rates significantly improved the fibrogenic differentiation potential of PDL stem cells (PDLSCs), while cells cultured on F127DA hydrogels with various stress relaxation rates exhibited similar fibrogenic differentiation potentials with limited cell spreading and traction forces under static conditions. Mechanically, faster-relaxing F127DA hydrogels leveraged cytomechanical loading to activate PDLSC mechanotransduction by upregulating integrin-focal adhesion kinase pathway and thus cytoskeletal rearrangement, reinforcing cell-ECM interactions. In vivo experiments confirm that faster-relaxing F127DA hydrogels significantly promoted PDL repair and reduced abnormal healing (e.g., root resorption and ankyloses) in delayed replantation of avulsed teeth. This study firstly investigated how matrix nonlinear viscoelasticity influences the fibrogenesis of PDLSCs under mechanical stimuli, and it reveals the underlying mechanobiology, which suggests novel strategies for PDL regeneration.
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Affiliation(s)
- Jiu‐Jiu Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Xuan Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Yi Tian
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Jie‐Kang Zou
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Dian Gan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Dao‐Kun Deng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Chen Jiao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Yuan Yin
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Bei‐Min Tian
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Rui‐Xin Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Fa‐Ming Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
| | - Xiao‐Tao He
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical UniversityXi'an710032China
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Guillaume VGJ, Lanckohr LS, Lippold EF, Beier JP, Ruhl T. Effects of epinephrine, lidocaine, and prilocaine on viability and differentiation capacity of human adipose stem cells. J Plast Reconstr Aesthet Surg 2023; 87:408-415. [PMID: 37939646 DOI: 10.1016/j.bjps.2023.10.104] [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: 07/29/2023] [Revised: 10/12/2023] [Accepted: 10/18/2023] [Indexed: 11/10/2023]
Abstract
INTRODUCTION Local anesthetics (LAs) are routinely administered in plastic and reconstructive surgery, e.g., as tumescent anesthesia adjunct in liposuction. Historically, these substances were assumed to act cytotoxically. Thus, the application of LA was avoided when handling adipose stem cells (ASCs). We recently determined that most LAs are not cytotoxic when ASCs are exposed to concentrations used for tumescent liposuction. However, there is limited information when combining LA with epinephrine and about the effects of prilocaine on ASCs. METHODS We analyzed the effects of prilocaine or lidocaine in co-exposure with epinephrine on the viability of primary human ASCs, i.e., proliferation, metabolic activity, and cytotoxicity, using crystal violet-staining, PrestoBlue®-, and WST-1 assay. We quantified the impact of short-term incubation of lidocaine and epinephrine on the differentiation of ASCs into the adipogenic, chondrogenic, and osteogenic lineage. RESULTS After 2 h, prilocaine (10 mM) significantly reduced metabolic activity and cell numbers, whereas lidocaine only inhibited metabolic activity. After 6 h, prilocaine (10 mM) and lidocaine significantly decreased metabolic activity as well as cell numbers. The application of high concentrations of epinephrine did not affect cell numbers but diminished metabolic activity. Combining lidocaine with epinephrine had no additional cytotoxic effect. Differentiation into the chondrogenic lineage was significantly inhibited by epinephrine. CONCLUSIONS Deducing from our data, neither lidocaine combined with epinephrine nor prilocaine has a cytotoxic impact on ASCs in vitro at concentrations equivalent to those in tumescent anesthesia and has no long-lasting effect on the differentiation capacity of ASCs into the osteogenic and adipogenic lineage.
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Affiliation(s)
- Vincent G J Guillaume
- Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, NRW, Germany.
| | - Laura S Lanckohr
- Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, NRW, Germany
| | - Ella F Lippold
- Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, NRW, Germany
| | - Justus P Beier
- Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, NRW, Germany
| | - Tim Ruhl
- Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, NRW, Germany
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Guillaume VGJ, Lippold EF, Beier JP, Ruhl T. Comprehensive Analysis of Local Anesthetics Affecting Adipose Stem Cells In Vitro. Plast Reconstr Surg 2023; 152:850e-861e. [PMID: 36988627 DOI: 10.1097/prs.0000000000010460] [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: 03/30/2023]
Abstract
BACKGROUND Adipose stem cells (ASCs) hold a great regenerative capacity because of their differentiation capability and their secretory activity. Thus, ASC survival is of great significance during perioperative harvesting. Various local anesthetics are commonly applied during fat grafting procedures. These substances are known to impair cellular viability, which would affect graft survival and final outcomes, but the exact extent of their impact on ASC biology is unknown. METHODS The authors analyzed the short- and long-term effects of lidocaine, mepivacaine, ropivacaine, and bupivacaine at increasing concentrations (0.1 to 10 mM) on primary human ASC proliferation and metabolic activity. Trilinear differentiation was assessed by oil red O stain (adipogenesis), safranin O (chondrogenesis), and cresolphthalein (osteogenesis) labeling. In supernatants, cytokine [interleukin (IL)-6/IL-8, vascular endothelial growth factor, hepatocyte growth factor] secretion was analyzed by enzyme-linked immunosorbent assay. RESULTS Bupivacaine at greater than 100 µM demonstrated the strongest anti proliferative effects, whereas lidocaine and ropivacaine did not affect cell numbers. Mepivacaine evoked reciprocal results regarding cell count at greater than 1 mM. Each compound impaired trilinear differentiation. Secretion of hepatocyte growth factor and IL-8 was reduced significantly by local anesthetic exposure; levels were restored after substances were washed out. CONCLUSIONS In vitro data show that lidocaine, mepivacaine, and ropivacaine could be applied at concentrations of 1 to 10 mM without affecting ASC survival. In contrast, bupivacaine at concentrations greater than 100 µM should be administered with great caution. The differentiation of ASCs and the ASC's secretome might already be decreased by each local anesthetic at 1 mM. CLINICAL RELEVANCE STATEMENT The authors' experimental data can be of great significance to the clinical practice, as local anesthetics are routinely administered during liposuction as a tumescent anesthesia adjunct. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, V.
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Affiliation(s)
- Vincent G J Guillaume
- From the Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen
| | - Ella F Lippold
- From the Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen
| | - Justus P Beier
- From the Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen
| | - Tim Ruhl
- From the Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen
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Lee SH, Kim CH, Yoon JY, Choi EJ, Kim MK, Yoon JU, Kim HY, Kim EJ. Lidocaine intensifies the anti-osteogenic effect on inflammation-induced human dental pulp stem cells via mitogen-activated protein kinase inhibition. J Dent Sci 2022. [DOI: 10.1016/j.jds.2022.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Zhang A, Wang D, Diwan S, Lin CP, Calodney A, Rosenthal R, Chang Chien GC. Effects of local anesthetics and contrast agents on musculoskeletal regenerative medicine procedures. Regen Med 2022; 17:845-853. [PMID: 36069006 DOI: 10.2217/rme-2021-0176] [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: 11/21/2022] Open
Abstract
In regenerative medicine, cells, tissues and organs are often replaced, engineered or regrown in order to restore their function after they have been damaged or lost. Local anesthetics, corticosteroids and contrast agents are commonly employed for both diagnostic and therapeutic objectives in interventional pain and musculoskeletal treatments for regenerative medicine. There is growing evidence that routine injectables promote catabolism and disease processes. Thus, understanding the effects of these compounds on regenerative medicine injectates and target tissues such as tenocytes, chondrocytes, nucleus pulposus and ligamentous tissue is critical. This review includes the current research on the effects of local anesthetics and contrast agents, as well as their use and recommendations in regenerative medicine operations.
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Affiliation(s)
- Allan Zhang
- Department of Radiology, University of Connecticut Health Center, Farmington, CT, USA
| | - Daniel Wang
- Kansas City University, Kansas City, MO 64106, USA
| | | | - Chih-Peng Lin
- Department of Anesthesiology, National Taiwan University Hospital & National Taiwan University College of Medicine, Taipei, 10048, Taiwan
| | | | | | - George C Chang Chien
- Pain Management, Ventura County Medical Center, Ventura, CA 93003, USA.,GCC Institute Regenerative Medicine, Newport Beach, CA 92606, USA
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Chamaraux-Tran TN, Muller M, Pottecher J, Diemunsch PA, Tomasetto C, Namer IJ, Dali-Youcef N. Metabolomic Impact of Lidocaine on a Triple Negative Breast Cancer Cell Line. Front Pharmacol 2022; 13:821779. [PMID: 35273500 PMCID: PMC8902240 DOI: 10.3389/fphar.2022.821779] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/24/2022] [Indexed: 12/12/2022] Open
Abstract
Background: Metabolomics and onco-anesthesia are two emerging research fields in oncology. Metabolomics (metabolites analysis) is a new diagnostic and prognostic tool that can also be used for predicting the therapeutic or toxic responses to anticancer treatments. Onco-anesthesia studies assess the impact of anesthesia on disease-free and overall survival after cancer surgery. It has been shown that local anesthetics (LA), particularly lidocaine (LIDO), exert antitumor properties both in vitro and in vivo and may alter the biologic fingerprints of cancer cells. As LA are known to impair mitochondrial bioenergetics and byproducts, the aim of the present study was to assess the impact of LIDO on metabolomic profile of a breast cancer cell line. Methods: Breast cancer MDA-MB-231 cells were exposed for 4 h to 0.5 mM LIDO or vehicle (n = 4). The metabolomic fingerprint was characterized by high resolution magic angle spinning NMR spectroscopy (HRMAS). The multivariate technique using the Algorithm to Determine Expected Metabolite Level Alteration (ADEMA) (Cicek et al., PLoS Comput. Biol., 2013, 9, e1002859), based on mutual information to identify expected metabolite level changes with respect to a specific condition, was used to determine the metabolites variations caused by LIDO. Results: LIDO modulates cell metabolites levels. Several pathways, including glutaminolysis, choline, phosphocholine and total choline syntheses were significantly downregulated in the LIDO group. Discussion: This is the first study assessing the impact of LIDO on metabolomic fingerprint of breast cancer cells. Among pathways downregulated by LIDO, many metabolites are reported to be associated with adverse prognosis when present at a high titer in breast cancer patients. These results fit with the antitumor properties of LIDO and suggest its impact on metabolomics profile of cancer cells. These effects of LIDO are of clinical significance because it is widely used for local anesthesia with cutaneous infiltration during percutaneous tumor biopsy. Future in vitro and preclinical studies are necessary to assess whether metabolomics analysis requires modification of local anesthetic techniques during tumor biopsy.
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Affiliation(s)
- Thiên-Nga Chamaraux-Tran
- Service d'anesthésie-réanimation et Médecine Périopératoire, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire Illkirch, Illkirch, France.,Centre National de la Recherche Scientifique, UMR 7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U1258, Illkirch, France.,ER 3072, Mitochondrie Stress Oxydant et Protection Musculaire, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Marie Muller
- Service d'anesthésie-réanimation et Médecine Périopératoire, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Université de Strasbourg, Faculté de Médecine, Strasbourg, France
| | - Julien Pottecher
- Service d'anesthésie-réanimation et Médecine Périopératoire, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,ER 3072, Mitochondrie Stress Oxydant et Protection Musculaire, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France.,Université de Strasbourg, Faculté de Médecine, Strasbourg, France
| | - Pierre A Diemunsch
- Service d'anesthésie-réanimation et Médecine Périopératoire, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Catherine Tomasetto
- Institut de Génétique et de Biologie Moléculaire et Cellulaire Illkirch, Illkirch, France.,Centre National de la Recherche Scientifique, UMR 7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U1258, Illkirch, France
| | - Izzie-Jacques Namer
- Université de Strasbourg, Faculté de Médecine, Strasbourg, France.,MNMS-Platform, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Service de Médecine Nucléaire et d'Imagerie Moléculaire, Institut de Cancérologie Strasbourg Europe, Strasbourg, France.,ICube, Université de Strasbourg/CNRS, UMR 7357, Strasbourg, France
| | - Nassim Dali-Youcef
- Institut de Génétique et de Biologie Moléculaire et Cellulaire Illkirch, Illkirch, France.,Centre National de la Recherche Scientifique, UMR 7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U1258, Illkirch, France.,Université de Strasbourg, Faculté de Médecine, Strasbourg, France.,Laboratoire de Biochimie et Biologie Moléculaire, Pôle de Biologie, Hôpitaux Universitaires de Strasbourg, Nouvel Hôpital Civil, 1 Place de l'hôpital, Strasbourg, France
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Choi W, Ryu H, Fuwad A, Goh S, Zhou C, Shim J, Takagi M, Kwon S, Kim SM, Jeon TJ. Quantitative Analysis of the Membrane Affinity of Local Anesthetics Using a Model Cell Membrane. MEMBRANES 2021; 11:membranes11080579. [PMID: 34436342 PMCID: PMC8401255 DOI: 10.3390/membranes11080579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/17/2021] [Accepted: 07/27/2021] [Indexed: 11/23/2022]
Abstract
Local anesthesia is a drug that penetrates the nerve cell membrane and binds to the voltage gate sodium channel, inhibiting the membrane potential and neurotransmission. It is mainly used in clinical uses to address the pain of surgical procedures in the local area. Local anesthetics (LAs), however, can be incorporated into the membrane, reducing the thermal stability of the membrane as well as altering membrane properties such as fluidity, permeability, and lipid packing order. The effects of LAs on the membrane are not yet fully understood, despite a number of previous studies. In particular, it is necessary to analyze which is the more dominant factor, the membrane affinity or the structural perturbation of the membrane. To analyze the effects of LAs on the cell membrane and compare the results with those from model membranes, morphological analysis and 50% inhibitory concentration (IC50) measurement of CCD-1064sk (fibroblast, human skin) membranes were carried out for lidocaine (LDC) and tetracaine (TTC), the most popular LAs in clinical use. Furthermore, the membrane affinity of the LAs was quantitatively analyzed using a colorimetric polydiacetylene assay, where the color shift represents their distribution in the membrane. Further, to confirm the membrane affinity and structural effects of the membranes, we performed an electrophysiological study using a model protein (gramicidin A, gA) and measured the channel lifetime of the model protein on the free-standing lipid bilayer according to the concentration of each LA. Our results show that when LAs interact with cell membranes, membrane affinity is a more dominant factor than steric or conformational effects of the membrane.
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Affiliation(s)
- Wanjae Choi
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (W.C.); (H.R.); (S.G.); (C.Z.); (S.K.)
| | - Hyunil Ryu
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (W.C.); (H.R.); (S.G.); (C.Z.); (S.K.)
| | - Ahmed Fuwad
- Department of Mechanical Engineering, Inha University, Incheon 22212, Korea;
| | - Seulmini Goh
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (W.C.); (H.R.); (S.G.); (C.Z.); (S.K.)
| | - Chaoge Zhou
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (W.C.); (H.R.); (S.G.); (C.Z.); (S.K.)
| | - Jiwook Shim
- Department of Biomedical Engineering, Rowan University, Glassboro, NJ 08028, USA;
| | - Masahiro Takagi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923–1292, Ishikawa, Japan;
| | - Soonjo Kwon
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (W.C.); (H.R.); (S.G.); (C.Z.); (S.K.)
- Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Korea
| | - Sun Min Kim
- Department of Mechanical Engineering, Inha University, Incheon 22212, Korea;
- Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Korea
- Correspondence: (S.M.K.); (T.-J.J.); Tel.: +82-32-860-7328 (S.M.K.); +82-32-860-7511 (T.-J.J.)
| | - Tae-Joon Jeon
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (W.C.); (H.R.); (S.G.); (C.Z.); (S.K.)
- Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Korea
- Correspondence: (S.M.K.); (T.-J.J.); Tel.: +82-32-860-7328 (S.M.K.); +82-32-860-7511 (T.-J.J.)
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