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Kim Y, Park IH, Shin J, Choi J, Jeon C, Jeon S, Shin JS, Jung H. Sublingual Dissolving Microneedle (SLDMN)-Based Vaccine for Inducing Mucosal Immunity against SARS-CoV-2. Adv Healthc Mater 2023; 12:e2300889. [PMID: 37337388 DOI: 10.1002/adhm.202300889] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/07/2023] [Indexed: 06/21/2023]
Abstract
The coronavirus pandemic has accelerated the development of next-generation vaccination technology to combat future pandemic outbreaks. Mucosal vaccination effectively protects the mucosal surfaces, the primary sites of viral entry, by inducing the secretion of immunoglobulin A (IgA) and humoral IgG. Here, a dissolving microneedle (DMN) is adopted as a mucosal vaccine delivery platform to directly penetrate the sublingual site, which is rich in antigen-presenting cells (APCs) and lymphoid tissues. The sublingual dissolving microneedle (SLDMN) vaccination platform comprised a micropillar-based compartment and a 3D-printed SLDMN applicator as a substitute for the DMN patch. The penetration efficacy of SLDMNs is assessed using in vitro optical coherence tomography (OCT) and in vivo histological analysis. The efficacy of SLDMN is also evaluated in a vaccine form using the recombinant spike (S1) protein of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Furthermore, SLDMN is used to challenge transgenic mice expressing human angiotensin-converting enzyme 2 (hACE2) receptors. Its effects are evaluated on antibody production, survival rate, and inflammation attenuation after infection compared to the intramuscular (IM) injections. Overall, SLDMN effectively induced mucosal immunity via IgA secretion, attenuated lung inflammation, and lowered the levels of cytokines and chemokines, which may prevent the "cytokine storm" after SARS-CoV-2 infection.
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Affiliation(s)
- Youseong Kim
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - In Ho Park
- Institute of Immunology and Immunological Diseases, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jiwoo Shin
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jaibyung Choi
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Chansol Jeon
- JUVIC, 208Ho, 272, Digital-ro, Guro-gu, Seoul, 08389, Republic of Korea
| | - Seonghun Jeon
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jeon-Soo Shin
- Department of Microbiology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Institute of Immunology and Immunological Diseases, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Hyungil Jung
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- JUVIC, 208Ho, 272, Digital-ro, Guro-gu, Seoul, 08389, Republic of Korea
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Hao M, Wang D, Duan M, Kan S, Li S, Wu H, Xiang J, Liu W. Functional drug-delivery hydrogels for oral and maxillofacial wound healing. Front Bioeng Biotechnol 2023; 11:1241660. [PMID: 37600316 PMCID: PMC10434880 DOI: 10.3389/fbioe.2023.1241660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 07/21/2023] [Indexed: 08/22/2023] Open
Abstract
The repair process for oral and maxillofacial injuries involves hemostasis, inflammation, proliferation, and remodeling. Injury repair involves a variety of cells, including platelets, immune cells, fibroblasts, and various cytokines. Rapid and adequate healing of oral and maxillofacial trauma is a major concern to patients. Functional drug-delivery hydrogels play an active role in promoting wound healing and have shown unique advantages in wound dressings. Functional hydrogels promote wound healing through their adhesive, anti-inflammatory, antioxidant, antibacterial, hemostatic, angiogenic, and re-epithelialization-promoting properties, effectively sealing wounds and reducing inflammation. In addition, functional hydrogels can respond to changes in temperature, light, magnetic fields, pH, and reactive oxygen species to release drugs, enabling precise treatment. Furthermore, hydrogels can deliver various cargos that promote healing, including nucleic acids, cytokines, small-molecule drugs, stem cells, exosomes, and nanomaterials. Therefore, functional drug-delivery hydrogels have a positive impact on the healing of oral and maxillofacial injuries. This review describes the oral mucosal structure and healing process and summarizes the currently available responsive hydrogels used to promote wound healing.
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Affiliation(s)
- Ming Hao
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Dongxu Wang
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, China
| | - Mengna Duan
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Shaoning Kan
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Shuangji Li
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Han Wu
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Jingcheng Xiang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Weiwei Liu
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
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Oh MY, Chai YJ, Yu HW, Kim SJ, Choi JY, Lee KE. Transoral endoscopic thyroidectomy vestibular approach as a safe and feasible alternative to open thyroidectomy: a systematic review and meta-analysis. Int J Surg 2023; 109:2467-2477. [PMID: 37161554 PMCID: PMC10442077 DOI: 10.1097/js9.0000000000000444] [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: 03/13/2023] [Accepted: 05/01/2023] [Indexed: 05/11/2023]
Abstract
BACKGROUND Transoral endoscopic thyroidectomy vestibular approach (TOETVA) is a scarless alternative to open thyroidectomy (OT). This systematic review and meta-analysis aimed to synthesize evidence comparing the intraoperative and postoperative outcomes of TOETVA and OT. METHODS A systematic literature search of PubMed, Web of Science, the Cochrane Library, and Google Scholar was performed to identify studies comparing the outcomes of TOETVA and OT published before February 2023. The outcomes of interest were operative time, intraoperative blood loss, hospital stay, postoperative pain, number of central lymph nodes retrieved, number of metastatic central lymph nodes, and incidences of transient and permanent recurrent laryngeal nerve injury, transient and permanent hypocalcemia, hematoma, and infection. RESULTS Thirteen studies published between 2016 and 2022, involving a total of 2889 patients (TOETVA, n =1085; OT, n =1804) were included in this systematic review and meta-analysis. Meta-analysis showed that the TOETVA group had a significantly longer overall operative time (weighted mean difference [WMD] 55.19; 95% CI, 39.15, 71.23; P <0.001), longer hospital stay (WMD, 0.27; 95% CI, 0.14, 0.39; P <0.001), and lower pain scores on postoperative day 1 (WMD, -1.41; 95% CI, -2.79, -0.03; P =0.04) than the OT group. Other intraoperative and postoperative outcomes were not significantly different between the groups. CONCLUSION TOETVA has a similar safety profile to OT with less postoperative pain, making it an appropriate and more cosmetically appealing alternative to OT for select patients.
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Affiliation(s)
- Moon Young Oh
- Department of Surgery, Seoul National University College of Medicine, Seoul Metropolitan Government - Seoul National University Boramae Medical Center
| | - Young Jun Chai
- Department of Surgery, Seoul National University College of Medicine, Seoul Metropolitan Government - Seoul National University Boramae Medical Center
- Transdisciplinary Department of Medicine and Advanced Technology, Seoul National University Hospital
| | - Hyeong Won Yu
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam-si, Korea
| | - Su-Jin Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul
| | - June Young Choi
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam-si, Korea
| | - Kyu Eun Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul
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Widhowaty Santoso A, Sufiawati I. Effectiveness of Photobiomodulation in Reducing Pain of Oral Mucosal Diseases: A Case Series. Int Med Case Rep J 2023; 16:407-417. [PMID: 37465549 PMCID: PMC10351595 DOI: 10.2147/imcrj.s414313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 06/27/2023] [Indexed: 07/20/2023] Open
Abstract
Introduction Pain management becomes important in the treatment of oral mucosal diseases since it can impair the quality of life. Photobiomodulation (PBM) as an alternative therapy, has potency in reducing pain through several mechanisms targeting peripheral nerves in the target tissue. Purpose To discuss the effectiveness of PBM in the management of four cases of oral mucosal diseases. Case Four patients, two females and two males, with an age ranging from 24 to 63 years came to the Oral Medicine Department complaining of painful lesions in their oral cavity. Three cases showed ulceration of the oral mucosa and had been diagnosed with recurrent aphthous stomatitis, recalcitrant chronic ulcer, and non-specific chronic sialadenitis. One patient who complained of intense pain and swelling on the right side of the face was diagnosed with post-herpetic neuralgia (PHN). Case Management PBM was administered in all four cases (976 nm diode laser, three cases with spot size 0.01 cm2, fluency 10 J/cm2, and one case with spot size 0.5 cm2; fluency 3 J/cm2). Visual analog scale (VAS) control was performed before and after the PBM at each visit. The recorded VAS results show a reduction in pain that started at the post-laser time, with VAS before PBM ranging from 5 to 7 and after PBM ranging from 0 to 4. Three patients were given triamcinolone acetonide 0.1%, chlorhexidine gluconate 0.2% mouthwash, petroleum jelly, and multivitamins. One patient was given mefenamic acid and multivitamins. Conclusion PBM can be a useful adjunctive treatment to relieve the pain of oral mucosal diseases due to its ability to reduce pain intensity.
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Affiliation(s)
- Astrid Widhowaty Santoso
- Oral Medicine Residency Program, Faculty of Dentistry, Universitas Padjadjaran, Bandung, Indonesia
| | - Irna Sufiawati
- Oral Medicine Department, Faculty of Dentistry, Universitas Padjadjaran, Bandung, Indonesia
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Siddiqui YD, Nie X, Wang S, Abbasi Y, Park L, Fan X, Thumbigere-Math V, Chung MK. Substance P aggravates ligature-induced periodontitis in mice. Front Immunol 2023; 14:1099017. [PMID: 37122730 PMCID: PMC10140340 DOI: 10.3389/fimmu.2023.1099017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/23/2023] [Indexed: 05/02/2023] Open
Abstract
Periodontitis is one of the most common oral diseases in humans, affecting over 40% of adult Americans. Pain-sensing nerves, or nociceptors, sense local environmental changes and often contain neuropeptides. Recent studies have suggested that nociceptors magnify host response and regulate bone loss in the periodontium. A subset of nociceptors projected to periodontium contains neuropeptides, such as calcitonin gene-related peptide (CGRP) or substance P (SP). However, the specific roles of neuropeptides from nociceptive neural terminals in periodontitis remain to be determined. In this study, we investigated the roles of neuropeptides on host responses and bone loss in ligature-induced periodontitis. Deletion of tachykinin precursor 1 (Tac1), a gene that encodes SP, or treatment of gingiva with SP antagonist significantly reduced bone loss in ligature-induced periodontitis, whereas deletion of calcitonin related polypeptide alpha (Calca), a gene that encodes CGRP, showed a marginal role on bone loss. Ligature-induced recruitment of leukocytes, including neutrophils, and increase in cytokines leading to bone loss in periodontium was significantly less in Tac1 knockout mice. Furthermore, intra-gingival injection of SP, but not neurokinin A, induced a vigorous inflammatory response and osteoclast activation in alveolar bone and facilitated bone loss in ligature-induced periodontitis. Altogether, our data suggest that SP plays significant roles in regulating host responses and bone resorption in ligature-induced periodontitis.
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Affiliation(s)
- Yasir Dilshad Siddiqui
- Program in Neuroscience, Center to Advance Chronic Pain Research, Department of Neural and Pain Sciences, School of Dentistry, University of Maryland, Baltimore, MD, United States
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Saudi Arabia
| | - Xuguang Nie
- Program in Neuroscience, Center to Advance Chronic Pain Research, Department of Neural and Pain Sciences, School of Dentistry, University of Maryland, Baltimore, MD, United States
| | - Sheng Wang
- Program in Neuroscience, Center to Advance Chronic Pain Research, Department of Neural and Pain Sciences, School of Dentistry, University of Maryland, Baltimore, MD, United States
| | - Yasaman Abbasi
- Program in Neuroscience, Center to Advance Chronic Pain Research, Department of Neural and Pain Sciences, School of Dentistry, University of Maryland, Baltimore, MD, United States
| | - Lauren Park
- Program in Neuroscience, Center to Advance Chronic Pain Research, Department of Neural and Pain Sciences, School of Dentistry, University of Maryland, Baltimore, MD, United States
| | - Xiaoxuan Fan
- Department of Microbiology and Immunology, Flow Cytometry Shared Service, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Vivek Thumbigere-Math
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, United States
| | - Man-Kyo Chung
- Program in Neuroscience, Center to Advance Chronic Pain Research, Department of Neural and Pain Sciences, School of Dentistry, University of Maryland, Baltimore, MD, United States
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Shannonhouse J, Gomez R, Son H, Zhang Y, Kim YS. In Vivo Calcium Imaging of Neuronal Ensembles in Networks of Primary Sensory Neurons in Intact Dorsal Root Ganglia. J Vis Exp 2023:10.3791/64826. [PMID: 36847407 PMCID: PMC10785773 DOI: 10.3791/64826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
Ca2+ imaging can be used as a proxy for cellular activity, including action potentials and various signaling mechanisms involving Ca2+ entry into the cytoplasm or the release of intracellular Ca2+ stores. Pirt-GCaMP3-based Ca2+ imaging of primary sensory neurons of the dorsal root ganglion (DRG) in mice offers the advantage of simultaneous measurement of a large number of cells. Up to 1,800 neurons can be monitored, allowing neuronal networks and somatosensory processes to be studied as an ensemble in their normal physiological context at a populational level in vivo. The large number of neurons monitored allows the detection of activity patterns that would be challenging to detect using other methods. Stimuli can be applied to the mouse hindpaw, allowing the direct effects of stimuli on the DRG neuron ensemble to be studied. The number of neurons producing Ca2+ transients as well as the amplitude of Ca2+ transients indicates sensitivity to specific sensory modalities. The diameter of neurons provides evidence of activated fiber types (non-noxious mechano vs. noxious pain fibers, Aβ, Aδ, and C fibers). Neurons expressing specific receptors can be genetically labeled with td-Tomato and specific Cre recombinases together with Pirt-GCaMP. Therefore, Pirt-GCaMP3 Ca2+ imaging of DRG provides a powerful tool and model for the analysis of specific sensory modalities and neuron subtypes acting as an ensemble at the populational level to study pain, itch, touch, and other somatosensory signals.
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Affiliation(s)
- John Shannonhouse
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio
| | - Ruben Gomez
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio
| | - Hyeonwi Son
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio
| | - Yan Zhang
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio
| | - Yu Shin Kim
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio; Programs in Integrated Biomedical Sciences, Translational Sciences, Biomedical Engineering, Radiological Sciences, University of Texas Health Science Center at San Antonio;
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Chung MK, Wang S, Alshanqiti I, Hu J, Ro JY. The degeneration-pain relationship in the temporomandibular joint: Current understandings and rodent models. FRONTIERS IN PAIN RESEARCH 2023; 4:1038808. [PMID: 36846071 PMCID: PMC9947567 DOI: 10.3389/fpain.2023.1038808] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 01/18/2023] [Indexed: 02/11/2023] Open
Abstract
Temporomandibular disorders (TMD) represent a group of musculoskeletal conditions involving the temporomandibular joints (TMJ), the masticatory muscles and associated structures. Painful TMD are highly prevalent and conditions afflict 4% of US adults annually. TMD include heterogenous musculoskeletal pain conditions, such as myalgia, arthralgia, and myofascial pain. A subpopulations of TMD patients show structural changes in TMJ, including disc displacement or degenerative joint diseases (DJD). DJD is a slowly progressing, degenerative disease of the TMJ characterized by cartilage degradation and subchondral bone remodeling. Patients with DJD often develop pain (TMJ osteoarthritis; TMJ OA), but do not always have pain (TMJ osteoarthrosis). Therefore, pain symptoms are not always associated with altered TMJ structures, which suggests that a causal relationship between TMJ degeneration and pain is unclear. Multiple animal models have been developed for determining altered joint structure and pain phenotypes in response to various TMJ injuries. Rodent models of TMJOA and pain include injections to induce inflammation or cartilage destruction, sustained opening of the oral cavity, surgical resection of the articular disc, transgenic approaches to knockout or overexpress key genes, and an integrative approach with superimposed emotional stress or comorbidities. In rodents, TMJ pain and degeneration occur during partially overlapping time periods in these models, which suggests that common biological factors may mediate TMJ pain and degeneration over different time courses. While substances such as intra-articular pro-inflammatory cytokines commonly cause pain and joint degeneration, it remains unclear whether pain or nociceptive activities are causally associated with structural degeneration of TMJ and whether structural degeneration of TMJ is necessary for producing persistent pain. A thorough understanding of the determining factors of pain-structure relationships of TMJ during the onset, progression, and chronification by adopting novel approaches and models should improve the ability to simultaneously treat TMJ pain and TMJ degeneration.
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Affiliation(s)
- Man-Kyo Chung
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, University of Maryland Baltimore, Baltimore, MD, United States
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Fluorescent probes in stomatology. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Wanasuntronwong A, Kaewsrisung S, Rotpenpian N, Arayapisit T, Pavasant P, Supronsinchai W. Efficacy and mechanism of the antinociceptive effects of cannabidiol on acute orofacial nociception induced by Complete Freund’s Adjuvant in male Mus musculus mice. Arch Oral Biol 2022; 144:105570. [DOI: 10.1016/j.archoralbio.2022.105570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 10/10/2022] [Accepted: 10/10/2022] [Indexed: 11/28/2022]
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Arora V, Li T, Kumari S, Wang S, Asgar J, Chung MK. Capsaicin-induced depolymerization of axonal microtubules mediates analgesia for trigeminal neuropathic pain. Pain 2022; 163:1479-1488. [PMID: 34724681 PMCID: PMC9046530 DOI: 10.1097/j.pain.0000000000002529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 10/05/2021] [Accepted: 10/25/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Capsaicin is a specific agonist of transient receptor potential vanilloid 1 (TRPV1), which is enriched in nociceptors. Capsaicin not only produces acute pain but also leads to long-lasting analgesia in patients with chronic pain. Although capsaicin-induced TRPV1 and Ca 2+ /calpain-dependent ablation of axonal terminals is necessary for long-lasting analgesia, the mechanisms underlying capsaicin-induced ablation of axonal terminals and its association with analgesia are not fully understood. Microtubules are composed of tubulin polymers and serve as a main axonal cytoskeleton maintaining axonal integrity. In this study, we hypothesized that capsaicin would increase the depolymerization of microtubules and lead to axonal ablation and analgesia for trigeminal neuropathic pain. Paclitaxel, a microtubule stabilizer, decreased capsaicin-induced ablation of axonal terminals in time-lapsed imaging in vitro. Capsaicin increases free tubulin in dissociated sensory neurons, which was inhibited by paclitaxel. Consistently, subcutaneous injection of paclitaxel prevented capsaicin-induced axonal ablation in the hind paw skin. Capsaicin administration to the facial skin produced analgesia for mechanical hyperalgesia in mice with chronic constriction injury of the infraorbital nerve, which was prevented by the coadministration of paclitaxel and capsaicin. Whole-mount staining of facial skin showed that paclitaxel reduced capsaicin-induced ablation of peptidergic afferent terminals. Despite the suggested involvement of TRPV1 Ser801 phosphorylation on microtubule integrity, capsaicin-induced analgesia was not affected in TRPV1 S801A knock-in mice. In conclusion, capsaicin-induced depolymerization of axonal microtubules determined capsaicin-induced ablation of nociceptive terminals and the extent of analgesia. Further understanding of TRPV1/Ca 2+ -dependent mechanisms of capsaicin-induced ablation and analgesia may help to improve the management of chronic pain.
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Affiliation(s)
- Vipin Arora
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, the University of Maryland Baltimore, Baltimore, MD, United States
| | - Tingting Li
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, the University of Maryland Baltimore, Baltimore, MD, United States
| | - Sinu Kumari
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, the University of Maryland Baltimore, Baltimore, MD, United States
| | - Sheng Wang
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, the University of Maryland Baltimore, Baltimore, MD, United States
| | - Jamila Asgar
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, the University of Maryland Baltimore, Baltimore, MD, United States
| | - Man-Kyo Chung
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, the University of Maryland Baltimore, Baltimore, MD, United States
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Puengsurin D, Meepong R, Rotpenpian N, Wanasuntronwong A, Surarit R. Sucrose alleviates capsaicin-induced tongue burning: An in vivo study. J Clin Exp Dent 2022; 14:e541-e545. [PMID: 35912025 PMCID: PMC9328490 DOI: 10.4317/jced.58911] [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: 03/22/2022] [Accepted: 05/23/2022] [Indexed: 12/03/2022] Open
Abstract
Background Spicy foods are flavorful and stimulate salivation, which is beneficial for individuals with poor appetite. They are also ubiquitous in many regional cuisines, but the chemical compounds in such foods, especially capsaicin from chili peppers, can cause tissue inflammation and generate intolerable burning pain in the oral cavity.
Material and Methods To identify a potential method to reduce capsaicin-induced burning pain without influencing food flavor, we tested the effects of mouth rinsing with various concentrations of sucrose. Inclusion criteria were good general and oral health, while exclusion criteria were poor baseline smell or taste, capsaicin allergy, and current orofacial pain complaints. To define an appropriate capsaicin dose, participants placed filter paper strips impregnated with 0.003%–0.3% capsaicin on the tip of the tongue and rated burning sensation by visual analog scale (VAS) score.
Results A 0.1% capsaicin solution induced tongue burning in the midrange (VAS = 6.33 ± 0.52) and so was used for subsequent tests. We then examined the efficacy concentration of sucrose for reducing tongue burning by recording VAS scores at multiple time points following a 15-s oral rinse with various aqueous sucrose solutions (5%, 10%, and 20%), milk, or pure water (control) after 0.1% capsaicin application. Scores were compared at each time point by one-way ANOVA with post hoc Dunnett’s tests. A 15-s rinse with 20% sucrose significantly alleviated burning pain compared to water rinse at 45, 60, 120, and 180 s after capsaicin exposure.
Conclusions Thus, periodic rinsing with 20% aqueous sucrose may help promote spicy food consumption among individuals with poor appetite. Key words:Capsaicin, sucrose, burning sensation.
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Affiliation(s)
- Duangchewan Puengsurin
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok 10400, Thailand
| | - Rittinarong Meepong
- Faculty of Pharmaceutical Sciences, Burapha University, Chonburi 20131, Thailand
| | - Nattapon Rotpenpian
- Department of Oral Biology and Occlusion, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand
| | - Aree Wanasuntronwong
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok 10400, Thailand
| | - Rudee Surarit
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok 10400, Thailand
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Guo Y, Wang B, Gao H, He C, Hua R, Gao L, Du Y, Xu J. Insight into the Role of Psychological Factors in Oral Mucosa Diseases. Int J Mol Sci 2022; 23:ijms23094760. [PMID: 35563151 PMCID: PMC9099906 DOI: 10.3390/ijms23094760] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 04/22/2022] [Accepted: 04/23/2022] [Indexed: 02/04/2023] Open
Abstract
With the development of psychology and medicine, more and more diseases have found their psychological origins and associations, especially ulceration and other mucosal injuries, within the digestive system. However, the association of psychological factors with lesions of the oral mucosa, including oral squamous cell carcinoma (OSCC), burning mouth syndrome (BMS), and recurrent aphthous stomatitis (RAS), have not been fully characterized. In this review, after introducing the association between psychological and nervous factors and diseases, we provide detailed descriptions of the psychology and nerve fibers involved in the pathology of OSCC, BMS, and RAS, pointing out the underlying mechanisms and suggesting the clinical indications.
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Affiliation(s)
- Yuexin Guo
- Department of Oral Medicine, Basic Medical College, Capital Medical University, Beijing 100069, China; (Y.G.); (Y.D.)
| | - Boya Wang
- Department of Clinical Medicine, Peking University Health Science Center, Beijing 100081, China;
| | - Han Gao
- Department of Physiology and Pathophysiology, Basic Medical College, Capital Medical University, Beijing 100069, China; (H.G.); (C.H.)
| | - Chengwei He
- Department of Physiology and Pathophysiology, Basic Medical College, Capital Medical University, Beijing 100069, China; (H.G.); (C.H.)
| | - Rongxuan Hua
- Department of Clinical Medicine, Basic Medical College, Capital Medical University, Beijing 100069, China;
| | - Lei Gao
- Department of Bioinformatics, College of Bioengineering, Capital Medical University, Beijing 100069, China;
| | - Yixuan Du
- Department of Oral Medicine, Basic Medical College, Capital Medical University, Beijing 100069, China; (Y.G.); (Y.D.)
| | - Jingdong Xu
- Department of Physiology and Pathophysiology, Basic Medical College, Capital Medical University, Beijing 100069, China; (H.G.); (C.H.)
- Correspondence: ; Tel./Fax: +86-10-8391-1469
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Ferreira AS, Macedo C, Silva AM, Delerue-Matos C, Costa P, Rodrigues F. Natural Products for the Prevention and Treatment of Oral Mucositis-A Review. Int J Mol Sci 2022; 23:ijms23084385. [PMID: 35457202 PMCID: PMC9030892 DOI: 10.3390/ijms23084385] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 02/06/2023] Open
Abstract
Cancer, a major world public health problem, is associated with chemotherapy treatments whose administration leads to secondary concerns, such as oral mucositis (OM). The OM disorder is characterized by the presence of ulcers in the oral mucosa that cause pain, bleeding, and difficulty in ingesting fluids and solids, or speaking. Bioactive compounds from natural sources have arisen as an effective approach for OM. This review aims to summarize the new potential application of different natural products in the prevention and treatment of OM in comparison to conventional ones, also providing a deep insight into the most recent clinical studies. Natural products, such as Aloe vera, Glycyrrhiza glabra, Camellia sinensis, Calendula officinalis, or honeybee crops, constitute examples of sources of bioactive compounds with pharmacological interest due to their well-reported activities (e.g., antimicrobial, antiviral, anti-inflammatory, analgesic, or wound healing). These activities are associated with the bioactive compounds present in their matrix (such as flavonoids), which are associated with in vivo biological activities and minimal or absent toxicity. Finally, encapsulation has arisen as a future opportunity to preserve the chemical stability and the drug bioa vailability of bioactive compounds and, most importantly, to improve the buccal retention period and the therapeutic effects.
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Affiliation(s)
- Ana Sofia Ferreira
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
| | - Catarina Macedo
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
| | - Ana Margarida Silva
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
| | - Cristina Delerue-Matos
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
| | - Paulo Costa
- UCIBIO—Applied Molecular Biosciences Unit, MedTech-Laboratory of Pharmaceutical Technology, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Francisca Rodrigues
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
- Correspondence: ; Tel.: +351-22-83-40-500
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