1
|
Valenzuela-Hormazabal P, Sepúlveda RV, Alegría-Arcos M, Valdés-Muñoz E, Rojas-Pérez V, González-Bonet I, Suardíaz R, Galarza C, Morales N, Leddermann V, Castro RI, Benso B, Urra G, Hernández-Rodríguez EW, Bustos D. Unveiling Novel Urease Inhibitors for Helicobacter pylori: A Multi-Methodological Approach from Virtual Screening and ADME to Molecular Dynamics Simulations. Int J Mol Sci 2024; 25:1968. [PMID: 38396647 PMCID: PMC10888695 DOI: 10.3390/ijms25041968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/20/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
Helicobacter pylori (Hp) infections pose a global health challenge demanding innovative therapeutic strategies by which to eradicate them. Urease, a key Hp virulence factor hydrolyzes urea, facilitating bacterial survival in the acidic gastric environment. In this study, a multi-methodological approach combining pharmacophore- and structure-based virtual screening, molecular dynamics simulations, and MM-GBSA calculations was employed to identify novel inhibitors for Hp urease (HpU). A refined dataset of 8,271,505 small molecules from the ZINC15 database underwent pharmacokinetic and physicochemical filtering, resulting in 16% of compounds for pharmacophore-based virtual screening. Molecular docking simulations were performed in successive stages, utilizing HTVS, SP, and XP algorithms. Subsequent energetic re-scoring with MM-GBSA identified promising candidates interacting with distinct urease variants. Lys219, a residue critical for urea catalysis at the urease binding site, can manifest in two forms, neutral (LYN) or carbamylated (KCX). Notably, the evaluated molecules demonstrated different interaction and energetic patterns in both protein variants. Further evaluation through ADMET predictions highlighted compounds with favorable pharmacological profiles, leading to the identification of 15 candidates. Molecular dynamics simulations revealed comparable structural stability to the control DJM, with candidates 5, 8 and 12 (CA5, CA8, and CA12, respectively) exhibiting the lowest binding free energies. These inhibitors suggest a chelating capacity that is crucial for urease inhibition. The analysis underscores the potential of CA5, CA8, and CA12 as novel HpU inhibitors. Finally, we compare our candidates with the chemical space of urease inhibitors finding physicochemical similarities with potent agents such as thiourea.
Collapse
Affiliation(s)
- Paulina Valenzuela-Hormazabal
- Departamento de Farmacología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción 4030000, Chile;
| | - Romina V. Sepúlveda
- Center for Bioinformatics and Integrative Biology, Facultad de Ciencias de la Vida, Universidad Andres Bello, Av. República 330, Santiago 8370146, Chile;
| | - Melissa Alegría-Arcos
- Núcleo de Investigación en Data Science, Facultad de Ingeniería y Negocios, Universidad de las Américas, Santiago 7500000, Chile;
| | - Elizabeth Valdés-Muñoz
- Doctorado en Biotecnología Traslacional, Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca 3480094, Chile; (E.V.-M.); (V.R.-P.)
| | - Víctor Rojas-Pérez
- Doctorado en Biotecnología Traslacional, Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca 3480094, Chile; (E.V.-M.); (V.R.-P.)
| | - Ileana González-Bonet
- Biomedical Research Labs, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile;
| | - Reynier Suardíaz
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain;
| | - Christian Galarza
- Departamento de Matemáticas, Facultad de Ciencias Naturales y Matemáticas, Escuela Superior Politécnica del Litoral, Guayaquil 090112, Ecuador;
| | - Natalia Morales
- Magíster en Ciencias de la Computación, Universidad Católica del Maule, Talca 3460000, Chile; (N.M.); (V.L.)
| | - Verónica Leddermann
- Magíster en Ciencias de la Computación, Universidad Católica del Maule, Talca 3460000, Chile; (N.M.); (V.L.)
| | - Ricardo I. Castro
- Multidisciplinary Agroindustry Research Laboratory, Instituto de Ciencias Aplicadas, Facultad de Arquitectura, Construcción y Medio Ambiente, Universidad Autónoma de Chile, Cinco Pte. N°1670, Talca 3467987, Chile;
| | - Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile;
| | - Gabriela Urra
- Laboratorio de Bioinformática y Química Computacional, Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile;
| | - Erix W. Hernández-Rodríguez
- Laboratorio de Bioinformática y Química Computacional, Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile;
- Unidad de Bioinformática Clínica, Centro Oncológico, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile
| | - Daniel Bustos
- Laboratorio de Bioinformática y Química Computacional, Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile;
| |
Collapse
|
2
|
Franchin M, Saliba ASMC, Giovanini de Oliveira Sartori A, Orestes Pereira Neto S, Benso B, Ikegaki M, Wang K, Matias de Alencar S, Granato D. Food-grade delivery systems of Brazilian propolis from Apis mellifera: From chemical composition to bioactivities in vivo. Food Chem 2024; 432:137175. [PMID: 37633143 DOI: 10.1016/j.foodchem.2023.137175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/29/2023] [Accepted: 08/14/2023] [Indexed: 08/28/2023]
Abstract
Brazilian propolis from Apis mellifera is widely studied worldwide due to its unique chemical composition and biological properties, such as antioxidant, antimicrobial, and anti-inflammatory. However, although many countries produce honey, another bee product, the consumption of propolis as a functional ingredient is linked to hydroethanolic extract. Hence, other food uses of propolis still have to be incorporated into food systems. Assuming that propolis is a rich source of flavonoids and is regarded as a food-grade ingredient for food and pharmaceutical applications, this review provides a theoretical and practical basis for optimising the bioactive properties of Brazilian propolis, encompassing the extraction processes and incorporating its bioactive compounds in the delivery systems for food applications. Overall, pharmacotechnical resources can optimise the extraction and enhance the chemical stability of phenolic compounds to ensure the bioactivity of food formulations.
Collapse
Affiliation(s)
- Marcelo Franchin
- Bioactivity and Applications Lab, Department of Biological Sciences, Faculty of Science and Engineering, School of Natural Sciences, University of Limerick, Limerick, Ireland; School of Dentistry, Federal University of Alfenas (Unifal-MG), Alfenas, MG, Brazil.
| | | | - Alan Giovanini de Oliveira Sartori
- Department of Agri-Food Industry, Food, and Nutrition, Luiz de Queiroz College of Agriculture, University of São Paulo (USP), Piracicaba, SP, Brazil
| | | | - Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Masaharu Ikegaki
- Faculty of Pharmaceutical Sciences, Federal University of Alfenas - UNIFAL-MG, Alfenas, MG, Brazil
| | - Kai Wang
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Severino Matias de Alencar
- Department of Agri-Food Industry, Food, and Nutrition, Luiz de Queiroz College of Agriculture, University of São Paulo (USP), Piracicaba, SP, Brazil; Center for Nuclear Energy in Agriculture, University of São Paulo (USP), Piracicaba, SP, Brazil
| | - Daniel Granato
- Bioactivity and Applications Lab, Department of Biological Sciences, Faculty of Science and Engineering, School of Natural Sciences, University of Limerick, Limerick, Ireland.
| |
Collapse
|
3
|
Ferreira LEN, Franz-Montan M, Benso B, Gill HS. Microneedles for oral mucosal delivery - Current trends and perspective on future directions. Expert Opin Drug Deliv 2023; 20:1251-1265. [PMID: 37781735 DOI: 10.1080/17425247.2023.2264189] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
INTRODUCTION Oral cavity drug and vaccine delivery has the potential for local targeting, dose reduction, minimization of systemic side effects, and generation of mucosal immunity. To overcome current limitations of delivery into the oral cavity mucosa, microneedles (MNs) have emerged as a promising technology. AREAS COVERED We reviewed the literature on MN application in the oral cavity, including in vitro studies, in vivo animal studies, and human clinical trials. EXPERT OPINION MNs are sufficiently robust to cross the oral cavity epithelium and nearly painless when applied to different parts of the human oral mucosa including the lip, cheek, tongue, and palate. In recent years, MNs have been evaluated for different applications, including vaccination, topical anesthetic delivery, and treatment of local oral pathologies such as oral lesions or carcinomas. MNs are attractive because they have the potential to produce a better treatment outcome with reduced side effects. Over the coming years, we project a significant increase in research related to the development of MNs for use in dentistry and other medical conditions of the mouth.
Collapse
Affiliation(s)
- Luiz E N Ferreira
- Laboratory of Inflammation and Immunology, Guarulhos University, Guarulhos, SP, Brazil
| | - Michelle Franz-Montan
- Department of Biosciences, Piracicaba Dental School, University of Campinas, Campinas, SP, Brazil
| | - Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
- Millennium Nucleus of Ion Channels Associated Diseases (MiNICAD), Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Harvinder S Gill
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX, USA
| |
Collapse
|
4
|
Bustos D, Galarza C, Ordoñez W, Brauchi S, Benso B. Cost-Effective Pipeline for a Rational Design and Selection of Capsaicin Analogues Targeting TRPV1 Channels. ACS Omega 2023; 8:11736-11749. [PMID: 37033853 PMCID: PMC10077575 DOI: 10.1021/acsomega.2c05672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/25/2022] [Indexed: 06/19/2023]
Abstract
Transient receptor potential (TRP) channels constitute a large group of membrane receptors associated with sensory pathways in vertebrates. One of the most studied is TRPV1, a polymodal receptor tuned for detecting heat and pungent compounds. Specific inhibition of the nociceptive transduction at the peripheral nerve represents a convenient approach to pain relief. While acting as a chemoreceptor, TRPV1 shows high sensitivity and selectivity for capsaicin. In contrast to the drugs available on the market that target the inflammatory system, TRPV1 antagonists act as negative modulators of nociceptive transduction. Therefore, the development of compounds modulating TRPV1 activity has expanded dramatically over time. Experimental data suggest that most agonist and antagonist drugs interact at or near capsaicin's binding site. In particular, the properties of capsaicin's head play an essential role in modulating potency and affinity. Here, we explored a cost-efficient pipeline to predict the effects of introducing chemical modifications into capsaicin's head region. An extensive set of molecules was selected by first considering the geometrical properties of capsaicin's binding site and then molecular docking. Finally, the novel ligands were ranked by combining molecular and pharmacokinetic predictions.
Collapse
Affiliation(s)
- Daniel Bustos
- Centro
de Investigación de Estudios Avanzados del Maule (CIEAM), Vicerrectoría
de Investigación y Postgrado, Universidad
Católica del Maule, Talca 3460000, Chile
- Laboratorio
de Bioinformática y Química Computacional, Departamento
de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile
| | - Christian Galarza
- Facultad
de Ciencias Naturales y Matemáticas, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil 090703, Ecuador
| | - Wilson Ordoñez
- Facultad
de Ciencias Naturales y Matemáticas, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil 090703, Ecuador
| | - Sebastian Brauchi
- Department
of Physiology, Faculty of Medicine, Universidad
Austral de Chile, Valdivia 5090000, Chile
- Millennium
Nucleus of Ion Channels Associated Diseases (MiNICAD), 8330024, Chile
| | - Bruna Benso
- Millennium
Nucleus of Ion Channels Associated Diseases (MiNICAD), 8330024, Chile
- School of
Dentistry, Faculty of Medicine, Pontificia
Universidad Católica de Chile, Santiago 8330024, Chile
| |
Collapse
|
5
|
Aguayo S, Benso B, Cantarutti C, Ortuño D, Véliz C. Case-based learning to teach scientific thinking to dental students. J Dent Educ 2022; 86 Suppl 3:1734-1736. [PMID: 35075648 DOI: 10.1002/jdd.12893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/12/2022] [Accepted: 01/18/2022] [Indexed: 12/24/2022]
Affiliation(s)
- Sebastian Aguayo
- Faculty of Medicine, School of Dentistry, Pontificia Universidad Católica de Chile, Santiago, Chile.,Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Bruna Benso
- Faculty of Medicine, School of Dentistry, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Cynthia Cantarutti
- Faculty of Medicine, School of Dentistry, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Duniel Ortuño
- Faculty of Medicine, School of Dentistry, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia Véliz
- Faculty of Medicine, School of Dentistry, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
6
|
Souza JGS, Costa Oliveira BE, Costa RC, Bechara K, Cardoso-Filho O, Benso B, Shibli JA, Bertolini M, Barāo VAR. Bacterial-derived extracellular polysaccharides reduce antimicrobial susceptibility on biotic and abiotic surfaces. Arch Oral Biol 2022; 142:105521. [PMID: 35988499 DOI: 10.1016/j.archoralbio.2022.105521] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/07/2022] [Accepted: 08/08/2022] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Extracellular biofilm matrix plays a role in reducing bacterial susceptibility against antimicrobials. Since the surface where biofilm is growing modulates microbial accumulation and bacterial-derived exopolysaccharides (EPS) synthesis, this study compared the role of EPS to reduce antimicrobial susceptibility on biotic (dental surface) and abiotic (titanium (Ti) material) surfaces and the effect of remaining matrix-enriched biofilms to promote bacterial recolonization. DESIGN 48 h Streptococcus mutans UA159 strain biofilms were grown on enamel and Ti surfaces. The medium was supplemented with 1% sucrose, substrate for EPS synthesis, or with 0.5% glucose + 0.5% fructose as control. Chlorhexidine (CHX) 0.2% was used for antimicrobial treatment. Biofilms were collected and the following analyses were considered: viable bacterial counts, biofilm pH, EPS content, and biofilm structure by scanning electron microscopy and confocal laser scanning microscopy (CLSM). Substrate surfaces were analyzed by 3D laser scanning confocal microscope. RESULTS Enamel surface showed a higher amount of EPS content (p < 0.05), which may be explained by the higher bacterial biomass compared to Ti material. EPS content reduced bacterial susceptibility against antimicrobial treatments for both substrates, compared to EPS control (p < 0.05). However, sucrose-treated cells presented the same magnitude of reduction for Ti or enamel. Interestingly, matrix-enriched biofilms favored bacterial recolonization for both substrates. CONCLUSION The surface where the biofilm is growing modulates the amount of EPS synthesized and matrix content plays a key role in reducing antimicrobial susceptibility and promoting bacterial recolonization.
Collapse
Affiliation(s)
- Joāo Gabriel S Souza
- Dental Research Division, Guarulhos University (UNG), Guarulhos, Sāo Paulo, Brazil; Dental Science School (Faculdade de Ciências Odontológicas - FCO), Montes Claros, Minas Gerais, Brazil.
| | | | - Raphael C Costa
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Karen Bechara
- Dental Research Division, Guarulhos University (UNG), Guarulhos, Sāo Paulo, Brazil
| | - Otávio Cardoso-Filho
- Dental Science School (Faculdade de Ciências Odontológicas - FCO), Montes Claros, Minas Gerais, Brazil; Laboratory of Health Science, Postgraduate Program in Health Sciences, Universidade Estadual de Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil
| | - Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Jamil Awad Shibli
- Dental Research Division, Guarulhos University (UNG), Guarulhos, Sāo Paulo, Brazil
| | - Martinna Bertolini
- Department of Periodontics and Preventive Dentistry, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Valentim A R Barāo
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil.
| |
Collapse
|
7
|
Jara MG, Benso B, Lagos MJ, Tapia PC, Paulino MB, Silva CI. PCR-detection of Helicobacter pylori from oral mucosa: A feasible early diagnostic tool. Ann Diagn Pathol 2022; 61:152022. [DOI: 10.1016/j.anndiagpath.2022.152022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 08/01/2022] [Indexed: 11/01/2022]
|
8
|
Costa RC, Bertolini M, Costa Oliveira BE, Nagay BE, Dini C, Benso B, Klein MI, Barāo VAR, Souza JGS. Polymicrobial biofilms related to dental implant diseases: unravelling the critical role of extracellular biofilm matrix. Crit Rev Microbiol 2022; 49:370-390. [PMID: 35584310 DOI: 10.1080/1040841x.2022.2062219] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Biofilms are complex tri-dimensional structures that encase microbial cells in an extracellular matrix comprising self-produced polymeric substances. The matrix rich in extracellular polymeric substance (EPS) contributes to the unique features of biofilm lifestyle and structure, enhancing microbial accretion, biofilm virulence, and antimicrobial resistance. The role of the EPS matrix of biofilms growing on biotic surfaces, especially dental surfaces, is largely unravelled. To date, there is a lack of a broad overview of existing literature concerning the relationship between the EPS matrix and the dental implant environment and its role in implant-related infections. Here, we discuss recent advances in the critical role of the EPS matrix on biofilm growth and virulence on the dental implant surface and its effect on the etiopathogenesis and progression of implant-related infections. Similar to other biofilms associated with human diseases/conditions, EPS-enriched biofilms on implant surfaces promote microbial accumulation, microbiological shift, cross-kingdom interaction, antimicrobial resistance, biofilm virulence, and, consequently, peri-implant tissue damage. But intriguingly, the protagonism of EPS role on implant-related infections and the development of matrix-target therapeutic strategies has been neglected. Finally, we highlight the need for more in-depth analyses of polymicrobial interactions within EPS matrix and EPS-targeting technologies' rationale for disrupting the complex biofilm microenvironment with more outstanding translation to implant applications in the near future.
Collapse
Affiliation(s)
- Raphael C Costa
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Brazil
| | - Martinna Bertolini
- Department of Oral Health and Diagnostic Sciences, University of Connecticut Health Center, Farmington, CT, USA
| | | | - Bruna E Nagay
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Brazil
| | - Caroline Dini
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Brazil
| | - Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, CA, Chile
| | - Marlise I Klein
- Department of Dental Materials and Prosthodontics, São Paulo State University, São Paulo, Brazil
| | - Valentim A R Barāo
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Brazil
| | - Joāo Gabriel S Souza
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Brazil.,Dental Science School (Faculdade de Ciências Odontológicas - FCO), Montes Claros, Brazil.,Dental Research Division, Guarulhos University, Sāo Paulo, Brazil
| |
Collapse
|
9
|
Abstract
Biofilm-mediated oral diseases such as dental caries and periodontal disease remain highly prevalent in populations worldwide. Biofilm formation initiates with the attachment of primary colonizers onto surfaces, and in the context of caries, the adhesion of oral streptococci to dentinal collagen is crucial for biofilm progression. It is known that dentinal collagen suffers from glucose-associated crosslinking as a function of aging or disease; however, the effect of collagen crosslinking on the early adhesion and subsequent biofilm formation of relevant oral streptococci remains unknown. Therefore, the aim of this work was to determine the impact of collagen glycation on the initial adhesion of primary colonizers such as Streptococcus mutans UA159 and Streptococcus sanguinis SK 36, as well as its effect on the early stages of streptococcal biofilm formation in vitro. Type I collagen matrices were crosslinked with either glucose or methylglyoxal. Atomic force microscopy nanocharacterization revealed morphologic and mechanical changes within the collagen matrix as a function of crosslinking, such as a significantly increased elastic modulus in crosslinked fibrils. Increased nanoadhesion forces were observed for S. mutans on crosslinked collagen surfaces as compared with the control, and retraction curves obtained for both streptococcal strains demonstrated nanoscale unbinding behavior consistent with bacterial adhesin-substrate coupling. Overall, glucose-crosslinked substrates specifically promoted the initial adhesion, biofilm formation, and insoluble extracellular polysaccharide production of S. mutans, while methylglyoxal treatment reduced biofilm formation for both strains. Changes in the adhesion behavior and biofilm formation of oral streptococci as a function of collagen glycation could help explain the biofilm dysbiosis seen in older people and patients with diabetes. Further studies are necessary to determine the influence of collagen crosslinking on the balance between acidogenic and nonacidogenic streptococci to aid in the development of novel preventive and therapeutic treatment against dental caries in these patients.
Collapse
Affiliation(s)
- C M A P Schuh
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - B Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - P A Naulin
- Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - N P Barrera
- Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - L Bozec
- Faculty of Dentistry, University of Toronto, Toronto, Canada
| | - S Aguayo
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.,Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
10
|
Schuh CMAP, Benso B, Aguayo S. Potential Novel Strategies for the Treatment of Dental Pulp-Derived Pain: Pharmacological Approaches and Beyond. Front Pharmacol 2019; 10:1068. [PMID: 31620000 PMCID: PMC6759635 DOI: 10.3389/fphar.2019.01068] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 08/22/2019] [Indexed: 12/18/2022] Open
Abstract
The diagnosis and management of pain is an everyday occurrence in dentistry, and its effective control is essential to ensure the wellbeing of patients. Most tooth-associated pain originates from the dental pulp, a highly vascularized and innervated tissue, which is encased within mineralized dentin. It plays a crucial role in the sensing of stimuli from the local environment, such as infections (i.e. dental caries) and traumatic injury, leading to a local inflammatory response and subsequently to an increase in intra-pulp pressure, activating nerve endings. However, thermal, chemical, and mechanical stimuli also have the ability to generate dental pulp pain, which presents mechanisms highly specific to this tissue and which have to be considered in pain management. Traditionally, the management of dental pulp pain has mostly been pharmacological, using non-steroidal anti-inflammatory drugs (NSAIDs) and opioids, or restorative (i.e. removal of dental caries), or a combination of both. Both research areas continuously present novel and creative approaches. This includes the modulation of thermo-sensitive transient receptor potential cation channels (TRP) by newly designed drugs in pharmacological research, as well as the use of novel biomaterials, stem cells, exosomes and physical stimulation to obtain pulp regeneration in regenerative medicine. Therefore, the aim of this review is to present an up-to-date account of causes underlying dental pain, novel treatments involving the control of pain and inflammation and the induction of pulp regeneration, as well as insights in pain in dentistry from the physiological, pharmacological, regenerative and clinical perspectives.
Collapse
Affiliation(s)
- Christina M. A. P. Schuh
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
- Department of Physiology, Faculty of Medicine, Universidad Austral de Chile, Millennium Nucleus of Ion Channels Associated Diseases (MiNICAD), Valdivia, Chile
| | - Sebastian Aguayo
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
| |
Collapse
|
11
|
Abstract
The emphasis of the present study is to evaluate a natural product and the potential microbicide activity using a dual chamber infection method. Malva sylvestris extracts and fractions were screened for anti-HIV activity by measuring the virus-antibody neutralization. Plant extracts with strong antiviral activity working in nanomolar or picomolar range can be used to enhance the activity of synthetic compounds and work as anti-HIV agents. The aqueous fraction (AF) of M. sylvestris demonstrated antiviral activity in a model with epithelial and blood cell lines. The AF showed an effective antiviral potential on the TZM-bl cells with reduction scores higher than 60% of infectivity. Quantification of p24 in the supernatant of the co-culture model demonstrated a reduction in the number of viral particles after AF treatment (p < 0.05). Cytokines were quantified and all signaling inflammatory markers; IL1-alpha, IL-beta, IL-6, IL-8 and GM-CSF (p < 0.05) were modulated by positive control and AF treatments. In particular, IL-6 had lower levels of expression in Malva groups when compared to the Zidovudine positive control group. Natural occurring derivatives of M. sylvestris demonstrated to work inhibiting reverse transcriptase enzyme action. M. sylvestris contains highly potential anti-HIV-1 BaL components and may be considered a potential source for new formulations in the development of topical microbicides.
Collapse
Affiliation(s)
- Bruna Benso
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.,School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, RM, Chile.,Pharmacology and Toxicology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, RM, Chile
| | - Pedro Luiz Rosalen
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Silvana Pasetto
- School of Dental Medicine, Department Foundational Sciences, East Carolina University, Greenville, NC, USA.,Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
| | | | - Verônica Freitas-Blanco
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Ramiro Mendonça Murata
- School of Dental Medicine, Department Foundational Sciences, East Carolina University, Greenville, NC, USA.,Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
| |
Collapse
|
12
|
Benso B, Bustos D, Zarraga MO, Gonzalez W, Caballero J, Brauchi S. Chalcone derivatives as non-canonical ligands of TRPV1. Int J Biochem Cell Biol 2019; 112:18-23. [PMID: 31026506 DOI: 10.1016/j.biocel.2019.04.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 04/18/2019] [Accepted: 04/22/2019] [Indexed: 10/27/2022]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is a polymodal cation channel activated by heat, voltage, and ligands. Also known as the capsaicin receptor, TRPV1 is expressed in numerous tissues by different cell types, including peripheral sensory fibers where acts as a thermal and chemical detector in nociceptive pathways. TRPV1 channels are able to bind a wide range of ligands, including a number of vanilloid derivatives all modulating channel's activity. When expressed by sensory neurons, activation of TRPV1 channels by heat (>40 °C), capsaicin (sub-micromolar), or acid environment (pH < 6), causes depolarization leading to burning pain sensation in mammals. Naturally occurring chalcones (1,3-diaryl-2-propen-1-ones) have been reported as effective inhibitors of TRPV1. Their relatively simple chemical structure and the possibility for handy chemical modification make them attractive ligands for the treatment of peripheral pain. By taking advantage of the structural information available, here we discuss pharmacological properties of chalcones and their putative mechanism of binding to TRPV1 channels.
Collapse
Affiliation(s)
- Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, RM, Chile; Department of Physiology, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile; Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Valdivia, Chile
| | - Daniel Bustos
- Center for Bioinformatics and Molecular Simulation (CBSM), Universidad de Talca, Talca, Chile
| | - Miguel O Zarraga
- Department of Organic Chemistry, Faculty of Chemical Sciences, Universidad de Concepcion, Concepcion, Chile
| | - Wendy Gonzalez
- Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Valdivia, Chile; Center for Bioinformatics and Molecular Simulation (CBSM), Universidad de Talca, Talca, Chile
| | - Julio Caballero
- Center for Bioinformatics and Molecular Simulation (CBSM), Universidad de Talca, Talca, Chile
| | - Sebastian Brauchi
- Department of Physiology, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile; Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Valdivia, Chile.
| |
Collapse
|
13
|
Aravena PC, Oyarzún CP, Arias MF, Monardes H, Jerez A, Benso B. Single-Dose Bioavailability for Prophylactic Coverage in Patients Undergoing Dental Implant Surgery. Int J Oral Maxillofac Implants 2018. [PMID: 29534130 DOI: 10.11607/jomi.5943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
PURPOSE The use of antibiotic prophylaxis in dental implant surgery is a routine dental practice to prevent implant failure. Current systematic reviews have yet to confirm the effectiveness of antibiotic treatment at reducing postoperative infection rates in implant procedures. The aim of this study was to quantify amoxicillin plasma levels at the peripheral venous blood and at the surgical implant site in patients undergoing dental treatment. MATERIALS AND METHODS A prospective study was conducted. Patients undergoing dental implant surgery were selected, and preoperative doses of 1 g of amoxicillin, in the form of an oral tablet, were administered 1 hour prior to implant surgery. The blood samples (1.5 mL) were collected from both the venous and implant sites. Data on the antibiotics were measured using high-pressure liquid chromatography. The quantification method was validated for linearity, selectivity, and detection limits. Statistical analysis of plasma antibiotic was performed, comparing both samples and the age, height, weight, and body mass index (BMI) (Wilcoxon test, P < .05; STATA v.10.0). RESULTS Thirty-two patients (mean age: 56.28 ± 12.2 years; range: 31 to 79 years; 20 men) were selected. Both blood samples were taken at a mean 1.16 ± 0.37 hours after antibiotic intake. The mean amoxicillin concentration at the implant site reached 5 ± 2.63 μg/mL (range: 2.04 to 11.18 μg/mL), while the venous blood level was 4.21 ± 2.12 μg/mL (range: 1.6 to 9.98 μg/mL) (P = .33). No correlations were observed between age, height, weight, and BMI with antibiotic plasma levels. CONCLUSION These findings demonstrate that plasma concentrations of a prophylactic dose of amoxicillin are higher than the minimum inhibitory concentration needed to prevent the common dental bacteria involved in peri-implantitis and periodontal diseases.
Collapse
|
14
|
Benso B. New insights in the pharmacological treatment of pain in dentistry. J Oral Res 2018. [DOI: 10.17126/joralres.2018.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
15
|
Benso B, Lespay-Rebolledo C, Flores L, Zárraga M, Brauchi S. Chalcones Derivatives as Potent Inhibitors of TRPV1 Activity. Biophys J 2018. [DOI: 10.1016/j.bpj.2017.11.2655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
16
|
Tiveron AP, Rosalen PL, Franchin M, Lacerda RCC, Bueno-Silva B, Benso B, Denny C, Ikegaki M, de Alencar SM. Chemical Characterization and Antioxidant, Antimicrobial, and Anti-Inflammatory Activities of South Brazilian Organic Propolis. PLoS One 2016; 11:e0165588. [PMID: 27802316 PMCID: PMC5089781 DOI: 10.1371/journal.pone.0165588] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 10/16/2016] [Indexed: 11/28/2022] Open
Abstract
South Brazilian organic propolis (OP), which has never been studied before, was assessed and its chemical composition, scavenging potential of reactive oxygen species, antimicrobial and anti-inflammatory activities are herein presented. Based on the chemical profile obtained using HPLC, OP was grouped into seven variants (OP1–OP7) and all of them exhibited high scavenging activity, mainly against superoxide and hypochlorous acid species. OP1, OP2, and OP3 had the smallest minimal inhibitory concentration (MIC) against Gram-positive bacteria Streptococcus mutans, Streptococcus oralis, and Streptococcus aureus (12.5–100 μg/mL). OP1, OP2, OP3, and OP4 were more effective against Pseudomonas aeruginosa (Gram-negative), with MIC values ranging from 100 to 200 μg/mL. OP6 showed anti-inflammatory activity by decreasing NF-kB activation and TNF-α release in RAW 264.7 macrophages, and expressing the NF-κB-luciferase reporter stable gene. Therefore, south Brazilian OP can be considered an excellent source of bioactive compounds with great potential of application in the pharmaceutical and food industry.
Collapse
Affiliation(s)
- Ana Paula Tiveron
- Department of Agri-Food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture, University of São Paulo (USP), Avenida Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil
| | - Pedro Luiz Rosalen
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, CP 52, 13414-903, Piracicaba, SP, Brazil
| | - Marcelo Franchin
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, CP 52, 13414-903, Piracicaba, SP, Brazil
| | - Risia Cristina Coelho Lacerda
- Department of Agri-Food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture, University of São Paulo (USP), Avenida Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil
| | - Bruno Bueno-Silva
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, CP 52, 13414-903, Piracicaba, SP, Brazil
| | - Bruna Benso
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, CP 52, 13414-903, Piracicaba, SP, Brazil
| | - Carina Denny
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, CP 52, 13414-903, Piracicaba, SP, Brazil
| | - Masaharu Ikegaki
- School of Pharmaceutical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, Centro, 37130-000, Alfenas, MG, Brazil
| | - Severino Matias de Alencar
- Department of Agri-Food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture, University of São Paulo (USP), Avenida Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil
- * E-mail:
| |
Collapse
|
17
|
Benso B, Franchin M, Massarioli AP, Paschoal JAR, Alencar SM, Franco GCN, Rosalen PL. Anti-Inflammatory, Anti-Osteoclastogenic and Antioxidant Effects of Malva sylvestris Extract and Fractions: In Vitro and In Vivo Studies. PLoS One 2016; 11:e0162728. [PMID: 27643502 PMCID: PMC5028055 DOI: 10.1371/journal.pone.0162728] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 08/26/2016] [Indexed: 12/29/2022] Open
Abstract
Given their medical importance, natural products represent a tremendous source of drug discovery. The aim of this study was to investigate Malva sylvestris L. extract and fractions and their pharmacological activities followed by chemical identification. The aqueous fraction (AF) was identified as the bioactive fraction in the in vitro and in vivo assays. The AF controlled the neutrophil migration to the peritoneal cavity by 66%, inhibited the antiedematogenic activity by 58.8%, and controlled IL-1β cytokine expression by 54%. The in vitro viability tests showed a concentration-dependent effect, where the MSE and fractions at concentrations under 10 μg/mL were non-toxic to cells. Transcriptional factors of carbonic anhydrase II (CAII), cathepsin K (Ctsk) and tartrate-resistant acid phosphatase (TRAP) were analyzed by qPCR in RAW 264.7 cell lines. The gene expression analysis showed that the AF was the only treatment that could downregulate all the study genes: CAII, Ctsk and TRAP (p<0.05). TRAP staining was used to evaluate osteoclast formation. AF treatments reduced the number of osteoclastogenesis 2.6-fold compared to the vehicle control group. Matrix metalloproteinase 9 (MMP-9) activity decreased 75% with the AF treatment. Moreover, the bioactive fraction had the ability to regulate the oxidation pathway in the ABTS (2,2-Azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) assay with an activity equivalent to 1.30 μmol Trolox/g and DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals 1.01 g/L. Positive ion ESI-mass spectrometry for molecular ions at m/z 611 and 633 confirmed rutin as the major compound in the AF. The AF of M. sylvestris presented anti-inflammatory, controlled osteoclastogenic mechanisms and antioxidant abilities in different in vitro and in vivo methods. In addition, we suggest that given its multi-target activity the bioactive fraction may be a good candidate in the therapy of chronic inflammatory diseases.
Collapse
Affiliation(s)
- Bruna Benso
- Department of Physiological Sciences, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
- School of Dentistry, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile
- * E-mail: (PLR); (BB)
| | - Marcelo Franchin
- Department of Physiological Sciences, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
| | - Adna Prado Massarioli
- Department of Agri-food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil
| | - Jonas Augusto Rizzato Paschoal
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirao Preto, University of Sao Paulo, Riberao Preto, SP, Brazil
| | - Severino Matias Alencar
- Department of Agri-food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil
| | - Gilson Cesar Nobre Franco
- Department of General Biology, Laboratory of Physiology and Pathophysiology, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Pedro Luiz Rosalen
- Department of Physiological Sciences, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
- * E-mail: (PLR); (BB)
| |
Collapse
|
18
|
Affiliation(s)
- Bruna Benso
- a School of Dentistry, Faculty of Medicine, Universidad Austral de Chile , Valdivia , Chile
| |
Collapse
|
19
|
Seleem D, Chen E, Benso B, Pardi V, Murata RM. In vitro evaluation of antifungal activity of monolaurin against Candida albicans biofilms. PeerJ 2016; 4:e2148. [PMID: 27366648 PMCID: PMC4924139 DOI: 10.7717/peerj.2148] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 05/27/2016] [Indexed: 12/15/2022] Open
Abstract
Monolaurin (also known as glycerol monolaurate) is a natural compound found in coconut oil and is known for its protective biological activities as an antimicrobial agent. The nature of oral candidiasis and the increased antifungal resistance demand the search for novel antifungal therapeutic agents. In this study, we examine the antifungal activity of monolaurin against Candida albicans biofilms (strain ATCC:SC5314/MYA2876) in vitro and investigate whether monolaurin can alter gene expression of host inflammatory cytokines, IL-1α and IL-1β. In a co-culture model, oral fibroblast cells were cultured simultaneously with C. albicans for 24 hrs followed by the exposure to treatments of monolaurin (3.9–2,500 µM), positive control fluconazole (32.2 µM), and vehicle control group (1% ethanol), which was a model used to evaluate the cytotoxicity of monolaurin on fibroblasts as well as to analyze morphological characteristics of biofilms through fluorescence microscopy. In addition, the co-culture model was used for RNA extraction of oral fibroblasts to assess gene expression of host inflammatory cytokines, using quantitative real-time PCR. Our results showed the MIC and MFC of monolaurin were in the range 62.5–125 µM and 125–250 µM, respectively. Biofilm antifungal assay showed significant reduction in Log (CFU/ml) of biofilms treated with 1,250 and 2,500 µM of 1-monolaurin when compared to the control groups . There was also a significant down-regulation of IL-1α and IL-1β in the co-culture treated with monolaurin. It can be concluded that monolaurin has a potential antifungal activity against C. albicans and can modulate the pro-inflammatory response of the host.
Collapse
Affiliation(s)
- Dalia Seleem
- Herman Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene and Biomedical Science, University of Southern California, Los Angeles, CA, United States
| | - Emily Chen
- Herman Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene and Biomedical Science, University of Southern California, Los Angeles, CA, United States
| | - Bruna Benso
- Piracicaba Dental School, University of Campinas, Piracicaba, Sao Paulo, Brazil.,Current affiliation: School of Dentistry, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile
| | - Vanessa Pardi
- Herman Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene and Biomedical Science, University of Southern California, Los Angeles, CA, United States
| | - Ramiro M Murata
- Herman Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene and Biomedical Science, University of Southern California, Los Angeles, CA, United States
| |
Collapse
|
20
|
Seleem D, Benso B, Noguti J, Pardi V, Murata RM. In Vitro and In Vivo Antifungal Activity of Lichochalcone-A against Candida albicans Biofilms. PLoS One 2016; 11:e0157188. [PMID: 27284694 PMCID: PMC4902220 DOI: 10.1371/journal.pone.0157188] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 05/25/2016] [Indexed: 11/18/2022] Open
Abstract
Oral candidiasis (OC) is an opportunistic fungal infection with high prevalence among immunocompromised patients. Candida albicans is the most common fungal pathogen responsible for OC, often manifested in denture stomatitis and oral thrush. Virulence factors, such as biofilms formation and secretion of proteolytic enzymes, are key components in the pathogenicity of C. albicans. Given the limited number of available antifungal therapies and the increase in antifungal resistance, demand the search for new safe and effective antifungal treatments. Lichochalcone-A is a polyphenol natural compound, known for its broad protective activities, as an antimicrobial agent. In this study, we investigated the antifungal activity of lichochalcone-A against C. albicans biofilms both in vitro and in vivo. Lichochalcone-A (625 μM; equivalent to 10x MIC) significantly reduced C. albicans (MYA 2876) biofilm growth compared to the vehicle control group (1% ethanol), as indicated by the reduction in the colony formation unit (CFU)/ml/g of biofilm dry weight. Furthermore, proteolytic enzymatic activities of proteinases and phospholipases, secreted by C. albicans were significantly decreased in the lichochalcone-A treated biofilms. In vivo model utilized longitudinal imaging of OC fungal load using a bioluminescent-engineered C. albicans (SKCa23-ActgLUC) and coelenterazine substrate. Mice treated with lichochalcone-A topical treatments exhibited a significant reduction in total photon flux over 4 and 5 days post-infection. Similarly, ex vivo analysis of tongue samples, showed a significant decrease in CFU/ml/mg in tongue tissue sample of lichochalcone-A treated group, which suggest the potential of lichochalcone-A as a novel antifungal agent for future clinical use.
Collapse
Affiliation(s)
- Dalia Seleem
- Herman Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene and Biomedical Sciences, University of Southern California, Los Angeles, CA, United States of America
| | - Bruna Benso
- School of Dentistry, Faculty of Medicine, Universidad Austral de Chile, Campus Isla Teja, Valdivia, Chile
| | - Juliana Noguti
- Herman Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene and Biomedical Sciences, University of Southern California, Los Angeles, CA, United States of America
| | - Vanessa Pardi
- Herman Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene and Biomedical Sciences, University of Southern California, Los Angeles, CA, United States of America
| | - Ramiro Mendonça Murata
- Herman Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene and Biomedical Sciences, University of Southern California, Los Angeles, CA, United States of America
- * E-mail:
| |
Collapse
|
21
|
Aravena P, Benso B. Managemente of phobic dental patients and conscious sedation with nitrous oxide in Chile. J Oral Res 2016. [DOI: 10.17126/joralres.2016.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
22
|
Benso B, Rosalen PL, Alencar SM, Murata RM. Malva sylvestris Inhibits Inflammatory Response in Oral Human Cells. An In Vitro Infection Model. PLoS One 2015; 10:e0140331. [PMID: 26479870 PMCID: PMC4610699 DOI: 10.1371/journal.pone.0140331] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 09/24/2015] [Indexed: 12/24/2022] Open
Abstract
The aim of this study was to investigate the in vitro anti-inflammatory activity of Malva sylvestris extract (MSE) and fractions in a co-culture model of cells infected by Aggregatibacter actinomycetemcomitans. In addition, we evaluated the phytochemical content in the extract and fractions of M. sylvestris and demonstrated that polyphenols were the most frequent group in all samples studied. An in vitro dual-chamber model to mimic the periodontal structure was developed using a monolayer of epithelial keratinocytes (OBA-9) and a subepithelial layer of fibroblasts (HGF-1). The invasive periodontopathogen A. actinomycetemcomitans (D7S-1) was applied to migrate through the cell layers and induce the synthesis of immune factors and cytokines in the host cells. In an attempt to analyze the antimicrobial properties of MSE and fractions, a susceptibility test was carried out. The extract (MIC 175 μg/mL, MBC 500μg/mL) and chloroform fraction (MIC 150 μg/mL, MBC 250 μg/mL) were found to have inhibitory activity. The extract and all fractions were assessed using a cytotoxicity test and results showed that concentrations under 100 μg/mL did not significantly reduce cell viability compared to the control group (p > 0.05, viability > 90%). In order to analyze the inflammatory response, transcriptional factors and cytokines were quantified in the supernatant released from the cells. The chloroform fraction was the most effective in reducing the bacterial colonization (p< 0.05) and controlling inflammatory mediators, and promoted the down-regulation of genes including IL-1beta, IL-6, IL-10, CD14, PTGS, MMP-1 and FOS as well as the reduction of the IL-1beta, IL-6, IL-8 and GM-CSF protein levels (p< 0.05). Malva sylvestris and its chloroform fraction minimized the A. actinomycetemcomitans infection and inflammation processes in oral human cells by a putative pathway that involves important cytokines and receptors. Therefore, this natural product may be considered as a successful dual anti-inflammatory-antimicrobial candidate.
Collapse
Affiliation(s)
- Bruna Benso
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, Sao Paulo, Brazil
| | - Pedro Luiz Rosalen
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, Sao Paulo, Brazil
| | - Severino Matias Alencar
- Department of Agri-food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture, University of Sao Paulo, Piracicaba, Sao Paulo, Brazil
| | - Ramiro Mendonça Murata
- Division of Periodontology, Diagnostic Sciences & Dental Hygiene and Division of Biomedical Sciences Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, United States of America
- * E-mail:
| |
Collapse
|
23
|
Freires IA, Denny C, Benso B, de Alencar SM, Rosalen PL. Antibacterial Activity of Essential Oils and Their Isolated Constituents against Cariogenic Bacteria: A Systematic Review. Molecules 2015; 20:7329-58. [PMID: 25911964 PMCID: PMC6272492 DOI: 10.3390/molecules20047329] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 04/04/2015] [Accepted: 04/10/2015] [Indexed: 12/16/2022] Open
Abstract
Dental caries remains the most prevalent and costly oral infectious disease worldwide. Several methods have been employed to prevent this biofilm-dependent disease, including the use of essential oils (EOs). In this systematic review, we discuss the antibacterial activity of EOs and their isolated constituents in view of a potential applicability in novel dental formulations. Seven databases were systematically searched for clinical trials, in situ, in vivo and in vitro studies addressing the topic published up to date. Most of the knowledge in the literature is based on in vitro studies assessing the effects of EOs on caries-related streptococci (mainly Streptococcus mutans) and lactobacilli, and on a limited number of clinical trials. The most promising species with antibacterial potential against cariogenic bacteria are: Achillea ligustica, Baccharis dracunculifolia, Croton cajucara, Cryptomeria japonica, Coriandrum sativum, Eugenia caryophyllata, Lippia sidoides, Ocimum americanum, and Rosmarinus officinalis. In some cases, the major phytochemical compounds determine the biological properties of EOs. Menthol and eugenol were considered outstanding compounds demonstrating an antibacterial potential. Only L. sidoides mouthwash (1%) has shown clinical antimicrobial effects against oral pathogens thus far. This review suggests avenues for further non-clinical and clinical studies with the most promising EOs and their isolated constituents bioprospected worldwide.
Collapse
Affiliation(s)
- Irlan Almeida Freires
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP 13414-903, Brazil.
| | - Carina Denny
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP 13414-903, Brazil.
| | - Bruna Benso
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP 13414-903, Brazil.
| | - Severino Matias de Alencar
- Department of Agri-food Industry, Food and Nutrition, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Piracicaba, SP 13418-260, Brazil.
| | - Pedro Luiz Rosalen
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP 13414-903, Brazil.
| |
Collapse
|
24
|
Abstract
BACKGROUND Despite being functional and having aesthetic benefits, the acceptance of patients regarding the use of removable partial dentures (RPDs) has been low. In part, this is due to the deleterious effects that causes discomfort to the patient. Success depends not only on the care expended by the patient, including daily care and oral hygiene, but also on common goals set by their professional and clinical staff, aiming beyond aesthetics, to incorporate issues of functionality and the well-being of patients. METHODS AND RESULTS For rehabilitation treatment with RPDs to reach the desired level of success without damaging the support structure, all the steps (diagnose, cavity preparation, adaptation of the metal structures, functional of distal extension and posterior follow-up) in the rehabilitative treatment should be carefully developed. A literature review was carried out, searching through MEDLINE (PubMed) articles published between 1965 and December 2012 including clinical trials and reviews about the use of RPDs. CONCLUSIONS This study describes factors that lead to failures and complications in oral rehabilitation through the use of RPDs and suggests possible solutions.
Collapse
Affiliation(s)
- Bruna Benso
- Department of Physiological Sciences, Piracicaba School of Dentistry, University of Campinas , Sao Paulo , Brazil
| | | | | | | |
Collapse
|
25
|
Aravena P, Benso B, Bertín A, Aravena-Torres R. Efectividad de la profilaxis analgésica con clonixinato de lisina en exodoncias: ensayo clínico aleatorio. Joralres 2013. [DOI: 10.17126/joralres.2013.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|