1
|
Adly AS, Adly MS, Cuisinier F, Egea JC, Panayotov I, Adly AS, Malthiery E. Laser-Induced Blood Coagulation for Surgical Application: A Scoping Review. Semin Thromb Hemost 2024; 50:236-252. [PMID: 37611623 DOI: 10.1055/s-0043-1772573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
There is a lack of evidence-based reviews on the effects of laser irradiation on blood coagulation in the literature, despite a large number of clinical trials. We therefore evaluated the available evidence on laser irradiation parameters used in coagulation of blood to optimize physical parameters. We performed a literature search for recent scientific studies indexed between 2017 and 2023 using the databases of PubMed and ScienceDirect. Articles were selected based on defined inclusion and exclusion criteria, and 78 publications in total were eventually included in this scoping review. The following were found to produce significant benefits in blood coagulation for surgical application: (1) dentistry and oral surgeries: 980 nm, 27 s, 2 W, 1502.7 W/cm2, 26.5 J, 622 J/cm2, 400 μm; (2) urogenital disorders: 532 nm, 4 s, 40 W, 10600 W/cm2, 1.3 J, 424 J/cm2, 600 μm; (3) ophthalmic disorders: 810 nm, 1 s, 1 W, 3540 W/cm2, 0.75 J, 1326 J/cm2, 100 μm; (4) embryological surgeries: 1064 nm, 10 s, 25 W, 35400 W/cm2, 262.5 J, 371000 J/cm2, 332.5 μm; (5) dermatological disorders: 1064 nm, 20 W, 2440 W/cm2, 0.1 J, 24 J/cm2, 670 μm; (6) gastrointestinal disorders: 532 nm, 3 s, 20 W, 1051 W/cm2, 120 J, 26500 J/cm2, 760 μm; (7) neurological surgeries: 2.5 s, 1.5 W, 1035 W/cm2, 2 J, 1584 J/cm2, 385 μm; (8) pulmonary disorders: 1320 nm, 5s, 35 W, 12450 W/cm2, 250 J, 65000 J/cm2, 700 μm (9) cardiovascular disorders: 1064 nm, 16.5 s, 5 W, 1980.5 W/cm2, 900 J, 760 J/cm2, 400 μm. In conclusion, our scoping review identifies that combining data from all clinically heterogeneous studies suggests that laser irradiation reflects an effective method for inducing blood coagulation in several medical fields.
Collapse
Affiliation(s)
| | - Mahmoud Sedky Adly
- LBN, Univ Montpellier, Montpellier, France
- Royal College of Surgeons of Edinburgh, Scotland, United Kingdom
| | - Frederic Cuisinier
- LBN, Univ Montpellier, Montpellier, France
- CSERD, CHU Montpellier, Montpellier, France
- UFR Odontologie, Univ. Montpellier, Montpellier, France
| | - Jean-Christophe Egea
- LBN, Univ Montpellier, Montpellier, France
- CSERD, CHU Montpellier, Montpellier, France
- UFR Odontologie, Univ. Montpellier, Montpellier, France
| | - Ivan Panayotov
- LBN, Univ Montpellier, Montpellier, France
- CSERD, CHU Montpellier, Montpellier, France
- UFR Odontologie, Univ. Montpellier, Montpellier, France
| | | | - Eve Malthiery
- LBN, Univ Montpellier, Montpellier, France
- CSERD, CHU Montpellier, Montpellier, France
- UFR Odontologie, Univ. Montpellier, Montpellier, France
| |
Collapse
|
2
|
Adly MS, Adly AS, Younes R, El Helou M, Panayotov I, Cuisinier F, Carayon D, Estephan E. Prevention and repair of orthodontically induced root resorption using ultrasound: a scoping review. Expert Rev Med Devices 2023. [PMID: 37294872 DOI: 10.1080/17434440.2023.2223965] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 06/06/2023] [Indexed: 06/11/2023]
Abstract
INTRODUCTION This review summarizes the available recent literature on different mechanisms and parameters of pulsed ultrasound (US) that have been used during orthodontic treatments to prevent and repair root resorption. AREAS COVERED A literature search was conducted between January (2002) and September (2022) in the following databases: PubMed, Google-Scholar, Embase and The-Cochrane-Library. After exclusions, a total of 19 papers were included in the present review. The most used US parameters with positive outcomes were frequency of 1.5 MHz, pulse repetition frequency of 1000 Hz, output intensity of 30 mW/cm2, duration of application of 20 mins and total number sessions were 14 with a repetition interval of 1day. The suggested mechanisms induced by US were alteration of cementoblasts, osteoblasts, osteoclasts, alkaline-phosphatase (ALP), runt-related-gene-2 (Runx2), osteoprotegerin (OPG), type-I-collagen (Col-I), C-telopeptide-type-I-collagen (CTX-I), hepatocyte-growth-factor (HGF), bone morphogenetic protein-2 (BMP-2), cyclooxygenase-2 (Cox-2), calcium (Ca2+), receptor activator of nuclear factor-kappa-B ligand (RANKL), and receptor activator of nuclear factor-kappa-B (RANK). EXPERT OPINION Understanding mechanisms and deciding which parameters of US that can be used during orthodontic treatment to prevent and repair root resorption is a great challenge. This work summarizes all the available data that can aid this process and suggest that US is an effective noninvasive method not only in prevention and repairing of orthodontic induced root resorption but also in accelerating teeth movement.
Collapse
Affiliation(s)
| | | | - Richard Younes
- Institute for Neurosciences of Montpellier (INM), Univ Montpellier, Inserm, Montpellier, France
- Neuroscience Research Center, Faculty of Medical Sciences, Lebanese University, Beirut, Lebanon
| | - Marwan El Helou
- LBN, Univ Montpellier, Montpellier, France
- CHU Clermont-Ferrand, Service d'Odontologie, Clermont-Ferrand, France
| | - Ivan Panayotov
- LBN, Univ Montpellier, Montpellier, France
- CSERD, CHU Montpellier, Montpellier, France
- UFR Odontologie, Univ. Montpellier, Montpellier, France
| | - Frederic Cuisinier
- LBN, Univ Montpellier, Montpellier, France
- CSERD, CHU Montpellier, Montpellier, France
- UFR Odontologie, Univ. Montpellier, Montpellier, France
| | - Delphine Carayon
- LBN, Univ Montpellier, Montpellier, France
- CSERD, CHU Montpellier, Montpellier, France
- UFR Odontologie, Univ. Montpellier, Montpellier, France
| | - Elias Estephan
- LBN, Univ Montpellier, Montpellier, France
- Neuroscience Research Center, Faculty of Medical Sciences, Lebanese University, Beirut, Lebanon
| |
Collapse
|
3
|
Desoutter A, Slimani A, Tassery H, Cuisinier F, Sauro S, Salehi H, Panayotov I. Confocal Raman data analysis of tufts and spindles at the human dentin-enamel junction. Arch Oral Biol 2021; 131:105262. [PMID: 34543810 DOI: 10.1016/j.archoralbio.2021.105262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 06/01/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The aim of this article is to analyze the chemical mapping of tufts and spindles of the human dental enamel using confocal Raman microscopy measuring length, structuration and composition of spindles and tufts. DESIGN we used Raman diffusion, based on the interaction between photons and optic phonons, to reveal chemical bound. Adult molars were selected and longitudinally sectioned. Areas of 120 * 120 μm were scanned near the dentin-enamel junction and grooves. Spectra were collected and phosphate and proteins peak intensities images were reconstructed, related to HPA concentration. Images of Phosphate (PO43-, 960 cm-1) and protein (CH, 2800/3000 cm-1) intensities have been reconstructed. K-mean cluster has been calculated to compare centroid spectra from enamel, dentin and tuft or spindle. RESULTS intensity profile revealed spindles as less mineralized areas than enamel, from 5 to 10 µm large. In the groove of molar, long tufts were found, more than 150 µm. CONCLUSIONS Confocal Raman microscopy is a very interesting tool to characterize chemically secondary structure of enamel. The size of a tuft in the groove allows us make the hypothesis that they could play a role in long term resilience of mechanical stress.
Collapse
Affiliation(s)
| | | | - Hervé Tassery
- LBN, Univ Montpellier, Montpellier, France; Université d'Aix-Marseille, Marseille, France
| | | | - Salavatore Sauro
- Dental Biomaterials and Minimally Invasive Dentistry, Department of Dentistry, Cardenal Herrera-CEU University, CEU Universities, C/Santiago Ramón y Cajal, s/n., Alfara del Patriarca, 46115 Valencia, Spain
| | | | | |
Collapse
|
4
|
Orti V, Collart-Dutilleul PY, Piglionico S, Pall O, Cuisinier F, Panayotov I. Pulp Regeneration Concepts for Nonvital Teeth: From Tissue Engineering to Clinical Approaches. Tissue Eng Part B Rev 2018; 24:419-442. [PMID: 29724156 DOI: 10.1089/ten.teb.2018.0073] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Following the basis of tissue engineering (Cells-Scaffold-Bioactive molecules), regenerative endodontic has emerged as a new concept of dental treatment. Clinical procedures have been proposed by endodontic practitioners willing to promote regenerative therapy. Preserving pulp vitality was a first approach. Later procedures aimed to regenerate a vascularized pulp in necrotic root canals. However, there is still no protocol allowing an effective regeneration of necrotic pulp tissue either in immature or mature teeth. This review explores in vitro and preclinical concepts developed during the last decade, especially the potential use of stem cells, bioactive molecules, and scaffolds, and makes a comparison with the goals achieved so far in clinical practice. Regeneration of pulp-like tissue has been shown in various experimental conditions. However, the appropriate techniques are currently in a developmental stage. The ideal combination of scaffolds and growth factors to obtain a complete regeneration of the pulp-dentin complex is still unknown. The use of stem cells, especially from pulp origin, sounds promising for pulp regeneration therapy, but it has not been applied so far for clinical endodontics, in case of necrotic teeth. The gap observed between the hope raised from in vitro experiments and the reality of endodontic treatments suggests that clinical success may be achieved without external stem cell application. Therefore, procedures using the concept of cell homing, through evoked bleeding that permit to recreate a living tissue that mimics the original pulp has been proposed. Perspectives for pulp tissue engineering in the near future include a better control of clinical parameters and pragmatic approach of the experimental results (autologous stem cells from cell homing, controlled release of growth factors). In the coming years, this therapeutic strategy will probably become a clinical reality, even for mature necrotic teeth.
Collapse
Affiliation(s)
- Valérie Orti
- LBN, Université de Montpellier , Montpellier, France
| | | | | | - Orsolya Pall
- LBN, Université de Montpellier , Montpellier, France
| | | | | |
Collapse
|
5
|
Györgyey Á, Janovák L, Ádám A, Kopniczky J, Tóth KL, Deák Á, Panayotov I, Cuisinier F, Dékány I, Turzó K. Investigation of the in vitro photocatalytic antibacterial activity of nanocrystalline TiO2 and coupled TiO2/Ag containing copolymer on the surface of medical grade titanium. J Biomater Appl 2016; 31:55-67. [DOI: 10.1177/0885328216633374] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Antibacterial surfaces have been in the focus of research for years, driven by an unmet clinical need to manage an increasing incidence of implant-associated infections. The use of silver has become a topic of interest because of its proven broad-spectrum antibacterial activity and track record as a coating agent of soft tissue implants and catheters. However, for the time being, the translation of these technological achievements for the improvement of the antibacterial property of hard tissue titanium (Ti) implants remains unsolved. In our study, we focused on the investigation of the photocatalysis mediated antibacterial activity of silver (Ag), and Ti nanoparticles instead of their pharmacological effects. We found that the photosensitisation of commercially pure titanium discs by coating them with an acrylate-based copolymer that embeds coupled Ag/Ti nanoparticles can initiate the photocatalytic decomposition of adsorbed S. salivarius after the irradiation with an ordinary visible light source. The clinical isolate of S. salivarius was characterised with MALDI-TOF mass spectrometer, while the multiplication of the bacteria on the surface of the discs was followed-up by MTT assay. Concerning practical relevance, the infected implant surfaces can be made accessible and irradiated by dental curing units with LED and plasma arc light sources, our research suggests that photocatalytic copolymer coating films may offer a promising solution for the improvement of the antibacterial properties of dental implants.
Collapse
Affiliation(s)
- Ágnes Györgyey
- Department of Prosthodontics, Faculty of Dentistry, University of Szeged, Hungary
| | - László Janovák
- Department of Physical Chemistry and Material Sciences, Faculty of Science and Informatics, University of Szeged, Hungary
| | - András Ádám
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Hungary
| | - Judit Kopniczky
- Department of Optics and Quantum Electronics, Faculty of Science and Informatics, University of Szeged, Hungary
| | | | - Ágota Deák
- Department of Physical Chemistry and Material Sciences, Faculty of Science and Informatics, University of Szeged, Hungary
| | - Ivan Panayotov
- Laboratoire Biosanté et Nanoscience, UFR Odontologie, University of Montpellier I, France
| | - Frédéric Cuisinier
- Laboratoire Biosanté et Nanoscience, UFR Odontologie, University of Montpellier I, France
| | - Imre Dékány
- MTA-SZTE Supramolecular and Nanostructured Materials Research Group, Faculty of Medicine, University of Szeged, Hungary
| | - Kinga Turzó
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Hungary
| |
Collapse
|
6
|
Renaud M, Farkasdi S, Pons C, Panayotov I, Collart-Dutilleul PY, Taillades H, Desoutter A, Bousquet P, Varga G, Cuisinier F, Yachouh J. A New Rat Model for Translational Research in Bone Regeneration. Tissue Eng Part C Methods 2016; 22:125-131. [PMID: 26472155 DOI: 10.1089/ten.tec.2015.0187] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The European Union (EU) directive 2010/63/EU on the protection of animals used for scientific purpose focused on reducing the number of animals and refinement of breeding. Animal studies are necessary to protect human health. Lots of animal models exist to study bone regeneration, but a reliable, well reproducible, and relatively inexpensive model with the possibility for multiple testing in the same animal is still missing. Rats may serve as good models for this due to the small animal size and good cost/benefit ratio. The present study aimed to develop a novel rat caudal vertebrae critical size defect model for bone regeneration and implant osseointegration studies The study was performed using Wistar rats with weight from 380 to 450 g. An incision was made on the dorsal side of the tail. After skin and muscles retractions, the vertebrae were exposed. Critical size defects for bone tissue engineering or implant placements for titanium body experiments were possible in each of the first four caudal vertebrae. Micro-computed tomography (CT) and histology were used to detect bone growth. There was no bone formation in the defects after 1 or 2 months of healing. When a calcium phosphate biomaterial was used (Bio-Oss®; Geistlich Pharma AG, Wolhusen, Switzerland), a good stability of the material in the defect was noted and bone growth was visible after 1 or 2 months. Results based on implant placement showed good primary stability after 3 months of healing. MicroCT showed integrated implant position through the vertebra. These results suggest that the rat caudal vertebrae may serve as a good new model for studying bone regeneration and implant osseointegration with the possibility of multiple testing within the same experimental animal and the potential to decrease number of experimental animals.
Collapse
Affiliation(s)
- Matthieu Renaud
- 1 Laboratoire Bioingénierie et Nanosciences EA4203, Université Montpellier , Montpellier, France
| | - Sandor Farkasdi
- 2 Department of Oral Biology, Semmelweis University , Budapest, Hungary
| | - Coline Pons
- 1 Laboratoire Bioingénierie et Nanosciences EA4203, Université Montpellier , Montpellier, France
| | - Ivan Panayotov
- 1 Laboratoire Bioingénierie et Nanosciences EA4203, Université Montpellier , Montpellier, France
| | | | - Hubert Taillades
- 3 Animalerie, Faculté de médecine, Université Montpellier, Montpellier, France
| | - Alban Desoutter
- 1 Laboratoire Bioingénierie et Nanosciences EA4203, Université Montpellier , Montpellier, France
| | - Philippe Bousquet
- 1 Laboratoire Bioingénierie et Nanosciences EA4203, Université Montpellier , Montpellier, France
| | - Gabor Varga
- 2 Department of Oral Biology, Semmelweis University , Budapest, Hungary
| | - Frédéric Cuisinier
- 1 Laboratoire Bioingénierie et Nanosciences EA4203, Université Montpellier , Montpellier, France
| | - Jacques Yachouh
- 1 Laboratoire Bioingénierie et Nanosciences EA4203, Université Montpellier , Montpellier, France
| |
Collapse
|
7
|
Slimani A, Nouioua F, Panayotov I, Giraudeau N, Chiaki K, Shinji Y, Cloitre T, Levallois B, Gergely C, Cuisinier F, Tassery H. Porphyrin and Pentosidine Involvement in the Red Fluorescence of Enamel and Dentin Caries. ACTA ACUST UNITED AC 2016. [DOI: 10.5005/jp-journals-10029-1115] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
ABSTRACT
Proper treatment of dental caries demands detection of carious lesions at an early stage and a minimal invasive cavity preparation to preserve the maximum tooth structure. Various devices use fluorescence for caries detection via recording the red fluorescence generated by dentin caries under illumination. The aim of this study was to evaluate the porphyrin and pentosidine involvement in the red fluorescence observed in enamel and dentin caries when illuminated with the Soprolife® camera (Sopro, Acteon Group, La Ciotat, France) and Vistacam® camera (Dürr Dental AG, Bietigheim-Bissingen, Germany). Three techniques were used: single photon fluorescence spectroscopy, micro-Raman spectroscopy, and color analysis with ImajeJ software. Cross-sections of human teeth, scored from 0–6 with the International Caries Detection and Assessment System (ICDAS), were examined by fluorescence microscopy. Teeth spectra of each ICDAS score were compared with those of protoporphyrin IX (PpIX), porphyrin I, and pentosidine solutions. A specific confocal Raman microscopy analysis was realized and a Red–Green–Blue model analysis of Soprolife® images was performed using ImageJ software to compare the color variations on ICDAS score 1 and 2. Fluorescence spectroscopy and micro-Raman spectroscopy revealed the presence of PpIX in carious enamel and dentin. The clinical relevance of this experimentation was that the increased knowledge of the fluorescence aids for caries detection could improve the preventive approach, thus reducing the operative one.
How to cite this article
Slimani A, Nouioua F, Panayotov I, Giraudeau N, Chiaki K, Shinji Y, Cloitre T, Levallois B, Gergely C, Cuisinier F, Tassery H. Porphyrin and Pentosidine Involvements in the Red Fluorescence of Enamel and Dentin Caries. Int J Experiment Dent Sci 2016;5(1):1-10.
Collapse
|
8
|
Collart-Dutilleul PY, Panayotov I, Secret E, Cunin F, Gergely C, Cuisinier F, Martin M. Initial stem cell adhesion on porous silicon surface: molecular architecture of actin cytoskeleton and filopodial growth. Nanoscale Res Lett 2014; 9:564. [PMID: 25386101 PMCID: PMC4217708 DOI: 10.1186/1556-276x-9-564] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 07/25/2014] [Indexed: 02/08/2023]
Abstract
The way cells explore their surrounding extracellular matrix (ECM) during development and migration is mediated by lamellipodia at their leading edge, acting as an actual motor pulling the cell forward. Lamellipodia are the primary area within the cell of actin microfilaments (filopodia) formation. In this work, we report on the use of porous silicon (pSi) scaffolds to mimic the ECM of mesenchymal stem cells from the dental pulp (DPSC) and breast cancer (MCF-7) cells. Our atomic force microscopy (AFM), fluorescence microscopy, and scanning electron microscopy (SEM) results show that pSi promoted the appearance of lateral filopodia protruding from the DPSC cell body and not only in the lamellipodia area. The formation of elongated lateral actin filaments suggests that pores provided the necessary anchorage points for protrusion growth. Although MCF-7 cells displayed a lower presence of organized actin network on both pSi and nonporous silicon, pSi stimulated the formation of extended cell protrusions.
Collapse
Affiliation(s)
| | - Ivan Panayotov
- BioNano Laboratory EA 4203, Université Montpellier 1, Montpellier 34193, France
| | - Emilie Secret
- Matériaux Avancés Catalyse Santé, Institut Charles Gerhardt, UMR 5253 CNRS, Montpellier 34296, France
| | - Frédérique Cunin
- Matériaux Avancés Catalyse Santé, Institut Charles Gerhardt, UMR 5253 CNRS, Montpellier 34296, France
| | - Csilla Gergely
- Laboratoire Charles Coulomb UMR 5221, Université Montpellier 2, Montpellier 34095, France ; Laboratoire Charles Coulomb UMR 5221, CNRS, Montpellier 34095, France
| | - Frédéric Cuisinier
- BioNano Laboratory EA 4203, Université Montpellier 1, Montpellier 34193, France
| | - Marta Martin
- Laboratoire Charles Coulomb UMR 5221, Université Montpellier 2, Montpellier 34095, France ; Laboratoire Charles Coulomb UMR 5221, CNRS, Montpellier 34095, France
| |
Collapse
|
9
|
Zheleva D, Todorovska E, Jacquemin JM, Atanassov A, Christov N, Panayotov I, Tsenov N. Allele Distribution at Microsatellite Locus Xgwm 261 Marking the Dwarfing Gene Rht8 in Hexaploid Wheat from Bulgarian and Belgian Gene Bank Collections and its Application in Breeding Programs. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2006.10817341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|
10
|
Tassery H, Levallois B, Terrer E, Manton DJ, Otsuki M, Koubi S, Gugnani N, Panayotov I, Jacquot B, Cuisinier F, Rechmann P. Use of new minimum intervention dentistry technologies in caries management. Aust Dent J 2014; 58 Suppl 1:40-59. [PMID: 23721337 DOI: 10.1111/adj.12049] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Preservation of natural tooth structure requires early detection of the carious lesion and is associated with comprehensive patient dental care. Processes aiming to detect carious lesions in the initial stage with optimum efficiency employ a variety of technologies such as magnifying loupes, transillumination, light and laser fluorescence (QLF® and DIAGNOdent® ) and autofluorescence (Soprolife® and VistaCam®), electric current/impedance (CarieScan(®) ), tomographic imaging and image processing. Most fluorescent caries detection tools can discriminate between healthy and carious dental tissue, demonstrating different levels of sensitivity and specificity. Based on the fluorescence principle, an LED camera (Soprolife® ) was developed (Sopro-Acteon, La Ciotat, France) which combined magnification, fluorescence, picture acquisition and an innovative therapeutic concept called light-induced fluorescence evaluator for diagnosis and treatment (LIFEDT). This article is rounded off by a Soprolife® illustration about minimally or even non-invasive dental techniques, distinguishing those that preserve or reinforce the enamel and enamel-dentine structures without any preparation (MIT1- minimally invasive therapy 1) from those that require minimum preparation of the dental tissues (MIT2 - minimally invasive therapy 2) using several clinical cases as examples. MIT1 encompasses all the dental techniques aimed at disinfection, remineralizing, reversing and sealing the caries process and MIT2 involves a series of specific tools, including microburs, air abrasion devices, sonic and ultrasonic inserts and photo-activated disinfection to achieve minimal preparation of the tooth. With respect to minimally invasive treatment and prevention, the use of lasers is discussed. Furthermore, while most practices operate under a surgical model, Caries Management by Risk Assessment (CaMBRA) encourages a medical model of disease prevention and management to control the manifestation of the disease, or keep the oral environment in a state of balance between pathological and preventive factors. Early detection and diagnosis and prediction of lesion activity are of great interest and may change traditional operative procedures substantially. Fluorescence tools with high levels of magnification and observational capacity should guide clinicians towards a more preventive and minimally invasive treatment strategy.
Collapse
Affiliation(s)
- H Tassery
- UFR Odontologie, Université Montpellier 1, Montpellier Cedex, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Collart-Dutilleul PY, Secret E, Panayotov I, Deville de Périère D, Martín-Palma RJ, Torres-Costa V, Martin M, Gergely C, Durand JO, Cunin F, Cuisinier FJ. Adhesion and proliferation of human mesenchymal stem cells from dental pulp on porous silicon scaffolds. ACS Appl Mater Interfaces 2014; 6:1719-28. [PMID: 24428409 DOI: 10.1021/am4046316] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In regenerative medicine, stem-cell-based therapy often requires a scaffold to deliver cells and/or growth factors to the injured site. Porous silicon (pSi) is a promising biomaterial for tissue engineering as it is both nontoxic and bioresorbable. Moreover, surface modification can offer control over the degradation rate of pSi and can also promote cell adhesion. Dental pulp stem cells (DPSC) are pluripotent mesenchymal stem cells found within the teeth and constitute a readily source of stem cells. Thus, coupling the good proliferation and differentiation capacities of DPSC with the textural and chemical properties of the pSi substrates provides an interesting approach for therapeutic use. In this study, the behavior of human DPSC is analyzed on pSi substrates presenting pores of various sizes, 10 ± 2 nm, 36 ± 4 nm, and 1.0 ± 0.1 μm, and undergoing different chemical treatments, thermal oxidation, silanization with aminopropyltriethoxysilane (APTES), and hydrosilylation with undecenoic acid or semicarbazide. DPSC adhesion and proliferation were followed for up to 72 h by fluorescence microscopy, scanning electron microscopy (SEM), enzymatic activity assay, and BrdU assay for mitotic activity. Porous silicon with 36 nm pore size was found to offer the best adhesion and the fastest growth rate for DPSC compared to pSi comporting smaller pore size (10 nm) or larger pore size (1 μm), especially after silanization with APTES. Hydrosilylation with semicarbazide favored cell adhesion and proliferation, especially mitosis after cell adhesion, but such chemical modification has been found to led to a scaffold that is stable for only 24-48 h in culture medium. Thus, semicarbazide-treated pSi appeared to be an appropriate scaffold for stem cell adhesion and immediate in vivo transplantation, whereas APTES-treated pSi was found to be more suitable for long-term in vitro culture, for stem cell proliferation and differentiation.
Collapse
|
12
|
Estephan E, Dao J, Saab MB, Panayotov I, Martin M, Larroque C, Gergely C, Cuisinier FJG, Levallois B. SVSVGMKPSPRP: a broad range adhesion peptide. ACTA ACUST UNITED AC 2013. [PMID: 23183721 DOI: 10.1515/bmt-2011-0109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND A combinatorial phage display approach was previously used to evolve a 12-mer peptide (SVSVGMKPSPRP) with the highest affinity for different semiconductor surfaces. The discovery of the multiple occurrences of the SVSVGMKPSPRP sequence in an all-against-all basic local alignment search tool search of PepBank sequences was unexpected, and a Google search using the peptide sequence recovered 58 results concerning 12 patents and 16 scientific publications. The number of patent and articles indicates that the peptide is perhaps a broad range adhesion peptide. METHODS To evaluate peptide properties, we conducted a study to investigate peptide adhesion on different inorganic substrates by mass spectrometry and atomic force microscopy for gold, carbon nanotubes, cobalt, chrome alloy, titanium, and titanium alloy substrates. RESULTS Our results showed that the peptide has a great potential as a linker to functionalize metallic surfaces if specificity is not a key factor. This peptide is not specific to a particular metal surface, but it is a good linker for the functionalization of a wide range of metallic materials. CONCLUSION The fact that this peptide has the potential to adsorb on a large set of inorganic surfaces suggests novel promising directions for further investigation. Affinity determination of SVSVGMKPSPRP peptide would be an important issue for eventual commercial uses.
Collapse
Affiliation(s)
- Elias Estephan
- Université Montpellier 2, Laboratoire Charles Coulomb UMR 5221, F-34095, Montpellier, France
| | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Salehi H, Terrer E, Panayotov I, Levallois B, Jacquot B, Tassery H, Cuisinier F. Functional mapping of human sound and carious enamel and dentin with Raman spectroscopy. J Biophotonics 2013; 6:765-774. [PMID: 22996995 DOI: 10.1002/jbio.201200095] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 07/22/2012] [Accepted: 07/30/2012] [Indexed: 06/01/2023]
Abstract
The goals of this trial were, first, to produce a Raman mapping of decay and sound dentin samples, through accurate analysis of the Raman band spectra variations of mineral and organic components. The second goal was to confirm the correlation between the Raman signal and the signal of a fluorescent camera, by assaying the concentration of pentosidine and natural collagen fluorescent crosslink using reverse phase high-pressure liquid chromatography. The first correlation assumed a possible relationship between the signal observed with the camera and Raman spectroscopy. The second correlation assumed an association with the Maillard reaction. Absence of a correlation for this trial was that no association could be found between Raman spectra characteristics, fluorescence variation and the HPLC assay. Our results void this absence.
Collapse
Affiliation(s)
- Hamideh Salehi
- Laboratory of Biology and Nano-science, EA4203, Montpellier University 1, 545 av du Pr Viala, 34193 cedex 5, Montpellier, France
| | | | | | | | | | | | | |
Collapse
|
14
|
Salehi H, Middendorp E, Panayotov I, Collart Dutilleul PY, Vegh AG, Ramakrishnan S, Gergely C, Cuisinier F. Errata: Confocal Raman data analysis enables identifying apoptosis of MCF-7 cells caused by anticancer drug paclitaxel. J Biomed Opt 2013. [DOI: 10.1117/1.jbo.18.5.059801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
15
|
Salehi H, Middendorp E, Panayotov I, Collart Dutilleul PY, Vegh AG, Ramakrishnan S, Gergely C, Cuisinier F. Confocal Raman data analysis enables identifying apoptosis of MCF-7 cells caused by anticancer drug paclitaxel. J Biomed Opt 2013; 18:56010. [PMID: 23698321 DOI: 10.1117/1.jbo.18.5.056010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Confocal Raman microscopy is a noninvasive, label-free imaging technique used to study apoptosis of live MCF-7 cells. The images are based on Raman spectra of cells components, and their apoptosis is monitored through diffusion of cytochrome c in cytoplasm. K-mean clustering is used to identify mitochondria in cells, and correlation analysis provides the cytochrome c distribution inside the cells. Our results demonstrate that incubation of cells for 3 h with 10 μM of paclitaxel does not induce apoptosis in MCF-7 cells. On the contrary, incubation for 30 min at a higher concentration (100 μM) of paclitaxel induces gradual release of the cytochrome c into the cytoplasm, indicating cell apoptosis via a caspase independent pathway.
Collapse
Affiliation(s)
- Hamideh Salehi
- Université Montpellier 1, Laboratoire Biologie-Santé Nanosciences, EA 4203, UFR Odontologie, 34193 Montpellier, France.
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Collart-Dutilleul PY, Secret E, Panayotov I, Gergely C, Cunin F, Cuisinier F. Human dental pulp stem cells growth and osteodifferentiation on porous resorbable scaffolds. Bull Group Int Rech Sci Stomatol Odontol 2012; 51:e03. [PMID: 25460782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 11/14/2012] [Indexed: 06/04/2023]
Abstract
Short Communication selected from the Oral Presentations of the 56th Congress of the Groupèment International pour la Recherche Scientifique en Stomatologie et Odontologie, Peñafiel (Portugal) May 2012.
Collapse
|
17
|
Panayotov I, Végh AG, Martin M, Collart-Dutilleul PY, Gergely C, Vladim Rov B, Cuisinier F. [Not Available]. Bull Group Int Rech Sci Stomatol Odontol 2012; 51:e05. [PMID: 25460783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Indexed: 06/04/2023]
Abstract
Short Communication selected from the Oral Presentations of the 56th Congress of the Groupèment International pour la Recherche Scientifique en Stomatologie et Odontologie, Peñafiel (Portugal) May 2012.
Collapse
|
18
|
Collard-Dutilleul PY, Secret E, Panayotov I, Gergely C, Cunin F, Cuisinier F. Dental pulp stem cells adhesion on surface-modified porous silicon: towards a scaffold for regenerative medicine. Bull Group Int Rech Sci Stomatol Odontol 2011; 50:47-51. [PMID: 22750601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Accepted: 09/23/2011] [Indexed: 06/01/2023]
Affiliation(s)
- P-Y Collard-Dutilleul
- Laboratoire Biosanté Nanoscience EA 4203, Université Montpellier, 545 Av Pr JL Viala 34193 Montpellier, France
| | | | | | | | | | | |
Collapse
|
19
|
Abstract
Studies of pure phospholipid monolayers or various well defined lipid mixtures have greatly contributed to the current knowledge of the relationship between monolayer composition and its properties and to understand how their physicochemical properties, e.g. refraction, polarization, are controlled by structural variations at the molecular level. Therefore, an attempt was made to investigate model lipid molecules adsorbed on the air/water interface. Semi-empirical (AM1) quantum chemical calculations were performed for several clusters and were compared with experimental data. The optimized acidic molecules show a marked tendency to group forming domains. An increase in the number of surfactant molecules in the cluster leads to a decrease in the effective headgroup area. On the other hand, the area grows with the increase of the degree of ionization. Both relations are in accordance with the experimental trends and the electrostatic theory. The employed theoretical approach proves to be applicable to the study of monolayers, thus providing a reliable description at molecular level of the traditionally phenomenological investigations in the field.
Collapse
Affiliation(s)
- A Ivanova
- Department of Physical Chemistry, University of Sofia, Bulgaria.
| | | | | | | |
Collapse
|
20
|
Milkova V, Ivanov P, Atanassov Z, Todorov I, Panayotov I. Callus Culture and Gamma-Ray Treatment used for Inducing New Breeding Material in Wheat ( Tr.Aestivum L.). BIOTECHNOL BIOTEC EQ 1995. [DOI: 10.1080/13102818.1995.10818838] [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: 10/25/2022] Open
|
21
|
Rashkov I, Panayotov I, Gitsov I. Mechanism of the anionic polymerization of lactones, initiated by intercalation graphite compounds. Polym Bull (Berl) 1981. [DOI: 10.1007/bf01045246] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
22
|
Panayotov I. New cytoplasmic male sterility sources in common wheat: Their genetical and breeding considerations. Theor Appl Genet 1980; 56:153-160. [PMID: 24305794 DOI: 10.1007/bf00286677] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/1979] [Accepted: 08/02/1979] [Indexed: 06/02/2023]
Abstract
Nuclei from Triticum aestivum L. cultivars 'Penjamo 62' and 'Siete Cerros 66' were introduced into the cytoplasms of different species of Aegilops and some subspecies (varieties) of T. dicoccoides by backcrossing. The sterile alloplasmic lines obtained were compared with the normal cultivars used as the recurrent pollen parents. According to the cytoplasmic effect, these cytoplasms were subdivided into three main groups. The first group possesses C(u) type cytoplasm, the second one possesses M type and the third group includes S, C and G type. Promising male sterile cytoplasms for hybrid wheat production were found in Ae. mutica, Ae. triuncialis and T. dicoccoides var. 'spontaneovillosum'. Based on these results and other information some conjectures were made concerning hybrid wheat breeding and phylogenetic differentiations of the cytoplasm.
Collapse
Affiliation(s)
- I Panayotov
- Institute for Wheat and Sunflower, Tolbuhin, Bulgaria
| |
Collapse
|
23
|
Merle G, Pascault JP, Pham QT, Pillot C, Salle R, Golé J, Rashkov I, Panayotov I, Guérard D, Hérold A. Polymérisation anionique amorcée par les composés lamellaires du graphite et du lithium. ACTA ACUST UNITED AC 1977. [DOI: 10.1002/pol.1977.170150903] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
24
|
|
25
|
Tsvetanov C, Sgonnik V, Panayotov I, Erussalimsky B. Langkettige alkalimetallorganische Verbindungen vom Typ RCH2CH(CN)M: Herstellung, spektroskopische und elektrochemische Charakterisierung. European J Org Chem 1972. [DOI: 10.1002/jlac.19727630106] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|