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Livecchi TT, Jacques SL, Subhash HM, Pierce MC. Hyperspectral imaging with deep learning for quantification of tissue hemoglobin, melanin, and scattering. JOURNAL OF BIOMEDICAL OPTICS 2024; 29:093507. [PMID: 39247058 PMCID: PMC11378079 DOI: 10.1117/1.jbo.29.9.093507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 08/20/2024] [Accepted: 08/20/2024] [Indexed: 09/10/2024]
Abstract
Significance Hyperspectral cameras capture spectral information at each pixel in an image. Acquired spectra can be analyzed to estimate quantities of absorbing and scattering components, but the use of traditional fitting algorithms over megapixel images can be computationally intensive. Deep learning algorithms can be trained to rapidly analyze spectral data and can potentially process hyperspectral camera data in real time. Aim A hyperspectral camera was used to capture 1216 × 1936 pixel wide-field reflectance images of in vivo human tissue at 205 wavelength bands from 420 to 830 nm. Approach The optical properties of oxyhemoglobin, deoxyhemoglobin, melanin, and scattering were used with multi-layer Monte Carlo models to generate simulated diffuse reflectance spectra for 24,000 random combinations of physiologically relevant tissue components. These spectra were then used to train an artificial neural network (ANN) to predict tissue component concentrations from an input reflectance spectrum. Results The ANN achieved low root mean square errors in a test set of 6000 independent simulated diffuse reflectance spectra while calculating concentration values more than 4000× faster than a conventional iterative least squares approach. Conclusions In vivo finger occlusion and gingival abrasion studies demonstrate the ability of this approach to rapidly generate high-resolution images of tissue component concentrations from a hyperspectral dataset acquired from human subjects.
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Affiliation(s)
- Thomas T Livecchi
- Rutgers, The State University of New Jersey, Department of Biomedical Engineering, Piscataway, New Jersey, United States
- Colgate-Palmolive Company, Global Technology and Design Center, Piscataway, New Jersey, United States
| | - Steven L Jacques
- University of Washington, Department of Bioengineering, Seattle, Washington, United States
| | - Hrebesh M Subhash
- Colgate-Palmolive Company, Global Technology and Design Center, Piscataway, New Jersey, United States
| | - Mark C Pierce
- Rutgers, The State University of New Jersey, Department of Biomedical Engineering, Piscataway, New Jersey, United States
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2
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Samal A, Chan HL, Wang IC, Webber L, Gallagher S, Majzoub J, Barootchi S, Mazzocco J, Betancourt AR, Castilho R, Masotti M, Kripfgans OD. Use of High-Frequency Ultrasound for the Correlation of Epithelial Rete Peg Variation. ULTRASOUND IN MEDICINE & BIOLOGY 2024:S0301-5629(24)00236-9. [PMID: 39142939 DOI: 10.1016/j.ultrasmedbio.2024.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 05/23/2024] [Accepted: 06/07/2024] [Indexed: 08/16/2024]
Abstract
OBJECTIVE Rete pegs are projections of the oral epithelium into connective tissue. Their dimensions change during pathological conditions and may correlate with wound-healing status. Non-invasive, high-frequency ultrasound (US) may be able to capture these changes and aid in early detection of histopathological changes. The aim of this preclinical study is to correlate US images with histology and quantify epithelial layers at different tooth sites. METHODS Sagittal B-mode images of mid-facial and interproximal oral soft tissue sites were recorded in a preclinical minipig model using a linear array in second harmonic mode (12/24 MHz). Histology samples from the same locations were stained (hematoxylin and eosin), digitized and registered with US images. Manual annotations were used to measure distances D1 (thickness of epithelium on histology vs. hyperechoic zone on US) and D2 (sum of epithelial thickness and length of rete pegs on histology vs. sum of hyperechoic and hypoechoic zone on US) to statistically analyze them. RESULTS Ultrasonic-derived dimensions yielded a mean bias of -0.64 (55% coefficient of variance [COV]: -180 to +180 µm) and -12 µm (39% COV: -260 to +240 µm) for D1 and D2, respectively. Individualized analysis of D1 and D2 by tooth type showed similar tends in the ability to differentiate between epithelium at different tooth locations, on both histology and US. CONCLUSION Assessing soft tissue dimensions on a sub-millimeter scale using clinical imaging hardware is still a developing area. Future research might open doors for diagnosis of oral pathologies and abnormal wound healing, and may limit false-positive indications for biopsies.
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Affiliation(s)
- Ankita Samal
- Department of Radiology, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA; Department of Periodontology, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, USA
| | - Hsun-Liang Chan
- Department of Periodontology and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA; Department of Periodontology, Ohio State University College of Dentistry, Columbus, OH, USA
| | - I-Ching Wang
- Department of Periodontology, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, USA; Department of Periodontology and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Liana Webber
- Department of Periodontology and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Sarah Gallagher
- Department of Radiology, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Jad Majzoub
- Department of Periodontology and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Shayan Barootchi
- Department of Periodontology and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - John Mazzocco
- Department of Periodontology and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Amanda Rodriguez Betancourt
- Department of Periodontology and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA; Department of Periodontology, University of Illinois Chicago College of Dentistry, Chicago, IL, USA
| | - Rogerio Castilho
- Department of Periodontology and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Maria Masotti
- Department of Radiology, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Oliver D Kripfgans
- Department of Radiology, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA.
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3
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Malone J, Hill C, Tanskanen A, Liu K, Ng S, MacAulay C, Poh CF, Lane PM. Imaging Biomarkers of Oral Dysplasia and Carcinoma Measured with In Vivo Endoscopic Optical Coherence Tomography. Cancers (Basel) 2024; 16:2751. [PMID: 39123478 PMCID: PMC11311571 DOI: 10.3390/cancers16152751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2024] [Revised: 07/27/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024] Open
Abstract
Optical coherence tomography is a noninvasive imaging technique that provides three-dimensional visualization of subsurface tissue structures. OCT has been proposed and explored in the literature as a tool to assess oral cancer status, select biopsy sites, or identify surgical margins. Our endoscopic OCT device can generate widefield (centimeters long) imaging of lesions at any location in the oral cavity-but it is challenging for raters to quantitatively assess and score large volumes of data. Leveraging a previously developed epithelial segmentation network, this work develops quantifiable biomarkers that provide direct measurements of tissue properties in three dimensions. We hypothesize that features related to morphology, tissue attenuation, and contrast between tissue layers will be able to provide a quantitative assessment of disease status (dysplasia through carcinoma). This work retrospectively assesses seven biomarkers on a lesion-contralateral matched OCT dataset of the lateral and ventral tongue (40 patients, 70 sites). Epithelial depth and loss of epithelial-stromal boundary visualization provide the strongest discrimination between disease states. The stroma optical attenuation coefficient provides a distinction between benign lesions from dysplasia and carcinoma. The stratification biomarkers visualize subsurface changes, which provides potential for future utility in biopsy site selection or treatment margin delineation.
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Affiliation(s)
- Jeanie Malone
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada (P.M.L.)
- School of Biomedical Engineering, University of British Columbia, 251-2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
| | - Chloe Hill
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada (P.M.L.)
- School of Engineering Science, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Adrian Tanskanen
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada (P.M.L.)
- School of Biomedical Engineering, University of British Columbia, 251-2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
| | - Kelly Liu
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada (P.M.L.)
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 350-2194 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
| | - Samson Ng
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 350-2194 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
| | - Calum MacAulay
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada (P.M.L.)
- Department of Pathology and Laboratory Medicine, University of British Columbia and Vancouver General Hospital, G227-2211 Wesbrook Mall, Vancouver, BC V6 T 1Z7, Canada
| | - Catherine F. Poh
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada (P.M.L.)
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 350-2194 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
| | - Pierre M. Lane
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada (P.M.L.)
- School of Biomedical Engineering, University of British Columbia, 251-2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
- School of Engineering Science, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
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Hill C, Malone J, Liu K, Ng SPY, MacAulay C, Poh C, Lane P. Three-Dimension Epithelial Segmentation in Optical Coherence Tomography of the Oral Cavity Using Deep Learning. Cancers (Basel) 2024; 16:2144. [PMID: 38893263 PMCID: PMC11172075 DOI: 10.3390/cancers16112144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/01/2024] [Accepted: 06/02/2024] [Indexed: 06/21/2024] Open
Abstract
This paper aims to simplify the application of optical coherence tomography (OCT) for the examination of subsurface morphology in the oral cavity and reduce barriers towards the adoption of OCT as a biopsy guidance device. The aim of this work was to develop automated software tools for the simplified analysis of the large volume of data collected during OCT. Imaging and corresponding histopathology were acquired in-clinic using a wide-field endoscopic OCT system. An annotated dataset (n = 294 images) from 60 patients (34 male and 26 female) was assembled to train four unique neural networks. A deep learning pipeline was built using convolutional and modified u-net models to detect the imaging field of view (network 1), detect artifacts (network 2), identify the tissue surface (network 3), and identify the presence and location of the epithelial-stromal boundary (network 4). The area under the curve of the image and artifact detection networks was 1.00 and 0.94, respectively. The Dice similarity score for the surface and epithelial-stromal boundary segmentation networks was 0.98 and 0.83, respectively. Deep learning (DL) techniques can identify the location and variations in the epithelial surface and epithelial-stromal boundary in OCT images of the oral mucosa. Segmentation results can be synthesized into accessible en face maps to allow easier visualization of changes.
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Affiliation(s)
- Chloe Hill
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada; (C.H.); (J.M.); (K.L.); (C.M.); (C.P.)
- School of Engineering Science, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Jeanie Malone
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada; (C.H.); (J.M.); (K.L.); (C.M.); (C.P.)
- School of Biomedical Engineering, University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
| | - Kelly Liu
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada; (C.H.); (J.M.); (K.L.); (C.M.); (C.P.)
- School of Biomedical Engineering, University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
- Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada;
| | - Samson Pak-Yan Ng
- Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada;
| | - Calum MacAulay
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada; (C.H.); (J.M.); (K.L.); (C.M.); (C.P.)
- Department of Pathology and Laboratory Medicine, University of British Columbia, 2211 Wesbrook Mall, Vancouver, BC V6T 1Z7, Canada
| | - Catherine Poh
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada; (C.H.); (J.M.); (K.L.); (C.M.); (C.P.)
- Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada;
| | - Pierre Lane
- Department of Integrative Oncology, British Columbia Cancer Research Institute, 675 W 10th Ave., Vancouver, BC V5Z 1L3, Canada; (C.H.); (J.M.); (K.L.); (C.M.); (C.P.)
- School of Engineering Science, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
- School of Biomedical Engineering, University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
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Baus-Domínguez M, Oliva-Ferrusola E, Maza-Solano S, Ruiz-de-León G, Serrera-Figallo MÁ, Gutiérrez-Perez JL, Torres-Lagares D, Macías-García L. Biological Response of the Peri-Implant Mucosa to Different Definitive Implant Rehabilitation Materials. Polymers (Basel) 2024; 16:1534. [PMID: 38891480 PMCID: PMC11174483 DOI: 10.3390/polym16111534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 05/23/2024] [Accepted: 05/26/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND Sealing the peri-implant tissue is a determining factor for long-term implant survival. In the transmucosal region, the cervical fraction of the prosthetic crown is in contact with these tissues, so mucointegration will also be influenced by the biomaterial used for the prosthetic restoration. This study aims to compare the tissue response generated by definitive restorative materials and polymeric materials from a histological point of view. METHODS This study performed an observational prospective cohort study in which biopsies of the peri-implant mucosa were taken after placement of implant-supported prosthetic restorations made of different materials (zirconium oxide, lithium disilicate, and PMMA). RESULTS A statistically significant difference was observed in the increase in the thickness of the non-keratinized epithelium when comparing the definitive materials (zirconium oxide/lithium disilicate) vs. the provisional material (PMMA) and in the number of collagen fibers when comparing zirconium oxide and lithium disilicate. CONCLUSIONS This study found that zirconia is the material that presents the most adequate biological response of peri-implant tissues. It shows a lower intensity of inflammatory cellular content, a total normality in the number of collagen fibers (the arrangement of the fibers is normal in 90% of the cases), and vascular proliferation of connective tissue in 83% of the cases. These parameters make it a material with a predictable response. Similarly, only the following slight statistically significant differences between the definitive and provisional materials are observed, indicating that the biological response generated by the provisional material (PMMA) is not very different from that obtained with the placement of the definitive restoration.
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Affiliation(s)
- María Baus-Domínguez
- Department of Stomatology, Faculty of Dentistry, University of Seville, C/Avicena S/N, 41009 Seville, Spain; (E.O.-F.); (S.M.-S.); (G.R.-d.-L.); (M.-Á.S.-F.); (J.-L.G.-P.); (D.T.-L.)
| | - Elena Oliva-Ferrusola
- Department of Stomatology, Faculty of Dentistry, University of Seville, C/Avicena S/N, 41009 Seville, Spain; (E.O.-F.); (S.M.-S.); (G.R.-d.-L.); (M.-Á.S.-F.); (J.-L.G.-P.); (D.T.-L.)
| | - Serafín Maza-Solano
- Department of Stomatology, Faculty of Dentistry, University of Seville, C/Avicena S/N, 41009 Seville, Spain; (E.O.-F.); (S.M.-S.); (G.R.-d.-L.); (M.-Á.S.-F.); (J.-L.G.-P.); (D.T.-L.)
| | - Gonzalo Ruiz-de-León
- Department of Stomatology, Faculty of Dentistry, University of Seville, C/Avicena S/N, 41009 Seville, Spain; (E.O.-F.); (S.M.-S.); (G.R.-d.-L.); (M.-Á.S.-F.); (J.-L.G.-P.); (D.T.-L.)
| | - María-Ángeles Serrera-Figallo
- Department of Stomatology, Faculty of Dentistry, University of Seville, C/Avicena S/N, 41009 Seville, Spain; (E.O.-F.); (S.M.-S.); (G.R.-d.-L.); (M.-Á.S.-F.); (J.-L.G.-P.); (D.T.-L.)
| | - José-Luis Gutiérrez-Perez
- Department of Stomatology, Faculty of Dentistry, University of Seville, C/Avicena S/N, 41009 Seville, Spain; (E.O.-F.); (S.M.-S.); (G.R.-d.-L.); (M.-Á.S.-F.); (J.-L.G.-P.); (D.T.-L.)
| | - Daniel Torres-Lagares
- Department of Stomatology, Faculty of Dentistry, University of Seville, C/Avicena S/N, 41009 Seville, Spain; (E.O.-F.); (S.M.-S.); (G.R.-d.-L.); (M.-Á.S.-F.); (J.-L.G.-P.); (D.T.-L.)
| | - Laura Macías-García
- Department of Cytology and Normal and Pathological Histology, School of Medicine, University of Seville, Av. Sánchez Pizjuán S/N, 41009 Seville, Spain
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6
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Oetter N, Pröll J, Sievert M, Goncalves M, Rohde M, Nobis CP, Knipfer C, Aubreville M, Pan Z, Breininger K, Maier A, Kesting M, Stelzle F. Oral mucosa - an examination map for confocal laser endomicroscopy within the oral cavity: an experimental clinical study. Clin Oral Investig 2024; 28:266. [PMID: 38652317 PMCID: PMC11039507 DOI: 10.1007/s00784-024-05664-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 04/16/2024] [Indexed: 04/25/2024]
Abstract
OBJECTIVES Confocal laser endomicroscopy (CLE) is an optical method that enables microscopic visualization of oral mucosa. Previous studies have shown that it is possible to differentiate between physiological and malignant oral mucosa. However, differences in mucosal architecture were not taken into account. The objective was to map the different oral mucosal morphologies and to establish a "CLE map" of physiological mucosa as baseline for further application of this powerful technology. MATERIALS AND METHODS The CLE database consisted of 27 patients. The following spots were examined: (1) upper lip (intraoral) (2) alveolar ridge (3) lateral tongue (4) floor of the mouth (5) hard palate (6) intercalary line. All sequences were examined by two CLE experts for morphological differences and video quality. RESULTS Analysis revealed clear differences in image quality and possibility of depicting tissue morphologies between the various localizations of oral mucosa: imaging of the alveolar ridge and hard palate showed visually most discriminative tissue morphology. Labial mucosa was also visualized well using CLE. Here, typical morphological features such as uniform cells with regular intercellular gaps and vessels could be clearly depicted. Image generation and evaluation was particularly difficult in the area of the buccal mucosa, the lateral tongue and the floor of the mouth. CONCLUSION A physiological "CLE map" for the entire oral cavity could be created for the first time. CLINICAL RELEVANCE This will make it possible to take into account the existing physiological morphological features when differentiating between normal mucosa and oral squamous cell carcinoma in future work.
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Affiliation(s)
- Nicolai Oetter
- Department of Oral and Maxillofacial Surgery, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), University Hospital Erlangen, Glückstraße 11, 91054, Erlangen, Germany.
- SAOT‑Erlangen Graduate School in Advanced Optical Technologies, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), Paul Gordan Straße 6, 91052, Erlangen, Germany.
| | - Jonas Pröll
- Department of Oral and Maxillofacial Surgery, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), University Hospital Erlangen, Glückstraße 11, 91054, Erlangen, Germany
| | - Matti Sievert
- Department of Otorhinolaryngology, Head and Neck Surgery, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), University Hospital Erlangen, Waldstraße 1, 91054, Erlangen, Germany
| | - Miguel Goncalves
- Department of Otorhinolaryngology, Head and Neck Surgery, Julius-Maximilians University Würzburg, University Hospital Würzburg, Josef-Schneider-Straße 11, 97080, Würzburg, Germany
| | - Maximilian Rohde
- Department of Oral and Maxillofacial Surgery, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), University Hospital Erlangen, Glückstraße 11, 91054, Erlangen, Germany
- SAOT‑Erlangen Graduate School in Advanced Optical Technologies, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), Paul Gordan Straße 6, 91052, Erlangen, Germany
| | - Christopher-Philipp Nobis
- Department of Oral and Maxillofacial Surgery, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), University Hospital Erlangen, Glückstraße 11, 91054, Erlangen, Germany
| | - Christian Knipfer
- Department of Oral and Maxillofacial Surgery, University Hamburg, University Medical Center Hamburg- Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Marc Aubreville
- Technische Hochschule Ingolstadt, Esplanade 10, 85049, Ingolstadt, Germany
| | - Zhaoya Pan
- Pattern Recognition Lab, Department of Computer Science, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), Martensstraße 3, 91058, Erlangen, Germany
| | - Katharina Breininger
- Department Artificial Intelligence in Biomedical Engineering, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), Henkestraße 91, 91052, Erlangen, Germany
| | - Andreas Maier
- Pattern Recognition Lab, Department of Computer Science, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), Martensstraße 3, 91058, Erlangen, Germany
| | - Marco Kesting
- Department of Oral and Maxillofacial Surgery, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), University Hospital Erlangen, Glückstraße 11, 91054, Erlangen, Germany
- SAOT‑Erlangen Graduate School in Advanced Optical Technologies, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), Paul Gordan Straße 6, 91052, Erlangen, Germany
| | - Florian Stelzle
- Department of Oral and Maxillofacial Surgery, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), University Hospital Erlangen, Glückstraße 11, 91054, Erlangen, Germany
- SAOT‑Erlangen Graduate School in Advanced Optical Technologies, Friedrich‑Alexander University Erlangen‑Nürnberg (FAU), Paul Gordan Straße 6, 91052, Erlangen, Germany
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7
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Creighton RL, Faber KA, Tobos CI, Doan MA, Guo T, Woodrow KA. Oral mucosal vaccination using integrated fiber microneedles. J Control Release 2024; 367:649-660. [PMID: 38295993 PMCID: PMC11010722 DOI: 10.1016/j.jconrel.2024.01.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/12/2024] [Accepted: 01/28/2024] [Indexed: 02/13/2024]
Abstract
The oral mucosa is an attractive site for immunization due to its accessibility and ability to elicit local and systemic immune responses. However, evaluating oral mucosal immunogenicity has proven challenging due to the physical barriers and immunological complexity of the oral mucosa. Microneedles can overcome these physical barriers, but previous work has been limited in the scope of microneedle delivery site, geometry, and release kinetics, all of which are expected to affect physiological responses. Here, we develop integrated fiber microneedle devices, an oral dosage form with tunable geometries and material configurations capable of both burst and sustained release to controlled depths in the oral mucosa. Integrated fiber microneedles administered to either the buccal or sublingual mucosa result in seroconversion and antigen-specific interferon-γ secretion in splenocytes. The dynamics and magnitude of the resulting immune response can be modulated by tuning microneedle release kinetics. Optimal microneedle geometry is site-specific, with longer microneedles eliciting greater immunogenicity in the buccal mucosa, and shorter microneedles eliciting greater immunogenicity in the sublingual mucosa. The Th1/Th2 phenotype of the resulting immune response is also dependent on integrated fiber microneedle length. Together, these results establish integrated fiber microneedles as a multifunctional delivery system for the oral mucosa and motivate further exploration using tunable delivery systems to better understand oral mucosal immunity.
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Affiliation(s)
- Rachel L Creighton
- Department of Bioengineering, University of Washington, 3720 15(th) Ave NE, Seattle, WA 98195, USA
| | - Kate A Faber
- Department of Bioengineering, University of Washington, 3720 15(th) Ave NE, Seattle, WA 98195, USA
| | - Carmen I Tobos
- Department of Bioengineering, University of Washington, 3720 15(th) Ave NE, Seattle, WA 98195, USA
| | - My-Anh Doan
- Department of Bioengineering, University of Washington, 3720 15(th) Ave NE, Seattle, WA 98195, USA
| | - Teri Guo
- Department of Bioengineering, University of Washington, 3720 15(th) Ave NE, Seattle, WA 98195, USA
| | - Kim A Woodrow
- Department of Bioengineering, University of Washington, 3720 15(th) Ave NE, Seattle, WA 98195, USA.
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8
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Parikh AO, Conger JR, Li J, Sibug Saber M, Chang JR. A Review of Current Uses of Amniotic Membrane Transplantation in Ophthalmic Plastic and Reconstructive Surgery. Ophthalmic Plast Reconstr Surg 2024; 40:134-149. [PMID: 38427832 DOI: 10.1097/iop.0000000000002494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
PURPOSE To review and summarize the existing literature on the clinical applications of amniotic membrane transplantation (AMT) in ophthalmic plastic and reconstructive surgery. METHODS A literature review was conducted on the PubMed database using the following search terms: "amniotic membrane" and "eyelid" or "orbit" or "fornix" or "socket" or "lacrimal". RESULTS In total 516 articles resulted from the search, of which 62 were included. Numerous cases and case series have been published on the use of amniotic membrane transplantation for ocular surface reconstruction, eyelid and forniceal reconstruction, and cicatricial eyelid abnormalities. Surgical methods of securing the graft vary. Few comparative studies exist; some show a similar or improved result when compared to oral mucous membrane grafting for certain indications. CONCLUSIONS Amniotic membrane transplantation can be a useful tool for the oculoplastic surgeon when faced with a case requiring reconstruction of the posterior lamellae, particularly in patients without other graft donor sites available, and uses of AMT continue to expand. Additional studies directly comparing AMT to other reconstructive techniques would be helpful in choosing between the available surgical techniques and standardizing best practices.
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Affiliation(s)
- Alomi O Parikh
- USC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, U.S.A
| | - Jordan R Conger
- USC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, U.S.A
| | - Joy Li
- USC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, U.S.A
| | - Maria Sibug Saber
- Department of Pathology, Keck School of Medicine, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California, U.S.A
| | - Jessica R Chang
- USC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, U.S.A
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Bergmann A, Feng C, Chochlidakis K, Russo LL, Ercoli C. A comparison of alveolar ridge mucosa thickness in completely edentulous patients. J Prosthodont 2024; 33:132-140. [PMID: 37470112 DOI: 10.1111/jopr.13738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 06/13/2023] [Accepted: 06/25/2023] [Indexed: 07/21/2023] Open
Abstract
PURPOSE The purpose of this cross-sectional clinical study was to determine and compare alveolar ridge mucosa thickness at crestal, buccal, and lingual locations of the maxillary and mandibular arches in completely edentulous patients using a dedicated, ultrasonic gingival scanner. MATERIALS AND METHODS Thirty-eight completely edentulous subjects were included in the study. In each subject, soft tissue thickness was measured at 28 sites of the edentulous ridge by a single calibrated examiner. Intra-observer reliability was calculated with Intraclass Correlation Coefficients by measuring 10 subjects twice, after 1 week. Measurements (mm) were taken at the buccal, lingual, and crestal aspects of the ridge with a dedicated ultrasonic scanner. Repeated measures ANOVA and paired t-tests were used to compare the mean buccal, lingual, and crestal soft tissue thicknesses at each site. The Generalized Estimating Equations model was used to study the effects of age, sex, and race. Confidence level was set to 95%. RESULTS Mean tissue thickness ranged from 0.96 to 1.98 mm with a mean of 1.63 ± 0.25 mm. Intraclass Correlation Coefficients were > 0.97. No significant differences between buccal, crestal, and lingual sites were noted for the mandibular arch as well as at 4 sites on the maxillary arch (maxillary right second molar, maxillary right canine, maxillary left first premolar, maxillary left second molar). However, significant differences in soft tissue thickness were noted for all remaining maxillary sites. Race was found to be positively correlated with tissue thickness, with Black individuals showing a significantly greater thickness than White individuals at 4 sites (maxillary right first molar, maxillary left canine, mandibular right second premolar, mandibular right first molar). Age was found to be positively correlated with tissue thickness at 4 sites (maxillary left central incisor, maxillary left first molar, maxillary left second molar, mandibular left second premolar) and negatively correlated at 2 sites (mandibular right canine, mandibular right second molar). Female sex was positively (maxillary left second premolar, maxillary left second molar) and negatively (mandibular right canine) correlated, respectively, with tissue thickness at 3 sites. When data for anterior and posterior sites were respectively pooled, tissue thickness was significantly less at anterior sextant lingual and crestal sites, while no difference was seen for buccal sites. CONCLUSION Statistically significant differences for alveolar ridge mucosa thickness were found at several sites in the maxilla and between anterior and posterior sextants for lingual and crestal sites in the maxillary and mandibular arches. Tissue thickness differences were also noted for race with Black individuals showing greater tissue thickness at some sites. Age and sex did not show a clear effect on tissue thickness. Recorded differences in tissue thickness were however small and appear of uncertain clinical significance.
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Affiliation(s)
- Andrew Bergmann
- Departments of Prosthodontics and Periodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, New York, USA
| | - Changyong Feng
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York, USA
| | - Konstantinos Chochlidakis
- Departments of Prosthodontics and Periodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, New York, USA
| | - Lucio Lo Russo
- Department of Prosthodontics, School of Dentistry, University of Foggia, Foggia, Italy
| | - Carlo Ercoli
- Departments of Prosthodontics and Periodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, New York, USA
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10
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Kim Y, Park IH, Shin J, Choi J, Jeon C, Jeon S, Shin JS, Jung H. Sublingual Dissolving Microneedle (SLDMN)-Based Vaccine for Inducing Mucosal Immunity against SARS-CoV-2. Adv Healthc Mater 2023; 12:e2300889. [PMID: 37337388 DOI: 10.1002/adhm.202300889] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/07/2023] [Indexed: 06/21/2023]
Abstract
The coronavirus pandemic has accelerated the development of next-generation vaccination technology to combat future pandemic outbreaks. Mucosal vaccination effectively protects the mucosal surfaces, the primary sites of viral entry, by inducing the secretion of immunoglobulin A (IgA) and humoral IgG. Here, a dissolving microneedle (DMN) is adopted as a mucosal vaccine delivery platform to directly penetrate the sublingual site, which is rich in antigen-presenting cells (APCs) and lymphoid tissues. The sublingual dissolving microneedle (SLDMN) vaccination platform comprised a micropillar-based compartment and a 3D-printed SLDMN applicator as a substitute for the DMN patch. The penetration efficacy of SLDMNs is assessed using in vitro optical coherence tomography (OCT) and in vivo histological analysis. The efficacy of SLDMN is also evaluated in a vaccine form using the recombinant spike (S1) protein of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Furthermore, SLDMN is used to challenge transgenic mice expressing human angiotensin-converting enzyme 2 (hACE2) receptors. Its effects are evaluated on antibody production, survival rate, and inflammation attenuation after infection compared to the intramuscular (IM) injections. Overall, SLDMN effectively induced mucosal immunity via IgA secretion, attenuated lung inflammation, and lowered the levels of cytokines and chemokines, which may prevent the "cytokine storm" after SARS-CoV-2 infection.
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Affiliation(s)
- Youseong Kim
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - In Ho Park
- Institute of Immunology and Immunological Diseases, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jiwoo Shin
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jaibyung Choi
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Chansol Jeon
- JUVIC, 208Ho, 272, Digital-ro, Guro-gu, Seoul, 08389, Republic of Korea
| | - Seonghun Jeon
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jeon-Soo Shin
- Department of Microbiology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Institute of Immunology and Immunological Diseases, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Hyungil Jung
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- JUVIC, 208Ho, 272, Digital-ro, Guro-gu, Seoul, 08389, Republic of Korea
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11
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Menditti D, Santagata M, Imola G, Staglianò S, Vitagliano R, Boschetti CE, Inchingolo AM. Personalized Medicine in Oral Oncology: Imaging Methods and Biological Markers to Support Diagnosis of Oral Squamous Cell Carcinoma (OSCC): A Narrative Literature Review. J Pers Med 2023; 13:1397. [PMID: 37763165 PMCID: PMC10532745 DOI: 10.3390/jpm13091397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/08/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
For decades, oral squamous cell carcinoma (OSCC) has been one of the most prevalent and mortal cancers worldwide. The gold standard for OSCC diagnosis is still histopathology but this narrative multidisciplinary review has the aim to explore the literature about conventional OSCC prognostic indicators related to the pTNM stage at the diagnosis such as the depth of invasion and the lymphovascular invasion associated with distant metastasis as indicators of poor life expectancy. Despite its multifactorial nature and recognizable precursors, its diagnosis at the early stages is still challenging. We wanted to highlight the importance of the screening as a primary weapon that a stomatologist should consider, intercepting all at-risk conditions and lesions associated with OSCC and its early stages. This narrative review also overviews the most promising imaging techniques, such as CT, MRI, and US-echography, and their application related to clinical and surgical practice, but also the most-investigated prognostic and diagnostic tissue and salivary biomarkers helpful in OSCC diagnosis and prognostic assessment. Our work highlighted remarkable potential biomarkers that could have a leading role in the future. However, we are still far from defining an appropriate and concrete protocol to apply in clinical practice. The hope is that the present and future research will overcome these limitations to benefit patients, clinicians, and welfare.
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Affiliation(s)
- Dardo Menditti
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, 80138 Naples, Italy; (D.M.); (M.S.); (G.I.); (S.S.); (C.E.B.)
| | - Mario Santagata
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, 80138 Naples, Italy; (D.M.); (M.S.); (G.I.); (S.S.); (C.E.B.)
| | - Gianmaria Imola
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, 80138 Naples, Italy; (D.M.); (M.S.); (G.I.); (S.S.); (C.E.B.)
| | - Samuel Staglianò
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, 80138 Naples, Italy; (D.M.); (M.S.); (G.I.); (S.S.); (C.E.B.)
| | - Rita Vitagliano
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, 80138 Naples, Italy; (D.M.); (M.S.); (G.I.); (S.S.); (C.E.B.)
| | - Ciro Emiliano Boschetti
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, 80138 Naples, Italy; (D.M.); (M.S.); (G.I.); (S.S.); (C.E.B.)
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12
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Gruda Y, Albrecht M, Buckova M, Haim D, Lauer G, Koch E, Joehrens K, Schnabel C, Golde J, Li J, McLaughlin RA, Walther J. Characteristics of Clinically Classified Oral Lichen Planus in Optical Coherence Tomography: A Descriptive Case-Series Study. Diagnostics (Basel) 2023; 13:2642. [PMID: 37627901 PMCID: PMC10453426 DOI: 10.3390/diagnostics13162642] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 08/27/2023] Open
Abstract
Malignant transformation of oral lichen planus (OLP) into oral squamous cell carcinoma is considered as one of the most serious complications of OLP. For the early detection of oral cancer in OLP follow-up, accurate localization of the OLP center is still difficult but often required for confirmatory biopsy with histopathological examination. Optical coherence tomography (OCT) offers the potential for more reliable biopsy sampling in the oral cavity as it is capable of non-invasively imaging the degenerated oral layer structure. In this case-series study with 15 patients, features of clinically classified forms of OLP in OCT cross-sections were registered and correlated with available histologic sections. Besides patients with reticular, atrophic, erosive and plaque-like OLP, two patients with leukoplakia were included for differentiation. The results show that OCT yields information about the epithelial surface, thickness and reflectivity, as well as the identifiability of the basement membrane and the vessel network, which could be used to complement the visual clinical appearance of OLP variants and allow a more accurate localization of the OLP center. This forms the basis for further studies on OCT-assisted non-invasive clinical classification of OLP, with the aim of enabling decision support for biopsy sampling in the future.
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Affiliation(s)
- Yuliia Gruda
- Carl Gustav Carus Faculty of Medicine, Department of Medical Physics and Biomedical Engineering, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (Y.G.); (M.A.); (C.S.); (J.G.)
| | - Marius Albrecht
- Carl Gustav Carus Faculty of Medicine, Department of Medical Physics and Biomedical Engineering, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (Y.G.); (M.A.); (C.S.); (J.G.)
- Carl Gustav Carus Faculty of Medicine, Institute of Pathology, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany;
| | - Michaela Buckova
- Carl Gustav Carus Faculty of Medicine, Clinic and Policlinic of Oral- and Maxillofacial Surgery, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (M.B.); (D.H.); (G.L.)
| | - Dominik Haim
- Carl Gustav Carus Faculty of Medicine, Clinic and Policlinic of Oral- and Maxillofacial Surgery, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (M.B.); (D.H.); (G.L.)
| | - Guenter Lauer
- Carl Gustav Carus Faculty of Medicine, Clinic and Policlinic of Oral- and Maxillofacial Surgery, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (M.B.); (D.H.); (G.L.)
| | - Edmund Koch
- Carl Gustav Carus Faculty of Medicine, Department of Anesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany;
| | - Korinna Joehrens
- Carl Gustav Carus Faculty of Medicine, Institute of Pathology, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany;
| | - Christian Schnabel
- Carl Gustav Carus Faculty of Medicine, Department of Medical Physics and Biomedical Engineering, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (Y.G.); (M.A.); (C.S.); (J.G.)
- Carl Gustav Carus Faculty of Medicine, Department of Anesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany;
| | - Jonas Golde
- Carl Gustav Carus Faculty of Medicine, Department of Medical Physics and Biomedical Engineering, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (Y.G.); (M.A.); (C.S.); (J.G.)
| | - Jiawen Li
- Faculty of Sciences, Engineering and Technology, The University of Adelaide, Adelaide 5005, Australia;
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide 5005, Australia;
| | - Robert A. McLaughlin
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide 5005, Australia;
- Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide 5005, Australia
| | - Julia Walther
- Carl Gustav Carus Faculty of Medicine, Department of Medical Physics and Biomedical Engineering, TU Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (Y.G.); (M.A.); (C.S.); (J.G.)
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13
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Wanasathop A, Choi HA, Nimmansophon P, Murawsky M, Krishnan DG, Li SK. Permeability of Fresh and Frozen Porcine and Human Gingiva and the Effect of Storage Duration. Pharmaceutics 2023; 15:pharmaceutics15051492. [PMID: 37242734 DOI: 10.3390/pharmaceutics15051492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/11/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
The gingiva is the target site for some topical drugs, but the permeability of human gingiva has not been systematically evaluated. Pigs are a common animal model for in vitro membrane transport studies. The objectives of this study were to: (a) determine the permeability coefficients of freshly excised human gingiva using model permeants, (b) compare the permeability coefficients of fresh human gingiva with those of fresh porcine gingiva, (c) evaluate the effect of freezing duration on the permeability of porcine gingiva, and (d) compare the permeability coefficients of fresh and cadaver (frozen) human gingiva. A goal was to examine the feasibility of using porcine gingiva as a surrogate for human gingiva. The potential of using frozen tissues in permeability studies of gingiva was also examined. Fresh and frozen porcine gingiva, fresh human gingiva, and frozen cadaver human gingiva were compared in the transport study with model polar and lipophilic permeants. The fresh porcine and human tissues showed similarities in the "permeability coefficient vs. octanol-water distribution coefficient" relationship. The porcine gingiva had a lower permeability than that of the human, with a moderate correlation between the permeability of the fresh porcine and fresh human tissues. The permeability of the porcine tissues for the model polar permeants increased significantly after the tissues were frozen in storage. Moreover, the frozen human cadaver tissue could not be utilized due to the high and indiscriminating permeability of the tissue for the permeants and large tissue sample-to-sample variabilities.
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Affiliation(s)
- Apipa Wanasathop
- Division of Pharmaceutical Sciences, College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Hyojin Alex Choi
- Division of Pharmaceutical Sciences, College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Patcharawan Nimmansophon
- Division of Pharmaceutical Sciences, College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Michael Murawsky
- Division of Pharmaceutical Sciences, College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Deepak G Krishnan
- Division of Oral and Maxillofacial Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - S Kevin Li
- Division of Pharmaceutical Sciences, College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
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14
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Mokabari K, Iriti M, Varoni EM. Mucoadhesive Vaccine Delivery Systems for the Oral Mucosa. J Dent Res 2023:220345231164111. [PMID: 37148290 DOI: 10.1177/00220345231164111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023] Open
Abstract
Vaccine technology has evolved continuously since its beginning, and mucosal vaccination, including intranasal, sublingual, and oral administrations, has recently gained great scientific interest. The oral mucosa represents a promising minimally invasive route for antigen delivery, mainly at sublingual and buccal mucosal sites, and it is easily accessible, immunologically rich, and able to promote an effective systemic and local immune response. The aim of this review is to provide an updated overview on the technologies for oral mucosal vaccination, with emphasis on mucoadhesive biomaterial-based delivery systems. Polymeric-based nanoparticles, multilayer films and wafers, liposomes, microneedles, and thermoresponsive gels are the most investigated strategies to deliver antigens locally, showing mucoadhesive properties, controlled release of the antigen, and the ability to enhance immunological responses. These formulations have achieved adequate properties in terms of vaccine stability, are minimally invasive, and are easy to produce and manage. To date, oral mucosa vaccine delivery systems represent a promising and open field of research. Future directions should focus on the role of these systems to induce sustained innate and adaptive immune responses, by integrating the recent advances achieved in mucoadhesion with those related to vaccine technology. Being painless, easy to administer, highly stable, safe, and effective, the antigen delivery systems via the oral mucosa may represent a useful and promising strategy for fast mass vaccination, especially during pandemic outbreaks.
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Affiliation(s)
- K Mokabari
- University of Turin (Department of Molecular Biotechnology and Health Sciences)
| | - M Iriti
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
| | - E M Varoni
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
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15
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Manimaran R, Dinesh Patel K, Maurice Lobo V, Suresh Kumbhar S, Vamsi Krishna Venuganti V. Buccal mucosal application of dissolvable microneedle patch containing photosensitizer provides effective localized delivery and phototherapy against oral carcinoma. Int J Pharm 2023; 640:122991. [PMID: 37120122 DOI: 10.1016/j.ijpharm.2023.122991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 05/01/2023]
Abstract
The effectiveness of phototherapy using photosensitizers is limited by the challenges in their delivery at the site of irradiation. Here, we demonstrate the localized application of a photosensitizer-loaded microneedle patch for effective photodynamic and photothermal therapy in oral carcinoma. Indocyanine green (ICG) was studied as a photosensitizer for its effect on oral carcinoma, FaDu cells. Different parameters including concentration, near-infrared (NIR) laser irradiation intensity and irradiation time were optimized while measuring temperature increase and reactive oxygen species (ROS) generation in FaDu cells. A dissolvable microneedle (DMN) patch made of sodium carboxymethyl cellulose and sodium alginate was fabricated by the micromolding technique. DMN showed sufficient mechanical strength for insertion in the excised porcine buccal mucosa. DMN dissolved within 30 s in phosphate buffer and 30 min in the excised buccal mucosa. Confocal microscopy studies revealed DMN penetration up to a depth of 300 µm within the buccal mucosa. ICG-DMN applied on the back of the rat was found to be localized at the application site before and after irradiation using an 808 nm NIR laser. ICG-DMN was applied on the FaDu xenografted tumor model in athymic nude mice. The localized temperature increase and ROS generation significantly (P<0.05) decreased the tumor volume after ICG-DMN application compared with the control group. In conclusion, DMN can be developed for the localized administration of photosensitizers for phototherapy in oral carcinoma.
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Affiliation(s)
- Raghuraman Manimaran
- Department of Pharmacy, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, Telangana, India
| | - Kinnari Dinesh Patel
- Department of Pharmacy, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, Telangana, India
| | - Venessa Maurice Lobo
- Department of Pharmacy, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, Telangana, India
| | - Shubham Suresh Kumbhar
- Department of Pharmacy, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, Telangana, India
| | - Venkata Vamsi Krishna Venuganti
- Department of Pharmacy, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, Telangana, India.
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16
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Sievert M, Mantsopoulos K, Mueller SK, Rupp R, Eckstein M, Stelzle F, Oetter N, Maier A, Aubreville M, Iro H, Goncalves M. Validation of a classification and scoring system for the diagnosis of laryngeal and pharyngeal squamous cell carcinomas by confocal laser endomicroscopy. Braz J Otorhinolaryngol 2022; 88 Suppl 4:S26-S32. [PMID: 34348858 DOI: 10.1016/j.bjorl.2021.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 06/16/2021] [Accepted: 06/20/2021] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Confocal laser endomicroscopy is an optical imaging technique that allows in vivo, real-time, microscope-like images of the upper aerodigestive tract's mucosa. The assessment of morphological tissue characteristics for the correct differentiation between healthy and malignant suspected mucosa requires strict evaluation criteria. OBJECTIVE This study aims to validate an eight-point score for the correct assessment of malignancy. METHODS We performed confocal laser endomicroscopy between March and October 2020 in 13 patients. 197 sequences (11.820 images) originated from the marginal area of pharyngeal and laryngeal carcinomas. Specimens were taken at corresponding locations and analyzed in H&E staining as a standard of reference. A total of six examiners evaluated the sequences based on a scoring system; they were blinded to the histopathological examination. The primary endpoints are sensitivity, specificity, and accuracy. Secondary endpoints are interrater reliability and receiver operator characteristics. RESULTS Healthy mucosa showed epithelium with uniform size and shape with distinct cytoplasmic membranes and regular vessel architecture. Confocal laser endomicroscopy of malignant cells demonstrated a disorganized arrangement of variable cellular morphology. We calculated an accuracy, sensitivity, specificity, positive predictive value, and negative predictive value of 83.2%, 81.3%, 85.5%, 86.7%, and 79.7%, respectively, with a κ-value of 0.64, and an area under the curve of 0.86. CONCLUSION The results confirm that this scoring system is applicable in the laryngeal and pharyngeal mucosa to classify benign and malignant tissue. A scoring system based on defined and reproducible characteristics can help translate this experimental method to broad clinical practice in head and neck diagnosis.
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Affiliation(s)
- Matti Sievert
- Friedrich-Alexander-Universität Erlangen-Nürnberg, University Hospital, Department of Otorhinolaryngology, Head and Neck Surgery, Erlangen, Germany
| | - Konstantinos Mantsopoulos
- Friedrich-Alexander-Universität Erlangen-Nürnberg, University Hospital, Department of Otorhinolaryngology, Head and Neck Surgery, Erlangen, Germany
| | - Sarina K Mueller
- Friedrich-Alexander-Universität Erlangen-Nürnberg, University Hospital, Department of Otorhinolaryngology, Head and Neck Surgery, Erlangen, Germany
| | - Robin Rupp
- Friedrich-Alexander-Universität Erlangen-Nürnberg, University Hospital, Department of Otorhinolaryngology, Head and Neck Surgery, Erlangen, Germany
| | - Markus Eckstein
- Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg, University Hospital, Erlangen, Germany
| | - Florian Stelzle
- Friedrich-Alexander-Universität Erlangen-Nürnberg, University Hospital, Department of Maxillofacial Surgery, Erlangen, Germany
| | - Nicolai Oetter
- Friedrich-Alexander-Universität Erlangen-Nürnberg, University Hospital, Department of Maxillofacial Surgery, Erlangen, Germany
| | - Andreas Maier
- Pattern Recognition Lab, Computer Science, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Marc Aubreville
- Institute of Image Understanding and Medical Application of Artificial Intelligence, Technische Hochschule, Ingolstadt, Germany
| | - Heinrich Iro
- Friedrich-Alexander-Universität Erlangen-Nürnberg, University Hospital, Department of Otorhinolaryngology, Head and Neck Surgery, Erlangen, Germany
| | - Miguel Goncalves
- University Hospital Aachen, RWTH Aachen University, Department of Otorhinolaryngology, Head and Neck Surgery, Germany.
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17
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Cheung VKY, Hulme K, Schifter M, Palme C, Low THH, Clark J, Gupta R. Oral Epithelial Dysplasia: A Review of Diagnostic Criteria for Anatomic Pathologists. Adv Anat Pathol 2022; 29:227-240. [PMID: 35435865 DOI: 10.1097/pap.0000000000000343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Oral epithelial dysplasia (OED) represents a spectrum of histologic changes in the oral cavity mucosa that has the potential to transform into oral squamous cell carcinoma. Predicting the risk of malignant transformation is predominantly based on clinicopathologic correlation, histologic examination and grading. OED often poses a diagnostic challenge, primarily due to its histologic mimics and a large number of terminologies used in the literature. The grading system for OED is also fraught with significant interobserver variability. This review summarizes the essential clinical and histopathologic features of OED and its mimics. Practical preanalytical, analytical, and postanalytical considerations for anatomic pathologists are discussed to improve the diagnostic accuracy and increase the reproducibility in the grading of OED.
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Affiliation(s)
- Veronica K Y Cheung
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital
- Faculty of Medicine and Health, Sydney Medical School
| | - Katherine Hulme
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital
| | - Mark Schifter
- Westmead Centre for Oral Health, Westmead Hospital, a Teaching Hospital of the Sydney Dental School, Faculty of Medicine and Health, University of Sydney
- The Skin Hospital, Darlinghurst (Sydney)
- Sydney Head and Neck Cancer Institute, Chris O'Brien Lifehouse
| | - Carsten Palme
- Faculty of Medicine and Health, Sydney Medical School
- Sydney Head and Neck Cancer Institute, Chris O'Brien Lifehouse
| | - Tsu-Hui Hubert Low
- Faculty of Medicine and Health, Sydney Medical School
- Sydney Head and Neck Cancer Institute, Chris O'Brien Lifehouse
- Department of Otolaryngology - Head & Neck Surgery, Faculty of Medicine and Health Sciences, Macquarie University
| | - Jonathan Clark
- Faculty of Medicine and Health, Sydney Medical School
- Sydney Head and Neck Cancer Institute, Chris O'Brien Lifehouse
- Institute of Academic Surgery, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Ruta Gupta
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital
- Faculty of Medicine and Health, Sydney Medical School
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18
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Ramakrishnan AN, Röhrle O, Ludtka C, Varghese R, Koehler J, Kiesow A, Schwan S. Numerical study of the stress state on the oral mucosa and abutment tooth upon insertion of partial dentures in the mandible. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING 2022; 38:e3604. [PMID: 35419990 DOI: 10.1002/cnm.3604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/12/2021] [Accepted: 04/04/2022] [Indexed: 06/14/2023]
Abstract
The introduction of a removable partial denture onto the dental arch significantly influences the mechanical stress characteristics of both the jawbone and oral mucosa. The aim of this study was to analyze the stress state caused by biting forces upon insertion of partial dentures into the assembly, and to understand the influence of the resulting contact pressure on its retention behavior. For this purpose, a numerical model of a removable partial denture is proposed based on 3D models developed using computer tomography data of the jawbone and the removable partial denture. The denture system rests on the oral mucosa surface and three abutment teeth. The application of bite forces on the denture generated a stick condition on the loaded regions of the denture-oral mucosa interface, which indicates positive retention of the denture onto the oral mucosa surface. Slip and negative retention were observed in the regions of the contact space that were not directly loaded. The contact pressures observed in the regions of the oral mucosa in contact with the denture were below the clinical pressure pain threshold value for soft tissue, which potentially lowers the risk of pain being experienced by denture users. Further, the variation of the retention behavior and contact pressures across different regions of the denture assembly was observed. Thus, there is a need for adhesives or restraining mechanisms for the denture system in order to avoid bending and deformation of sections of the denture as a consequence of the applied bite force.
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Affiliation(s)
- Anantha Narayanan Ramakrishnan
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle, Germany
- Institute for Modelling and Simulation of Biomechanical Systems, University of Stuttgart, Stuttgart, Germany
| | - Oliver Röhrle
- Institute for Modelling and Simulation of Biomechanical Systems, University of Stuttgart, Stuttgart, Germany
| | - Christopher Ludtka
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida, USA
| | | | - Josephine Koehler
- Department of Prosthodontics, School of Dental Medicine, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Andreas Kiesow
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle, Germany
| | - Stefan Schwan
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle, Germany
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19
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Oral Cancer Screening by Artificial Intelligence-Oriented Interpretation of Optical Coherence Tomography Images. Radiol Res Pract 2022; 2022:1614838. [PMID: 35502299 PMCID: PMC9056242 DOI: 10.1155/2022/1614838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 03/23/2022] [Accepted: 04/11/2022] [Indexed: 11/29/2022] Open
Abstract
Early diagnosis of oral cancer is critical to improve the survival rate of patients. The current strategies for screening of patients for oral premalignant and malignant lesions unfortunately miss a significant number of involved patients. Optical coherence tomography (OCT) is an optical imaging modality that has been widely investigated in the field of oncology for identification of cancerous entities. Since the interpretation of OCT images requires professional training and OCT images contain information that cannot be inferred visually, artificial intelligence (AI) with trained algorithms has the ability to quantify visually undetectable variations, thus overcoming the barriers that have postponed the involvement of OCT in the process of screening of oral neoplastic lesions. This literature review aimed to highlight the features of precancerous and cancerous oral lesions on OCT images and specify how AI can assist in screening and diagnosis of such pathologies.
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20
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Kim YS, Kim J, Na W, Sung GH, Baek SK, Kim YK, Kim GR, Hu HJ, Park JH. Development of a Microneedle Swab for Acquisition of Genomic DNA From Buccal Cells. Front Bioeng Biotechnol 2022; 10:829648. [PMID: 35252137 PMCID: PMC8895340 DOI: 10.3389/fbioe.2022.829648] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/17/2022] [Indexed: 11/13/2022] Open
Abstract
A swab is a tool for obtaining buccal DNA from buccal mucus for biological analysis. The acquisition of a sufficient amount and high quality of DNA is an important factor in determining the accuracy of a diagnosis. A microneedle swab (MN swab) was developed to obtain more oral mucosal tissues non-invasively. Eight types of MN swabs were prepared with varying combinations of patterns (zigzag or straight), number of MNs, intervals of MNs, and sharpness of tips. When MN swab was applied up to 10 times, the tissue amount and DNA yield increased compared to commercial swabs. A zigzag pattern of microneedles was found to be more efficient than a straight pattern and increasing the number of microneedles in an array increased the DNA yield. The MN swab collected about twice the DNA compared to the commercial swab. In an in vivo test using mini pigs, the lower cycle threshold values of mucosal samples collected with MN swabs compared to samples collected with commercial swabs indicated that a greater amount of DNA was collected for SNP genotyping. A polymer MN swab is easy to manufacture by a single molding process, and it has a greater sampling capacity than existing commercial swabs.
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Affiliation(s)
- Yun-Seo Kim
- Department of Bionano Technology and Gachon BioNano Research Institute, Gachon University, Seongnam, South Korea
| | - JeongHyeon Kim
- Department of Bionano Technology and Gachon BioNano Research Institute, Gachon University, Seongnam, South Korea
| | - Woonsung Na
- Laboratory of Veterinary Virology, College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea
| | - Gil-Hwan Sung
- QuadMedicine R and D Centre, QuadMedicine Co., Ltd., Seongnam, South Korea
| | - Seung-Ki Baek
- QuadMedicine R and D Centre, QuadMedicine Co., Ltd., Seongnam, South Korea
| | | | | | - Hae-Jin Hu
- Endomics, Inc., Seongnam, South Korea
- *Correspondence: Hae-Jin Hu, ; Jung-Hwan Park,
| | - Jung-Hwan Park
- Department of Bionano Technology and Gachon BioNano Research Institute, Gachon University, Seongnam, South Korea
- *Correspondence: Hae-Jin Hu, ; Jung-Hwan Park,
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21
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Adnan A, Yaroslavsky AN, Carroll JD, Selting W, Juliano AF, London WB, Sonis ST, Duncan CN, Treister NS. The Path to an Evidence-Based Treatment Protocol for Extraoral Photobiomodulation Therapy for the Prevention of Oral Mucositis. FRONTIERS IN ORAL HEALTH 2022; 2:689386. [PMID: 35048034 PMCID: PMC8757848 DOI: 10.3389/froh.2021.689386] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/22/2021] [Indexed: 12/15/2022] Open
Abstract
Oral mucositis is a painful complication of hematopoietic stem cell transplantation for which photobiomodulation therapy (PBMT) is a safe and effective intervention. Extraoral delivery of PBMT has clinical advantages over intraoral delivery but requires additional dosimetric considerations due to the external tissue layers through which the light must propagate before reaching the oral mucosa. Additionally, to date there has been no dose modeling study, a task essential to developing a justified treatment protocol. We review here some of the complexities surrounding extraoral photobiomodulation therapy and offer that may help guide researchers toward an evidence-based treatment protocol for the prevention of oral mucositis.
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Affiliation(s)
- Ather Adnan
- Texas A&M University Health Science Center, College of Medicine, Houston, TX, United States
| | - Anna N Yaroslavsky
- Advanced Biophotonics Laboratory, Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA, United States.,Department of Dermatology, Massachusetts General Hospital, Boston, MA, United States
| | | | - Wayne Selting
- Department of Surgical Science and Integrated Diagnostics, University of Genoa, Genoa, Italy
| | - Amy F Juliano
- Department of Radiology, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, United States
| | - Wendy B London
- Department of Pediatrics, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, United States
| | - Stephen T Sonis
- Department of Surgery, Divisions of Oral Medicine and Dentistry, Brigham and Women's Hospital and the Dana-Farber Cancer Institute, Boston, MA, United States.,Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, United States.,Biomodels LLC., Waltham, MA, United States
| | - Christine N Duncan
- Department of Pediatrics, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, United States
| | - Nathaniel S Treister
- Department of Surgery, Divisions of Oral Medicine and Dentistry, Brigham and Women's Hospital and the Dana-Farber Cancer Institute, Boston, MA, United States.,Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, United States
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22
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Panta P. Oral squamous cell carcinoma due to chronic mechanical irritation. Oral Oncol 2021; 123:105616. [PMID: 34763118 DOI: 10.1016/j.oraloncology.2021.105616] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 11/18/2022]
Affiliation(s)
- Prashanth Panta
- Department of Oral Medicine and Radiology, Malla Reddy Institute of Dental Sciences, Suraram X Roads, Jeedimetla, Quthbullapur, Hyderabad, Telangana 500055, India.
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23
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Zeng S, Huang Y, Huang W, Pathak JL, He Y, Gao W, Huang J, Zhang Y, Zhang J, Dong H. Real-Time Monitoring and Quantitative Evaluation of Resin In-Filtrant Repairing Enamel White Spot Lesions Based on Optical Coherence Tomography. Diagnostics (Basel) 2021; 11:diagnostics11112046. [PMID: 34829392 PMCID: PMC8618956 DOI: 10.3390/diagnostics11112046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/02/2021] [Accepted: 11/02/2021] [Indexed: 01/11/2023] Open
Abstract
The aim of the present study was to explore the feasibility of real-time monitoring and quantitative guiding the repair of enamel white spot lesions (WSLs) with resin infiltration by optical coherence tomography (OCT). Seven New Zealand rabbits were treated with 37% phosphoric acid etchant for 15 min to establish the model of enamel demineralization chalk spots of upper incisors, which were repaired by Icon resin infiltrant. OCT, stereo microscope (SM) imaging, scanning electron microscope (SEM) imaging and hematoxylin eosin (HE) staining were used to image each operation step. The changes of WSLs of enamel before and in the process of restoration with resin infiltrant showed specific performance in OCT images, which were consistent with the corresponding results of stereomicroscope and SEM. OCT can non-invasively and accurately image the whole process of repairing enamel demineralization layer with resin infiltration real-time, which can effectively guide the clinical use of resin infiltrant to repair enamel WSLs and be used as an imaging tool to evaluate the process and effect of restoration with resin infiltrant at the same time.
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Affiliation(s)
- Sujuan Zeng
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Yuhang Huang
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Wenyan Huang
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Janak L. Pathak
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Yanbing He
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Weijian Gao
- Department of Biomedical Engineering, School of Basic Medical Sciences, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou Medical University, Guangzhou 511436, China; (W.G.); (J.H.); (Y.Z.)
| | - Jing Huang
- Department of Biomedical Engineering, School of Basic Medical Sciences, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou Medical University, Guangzhou 511436, China; (W.G.); (J.H.); (Y.Z.)
| | - Yiqing Zhang
- Department of Biomedical Engineering, School of Basic Medical Sciences, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou Medical University, Guangzhou 511436, China; (W.G.); (J.H.); (Y.Z.)
| | - Jian Zhang
- Department of Biomedical Engineering, School of Basic Medical Sciences, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou Medical University, Guangzhou 511436, China; (W.G.); (J.H.); (Y.Z.)
- Correspondence:
| | - Huixian Dong
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China;
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24
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Panzarella V, Bartolone A, Coniglio R, Rodolico V, Maniscalco L, Capocasale G, Iurato Carbone M, Campisi G. Diagnostic Concordance between Optical Coherence Tomography and Histological Investigations for Immune-Mediated Desquamative Gingivitis: Observational Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:9095. [PMID: 34501683 PMCID: PMC8430736 DOI: 10.3390/ijerph18179095] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/21/2021] [Accepted: 08/25/2021] [Indexed: 12/28/2022]
Abstract
Desquamative gingivitis (DG) denotes a heterogeneous immune-mediated disease for which early diagnosis represents a great challenge. The main aim of this study is to validate diagnostic concordance between specific Optical Coherence Tomography (OTC) patterns for DG related to oral Lichen Planus (OLP), Pemphigus Vulgaris (PV), and Mucous Membrane Pemphigoid (MMP) and definitive histological diagnosis. Forty-three patients with suspected immune-mediated DGs, were progressively recruited. Before biopsy, an OCT preliminary evaluation was performed using specific pre-determined OCT diagnostic patterns (i.e., morphology and localization of blisters, status of the basal membrane, epithelial thickness, presence/absence of acantholytic cells into blister and/or inflammatory infiltrate) related to OLP, PV and MMP. After histological confirmation, OCT and histological diagnoses were compared. Using pre-determined patterns, OCT diagnoses of DGs were: 22 (51%) OLP, of which 11 (26%) were with the bullous variant, 4 (9%) PV and 6 (14%) MMP. The same diagnoses were found by histological investigations (with the main OCT discriminatory potential for the bullous variant of OLP). The concordance between the two diagnostic methods was confirmed by the Fisher exact test (p-value < 0.01). These specific OCT patterns show a diagnostic reliability in 100% of the cases investigated, suggesting their accuracy to support the complex diagnosis and management of immune-mediated DGs.
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Affiliation(s)
- Vera Panzarella
- Department of Surgical, Oncological and Oral Sciences (Di.Chir.On.S), University of Palermo, 90127 Palermo, Italy; (A.B.); (M.I.C.); (G.C.)
| | - Alessia Bartolone
- Department of Surgical, Oncological and Oral Sciences (Di.Chir.On.S), University of Palermo, 90127 Palermo, Italy; (A.B.); (M.I.C.); (G.C.)
| | - Rita Coniglio
- Sector of Oral Medicine, Azienda Ospedaliera Universitaria Policlinico (A.O.U.P.) “Paolo Giaccone” of Palermo, 90127 Palermo, Italy;
| | - Vito Rodolico
- Department ProMISE, University of Palermo, 90127 Palermo, Italy;
| | - Laura Maniscalco
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy;
| | - Giorgia Capocasale
- Department of Surgical Sciences, Paediatrics and Gynaecology, University of Verona, Policlinico “G. B. Rossi” of Verona, 37134 Verona, Italy;
| | - Martina Iurato Carbone
- Department of Surgical, Oncological and Oral Sciences (Di.Chir.On.S), University of Palermo, 90127 Palermo, Italy; (A.B.); (M.I.C.); (G.C.)
| | - Giuseppina Campisi
- Department of Surgical, Oncological and Oral Sciences (Di.Chir.On.S), University of Palermo, 90127 Palermo, Italy; (A.B.); (M.I.C.); (G.C.)
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25
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James BL, Sunny SP, Heidari AE, Ramanjinappa RD, Lam T, Tran AV, Kankanala S, Sil S, Tiwari V, Patrick S, Pillai V, Shetty V, Hedne N, Shah D, Shah N, Chen ZP, Kandasarma U, Raghavan SA, Gurudath S, Nagaraj PB, Wilder-Smith P, Suresh A, Kuriakose MA. Validation of a Point-of-Care Optical Coherence Tomography Device with Machine Learning Algorithm for Detection of Oral Potentially Malignant and Malignant Lesions. Cancers (Basel) 2021; 13:3583. [PMID: 34298796 PMCID: PMC8304149 DOI: 10.3390/cancers13143583] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 11/29/2022] Open
Abstract
Non-invasive strategies that can identify oral malignant and dysplastic oral potentially-malignant lesions (OPML) are necessary in cancer screening and long-term surveillance. Optical coherence tomography (OCT) can be a rapid, real time and non-invasive imaging method for frequent patient surveillance. Here, we report the validation of a portable, robust OCT device in 232 patients (lesions: 347) in different clinical settings. The device deployed with algorithm-based automated diagnosis, showed efficacy in delineation of oral benign and normal (n = 151), OPML (n = 121), and malignant lesions (n = 75) in community and tertiary care settings. This study showed that OCT images analyzed by automated image processing algorithm could distinguish the dysplastic-OPML and malignant lesions with a sensitivity of 95% and 93%, respectively. Furthermore, we explored the ability of multiple (n = 14) artificial neural network (ANN) based feature extraction techniques for delineation high grade-OPML (moderate/severe dysplasia). The support vector machine (SVM) model built over ANN, delineated high-grade dysplasia with sensitivity of 83%, which in turn, can be employed to triage patients for tertiary care. The study provides evidence towards the utility of the robust and low-cost OCT instrument as a point-of-care device in resource-constrained settings and the potential clinical application of device in screening and surveillance of oral cancer.
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Affiliation(s)
- Bonney Lee James
- Integrated Head and Neck Oncology Program (DSRG-5), Mazumdar Shaw Center for Translational Research (MSCTR), Mazumdar Shaw Medical Foundation, NH Health City, Bangalore 560099, India; (B.L.J.); (S.P.S.); (R.D.R.); (P.B.N.)
- Manipal Academy of Higher Education (MAHE), Karnataka 576104, India
| | - Sumsum P. Sunny
- Integrated Head and Neck Oncology Program (DSRG-5), Mazumdar Shaw Center for Translational Research (MSCTR), Mazumdar Shaw Medical Foundation, NH Health City, Bangalore 560099, India; (B.L.J.); (S.P.S.); (R.D.R.); (P.B.N.)
- Manipal Academy of Higher Education (MAHE), Karnataka 576104, India
- Department of Head and Neck Oncology, Mazumdar Shaw Medical Center, NH Health City, Bangalore 560099, India; (V.P.); (V.S.); (N.H.)
| | - Andrew Emon Heidari
- Beckman Laser Institute, UCI, Irvine, CA 92612, USA; (A.E.H.); (T.L.); (A.V.T.); (Z.-p.C.); (P.W.-S.)
| | - Ravindra D. Ramanjinappa
- Integrated Head and Neck Oncology Program (DSRG-5), Mazumdar Shaw Center for Translational Research (MSCTR), Mazumdar Shaw Medical Foundation, NH Health City, Bangalore 560099, India; (B.L.J.); (S.P.S.); (R.D.R.); (P.B.N.)
| | - Tracie Lam
- Beckman Laser Institute, UCI, Irvine, CA 92612, USA; (A.E.H.); (T.L.); (A.V.T.); (Z.-p.C.); (P.W.-S.)
| | - Anne V. Tran
- Beckman Laser Institute, UCI, Irvine, CA 92612, USA; (A.E.H.); (T.L.); (A.V.T.); (Z.-p.C.); (P.W.-S.)
| | - Sandeep Kankanala
- Department of Oral Medicine and Radiology, KLE Society’s Institute of Dental Sciences, Bangalore 560022, India; (S.K.); (S.S.); (S.A.R.); (S.G.)
| | - Shiladitya Sil
- Department of Oral Medicine and Radiology, KLE Society’s Institute of Dental Sciences, Bangalore 560022, India; (S.K.); (S.S.); (S.A.R.); (S.G.)
| | - Vidya Tiwari
- Biocon Foundation, Bangalore 560100, India; (V.T.); (S.P.)
| | | | - Vijay Pillai
- Department of Head and Neck Oncology, Mazumdar Shaw Medical Center, NH Health City, Bangalore 560099, India; (V.P.); (V.S.); (N.H.)
| | - Vivek Shetty
- Department of Head and Neck Oncology, Mazumdar Shaw Medical Center, NH Health City, Bangalore 560099, India; (V.P.); (V.S.); (N.H.)
| | - Naveen Hedne
- Department of Head and Neck Oncology, Mazumdar Shaw Medical Center, NH Health City, Bangalore 560099, India; (V.P.); (V.S.); (N.H.)
| | - Darshat Shah
- Mazumdar Shaw Center for Translational Research (MSCTR), Mazumdar Shaw Medical Foundation, NH Health City, Bangalore 560099, India; (D.S.); (N.S.)
| | - Nameeta Shah
- Mazumdar Shaw Center for Translational Research (MSCTR), Mazumdar Shaw Medical Foundation, NH Health City, Bangalore 560099, India; (D.S.); (N.S.)
| | - Zhong-ping Chen
- Beckman Laser Institute, UCI, Irvine, CA 92612, USA; (A.E.H.); (T.L.); (A.V.T.); (Z.-p.C.); (P.W.-S.)
| | - Uma Kandasarma
- Department of Oral and Maxillofacial Pathology, KLE Society’s Institute of Dental Sciences, Bangalore 560022, India;
| | - Subhashini Attavar Raghavan
- Department of Oral Medicine and Radiology, KLE Society’s Institute of Dental Sciences, Bangalore 560022, India; (S.K.); (S.S.); (S.A.R.); (S.G.)
| | - Shubha Gurudath
- Department of Oral Medicine and Radiology, KLE Society’s Institute of Dental Sciences, Bangalore 560022, India; (S.K.); (S.S.); (S.A.R.); (S.G.)
| | - Praveen Birur Nagaraj
- Integrated Head and Neck Oncology Program (DSRG-5), Mazumdar Shaw Center for Translational Research (MSCTR), Mazumdar Shaw Medical Foundation, NH Health City, Bangalore 560099, India; (B.L.J.); (S.P.S.); (R.D.R.); (P.B.N.)
- Department of Oral Medicine and Radiology, KLE Society’s Institute of Dental Sciences, Bangalore 560022, India; (S.K.); (S.S.); (S.A.R.); (S.G.)
- Biocon Foundation, Bangalore 560100, India; (V.T.); (S.P.)
| | - Petra Wilder-Smith
- Beckman Laser Institute, UCI, Irvine, CA 92612, USA; (A.E.H.); (T.L.); (A.V.T.); (Z.-p.C.); (P.W.-S.)
| | - Amritha Suresh
- Integrated Head and Neck Oncology Program (DSRG-5), Mazumdar Shaw Center for Translational Research (MSCTR), Mazumdar Shaw Medical Foundation, NH Health City, Bangalore 560099, India; (B.L.J.); (S.P.S.); (R.D.R.); (P.B.N.)
- Department of Head and Neck Oncology, Mazumdar Shaw Medical Center, NH Health City, Bangalore 560099, India; (V.P.); (V.S.); (N.H.)
| | - Moni Abraham Kuriakose
- Integrated Head and Neck Oncology Program (DSRG-5), Mazumdar Shaw Center for Translational Research (MSCTR), Mazumdar Shaw Medical Foundation, NH Health City, Bangalore 560099, India; (B.L.J.); (S.P.S.); (R.D.R.); (P.B.N.)
- Department of Head and Neck Oncology, Mazumdar Shaw Medical Center, NH Health City, Bangalore 560099, India; (V.P.); (V.S.); (N.H.)
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26
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Fiori F, Rullo R, Contaldo M, Inchingolo F, Romano A. Noninvasive in vivo imaging of oral mucosa: state-of-the-art. Minerva Dent Oral Sci 2021; 70:286-293. [PMID: 34132508 DOI: 10.23736/s2724-6329.21.04543-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Technological development has interested most of the dentistry's branches leading to the use of other medical technologies non previously involved in dental practice. This study aims to evaluate the potential role of non-invasive imaging techniques in oral pathology workflow. Optical coherence tomography has been described by several authors as a promising aid for differential diagnosis of autoimmune diseases and to detect epithelial subversion of the oral mucosa before the clinical manifestation of oral mucositis. High-frequency ultrasound offers the chance to assess lesional dimensions both in benign and malignant lesions with a high dimensional reliability compared with histopathology. Reflectance confocal microscopy seems to be helpful in the early detection of cytological changes due to its high resolution, suggesting a more interesting role in the analysis of malignant lesions. The study presented highlighted the potential role of noninvasive in vivo imaging although further studies are needed for the further validation of these techniques.
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Affiliation(s)
- Fausto Fiori
- Multidisciplinary Department of Medical Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Rosario Rullo
- Multidisciplinary Department of Medical Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Maria Contaldo
- Multidisciplinary Department of Medical Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy -
| | - Francesco Inchingolo
- Section of Dental Medicine, Department of Interdisciplinary Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Antonio Romano
- Multidisciplinary Department of Medical Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
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Romano A, Di Stasio D, Petruzzi M, Fiori F, Lajolo C, Santarelli A, Lucchese A, Serpico R, Contaldo M. Noninvasive Imaging Methods to Improve the Diagnosis of Oral Carcinoma and Its Precursors: State of the Art and Proposal of a Three-Step Diagnostic Process. Cancers (Basel) 2021; 13:cancers13122864. [PMID: 34201237 PMCID: PMC8228647 DOI: 10.3390/cancers13122864] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/05/2021] [Accepted: 06/07/2021] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Oral squamous cell carcinoma (OSCC) accounts for 90–95% of malignant tumors of the lip and oral cavity and is associated with high mortality in the advanced stages. Early diagnosis is a challenge for oral pathologists and dentists, due to the ambiguous appearance of early OSCC, which is often misdiagnosed, mistreated, and associated with diagnostic delay. The gold standards for OSCC diagnosis are biopsy and histopathological assessment, but these procedures are invasive and time-consuming. Adjunctive noninvasive techniques allow the definition of the malignant features of a suspicious lesion in real time and noninvasively, thus improving the diagnostic procedure. The present review aimed to focus on some of the main promising noninvasive imaging techniques, to highlight their perspective adoption in a three-step diagnosis, which is idealistically faster and better, as well as enables the patient’s compliance. Abstract Oral squamous cell carcinoma (OSCC) is the most prevalent form of cancer of lips and oral cavity, and its diagnostic delay, caused by misdiagnosis at the early stages, is responsible for high mortality ratios. Biopsy and histopathological assessment are the gold standards for OSCC diagnosis, but they are time-consuming, invasive, and do not always enable the patient’s compliance, mainly in cases of follow-up with the need for more biopsies. The use of adjunctive noninvasive imaging techniques improves the diagnostic approach, making it faster and better accepted by patients. The present review aims to focus on the most consolidated diagnostic techniques, such as vital staining and tissue autofluorescence, and to report the potential role of some of the most promising innovative techniques, such as narrow-band imaging, high-frequency ultrasounds, optical coherence tomography, and in vivo confocal microscopy. According to their contribution to OSCC diagnosis, an ideal three-step diagnostic procedure is proposed, to make the diagnostic path faster, better, and more accurate.
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Affiliation(s)
- Antonio Romano
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Via Luigi de Crecchio, 6, 80138 Naples, Italy; (A.R.); (D.D.S.); (F.F.); (A.L.); (R.S.)
| | - Dario Di Stasio
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Via Luigi de Crecchio, 6, 80138 Naples, Italy; (A.R.); (D.D.S.); (F.F.); (A.L.); (R.S.)
| | - Massimo Petruzzi
- Interdisciplinary Department of Medicine, University of Bari “Aldo Moro”, Piazza Giulio Cesare 11, 70124 Bari, Italy;
| | - Fausto Fiori
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Via Luigi de Crecchio, 6, 80138 Naples, Italy; (A.R.); (D.D.S.); (F.F.); (A.L.); (R.S.)
| | - Carlo Lajolo
- Head and Neck Department, Fondazione Policlinico Universitario A. Gemelli–IRCCS, School of Dentistry, Università Cattolica del Sacro Cuore, Largo A. Gemelli, 8, 00168 Rome, Italy;
| | - Andrea Santarelli
- Department of Clinical Specialist and Dental Sciences, Marche Polytechnic University, Via Tronto 10, 60126 Ancona, Italy;
| | - Alberta Lucchese
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Via Luigi de Crecchio, 6, 80138 Naples, Italy; (A.R.); (D.D.S.); (F.F.); (A.L.); (R.S.)
| | - Rosario Serpico
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Via Luigi de Crecchio, 6, 80138 Naples, Italy; (A.R.); (D.D.S.); (F.F.); (A.L.); (R.S.)
| | - Maria Contaldo
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Via Luigi de Crecchio, 6, 80138 Naples, Italy; (A.R.); (D.D.S.); (F.F.); (A.L.); (R.S.)
- Correspondence: ; Tel.: +39-3204876058
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Trebing CT, Sen S, Rues S, Herpel C, Schöllhorn M, Lux CJ, Rammelsberg P, Schwindling FS. Non-invasive three-dimensional thickness analysis of oral epithelium based on optical coherence tomography-development and diagnostic performance. Heliyon 2021; 7:e06645. [PMID: 33898808 PMCID: PMC8055558 DOI: 10.1016/j.heliyon.2021.e06645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 02/12/2021] [Accepted: 03/26/2021] [Indexed: 12/12/2022] Open
Abstract
Objectives Evaluating structural changes in oral epithelium can assist with the diagnosis of cancerous lesions. Two-dimensional (2D) non-invasive optical coherence tomography (OCT) is an established technique for this purpose. The objective of this study was to develop and test the diagnostic accuracy of a three-dimensional (3D) evaluation method. Methods The oral lip mucosa of 10 healthy volunteers was scanned using an 870-nm spectral-domain OCT device (SD-OCT) with enhanced depth imaging (EDI). Four raters semi-automatically segmented the epithelial layer twice. Thus, eighty 3D datasets were created and analyzed for epithelial thickness. To provide a reference standard for comparison, the raters took cross-sectional 2D measurements at representative sites. The correlation between the 2D and 3D measurements, as well as intra- and inter-rater reliability, were analyzed using intraclass correlation coefficients (ICC). Results Mean epithelial thickness was 280 ± 64μm (range 178–500 μm) and 268 ± 49μm (range 163–425 μm) for the 2D and 3D analysis, respectively. The inter-modality correlation of the thickness values was good (ICC: 0.76 [0.626–0.846]), indicating that 3D analysis of epithelial thickness provides valid results. Intra-rater and inter-rater reliability were good (3D analysis) and excellent (2D analysis), suggesting high reproducibility. Conclusions Diagnostic accuracy was high for the developed 3D analysis of oral epithelia using non-invasive, radiation-free OCT imaging. Clinical significance This new 3D technique could potentially be used to improve time-efficiency and quality in the diagnosis of epithelial lesions compared with the 2D reference standard.
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Affiliation(s)
| | - Sinan Sen
- Department of Orthodontics, Heidelberg University Hospital, Heidelberg, Germany
| | - Stefan Rues
- Department of Prosthodontics, Heidelberg University Hospital, Heidelberg, Germany
| | - Christopher Herpel
- Department of Prosthodontics, Heidelberg University Hospital, Heidelberg, Germany
| | - Maria Schöllhorn
- Department of Prosthodontics, Heidelberg University Hospital, Heidelberg, Germany
| | - Christopher J Lux
- Department of Orthodontics, Heidelberg University Hospital, Heidelberg, Germany
| | - Peter Rammelsberg
- Department of Prosthodontics, Heidelberg University Hospital, Heidelberg, Germany
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Ovalbumin and cholera toxin delivery to buccal mucus for immunization using microneedles and comparison of immunological response to transmucosal delivery. Drug Deliv Transl Res 2021; 11:1390-1400. [PMID: 33759112 DOI: 10.1007/s13346-021-00964-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2021] [Indexed: 01/01/2023]
Abstract
The oral mucosa is an effective site for vaccination. However, for oral mucosal vaccines, delivery of the right dose of vaccine is not possible due to the water-rich environment. In this study, the buccal mucosa, which is easy to access using a microneedle array in the oral cavity, was selected as the administration site. The immune responses to the use of microneedles to conventional transmucosal delivery were compared. In addition, the adjuvant effect of the addition of cholera toxin (CT) to the drug formulation was observed. Two kinds of patches were prepared: (1) Ovalbumin (OVA) was dip coated only on the tips of microneedles (C-OVA-MN) and (2) OVA was coated on the surface of a flat disk patch substrate without microneedles (C-OVA-D). The drug delivery properties of C-OVA-MN and C-OVA-D were investigated using fluorescent-labeled OVA (OVA/FITC). Each patch was administered to mice twice, 2 weeks apart, and then antibody titers were measured. A microneedle patch can deliver vaccine into the epithelium of the buccal mucosa in a short period of time compared to transmucosal delivery. A microneedle system of C-OVA-MN showed a high serum IgG titer. In addition, CT triggered CD8+ and CD4+ T cell-mediated immune responses. Through this study, we present the possibility of a new method of vaccination to the buccal mucosa using microneedles and CT adjuvant. Illustration of delivery of vaccine to the oral mucosal epithelium using a microneedle patch: Ovalbumin (OVA)-coated microneedle (C-OVA-MN) consists of tip, step, and coating formulation. Microneedle patch coated with OVA formulation is targeting buccal mucosa, which is easy to access in the oral cavity. OVA is delivered to the buccal epithelium precisely using a microneedle patch, and OVA is delivered by transmucosal route using a disk patch.
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Surlin P, Didilescu AC, Lazar L, Arsenie CC, Camen A, Popescu DM, Gheorghe DN, Osiac E, Rogoveanu I. Evaluation Through the Optical Coherence Tomography Analysis of the Influence of Non-Alcoholic Fatty Liver Disease on the Gingival Inflammation in Periodontal Patients. Diabetes Metab Syndr Obes 2021; 14:2935-2942. [PMID: 34234491 PMCID: PMC8254560 DOI: 10.2147/dmso.s310314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/13/2021] [Indexed: 01/23/2023] Open
Abstract
PURPOSE The purpose of this ex vivo study is to exhibit the inflammatory changes that occur within the gingival tissue by using optical coherence tomography (OCT) in periodontal patients with non-alcoholic fatty liver disease (NAFLD) and if NAFLD could influence the local periodontal inflammation. PATIENTS AND METHODS Gingival tissue samples obtained from patients were divided into three groups - P (periodontitis), NAFLD+P (NAFLD+periodontitis) and H (healthy) groups - and were scanned using an OCT light beam, in order to perform a qualitative and quantitative analysis of images. The value of average pixel density has been associated with the degree of inflammation. RESULTS The highest average pixel density was found in patients from the H group, while the lowest value of average pixel density was recorded in gingival tissue samples collected from patients with NAFLD+P. The image assessments from NAFLD+P group delivered lower values of average pixel density than those of P group, suggesting a possible influence of this disease on the inflammatory tissular changes produced by periodontal disease. CONCLUSION After comparing the OCT analysis results obtained for the three groups of patients, we can consider that NAFLD may be an aggravating factor for the inflammation of periodontal disease.
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Affiliation(s)
- Petra Surlin
- Department of Periodontology, Faculty of Dental Medicine, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Andreea Cristiana Didilescu
- Department of Embryology, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
| | - Luminita Lazar
- George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureş, Targu-Mures, Romania
| | - Cristian Cosmin Arsenie
- Doctoral School, University of Medicine and Pharmacy of Craiova, Craiova, Romania
- Correspondence: Cristian Cosmin Arsenie Doctoral School, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş St., Craiova, 200349, RomaniaTel +40 351 443 557 Email
| | - Adrian Camen
- Department of Oral Surgery, Faculty of Dental Medicine, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Dora Maria Popescu
- Department of Periodontology, Faculty of Dental Medicine, University of Medicine and Pharmacy of Craiova, Craiova, Romania
- Dora Maria Popescu Department of Periodontology, Faculty of Dental Medicine, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş St., Craiova, 200349, RomaniaTel +40 351 443 557 Email
| | - Dorin Nicolae Gheorghe
- Department of Periodontology, Faculty of Dental Medicine, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Eugen Osiac
- Department of Biophysics, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Ion Rogoveanu
- Department of Gastroenterology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, Craiova, Romania
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Pal R, Villarreal P, Yu X, Qiu S, Vargas G. Multimodal widefield fluorescence imaging with nonlinear optical microscopy workflow for noninvasive oral epithelial neoplasia detection: a preclinical study. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:JBO-200213R. [PMID: 33200597 PMCID: PMC7667429 DOI: 10.1117/1.jbo.25.11.116008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/02/2020] [Indexed: 05/06/2023]
Abstract
SIGNIFICANCE Early detection of epithelial cancers and precancers/neoplasia in the presence of benign lesions is challenging due to the lack of robust in vivo imaging and biopsy guidance techniques. Label-free nonlinear optical microscopy (NLOM) has shown promise for optical biopsy through the detection of cellular and extracellular signatures of neoplasia. Although in vivo microscopy techniques continue to be developed, the surface area imaged in microscopy is limited by the field of view. FDA-approved widefield fluorescence (WF) imaging systems that capture autofluorescence signatures of neoplasia provide molecular information at large fields of view, which may complement the cytologic and architectural information provided by NLOM. AIM A multimodal imaging approach with high-sensitivity WF and high-resolution NLOM was investigated to identify and distinguish image-based features of neoplasia from normal and benign lesions. APPROACH In vivo label-free WF imaging and NLOM was performed in preclinical hamster models of oral neoplasia and inflammation. Analyses of WF imaging, NLOM imaging, and dual modality (WF combined with NLOM) were performed. RESULTS WF imaging showed increased red-to-green autofluorescence ratio in neoplasia compared to inflammation and normal oral mucosa (p < 0.01). In vivo assessment of the mucosal tissue with NLOM revealed subsurface cytologic (nuclear pleomorphism) and architectural (remodeling of extracellular matrix) atypia in histologically confirmed neoplastic tissue, which were not observed in inflammation or normal mucosa. Univariate and multivariate statistical analysis of macroscopic and microscopic image-based features indicated improved performance (94% sensitivity and 97% specificity) of a multiscale approach over WF alone, even in the presence of benign lesions (inflammation), a common confounding factor in diagnostics. CONCLUSIONS A multimodal imaging approach integrating strengths from WF and NLOM may be beneficial in identifying oral neoplasia. Our study could guide future studies on human oral neoplasia to further evaluate merits and limitations of multimodal workflows and inform the development of multiscale clinical imaging systems.
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Affiliation(s)
- Rahul Pal
- Massachusetts General Hospital and Harvard Medical School, Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, Massachusetts, United States
| | - Paula Villarreal
- The University of Texas Medical Branch, Biomedical Engineering and Imaging Sciences Group, Galveston, Texas, United States
- The University of Texas Medical Branch, Department of Neuroscience, Cell Biology, and Anatomy, Galveston, Texas, United States
| | - Xiaoying Yu
- The University of Texas Medical Branch, Department of Preventive Medicine and Population Health, Galveston, Texas, United States
| | - Suimin Qiu
- The University of Texas Medical Branch, Department of Pathology, Galveston, Texas, United States
| | - Gracie Vargas
- The University of Texas Medical Branch, Biomedical Engineering and Imaging Sciences Group, Galveston, Texas, United States
- The University of Texas Medical Branch, Department of Neuroscience, Cell Biology, and Anatomy, Galveston, Texas, United States
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New Approaches in the Study of the Pathogenesis of Urethral Pain Syndrome. Diagnostics (Basel) 2020; 10:diagnostics10110860. [PMID: 33105749 PMCID: PMC7690567 DOI: 10.3390/diagnostics10110860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION Urethral pain syndrome (UPS) is still a pathology in which the diagnosis is formulated as a "diagnosis of exclusion". The exact pathogenetic mechanisms are not yet fully understood and clear recommendations for the prevention and treatment of UPS are absent. METHODS AND PARTICIPANTS A clinical and laboratory evaluation of 55 patients with established UPS included history taking, basic laboratory tests (e.g., complete blood count and clinical urine test), physical examination, uroflowmetry, and cystourethroscopy. Additionally, transvaginal ultrasound (TVUS) with compression elastography and cross-polarization optical tomography (CP OCT) were performed in 24 and 33 patients with UPS, respectively. The control group consisted of 14 patients with no complaints from the urinary system. RESULTS TVUS showed an expansion in the diameter of the internal lumen of the urethra, especially in the proximal region compared with the norm. Compression elastography revealed areas with increased stiffness (presence of fibrosis) in urethral and surrounding tissues. The performed CP OCT study showed that in UPS, the structure of the tissues in most cases was changed: trophic alterations in the epithelium (hypertrophy or atrophy) and fibrosis of underlying connective tissue were observed. The proximal fragment of the urethra with UPS underwent changes identical to those of the bladder neck. CONCLUSION This paper showed that the introduction of new technology-CP OCT-in conjunction with TVUS will allow verification of structural changes in tissues of the lower urinary tract at the level of their architectonics and will help doctors understand better the basics of the UPS pathogenesis.
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Albrecht M, Schnabel C, Mueller J, Golde J, Koch E, Walther J. In Vivo Endoscopic Optical Coherence Tomography of the Healthy Human Oral Mucosa: Qualitative and Quantitative Image Analysis. Diagnostics (Basel) 2020; 10:E827. [PMID: 33076312 PMCID: PMC7602587 DOI: 10.3390/diagnostics10100827] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/08/2020] [Accepted: 10/10/2020] [Indexed: 12/18/2022] Open
Abstract
To date, there is still a lack of reliable imaging modalities to improve the quality of consultation, diagnostic and medical examinations of the oral mucosa in dentistry. Even though, optical technologies have become an important element for the detection and treatment of different diseases of soft tissue, for the case of oral screenings the evidence of the benefit in comparison to conventional histopathology is mostly still pending. One promising optical technology for oral diagnostics is optical coherence tomography (OCT). To prove the potential of OCT, even the amount of freely accessible OCT data is not sufficient to describe the variance of healthy human oral soft tissue in vivo. In order to remedy this deficiency, the present study provides in vivo OCT cross sections of the human oral mucosa of the anterior and posterior oral cavity as well as the oropharynx of 47 adult volunteers. A collection of representative OCT cross sections forms the basis for a randomized blinded image analysis by means of seven criteria to assess the main features of the superficial layers of the human oral mucosa and to determine its correlation to regional features known from hematoxylin and eosin (HE) stained histology.
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Affiliation(s)
- Marius Albrecht
- Department of Medical Physics and Biomedical Engineering, Technische Universitaet Dresden, Carl Gustav Carus Faculty of Medicine, Fetscherstraße 74, 01307 Dresden, Germany; (M.A.); (C.S.)
| | - Christian Schnabel
- Department of Medical Physics and Biomedical Engineering, Technische Universitaet Dresden, Carl Gustav Carus Faculty of Medicine, Fetscherstraße 74, 01307 Dresden, Germany; (M.A.); (C.S.)
- Department of Anesthesiology and Intensive Care Medicine, Technische Universität Dresden, Clinical Sensoring and Monitoring, Carl Gustav Carus Faculty of Medicine, Fetscherstraße 74, 01307 Dresden, Germany; (J.M.); (J.G.); (E.K.)
| | - Juliane Mueller
- Department of Anesthesiology and Intensive Care Medicine, Technische Universität Dresden, Clinical Sensoring and Monitoring, Carl Gustav Carus Faculty of Medicine, Fetscherstraße 74, 01307 Dresden, Germany; (J.M.); (J.G.); (E.K.)
| | - Jonas Golde
- Department of Anesthesiology and Intensive Care Medicine, Technische Universität Dresden, Clinical Sensoring and Monitoring, Carl Gustav Carus Faculty of Medicine, Fetscherstraße 74, 01307 Dresden, Germany; (J.M.); (J.G.); (E.K.)
| | - Edmund Koch
- Department of Anesthesiology and Intensive Care Medicine, Technische Universität Dresden, Clinical Sensoring and Monitoring, Carl Gustav Carus Faculty of Medicine, Fetscherstraße 74, 01307 Dresden, Germany; (J.M.); (J.G.); (E.K.)
| | - Julia Walther
- Department of Medical Physics and Biomedical Engineering, Technische Universitaet Dresden, Carl Gustav Carus Faculty of Medicine, Fetscherstraße 74, 01307 Dresden, Germany; (M.A.); (C.S.)
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Moon KS, Choi EJ, Bae JM, Park YB, Oh S. Visible Light-Enhanced Antibacterial and Osteogenic Functionality of Au and Pt Nanoparticles Deposited on TiO 2 Nanotubes. MATERIALS 2020; 13:ma13173721. [PMID: 32842504 PMCID: PMC7503458 DOI: 10.3390/ma13173721] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/13/2020] [Accepted: 08/19/2020] [Indexed: 11/16/2022]
Abstract
This study aimed at evaluating the visible light mediated antimicrobial and osteogenic applications of noble metal, such as gold (Au) and platinum (Pt) coated titania (TiO2) nanotubes (NTs). In this study, the Au and Pt nanoparticles (NPs) were deposited on anodized 100 nm TiO2 NTs by ion plasma sputtering. The Au and Pt NPs were mainly deposited on the top surface layer of TiO2 NTs and showed light absorbance peaks around the 470 and 600 nm visible light region used in this study, as seen from the surface characterization. From the results of antibacterial activity test, Au and Pt NPs that were deposited on TiO2 NTs showed excellent antibacterial activity under 470 nm visible light irradiation due to the plasmonic photocatalysis based on the localized surface plasmon resonance effect of the Au and Pt NPs. In addition, alkaline phosphate activity test and quantitative real-time PCR assay of osteogenic related genes resulted that these NPs promoted the osteogenic functionality of human mesenchymal stem cells (hMSCs) under 600 nm visible light irradiation, because of the synergic effect of the photothermal scattering of noble metal nanoparticles and visible light low-level laser therapy (LLLT). Therefore, the combination of noble metal coated TiO2 NTs and visible light irradiation would be expected to perform permanent antibacterial activity without the need of an antibacterial agent besides promoting osteogenic functionality.
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Affiliation(s)
- Kyoung-Suk Moon
- Department of Dental Biomaterials and the Institute of Biomaterial and Implant, Wonkwang University School of Dentistry, Iksan 54538, Korea; (K.-S.M.); (J.-M.B.)
| | - Eun-Joo Choi
- Department of Oral and Maxillofacial Surgery, Wonkwang University School of Dentistry, Iksan 54538, Korea;
| | - Ji-Myung Bae
- Department of Dental Biomaterials and the Institute of Biomaterial and Implant, Wonkwang University School of Dentistry, Iksan 54538, Korea; (K.-S.M.); (J.-M.B.)
| | - Young-Bum Park
- Department of Prosthodontics, Yonsei University School of Dentistry, Seoul 03722, Korea
- Correspondence: (Y.-B.P.); (S.O.); Tel.: +82-2-2228-3164 (Y.-B.P.); +82-63-850-6982 (S.O.)
| | - Seunghan Oh
- Department of Dental Biomaterials and the Institute of Biomaterial and Implant, Wonkwang University School of Dentistry, Iksan 54538, Korea; (K.-S.M.); (J.-M.B.)
- Correspondence: (Y.-B.P.); (S.O.); Tel.: +82-2-2228-3164 (Y.-B.P.); +82-63-850-6982 (S.O.)
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Muruppel AM, Pai BJ, Bhat S, Parker S, Lynch E. Laser-Assisted Depigmentation-An Introspection of the Science, Techniques, and Perceptions. Dent J (Basel) 2020; 8:E88. [PMID: 32781667 PMCID: PMC7558501 DOI: 10.3390/dj8030088] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/24/2020] [Accepted: 08/04/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Gingival hyperpigmentation is a major concern for a significant number of patients, as a relevant aesthetic or cosmetic need. Oral melanin pigmentation is considered to be multifactorial and could be related to physiological or even pathological reasons and can be the consequence of a variety of local or systemic factors. This pigmentation varies individually across races or age groups and is without any gender predilection. Evidence gleaned from literature is presented from case-control studies and from the authors' own research work in prospective, split-mouth, double-blinded, clinical trials comparing treatment modalities in effecting depigmentation. METHODS A systematic review of published articles, using suitable assay criteria, was carried out to formulate a consensus on laser-assisted modalities. A total of 295 published sources were subject to critical analysis and resulted in six papers that were subject to data scrutiny. Additionally, evidence is presented on clinical protocols and treatment outcomes. RESULTS Analysis of randomized clinical studies identified the use of two laser wavelength groups-near infrared diode and erbium group of mid-infrared lasers. Several areas of analysis were examined, and inconsistent degrees of significance were obtained to establish which laser group was optimal and if they were any better than scalpel depigmentation. CONCLUSION A definitive conclusion is wanting as studies with scientific and standardized protocols of evaluation are yet to provide a take on comparative assessments between different techniques of depigmentation.
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Affiliation(s)
- Alex Mathews Muruppel
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, 16132 Genova, Italy
| | - B.S. Jagadish Pai
- Faculty for Diploma in Laser Dentistry, University of Genova in India, Bangalore 560071, India;
| | - Subraya Bhat
- College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam 32241, Saudi Arabia;
| | - Steven Parker
- Leicester School of Pharmacy, De Montfort University, Leicester LE1 9BH, UK; (S.P.); (E.L.)
| | - Edward Lynch
- Leicester School of Pharmacy, De Montfort University, Leicester LE1 9BH, UK; (S.P.); (E.L.)
- School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
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Ning X, Yang K, Shi W, Xu C. Comparison of hypertrophic scarring on a red Duroc pig and a Guangxi Mini Bama pig. Scars Burn Heal 2020; 6:2059513120930903. [PMID: 32637158 PMCID: PMC7318807 DOI: 10.1177/2059513120930903] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Pigs are the most promising models for the study of wound healing and hypertrophic scarring because they are anatomically and physiologically similar to human beings. The Red Duroc pig and Mini Bama pig are two swine models that have attracted a lot of attention. The aim of the present study was to examine and compare the scarring process in a red Duroc pig and a Mini Bama pig, providing knowledge for researchers and clinicians to enable them to choose the most suitable pig model for studies.
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Affiliation(s)
- Xiaoyu Ning
- School of Chemical and Biomedical Engineering Nanyang Technological University, Singapore
| | - Kai Yang
- SG Med International Pte Ltd., Singapore
| | - Wei Shi
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University, Nanjing, Jiangsu, China
| | - Chenjie Xu
- School of Chemical and Biomedical Engineering Nanyang Technological University, Singapore
- Department of Biomedical Engineering City University of Hong Kong, Kowloon, Hong Kong
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