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Zhou Z, Pandey R, Valdez TA. Label-Free Optical Technologies for Middle-Ear Diseases. Bioengineering (Basel) 2024; 11:104. [PMID: 38391590 PMCID: PMC10885954 DOI: 10.3390/bioengineering11020104] [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: 11/17/2023] [Revised: 01/11/2024] [Accepted: 01/16/2024] [Indexed: 02/24/2024] Open
Abstract
Medical applications of optical technology have increased tremendously in recent decades. Label-free techniques have the unique advantage of investigating biological samples in vivo without introducing exogenous agents. This is especially beneficial for a rapid clinical translation as it reduces the need for toxicity studies and regulatory approval for exogenous labels. Emerging applications have utilized label-free optical technology for screening, diagnosis, and surgical guidance. Advancements in detection technology and rapid improvements in artificial intelligence have expedited the clinical implementation of some optical technologies. Among numerous biomedical application areas, middle-ear disease is a unique space where label-free technology has great potential. The middle ear has a unique anatomical location that can be accessed through a dark channel, the external auditory canal; it can be sampled through a tympanic membrane of approximately 100 microns in thickness. The tympanic membrane is the only membrane in the body that is surrounded by air on both sides, under normal conditions. Despite these favorable characteristics, current examination modalities for middle-ear space utilize century-old technology such as white-light otoscopy. This paper reviews existing label-free imaging technologies and their current progress in visualizing middle-ear diseases. We discuss potential opportunities, barriers, and practical considerations when transitioning label-free technology to clinical applications.
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Affiliation(s)
- Zeyi Zhou
- School of Medicine, Stanford University, Palo Alto, CA 94305, USA
| | - Rishikesh Pandey
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Tulio A Valdez
- Department of Otolaryngology, Stanford University, Palo Alto, CA 94304, USA
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Chen CK, Lai YH, Hsieh LC, Tsui PH. Quantitative transmastoid ultrasound for detecting middle ear effusion in pediatric patients. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2023; 236:107557. [PMID: 37100023 DOI: 10.1016/j.cmpb.2023.107557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/30/2023] [Accepted: 04/17/2023] [Indexed: 05/21/2023]
Abstract
BACKGROUND AND OBJECTIVE Ultrasound has emerged as a promising modality for detecting middle ear effusion (MEE) in pediatric patients. Among different ultrasound techniques, ultrasound mastoid measurement was proposed to allow noninvasive detection of MEE by estimating the Nakagami parameters of backscattered signals to describe the echo amplitude distribution. This study further developed the multiregional-weighted Nakagami parameter (MNP) of the mastoid as a new ultrasound signature for assessing effusion severity and fluid properties in pediatric patients with MEE. METHODS A total of 197 pediatric patients (n = 133 for the training group; n = 64 for the testing group) underwent multiregional backscattering measurements of the mastoid for estimating MNP values. MEE, the severity of effusion (mild to moderate vs. severe), and the fluid properties (serous and mucous) were confirmed through otoscopy, tympanometry, and grommet surgery and were compared with the ultrasound findings. The diagnostic performance was evaluated using the area under the receiver operating characteristic curve (AUROC). RESULTS The training dataset revealed significant differences in MNPs between the control and MEE groups, between mild to moderate and severe MEE, and between serous and mucous effusion were observed (p < 0.05). As with the conventional Nakagami parameter, the MNP could be used to detect MEE (AUROC: 0.87; sensitivity: 90.16%; specificity: 75.35%). The MNP could further identify effusion severity (AUROC: 0.88; sensitivity: 73.33%; specificity: 86.87%) and revealed the possibility of characterizing fluid properties (AUROC: 0.68; sensitivity: 62.50%; specificity: 70.00%). The testing results demonstrated that the MNP method enabled MEE detection (AUROC = 0.88, accuracy = 88.28%, sensitivity = 92.59%, specificity = 84.21%), was effective in assessing MEE severity (AUROC = 0.83, accuracy = 77.78%, sensitivity = 66.67%, specificity = 83.33%), and showed potential for characterizing fluid properties of effusion (AUROC = 0.70, accuracy = 72.22%, sensitivity = 62.50%, specificity = 80.00%). CONCLUSIONS Transmastoid ultrasound combined with the MNP not only leverages the strengths of the conventional Nakagami parameter for MEE diagnosis but also provides a means to assess MEE severity and effusion properties in pediatric patients, thereby offering a comprehensive approach to noninvasive MEE evaluation.
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Affiliation(s)
- Chin-Kuo Chen
- Department of Otolaryngology-Head and Neck Surgery and Communication Enhancement Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Yan-Heng Lai
- Department of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Li-Chun Hsieh
- Department of Otolaryngology-Head and Neck Surgery, Mackay Memorial Hospital, Taipei, Taiwan; Department of Audiology and Speech Language Pathology, Mackay Medical College, New Taipei, Taiwan
| | - Po-Hsiang Tsui
- Department of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Division of Pediatric Gastroenterology, Department of Pediatrics, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Institute for Radiological Research, Chang Gung University, Taoyuan, Taiwan.
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Locke AK, Zaki FR, Fitzgerald ST, Sudhir K, Monroy GL, Choi H, Won J, Mahadevan-Jansen A, Boppart SA. Differentiation of otitis media-causing bacteria and biofilms via Raman spectroscopy and optical coherence tomography. Front Cell Infect Microbiol 2022; 12:869761. [PMID: 36034696 PMCID: PMC9400059 DOI: 10.3389/fcimb.2022.869761] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 06/30/2022] [Indexed: 11/25/2022] Open
Abstract
In the management of otitis media (OM), identification of causative bacterial pathogens and knowledge of their biofilm formation can provide more targeted treatment approaches. Current clinical diagnostic methods rely on the visualization of the tympanic membrane and lack real-time assessment of the causative pathogen(s) and the nature of any biofilm that may reside behind the membrane and within the middle ear cavity. In recent years, optical coherence tomography (OCT) has been demonstrated as an improved in vivo diagnostic tool for visualization and morphological characterization of OM biofilms and middle ear effusions; but lacks specificity about the causative bacterial species. This study proposes the combination of OCT and Raman spectroscopy (RS) to examine differences in the refractive index, optical attenuation, and biochemical composition of Haemophilus influenzae, Streptococcus pneumoniae, Moraxella catarrhalis, and Pseudomonas aeruginosa; four of the leading otopathogens in OM. This combination provides a dual optical approach for identifying and differentiating OM-causing bacterial species under three different in vitro growth environments (i.e., agar-grown colonies, planktonic cells from liquid cultures, and biofilms). This study showed that RS was able to identify key biochemical variations to differentiate all four OM-causing bacteria. Additionally, biochemical spectral changes (RS) and differences in the mean attenuation coefficient (OCT) were able to distinguish the growth environment for each bacterial species.
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Affiliation(s)
- Andrea K. Locke
- Vanderbilt Biophotonics Center, School of Engineering, Vanderbilt University, Nashville, TN, United States
- Department of Biomedical Engineering, School of Engineering, Vanderbilt University, Nashville, TN, United States
- Department of Chemistry, College of Arts and Science, Vanderbilt University, Nashville, TN, United States
| | - Farzana R. Zaki
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana–Champaign, Urbana, IL, United States
| | - Sean T. Fitzgerald
- Vanderbilt Biophotonics Center, School of Engineering, Vanderbilt University, Nashville, TN, United States
- Department of Biomedical Engineering, School of Engineering, Vanderbilt University, Nashville, TN, United States
| | - Kavya Sudhir
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana–Champaign, Urbana, IL, United States
- Department of Bioengineering, The Grainger College of Engineering, University of Illinois at Urbana–Champaign, Urbana, IL, United States
| | - Guillermo L. Monroy
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana–Champaign, Urbana, IL, United States
| | - Honggu Choi
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana–Champaign, Urbana, IL, United States
| | - Jungeun Won
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana–Champaign, Urbana, IL, United States
- Department of Bioengineering, The Grainger College of Engineering, University of Illinois at Urbana–Champaign, Urbana, IL, United States
| | - Anita Mahadevan-Jansen
- Vanderbilt Biophotonics Center, School of Engineering, Vanderbilt University, Nashville, TN, United States
- Department of Biomedical Engineering, School of Engineering, Vanderbilt University, Nashville, TN, United States
- Department of Otolaryngology - Head & Neck Surgery, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, TN, United States
- *Correspondence: Stephen A. Boppart, ; Anita Mahadevan-Jansen,
| | - Stephen A. Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana–Champaign, Urbana, IL, United States
- Department of Bioengineering, The Grainger College of Engineering, University of Illinois at Urbana–Champaign, Urbana, IL, United States
- Carle Illinois College of Medicine, University of Illinois at Urbana–Champaign, Urbana, IL, United States
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
- *Correspondence: Stephen A. Boppart, ; Anita Mahadevan-Jansen,
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Monroy GL, Fitzgerald ST, Locke A, Won J, Spillman DR, Ho A, Zaki FR, Choi H, Chaney EJ, Werkhaven JA, Mason KM, Mahadevan-Jansen A, Boppart SA. Multimodal Handheld Probe for Characterizing Otitis Media - Integrating Raman Spectroscopy and Optical Coherence Tomography. FRONTIERS IN PHOTONICS 2022; 3:929574. [PMID: 36479543 PMCID: PMC9720905 DOI: 10.3389/fphot.2022.929574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Otitis media (OM) is a common disease of the middle ear, affecting 80% of children before the age of three. The otoscope, a simple illuminated magnifier, is the standard clinical diagnostic tool to observe the middle ear. However, it has limited contrast to detect signs of infection, such as clearly identifying and characterizing middle ear fluid or biofilms that accumulate within the middle ear. Likewise, invasive sampling of every subject is not clinically indicated nor practical. Thus, collecting accurate noninvasive diagnostic factors is vital for clinicians to deliver a precise diagnosis and effective treatment regimen. To address this need, a combined benchtop Raman spectroscopy (RS) and optical coherence tomography (OCT) system was developed. Together, RS-OCT can non-invasively interrogate the structural and biochemical signatures of the middle ear under normal and infected conditions.In this paper, in vivo RS scans from pediatric clinical human subjects presenting with OM were evaluated in parallel with RS-OCT data of physiologically relevant in vitro ear models. Component-level characterization of a healthy tympanic membrane and malleus bone, as well as OM-related middle ear fluid, identified the optimal position within the ear for RS-OCT data collection. To address the design challenges in developing a system specific to clinical use, a prototype non-contact multimodal handheld probe was built and successfully tested in vitro. Design criteria have been developed to successfully address imaging constraints imposed by physiological characteristics of the ear and optical safety limits. Here, we present the pathway for translation of RS-OCT for non-invasive detection of OM.
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Affiliation(s)
- Guillermo L. Monroy
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Sean T. Fitzgerald
- Vanderbilt Biophotonics Center, Nashville, TN, United States
- Dept. Biomedical Engineering, Vanderbilt University, Nashville, TN, United States
| | - Andrea Locke
- Vanderbilt Biophotonics Center, Nashville, TN, United States
- Dept. Biomedical Engineering, Vanderbilt University, Nashville, TN, United States
| | - Jungeun Won
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Dept. Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Darold R. Spillman
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Alexander Ho
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Dept. Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Farzana R. Zaki
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Honggu Choi
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Eric J. Chaney
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Jay A. Werkhaven
- Dept. Otolaryngology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Kevin M. Mason
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute Nationwide Children’s Hospital, Columbus, OH, United States
| | - Anita Mahadevan-Jansen
- Vanderbilt Biophotonics Center, Nashville, TN, United States
- Dept. Biomedical Engineering, Vanderbilt University, Nashville, TN, United States
- Dept. Otolaryngology, Vanderbilt University Medical Center, Nashville, TN, United States
- Correspondence: Anita Mahadevan-Jansen, , Stephen A. Boppart,
| | - Stephen A. Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Dept. Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Dept. Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Correspondence: Anita Mahadevan-Jansen, , Stephen A. Boppart,
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Esposito S, Bianchini S, Argentiero A, Gobbi R, Vicini C, Principi N. New Approaches and Technologies to Improve Accuracy of Acute Otitis Media Diagnosis. Diagnostics (Basel) 2021; 11:2392. [PMID: 34943628 PMCID: PMC8700495 DOI: 10.3390/diagnostics11122392] [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: 11/20/2021] [Revised: 12/10/2021] [Accepted: 12/17/2021] [Indexed: 12/18/2022] Open
Abstract
Several studies have shown that in recent years incidence of acute otitis media (AOM) has declined worldwide. However, related medical, social, and economic problems for patients, their families, and society remain very high. Better knowledge of potential risk factors for AOM development and more effective preventive interventions, particularly in AOM-prone children, can further reduce disease incidence. However, a more accurate AOM diagnosis seems essential to achieve this goal. Diagnostic uncertainty is common, and to avoid risks related to a disease caused mainly by bacteria, several children without AOM are treated with antibiotics and followed as true AOM cases. The main objective of this manuscript is to discuss the most common difficulties that presently limit accurate AOM diagnosis and the new approaches and technologies that have been proposed to improve disease detection. We showed that misdiagnosis can be dangerous or lead to relevant therapeutic mistakes. The need to improve AOM diagnosis has allowed the identification of a long list of technologies to visualize and evaluate the tympanic membrane and to assess middle-ear effusion. Most of the new instruments, including light field otoscopy, optical coherence tomography, low-coherence interferometry, and Raman spectroscopy, are far from being introduced in clinical practice. Video-otoscopy can be effective, especially when it is used in association with telemedicine, parents' cooperation, and artificial intelligence. Introduction of otologic telemedicine and use of artificial intelligence among pediatricians and ENT specialists must be strongly promoted in order to reduce mistakes in AOM diagnosis.
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Affiliation(s)
- Susanna Esposito
- Pediatric Clinic, Pietro Barilla Children’s Hospital, Department of Medicine and Surgery, University of Parma, Via Gramsci 14, 43126 Parma, Italy; (S.B.); (A.A.)
| | - Sonia Bianchini
- Pediatric Clinic, Pietro Barilla Children’s Hospital, Department of Medicine and Surgery, University of Parma, Via Gramsci 14, 43126 Parma, Italy; (S.B.); (A.A.)
| | - Alberto Argentiero
- Pediatric Clinic, Pietro Barilla Children’s Hospital, Department of Medicine and Surgery, University of Parma, Via Gramsci 14, 43126 Parma, Italy; (S.B.); (A.A.)
| | - Riccardo Gobbi
- Head-Neck and Oral Surgery Unit, Department of Head-Neck Surgery, Otolaryngology, Morgagni Piertoni Hospital, 47121 Forlì, Italy; (R.G.); (C.V.)
| | - Claudio Vicini
- Head-Neck and Oral Surgery Unit, Department of Head-Neck Surgery, Otolaryngology, Morgagni Piertoni Hospital, 47121 Forlì, Italy; (R.G.); (C.V.)
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Tanwar S, Paidi SK, Prasad R, Pandey R, Barman I. Advancing Raman spectroscopy from research to clinic: Translational potential and challenges. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 260:119957. [PMID: 34082350 DOI: 10.1016/j.saa.2021.119957] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/08/2021] [Accepted: 05/10/2021] [Indexed: 05/18/2023]
Abstract
Raman spectroscopy has emerged as a non-invasive and versatile diagnostic technique due to its ability to provide molecule-specific information with ultrahigh sensitivity at near-physiological conditions. Despite exhibiting substantial potential, its translation from optical bench to clinical settings has been impacted by associated limitations. This perspective discusses recent clinical and biomedical applications of Raman spectroscopy and technological advancements that provide valuable insights and encouragement for resolving some of the most challenging hurdles.
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Affiliation(s)
- Swati Tanwar
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, United States
| | - Santosh Kumar Paidi
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, United States
| | - Ram Prasad
- Department of Botany, School of Life Sciences, Mahatma Gandhi Central University, Motihari, Bihar 845401, India
| | - Rishikesh Pandey
- CytoVeris Inc., Farmington, CT 06032, United States; Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, United States.
| | - Ishan Barman
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, United States; The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University, School of Medicine, Baltimore, MD 21205, United States; Department of Oncology, Johns Hopkins University, Baltimore, MD 21287, United States.
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Erickson-DiRenzo E, Singh SP, Martinez JD, Sanchez SE, Easwaran M, Valdez TA. Cigarette smoke-induced changes in the murine vocal folds: a Raman spectroscopic observation. Analyst 2021; 145:7709-7717. [PMID: 32996925 DOI: 10.1039/d0an01570a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Raman spectroscopic methods are being projected as novel tools to study the early invisible molecular level changes in a label-free manner. In the present study, we have used Raman spectroscopy to explore the earliest biochemical changes in murine vocal folds in response to time-bound cigarette smoke exposure. Mice were exposed to cigarette smoke for 2 or 4-weeks through a customized smoke inhalation system. The larynx was collected and initial evaluations using standard methods of analysis such as histopathology and immunofluorescence was performed. Concurrent unstained sections were used for Raman imaging. Two common pathological features of vocal fold disorders including alterations in collagen content and epithelial hypercellularity, or hyperplasia, were observed. The mean spectra, principal component analysis, and Raman mapping also revealed differences in the collagen content and hypercellularity in the smoke exposed tissues. The differences in 2-week exposed tissues were found to be more prominent as compared to 4-week. This was attributed to adaptive responses and the already reported biphasic effects, which suggest that collagen synthesis is significantly reduced at higher cigarette smoke concentrations. Overall findings of the study are supportive of the prospective application of Raman imaging in monitoring changes due to cigarette smoke in the vocal folds.
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Affiliation(s)
- Elizabeth Erickson-DiRenzo
- Department of Otolaryngology - Head & Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA.
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Kirchberger-Tolstik T, Pradhan P, Vieth M, Grunert P, Popp J, Bocklitz TW, Stallmach A. Towards an Interpretable Classifier for Characterization of Endoscopic Mayo Scores in Ulcerative Colitis Using Raman Spectroscopy. Anal Chem 2020; 92:13776-13784. [PMID: 32965101 DOI: 10.1021/acs.analchem.0c02163] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ulcerative colitis (UC) is one of the main types of chronic inflammatory diseases that affect the bowel, but its pathogenesis is yet to be completely defined. Assessing the disease activity of UC is vital for developing a personalized treatment. Conventionally, the assessment of UC is performed by colonoscopy and histopathology. However, conventional methods fail to retain biomolecular information associated to the severity of UC and are solely based on morphological characteristics of the inflamed colon. Furthermore, assessing endoscopic disease severity is limited by the requirement for experienced human reviewers. Therefore, this work presents a nondestructive biospectroscopic technique, for example, Raman spectroscopy, for assessing endoscopic disease severity according to the four-level Mayo subscore. This contribution utilizes multidimensional Raman spectroscopic data to generate a predictive model for identifying colonic inflammation. The predictive modeling of the Raman spectroscopic data is performed using a one-dimensional deep convolutional neural network (1D-CNN). The classification results of 1D-CNN achieved a mean sensitivity of 78% and a mean specificity of 93% for the four Mayo endoscopic scores. Furthermore, the results of the 1D-CNN are interpreted by a first-order Taylor expansion, which extracts the Raman bands important for classification. Additionally, a regression model of the 1D-CNN model is constructed to study the extent of misclassification and border-line patients. The overall results of Raman spectroscopy with 1D-CNN as a classification and regression model show a good performance, and such a method can serve as a complementary method for UC analysis.
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Affiliation(s)
- Tatiana Kirchberger-Tolstik
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technology, 07745 Jena, Germany.,Department of Internal Medicine IV (Gastroenterology, Hepatology, Infectious Disease), Jena University Hospital, 07747 Jena, Germany
| | - Pranita Pradhan
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University, 07743 Jena, Germany.,Leibniz Institute of Photonic Technology, Member of Leibniz Health Technology, 07745 Jena, Germany
| | - Michael Vieth
- Klinikum Bayreuth GmbH, Preuschwitzer Str. 101, 95445 Bayreuth, Germany
| | - Philip Grunert
- Department of Internal Medicine IV (Gastroenterology, Hepatology, Infectious Disease), Jena University Hospital, 07747 Jena, Germany
| | - Juergen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University, 07743 Jena, Germany.,Leibniz Institute of Photonic Technology, Member of Leibniz Health Technology, 07745 Jena, Germany
| | - Thomas Wilhelm Bocklitz
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University, 07743 Jena, Germany.,Leibniz Institute of Photonic Technology, Member of Leibniz Health Technology, 07745 Jena, Germany
| | - Andreas Stallmach
- Department of Internal Medicine IV (Gastroenterology, Hepatology, Infectious Disease), Jena University Hospital, 07747 Jena, Germany
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Gisselsson-Solén M, Tähtinen PA, Ryan AF, Mulay A, Kariya S, Schilder AG, Valdez TA, Brown S, Nolan RM, Hermansson A, van Ingen G, Marom T. Panel 1: Biotechnology, biomedical engineering and new models of otitis media. Int J Pediatr Otorhinolaryngol 2020; 130 Suppl 1:109833. [PMID: 31901291 PMCID: PMC7176743 DOI: 10.1016/j.ijporl.2019.109833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To summarize recently published key articles on the topics of biomedical engineering, biotechnology and new models in relation to otitis media (OM). DATA SOURCES Electronic databases: PubMed, Ovid Medline, Cochrane Library and Clinical Evidence (BMJ Publishing). REVIEW METHODS Articles on biomedical engineering, biotechnology, material science, mechanical and animal models in OM published between May 2015 and May 2019 were identified and subjected to review. A total of 132 articles were ultimately included. RESULTS New imaging technologies for the tympanic membrane (TM) and the middle ear cavity are being developed to assess TM thickness, identify biofilms and differentiate types of middle ear effusions. Artificial intelligence (AI) has been applied to train software programs to diagnose OM with a high degree of certainty. Genetically modified mice models for OM have further investigated what predisposes some individuals to OM and consequent hearing loss. New vaccine candidates protecting against major otopathogens are being explored and developed, especially combined vaccines, targeting more than one pathogen. Transcutaneous vaccination against non-typeable Haemophilus influenzae has been successfully tried in a chinchilla model. In terms of treatment, novel technologies for trans-tympanic drug delivery are entering the clinical domain. Various growth factors and grafting materials aimed at improving healing of TM perforations show promising results in animal models. CONCLUSION New technologies and AI applications to improve the diagnosis of OM have shown promise in pre-clinical models and are gradually entering the clinical domain. So are novel vaccines and drug delivery approaches that may allow local treatment of OM. IMPLICATIONS FOR PRACTICE New diagnostic methods, potential vaccine candidates and the novel trans-tympanic drug delivery show promising results, but are not yet adapted to clinical use.
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Affiliation(s)
- Marie Gisselsson-Solén
- Department of Clinical Sciences, Division of Otorhinolaryngology, Head and Neck Surgery, Lund University Hospital, Lund, Sweden
| | - Paula A. Tähtinen
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, Turku, Finland
| | - Allen F. Ryan
- Division of Otolaryngology, Department of Surgery, University of California, San Diego, La Jolla, CA, USA,San Diego Veterans Affairs Healthcare System, Research Department, San Diego, CA, USA
| | - Apoorva Mulay
- The Stripp Lab, Pulmonary Department, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Shin Kariya
- Department of Otolaryngology-Head and Neck Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Anne G.M. Schilder
- EvidENT, Ear Institute, University College London, London, UK,National Institute for Health Research University College London Biomedical Research Centre, London, UK,Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Tulio A. Valdez
- Department of Otolaryngology Head & Neck Surgery, Stanford University, Palo Alto, CA, USA
| | - Steve Brown
- MRC Harwell Institute, Mammalian Genetics Unit, Harwell Campus, Oxfordshire, UK
| | | | - Ann Hermansson
- Department of Clinical Sciences, Division of Otorhinolaryngology, Head and Neck Surgery, Lund University Hospital, Lund, Sweden
| | - Gijs van Ingen
- Department of Otolaryngology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Tal Marom
- Department of Otolaryngology-Head and Neck Surgery, Samson Assuta Ashdod University Hospital, Faculty of Health Sciences Ben Gurion University, Ashdod, Israel.
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Krafft C, Popp J. Medical needs for translational biophotonics with the focus on Raman‐based methods. TRANSLATIONAL BIOPHOTONICS 2019. [DOI: 10.1002/tbio.201900018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology Jena Germany
- Institute of Physical Chemistry and Abbe Center of PhotonicsFriedrich Schiller University Jena Jena Germany
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Zhang C, Springall JS, Wang X, Barman I. Rapid, quantitative determination of aggregation and particle formation for antibody drug conjugate therapeutics with label-free Raman spectroscopy. Anal Chim Acta 2019; 1081:138-145. [PMID: 31446951 PMCID: PMC6750807 DOI: 10.1016/j.aca.2019.07.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/21/2019] [Accepted: 07/04/2019] [Indexed: 12/17/2022]
Abstract
Lot release and stability testing of biologics are essential parts of the quality control strategy for ensuring therapeutic material dosed to patients is safe and efficacious, and consistent with previous clinical and toxicological experience. Characterization of protein aggregation is of particular significance, as aggregates may lose the intrinsic pharmaceutical properties as well as engage with the immune system instigating undesirable downstream immunogenicity. While important, real-time identification and quantification of subvisible particles in the monoclonal antibody (mAb) drug products remains inaccessible with existing techniques due to limitations in measurement time, sensitivity or experimental conditions. Here, owing to its exquisite molecular specificity, non-perturbative nature and lack of sample preparation requirements, we propose label-free Raman spectroscopy in conjunction with multivariate analysis as a solution to this unmet need. By leveraging subtle, but consistent, differences in vibrational modes of the biologics, we have developed a support vector machine-based regression model that provides fast, accurate prediction for a wide range of protein aggregations. Moreover, in blinded experiments, the model shows the ability to precisely differentiate between aggregation levels in mAb like product samples pre- and post-isothermal incubation, where an increase in aggregate levels was experimentally determined. In addition to offering fresh insights into mAb like product-specific aggregation mechanisms that can improve engineering of new protein therapeutics, our results highlight the potential of Raman spectroscopy as an in-line analytical tool for monitoring protein particle formation.
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Affiliation(s)
- Chi Zhang
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Jeremy S Springall
- AstraZeneca, R&D Biopharmaceuticals, Biopharmaceutical Product Development, Analytical Sciences, Gaithersburg, MD, USA.
| | - Xiangyang Wang
- AstraZeneca, R&D Biopharmaceuticals, Biopharmaceutical Product Development, Analytical Sciences, Gaithersburg, MD, USA
| | - Ishan Barman
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, USA; Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Radiology & Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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12
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Singh SP, Xia A, Tusty M, Victorovich Malkovskiy A, Easwaran M, Zarabanda D, Valdez TA. Identification of early inflammatory changes in the tympanic membrane with Raman spectroscopy. Analyst 2019; 144:6721-6728. [PMID: 31612878 DOI: 10.1039/c9an01772k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The tympanic membrane (TM) is a dynamic structure that separates the middle ear from the external auditory canal. It is also integral for the transmission of sound waves. In this study, we demonstrate the feasibility of using Raman spectroscopy to identify early chemical changes resulting from inflammation in the TM that can serve as an indicator of acute otitis media. Bacterial lipopolysaccharide (LPS) was injected trans-tympanicaly in a murine model. Presence of inflammatory response was assessed with binocular microscopy, confirmed with histopathology and immunofluorescence staining. Successful discrimination suggesting spectral differences among the control and LPS treated groups was achieved using principal component analysis. Raman imaging revealed major differences in collagen distribution and nucleic acid content. Image segmentation analysis on the trichrome stained tissue sections was performed to corroborate the Raman spectra. The spectral co-localization study suggests changes in the expression of collagen IV specific signals in LPS treated samples. The overall findings of the study support prospective application of RS in the diagnosis and therapeutic monitoring of otitis media.
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Affiliation(s)
- S P Singh
- Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Stanford University, Palo Alto, CA 94305, USA.
| | - Anping Xia
- Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Stanford University, Palo Alto, CA 94305, USA.
| | - Mahbuba Tusty
- Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Stanford University, Palo Alto, CA 94305, USA.
| | | | - Meena Easwaran
- Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Stanford University, Palo Alto, CA 94305, USA.
| | - David Zarabanda
- Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Stanford University, Palo Alto, CA 94305, USA.
| | - Tulio A Valdez
- Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Stanford University, Palo Alto, CA 94305, USA.
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13
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Pandey R, Zhou R, Bordett R, Hunter C, Glunde K, Barman I, Valdez T, Finck C. Integration of diffraction phase microscopy and Raman imaging for label-free morpho-molecular assessment of live cells. JOURNAL OF BIOPHOTONICS 2019; 12:e201800291. [PMID: 30421505 PMCID: PMC6447451 DOI: 10.1002/jbio.201800291] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/15/2018] [Accepted: 11/09/2018] [Indexed: 05/05/2023]
Abstract
Label-free quantitative imaging is highly desirable for studying live cells by extracting pathophysiological information without perturbing cell functions. Here, we demonstrate a novel label-free multimodal optical imaging system with the capability of providing comprehensive morphological and molecular attributes of live cells. Our morpho-molecular microscopy (3M) system draws on the combined strength of quantitative phase microscopy (QPM) and Raman microscopy to probe the morphological features and molecular fingerprinting characteristics of each cell under observation. While the commonr-path geometry of our QPM system allows for highly sensitive phase measurement, the Raman microscopy is equipped with dual excitation wavelengths and utilizes the same detection and dispersion system, making it a distinctive multi-wavelength system with a small footprint. We demonstrate the applicability of the 3M system by investigating nucleated and nonnucleated cells. This integrated label-free platform has a promising potential in preclinical research, as well as in clinical diagnosis in the near future.
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Affiliation(s)
- Rishikesh Pandey
- Connecticut Children's Innovation Center, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Renjie Zhou
- Department of Chemistry, Laser Biomedical Research Center, George R. Harrison Spectroscopy Lab, Massachusetts Institute of Technology, Cambridge, Massachusetts
- Laser Metrology and Biomedicine Lab, Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
- Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, China
| | - Rosalie Bordett
- Connecticut Children's Innovation Center, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Ciera Hunter
- Connecticut Children's Innovation Center, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Kristine Glunde
- The Johns Hopkins University School of Medicine, The Sidney Kimmel Comprehensive Cancer Center, Baltimore, Maryland
| | - Ishan Barman
- The Johns Hopkins University School of Medicine, The Sidney Kimmel Comprehensive Cancer Center, Baltimore, Maryland
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland
| | - Tulio Valdez
- Department of Otolaryngology, Stanford University, Palo Alto, California
| | - Christine Finck
- Connecticut Children's Innovation Center, University of Connecticut School of Medicine, Farmington, Connecticut
- Department of Surgery, Connecticut Children's Medical Center, Harford, Connecticut
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