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Stanford CM, Chvartszaid D, Ellingsen JE, Oates TW, Osswald M, Estafanous E. Clinical Performance of Dental Implants. Int J Oral Maxillofac Implants 2024; 39:201-205. [PMID: 38657214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024] Open
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2
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Chvartszaid D, Oates TW, Estafanous E, Ellingsen JE, Osswald M. Socket Shield Technique: A New Way to Deal with an Old Problem. Int J Oral Maxillofac Implants 2023; 38:1078-1082. [PMID: 38085738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023] Open
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3
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Chvartszaid D, Oates TW, Estafanous E, Ellingsen JE, Osswald M. Thematic Abstract Review: The Use of Short Dental Implants: Where Are We Today? Int J Oral Maxillofac Implants 2023; 38:842-846. [PMID: 37847826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023] Open
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4
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Lan X, Ma Z, Kunze M, Mulet-Sierra A, Osswald M, Ansari K, Seikaly H, Boluk Y, Adesida AB. The Effect of Crosslinking Density on Nasal Chondrocytes' Redifferentiation. Ann Biomed Eng 2023:10.1007/s10439-023-03184-3. [PMID: 37005947 DOI: 10.1007/s10439-023-03184-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 02/27/2023] [Indexed: 04/04/2023]
Abstract
Hydrogels appear to be an attractive class of biomaterial for cartilage tissue engineering due to their high water content, excellent biocompatibility, tunable stiffness, etc. The crosslinking density of the hydrogel can affect their viscoelastic property, and therefore potentially impact the chondrogenic phenotype of re-differentiated chondrocytes in a 3D microenvironment through physical cues. To understand the effect of crosslinking densities on chondrocytes phenotype and cellular interaction with the hydrogel, this study utilized a clinical grade thiolate hyaluronic acid and thiolate gelatin (HA-Gel) hydrogel, crosslinked with poly(ethylene glycol) diacrylate to create various crosslinking densities. The HA-Gel hydrogels were then mixed with human nasal chondrocytes to generate neocartilage in vitro. The influence of the hydrogel crosslinking density and the viscoelastic property on the cell behaviours on the gene and matrix levels were evaluated using biochemistry assays, histology, quantitative polymerase chain reaction (qPCR) and next-generation sequencing (RNA seq). In general, the differences in the storage modulus of the HA-Gel hydrogel are not enough to alter the cartilaginous gene expression of chondrocytes. However, a positively correlated trend of PPAR-γ gene expression to the crosslinking density was measured by qPCR. The RNA-seq results have shown that 178 genes are significantly negatively correlated and 225 genes are positively correlated to the crosslinking density, which is worth investigating in the future studies.
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Affiliation(s)
- Xiaoyi Lan
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB, Canada
| | - Zhiyao Ma
- Department of Surgery, Divisions of Orthopedic Surgery and Surgical Research, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada
| | - Melanie Kunze
- Department of Surgery, Divisions of Orthopedic Surgery and Surgical Research, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada
| | - Aillette Mulet-Sierra
- Department of Surgery, Divisions of Orthopedic Surgery and Surgical Research, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada
| | - Martin Osswald
- Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, AB, Canada
- Department of Surgery, Division of Otolaryngology, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada
| | - Khalid Ansari
- Department of Surgery, Division of Otolaryngology, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada
| | - Hadi Seikaly
- Department of Surgery, Division of Otolaryngology, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada
| | - Yaman Boluk
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB, Canada.
| | - Adetola B Adesida
- Department of Surgery, Divisions of Orthopedic Surgery and Surgical Research, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada.
- Department of Surgery, Division of Otolaryngology, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada.
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Idris S, Logan H, Tabet P, Osswald M, Nayar S, Seikaly H. The Accuracy of 3D Surgical Design and Simulation in Prefabricated Fibula Free Flaps for Jaw Reconstruction. J Pers Med 2022; 12:jpm12111766. [PMID: 36579487 PMCID: PMC9698275 DOI: 10.3390/jpm12111766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 01/01/2023] Open
Abstract
The ideal jaw reconstruction involves the restoration and maintenance of jaw continuity, jaw relations, joint alignment, and facial contour, and, most importantly, dental occlusal reconstruction. One of the essential requirements of achieving a consistent functional outcome is to place the bony reconstruction in the correct three-dimensional position as it relates to the other jaw segments and dentition. A protocol of occlusion-driven reconstruction of prefabricated fibular free flaps that are customized to the patient with surgical design and simulation (SDS)-planned osseointegrated implant installation was developed by our institution. This innovation introduced significant flexibility and efficiency to jaw reconstructions, but functional and cosmetic outcomes were dependent on the accuracy of the final reconstructions when compared to the SDS plan. The purpose of this study was to examine the accuracy of the SDS-planned fibular flap prefabrication in a cohort of patients undergoing jaw reconstruction. All patients that had undergone primary jaw reconstruction with prefabricated fibular free flaps were reviewed. The primary outcome of this study was the accuracy of the postoperative implant positions as compared to the SDS plan. A total of 23 implants were included in the analysis. All flaps survived, there was no implant loss postoperatively, and all the patients underwent all stages of the reconstruction. SDS planning of fibular flap prefabrication resulted in better than 2 mm accuracy of osteointegrated implant placement in a cohort of patients undergoing jaw reconstruction. This accuracy could potentially result in improved functional and cosmetic outcomes.
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Affiliation(s)
- Sherif Idris
- Division of Otolaryngology—Head and Neck Surgery, Department of Surgery, University of Alberta, Edmonton, AB T6G 2B7, Canada
| | - Heather Logan
- Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, AB T5R 4H5, Canada
| | - Paul Tabet
- Division of Otolaryngology—Head and Neck Surgery, Department of Surgery, University of Alberta, Edmonton, AB T6G 2B7, Canada
- Division of Otolaryngology-Head & Neck Surgery, Department of Surgery, Université de Montréal, Montreal, PQ H1T 2M4, Canada
| | - Martin Osswald
- Division of Otolaryngology—Head and Neck Surgery, Department of Surgery, University of Alberta, Edmonton, AB T6G 2B7, Canada
- Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, AB T5R 4H5, Canada
| | - Suresh Nayar
- Division of Otolaryngology—Head and Neck Surgery, Department of Surgery, University of Alberta, Edmonton, AB T6G 2B7, Canada
- Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, AB T5R 4H5, Canada
| | - Hadi Seikaly
- Division of Otolaryngology—Head and Neck Surgery, Department of Surgery, University of Alberta, Edmonton, AB T6G 2B7, Canada
- Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, AB T5R 4H5, Canada
- Correspondence: ; Tel.: +1-(780)-407-3691
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Roeder M, Sievi NA, Schneider A, Osswald M, Malesevic S, Kolios A, Nilsson J, Kohler M, Franzen D. The prevalence of obstructive sleep apnea in sarcoidosis and its impact on sleepiness, fatigue, and sleep-associated quality of life: a cross-sectional study with matched controls (the OSASA study). J Clin Sleep Med 2022; 18:2415-2422. [PMID: 35855534 PMCID: PMC9516590 DOI: 10.5664/jcsm.10140] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/30/2022] [Accepted: 06/02/2022] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Patients with sarcoidosis experience fatigue and excessive daytime sleepiness (EDS). However, the underlying pathomechanism is unclear. Studies suggested undiagnosed obstructive sleep apnea (OSA) to be an important contributor, but reliable data on prevalence and impact of OSA in sarcoidosis are scarce. METHODS 71 adult patients with sarcoidosis, 1-to-1 matched to 71 adult controls according to sex, age, and body mass index were included. Participants underwent structured interviews (including Epworth Sleepiness Scale [ESS], Fatigue Assessment Scale [FAS], and Functional Outcome of Sleep Questionnaire [FOSQ-30]) and level-3 respiratory polygraphy. OSA was defined as apnea-hypopnea index ≥ 5 events/h. Prevalence of OSA was assessed and possible risk factors for OSA in sarcoidosis were investigated. RESULTS Mild OSA (AHI ≥ 5 events/h) was prevalent in 32 (45%) sarcoidosis patients vs 22 (31%) controls (P = .040). Sarcoidosis patients presented higher ESS compared with matched controls (P = .037). FAS scores (median [quartile] of 21.5 [16, 27.5]) indicated fatigue in sarcoidosis patients. Patients with EDS (ESS ≥ 11) presented reduced FOSQ-30 results (median [quartile] of 16.7 [15.2, 17.8]). ESS, FAS, and FOSQ were not associated with AHI in sarcoidosis patients. Body mass index, sex, neck circumference, and NoSAS score were predictors for OSA in sarcoidosis. CONCLUSIONS The risk for mild OSA is 2.5-fold higher in sarcoidosis patients compared with matched controls. OSA seems not to be the reason for increased sleepiness or fatigue in sarcoidosis. Risk factors such as body mass index, sex, neck circumference, and NoSAS score can be used to screen for OSA in sarcoidosis patients. CLINICAL TRIAL REGISTRATION Registry: ClinicalTrials.gov; Name: Obstructive Sleep Apnoea in Sarcoidosis (OSASA); URL: https://clinicaltrials.gov/ct2/history/NCT04156789?V_2=View; Identifier: NCT04156789. CITATION Roeder M, Sievi NA, Schneider A, et al. The prevalence of obstructive sleep apnea in sarcoidosis and its impact on sleepiness, fatigue, and sleep-associated quality of life: a cross-sectional study with matched controls (the OSASA study). J Clin Sleep Med. 2022;18(10):2415-2422.
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Affiliation(s)
- Maurice Roeder
- Department of Pulmonology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Noriane A. Sievi
- Department of Pulmonology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Alexandra Schneider
- Department of Pulmonology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Martin Osswald
- Department of Pulmonology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Stefan Malesevic
- Department of Pulmonology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Antonios Kolios
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - Jakob Nilsson
- Department of Clinical Immunology, University Hospital Zurich, Zurich, Switzerland
| | - Malcolm Kohler
- Department of Pulmonology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Zurich Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Daniel Franzen
- Department of Pulmonology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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Streckenbach B, Osswald M, Malesevic S, Zenobi R, Kohler M. Validating Discriminative Signatures for Obstructive Sleep Apnea in Exhaled Breath. Cells 2022; 11:cells11192982. [PMID: 36230943 PMCID: PMC9563926 DOI: 10.3390/cells11192982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
Rapid and reliable tools for the diagnosis and monitoring of obstructive sleep apnea (OSA) are currently lacking. Prior studies using a chemical analysis of exhaled breath have suggested the existence of an OSA-specific metabolic signature. Here, we validated this diagnostic approach and the proposed marker compounds, as well as their potential to reliably diagnose OSA. In this cross-sectional observational study, exhaled breath was analyzed using secondary electrospray ionization high-resolution mass spectrometry. The study cohort included untreated OSA patients, OSA patients treated with continuous positive airway pressure and healthy subjects. The robustness of previously reported OSA markers was validated based on detectability, significant differences between groups (Mann–Whitney U test) and classification performance. The breath analysis of 118 participants resulted in 42 previously reported markers that could be confirmed in this independent validation cohort. Nine markers were significantly increased in untreated OSA compared to treated OSA, with a subset of them being consistent with a previous validation study. An OSA prediction based on the confirmed OSA signature performed with an AUC of 0.80 (accuracy 77%, sensitivity 73% and specificity 80%). As several breath markers were clearly found to be repeatable and robust in this independent validation study, these results underscore the clinical potential of breath analysis for OSA diagnostics and monitoring.
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Affiliation(s)
- Bettina Streckenbach
- ETH Zurich, Department of Chemistry and Applied Biosciences, 8093 Zurich, Switzerland
| | - Martin Osswald
- Department of Pulmonology, University Hospital Zürich, 8091 Zurich, Switzerland
| | - Stefan Malesevic
- Department of Pulmonology, University Hospital Zürich, 8091 Zurich, Switzerland
| | - Renato Zenobi
- ETH Zurich, Department of Chemistry and Applied Biosciences, 8093 Zurich, Switzerland
| | - Malcolm Kohler
- Department of Pulmonology, University Hospital Zürich, 8091 Zurich, Switzerland
- Correspondence:
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Lan X, Liang Y, Vyhlidal M, Erkut EJN, Kunze M, Mulet-Sierra A, Osswald M, Ansari K, Seikaly H, Boluk Y, Adesida AB. In vitro maturation and in vivo stability of bioprinted human nasal cartilage. J Tissue Eng 2022; 13:20417314221086368. [PMID: 35599742 PMCID: PMC9122109 DOI: 10.1177/20417314221086368] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 02/23/2022] [Indexed: 11/25/2022] Open
Abstract
The removal of skin cancer lesions on the nose often results in the loss of nasal
cartilage. The cartilage loss is either surgically replaced with autologous
cartilage or synthetic grafts. However, these replacement options come with
donor-site morbidity and resorption issues. 3-dimensional (3D) bioprinting
technology offers the opportunity to engineer anatomical-shaped autologous nasal
cartilage grafts. The 3D bioprinted cartilage grafts need to embody a
mechanically competent extracellular matrix (ECM) to allow for surgical suturing
and resistance to contraction during scar tissue formation. We investigated the
effect of culture period on ECM formation and mechanical properties of 3D
bioprinted constructs of human nasal chondrocytes (hNC)-laden type I collagen
hydrogel in vitro and in vivo. Tissue-engineered nasal cartilage constructs
developed from hNC culture in clinically approved collagen type I and type III
semi-permeable membrane scaffold served as control. The resulting 3D bioprinted
engineered nasal cartilage constructs were comparable or better than the
controls both in vitro and in vivo. This study demonstrates that 3D bioprinted
constructs of engineered nasal cartilage are feasible options in nasal cartilage
reconstructive surgeries.
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Affiliation(s)
- Xiaoyi Lan
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB, Canada
| | - Yan Liang
- Division of Orthopedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Margaret Vyhlidal
- Division of Orthopedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Esra JN Erkut
- Division of Orthopedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Melanie Kunze
- Division of Orthopedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Aillette Mulet-Sierra
- Division of Orthopedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Martin Osswald
- Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, AB, Canada
- Division of Otolaryngology, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Khalid Ansari
- Division of Otolaryngology, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Hadi Seikaly
- Division of Otolaryngology, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Yaman Boluk
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB, Canada
| | - Adetola B Adesida
- Division of Orthopedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, Canada
- Division of Otolaryngology, Department of Surgery, University of Alberta, Edmonton, AB, Canada
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Nowak N, Gaisl T, Miladinovic D, Marcinkevics R, Osswald M, Bauer S, Buhmann J, Zenobi R, Sinues P, Brown SA, Kohler M. Rapid and reversible control of human metabolism by individual sleep states. Cell Rep 2021; 37:109903. [PMID: 34706242 DOI: 10.1016/j.celrep.2021.109903] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 09/14/2021] [Accepted: 10/06/2021] [Indexed: 11/18/2022] Open
Abstract
Sleep is crucial to restore body functions and metabolism across nearly all tissues and cells, and sleep restriction is linked to various metabolic dysfunctions in humans. Using exhaled breath analysis by secondary electrospray ionization high-resolution mass spectrometry, we measured the human exhaled metabolome at 10-s resolution across a night of sleep in combination with conventional polysomnography. Our subsequent analysis of almost 2,000 metabolite features demonstrates rapid, reversible control of major metabolic pathways by the individual vigilance states. Within this framework, whereas a switch to wake reduces fatty acid oxidation, a switch to slow-wave sleep increases it, and the transition to rapid eye movement sleep results in elevation of tricarboxylic acid (TCA) cycle intermediates. Thus, in addition to daily regulation of metabolism, there exists a surprising and complex underlying orchestration across sleep and wake. Both likely play an important role in optimizing metabolic circuits for human performance and health.
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Affiliation(s)
- Nora Nowak
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich 8093, Switzerland; Department of Pulmonology, University Hospital Zurich, Zurich 8091, Switzerland; Institute of Pharmacology and Toxicology, University of Zurich, Zurich 8057, Switzerland
| | - Thomas Gaisl
- Department of Pulmonology, University Hospital Zurich, Zurich 8091, Switzerland
| | | | | | - Martin Osswald
- Department of Pulmonology, University Hospital Zurich, Zurich 8091, Switzerland
| | - Stefan Bauer
- Department of Computer Science, ETH Zurich, Zurich 8092, Switzerland
| | - Joachim Buhmann
- Department of Computer Science, ETH Zurich, Zurich 8092, Switzerland
| | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich 8093, Switzerland
| | - Pablo Sinues
- University Children's Hospital Basel, Basel 4056, Switzerland; Department of Biomedical Engineering, University of Basel, Allschwil 4123, Switzerland
| | - Steven A Brown
- Institute of Pharmacology and Toxicology, University of Zurich, Zurich 8057, Switzerland.
| | - Malcolm Kohler
- Department of Pulmonology, University Hospital Zurich, Zurich 8091, Switzerland.
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Singh KD, Osswald M, Ziesenitz VC, Awchi M, Usemann J, Imbach LL, Kohler M, García-Gómez D, van den Anker J, Frey U, Datta AN, Sinues P. Personalised therapeutic management of epileptic patients guided by pathway-driven breath metabolomics. Commun Med (Lond) 2021; 1:21. [PMID: 35602217 PMCID: PMC9053280 DOI: 10.1038/s43856-021-00021-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 07/15/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Therapeutic management of epilepsy remains a challenge, since optimal systemic antiseizure medication (ASM) concentrations do not always correlate with improved clinical outcome and minimal side effects. We tested the feasibility of noninvasive real-time breath metabolomics as an extension of traditional therapeutic drug monitoring for patient stratification by simultaneously monitoring drug-related and drug-modulated metabolites. METHODS This proof-of-principle observational study involved 93 breath measurements of 54 paediatric patients monitored over a period of 2.5 years, along with an adult's cohort of 37 patients measured in two different hospitals. Exhaled breath metabolome of epileptic patients was measured in real time using secondary electrospray ionisation-high-resolution mass spectrometry (SESI-HRMS). RESULTS We show that systemic ASM concentrations could be predicted by the breath test. Total and free valproic acid (VPA, an ASM) is predicted with concordance correlation coefficient (CCC) of 0.63 and 0.66, respectively. We also find (i) high between- and within-subject heterogeneity in VPA metabolism; (ii) several amino acid metabolic pathways are significantly enriched (p < 0.01) in patients suffering from side effects; (iii) tyrosine metabolism is significantly enriched (p < 0.001), with downregulated pathway compounds in non-responders. CONCLUSIONS These results show that real-time breath analysis of epileptic patients provides reliable estimations of systemic drug concentrations along with risk estimates for drug response and side effects.
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Affiliation(s)
- Kapil Dev Singh
- grid.6612.30000 0004 1937 0642University Children’s Hospital Basel, University of Basel, Basel, Switzerland ,grid.6612.30000 0004 1937 0642Department of Biomedical Engineering, University of Basel, Basel, Switzerland
| | - Martin Osswald
- grid.7400.30000 0004 1937 0650University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Victoria C. Ziesenitz
- grid.6612.30000 0004 1937 0642University Children’s Hospital Basel, University of Basel, Basel, Switzerland
| | - Mo Awchi
- grid.6612.30000 0004 1937 0642University Children’s Hospital Basel, University of Basel, Basel, Switzerland ,grid.6612.30000 0004 1937 0642Department of Biomedical Engineering, University of Basel, Basel, Switzerland
| | - Jakob Usemann
- grid.6612.30000 0004 1937 0642University Children’s Hospital Basel, University of Basel, Basel, Switzerland
| | - Lukas L. Imbach
- grid.7400.30000 0004 1937 0650University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Malcolm Kohler
- grid.7400.30000 0004 1937 0650University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Diego García-Gómez
- grid.11762.330000 0001 2180 1817Department of Analytical Chemistry, University of Salamanca, Salamanca, Spain
| | - Johannes van den Anker
- grid.6612.30000 0004 1937 0642University Children’s Hospital Basel, University of Basel, Basel, Switzerland
| | - Urs Frey
- grid.6612.30000 0004 1937 0642University Children’s Hospital Basel, University of Basel, Basel, Switzerland ,grid.6612.30000 0004 1937 0642Department of Biomedical Engineering, University of Basel, Basel, Switzerland
| | - Alexandre N. Datta
- grid.6612.30000 0004 1937 0642University Children’s Hospital Basel, University of Basel, Basel, Switzerland
| | - Pablo Sinues
- grid.6612.30000 0004 1937 0642University Children’s Hospital Basel, University of Basel, Basel, Switzerland ,grid.6612.30000 0004 1937 0642Department of Biomedical Engineering, University of Basel, Basel, Switzerland
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11
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Lan X, Liang Y, Erkut EJN, Kunze M, Mulet-Sierra A, Gong T, Osswald M, Ansari K, Seikaly H, Boluk Y, Adesida AB. Bioprinting of human nasoseptal chondrocytes-laden collagen hydrogel for cartilage tissue engineering. FASEB J 2021; 35:e21191. [PMID: 33595884 DOI: 10.1096/fj.202002081r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/18/2020] [Accepted: 10/29/2020] [Indexed: 12/23/2022]
Abstract
Skin cancer patients often have tumorigenic lesions on their noses. Surgical resection of the lesions often results in nasal cartilage removal. Cartilage grafts taken from other anatomical sites are used for the surgical reconstruction of the nasal cartilage, but donor-site morbidity is a common problem. Autologous tissue-engineered nasal cartilage grafts can mitigate the problem, but commercially available scaffolds define the shape and sizes of the engineered grafts during tissue fabrication. Moreover, the engineered grafts suffer from the inhomogeneous distribution of the functional matrix of cartilage. Advances in 3D bioprinting technology offer the opportunity to engineer cartilages with customizable dimensions and anatomically shaped configurations without the inhomogeneous distribution of cartilage matrix. Here, we report the fidelity of Freeform Reversible Embedding of Suspended Hydrogel (FRESH) bioprinting as a strategy to generate customizable and homogenously distributed functional cartilage matrix engineered nasal cartilage. Using FRESH and in vitro chondrogenesis, we have fabricated tissue-engineered nasal cartilage from combining bovine type I collagen hydrogel and human nasoseptal chondrocytes. The engineered nasal cartilage constructs displayed molecular, biochemical and histological characteristics akin to native human nasal cartilage.
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Affiliation(s)
- Xiaoyi Lan
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB, Canada
| | - Yan Liang
- Department of Surgery, Divisions of Orthopedic Surgery & Surgical Research, University of Alberta, Edmonton, AB, Canada
| | - Esra J N Erkut
- Department of Surgery, Divisions of Orthopedic Surgery & Surgical Research, University of Alberta, Edmonton, AB, Canada
| | - Melanie Kunze
- Department of Surgery, Divisions of Orthopedic Surgery & Surgical Research, University of Alberta, Edmonton, AB, Canada
| | - Aillette Mulet-Sierra
- Department of Surgery, Divisions of Orthopedic Surgery & Surgical Research, University of Alberta, Edmonton, AB, Canada
| | - Tianxing Gong
- Department of Surgery, Divisions of Orthopedic Surgery & Surgical Research, University of Alberta, Edmonton, AB, Canada
| | - Martin Osswald
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Department of Surgery, Division of Otolaryngology, University of Alberta, Edmonton, AB, Canada
| | - Khalid Ansari
- Department of Surgery, Division of Otolaryngology, University of Alberta, Edmonton, AB, Canada
| | - Hadi Seikaly
- Department of Surgery, Division of Otolaryngology, University of Alberta, Edmonton, AB, Canada
| | - Yaman Boluk
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB, Canada
| | - Adetola B Adesida
- Department of Surgery, Divisions of Orthopedic Surgery & Surgical Research, University of Alberta, Edmonton, AB, Canada.,Department of Surgery, Division of Otolaryngology, University of Alberta, Edmonton, AB, Canada
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12
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Kohlbrenner D, Aregger C, Osswald M, Sievi NA, Clarenbach CF. Blood-Flow-Restricted Strength Training Combined With High-Load Strength and Endurance Training in Pulmonary Rehabilitation for COPD: A Case Report. Phys Ther 2021; 101:6134603. [PMID: 33580965 DOI: 10.1093/ptj/pzab063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/03/2020] [Accepted: 12/31/2020] [Indexed: 12/23/2022]
Abstract
OBJECTIVE The purpose of this report is to describe the case of a patient with chronic obstructive pulmonary disease (COPD) who was load compromised and being referred for outpatient pulmonary rehabilitation. Low-load blood flow restriction strength training (LL-BFRT) was applied to prepare for and increase tolerability of subsequently applied high-load strength training. METHODS (CASE DESCRIPTION) A 62-year-old woman with COPD GOLD 2 B presented with severe breathlessness. Lower limb strength was severely reduced while functional exercise capacity was preserved. The patient was severely load compromised and had high risk to be intolerant of the high training loads required to trigger the desired adaptations. LL-BFRT was applied during the first 12 training sessions and high-load strength training in the subsequent 12 training sessions of the rehabilitation program. Endurance training on a cycle ergometer was performed throughout the program. RESULTS Symptom burden in the COPD assessment test was reduced by 6 points (40%). Lower limb strength improved by 95.3 Nm (521%) and 88.4 Nm (433%) for the knee extensors and by 33.8 Nm (95%) and 56 Nm (184%) for the knee flexors, respectively. Functional exercise capacity improved by 44 m (11%) in the 6-minute walk test and 14 repetitions (108%) in the 1-minute sit-to stand test. The patient did not experience any adverse events related to the exercise training. CONCLUSION Clinically relevant changes were observed in both strength-related functional and self-reported outcomes. The achievements translated well into daily living and enabled functioning according to the patients' desires. LL-BFRT was reported to be well tolerated and implementable into an outpatient pulmonary rehabilitation program. IMPACT The description of this case encourages the systematic investigation of LL-BFRT in COPD. LL-BFRT has the potential to increase benefits as well as tolerability of strength training in pulmonary rehabilitation. Consideration of the physiological changes achieved through LL-BFRT highlights potential in targeting peripheral muscle dysfunction in COPD.
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Affiliation(s)
- Dario Kohlbrenner
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Céline Aregger
- Department of Physiotherapy and Occupational Therapy, University Hospital Zurich, Zurich, Switzerland
| | - Martin Osswald
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Noriane A Sievi
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
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Anderson-Baron M, Liang Y, Kunze M, Mulet-Sierra A, Osswald M, Ansari K, Seikaly H, Adesida AB. Suppression of Hypertrophy During in vitro Chondrogenesis of Cocultures of Human Mesenchymal Stem Cells and Nasal Chondrocytes Correlates With Lack of in vivo Calcification and Vascular Invasion. Front Bioeng Biotechnol 2021; 8:572356. [PMID: 33469528 PMCID: PMC7813892 DOI: 10.3389/fbioe.2020.572356] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 12/03/2020] [Indexed: 01/08/2023] Open
Abstract
Objective Human nasal septal chondrocytes (NC) are a promising minimally invasive derivable chondrogenic cell source for cartilage repair. However, the quality of NC-derived cartilage is variable between donors. Coculture of NC with mesenchymal stem cells (MSCs) mitigates the variability but with undesirable markers of chondrocyte hypertrophy, such as type X collagen, and the formation of unstable calcifying cartilage at ectopic sites. In contrast, monoculture NC forms non-calcifying stable cartilage. Formation of a stable NC-MSC coculture cartilage is crucial for clinical application. The aim of this study was to explore the utility of parathyroid hormone-related peptide (PTHrP) hormone to suppress chondrocyte hypertrophy in NC-MSC cocultures and form stable non-calcifying cartilage at ectopic sites. Methods Human NC and bone marrow MSCs, and cocultures of NC and MSC (1:3 ratio) were aggregated in pellet form and subjected to in vitro chondrogenesis for 3 weeks in chondrogenic medium in the presence and absence of PTHrP. Following in vitro chondrogenesis, the resulting pellets were implanted in immunodeficient athymic nude mice for 3 weeks. Results Coculture of NC and MSC resulted in synergistic cartilage matrix production. PTHrP suppressed the expression of hypertrophy marker, type X collagen (COL10A1), in a dose-dependent fashion without affecting the synergism in cartilage matrix synthesis, and in vivo calcification was eradicated with PTHrP. In contrast, cocultured control (CC) pellets without PTHrP treatment expressed COL10A1, calcified, and became vascularized in vivo.
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Affiliation(s)
- Matthew Anderson-Baron
- Division of Orthopaedic Surgery, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada.,Division of Surgical Research, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada
| | - Yan Liang
- Division of Orthopaedic Surgery, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada.,Division of Surgical Research, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada
| | - Melanie Kunze
- Division of Orthopaedic Surgery, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada.,Division of Surgical Research, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada
| | - Aillette Mulet-Sierra
- Division of Orthopaedic Surgery, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada.,Division of Surgical Research, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada
| | - Martin Osswald
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta Hospital, Edmonton, AB, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, AB, Canada
| | - Khalid Ansari
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta Hospital, Edmonton, AB, Canada
| | - Hadi Seikaly
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta Hospital, Edmonton, AB, Canada
| | - Adetola B Adesida
- Division of Orthopaedic Surgery, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada.,Division of Surgical Research, Department of Surgery, Faculty of Medicine and Dentistry, Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, University of Alberta, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta Hospital, Edmonton, AB, Canada
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14
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Mendez A, Seikaly H, Eurich D, Dzioba A, Aalto D, Osswald M, Harris JR, O'Connell DA, Lazarus C, Urken M, Likhterov I, Chai RL, Rauscher E, Buchbinder D, Okay D, Happonen RP, Kinnunen I, Irjala H, Soukka T, Laine J. Development of a Patient-Centered Functional Outcomes Questionnaire in Head and Neck Cancer. JAMA Otolaryngol Head Neck Surg 2020; 146:437-443. [PMID: 32271362 DOI: 10.1001/jamaoto.2019.4788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Incorporation of patient perspectives, or patient-reported outcomes, in functional outcome measures has been gaining prominence in the literature on reconstructive surgery. Objective To create and validate an instrument for measuring the main functional areas of concern for patients with head and neck cancer. Design, Setting, and Participants This 4-phase mixed-methods qualitative study was conducted from July 1, 2013, to June 30, 2016, in a quaternary head and neck oncology center in Edmonton, Alberta, Canada. Patients were recruited from 3 Head and Neck Research Network sites: University of Alberta (Edmonton, Canada), Mount Sinai Health Network (New York, New York), and University of Turku Hospital (Turku, Finland). The inclusion criteria included 18 years of age or older, diagnosis of squamous cell carcinoma involving the subsites of the head and neck (ie, oral cavity, oropharynx, hypopharynx, and larynx), and at least 1 year since treatment completion. Those patients who were undergoing additional active treatment or with evidence of disease recurrence were excluded. Data were analyzed from July 1, 2013, to June 30, 2016. Main Outcomes and Measures The primary outcome measures were the clinical correlation of the Edmonton-33 instrument scores with swallowing, speech, dry mouth, and chewing assessment outcomes. Results In total, 10 patients with head and neck cancer (mean age, 59.6 years; 6 men [60%]) were included in phase 1 of the study, 5 patients (mean age, 55.2 years) were included in phase 2, 10 patients were included in phase 3, and 25 patients with head and neck cancer (mean age, 62.6 years; 14 men [56%]) participated in the phase 4 validation. The Edmonton-33 instrument scores correlated strongly with the swallowing scores of the MD Anderson Dysphagia Inventory (r = 0.77; 95% CI, 0.49-1.0), the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Head and Neck 35 (EORTC QLQ-H&N35) (r = -0.73; 95% CI, -1.0 to -0.44), and the modified barium swallow test (r = -0.60; 95% CI, -0.94 to -0.25). The instrument scores were also strongly correlated with the Speech Handicap Index scores (r = -0.64; 95% CI, -0.97 to -0.31), word intelligibility scores (r = 0.61; 95% CI, 0.27-0.95), and sentence intelligibility scores (r = 0.55; 95% CI, 0.19-0.91). A moderate to strong correlation was observed between the Edmonton-33 instrument and the EORTC QLQ-H&N35 scores in the dry mouth (r = -0.54; 95% CI, -0.91 to -0.18) and chewing (r = -0.45; 95% CI, -0.84 to -0.06) domains. The factor loading values for the domains of swallowing, speech, dry mouth, and chewing were all greater than 0.3. The mean factor loading values for the items related to swallowing were 0.71 (95% CI, 0.62-0.80) and for the items related to speech were 0.76 (95% CI, 0.72-0.80). The mean factor loading values for the items related to dry mouth were 0.71 (95% CI, 0.59-0.83) and for those related to chewing were 0.77 (95% CI, 0.69-0.85). Conclusions and Relevance The Edmonton-33 appears to be a validated instrument that will allow patients with head and neck cancer to assess and report their own functional outcomes. It could serve as a single comprehensive measure for functional outcomes.
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Affiliation(s)
- Adrian Mendez
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Department of Otolaryngology-Head and Neck Surgery, Western University, London, Ontario, Canada
| | - Hadi Seikaly
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada
| | - Dean Eurich
- School of Public Health, Clinical Epidemiology, University of Alberta, Edmonton, Alberta, Canada
| | - Agnieszka Dzioba
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada
| | - Daniel Aalto
- Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, Alberta, Canada.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Martin Osswald
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada.,School of Public Health, Clinical Epidemiology, University of Alberta, Edmonton, Alberta, Canada
| | - Jeffrey R Harris
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada.,School of Public Health, Clinical Epidemiology, University of Alberta, Edmonton, Alberta, Canada
| | - Daniel A O'Connell
- Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, Alberta, Canada.,Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada.,School of Public Health, Clinical Epidemiology, University of Alberta, Edmonton, Alberta, Canada
| | - Cathy Lazarus
- Division of Head and Neck Surgery, Department of Otolaryngology-Head & Neck Surgery, Mount Sinai Beth Israel, New York, New York.,Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Mark Urken
- Division of Head and Neck Surgery, Department of Otolaryngology-Head & Neck Surgery, Mount Sinai Beth Israel, New York, New York.,Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Ilya Likhterov
- Division of Head and Neck Surgery, Department of Otolaryngology-Head & Neck Surgery, Mount Sinai Beth Israel, New York, New York.,Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Raymond L Chai
- Division of Head and Neck Surgery, Department of Otolaryngology-Head & Neck Surgery, Mount Sinai Beth Israel, New York, New York.,Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Erika Rauscher
- Thyroid, Head and Neck Cancer Foundation, New York, New York
| | - Daniel Buchbinder
- Thyroid, Head and Neck Cancer Foundation, New York, New York.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, New York
| | - Devin Okay
- Thyroid, Head and Neck Cancer Foundation, New York, New York.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, New York
| | - Risto-Pekka Happonen
- Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland.,Department of Oral and Maxillofacial Diseases, University of Turku Hospital, Turku, Finland
| | - Ilpo Kinnunen
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Heikki Irjala
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Tero Soukka
- Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland.,Department of Oral and Maxillofacial Diseases, University of Turku Hospital, Turku, Finland
| | - Juhani Laine
- Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland.,Department of Oral and Maxillofacial Diseases, University of Turku Hospital, Turku, Finland
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15
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Anderson-Baron M, Kunze M, Mulet-Sierra A, Osswald M, Ansari K, Seikaly H, Adesida AB. Nasal Chondrocyte-Derived Soluble Factors Affect Chondrogenesis of Cocultured Mesenchymal Stem Cells. Tissue Eng Part A 2020; 27:37-49. [PMID: 32122264 DOI: 10.1089/ten.tea.2019.0306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
To investigate the effect of soluble factors released from human nasal chondrocytes (NCs) on cocultured human bone marrow mesenchymal stem cells (MSCs) and NC tissue-engineered constructs. Cartilage engineered from pure NCs on a three-dimensional (3D) porous collagen scaffold was cultured indirectly in a Transwell system with cartilage engineered from a direct coculture of human bone marrow-derived MSCs and NCs on a 3D porous collagen scaffold. The soluble factors were measured in the conditioned media from the different chambers of the Transwell system. Engineered cartilage from cocultures exposed to the pure NC construct exhibited reduced chondrogenic potential relative to control constructs, shown by reduced extracellular matrix deposition and increased expression of hypertrophic markers. Analysis of the soluble factors within the conditioned media showed an increase in inflammatory cytokines in the coculture chamber exposed to the pure NC construct. Principal component analysis revealed that the majority of the data variance could be explained by proinflammatory factors and hypertrophic chondrogenesis. In conclusion, our data suggest that inflammatory cytokines derived from NCs reduce the chondrogenic potential of coculture engineered cartilage through the induction of hypertrophic chondrogenesis. Impact statement The use of engineered cartilage from cocultured nasal chondrocytes (NCs) and mesenchymal stem cells for nasal cartilage reconstruction may be problematic. Our data suggest that the soluble factors from surrounding native NCs in the cartilage to be fixed can compromise the quality of the engineered cartilage if used in reconstructive surgery.
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Affiliation(s)
- Matthew Anderson-Baron
- Division of Orthopaedic Surgery and Surgical Research, Department of Surgery, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Canada.,Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, 3-021 Li Ka Shing Centre for Health Research Innovation, Edmonton, Canada
| | - Melanie Kunze
- Division of Orthopaedic Surgery and Surgical Research, Department of Surgery, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Canada.,Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, 3-021 Li Ka Shing Centre for Health Research Innovation, Edmonton, Canada
| | - Aillette Mulet-Sierra
- Division of Orthopaedic Surgery and Surgical Research, Department of Surgery, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Canada.,Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, 3-021 Li Ka Shing Centre for Health Research Innovation, Edmonton, Canada
| | - Martin Osswald
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Alberta Hospital, Edmonton, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, Canada
| | - Khalid Ansari
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Alberta Hospital, Edmonton, Canada
| | - Hadi Seikaly
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Alberta Hospital, Edmonton, Canada
| | - Adetola B Adesida
- Division of Orthopaedic Surgery and Surgical Research, Department of Surgery, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Canada.,Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, 3-021 Li Ka Shing Centre for Health Research Innovation, Edmonton, Canada.,Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Alberta Hospital, Edmonton, Canada
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16
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Gaisl T, Rejmer P, Thiel S, Haile SR, Osswald M, Roos M, Bloch KE, Stradling JR, Kohler M. Effects of suboptimal adherence of CPAP therapy on symptoms of obstructive sleep apnoea: a randomised, double-blind, controlled trial. Eur Respir J 2019; 55:13993003.01526-2019. [DOI: 10.1183/13993003.01526-2019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 12/04/2019] [Indexed: 11/05/2022]
Abstract
IntroductionContinuous positive airway pressure (CPAP) is currently the treatment of choice for sleepiness in patients with obstructive sleep apnoea (OSA); however, adherence is often thought to be suboptimal. We investigated the effects of suboptimal CPAP usage on objective and subjective sleepiness parameters in patients with OSA.Material and methodsIn this 2-week, parallel, double-blind, randomised controlled trial we enrolled moderate-to-severe OSA patients with excessive pre-treatment daytime sleepiness (Epworth sleepiness scale (ESS) score >10 points) who had suboptimal CPAP adherence over ≥12 months (mean nightly usage time 3–4 h). Patients were allocated through minimisation to either subtherapeutic CPAP (“sham CPAP”) or continuation of CPAP (“therapeutic CPAP”). A Bayesian analysis with historical priors calculated the posterior probability of superiority.ResultsBetween May, 2016 and November, 2018, 57 patients (aged 60±8 years, 79% male, 93% Caucasian) were allocated in total, and 52 who completed the study (50% in each arm) were included in the final analysis. The unadjusted ESS score increase was 2.4 points (95% CI 0.6–4.2, p=0.01) in the sham-CPAP group when compared to continuing therapeutic CPAP. The probability of superiority of therapeutic CPAP over sham CPAP was 90.4% for ESS, 90.1% for systolic blood pressure and 80.3% for diastolic blood pressure.ConclusionsPatients with moderate-to-severe OSA and daytime sleepiness are still getting a substantial benefit from suboptimal CPAP adherence, albeit not as much as they might get if they adhered more. Whether a similar statement can be made for even lower adherence levels remains to be established in future trials.
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17
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Andrews SHJ, Kunze M, Mulet-Sierra A, Williams L, Ansari K, Osswald M, Adesida AB. Author Correction: Strategies to Mitigate Variability in Engineering Human Nasal Cartilage. Sci Rep 2019; 9:17115. [PMID: 31723212 PMCID: PMC6853904 DOI: 10.1038/s41598-019-53740-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Stephen H J Andrews
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Li Ka Shing Centre for Health Research Innovation, Edmonton, AB, Canada
| | - Melanie Kunze
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Li Ka Shing Centre for Health Research Innovation, Edmonton, AB, Canada
| | - Aillette Mulet-Sierra
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Li Ka Shing Centre for Health Research Innovation, Edmonton, AB, Canada
| | - Lynn Williams
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Li Ka Shing Centre for Health Research Innovation, Edmonton, AB, Canada
| | - Khalid Ansari
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Alberta Hospital, Edmonton, AB, Canada
| | - Martin Osswald
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Alberta Hospital, Edmonton, AB, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada
| | - Adetola B Adesida
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Li Ka Shing Centre for Health Research Innovation, Edmonton, AB, Canada.
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18
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Baumgartner P, Gaisl T, Rejmer P, Osswald M, Roeder M, Thiel S, Stämpfli SF, Clarenbach CF, Tanner FC, Kohler M. Prevalence of obstructive sleep apnoea in patients with thoracic aortic aneurysm: A prospective, parallel cohort study. Epidemiology 2019. [DOI: 10.1183/13993003.congress-2019.pa4416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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19
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Gaisl T, Baumgartner P, Rejmer P, Osswald M, Roeder M, Thiel S, Stämpfli SF, Clarenbach CF, Tanner FC, Kohler M. Prevalence of Obstructive Sleep Apnea in Patients with Thoracic Aortic Aneurysm: A Prospective, Parallel Cohort Study. Respiration 2019; 99:19-27. [PMID: 31553996 DOI: 10.1159/000502892] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 08/24/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The pathogenesis and etiology of thoracic aortic aneurysms (TAA) are largely unknown. Preliminary data from patients with aortic dissection and abdominal aneurysms suggest a causal link of obstructive sleep apnea (OSA) on aortic disease. OBJECTIVES The aim of the study was to assess the prevalence of OSA in patients with TAA compared to a matched control group. METHOD In this prospective parallel-cohort study, we 2-to-1 matched 208 patients with verified TAA (at the aortic sinus and/or ascending aorta) to 104 controls without TAA according to sex, age, height, weight, and left ventricular ejection fraction. All participants underwent an ultrasound of the thoracic aorta and a level III respiratory polygraphy. OSA was defined as apnea-hypopnea index ≥5/h. The prevalence of OSA was compared with conditional logistic regression and controlling for the matching variables. RESULTS A total of 312 patients (mean age 65 ± 11 years, 82% male, mean body mass index 27 ± 4 kg/m2) were successfully 2-to-1 matched in the final model. Prevalence of OSA was significantly higher in the TAA-group when compared to the matched control group (63 vs. 47%; odds ratio 1.87 [95% CI 1.05-3.34]; p = 0.03). When applying a higher apnea-hypopnea index threshold (≥15/h), the odds ratio increased to 3.25 (95% CI 1.65-6.42; p < 0.001). The median apnea-hypopnea index was higher in patients with TAA (9.2/h [3.3-20.0] vs. 4.5/h [2.2-11.1], p < 0.001). CONCLUSIONS Patients with TAA have a higher prevalence of OSA when compared to the general population. Since OSA is effectively treatable and might contribute to the pathogenesis of TAA, further longitudinal trials are needed to assess the association between OSA and TAA.
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Affiliation(s)
- Thomas Gaisl
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
| | | | - Protazy Rejmer
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
| | - Martin Osswald
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
| | - Maurice Roeder
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
| | - Sira Thiel
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
| | - Simon F Stämpfli
- Department of Cardiology, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | | | - Felix C Tanner
- Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Malcolm Kohler
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland,
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20
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Seikaly H, Idris S, Chuka R, Jeffery C, Dzioba A, Makki F, Logan H, O'Connell DA, Harris J, Ansari K, Biron V, Cote D, Osswald M, Nayar S, Wolfaardt J. The Alberta Reconstructive Technique: An Occlusion‐Driven and Digitally Based Jaw Reconstruction. Laryngoscope 2019; 129 Suppl 4:S1-S14. [DOI: 10.1002/lary.28064] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 04/23/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Hadi Seikaly
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
- Institute for Reconstructive Sciences in MedicineMisericordia Hospital Edmonton Alberta Canada
| | - Sherif Idris
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - Richelle Chuka
- Institute for Reconstructive Sciences in MedicineMisericordia Hospital Edmonton Alberta Canada
| | - Caroline Jeffery
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
- Institute for Reconstructive Sciences in MedicineMisericordia Hospital Edmonton Alberta Canada
| | - Agnieszka Dzioba
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - Fawaz Makki
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - Heather Logan
- Institute for Reconstructive Sciences in MedicineMisericordia Hospital Edmonton Alberta Canada
| | - Daniel A. O'Connell
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
- Institute for Reconstructive Sciences in MedicineMisericordia Hospital Edmonton Alberta Canada
| | - Jeffrey Harris
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - Kal Ansari
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - Vincent Biron
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - David Cote
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - Martin Osswald
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
- Institute for Reconstructive Sciences in MedicineMisericordia Hospital Edmonton Alberta Canada
| | - Suresh Nayar
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
- Institute for Reconstructive Sciences in MedicineMisericordia Hospital Edmonton Alberta Canada
| | - John Wolfaardt
- Division of Otolaryngology–Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
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Grosch J, Osswald M, Berghoff AS, Wick W, Winkler F. P04.69 Differential microglia - glioma cell interaction during tumor progression. Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy139.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- J Grosch
- Clinical Cooperation Unit Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
- Neurology Clinic and National Center for Tumor Diseases, University Hospital Heidelberg, Heidelberg, Germany
| | - M Osswald
- Clinical Cooperation Unit Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
- Neurology Clinic and National Center for Tumor Diseases, University Hospital Heidelberg, Heidelberg, Germany
| | - A S Berghoff
- Clinical Cooperation Unit Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
- 3. Department of Medicine I, Clinical Division of Oncology, Medical University of Vienna, Vienna, Austria
| | - W Wick
- Clinical Cooperation Unit Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
- Neurology Clinic and National Center for Tumor Diseases, University Hospital Heidelberg, Heidelberg, Germany
| | - F Winkler
- Clinical Cooperation Unit Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
- Neurology Clinic and National Center for Tumor Diseases, University Hospital Heidelberg, Heidelberg, Germany
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Papadopoulos-Nydam G, Wolfaardt J, Seikaly H, O'Connell D, Harris J, Osswald M, Nayar S, Rieger J. Comparison of speech and resonance outcomes across three methods of treatment for maxillary defects. ACTA ACUST UNITED AC 2017. [DOI: 10.26629//ijmp.2017.02] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Purpose: Treatment of maxillary defects, whether by prosthetic rehabilitation or surgical reconstruction, should aim to restore speech function and resonance balance. With the advent of technology and changing clinical practices related to maxillary defect management, speech outcomes need to be evaluated and compared in order to determine efficacy of differing approaches.
Materials and Methods: One hundred and four patients across three treatment groups for maxillary defects were included: 38 patients who were treated with maxillary obturators (OBT group), 39 patients who were treated with a standard fibular free flap reconstruction that did not involve digital planning of the reconstruction (Standard group) and 27 patients who were reconstructed using a digitally planned surgical design and simulation fibular free flap reconstruction (SDS group). Speech assessments were completed to assess word and sentence intelligibility, resonance balance and aeromechanical orifice estimation among these three groups. Assessments included the Computerized Assessment of Intelligibility of Dysarthric Speech (C-AIDS), nasalance scores via the Nasometer and palatopharyngeal orifice area via the PERCI-SARS. Results: Significant differences were found in word intelligibility between the SDS and the Standard groups (p =.035) and on nasalance scores between the SDS and the OBT groups (p=.027).
Conclusions: Patients treated with digital reconstruction (SDS) had better speech outcomes than the other two treatment groups, whose mean scores on certain speech variables were not within normal limits. Speech outcomes in the SDS group were consistently within the normal range across all measured speech variables.
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Szojka A, Lalh K, Andrews SH, Jomha NM, Osswald M, Adesida AB. Biomimetic 3D printed scaffolds for meniscus tissue engineering. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.bprint.2017.08.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dzioba A, Aalto D, Papadopoulos-Nydam G, Seikaly H, Rieger J, Wolfaardt J, Osswald M, Harris JR, O'Connell DA, Lazarus C, Urken M, Likhterov I, Chai RL, Rauscher E, Buchbinder D, Okay D, Happonen RP, Kinnunen I, Irjala H, Soukka T, Laine J. Correction to: Functional and quality of life outcomes after partial glossectomy: a multi-institutional longitudinal study of the head and neck research network. J Otolaryngol Head Neck Surg 2017; 46:59. [PMID: 28982382 PMCID: PMC5628416 DOI: 10.1186/s40463-017-0236-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Agnieszka Dzioba
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada. .,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.
| | - Daniel Aalto
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Georgina Papadopoulos-Nydam
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada
| | - Hadi Seikaly
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Jana Rieger
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada
| | - Johan Wolfaardt
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Martin Osswald
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Jeffrey R Harris
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Daniel A O'Connell
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Cathy Lazarus
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Mark Urken
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Ilya Likhterov
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Raymond L Chai
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Erika Rauscher
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Daniel Buchbinder
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, USA
| | - Devin Okay
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, USA
| | - Risto-Pekka Happonen
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Ilpo Kinnunen
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Heikki Irjala
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Tero Soukka
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Juhani Laine
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
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Dzioba A, Aalto D, Papadopoulos-Nydam G, Seikaly H, Rieger J, Wolfaardt J, Osswald M, Harris JR, O'Connell DA, Lazarus C, Urken M, Likhterov I, Chai RL, Rauscher E, Buchbinder D, Okay D, Happonen RP, Kinnunen I, Irjala H, Soukka T, Laine J. Functional and quality of life outcomes after partial glossectomy: a multi-institutional longitudinal study of the head and neck research network. J Otolaryngol Head Neck Surg 2017; 46:56. [PMID: 28870248 PMCID: PMC5583999 DOI: 10.1186/s40463-017-0234-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 08/28/2017] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND While aggressive treatment for oral cancer may optimize survival, decrements in speech and swallowing function and quality of life often result. This exploratory study investigated how patients recover their communicative function, swallowing ability, and quality of life after primary surgery [with or without adjuvant (chemo)radiation therapy] for tongue cancer over the course of the first year post-operation. METHODS Patients treated for oral cancer at three institutions (University of Alberta Hospital, Mount Sinai Beth Israel Medical Center, and Turku University Hospital) were administered patient-reported outcomes assessing speech [Speech Handicap Index (SHI)], swallowing [(M.D. Anderson Dysphagia Inventory (MDADI)] and quality of life [European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Head and Neck Module (EORTC-H&N35)]. Outcome measures were completed pre-operatively and at 1-, 6-, and 12-months post-operatively. RESULTS One hundred and seventeen patients undergoing partial glossectomy with reconstruction participated in this study. Results indicated no significant differences in swallowing function (MDADI and EORTC-H&N35 subscales) between baseline and 6 months post-surgery and no significant differences in speech function (SHI subscales) between baseline and 1 year post-surgery. Most quality of life domains (EORTC-H&N35 subscales) returned to baseline levels by 1 year post-operation, while difficulties with dry mouth and sticky saliva persisted. A clear time trend of adjuvant (chemo)radiation therapy negatively affecting dry mouth scores over time was identified in this study, while negative independent effects of chemoradiation on MDADI swallowing, and EORTC-H&N35 swallowing, eating, and opening mouth subscales were found. CONCLUSIONS Assessment time influenced patient-reported speech, swallowing, and quality of life outcomes, while treatment (by time) effects were found for only swallowing and quality of life outcomes. Results of the present study will help guide clinical care and will be useful for patient counseling on expected short and long-term functional and quality of life outcomes of surgical and adjuvant treatment for oral cavity cancer.
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Affiliation(s)
- Agnieszka Dzioba
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada. .,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.
| | - Daniel Aalto
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Georgina Papadopoulos-Nydam
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada
| | - Hadi Seikaly
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Jana Rieger
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Rehabilitation Medicine, Communication Sciences and Disorders, University of Alberta, Edmonton, AB, Canada
| | - Johan Wolfaardt
- Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Martin Osswald
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Jeffrey R Harris
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, AB, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Daniel A O'Connell
- Department of Surgery, University of Alberta Hospital, Edmonton, AB, T6G 2G4, Canada.,Division of Otolaryngology-Head and Neck Surgery, University of Alberta, Edmonton, AB, Canada
| | - Cathy Lazarus
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Mark Urken
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Ilya Likhterov
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Raymond L Chai
- Division of Head and Neck Surgery, Department of Otolaryngology, Head & Neck Surgery, Mount Sinai Beth Israel, New York, NY, USA.,Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Erika Rauscher
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA
| | - Daniel Buchbinder
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, USA
| | - Devin Okay
- Thyroid, Head And Neck Cancer (THANC) Foundation, New York, NY, USA.,Department of Oral and Maxillofacial Surgery, Mount Sinai Beth Israel, New York, USA
| | - Risto-Pekka Happonen
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Ilpo Kinnunen
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Heikki Irjala
- Department of Oto-Rhino-Laryngology, Turku University Hospital, Turku, Finland
| | - Tero Soukka
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
| | - Juhani Laine
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.,Department of Oral and Maxillofacial Surgery, University of Turku, Turku, Finland
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Osswald M, Wegmann A, Greif R, Theiler L, Pedersen TH. Facilitation of bronchoscopy teaching with easily accessible low-cost 3D-printing. Trends in Anaesthesia and Critical Care 2017. [DOI: 10.1016/j.tacc.2017.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Chuka R, Abdullah W, Rieger J, Nayar S, Seikaly H, Osswald M, Wolfaardt J. Implant Utilization and Time to Prosthetic Rehabilitation in Conventional and Advanced Fibular Free Flap Reconstruction of the Maxilla and Mandible. INT J PROSTHODONT 2017; 30:289-294. [PMID: 28453004 DOI: 10.11607/ijp.5161] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE Precisely designed jaw reconstruction rehabilitation (JRR) is important to the integrity of the jaw structure and oral functions. Advanced three-dimensional (3D) digital surgical design and simulation (SDS) techniques have the potential to reduce time to reconstructive and dental treatment completion, thereby promoting early functional oral rehabilitation. This study investigated the use of SDS in JRR procedures. MATERIALS AND METHODS A retrospective chart review was conducted on adult head and neck tumor (HNT) participants who completed JRR treatment with a fibular free flap (FFF) reconstruction. Two treatment approaches, advanced 3D SDS technique (with-SDS) and conventional, nondigitally planned technique (without-SDS), included the use of osseointegrated implants. Data were collected from adult patients treated between January 2000 and March 2014 at the Institute for Reconstructive Sciences in Medicine (iRSM). Participants were excluded if they underwent a bone-containing augmentation to the FFF reconstruction. The without-SDS group underwent a conventional, nonguided FFF reconstruction followed by nonguided implant placement. The with-SDS group underwent a guided FFF reconstruction with guided implant placement during the reconstructive surgery. The outcome measures included implant utilization (ratio of implants placed to connected) and time to prosthetic connection after FFF reconstruction. Mann-Whitney U test was used to analyze the data. RESULTS The digital SDS technique (with-SDS) group completed prosthetic treatment with a significantly higher utilization of implants as well as a significantly shorter time to prosthetic delivery. CONCLUSION SDS allows an interdisciplinary treatment team to work together to create a virtual plan that leads to greater efficiency in patient treatment time and utilization of dental implants.
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Pedersen TH, Gysin J, Wegmann A, Osswald M, Ott SR, Theiler L, Greif R. A randomised, controlled trial evaluating a low cost, 3D-printed bronchoscopy simulator. Anaesthesia 2017; 72:1005-1009. [DOI: 10.1111/anae.13951] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/01/2017] [Indexed: 11/30/2022]
Affiliation(s)
- T. H. Pedersen
- Inselspital; Bern University Hospital; University of Bern; Switzerland
| | - J. Gysin
- Inselspital; Bern University Hospital; University of Bern; Switzerland
| | - A. Wegmann
- Inselspital; Bern University Hospital; University of Bern; Switzerland
| | - M. Osswald
- Inselspital; Bern University Hospital; University of Bern; Switzerland
| | - S. R. Ott
- Inselspital; Bern University Hospital; University of Bern; Switzerland
| | - L. Theiler
- Inselspital; Bern University Hospital; University of Bern; Switzerland
| | - R. Greif
- Inselspital; Bern University Hospital; University of Bern; Switzerland
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Liao Y, Berghoff AS, Osswald M, Ilhan-Mutlu A, Gil B, Thome C, Ratliff M, Steeg P, Wick W, Winkler F. OS7.1 Identification and characterization of brain metastasis initiating cells. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Karimian Jazi K, Ratliff M, Solecki G, Osswald M, Jung E, Berghoff A, Grosch J, Bendszus M, Wick W, Winkler F. P08.54 Revisiting the,,go or grow” hypothesis in glioma in vivo. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Solecki G, Osswald M, Glock M, Weber D, Gömmel M, Müller H, Krieter O, Wick W, Winkler F. OS3.1 Differential impact of Ang-2, VEGF-A and dual Ang-2/VEGF-A blocking on the efficacy of radio- and chemotherapy in a glioblastoma model. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Feinauer MJ, Berghoff AS, Solecki G, Grosch JK, Bauer AT, Arteta JR, Osswald M, Schneider SW, Wick W, Winkler F. OS7.3 Impact of platelets and coagulation factors on the early steps of the brain metastatic cascade. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Weil S, Osswald M, Solecki G, Blaes J, Gömmel M, Wick W, Winkler F. OS1.6 Tumor Microtubes contribute to resistance against surgical lesions, and chemotherapy in malignant glioma. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Osswald M. THEMATIC ABSTRACT REVIEW: The Issue with Tissue: How to Treat Peri-implantitis. Int J Oral Maxillofac Implants 2016. [DOI: 10.11607/jomi.2016.5.tar] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Osswald M. Nanotechnology and Oral Implants: An Update. Int J Oral Maxillofac Implants 2015; 30:995-997. [PMID: 26649370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
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Stanford CM, Estafanous EW, Oates TW, Osswald M, Huynh-Ba G, Ellingsen JE, Chvartszaid D. Dental implants and a rising demand to immediately improve patients' oral function and esthetics: is research conclusive? Int J Oral Maxillofac Implants 2014; 29:1254-1258. [PMID: 25562075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
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Osswald M. Dental implants are contraindicated in... Int J Oral Maxillofac Implants 2014; 29:1024-1027. [PMID: 25353037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
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Weiler M, Kessler T, Sahm F, Blaes J, Osswald M, Milford D, Urban S, Ruiz de Almodovar C, Heiland S, Wick W. O6.10 * GLIOMA CELL VEGFR-2 EXPRESSION IMPAIRS CHEMOTHERAPEUTIC AND ANTIANGIOGENIC TREATMENTS IN PTEN-DEFICIENT GLIOBLASTOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Estafanous EW, Osswald M, Oates TW, Ellingsen JE, Huynh-Ba G, Chvartszaid D. "All-on-four": where are we now? Int J Oral Maxillofac Implants 2014; 29:285-288. [PMID: 24812672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
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Bassi F, Carr AB, Chang TL, Estafanous EW, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Salinas TJ, Stanford CM, Wolfaardt J. Psychologic outcomes in implant prosthodontics. INT J PROSTHODONT 2014; 26:429-34. [PMID: 23998140 DOI: 10.11607/ijp.3403] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Consensus regarding outcomes of the treatment of tooth loss, especially the psychologic outcomes, is needed to guide discovery of best practices and enable a better understanding of patient management for this chronic condition. This paper presents the findings of the ORONet Psychological Working Group for prosthodontics and aims to identify psychologic outcomes with properties deemed critical to meet clinical trial and clinical practice needs for the future. References obtained using a PubMed/Medline search were reviewed for clinical outcomes measures of interest. Clinical outcomes measures were judged relative to the criteria of truth, discrimination, and feasibility. Of the psychologic outcome measures identified in this systematic review, only the OHIP-14 was thought to be suitable for use in general practice and multi-institutional outcome registries and clinical trials. Development of clinically useful psychologic outcomes for future use could benefit from developmental methods and tools outlined in the patient-related outcomes field of clinical care.
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Bassi F, Carr AB, Chang TL, Estafanous EW, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Salinas TJ, Stanford CM, Wolfaardt J. Economic outcomes in prosthodontics. INT J PROSTHODONT 2014; 26:465-9. [PMID: 23998145 DOI: 10.11607/ijp.3405] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE A systematic literature review was conducted to identify the types of economic measures currently used in implant prosthodontics and determine the degree to which cost of care is considered in the context of any positive outcome of the care provided. MATERIALS AND METHODS A literature search was conducted using the following set of terms plus some additional hand searching: "dental implants" (Mesh) AND ("cost") OR "maintenance" OR "healthcare policy" OR "access to care" OR "third party" OR "economic") AND (("1995/01/01"[PDat]:'2009/12/31"[PDat]) AND (Humans[Mesh]) AND (English[lang])). RESULTS After a review of the 466 titles and abstracts identified by the search, 18 articles were accepted for further consideration, as some attempt at economic outcome measures was made. An additional four articles were identified by hand searching. The 22 accepted articles were grouped into four basic categories: (1) measure of costs of treatment (direct, indirect, and maintenance costs), (2) cost-effectiveness mathematical modeling applied to simulate the lifetime paths and cost of treatment, (3) cost-effectiveness analysis/cost minimization, and (4) willingness-to-pay, willingness-to-accept. Attempts at determining the costs of treatment varied widely. When the OMERACT filters were applied to the various measures it was felt that discrimination and/or feasibility was a problem for most of the current economic outcome measures. CONCLUSIONS Measures of cost-benefit, cost-effectiveness, and cost-utility are currently the gold standard; however, feasibility of such analyses is an issue. Collaboration with health economists to guide future research is highly recommended.
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Bassi F, Carr AB, Chang TL, Estafanous EW, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Salinas TJ, Stanford CM, Wolfaardt J. Functional outcomes for clinical evaluation of implant restorations. INT J PROSTHODONT 2014; 26:411-8. [PMID: 23998137 DOI: 10.11607/ijp.3404] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The functional outcomes related to treating patients afflicted with tooth loss are an important hallmark in substantiating prosthodontic intervention. The Oral Rehabilitation Outcomes Network (ORONet) conducted two international workshops to develop a core set of outcome measures, including a functional domain. The process followed the general format used in the Outcome Measures in Rheumatology (OMERACT) workshops to develop consensus for clinical outcome measures in arthritis research, which included: developing a comprehensive list of potential outcomes in the literature; submitting them to a filter for validity, clinical discrimination, and feasibility; and ranking those measures meeting all the filter criteria for relative value. The search was conducted to include functional assessments of speech, swallowing, mastication, nutrition, sensation, and motor function as they relate to dental implant therapies. This literature review surveyed 173 papers that produced some result of these descriptors in the functional domain. Of these, 67 papers reported on functional assessments and further defined objective and subjective outcomes. Many of these results were patient-perceived improvements in function, while others were objective assessments based on established methodologies and instruments. Objective evaluations of masticatory function and speech may meet criteria for validity and discriminability for selected interventions, but are generally not feasible for routine use in clinical care settings. The current recommendation is to employ a well-validated survey instrument that covers mastication and speech, such as the Oral Health Impact Profile (OHIP-14, short form), recognizing that patient perceptions of function may differ from objective ability.
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Bassi F, Carr AB, Chang TL, Estafanous E, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Estafanous E, Salinas TJ, Stanford CM, Wolfaardt J. Clinical outcomes measures for assessment of longevity in the dental implant literature: ORONet approach. INT J PROSTHODONT 2013; 26:323-30. [PMID: 23837161 DOI: 10.11607/ijp.3402] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The Oral Rehabilitation Outcomes Network (ORONet) Longevity Working Group undertook a search of the literature from 1995 to 2009 on randomized controlled trials related to longevity of osseointegrated implants. Outcomes measures used in these studies were identified and subjected to the OMERACT component criteria of truth, validity, and feasibility. Through this process, it was a challenge to identify clinical outcomes measures that fully met the criteria. An attenuated version of the component criteria was applied, and clinical measures were identified for implant outcomes, prosthetic outcomes, and indices. A recommendation on standardized reporting periods was also presented for future consideration. The endpoint of the evaluation process is to develop consensus on clinical outcomes measures that can be applied across broad populations for osseointegrated implant care. The present ORONet initiative represents a beginning toward continual improvement and consensus development for clinical outcomes measures for osseointegrated implants.
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Affiliation(s)
- Francesco Bassi
- Department of Biomedical Science and Human Oncology, Prosthodontic Section University of Turin, Torino, Italy
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Ellingsen JE, Stanford C, Oates TW, Osswald M, Huynh-Ba G, Estafanous EW. Short implants--a valuable alternative in patients with reduced bone height? Int J Oral Maxillofac Implants 2013; 28:950-953. [PMID: 24040656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
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Bassi F, Carr AB, Chang TL, Estafanous E, Garrett NR, Happonen RP, Koka S, Laine J, Osswald M, Reintsema H, Rieger J, Roumanas E, Salinas TJ, Stanford CM, Wolfaardt J. Oral Rehabilitation Outcomes Network—ORONet. INT J PROSTHODONT 2013; 26:319-22. [DOI: 10.11607/ijp.3400] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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46
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Sergiev P, Leonov A, Dokudovskaya S, Shpanchenko O, Dontsova O, Bogdanov A, Rinke-Appel J, Mueller F, Osswald M, von Knoblauch K, Brimacombe R. Correlating the X-ray structures for halo- and thermophilic ribosomal subunits with biochemical data for the Escherichia coli ribosome. Cold Spring Harb Symp Quant Biol 2003; 66:87-100. [PMID: 12762011 DOI: 10.1101/sqb.2001.66.87] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- P Sergiev
- Department of Chemistry of Natural Compounds and Belozersky Institute, Moscow State University, Moscow 119899, Russia
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Mitchell P, Osswald M, Brimacombe R. Identification of intermolecular RNA cross-links at the subunit interface of the Escherichia coli ribosome. Biochemistry 2002; 31:3004-11. [PMID: 1372517 DOI: 10.1021/bi00126a023] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
32P-Labeled 70S ribosomes and polysomes were isolated from cultures of Escherichia coli and treated with the cross-linking reagent bis(2-chloroethyl)methylamine. Intermolecular 16S-23S RNA cross-linked complexes were separated from other products of the cross-linking reactions by a two-step sucrose density gradient centrifugation procedure and subjected to oligodeoxynucleotide-directed partial nuclease digestions with RNase H. Cross-linked RNA fragments released by such directed digests were resolved by two-dimensional gel electrophoresis and analyzed using classical oligonucleotide fingerprinting techniques. Two distinct intermolecular cross-links between the 16S and 23S RNA could be localized in this manner, involving positions 1408-1411 and 1518-1520 in the 16S RNA sequence and positions 1912-1920 in the 23S RNA sequence. These data provide the first direct topographical links between the RNA of the 30S and 50S subunits in the functional ribosome and, together with previous topographical data concerning the three-dimensional folding of the rRNA, demonstrate that there is a tight cluster at the ribosomal interface both of sites implicated in ribosomal function and of posttranscriptionally modified nucleotides in the rRNA.
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MESH Headings
- Base Sequence
- Centrifugation, Density Gradient
- Computer Simulation
- Cross-Linking Reagents
- Electrophoresis, Gel, Two-Dimensional
- Escherichia coli/genetics
- Mechlorethamine/pharmacology
- Models, Molecular
- Molecular Sequence Data
- Nucleic Acid Conformation
- Oligonucleotides/chemistry
- RNA, Bacterial/chemistry
- RNA, Ribosomal, 16S/chemistry
- RNA, Ribosomal, 16S/isolation & purification
- RNA, Ribosomal, 23S/chemistry
- RNA, Ribosomal, 23S/isolation & purification
- Ribonuclease H/metabolism
- Ribosomes/chemistry
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Affiliation(s)
- P Mitchell
- Max-Planck-Institut für Molekulare Genetik, Abteilung Wittmann, Federal Republic of Germany
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Rasnake MS, Glanton C, Ornstein D, Osswald M, Garrison M. Hypercalcemia mediated by parathyroid hormone-related protein as an early manifestation of pancreatic adenocarcinoma metastasis: a case report. Am J Clin Oncol 2001; 24:416-7. [PMID: 11474277 DOI: 10.1097/00000421-200108000-00024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Humoral hypercalcemia of malignancy (HHM) is a paraneoplastic syndrome rarely associated with pancreatic adenocarcinoma. Parathyroid hormone-related peptide (PTHrP) is the central mediator of this condition. In our patient, hypercalcemia associated with elevated PTHrP was the initial manifestation of metastatic pancreatic adenocarcinoma. Successful palliation of HHM with bisphosphonates and loop diuretics has been previously reported and was effective in our patient. We report the first case of pancreatic adenocarcinoma metastasis after successful resection to present with hypercalcemia.
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Affiliation(s)
- M S Rasnake
- Department of Internal Medicine, Wilford Hall Medical Center, Lackland AFB, Texas 78236-5157, USA.
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Matadeen R, Sergiev P, Leonov A, Pape T, van der Sluis E, Mueller F, Osswald M, von Knoblauch K, Brimacombe R, Bogdanov A, van Heel M, Dontsova O. Direct localization by cryo-electron microscopy of secondary structural elements in Escherichia coli 23 S rRNA which differ from the corresponding regions in Haloarcula marismortui. J Mol Biol 2001; 307:1341-9. [PMID: 11292346 DOI: 10.1006/jmbi.2001.4547] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Insertions were introduced by a two-step mutagenesis procedure into each of five double-helical regions of Escherichia coli 23 S rRNA, so as to extend the helix concerned by 17 bp. The helices chosen were at sites within the 23 S molecule (h9, h25, h45, h63 and h98) where significant length variations between different species are known to occur. At each of these positions, with the exception of h45, there are also significant differences between the 23 S rRNAs of E. coli and Haloarcula marismortui. Plasmids carrying the insertions were introduced into an E. coli strain lacking all seven rrn operons. In four of the five cases the cells were viable and 50 S subunits could be isolated; only the insertion in h63 was lethal. The modified subunits were examined by cryo-electron microscopy (cryo-EM), with a view to locating extra electron density corresponding to the insertion elements. The results were compared both with the recently determined atomic structure of H. marismortui 23 S rRNA in the 50 S subunit, and with previous 23 S rRNA modelling studies based on cryo-EM reconstructions of E. coli ribosomes. The insertion element in h45 was located by cryo-EM at a position corresponding precisely to that of the equivalent helix in H. marismortui. The insertion in h98 (which is entirely absent in H. marismortui) was similarly located at a position corresponding precisely to that predicted from the E. coli modelling studies. In the region of h9, the difference between the E. coli and H. marismortui secondary structures is ambiguous, and the extra electron density corresponding to the insertion was seen at a location intermediate between the position of the nearest helix in the atomic structure and that in the modelled structure. In the case of h25 (which is about 50 nucleotides longer in H. marismortui), no clear extra cryo-EM density corresponding to the insertion could be observed.
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MESH Headings
- Base Sequence
- Cell Division
- Computer Graphics
- Cryoelectron Microscopy
- Escherichia coli/chemistry
- Escherichia coli/genetics
- Escherichia coli/growth & development
- Genes, Lethal/genetics
- Haloarcula marismortui/chemistry
- Haloarcula marismortui/genetics
- Haloarcula marismortui/growth & development
- Models, Molecular
- Molecular Sequence Data
- Mutagenesis/genetics
- Nucleic Acid Conformation
- Operon/genetics
- Protein Conformation
- Protein Subunits
- RNA, Bacterial/chemistry
- RNA, Bacterial/genetics
- RNA, Bacterial/metabolism
- RNA, Bacterial/ultrastructure
- RNA, Ribosomal, 23S/chemistry
- RNA, Ribosomal, 23S/genetics
- RNA, Ribosomal, 23S/metabolism
- RNA, Ribosomal, 23S/ultrastructure
- Ribosomes/chemistry
- Ribosomes/genetics
- Ribosomes/metabolism
- Ribosomes/ultrastructure
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Affiliation(s)
- R Matadeen
- Medicine and Technology Department of Biochemistry, Imperial College of Science, London, SW7 2AY, UK
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Voisard R, Fischer R, Osswald M, Voglic S, Baur R, Susa M, Koenig W, Hombach V. Aspirin (5 mmol/L) inhibits leukocyte attack and triggered reactive cell proliferation in a 3D human coronary in vitro model. Circulation 2001; 103:1688-94. [PMID: 11273998 DOI: 10.1161/01.cir.103.12.1688] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND Leukocyte attack (LA) and the triggered reactive proliferation of smooth muscle cells (SMCs) are key events for the development of early atherosclerosis and restenosis. In the present study, we used a 3D human coronary in vitro model of LA (3DLA model) to examine the effect of high-dose aspirin on the adhesion and chemotaxis of leukocytes and the reactive proliferative response of SMCs. METHODS AND RESULTS For dose-finding, the effect of aspirin (1, 2, 5, and 10 mmol/L) on the tumor necrosis factor-alpha-induced upregulation of intercellular adhesion molecule-1 was analyzed in monocultures of human coronary endothelial cells (HCAEC) and the SMCs of the human coronary media (HCMSMC). In cytoflow and Northern blot experiments, the expression of intercellular adhesion molecule-1 was slightly reduced after incubation with 5 mmol/L aspirin, and strong inhibition was found after incubation with 10 mmol/L. In 3DLA models, HCAECs and HCMSMCs were cultured on both sides of a porous filter. For LA, human monocytes or CD4(+) lymphocytes were seeded on the HCAEC side of the 3DLA unit. A dose of 5 mmol/L aspirin inhibited the adherence of monocytes or CD4(+) lymphocytes by 50% (P:<0.01) and the chemotaxis of monocytes by 90% (P:<0.01). The reactive proliferative response of cocultured HCMSMCs after LA, as measured by the uptake of bromodeoxyuridine, was significantly reduced by 83% after selective monocyte attack (P:<0.001) and by 42% after selective CD4(+) lymphocyte attack (P:<0.05). CONCLUSIONS A local concentration of 5 mmol/L aspirin should be accepted as the lowest rational concentration for the beneficial in vitro effects of high-dose aspirin to be reproduced in clinical studies.
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MESH Headings
- Aspirin/pharmacology
- Blotting, Northern
- Bromodeoxyuridine
- CD4-Positive T-Lymphocytes/cytology
- CD4-Positive T-Lymphocytes/drug effects
- Cell Adhesion/drug effects
- Cell Division/drug effects
- Cells, Cultured
- Chemotaxis/drug effects
- Coronary Artery Disease/immunology
- Dose-Response Relationship, Drug
- Endothelium, Vascular/cytology
- Endothelium, Vascular/drug effects
- Flow Cytometry
- Humans
- In Vitro Techniques
- Intercellular Adhesion Molecule-1/biosynthesis
- Intercellular Adhesion Molecule-1/genetics
- Leukocytes/cytology
- Leukocytes/drug effects
- Monocytes/cytology
- Monocytes/drug effects
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/immunology
- RNA, Messenger/metabolism
- Tumor Necrosis Factor-alpha/pharmacology
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Affiliation(s)
- R Voisard
- Department of Internal Medicine II, Division of Cardiology, University of Ulm, Germany.
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