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4. In Vitro and In Vivo Biocompatibility of Bacterial Cellulose.

Author

Girard, Vincent‐Daniel, Chaussé, Jérémie, Borduas, Martin, Dubuc, Émile, Iorio‐Morin, Christian, Brisebois, Simon, and Vermette, Patrick

Subjects
BACTERIAL cell walls, CYTOTOXINS, ANIMAL experimentation, ENDOTOXINS, CELLULOSE
Abstract

Bacterial cellulose is a unique biomaterial produced by various species of bacteria that offers a range of potential applications in the biomedical field. To provide a cost‐effective alternative to soft‐tissue implants used in cavity infills, remodeling, and subdermal wound healing, in vitro cytotoxicity and in vivo biocompatibility of native bacterial cellulose were investigated. Cytotoxicity was assessed using a metabolic assay on Swiss 3T3 fibroblasts and INS‐1832/13 rat insulinoma. Results showed no cytotoxicity, whether the cells were seeded over or under the bacterial cellulose scaffolds. Biocompatibility was performed on Sprague–Dawley rats (males and females, 8 weeks old) by implanting bacterial cellulose membranes subcutaneously for 1 or 12 weeks. The explanted scaffolds were then sliced and stained with hematoxylin and eosin for histological characterization. The first series of results revealed acute and chronic inflammation persisting over 12 weeks. Examination of the explants indicated a high number of granulocytes within the periphery of the bacterial cellulose, suggesting the presence of endotoxins within the membrane, confirmed by a Limulus amebocyte lysate test. This discovery motivated the development of non‐pyrogenic bacterial cellulose scaffolds. Following this, a second series of animal experiments was done, in which materials were implanted for 1 or 2 weeks. The results revealed mild inflammation 1 week after implantation, which then diminished to minimal inflammation after 2 weeks. Altogether, this study highlights that unmodified, purified native bacterial cellulose membranes may be used as a cost‐effective biomedical device provided that proper endotoxin clearance is achieved. [ABSTRACT FROM AUTHOR]

Published
2024
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7. Contributors

Author

Abraham, Devaprabu, primary, Abraham, Nikita R., additional, Agarwal, Amit, additional, Ahadi, Mahsa S., additional, Alameer, Ehab, additional, Alobuia, Wilson, additional, Alon, Eran E., additional, Angkoon, Anuwong, additional, Al-Qurayshi, Zaid, additional, Angell, Trevor E., additional, Angelos, Peter, additional, Baek, Jung Hwan, additional, Baloch, Zubair W., additional, Barczyński, Marcin, additional, Bauer, Andrew J., additional, Bellantone, Rocco, additional, Berdelou, Amandine, additional, Bergenfeltz, Anders, additional, Bernet, Victor J., additional, Bible, Keith C., additional, Bilezikian, John Paul, additional, Bonilla-Velez, Juliana, additional, Boucai, Laura, additional, Brent, Gregory A., additional, Breuskin, Ingrid, additional, Brierley, James Duncan, additional, Brisebois, Simon, additional, Brooks, Jennifer, additional, Brumund, Kevin T., additional, Bura, Mijenko, additional, Alvarez, Jean Gabriel Bustamante, additional, Carneiro-Pla, Denise, additional, Cernea, Claudio R., additional, Chang, Rita Yuk-kwan, additional, Chen, Amy, additional, Chiang, Feng-Yu, additional, Chintakuntlawar, Ashish V., additional, Cho, Nancy L., additional, Chung, Woong Youn, additional, Cibas, Edmund S., additional, Dacey, Carolyn, additional, Davies, Louise, additional, De Crea, Carmela, additional, Delbridge, Leigh, additional, Diercks, Gillian, additional, Doherty, Gerard M., additional, Dralle, Henning, additional, Duh, Quan-Yang, additional, Dunlap, Quinn Alexander, additional, Durante, Cosmio, additional, Eltelety, Ahmad Mohamed, additional, Evans, Douglas B., additional, Fadda, Guido, additional, Faquin, William C., additional, Felger, Erin, additional, Ferris, Robert L., additional, Filetti, Sebastiano, additional, Freeman, Jeremy L., additional, Fundakowski, Christopher, additional, Ganly, Ian, additional, Gigliotti, Benjamin Joseph, additional, Gill, Anthony J., additional, Giordano, Thomas J., additional, Giuliani, Meredith E., additional, Gooi, Zhen, additional, Gopal, Raj K., additional, Guerlain, Joanne, additional, Hadoux, Julien, additional, Hales, Nathan, additional, Hartl, Dana, additional, Haugen, Bryan R., additional, Haymart, Megan R., additional, Inabnet, William B., additional, Irish, Jonathan, additional, Iwata, Ayaka, additional, Kamani, Dipti, additional, Kandil, Emad, additional, Kaplan, Edwin L., additional, Kazahaya, Ken, additional, Kebebew, Electron, additional, Kim, Matthew I., additional, Kovatch, Kevin J., additional, Lang, Brian H.H., additional, Leboulleux, Sophie, additional, Leung, Angela M., additional, Levine, Robert A., additional, Liddy, Whitney, additional, LiVolsi, Virginia A., additional, Lombardi, Celestino Pio, additional, Lubitz, Carrie C., additional, Machens, Andreas, additional, Maghami, Ellie, additional, Mandel, Susan J., additional, Maniakas, Anastasios, additional, Mathisen, Douglas J., additional, Mathur, Aarti, additional, Merati, Albert, additional, Milas, Mira, additional, Miyauchi, Akira, additional, Monteiro, Eric, additional, Netterville, James L., additional, Nikiforov, Yuri E., additional, Orloff, Lisa A., additional, Pandian, T.K., additional, Parangi, Sareh, additional, Parikh, Sanjay, additional, Park, Auh Whan, additional, Pearce, Elizabeth N., additional, Pellitteri, Phillip K., additional, Pennestrì, Francesco, additional, Pradhan, Roma, additional, Prichard, Ruth, additional, Raffaelli, Marco, additional, Randolph, Gregory W., additional, Rastatter, Jeff, additional, Reid, Lisa M., additional, Richer, Sara L., additional, Richmon, Jeremy D., additional, Ringel, Matthew D., additional, Roman, Benjamin R., additional, Romanchishen, Anatoly F., additional, Ross, Douglas S., additional, Russell, Jonathon O., additional, Russell, Marika D., additional, Ryder, Mabel, additional, Sabra, Mona M., additional, Sachdeva, Uma M., additional, Sadow, Peter M., additional, Scharpf, Joseph, additional, Schlumberger, Martin, additional, Schneider, Rick, additional, Scott-Coombes, David, additional, Sewell, Andrew B., additional, Shah, Jatin, additional, Shah, Manisha H., additional, Shindo, Maisie, additional, Shonka, David, additional, Silverberg, Shonni Joy, additional, Sims, John Randall, additional, Sinclair, Catherine F., additional, Singer, Michael C., additional, Siperstein, Allan E., additional, Sipos, Jennifer A., additional, Slough, Cristian Martin, additional, Sosa, Julie A., additional, Soylu, Selen, additional, Stack, Brendan C., additional, Stathatos, Nikolaos, additional, Stechman, Michael James, additional, Stephen, Antonia E., additional, Steward, David L., additional, Suh, Hyun, additional, Sywak, Mark, additional, Tang, Alice, additional, Terris, David J., additional, Thompson, Geoffrey Bruce, additional, Tolley, Neil, additional, Tominaga, Yoshihiro, additional, Triponez, Frédéric, additional, Tsang, Richard W., additional, Tuttle, R. Michael, additional, Urken, Mark L., additional, Vabalayte, Kristina V., additional, Vahabzadeh-Hagh, Andrew M., additional, Volpi, Erivelto Martinho, additional, Wang, Tracy S., additional, Wu, Che-Wei, additional, Wirth, Lori J., additional, Witterick, Ian, additional, Wong, Richard J., additional, Woodson, Gayle E., additional, Wright, Cameron D., additional, Zafereo, Mark E., additional, and Zubiaur, Fermin M., additional

Published
2021
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12. Bilateral Focused Ultrasound Thalamotomy for Essential Tremor ( BEST‐FUS Phase 2 Trial)

Author

Iorio‐Morin, Christian, primary, Yamamoto, Kazuaki, additional, Sarica, Can, additional, Zemmar, Ajmal, additional, Levesque, Mathieu, additional, Brisebois, Simon, additional, Germann, Jurgen, additional, Loh, Aaron, additional, Boutet, Alexandre, additional, Elias, Gavin J.B., additional, Azevedo, Paula, additional, Adam, Elizabeth, additional, Patel, Urmi, additional, Lenis, Martha, additional, Kalia, Suneil K., additional, Hodaie, Mojgan, additional, Fasano, Alfonso, additional, and Lozano, Andres M., additional

Published
2021
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13. Proton pump inhibitors: Review of reported risks and controversies

Author

Brisebois, Simon, Merati, Albert, and Giliberto, John Paul

Subjects
laryngopharyngeal reflux, gastroesophageal reflux disease, Review, Laryngology, Speech and Language Science, Proton Pump Inhibitors risks
Abstract

Proton pump inhibitors (PPIs) are among the most prescribed classes of drugs in this day and age. These may be beneficial to treat many gastrointestinal conditions, such as gastroesophageal reflux or Barrett's esophagus as well as laryngopharyngeal reflux. However, many reports have emerged in the literature exposing the potential association of PPIs with various risks and complications such as bone fracture, infection, myocardial infarction, renal disease, and dementia. This review highlights many of these potential adverse side effects by exploring relevant publications and addressing the controversies associated with those findings. The diligent otolaryngologist should be aware of the current state of the literature and the risks associated with prescribing PPIs to insure proper counseling of their patients. Level of Evidence 5

Published
2018

14. Letter: The Risk of COVID-19 Infection During Neurosurgical Procedures: A Review of Severe Acute Respiratory Distress Syndrome Coronavirus 2 (SARS-CoV-2) Modes of Transmission and Proposed Neurosurgery-Specific Measures for Mitigation

Author

Iorio-Morin, Christian, primary, Hodaie, Mojgan, additional, Sarica, Can, additional, Dea, Nicolas, additional, Westwick, Harrison J, additional, Christie, Sean D, additional, McDonald, Patrick J, additional, Labidi, Moujahed, additional, Farmer, Jean-Pierre, additional, Brisebois, Simon, additional, D’Aragon, Frédérick, additional, Carignan, Alex, additional, and Fortin, David, additional

Published
2020
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16. The minimal clinically important difference of the dyspnea index in laryngotracheal stenosis.

Author

Gray, Alan J., Huston, Molly, Didericksen, Devin, Meyer, Tanya K., Merati, Albert, and Brisebois, Simon

Abstract

Objective: The Dyspnea Index (DI) is a validated patient-reported outcome (PRO) instrument that has been used in the management of laryngotracheal stenosis (LTS). The minimal clinically important difference (MCID) is an established concept to help determine the change in a PRO instrument that reflects meaningful change for the patient. It is not known what change in the DI is of clinical significance in airway surgery. This study aims to determine the MCID for the DI in patients undergoing surgical treatment for LTS.Methods: This is a prospective cohort study in which 26 patients with LTS completed the DI (score range 0 to 40) before and 6 to 8 weeks postoperatively, in addition to a Global Ratings Change Questionnaire (GRCQ), scored from -7 to +7, at the postoperative interval. A hypothesis test was carried out to test the association between GRCQ and change in DI. The MCID for change in DI was determined using anchor-based analysis.Results: Overall mean change in DI was -11, and mean change in GRCQ was +5. Change in DI scores were significantly different among the improvement and no improvement groups (P value <0.002). Area under the receiver operating curve was 0.92, demonstrating high discriminatory ability of the change in DI score. A change of -4 was determined to be the threshold that discriminated between significant improvement and no improvement.Conclusion: A decrease of 4 in the DI can be considered as the MCID for patients with LTS after surgical treatment.Level Of Evidence: 2b Laryngoscope, 130:1775-1779, 2020. [ABSTRACT FROM AUTHOR]

Published
2020
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19. Suture-ligature technique for the closure of tracheocutaneous fistula in adults.

Author

Hauff, Samantha J., Brisebois, Simon, Moss, William, Merati, Albert L., and Weissbrod, Philip A.

Abstract

The article discusses the case study of an adult patient with tracheocutaneous fistula (TCF). TCF is reportedly not life threatening and is a common long-term tracheostomy complication, however it negatively affects patients' quality of life. The surgical team reportedly used the suture-ligature technique to close TCF which has been proven effective in children.

Published
2019
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22. Effets d'une laryngite de reflux sur le contrôle de la coordination entre la déglutition non nutritive et la respiration chez l'agneau nouveau-né

Author

Brisebois, Simon, Praud, Jean-Paul, Brisebois, Simon, and Praud, Jean-Paul

Abstract

Le syndrome de mort subite du nourrisson (SMSN), les malaises graves du nourrisson (ALTE) et les apnées du prématuré sont des pathologies sévères et/ou fréquentes chez le nouveau-né et peuvent être à l'origine d'expériences dramatiques pour les parents. Les observations cliniques et les données actuelles de la littérature nous portent à croire que la laryngite de reflux pourrait être impliquée via son interaction avec la fonction laryngée, incluant les chémoréflexes laryngés, la déglutition et la coordination respiration-déglutition. Notre objectif était d'étudier l'impact d'une laryngite de reflux induite expérimentalement sur la fréquence des déglutitions non nutritives (DNN) et sur la coordination respiration-déglutition dans notre modèle unique d'agneau nouveau-né. Douze agneaux nouveau-nés à terme ont été randomisés dans un groupe contrôle (n=6) et un groupe laryngite (n=6). Après une instrumentation chirurgicale, 2mL d'une solution de pepsine-HCl à pH 2,0 (laryngite) ou de salin 0,9% (contrôle) étaient instillés au niveau de la muqueuse laryngée trois fois par jour pour huit jours. Au dernier jour, une polysomnographie de quatre heures était faite pour enregistrer les DNN et les paramètres cardio-respiratoires. Deux techniques d'analyse complémentaires (qualitative et quantitative) de la coordination respiration-déglutition ont été utilisées sur les données obtenues. Tous les larynx ont été recueillis pour étude histologique et l'application d'un score d'inflammation. Une laryngite de reflux significative d'intensité légère à modérée a été induite dans le groupe laryngite (p= 0,02). Une diminution significative des épisodes de bouffées de DNN en sommeil agité (REM) (p=0,03), ainsi qu'une diminution significative des fréquences cardiaque et respiratoire de base (p < 0,0001) ont été observées dans le groupe laryngite. Aucune altération de la fréquence des DNN isolées (p = 0,9) ou de la coordination respiraton-déglutition (0,3 < p < 1,0) n'a été retrouvée. Nos ré

Published
2012

24. Effects of reflux laryngitis on non-nutritive swallowing in newborn lambs

Author

Brisebois, Simon, Samson, Nathalie, Fortier, Pierre-Hugues, Carreau, Anne-Marie, Praud, Jean-Paul, Brisebois, Simon, Samson, Nathalie, Fortier, Pierre-Hugues, Carreau, Anne-Marie, and Praud, Jean-Paul

Abstract

Reflux laryngitis in infants may be involved not only in laryngeal disorders, but also in disorders of cardiorespiratory control through its impact on laryngeal function. Our objective was to study the effect of reflux laryngitis on non-nutritive swallowing (NNS) and NNS-breathing coordination. Two groups of six newborn lambs, randomized into laryngitis and control groups, were surgically instrumented for recording states of alertness, swallowing and cardiorespiratory variables without sedation. A mild to moderate reflux laryngitis was induced in lambs from the experimental group. A significant decrease in the number of NNS bursts and apneas was observed in the laryngitis group in active sleep (p=0.03). In addition, lower heart and respiratory rates, as well as prolonged apnea duration (p<0.0001) were observed. No physiologically significant alterations in NNS-breathing coordination were observed in the laryngitis group. We conclude that a mild to moderate reflux laryngitis alters NNS burst frequency and autonomous control of cardiac activity and respiration in lambs.

25. Effects of postnatal environmental tobacco smoke on non-nutritive swallowing-breathing coordination in newborn lambs

Author

Duvareille, Charles, St-Hilaire, Marie, Samson, Nathalie, Bakirtzian, Parseh, Brisebois, Simon, Boheimier, Mathieu, Djeddi, Djamal-Dine, Doueik, Alexandre A., Praud, Jean-Paul, Duvareille, Charles, St-Hilaire, Marie, Samson, Nathalie, Bakirtzian, Parseh, Brisebois, Simon, Boheimier, Mathieu, Djeddi, Djamal-Dine, Doueik, Alexandre A., and Praud, Jean-Paul

Abstract

While prenatal environmental tobacco smoke (ETS) exposure is a well-known risk factor for sudden infant death syndrome, the effect of postnatal ETS exposure is less clear. The objective of this study was to investigate the effect of postnatal ETS exposure on non-nutritive swallowing (NNS) and NNS-breathing coordination, which are crucial to prevent aspiration related-cardiorespiratory events. Eighteen newborn lambs (6 per group) were randomly exposed to either 10 cigarettes/day, 20 cigarettes/day or room air for 15 days. Lambs were instrumented for recording states of alertness, swallowing, electrocardiogram and breathing; recordings were performed in non-sedated lambs at the end of ETS exposure. Urinary cotinine/creatinine ratio confirmed relevant real-life exposure. Postnatal ETS exposure had no effect on NNS frequency but tended to decrease inspiratory NNS (p=0.07) during quiet sleep. No effect on respiratory or heart rate (p>0.6), apnea index (p=0.2) or sleep states (p=0.3) was observed. In conclusion, postnatal ETS exposure in lambs had only mild effects on NNS-breathing coordination.

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