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Cocuzza S, Maniaci A, La Mantia I, Parisi FM, Lechien J, Mayo-Yanez M, Calvo M, Ayad T, Lentini M, Lavalle S, Fakhry N, Trovato L. Concordance in bacterial colonization profiles between voice prostheses and oral microbiota post-laryngectomy: An experimental study. Auris Nasus Larynx 2024; 51:783-791. [PMID: 38943902 DOI: 10.1016/j.anl.2024.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 06/03/2024] [Accepted: 06/21/2024] [Indexed: 07/01/2024]
Abstract
OBJECTIVE Knowledge about voice prosthesis microbial colonization is vital in laryngectomized patients' quality of life (QoL). Herein, we aimed to explore the relationship between oral microbial patterns, demographic variables and voice prosthesis performance. METHODS Thirty laryngectomy patients were assessed for microbial colonization in their voice prostheses and oral cavities. Factors like age, proton pump inhibitor (PPI) usage, and alcohol consumption were considered. RESULTS Participants' average age was 74.20 ± 7.31 years, with a majority on PPIs. Staphylococcus aureus was the most common bacterium in prostheses (53 %), followed by Pseudomonas aeruginosa (27 %). Candida albicans was the primary fungal colonizer (67 %). A statistically significant moderate correlation was found between fungal species before and after oral rinsing (p = 0.035, Phi=0.588, Cramer's V = 0.416). Voice prosthesis and oral cavity microbiota profiles showed significant concordance (kappa=0.315, p < 0.004). Among subgroup analyses, bacterial patterns of colonization did not significantly influence VHI (p = 0.9555), VrQoL (p = 0.6610), or SF-36 (p = 0.509) scores. Conversely, fungal patterns of VP colonization significantly impacted subjective voice scores, with Candida krusei demonstrating better VHI (35.25 ± 3.63 vs. 44.54 ± 6.33; p = 0.008), VrQoL (7.13 ± 1.69 vs. 10.73 ± 2.00; p = 0.001), and SF-36 (69.36 ± 7.09 vs. 76.50 ± 7.73; p = 0.051) scores compared to C. albicans. CONCLUSIONS There was a significant correlation between the oral microbiota and voice prosthesis colonization. These insights can inform improved care strategies for voice prostheses, enhancing patient outcomes.
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Affiliation(s)
- Salvatore Cocuzza
- Department of Medical, Surgical Sciences and Advanced Technologies "GF Ingrassia" ENT Section, University of Catania, Via S. Sofia 87, 95123 Catania, Italy
| | - Antonino Maniaci
- Faculty of Medicine and Surgery, University of Enna Kore, 94100 Enna
| | - Ignazio La Mantia
- Department of Medical, Surgical Sciences and Advanced Technologies "GF Ingrassia" ENT Section, University of Catania, Via S. Sofia 87, 95123 Catania, Italy
| | - Federica Maria Parisi
- Department of Medical, Surgical Sciences and Advanced Technologies "GF Ingrassia" ENT Section, University of Catania, Via S. Sofia 87, 95123 Catania, Italy
| | - Jerome Lechien
- Department of Human Anatomy and Experimental Oncology, UMONS Research Institute for Health Sciences and Technology, University of Mons (UMons), Mons 7011, Belgium
| | - Miguel Mayo-Yanez
- Otorhinolaryngology-Head and Neck Surgery Department, Complexo Hospitalario Universitario A Coruña (CHUAC), 15006 A Coruña, Spain; Otorhinolaryngology-Head and Neck Surgery Department, Hospital San Rafael (HSR) de A Coruña, 15006 A Coruña, Spain; Otorhinolaryngology - Head and Neck Surgery Research Group, Institute of Biomedical Research of A Coruña, (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Universidade da Coruña (UDC), 15006. A Coruña, Spain
| | - Maddalena Calvo
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123 Catania, Italy; U.O.C. Laboratory Analysis Unit, A.O.U. "Policlinico-San Marco"", Via S. Sofia 78, Catania, 95123, Italy
| | - Tareck Ayad
- Division of Otolaryngology-Head and Neck Surgery, Centre Hospitalier de L'Université de Montréal, Montreal, QC, Canada 07162
| | - Mario Lentini
- Department of Otolaryngology, ASP 7, Ragusa Hospital, Ragusa 97100, Italy
| | - Salvatore Lavalle
- Faculty of Medicine and Surgery, University of Enna Kore, 94100 Enna
| | - Nicolas Fakhry
- Department of Oto-Rhino-Laryngology Head and Neck Surgery, La Conception University Hospital, AP-HM, Aix Marseille Univ, Marseille 13006, France
| | - Laura Trovato
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123 Catania, Italy; U.O.C. Laboratory Analysis Unit, A.O.U. "Policlinico-San Marco"", Via S. Sofia 78, Catania, 95123, Italy.
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An R, Ni Z, Xie E, Rey FE, Kendziorski C, Thibeault SL. Single-cell view into the role of microbiota shaping host immunity in the larynx. iScience 2024; 27:110156. [PMID: 38974468 PMCID: PMC11225822 DOI: 10.1016/j.isci.2024.110156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/27/2024] [Accepted: 05/28/2024] [Indexed: 07/09/2024] Open
Abstract
Microbiota play a critical role in the development and training of host innate and adaptive immunity. We present the cellular landscape of the upper airway, specifically the larynx, by establishing a reference single-cell atlas, while dissecting the role of microbiota in cell development and function at single-cell resolution. We highlight the larynx's cellular heterogeneity with the identification of 16 cell types and 34 distinct subclusters. Our data demonstrate that commensal microbiota have extensive impact on the laryngeal immune system by regulating cell differentiation, increasing the expression of genes associated with host defense, and altering gene regulatory networks. We uncover macrophages, innate lymphoid cells, and multiple secretory epithelial cells, whose cell proportions and expressions vary with microbial exposure. These cell types play pivotal roles in maintaining laryngeal and upper airway health and provide specific guidance into understanding the mechanism of immune system regulation by microbiota in laryngeal health and disease.
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Affiliation(s)
- Ran An
- Department of Surgery, School of Medicine and Public Health (SMPH), University of Wisconsin-Madison, Madison, WI, USA
| | - Zijian Ni
- Department of Statistics, College of Letters and Sciences , UW-Madison, Madison, WI, USA
| | - Elliott Xie
- Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, UW-Madison, Madison, WI, USA
| | - Federico E. Rey
- Department of Bacteriology, College of Agriculture and Life Sciences, UW-Madison, Madison, WI, USA
| | - Christina Kendziorski
- Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, UW-Madison, Madison, WI, USA
| | - Susan L. Thibeault
- Department of Surgery, School of Medicine and Public Health (SMPH), University of Wisconsin-Madison, Madison, WI, USA
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Zheng X, Zheng Y, Chen T, Hou C, Zhou L, Liu C, Zheng J, Hu R. Effect of Laryngopharyngeal Reflux and Potassium-Competitive Acid Blocker (P-CAB) on the Microbiological Comprise of the Laryngopharynx. Otolaryngol Head Neck Surg 2024; 170:1380-1390. [PMID: 38385787 DOI: 10.1002/ohn.682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/27/2023] [Accepted: 01/21/2024] [Indexed: 02/23/2024]
Abstract
OBJECTIVE To probe the microbiota composition progressing from healthy individuals to those with laryngopharyngeal reflux disease (LPRD) and subsequently undergoing potassium-competitive acid inhibitor (P-CAB) therapy. STUDY DESIGN Prospective case-control study. SETTING Academic Medical Center. METHODS Forty patients with LPRD and 51 patients without LPRD were recruited. An 8-week P-CAB therapy was initiated (post-T-LPRD), and 39 had return visits. In total, 130 laryngopharyngeal saliva samples were collected and sequenced by targeting the V3-V4 region of the 16S ribosomal RNA (rRNA) gene using an Illumina MiSeq. Amplicon sequence variants (ASVs) and clinical indices were analyzed. RESULTS Alpha and beta diversities were compared among the non-LPRD, LPRD, and post-T-LPRD groups, and the Observed_ASVs were not significantly different. At the same time, the Shannon and Simpson indices, unweighted Unifrac, weighted Unifrac, and binary Jaccard distance were significantly different between non-LPRD and LPRD groups. In addition, significant differences were found in the abundance of Streptococcus, Prevotella, and Prevotellaceae in the LPRD versus non-LPRD groups, and Neisseria, Leptotrichia, and Allprevotella in the LPRD versus post-T-LPRD groups. The genera model was used to distinguish patients with LPRD from those without, and a better receiver operating characteristic curve was formed after combining the clinical indices of reflux symptom index, reflux finding score, and pepsin, with an area under the curve of 0.960. CONCLUSION Laryngopharyngeal microbial communities changed after laryngopharyngeal reflux and were modified further after P-CAB treatment, which provides a potential diagnostic value for LPRD, especially when combined with clinical indices.
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Affiliation(s)
- Xiaowei Zheng
- Department of Otorhinolaryngology-Head and Neck Surgery, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Yujin Zheng
- Department of Otorhinolaryngology-Head and Neck Surgery, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Ting Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Chenjie Hou
- Department of Otorhinolaryngology-Head and Neck Surgery, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Liqun Zhou
- Department of Otorhinolaryngology-Head and Neck Surgery, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Chaofeng Liu
- Department of Otorhinolaryngology-Head and Neck Surgery, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Jingyi Zheng
- Department of Otorhinolaryngology-Head and Neck Surgery, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Renyou Hu
- Chongqing Jinshan Science & Technology (Group) Co. Ltd., Chongqing, China
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Ghosh Moulic A, Deshmukh P, Gaurkar SS. A Comprehensive Review on Biofilms in Otorhinolaryngology: Understanding the Pathogenesis, Diagnosis, and Treatment Strategies. Cureus 2024; 16:e57634. [PMID: 38707023 PMCID: PMC11070220 DOI: 10.7759/cureus.57634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 04/04/2024] [Indexed: 05/07/2024] Open
Abstract
Biofilms, structured communities of microorganisms encased in a self-produced matrix, pose significant challenges in otorhinolaryngology due to their role in chronic and recurrent infections affecting the ear, nose, and throat (ENT) region. This review provides an overview of biofilms, emphasizing their formation, pathogenesis, diagnosis, and treatment strategies in otorhinolaryngological disorders. Biofilms are pivotal in chronic rhinosinusitis (CRS), otitis media, laryngopharyngeal reflux (LPR), and tonsillitis, contributing to treatment resistance and disease recurrence. Current diagnostic techniques, including imaging modalities, microbiological cultures, and molecular techniques, are discussed, alongside emerging technologies. Treatment strategies, ranging from conventional antibiotics to alternative therapies, such as biofilm disruptors, phage therapy, and immunomodulation, are evaluated in terms of their efficacy and potential clinical applications. The review underscores the significance of understanding biofilms in otorhinolaryngology and highlights the need for tailored approaches to diagnosis and management to improve patient outcomes.
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Affiliation(s)
- Ayushi Ghosh Moulic
- Otorhinolaryngology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education & Research, Wardha, IND
| | - Prasad Deshmukh
- Otorhinolaryngology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education & Research, Wardha, IND
| | - Sagar S Gaurkar
- Otorhinolaryngology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education & Research, Wardha, IND
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Kuzy J, Marshall C, Ranjbar PA, Alnouri G, Omari AA, Sethi HK, Sataloff RT. Characterization of Laryngopharyngeal Reflux in the Elderly Population. J Voice 2024:S0892-1997(23)00366-1. [PMID: 38326172 DOI: 10.1016/j.jvoice.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/06/2023] [Indexed: 02/09/2024]
Abstract
INTRODUCTION Laryngopharyngeal reflux (LPR) often is not diagnosed due to its presentation without heartburn. The aim of this study was to analyze the signs and symptoms of elderly patients undergoing treatment for LPR using subjective as well as objective measures including strobovideolaryngoscopies, 24-hour pH studies, and manometry to highlight appropriate considerations for diagnosis and treatment. METHODS This was a retrospective review of patients with laryngopharyngeal reflux who were seen from January 2010 to February 2021 in the practice of the senior author (Robert T. Sataloff) who had undergone 24-hour pH testing, and for whom all data were available. Patients aged 60 years and older were considered elderly and compared to patients younger than 40 and between the ages of 40 and 59. However, patients in their 60s, 70s, and 80s were evaluated and compared separately. Objective reflux findings, 24-hour pH studies, and manometry were compared between groups. RESULTS Two hundred and eighty-eight patients being treated for LPR were included, 100 of whom were over the age of 60. While 94.1% of patients younger than 40 had a chief complaint of hoarseness, 71% percent of those aged 60 and older complained of hoarseness. Patients aged 60 and older were more likely to present with no voice complaint as their age increased (P = 0.001). Lower esophageal sphincter residual pressure was 12.15 ± 6.28 in elderly patients compared to 4.90 ± 3.38 in patients younger than 40 (P < 0.001). Upper esophageal sphincter (UES) basal pressure was decreased in elderly patients at 83.84 ± 50.53 compared to 105.92 ± 51.49 in patients younger than 60 or younger (P = 0.029). Older patients in their 70s and 80s also had lower UES basal pressures at 75.79 ± 47.66 and 63.45 ± 14.50 (P = 0.003). Additionally, while 71.4% of patients younger than 40 had normal esophageal motility (Chicago classification v4), only 40% of elderly patients had normal esophageal motility (P < 0.001). More severe ventricular obliteration also was present in elderly patients compared to non-elderly patients (P = 0.032), and thick endolaryngeal mucus was less likely to be present in elderly patients (P = 0.007). Reflux finding score differed between age groups with patients aged less than 40 scoring 14.78 ± 2.5, 40-59 year olds scoring 15.83 ± 2.13 and patients 60 and older scoring 15.48 ± 2.43 (P = 0.018). CONCLUSION Elderly patients diagnosed with LPR have different presentations of the disease compared with younger patients.
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Affiliation(s)
- Jacob Kuzy
- Drexel University College of Medicine, Philadelphia, Pennsylvania.
| | - Camryn Marshall
- Charles E. Schmidt College of Medicine at Florida Atlantic University, Boca Raton, Florida.
| | - Parastou Azadeh Ranjbar
- Department of Otolaryngology, Head and Neck Surgery, Tulane University School of Medicine, Boca Raton, Florida.
| | - Ghiath Alnouri
- Department of Otolaryngology - Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, Pennsylvania.
| | - Ahmad Al Omari
- Department of Special Surgery, Jordan University of Science and Technology, Irbid, Jordan; Department of Otolaryngology - Head and Neck Surgery, University of Pittsburgh Medical Center Memorial Hospital, York, Pennsylvania.
| | - Harleen K Sethi
- Department of Otolaryngology - Head and Neck Surgery, Philadelphia College of Osteopathic Medicine, Philadelphia, Pennsylvania.
| | - Robert T Sataloff
- Department of Otolaryngology - Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, Pennsylvania.
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Oberste M, Böse BE, Dos Anjos Borges LG, Junca H, Plumeier I, Kahl S, Simon F, Beule AG, Rudack C, Pieper DH. Effects of squamous cell carcinoma and smoking status on oropharyngeal and laryngeal microbial communities. Head Neck 2024; 46:145-160. [PMID: 37905455 DOI: 10.1002/hed.27562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/07/2023] [Accepted: 10/16/2023] [Indexed: 11/02/2023] Open
Abstract
BACKGROUND Still, little is known about microbial dysbiosis in oropharyngeal and laryngeal tissue as risk factor for development of local squamous cell carcinoma. The site-specific microbiota at these regions in healthy and cancer tissue and their modulation by environmental factors need to be defined. METHODS The local microbiota of cancer tissue and healthy controls was profiled by 16S rRNA gene amplicon sequencing and statistical analysis using 111 oropharyngeal and 72 laryngeal intraoperative swabs. RESULTS Oropharynx and larynx harbor distinct microbial communities. Clear effects of both smoking and cancer were seen in the oropharynx whereas effects in the larynx were minor. CONCLUSION The distinct microbial communities at larynx and oropharynx partially explain why the effects of cancer and smoking were distinct at those sites. Thus, the use of microbiota supposed to mirror community changes in another target location should be avoided and more studies on the actual cancerous environment are necessary.
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Affiliation(s)
- Maximilian Oberste
- Department of Otorhinolaryngology - Head and Neck Surgery, University Hospital of Münster, Münster, Germany
| | - Brit Elisabeth Böse
- Department of Otorhinolaryngology - Head and Neck Surgery, University Hospital of Münster, Münster, Germany
| | | | - Howard Junca
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Iris Plumeier
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Silke Kahl
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Frank Simon
- Department of Otorhinolaryngology - Head and Neck Surgery, University Hospital of Münster, Münster, Germany
| | - Achim Georg Beule
- Department of Otorhinolaryngology - Head and Neck Surgery, University Hospital of Münster, Münster, Germany
| | - Claudia Rudack
- Department of Otorhinolaryngology - Head and Neck Surgery, University Hospital of Münster, Münster, Germany
| | - Dietmar H Pieper
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, Braunschweig, Germany
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Conti KR, Zhao A, Hunt E, Jaworek AJ. Practical Application of Culture-Directed Treatment for Chronic Bacterial Laryngitis. Laryngoscope 2024; 134:335-339. [PMID: 37515504 DOI: 10.1002/lary.30906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/25/2023] [Accepted: 07/11/2023] [Indexed: 07/31/2023]
Abstract
BACKGROUND/OBJECTIVES Situated at the center of the upper aerodigestive tract, the larynx often is susceptible to a variety of insults including infection. Manifestations of laryngitis include hoarseness, cough, and sore throat, among others. The purpose of this research is to better understand the clinical presentation and patient characteristics of chronic infectious laryngitis. We aim to better understand when culture-directed therapy should be initiated in patients presenting to the otolaryngologist with suspected chronic infectious laryngitis and how this may influence treatment outcomes. METHODS A single center, retrospective chart review was performed for patients with laryngitis of >3 weeks duration and who had positive laryngeal cultures obtained at a tertiary referral laryngology office from January 2016 through January 2023. RESULTS Twenty-four patients (ages 36-84 years) with 29 positive cultures of the larynx met inclusion criteria. Ninety percent of patients were already on acid suppression therapy prior to culture acquisition. Fifty-five percent were immunocompromised. The most common species of bacterial growth included Klebsiella sp. (27.5%), Staphylococcus sp. (27.5%), and methicillin-resistant staphylococcus sp. (13.7%). Twelve cultures (41.4%) revealed multiple bacterial species, and 10 cultures (34.5%) had concomitant fungal isolates. The average treatment duration was 10 days. Twenty-one patients (72%) experienced improvement or resolution in symptoms after completion of culture-directed therapy. CONCLUSIONS The use of culture-directed therapy for chronic bacterial laryngitis was helpful in the determination of appropriate treatment in these cases. More studies are needed to determine the optimal timing of cultures, duration of treatment, and implications of concomitant fungal laryngitis. LEVEL OF EVIDENCE 4 Laryngoscope, 134:335-339, 2024.
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Affiliation(s)
- Keith R Conti
- Division of Otolaryngology, Department of Surgery, St. Luke's University Health Network, Bethlehem, Pennsylvania, U.S.A
| | - Adelaide Zhao
- Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania, U.S.A
| | - Erin Hunt
- Division of Otolaryngology, Department of Surgery, St. Luke's University Health Network, Bethlehem, Pennsylvania, U.S.A
| | - Aaron J Jaworek
- Division of Otolaryngology, Department of Surgery, St. Luke's University Health Network, Bethlehem, Pennsylvania, U.S.A
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Leroue MK, Williamson KM, Curtin PC, Sontag MK, Wagner BD, Ambroggio L, Bixby M, Busgang SA, Murphy SE, Peterson LA, Vevang KR, Sipe CJ, Kirk Harris J, Reeder RW, Locandro C, Carpenter TC, Maddux AB, Simões EAF, Osborne CM, Robertson CE, Langelier C, Carcillo JA, Meert KL, Pollack MM, McQuillen PS, Mourani PM. Tobacco smoke exposure, the lower airways microbiome and outcomes of ventilated children. Pediatr Res 2023; 94:660-667. [PMID: 36750739 PMCID: PMC9903281 DOI: 10.1038/s41390-023-02502-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 12/18/2022] [Accepted: 01/16/2023] [Indexed: 02/09/2023]
Abstract
BACKGROUND Tobacco smoke exposure increases the risk and severity of lower respiratory tract infections in children, yet the mechanisms remain unclear. We hypothesized that tobacco smoke exposure would modify the lower airway microbiome. METHODS Secondary analysis of a multicenter cohort of 362 children between ages 31 days and 18 years mechanically ventilated for >72 h. Tracheal aspirates from 298 patients, collected within 24 h of intubation, were evaluated via 16 S ribosomal RNA sequencing. Smoke exposure was determined by creatinine corrected urine cotinine levels ≥30 µg/g. RESULTS Patients had a median age of 16 (IQR 568) months. The most common admission diagnosis was lower respiratory tract infection (53%). Seventy-four (20%) patients were smoke exposed and exhibited decreased richness and Shannon diversity. Smoke exposed children had higher relative abundances of Serratia spp., Moraxella spp., Haemophilus spp., and Staphylococcus aureus. Differences were most notable in patients with bacterial and viral respiratory infections. There were no differences in development of acute respiratory distress syndrome, days of mechanical ventilation, ventilator free days at 28 days, length of stay, or mortality. CONCLUSION Among critically ill children requiring prolonged mechanical ventilation, tobacco smoke exposure is associated with decreased richness and Shannon diversity and change in microbial communities. IMPACT Tobacco smoke exposure is associated with changes in the lower airways microbiome but is not associated with clinical outcomes among critically ill pediatric patients requiring prolonged mechanical ventilation. This study is among the first to evaluate the impact of tobacco smoke exposure on the lower airway microbiome in children. This research helps elucidate the relationship between tobacco smoke exposure and the lower airway microbiome and may provide a possible mechanism by which tobacco smoke exposure increases the risk for poor outcomes in children.
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Affiliation(s)
- Matthew K Leroue
- Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA.
| | - Kayla M Williamson
- Biostatistics and Informatics, University of Colorado, Colorado School of Public Health, Aurora, CO, USA
| | - Paul C Curtin
- CHEAR Data Center, Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Marci K Sontag
- Epidemiology, University of Colorado, Colorado School of Public Health, Aurora, CO, USA
| | - Brandie D Wagner
- Biostatistics and Informatics, University of Colorado, Colorado School of Public Health, Aurora, CO, USA
| | - Lilliam Ambroggio
- Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
| | - Moira Bixby
- CHEAR Data Center, Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Stefanie A Busgang
- CHEAR Data Center, Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sharon E Murphy
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Lisa A Peterson
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Karin R Vevang
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | | | - J Kirk Harris
- Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
| | - Ron W Reeder
- Pediatrics, University of Utah, Salt Lake City, UT, USA
| | | | - Todd C Carpenter
- Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
| | - Aline B Maddux
- Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
| | - Eric A F Simões
- Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
- Epidemiology, University of Colorado, Colorado School of Public Health, Aurora, CO, USA
| | - Christina M Osborne
- Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
| | - Charles E Robertson
- Medicine, Division of Infectious Diseases, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
| | - Charles Langelier
- Medicine, Division of Infectious Diseases, University of California San Francisco, San Francisco, CA, USA
- Chan Zuckerberg Biohub, San Francisco, CA, USA
| | | | - Kathleen L Meert
- Pediatrics, Children's Hospital of Michigan, Central Michigan University, Detroit, MI, USA
| | | | | | - Peter M Mourani
- Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
- Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children's Research Institute, Little Rock, AR, USA
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Yan K, Auger S, Diaz A, Naman J, Vemulapalli R, Hasina R, Izumchenko E, Shogan B, Agrawal N. Microbial Changes Associated With Oral Cavity Cancer Progression. Otolaryngol Head Neck Surg 2023; 168:1443-1452. [PMID: 36939272 PMCID: PMC10213157 DOI: 10.1002/ohn.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 11/05/2022] [Accepted: 11/10/2022] [Indexed: 01/25/2023]
Abstract
OBJECTIVE To examine the oral microbiome in the context of oral cavity squamous cell carcinoma. STUDY DESIGN Basic science research. SETTING Academic medical center. METHODS Oral swabs were collected from patients presenting to the operating room for management of oral cavity squamous cell carcinoma and from age- and sex-matched control patients receiving surgery for unrelated benign conditions. 16S ribosomal RNA (rRNA) sequencing was performed on genetic material obtained from swabs. A bacterial rRNA gene library was created and sequence reads were sorted into taxonomic units. RESULTS Thirty-one control patients (17 males) and 35 cancer patients (21 males) were enrolled. Ages ranged from 23 to 89 (median 63) for control patients and 35 to 86 (median 66) for cancer patients. Sixty-one percent of control patients and 63% of cancer patients were smokers. 16S analyses demonstrated a significant decrease in Streptococcus genera in oral cancer patients (34.11% vs 21.74% of the population, p = .04). Increases in Fusobacterium, Peptostreptococcus, Parvimonas, and Neisseria were also found. The abundance of these bacteria correlated with tumor T-stage. CONCLUSION 16S rRNA sequencing demonstrated changes in bacterial populations in oral cavity cancer and its progression compared to noncancer controls. We found increases in bacteria genera that correspond with tumor stage-Fusobacteria, Peptostreptococcus, Parvimonas, Neisseria, and Treponema. These data suggest that oral cancer creates an environment to facilitate foreign bacterial growth, rather than implicating a specific bacterial species in carcinogenesis. These bacteria can be employed as a potential marker for tumor progression or interrogated to better characterize the tumor microenvironment.
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Affiliation(s)
- Kenneth Yan
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Samuel Auger
- Department of Surgery, Section of Otolaryngology, University of Chicago Medicine, Chicago, Illinois, USA
| | - Ashley Diaz
- Pritzker School of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Julia Naman
- Department of Surgery, Section of Otolaryngology, University of Chicago Medicine, Chicago, Illinois, USA
| | - Ramya Vemulapalli
- Department of Surgery, Section of Otolaryngology, University of Chicago Medicine, Chicago, Illinois, USA
| | - Rifat Hasina
- Department of Surgery, Section of Otolaryngology, University of Chicago Medicine, Chicago, Illinois, USA
| | - Evgeny Izumchenko
- Department of Medicine, Section of Hematology and Oncology, University of Chicago Medicine, Chicago, Illinois, USA
| | - Benjamin Shogan
- Department of Medicine, Section of Hematology and Oncology, University of Chicago Medicine, Chicago, Illinois, USA
| | - Nishant Agrawal
- Department of Surgery, Section of Otolaryngology, University of Chicago Medicine, Chicago, Illinois, USA
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10
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An Updated Review of Subglottic Stenosis: Etiology, Evaluation, and Management. CURRENT PULMONOLOGY REPORTS 2022; 11:29-38. [PMID: 35261874 PMCID: PMC8892813 DOI: 10.1007/s13665-022-00286-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2022] [Indexed: 12/27/2022]
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11
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Samarrai R, Frank S, Lum A, Woodis K, Weinstock G, Roberts D. Defining the microbiome of the head and neck: A contemporary review. Am J Otolaryngol 2022; 43:103224. [PMID: 34536920 DOI: 10.1016/j.amjoto.2021.103224] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/06/2021] [Indexed: 11/01/2022]
Abstract
OBJECTIVE The purpose of this paper is to define the microbiome of the head and neck by characterizing and distinguishing the commensal bacteria from pathogenic species. STUDY DESIGN Literature review. METHODS Pubmed and Google scholar databases were queried for relevant articles. Keywords such as "middle ear microbiome", "outer ear microbiome", "sinonasal microbiome", "tonsil microbiome", and "laryngeal microbiome" were utilized separately to identify articles pertaining to each topic of study. All applicable abstracts were chosen for initial review and relevant abstracts were then selected for review of the full texts. Articles that did not study the human microbiome, those not written primarily in English, those that were not readily available for full review, and case reports were excluded from the study. RESULTS Limited studies that investigate the microbial environments of isolated anatomic subsites in the head and neck exist, however the comprehensive microbiome of the head and neck has yet to be completely defined. Based on this review, various studies of the ears, larynx, tonsils and sinus microbiomes exist and yield valuable information, however they are limited in scope and anatomic subsite. In this literature review, these studies are compiled in order to create a comprehensive text inclusive of the known microbial elements of the major anatomic subsites of the head and neck, namely the tonsils, larynx, sinus, outer ear and middle ear. CONCLUSIONS The significance of the human microbiome in identifying and preventing disease has been established in various physiologic systems, however there is limited research on the microbiome of the head and neck. Understanding the microbiome of the head and neck can help differentiate disease-prone patients from normal patients and guide treatment regimens and antibiotic usage, to aid in resistance control and limit adverse effects of antibiotic overuse. Understanding the elements that lead to dysbiosis can help treat and even prevent common conditions as tonsillitis and rhinosinusitis. In this review, we provide a comprehensive review to serve as an initial background for future studies to define the head and neck microbiome distinguished by all relevant subsites.
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12
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Understanding the link between the oral microbiome and the development and progression of head and neck squamous cell carcinoma. CURRENT OPINION IN PHYSIOLOGY 2021. [DOI: 10.1016/j.cophys.2021.100471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Effects of Heat-Killed Lactococcus lactis Strain Plasma on Skin Homeostasis-Related Genes and the Skin Microbiome among Healthy Adults: A Randomized Controlled Double-Blind Study. Microorganisms 2021; 9:microorganisms9102029. [PMID: 34683350 PMCID: PMC8539941 DOI: 10.3390/microorganisms9102029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/13/2021] [Accepted: 09/18/2021] [Indexed: 12/03/2022] Open
Abstract
Lactococcus lactis subsp. lactis strain plasma (LC-plasma) is a bacterial strain that activates plasmacytoid dendritic cells and induces viral resistance genes via the TLR9/MyD88 pathway. We recently showed that oral administration of LC-plasma prevents skin infection by Staphylococcus aureus, possibly by activating skin immunity. In this study, we conducted a double-blind clinical trial to investigate the effect of oral administration of heat-killed LC-plasma on the skin microbiome, gene expression in the skin, and the skin condition of healthy volunteers. Seventy healthy volunteers were randomly assigned to receive either heat-killed LC-plasma or a placebo for eight weeks. Analysis of the skin microbiome by next-generation sequencing suggested that the alpha-diversity of the skin microbiome did not change during the test period in either group. However, the proportion of species that changed significantly during the test period was 10-fold smaller in the LC-plasma group than in the placebo group, suggesting that LC-plasma may maintain the skin microbiome. Quantitative PCR analysis indicated that tight-junction genes, such as CLDN1 and CLDN12, and the antimicrobial peptide gene BD3 were significantly up-regulated in the LC-plasma group but not in the placebo group. Our results suggest that administration of LC-plasma helps to maintain the skin microbiome and that it affects homeostasis-related genes.
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14
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Dong Z, Zhang C, Zhao Q, Huangfu H, Xue X, Wen S, Wu Y, Gao W, Wang B. Alterations of bacterial communities of vocal cord mucous membrane increases the risk for glottic laryngeal squamous cell carcinoma. J Cancer 2021; 12:4049-4063. [PMID: 34093809 PMCID: PMC8176248 DOI: 10.7150/jca.54221] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 04/21/2021] [Indexed: 01/02/2023] Open
Abstract
Bacteria are among the important factors that play a role in the balance of human health, and their relationship with some tumors has been well established. However, the association between bacteria colonizing the vocal cords and glottic laryngeal squamous cell carcinoma (GLSCC) remains unclear. Here, we investigated whether bacterial communities of the vocal cord mucous membrane play a role in the development of GLSCC. We collected tumor tissue and normal adjacent tissue (NAT) samples from 19 GLSCC patients, and the bacterial communities were compared with control samples (control) from 21 vocal cord polyps using 16S rRNA high-throughput pyrosequencing. We detected 41 phyla, 93 classes, 188 orders, 373 families, and 829 genera in the vocal cord mucous membrane. A comparison of the bacterial communities in the NAT samples showed higher α‐diversity than in the tumor samples. In the tumor samples, seven groups of bacteria, i.e., the phylum Fusobacteria, the class Fusobacteriia, the order Fusobacteriales, the family Fusobacteriaceae, and the genera Fusobacterium, Alloprevotella, and Prevotella, were significantly enriched, as revealed by linear discriminant analysis coupled with effect size measurements (LEfSe). However, bacteria from the phylum Firmicutes were most significantly enriched in the vocal cord polyp tissues. These findings suggest alterations in the bacterial community structure of the vocal cord mucous membrane of GLSCC patients and that seven groups of bacteria are related to GLSCC, indicating that imbalances in bacterial communities increase the risk for the development of GLSCC.
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Affiliation(s)
- Zhen Dong
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Department of Otolaryngology Head & Neck Surgery, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Chunming Zhang
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Department of Otolaryngology Head & Neck Surgery, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Qinli Zhao
- Department of Otolaryngology Head & Neck Surgery, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Hui Huangfu
- Department of Otolaryngology Head & Neck Surgery, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Xuting Xue
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Shuxin Wen
- Department of Otolaryngology Head & Neck Surgery, Shanxi Bethune Hospital, Taiyuan 030032, China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Yongyan Wu
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, China.,Department of Biochemistry & Molecular Biology, Shanxi Medical University, Taiyuan 030001, China
| | - Wei Gao
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, China.,Department of Cell biology and Genetics, Basic Medical School, Shanxi Medical University, Taiyuan 030001, China
| | - Binquan Wang
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Department of Otolaryngology Head & Neck Surgery, First Hospital of Shanxi Medical University, Taiyuan 030001, China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China
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15
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Tai J, Han MS, Kwak J, Kim TH. Association Between Microbiota and Nasal Mucosal Diseases in terms of Immunity. Int J Mol Sci 2021; 22:4744. [PMID: 33947066 PMCID: PMC8124637 DOI: 10.3390/ijms22094744] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 12/23/2022] Open
Abstract
The pathogenesis of nasal inflammatory diseases is related to various factors such as anatomical structure, heredity, and environment. The nasal microbiota play a key role in coordinating immune system functions. Dysfunction of the microbiota has a significant impact on the occurrence and development of nasal inflammation. This review will introduce the positive and negative roles of microbiota involved in immunity surrounding nasal mucosal diseases such as chronic sinusitis and allergic rhinitis. In addition, we will also introduce recent developments in DNA sequencing, metabolomics, and proteomics combined with computation-based bioinformatics.
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Affiliation(s)
- Junhu Tai
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul 02841, Korea
| | - Mun Soo Han
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul 02841, Korea
| | - Jiwon Kwak
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul 02841, Korea
| | - Tae Hoon Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul 02841, Korea
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16
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Meenan K, Bhatnagar K, Guardiani E. Intubation-Related Laryngeal Pathology Precluding Tracheostomy Decannulation: Incidence and Associated Risk Factors. Ann Otol Rhinol Laryngol 2021; 130:1078-1084. [PMID: 33583187 DOI: 10.1177/0003489421995285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES To identify the incidence and risk factors for intubation-related laryngeal lesions that preclude tracheostomy decannulation in a large population. METHODS A 3-year retrospective case-control study was performed of tracheotomized adults in acute rehabilitation facilities who underwent routine endoscopic evaluation of the airway as part of the facilities' decannulation protocol. Patients with known upper airway pathology, external laryngeal trauma, cricothyrotomy or emergent tracheostomy, prior head and neck radiation, isolated tracheal lesions, and patients with incomplete reports were excluded. The laryngeal pathologies were classified, and demographics and clinical features were compared between those whose lesions precluded decannulation and all other patients. RESULTS Three hundred seventy-one patients met inclusion criteria. One hundred six (28.6%) had laryngotracheal lesions. Forty-nine patients (13.2%) had intubation-related lesions of the larynx that precluded decannulation. These lesions included posterior glottic stenosis (30.6%), granulation tissue (24.5%), vocal fold immobility (16.3%), subglottic stenosis (16.3%), a combination of granulation tissue and stenosis (10.2%), and glottic edema (2.0%). A BMI ≥ 25 kg/m2 was associated with laryngeal lesions precluding decannulation. There was no difference in age, sex, race, diabetes mellitus, endotracheal tube size, number of days intubated, and number of intubations between groups. Seventy-eight percent of patients with lesions precluding decannulation were decannulated after medical or surgical therapy. The decannulation rate of patients without lesions precluding decannulation was 79.9%. CONCLUSIONS BMI ≥ 25 kg/m2 may increase the risk of development of laryngeal lesions preventing decannulation. Given that 13.2% of tracheotomized patients have laryngeal lesions precluding decannulation, an endoscopic evaluation of the airway is important to prevent decannulation failure and future airway symptoms.
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Affiliation(s)
- Kirsten Meenan
- Department of Otolaryngology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Kavita Bhatnagar
- Department of Otolaryngology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Elizabeth Guardiani
- Department of Otolaryngology, University of Maryland School of Medicine, Baltimore, MD, USA
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17
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Onyango GM, Bialosuknia MS, Payne FA, Mathias N, Ciota TA, Kramer DL. Increase in temperature enriches heat tolerant taxa in Aedes aegypti midguts. Sci Rep 2020; 10:19135. [PMID: 33154438 PMCID: PMC7644690 DOI: 10.1038/s41598-020-76188-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 06/15/2020] [Indexed: 02/06/2023] Open
Abstract
Insect midgut microbial symbionts have been considered as an integral component in thermal adaptation due to their differential thermal sensitivity. Altered midgut microbial communities can influence both insect physiology and competence for important vector-borne pathogens. This study sought to gain insights into how Aedes aegypti midgut microbes and life history traits are affected by increase in baseline diurnal temperature. Increase in temperature resulted in the enrichment of specific taxa with Bacillus being the most enriched. Bacillus is known to be heat tolerant. It also resulted in a dissimilar microbial assemblage (Bray-Curtis Index, PERMANOVA, F = 2.2063; R2 = 0.16706; P = 0.002) and reduced survivorship (Log-rank [Mantel-Cox] test, Chi-square = 35.66 df = 5, P < 0.0001). Blood meal intake resulted in proliferation of pathogenic bacteria such as Elizabethkingia in the midgut of the mosquitoes. These results suggest that alteration of temperature within realistic parameters such as 2 °C for Ae. aegypti in nature may impact the midgut microbiome favoring specific taxa that could alter mosquito fitness, adaptation and vector-pathogen interactions.
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Affiliation(s)
- Gorreti Maria Onyango
- Wadsworth Center, New York State Department of Health, 5668 State Farm Road, Slingerlands, NY, 12159, USA
| | - M Sean Bialosuknia
- Wadsworth Center, New York State Department of Health, 5668 State Farm Road, Slingerlands, NY, 12159, USA
- School of Public Health, State University of New York Albany, 1400 Washington Avenue, Albany, NY, 12222, USA
| | - F Anne Payne
- Wadsworth Center, New York State Department of Health, 5668 State Farm Road, Slingerlands, NY, 12159, USA
| | - Nicholas Mathias
- Wadsworth Center, New York State Department of Health, 5668 State Farm Road, Slingerlands, NY, 12159, USA
| | - T Alexander Ciota
- Wadsworth Center, New York State Department of Health, 5668 State Farm Road, Slingerlands, NY, 12159, USA
- School of Public Health, State University of New York Albany, 1400 Washington Avenue, Albany, NY, 12222, USA
| | - D Laura Kramer
- Wadsworth Center, New York State Department of Health, 5668 State Farm Road, Slingerlands, NY, 12159, USA.
- School of Public Health, State University of New York Albany, 1400 Washington Avenue, Albany, NY, 12222, USA.
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18
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An R, Gowda M, Rey FE, Thibeault SL. Selective Bacterial Colonization of the Murine Larynx in a Gnotobiotic Model. Front Microbiol 2020; 11:594617. [PMID: 33250883 PMCID: PMC7676279 DOI: 10.3389/fmicb.2020.594617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/08/2020] [Indexed: 01/04/2023] Open
Abstract
The larynx is a mucosal organ situated between the respiratory and gastrointestinal tracts. Little is known about microbial contributions to laryngeal epithelial health and pathogenesis. Developing a gnotobiotic laryngeal model will introduce new avenues for targeted explorations of microbes in laryngeal mucosal biology, allowing for enhanced understanding of host-microbe interaction in the upper airway. In this study, we first assessed the potential of using gut microbiota as a source to establish laryngeal microbiota in germ-free mice. Results demonstrated the selective nature of the upper airway and provided evidence that gut bacteria can assemble into communities that resemble the commensal resident bacteria occurring in the larynx of conventionally-raised animals phylogenetically and functionally. Then, we confirmed the reproducibility of laryngeal colonization through comparison of laryngeal microbiota in the larynx along with neighboring regions (base of tongue, esophagus, and trachea) between conventionally-raised and germ-free mice that conventionalized with cecal microbiota. Despite taxonomic differences, the established laryngeal microbiota from cecal content exhibited similarity to commensal resident microbiota in diversity within/between communities and predicted metagenomic functions. Our data also suggests little difference in bacterial distribution across the larynx and its surrounding regions and that cell motility and the ability to degrade xenobiotics is critical for bacteria colonizing upper airway. Successful colonization of laryngeal and oropharyngeal regions with gut microbiota in our study will greatly facilitate the investigation of potential localized inflammatory responses within host tissues that contribute to the disorders of essential laryngeal functions. Utilizing said gnotobiotic model to conduct future studies will allow for novel insights into direct microbial contributions to laryngeal epithelial health and pathogenesis.
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Affiliation(s)
- Ran An
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States
| | - Madhu Gowda
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States
| | - Federico E. Rey
- Department of Bacteriology, University of Wisconsin–Madison, Madison, WI, United States
| | - Susan L. Thibeault
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States
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19
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Qazi S, Mau T, Tibbetts KM. Impact of Patient Factors and Management Strategies on Outcomes After Transverse Posterior Cordotomy. Laryngoscope 2020; 131:1066-1070. [PMID: 32678917 DOI: 10.1002/lary.28931] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/16/2020] [Accepted: 06/18/2020] [Indexed: 11/07/2022]
Abstract
OBJECTIVES/HYPOTHESIS Carbon dioxide laser transverse posterior cordotomy (TPC) aims to improve airway aperture in patients with glottic obstruction. Postoperative complications may worsen airway compromise and necessitate additional interventions. We sought to identify factors impacting outcomes after TPC. STUDY DESIGN Retrospective chart review. METHODS Medical records of patients who underwent TPC for glottic airway obstruction at a tertiary-care medical center between 2008 and 2018 were reviewed. Demographics, comorbidities, and intra- and postoperative management strategies were analyzed. RESULTS Twenty patients who underwent TPC for glottic airway obstruction met inclusion criteria. The mean age was 57 years, and 13 patients were female. Mean follow-up time was 442 days. Seven patients had posterior glottic stenosis, and 13 had bilateral vocal fold paralysis. Twelve patients developed postoperative complications including granuloma formation (four patients), hospital readmission for dyspnea due to glottic edema (five patients), need for revision surgery (nine patients), or failure to decannulate tracheotomy (five patients). Eight patients had an uncomplicated recovery with improved dyspnea, with two patients with tracheotomies decannulated. Patients with a history of smoking tobacco were more likely to experience complications (P = .035). There were no significant differences in outcomes with respect to history of head and neck radiation or gastroesophageal reflux disease. Steroid injection at the surgical site and postoperative medications did not significantly impact outcomes. With respect to granuloma formation, none of the variables analyzed reached significance. CONCLUSIONS History of tobacco use increases complication rates after TPC. Other patient comorbidities and intra- and postoperative management strategies do not impact outcomes. LEVEL OF EVIDENCE 4 Laryngoscope, 131:1066-1070, 2021.
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Affiliation(s)
- Shafeen Qazi
- Department of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, U.S.A
| | - Ted Mau
- Department of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, U.S.A
| | - Kathleen M Tibbetts
- Department of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, U.S.A
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20
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Sharma AK, DeBusk WT, Stepanov I, Gomez A, Khariwala SS. Oral Microbiome Profiling in Smokers with and without Head and Neck Cancer Reveals Variations Between Health and Disease. Cancer Prev Res (Phila) 2020; 13:463-474. [PMID: 32071121 DOI: 10.1158/1940-6207.capr-19-0459] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/08/2020] [Accepted: 02/14/2020] [Indexed: 11/16/2022]
Abstract
While smoking is inextricably linked to oral/head and neck cancer (HNSCC), only a small fraction of smokers develop HNSCC. Thus, we have sought to identify other factors, which may influence the development of HNSCC in smokers including microbiology. To determine microbial associations with HNSCC among tobacco users, we characterized oral microbiome composition in smokers with and without HNSCC. 16S rRNA MiSeq sequencing was used to examine the oral mucosa microbiome of 27 smokers with (cases) and 24 without HNSCC (controls). In addition, we correlated previously reported levels of DNA damage with the microbiome data. Smokers with HNSCC showed lower microbiome richness compared with controls (q = 0.012). Beta-diversity analyses, assessed as UniFrac (weighted and unweighted) and Bray-Curtis distances, showed significant differences in oral mucosal microbiome signatures between cases and controls (r 2 = 0.03; P = 0.03) and higher interindividual microbiome heterogeneity in the former (q ≤ 0.01). Higher relative abundance of Stenotrophomonas and Comamonadaceae and predicted bacterial pathways mainly involved in xenobiotic and amine degradation were found in cases compared with controls. The latter, in contrast, exhibited higher abundance of common oral commensals and predicted sugar degradation pathways. Finally, levels of DNA damage in the oral cavity were correlated with the microbiome profiles above. Oral microbiome traits differ in smokers with and without HNSCC, potentially informing the risk of eventual HNSCC and shedding light into possible microbially mediated mechanisms of disease. These findings present data that may be useful in screening efforts for HNSCC among smokers who are unable to quit.
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Affiliation(s)
- Ashok Kumar Sharma
- Department of Animal Science and Microbial and Plant Genomics Institute, University of Minnesota, Minneapolis, Minnesota
| | - William T DeBusk
- Department of Otolaryngology-Head and Neck Surgery, University of Minnesota, Minneapolis, Minnesota
| | - Irina Stepanov
- Division of Environmental Health Sciences, School of Public Health, University of Minnesota, Minneapolis, Minnesota
| | - Andres Gomez
- Department of Animal Science and Microbial and Plant Genomics Institute, University of Minnesota, Minneapolis, Minnesota.
| | - Samir S Khariwala
- Department of Otolaryngology-Head and Neck Surgery, University of Minnesota, Minneapolis, Minnesota.
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Balkissoon R. Journal Club-- COPD Exacerbations and Gastroesophageal Reflux Disease: Why Proton Pump Inhibitor Therapy is Not Enough. CHRONIC OBSTRUCTIVE PULMONARY DISEASES (MIAMI, FLA.) 2019; 6:374-379. [PMID: 31647860 PMCID: PMC7006696 DOI: 10.15326/jcopdf.6.4.2019.0162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
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22
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Kayalı Dinc AS, Cayonu M, Sengezer T, Sahin MM. Smoking Cessation Improves the Symptoms and the Findings of Laryngeal Irritation. EAR, NOSE & THROAT JOURNAL 2019; 99:124-127. [PMID: 31608685 DOI: 10.1177/0145561319881559] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Smoking is known to increase laryngeal inflammation and laryngopharyngeal reflux (LPR), which cause laryngeal irritation. Thus, the aim of this study is to evaluate the changes in the symptoms and the findings of laryngeal irritation in smokers after a smoking cessation period. The reflux symptom index (RSI) and the reflux finding score (RFS) were used for evaluating the symptoms and findings of laryngeal irritation in smokers. Endoscopic examination of the laryngeal structures for RFS and symptom inquiry for RSI were performed at the beginning of the study and after a 2 months of cigarette cessation period. This study was carried out in 24 volunteers (14 female and 10 male), between the ages of 24 and 62 years. When we compared the results of RSI and RFS that were performed before and after the cigarette cession period, we found that there was a significant improvement both in RSI and in RFS (P < .001 and P < .001, respectively). Also, there was significant correlation between the cigarette smoking period and RFS score that was determined at the beginning of the study (P = .006, r = .54). A significant improvement was found both in RSI and in RFS after smoking cessation period, which might be the evidence of improvement in laryngeal irritation possibly caused by inflammation due to smoking and LPR. A significant positive correlation was found between smoking period and RFS, especially with vocal fold edema and posterior commissure hypertrophy.
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Affiliation(s)
- A Secil Kayalı Dinc
- Department of Otorhinolaryngology, Ankara Numune Training and Research Hospital, Ankara, Turkey
| | - Melih Cayonu
- Department of Otorhinolaryngology, Ankara Numune Training and Research Hospital, Ankara, Turkey
| | - Tijen Sengezer
- Department of Family Medicine, Ankara Numune Training and Research Hospital, Ankara, Turkey
| | - M Melih Sahin
- Department of Otorhinolaryngology, Ankara Numune Training and Research Hospital, Ankara, Turkey
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Kolbe AR, Castro-Nallar E, Preciado D, Pérez-Losada M. Altered Middle Ear Microbiome in Children With Chronic Otitis Media With Effusion and Respiratory Illnesses. Front Cell Infect Microbiol 2019; 9:339. [PMID: 31637220 PMCID: PMC6787523 DOI: 10.3389/fcimb.2019.00339] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 09/18/2019] [Indexed: 11/25/2022] Open
Abstract
Chronic otitis media with effusion (COME) is a common childhood disease characterized by an accumulation of fluid behind the eardrum. COME often requires surgical intervention and can also lead to significant hearing loss and subsequent learning disabilities. Recent characterization of the middle ear fluid (MEF) microbiome in pediatric patients has led to an improved understanding of the microbiota present in the middle ear during COME. However, it is not currently known how the MEF microbiome might vary due to other conditions, particularly respiratory disorders. Here, we apply an amplicon sequence variant (ASV) pipeline to MEF 16S rRNA high-throughput sequencing data from 50 children with COME (ages 3–176 months) undergoing tube placement. We achieve a more detailed taxonomic resolution than previously reported, including species and genus level resolution. Additionally, we provide the first report of the functional roles of the MEF microbiome and demonstrate that despite high taxonomic diversity, the functional capacity of the MEF microbiome remains uniform between patients. Furthermore, we analyze microbiome differences between children with COME with and without a history of lower airway disease (i.e., asthma or bronchiolitis). The MEF microbiome was less diverse in participants with lower airway disease than in patients without, and phylogenetic β-diversity (weighted UniFrac) was significantly different based on lower airway disease status. Differential abundance between patients with lower airway disease and those without was observed for the genera Haemophilus, Moraxella, Staphylococcus, Alloiococcus, and Turicella. These findings support previous suggestions of a link between COME and respiratory illnesses and emphasize the need for future study of the middle ear and respiratory tract microbiomes in diseases such as asthma and bronchiolitis.
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Affiliation(s)
- Allison R Kolbe
- Department of Biostatistics and Bioinformatics, Milken Institute School of Public Health, Computational Biology Institute, The George Washington University, Washington, DC, United States
| | - Eduardo Castro-Nallar
- Facultad de Ciencias de la Vida, Center for Bioinformatics and Integrative Biology, Universidad Andrés Bello, Santiago, Chile
| | - Diego Preciado
- Division of Pediatric Otolaryngology, Sheikh Zayed Institute, Children's National Health System, Washington, DC, United States
| | - Marcos Pérez-Losada
- Department of Biostatistics and Bioinformatics, Milken Institute School of Public Health, Computational Biology Institute, The George Washington University, Washington, DC, United States.,CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade Do Porto, Vairão, Portugal
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Abstract
PURPOSE OF REVIEW Microbiome refers to the genetic potential of resident microorganisms that inhabit a given niche. The exact role of the microbiome and its relation to chronic disease processes remains largely unknown, although various associations have been observed. We reviewed current literature investigating the microbiome of the upper airway by subsite (nasal cavity, sinus cavities, nasopharynx, and larynx) and its relation to chronic inflammatory disease processes. RECENT FINDINGS The disruption of indigenous microbiota at a specific subsite may lead to pathogen overgrowth and increased susceptibility to infection. This has previously been demonstrated in the gastrointestinal tract and lower airways. The role of the microbiome and its relation to pathogenesis of disease in the upper airway, however, is less clearly understood. The present review discusses the recent studies that appear to link dysbiosis to upper airway chronic inflammatory diseases. SUMMARY Despite mounting research, the role of microbiota in the upper airway remains poorly understood. Based on review of the current literature comparing healthy versus diseased patients with site-specific inflammatory conditions, a complex consortium of microbial communities inhabits the upper airway. Fluctuations in the baseline microbiome may contribute to disease pathogenesis, and improved understanding of the dynamics between shifting microbiota may be critical to guiding future medical therapy.
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25
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Hillel AT, Tang SS, Carlos C, Skarlupka JH, Gowda M, Yin LX, Motz K, Currie CR, Suen G, Thibeault SL. Laryngotracheal Microbiota in Adult Laryngotracheal Stenosis. mSphere 2019; 4:e00211-19. [PMID: 31043518 PMCID: PMC6495342 DOI: 10.1128/mspheredirect.00211-19] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 04/03/2019] [Indexed: 12/31/2022] Open
Abstract
Laryngotracheal stenosis is an obstructive respiratory disease that leads to voicing difficulties and dyspnea with potential life-threatening consequences. The majority of incidences are due to iatrogenic etiology from endotracheal tube intubation; however, airway scarring also has idiopathic causes. While recent evidence suggests a microbial contribution to mucosal inflammation, the microbiota associated with different types of stenosis has not been characterized. High-throughput sequencing of the V4 region of the16S rRNA gene was performed to characterize the microbial communities of 61 swab samples from 17 iatrogenic and 10 adult idiopathic stenosis patients. Nonscar swabs from stenosis patients were internal controls, and eight swabs from four patients without stenosis represented external controls. Significant differences in diversity were observed between scar and nonscar samples and among sample sites, with decreased diversity detected in scar samples and the glottis region. Permutational analysis of variance (PERMANOVA) results revealed significant differences in community composition for scar versus nonscar samples, etiology type, sample site, groups (iatrogenic, idiopathic, and internal and external controls), and individual patients. Pairwise Spearman's correlation revealed a strong inverse correlation between Prevotella and Streptococcus among all samples. Finally, bacteria in the family Moraxellaceae were found to be distinctly associated with idiopathic stenosis samples in comparison with external controls. Our findings suggest that specific microbiota and community shifts are present with laryngotracheal stenosis in adults, with members of the family Moraxellaceae, including the known pathogens Moraxella and Acinetobacter, identified in idiopathic scar. Further work is warranted to elucidate the contributing role of bacteria on the pathogenesis of laryngotracheal stenosis.IMPORTANCE The laryngotracheal region resides at the intersection between the heavily studied nasal cavity and lungs; however, examination of the microbiome in chronic inflammatory conditions of the subglottis and trachea remains scarce. To date, studies have focused on the microbiota of the vocal folds, or the glottis, for laryngeal carcinoma, as well as healthy larynges, benign vocal fold lesions, and larynges exposed to smoking and refluxate. In this study, we seek to examine the structure and composition of the microbial community in adult laryngotracheal stenosis of various etiologies. Due to the heterogeneity among the underlying pathogenesis mechanisms and clinical outcomes seen in laryngotracheal stenosis disease, we hypothesized that different microbial profiles will be detected among various stenosis etiology types. Understanding differences in the microbiota for subglottic stenosis subtypes may shed light upon etiology-specific biomarker identification and offer novel insights into management approaches for this debilitating disease.
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Affiliation(s)
- Alexander T Hillel
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sharon S Tang
- Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Camila Carlos
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Joseph H Skarlupka
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Madhu Gowda
- Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Linda X Yin
- Department of Otorhinolaryngology, Mayo Clinic, Rochester, Minnesota, USA
| | - Kevin Motz
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Cameron R Currie
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Garret Suen
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Susan L Thibeault
- Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
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26
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Liu X, Durkes AC, Schrock W, Zheng W, Sivasankar MP. Subacute acrolein exposure to rat larynx in vivo. Laryngoscope 2018; 129:E313-E317. [PMID: 30582162 DOI: 10.1002/lary.27687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/21/2018] [Accepted: 10/22/2018] [Indexed: 12/26/2022]
Abstract
OBJECTIVES/HYPOTHESIS Inhaled pollutants can contact vocal fold tissue and induce detrimental voice changes. Acrolein is a pollutant in cigarette smoke and can also be inhaled during the combustion of fossil fuels, animal fats, and plastics in the environment. However, the vocal fold pathological changes induced by acrolein and the underlying inflammatory pathways are not well understood. These biologic data are needed to understand why voice problems may result from pollutant exposure. STUDY DESIGN In vivo prospective design with experimental and control groups. METHODS Sprague-Dawley male rats (N = 36) were exposed to acrolein (3 ppm) or filtered air (control) through a whole-body exposure system for 5 hours/day, for 5 days/week, over 4 weeks. Histopathological changes, presence of edema, expression of proinflammatory cytokines and markers, and the phosphorylation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) were investigated. RESULTS Histological evaluation and quantification demonstrated that subacute acrolein exposure induced significant vocal fold edema. Acrolein exposure also induced epithelial sloughing and cell death. Quantitative polymerase chain reaction showed a significant upregulation of genes encoding interferon regulatory factor and chitinase-3-like protein 3. Western blot revealed a 76.8% increase in phosphorylation of NF-κB P65 after subacute acrolein exposure. CONCLUSIONS These findings suggest that 4-week exposures to 3 ppm acrolein induce vocal fold inflammation manifested as edema, related to the activation of NF-κB signaling. The edema may underlie the voice changes reported in speakers exposed to pollutants. LEVEL OF EVIDENCE NA Laryngoscope, 129:E313-E317, 2019.
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Affiliation(s)
- Xinxin Liu
- School of Health Sciences, Purdue University, West Lafayette, Indiana, U.S.A.,Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, Indiana, U.S.A
| | - Abigail C Durkes
- Department of Comparative Pathobiology, Purdue University, West Lafayette, Indiana, U.S.A
| | - William Schrock
- School of Health Sciences, Purdue University, West Lafayette, Indiana, U.S.A
| | - Wei Zheng
- School of Health Sciences, Purdue University, West Lafayette, Indiana, U.S.A
| | - M Preeti Sivasankar
- Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, Indiana, U.S.A
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27
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Lopez-Oliva I, Paropkari AD, Saraswat S, Serban S, Yonel Z, Sharma P, de Pablo P, Raza K, Filer A, Chapple I, Dietrich T, Grant MM, Kumar PS. Dysbiotic Subgingival Microbial Communities in Periodontally Healthy Patients With Rheumatoid Arthritis. Arthritis Rheumatol 2018. [PMID: 29513935 DOI: 10.1002/art.40485] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Studies that demonstrate an association between rheumatoid arthritis (RA) and dysbiotic oral microbiomes are often confounded by the presence of extensive periodontitis in these individuals. This study was undertaken to investigate the role of RA in modulating the periodontal microbiome by comparing periodontally healthy individuals with RA to those without RA. METHODS Subgingival plaque was collected from periodontally healthy individuals (22 with RA and 19 without RA), and the 16S gene was sequenced on an Illumina MiSeq platform. Bacterial biodiversity and co-occurrence patterns were examined using the QIIME and PhyloToAST pipelines. RESULTS The subgingival microbiomes differed significantly between patients with RA and controls based on both community membership and the abundance of lineages, with 41.9% of the community differing in abundance and 19% in membership. In contrast to the sparse and predominantly congeneric co-occurrence networks seen in controls, RA patients revealed a highly connected grid containing a large intergeneric hub anchored by known periodontal pathogens. Predictive metagenomic analysis (PICRUSt) demonstrated that arachidonic acid and ester lipid metabolism pathways might partly explain the robustness of this clustering. As expected from a periodontally healthy cohort, Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans were not significantly different between groups; however, Cryptobacterium curtum, another organism capable of producing large amounts of citrulline, emerged as a robust discriminant of the microbiome in individuals with RA. CONCLUSION Our data demonstrate that the oral microbiome in RA is enriched for inflammophilic and citrulline-producing organisms, which may play a role in the production of autoantigenic citrullinated peptides in RA.
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Affiliation(s)
- Isabel Lopez-Oliva
- The University of Birmingham and Birmingham Dental Hospital, Birmingham Community Healthcare Trust, Birmingham, UK
| | | | | | - Stefan Serban
- The University of Birmingham and Birmingham Dental Hospital, Birmingham Community Healthcare Trust, Birmingham, UK
| | - Zehra Yonel
- The University of Birmingham and Birmingham Dental Hospital, Birmingham Community Healthcare Trust, Birmingham, UK
| | - Praveen Sharma
- The University of Birmingham and Birmingham Dental Hospital, Birmingham Community Healthcare Trust, Birmingham, UK
| | - Paola de Pablo
- NIHR Birmingham Biomedical Research Centre and The University of Birmingham, Birmingham, UK
| | - Karim Raza
- NIHR Birmingham Biomedical Research Centre and The University of Birmingham, Birmingham, UK
| | - Andrew Filer
- NIHR Birmingham Biomedical Research Centre, Birmingham, UK
| | - Iain Chapple
- The University of Birmingham and Birmingham Dental Hospital, Birmingham Community Healthcare Trust, Birmingham, UK
| | - Thomas Dietrich
- The University of Birmingham and Birmingham Dental Hospital, Birmingham Community Healthcare Trust, Birmingham, UK
| | - Melissa M Grant
- The University of Birmingham and Birmingham Dental Hospital, Birmingham Community Healthcare Trust, Birmingham, UK
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28
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Abstract
The microbiome is defined as the total of cellular microorganisms of baczerial, viral or e. g., parasite origin living on the surface of a body. Within the anatomical areas of otorhinolaryngology, a significant divergence and variance can be demonstrated. For ear, nose, throat, larynx and cutis different interactions of microbiome and common factors like age, diet and live style factors (e. g., smoking) have been detected in recent years. Besides, new insights hint at a passible pathognomic role of the microbiome towards diseases in the ENT area. This review article resumes the present findings of this rapidly devloping scientific area.
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Affiliation(s)
- Achim G Beule
- HNO-Uniklinik Münster.,Klinik und Poliklinik für Hals-Nasen-Ohrenkrankheiten der Universitätsmedizin Greifswald
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29
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The lung microbiome. Emerg Top Life Sci 2017; 1:313-324. [PMID: 33525774 DOI: 10.1042/etls20170043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/31/2017] [Accepted: 09/29/2017] [Indexed: 12/17/2022]
Abstract
Historically, our understanding of lung microbiology has relied on insight gained through culture-based diagnostic approaches that employ selective culture conditions to isolate specific pathogens. The relatively recent development of culture-independent microbiota-profiling techniques, particularly 16S rRNA (ribosomal ribonucleic acid) gene amplicon sequencing, has enabled more comprehensive characterisation of the microbial content of respiratory samples. The widespread application of such techniques has led to a fundamental shift in our view of respiratory microbiology. Rather than a sterile lung environment that can become colonised by microbes during infection, it appears that a more nuanced balance exists between what we consider respiratory health and disease, mediated by mechanisms that influence the clearance of microbes from the lungs. Where airway defences are compromised, the ongoing transient exposure of the lower airways to microbes can lead to the establishment of complex microbial communities within the lung. Importantly, the characteristics of these communities, and the manner in which they influence lung pathogenesis, can be very different from those of their constituent members when viewed in isolation. The lung microbiome, a construct that incorporates microbes, their genetic material, and the products of microbial genes, is increasingly central to our understanding of the regulation of respiratory physiology and the processes that underlie lung pathogenesis.
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30
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Durkes A, Sivasankar MP. A Method to Administer Agents to the Larynx in an Awake Large Animal. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2017; 60:3171-3176. [PMID: 29098280 PMCID: PMC5945077 DOI: 10.1044/2017_jslhr-s-17-0040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 04/12/2017] [Accepted: 04/17/2017] [Indexed: 06/07/2023]
Abstract
PURPOSE This research note describes an adapted experimental methodology to administer an exogenous agent to the larynx and upper airway of awake animals. The exogenous agent could be a perturbation. In the current study, the agent was isotonic saline. Isotonic saline was selected because it is safe, of similar composition to extracellular fluid, and used in voice studies. The described approach allowed large animals such as pigs to be comfortably restrained without chemical sedation or anesthesia for extended periods while receiving the agent. METHOD Six Sinclair pigs were successfully trained with positive reinforcement to voluntarily enter and then be restrained in a Panepinto Sling. Once restrained, the pigs accepted a nose cone that delivered nebulized isotonic saline. This procedure was repeated 3 times per day for 20 days. At the end of the study, the larynx and airway tissues were excised and examined using histology and transmission electron microscopy. RESULTS Pathology related to the procedure (i.e., nebulized inhaled isotonic saline or stress) was not identified in any examined tissues. CONCLUSIONS This methodology allowed for repeated application of exogenous agents to awake, unstressed animals. This method can be used repeatedly in the laboratory to test various therapeutics for safety, toxicity, and dosage. Future studies will specifically manipulate the type of agent to further our understanding of laryngeal pathobiology.
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Affiliation(s)
- Abigail Durkes
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN
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31
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Composition and abundance of microbiota in the pharynx in patients with laryngeal carcinoma and vocal cord polyps. J Microbiol 2017; 55:648-654. [PMID: 28752291 DOI: 10.1007/s12275-017-6636-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 07/13/2017] [Accepted: 07/13/2017] [Indexed: 12/18/2022]
Abstract
The pharynx is an important site of microbiota colonization, but the bacterial populations at this site have been relatively unexplored by culture-independent approaches. The aim of this study was to characterize the microbiota structure of the pharynx. Pyrosequencing of 16S rRNA gene libraries was used to characterize the pharyngeal microbiota using swab samples from 68 subjects with laryngeal cancer and 28 subjects with vocal cord polyps. Overall, the major phylum was Firmicutes, with Streptococcus as the predominant genus in the pharyngeal communities. Nine core operational taxonomic units detected from Streptococcus, Fusobacterium, Prevotella, Granulicatella, and Veillonella accounted for 21.3% of the total sequences detected. However, there was no difference in bacterial communities in the pharynx from patients with laryngeal cancer and vocal cord polyps. The relative abundance of Firmicutes was inversely correlated with Fusobacteria, Proteobacteria, Actinobacteria, and Bacteroidetes. The correlation was evident at the genus level, and the relative abundance of Streptococcus was inversely associated with Fusobacterium, Leptotrichia, Neisseria, Actinomyces, and Prevotella. This study presented a profile for the overall structure of the microbiota in pharyngeal swab samples. Inverse correlations were found between Streptococcus and other bacterial communities, suggesting that potential antagonism may exist among pharyngeal microbiota.
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32
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Gong H, Shi Y, Xiao X, Cao P, Wu C, Tao L, Hou D, Wang Y, Zhou L. Alterations of microbiota structure in the larynx relevant to laryngeal carcinoma. Sci Rep 2017; 7:5507. [PMID: 28710395 PMCID: PMC5511217 DOI: 10.1038/s41598-017-05576-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 05/31/2017] [Indexed: 02/07/2023] Open
Abstract
The microbial communities that inhabit the laryngeal mucosa build stable microenvironments and have the potential to influence the health of the human throat. However, the associations between the microbiota structure and laryngeal carcinoma remain uncertain. Here, we explored this question by comparing the laryngeal microbiota structure in laryngeal cancer patients with that in control subjects with vocal cord polyps through high-throughput pyrosequencing. Overall, the genera Streptococcus, Fusobacterium, and Prevotella were prevalent bacterial populations in the laryngeal niche. Tumor tissue samples and normal tissues adjacent to the tumor sites (NATs) were collected from 31 laryngeal cancer patients, and the bacterial communities in laryngeal cancer patients were compared with control samples from 32 subjects. A comparison of the laryngeal communities in the tumor tissues and the NATs showed higher α-diversity in cancer patients than in control subjects, and the relative abundances of seven bacterial genera differed among the three groups of samples. Furthermore, the relative abundances of ten bacterial genera in laryngeal cancer patients differed substantially from those in control subjects. These findings indicate that the laryngeal microbiota profiles are altered in laryngeal cancer patients, suggesting that a disturbance of the microbiota structure might be relevant to laryngeal cancer.
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Affiliation(s)
- Hongli Gong
- Shanghai Key Clinical Disciplines of Otorhinolaryngology, Department of Otorhinolaryngology, Eye, Ear, Nose, and Throat Hospital of Fudan University, 83 Fenyang Road, Shanghai, 200031, China
| | - Yi Shi
- Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 2800 Gongwei Road, Shanghai, 201399, China.
| | - Xiyan Xiao
- Shanghai Key Clinical Disciplines of Otorhinolaryngology, Department of Otorhinolaryngology, Eye, Ear, Nose, and Throat Hospital of Fudan University, 83 Fenyang Road, Shanghai, 200031, China
| | - Pengyu Cao
- Shanghai Key Clinical Disciplines of Otorhinolaryngology, Department of Otorhinolaryngology, Eye, Ear, Nose, and Throat Hospital of Fudan University, 83 Fenyang Road, Shanghai, 200031, China
| | - Chunping Wu
- Shanghai Key Clinical Disciplines of Otorhinolaryngology, Department of Otorhinolaryngology, Eye, Ear, Nose, and Throat Hospital of Fudan University, 83 Fenyang Road, Shanghai, 200031, China
| | - Lei Tao
- Shanghai Key Clinical Disciplines of Otorhinolaryngology, Department of Otorhinolaryngology, Eye, Ear, Nose, and Throat Hospital of Fudan University, 83 Fenyang Road, Shanghai, 200031, China
| | - Dongsheng Hou
- Shanghai Key Laboratory for Reproductive Medicine, Department of Histology and Embryology, Shanghai Jiao Tong University School of Medicine, 280 South Chongqing Road, Shanghai, 200025, China
| | - Yuezhu Wang
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Sequencing Centre, 250 Bibo Road, Shanghai, 201203, China
| | - Liang Zhou
- Shanghai Key Clinical Disciplines of Otorhinolaryngology, Department of Otorhinolaryngology, Eye, Ear, Nose, and Throat Hospital of Fudan University, 83 Fenyang Road, Shanghai, 200031, China.
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Hanshew AS, Jetté ME, Tadayon S, Thibeault SL. A comparison of sampling methods for examining the laryngeal microbiome. PLoS One 2017; 12:e0174765. [PMID: 28362810 PMCID: PMC5375147 DOI: 10.1371/journal.pone.0174765] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 03/15/2017] [Indexed: 11/30/2022] Open
Abstract
Shifts in healthy human microbial communities have now been linked to disease in numerous body sites. Noninvasive swabbing remains the sampling technique of choice in most locations; however, it is not well known if this method samples the entire community, or only those members that are easily removed from the surface. We sought to compare the communities found via swabbing and biopsied tissue in true vocal folds, a location that is difficult to sample without causing potential damage and impairment to tissue function. A secondary aim of this study was to determine if swab sampling of the false vocal folds could be used as proxy for true vocal folds. True and false vocal fold mucosal samples (swabbed and biopsied) were collected from six pigs and used for 454 pyrosequencing of the V3–V5 region of the 16S rRNA gene. Most of the alpha and beta measures of diversity were found to be significantly similar between swabbed and biopsied tissue samples. Similarly, the communities found in true and false vocal folds did not differ considerably. These results suggest that samples taken via swabs are sufficient to assess the community, and that samples taken from the false vocal folds may be used as proxies for the true vocal folds. Assessment of these techniques opens an avenue to less traumatic means to explore the role microbes play in the development of diseases of the vocal folds, and perhaps the rest of the respiratory tract.
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Affiliation(s)
- Alissa S Hanshew
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America.,Environmental Health and Safety, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Marie E Jetté
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America.,Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado, United States of America
| | - Stephanie Tadayon
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Susan L Thibeault
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
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34
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Hanshew AS, Jetté ME, Rosen SP, Thibeault SL. Integrating the microbiota of the respiratory tract with the unified airway model. Respir Med 2017; 126:68-74. [PMID: 28427552 DOI: 10.1016/j.rmed.2017.03.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 02/26/2017] [Accepted: 03/21/2017] [Indexed: 12/30/2022]
Abstract
The unified airway model has developed from indications that the upper and lower respiratory tracts share key elements of pathogenesis. These shared traits likely extend to similar niche characteristics that support bacterial communities, and as such, we suspect that similar microbes exist on upper and lower respiratory tract epithelium. Over the past decade and a half there have been significant improvements in microbiological identification and analysis due to the development of new molecular technologies, including next-generation sequencing. In this review, we provide an overview of the modern collection and sequencing methods involved in respiratory microbiota research, and outline the specific microbial communities that have been found to be associated with the healthy and diseased human respiratory tract. Demonstration of a remarkable similarity between the upper and lower respiratory tract in terms of microbiological presence adds further corroboration to the existence of a unified airway.
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Affiliation(s)
- Alissa S Hanshew
- Environmental Health and Safety, 6 Eisenhower Parking Deck, The Pennsylvania State University, University Park, PA, USA.
| | - Marie E Jetté
- Department of Otolaryngology, University of Colorado, 12631 E. 17th Avenue, Aurora, CO, USA.
| | - Sarah P Rosen
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin-Madison, 600 Highland Avenue, Madison, WI, USA.
| | - Susan L Thibeault
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin-Madison, 600 Highland Avenue, Madison, WI, USA.
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35
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Thomas CM, Jetté ME, Clary MS. Factors Associated With Infectious Laryngitis: A Retrospective Review of 15 Cases. Ann Otol Rhinol Laryngol 2017; 126:388-395. [PMID: 28397557 DOI: 10.1177/0003489417694911] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES To identify the culturable microbes associated with infectious laryngitis and outline effective treatment strategies. METHODS This is a retrospective chart review of adult patients with persistent dysphonia plus evidence of laryngeal inflammation who underwent biopsy for culture at a tertiary care medical center. Demographic factors, symptoms as reported on validated patient assessment tools, past medical history, social history, culture results, and treatment duration and response were reviewed. RESULTS Fifteen patients with infectious laryngitis were included in this study. Culture results demonstrated Methicillin-sensitive Staphylococcus aureus (MSSA), Methicillin-resistant Staphylococcus aureus (MRSA), Pseudomonas aeruginosa, Serratia marcescens, and "normal respiratory flora." In most patients, multiple courses of prolonged antibiotics were needed to treat MSSA or MRSA. Infections associated with other microbes resolved with a single course of antibiotics. CONCLUSIONS In this population, infectious laryngitis is defined as colonization with bacteria not found in the previously characterized laryngeal microbiome of benign vocal fold lesions. In suspected cases of infectious laryngitis, culture is recommended, by biopsy if needed. For MSSA- and MRSA-associated laryngitis, an extended course of antibiotics may be necessary for symptom improvement and resolution of laryngeal inflammation. However, the optimal treatment regimen has yet to be defined and will require larger, prospective studies.
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Affiliation(s)
- Carissa M Thomas
- 1 Department of Otolaryngology-Head and Neck Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Marie E Jetté
- 1 Department of Otolaryngology-Head and Neck Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Matthew S Clary
- 1 Department of Otolaryngology-Head and Neck Surgery, University of Colorado School of Medicine, Aurora, CO, USA
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