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Dekeyser A, Huart C, Hummel T, Hox V. Olfactory Loss in Rhinosinusitis: Mechanisms of Loss and Recovery. Int J Mol Sci 2024; 25:4460. [PMID: 38674045 PMCID: PMC11050448 DOI: 10.3390/ijms25084460] [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: 03/25/2024] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Chronic rhinosinusitis (CRS) is a highly prevalent disease and up to 83% of CRS patients suffer from olfactory dysfunction (OD). Because OD is specifically seen in those CRS patients that present with a type 2 eosinophilic inflammation, it is believed that type 2 inflammatory mediators at the level of the olfactory epithelium are involved in the development of this olfactory loss. However, due to the difficulties in obtaining tissue from the olfactory epithelium, little is known about the true mechanisms of inflammatory OD. Thanks to the COVID-19 pandemic, interest in olfaction has been growing rapidly and several studies have been focusing on disease mechanisms of OD in inflammatory conditions. In this paper, we summarize the most recent data exploring the pathophysiological mechanisms underlying OD in CRS. We also review what is known about the potential capacity of olfactory recovery of the currently available treatments in those patients.
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Affiliation(s)
- Agnès Dekeyser
- Laboratory of Pneumology, ENT (Airways) and Dermatology (Skin) (LUNS), Institute of Experimental and Clinical Research (IREC), UCLouvain, 1200 Brussels, Belgium; (A.D.); (C.H.)
| | - Caroline Huart
- Laboratory of Pneumology, ENT (Airways) and Dermatology (Skin) (LUNS), Institute of Experimental and Clinical Research (IREC), UCLouvain, 1200 Brussels, Belgium; (A.D.); (C.H.)
- Department of Otorhinolaryngology, Head and Neck Surgery, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| | - Thomas Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany;
| | - Valérie Hox
- Laboratory of Pneumology, ENT (Airways) and Dermatology (Skin) (LUNS), Institute of Experimental and Clinical Research (IREC), UCLouvain, 1200 Brussels, Belgium; (A.D.); (C.H.)
- Department of Otorhinolaryngology, Head and Neck Surgery, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
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Jang SS, Pak KS, Strom A, Gomez L, Kim K, Doherty TA, DeConde AS, Ryan AF, Yan CH. Pro-inflammatory markers associated with COVID-19-related persistent olfactory dysfunction. Int Forum Allergy Rhinol 2024; 14:786-793. [PMID: 37676246 PMCID: PMC10918027 DOI: 10.1002/alr.23264] [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: 04/08/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/08/2023]
Abstract
INTRODUCTION While localized inflammation has been implicated in the pathophysiology of acute coronavirus disease of 2019 (COVID-19) olfactory dysfunction (OD), persistent COVID-19 OD remains poorly understood with limited therapeutics. Our prospective study evaluated olfactory cleft (OC) biomarkers as predictors of persistent OD in mucus sampling. METHODS COVID-19 subjects with persistent OD >3 months confirmed by psychophysical olfaction tests were compared to COVID-19 subjects with no OD and those with no prior infection. OC mucus samples were evaluated for 13 anti-viral and inflammatory biomarkers. Cohorts were compared using analysis of variance (ANOVA) and Mann-Whitney tests with multi-comparison adjustment. Viral RNA was assessed through RT-PCR using the COVID-19 N2 primer. RESULTS Thirty-five samples were collected (20 COVID persistent OD, 8 COVID no OD, and 7 non-COVID no OD). Significant differences in IFN-λ1 (p = 0.007) and IFN-γ (p = 0.006) expression in OC mucus were found across all three groups, with the highest cytokine concentrations corresponding to COVID OD. IFN-α2 levels were elevated in COVID OD versus no OD (p = 0.026). Mean IFN-γ levels were the highest in COVID OD, but there were higher levels found in COVID no OD compared to non-COVID no OD (p = 0.008). No difference was seen in IL6. No N2 gene expression was detected in all cohorts. CONCLUSION IFN pathway cytokines were found elevated in the olfactory microenvironment of COVID-19 persistent OD compared to those with no OD and no prior history of COVID-19 infection.
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Affiliation(s)
- Sophie S Jang
- Department of Otolaryngology, Head and Neck Surgery, University of California San Diego, La Jolla, California, USA
| | - Kwang S Pak
- Department of Otolaryngology, Head and Neck Surgery, University of California San Diego, La Jolla, California, USA
| | - Allyssa Strom
- Division of Rheumatology, Allergy & Immunology, University of California San Diego, La Jolla, California, USA
| | - Leslie Gomez
- Department of Otolaryngology, Head and Neck Surgery, University of California San Diego, La Jolla, California, USA
| | - Kyubo Kim
- Department of Otolaryngology, Head and Neck Surgery, University of California San Diego, La Jolla, California, USA
| | - Taylor A Doherty
- Division of Rheumatology, Allergy & Immunology, University of California San Diego, La Jolla, California, USA
| | - Adam S DeConde
- Department of Otolaryngology, Head and Neck Surgery, University of California San Diego, La Jolla, California, USA
| | - Allen F Ryan
- Department of Otolaryngology, Head and Neck Surgery, University of California San Diego, La Jolla, California, USA
| | - Carol H Yan
- Department of Otolaryngology, Head and Neck Surgery, University of California San Diego, La Jolla, California, USA
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陈 靖, 陈 雯, 罗 新, 黄 雪, 张 雅, 杨 钦. [Artificial intelligence-assisted prediction of olfactory disorders in patients with chronic rhinosinusitis]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2023; 37:871-877;885. [PMID: 38114440 PMCID: PMC10985657 DOI: 10.13201/j.issn.2096-7993.2023.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Indexed: 12/21/2023]
Abstract
Objective:To analyze the influencing factors and perform the prediction of olfactory disorders in patients with chronic rhinosinusitis(CRS) based on artificial intelligence. Methods:The data of 75 patients with CRS who underwent nasal endoscopic surgery from October 2021 to February 2023 in the Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University were analyzed retrospectively. There were 53 males and 22 females enrolled in the study, with a median age of 42.0 years old. The CRS intelligent microscope interpretation system was used to calculate the proportion of area glands and blood vessels occupy in the pathological sections of each patient, and the absolute value and proportion of eosinophils, lymphocytes, plasma cells and neutrophils. The patients were grouped according to the results of the Sniffin' Sticks smell test, and the clinical baseline data, differences in nasal mucosal histopathological characteristics, laboratory test indicators and sinus CT were compared between the groups. Determine the independent influencing factors of olfactory disorders and receiver operating characteristic curves(ROC) were used to evaluate the performance of the prediction model. Statistical analysis was performed using SPSS 25.0 software. Results:Among the 75 CRS patients, 25 cases(33.3%) had normal olfaction and 50 cases(66.7%) had olfactory disorders. Multivariate Logistic regression analysis showed that tissue eosinophils percentage(OR=1.032, 95%CI 1.002-1.064, P=0.036), Questionnaire of olfactory disorders-Negative statement(QOD-NS)(OR=1.079, 95%CI 1.004-1.160, P=0.040) and Anterior olfactory cleft score(AOCS)(OR=2.672, 95%CI 1.480-4.827, P=0.001) were independent risk factors for olfactory disorders in CRS patients. Further research found that the area under the ROC curve(AUC) of the combined prediction model established by the tissue eosinophil percentage, QOD-NS and AOCS was 0.836(95%CI 0.748-0.924, P<0.001), which is better than the above single factor prediction model in predicting olfactory disorders in CRS. Conclusion:Based on pathological artificial intelligence, tissue eosinophil percentage, QOD-NS and AOCS are independent risk factors for olfactory disorders in CRS patients, and the combination of the three factors has a good predictive effect on CRS olfactory disorders.
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Affiliation(s)
- 靖媛 陈
- 中山大学附属第三医院耳鼻咽喉头颈外科(广州,510630)Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
- 中山大学附属第三医院变态反应科Department of Allergy, the Third Affiliated Hospital of Sun Yat-sen University
| | - 雯仪 陈
- 中山大学附属第三医院耳鼻咽喉头颈外科(广州,510630)Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
- 中山大学附属第三医院变态反应科Department of Allergy, the Third Affiliated Hospital of Sun Yat-sen University
| | - 新 罗
- 中山大学附属第三医院耳鼻咽喉头颈外科(广州,510630)Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
- 中山大学附属第三医院变态反应科Department of Allergy, the Third Affiliated Hospital of Sun Yat-sen University
| | - 雪琨 黄
- 中山大学附属第三医院耳鼻咽喉头颈外科(广州,510630)Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
- 中山大学附属第三医院变态反应科Department of Allergy, the Third Affiliated Hospital of Sun Yat-sen University
| | - 雅娜 张
- 中山大学附属第三医院耳鼻咽喉头颈外科(广州,510630)Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
- 中山大学附属第三医院变态反应科Department of Allergy, the Third Affiliated Hospital of Sun Yat-sen University
| | - 钦泰 杨
- 中山大学附属第三医院耳鼻咽喉头颈外科(广州,510630)Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
- 中山大学附属第三医院变态反应科Department of Allergy, the Third Affiliated Hospital of Sun Yat-sen University
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Guo S, Tian M, Fan Y, Zhang X. Recent advances in mass spectrometry-based proteomics and metabolomics in chronic rhinosinusitis with nasal polyps. Front Immunol 2023; 14:1267194. [PMID: 37744372 PMCID: PMC10511644 DOI: 10.3389/fimmu.2023.1267194] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 08/15/2023] [Indexed: 09/26/2023] Open
Abstract
Chronic rhinosinusitis with nasal polyps (CRSwNP) is a complex and heterogeneous disease, typically diagnosed through endoscopy and computed tomography and treated with glucocorticoid or surgery. There is an urgent need to develop molecular-level diagnostic or prognostic tools to better understand the pathophysiology of CRSwNP. Proteomics and metabolomics, emerging fields, offer significant potential in elucidating the mechanisms underlying CRSwNP. Mass spectrometry, a powerful and sensitive tool for trace substance detection, is broadly applied for proteomics and metabolomics analysis in CRSwNP research. While previous literature has summarized the advancement of mass spectrometry-based CRSwNP proteomics from 2004 to 2018, recent years have seen new advances in this field, particularly about non-invasive samples and exosomes. Furthermore, mass spectrometry-based CRSwNP metabolomics research has opened new avenues for inquiry. Therefore, we present a comprehensive review of mass spectrometry-based proteomics and metabolomics studies on CRSwNP conducted between 2019 and 2022. Specifically, we highlight protein and metabolic biomarkers that have been utilized as diagnostic or prognostic markers for CRSwNP. Lastly, we conclude with potential directions for future mass spectrometry-based omics studies of CRSwNP.
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Affiliation(s)
- Shudi Guo
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Ming Tian
- Department of Otolaryngology, The 7th Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Yunping Fan
- Department of Otolaryngology, The 7th Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Xiangyang Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
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Smith KA, Gill AS, Pollard CE, Sumsion JS, Saffari H, Ashby S, Witt BL, Shipman PA, Gabrielsen DA, Yim MT, Levy JM, Oakley GM, Orlandi RR, Gleich GJ, Alt JA, Pulsipher A. An eosinophil peroxidase activity assay accurately predicts eosinophilic chronic rhinosinusitis. J Allergy Clin Immunol 2023; 152:400-407. [PMID: 37148919 PMCID: PMC10524284 DOI: 10.1016/j.jaci.2023.04.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 04/14/2023] [Accepted: 04/27/2023] [Indexed: 05/08/2023]
Abstract
BACKGROUND A definitive diagnosis of eosinophilic chronic rhinosinusitis (eCRS) requires invasive surgical tissue sampling and histologic enumeration of intact eosinophils. Eosinophil peroxidase (EPX) is an accurate biomarker of sinonasal tissue eosinophilia in CRS regardless of polyp status. A less invasive and rapid method that accurately identifies tissue eosinophilia would be of great benefit to patients. OBJECTIVE We sought to evaluate a new clinical tool that uses a nasal swab and colorimetric EPX activity assay to predict a diagnosis of eCRS. METHODS A prospective, observational cohort study was conducted using nasal swabs and sinonasal tissue biopsies obtained from patients with CRS electing endoscopic sinus surgery. Patients were classified as non-eCRS (n = 19) and eCRS (n = 35) on the basis of pathologically determined eosinophil counts of less than 10 or greater than or equal to 10 eosinophils/HPF, respectively. Swab-deposited EPX activity was measured and compared with tissue eosinophil counts, EPX levels, and CRS-specific disease metrics. RESULTS EPX activity was significantly increased in patients with eCRS than in patients without eCRS (P < .0001). With a relative absorbance unit cutoff value of greater than or equal to 0.80, the assay demonstrated high sensitivity (85.7%) and moderate specificity (79.0%) for confirming eCRS. Spearman correlations between EPX activity and tissue eosinophil counts (rs = 0.424), EPX levels (rs = 0.503), and Lund-Kennedy endoscopy scores (rs = 0.440) in eCRS were significant (P < .05). CONCLUSIONS This investigation evaluates a nasal swab sampling method and EPX activity assay that accurately confirms eCRS. This method could potentially address the unmet need to identify sinonasal tissue eosinophilia at the point-of-care, as well as to longitudinally monitor eosinophil activity and treatment response.
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Affiliation(s)
- Kristine A Smith
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Amarbir S Gill
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Chelsea E Pollard
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Jorgen S Sumsion
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Hedieh Saffari
- Department of Dermatology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Shaelene Ashby
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Benjamin L Witt
- Cytopathology Section, University of Utah School of Medicine, Salt Lake City, Utah
| | - Paige A Shipman
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah
| | - David A Gabrielsen
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Michael T Yim
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah; Department of Otolaryngology-Head and Neck Surgery, Louisiana State University Shreveport, Shreveport, La
| | - Joshua M Levy
- Department of Otolaryngology-Head and Neck Surgery, Emory University School of Medicine, Atlanta, Ga
| | - Gretchen M Oakley
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Richard R Orlandi
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Gerald J Gleich
- Department of Dermatology, University of Utah School of Medicine, Salt Lake City, Utah; Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Jeremiah A Alt
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah; Department of Molecular Pharmaceutics, University of Utah College of Pharmacy, Salt Lake City, Utah; Utah Center for Nanomedicine, University of Utah, Salt Lake City, Utah.
| | - Abigail Pulsipher
- Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology, University of Utah School of Medicine, Salt Lake City, Utah; Department of Molecular Pharmaceutics, University of Utah College of Pharmacy, Salt Lake City, Utah; Utah Center for Nanomedicine, University of Utah, Salt Lake City, Utah.
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Pesold VV, Wendler O, Morgenthaler L, Gröhn F, Mueller SK. Analysis of CRSsNP Proteome Using a Highly Multiplexed Approach in Nasal Mucus. Am J Rhinol Allergy 2022; 37:348-359. [PMID: 36341722 DOI: 10.1177/19458924221136651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Chronic rhinosinusitis without nasal polyps (CRSsNP) represents a phenotype of CRS, whose immunological mechanisms are still unclear. So far there are neither suitable biomarkers to determine the course of the disease nor an individual therapy. OBJECTIVE The purpose of this study was to characterize the CRSsNP endotype by identifying and validating non-invasive proteomic biomarkers. METHODS A highly-multiplexed proteomic array consisting of antibodies against 2000 proteins was used to identify proteins that are differentially expressed in the nasal mucus of the CRSsNP and control groups (n = 7 per group). The proteins identified to be most differentially expressed were validated in matched nasal mucus samples using western blots and enzyme-linked immunosorbent assay (ELISA). Validation was also done in a second cohort using western blots (CRSsNP n = 25, control n = 23) and ELISA (n = 30 per group). Additionally, immunohistochemistry in CRSsNP and control tissue samples was performed to characterize the selected proteins further. RESULTS Out of the 2000 proteins examined, 7 from the most differentially expressed proteins were chosen to be validated. The validation results showed that 4 proteins were significantly upregulated in CRSsNP mucus, including macrophage inflammatory protein-1beta (MIP-1β), resistin, high mobility group box 1 (HMGB1), and forkhead box protein 3 (FOXP3). Cartilage acidic protein 1 (CRTAC1) was not significantly upregulated. Two proteins were significantly downregulated including scavenger receptor class F member 2 (SCARF2) and P-selectin. All proteins selected are mainly associated with inflammation, cell proliferation/differentiation, apoptosis and cell-cell or cell-matrix interaction. CONCLUSION Proteomic analysis of CRSsNP and control mucus has confirmed known and revealed novel disease-associated proteins that could potentially serve as a new biosignature for CRSsNP. Analysis of the associated pathways will specify endotypes of CRSsNP and will lead to an improved understanding of the pathophysiology of CRSsNP. Furthermore, our data contribute to the development of a reproducible, non-invasive, and quantitative "liquid biopsy" for rhinosinusitis.
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Affiliation(s)
- Vanessa-Vivien Pesold
- Department of Otolaryngology, Head and Neck Surgery, 9171Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Olaf Wendler
- Department of Otolaryngology, Head and Neck Surgery, 9171Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Lisa Morgenthaler
- Department of Otolaryngology, Head and Neck Surgery, 9171Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials, 9171Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Sarina K Mueller
- Department of Otolaryngology, Head and Neck Surgery, 9171Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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靳 晶, 许 昱. [Research progress of biomarkers in nasal secretions in endotypes diagnosis and clinical application of chronic rhinosinusitis]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2022; 36:888-892. [PMID: 36347587 PMCID: PMC10127556 DOI: 10.13201/j.issn.2096-7993.2022.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Indexed: 06/16/2023]
Abstract
With the development of studies on the endotypes of chronic rhinosinusitis (CRS) and the biomarkers of nasal secretions, the studies of CRS endotypes based on nasal secretion have become more abundant. This paper summarizes the endotypes classification of CRS, the collection methods of nasal secretion and the nasal secretion biomarkers related to the endotypes of CRS, in order to provide a reference for establishing the corresponding endotypes of CRS based on the nasal secretion biomarkers.
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Affiliation(s)
- 晶 靳
- 武汉大学人民医院耳鼻咽喉头颈外科(武汉,430060)Department of Otolaryngology Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - 昱 许
- 武汉大学人民医院耳鼻咽喉头颈外科(武汉,430060)Department of Otolaryngology Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
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Rowan NR, Beswick DM. Year in review: 2021 IFAR article summary. Int Forum Allergy Rhinol 2022; 12:979-985. [PMID: 35687752 DOI: 10.1002/alr.23045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 06/06/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Nicholas R Rowan
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Daniel M Beswick
- Department of Head and Neck Surgery, University of California, Los Angeles, Los Angeles, California, USA
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Olfactory Dysfunction in COVID-19: Pathology and Long-Term Implications for Brain Health. Trends Mol Med 2022; 28:781-794. [PMID: 35810128 PMCID: PMC9212891 DOI: 10.1016/j.molmed.2022.06.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 06/09/2022] [Accepted: 06/13/2022] [Indexed: 11/24/2022]
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Ertugrul S, Soylemez E. Explosion in hearing aid demands after Covid-19 outbreak curfew. Eur Arch Otorhinolaryngol 2020; 278:843-844. [PMID: 32737646 PMCID: PMC7394930 DOI: 10.1007/s00405-020-06246-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 07/24/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Suha Ertugrul
- Department of Otorhinolaryngology, Faculty of Medicine, Karabuk University, Karabük, Turkey
| | - Emre Soylemez
- Department of Audiology, Faculty of Health Sciences, Selcuk University, Konya, Turkey.
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Spoldi C, Castellani L, Pipolo C, Maccari A, Lozza P, Scotti A, Pisani A, De Donato G, Portaleone S, Cariati M, Felisati G, Saibene AM. Isolated olfactory cleft involvement in SARS-CoV-2 infection: prevalence and clinical correlates. Eur Arch Otorhinolaryngol 2020; 278:557-560. [PMID: 32577901 PMCID: PMC7309200 DOI: 10.1007/s00405-020-06165-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/20/2020] [Indexed: 11/30/2022]
Abstract
Purpose Smell alterations are a symptom of COVID-19 and have been associated with olfactory cleft mucosal thickening (OCMT). Although their pathogenesis is unclear, evidences link them to viral neuroinvasive potential. This study aims at estimating the prevalence of OCMT in CT scans of COVID-19 patients and investigating its clinical correlates. Methods In a single-institution retrospective cross-sectional study, we included all patients hospitalized for COVID-19 undergoing head CT scan for any reason. Exclusion criteria were history of recent head trauma or chronic rhinosinusitis; opacification > 2 mm in any sinonasal space other than the olfactory cleft; CT performed during/after invasive ventilation or feeding via nasogastric tube. We recorded the prevalence of OCMT and related it to age, sex, need for invasive ventilation during hospital stay, outcome, length of hospital stay, diffusion of lung SARS-CoV-19 lesions and outcome. Results 63 eligible patients were identified (39 male, 24 female; median age 77.82 ± 17.77 years). OCMT was identified in 16 patients (25.4%; 95% CI 15.3–37.9%). Patients with OCMT had longer hospital stays (median 16 ± 4 vs. 9 ± 14.5 days, p = .009, Mann–Whitney U test) and required invasive ventilation more frequently than patients without mucosal thickening (OR 4.89, 95% CI 0.96–24.89, p = .063, Fisher’s test). No other difference was observed. Conclusion OCMT affects nearly one in four patients hospitalized for COVID-19. It is associated with a worse disease course irrespective of age, sex and diffusion of lung lesions, although with no direct effect on survival.
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Affiliation(s)
- Chiara Spoldi
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Luca Castellani
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Carlotta Pipolo
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Alberto Maccari
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Paolo Lozza
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Alberto Scotti
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Antonia Pisani
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Giuseppe De Donato
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Sara Portaleone
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Maurizio Cariati
- Radiology and Interventional Radiology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Giovanni Felisati
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Alberto Maria Saibene
- Otolaryngology Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy.
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