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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: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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Gabrielsen DA, Carney MJ, Weissler JM, Lanni MA, Hernandez J, Sultan LR, Enriquez F, Sehgal CM, Fischer JP, Chauhan A. Application of ARFI-SWV in Stiffness Measurement of the Abdominal Wall Musculature: A Pilot Feasibility Study. Ultrasound Med Biol 2018; 44:1978-1985. [PMID: 29980451 DOI: 10.1016/j.ultrasmedbio.2018.05.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 04/09/2018] [Accepted: 05/03/2018] [Indexed: 06/08/2023]
Abstract
The purpose of this study was to assess the feasibility of acoustic radiation force impulse shear wave velocity and textural features for characterizing abdominal wall musculature and to identify subject-related and technique-related factors that can potentially affect measurements. Median shear wave velocity measurements for the right external abdominal oblique were the same (1.89 ± 0.16 m/s) for both the active group (healthy volunteers with active lifestyles) and the control group (age and body mass index-matched volunteers from an ongoing hernia study). When corrected for thickness, the ratio of right external abdominal oblique shear wave velocity -to-muscle thickness was significantly higher in the control group than in the active volunteers (4.33 s-1 versus 2.88 s-1; p value 0.006). From the textural features studied for right external abdominal oblique, 8 features were found to be statistically different between the active and control groups. In conclusion, shear wave velocity is a feasible and reliable technique to evaluate the stiffness of the abdominal wall musculature. Sonographic texture features add additional characterization of abdominal wall musculature.
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Affiliation(s)
- David A Gabrielsen
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Martin J Carney
- Division of Plastic Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Jason M Weissler
- Division of Plastic Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Michael A Lanni
- Division of Plastic Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Jorge Hernandez
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Laith R Sultan
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - Fabiola Enriquez
- Division of Plastic Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Chandra M Sehgal
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - John P Fischer
- Division of Plastic Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Anil Chauhan
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA.
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Smith KA, Pulsipher A, Gabrielsen DA, Alt JA. Biologics in Chronic Rhinosinusitis: An Update and Thoughts for Future Directions. Am J Rhinol Allergy 2018; 32:412-423. [PMID: 30021447 DOI: 10.1177/1945892418787132] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background Potential biologic therapies for chronic rhinosinusitis (CRS) is a growing field of interest and research. Biologics target specific immune cells or inflammatory pathways within a disease process, increasing drug efficacy while reducing complications. The success of biologics in other inflammatory conditions such as asthma and atopic dermatitis has spurred much of the corresponding research in CRS. A rapid expansion in the volume of research concerning biologic therapies with potential crossover to treating CRS has made it difficult to stay current. Furthermore, much of the literature has been focused on allergy, asthma, and immunology subspecialties. As the role for biologic therapies in CRS continues to expand, it is increasingly important for otolaryngologists to remain up to date on their progression. Objective The objectives of this review are to provide an update on the growing field of biologics for otolaryngologists who treat CRS and discuss potential future areas of research. Methods A literature review of biologic therapies studied in CRS was performed. In addition, a detailed review of all biologic therapies targeting inflammatory markers involved in Th1-, Th2-, and Th17-mediated inflammation was performed to identify potential areas for future research. The role for biologic therapies in CRS, endotypes of CRS, current biologic therapies studies in CRS, and future areas for research were reviewed. Results Sixty-nine unique biologic therapies have been developed for Th1-, Th2-, and Th17-mediated inflammation. Five biologics are currently being investigated for use in patients with CRS with nasal polyposis. Conclusions As the field of biologics continues to expand, remaining up to date on the current literature may help clinicians identify patients who may benefit from biologic therapies. In addition, ongoing research in other inflammatory disorders with shared pathophysiology to CRS may reveal other potential therapies for CRS that have not previously been investigated.
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Affiliation(s)
- Kristine A Smith
- 1 Division of Otolaryngology - Head and Neck Surgery, University of Utah School of Medicine, Salt Lake City, Utah
| | - Abigail Pulsipher
- 1 Division of Otolaryngology - Head and Neck Surgery, University of Utah School of Medicine, Salt Lake City, Utah.,2 GlycoMira Therapeutics, Inc., Salt Lake City, Utah
| | - David A Gabrielsen
- 1 Division of Otolaryngology - Head and Neck Surgery, University of Utah School of Medicine, Salt Lake City, Utah
| | - Jeremiah A Alt
- 1 Division of Otolaryngology - Head and Neck Surgery, University of Utah School of Medicine, Salt Lake City, Utah
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