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Hara S, Kusunoki T, Nakagawa H, Kamiya K, Toyoda Y, Takata Y, Anzai T, Furukawa M, Okada H, Nakayama T, Ikeda K, Matsumoto F. Impact of Reduced Acidic Earwax pH and Earwax-Determinant Genotypes in Acquired Middle Ear Cholesteatoma. Otolaryngol Head Neck Surg 2024. [PMID: 38953179 DOI: 10.1002/ohn.888] [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: 11/29/2023] [Revised: 04/16/2024] [Accepted: 06/19/2024] [Indexed: 07/03/2024]
Abstract
OBJECTIVE The development of acquired middle ear cholesteatoma is associated with a single nucleotide polymorphism, 538G>A, in the human adenosine triphosphate-binding cassette transporter C11 (ABCC11) gene, which is a determinant of the earwax morphotype, such as wet- and dry-type earwax; however, the mechanism underlying this association is unclear. We focused on the earwax pH and aimed to elucidate the mechanism between ABCC11 genotypes and acquired middle ear cholesteatoma. STUDY DESIGN Prospective observational study. SETTING Single-center, academic hospital. METHODS We recruited 40 patients with acquired middle ear cholesteatoma who underwent surgery and 115 controls with no history of middle ear cholesteatoma. We assessed the earwax pH and ABCC11 genotypes in all participants. Clinical information was collected from the patients with cholesteatoma. RESULTS The earwax pH was significantly less acidic in patients with cholesteatoma and those carrying wet earwax genotypes (ABCC11 538G/G or 538G/A) than in the controls and those carrying the dry earwax genotype (ABCC11 538A/A), respectively. Furthermore, earwax pH was significantly positively correlated with high preoperative cholesteatoma stages in the patients with cholesteatoma. CONCLUSION Our results show that the less acidic earwax pH was significantly related to the development and progression of acquired middle ear cholesteatoma. The less acidic earwax pH may play an important role in the mechanism underlying the association between acquired middle ear cholesteatoma and the ABCC11 gene at site 538.
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Affiliation(s)
- Satoshi Hara
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- International Collaborative Research Administration, Juntendo University, Tokyo, Japan
| | - Takeshi Kusunoki
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Hiroshi Nakagawa
- Department of Applied Biological Chemistry, Graduate School of Bioscience and Biotechnology, Chubu University, Aichi, Japan
| | - Kazusaku Kamiya
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Yu Toyoda
- Department of Pharmacy, The University of Tokyo Hospital, Tokyo, Japan
| | - Yusuke Takata
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Takashi Anzai
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Masayuki Furukawa
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Hiroko Okada
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Takumi Nakayama
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Katsuhisa Ikeda
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Fumihiko Matsumoto
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Tokyo, Japan
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Gelardi M, Giancaspro R, Landi M, Santoiemma L, Balestra M, Cassano M, Rizzo R. Perspectives of Italian Physicians and Patients in the Treatment of Otitis Externa: A Real-Life Study. J Pers Med 2023; 13:1083. [PMID: 37511695 PMCID: PMC10381888 DOI: 10.3390/jpm13071083] [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: 04/12/2023] [Revised: 06/01/2023] [Accepted: 06/27/2023] [Indexed: 07/30/2023] Open
Abstract
(1) Background: Otitis externa (OE) is a common inflammatory disease of the external ear canal. Given the numerous manifestations of OE, the high rate of recurrence of the disease, as well as the emergence of resistance to antibiotics, therapeutic strategies are numerous and still not well standardized. The aim of this study was to investigate the patient journey of Italian patients suffering from OE, paying greater attention to new therapeutic options. (2) Methods: We conducted a national survey to evaluate the characteristics of patients affected by OE and to analyze the most-prescribed treatments. (3) Results: OE is a common, often relapsing disease that has several clinical manifestations. Prior to observation, the combination of corticosteroids and topical antibiotics was the most common therapeutic strategy. At the time of observation, new liposomal ozone-based preparations were the most-prescribed treatment. (4) Conclusions: This multi-center study investigated key aspects of the OE patient journey, highlighting the growing problem of antibiotic resistance. Restoring a correct ear microbiome is the therapeutic goal. In this context, new liposomal ozone-based drugs represent a promising therapeutic strategy.
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Affiliation(s)
- Matteo Gelardi
- Unit of Otolaryngology, Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
| | - Rossana Giancaspro
- Unit of Otolaryngology, Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
| | - Massimo Landi
- Paediatric National Healthcare System, 10135 Torino, Italy
| | - Luigi Santoiemma
- General Practitioner, Local Health Department Bari, 70026 Modugno, Italy
| | | | - Michele Cassano
- Unit of Otolaryngology, Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
| | - Roberta Rizzo
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
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Kanagamuthu P, Dhanasekaran B, Karthika SR, Raghavan VK. To Determine the PH of External Auditory Canal in Otitis Externa: A Prospective Observational Study in a Tertiary Health Care Centre. Indian J Otolaryngol Head Neck Surg 2023; 75:502-506. [PMID: 37206809 PMCID: PMC10188749 DOI: 10.1007/s12070-023-03591-x] [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: 07/02/2022] [Accepted: 02/16/2023] [Indexed: 03/06/2023] Open
Abstract
Otitis externa is an inflammatory condition of the external auditory canal which occurs due to any trauma, changes in the PH of the skin of external auditory canal. The normal PH of the external auditory canal skin should be in the acidic medium. This inhibits the growth of certain infectious microorganisms. Once the external canal skin PH becomes alkaline, the chances of inflammation of the skin increases. To assess the pH of the external auditory canal in cases of otitis externa with secretion and compare the treatment efficacy of treating it with topical anti-inflammatory like ichthammol glycerine, topical steroid cream and oral antibiotics. A prospective observational study involved a total of 120 patients who came with symptoms and signs of external otitis. pH of external canal was measured during first visit and at 42 days. The patients were divided into three groups. First group was treated with Ichthammol glycerine, second group was treated with Ichthammol glycerine with topical steroid cream and third group was treated with oral antibiotics with topical steroid cream. Patients were analyzed based on severity score during first visit, at 7 days, at 21 days and 42 days. This study involved 64(53.3%) patients were male and 56(46.7%) were females. The mean age group involved in the study was 42.50 years. The mean PH value in the external auditory canal during the first visit was alkaline (6.09) and the mean PH value at 42 days was changed to acidic (4.95) which was statistically significant (p = 0.00). There was significant reduction in the severity score in the oral antibiotic with topical steroid cream, followed by IG with topical steroid cream followed by Ichthammol glycerine (p = 0.001). In this study we have analyzed the pH level favorable in causing otitis externa and the best available treatment for the same. It has been observed that the alkaline Ph is more favorable in causing otitis externa. Efficacy of Topical corticosteroid with antibiotics is maximum in the management of otitis externa.
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Affiliation(s)
- Priya Kanagamuthu
- Present Address: Department of Otorhinolaryngology (ENT), Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chettinad Health City, Rajiv Gandhi Salai, Kelambakkam, 603103 TamilNadu India
| | - Balaji Dhanasekaran
- Present Address: Department of Otorhinolaryngology (ENT), Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chettinad Health City, Rajiv Gandhi Salai, Kelambakkam, 603103 TamilNadu India
| | - S. R. Karthika
- Present Address: Department of Otorhinolaryngology (ENT), Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chettinad Health City, Rajiv Gandhi Salai, Kelambakkam, 603103 TamilNadu India
| | - V. K. Raghavan
- Present Address: Department of Otorhinolaryngology (ENT), Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chettinad Health City, Rajiv Gandhi Salai, Kelambakkam, 603103 TamilNadu India
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Kabadar P, Doddamani SS, Mathri A. A Comparative Study of Antibiotic-steroid Pack with Glycerine Pack in Treatment of Acute Otitis Externa. Indian J Otolaryngol Head Neck Surg 2022; 74:4472-4474. [PMID: 36742937 PMCID: PMC9895600 DOI: 10.1007/s12070-022-03116-y] [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: 12/07/2021] [Accepted: 06/28/2022] [Indexed: 02/07/2023] Open
Abstract
Objective To compare the clinical efficacy of Antibiotic-Steroid pack with Glycerine pack for relieving pain and oedema in cases of acute otitis externa. Study Design A COMPARATIVE STUDY. Setting Tertiary care center ( S.N.Medical college, Bagalkot). Subjects 20 patients clinically diagnosed with acute otitis externa. Results There were 10 patients in antibiotic-steroid pack group and 10 patients in glycerine group. There was female predominance in both the treatment groups and disease was most common in age group 12-20 years. There was no statistical significant decrease in pain and oedema in both the groups. But early reduction in sign and symptoms was noted in antibiotic-steroid group than glycerine group. Conclusions Since the control of pain and edema is more and hence the number of visits is less in steroid-antibiotic packing group, so it is worthwhile to use steroid-antibiotic than glycerine pack.
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Affiliation(s)
- Poornima Kabadar
- Department of ENT, S.Nijalingappa Medical College, Bagalkot, Karnataka India
| | | | - Archana Mathri
- Department of ENT, S.Nijalingappa Medical College, Bagalkot, Karnataka India
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Panzuti P, Mosca M, Fantini O, Noel G, Cappelle J, Pin D. Effect of an ear cleaner instillation containing lipacids in a model of re-acidification of the external auditory canal in dogs. Vet Dermatol 2022; 33:402-406. [PMID: 35791722 PMCID: PMC9543456 DOI: 10.1111/vde.13101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 02/15/2022] [Accepted: 03/10/2022] [Indexed: 11/28/2022]
Abstract
Background In humans, the acidic pH of the ear canal plays a protective role against infection and a change towards alkalinity of the external auditory canal (EAC) is a local factor in the progression of acute to chronic otitis externa (OE). The use of acidic preparations alone for treatment of OE without concurrent antibiotic use is well‐documented in humans. In dogs, only one study has investigated the EAC pH in healthy dogs and in dogs with OE, and investigations to understand the role of EAC pH in the pathogenesis of canine OE are lacking. Hypothesis/objectives To obtain physiological EAC pH values in beagle dogs. To develop a model of re‐acidification of the EAC in dogs and to investigate how an acidic solution may accelerate the return to a physiological pH. Animals Ten healthy beagle dogs in a laboratory setting. Materials and Methods A model of re‐acidification of the EAC was developed by instillation of a pH 10.1 phosphate‐buffered saline (PBS) solution and the subsequent acidic effect of an ear cleaner containing lipacids was evaluated in this model. Results Mean physiological EAC pH was 6.12 (± 0.36). EAC re‐acidification took up to 9 h in this model. Mean pH values dropped immediately to 6.38 (± 0.27) on ears treated with an acidic ear cleaner. No abrupt drop was observed of the mean pH values for the control ears. Conclusion and clinical importance This study confirms that physiological EAC pH in dogs is acidic. This model of re‐acidification of the EAC pH allows investigations on acidic properties of topical ear products in healthy ears. Background – In humans, the acidic pH of the ear canal plays a protective role against infection and a change towards alkalinity of the auditory canal (EAC) is a local factor in the progression of acute to chronic otitis externa (OE). The use of acidic preparations alone for treatment of OE without concurrent antibiotic use is well‐documented in humans. In dogs, only one study has investigated the EAC pH in healthy dogs and in dogs with OE, and investigations to understand the role of EAC pH in the pathogenesis of canine OE are lacking. Hypothesis/objectives –To obtain physiological EAC pH values in beagle dogs. To develop a model of re‐acidification of the EAC in dogs and to investigate how an acidic solution may accelerate the return to a physiological pH. Conclusion and clinical importance – This study confirms that physiological EAC pH in dogs is acidic. This model of re‐acidification of the EAC pH allows investigations on acidic properties of topical ear products in healthy ears.
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Affiliation(s)
| | | | | | - Guillaume Noel
- Biovivo, Institut Claude Bourgelat, VetAgro Sup, Marcy l'Etoile, France
| | - Julien Cappelle
- UMR ASTRE, Université Montpellier, Montpellier, France.,UMR EPIA, INRAE, VetAgro Sup, Marcy l'Etoile, France
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Barrow BE, Alur AA, Kasdan ML, Wilhelmi BJ. Wine, Honey, and Boiling Oil: A Modern Understanding of Ancient Wound Care Practices. Am Surg 2022:31348221078981. [PMID: 35232246 DOI: 10.1177/00031348221078981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The origins of wound care date back to ancient civilizations. From boiling oil to honey to wine, healers and caregivers have adopted a fascinating array of items to cleanse, dress, and bandage wounds over the ages. While wound care practices have developed over time, the physicians and surgeons of ancient times and the Middle Ages helped build the foundation for present-day wound care. A modern scientific understanding of these treatments illustrates why practitioners abandoned some practices while others remain in use today.
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Affiliation(s)
- Brooke E Barrow
- School of Medicine, RinggoldID:5170University of Louisville, Louisville, KY, USA
| | - Abhishek A Alur
- School of Medicine, RinggoldID:5170University of Louisville, Louisville, KY, USA
| | - Morton L Kasdan
- Department of Surgery, RinggoldID:5170University of Louisville, Louisville, KY, USA
| | - Bradon J Wilhelmi
- Department of Surgery, RinggoldID:5170University of Louisville, Louisville, KY, USA
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Prasad SV, Piktel E, Depciuch J, Maximenko A, Suprewicz Ł, Daniluk T, Spałek J, Wnorowska U, M Zielinski P, Parlinska-Wojtan M, B Savage P, Okła S, Fiedoruk K, Bucki R. Targeting bacteria causing otitis media using nanosystems containing nonspherical gold nanoparticles and ceragenins. Nanomedicine (Lond) 2021; 16:2657-2678. [PMID: 34823374 DOI: 10.2217/nnm-2021-0370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Aim: To evaluate the antibacterial and antibiofilm activity of ceragenin-conjugated nonspherical gold nanoparticles against the most common agents of otitis media. Methods: Minimal inhibitory and bactericidal concentrations and colony-counting assays, as well as colorimetric and fluorimetric methods, were used to estimate the antibacterial activity of compounds in phosphate-buffered saline and human cerumen. The nanosystems' biocompatibility and ability to decrease IL-8 release was tested using keratinocyte cells. Results: The tested compounds demonstrated strong antimicrobial activity against planktonic and biofilm cultures at nontoxic doses due to the induction of oxidative stress followed by the damage of bacterial membranes. Conclusion: This study indicates that ceragenin-conjugated nonspherical gold nanoparticles have potential as new treatment methods for eradicating biofilm-forming pathogens associated with otitis media.
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Affiliation(s)
- Suhanya V Prasad
- Department of Medical Microbiology & Nanobiomedical Engineering, Medical University of Bialystok, PL-15222, Bialystok, Poland
| | - Ewelina Piktel
- Department of Medical Microbiology & Nanobiomedical Engineering, Medical University of Bialystok, PL-15222, Bialystok, Poland
| | - Joanna Depciuch
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31342, Krakow, Poland
| | - Alexey Maximenko
- SOLARIS National Synchrotron Radiation Centre, Jagiellonian University, PL-30392, Krakow, Poland
| | - Łukasz Suprewicz
- Department of Medical Microbiology & Nanobiomedical Engineering, Medical University of Bialystok, PL-15222, Bialystok, Poland
| | - Tamara Daniluk
- Department of Medical Microbiology & Nanobiomedical Engineering, Medical University of Bialystok, PL-15222, Bialystok, Poland
| | - Jakub Spałek
- Department of Pathology, Collegium Medicum, Jan Kochanowski University in Kielce, PL-25317, Kielce, Poland.,Department of Otolaryngology, Head & Neck Surgery, Holy Cross Cancer Center in Kielce, PL-25734, Kielce, Poland
| | - Urszula Wnorowska
- Department of Medical Microbiology & Nanobiomedical Engineering, Medical University of Bialystok, PL-15222, Bialystok, Poland
| | - Piotr M Zielinski
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31342, Krakow, Poland
| | | | - Paul B Savage
- Department of Chemistry & Biochemistry, Brigham Young University, Provo, UT 84604, USA
| | - Sławomir Okła
- Department of Otolaryngology, Head & Neck Surgery, Holy Cross Cancer Center in Kielce, PL-25734, Kielce, Poland
| | - Krzysztof Fiedoruk
- Department of Medical Microbiology & Nanobiomedical Engineering, Medical University of Bialystok, PL-15222, Bialystok, Poland
| | - Robert Bucki
- Department of Medical Microbiology & Nanobiomedical Engineering, Medical University of Bialystok, PL-15222, Bialystok, Poland
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Direct interactions with influenza promote bacterial adherence during respiratory infections. Nat Microbiol 2019; 4:1328-1336. [PMID: 31110359 DOI: 10.1038/s41564-019-0447-0] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 04/04/2019] [Indexed: 02/06/2023]
Abstract
Epidemiological observations and animal models have long shown synergy between influenza virus infections and bacterial infections. Influenza virus infection leads to an increase in both the susceptibility to secondary bacterial infections and the severity of the bacterial infections, primarily pneumonias caused by Streptococcus pneumoniae or Staphylococcus aureus. We show that, in addition to the widely described immune modulation and tissue-remodelling mechanisms of bacterial-viral synergy, the virus interacts directly with the bacterial surface. Similar to the recent observation of direct interactions between enteric bacteria and enteric viruses, we observed a direct interaction between influenza virus on the surface of Gram-positive, S. pneumoniae and S. aureus, and Gram-negative, Moraxella catarrhalis and non-typeable Haemophilus influenzae, bacterial colonizers and pathogens in the respiratory tract. Pre-incubation of influenza virus with bacteria, followed by the removal of unbound virus, increased bacterial adherence to respiratory epithelial cells in culture. This result was recapitulated in vivo, with higher bacterial burdens in murine tissues when infected with pneumococci pre-incubated with influenza virus versus control bacteria without virus. These observations support an additional mechanism of bacteria-influenza virus synergy at the earliest steps of pathogenesis.
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Liu X, Li M, Smyth H, Zhang F. Otic drug delivery systems: formulation principles and recent developments. Drug Dev Ind Pharm 2018; 44:1395-1408. [PMID: 29659300 DOI: 10.1080/03639045.2018.1464022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Disorders of the ear severely impact the quality of life of millions of people, but the treatment of these disorders is an ongoing, but often overlooked challenge particularly in terms of formulation design and product development. The prevalence of ear disorders has spurred significant efforts to develop new therapeutic agents, but perhaps less innovation has been applied to new drug delivery systems to improve the efficacy of ear disease treatments. This review provides a brief overview of physiology, major diseases, and current therapies used via the otic route of administration. The primary focuses are on the various administration routes and their formulation principles. The article also presents recent advances in otic drug deliveries as well as potential limitations. Otic drug delivery technology will likely evolve in the next decade and more efficient or specific treatments for ear disease will arise from the development of less invasive drug delivery methods, safe and highly controlled drug delivery systems, and biotechnology targeting therapies.
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Affiliation(s)
- Xu Liu
- a College of Pharmacy , The University of Texas at Austin , Austin , TX , USA
| | - Mingshuang Li
- b Department of Communication Sciences and Disorders , The University of Texas at Austin , Austin , TX , USA
| | - Hugh Smyth
- a College of Pharmacy , The University of Texas at Austin , Austin , TX , USA
| | - Feng Zhang
- a College of Pharmacy , The University of Texas at Austin , Austin , TX , USA
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Prokop-Prigge KA, Thaler E, Wysocki CJ, Preti G. Identification of volatile organic compounds in human cerumen. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 953-954:48-52. [PMID: 24572763 DOI: 10.1016/j.jchromb.2014.01.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 01/23/2014] [Accepted: 01/27/2014] [Indexed: 11/27/2022]
Abstract
We report here the initial examination of volatile organic compounds (VOCs) emanating from human earwax (cerumen). Recent studies link a single nucleotide polymorphism (SNP) in the adenosine triphosphate (ATP) binding cassette, sub-family C, member 11 gene (ABCC11) to the production of different types of axillary odorants and cerumen. ABCC11 encodes an ATP-driven efflux pump protein that plays an important function in ceruminous apocrine glands of the auditory canal and the secretion of axillary odor precursors. The type of cerumen and underarm odor produced by East Asians differ markedly from that produced by non-Asians. In this initial report we find that both groups emit many of the same VOCs but differ significantly in the amounts produced. The principal odorants are volatile organic C2-to-C6 acids. The physical appearance of cerumen from the two groups also matches previously reported ethnic differences, viz., cerumen from East Asians appears dry and white while that from non-Asians is typically wet and yellowish-brown.
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Affiliation(s)
| | - Erica Thaler
- Department of Otorhinolaryngology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Charles J Wysocki
- Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA; School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - George Preti
- Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA; Department of Dermatology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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Role of pH of External Auditory Canal in Acute Otitis Externa. Indian J Otolaryngol Head Neck Surg 2013; 66:86-91. [PMID: 24605308 DOI: 10.1007/s12070-013-0684-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 10/14/2013] [Indexed: 10/26/2022] Open
Abstract
Prospective and interventional. We studied the pH of external auditory canal (EAC) in normal individuals and patients with acute otitis externa (AOE), its variation with change of temperature and humidity, different symptoms and number of symptoms at presentation (Day 0) and various stages of treatment in 100 normal ears and forearms and 50 ears having AOE. The mean pH of normal EAC was 3.950 ± 1.199 while that of forearm was 4.775 ± 0.910. There was increase in the number of patients with increase in relative humidity, however, the change in the pH of EAC was statistically not significant (p > 0.05). Significant fall in pH was observed at 1 and 2 weeks of treatment. The normal EAC pH is relatively more acidic as compared to that of forearm skin and it became more alkaline in cases of AOE with reversion back to acidic pH after treatment. Acidification of the EAC is the only treatment required in most cases. No significant change in pH of ears was observed with changes of temperatures and humidity.
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Dilute vinegar therapy for the management of spontaneous external auditory canal cholesteatoma. Eur Arch Otorhinolaryngol 2011; 269:481-5. [PMID: 21739099 DOI: 10.1007/s00405-011-1676-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Accepted: 06/08/2011] [Indexed: 10/18/2022]
Abstract
The purpose of this study is to evaluate the efficiency of conservative dilute vinegar therapy in the management of spontaneous external auditory canal cholesteatoma (EACC). From 2000 to 2007, 19 patients presented to our clinic with spontaneous EACC. EACC was divided into four grades based on the temporal bone computed tomography: grade I with flattening of bony external canal, grade II with partial destruction of inferior bony canal, grade III with total destruction of inferior bony canal and grade IV with bony destruction into the middle ear and mastoid cavity. Clinical findings and treatment results were recorded. Microscopic local cleansing and dilute vinegar therapy was conducted in the ears with grades I, II and III. Combined mastoid surgery and dilute vinegar therapy was conducted in four ears with stage IV. There were no recurrences after average of 31 months follow-up. Spontaneous EACC can be effectively controlled with dilute vinegar therapy after microscopic local cleansing. However, surgery must be considered in the cases which have involved the mastoid and middle ear. Dilute vinegar therapy in combination with microscopic local cleansing was effective in the management of spontaneous EACC. Dilute vinegar therapy is an easy, cost-effective, and home-based cleansing method to prevent EACC and promotes healing. However, long-term follow-up may reveal frequent recurrence of cholesteatoma debris and involvement of middle ear or mastoid cavity, and then meticulous debridement with skin graft or surgical intervention should be considered.
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Schwaab M, Gurr A, Neumann A, Dazert S, Minovi A. Human antimicrobial proteins in ear wax. Eur J Clin Microbiol Infect Dis 2011; 30:997-1004. [DOI: 10.1007/s10096-011-1185-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Accepted: 01/17/2011] [Indexed: 12/11/2022]
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