KMID : 1039520200240040191
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Journal of Audiology & Otology 2020 Volume.24 No. 4 p.191 ~ p.197
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Comparison of Autophagy mRNA Expression between Chronic Otitis Media With and Without Cholesteatoma
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Jung Jun-Yang
Jung Su-Young Kim Myung-Gu Kim Young-Il Kim Sang-Hoon Yeo Seung-Geun
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Abstract
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Background and Objectives: Autophagy is known to be associated with pathogen infection. However, the expression of autophagy-related proteins has not been studied in chronic otitis media without cholesteatoma (COM) or with cholesteatoma (CholeOM). This study aimed to determine whether there is a difference between COM and CholeOM in autophagy-related gene mRNA expression.
Subjects and Methods: For 47 patients with chronic otitis media, the inflammatory tissues were classified into granulation tissue (COM) or cholesteatoma (CholeOM) according to biopsy results.
Results: PI3K mRNA expression (COM vs. CholeOM, mean¡¾SD, 0.009¡¾0.010 vs. 0.003¡¾0.004; p=0.004) was lower, whereas Beclin-1 mRNA expression (0.089¡¾0.107 vs. 0.176¡¾0.163; p=0.034) was higher in the CholeOM group. Expression of PI3K mRNA in the CholeOM group was lower than that in the COM subgroups with presence of bacteria (0.022¡¾0.019 vs. 0.001¡¾0.001; p=0.001), otorrhea (0.049¡¾0.068 vs. 0.003¡¾0.004; p=0.004), and hearing loss over 40 dB (0.083¡¾0.130 vs. 0.003¡¾0.004; p=0.005).
Conclusions: The data suggested that different autophagy proteins play important roles in chronic otitis media according to the presence or absence of cholesteatoma.
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KEYWORD
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Autophagy, Otitis media, Cholesteatoma
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