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Int. J. Mol. Sci. 2017, 18(10), 2164; https://doi.org/10.3390/ijms18102164

A Review: Expression of Aquaporins in Otitis Media

1
Department of Otorhinolaryngology-Head and Neck Surgery, Graduate School, Kyung Hee University, Seoul 130-701, Korea
2
Department of Biochemistry and Molecular Biology, Medical Science and Engineering Research Center for Bioreaction to Reactive Oxygen Species, BK-21, School of Medicine, Kyung Hee University, Seoul 130-701, Korea
3
Medical Science Research Institute, Kyung Hee University Medical Center, Seoul 02447, Korea
*
Author to whom correspondence should be addressed.
Received: 30 September 2017 / Revised: 11 October 2017 / Accepted: 11 October 2017 / Published: 17 October 2017
(This article belongs to the Special Issue Aquaporins: Water Channels Essential for Living Organisms)
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Abstract

Otitis media (OM) refers to inflammatory diseases of the middle ear (ME), regardless of cause or pathological mechanism. Among the molecular biological studies assessing the pathology of OM are investigations of the expression of aquaporins (AQPs) in the ME and Eustachian tube (ET). To date, fifteen studies have evaluated AQPs expression in the ME and ET. Although the expression of individual AQPs varies by species and model, eleven types of AQP, AQP1 to AQP11, were found to be expressed in mammalian ME and ET. The review showed that: (1) various types of AQPs are expressed in the ME and ET; (2) AQP expression may vary by species; and (3) the distribution and levels of expression of AQPs may depend on the presence or absence of inflammation, with variations even in the same species and same tissue. Fluid accumulation in the ME and ET is a common pathological mechanism for all types of OM, causing edema in the tissue and inducing inflammation, thereby possibly involving various AQPs. The expression patterns of several AQPs, especially AQP1, 4 and 5, were found to be altered in response to inflammatory stimuli, including lipopolysaccharide (LPS), suggesting that AQPs may have immunological functions in OM. View Full-Text
Keywords: aquaporin; water channel; transmembrane permeability; human middle ear; otitis media aquaporin; water channel; transmembrane permeability; human middle ear; otitis media
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Jung, S.Y.; Kim, S.S.; Kim, Y.I.; Kim, S.H.; Yeo, S.G. A Review: Expression of Aquaporins in Otitis Media. Int. J. Mol. Sci. 2017, 18, 2164.

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