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[Endolymph homeostasis and Menière's disease: fundamentals, pathological changes, aminoglycosides]

O Gleich1, J Strutz, K Schmid

  • 1HNO-Klinik, Universität Regensburg, Regensburg, Germany. otto.gleich@klinik.uni-regensburg.de

HNO
|November 21, 2008
PubMed

Insights

Low dose intratympanal gentamicin effectively treats Menière

Area of Science:

  • Otolaryngology
  • Neuroscience
  • Inner ear physiology

Context:

  • Menière's disease is characterized by vertigo episodes.
  • Intratympanal gentamicin is an empirical treatment for Menière's disease.
  • The precise mechanisms of gentamicin's therapeutic effects remain unclear.

Purpose:

  • To elucidate the mechanisms by which low-dose intratympanal gentamicin ameliorates vertigo in Menière's disease.
  • To explain the link between endolymph homeostasis disturbances, endolymphatic hydrops, and vestibular nerve activation.

Summary:

  • Disturbances in endolymph homeostasis cause endolymphatic hydrops.
  • This condition leads to potassium ion (K+) leakage from endolymph to perilymph.
  • This ion imbalance results in non-physiological vestibular nerve activation, causing vertigo.

Impact:

  • Provides a mechanistic understanding of gentamicin's efficacy in Menière's disease.
  • Highlights the role of endolymph homeostasis in vertigo pathogenesis.
  • Informs future therapeutic strategies targeting inner ear fluid balance.

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