Fishes can regenerate lateral line and inner ear sensory hair cells that have been lost following exposure to ototoxic antibiotics. However, regenerative capabilities following noise exposure have not been explored in fish. Moreover, nothing is known about the functional relationship between hair cell damage and hearing loss, or the time course of morphological versus functional recovery in fis...

Aminoglycoside antibiotics, like gentamicin, kill inner ear sensory hair cells in a variety of species including chickens, mice, and humans. The zebrafish (Danio rerio) has been used to study hair cell cytotoxicity in the lateral line organs of larval and adult animals. Little is known about whether aminoglycosides kill the hair cells within the inner ear of adult zebrafish. We report here the ...

In this, our second temporal bone installment, we will emphasize the vestibular portion of the labyrinth, that relating to balance and equilibrium. Before proceeding, we must again remind the reader of the basic structure of the labyrinth: an inner membranous labyrinth (endolymphatic) surrounded by an outer osseous labyrinth with an interposed supportive perilymphatic labyrinth. We recommend pe...

Under in vitro conditions, free-standing hair bundles of the bullfrog (Rana catesbeiana) sacculus have exhibited spontaneous oscillations. We used a high-speed complementary metal oxide semiconductor camera to track the active movements of multiple hair cells in a single field of view. Our techniques enabled us to probe for correlations between pairs of cells, and to acquire records on over 100...

Little is known about how hatch phenology (e.g., the start, peak, and duration of hatching) could influence subsequent recruitment of freshwater fishes into a population. We used two commonly sympatric fish species that exhibit different hatching phenologies to examine recruitment across multiple life stages. Nine yellow perch (Perca flavescens) and bluegill (Lepomis macrochirus) annual cohorts...

Laryngocele is an abnormal dilatation of Morgagni ventricle (saccule) in direct communication with the laryngeal lumen. Symptoms are not characteristic: hoarseness, dyspnea, foreign body sensation and cough. Sometimes it is presented as cervical swelling causing airway obstruction and need an emergency tracheotomy. In this paper, we report a case of upper airway obstruction due to laryngocele a...

UNLABELLED Organophosphate toxic agents are used in agriculture and are currently part of the group of toxic agents which can lead to hearing loss, in which we have solvents, metals and asphyxiation agents. AIM To analyze the acute ototoxic action of a group of organophosphate agents in the vestibulo-cochlear system. This is a prospective experimental study. MATERIALS AND METHODS We used ma...