Results 171 to 180 of about 9,267 (204)

Calcium gradients in inner ear endolymph

American Journal of Otolaryngology, 1989
Recent studies suggest that endolymphatic hydrops resulting from the ablation of the endolymphatic duct and sac in guinea pigs may be caused by a disturbance of endolymph calcium homeostasis. A similar disturbance of calcium homeostasis could represent the underlying cause of Ménière's disease.
A N, Salt, N, Inamura, R, Thalmann, A, Vora   +3 more
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Cationic changes in endolymph during hypoglycemia

The Laryngoscope, 1972
AbstractExperimentally induced hypoglycemia, using insulin as the hypoglycemic agent, was carried out, using three groups of guinea pigs. The differentiating factor was the time sequence. After the animals had been hypoglycemic for periods of time ranging from one to three hours, the cochlear endolymph.
M, Mendelsohn, J, Roderique
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Source and Role of Endolymph Macromolecules

Acta Oto-Laryngologica, 1999
Evaluation of some 200 endolymph proteins indicates that they are predominantly derived from plasma. However, the profile of endolymph proteins is remarkably similar to that of perilymph and entirely different from that of plasma. This supports the current consensus that perilymph rather than plasma is the (direct) source of endolymph.
R, Thalmann, I, Thalmann
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Fluid Kinetics of Endolymph during Rotation

Acta Oto-Laryngologica, 1990
Rotatory vestibular excitability is discussed on the basis of a fluid-mechanical theory. The principle of this theory, already described for caloric excitation, is that appropriate stimulus causes flows within the endolymph. Experimental and mathematical approaches indicate these flows to be essentially the same in caloric as in rotatory stimulation ...
H W, Pau, W, Limberg
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Endolymph pressure in Meniere's disease

Otolaryngology–Head and Neck Surgery, 1990
During the streptomycin perfusion/shunt of the lateral semicircular duct operation for Meniere's disease, the lateral semicircular duct is exposed by removal of the bone of the lateral semicircular canal. Before perfusion with streptomycin and creation of a shunt in the lateral semicircular duct, the pressure in the lateral semicircular duct is ...
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Effect of furosemide upon endolymph potassium concentration

Hearing Research, 1982
Chinchillas were anesthetized with ketamine (40 mg/kg i.m.) and endocochlear potential (EP) and potassium concentration in endolymph (Ke+) were determined in control animals and in animals injected with various doses of furosemide (25, 50 or 100 mg/kg i.v.) by means of microelectrodes inserted into scala media. Control EP and Ke+ in the chinchilla were
L P, Rybak, T, Morizono
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Longitudinal endolymph movements induced by perilymphatic injections

Hearing Research, 1998
Endolymph movements and endocochlear potential (EP) changes were measured during disturbances of perilymphatic pressure. induced by injecting artificial perilymph into scala tympani (ST) or scala vestibuli (SV) of the guinea pig cochlea. Injections were performed either with or without an outlet made in the opposite perilymphatic scala. Injections into
A N, Salt, J E, DeMott
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Endolymph-Homöostase und M. Menière

HNO, 2008
Endolymph homeostasis and Meniere's disease: fundamentals, pathological changes, aminoglycosides. Although low dose intratympanal gentamicin has empirically been very effective in treating Meniere's disease, the mechanisms of elimination or amelioration of vertigo are still insufficiently understood.
O. Gleich, J. Strutz, K. Schmid
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Ion and water control in cochlear endolymph

American Journal of Otolaryngology, 1982
In mammals cochlear function is intimately dependent on the unique electrolyte concentrat ions and posit ive polar iza t ion of the endolymph. A knowledge of the characterics of the cochlear fluids is important for understanding the physiology of the normal and abnormal cochlea.
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Changes in endolymph chloride concentration following furosemide injection

Hearing Research, 1986
Endocochlear potential (EP) and chloride concentration in endolymph were monitored with microelectrodes in the basal turn of the cochlea of the chinchilla. After intravenous injection of furosemide (25-100 mg/kg), the EP dropped precipitously and rapidly reached its minimum value, however, the chloride activity in endolymph decreased more gradually ...
L P, Rybak, C, Whitworth
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