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Calcium Transport in the Endolymphatic Sac [PDF]
ORL, 1986 Ca++ activity and DC potential were measured in vivo in the endolymphatic sac (ES) of guinea pigs by means of double-barrelled ion-sensitive microelectrodes. We found a positive DC potential of 14 mV and a Ca++ activity of 4.7 X 10(-4) M. Anoxia induced a decrease in the DC potential and an increase in Ca++ activity; however, no negative DC potential ...
O Ninoyu, C Morgenstern
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Neurosurgery, 1995
The endolymphatic sac is part of the membranous labyrinth; it plays an important role in the hearing mechanism. Injury to the endolymphatic sac may, over time, severely compromise hearing. The endolymphatic sac is located in a duplication of the dura of the posterior aspect of the petrous pyramid and is, therefore, in the surgical field of many ...
Ammirati, M +5 more
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The endolymphatic sac is part of the membranous labyrinth; it plays an important role in the hearing mechanism. Injury to the endolymphatic sac may, over time, severely compromise hearing. The endolymphatic sac is located in a duplication of the dura of the posterior aspect of the petrous pyramid and is, therefore, in the surgical field of many ...
Ammirati, M +5 more
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Archives of Otolaryngology - Head and Neck Surgery, 1969
THE SURGICAL treatment of Meniere's disease must be based as far as possible on physiopathological concepts and must take into account all the anatomical and pathological data published to date. Meniere's disease corresponds to an increase in the pressure of the endolymph in comparison with that of the perilymph. It is, therefore, probably conditioned
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THE SURGICAL treatment of Meniere's disease must be based as far as possible on physiopathological concepts and must take into account all the anatomical and pathological data published to date. Meniere's disease corresponds to an increase in the pressure of the endolymph in comparison with that of the perilymph. It is, therefore, probably conditioned
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Presence of Glycosaminoglycans in the Endolymphatic Sac
Acta Oto-Laryngologica, 1997Earlier morphological investigations have revealed that the endolymph, which is present in the endolymphatic sac (ES) seems to differ from that found elsewhere in the labyrinth, in that it contains a stainable substance. Histochemical investigations indicate that this substance is rich in glycosaminoglycans (GAGs).
M. HULTCRANTZ +2 more
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Surgery of the Endolymphatic Sac
Archives of Otolaryngology - Head and Neck Surgery, 1966FOR this lecture in memory of George Morrison Coates, it is fitting to choose a subject that is in the forefront of otosurgical interest. It is easy to forget that in the beginning the operation that revolutionized otologic surgery, the one-stage fenestration operation, was vigorously opposed by nearly all of the leaders in otology. Dr.
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The endolymphatic sac: Anatomical considerations
The Laryngoscope, 1979AbstractSince Portmann suggested surgical drainage of the endolymphatic sac in 1927, several similar procedures have been described. These procedures all share a common problem: the endolymphatic sac must be identified without injuring the labyrinthine structures or the facial nerve.Anson and Donaldson have provided the otologist with a detailed and ...
Richard A. Chole +2 more
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Surgery of the endolymphatic sac
The Laryngoscope, 1981AbstractThe wide variation in reported success rates in endolymphatic sac surgery has been the subject of much controversy in literature. This series is a follow‐up of additional cases done since 1976 that were previously reported with 55% relief of vertigo on relatively long‐term follow‐ups of 24 months to 10 years.
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Experimental Hyperactivity of the Endolymphatic Sac
Audiology and Neurotology, 2013Injury to the endolymphatic sac may play an important role in the pathogenesis of Ménière’s disease, an inner ear disorder characterized by hearing loss, tinnitus and attacks of vertigo. Isoimmunization of 16 inbred Lewis rats with a crude endolymphatic sac extract and complete Freund’s adjuvant induced hyperactivity of the endolymphatic sac. One group
Friis, Morten +3 more
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Effects of amiloride on the endolymphatic sac
The Journal of Laryngology & Otology, 1989AbstractThe effect of amiloride on the murine endolymphatic sac was investigated. The amiloride caused collapse of the lateral intercellular spaces in the endolymphatic sac epithelium and a subsequent mild endolymphatic hydrops. These changes indicated a decreased absorption of endolymph in the endolymphatic sac.
Masaya Takumida, Dan Bagger-Sjöbäck
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Gene expression of the endolymphatic sac
Acta Oto-Laryngologica, 2011The endolymphatic sac is part of the membranous inner ear and is thought to play a role in the fluid homeostasis and immune defense of the inner ear; however, the exact function of the endolymphatic sac is not fully known. Many of the detected mRNAs in this study suggest that the endolymphatic sac has multiple and diverse functions in the inner ear.The
Friis, Morten +6 more
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