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Ionic composition of endolymph and perilymph in the inner ear of the oyster toadfish, Opsanus tau.
Biol Bull. 2008 Feb; 214(1):83-90.BB

Abstract

The concentrations of free Na+, K+, Ca(+, and Cl(-)in endolymph and perilymph from the inner ear of the oyster toadfish, Opsanus tau, were measured in vivo using double-barreled ion-selective electrodes. Perilymph concentrations were similar to those measured in other species, while endolymph concentrations were similar to those measured previously in elasmobranch fish, though significantly different from concentrations reported in mammals. Perilymph concentrations (mean +/- std. dev.) were as follows: Na+, 129 mmol l(-1) +/- 20; K+, 4.96 mmol l(-1) +/- 2.67; Ca2+, 1.83 mmol l(-1) +/- 0.27; and Cl(-), 171 mmol l(-1) +/- 20. Saccular endolymph concentrations were Na+, 166 mmol l(-1) +/- 22; K+, 51.4 mmol l(-1) +/- 16.7; Ca2+, 2.88 mmol l(-1) +/- 0.27; and Cl(-), 170 mmol l(-1) +/- 12; and semicircular canal (utricular vestibule) endolymph concentrations were Na+, 122 mmol l(-1) +/- 15; K+, 47.7 mmol l(-1) +/- 13.2; Ca2+, 1.78 mmol l(-1) +/- 0.48; Cl(-), 176 mmol l(-1) +/- 27. The relatively high concentrations of Ca2+ and Na+ in the endolymph may have significant implications for the physiological function of the mechanoelectrical transduction channels in the vestibular hair cells of fish compared to those of their mammalian counterparts.

Authors+Show Affiliations

Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, USA. r.rabbitt@utah.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

18258778

Citation

Ghanem, Tamer A., et al. "Ionic Composition of Endolymph and Perilymph in the Inner Ear of the Oyster Toadfish, Opsanus Tau." The Biological Bulletin, vol. 214, no. 1, 2008, pp. 83-90.
Ghanem TA, Breneman KD, Rabbitt RD, et al. Ionic composition of endolymph and perilymph in the inner ear of the oyster toadfish, Opsanus tau. Biol Bull. 2008;214(1):83-90.
Ghanem, T. A., Breneman, K. D., Rabbitt, R. D., & Brown, H. M. (2008). Ionic composition of endolymph and perilymph in the inner ear of the oyster toadfish, Opsanus tau. The Biological Bulletin, 214(1), 83-90.
Ghanem TA, et al. Ionic Composition of Endolymph and Perilymph in the Inner Ear of the Oyster Toadfish, Opsanus Tau. Biol Bull. 2008;214(1):83-90. PubMed PMID: 18258778.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ionic composition of endolymph and perilymph in the inner ear of the oyster toadfish, Opsanus tau. AU - Ghanem,Tamer A, AU - Breneman,Kathryn D, AU - Rabbitt,Richard D, AU - Brown,H Mack, PY - 2008/2/9/pubmed PY - 2008/4/9/medline PY - 2008/2/9/entrez SP - 83 EP - 90 JF - The Biological bulletin JO - Biol. Bull. VL - 214 IS - 1 N2 - The concentrations of free Na+, K+, Ca(+, and Cl(-)in endolymph and perilymph from the inner ear of the oyster toadfish, Opsanus tau, were measured in vivo using double-barreled ion-selective electrodes. Perilymph concentrations were similar to those measured in other species, while endolymph concentrations were similar to those measured previously in elasmobranch fish, though significantly different from concentrations reported in mammals. Perilymph concentrations (mean +/- std. dev.) were as follows: Na+, 129 mmol l(-1) +/- 20; K+, 4.96 mmol l(-1) +/- 2.67; Ca2+, 1.83 mmol l(-1) +/- 0.27; and Cl(-), 171 mmol l(-1) +/- 20. Saccular endolymph concentrations were Na+, 166 mmol l(-1) +/- 22; K+, 51.4 mmol l(-1) +/- 16.7; Ca2+, 2.88 mmol l(-1) +/- 0.27; and Cl(-), 170 mmol l(-1) +/- 12; and semicircular canal (utricular vestibule) endolymph concentrations were Na+, 122 mmol l(-1) +/- 15; K+, 47.7 mmol l(-1) +/- 13.2; Ca2+, 1.78 mmol l(-1) +/- 0.48; Cl(-), 176 mmol l(-1) +/- 27. The relatively high concentrations of Ca2+ and Na+ in the endolymph may have significant implications for the physiological function of the mechanoelectrical transduction channels in the vestibular hair cells of fish compared to those of their mammalian counterparts. SN - 0006-3185 UR - https://www.unboundmedicine.com/medline/citation/18258778/Ionic_composition_of_endolymph_and_perilymph_in_the_inner_ear_of_the_oyster_toadfish_Opsanus_tau_ L2 - https://doi.org/10.2307/25066662 DB - PRIME DP - Unbound Medicine ER -