In situ real-time sequential potentiometric determinations of potassium concentrations from three cochlear regions in noise-exposed rats.
Double-barrelled potassium selective microelectrodes (K-ISME) were used in situ for real-time sequential determinations of potassium concentrations (CK+) in endolymph, marginal cells and the spiral ligaments of rats exposed to moderate noise at 100 dB for 30 min (NE) and control (CTL) animals. CK+ in NE animals at these sites did not differ significantly when compared to CK+ in CTL animals. However, there was a slight decrease in CK+ in marginal cells in the noise-exposed animals.
Ma
Y L
YL
Department of Anatomy and Cell Biology, University of Florida, Gainesville 32610, USA.
Gerhardt
K J
KJ
Rybak
L P
LP
Curtis
L M
LM
Rarey
K E
KE
D000818:Animals; D001305:Auditory Fatigue / Q000502:physiology*; D003051:Cochlea / Q000503:physiopathology*; D004563:Electrochemistry; D004710:Endolymph / Q000737:chemistry; D006317:Hearing Loss, Noise-Induced / Q000503:physiopathology*; D008839:Microelectrodes; D011188:Potassium / Q000032:analysis*; D011199:Potentiometry / Q000295:instrumentation*; D051381:Rats; D013136:Spiral Ganglion / Q000737:chemistry
D011188:Potassium