SINGLE-CHANNEL ANALYSIS OF TETRODOTOXIN-SENSITIVE AND TETRODOTOXIN-RESISTANT SODIUM-CHANNELS IN RAT DORSAL-ROOT GANGLION NEURONS

被引:25
作者
ROY, ML [1 ]
REUVENY, E [1 ]
NARAHASHI, T [1 ]
机构
[1] NORTHWESTERN UNIV, SCH MED, DEPT PHARMACOL, CHICAGO, IL 60611 USA
关键词
DORSAL ROOT GANGLION; TETRODOTOXIN; SODIUM CHANNEL; SINGLE SODIUM CHANNEL; TETRODOTOXIN-RESISTANT SODIUM CHANNEL;
D O I
10.1016/0006-8993(94)91803-1
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Tetrodotoxin-sensitive and tetrodotoxin-resistant single sod:um channel currents were recorded from rat dorsal root ganglion neurons. The two types of sodium channel currents could be distinguished by the effects of predepolarization, 10 nM tetrodotoxin, and the inactivation during depolarization. Single-channel conductances were calculated to be 6.3 and 3.4 pS in the tetrodotoxin-sensitive and tetrodotoxin-resistant channels, reflectively.
引用
收藏
页码:341 / 346
页数:6
相关论文
共 37 条
[1]   PATCH-CLAMP STUDY OF THE TETRODOTOXIN-RESISTANT SODIUM CURRENT IN GROUP C SENSORY NEURONS [J].
BOSSU, JL ;
FELTZ, A .
NEUROSCIENCE LETTERS, 1984, 51 (02) :241-246
[2]   A CADMIUM-SENSITIVE, TETRODOTOXIN-RESISTANT SODIUM-CHANNEL IN BULLFROG AUTONOMIC AXONS [J].
BOWERS, CW .
BRAIN RESEARCH, 1985, 340 (01) :143-147
[3]   3 TYPES OF SODIUM-CHANNELS IN ADULT-RAT DORSAL-ROOT GANGLION NEURONS [J].
CAFFREY, JM ;
ENG, DL ;
BLACK, JA ;
WAXMAN, SG ;
KOCSIS, JD .
BRAIN RESEARCH, 1992, 592 (1-2) :283-297
[4]  
CAMPBELL D T, 1992, Biophysical Journal, V61, pA111
[5]   CHARACTERIZATION OF TTX-SENSITIVE AND TTX-RESISTANT SODIUM CURRENTS IN SMALL-CELLS FROM ADULT-RAT DORSAL-ROOT GANGLIA [J].
ELLIOTT, AA ;
ELLIOTT, JR .
JOURNAL OF PHYSIOLOGY-LONDON, 1993, 463 :39-56
[6]  
FRELIN C, 1983, J BIOL CHEM, V258, P7256
[7]   DIFFERENT FUNCTIONAL-STATES OF TETRODOTOXIN SENSITIVE AND TETRODOTOXIN RESISTANT NA+ CHANNELS OCCUR DURING THE INVITRO DEVELOPMENT OF RAT SKELETAL-MUSCLE [J].
FRELIN, C ;
VIJVERBERG, HPM ;
ROMEY, G ;
VIGNE, P ;
LAZDUNSKI, M .
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY, 1984, 402 (02) :121-128
[8]   TETRODOTOXIN-SENSITIVE AND TETRODOTOXIN-RESISTANT NA+ CHANNELS DIFFER IN THEIR SENSITIVITY TO CD2+ AND ZN2+ [J].
FRELIN, C ;
COGNARD, C ;
VIGNE, P ;
LAZDUNSKI, M .
EUROPEAN JOURNAL OF PHARMACOLOGY, 1986, 122 (02) :245-250
[9]   IMPROVED PATCH-CLAMP TECHNIQUES FOR HIGH-RESOLUTION CURRENT RECORDING FROM CELLS AND CELL-FREE MEMBRANE PATCHES [J].
HAMILL, OP ;
MARTY, A ;
NEHER, E ;
SAKMANN, B ;
SIGWORTH, FJ .
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY, 1981, 391 (02) :85-100
[10]   STUDIES ON TETRODOTOXIN RESISTANT ACTION POTENTIALS IN DENERVATED SKELETAL MUSCLE [J].
HARRIS, JB ;
THESLEFF, S .
ACTA PHYSIOLOGICA SCANDINAVICA, 1971, 83 (03) :382-&