Abstract：
:The nicotine and muscarinic responses of differentiated mouse neuroblastoma cells from the clonal line N1E 115 to applied cholinergic agents were recorded using single channel and whole cell patch clamp techniques. An inward macroscopic current induced by acetylcholine (ACh) at the resting potential was blocked by curare; cell-attached recordings revealed a single channel conductance of 18 pS and a lifetime of 36 ms at 30 degrees C, with 200 nM ACh. The zero current potential was close to 0 mV. The kinetics of these nicotinic currents were described by multiexponential functions for both the open and closed time distributions. An outward single channel current, present at resting and slightly depolarized potentials, was also observed and has been tentatively described as being dependent on muscarinic receptor activation, as it was usually blocked by atropine. Under our conditions of whole cell clamp, no macroscopic outward current sensitive to ACh was observed.
journal_name
Brain Resjournal_title
Brain researchauthors
Takeda K,Shimahara T,Tauc L,Berwald-Netter Ydoi
10.1016/0006-8993(86)91252-7subject
Has Abstractpub_date
1986-11-19 00:00:00pages
75-84issue
1eissn
0006-8993issn
1872-6240pii
0006-8993(86)91252-7journal_volume
398pub_type
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