scholarly journals The Frog Motor Nerve Terminal Has Very Brief Action Potentials and Three Electrical Regions Predicted to Differentially Control Transmitter Release

2020 ◽  
Vol 40 (18) ◽  
pp. 3504-3516 ◽  
Author(s):  
Scott P. Ginebaugh ◽  
Eric D. Cyphers ◽  
Viswanath Lanka ◽  
Gloria Ortiz ◽  
Evan W. Miller ◽  
...  
Keyword(s):  
Nerve Terminal ◽  
Transmitter Release ◽  
Action Potentials ◽  
Motor Nerve ◽  
Motor Nerve Terminal

Mouse motor nerve terminal immunoreactivity to synaptotagmin II during sustained quantal transmitter release

1995 ◽  
Vol 681 (1-2) ◽  
pp. 213-217 ◽  
Author(s):  
Denise Angaut-Petit ◽  
Pascal Juzans ◽  
Jordi Molgó ◽  
Lucette Faille ◽  
Michael J. Seagar ◽  
...  
Keyword(s):  
Nerve Terminal ◽  
Transmitter Release ◽  
Motor Nerve ◽  
Motor Nerve Terminal ◽  
Quantal Transmitter Release

Stereospecific glucose transport across motor nerve terminal membrane: an electrophysiological study

1983 ◽  
Vol 245 (5) ◽  
pp. C308-C315 ◽  
Author(s):  
Y. Shimoni ◽  
R. Rahamimoff
Keyword(s):  
Glucose Transport ◽  
Nerve Terminal ◽  
Transmitter Release ◽  
Motor Nerve ◽  
Electrophysiological Study ◽  
Motor Nerve Terminal ◽  
Transient Nature ◽  
Rate Of Decline ◽  
Osmotic Equilibration ◽  
Sustained Increase

Spontaneous transmitter release at the neuromuscular junction of the frog and rat was monitored during exposures to hyperosmotic solutions containing different sugars. Raising the osmolarity of the medium with D-glucose causes a marked, but transient, increase in the frequency of miniature end-plate potentials (MEPPs): after the initial elevation in frequency there is a subsequent decline towards the control levels, in spite of a continuous perfusion with the hyperosmotic solution. This decline occurs more rapidly in the frog. Two nonmetabolized analogues of glucose, 2-deoxy-D-glucose and 3-O-methylglucose, cause a transient hyperosmotic increase in MEPP frequency, which is very similar to the effect of D-glucose. The elevation of MEPP frequency with hyperosmotic glucose is stereospecific. Hyperosmotic solutions of L-glucose cause a sustained increase in transmitter release in the rat and frog. Insulin dramatically reduces the response of the frog nerve terminal to hyperosmotic D-glucose. Phenolphthalein, a glucose transport blocker, reduces or eliminates the secondary decline in MEPP frequency. It is suggested that the transient nature of the response to hyperosmotic solutions reflects the penetration of the hyperosmotic agent into the nerve terminal. The rate of decline of the MEPP frequency presumably indicates the rate of transport, which determines the rate of osmotic equilibration. This rate can then serve as an index of the relative permeability of the functioning presynaptic membrane to different sugars.

Identification of transmitter release sites in the motor nerve terminal

1991 ◽  
Vol 22 (3) ◽  
pp. 228-235
Author(s):  
A. L. Zefirov ◽  
T. V. Benish ◽  
N. F. Fatkullin
Keyword(s):  
Nerve Terminal ◽  
Transmitter Release ◽  
Motor Nerve ◽  
Motor Nerve Terminal

scholarly journals Calmodulin increases transmitter release by mobilizing quanta at the frog motor nerve terminal

2002 ◽  
Vol 137 (5) ◽  
pp. 719-727 ◽  
Author(s):  
Eugen Brailoiu ◽  
Michael D Miyamoto ◽  
Nae J Dun
Keyword(s):  
Nerve Terminal ◽  
Transmitter Release ◽  
Motor Nerve ◽  
Motor Nerve Terminal

Aging increases calcium influx at motor nerve terminal

1990 ◽  
Vol 8 (6) ◽  
pp. 655-666 ◽  
Author(s):  
Waleed B. Alshuaib ◽  
Mohamed A. Fahim
Keyword(s):  
Nerve Terminal ◽  
Calcium Influx ◽  
Motor Nerve ◽  
Motor Nerve Terminal
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