Effects of acrylamide and other sulfhydryl compounds in vivo and in vitro on staining of motor nerve terminals by the zinc iodide-osmium technique

1984 ◽  
Vol 7 (2) ◽  
pp. 94-100 ◽  
Author(s):  
Sheila Kemplay ◽  
John B. Cavanagh
1995 ◽  
Vol 116 (2) ◽  
pp. 1757-1760 ◽  
Author(s):  
Shing H. Liu ◽  
Tzong J. Sheu ◽  
Ruey H. Lin ◽  
Shoei Y. Lin-Shiau

Author(s):  
M. Reinecke ◽  
Ch. Walther

The zinc iodide-osmium tetroxide reaction (ZIO) was first used in neurobiological research by Maillet (Bull. Ass. Anat. 53, 233; 1968). Subsequently several authors have shown that, under appropriate conditions, ZIO stains mainly the interior of synaptic vesicles. The substrate of this reaction is under discussion, since ZIO can also react with other subcellular structures in a variety of tissues, e. g. mitochondria, endoplasmic reticulum, dictyosomes and lysosomes. Additionally, in vitro substances as different as some aminoacids, catecholamines, aldehydes and phospholipids (Pellegrino de Iraldi, Experientia 33, 1; 1977) can yield black precipitations with ZIO.Our studies were done with the motor nerve terminals at the femoral retractor unguis muscle of the locust (Locusta migratoria). These terminals are chiefly the endings of excitatory motoraxons and are characterized by the presence of electron lucent vesicles and by an accumulation of mitochondria.


1984 ◽  
Vol 222 (1226) ◽  
pp. 115-120 ◽  

Focal extracellular recording was made from presynaptic motor nerve terminals made visible directly in in vitro preparations of mouse intercostalis intimi muscles. The demonstration of a net inward current distally in these terminals at sites of transmitter release allow the conclusion that the mammalian terminal is electrically excitable, contrary to a recent claim that it is not.


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