Choline transporters, cholinergic transmission and cognition

2005 ◽  
Vol 6 (1) ◽  
pp. 48-56 ◽  
Author(s):  
Martin Sarter ◽  
Vinay Parikh
2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Santhosh Sethuramanujam ◽  
Akihiro Matsumoto ◽  
Geoff deRosenroll ◽  
Benjamin Murphy-Baum ◽  
J Michael McIntosh ◽  
...  

AbstractIn many parts of the central nervous system, including the retina, it is unclear whether cholinergic transmission is mediated by rapid, point-to-point synaptic mechanisms, or slower, broad-scale ‘non-synaptic’ mechanisms. Here, we characterized the ultrastructural features of cholinergic connections between direction-selective starburst amacrine cells and downstream ganglion cells in an existing serial electron microscopy data set, as well as their functional properties using electrophysiology and two-photon acetylcholine (ACh) imaging. Correlative results demonstrate that a ‘tripartite’ structure facilitates a ‘multi-directed’ form of transmission, in which ACh released from a single vesicle rapidly (~1 ms) co-activates receptors expressed in multiple neurons located within ~1 µm of the release site. Cholinergic signals are direction-selective at a local, but not global scale, and facilitate the transfer of information from starburst to ganglion cell dendrites. These results suggest a distinct operational framework for cholinergic signaling that bears the hallmarks of synaptic and non-synaptic forms of transmission.


1994 ◽  
Vol 113 (1) ◽  
pp. 1-2 ◽  
Author(s):  
M. Tonini ◽  
E. Messori ◽  
G.P. Franceschetti ◽  
C.A. Rizzi ◽  
A.F. Castoldi ◽  
...  

Life Sciences ◽  
1981 ◽  
Vol 29 (10) ◽  
pp. 1033-1037 ◽  
Author(s):  
M.E. Eldefrawi ◽  
N. Shaker ◽  
N.A. Mansour ◽  
J.E. Warnick ◽  
E.X. Albuquerque

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