Nitric oxide synthase in trigeminal ganglion cells projecting to the cochlea of rat and guinea pig

Neuroreport ◽  
1999 ◽  
Vol 10 (12) ◽  
pp. 2641-2645 ◽  
Author(s):  
Randolf Riemann ◽  
Stefan Reuss
1998 ◽  
Vol 506 (3) ◽  
pp. 639-651 ◽  
Author(s):  
Maria Pia Gallo ◽  
Dario Ghigo ◽  
Amalia Bosia ◽  
Giuseppe Alloatti ◽  
Costanzo Costamagna ◽  
...  

1998 ◽  
Vol 46 (12) ◽  
pp. 1385-1391 ◽  
Author(s):  
Wilko Coers ◽  
Wim Timens ◽  
Claudia Kempinga ◽  
Pieter A. Klok ◽  
Han Moshage

1997 ◽  
Vol 273 (6) ◽  
pp. G1273-G1289 ◽  
Author(s):  
Min-Tsai Liu ◽  
Annette L. Kirchgessner

The morphology, neurochemistry, and electrical properties of guinea pig pancreatic neurons were determined. The majority of neurons expressed choline acetyltransferase (ChAT) immunoreactivity; however, ChAT-negative neurons were also found. Both cholinergic and noncholinergic neurons expressed nitric oxide synthase (NOS) immunoreactivity. Three types of pancreatic neurons were distinguished. Phasic neurons fired action potentials (APs) at the onset of depolarizing current pulse, tonic neurons spiked throughout the duration of a suprathreshold depolarizing pulse, and APs could not be generated in nonspiking neurons, even though they did receive synaptic input. APs were tetrodotoxin sensitive, and all types of neurons received fast and slow excitatory postsynaptic potentials (EPSPs). Fast EPSPs had cholinergic and noncholinergic components. The majority of pancreatic neurons appeared to innervate the acini. NOS- and/or neuropeptide Y-immunoreactive phasic and tonic neurons were found. Microejection of 5-hydroxytryptamine (5-HT) caused a slow depolarization that was inhibited by the 5-HT1P antagonist N-acetyl-5-hydroxytryptophyl-5-hydroxytryptophan amide and mimicked by the 5-HT1Pagonist 6-hydroxyindalpine. A pancreatic 5-HT transporter was located, and inhibition of 5-HT uptake by fluoxetine blocked slow EPSPs in 5-HT-responsive neurons by receptor desensitization.


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