Ganglion cells immunoreactive for catecholamine-synthesizing enzymes, neuropeptide Y and vasoactive intestinal polypeptide in the rat adrenal gland

1994 ◽  
Vol 275 (2) ◽  
pp. 201-213 ◽  
Author(s):  
Yukio Oomori ◽  
Sachiko Okumo ◽  
Hitoshi Fujisawa ◽  
Hiromichi Iuchi ◽  
Katsushi Ishikawa ◽  
...  
Keyword(s):  
Adrenal Gland ◽  
Neuropeptide Y ◽  
Vasoactive Intestinal Polypeptide ◽  
Ganglion Cells ◽  
Catecholamine Synthesizing Enzymes ◽  
Intestinal Polypeptide

Co-localization of vasoactive intestinal polypeptide and neuropeptide Y immunoreactivities in the nerve fibers of the rat adrenal gland

1990 ◽  
Vol 113 (2) ◽  
pp. 121-126 ◽  
Author(s):  
Eric Maubert ◽  
Gérard Tramu ◽  
Dominique Croix ◽  
Jean Claude Beauvillain ◽  
Jean Paul Dupouy
Keyword(s):  
Adrenal Gland ◽  
Neuropeptide Y ◽  
Vasoactive Intestinal Polypeptide ◽  
Nerve Fibers ◽  
Intestinal Polypeptide

Vasoactive intestinal polypeptide modulates GABAA receptor function in bipolar cells and ganglion cells of the rat retina

1992 ◽  
Vol 67 (4) ◽  
pp. 791-797 ◽  
Author(s):  
M. L. Veruki ◽  
H. H. Yeh
Keyword(s):  
Gabaa Receptor ◽  
Vasoactive Intestinal Polypeptide ◽  
Ganglion Cells ◽  
Bipolar Cells ◽  
Current Response ◽  
Gamma Aminobutyric Acid ◽  
Patch Clamp Recording ◽  
Rat Retina ◽  
Neuronal Populations ◽  
Intestinal Polypeptide

1. The effect of vasoactive intestinal polypeptide (VIP) on bipolar cells and ganglion cells freshly dissociated from the rat retina was studied under voltage clamp with the use of patch-clamp recording in the whole-cell configuration. 2. Application of VIP (1-100 microM) by itself resulted in no detectable current response in either bipolar cells or ganglion cells. However, gamma-aminobutyric acid (GABA)-activated macroscopic current responses elicited in both neuronal populations were potentiated on superimposed exposure to the neuropeptide. 3. GABA-activated chloride currents and muscimol-induced current responses were similarly potentiated on exposure to VIP, suggesting a synergistic interaction between VIP and GABAA receptor mechanisms. 4. We postulate that VIP plays a neuromodulatory role by regulating the excitability of inner retinal neurons and in this way modulates the efficacy of synaptic transmission in the retina.

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