Title : PACAP 38 is involved in the non-adrenergic non-cholinergic inhibitory neurotransmission in the pig urinary bladder neck.

Pub. Date : 2006

PMID : 16721838






6 Functional Relationships(s)
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1 RESULTS: EFS (2-16 Hz, 1 ms duration, 20 sec trains, 75 mA current output) evoked frequency-dependent relaxations which were reduced by the VIP/PACAP receptor antagonist PACAP (6-38) (3 microM), and by the neurotoxin of the capsaicin-sensitive primary afferents capsaicin (10 microM), and abolished by the neuronal voltage-activated Na(+) channel blocker tetrodotoxin (TTX, 1 microM). Capsaicin adenylate cyclase activating polypeptide 1 Sus scrofa
2 RESULTS: EFS (2-16 Hz, 1 ms duration, 20 sec trains, 75 mA current output) evoked frequency-dependent relaxations which were reduced by the VIP/PACAP receptor antagonist PACAP (6-38) (3 microM), and by the neurotoxin of the capsaicin-sensitive primary afferents capsaicin (10 microM), and abolished by the neuronal voltage-activated Na(+) channel blocker tetrodotoxin (TTX, 1 microM). Capsaicin adenylate cyclase activating polypeptide 1 Sus scrofa
3 RESULTS: EFS (2-16 Hz, 1 ms duration, 20 sec trains, 75 mA current output) evoked frequency-dependent relaxations which were reduced by the VIP/PACAP receptor antagonist PACAP (6-38) (3 microM), and by the neurotoxin of the capsaicin-sensitive primary afferents capsaicin (10 microM), and abolished by the neuronal voltage-activated Na(+) channel blocker tetrodotoxin (TTX, 1 microM). Capsaicin adenylate cyclase activating polypeptide 1 Sus scrofa
4 RESULTS: EFS (2-16 Hz, 1 ms duration, 20 sec trains, 75 mA current output) evoked frequency-dependent relaxations which were reduced by the VIP/PACAP receptor antagonist PACAP (6-38) (3 microM), and by the neurotoxin of the capsaicin-sensitive primary afferents capsaicin (10 microM), and abolished by the neuronal voltage-activated Na(+) channel blocker tetrodotoxin (TTX, 1 microM). Capsaicin adenylate cyclase activating polypeptide 1 Sus scrofa
5 CONCLUSIONS: The results suggest that PACAP 38, mainly released from capsaicin-sensitive primary afferents, is involved in the NANC inhibitory neurotransmission of the pig urinary bladder neck, producing relaxation through neuronal and muscle VIP/PACAP receptor activation. Capsaicin adenylate cyclase activating polypeptide 1 Sus scrofa
6 CONCLUSIONS: The results suggest that PACAP 38, mainly released from capsaicin-sensitive primary afferents, is involved in the NANC inhibitory neurotransmission of the pig urinary bladder neck, producing relaxation through neuronal and muscle VIP/PACAP receptor activation. Capsaicin adenylate cyclase activating polypeptide 1 Sus scrofa