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The Neuronal Origin of Prostaglandin Released from the Rabbit Portal Vein in Response to Electrical Stimulation

Overview
Journal Br J Pharmacol
Publisher Wiley
Specialty Pharmacology
Date 1978 May 1
PMID 206308
Citations 2
Authors
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Abstract

Transmural electrical stimulation of the isolated portal vein of the rabbit was accompanied by the release of a prostaglandin-like substance (PLS). Thin layer chromatography coupled with bioassay indicated that this substance was probably prostaglandin E2 (PGE2). 2 Indomethacin potentiated the response of the portal vein to electrical stimulation at 2 Hz and abolished the release of the PLS. 3 There was no significant change in the amount of PLS released from the portal vein in response to electrical stimulation at 2 Hz when the contractile response of the portal vein was prevented by pretreatment with phentolamine or guanthidine. 4 In vitro denervation of the portal vein with 6-hydroxydopamine or the omission of Ca2+ from the bathing solution caused a significant reduction in the amount of PLS released from the portal vein in response to electrical stimulation at 2 hertz. 5 It is concluded that electrical stimulation of the isolated portal vein of the rabbit is accompanied by the release of a PLS, probably PGE2, from a neuronal source. The synthesis and release of the PLS is Ca2+ -dependent.

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A possible negative feedback control of excitatory transmission via prostaglandins in canine small intestine.

Nakahata N, Nakanishi H, Suzuki T Br J Pharmacol. 1980; 68(3):393-8.

PMID: 6301592 PMC: 2044212. DOI: 10.1111/j.1476-5381.1980.tb14552.x.


Prostaglandin-induced inhibition of acetylcholine release from neuronal elements of dog tracheal tissue.

Inoue T, Ito Y, Takeda K J Physiol. 1984; 349:553-70.

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