Title : EP receptor subtypes implicated in the PGE2-induced sensitization of polymodal receptors in response to bradykinin and heat.

Pub. Date : 1996 Jun

PMID : 8793749






9 Functional Relationships(s)
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1 EP receptor subtypes implicated in the PGE2-induced sensitization of polymodal receptors in response to bradykinin and heat. Dinoprostone kininogen 1 Canis lupus familiaris
2 Our previous studies, in which we used in vitro canine testispermatic nerve preparations, showed that prostaglandin E2 (PGE2) augments both bradykinin (BK)- and heat-induced discharges of polymodal receptors. Dinoprostone kininogen 1 Canis lupus familiaris
3 Our previous studies, in which we used in vitro canine testispermatic nerve preparations, showed that prostaglandin E2 (PGE2) augments both bradykinin (BK)- and heat-induced discharges of polymodal receptors. Dinoprostone kininogen 1 Canis lupus familiaris
4 Our previous studies, in which we used in vitro canine testispermatic nerve preparations, showed that prostaglandin E2 (PGE2) augments both bradykinin (BK)- and heat-induced discharges of polymodal receptors. Dinoprostone kininogen 1 Canis lupus familiaris
5 Our previous studies, in which we used in vitro canine testispermatic nerve preparations, showed that prostaglandin E2 (PGE2) augments both bradykinin (BK)- and heat-induced discharges of polymodal receptors. Dinoprostone kininogen 1 Canis lupus familiaris
6 However, the PGE2 concentration required to augment the BK responses were 100 times lower than those necessary for the heat responses, suggesting that different receptors are involved in these phenomena. Dinoprostone kininogen 1 Canis lupus familiaris
7 PGE2-induced augmentation of the BK responses was unaffected when treated with an antagonist for the EP1 receptor, AH6809. Dinoprostone kininogen 1 Canis lupus familiaris
8 An agonist for the EP3 receptor, M&B28767, at > or = 10 nM, significantly augmented the BK responses in a concentration-dependent manner that mimics the PGE2-induced effect. Dinoprostone kininogen 1 Canis lupus familiaris
9 These results indicate that the EP3 and EP2 receptor subtypes are differentially implicated in the respective PGE2-induced augmentation of BK responses and heat responses of polymodal receptors. Dinoprostone kininogen 1 Canis lupus familiaris