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Actions of adenylyl compounds in the pedal disc of the cnidarian Actinia equina

Hoyle, CHV; Knight, GE; Burnstock, G; (1989) Actions of adenylyl compounds in the pedal disc of the cnidarian Actinia equina. Comparative Biochemistry and Physiology. Part C, Comparative , 94 (1) pp. 111-114. 10.1016/0742-8413(89)90152-7.

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Abstract

1. The actions of adenylyl compounds were investigated in the circular muscle of the pedal disc of the sea anenome Actinia equina. 2. Adenosine, adenosine 5'-diphosphate and adenosine 5'-triphosphate (ATP), but not adenosine 5'-monophosphate or the analogues of ATP, α,β-methylene ATP, and 2-methylthio ATP, caused concentration-dependent contractions. 3. Neurogenic contractions in response to electrical field stimulation were not consistently affected by any of the adenylyl compounds and could be either potentiated or almost abolished by them. 4. Reactive Blue 2, a vertebrate P2-purinoceptor antagonist, caused concentration-dependent contractions which were mediated by nerves, being blocked by the anaesthetic chlorobutanol. 5. The pharmacological profile of the adenylyl compounds in the pedal disc of Actinia equina is different from that observed in other invertebrate species and adds to the greater diversity of such profiles in invertebrates than in vertebrates. © 1989.

Type: Article
Title: Actions of adenylyl compounds in the pedal disc of the cnidarian Actinia equina
DOI: 10.1016/0742-8413(89)90152-7
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Neuro, Physiology and Pharmacology
URI: http://discovery.ucl.ac.uk/id/eprint/10027324
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