{"refrec":{"BRefID":30178,"RR":"<b>Mallefet, J.; Baguet, F.; Fauville, C.</b> (1993). Modulatory effects of adenosine on <i>Porichthys</i> luminescence. <i>J. Exp. Zool. 266(1)</i>: 1-10","BEntID":30178,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>J. Exp. Zool. 266(1)</i>: 1-10","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mallefet, J.; Baguet, F.; Fauville, C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mallefet, J.; Baguet, F.; Fauville, C.","Englishabstract":"The modulatory effects of exogenous applications of adenosine on luminous organs (photophores) of the fish Porichthys were studied. Pretreatment of photophores with adenosine (10<sup>-7</sup> to 10<sup>-3</sup> M) potentiated both phases of adrenaline induced luminescence. The first peak of light (Lmax1) showed a 3-fold increase following 10<sup>-7</sup> M adenosine treatment; a maximal increase of 12-fold was observed with 10<sup>-3</sup> M adenosine. The second peak of light (Lmax2) exhibited a similar dose-response curve, but the maximal increase was attained with 10<sup>-4</sup> M adenosine. The potentiating effect of 1 muM adenosine on light emission triggered by adrenaline increased for adrenaline concentrations ranging from 10<sup>-7</sup> to 10<sup>-4</sup> M for Lmax1, but it remained stable for Lmax2. All 4 P1-purinergic agonists tested at the final concentration of 10<sup>-4</sup> M induced a potentiation of adrenaline luminescence with the following rank of potency: L-PIA > NECA > CADO greater-than-or-equal-to CHA = ADO for Lmax1 and NECA > CADO > ADO > CHA > L-PIA for Lmax2. The potentiating effect of adenosine was antagonized with the following rank of potency by the P-1 purinergic antagonists: CPT > DPMX greater-than-or-equal-to AMINO > THEO for Lmax1 and CPT > AMINO > THEO greater-than-or-equal-to DPMX for Lmax2. According to the classification of purinergic receptors, our results suggest that P1-purinergic receptors might be implicated in the adenosine potentiation of Porichthys adrenaline luminescence. Experiments also showed that noradrenaline luminescence is inhibited by 1 µM adenosine pretreatment. Further work will be necessary to elucidate the mechanism involved in the modulatory roles played by the purinergic receptors on adrenaline and noradrenaline luminescence in <i>Porichthys</i> photophores.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Modulatory effects of adenosine on <i>Porichthys</i> luminescence","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1993,"MonPub":null,"DateUpdate":"2002-12-19","DateCreate":"2002-12-16","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":30178,"PubliDate":1993,"Pagination":"1-10","XtraPublOfAnaID":null,"ISBN":null,"Volume":"266","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45598,"SerRR":"The Journal of Experimental Zoology. 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