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001-es BibID:	BIBFORM079005
035-os BibID:	(cikkazonosító)10562 (WOS)000438343600072 (Scopus)85049897404 (PubMed)30002493
Első szerző:	Hegyi Zoltán (molekuláris biológus)
Cím:	CB1 receptor activation induces intracellular Ca2+ mobilization and 2-arachidonoylglycerol release in rodent spinal cord astrocytes / Zoltán Hegyi, Tamás Oláh, Áron Kőszeghy, Fabiana Piscitelli, Krisztina Holló, Balázs Pál, László Csernoch, Vincenzo Di Marzo, Miklós Antal
Dátum:	2018
ISSN:	2045-2322
Megjegyzések:	Accumulating evidence supports the role of astrocytes in endocannabinoid mediated modulation of neural activity. It has been reported that some astrocytes express the cannabinoid type 1 receptor (CB1-R), the activation of which is leading to Ca2+ mobilization from internal stores and a consecutive release of glutamate. It has also been documented that astrocytes have the potential to produce the endocannabinoid 2-arachidonoylglycerol, one of the best known CB1-R agonist. However, no relationship between CB1-R activation and 2-arachidonoylglycerol production has ever been demonstrated. Here we show that rat spinal astrocytes co-express CB1-Rs and the 2-arachidonoylglycerol synthesizing enzyme, diacylglycerol lipase-alpha in close vicinity to each other. We also demonstrate that activation of CB1-Rs induces a substantial elevation of intracellular Ca2+ concentration in astrocytes. Finally, we provide evidence that the evoked Ca2+ transients lead to the production of 2-arachidonoylglycerol in cultured astrocytes. The results provide evidence for a novel cannabinoid induced endocannabinoid release mechanism in astrocytes which broadens the bidirectional signaling repertoire between astrocytes and neurons.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Scientific Reports. - 8 (2018), p. 10562. -
További szerzők:	Oláh Tamás (1983-) (élettanász) Kőszeghy Áron (1983-) (Ph.D hallgató, élettanász) Piscitelli, Fabiana Holló Krisztina (1967-) (vegyész) Pál Balázs (1975-) (élettanász) Csernoch László (1961-) (élettanász) Di Marzo, Vincenzo Antal Miklós (1951-) (orvos, anatómus)
Pályázati támogatás:	TKI 242 MTA KTIA_NAP_13-1-2013-0001 Egyéb KTIA_NAP_13-1-2013-0010 Egyéb NN-107765 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM050561
035-os BibID:	PMID:24114173
Első szerző:	Varga Angelika (biológus)
Cím:	Anandamide produced by Ca2+-insensitive enzymes induces excitation in primary sensory neurons / Angelika Varga, Agnes Jenes, Timothy H. Marczylo, Joao Sousa-Valente, Jie Chen, Jonothan Austin, Srikumaran Selvarajah, Fabiana Piscitelli, Anna P. Andreou, Anthony H. Taylor, Fiona Kyle, Mohammed Yaqoob, Sue Brain, John P. M. White, Laszlo Csernoch, Vincenzo Di Marzo, Laki Buluwela, Istvan Nagy
Dátum:	2014
ISSN:	0031-6768
Megjegyzések:	The endogenous lipid agent N-arachidonoylethanolamine (anandamide), among other effects, has been shown to be involved in nociceptive processing both in the central and peripheral nervous systems. Anandamide is thought to be synthesised by several enzymatic pathways both in a Ca2+-sensitive and Ca2+-insensitive manner, and rat primary sensory neurons produce anandamide. Here, we show for the first time, that cultured rat primary sensory neurons express at least four of the five known Ca2+-insensitive enzymes implicated in the synthesis of anandamide, and that application of 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine-N-arachidonoyl, the common substrate of the anandamide-synthesising pathways, results in anandamide production which is not changed by the removal of extracellular Ca2+. We also show that anandamide, which has been synthesised in primary sensory neurons following the application of 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine-N-arachidonoyl induces a transient receptor potential vanilloid type 1 ion channel-mediated excitatory effect that is not inhibited by concomitant activation of the cannabinoid type 1 receptor. Finally, we show that sub-populations of transient receptor potential vanilloid type 1 ion channel-expressing primary sensory neurons also express some of the putative Ca2+-insensitive anandamide-synthesising enzymes. Together, these findings indicate that anandamide synthesised by primary sensory neuron via a Ca2+-insensitive manner has an excitatory rather than an inhibitory role in primary sensory neurons and that excitation is mediated predominantly through autocrine signalling. Regulation of the activity of the Ca2+-insensitive anandamide-synthesising enzymes in these neurons may be capable of regulating the activity of these cells, with potential relevance to controlling nociceptive processing.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Pflugers Archiv. - 466 : 7 (2014), p. 1421-1435. -
További szerzők:	Jenes Ágnes (1980-) (élettanász) Marczylo, Timothy H. Sousa-Valente, Joao Chen, Jie Austin, Jonothan Selvarajah, Srikumaran Piscitelli, Fabiana Andreou, Anna P. Taylor, Anthony H. Kyle, Fiona Yaqoob, Mohammed Brain, Sue White, John P. M. Csernoch László (1961-) (élettanász) Di Marzo, Vincenzo Buluwela, Laki Nagy István
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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