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dc.contributor.author Nagy, Ádám Miklós
dc.contributor.author Fekete, Rebeka
dc.contributor.author Horváth, Gergő
dc.contributor.author Koncsos, Gábor
dc.contributor.author Kriston, Csilla
dc.contributor.author Sebestyén, Anna
dc.contributor.author Giricz, Zoltán
dc.contributor.author Környei, Zsuzsanna
dc.contributor.author Madarász, Emília
dc.contributor.author Tretter, László
dc.date.accessioned 2018-07-19T09:47:59Z
dc.date.available 2018-07-19T09:47:59Z
dc.date.issued 2018
dc.identifier 85040366337
dc.identifier.citation pagination=201-214; journalVolume=1859; journalIssueNumber=3; journalTitle=BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS;
dc.identifier.uri http://repo.lib.semmelweis.hu//handle/123456789/5067
dc.identifier.uri doi:10.1016/j.bbabio.2017.12.002
dc.description.abstract Microglia are highly dynamic cells in the brain. Their functional diversity and phenotypic versatility brought microglial energy metabolism into the focus of research. Although it is known that microenvironmental cues shape microglial phenotype, their bioenergetic response to local nutrient availability remains unclear. In the present study effects of energy substrates on the oxidative and glycolytic metabolism of primary - and BV-2 microglial cells were investigated. Cellular oxygen consumption, glycolytic activity, the levels of intracellular ATP/ADP, autophagy, mTOR phosphorylation, apoptosis and cell viability were measured in the absence of nutrients or in the presence of physiological energy substrates: glutamine, glucose, lactate, pyruvate or ketone bodies. All of the oxidative energy metabolites increased the rate of basal and maximal respiration. However, the addition of glucose decreased microglial oxidative metabolism and glycolytic activity was enhanced. Increased ATP/ADP ratio and cell viability, activation of the mTOR and reduction of autophagic activity were observed in glutamine-supplemented media. Moreover, moderate and transient oxidation of ketone bodies was highly enhanced by glutamine, suggesting that anaplerosis of the TCA-cycle could stimulate ketone body oxidation. It is concluded that microglia show high metabolic plasticity and utilize a wide range of substrates. Among them glutamine is the most efficient metabolite. To our knowledge these data provide the first account of microglial direct metabolic response to nutrients under short-term starvation and demonstrate that microglia exhibit versatile metabolic machinery. Our finding that microglia have a distinct bioenergetic profile provides a critical foundation for specifying microglial contributions to brain energy metabolism.
dc.relation.ispartof urn:issn:0005-2728
dc.title Versatility of microglial bioenergetic machinery under starving conditions
dc.type Journal Article
dc.date.updated 2018-03-05T10:18:01Z
dc.language.rfc3066 en
dc.identifier.mtmt 3308092
dc.identifier.pubmed 29273412
dc.contributor.department SE/AOK/I/Orvosi Biokémiai Intézet
dc.contributor.department SE/AOK/I/Farmakológiai és Farmakoterápiás Intézet
dc.contributor.department SE/AOK/I/I. Sz. Patológiai és Kísérleti Rákkutató Intézet
dc.contributor.department SE/AOK/I/OBI/MTA-SE Neurobiokémiai Kutatócsoport
dc.contributor.institution Semmelweis Egyetem
dc.mtmt.swordnote FELTÖLTŐ: Bökönyi Zita - bokonyi.zita@med.semmelweis-univ.hu


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