Taurine supplementation enhances nutrient-induced insulin secretion in pancreatic mice islets

dc.creatorRibeiro, RA
dc.creatorBonfleur, ML
dc.creatorAmaral, AG
dc.creatorVanzela, EC
dc.creatorRocco, SA
dc.creatorBoschero, AC
dc.creatorCarneiro, EM
dc.date2009
dc.dateMAY
dc.date2014-11-15T08:50:05Z
dc.date2015-11-26T16:10:16Z
dc.date2014-11-15T08:50:05Z
dc.date2015-11-26T16:10:16Z
dc.date.accessioned2018-03-28T22:58:53Z
dc.date.available2018-03-28T22:58:53Z
dc.identifierDiabetes-metabolism Research And Reviews. John Wiley & Sons Ltd, v. 25, n. 4, n. 370, n. 379, 2009.
dc.identifier1520-7552
dc.identifierWOS:000266347200013
dc.identifier10.1002/dmrr.959
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/79057
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/79057
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/79057
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1266831
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionBackground Taurine (TAU), a naturally occurring sulfur-containing amino acid, is found at high concentrations in plasma and mammalian tissues and regulates osmolarity, ion channel activity, and glucose homeostasis. Several reports have shown that physiological plasma TAU levels seem to be important for adequate beta (beta)-cell function and insulin action, since low concentrations of TAU in the plasma have been reported in the pre-diabetic and diabetic states. Methods Glucose tolerance and insulin sensitivity were investigated in mice supplemented with 2% (w/v) TAU in their drinking water for 30 days, as well as the insulin secretion from isolated islets stimulated by glucose or L-leukine. Results TAU-supplemented mice demonstrated improved glucose tolerance and higher insulin sensitivity, compared to controls (CTL). In addition, their islets secreted more insulin in response to high concentrations of glucose and L-leucine. L-[U-(14)C] leucine oxidation was higher in TAU than in CTL islets, whereas D-[U-(14)C] glucose oxidation, ATP levels, glucose transporter (GLUT) 2 and glucokinase (GCK) protein expressions were similar in both types of islets. The L-type 2 subunit voltage-sensitive Ca(2+) channel protein, as well as (45)Ca uptake, were significantly higher in TAU-supplemented than CTL islets. In addition, islets from TAU-supplemented mice secreted more glucagon than CTL islets at low glucose. Conclusions TAU supplementation improves glucose tolerance and insulin sensitivity in mice, as well as insulin secretion from isolated islets. The latter effect seems to be, at least in part, dependent on a better Ca(2+) handling by the islets. Copyright (C) 2009 John Wiley & Sons Ltd.
dc.description25
dc.description4
dc.description370
dc.description379
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFAPESP [05/597070]
dc.languageen
dc.publisherJohn Wiley & Sons Ltd
dc.publisherChichester
dc.publisherInglaterra
dc.relationDiabetes-metabolism Research And Reviews
dc.relationDiabetes-Metab. Res. Rev.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectglucose homeostasis
dc.subjectinsulin secretion
dc.subjecttaurine supplementation
dc.subjectPerformance Liquid-chromatography
dc.subjectSensitive K+ Channels
dc.subjectProtein-kinase-a
dc.subjectBeta-cells
dc.subjectCalcium-channels
dc.subjectCa2+ Channels
dc.subjectSignaling Pathway
dc.subjectDown-regulation
dc.subjectMessenger-rnas
dc.subjectDiabetic-rats
dc.titleTaurine supplementation enhances nutrient-induced insulin secretion in pancreatic mice islets
dc.typeArtículos de revistas


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