Effect of fasting on carbohydrate metabolism in frugivorous bats (Artibeus lituratus and Artibeus jamaicensis)

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorPinheiro, E. C.
dc.creatorTaddei, V. A.
dc.creatorMighorini, R. H.
dc.creatorKettelhut, I. C.
dc.date2014-05-20T15:30:15Z
dc.date2016-10-25T18:05:42Z
dc.date2014-05-20T15:30:15Z
dc.date2016-10-25T18:05:42Z
dc.date2006-03-01
dc.date.accessioned2017-04-06T00:16:00Z
dc.date.available2017-04-06T00:16:00Z
dc.identifierComparative Biochemistry and Physiology B-biochemistry & Molecular Biology. New York: Elsevier B.V., v. 143, n. 3, p. 279-284, 2006.
dc.identifier1096-4959
dc.identifierhttp://hdl.handle.net/11449/39677
dc.identifierhttp://acervodigital.unesp.br/handle/11449/39677
dc.identifier10.1016/j.cbpb.2005.11.013
dc.identifierWOS:000236232800003
dc.identifierhttp://dx.doi.org/10.1016/j.cbpb.2005.11.013
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/882534
dc.descriptionThe compensatory changes of carbohydrate metabolism induced by fasting were investigated in frugivorous bats, Artibeus lituratus and Artibeus jamaicensis. For this purpose, plasma levels of glucose and lactate, liver and muscle glycogen content, rates of liver gluconeogenesis and the activity of related enzymes were determined in male bats. After a decrease during the first 48 h of fasting, plasma glucose levels remained constant until the end of the experimental period. Plasma lactate levels, extremely high in fed bats, decreased after 48 h of fasting. Similarly, liver glycogen content, markedly high in fed animals, was reduced to low levels after 24 h without food. Muscle glycogen was also reduced in fasted bats. The expected increase in liver gluconeogenesis during fasting was observed after 48 h of fasting. The activities of liver glucose-6-phosphatase and fructose-1,6-bisphosphatase were not affected by food withdrawn. on the other hand, fasting for 24 h induced an increase in the activity of liver cytosolic phosphoenolpyruvate carboxykinase. The data indicate that liver gluconeogenesis has an important role in the glucose homeostasis in frugivorous bats during prolonged periods of food deprivation. During short periods of fasting liver glycogenolysis seems to be the main responsible for the maintenance of glycemia. (C) 2005 Elsevier B.V. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationComparative Biochemistry and Physiology B: Biochemistry & Molecular Biology
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectcarbohydrate metabolism
dc.subjectfasting
dc.subjectfrugivorous bats
dc.subjectgluconeogenesis
dc.subjectglycemia
dc.subjectglycogen
dc.subjectlactate
dc.subjectenzymes
dc.titleEffect of fasting on carbohydrate metabolism in frugivorous bats (Artibeus lituratus and Artibeus jamaicensis)
dc.typeOtro


Este ítem pertenece a la siguiente institución