| Glycemic and insulin responses in white sea bream Diplodus sargus, after intraperitoneal administration of glucose. | |
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MedLine Citation:
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PMID: 21830035 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A glucose tolerance test was performed in white sea bream Diplodus sargus, juveniles to evaluate the effect of a glucose load on plasma glucose, insulin, triacylglyceride levels, and on liver glycogen storage in order to study the capability of glucose utilization by this species. After being fasted for 48 h, fish were intraperitoneally injected with either 1 g of glucose per kg body weight or a saline solution. Plasma glucose rose from a basal level of 4 to a peak of 18-19 mmol l(-1), 2-4 h after glucose injection and fish exhibited hyperglycemia for 9 h. An insulin peak (from 0.5 to 0.8 ng ml(-1)) was observed 2-6 h after glucose injection, and basal value was attained within 9 h. Liver glycogen peaked 6-12 h after the glucose load and thereafter decreased to the basal value which was attained 24 h after injection. Plasma triacylglycerides in glucose-injected fish were only significantly higher than the basal value 12 h after injection. Glucose-injected fish generally showed lower plasma triacylglyceride levels than control fish. Our results indicate that under these experimental conditions, glucose acts as an insulin secretagogue in white sea bream juveniles. Moreover, insulin may have contributed to restoring basal plasma glucose levels by enhancing glucose uptake in the liver. Further studies are needed to corroborate the lipolytic action of glucose. Clearance of glucose from the blood stream was fast, comparatively to other species, indicating that white sea bream has a good capability of glucose utilization. |
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Authors:
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P Enes; H Peres; P Pousão-Ferreira; J Sanchez-Gurmaches; I Navarro; J Gutiérrez; A Oliva-Teles |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-10 |
Journal Detail:
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Title: Fish physiology and biochemistry Volume: - ISSN: 1573-5168 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-8-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100955049 Medline TA: Fish Physiol Biochem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Centro Interdisciplinar de Investigação Marinha e Ambiental (CIMAR/CIIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123, Porto, Portugal, enes@portugalmail.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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