Glycemic responses in white sturgeon after oral administration of graded doses of D-glucose
Identifieur interne : 001277 ( Main/Exploration ); précédent : 001276; suivant : 001278Glycemic responses in white sturgeon after oral administration of graded doses of D-glucose
Auteurs : Enric Gisbert [États-Unis, Espagne] ; Roberto D. Sainz [États-Unis] ; Silas S. O. Hung [États-Unis]Source :
- Aquaculture : (Amsterdam) [ 0044-8486 ] ; 2003.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Glucose.
English descriptors
- KwdEn :
Abstract
Oral glucose tolerance tests, using a technique that combined esophageal intubation, dorsal aorta cannulation and urinary catheterization, were performed to assess the ability of white sturgeon to utilize different doses of D-glucose (0, 250, 500, 750, 1000, 1250 and 1500 mg.kg-1 body weight (BW)). In fish intubated with 0 mg glucose.kg-1 BW, plasma glucose concentrations did not change significantly during the 24-h experimental period (4.3 ± 0.1 mmol.l-1, mean ± S.E., n=40 (5 fish and 8 time points), P>0.05). Observed maximum plasma glucose concentrations (8.4 ± 0.4 and 10.1 ± 0.8 mmol.l-1, n 5) were detected at 3-4 h post-intubation in fish given 1250 and 1500 mg glucose.kg-1 BW, respectively (P<0.05). White sturgeon dosed with 500, 750, 1000, 1250 and 1500 mg glucose.kg BW-1 showed a persistent hyperglycemia not corrected until 12-24 h post-intubation. Comparttnental modeling of plasma glucose kinetics indicated that the rate constant for glucose absorption from the digestive tract into the bloodstream was significantly reduced, indicating that glucose absorption into the circulation was non-linearly related to dose, and became saturated at higher dosages. In contrast, glucose clearance rate increased with increasing plasma glucose concentration, but the rate of gluconeogenesis appeared to decrease only slightly. The small reduction in gluconeogenesis may contribute to the prolonged hyperglycemia observed in sturgeon after a glucose load.
Affiliations:
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Diagonal, 625</s1><s2>08028 Barcelona</s2><s3>ESP</s3><sZ>1 aut.</sZ></inist:fA14><country>Espagne</country><placeName><region nuts="2" type="communauté">Catalogne</region><settlement type="city">Barcelone</settlement></placeName><orgName type="university">Université de Barcelone</orgName></affiliation></author><author><name sortKey="Sainz, Roberto D" sort="Sainz, Roberto D" uniqKey="Sainz R" first="Roberto D." last="Sainz">Roberto D. Sainz</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Animal Science, University of California, One Shields Avenue</s1><s2>Davis, CA 95616-8521</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Hung, Silas S O" sort="Hung, Silas S O" uniqKey="Hung S" first="Silas S. O." last="Hung">Silas S. O. Hung</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Animal Science, University of California, One Shields Avenue</s1><s2>Davis, CA 95616-8521</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Aquaculture : (Amsterdam)</title><title level="j" type="abbreviated">Aquaculture : (Amst.)</title><idno type="ISSN">0044-8486</idno><imprint><date when="2003">2003</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Aquaculture : (Amsterdam)</title><title level="j" type="abbreviated">Aquaculture : (Amst.)</title><idno type="ISSN">0044-8486</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption</term><term>Acipenser transmontanus</term><term>Body weight</term><term>Digestive tract</term><term>Glucose</term><term>Glucose tolerance test</term><term>Glycemia</term><term>Modeling</term><term>Oral administration</term><term>Pisces</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Voie orale</term><term>Glucose</term><term>Hyperglycémie provoquée</term><term>Poids corporel</term><term>Modélisation</term><term>Absorption</term><term>Tube digestif</term><term>Glycémie</term><term>Pisces</term><term>Acipenser transmontanus</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Glucose</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Oral glucose tolerance tests, using a technique that combined esophageal intubation, dorsal aorta cannulation and urinary catheterization, were performed to assess the ability of white sturgeon to utilize different doses of D-glucose (0, 250, 500, 750, 1000, 1250 and 1500 mg.kg<sup>-1</sup> body weight (BW)). In fish intubated with 0 mg glucose.kg<sup>-1</sup> BW, plasma glucose concentrations did not change significantly during the 24-h experimental period (4.3 ± 0.1 mmol.l<sup>-1</sup>, mean ± S.E., n=40 (5 fish and 8 time points), P>0.05). Observed maximum plasma glucose concentrations (8.4 ± 0.4 and 10.1 ± 0.8 mmol.l<sup>-1</sup>, n 5) were detected at 3-4 h post-intubation in fish given 1250 and 1500 mg glucose.kg<sup>-1</sup> BW, respectively (P<0.05). White sturgeon dosed with 500, 750, 1000, 1250 and 1500 mg glucose.kg BW<sup>-1</sup> showed a persistent hyperglycemia not corrected until 12-24 h post-intubation. Comparttnental modeling of plasma glucose kinetics indicated that the rate constant for glucose absorption from the digestive tract into the bloodstream was significantly reduced, indicating that glucose absorption into the circulation was non-linearly related to dose, and became saturated at higher dosages. In contrast, glucose clearance rate increased with increasing plasma glucose concentration, but the rate of gluconeogenesis appeared to decrease only slightly. The small reduction in gluconeogenesis may contribute to the prolonged hyperglycemia observed in sturgeon after a glucose load.</div></front></TEI><affiliations><list><country><li>Espagne</li><li>États-Unis</li></country><region><li>Californie</li><li>Catalogne</li></region><settlement><li>Barcelone</li></settlement><orgName><li>Université de Barcelone</li></orgName></list><tree><country name="États-Unis"><region name="Californie"><name sortKey="Gisbert, Enric" sort="Gisbert, Enric" uniqKey="Gisbert E" first="Enric" last="Gisbert">Enric Gisbert</name></region><name sortKey="Hung, Silas S O" sort="Hung, Silas S O" uniqKey="Hung S" first="Silas S. O." last="Hung">Silas S. O. Hung</name><name sortKey="Sainz, Roberto D" sort="Sainz, Roberto D" uniqKey="Sainz R" first="Roberto D." last="Sainz">Roberto D. Sainz</name></country><country name="Espagne"><region name="Catalogne"><name sortKey="Gisbert, Enric" sort="Gisbert, Enric" uniqKey="Gisbert E" first="Enric" last="Gisbert">Enric Gisbert</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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