Dietary lipids alter the effect of steroids on the transport of glucose after intestinal resection: Part I. Phenotypic changes and expression of transporters.
OBJECTIVE
Glucocorticosteroids alter the function of the intestine. This study was undertaken to assess the effect on D-glucose uptake of budesonide (Bud), prednisone (Pred), or dexamethasone (Dex) in animals with a 50% intestinal resection and fed chow or a diet enriched with saturated (SFA) or polyunsaturated fatty acids (PUFA).


METHODS
In vitro ring uptake technique, Western blots, and Northern blots were performed.


RESULTS
Bud increased the jejunal D-glucose uptake, and this effect was prevented by feeding PUFA. SGLT1 and Na+/K+ ATPase protein and mRNA abundance did not correlate with the change in the rate of uptake of glucose.


CONCLUSIONS
(1) Bud increased the jejunal glucose uptake, (2) the activity of the sugar transporter does not correlate with the abundance of protein or their respective mRNAs, (3) th Bud effect on glucose uptake is prevented by feeding PUFA. Thus, the desired intestinal adaptive response after intestinal resection may be enhanced further by the administration of the locally acting steroid budesonide and by feeding a saturated compared with a polyunsaturated fatty acid diet.
Thiesen
Aducio L
AL
Nutrition and Metabolism Research Group, Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, Canada.
Tappenden
Kelly A
KA
McBurney
Mike I
MI
Clandinin
M Thomas
MT
Keelan
Monika
M
Thomson
Ben K
BK
Wild
Gary E
GE
Thomson
Alan B
AB
D000818:Animals; D015152:Blotting, Northern; D015153:Blotting, Western; D019819:Budesonide / Q000494:pharmacology; D003907:Dexamethasone / Q000494:pharmacology; D004041:Dietary Fats / Q000008:administration & dosage*; D004042:Dietary Fats, Unsaturated / Q000008:administration & dosage; D005231:Fatty Acids, Unsaturated / Q000008:administration & dosage; D005786:Gene Expression Regulation / Q000187:drug effects; D005938:Glucocorticoids / Q000494:pharmacology*; D005947:Glucose / Q000493:pharmacokinetics*; D007082:Ileum / Q000187:drug effects / Q000502:physiology / Q000601:surgery*; D007408:Intestinal Absorption / Q000187:drug effects; D007583:Jejunum / Q000187:drug effects / Q000502:physiology / Q000601:surgery*; D008297:Male; D008562:Membrane Glycoproteins / Q000235:genetics / Q000378:metabolism; D009004:Monosaccharide Transport Proteins / Q000235:genetics* / Q000378:metabolism; D010641:Phenotype; D011241:Prednisone / Q000494:pharmacology; D012333:RNA, Messenger / Q000032:analysis / Q000378:metabolism; D051381:Rats; D017207:Rats, Sprague-Dawley; D051269:Sodium-Glucose Transporter 1; D000254:Sodium-Potassium-Exchanging ATPase / Q000235:genetics / Q000378:metabolism; D015430:Weight Gain / Q000187:drug effects
D004041:Dietary Fats; D004042:Dietary Fats, Unsaturated; D005231:Fatty Acids, Unsaturated; D005938:Glucocorticoids; D008562:Membrane Glycoproteins; D009004:Monosaccharide Transport Proteins; D012333:RNA, Messenger; C495676:Slc5a1 protein, rat; D051269:Sodium-Glucose Transporter 1; D019819:Budesonide; D003907:Dexamethasone; D000254:Sodium-Potassium-Exchanging ATPase; D005947:Glucose; D011241:Prednisone