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Bile duct obstruction is associated with early postoperative upregulation of liver uncoupling protein-2 and reduced circulating glucose concentration in the rat
- Source :
- Nutrition. 26:405-410
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- Objective: To evaluate whether upregulation of liver and muscle uncoupling protein 2 (UCP-2) is an acute phenomenon in obstructive jaundice and associated with secondary metabolic effects. Methods: Male Sprague-Dawley rats were divided into four groups bile duct ligated (BDL) and sham-operated pair-fed (PF), ad libitum fed (AL), and controls BDL. PF. and AL rats were further divided into subgroups according to the interval postoperatively when they were reanesthetized and sampled for tissue and blood 2, 4, and 8 d, respectively Bilirubin, liver enzymes. glucose, free fatty acids, and insulin in blood plasma were analyzed Liver and muscle tissue were sampled for UCP-2 and adenosine triphosphate analysis. Results: The BDL rats showed an increase of the liver UCP-2 expression compared with PF and AL rats (P < 0 05) 4 d postoperatively. Liver adenosine triphosphate in BDL rats showed a decrease compared with sham-operated controls at all intervals < 0 05) Plasma glucose concentration in BDL rats was decreased compared with the other groups. Free fatty acids showed an initial increase 2 d postoperatively compared with sham-operated controls and PF and AL rats (P < 0 05) at the corresponding time point Conclusion: Obstructive jaundice is associated with an early upregulation of liver UCP-2. reduced liver adenosine triphosphate content, and decreased plasma glucose concentration, supporting the hypothesis that obstructive Jaundice results in impaired energy homeostasis in the liver. which might cause decreased glucose output and hypoglycemia as a consequence (C) 2010 Elsevier Inc. All flats reserved (Less)
- Subjects :
- Blood Glucose
Male
Muscle tissue
medicine.medical_specialty
Bilirubin
Endocrinology, Diabetes and Metabolism
medicine.medical_treatment
Fatty Acids, Nonesterified
Biology
Hypoglycemia
Ion Channels
Mitochondrial Proteins
Rats, Sprague-Dawley
chemistry.chemical_compound
Adenosine Triphosphate
Downregulation and upregulation
Internal medicine
Blood plasma
medicine
Animals
Insulin
Uncoupling protein
Uncoupling Protein 2
Postoperative Period
Muscle, Skeletal
Cholestasis
Nutrition and Dietetics
Bile duct
Blotting, Northern
medicine.disease
Rats
Up-Regulation
Disease Models, Animal
medicine.anatomical_structure
Endocrinology
Liver
chemistry
Subjects
Details
- ISSN :
- 08999007
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Nutrition
- Accession number :
- edsair.doi.dedup.....c583a8f6acaba77035517c85b13ce308