Biomaterial Database

Glucose transport and hypoxia-reoxygenation injury in the perfused rat liver. 1994

D G Le Couteur, and L P Rivory, and S M Pond

University of Queensland Department of Medicine, Brisbane, Australia.

During liver transplantation, oxidative stress occurs during hypoxia and reoxygenation of the donor organ. Chemical oxidative stress impairs cell membrane transport. Therefore, in this study the influence of hypoxia and reoxygenation on hepatocellular membrane transport was investigated. Specifically, glucose transport was studied in the perfused rat liver using the multiple indicator-dilution technique. First, it was observed that in normal rat livers, glucose transport was rapid but saturable (Km 48 +/- 10 mmol/L and Vmax 9.4 +/- 0.9 mumol/s per g of liver). To stimulate hypoxia and reoxygenation, livers were perfused for 30 min with nitrogen-saturated buffer and then with oxygen-saturated buffer for 20 min. The livers from fed rats were protected from hypoxia-reoxygenation injury whereas those from fasted rats were highly susceptible to injury as determined by lactate dehydrogenase release. After reoxygenation, the rate of glucose influx decreased significantly by approximately 50% in the fasted livers (P < 0.001) but was unaffected in the fed livers. This impairment of the hepatocellular transport of glucose, which could be secondary to oxidative injury to the hepatocyte membrane, has implications for the function of donor livers that have sustained hypoxia-reoxygenation ('preservation') injury during transplantation.

UI	MeSH Term	Description	Entries
D007201	Indicator Dilution Techniques	Methods for assessing flow through a system by injection of a known quantity of an indicator, such as a dye, radionuclide, or chilled liquid, into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed)	Dilution Techniques,Dilution Technics,Indicator Dilution Technics,Dilution Technic,Dilution Technic, Indicator,Dilution Technics, Indicator,Dilution Technique,Dilution Technique, Indicator,Dilution Techniques, Indicator,Indicator Dilution Technic,Indicator Dilution Technique,Technic, Dilution,Technic, Indicator Dilution,Technics, Dilution,Technics, Indicator Dilution,Technique, Dilution,Technique, Indicator Dilution,Techniques, Dilution,Techniques, Indicator Dilution
D008099	Liver	A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.	Livers
D008297	Male		Males
D009752	Nutritional Status	State of the body in relation to the consumption and utilization of nutrients.	Nutrition Status,Status, Nutrition,Status, Nutritional
D010477	Perfusion	Treatment process involving the injection of fluid into an organ or tissue.	Perfusions
D005215	Fasting	Abstaining from FOOD.	Hunger Strike,Hunger Strikes,Strike, Hunger,Strikes, Hunger
D005947	Glucose	A primary source of energy for living organisms. It is naturally occurring and is found in fruits and other parts of plants in its free state. It is used therapeutically in fluid and nutrient replacement.	Dextrose,Anhydrous Dextrose,D-Glucose,Glucose Monohydrate,Glucose, (DL)-Isomer,Glucose, (alpha-D)-Isomer,Glucose, (beta-D)-Isomer,D Glucose,Dextrose, Anhydrous,Monohydrate, Glucose
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001693	Biological Transport, Active	The movement of materials across cell membranes and epithelial layers against an electrochemical gradient, requiring the expenditure of metabolic energy.	Active Transport,Uphill Transport,Active Biological Transport,Biologic Transport, Active,Transport, Active Biological,Active Biologic Transport,Transport, Active,Transport, Active Biologic,Transport, Uphill
D015427	Reperfusion Injury	Adverse functional, metabolic, or structural changes in tissues that result from the restoration of blood flow to the tissue (REPERFUSION) following ISCHEMIA.	Ischemia-Reperfusion Injury,Injury, Ischemia-Reperfusion,Injury, Reperfusion,Reperfusion Damage,Damage, Reperfusion,Injury, Ischemia Reperfusion,Ischemia Reperfusion Injury,Ischemia-Reperfusion Injuries,Reperfusion Damages,Reperfusion Injuries