Biomaterial Database

Evidence for possible interrelationship between gluconeogenesis and ketogenesis? 1984

L Kümmel

Effects of ketogenic substrates on gluconeogenesis by rat hepatocytes were examined. D,L-3-Hydroxybutyrate (5 mM) stimulated gluconeogesis from lactate by 41%, the effect being the same as that of 5 mM acetate (43%). Acetoacetate up to 40 mM had no stimulating effect; conversely, it partially or completely abolished the observed stimulating effects of acetate, 3-hydroxybutyrate, or oleate. 3-Hydroxybutyrate also stimulated gluconeogenesis from serine by 70%, the effect being much higher than that of acetate (35%). No effect of 3-hydroxybutyrate or acetate on gluconeogenesis from pyruvate was seen. It is proposed that, in intact liver cells, pyruvate is transported into mitochondria in exchange for intramitochondrially generated acetoacetate, and that the mechanism proposed may be of physiological importance.

UI	MeSH Term	Description	Entries
D007773	Lactates	Salts or esters of LACTIC ACID containing the general formula CH3CHOHCOOR.
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
D009829	Oleic Acids	A group of fatty acids that contain 18 carbon atoms and a double bond at the omega 9 carbon.	Octadecenoic Acids,Acids, Octadecenoic,Acids, Oleic
D011773	Pyruvates	Derivatives of PYRUVIC ACID, including its salts and esters.
D011919	Rats, Inbred Strains	Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding.	August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D005943	Gluconeogenesis	Biosynthesis of GLUCOSE from nonhexose or non-carbohydrate precursors, such as LACTATE; PYRUVATE; ALANINE; and GLYCEROL.
D006885	Hydroxybutyrates	Salts and esters of hydroxybutyric acid.	Hydroxybutyric Acid Derivatives,Hydroxybutyric Acids,Acid Derivatives, Hydroxybutyric
D000085	Acetates	Derivatives of ACETIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain the carboxymethane structure.	Acetate,Acetic Acid Esters,Acetic Acids,Acids, Acetic,Esters, Acetic Acid
D000090	Acetoacetates	Salts and derivatives of acetoacetic acid.