1. The metabolism of glucose, glutamine and ketone-bodies was studied in the small intestine of rats after 5 days of hyperthyroidism. 2. Portal-drained visceral bloodflow increased by 20.1% (P < 0.05) in hyperthyroid rats and was accompanied by a decrease in the arteriovenous concentration difference of glutamine (25.7%, P < 0.05), glutamate (22.0%, P < 0.05), alanine (20.9%, P < 0.05) and ammo...

Purpose: Ketone bodies are energy substrates produced by the liver during prolonged fasting or low-carbohydrate diet. The ingestion of a ketone ester (KE) rapidly increases blood ketone levels independent of nutritional status. KE has recently been shown to improve exercise performance, but whether it can also promote post-exercise muscle protein or glycogen synthesis is unknown. Methods: Eight...

1. In short- and long-term diabetic rats there is a marked increase in size of both the small intestine and colon, which was accompanied by marked decreases (P less than 0.001) and increases (P less than 0.001) in the arterial concentrations of glutamine and ketone bodies respectively. 2. Portal-drained viscera blood flow increased by approx. 14-37% when expressed as ml/100 g body wt., but was ...

BACKGROUND We previously developed an E. coli strain that overproduces medium-chain methyl ketones for potential use as diesel fuel blending agents or as flavors and fragrances. To date, the strain's performance has been optimized during growth with glucose. However, lignocellulosic biomass hydrolysates also contain a substantial portion of hemicellulose-derived xylose, which is typically the s...

We report the use of a cyclic carbodiphosphorane catalyst for ketone and imine hydroboration reactions. Ketone reactions are particularly rapid, typically reaching completion within 15 min using 1 mol % loading at 25 °C. To our knowledge, this represents first as an organocatalyst. The exhibited superior catalytic activity in comparison to other neutral carbon nucleophiles tested, including N-h...

1. The formation of acetoacetate, beta-hydroxybutyrate and glucose was measured in the isolated perfused rat liver after addition of fatty acids. 2. The rates of ketone-body formation from ten fatty acids were approximately equal and independent of chain length (90-132mumol/h per g), with the exception of pentanoate, which reacted at one-third of this rate. The [beta-hydroxybutyrate]/[acetoacet...

During states of low carbohydrate intake, mammalian ketone body metabolism transfers energy substrates originally derived from fatty acyl chains within the liver to extrahepatic organs. We previously demonstrated that the mitochondrial enzyme coenzyme A (CoA) transferase [succinyl-CoA:3-oxoacid CoA transferase (SCOT), encoded by nuclear Oxct1] is required for oxidation of ketone bodies and that...