Another study showed that
acetoacetate and BHB were affected by increasing transamination of glutamate to aspartate and conversion to gamma-aminobutyric acid (10).
As can be seen, 15 (glucose, lactate, pyruvate,
acetoacetate, BHBA, fumaric acid, citric acid, choline, glycine, proline, isoleucine, leucine, urea, creatinine, and orotic acid) of the 33 potential biomarkers were also discovered in blood or milk in our previous studies [4,5].
This group had higher levels of
acetoacetate and acetate than the NGT group (Figure 4) and the highest level of 3-HIB; no differences in BCAAs were found (data not shown).
It is metabolized sequentially into 3-hydroxy-3-methylglutaryl-CoA and then into
acetoacetate (Figure 1) [9].
The conventional methods employed for the synthesis of substituted isoxazole-5(4H)ones, include cyclization of O-propioloyl oximes [27], reaction of ethyl
acetoacetate and hydroxylamine hydrochloride followed by the Knoevenagel condensation with aromatic aldehydes in two steps [28-30], condensation of substituted benzaldoximes and 1,3-dicarbonyl compounds [31], and reaction of [beta]-oxoesters with hydroxylamine and sodium hydroxide with subsequent addition of aqueous HCl followed by heating [32].
Peng et al., "
Acetoacetate induces hepatocytes apoptosis by the ROS-mediated MAPKs pathway in ketotic cows," Journal of Cellular Physiology, vol.
Ethyl
acetoacetate: A potential bio-based diluent for improving the cold flow properties of biodiesel from waste cooking oil.
Ketones (primarily beta-hydroxybutyrate and
acetoacetate) are formed in the liver from the newly released fatty acids, and released into the circulation, including into the brain during times of decreased glucose availability--a state characteristic of Alzheimer's disease.
Although urine ketone dipsticks tests routinely measure urinary
acetoacetate, they do not detect the ketone predominant in HG, which is [beta]-hydoxybutyric acid ([beta]-HBA).
Allelochemical ethyl 2-methyl
acetoacetate (EMA) induces oxidative damage and antioxidant responses in Phaeodactylum tricornutum.
Ketone bodies are three small water-soluble molecules of
acetoacetate, 3-hydroxybutyrate, and acetone.
The pKa of an
acetoacetate C-H is around 10.7; for a malonate, it is even higher (>13).