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β-Hydroxybutyric acid, also known as 3-hydroxybutyric acid or BHB, is an organic compound and a beta hydroxy acid with the chemical formula CH 3 CH(OH)CH 2 CO 2 H; its conjugate base is β-hydroxybutyrate, also known as 3-hydroxybutyrate. β-Hydroxybutyric acid is a chiral compound with two enantiomers: D-β-hydroxybutyric acid and L-β-hydroxybutyric acid.
The resulting very high levels of ketone bodies lower the pH of the blood plasma, which reflexively triggers the kidneys to excrete urine with very high acid levels. The high levels of glucose and ketones in the blood also spill passively into the urine (due to the inability of the renal tubules to reabsorb glucose and ketones from the tubular ...
Higher levels of ketones in the urine indicate that the body is using fat as the major source of energy. Ketone bodies that commonly appear in the urine when fats are burned for energy are acetoacetate and beta-hydroxybutyric acid. Acetone is also produced and is expired by the lungs. [1]
Both acetoacetate and beta-hydroxybutyrate are acidic, and, if levels of these ketone bodies are too high, the pH of the blood drops, resulting in ketoacidosis. Ketoacidosis is known to occur in untreated type I diabetes (see diabetic ketoacidosis ) and in alcoholics after prolonged binge-drinking without intake of sufficient carbohydrates (see ...
Hydroxybutyric acid is a group of four-carbon organic compounds that have both hydroxyl and carboxylic acid functional groups. [1] They can be viewed as derivatives of butyric acid . The carboxylate anion and the esters of hydroxybutyric acids are known as hydroxybutyrates . β-hydroxybutyric acid is relevant to human health as it is a member ...
This monoester links the same beta-hydroxybutyric acid found in ketone salts but bonded with D 1,3-butanediol (also called R 1,3 butanediol) instead of bases (salts). The first part of the metabolism of this monoester takes place in the digestive system (fast release), followed by the remaining portion taking place in the liver (slow release). [2]
Glucose levels usually exceed 13.8 mmol/L or 250 mg/dL. [30] β-hydroxybutyrate (the conjugate base of β-hydroxybutyric acid, drawn above) despite chemically containing a carboxylate group instead of a ketone, is the principal "ketone body" in diabetic ketoacidosis.
Maintain calcium and phosphorus levels 1.7-4.1 ... social high 0.5 × 10 −3: reduced coordination ... beta-Hydroxybutyric acid: 1-6 ...