How is valproic acid synthesized?
Valproic acid, 2-propylvaleric acid (9.4. 3), is synthesized by the alkylation of cyanoacetic ester with two moles of propylbromide, to give dipropylcyanoacetic ester (9.4. 1). Hydrolysis and decarboxylation of the carbethyoxy group gives dipropylacetonitrile (9.4.
Which CYP enzymes metabolize valproic acid?
Valproic acid has been reported to inhibit the drug oxidation and elevate the plasma levels of several drugs including phenytoin, phenobarbital, diazepam and lorazepam [9-12]. These drugs are mainly metabolized by CYP2C9, CYP2C19, CYP2D6, CYP3A4 isoforms of cytochrome P450 system and glucuronidation.
What is valproic acid derived from?
Valproic acid (VPA) is a branched short-chain fatty acid derived from naturally occurring valeric acid.
Is valproic acid a protein?
Because valproic acid (VPA) is highly bound to plasma protein, several variables affecting binding will significantly alter the quantity of free drug which is pharmacologically active. Therefore, total VPA plasma concentrations do not reflect the therapeutic strength of the drug in tissue.
How is valproic acid excreted?
Valproic acid concentration in saliva is less than and unrelated to the free drug concentration in plasma. The drug is excreted into breast milk and evidence suggests that it also crosses the placenta.
How is valproic acid metabolized?
VPA is a fatty acid and can be metabolized via endogenous pathways in the mitochondria. It has been observed that some of the mitochondrial metabolites of VPA generated by this pathway are hepatotoxic. VPA crosses the membrane of liver mitochondria via the facilitation of carnitine.
Where is valproic acid manufactured?
Valproic Acid | compare suppliers & send inquiries for free
| TIEFENBACHER API + Ingredients Type: Distributor Produced in: Germany | Distributor | + 1 |
|---|---|---|
| PCAS Type: Producer Produced in: France | Producer | + 0 |
| Opocrin S-C Plant Type: Producer Produced in: Italy | Producer | + 1 |
What is the protein binding of valproate?
Valproic acid (therapeutic range of 50–100 μg/mL) is extensively bound to serum proteins, mainly albumin [27]. Fluctuations in protein binding occur within the therapeutic range due to saturable binding phenomenon leading to a wide variation in free fraction from 10% to 50% [28].
What is the mechanism of action of valproic acid?
Mechanism of Action Valproic acid exhibits its pharmacologic effects in a couple of ways, such as by acting on GABA (γ aminobutyric acid) levels in the CNS, blocking voltage-gated ion channels, and inhibiting histone deacetylase.
What is the chemical structure of valproic acid?
Valproic acid is a branched short-chain fatty acid (SCFA) made from valeric acid….Valproate.
| Clinical data | |
|---|---|
| ECHA InfoCard | 100.002.525 |
| Chemical and physical data | |
| Formula | C8H16O2 |
| Molar mass | 144.214 g·mol−1 |
What is the mechanism of action for Depakote?
Scientists do not know the mechanism of action of valproic acid. The most popular theory is that valproic acid exerts its effects by increasing the concentration of gamma-aminobutyric acid (GABA) in the brain. GABA is a neurotransmitter, a chemical that nerves use to communicate with one another.