Divalproex Sodium Mechanism of Action | Detailed Explanation

Divalproex sodium is well known as an anti-epileptic drug. It can help maintain emotional stability, relieve neuropathic pain, prevent migraines, and improve cognitive function. How about the divalproex sodium mechanism of action and the precautions during taking? This article will explain in details.

Divalproex Sodium Mechanism of Action

Divalproex sodium mechanism of action mainly includes the following three parts.

1.It Can Regulate Neurotransmitters.

One of the divalproex sodium mechanism of action is regulating neurotransmitters. It can increase the concentration of gamma aminobutyric acid (AKA GMA) in the brain. GMA is an important inhibitory neurotransmitter that can suppress excessive excitation of neurons.

It also has an impact on the glutamate system. It can reduce glutamate mediated excitatory neurotransmission by regulating the function of glutamate receptors. Excessive glutamate can cause neuronal overexcitement and lead to abnormal neural activity such as seizures. Therefore, it can regulate the glutamate system and help maintain a balance between neural excitability and inhibition.

2.It Can Affect the Ion Channels.

Divalproex sodium mechanism of action also includes regulating sodium ion channels on the neuronal cell membrane. Sodium ion channels is very crucial in neurons’ generation and conduction of action. It can inhibit the excessive activation of sodium ion channels and stabilize the membrane potential of neuronal cells.

When neurons are stimulated, sodium ion channels open and causes sodium ion influx and generates action potentials. If sodium ion channels are abnormally opened or overactivated, it can cause neurons to repeatedly discharge and lead to epileptic seizures. Divalproex sodium acts on sodium ion channels and reduces their opening probability and preventing the abnormal discharges’ generation and propagation.

It also has a certain regulatory effect on calcium channels. Calcium ion channels are participating in various physiological processes such as neurotransmitter release and neuronal excitability regulation.

It can affect the release of neurotransmitters, and further regulate signal transmission between neurons. It can control the opening of certain types of calcium channels, reduce the excessive release of neurotransmitters, and thus control the excitability of neurons.

3.It Has an Impact on Gene Expression and Signaling Pathways.

Another divalproex sodium mechanism of action is regulating intracellular signaling pathways, such as the protein kinase C pathway. The protein kinase C pathway is important in regulating the growth, differentiation, and function of nerve cells.

The regulation of protein kinase C pathway by it may affect neuronal excitability and neuroplasticity, which can alter the activity of protein kinase C, thereby affecting the expression of related genes in nerve cells.

Besides, it can inhibit histone deacetylase and lead to high acetylation of histones. Therefore, it can increase the expression of certain genes and help prevent epileptic seizures and protect nerve cells.

Precautions For Taking Divalproex Sodium

What foods and medications should epilepsy patients avoid during the use of divalproex sodium?

1.Food

Firstly, avoid drinking alcohol. Alcohol can interfere with the metabolic process of divalproex sodium. Alcohol is mainly metabolized in the liver after entering the human body, and divalproex sodium is also metabolized through the liver.

Besides, alcohol itself has a nerve-stimulating effect and may reduce the effectiveness of divalproex sodium in controlling epileptic seizures and even induce epileptic seizures. Alcohol consumption can alter the activity of some enzymes in the liver. These enzymes are also involved in the metabolism of divalproex sodium and lead to unstable blood concentrations.

Secondly, avoid excessive intake of high-fat foods. High fat foods can affect the absorption rate of divalproex sodium. Because divalproex sodium is a lipid soluble drug, a large amount of oil may complicate the absorption process of the drug in the gastrointestinal tract and lead to fluctuations in blood drug concentration.

High fat foods such as fried foods, foods cooked with animal oil, etc., if consumed in large quantities, it may cause divalproex sodium to be absorbed too quickly. Thus, it will increase the risk of adverse reactions and affect the efficacy of the drug.

2.Medication

Firstly, avoid taking with salicylic acid drugs such as aspirin. Salicylic acid drugs such as aspirin compete with divalproex sodium for protein binding sites. This will increase the free blood concentration of divalproex sodium. When salicylic acid drugs are present, the binding of divalproex sodium to proteins decreases and the amount of free drugs increases. This may lead to drug poisoning.

Secondly, some antidepressants should be used with caution. The combination of divalproex sodium and some antidepressants may increase the risk of serotonin syndrome.

Thirdly, avoid taking with other drugs that may affect liver metabolism. It is mainly metabolized in the liver, and some drugs may affect the liver's metabolic enzyme system. If these drugs are used together, it may cause the blood concentration of divalproex sodium to be too high or too low, which will affect its efficacy and safety.

Conclusion

Divalproex sodium mechanism of action includes regulating neurotransmitters, affecting the ion channels, gene expression, and signaling pathways. There are also some precautions listed above, therefore, before taking it, patients should consult a doctor to understand if there will be any interaction with other food or medication.