Pseudohypericin

Pseudohypericin

Chemical structure of Pseudohypericin

Pseudohypericin is a naturally occurring compound found in the plant Hypericum perforatum, commonly known as St John's Wort. It is a member of the class of compounds known as naphthodianthrones, which are known for their potential antidepressant and antiviral properties.

Chemical Structure

Pseudohypericin is closely related to hypericin, another compound found in St John's Wort. The chemical structure of pseudohypericin consists of a naphthodianthrone core with additional hydroxyl and methyl groups. This structure is responsible for its biological activity and its ability to absorb light, which is a characteristic feature of naphthodianthrones.

Biological Activity

Pseudohypericin, along with hypericin, is believed to contribute to the antidepressant effects of St John's Wort. It is thought to work by inhibiting the reuptake of certain neurotransmitters in the brain, such as serotonin, dopamine, and norepinephrine.

In addition to its potential antidepressant effects, pseudohypericin has been studied for its antiviral properties. It has shown activity against a range of viruses, including HIV and hepatitis C virus. The mechanism of its antiviral action is not fully understood, but it is believed to involve the inhibition of viral replication.

Pharmacokinetics

The absorption, distribution, metabolism, and excretion of pseudohypericin in the human body are not fully characterized. However, it is known that pseudohypericin, like hypericin, is poorly absorbed when taken orally. This limits its bioavailability and may affect its therapeutic potential.

Safety and Side Effects

Pseudohypericin, as part of St John's Wort extracts, is generally considered safe when used at recommended doses. However, it can cause side effects such as photosensitivity, where the skin becomes more sensitive to sunlight. This is due to the compound's ability to absorb light and generate reactive oxygen species.

Research and Applications

Research into pseudohypericin is ongoing, with studies focusing on its potential use in treating depression, viral infections, and other conditions. Its role in photodynamic therapy is also being explored, where it could be used to target and destroy cancer cells.

Related pages

• Hypericin
• Hypericum perforatum
• Antidepressant
• Antiviral
• Photosensitivity