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June 28 2022

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A compound helps to rebuild myelin in multiple sclerosis patients

In the latest study on mice, a team observed an appropriately modified flavonoid capable of stimulating the formation of new myelin.

Gianluca Ricciodi Gianluca Riccio
in Medicine
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A compound helps to rebuild myelin in multiple sclerosis patients
16 September 2019
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A team of researchers created a compound that in tests on mice was able to promote the reconstruction of the myelin sheath that surrounds the axons of neurons.

Myelin formation corrects the damage caused by ailments such as multiple sclerosis, otherwise known as plaque sclerosis.

What is myelin?

Myelin is a membrane structure that surrounds the axons of neurons (the parts of cells responsible for transmitting electrical signals). The myelin lamellae are small protrusions that are repeated every 12 nanometers along the entire length of the axons, forming a real “sheath”.

This medical discovery it can pave the way for a new treatment that combats all conditions leading to demyelination, such as multiple sclerosis (MS).

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The study was published in the scientific journal Glia.

What happens in multiple sclerosis

The definition of multiple sclerosis is that of an autoimmune inflammatory condition which includes the loss of myelin around the axons, and destroys the ability of the nerves to transmit electrical impulses.

Only the nerves of the central nervous system are affected by multiple sclerosis. The regions of the nervous system that lose myelin are called "lesions" and the term "multiple sclerosis" indicates the presence of widespread lesions.

multiple sclerosis

The role of hyaluronic acid

The team found that hyaluronic acid accumulates in the brain of multiple sclerosis patients. In disease, this molecule fragments and concentrates in small parts close to the lesions. This accumulation constitutes a signal that blocks the genes responsible for myelin production.

The team explored possible solutions to block the accumulation of hyaluronic acid and thus promote remyelination.

The discovery of S3

In the latest study in mice, the team observed that S3, a suitably modified flavonoid is capable of hyaluronic acid effects and stimulating the formation of new myelin.

"Not only does S3 promote remyelination and return myelin, but it also stimulates the speed of transmission of electrical signals from axons," says Sherman.

Phase two has already started: the team is administering the compound to a rare population of macaques with a multiple sclerosis-like syndrome known as 'Japanese macaque encephalomyelitis'. A syndrome that, just like multiple sclerosis, causes multiple lesions and prevents axons from transmitting signals. The result is the same: as with multiple sclerosis it leads to death.

multiple sclerosis
The Japanese macaque, intermediate step towards the experimentation of S3 on humans.

"If we have confirmation, this study brings us great hope: we are less than a year away from clinical trials on humans," explains the first author of the study Larry sherman, in a recent press conference.

tags: Flavonoid IMyelinmedical researchMultiple sclerosis
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