Wednesday, 24 December 2014

Remyelination with Citicoline

Skripuletz T, Manzel A, Gropengießer K, Schäfer N, Gudi V, Singh V, Salinas Tejedor L, Jörg S, Hammer A, Voss E, Vulinovic F, Degen D, Wolf R, Lee D, Pul R, Moharregh-Khiabani D, Baumgärtner W, Gold R, Linker RA, Stangel M. Pivotal role of choline metabolites in remyelination. Brain. 2014 Dec. pii: awu358. [Epub ahead of print]

Neuroprotective approaches for central nervous system regeneration have not been successful in clinical practice so far and compounds that enhance remyelination are still not available for patients with multiple sclerosis. The objective of this study was to determine potential regenerative effects of the substance cytidine-5'-diphospho (CDP)-choline in two different mouse animal models of multiple sclerosis. The effects of exogenously applied CDP-choline were tested in mouse myelin oligodendrocyte glycoprotein-induced experimental autoimmune encephalomyelitis. In addition, the cuprizone-induced mouse model of de- and remyelination was used to specifically test the hypothesis that CDP-choline directly increases remyelination. We found that CDP-choline ameliorated the disease course of experimental autoimmune encephalomyelitis and exerted beneficial effects on myelin, oligodendrocytes and axons. After cuprizone-induced demyelination, CDP-choline effectively enhanced myelin regeneration and reversed motor coordination deficits. The increased remyelination arose from an increase in the numbers of proliferating oligodendrocyte precursor cells and oligodendrocytes. Further in vitro studies suggest that this process is regulated by protein kinase C. We thus identified a new mechanism to enhance central nervous system remyelination via the choline pathway. Due to its regenerative action combined with an excellent safety profile, CDP-choline could become a promising substance for patients with multiple sclerosis as an add-on therapy.


Citicoline (CDP-choline; cytidine 5'-diphosphocholine) is an important intermediate in the biosynthesis of cell membrane phospholipids. Citicoline serves as a choline donor in the biosynthetic pathways of acetylcholine and neuronal membrane phospholipids, mainly phosphatidylcholine. This study suggests that it can promote remyelination. In EAE  there was an anti-inflammatory effect and less disease was accumulated and faster remyelination occurred in a chemical demyelination model. This molecule has been implicated as a neuroprotectant in other studies so could be a new tool to promote repair. But can this be translated.

3 comments:

  1. Let's hope this evolves from promising research to actual effective treatment! Thanks for the Christmas present.

    ReplyDelete
  2. It's interesting, that speculations on cholines and myelination circulated for years on resources like www.longecity.org/forum/
    Some of them based on research showing alpha-gpc to improve VEP latencies in glaucoma (although for me it's not clear, how myelination is related to this).

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    Replies
    1. Err, that was not Alpha-GPC, but again CDP-choline.
      http://www.ncbi.nlm.nih.gov/pubmed/12640353
      Oral citicoline treatment improves visual pathway function in glaucoma.

      Prof Mouse, any thoughts if this is related somehow to findings in study you cited?

      Delete

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