There's a new open access (free) article on progesterone Progesterone Synthesis in the Nervous System: Implications for Myelination and Myelin Repair
If you're at all interested in progesterone I think it's well worth the read; there is a small section on MS and progesterone in the article.
And guys, you may be interested in this abstract: Progesterone: The Forgotten Hormone in Men?
Other progesterone effects in men include those on the central nervous system (CNS) (mainly mediated by 5alpha-reduced progesterone metabolites as so-called neurosteroids)
And in this commentary by Dr. John R Lee (now deceased) Hormone Balance in Males
And they wonder why people with MS lose the ability to remyelinate? Could it be in part due to declining hormone levels (including progesterone?) It's my understanding that in women at least progesterone levels start to decrease before estrogen levels start dropping.