Grey Matter Disease Predicts Disability

G
Do you have gray matter damage? It matters. #MSBlog #MSResearch

“This small study confirms what has already been published about the importance of gray matter pathology and MS prognosis. Gray matter, matters.”


“Brain atrophy which includes loss of gray matter is an important metric that is beginning to be included in clinical decision algorithms regarding treatment. The presence of gray  matter atrophy at baseline, and progressive atrophy on treatment predicts a poor outcome. The problem is getting the metric to be reported by our radiologists. The main problem is that the current measures of brain atrophy are too variable in the short-term to be used on individual MSers.”


Epub: Filippi et al. Gray matter damage predicts the accumulation of disability 13 years later in MS.Neurology. 2013 Oct 11.


OBJECTIVES: To assess the value of conventional and magnetization transfer (MT) MRI measures of white matter (WM) and gray matter (GM) damage, and their 12-month change, in predicting long-term disability and cognitive impairment in multiple sclerosis (MS).



METHODS: Conventional and MT MRI brain scans were obtained at baseline and at 12 months in 73 MSers, who were followed prospectively with clinical visits and rating of the Expanded Disability Status Scale score and the MS severity score (MSSS) for a median period of 13.3 years. At 13-year follow-up, a neuropsychological assessment was also performed when possible. T2-hyperintense and T1-hypointense lesion volumes, GM fraction (GMF), WM fraction, thalamic fraction, average lesion MT ratio (MTR), average GM MTR, average normal-appearing WM MTR, and thalamic MTR were measured. Random forest and multivariable analyses were performed to identify the predictors of neurologic deterioration and cognitive impairment at 13 years.

RESULTS: At 13-year follow-up, 66% of MSers showed significant worsening of disability and 37% had worsened cognitively. The multivariable model, in which Expanded Disability Status Scale deterioration at final follow-up was the dependent variable, identified baseline GMF (odds ratio [OR] = 0.79, p = 0.01) as the only predictor of worsening of disability (C-index = 0.69). Baseline disease duration (OR = 1.50, p = 0.08) and average GM MTR (OR = 0.87, p = 0.03) were independent variables associated with cognitive deterioration (C-index = 0.97). Baseline MSSS (β = 0.50, p < 0.0001) and baseline GMF (β = -0.32, p = 0.0005) predicted MSSS at follow-up (r2 = 0.45).

CONCLUSIONS: GM damage is one of the key factors associated with long-term accumulation of disability and cognitive impairment in MS.
09 Jul 2013
Methods: These investigators used a selective reminding paradigm to determine whether deficient initial learning or delayed retrieval represents the primary memory deficit in 44 persons with MS. Brain atrophy was measured 
28 May 2013
The only way we are going to get brain atrophy up the agenda is for you to ask your neurologist about whether or not you have evidence of brain atrophy on your MRI. Unless the atrophy is gross atrophy, i.e. visible to the 

About the author

Prof G

Professor of Neurology, Barts & The London. MS & Preventive Neurology thinker, blogger, runner, vegetable gardener, husband, father, cook and wine & food lover.

1 comment

  • Any thoughts on how to stop the grey matter loss / repair the damage? As someone with MS, that would interest me more than just keep being told that brain atrophy is the cause of disability. I have no medical training but could have reached the same concluison. The bit I need help on is researchers finding out how to stop the process and how to repair the damage / reverse the disability. I'm guessing you'll tell me what I'm after is a pipedream. If so, why are researchers doing this sort of research i.e stating the blindingly obvious?

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