Tags

Type your tag names separated by a space and hit enter

Disability in multiple sclerosis is related to normal appearing brain tissue MTR histogram abnormalities.
Mult Scler 2003; 9(6):566-73MS

Abstract

BACKGROUND

Magnetization transfer ratio (MTR) histogram analysis provides a global measure of disease burden in multiple sclerosis (MS). MTR abnormalities in normal appearing brain tissue (NABT) provide quantitative information on the extent of tissue damage undetected by conventional T2-weighted (T2W) magnetic resonance imaging (MRI).

AIMS

1) To compare the MTR histograms from NABT across a broad spectrum of relapse onset MS patients, including relapsing-remitting (RR) MS (including newly diagnosed and benign subgroups) and secondary progressive (SP) MS. 2) To determine the relationship between clinical disability and NABT MTR histograms.

METHODS

2D spin echo magnetization transfer imaging was performed on 70 RRMS and 25 SPMS patients and compared with 63 controls. MTR histograms were acquired for NABT after extracting lesions and cerebrospinal fluid (CSF). T2W images were used to measure the brain parenchymal fraction (BPF) and T2 lesion load.

RESULTS

MS patients had a disease duration ranging from 0.5 to 37 years and an Expanded Disability Status Scale (EDSS) score ranging from 0 to 8.5. There was a significant decrease in NABT mean MTR (+/- standard deviation) compared with controls (33.07 pu +/- 1.06 versus 34.26 pu +/- 0.47; P < 0.001) with an effect size of 2.56. The reduction in NABT mean MTR varied among patient groups from 4.9% for SPMS, 3% for all RRMS, 2.7% for early RRMS and 2.5% for benign MS, compared with controls. NABT mean MTR correlated significantly with T2 lesion load (r = -0.82) and BPF (r = 0.58). EDSS score correlated with NABT mean MTR (r = -0.43), BPF (r = -0.33) and with T2 lesion load (r = 0.59). Multivariate analysis using NABT MTR peak height, T2 lesion load and BPF combined only accounted for 38% of the variance in the EDSS (r = 0.62; P < 0.001). Disease duration accounted for an additional 14% of variance in the EDSS (r = 0.72; P < 0.001).

CONCLUSIONS

There is evidence of diffuse abnormalities in NABT in addition to global brain atrophy in relapse onset MS patients, including those with recently diagnosed RRMS and benign MS. The abnormalities are greatest in patients with the more disabling SPMS. Atrophy, NABT and lesion abnormalities are all partly correlated; the processes marked by these MR measures all contribute to disability in MS, providing complementary information relevant to the complex pathological processes that occur in MS.

Authors+Show Affiliations

NMR Research Unit, Institute of Neurology, University College London, Queen Square, London WC1N 3BG, UK. trabouls@interchange.ubc.caNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

14664468

Citation

Traboulsee, A, et al. "Disability in Multiple Sclerosis Is Related to Normal Appearing Brain Tissue MTR Histogram Abnormalities." Multiple Sclerosis (Houndmills, Basingstoke, England), vol. 9, no. 6, 2003, pp. 566-73.
Traboulsee A, Dehmeshki J, Peters KR, et al. Disability in multiple sclerosis is related to normal appearing brain tissue MTR histogram abnormalities. Mult Scler. 2003;9(6):566-73.
Traboulsee, A., Dehmeshki, J., Peters, K. R., Griffin, C. M., Brex, P. A., Silver, N., ... Miller, D. H. (2003). Disability in multiple sclerosis is related to normal appearing brain tissue MTR histogram abnormalities. Multiple Sclerosis (Houndmills, Basingstoke, England), 9(6), pp. 566-73.
Traboulsee A, et al. Disability in Multiple Sclerosis Is Related to Normal Appearing Brain Tissue MTR Histogram Abnormalities. Mult Scler. 2003;9(6):566-73. PubMed PMID: 14664468.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Disability in multiple sclerosis is related to normal appearing brain tissue MTR histogram abnormalities. AU - Traboulsee,A, AU - Dehmeshki,J, AU - Peters,Kevin R, AU - Griffin,C M, AU - Brex,P A, AU - Silver,N, AU - Ciccarrelli,O, AU - Chard,D T, AU - Barker,G J, AU - Thompson,A J, AU - Miller,D H, PY - 2003/12/11/pubmed PY - 2004/2/27/medline PY - 2003/12/11/entrez SP - 566 EP - 73 JF - Multiple sclerosis (Houndmills, Basingstoke, England) JO - Mult. Scler. VL - 9 IS - 6 N2 - BACKGROUND: Magnetization transfer ratio (MTR) histogram analysis provides a global measure of disease burden in multiple sclerosis (MS). MTR abnormalities in normal appearing brain tissue (NABT) provide quantitative information on the extent of tissue damage undetected by conventional T2-weighted (T2W) magnetic resonance imaging (MRI). AIMS: 1) To compare the MTR histograms from NABT across a broad spectrum of relapse onset MS patients, including relapsing-remitting (RR) MS (including newly diagnosed and benign subgroups) and secondary progressive (SP) MS. 2) To determine the relationship between clinical disability and NABT MTR histograms. METHODS: 2D spin echo magnetization transfer imaging was performed on 70 RRMS and 25 SPMS patients and compared with 63 controls. MTR histograms were acquired for NABT after extracting lesions and cerebrospinal fluid (CSF). T2W images were used to measure the brain parenchymal fraction (BPF) and T2 lesion load. RESULTS: MS patients had a disease duration ranging from 0.5 to 37 years and an Expanded Disability Status Scale (EDSS) score ranging from 0 to 8.5. There was a significant decrease in NABT mean MTR (+/- standard deviation) compared with controls (33.07 pu +/- 1.06 versus 34.26 pu +/- 0.47; P < 0.001) with an effect size of 2.56. The reduction in NABT mean MTR varied among patient groups from 4.9% for SPMS, 3% for all RRMS, 2.7% for early RRMS and 2.5% for benign MS, compared with controls. NABT mean MTR correlated significantly with T2 lesion load (r = -0.82) and BPF (r = 0.58). EDSS score correlated with NABT mean MTR (r = -0.43), BPF (r = -0.33) and with T2 lesion load (r = 0.59). Multivariate analysis using NABT MTR peak height, T2 lesion load and BPF combined only accounted for 38% of the variance in the EDSS (r = 0.62; P < 0.001). Disease duration accounted for an additional 14% of variance in the EDSS (r = 0.72; P < 0.001). CONCLUSIONS: There is evidence of diffuse abnormalities in NABT in addition to global brain atrophy in relapse onset MS patients, including those with recently diagnosed RRMS and benign MS. The abnormalities are greatest in patients with the more disabling SPMS. Atrophy, NABT and lesion abnormalities are all partly correlated; the processes marked by these MR measures all contribute to disability in MS, providing complementary information relevant to the complex pathological processes that occur in MS. SN - 1352-4585 UR - https://www.unboundmedicine.com/medline/citation/14664468/Disability_in_multiple_sclerosis_is_related_to_normal_appearing_brain_tissue_MTR_histogram_abnormalities_ L2 - http://journals.sagepub.com/doi/full/10.1191/1352458503ms958oa?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -