Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-490
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dc.contributor.authorLollert, André-
dc.contributor.authorStihl, Clemens-
dc.contributor.authorHötker, Andreas-
dc.contributor.authorMengel, Eugen-
dc.contributor.authorKönig, Jochem-
dc.contributor.authorLaudemann, Katharina-
dc.contributor.authorGökce, Seyfullah-
dc.contributor.authorDüber, Christoph-
dc.contributor.authorStaatz, Gundula-
dc.date.accessioned2018-01-11T11:40:04Z-
dc.date.available2018-01-11T12:40:04Z-
dc.date.issued2018-
dc.identifier.urihttps://openscience.ub.uni-mainz.de/handle/20.500.12030/492-
dc.description.abstractOBJECTIVE: The objective of this study was to evaluate a quantitative method based on conventional T1-weighted magnetic resonance (MR) imaging to assess fatty muscular degeneration in patients with late-onset Pompe disease and to compare it with semi-quantitative visual evaluation (the Mercuri score). In addition, a long-term retrospective data analysis was performed to evaluate treatment response to enzyme replacement therapy with alglucosidase alfa. METHODS: MR images of the lumbar spine were acquired in 41 patients diagnosed with late-onset Pompe disease from 2006 through 2015. Two independent readers retrospectively evaluated fatty degeneration of the psoas and paraspinal muscles by applying the Mercuri score. Quantitative semi-automated muscle and fat tissue separation was performed, and inter-observer agreement and correlations with clinical parameters were assessed. Follow-up examinations were performed in 13 patients treated with alglucosidase alfa after a median of 39 months; in 7/13 patients, an additional follow-up examination was completed after a median of 63 months. RESULTS: Inter-observer agreement was high. Measurements derived from the quantitative method correlated well with Medical Research Council scores of muscle strength, with moderate correlations found for the 6-minute walk test, the 4-step stair climb test, and spirometry in the supine position. A significant increase in the MR-derived fat fraction of the psoas muscle was found between baseline and follow-up 1 (P = 0.016), as was a significant decrease in the performance on the 6-minute walk test (P = 0.006) and 4-step stair climb test (P = 0.034), as well as plasma creatine kinase (P = 0.016). No statistically significant difference in clinical or MR-derived parameters was found between follow-up 1 and follow-up 2. CONCLUSIONS: Quantification of fatty muscle degeneration using the semi-automated method can provide a more detailed overview of disease progression than semi-quantitative Mercuri scoring. MR-derived data correlated with clinical symptoms and patient exercise capacity. After an initial worsening, the fat fraction of the psoas muscle and performance on the 6-minute walk test stayed constant during long-term follow-up under enzyme replacement therapy.en_GB
dc.language.isoeng-
dc.rightsCC BYde_DE
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/-
dc.subject.ddc610 Medizinde_DE
dc.subject.ddc610 Medical sciencesen_GB
dc.titleQuantification of intramuscular fat in patients with late-onset Pompe disease by conventional magnetic resonance imaging for the long-term follow-up of enzyme replacement therapyen_GB
dc.typeZeitschriftenaufsatzde_DE
dc.identifier.urnurn:nbn:de:hebis:77-publ-577604-
dc.identifier.doihttp://doi.org/10.25358/openscience-490-
jgu.type.dinitypearticle-
jgu.type.versionPublished versionen_GB
jgu.type.resourceText-
jgu.organisation.departmentFB 04 Medizin-
jgu.organisation.number2700-
jgu.organisation.nameJohannes Gutenberg-Universität Mainz-
jgu.rights.accessrightsopenAccess-
jgu.journal.titlePLoS one-
jgu.journal.volume13-
jgu.journal.issue1-
jgu.pages.alternativee0190784-
jgu.publisher.year2018-
jgu.publisher.namePLoS-
jgu.publisher.placeLawrence, Kan.-
jgu.publisher.urihttp://dx.doi.org/10.1371/journal.pone.0190784-
jgu.publisher.issn1932-6203-
jgu.organisation.placeMainz-
jgu.subject.ddccode610-
opus.date.accessioned2018-01-11T11:40:04Z-
opus.date.modified2018-04-03T09:02:58Z-
opus.date.available2018-01-11T12:40:04-
opus.subject.dfgcode04-205-
opus.organisation.stringFB 04: Medizin: Klinik und Poliklinik für Diagnostische und Interventionelle Radiologiede_DE
opus.organisation.stringFB 04: Medizin: Institut für Med. Biometrie, Epidemologie und Informatikde_DE
opus.organisation.stringFB 04: Medizin: Kinderklinik und Kinderpoliklinikde_DE
opus.identifier.opusid57760-
opus.institute.number0419-
opus.institute.number0424-
opus.institute.number0429-
opus.metadataonlyfalse-
opus.type.contenttypeKeinede_DE
opus.type.contenttypeNoneen_GB
opus.affiliatedLollert, André-
opus.affiliatedHötker, Andreas-
opus.affiliatedMengel, Eugen-
opus.affiliatedKönig, Jochem-
opus.affiliatedLaudemann, Katharina-
opus.affiliatedDüber, Christoph-
opus.affiliatedStaatz, Gundula-
jgu.publisher.doi10.1371/journal.pone.0190784
jgu.organisation.rorhttps://ror.org/023b0x485
Appears in collections:JGU-Publikationen

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