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Muscle imaging in muscle dystrophies produced by mutations in the EMD and LMNA genes

Lookup NU author(s): Professor Jordi Diaz Manera, Aida Alejaldre, Dr Nuria Muelas Gomez, Roberto Fernandez-Torron

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Abstract

© 2015 Elsevier B.V. Identifying the mutated gene that produces a particular muscle dystrophy is difficult because different genotypes may share a phenotype and vice versa. Muscle MRI is a useful tool to recognize patterns of muscle involvement in patients with muscle dystrophies and to guide the diagnosis process. The radiologic pattern of muscle involvement in patients with mutations in the EMD and LMNA genes has not been completely established. Our objective is to describe the pattern of muscle fatty infiltration in patients with mutations in the EMD and in the LMNA genes and to search for differences between the two genotypes that could be helpful to guide the genetic tests. We conducted a national multicenter study in 42 patients, 10 with mutations in the EMD gene and 32 with mutations in the LMNA gene. MRI or CT was used to study the muscles from trunk to legs. Patients had a similar pattern of fatty infiltration regardless of whether they had the mutation in the EMD or LMNA gene. The main muscles involved were the paravertebral, glutei, quadriceps, biceps, semitendinosus, semimembranosus, adductor major, soleus, and gastrocnemius. Involvement of peroneus muscle, which was more frequently affected in patients with mutations in the EMD gene, was useful to differentiate between the two genotypes. Muscle MRI/CT identifies a similar pattern of muscle fatty infiltration in patients with mutations in the EMD or the LMNA genes. The involvement of peroneus muscles could be useful to conduct genetic analysis in patients with an EDMD phenotype.


Publication metadata

Author(s): Diaz-Manera J, Alejaldre A, Gonzalez L, Olive M, Gomez-Andres D, Muelas N, Vilchez JJ, Llauger J, Carbonell P, Marquez-Infante C, Fernandez-Torron R, Poza JJ, Lopez de Munain A, Gonzalez-Quereda L, Mirabet S, Clarimon J, Gallano P, Rojas-Garcia R, Gallardo E, Illa I

Publication type: Article

Publication status: Published

Journal: Neuromuscular Disorders

Year: 2016

Volume: 26

Issue: 1

Pages: 33-40

Print publication date: 01/01/2016

Online publication date: 22/10/2015

Acceptance date: 06/10/2015

ISSN (print): 0960-8966

ISSN (electronic): 1873-2364

Publisher: Elsevier Ltd

URL: https://doi.org/10.1016/j.nmd.2015.10.001

DOI: 10.1016/j.nmd.2015.10.001

PubMed id: 26573435


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