RGD Reference Report - Characterization of dystrophin deficient rats: a new model for Duchenne muscular dystrophy. - Rat Genome Database

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Characterization of dystrophin deficient rats: a new model for Duchenne muscular dystrophy.

Authors: Larcher, Thibaut  Lafoux, Aude  Tesson, Laurent  Remy, Séverine  Thepenier, Virginie  François, Virginie  Le Guiner, Caroline  Goubin, Helicia  Dutilleul, Maéva  Guigand, Lydie  Toumaniantz, Gilles  De Cian, Anne  Boix, Charlotte  Renaud, Jean-Baptiste  Cherel, Yan  Giovannangeli, Carine  Concordet, Jean-Paul  Anegon, Ignacio  Huchet, Corinne 
Citation: Larcher T, etal., PLoS One. 2014 Oct 13;9(10):e110371. doi: 10.1371/journal.pone.0110371. eCollection 2014.
RGD ID: 12880034
Pubmed: PMID:25310701   (View Abstract at PubMed)
PMCID: PMC4195719   (View Article at PubMed Central)
DOI: DOI:10.1371/journal.pone.0110371   (Journal Full-text)

A few animal models of Duchenne muscular dystrophy (DMD) are available, large ones such as pigs or dogs being expensive and difficult to handle. Mdx (X-linked muscular dystrophy) mice only partially mimic the human disease, with limited chronic muscular lesions and muscle weakness. Their small size also imposes limitations on analyses. A rat model could represent a useful alternative since rats are small animals but 10 times bigger than mice and could better reflect the lesions and functional abnormalities observed in DMD patients. Two lines of Dmd mutated-rats (Dmdmdx) were generated using TALENs targeting exon 23. Muscles of animals of both lines showed undetectable levels of dystrophin by western blot and less than 5% of dystrophin positive fibers by immunohistochemistry. At 3 months, limb and diaphragm muscles from Dmdmdx rats displayed severe necrosis and regeneration. At 7 months, these muscles also showed severe fibrosis and some adipose tissue infiltration. Dmdmdx rats showed significant reduction in muscle strength and a decrease in spontaneous motor activity. Furthermore, heart morphology was indicative of dilated cardiomyopathy associated histologically with necrotic and fibrotic changes. Echocardiography showed significant concentric remodeling and alteration of diastolic function. In conclusion, Dmdmdx rats represent a new faithful small animal model of DMD.

RGD Manual Disease Annotations    Click to see Annotation Detail View


Phenotype Annotations    Click to see Annotation Detail View

Mammalian Phenotype

Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
DmdRatabnormal heart echocardiography feature  IMP  RGD 
Dmdem1AngRatabnormal heart echocardiography feature  IMP  RGD 
SD-Dmdem1AngRatabnormal heart echocardiography feature  IMP  RGD 
DmdRatdecreased body length  IMP  RGD 
Dmdem1AngRatdecreased body length  IMP  RGD 
SD-Dmdem1AngRatdecreased body length  IMP  RGD 
DmdRatdecreased body mass index  IMP  RGD 
Dmdem1AngRatdecreased body mass index  IMP  RGD 
SD-Dmdem1AngRatdecreased body mass index  IMP  RGD 
DmdRatdecreased body weight  IMP  RGD 
Dmdem1AngRatdecreased body weight  IMP  RGD 
SD-Dmdem1AngRatdecreased body weight  IMP  RGD 
DmdRatdecreased heart weight  IMP  RGD 
Dmdem1AngRatdecreased heart weight  IMP  RGD 
SD-Dmdem1AngRatdecreased heart weight  IMP  RGD 
DmdRatdecreased locomotor activity  IMP  RGD 
Dmdem1AngRatdecreased locomotor activity  IMP  RGD 
SD-Dmdem1AngRatdecreased locomotor activity  IMP  RGD 
DmdRatdecreased skeletal muscle fiber diameter  IMP  RGD 
Dmdem1AngRatdecreased skeletal muscle fiber diameter  IMP  RGD 
SD-Dmdem1AngRatdecreased skeletal muscle fiber diameter  IMP  RGD 
DmdRatdecreased tibialis anterior weight  IMP  RGD 
Dmdem1AngRatdecreased tibialis anterior weight  IMP  RGD 
SD-Dmdem1AngRatdecreased tibialis anterior weight  IMP  RGD 
DmdRatincreased circulating creatine kinase level  IMP  RGD 
Dmdem1AngRatincreased circulating creatine kinase level  IMP  RGD 
SD-Dmdem1AngRatincreased circulating creatine kinase level  IMP  RGD 
DmdRatmuscle weakness  IMP  RGD 
Dmdem1AngRatmuscle weakness  IMP  RGD 
SD-Dmdem1AngRatmuscle weakness  IMP  RGD 
Objects Annotated

Genes (Rattus norvegicus)
Dmd  (dystrophin)
Dmdem1Ang  (dystrophin; TALEN-induced mutant1, Ang)

Genes (Mus musculus)
Dmd  (dystrophin, muscular dystrophy)

Genes (Homo sapiens)
DMD  (dystrophin)

SD-Dmdem1Ang  (NA)

Additional Information