Strain information
 NBRP Rat No: 0003  Strain name: DMY/Kyo  Commmon Name: DMY, demyelination rat Rat Genome Database
Principal Investigator:  Tadao Serikawa  Graduate School of Medicine, Kyoto University       Yoshidakonoe-cho, Sakyo-ku    606-8501 Kyoto     JAPAN
Tel: 075-753-4360    Fax: 075-753-4409 Email:
Preservation Status:   Embryo        Sperm       Living Animals ../images/Photos/DMY/341a%20(Large).jpg ../images/Photos/DMY/341z%20(Large).jpg
Coat Color  albino (c)
Inbred Generations  F?+46 (March 2012)
Usage Restrictions  The recipient of BIOLOGICAL RESOURCE shall obtain a prior written consent on use of it from the DEPOSITOR.
For a commercial use of this resource, a new contract must be concluded between the depositor and the recipient.
Genetic Status
 Inbred  Segregating  Congenic  Consomic  Recombinant
 Coisogenic  Spont. Mutant  Transgene  Ind. Mutant  Category Other 
Comercial Availability
Research Category
 Diabetes Obesity  Neurobiology  Ophthalmology  Dentistry  Cardio Hypertension
 Cancer  Metabolism  Otorhinology  Immunology  Infectious
 Osteosis  Internal Organ  Dermatology  Reproduction  Development
 Behavior  Hematology  Urology  Pharmacology  Research Area Others 
 Control Strain  Marker Strain
Gene Affected
Origin From a closed colony of Sprague Dawley (SD) rats in the laboratory animal facilities of the Universitat Autónoma de Barcelona (Bellaterra Campus) in 1991. Via Institute Pasteur, Paris, to Kyoto University (1996).
Strain characteristics DMY rats exhibit hind limb ataxia and severe myelin breakdown in the CNS during the late stage of postnatal myelination (Kuramoto, 1996; Kuwamura, 2004). By genetic analysis, the causative gene dmy (demyelination) was mapped to rat chromosome 17, very close to the prolactin (Prl) locus (Kuramoto, 1996) and the corresponding mouse genomic region was determined on mouse chromosome 13 (Kitada, 2000). DMY rats show an abnormal ion accumulation and significant upregulation of iron regulatory proteins in the spinal cord white matter (Izawa, 2010). (Oct 8, 2010)
Breeding Conditions Maintained in heterozygous condition.
Genotyping Genotyping protocol for Mrs2
References Kuramoto T, Sotelo C, Yokoi N, Serikawa T, Gonalons Sintes E, Canto Martorell J, Guenet J-L.
A rat mutation producing demyelination (dmy) maps to chromosome 17.
Mamm Genome. 7: 890-894, 1996.

Kitada K. et al
Determination of the mouse homologous region for the rat dmy locus.
J Exp Anim. Sci. 41:40-43, 2000.

Kuwamura M, Kanehara T, Tokuda S, Kumagai D, Yamate J, Kotani T, Nakane Y, Kuramoto T, Serikawa T
Immunohistochemical and morphometrical studies on myelin breakdown in the demyelination (dmy) mutant rat.
Brain Res. 2004 Oct 1;1022(1-2):110-6.

Izawa T, Yamate J, Franklin RJ, Kuwamura M.
Abnormal iron accumulation is involved in the pathogenesis of the demyelinating dmy rat but not in the hypomyelinating mv rat.
Brain Res. 2010 Aug 19;1349:105-14.

Kuramoto T, Kuwamura M, Tokuda S, Izawa T, Nakane Y, Kitada K, Akao M, Guénet JL, Serikawa T.
A mutation in the gene encoding mitochondrial Mg²+ channel MRS2 results in demyelination in the rat.
PLoS Genet. 2011 Jan 6;7(1):e1001262.
Additional strain information DMY