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Phenotypes Associated with This Genotype
Genotype
MGI:3577843
Allelic
Composition
Mmetm1Cge/Mmetm1Cge
Genetic
Background
involves: 129S4/SvJae * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mmetm1Cge mutation (0 available); any Mme mutation (61 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
liver/biliary system
• diffuse hemorrhagic necrosis at death after treatment with combined endotoxin lipopolysaccharide and D-galactosamine or the combination of TNFalpha and Il1b

nervous system
• myelinated fibers of femoral quadriceps nerves and cutaneous saphenous nerves appear more densely packed with smaller extracellular spaces
• however, femoral quadriceps nerves and cutaneous saphenous nerves of 13-14 month old mice appear grossly normal, with normal myelinated nerve fiber density and nerve fiber size distribution
• axons of Remak fibers are usually separated by Schwann cell process in wild-type mice, however such separating Schwann cell protrusions are rare in mutants and axons often show direct contacts with neighboring axons indicating ensheathment of Remak bundles
• smaller internodal, non-compact myelin domains, like Schmidt-Lantermann incisures, are seen
• thick myelin sheaths, particularly of large and medium-sized caliber axons
• however, degenerative features such as onion bulb cells, denervated Schwann cells, and myelin degeneration are not seen and nerve conduction studies show no differences from wild-type mice

homeostasis/metabolism
• amyloid beta40 and 42 protein levels are elevated in mutant vs controls at 3-6 and at 11 months of age
• mice have elevated plasma levels of amyloid beta 42 and 40 relative to controls

cellular
• diffuse hemorrhagic necrosis at death after treatment with combined endotoxin lipopolysaccharide and D-galactosamine or the combination of TNFalpha and Il1b

behavior/neurological
N
• mice do not show obvious abnormalities in motor performance or coordination

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
Alzheimer's disease DOID:10652 J:69830


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory