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Phenotypes Associated with This Genotype
Genotype
MGI:3624942
Allelic
Composition
X/Yaa
Genetic
Background
(NZB x BXSB)F1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Yaa mutation (18 available); any Yaa mutation (21 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mean longevity for males is 166 +/- 6 days compared to 545 +/- 37 days for reciprocal hybrid males

immune system
• 20-fold increase in spleen weight by 20 weeks of age
• infiltrated with a mixed population of lymphocytes, plasma cells, and histiocytes often blurring the architecture of the node
• enlarged 13-fold at 18 to 20 weeks of age compared to reciprocal hybrid males and 6 fold compared to BXSB males
• spleen cell responses to phytohemagglutinin and concanavalin A are reduced and response to E. coli lipopolysaccharide is increased
• however, lymph node cell response to concanavalin A is similar to reciprocal hybrid males
• at 4 weeks of age, in vitro proliferation of spleen cells is increased 3-fold compared to cells from reciprocal hybrid males
• accelerated autoimmune syndrome relative to reciprocal hybrid males
• high titers of thymotoxic autoantibodies were found between 16 and 20 weeks of age in 15 of 16 males
• erythrocyte autoantibodies were found in 16 of 17 males between 16 and 20 weeks of age
• high titers of antinuclear antibody were found between 16 and 20 weeks of age in 14 of 16 males

homeostasis/metabolism
• at 23 weeks of age protoporphyrin levels are 543 +/- 368 mg/100 ml packed erythrocytes compared to 39 +/- 1 mg in reciprocal hybrid males

hematopoietic system
• 20-fold increase in spleen weight by 20 weeks of age

growth/size/body
• 20-fold increase in spleen weight by 20 weeks of age


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
04/16/2024
MGI 6.23
The Jackson Laboratory