mortality/aging
• mortality is increased after exposure to 6 consecutive daily doses of 2.34 Gy; however, mortality after exposure to a single dose of 11 Gy or 15 Gy is similar to wild-type
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• during a 23 month observation period more homozygotes (35.6%) showed signs of morbidity or visible abnormalities compared to wild-type littermates (20.8%)
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neoplasm
• 9 of 42 homozygotes developed lymphomas most of which were classified as follicular center B-cell lymphomas
• most of these lymphomas were composed of a pleomorphic population of small lymphocytes, centrocytes, centroblasts, and follicular center cells
• most neoplastic lymphocytes were found in the spleen with some also detected in the liver, kidney, lungs and mesentrial and mediastinal lymph nodes
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immune system
• some homozygotes develop splenomegaly with enlarged white pulp areas that can be associated with B-cell derived lymphoma
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cellular
• slight but consistent decrease in the proportion of cells in G2 after treatment with UV-B, doxorubicine, or taxol
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• slight but consistent increase in sensitivity to UV-B induced cell death; however MEF lifespan in culture in the absence of treatment is similar to wild-type
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behavior/neurological
• in 6 of 13 litters homozygous females showed a tendency to neglect or destroy their pups compared to 1 of 19 litters for wild-type females
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growth/size/body
• body weight is decreased by 10% and 20% in homozygous males and females, respectively, compared to sex matched wild-type mice
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• some homozygotes develop splenomegaly with enlarged white pulp areas that can be associated with B-cell derived lymphoma
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hematopoietic system
• some homozygotes develop splenomegaly with enlarged white pulp areas that can be associated with B-cell derived lymphoma
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homeostasis/metabolism
• mortality is increased after exposure to 6 consecutive daily doses of 2.34 Gy; however, mortality after exposure to a single dose of 11 Gy or 15 Gy is similar to wild-type
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