mortality/aging
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• median survival in mice subjected to intramuscular treatment with 100 ug tamoxifen at 6 to 8 weeks is 205 days
• median survival in mice subjected to intramuscular treatment with 100 ug tamoxifen at 6 to 8 weeks and 1 umol CTX is 171 days compared with 338 days for control mice
• median survival in mice subjected to intramuscular treatment 50 ug tamoxifen at 2 weeks is 160 days compared with 228 days for control mice
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immune system
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• 19 days after the first injection of tamoxifen, the thymus has lost its regular morphology and the cortex is no longer distinguishable from the medulla
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• 15 days after the first injection of tamoxifen, thymus cellularity is decreased by 13-fold
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• 19 days after the first injection of tamoxifen, the DN1 population is overrepresented while the DN2 and DN3 populations are underrepresented
• however, the DN4 population is stable after tamoxifen treatment
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• 19 days after the first injection of tamoxifen, the relative number of immature double positive cells is increased compared to in Ptch1tm1Jwnd control mice
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• following treatment with tamoxifen, the number of neutrophilic granulocytes is increased compared to in Ptch1tm1Jwnd control mice
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• following treatment with tamoxifen, circulating B220high, IgD+ B cells are increased compared to in Ptch1tm1Jwnd control mice
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• at day15 through 19 after the first injection of tamoxifen, mature B cells are overrepresented in the spleen compared to in Ptch1tm1Jwnd control mice
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• 19 days after the first injection of tamoxifen, the relative number of mature single positive cells is increased compared to in Ptch1tm1Jwnd control mice
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• following treatment with tamoxifen, total lymphocyte fraction in the bone marrow is only slightly decreased compared to in Ptch1tm1Jwnd control mice
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• 19 days after the first injection of tamoxifen, the number of double positive cells is almost depleted compared to in Ptch1tm1Jwnd control mice
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• at day15 through 19 after the first injection of tamoxifen, the number of B220+ B cells in the spleen is reduced (4.71+/-2.33% compared to 13.98+/-3.74% in Ptch1tm1Jwnd control mice)
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• following treatment with tamoxifen, CD43+ B cells are almost completely absent and fraction I and II immature B cells are decreased in the bone marrow compared to in Ptch1tm1Jwnd control mice
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• at day15 through 19 after the first injection of tamoxifen, the number of T1 transitional B cells is reduced in the spleen compared to in Ptch1tm1Jwnd control mice
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• following treatment with tamoxifen, bone marrow B220low pre-B cells are lower than in Ptch1tm1Jwnd control mice
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neoplasm
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• mice subjected to intramuscular treatment with 100 ug tamoxifen at 6 to 8 weeks or intramuscular treatment 50 ug tamoxifen at 2 weeks exhibit rare follicular tumors on the trunk and paws
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• in 10 of 10 mice subjected to intramuscular treatment with 100 ug tamoxifen at 6 to 8 weeks unlike control mice
• in 10 of 10 mice subjected to intramuscular treatment with 100 ug tamoxifen and 1 umol CTX at 6 to 8 weeks unlike control mice
• in 10 of 10 mice subjected to intramuscular treatment 50 ug tamoxifen at 2 weeks unlike control mice
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integument
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• in 10 of 10 mice subjected to intramuscular treatment with 100 ug tamoxifen at 6 to 8 weeks unlike control mice
• in 10 of 10 mice subjected to intramuscular treatment with 100 ug tamoxifen and 1 umol CTX at 6 to 8 weeks unlike control mice
• in 10 of 10 mice subjected to intramuscular treatment 50 ug tamoxifen at 2 weeks unlike control mice
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hematopoietic system
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• however, granulocyte-macrophage lineage specification is normal following treatment with tamoxifen
• following treatment with tamoxifen, the Lin-c-kithighSca-1high population is increased while the population of Lin-c-kitlowSca-1low are underrepresented compared to in Ptch1tm1Jwnd control mice
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• 19 days after the first injection of tamoxifen, the thymus has lost its regular morphology and the cortex is no longer distinguishable from the medulla
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• 15 days after the first injection of tamoxifen, thymus cellularity is decreased by 13-fold
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• 19 days after the first injection of tamoxifen, the DN1 population is overrepresented while the DN2 and DN3 populations are underrepresented
• however, the DN4 population is stable after tamoxifen treatment
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• 19 days after the first injection of tamoxifen, the relative number of immature double positive cells is increased compared to in Ptch1tm1Jwnd control mice
|
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• following treatment with tamoxifen, the number of neutrophilic granulocytes is increased compared to in Ptch1tm1Jwnd control mice
|
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• following treatment with tamoxifen, circulating B220high, IgD+ B cells are increased compared to in Ptch1tm1Jwnd control mice
|
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• at day15 through 19 after the first injection of tamoxifen, mature B cells are overrepresented in the spleen compared to in Ptch1tm1Jwnd control mice
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• 19 days after the first injection of tamoxifen, the relative number of mature single positive cells is increased compared to in Ptch1tm1Jwnd control mice
|
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• following treatment with tamoxifen, total lymphocyte fraction in the bone marrow is only slightly decreased compared to in Ptch1tm1Jwnd control mice
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• 19 days after the first injection of tamoxifen, the number of double positive cells is almost depleted compared to in Ptch1tm1Jwnd control mice
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• at day15 through 19 after the first injection of tamoxifen, the number of B220+ B cells in the spleen is reduced (4.71+/-2.33% compared to 13.98+/-3.74% in Ptch1tm1Jwnd control mice)
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• following treatment with tamoxifen, CD43+ B cells are almost completely absent and fraction I and II immature B cells are decreased in the bone marrow compared to in Ptch1tm1Jwnd control mice
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• at day15 through 19 after the first injection of tamoxifen, the number of T1 transitional B cells is reduced in the spleen compared to in Ptch1tm1Jwnd control mice
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• following treatment with tamoxifen, bone marrow B220low pre-B cells are lower than in Ptch1tm1Jwnd control mice
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endocrine/exocrine glands
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• 19 days after the first injection of tamoxifen, the thymus has lost its regular morphology and the cortex is no longer distinguishable from the medulla
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• 15 days after the first injection of tamoxifen, thymus cellularity is decreased by 13-fold
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