growth/size/body
N |
• mice show no significant change in body weight at 21 days after a 5-day tamoxifen treatment initiated at 12 weeks of age
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adipose tissue
• brown adipose tissue (BAT) accumulates unilocular lipid droplets, indicating whitening of brown fat
• Oil red O staining confirmed that pockets of white-adipocyte-like cells within BAT are adipocytes
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• marked reduction of white adipocytes at 21 days after tamoxifen treatment
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• irregularly sized white adipocytes in residual white fat tissue at 21 days after tamoxifen treatment
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• dramatic reduction in gonadal WAT tissue (gWAT) mass at 21 days after tamoxifen treatment
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• dramatic reduction in inguinal WAT tissue (iWAT) mass at 21 days after tamoxifen treatment
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• dramatic reduction in white adipose tissue mass at 21 days after tamoxifen treatment
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• loss of WAT due to increased apoptosis and macrophage infiltration
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• accumulation of apoptotic cells in iWAT after tamoxifen treatment, as determined by cleaved caspace-3 staining
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• increased white adipose tissue (WAT) inflammation with significant macrophage infiltration in gWAT and iWAT after tamoxifen treatment
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homeostasis/metabolism
• surprisingly, lipolytic activity is impaired in inguinal WAT tissue (iWAT) explants, as shown in a lipolysis assay
• mRNA expression of lipolysis genes is reduced in iWAT
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immune system
• increased white adipose tissue (WAT) inflammation with significant macrophage infiltration in gWAT and iWAT after tamoxifen treatment
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cellular
• accumulation of apoptotic cells in iWAT after tamoxifen treatment, as determined by cleaved caspace-3 staining
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