neoplasm
• 1 of 2 mice treated with doxycycline (dox) at 4-6 weeks of age show frank adenocarcinoma by 23 weeks on dox
• adult mice treated with dox 72 hours prior to injection with the cholecystokinin analog cerulein to induce acute pancreatitis show low- and high-grade PanIN lesions interspersed with areas of carcinoma in situ at 5 weeks after induction
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• mice treated with doxycycline (dox) at 4-6 weeks of age to induce Kras2 expression begin to show low-grade pancreatic intraepithelial neoplasia (PanIN) beginning at 3 weeks after dox treatment
• mice treated with dox at 4-6 weeks of age show PanIN, surrounded by areas of fibrosis and embedded in the acinar parenchyma after 18 weeks on dox and by 23 weeks, large areas of the pancreatic parenchyma are substituted with PanIN lesions of different grade, with frank adenocarcinoma seen in 1 of 2 mice
• mice kept on dox for 23 weeks show reversion of PanINs when dox is removed for 2 weeks
• adult mice treated with dox 72 hours prior to injection with the cholecystokinin analog cerulein, to induce acute pancreatitis, develop low- and high-grade PanIN lesions at 5 weeks after induction
• mice treated with dox 72 hours prior to induction of pancreatitis also show reversion of PanINs when dox is removed for 2 weeks
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homeostasis/metabolism
• adult mice treated with dox 72 hours prior to injection with the cholecystokinin analog cerulein to induce acute pancreatitis show impaired recovery from pancreatitis, showing acinar-ductal metaplasia with progressive accumulation of fibrotic stroma at 1 week after induction, replacement of the whole pancreatic parenchyma with ductal structures and signs of PanINs at 3 weeks after induction, and low- and high-grade PanIN lesions interspersed with areas of carcinoma in situ at 5 weeks after induction compared to adult mice without dox which show completely resolved damage
• mice kept on dox for 5 weeks prior to induction of pancreatitis and then dox removal for 2 weeks show incomplete repair process resulting in a small, fibrotic pancreas with fewer acini; after 5 weeks of dox removal, no PanINs are observed however, the pancreas appears fibrotic and is small
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endocrine/exocrine glands
• mice kept on dox for 5 weeks following pancreatitis induction show an increase in apoptotic cells and small pancreas size upon removal of dox
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• 1 of 2 mice treated with doxycycline (dox) at 4-6 weeks of age show frank adenocarcinoma by 23 weeks on dox
• adult mice treated with dox 72 hours prior to injection with the cholecystokinin analog cerulein to induce acute pancreatitis show low- and high-grade PanIN lesions interspersed with areas of carcinoma in situ at 5 weeks after induction
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• mice treated with doxycycline (dox) at 4-6 weeks of age to induce Kras2 expression begin to show low-grade pancreatic intraepithelial neoplasia (PanIN) beginning at 3 weeks after dox treatment
• mice treated with dox at 4-6 weeks of age show PanIN, surrounded by areas of fibrosis and embedded in the acinar parenchyma after 18 weeks on dox and by 23 weeks, large areas of the pancreatic parenchyma are substituted with PanIN lesions of different grade, with frank adenocarcinoma seen in 1 of 2 mice
• mice kept on dox for 23 weeks show reversion of PanINs when dox is removed for 2 weeks
• adult mice treated with dox 72 hours prior to injection with the cholecystokinin analog cerulein, to induce acute pancreatitis, develop low- and high-grade PanIN lesions at 5 weeks after induction
• mice treated with dox 72 hours prior to induction of pancreatitis also show reversion of PanINs when dox is removed for 2 weeks
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• mice treated with dox at 4-6 weeks of age begin to show acinar-ductal metaplasia beginning at 3 weeks after dox treatment
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