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DOI: 10.1016/S0021-9258(18)45280-5
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摘要: The effect of aging on the expression alpha 2u-globulin was studied in liver tissue from 6-30-month-old male Fischer F344 rats. synthesis by suspensions isolated hepatocytes decreased 90% between 6 and 22 months age. levels mRNA transcription genes nuclei 80-85% 5 24 Because has been suggested to be a "senescence marker protein," measured rats fed diet restricted calories. This dietary restriction procedure shown increase significantly longevity rodents. compared 18-month-old ad libitum (40% total calories). synthesis, levels, were 1.8-3-fold higher for libitum. Therefore, alters age-related change 2u-globulin. Our results demonstrate that changes arise during or are regulated at level transcription.