alexa Interleukin-1 beta dissociates beta-amyloid precursor protein and beta-amyloid peptide secretion.
Nutrition

Nutrition

Journal of Nutrition & Food Sciences

Author(s): Vasilakos JP, Carroll RT, Emmerling MR, Doyle PD, Davis RE,

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Abstract A heightened production of interleukin 1 beta (IL-1 beta) has been reported in microglial-associated amyloid deposits in Alzheimer's disease (AD) brains. These plaques are composed predominantly of beta/A4 peptide derived from beta-amyloid precursor protein (beta APP). We demonstrate that short-term (1 h) IL-1 beta-treatment increases beta APPs secretion and concomitantly decreases cell-associated beta APP in human H4 neuroglioma cells. Long-term (5 h) IL-1 beta treatment did not alter secreted or cell-associated beta APP content. In contrast, the secretion of beta/A4-containing epitope was not affected by short-term IL-1 beta stimulation; however, long-term IL-1 beta treatment decreased the amount of beta/A4-containing epitope secreted from the cells. These results show that IL-1 beta modifies the processing and secretion of beta APP to exacerbate perhaps the neuropathology of AD.
This article was published in FEBS Lett and referenced in Journal of Nutrition & Food Sciences

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