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- W2785869293 abstract "Currently, the physiological roles of amyloidogenic proteins (APs) in human brain, such as amyloid-β and α-synuclein, are elusive. Given that many APs arose by gene duplication and have been resistant against the pressures of natural selection, APs may be associated with some functions that are advantageous for survival of offspring. Nonetheless, evolvability is the sole physiological quality of APs that has been characterized in microorganisms such as yeast. Since yeast and human brain may share similar strategies in coping with diverse range of critical environmental stresses, the objective of this paper was to discuss the potential role of evolvability of APs in aging-associated neurodegenerative disorders, including Alzheimer's disease and Parkinson's disease. Given the heterogeneity of APs in terms of structure and cytotoxicity, it is argued that APs might be involved in preconditioning against diverse stresses in human brain. It is further speculated that these stress-related APs, most likely protofibrillar forms, might be transmitted to offspring via the germline, conferring preconditioning against forthcoming stresses. Thus, APs might represent a vehicle for the inheritance of the acquired characteristics against environmental stresses. Curiously, such a characteristic of APs is reminiscent of Charles Darwin's 'gemmules', imagined molecules of heritability described in his pangenesis theory. We propose that evolvability might be a physiological function of APs during the reproductive stage and neurodegenerative diseases could be a by-product effect manifested later in aging. Collectively, our evolvability hypothesis may play a complementary role in the pathophysiology of APs with the conventional amyloid cascade hypothesis." @default.
- W2785869293 created "2018-02-23" @default.
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- W2785869293 date "2018-02-06" @default.
- W2785869293 modified "2023-10-18" @default.
- W2785869293 title "Evolvability of Amyloidogenic Proteins in Human Brain" @default.
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- W2785869293 doi "https://doi.org/10.3233/jad-170894" @default.
- W2785869293 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5817905" @default.
- W2785869293 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29439348" @default.
- W2785869293 hasPublicationYear "2018" @default.
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