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- W2767558997 abstract "Abstract Somatostatin‐14 is a native neuropeptide with widespread functions in the body. Self‐assembly of somatostatin‐14 into amyloid‐like nanofibrils has been previously demonstrated in aqueous media. We here hypothesize that the somatostatin nanofibrils can form a stable depot that release monomers in a controlled manner. This study aims to investigate if somatostatin monomers are released from physical hydrogels formed in water and in the presence of electrolytes. The release kinetics of the somatostatin monomers is investigated for the first time. This is correlated with the rheological properties of the hydrogels formed. We demonstrate that at the concentrations tested, there is release of somatostatin monomers from the hydrogels following a novel hybrid model of zero‐order and first‐order release. In the presence of electrolytes, somatostatin hydrogels demonstrated higher elastic moduli ( G ′) which correlates to the narrower and higher density of nanofibrils observed with TEM. The presence of electrolytes resulted in a slower release of the somatostatin monomers and in a lower cumulative percentage released over 48 hrs. It is questionable that the concentrations released will be therapeutically effective. However, self‐assembled somatostatin hydrogels have the potential to act as a depot for ocular drug delivery." @default.
- W2767558997 created "2017-11-17" @default.
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- W2767558997 date "2018-02-16" @default.
- W2767558997 modified "2023-10-13" @default.
- W2767558997 title "Release kinetics of somatostatin from self-assembled nanostructured hydrogels" @default.
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- W2767558997 doi "https://doi.org/10.1002/bip.23085" @default.
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