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Review
. 2021 Nov:178:113924.
doi: 10.1016/j.addr.2021.113924. Epub 2021 Aug 12.

In vitro models to evaluate ingestible devices: Present status and current trends

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Free article
Review

In vitro models to evaluate ingestible devices: Present status and current trends

Connor O'Farrell et al. Adv Drug Deliv Rev. 2021 Nov.
Free article

Abstract

Orally ingestible medical devices offer significant opportunity in the diagnosis and treatment of gastrointestinal conditions. Their development necessitates the use of models that simulate the gastrointestinal environment on both a macro and micro scale. An evolution in scientific technology has enabled a wide range of in vitro, ex vivo and in vivo models to be developed that replicate the gastrointestinal tract. This review describes the landscape of the existing range of in vitro tools that are available to characterize ingestible devices. Models are presented with details on their benefits and limitations with regards to the evaluation of ingestible devices and examples of their use in the evaluation of such devices is presented where available. The multitude of models available provides a suite of tools that can be used in the evaluation of ingestible devices that should be selected on the functionality of the device and the mechanism of its function.

Keywords: Colon; In vitro model; Macroenvironment microenvironment; Organ-on-a-chip; Organoid; Small intestine; Stomach.

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Conflict of interest statement

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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