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Small Intestinal Permeability and Gut-Transit Time Determined with Low and High Molecular Weight Fluorescein Isothiocyanate-Dextrans in C3H Mice

Open access
Woting, Anni, Blaut, Michael·2018·Nutrients

Abstract

Protocols for intestinal permeability measurements in mice using 4-kDa fluorescein isothiocyanate-conjugated (FITC) dextran differ considerably among laboratories on the blood-sampling time. To find the optimal point in time for blood sampling, we administered 4-kDa FITC dextran to C3H mice and monitored the marker in plasma over 8 h. We also determined gut-transit time using 70-kDa FITC dextran, which does not cross the intestinal epithelium. The 4-kDa FITC dextran concentration in plasma reached its maximum 45 min after administration. The 70-kDa FITC dextran reached the jejunum after 15 min and passed the entire small intestine within 1 h after its administration, demonstrating that 4-kDa FITC dextran measured in plasma 1 h after its oral application is a marker of small intestinal permeability.

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Metadata

Authors
Woting, A., & Blaut, M.
Venue
Nutrients
Publisher
MDPI AG
Published
2018-05-28
Volume
10
Issue
6
Pages
685
ISSN
2072-6643 (ISSN-L)
OpenAlex
W2807423072
Cited by
176
References
2
FWCI
10.90
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Small Intestinal Permeability and Gut-Transit Time Determined with Low and High Molecular Weight Fluorescein Isothiocyanate-Dextrans in C3H Mice. https://app.cochat.ai/papers/10.3390/nu10060685
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Woting, A., & Blaut, M. (2018). Small Intestinal Permeability and Gut-Transit Time Determined with Low and High Molecular Weight Fluorescein Isothiocyanate-Dextrans in C3H Mice. Nutrients. https://doi.org/10.3390/nu10060685

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