Inflammatory Bowel Diseases Clinical Trial
Official title:
Non-invasive Transcutaneous Spectroscopy for the Assessment of Gut Permeability
This research aims to develop portable devices - known as fluorescence spectrometers - to monitor the leakage of fluorescent dyes out of the gut into the blood stream. These devices will measure the leakiness (permeability) of the gut in a non-invasive manner and will provide an early warning that patients are at risk of infections caused by the unwanted flow of bacteria from the intestine to the rest of the body.
"Leaky gut" - or, increased permeability of the intestine - involves the leakage of certain
intestinal constituents (e.g. endotoxins or even bacteria) from the gut into the rest of the
body. This condition is associated with many widespread diseases including coeliac disease,
inflammatory bowel disease, HIV, liver cirrhosis, sepsis and environmental enteric
dysfunction (EED). It has a considerable impact on quality of life and, in extreme cases
(e.g. sepsis), it can even lead to death. Furthermore, in the developing world (as part of
EED), it severely hampers the mental and physical development of young children. Thus, new
devices that can help us to learn more about leaky gut and more accurately monitor its
effects are urgently needed.
In this project, patients will drink a small dose of a fluorescent dye. Then, by shining
light on the patients' skin and recording the color and brightness of the light
(fluorescence) that comes back, it will be possible to measure the amount of dye that has
leaked into the blood (indicating the likelihood that bacteria are escaping from the gut and
causing infections). We refer to this as a "Spectroscopic gut permeability test." We will
also ask patients to take a traditional permeability test (known as a PEG permeability test)
so that we can validate our new sensor. Overall, this research will deliver vital information
that will improve our understanding of leaky gut and help guide the development of treatments
for the many diseases in which it occurs.
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