By Dr Jodie Abramovitch
Many types of gases are produced within our digestive
systems. Alterations in the type and amount of these gases can alter gut
function, and potentially be a sign of disease.
In a cross-disciplinary collaborative project including Monash researchers from the
Department of Gastroenterology, a new intestinal gas capsule has been developed. These
capsules has been designed to be swallowed so as to allow access to the gut in
a non-invasive manner. Here they can sample the gases present and transmit
their concentration and location (based on time lapsed following ingestion of
the capsule) within the gut.
To test the capsules, pigs on high or low fibre diets were
given the capsules. Pigs on a high fibre diet had higher concentrations of carbon
dioxide (CO2) and lower hydrogen gas (H2) within their gastrointestinal tract than pigs given
a low fibre diet. These findings were consistent with previous studies which
measured gases in the guts of pigs on low and high fibre diets using classical
(more invasive) techniques. As such, this study has shown that intestinal gas capsules can effectively provide information on the "where and what" regarding gas production in the gut, information that can only be determined presently by invasive techniques that are not possible to perform on humans.
Though the capsules require further refinement before they
can be considered for use in humans, this study has shown that they have great
potential to effectively and non-invasively detect gases within the gut. This
will allow for a better understanding of the physiology of the gut and permit easier detection and assessment of gut disorders within the
clinic and inform treatment options.
Reference:
Kalantar-Zadeh K, Yao CK, Berean KJ, Ha N, Ou JZ, Ward SA, Pillai N, Hill J, Cottrell JJ, Dunshea FR, McSweeney C, Muir JG, Gibson PR. Intestinal gas capsules: a proof-of-concept demonstration. Gastroenterology. 2016 Jan: 150;37-9
doi: 10.1053/j.gastro.2015.07.072