"gut organisms" is a correct and usable phrase in written English.
You can use it when referring to the organisms that live in the digestive tract, such as bacteria, viruses, and fungi. For example, "Studies have found that certain gut organisms can lead to adverse health effects."
We studied the effects of various IAP targets on the growth of stool aerobic and anaerobic bacteria as well as on a few specific gut organisms.
An additional approach would be to co-administer a urea drink (similar to the Breathtek approach for H. pylori) that is not enriched in 13C, but rather has this at normal abundance: therefore any CO2 produced by gut organisms would not be enriched in 13CO2 and thus not confound the signal from the lungs.
Only very recently has the concept of gut organisms affecting the heart been considered.
For instance, gut organisms introduced into the oro-pharyngeal and nasal cavities by gastro-oesophageal reflux may then be inhaled, causing ventilator-associated pneumonia (VAP).
Thus, recent research emphasizes the importance of gut organisms in the development of different diseases [ 19– 21], and this issue may be approached through live bacteria therapy.
This concern is based on studies of animal models that describe the translocation of gut organisms across intestinal mucosa with enhanced permeability.
To survive in the gut, the organisms must be tolerant to low pH and bile toxicity prevalent in the upper digestive tract.
The abnormal inflammatory response observed in IBD requires interplay between host genetic factors and the intestinal microbiota. 1 2 Several lines of evidence support the notion that IBD results from an excessive immune response to gut commensal organisms.
Changes in the gastrointestinal tract may predispose to the migration of gut micro-organisms such as enterococci, increasing the link to VSE bacteraemia [ 48].
An increasing body of evidence supports the hypothesis of gut-derived organisms as a major source of sepsis, especially when no other apparent infectious focus can be identified [ 11, 24- 26].
In the most severely ill patients (often in the ICU) and in neutropenic patients, some of the gut micro-organisms (chiefly those present in large amounts) can induce healthcare-associated infections such as pneumonia or translocate through the gut barrier, inducing bacteraemia and/or candidaemia.
