Research on Urine Test for Diagnosing Irritable Bowel Syndrome
Overview of Irritable Bowel Syndrome
Irritable Bowel Syndrome (IBS) is a chronic digestive disorder marked by symptoms such as abdominal pain, bloating, gas, diarrhea, and constipation. The diagnosis of IBS can be challenging, often requiring invasive procedures like colonoscopy and the elimination of various other intestinal disorders.
Innovative Diagnostic Test Development
Researchers at McMaster University in Canada are focused on creating a new diagnostic method for IBS. Philip Britz-McKibbin, a professor in the Department of Chemistry & Chemical Biology at McMaster, noted, “Diagnostic testing for IBS involves a long process of excluding other related gut disorders, such as inflammatory bowel disease. We were interested in finding if there is a better way to detect and monitor IBS that avoids invasive colonoscopy procedures while also giving us better insights into its underlying mechanisms.”
Results of the Urine Test Study
The research team has successfully developed a straightforward urine test for IBS. Their findings, published in the journal Metabolomics, involved analyzing urine samples from 42 IBS patients and comparing them with samples from healthy individuals. The study revealed consistently elevated levels of specific substances in the urine of IBS patients, including hydroxylysine metabolites (O-glycosylgalactosyl-hydroxylysine, O-galactosyl-hydroxylysine, lysine), mannopyranosyl-tryptophan, imidazole propionate, glutamine, serine, ornithine, dimethylglycine, and dimethylguanosine. These compounds are byproducts of collagen degradation, believed to be linked to damage to the elastic lining of the colon in IBS patients.
Advantages of the Urine Test
This urine test represents a significant advancement in the non-invasive diagnosis of IBS, potentially eliminating the need for more invasive procedures such as colonoscopies, biopsies, and repeated blood tests. Furthermore, the researchers propose that this test could also serve as a practical tool for monitoring patients’ responses to IBS treatments.
Future Research Directions
The research team plans to expand their work by investigating the use of urine tests to detect other gastrointestinal disorders, including Crohn’s disease and ulcerative colitis.
References
Yamamoto, M., Pinto-Sanchez, M., Bercik, P., and Britz-McKibbin, P. (2019). Metabolomics reveals elevated urinary excretion of collagen degradation and epithelial cell turnover products in irritable bowel syndrome patients. EurekAlert!. (2019). Scientists find urine test could offer a non-invasive approach for diagnosis of IBS. [online] Available at: https://www.eurekalert.org/pub_releases/2019-07/mu-sfu070419.php [Accessed 9 Jul. 2019].