Johnson JC, Schmidt CR, Shrubsole MJ, Billheimer DD, Joshi PR, Morrow JD, Heslin MJ, Washington MK, Ness RM, Zheng W, Schwartz DA, Coffey RJ, Beauchamp RD, Merchant NB. Urine PGE-M: A metabolite of prostaglandin E2 as a potential biomarker of advanced colorectal neoplasia. Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association. 2006 Nov;4(4). 1358-65. PMID: 16996805 [PubMed]
The enzyme cyclooxygenase-2 is expressed in a majority of colorectal carcinomas (CRCs) and is important in prostaglandin production. We have developed an accurate method to measure the urinary metabolite of prostaglandin E(2) (PGE-M) using recently developed mass spectrometric techniques. The purpose of this pre-validation study was to determine if urinary PGE-M levels can be used as a biomarker to discriminate between healthy patients and those with colorectal disease.