NEW YORK--(BUSINESS WIRE)--Synergy Pharmaceuticals Inc. (NASDAQ:SGYP) today presented new in vitro data at Digestive Disease Week (DDW) showing plecanatide, an investigational compound being evaluated for chronic idiopathic constipation (CIC) and irritable bowel syndrome with constipation (IBS-C), replicated the pH-dependent activity of the body’s naturally occurring gastrointestinal (GI) peptide – uroguanylin. Uroguanylin plays an important role in supporting regular bowel function through its activation of the intestinal guanylate cyclase C (GC-C) receptor.