BETHESDA, Md. & ABBOTT PARK, Ill.--(BUSINESS WIRE)--Sucampo Pharmaceuticals, Inc. (NASDAQ: SCMP) and Abbott (NYSE:ABT) today announced positive top-line data from a 48-week phase 3 long-term safety and efficacy clinical trial of lubiprostone in Japanese patients with chronic idiopathic constipation (CIC). The trial demonstrated that lubiprostone was safe and well-tolerated.