hyperhomocysteinemias 《英文msh词典》Hyperhomocysteinemias ; [入口词] Hyperhomocysteinemias ; [主题词] Hyperhomocysteinemia ; [英文释义] An inborn error of methionone metabolism which produces an excess of homocysteine in the blood. It is often caused by a deficiency of CYSTATHIONINE BETA-SYNTHASE and is a risk factor for coronary vascular disease.