同型半胱氨酸 (Ｈｃｙ)是在蛋氨酸向胱氨酸转变过程中形成的一种含硫氨基酸。研究表明 ,Ｈｃｙ是一种反应性血管损伤氨基酸 ,高Ｈｃｙ血症可能是心、脑及外周血管病变的独立危险因素[1] 。近年来发现高Ｈｃｙ血症可能是糖尿病大、小血管并发症发生、发展的一个重要危险因素。本 Homocysteine ​​(Hcy) is a sulfur-containing amino acid formed during the transition from methionine to cystine. Studies have shown that Hcy is a reactive vascular injury amino acid, hyperhomocysteinemia may be an independent risk factor for heart, brain and peripheral vascular disease [1]. In recent years, it has been found that hyperhomocysteinemia may be an important risk factor for the occurrence and development of diabetes mellitus and small vessel complications. this