糖尿病患者视网膜病变与降钙素基因相关肽及内皮素的关系

目的 观察糖尿病患者视网膜病变与降钙素基因相关肽（ＣＧＲＰ）及内皮素（ＥＴ）的关系。方法 应用眼底血管荧光造影法、放射免疫计数法、微柱层析法等观察６０例糖尿中层得（ＤＭ组、ＤＭⅠ～Ⅲ组）及３０例正常对照者的降钙素基因相关肽（ＣＧＲＰ）、内皮素（ＥＴ）、糖化血红蛋白（ＧＨｂＡ１Ｃ）、胰岛素（Ｉｎｓ）、Ｃ肽（ＣＰ）、空腹血糖（ＦＢＧ）、２４ｈ尿白蛋白基因相关肽（ＣＧＲＰ）、内皮素（ＥＦ）、糖化血红蛋白

Relationship between diabetic retinopathy and calcitonin gene related peptide and endothelin in diabetes mellitus

Objective To study the relationship between diabetic retinopathy (DR) and calcitonin gene related peptide (CGRP)or endothelin (ET) in diabetes rnellitus. Methods The concentration of calcitonin gene related peptide and endothelin was determinedin 30 normal subjects(group C) and 60 diabetic patients(DM group) by radioimmunoassay . The DM group was sub- divided into threegroups: 20 cases of non diabetic retinopathy group (DM group Ⅰ ); 22 cases of background diabetic retinopathy group (DM group Ⅱ ); 18cases of proliferative diabetic retinopathy group (DM group Ⅲ ). Results The concentration of calcitonin gene related peptide in diabetesmellitus group was lower than that in group C( P < 0.05), the CGRP in DM group Ⅲ was markedly lower than that in group C ( P <0.01) .The development of diabetic retinopathy was associated with lower CGRP level. ET in diabetes mellitus was higher than that ingroup C, but was not significantly increased in DM group and DM group Ⅰ ( P > 0.05). The ET in DM group Ⅲ was markedly higherthan that in group C( P < 0.01). There was a positive correlation between serum EＴ and Ins in diabetes mellitus. There was a negativecorrelation between CGRP and ET in diabetes mellitus. Conclusion Depressed CGRP may be related diabetic retinopathy. Marked de-crease in CGRP and increase in ET may be associated with diabetic retinopathy.