Hay-Lombardie Anne, Kamel Saïd, Bigot-Corbel Edith
Laboratoire de biochimie, Centre hospitalier universitaire de Nantes, Hôpital Guillaume et René Laënnec, Nantes, France.
Laboratoire de biochimie, Centre hospitalier universitaire d'Amiens, Amiens, France.
Ann Biol Clin (Paris). 2019 Aug 1;77(4):407-414. doi: 10.1684/abc.2019.1466.
Like all proteins, plasma albumin can undergo glycation to produce glycated albumin. This glycation will change the structure and therefore functionalities of albumin. Because of its accessibility, its high concentration and its half-life the glycation of albumin is greater than that of haemoglobin. Laboratory measurement of glycated albumin is possible. The value of glycated albumin reflects the glycaemic balance over a period of 3 weeks, and shows its interest in cases where the determination of HbA is impossible or deficient. It also seems that the glycated albumin has a prognostic interest in the chronic kidney disease patients dialyzed or not. In some patients, the assay of glycated albumin could replace measurement of fructosamines and provide additional information to HbA values.
与所有蛋白质一样,血浆白蛋白会发生糖基化反应生成糖化白蛋白。这种糖基化会改变白蛋白的结构,进而影响其功能。由于白蛋白易于获取、浓度高且半衰期长,其糖基化程度高于血红蛋白。糖化白蛋白可以通过实验室检测得出。糖化白蛋白的值反映了3周内的血糖平衡情况,在无法测定糖化血红蛋白(HbA)或测定结果不准确的情况下具有重要意义。此外,糖化白蛋白似乎对接受或未接受透析的慢性肾病患者具有预后价值。在某些患者中,糖化白蛋白检测可替代果糖胺检测,并为糖化血红蛋白值提供更多信息。