Type 2 diabetic patients with the decline of urinary Tamm-Horsfall protein excretory rate showed the increment of fasting plasma homocysteine levels, suggesting that the damage of synthetic function of renal tubule may participate in the increment of homocysteine levels. 2型糖尿病患者中尿TammHorsfall蛋白排泄率降低者,空腹血浆同型半胱氨酸水平增高,提示肾小管合成功能障碍参与了糖尿病患者高同型半胱氨酸血症的发生。