[Analyses on the relative factors regarding diabetic nephropathy among 1758 cases of type 2 diabetic patients].

OBJECTIVE: To analyze the prevalence rate of diabetic nephropathy (DN) and the related factors on DN among type 2 diabetic patients. METHODS: A total number of 1758 type 2 diabetic patients who were hospitalized in the Beijing Hospital from 2003 to 2010 were analyzed retrospectively. Three groups were divided according to the rate of urinary albumin excretion (UAER). Patients whose UAER < 20 µg/min belonged to normal albuminuria (NA) group. The ones whose UAER from 20 to 200 µg/min belonged to microalbuminuria (MA) group, and the others whose UAER ≥ 200 µg/min belonged to large albuminuia (LA) group. The clinical characteristics were then compared. The related factors of DN were analyzed. RESULTS: (1) There were 1246 patients in NA group, 408 patients in MA group, and 104 patients in LA group. The constituent ratio of nephropathy was 29.1%. (2) The ages of NA group, MA group and LA group were (59.87 ± 12.77, 62.52 ± 12.74, 64.44 ± 12.74) years old, respectively, with body mass index (BMI) as (24.90 ± 3.42, 25.53 ± 4.00, 25.53 ± 3.91) kg/m(2) respectively; duration of diabetes as (8.39 ± 7.12, 10.77 ± 8.02, 12.84 ± 7.97) years; systolic blood pressure (SBP) as (133.42 ± 18.19, 142.72 ± 20.21, 151.12 ± 21.91) mm Hg; diastolic blood pressure as (78.75 ± 10.66, 80.79 ± 12.21, 83.33 ± 13.61) mm Hg; fasting blood sugar (FBS) as (8.25 ± 3.43, 9.02 ± 3.72, 9.22 ± 4.62) mmol/L; glycated hemoglobin (HbA1c) as (8.88 ± 2.10, 9.34 ± 2.36, 9.10 ± 2.36)%; uric acid (UA) as (288.04 ± 90.41, 307.23 ± 96.96, 374.28 ± 105.47) mmol/L; triglyceride as (1.72 ± 1.51, 2.06 ± 1.88, 1.94 ± 1.42) mmol/L, high density lipoprotein cholesterol as (1.08 ± 0.30, 1.02 ± 0.29, 1.07 ± 0.28) mmol/L; fasting insulin as (9.24 ± 9.02, 11.24 ± 9.74, 11.06 ± 9.29) µU/ml; fasting C peptide as (462.31 ± 289.94, 510.02 ± 350.08, 595.93 ± 445.86) pmol/L. There were significant differences between NA, MA and LA groups in all above items (P < 0.01 or P < 0.05). (3) Logistic regression analysis showed that DN were related with duration of diabetes, BMI, SBP, HbA1c, FBS, UA (OR values were 1.041, 1.055, 1.028, 1.116, 1.100, 1.004 respectively, P < 0.05 or P < 0.01). CONCLUSION: It would be helpful to prevent and retard progression of DN that comprehensively controlling high blood glucose, hypertension, hyperuricemia and body weight of type 2 diabetic patients.