Recent evidence suggests that neutrophil/lymphocyte (N/L) ratio play a role in the development and progression of cardiovascular complications. Increased urinary albumin and protein excretion has been shown to be a risk factor for cardiovascular disease. Thus, this study aimed to investigate the relationship between circulating total and differential leukocyte counts including N/L ratio with urinary protein and albumin excretion in patients with newly diagnosed type 2 diabetes.
All patients underwent history taking, physical examination, blood pressure measurement, 12-lead electrocardiographic evaluation, routine urine analysis, biochemical analysis, 24-hour urine collection to measure protein and albumin excretion and creatinine clearance. Peripheral total and differential leukocyte analyses were performed using an automated cell counter.
In total, 80 patients were included. Spearman correlation analysis revealed that 24-hour urinary protein excretion was correlated with neutrophil count (ρ = 0.280, P = 0.012), lymphocyte count (ρ = −0.365, P = 0.001) and N/L ratio (ρ = 0.474, P < 0.0001). Spearman correlation analysis revealed that 24-hour urinary albumin excretion was correlated with neutrophil count (ρ = 0.261, P = 0.019), lymphocyte count (ρ = −0.278, P = 0.013) and N/L ratio (ρ = 0.415, P < 0.0001). In stepwise linear regression analysis, 24-hour urinary protein excretion was independently associated with high-density lipoprotein cholesterol (P = 0.01), blood urea (P = 0.014) and N/L ratio (P = 0.041). On the other hand, 24-hour urinary albumin excretion was independently associated with creatinine clearance (P = 0.004), albumin (P < 0.0001) and N/L ratio (P = 0.011).
This study demonstrated that increased N/L ratio was independently related with both 24-hour urinary protein and urinary albumin excretion in newly diagnosed patients with type 2 diabetes.