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  • Title: The ratio between kidney volume and function increases with the progression of nephropathy in Type 2 diabetes.
    Author: Giordano M, Ciarambino T, Gesuè L, Castellino P, De Simone M, Rinaldi G, D'Amora M, Zito G, Paolisso G, Coppola L.
    Journal: Clin Nephrol; 2009 Oct; 72(4):247-51. PubMed ID: 19825329.
    Abstract:
    OBJECTIVE: In Type 2 diabetes, it is not clear if renal size is constantly related to the glomerular filtration rate. In addition, it is not known if kidney volume (KV) is associated with an increased urinary albumin and IgG excretion. METHODS: The relationship between kidney volume, creatinine clearance (CrCl), urinary albumin and IgG excretion in 95 Type 2 diabetic patients with different stages of nephropathy (1 - 4 Stage sec NKDF-QD) was elevated and compared to 85 non-diabetic subjects with similar degree of kidney function. RESULTS: In Type 2 diabetic patients the KV/CrCl ratio was increased, in comparison with the control subjects, from about 15% in Stage 1 to 53% in Stage 4. In T2D subjects, significant correlations were found between KV and urinary albumin excretion (r = 0.665, p < 0.05), and between KV and urinary IgG excretion (r = 0.800, p < 0.001). CONCLUSION: The present study finds that Type 2 diabetic subjects, are characterized by an increased ratio between KV/CrCl, throughout the different progressive stages of nephropathy. In Type 2 diabetes relationships between KV and urinary albumin and between KV and IgG excretion also were found to be significant, suggesting a role for the impaired size selectivity of proteinuria as a possible determinant of KV.
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