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  • Title: [Cardiovascular autonomic neuropathy and nephropathy in patients with type-1 diabetes mellitus].
    Author: Galicka-Latała D, Fedak D, Kuźniewski M, Kawalec E, Solnica B.
    Journal: Przegl Lek; 2004; 61(3):155-8. PubMed ID: 15518324.
    Abstract:
    UNLABELLED: In the last few years much attention is being given to the problem of diabetes mellitus, to it's development, prevalence and progression of chronic complications. The aim of the study was to 1. evaluate correction of metabolic disturbances in patients with long-term type 1 diabetes mellitus; 2. evaluate occurrence of diabetic nephropathy and excretion function in patients with long-term type 1 diabetes mellitus; 3. evaluate function of the cardiovascular autonomic nervous system in patients with long-term type 1 diabetes mellitus; 4. search for connections between the type and change dynamics in the cardiovascular system and degree of diabetic nephropathy advancement. The study was performed in a group consisting of 31 patients with type 1 diabetes mellitus (20 women, 11 males). Mean age of the study group equaled 37.6 +/- 10.75 years, duration of diabetes mellitus 21.3 +/- 9.55 years. Concentration of cystatin C in the study group was 0.98 +/- 0.23 ng/ml, in the group of patients with diabetic retinopathy 1.13 +/- 0.30 ng/ml, while in the group without diabetic retinopathy 0.89 +/- 0.13 ng/ml. Concentration of cystatin C (p <0.05) and calculated GFR according to equations proposed by F.J. Hoeck [GFR/1.73 m2 = -4.32 + 80.3/plasma cystatin] (p < 0.01) also G.D. Tan [GFR -10 = (87.1/plasma cystine) - 6.87] (p < 0.01) significantly differentiated the discussed groups. CONCLUSIONS: despite normal levels of blood creatinine in the studied patients, decreased glomerular filtration was calculated for plasma cystatin C. Plasma cystatin C concentrations and calculated glomerular clearance significantly differentiated the group with retinopathy from the group without diabetic retinopathy. Determining cystatin C concentrations as a protein which probably does not undergo glycation in plasma, may play a role in the detection of early diabetic nephropathy, when as well as plasma creatinine levels and albumin/creatinine index calculated from a sample of morning urine do not differentiate the studied group of patients.
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