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  • Intact or N-MID osteocalcin assays for assessment of bone formation in hemodialysis patients? = Intaktna ali N-MID-OC-osteokalcin metoda za oceno tvorbe kosti pri hemodializnih bolnikih?
    Užmah, Darja ...
    Background: Osteocalcin (OC) is a non-collagen bone matrix protein that is used as a noninvasive marker of bone formation. It is present in the circulation as an intact molecule and as fragments. The ... two known methods for OC determination in serum samples differ in the detection antibodies for an intact OC molecule and its N-terminal fragment. The aim of our study was to find out if these two methods give comparable results. Methods: 102 serum samples of hemodialysis patients were analyzed. While 26 patients were receiving calcitriol treatment, the remaining 76 patients were not. The average age of patients was 60 years. The causes of chronic renal failure were: diabetic nephropathy (27), chronic glomerulonephritis (31), polycystic kidney (26), and other (18). OC levels, beta-CrossLaps (CTx) and parathyroid hormone (PTH) were measured. Serum levels of OC were determined by intact-OC and N-MID-OC methods. Following the comparison of results, we assessed the relationships between OC, CTx, and PTH. SPSS 12.1 for Windows was used for statistical analysis. Results: Serum levels of N-MID-OC were 10.6- fold higherthan intact-OC. N-MID-OC and intact-OC levels did not differ between patients with and without calcitriol therapy. The results of both methods correlated well (r = 0.702, p < 0.001). Conclusions: The differences between osteocalcin serum levels assessed by intact-OC and NMID- OC methods were statistically significant. However, their correlation was good, so we can conclude that their clinical application is comparable.
    Vir: Zdravniški vestnik : glasilo Slovenskega zdravniškega društva = Slovenian medical journal = journal of Slovenian Medical Association. - ISSN 1318-0347 (Letn. 80, št. 1, jan. 2011, str. 11-17)
    Vrsta gradiva - članek, sestavni del
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 27862489

    Povezava(-e):

    http://szd.si/user_files/vsebina/Zdravniski_Vestnik/2011/januar/11-7.pdf
    Digitalna knjižnica Slovenije - dLib.si

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