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Urological Research

, Volume 40, Issue 5, pp 455–460 | Cite as

Quantitative analysis of colonization with real-time PCR to identify the role of Oxalobacter formigenes in calcium oxalate urolithiasis

  • Ertan Batislam
  • Erdal YilmazEmail author
  • Ercan Yuvanc
  • Ozgul Kisa
  • Ucler Kisa
Original Paper

Abstract

The objective of the study was to quantitatively measure the number of Oxalobacter formigenes (O. formigenes) colonizations in the gastrointestinal tract in calcium oxalate-forming patients with real-time polymerase chain reaction (PCR). Calcium oxalate-forming patients (n: 27) were included in the study. Serum calcium, sodium, potassium, urea and creatinine levels, as well as 24 h urine levels of calcium and oxalate were measured. The numbers of O. formigenes colonies in stool samples were detected by real-time PCR. One or two metabolic abnormalities were detected in 15 of 27 patients. The O. formigenes levels in patients with metabolic disturbance were significantly decreased when compared to the patients with no metabolic abnormalities (p: 0.038). The undetectable levels of O. formigenes were encountered in one of five patients with hypercalciuria, in three of four patients with hyperoxaluria and in four of six patients with both hypercalciuria and hyperoxaluria. In nine patients with a history of stone recurrence, O. formigenes colonization was significantly lower than the patients with the first stone attack (p: 0.001). O. formigenes formation ceased or significantly diminished in patients with calcium oxalate stones with a coexistence of both hyperoxaluria and hypercalciuria. The measurement of O. formigenes colonies by real-time PCR seemed to be an inconvenient and expensive method. For this reason, the real-time PCR measurements can be spared for the patients with stone recurrences and with metabolic abnormalities like hypercalciuria and hyperoxaluria. The exact measurement of O. formigenes may also help more accurate programming of O. formigenes-based treatments.

Keywords

Calcium Oxalate Urolithiasis Oxalobacter formigenes Real-time PCR 

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Ertan Batislam
    • 1
  • Erdal Yilmaz
    • 1
  • Ercan Yuvanc
    • 1
  • Ozgul Kisa
    • 2
  • Ucler Kisa
    • 3
  1. 1.Faculty of Medicine, Department of UrologyUniversity of KirikkaleKirikkaleTurkey
  2. 2.Department of Medical MicrobiologyGulhane Military Medical Academy and School of MedicineAnkaraTurkey
  3. 3.Faculty of Medicine, Department of BiochemistryUniversity of KirikkaleKirikkaleTurkey

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