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  • Title: Management of urinary tract infection with intravesical amikacin may increase the risk of bladder oxidative stress in children with neurogenic bladder.
    Author: Amasyali AS, Yilmaz D, Yilmaz M, Kucukdurmaz F, Sonmez F, Erol H.
    Journal: Int Urol Nephrol; 2017 Dec; 49(12):2105-2109. PubMed ID: 28956280.
    Abstract:
    INTRODUCTION: We evaluated the bladder oxidative stress in neurogenic bladder children treated with intravesical amikacin for recurrent UTI and whether urinary isoprostane f2 alpha (F2-IsoP) is a good biomarker in this particular condition. METHODS: This prospectively designed controlled study was approved by the Adnan Menderes University institutional ethics committee (Adnan Menderes University, 2015/649). Between January 2016 and January 2017, twenty-six children with meningomyelocele who had been doing CIC were recruited. Serum and urine samples were collected during urinary tract infection (UTI) (group 1) and after management of UTI with intravesical amikacin (group 2) besides standard oral antibiotic treatment. While oxidative stress parameters SOD, GSH, GPX, MDA, F2-IsoP and NO were analyzed in the serum samples, only F2-IsoP was analyzed in the urine. All data were compared with 23 normal healthy control children (group 3). RESULTS: Median age, CIC duration and number of CIC per day of patients' group were 84 (60-147) months, 60 (30-90) months and 4 (4-6), respectively. Male-to-female ratio was 1:16. There was no statistical difference between groups in terms of serum oxidative stress parameters (p > 0.05). However, statistically significant urine F2-IsoP changes exist between groups (p = 0.011) (Fig. 1). But there were no correlations between urine F2-IsoP and disease clinical data such as CIC duration or number of CIC per day. Serum glutathione levels in group 2 were higher than group 1 and 3, as well (p = 0.023, Kruskal-Wallis test). Fig. 1 Comparison of median urinary isoprostane f2 alpha levels CONCLUSION: Higher urine F2-IsoP levels after management of UTI with intravesical amikacin may reflect increased lipid peroxidation and oxidative stress in children with NB. This detrimental effect on bladder should be considered in the long-term treatment period.
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