Introduction: urinary tract infection (UTI) that can affect any part of the urinary tract and may subsequently lead to kidney infection is linked with variety of causative factors such as oxidative stress. In this study, we aimed to systematically review the literatures to evaluate the effects of oxidative stress on UTI.Method: PubMed and Google scholar were searched systematically using the key terms, "oxidative stress" and "urinary tract infection" in the title, keywords, and abstract on February 2015 to find articles in which the oxidative stresses had been evaluated in children with urinary tract infection (UTI). Papers were excluded if they were unrelated to the purpose of this study, or in language other than English. Full texts of the relevant documents were fully reviewed for data extraction.Result: Of overall 50 articles from PubMed, and 6 records found in Google scholar, only 8 articles met the inclusion criteria for further assessment. Additionally, three papers were omitted due to full texts unavailability or language irrelevancy, and five articles, which fully met the inclusion criteria, were used for data extraction. The results showed that the level of antioxidant decreases significantly in patients with UTI, while the markers of oxidative stress increases.Conclusions: The results of the studies showed that the level of antioxidants decreases in patients with UTI, while lipid peroxidase and the level of oxidative stress biomarkers such as malondialdehyde and reactive oxygen species increase. These findings are suggestive of an association between oxidative stress and UTI.

Background: urinary tract infections are one of the most common nosocomial infections. They are progressively becoming a serious and very recurrent public health problem in Africa. With respect to the limited data available on this situation in Benin, the present study was conducted.Objectives: Its objective was to determine the prevalence of the urinary tract infections among catheterized patients at a hospital in Zinvie (Benin).Patients and Methods: This prospective cross-sectional study was conducted on 60 inpatients from the Services of Emergencies, Medicine and Surgery of the hospital. Urine was collected twice per patient: 10 minutes and 48 hours after the insertion of the catheter. All urine samples were subjected to bacteriological analyses. The sensitivity of bacteria isolates was tested with prescribed antibiotics in the hospital. Hygiene practices during catheterization were recorded by direct observation using a checklist.Results: Two days later, (48 hours after the catheterization), 14 patients out of 60 (23.33%) presented with a urinary infection, of which 1 patient (1.66%) was already infected before the process. Gram-negative bacteria were the most isolated bacteria (79%), with Escherichia coli as the most identified species (63%) followed by Pseudomonas spp. (11%) and Acinetobacter spp. (5%). Gram-positive cocci isolates were essentially Staphylococcus aureus (21%). All bacteria isolates were multidrug resistant.Conclusions: Only a few number of health workers do respect hygiene rules before and after catheterization. Therefore, it is necessary to train health workers involved in such activities on good hygiene practices during catheterization.