What is the Diagnostic Accuracy of Novel Urine Biomarkers for Urinary Tract Infection?

Background: Urinary tract infection (UTI) affects half of women at least once in their lifetime. Current diagnosis involves urinary dipstick and urine culture, yet both methods have modest diagnostic accuracy, and cannot support decision-making in patient populations with high prevalence of asymptom...

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Main Authors: George Edwards, Anna Seeley, Adam Carter, Maia Patrick Smith, Elizabeth LA Cross, Kathryn Hughes, Ann Van den Bruel, Martin J Llewelyn, Jan Y Verbakel, Gail Hayward
Format: Article
Language:English
Published: SAGE Publishing 2023-01-01
Series:Biomarker Insights
Online Access:https://doi.org/10.1177/11772719221144459
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author George Edwards
Anna Seeley
Adam Carter
Maia Patrick Smith
Elizabeth LA Cross
Kathryn Hughes
Ann Van den Bruel
Martin J Llewelyn
Jan Y Verbakel
Gail Hayward
author_facet George Edwards
Anna Seeley
Adam Carter
Maia Patrick Smith
Elizabeth LA Cross
Kathryn Hughes
Ann Van den Bruel
Martin J Llewelyn
Jan Y Verbakel
Gail Hayward
author_sort George Edwards
collection DOAJ
description Background: Urinary tract infection (UTI) affects half of women at least once in their lifetime. Current diagnosis involves urinary dipstick and urine culture, yet both methods have modest diagnostic accuracy, and cannot support decision-making in patient populations with high prevalence of asymptomatic bacteriuria, such as older adults. Detecting biomarkers of host response in the urine of hosts has the potential to improve diagnosis. Objectives: To synthesise the evidence of the diagnostic accuracy of novel biomarkers for UTI, and of their ability to differentiate UTI from asymptomatic bacteriuria. Design: A systematic review. Data Sources and Methods: We searched MEDLINE, EMBASE, CINAHL and Web of Science for studies of novel biomarkers for the diagnosis of UTI. We excluded studies assessing biomarkers included in urine dipsticks as these have been well described previously. We included studies of adult patients (≥16 years) with a suspected or confirmed urinary tract infection using microscopy and culture as the reference standard. We excluded studies using clinical signs and symptoms, or urine dipstick only as a reference standard. Quality appraisal was performed using QUADAS-2. We summarised our data using point estimates and data accuracy statistics. Results: We included 37 studies on 4009 adults measuring 66 biomarkers. Study quality was limited by case-control design and study size; only 4 included studies had a prospective cohort design. IL-6 and IL-8 were the most studied biomarkers. We found plausible evidence to suggest that IL-8, IL-6, GRO-a, sTNF-1, sTNF-2 and MCR may benefit from more rigorous evaluation of their potential diagnostic value for UTI. Conclusions: There is insufficient evidence to recommend the use of any novel biomarker for UTI diagnosis at present. Further evaluation of the more promising candidates, is needed before they can be recommended for clinical use.
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spelling doaj.art-515e0813e16440f6895fc005e1b7d0e62023-01-31T16:03:20ZengSAGE PublishingBiomarker Insights1177-27192023-01-011810.1177/11772719221144459What is the Diagnostic Accuracy of Novel Urine Biomarkers for Urinary Tract Infection?George Edwards0Anna Seeley1Adam Carter2Maia Patrick Smith3Elizabeth LA Cross4Kathryn Hughes5Ann Van den Bruel6Martin J Llewelyn7Jan Y Verbakel8Gail Hayward9NIHR Community Healthcare Medtech and IVD Cooperative, Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UKNuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UKNuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UKNuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UKDepartment of Global Health and Infection, Brighton and Sussex Medical School, Falmer, UKPRIME Centre Wales, Division of Population Medicine, Cardiff University, Cardiff, UKEPI-Centre, Academic Centre for General Practice, KU Leuven, Leuven, BelgiumDepartment of Global Health and Infection, Brighton and Sussex Medical School, Falmer, UKEPI-Centre, Academic Centre for General Practice, KU Leuven, Leuven, BelgiumNIHR Community Healthcare Medtech and IVD Cooperative, Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UKBackground: Urinary tract infection (UTI) affects half of women at least once in their lifetime. Current diagnosis involves urinary dipstick and urine culture, yet both methods have modest diagnostic accuracy, and cannot support decision-making in patient populations with high prevalence of asymptomatic bacteriuria, such as older adults. Detecting biomarkers of host response in the urine of hosts has the potential to improve diagnosis. Objectives: To synthesise the evidence of the diagnostic accuracy of novel biomarkers for UTI, and of their ability to differentiate UTI from asymptomatic bacteriuria. Design: A systematic review. Data Sources and Methods: We searched MEDLINE, EMBASE, CINAHL and Web of Science for studies of novel biomarkers for the diagnosis of UTI. We excluded studies assessing biomarkers included in urine dipsticks as these have been well described previously. We included studies of adult patients (≥16 years) with a suspected or confirmed urinary tract infection using microscopy and culture as the reference standard. We excluded studies using clinical signs and symptoms, or urine dipstick only as a reference standard. Quality appraisal was performed using QUADAS-2. We summarised our data using point estimates and data accuracy statistics. Results: We included 37 studies on 4009 adults measuring 66 biomarkers. Study quality was limited by case-control design and study size; only 4 included studies had a prospective cohort design. IL-6 and IL-8 were the most studied biomarkers. We found plausible evidence to suggest that IL-8, IL-6, GRO-a, sTNF-1, sTNF-2 and MCR may benefit from more rigorous evaluation of their potential diagnostic value for UTI. Conclusions: There is insufficient evidence to recommend the use of any novel biomarker for UTI diagnosis at present. Further evaluation of the more promising candidates, is needed before they can be recommended for clinical use.https://doi.org/10.1177/11772719221144459
spellingShingle George Edwards
Anna Seeley
Adam Carter
Maia Patrick Smith
Elizabeth LA Cross
Kathryn Hughes
Ann Van den Bruel
Martin J Llewelyn
Jan Y Verbakel
Gail Hayward
What is the Diagnostic Accuracy of Novel Urine Biomarkers for Urinary Tract Infection?
Biomarker Insights
title What is the Diagnostic Accuracy of Novel Urine Biomarkers for Urinary Tract Infection?
title_full What is the Diagnostic Accuracy of Novel Urine Biomarkers for Urinary Tract Infection?
title_fullStr What is the Diagnostic Accuracy of Novel Urine Biomarkers for Urinary Tract Infection?
title_full_unstemmed What is the Diagnostic Accuracy of Novel Urine Biomarkers for Urinary Tract Infection?
title_short What is the Diagnostic Accuracy of Novel Urine Biomarkers for Urinary Tract Infection?
title_sort what is the diagnostic accuracy of novel urine biomarkers for urinary tract infection
url https://doi.org/10.1177/11772719221144459
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