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Biomarkers in Urine for Children With Monosymptomatic Nocturnal Enuresis and Nocturnal Polyuria

Primary Purpose

Nocturnal Enuresis

Status
Completed
Phase
Not Applicable
Locations
Denmark
Study Type
Interventional
Intervention
Urine collection through a collecting device (Uridome®) for maximum 1 week
Urine collection
Sponsored by
University of Aarhus
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional diagnostic trial for Nocturnal Enuresis

Eligibility Criteria

6 Years - 14 Years (Child)MaleDoes not accept healthy volunteers

Inclusion Criteria:

  • Monosymptomatic nocturnal enuresis with at least one dry night per week.
  • Nocturnal polyuria defined as nocturnal urine production on wet nights greater than 130 % of expected bladder capacity for age.
  • Normal bladder capacity defined as maximum voided volume excluding first morning voided volume bigger than expected bladder capacity for age.

Exclusion Criteria:

  • Recurrent urinary tract infections.
  • Anamnestic, clinical or laboratory findings that can be related to diseases or conditions that might affect the parameters investigated.
  • Neurological and/or known clinically significant anatomical abnormalities of the urinary tract.
  • Former operations in the urinary tract.
  • Ongoing medication that may interfere with the parameters tested.

If the child is receiving treatment for nocturnal enuresis (desmopressin, alarm or anticholinergics), the treatment has to be paused 1 week before urine collection.

Sites / Locations

  • Department of Paediatrics and Adolescent Medicine, Aarhus University Hospital

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Active Comparator

Arm Label

Urine collection, children with nocturnal enuresis

Urine collection, healthy children

Arm Description

The child ́s weight and height will be registered. The children's urine will be tested for infection with a dipstick urinalysis. The child will be asked to perform home recordings for seven days consisting of measurements of diaper weight and first morning voided volume and a two-day frequency-volume chart.

The child ́s weight and height will be registered. The children's urine will be tested for infection with a dipstick urinalysis.

Outcomes

Primary Outcome Measures

Proteins.
By using mass spectrometry (proteomics). For all children, any proteins related to nocturnal polyuria will be detected.
Metabolites.
By targeted mass spectrometry.

Secondary Outcome Measures

Total urine volume in each sample.
A urine volume for the "dry night" (first morning voided volume) and "wet night" (nighttime urine production + first morning voided volume) will be calculated.
Concentration of creatinine in the urine samples.
A level for the "dry night" and "wet night" will be calculated.
Osmolality in the urine samples.
By freezing-point depression. A level for the "dry night" and "wet night" will be calculated.

Full Information

First Posted
August 1, 2019
Last Updated
July 5, 2023
Sponsor
University of Aarhus
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1. Study Identification

Unique Protocol Identification Number
NCT04049019
Brief Title
Biomarkers in Urine for Children With Monosymptomatic Nocturnal Enuresis and Nocturnal Polyuria
Official Title
Biomarkers in Urine for Children With Monosymptomatic Nocturnal Enuresis and Nocturnal Polyuria
Study Type
Interventional

2. Study Status

Record Verification Date
July 2023
Overall Recruitment Status
Completed
Study Start Date
August 1, 2019 (Actual)
Primary Completion Date
September 1, 2022 (Actual)
Study Completion Date
September 1, 2022 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
University of Aarhus

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
The aim of the study is to identify protein markers in relation to the enuresis related nocturnal polyuria by using mass spectrometry on nocturnal urine samples. A biomarker for nocturnal polyuria would simplify an important part of the clinical characterization of enuresis patients.
Detailed Description
Involuntary voiding during sleep, nocturnal enuresis (NE), affects 7-10 % of all 7-year-olds, and 0.5-2 % of young adults. Night-time polyuria is one of the main pathogenic mechanisms. Today, the only method to diagnose nocturnal polyuria is home recordings involving diaper weight and registrations of first morning voids, which is very time-consuming. By using mass spectrometry (proteomics and metabolomics) on nocturnal urine samples from children with NE, the investigators aim to identify protein markers in relation to nocturnal polyuria. The perspective is to simplify an important part of the clinical characterization of NE patients. This hypothesis-generating pilot project will be performed on 10 boys with NE. The children will have to collect: Urine at bedtime on a wet and a dry night. Urine during a wet night through a collecting device (non-invasive). First morning voided volume following both a wet and a dry night. Furthermore, we will include 10 children without NE, who will collect urine during a dry night (first morning voided volume). Endpoints are any biomarkers in urine found to be associated with nocturnal polyuria. The proteomics and metabolomics methodologies are available at the proteomics core facility of Research Unit for Molecular Medicine, Dept. of Clinical Medicine, Aarhus University Hospital. Based on the analytical uncertainty of the protein analysis methods, 10 samples are sufficient for detecting down to two-fold alterations in protein levels (p<0.05). By using state of the art mass spectrometry, the difference in any protein level between 1) the total urine amount on a wet and a dry night, and 2) first morning voided volume on a wet and a dry night, will be evaluated. Furthermore, difference in urine composition between children with NE and healthy children will be evaluated. Student's t-test with significance level at p<0.05 will be used.The amount of proteins in each urine sample will be correlated to the total amount of proteins in the respective sample.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Nocturnal Enuresis

7. Study Design

Primary Purpose
Diagnostic
Study Phase
Not Applicable
Interventional Study Model
Single Group Assignment
Model Description
10 boys with nocturnal enuresis and 10 healthy boys will be included for urine collection.
Masking
None (Open Label)
Allocation
Non-Randomized
Enrollment
20 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Urine collection, children with nocturnal enuresis
Arm Type
Experimental
Arm Description
The child ́s weight and height will be registered. The children's urine will be tested for infection with a dipstick urinalysis. The child will be asked to perform home recordings for seven days consisting of measurements of diaper weight and first morning voided volume and a two-day frequency-volume chart.
Arm Title
Urine collection, healthy children
Arm Type
Active Comparator
Arm Description
The child ́s weight and height will be registered. The children's urine will be tested for infection with a dipstick urinalysis.
Intervention Type
Diagnostic Test
Intervention Name(s)
Urine collection through a collecting device (Uridome®) for maximum 1 week
Intervention Description
The child will collect: Urine at bedtime before a wet and a dry night. Urine during a wet night through a collecting device. First morning voided volume following both a wet and a dry night.
Intervention Type
Diagnostic Test
Intervention Name(s)
Urine collection
Intervention Description
The child will collect: Urine at bedtime. First morning voided volume
Primary Outcome Measure Information:
Title
Proteins.
Description
By using mass spectrometry (proteomics). For all children, any proteins related to nocturnal polyuria will be detected.
Time Frame
Up to 1 week.
Title
Metabolites.
Description
By targeted mass spectrometry.
Time Frame
Up to 1 week.
Secondary Outcome Measure Information:
Title
Total urine volume in each sample.
Description
A urine volume for the "dry night" (first morning voided volume) and "wet night" (nighttime urine production + first morning voided volume) will be calculated.
Time Frame
Up to 1 week.
Title
Concentration of creatinine in the urine samples.
Description
A level for the "dry night" and "wet night" will be calculated.
Time Frame
Up to 1 week.
Title
Osmolality in the urine samples.
Description
By freezing-point depression. A level for the "dry night" and "wet night" will be calculated.
Time Frame
Up to 1 week.

10. Eligibility

Sex
Male
Minimum Age & Unit of Time
6 Years
Maximum Age & Unit of Time
14 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Monosymptomatic nocturnal enuresis with at least one dry night per week. Nocturnal polyuria defined as nocturnal urine production on wet nights greater than 130 % of expected bladder capacity for age. Normal bladder capacity defined as maximum voided volume excluding first morning voided volume bigger than expected bladder capacity for age. Exclusion Criteria: Recurrent urinary tract infections. Anamnestic, clinical or laboratory findings that can be related to diseases or conditions that might affect the parameters investigated. Neurological and/or known clinically significant anatomical abnormalities of the urinary tract. Former operations in the urinary tract. Ongoing medication that may interfere with the parameters tested. If the child is receiving treatment for nocturnal enuresis (desmopressin, alarm or anticholinergics), the treatment has to be paused 1 week before urine collection. Furthermore, we will include 10 children without nocturnal enuresis and otherwise healthy.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Søren Rittig, MD
Organizational Affiliation
Aarhus University Hospital
Official's Role
Principal Investigator
Facility Information:
Facility Name
Department of Paediatrics and Adolescent Medicine, Aarhus University Hospital
City
Aarhus
State/Province
Jylland
ZIP/Postal Code
8200
Country
Denmark

12. IPD Sharing Statement

Plan to Share IPD
Yes
Citations:
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21511300
Citation
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Citation
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Biomarkers in Urine for Children With Monosymptomatic Nocturnal Enuresis and Nocturnal Polyuria

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