Asymptomatic BacteriuriaNCT05055856
Asymptomatic Bacteriuria, Hyponatremia and Geri-atric Syndrome
A study testing urine sample and Blood and urine sample in people with Asymptomatic Bacteriuria and Frailty, run by Universitair Ziekenhuis Brussel at 1 site in Belgium.
Trial summary
The population is aging. Aged people are more prown to develop frailty. The causes of frailty are multifactorial and are being investigated in research settings. Cardiovascular diseases, inflammaging and changes in microbiota have been associated with frailty and geriatric syndrome. Read more about this study
- Who is it for?
- Ages 70 years and olderHealthy volunteers can take part
- Conditions the study is for
- Asymptomatic Bacteriuria, Frailty, Geriatric Syndrome
- What is being tested?
- urine sample and Blood and urine sample
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 36 participants
- Where
- 1 siteBelgium
- Study dates
- 30 Oct 2021to 30 Nov 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 70 years and older
- All sexes
- Healthy volunteers accepted
- Older adult
Who may be able to join
- ≥ 70 years old
- Informed consent
- Presence of the geriatric syndrome (dementia, depression, frailty, dependence, fall, undernu-trition, incontinence…) or not in function of the group
Who cannot join
- Symptoms of urinary tract infection
- Confusion
- CRP > 5 mg/L
- Previous urological history
- Intake of antibiotics
- Intake of diuretics
- Intake of SSRI
Trial locations and contacts
1 site in 1 country.
About this study
The population is aging. Aged people are more prown to develop frailty. The causes of frailty are multifactorial and are being investigated in research settings. Cardiovascular diseases, inflammaging and changes in microbiota have been associated with frailty and geriatric syndrome. The prevalence of asymptomatic bacteriuria and SIADH-related hyponatremia is also important in aging and associated with inflammaging. The aim of this study is to examine, if asymptomatic bacteriuria and SIADH-related hyponatremia could be markers for frailty and geriatric syndrome.
Read the detailed description
The demographic evolution represents a challenge for the general public health. The global population, especially in the developed countries, is aging. Aging is associated with a decrease of physio-logical functions leading to frailty. Frailty is an important concept in geriatric medicine: it is a biological syndrome of decreased reserve and resistance to stressors resulting from cumulative decline across multiple physiological systems (like osteopenia, sarcopenia, dysregulation of hypothalamic axis …). Factors that lead to frailty influence each other and can be self-perpetuating. Frailty is a geriatric syndrome but there are a lot of other geriatric syndrome such as falls, undernutrition,… When young people are sick, they present mostly more than one symptom who can be referred to one disease or one cause. In contrast, geriatric patients will present one symptom, such as confusion, fall, undernutrition,… which can be referred to multifactorial causes or diseases. This is the concept of geriatric syndrome.
Frailty or geriatric syndrome has been related to inflammaging. Inflammaging, characterized by an increase of circulating cytokines such as interleukin (IL)-6 and acute phase proteins, is a feature of immunosenescence. This process of immunosenescence is suggested to participate in the pathogene-ses of frailty and geriatric syndromes. The possible origins of inflammaging are multifactorial and controversies still exist: cardiovascular (CV) diseases, depression and chronic cytomegalovirus (CMV) infections are associated with this pro-inflammatory state. These comorbidities are highly prevalent in geriatric patients and could therefore contribute to the association between low-grade inflammation, frailty and geriatric syndromes.
The intestinal barrier and microbiota are associated with frailty and inflammaging. Multiple potential pathways exist through which the gut microbiota can provoke inflammaging (through TLR, stimulation of immune cells, translocation, endotoxines et cetera). In the same way of thinking, asymptomatic bacteriuria could also be responsible of inflammaging and frailty. The prevalence of asymptomatic bacteriuria is increased with aging and in patient with diabetes. It has also been shown to be associated with chronic inflammation (sTNFR and TNFα), increased WBCC and neutrophils. To our knowledge, it is unknown if asymptomatic bacteriuria is associated with frailty.
Hyponatremia is highly prevalent in hospitalized patients. SIADH-related hyponatremia represents 1/3 of the causes of hyponatremia. The incidence of SIADH related hyponatremia is believed to be higher in older people. It is associated with an increased risk of falls, confusion and mortality. The physiological balance between water and salt changes with aging. SIADH is classified as an euvo-lemic status; however, it is caused by an excess of water. The inappropriate secretion of vasopressin( ADH=anti-diuretic hormone) increases the expression of the aquaporins in the renal tubules. These aquaporines increase the reabsorption of water resulting in an altered ratio of reabsorption of water and Salt, leading to hyponatremia. SIADH-related hyponatremia is also associated with inflammation. IL-6 and IL-1β are able to stimulate the pituitary-hypothalamic axis to secrete vasopressin. SIADH related hyponatremia could be also a sign of inflammaging and related with frailty.
- Conditions
- Asymptomatic Bacteriuria, Frailty, Geriatric Syndrome, SIADH
- Being tested
- urine sample, Blood and urine sample
- Medical subject headings
- Frailty, Inappropriate ADH Syndrome
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
urine sampleDiagnostic test
Each participant will give a urine sample for diagnose of asymptomatic bacteriuria
Blood and urine sampleDiagnostic test
Each participant will give a urine and blood sample for diagnose of SIADH
| Study group | Role | What they receive |
|---|---|---|
| Frailty or more | Active comparator | patients with the geriatric syndrome who will be recruited at the geriatric out patient clinic Receives: Diagnostic Test: urine sample; Diagnostic Test: Blood and urine sample |
| healthy | Placebo comparator | healthy aged people defined as in the modified SENIEUR protocol who will be recruited by an extern call thanks UZ Brussel website of thanks to staff's knowledge Receives: Diagnostic Test: urine sample; Diagnostic Test: Blood and urine sample |
What is being measured
The primary outcome is the main question the study is designed to answer.
asymptomatic bacteriuria
If the presence of an asymptomatic bacteriuria is associated with frailty or the geriatric syn-drome
Measured: At baseline
SIADH
If the presence of SIADH-related hyponatremia is associated with frailty or geriatric syn-drome
Measured: At baseline
SIADH and inflammaging
If the presence of SIADH-related hyponatremia is associated with a low grade chronic in-flammation as demonstrated by a raised c-reactive protein (CRP).
Measured: At baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Sep 2021
- Study start30 Oct 2021
- Primary completion30 Nov 2024
- Study completion30 Nov 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for Asymptomatic BacteriuriaStudies of the same condition, open and under way.
- More trials run by Universitair Ziekenhuis BrusselThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Model description
- academic, prospective study
- Masking
- None (open label)
- Enrolment
- 36 participants (actual)
Sponsor and investigators
- Lead sponsor
- Universitair Ziekenhuis Brussel
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Nathalie Compte, PhD, Principal investigator, Universitair Ziekenhuis Brussel
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05055856
- Sponsor's protocol ID
- asymptomatische bacteriuria
- Status last verified
- Mar 2025
- First submitted
- 14 Sep 2021
- Last updated
- 28 Mar 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Fulop T, Witkowski JM, Olivieri F, Larbi A. The integration of inflammaging in age-related diseases. Semin Immunol. 2018 Dec;40:17-35. doi: 10.1016/j.smim.2018.09.003. Epub 2018 Oct 2.
PubMed 30287177Prio TK, Bruunsgaard H, Roge B, Pedersen BK. Asymptomatic bacteriuria in elderly humans is associated with increased levels of circulating TNF receptors and elevated numbers of neutrophils. Exp Gerontol. 2002 May;37(5):693-9. doi: 10.1016/s0531-5565(02)00002-5.
PubMed 11909686Swart RM, Hoorn EJ, Betjes MG, Zietse R. Hyponatremia and inflammation: the emerging role of interleukin-6 in osmoregulation. Nephron Physiol. 2011;118(2):45-51. doi: 10.1159/000322238. Epub 2010 Dec 22.
PubMed 21196778Bergsten G, Wullt B, Svanborg C. Escherichia coli, fimbriae, bacterial persistence and host response induction in the human urinary tract. Int J Med Microbiol. 2005 Oct;295(6-7):487-502. doi: 10.1016/j.ijmm.2005.07.008.
PubMed 16238023
Study at a glance
From the registry record, last updated by the sponsor on 28 Mar 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Asymptomatic Bacteriuria, Hyponatremia and Geri-atric Syndrome
- ClinicalTrials.gov ID
- NCT05055856
- Acronym / sponsor ID
- asymptomatische bacteriuria
- Conditions
- Asymptomatic Bacteriuria, Frailty, Geriatric Syndrome, SIADH
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 36 participants (actual)
- Lead sponsor
- Universitair Ziekenhuis BrusselUniversity, hospital or other
- Study start
- 30 Oct 2021 (actual)
- Primary completion
- 30 Nov 2024 (actual)
- Study completion
- 30 Nov 2024 (actual)
- First posted
- 24 Sep 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The population is aging. Aged people are more prown to develop frailty. The causes of frailty are multifactorial and are being investigated in research settings. Cardiovascular diseases, inflammaging and changes in microbiota have been associated with frailty and geriatric syndrome. The prevalence of asymptomatic bacteriuria and SIADH-related hyponatremia is also important in aging and associated with inflammaging. The aim of this study is to examine, if asymptomatic bacteriuria and SIADH-related hyponatremia could be markers for frailty and geriatric syndrome.
Detailed description
The demographic evolution represents a challenge for the general public health. The global population, especially in the developed countries, is aging. Aging is associated with a decrease of physio-logical functions leading to frailty. Frailty is an important concept in geriatric medicine: it is a biological syndrome of decreased reserve and resistance to stressors resulting from cumulative decline across multiple physiological systems (like osteopenia, sarcopenia, dysregulation of hypothalamic axis …). Factors that lead to frailty influence each other and can be self-perpetuating. Frailty is a geriatric syndrome but there are a lot of other geriatric syndrome such as falls, undernutrition,… When young people are sick, they present mostly more than one symptom who can be referred to one disease or one cause. In contrast, geriatric patients will present one symptom, such as confusion, fall, undernutrition,… which can be referred to multifactorial causes or diseases. This is the concept of geriatric syndrome.
Frailty or geriatric syndrome has been related to inflammaging. Inflammaging, characterized by an increase of circulating cytokines such as interleukin (IL)-6 and acute phase proteins, is a feature of immunosenescence. This process of immunosenescence is suggested to participate in the pathogene-ses of frailty and geriatric syndromes. The possible origins of inflammaging are multifactorial and controversies still exist: cardiovascular (CV) diseases, depression and chronic cytomegalovirus (CMV) infections are associated with this pro-inflammatory state. These comorbidities are highly prevalent in geriatric patients and could therefore contribute to the association between low-grade inflammation, frailty and geriatric syndromes.
The intestinal barrier and microbiota are associated with frailty and inflammaging. Multiple potential pathways exist through which the gut microbiota can provoke inflammaging (through TLR, stimulation of immune cells, translocation, endotoxines et cetera). In the same way of thinking, asymptomatic bacteriuria could also be responsible of inflammaging and frailty. The prevalence of asymptomatic bacteriuria is increased with aging and in patient with diabetes. It has also been shown to be associated with chronic inflammation (sTNFR and TNFα), increased WBCC and neutrophils. To our knowledge, it is unknown if asymptomatic bacteriuria is associated with frailty.
Hyponatremia is highly prevalent in hospitalized patients. SIADH-related hyponatremia represents 1/3 of the causes of hyponatremia. The incidence of SIADH related hyponatremia is believed to be higher in older people. It is associated with an increased risk of falls, confusion and mortality. The physiological balance between water and salt changes with aging. SIADH is classified as an euvo-lemic status; however, it is caused by an excess of water. The inappropriate secretion of vasopressin( ADH=anti-diuretic hormone) increases the expression of the aquaporins in the renal tubules. These aquaporines increase the reabsorption of water resulting in an altered ratio of reabsorption of water and Salt, leading to hyponatremia. SIADH-related hyponatremia is also associated with inflammation. IL-6 and IL-1β are able to stimulate the pituitary-hypothalamic axis to secrete vasopressin. SIADH related hyponatremia could be also a sign of inflammaging and related with frailty.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- academic, prospective study
| Arm | Type | Receives |
|---|---|---|
| Frailty or more | Active comparator | Diagnostic Test: urine sample, Diagnostic Test: Blood and urine samplepatients with the geriatric syndrome who will be recruited at the geriatric out patient clinic |
| healthy | Placebo comparator | Diagnostic Test: urine sample, Diagnostic Test: Blood and urine samplehealthy aged people defined as in the modified SENIEUR protocol who will be recruited by an extern call thanks UZ Brussel website of thanks to staff's knowledge |
Who may qualify
- Ages
- 70 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Older adult
Key inclusion criteria (3 listed)
- ≥ 70 years old
- Informed consent
- Presence of the geriatric syndrome (dementia, depression, frailty, dependence, fall, undernu-trition, incontinence…) or not in function of the group
Key exclusion criteria (7 listed)
- Symptoms of urinary tract infection
- Confusion
- CRP > 5 mg/L
- Previous urological history
- Intake of antibiotics
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| urine sampleEach participant will give a urine sample for diagnose of asymptomatic bacteriuria | Diagnostic test | Frailty or more, healthy |
| Blood and urine sampleEach participant will give a urine and blood sample for diagnose of SIADH | Diagnostic test | Frailty or more, healthy |
Primary outcome
asymptomatic bacteriuria
Time frame: At baseline
If the presence of an asymptomatic bacteriuria is associated with frailty or the geriatric syn-drome
SIADH
Time frame: At baseline
If the presence of SIADH-related hyponatremia is associated with frailty or geriatric syn-drome
SIADH and inflammaging
Time frame: At baseline
If the presence of SIADH-related hyponatremia is associated with a low grade chronic in-flammation as demonstrated by a raised c-reactive protein (CRP).
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Mar 2025.
- Background: PubMed 30287177Fulop T, Witkowski JM, Olivieri F, Larbi A. The integration of inflammaging in age-related diseases. Semin Immunol. 2018 Dec;40:17-35. doi: 10.1016/j.smim.2018.09.003. Epub 2018 Oct 2.
- Background: PubMed 11909686Prio TK, Bruunsgaard H, Roge B, Pedersen BK. Asymptomatic bacteriuria in elderly humans is associated with increased levels of circulating TNF receptors and elevated numbers of neutrophils. Exp Gerontol. 2002 May;37(5):693-9. doi: 10.1016/s0531-5565(02)00002-5.
- Background: PubMed 21196778Swart RM, Hoorn EJ, Betjes MG, Zietse R. Hyponatremia and inflammation: the emerging role of interleukin-6 in osmoregulation. Nephron Physiol. 2011;118(2):45-51. doi: 10.1159/000322238. Epub 2010 Dec 22.
- Background: PubMed 16238023Bergsten G, Wullt B, Svanborg C. Escherichia coli, fimbriae, bacterial persistence and host response induction in the human urinary tract. Int J Med Microbiol. 2005 Oct;295(6-7):487-502. doi: 10.1016/j.ijmm.2005.07.008.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Nathalie Compte, PhD principal investigator
Universitair Ziekenhuis Brussel
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing urine sample and Blood and urine sample in people with Asymptomatic Bacteriuria and Frailty, run by Universitair Ziekenhuis Brussel at 1 site in Belgium.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 28 Mar 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Belgium. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
asymptomatic bacteriuria (time frame: At baseline). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05055856, which also lists 4 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Mar 2025.