Clinical trial NCT06573827: The Urinary Microbiome and Its Relationship to the Urinary and Serum Metabolome in Healthy Peri- and Postmenopausal Women
Official title: The Urinary Microbiome and Its Relationship to the Urinary and Serum Metabolome in Healthy Peri- and Postmenopausal Women
Study type: OBSERVATIONAL
Overall status: NOT_YET_RECRUITING
Conditions: Urinary Tract Infections
Keywords: microbiome
urinary metabolome
urinary bladder
menopause
Lead sponsor: University Hospital Ostrava
Sponsor class: OTHER
First posted: 2024-08-27
Enrollment: 100
Sex: FEMALE
Minimum age (years): 50
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: CASE_ONLY
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Healthy peri- and post-menopausal female volunteers.

Brief summary: The presented project aims to characterize the microbiome of healthy peri- and postmenopausal women and its correlation with the metabolome of urine and serum.

Detailed description: At the beginning of their visit to the Blood Center of the University Hospital Ostrava, blood and plasma donors will be approached by one of the authorized members of the team with information about the possibility of participating in this study. The course of the study will be explained to them in detail, including the sampling methodology, their processing, and further handling. If the subject is interested in participating in the study, they will give written informed consent to participate in the study. Subsequently, the inclusion and exclusion criteria for participation in the study will be verified. If these are not met, the subject will be excluded from the study. Furthermore, the criteria for current valid blood and urine sampling will be verified. If the conditions for valid sampling are not met and the participant is still interested in participating in the study, she will be offered a new sampling date. If the study subject fulfills the conditions of valid sampling, she will fill out a simple questionnaire, which will be used to obtain data on basic demographic characteristics. Their knowledge is essential for the correct interpretation of urine and serum test results. Blood and serum will then be collected. In justified cases, sampling can also be carried out at the Urology Department of the University Hospital Ostrava. After submitting the first sample, the participant will be asked to submit another urine and serum sample in 3-6 months. By submitting the 2nd urine and serum sample, the participant ends her participation in the study.

Eligibility criteria: Inclusion Criteria:

* Women over 50 years old
* Consent to participate in the study
* Willingness to take urine and blood samples according to the protocol

Exclusion Criteria:

* Known congenital developmental defects of the urinary tract (congenital hydronephrosis, vesicoureteral reflux, renal agenesis, and hypoplasia, multicystic and polycystic kidneys)
* Recurrent urinary tract infections (more than 3 episodes in the last 12 months)
* Presence of any lower-urinary tract symptoms (urgency, frequency, incontinence, stranguria, urge to urinate, weak urine stream, the feeling of post-micturition residue)
* The presence of a foreign body in the urinary tract - urolithiasis, urinary catheter, ureteral stent
* Acute or chronic diseases with possible influence on lower-urinary tract function
* Medications with possible influence on lower-urinary tract function
* Rheumatoid arthritis
* Diabetes mellitus

Primary outcomes:
measure: Microbiome alpha-diversity
timeFrame: 6 months
measure: Microbiome beta-diversity
timeFrame: 6 months
Secondary outcomes:
measure: Correlation of microbiome alpha-diversity and serum metabolome
timeFrame: 6 months
Other outcomes:
Locations:
city: Ostrava
country: Czechia
facility: University Hospital Ostrava
state: Moravian-Silesian Region
Study officials:
affiliation: University Hospital Ostrava
name: Jan Krhut, prof.,MD,PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Cho I, Blaser MJ. The human microbiome: at the interface of health and disease. Nat Rev Genet. 2012 Mar 13;13(4):260-70. doi: 10.1038/nrg3182.
citation: Turnbaugh PJ, Ley RE, Hamady M, Fraser-Liggett CM, Knight R, Gordon JI. The human microbiome project. Nature. 2007 Oct 18;449(7164):804-10. doi: 10.1038/nature06244.
citation: Monsen T, Ryden P. Flow cytometry analysis using sysmex UF-1000i classifies uropathogens based on bacterial, leukocyte, and erythrocyte counts in urine specimens among patients with urinary tract infections. J Clin Microbiol. 2015 Feb;53(2):539-45. doi: 10.1128/JCM.01974-14. Epub 2014 Dec 3.
citation: Mueller ER, Wolfe AJ, Brubaker L. Female urinary microbiota. Curr Opin Urol. 2017 May;27(3):282-286. doi: 10.1097/MOU.0000000000000396.
citation: Morand A, Cornu F, Dufour JC, Tsimaratos M, Lagier JC, Raoult D. Human Bacterial Repertoire of the Urinary Tract: a Potential Paradigm Shift. J Clin Microbiol. 2019 Feb 27;57(3):e00675-18. doi: 10.1128/JCM.00675-18. Print 2019 Mar.
citation: Salabura A, Luniewski A, Kucharska M, Myszak D, Dolegowska B, Ciechanowski K, Kedzierska-Kapuza K, Wojciuk B. Urinary Tract Virome as an Urgent Target for Metagenomics. Life (Basel). 2021 Nov 19;11(11):1264. doi: 10.3390/life11111264.
citation: Nelson DE, Dong Q, Van der Pol B, Toh E, Fan B, Katz BP, Mi D, Rong R, Weinstock GM, Sodergren E, Fortenberry JD. Bacterial communities of the coronal sulcus and distal urethra of adolescent males. PLoS One. 2012;7(5):e36298. doi: 10.1371/journal.pone.0036298. Epub 2012 May 11.
citation: Antunes-Lopes T, Vale L, Coelho AM, Silva C, Rieken M, Geavlete B, Rashid T, Rahnama'i SM, Cornu JN, Marcelissen T; EAU Young Academic Urologists (YAU) Functional Urology Working Group. The Role of Urinary Microbiota in Lower Urinary Tract Dysfunction: A Systematic Review. Eur Urol Focus. 2020 Mar 15;6(2):361-369. doi: 10.1016/j.euf.2018.09.011. Epub 2018 Sep 28.
citation: Colella M, Topi S, Palmirotta R, D'Agostino D, Charitos IA, Lovero R, Santacroce L. An Overview of the Microbiota of the Human Urinary Tract in Health and Disease: Current Issues and Perspectives. Life (Basel). 2023 Jun 30;13(7):1486. doi: 10.3390/life13071486.
citation: Bar N, Korem T, Weissbrod O, Zeevi D, Rothschild D, Leviatan S, Kosower N, Lotan-Pompan M, Weinberger A, Le Roy CI, Menni C, Visconti A, Falchi M, Spector TD; IMI DIRECT consortium; Adamski J, Franks PW, Pedersen O, Segal E. A reference map of potential determinants for the human serum metabolome. Nature. 2020 Dec;588(7836):135-140. doi: 10.1038/s41586-020-2896-2. Epub 2020 Nov 11.
citation: Lee-Sarwar KA, Lasky-Su J, Kelly RS, Litonjua AA, Weiss ST. Metabolome-Microbiome Crosstalk and Human Disease. Metabolites. 2020 May 1;10(5):181. doi: 10.3390/metabo10050181.