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CompletedNCT05109455MANOTRASUpdated Mar 24, 2023

Effects of a Food Supplement in the Prevention of Urinary Tract Infections in Kidney Transplant Patients.

A Phase 4 interventional study of MANOSAR® and Proanthocyanidins in Kidney Transplant Infection, sponsored by Arafarma Group, S.A.. Completed at 1 site in Spain. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-03-24.

Sponsored by Arafarma Group, S.A. · Phase 4, Interventional, and Prevention

From the registry’s dates

  • Registered 2 years 6 months after the study started (first participant enrolled Apr 2019, registered Oct 2021).
Phase
Phase 4
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The incidence of Urinary tract infections (UTIs) is very high in kidney transplant patients. Most UTIs occur during the first six months (82% within the first three months) of kidney transplantation and are frequently recurrent. The component D-mannose of our authorized food supplement acts by inhibiting the adherence of E.coli to the urothelium. It also has a controlled release formula that ensures the presence in urine of D-mannose and the other components during 24 hours. This is the reason why this experimental study aims to demonstrate that the oral intake of this food supplement is effective in the prevention of UTIs in kidney transplant patients.

Read the detailed description

The study tries to analyze the impact of a food supplement (Manosar®) on the incidence of urinary infections in patients undergoing kidney transplantation.

The patients will be randomly distributed (1: 1 ratio) into two treatment groups of 30 patients each. In one group, they will be treated with Manosar®, and in the other group they will be treated with Proanthocyanidins. All patients will be followed for 6 months, being the first three months of the study drug administration.

This experimental study is double-blinded and there are 7 monthly study visits. Properties of D-mannose and Proanthocyanidins make interesting to evaluate the clinical benefit of the use of food supplements with D-mannose and Proanthocyanidins in order to prevent the UTIs without antibiotics.

02

Conditions studied

03

In context

Infections

6,687 studies on the registry are indexed under Infections; 807 are open to participants now.

This study's enrollment of 60 is below the median of 120 across 4,200 interventional studies indexed under Infections.

Browse Infections studies →

Lead sponsor

Arafarma Group, S.A. is the lead sponsor of 7 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • ≥ 18 years.
  • Recipients of a cadaveric donor kidney transplant.
  • Patients who are trained to give their informed consent.

Exclusion criteria

Exclusion Criteria:

  • Recipients of a kidney transplant who do not authorize their participation in the study by informed consent.
  • Recipients of a transplant of an organ other than the kidney.
  • Patients with Bricker or Studer neobladders.
  • Patients in need of intermittent self-catheterization prior to kidney transplantation.
  • Any medical, psychiatric or family condition that, in the opinion of the investigator, may endanger or compromise the patient's ability to participate in the study.
  • Pregnant or lactating patients.
  • Having participated in clinical trials in the previous 3 months or participating in another clinical study promoted by the pharmaceutical industry, in which the promoter already establishes the treatment for UTI.
05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
60 participants (actual)

Study arms

  • Experimental
    Food supplement

    MANOSAR® is an authorized food supplement that contains D-mannose, Proanthocyanidins, Ursolic Acis, vitamin complexes and ions, and protects against urinary tract infections.

    Dietary Supplement: MANOSAR®

  • Active comparator
    Comparator

    The comparator are Proanthocyanidins of continuous-release, which are isolated from cranberry, and prevents the adhesion of uropathogenic bacteria such a E.coli to the wall of the urothelium.

    Dietary Supplement: Proanthocyanidins

Interventions

  • Dietary supplementMANOSAR®

    MANOSAR® is an authorized food supplement that contains D-mannose, Proanthocyanidins, Ursolic Acis, vitamin complexes and ions, and protects against urinary tract infections.

    Also known as: Food Supplement

  • Dietary supplementProanthocyanidins

    The comparator are Proanthocyanidins of continuous-release, which are isolated from cranberry, and prevents the adhesion of uropathogenic bacteria such a E.coli to the wall of the urothelium.

06

What researchers measure

Primary outcomes

  1. Change on the incidence of urinary tract infections.

    To assess the magnitude of the change from baseline incidence of urinary tract infections in kidney transplant patients at one month, two months and three months of treatment and at four, five and six months of follow-up.

    Time frame: Baseline to 1, 2, 3, 4, 5 and 6 months

Secondary outcomes

  1. Rate of three types of urinary tract infection: asymptomatic bacteriuria, cystitis, and pyelonephritis between both treatment groups.

    All information regarding these infections will be recorded.

    Time frame: Baseline to all study visits up to 6 months.

  2. Rate of urinary tract infections caused by E.coli.

    E. coli will be assessed by urine cultures, which are performed according to the usual clinical practice of the site (weekly - from Visit 0 to Visit 1 (4 urine cultures); fortnightly - from Visit 1 to Visit 3 (4 urine cultures); monthly - from Visit 3 to Visit 6 (3 urine cultures)). Also if there is suspected infection based on clinical criteria there will be performed also an urine culture.

    Time frame: Baseline to all study visits up to 6 months.

  3. Rate of patients who developed bacteremia during the episode of pyelonephritis.

    This will be assessed in relation to the performance of urine cultures.

    Time frame: Baseline to all study visits up to 6 months.

  4. Rate of safety episodes between both treatment groups.

    All episodes will be recorded, whether considered minor or serious, drug-related or not.

    Time frame: From Visit 1, and at each visit, up to 6 months.

  5. Rate of incidence of delayed renal graft function.

    This is assessed by the need for a hemodialysis session.

    Time frame: From Visit 0 to Visit 1, up to 1 month.

  6. Change from baseline in both treatment groups of concentration of glucose in renal function.

    The concentration of glucose (mmol/L) is assessed by the value results of the laboratory analysis, which are completed according to the usual clinical practice of the site for the follow-up of kidney transplant patients: weekly - from Visit 0 to Visit 1 (4 tests); fortnightly - from Visit 1 to Visit 3 (4 tests); monthly - from Visit 3 to Visit 6 (3 tests).

    Time frame: Baseline to all study visits up to 6 months.

  7. Rate of histologically confirmed acute rejection and number of patients who lost the kidney graft.

    Assessed during the 6 months study.

    Time frame: Baseline to all study visits up to 6 months.

  8. Rate of bacterial colonization of the double J catheter in both treatment groups.

    This is assessed by the microbiological analysis of the tips of the double J catheter will be performed between Visit 0 and Visit 1, once it has been removed 21-27 days after kidney transplantation.

    Time frame: From Visit 0 to Visit 1, up to 1 month.

  9. Type of bacterial colonies of the double J catheter

    This is assessed by the microbiological analysis of the tips of the double J catheter will be performed between Visit 0 and Visit 1, once it has been removed 21-27 days after kidney transplantation.

    Time frame: From Visit 0 to Visit 1, up to 1 month.

  10. Change from baseline in both treatment groups of concentration of Glomerular Filtration Rate (GFR).

    The calculation of GFR (ml/min) is estimated with a blood test, which is completed according to the usual clinical practice of the site for the follow-up of kidney transplant patients: weekly - from Visit 0 to Visit 1 (4 tests); fortnightly - from Visit 1 to Visit 3 (4 tests); monthly - from Visit 3 to Visit 6 (3 tests).

    Time frame: Baseline to all study visits up to 6 months.

  11. Change from baseline in both treatment groups of concentration of serum creatinine in renal function.

    The concentration of serum creatinine (µmol/L) is assessed by the value results of the laboratory analysis, which are completed according to the usual clinical practice of the site for the follow-up of kidney transplant patients: weekly - from Visit 0 to Visit 1 (4 tests); fortnightly - from Visit 1 to Visit 3 (4 tests); monthly - from Visit 3 to Visit 6 (3 tests).

    Time frame: Baseline to all study visits up to 6 months.

  12. Change from baseline in both treatment groups of concentration of sodium in renal function.

    The concentration of sodium (mEq/L) is assessed by the value results of the laboratory analysis, which are completed according to the usual clinical practice of the site for the follow-up of kidney transplant patients: weekly - from Visit 0 to Visit 1 (4 tests); fortnightly - from Visit 1 to Visit 3 (4 tests); monthly - from Visit 3 to Visit 6 (3 tests).

    Time frame: Baseline to all study visits up to 6 months.

  13. Change from baseline in both treatment groups of concentration of potassium in renal function.

    The concentration of potassium (mEq/L) is assessed by the value results of the laboratory analysis, which are completed according to the usual clinical practice of the site for the follow-up of kidney transplant patients: weekly - from Visit 0 to Visit 1 (4 tests); fortnightly - from Visit 1 to Visit 3 (4 tests); monthly - from Visit 3 to Visit 6 (3 tests).

    Time frame: Baseline to all study visits up to 6 months.

07

Study locations

1 site
  • Hospital Universitari de Bellvitge
    L'Hospitalet de Llobregat, Barcelona, Spain
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 24, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05109455
Lead sponsor
Arafarma Group, S.A.
Responsible party
Sponsor
First posted
Nov 5, 2021
Start date
Apr 16, 2019
Primary completion
Mar 25, 2021
Completion
Feb 17, 2023
Last update
Mar 24, 2023

Study contacts

Edoardo Melilli, Doctor
principal investigator · Unidad de Trasplante Renal - Hospital Universitari de Bellvitge

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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