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Effect of the Synbiotic Probinul-Neutro® on Gastrointestinal Symptoms and Plasma p-Cresol Level in Chronic Renal Failure

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02008331
Recruitment Status : Completed
First Posted : December 11, 2013
Last Update Posted : December 11, 2013
Information provided by (Responsible Party):
Bruna Guida, Federico II University

Brief Summary:
The interest on gastrointestinal (GI) dysfunction in CKD has been growing in the last years. it is now accepted that GI dysfunction in dialyzed patients may contribute to systemic microinflammation by promoting gut dysbiosis and bacterial translocation in the blood. Another mechanism by which GI dysfunction contributes to systemic symptoms in CKD is related to metabolic activity of the dysbiotic microflora growing in the gut of these patients to generate toxic compounds such as phenols, indoles, and amines. Epidemiological evidence has strongly linked one of these compounds, p-Cresol, to cardiovascular risk and mortality in CKD. In the present paper the investigators investigated the effect of a probiotic/prebiotic mixture on plasma p-cresol concentrations and GI symptoms and in CKD patients not on dialysis yet.

Condition or disease Intervention/treatment Phase
Chronic Kidney Disease Dietary Supplement: SYNBIOTIC Phase 4

Detailed Description:

In patients with chronic kidney disease (CKD), alterations in gut microbioma are posited to be responsible for gastrointestinal symptoms and generation of p-cresol, a uremic toxin, that has been associated to CKD progression and cardiovascular mortality.

This double blind randomized placebo controlled pilot study evaluates whether Probinul-neutro®, a synbiotic preparation that normalizes intestinal microflora, may lower plasma p-cresol concentrations and reduce gastrointestinal symptoms in non-dialyzed CKD patients.

Thirty patients on III-IV CKD stages were randomized to receive either Probinul neutro® or placebo for four weeks. Total plasma p-cresol concentrations was assessed at baseline, and 15 and 30 days after treatment start. At the same study times, ease and frequency of defecation, upper and lower abdominal pain, stool shape, borborygmi and flatus were quantified by subjective assessment questionnaires.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 30 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Study Start Date : April 2013
Actual Primary Completion Date : October 2013
Actual Study Completion Date : October 2013

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Kidney Failure
Drug Information available for: Cresol

Arm Intervention/treatment
Experimental: SYNBIOTIC
Patients of this group assumed Probinul-Neutro® po 5g three times a day for 30 days
Dietary Supplement: SYNBIOTIC

INTERVENTION: Probinul neutro® assumed three times a day far from meals as 5 g powder packets dissolved in water. Probinul neutro® contains 5×109 Lactobacillus plantarum, 2×109 Lactobacillus casei subp. rhamnosus and 2×109 Lactobacillus gasseri, 1×109 Bifidobacterium infantis and 1×109 Bifidobacterium longum, 1×109 Lactobacillus acidophilus, 1×109 Lactobacillus salivarus and 1×109 Lactobacillus sporogenes and 5×109 Streptococcus termophilus, prebiotic inulin (2.2 g; VB Beneo Synergy 1) and 1.3 g of tapioca-resistant starch.

PLACEBO: Tapioca-resistant starch powder similar in colour, texture and taste to the symbiotic mixture, assumed three times a day far from meals as 5 g powder packets dissolved in water.

Other Name: Probinul-Neutro® or PLACEBO

Placebo Comparator: PLACEBO
patients of this group received 5g of placebo 3 times a day for 30 days

Primary Outcome Measures :
  1. Changes in plasma p-cresol concentration [ Time Frame: 30 days ]
    Fasting blood samples were drawn for the p-cresol plasma level

Secondary Outcome Measures :
  1. composite outcome of gastrointestinal symptoms [ Time Frame: 30 days ]
    Patients were asked to fill in a form for the scored evaluation of gastrointestinal symptoms (upper and inferior abdominal pain, borborygmus and flatus defecation frequency or easeand stool), and stool shape (Bristol stool chart)

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • age >18 years
  • eGFR between 20 and 60 mL/min (stage 3-4 CKD, according to the K/DOQI CKD classification)

Exclusion Criteria:

  • severe infections
  • diabetes
  • malignancy
  • history of food intolerance
  • autoimmune disorders
  • severe malnutrition
  • clinical conditions requiring artificial feeding
  • kidney transplant

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02008331

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Federico II University of Naples
Naples, Italy, 80129
Sponsors and Collaborators
Federico II University
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Principal Investigator: Bruna Guida, MD Federico II University of Naples, ITALY
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Bruna Guida, MD, Federico II University Identifier: NCT02008331    
Other Study ID Numbers: Guida56
First Posted: December 11, 2013    Key Record Dates
Last Update Posted: December 11, 2013
Last Verified: December 2013
Keywords provided by Bruna Guida, Federico II University:
chronic kidney disease
Additional relevant MeSH terms:
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Kidney Diseases
Renal Insufficiency, Chronic
Renal Insufficiency
Kidney Failure, Chronic
Urologic Diseases