KPs Supplement for Inflammation, Oxidative Stress and Lipid Abnormalities in CKD Patients.

NCT ID: NCT07260292

Last Updated: 2025-12-17

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

165 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-08-01

Study Completion Date

2024-08-01

Brief Summary

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This clinical investigation is designed to evaluate the potential therapeutic effects of kefir peptides as an adjunct intervention for chronic kidney disease (CKD) and clinical proteinuria. Patients diagnosed with stage 3 or 4 CKD will receive a three-month course of kefir peptide supplementation. Throughout the intervention period, the investigator will monitor renal function markers (blood urea nitrogen, serum creatinine), proteinuria (urine protein-to-creatinine ratio), inflammatory indicators (high-sensitivity C-reactive protein), and additional biochemical parameters relevant to CKD progression.

Detailed Description

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Background and Aim Chronic kidney disease (CKD) represents a substantial global public health burden, with prevalence rising due to population aging and an increased incidence of systemic conditions such as hypertension, diabetes mellitus, metabolic syndrome, and chronic exposure to nephrotoxic agents. Accumulation of uremic toxins in CKD contributes to gut dysbiosis, systemic inflammation, accelerated renal functional decline, and heightened cardiovascular risk.

Probiotics and postbiotics have been evaluated as potential adjunct therapies to slow CKD progression; however, conclusive evidence supporting their clinical effectiveness remains limited. Kefir peptides (KPs) contain bioactive constituents with documented antioxidant, antidiabetic, antithrombotic, antibacterial, anti-osteoporotic, and immunomodulatory properties. Based on these characteristics, KPs may offer therapeutic benefits in modulating renal function, systemic inflammation, and uremic toxin burden in individuals with advanced CKD.

The current investigation aims to examine the effects of kefir peptides on renal function and clinical proteinuria, and to explore possible mechanistic pathways contributing to these outcomes.

Methods A total of 165 participants were enrolled: 83 in the placebo group and 82 in the kefir peptide group. All participants consumed the assigned kefir formulation twice daily for three months. Blood and urine biochemical assessments were conducted at baseline (week 0), week 4, and week 12. Serum high-sensitivity C-reactive protein (hs-CRP), indoxyl sulfate (IS), and p-cresyl sulfate (PCS) levels were measured at baseline and at week 12. All study procedures and monitoring activities were performed by the investigator.

Conditions

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Chronic Kidney Disease Stage 3 Chronic Kidney Disease Stage 4 Proteinuria

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

This is a randomized, double-blind, placebo-controlled, parallel study
Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Outcome Assessors
Participants and investigators were unaware of group assignment; placebo was identical in appearance to study

Study Groups

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KEFPEP®

Powder (directly take the powder with appropriate amount of warm water)

Group Type EXPERIMENTAL

KEFPEP®

Intervention Type DIETARY_SUPPLEMENT

oral administration at a daily dosage of 2.4 grams for 12 weeks

Placebo

Powder (directly take the powder with appropriate amount of warm water)

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DIETARY_SUPPLEMENT

using regular yogurt powder as a substitute for KPs

Interventions

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KEFPEP®

oral administration at a daily dosage of 2.4 grams for 12 weeks

Intervention Type DIETARY_SUPPLEMENT

Placebo

using regular yogurt powder as a substitute for KPs

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Age: 30-82 years of age
* Chronic kidney disease stage 3 and 4
* Sign informed consent

Exclusion Criteria

* Acute illness
* Pregnancy
* Aboriginal descent
Minimum Eligible Age

30 Years

Maximum Eligible Age

82 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Jen Ai Hospital

UNKNOWN

Sponsor Role collaborator

National Chung Hsing University

OTHER

Sponsor Role lead

Responsible Party

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Chuan -Mu Chen

Chair Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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YU-HSIEN LIU, Master

Role: STUDY_DIRECTOR

Jen Ai Hospital

Locations

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Jen-Ai Hospital

Taichung, , Taiwan

Site Status

Countries

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Taiwan

References

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Liu YH, Chen YH, Ko CH, Kuo CW, Yen CC, Chen W, Chong KY, Chen CM. SOD3 and IL-18 Predict the First Kidney Disease-Related Hospitalization or Death during the One-Year Follow-Up Period in Patients with End-Stage Renal Disease. Antioxidants (Basel). 2022 Jun 18;11(6):1198. doi: 10.3390/antiox11061198.

Reference Type BACKGROUND
PMID: 35740095 (View on PubMed)

Other Identifiers

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111-89

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

PHP2201H04

Identifier Type: -

Identifier Source: org_study_id