NCT04411758

Brief Summary

To evaluate the effects of propolis extract on inflammation in participants with chronic kidney disease. Specific objectives To assess before and after the intervention period:

  • The expression of transcription factors (nuclear factor-kB), antioxidant enzymes (heme-oxygenase-1), inflammasome receptor, peroxisome proliferator-activated receptor-γ, as well as the levels of inflammatory cytokines (IL-6, Tumor nuclear factor-α, C-reactive protein, interleukin 1) and E-selectin adhesion molecules;
  • The levels of protein expression of inflammatory markers and antioxidant enzymes;
  • The profile of the intestinal microbiota of stool samples from the research participants;
  • Plasma levels of substances reactive to thiobarbituric acid and oxidized low density lipoprotein as a marker of oxidative stress;
  • Routine and anthropometric laboratory variables, indicative of the metabolic profile of the research participants;
  • Assess blood pressure, 6-minute walk test, recovery heart rate and chair lift test to assess the functional capacity of the research participants;
  • Assess atherogenic risk;
  • Food intake and nutritional status; Compare data between the intervention and control groups.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
24

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jan 2021

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 28, 2020

Completed
5 days until next milestone

First Posted

Study publicly available on registry

June 2, 2020

Completed
7 months until next milestone

Study Start

First participant enrolled

January 12, 2021

Completed
3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 29, 2023

Completed
2 days until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2023

Completed
Last Updated

February 26, 2024

Status Verified

February 1, 2024

Enrollment Period

3 years

First QC Date

May 28, 2020

Last Update Submit

February 23, 2024

Conditions

Keywords

chronic kidney diseasenon-dialysispropolisinflammation

Outcome Measures

Primary Outcomes (3)

  • Change in cytokines plasma levels measured by ELISA after supplementation with propolis.

    IL-6, Tumor necrosis factor (TNF)

    4 months

  • Change the expression of transcription factors (nuclear factor-kB), antioxidant enzymes (heme-oxygenase-1), inflammasome, peroxisome proliferator-activated receptor-γ

    nuclear factor (NF)-kappa B

    4 months

  • Change the profile of the intestinal microbiota of stool samples

    uremic toxins

    4 months

Study Arms (2)

Placebo Group

PLACEBO COMPARATOR

Patients will receive 4 capsules (400mg/day) containing magnesium stearate, silicon dioxide and microcrystalline cellulose for 2 months

Dietary Supplement: Placebo

Propolis Group

EXPERIMENTAL

Patients will receive 4 capsules (400mg/day) containing dry EPP-AF® green propolis extract for 2 months

Dietary Supplement: Propolis

Interventions

PropolisDIETARY_SUPPLEMENT

Four capsules (400mg/day) containing dry EPP-AF® green propolis extract for 2 months and after washout, more two months crossover

Propolis Group
PlaceboDIETARY_SUPPLEMENT

Four capsules (400mg/day) containing magnesium stearate, silicon dioxide and microcrystalline cellulose for 2 months and after washout, more two months crossover

Placebo Group

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Aged 18 years or older
  • \- with fistula arteriovenous

You may not qualify if:

  • Patients pregnant
  • Smokers
  • Using antibiotics in the last three months
  • Using antioxidant supplements as antioxidant vitamins, probiotic, prebiotic, symbiotic and antibiotics in the last three months
  • Clinical diagnosis of infectious diseases
  • Clinical diagnosis of Cancer
  • Clinical diagnosis of AIDS - for PD patients - no peritonitis

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Denise Mafra

Niterói, Rio de Janeiro, Brazil

Location

Related Publications (3)

  • Fonseca L, Ribeiro M, Schultz J, Borges NA, Cardozo L, Leal VO, Ribeiro-Alves M, Paiva BR, Leite PEC, Sanz CL, Kussi F, Nakao LS, Rosado A, Stenvinkel P, Mafra D. Effects of Propolis Supplementation on Gut Microbiota and Uremic Toxin Profiles of Patients Undergoing Hemodialysis. Toxins (Basel). 2024 Sep 25;16(10):416. doi: 10.3390/toxins16100416.

  • Baptista BG, Fanton S, Ribeiro M, Cardozo LF, Regis B, Alvarenga L, Ribeiro-Alves M, Berretta AA, Shiels PG, Mafra D. The effect of Brazilian Green Propolis extract on inflammation in patients with chronic kidney disease on peritoneal dialysis: A randomised double-blind controlled clinical trial. Phytomedicine. 2023 Jun;114:154731. doi: 10.1016/j.phymed.2023.154731. Epub 2023 Mar 1.

  • Chermut TR, Fonseca L, Figueiredo N, de Oliveira Leal V, Borges NA, Cardozo LF, Correa Leite PE, Alvarenga L, Regis B, Delgado A, Berretta AA, Ribeiro-Alves M, Mafra D. Effects of propolis on inflammation markers in patients undergoing hemodialysis: A randomized, double-blind controlled clinical trial. Complement Ther Clin Pract. 2023 May;51:101732. doi: 10.1016/j.ctcp.2023.101732. Epub 2023 Jan 26.

MeSH Terms

Conditions

Renal Insufficiency, ChronicInflammation

Interventions

Propolis

Condition Hierarchy (Ancestors)

Renal InsufficiencyKidney DiseasesUrologic DiseasesFemale Urogenital DiseasesFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital DiseasesMale Urogenital DiseasesChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Resins, PlantBiopolymersPolymersMacromolecular SubstancesPlant ExudatesBiological ProductsComplex Mixtures

Study Officials

  • Denise Mafra, phd

    Universidade Federal Fluminense

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
HEALTH SERVICES RESEARCH
Intervention Model
CROSSOVER
Model Details: In this clinical trial, participants with CKD undergoing hemodialysis or peritoneal dialysis will be instructed to use 4 capsules of 500mg/day containing concentrated and standardized dry green propolis extract (EPP-AF®) for 2 months or placebo (4 capsules of 500mg/day of magnesium stearate, silicon dioxide and microcrystalline cellulose) for two months, and then the groups will be crossed and will receive the same amount of propolis as the first group.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 28, 2020

First Posted

June 2, 2020

Study Start

January 12, 2021

Primary Completion

December 29, 2023

Study Completion

December 31, 2023

Last Updated

February 26, 2024

Record last verified: 2024-02

Data Sharing

IPD Sharing
Will not share

Locations