Effects of Jaboticaba (Plinia Cauliflora) Supplementation in Chronic Kidney Disease Patients

Jaboticaba (Plinia Cauliflora) as a Strategy to Modulate Inflammation, Oxidative Stress, and Gut Dysbiosis in Patients With Chronic Kidney Disease

The increase prevalence of chronic kidney disease (CKD) over the years represent a significant public health problem. The role of inflammation and oxidative stress in the pathophysiology of CKD, as well as progression and comorbidities, is already well consolidated. The gut microbiota composition imbalance may also be a risk factor contributing to the increased conditions mentioned above, and to uremic toxins release and endotoxemia. The literature has indicated the use of bioactive compounds as a nonpharmacological treatment strategies for the management of non-communicable diseases (NCDs), such as CKD and its complications. In this context, jaboticaba (Plinia Cauliflora) emerges as a potential therapeutic approach as it is a source of phenolic compounds, such as anthocyanins, flavonols, ellagitannins, and phenolic acids. Such phenolic compounds may have beneficial effects in patients with CKD, such as anti-inflammatory, antioxidant, modulation of the intestinal microbiota, hypotensive and hypoglycemic effects. These combined effects can help manage risk factors and CKD itself, and associated complications. Therefore, this research project aims to add scientific knowledge, providing a non-pharmacological therapeutic approach to be implemented in clinical practice and in the care of patients with CKD, with the aim of modulating inflammation, oxidative stress, microbiota composition, and improving the quality of life of these patients. Therefore, this study aims to evaluate the effects of jaboticaba (Plinia Cauliflora) supplementation on complications associated with CKD.

Study Overview

• Status: Not yet recruiting
• Conditions: Chronic Kidney Diseases
• Intervention / Treatment: Dietary supplement: Jaboticaba Peel Extract; Other: Placebo

Detailed Description

This is a chronic study, which consists of a longitudinal, randomized, double-blind, crossover clinical study, with a washout period and placebo-controlled trial. Thirty patients with CKD undergoing hemodialysis will be selected (according to sample calculation, considering p=0.05 and test power of 80%). Randomization will be computerized in a 1:1 ratio, with a block size of 15 (Jaboticaba and Control groups), to receive jaboticaba peel extract or placebo. Eligible patients of both genders, previously evaluated and authorized by the medical and nutritionist team, will be invited to participate in the research in person and verbally, during nutritional consultations at the Prodoctor Hemodialysis Clinic. The intervention consists of supplementing 4 capsules/day, providing 3.3g of jabuticaba peel extract daily, containing 600mg of phenolic compounds, or the same amount of placebo, corn starch, for one month. After the end of this first intervention, blood and fecal samples will be collected again. Followed by a 2-month washout period. After 2 months, blood and fecal samples will be collected again from these patients. The crossover will then begin, the second moment of supplementation in which the patients who received the jaboticaba peel extract in the first moment start to receive the placebo, and the patients who received the placebo initially began to receive jabuticaba peel extract supplementation for one month. At the end of the second supplementation period, blood and fecal samples will be collected.

• Study Type: Interventional
• Enrollment (Estimated): 30
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Denise Mafra, Phd; Phone Number: +55 21 985683003; Email: dmafra30@gmail.com

Study Locations

• Brazil
  • Rio de Janeiro
    • Rio de Janeiro, Rio de Janeiro, Brazil, 22260050
      • Denise Mafra

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Aged 18 to 75 years
• Clinical diagnosis of Chronic Kidney Disease
• Conservative treatment group: CKD stages 3 and 5 receiving nutritional treatment for at least 6 months
• Hemodialysis group: Hemodialysis patients for more than 6 months

Exclusion Criteria:

• Patients pregnant
• Smokers
• Using antibiotics in the last 3 months
• Autoimmune diseases
• Clinical diagnosis of infectious diseases
• Clinical diagnosis of Cancer
• Clinical diagnosis of AIDS

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Supportive Care
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Intervention; Jaboticaba peel extract. Patients will ingest 4 capsules/day of jaboticaba (Plinia Cauliflora) peel extract, providing 3.3g of jabuticaba peel extract daily, containing 600mg of phenolic compounds, for one month.	Dietary supplement: Jaboticaba Peel Extract; Jaboticaba peel extract. Patients will ingest 4 capsules/day of jaboticaba (Plinia Cauliflora) peel extract, providing 3.3g of jabuticaba peel extract daily, containing 600mg of phenolic compounds, for one month.
Placebo Comparator: Placebo; Placebo. Patients will ingest 4 capsules/day of placebo (corn starch), providing 3.3g of placebo, for one month.	Other: Placebo; Placebo. Patients will ingest 4 capsules/day of placebo (corn starch), providing 3.3g of placebo, for one month.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Primary Outcome Measure	Antioxidant and anti-inflammatory biomarker Get blood samples to evaluate the supplementation effects in antioxidant and anti-inflammatory biomarker- nuclear receptor factor 2 (Nrf2)	4 weeks
Inflammatory biomarker	Get blood samples to evaluate the supplementation effects in inflammatory biomarker- factor nuclear kappa B (NFkB)	4 weeks
Microbiota Composition	Get fecal samples to evaluate the supplementation effects in microbiota composition.	4 weeks

Collaborators and Investigators

• Sponsor: Universidade Federal Fluminense
• Investigators: Principal Investigator: Denise Mafra, PhD, Universidade Federal Fluminense

Publications and helpful links

General Publications

• Lima MDC, do Nascimento HMA, da Silva JYP, de Brito Alves JL, de Souza EL. Evidence for the Beneficial Effects of Brazilian Native Fruits and Their By-Products on Human Intestinal Microbiota and Repercussions on Non-Communicable Chronic Diseases-A Review. Foods. 2023 Sep 19;12(18):3491. doi: 10.3390/foods12183491.

Study record dates

Study Major Dates

• Study Start (Estimated): July 1, 2026
• Primary Completion (Estimated): July 1, 2027
• Study Completion (Estimated): July 1, 2028

Study Registration Dates

• First Submitted: April 27, 2024
• First Submitted That Met QC Criteria: April 30, 2024
• First Posted (Actual): May 1, 2024

Study Record Updates

• Last Update Posted (Actual): May 15, 2026
• Last Update Submitted That Met QC Criteria: May 14, 2026
• Last Verified: May 1, 2026

More Information

Terms related to this study

• Keywords: inflammation; oxidative stress; chronic kidney diseases; jaboticaba; microbitoa
• Additional Relevant MeSH Terms: Urogenital Diseases; Pathologic Processes; Male Urogenital Diseases; Kidney Diseases; Urologic Diseases; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Chronic Disease; Disease Attributes; Renal Insufficiency; Pathological Conditions, Signs and Symptoms; Inflammation; Renal Insufficiency, Chronic
• Other Study ID Numbers: DeniseMafra20

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No