Effect of Vinegar Consumption on 24-hour Urinary Risk Factors Associated With Stone Formation

January 5, 2016 updated by: Guohua Zeng, The First Affiliated Hospital of Guangzhou Medical University

The Effect of Vinegar Consumption on 24-hour Urinary Risk Factors Associated With Calcium Oxalate Urinary Stone Formation: a Randomised Controlled Trial

Purpose:

The aim of this present study is to investigate the effect of vinegar consumption on 24-hour urinary risk factors associated with calcium oxalate urinary stone formation and blood biochemical parameters.

Methods:

The investigators will recruit 50 healthy young student volunteers in this study. By simple random sampling technique, volunteers will be allocated to two groups (group 1, control group; group 2, vinegar group).Each participant in vinegar group drink 15ml vinegar ( Ninghuafu, Sanxi, China) at noon and evening respectively for a period of four weeks.The end point of this study is comparison the outcomes of 24-hour urine and blood biochemical parameters between different group and point-in-time.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Purpose:

The written history of vinegar use in China was more than 5,000 years,and it was used as health care products since ancient times. In addition of the main component of acetic acid, it also contains other acids, esters, polyphenols and other active substances.Previous studies have reported some effects of vinegar, such as delays gastric emptying,relieves fatigue, regulates blood glucose and lipid metabolism, antioxidant, reduces blood pressure and so on. The China national epidemiological study of urolithiasis which was conducted from May 2013 through July 2014 indicated that vinegar may be protective against the formation of urolithiasis (has not been published). Animal experiments showed that vinegar could inhibit oxalate calcium crystal formation in rat kidneys (has not been published). Consequently, we performed this randomized controlled trial to investigate the effect of vinegar consumption on 24-hour urinary risk factors associated with calcium oxalate urinary stone formation and blood biochemical parameters.

Methods:

Study design and participants: We will recruit 50 healthy young student volunteers in this study. The inclusion criteria are male who age 18-35 years, and those with normal renal function,without urolithiasis and congenital urinary tract abnormalities. The exclusion criteria include hematuria, urinary tract infection and have a history of kidney or urinary diversion. We exclude male older than 35 years because usually they have to work and not easy to collect 24-hour sample. The reason of excluding female is that the trail will last four weeks and women's menstrual cycle could affect 24-hour urine collection.

Randomisation:

Trained research clinicians enroll volunteers in a university nearby our hospital. Volunteers will be allocated in a 1:1 ratio to control group(group 1) or vinegar group(group 2) by simple random sampling technique, which is conducted by clinical trial office in urology department of our hospital in Guangzhou, China.

Procedures: Each participant in vinegar group drink 15ml vinegar ( Ninghuafu, Sanxi, China) after dinner at noon and evening respectively for a period of four weeks,and participants in control group do not need intervention.All of participants drink vinegar under the surveillance of research clinicians.

Data collection:

Baseline data will be collected before randomization in our hospital. The baseline data protocol includes urinary ultrasonography, spot urine examines, 24-hour urine analysis and blood chemical examines. The parameters of 24-hour urine analysis include Ph, volume, creatinine, oxalate, citrate, phosphate, uric acid, calcium, magnesium, sodium and chloride. The standard blood analysis protocol included routine haematology, fasting serum glucose, creatinine, urea, uric acid, high-density lipoprotein, low-density lipoprotein, triglycerides, alanine transaminase(ALT), total protein(TP), albumin, glutamyltransferase (GGT) , serum total bile acid, cholesterol, sodium, potassium, calcium and chloride ions. Another tube of blood samples are freeze in -80 degree refrigerator for further analysis of oxidation of blood protein product(AOPP), malondialdehyde(MDA), glutathion peroxidase(GSH-PX), superoxide dismutase(SOD) and catalase activity(CAT).

Follow-up data include 24-hour urine analysis on the 7th, 14th, 21th and 28th day during this period and blood biochemical examines on the 29th day. The protocol of 24-hour urine and blood chemical examines is the same with baseline data. And participants will be asked to make a record of meals for seven days.The ANOVA for repeated measures is used to perform the data analysis.

Study Type

Interventional

Enrollment (Anticipated)

50

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Guangdong
      • Guangzhou, Guangdong, China, 510230
        • Recruiting
        • Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

16 years to 33 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Normal renal function.
  • Those without urolithiasis
  • Those without congenital urinary tract abnormalities.

Exclusion Criteria:

  • Those with hematuria
  • Those with urinary tract infection
  • Those have a history of kidney or urinary diversion.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
No Intervention: Group 1
Group1 is control group and participants do not need intervention.
Experimental: Group 2
Group 2 is vinegar Group and participants in this group are asked to drink 15ml vinegar(Ninghuafu, Sanxi, China)after dinner at noon and evening respectively for a period of four weeks.
Dietary supplement: Vinegar group
Each participant in vinegar group drink 15ml vinegar(Ninghuafu,Sanxi,China)after dinner at noon and evening respectively for a period of four weeks.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change of 24-hour urinary risk factors associated with calcium oxalate urinary stone formation
Time Frame: One day before drinking vinegar(the 0th day)and on the 7th,14th,21th and 28th day after drinking vinegar.
To compare the change of 24-hour urinary risk factors associated with calcium oxalate urinary stone formation which include Ph, volume, creatinine, oxalate, citrate, phosphate, uric acid, calcium, magnesium, sodium and chloride of 24-hour urine between two groups on the 7th,14th,21th and 28th day after drinking vinegar.
One day before drinking vinegar(the 0th day)and on the 7th,14th,21th and 28th day after drinking vinegar.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change of blood biochemical parameters
Time Frame: One day before drinking vinegar(the 0th day)and on the 29th day after drinking vinegar.
To compare the change of blood biochemical parameters which include fasting serum glucose, creatinine, urea, uric acid, high-density lipoprotein, low-density lipoprotein, triglycerides,serum total bile acid, cholesterol, sodium, potassium, calcium and chloride ions before grouping and on the 28th day after drinking vinegar.
One day before drinking vinegar(the 0th day)and on the 29th day after drinking vinegar.

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change of blood oxidative stress markers
Time Frame: One day before drinking vinegar(the 0th day) and on the 29th day after drinking vinegar.
To compare the change of blood oxidative stress markers which include blood protein product(AOPP),MDA,glutathion peroxidase(GSH-PX),superoxide dismutase(SOD) and catalase activity(CAT) before grouping and on the 28th day after drinking vinegar.
One day before drinking vinegar(the 0th day) and on the 29th day after drinking vinegar.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

The First Affiliated Hospital of Guangzhou Medical University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 1, 2015

Primary Completion (Anticipated)

March 1, 2016

Study Completion (Anticipated)

March 1, 2016

Study Registration Dates

First Submitted

December 31, 2015

First Submitted That Met QC Criteria

January 5, 2016

First Posted (Estimate)

January 7, 2016

Study Record Updates

Last Update Posted (Estimate)

January 7, 2016

Last Update Submitted That Met QC Criteria

January 5, 2016

Last Verified

December 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MRER(52)2015

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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