Calculi, UrinaryNCT05102279
Analysis of Urine Composition Saturation and Dietary Intervention in Subjects Without Urinary Calculi
A study testing Giving subjects different phosphorus diets at different stages of the trial in people with Calculi, Urinary and Dietary Supplements, run by Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University at 1 site in China.
Trial summary
Urinary calculi have become a global public health problem, which brings a huge economic burden to society and individuals. The pathogenesis of urinary calculi is not completely clear. Supersaturation of urinary components is a necessary condition for the formation of urinary calculi. Read more about this study
- Who is it for?
- Ages 20 to 45 yearsHealthy volunteers can take part
- Conditions the study is for
- Calculi, Urinary, Dietary Supplements, Urine Specimen Collection
- What is being tested?
- Giving subjects different phosphorus diets at different stages of the trial
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 10 participants
- Where
- 1 siteChina
- Study dates
- 23 Dec 2021to 30 Dec 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 to 45 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Age: 20-45 years old
- 18. 5≤Body Mass Index≤ 23. 9
- Normal oral diet
Who cannot join
- People who have had or are suffering from urinary tract stones , or have the following diseases leading to the formation of stones: renal tubular acidosis, gout, hyperuricemia, chronic diarrhea, insulin resistance, hyperparathyroidism, idiopathic hypercalcemia, hypertension, diabetes mellitus
- CKD-EPI-eGFR<90ml/min1.73m-2)
- The following drugs are being used: cathartic, aspirin, angiotensin converting enzyme inhibitor，angiotensin II receptor antagonist，diuretic, acid inhibitor, alkali or carbonic anhydrase inhibitor, phosphorus binder, calcium agent and active vitamin D;
- Previous gastrointestinal diseases or gastrointestinal surgery
- Application of enteral and parenteral nutrition
- Complicated with infection, with or without antibiotic treatment
- Mental patients or unable to cooperate for various reasons
Trial locations and contacts
1 site in 1 country.
China1 site
Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University
Shanghai, Shanghai Municipality, 200001
About this study
Urinary calculi have become a global public health problem, which brings a huge economic burden to society and individuals. The pathogenesis of urinary calculi is not completely clear. Supersaturation of urinary components is a necessary condition for the formation of urinary calculi. The causes of stone formation are closely related to diet, drugs, metabolic disorders, basic diseases, genetic factors, environment and so on. Diet essentially determines the composition of urine, which affects the formation of urinary calculi. The effect of dietary phosphorus intake on stones is not clear. There is a lack of data to support dietary phosphorus as an influencing factor of stone formation. Phosphorus is present in most foods. 24h urine composition analysis is of great value in predicting the occurrence and composition of urinary calculi. However, due to the interaction between urine components, a single urine component can not well predict the occurrence of stones. Therefore, the researchers introduced the relative supersaturation of common stone components in urine to predict the incidence of stones. Therefore, we want to give healthy adults a diet with different phosphorus content for a period of time to clarify the effect of phosphorus in the diet on 24h urine composition level and urine relative supersaturation, so as to further explore the relationship between dietary phosphorus and the incidence of urinary calculi. To provide more clear recommendations for early prevention of urinary calculi, and provide more evidence for clinical decision-making, thereby reducing the incidence rate of urinary calculi.
Read the detailed description
*Diet: Ordinary phosphorus diet: phosphorus content 1500mg High-phosphorus diet: Phosphorus content is 2500mg (inorganic phosphorus is added to the ordinary phosphorus diet) Low-phosphorus diet: Phosphorus content 500mg (The protein content and the ratio of plant protein and animal protein are consistent with the other two diets by adding egg protein and adding low-phosphorus whey protein powder. In addition, calcium magnesium tablets and potassium chloride salt are added to achieve the same calcium, magnesium and potassium content as others. The two diets are consistent)
There are 2 recipes for each diet, and each recipe guarantees that the energy, protein, fat, carbohydrate, calcium, magnesium, sodium, potassium, oxalic acid content, vegetable protein and animal protein ratio are basically the same:
Energy: 2100kcal (30kcal/kg, standard weight 70kg);Protein: 110g;Fat: 55-60g;Carbohydrate: 300g;Calcium: 600-700mg;Magnesium: 350-400mg;Sodium: 4600mg;Potassium: 2500mg Water:Giving subjects 2L of purified water without any minerals every day
- Specimen We will collect 24h urine and feces for the whole day on the 2nd, 5th, 7th, and 10th days of the experiment, and collected morning blood and random urine on the 3rd, 6th, 8th, and 11th days.
- Analysis We will use Equil 2 software to calculate the relative supersaturation of urine, and use SPSS software to analysis data
- Being tested
- Giving subjects different phosphorus diets at different stages of the trial
- Keywords
- Dietary Supplements, Urine Saturation factor, Calculi, Urinary
- Medical subject headings
- Urinary Calculi
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Giving subjects different phosphorus diets at different stages of the trialDietary supplement
Ordinary phosphorus diet: Phosphorus content 1500mg High phosphorus diet: Phosphorus content 2500mg (inorganic phosphorus is added to the ordinary phosphorus diet) Low phosphorus diet: Phosphorus content 500mg (Protein content is achieved through chicken albumen and addition of low-phosphorus whey protein powder) The ratio of plant protein and animal protein is the same as the other two diets. In addition, calcium-magnesium tablets and potassium chloride salt are added to achieve the same calcium, magnesium and potassium content as the other two diets.) There are 2 recipes for each diet. Ensure that the energy, protein, fat, carbohydrate, calcium, magnesium, sodium, potassium, oxalic acid content, vegetable protein and animal protein ratio are basically the same: Energy: 2100kcal (30kcal/kg, standard body weight 70kg) Protein: 110g Fat: 55-60g Carbohydrate: 300g Calcium: 600-700mg Magnesium: 350-400mg Sodium: 4600mg Potassium: 2500mg
| Study group | Role | What they receive |
|---|---|---|
| Early administration of high-phosphorus diet test group | Experimental | Group A: 1500 mg phosphorus diet was given on day 1-2, 2500 mg phosphorus diet on day 3-5, 1500 mg phosphorus diet on day 6-7 and 500 mg phosphorus diet on day 8-10 Receives: Dietary Supplement: Giving subjects different phosphorus diets at different stages of the trial |
| Early administration of low-phosphorus diet test group | Active comparator | Group B: 1500 mg phosphorus diet was given on day 1-2, 500 mg phosphorus diet on day 3-5, 1500 mg phosphorus diet on day 6-7 and 3500 mg phosphorus diet on day 8-10 Receives: Dietary Supplement: Giving subjects different phosphorus diets at different stages of the trial |
What is being measured
The primary outcome is the main question the study is designed to answer.
Subjects complete the trial within 10 days
Subjects ate all the food during the trial period and collected all specimens
Measured: 10 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Nov 2021
- Study start23 Dec 2021
- Primary completion31 Jul 2024 (estimated)
- Study completion30 Dec 2024 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for Calculi, UrinaryStudies of the same condition, open and under way.
- More trials run by Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Model description
- Participants were randomly divided into two groups.A group of participants first received a normal phosphorus diet for 2 days, followed by a low-phosphorus diet for 3 days, then a normal phosphorus diet for 2 days, and a high-phosphorus diet for 3 days.The other group of participants first received a normal phosphorus diet for 2 days, followed by a high phosphorus diet for 3 days, then a normal phosphorus diet for 2 days, and a low phosphorus diet for 3 days.
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 10 participants (actual)
Sponsor and investigators
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ding Feng, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University
- Investigators
- Feng Ding, PhD, Study director, Division of Nephrology,Shanghai Ninth People's Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05102279
- Sponsor's protocol ID
- UUC-2021-10
- Status last verified
- Jan 2024
- First submitted
- 20 Oct 2021
- Last updated
- 1 Feb 2024
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Scales CD Jr, Smith AC, Hanley JM, Saigal CS; Urologic Diseases in America Project. Prevalence of kidney stones in the United States. Eur Urol. 2012 Jul;62(1):160-5. doi: 10.1016/j.eururo.2012.03.052. Epub 2012 Mar 31.
PubMed 22498635Shadman A, Bastani B. Kidney Calculi: Pathophysiology and as a Systemic Disorder. Iran J Kidney Dis. 2017 May;11(3):180-191.
PubMed 28575878Prezioso D, Strazzullo P, Lotti T, Bianchi G, Borghi L, Caione P, Carini M, Caudarella R, Ferraro M, Gambaro G, Gelosa M, Guttilla A, Illiano E, Martino M, Meschi T, Messa P, Miano R, Napodano G, Nouvenne A, Rendina D, Rocco F, Rosa M, Sanseverino R, Salerno A, Spatafora S, Tasca A, Ticinesi A, Travaglini F, Trinchieri A, Vespasiani G, Zattoni F; CLU Working Group. Dietary treatment of urinary risk factors for renal stone formation. A review of CLU Working Group. Arch Ital Urol Androl. 2015 Jul 7;87(2):105-20. doi: 10.4081/aiua.2015.2.105.
PubMed 26150027Peacock M. Phosphate Metabolism in Health and Disease. Calcif Tissue Int. 2021 Jan;108(1):3-15. doi: 10.1007/s00223-020-00686-3. Epub 2020 Apr 7.
PubMed 32266417
Study at a glance
From the registry record, last updated by the sponsor on 1 Feb 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Analysis of Urine Composition Saturation and Dietary Intervention in Subjects Without Urinary Calculi
- ClinicalTrials.gov ID
- NCT05102279
- Acronym / sponsor ID
- UUC-2021-10
- Keywords
- Dietary Supplements, Urine Saturation factor, Calculi, Urinary
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 10 participants (actual)
- Lead sponsor
- Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong UniversityUniversity, hospital or other
- Study start
- 23 Dec 2021 (actual)
- Primary completion
- 31 Jul 2024 (estimated)
- Study completion
- 30 Dec 2024 (estimated)
- First posted
- 1 Nov 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Urinary calculi have become a global public health problem, which brings a huge economic burden to society and individuals. The pathogenesis of urinary calculi is not completely clear. Supersaturation of urinary components is a necessary condition for the formation of urinary calculi. The causes of stone formation are closely related to diet, drugs, metabolic disorders, basic diseases, genetic factors, environment and so on. Diet essentially determines the composition of urine, which affects the formation of urinary calculi. The effect of dietary phosphorus intake on stones is not clear. There is a lack of data to support dietary phosphorus as an influencing factor of stone formation. Phosphorus is present in most foods. 24h urine composition analysis is of great value in predicting the occurrence and composition of urinary calculi. However, due to the interaction between urine components, a single urine component can not well predict the occurrence of stones. Therefore, the researchers introduced the relative supersaturation of common stone components in urine to predict the incidence of stones. Therefore, we want to give healthy adults a diet with different phosphorus content for a period of time to clarify the effect of phosphorus in the diet on 24h urine composition level and urine relative supersaturation, so as to further explore the relationship between dietary phosphorus and the incidence of urinary calculi. To provide more clear recommendations for early prevention of urinary calculi, and provide more evidence for clinical decision-making, thereby reducing the incidence rate of urinary calculi.
Detailed description
*Diet: Ordinary phosphorus diet: phosphorus content 1500mg High-phosphorus diet: Phosphorus content is 2500mg (inorganic phosphorus is added to the ordinary phosphorus diet) Low-phosphorus diet: Phosphorus content 500mg (The protein content and the ratio of plant protein and animal protein are consistent with the other two diets by adding egg protein and adding low-phosphorus whey protein powder. In addition, calcium magnesium tablets and potassium chloride salt are added to achieve the same calcium, magnesium and potassium content as others. The two diets are consistent)
There are 2 recipes for each diet, and each recipe guarantees that the energy, protein, fat, carbohydrate, calcium, magnesium, sodium, potassium, oxalic acid content, vegetable protein and animal protein ratio are basically the same:
Energy: 2100kcal (30kcal/kg, standard weight 70kg);Protein: 110g;Fat: 55-60g;Carbohydrate: 300g;Calcium: 600-700mg;Magnesium: 350-400mg;Sodium: 4600mg;Potassium: 2500mg Water:Giving subjects 2L of purified water without any minerals every day
- Specimen We will collect 24h urine and feces for the whole day on the 2nd, 5th, 7th, and 10th days of the experiment, and collected morning blood and random urine on the 3rd, 6th, 8th, and 11th days.
- Analysis We will use Equil 2 software to calculate the relative supersaturation of urine, and use SPSS software to analysis data
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (participant)
- Number of arms
- 2
- Model description
- Participants were randomly divided into two groups.A group of participants first received a normal phosphorus diet for 2 days, followed by a low-phosphorus diet for 3 days, then a normal phosphorus diet for 2 days, and a high-phosphorus diet for 3 days.The other group of participants first received a normal phosphorus diet for 2 days, followed by a high phosphorus diet for 3 days, then a normal phosphorus diet for 2 days, and a low phosphorus diet for 3 days.
| Arm | Type | Receives |
|---|---|---|
| Early administration of high-phosphorus diet test group | Experimental | Dietary Supplement: Giving subjects different phosphorus diets at different stages of the trialGroup A: 1500 mg phosphorus diet was given on day 1-2, 2500 mg phosphorus diet on day 3-5, 1500 mg phosphorus diet on day 6-7 and 500 mg phosphorus diet on day 8-10 |
| Early administration of low-phosphorus diet test group | Active comparator | Dietary Supplement: Giving subjects different phosphorus diets at different stages of the trialGroup B: 1500 mg phosphorus diet was given on day 1-2, 500 mg phosphorus diet on day 3-5, 1500 mg phosphorus diet on day 6-7 and 3500 mg phosphorus diet on day 8-10 |
Who may qualify
- Ages
- 20 to 45 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- Age: 20-45 years old
- 18. 5≤Body Mass Index≤ 23. 9
- Normal oral diet
Key exclusion criteria (7 listed)
- People who have had or are suffering from urinary tract stones , or have the following diseases leading to the formation of stones: renal tubular acidosis, gout, hyperuricemia, chronic diarrhea, insulin resistance, hyperparathyroidism, idiopathic hypercalcemia, hypertension, diabetes mellitus
- CKD-EPI-eGFR<90ml/min1.73m-2)
- The following drugs are being used: cathartic, aspirin, angiotensin converting enzyme inhibitor，angiotensin II receptor antagonist，diuretic, acid inhibitor, alkali or carbonic anhydrase inhibitor, phosphorus binder, calcium agent and active vitamin D;
- Previous gastrointestinal diseases or gastrointestinal surgery
- Application of enteral and parenteral nutrition
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Giving subjects different phosphorus diets at different stages of the trialOrdinary phosphorus diet: Phosphorus content 1500mg High phosphorus diet: Phosphorus content 2500mg (inorganic phosphorus is added to the ordinary phosphorus diet) Low phosphorus diet: Phosphorus content 500mg (Protein content is achieved through chicken albumen and addition of low-phosphorus whey protein powder) The ratio of plant protein and animal protein is the same as the other two diets. In addition, calcium-magnesium tablets and potassium chloride salt are added to achieve the same calcium, magnesium and potassium content as the other two diets.) There are 2 recipes for each diet. Ensure that the energy, protein, fat, carbohydrate, calcium, magnesium, sodium, potassium, oxalic acid content, vegetable protein and animal protein ratio are basically the same: Energy: 2100kcal (30kcal/kg, standard body weight 70kg) Protein: 110g Fat: 55-60g Carbohydrate: 300g Calcium: 600-700mg Magnesium: 350-400mg Sodium: 4600mg Potassium: 2500mg | Dietary supplement | Early administration of high-phosphorus diet test group, Early administration of low-phosphorus diet test group |
Primary outcome
Subjects complete the trial within 10 days
Time frame: 10 days
Subjects ate all the food during the trial period and collected all specimens
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Feb 2024.
- Background: PubMed 22498635Scales CD Jr, Smith AC, Hanley JM, Saigal CS; Urologic Diseases in America Project. Prevalence of kidney stones in the United States. Eur Urol. 2012 Jul;62(1):160-5. doi: 10.1016/j.eururo.2012.03.052. Epub 2012 Mar 31.
- Background: PubMed 28575878Shadman A, Bastani B. Kidney Calculi: Pathophysiology and as a Systemic Disorder. Iran J Kidney Dis. 2017 May;11(3):180-191.
- Background: PubMed 26150027Prezioso D, Strazzullo P, Lotti T, Bianchi G, Borghi L, Caione P, Carini M, Caudarella R, Ferraro M, Gambaro G, Gelosa M, Guttilla A, Illiano E, Martino M, Meschi T, Messa P, Miano R, Napodano G, Nouvenne A, Rendina D, Rocco F, Rosa M, Sanseverino R, Salerno A, Spatafora S, Tasca A, Ticinesi A, Travaglini F, Trinchieri A, Vespasiani G, Zattoni F; CLU Working Group. Dietary treatment of urinary risk factors for renal stone formation. A review of CLU Working Group. Arch Ital Urol Androl. 2015 Jul 7;87(2):105-20. doi: 10.4081/aiua.2015.2.105.
- Background: PubMed 32266417Peacock M. Phosphate Metabolism in Health and Disease. Calcif Tissue Int. 2021 Jan;108(1):3-15. doi: 10.1007/s00223-020-00686-3. Epub 2020 Apr 7.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Feng Ding, PhD study director
Division of Nephrology,Shanghai Ninth People's Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Giving subjects different phosphorus diets at different stages of the trial in people with Calculi, Urinary and Dietary Supplements, run by Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 1 Feb 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Subjects complete the trial within 10 days (time frame: 10 days). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05102279, which also lists 4 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Feb 2024.