Analysis of Urine Composition Saturation and Dietary Intervention in Subjects Without Urinary Calculi

Sponsor

Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University (Other)

Overall Status

Active, not recruiting

CT.gov ID

NCT05102279

Collaborator

(none)

Enrollment

Location

Arms

3.2

Anticipated Duration (Months)

3.1

Patients Per Site Per Month

Study Details

Study Description

Brief 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. 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.

Condition or Disease	Intervention/Treatment	Phase
Calculi, Urinary Dietary Supplements Urine Specimen Collection	Dietary Supplement: Giving subjects different phosphorus diets at different stages of the trial	N/A

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

Study Type:

Interventional

Actual Enrollment :

10 participants

Allocation:

Randomized

Intervention Model:

Crossover Assignment

Intervention 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.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 (Participant)

Primary Purpose:

Prevention

Official Title:

Analysis of Urine Composition Saturation and Dietary Intervention in Subjects Without Urinary Calculi

Actual Study Start Date :

Dec 23, 2021

Anticipated Primary Completion Date :

Mar 31, 2022

Anticipated Study Completion Date :

Mar 31, 2022

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Early administration of high-phosphorus diet test group 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	Dietary Supplement: Giving subjects different phosphorus diets at different stages of the trial 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
Active Comparator: Early administration of low-phosphorus diet test group 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	Dietary Supplement: Giving subjects different phosphorus diets at different stages of the trial 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

Arm

Intervention/Treatment

Experimental: Early administration of high-phosphorus diet test group

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

Dietary Supplement: Giving subjects different phosphorus diets at different stages of the trial

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

Active Comparator: Early administration of low-phosphorus diet test group

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

Dietary Supplement: Giving subjects different phosphorus diets at different stages of the trial

Outcome Measures

Primary Outcome Measures

Subjects complete the trial within 10 days [10 days]
Subjects ate all the food during the trial period and collected all specimens

Eligibility Criteria

Criteria

Ages Eligible for Study:

20 Years to 45 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

Age: 20-45 years old
1. 5≤Body Mass Index≤ 23. 9
Normal oral diet

Exclusion Criteria:

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