Estimate of dietary phosphorus intake using 24-h urine collection

Morimoto, Yuuka; Sakuma, Masae; Ohta, Hiroyuki; Suzuki, Akitsu; Matsushita, Asami; Umeda, Minako; Ishikawa, Makoto; Taketani, Yutaka; Takeda, Eiji; Arai, Hidekazu

doi:10.3164/jcbn.14-15

Cited by 30 publications

(32 citation statements)

References 24 publications

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“…In addition, we dichotomized problems in following the HD diet into ‘not at all a problem’ (1) and ‘a problem’ (2–5), and other cutoffs may have generated different findings. Further, dietary analyses contain substantial random measurement error (risk of α-errors), particularly for sodium and phosphorus 16–17 , and the 24-hour recall method used may have systematic recall bias that could lead to α- and/or β-errors. While nutritional biomarkers can complement dietary assessment in most populations (e.g., urinary sodium and phosphorus, serum albumin), these indices are unavailable and/or greatly confounded in HD patients 18 .…”

Section: Discussionmentioning

confidence: 99%

Exploring Problems in Following the Hemodialysis Diet and Their Relation to Energy and Nutrient Intakes: The BalanceWise Study

St-Jules

Woolf

Pompeii

et al. 2016

Journal of Renal Nutrition

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Objective To identify the problems experienced by hemodialysis (HD) patients in attempting to follow the HD diet, and their relation to energy and nutrient intakes. Design Cross-sectional analysis of baseline data from the BalanceWise Study. Setting Community-dwelling adults recruited from outpatient HD centers. Subjects After excluding participants with incomplete dietary analyses (n = 50), 140 community-dwelling African American and white (40/60%) men and women (52/48%) on chronic intermittent HD for at least three months (median three years) were included. Intervention Participant responses, on a 5-point Likert scale ranging from “not at all a problem” to “a very important problem for me”, to 34 questions pertaining to potential barriers to following the HD diet in the previous two months were classified as either a problem (1) or not a problem (2–5). Main Outcome Measure Energy and nutrient intakes determined using the Nutrition Data System for Research® based on three, non-consecutive, unscheduled, two-pass 24-hour dietary recalls collected on one dialysis and one non-dialysis weekday, and one non-dialysis weekend day. Results More than half of participants reported having problems related to specific behavioral factors (e.g., feeling deprived), technical difficulties (e.g., tracking nutrients) and physical condition (e.g., appetite), but issues of time and food preparation, and behavioral factors tended to be most deterministic of reported dietary intakes. Longer duration of HD was associated with lower intakes of protein, potassium, and phosphorus (p <0.05). Conclusion Registered dietitian nutritionists should consider issues of time and food preparation, and behavioral factors in their nutrition assessment of HD patients, and should continually monitor HD patients for changes in protein intake that may occur over time.

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Section: Discussionmentioning

confidence: 99%

Exploring Problems in Following the Hemodialysis Diet and Their Relation to Energy and Nutrient Intakes: The BalanceWise Study

St-Jules

Woolf

Pompeii

et al. 2016

Journal of Renal Nutrition

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“…(10) However, in our previous study, the accuracy of the estimation of phosphorus intake was unknown because it had not compared the actual phosphorus intake. To improve the accuracy of estimating dietary phosphorus intake, further studies are required on the 24-h urine collection method.…”

Section: Introductionmentioning

confidence: 98%

Availability of 24-h urine collection method on dietary phosphorus intake estimation

Sakuma

Morimoto

Suzuki

et al. 2017

J. Clin. Biochem. Nutr.

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Accurate assessment of dietary phosphorus intake is necessary to prevent hyperphosphatemia. The aim of this study was to evaluate the 24-h urine collection method for estimation of phosphate intake in healthy males. Two experiments, a 1-day and a 5-day loading test, were performed. After an overnight fast, subjects consumed test meals, 24-h urine collection was performed, and blood samples were obtained. In the 5-day loading test, a phosphorus supplement was orally administered on day 3. The association between the phosphorus content of test meals and urinary excretion, anthropometric indices, and blood biomarkers was analyzed to develop a more precise formula for estimating phosphorus intake. In the 1-day loading test, the standard deviation of predictive phosphorus intake, based on multiple linear regression analysis, was less than that for the phosphorus absorption rate. In the 5-day loading test, urinary phosphorus excretion was similar on days 2, 4 and 5, but was significantly higher on day 3 after phosphorus supplementation. Our results indicate that estimation of dietary phosphorus intake with the 24-h urine collection method, using the amount of phosphorus and urea nitrogen excretion, may increase the precision of short-term monitoring.

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“…Weighed dietary records often over-or underestimate phosphorus intake because it does not add phosphorus derived from food additive, fluctuations in phosphorus content due to cooking loss and production region and picking seasons are not considered. We reported that the 24hour urine collection method can estimate the amount of dietary phosphorus intake, and were superior to estimation by weighed dietary record (17). So, we calculated the daily dietary intake, estimated from the urine collection (UC), of phosphorus (UC-P).…”

Section: -Hour Urine Collection Methodsmentioning

confidence: 99%

“…This study was implemented according to a previously published method (17). Subjects performed 24-hour urine collection and weighed dietary records.…”

Section: Protocolmentioning

confidence: 99%

Effects of gender and body weight on fibroblast growth factor 23 responsiveness to estimated dietary phosphorus

et al. 2016

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Fibroblast growth factor 23 (FGF23) is a molecule involved in regulating phosphorus homeostasis. Although some studies indicated an association between serum FGF23 levels and sex, the association has not been fully investigated. The purpose of this study was to evaluate whether sex could influence FGF23 responsiveness to dietary phosphorus intake in healthy individuals. Thirty two healthy subjects between 21 and 28 years were recruited for this study. Subjects performed 24-hour urine collection and blood samples were collected. We estimated phosphorus intake (UC-P) from the urine collection (UC), and evaluated any association between UC-P and serum FGF23 levels. Subsequently, we compared serum FGF23 levels between males and females. Positive correlation was observed between UC-P and serum FGF23 levels. Serum FGF23 levels were significantly higher in males than in females. Serum FGF23 levels/UC-P was significantly higher in females than in males. There was no significant difference in serum FGF23 levels/UC-P/BW between the male and female groups. Our results indicate that there was no gender difference between FGF23 responsiveness to phosphorus intake per body weight.

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Estimate of dietary phosphorus intake using 24-h urine collection

Cited by 30 publications

References 24 publications

Exploring Problems in Following the Hemodialysis Diet and Their Relation to Energy and Nutrient Intakes: The BalanceWise Study

Exploring Problems in Following the Hemodialysis Diet and Their Relation to Energy and Nutrient Intakes: The BalanceWise Study

Availability of 24-h urine collection method on dietary phosphorus intake estimation

Effects of gender and body weight on fibroblast growth factor 23 responsiveness to estimated dietary phosphorus

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