University of Minnesota
The aim of the study is to look at the effects of dietary phosphorus on phosphorous and calcium whole-body balance and kinetics in moderate chronic kidney disease (CKD). N = 14 enrolled subjects will be randomly assigned to a cross-over order of (A) Low P Diet, High P Diet. Each cross-over phase will be 19 days and consist of a 7-day outpatient, controlled diet period, followed by a 5- day inpatient, controlled diet, balance, and kinetic study period, followed by a second 7-day outpatient, controlled diet period.
Chronic kidney disease (CKD) affects approximately 37 million (1 in 7) U.S. adults, most of whom experience mineral and bone disorders (CKD-MBD) that increase risk for cardiovascular events, bone fractures, and death. Dietary and pharmaceutical treatments for CKD-MBD have diverse effects on serum calcium and phosphorus levels, but their effects on the underlying physiological processes of calcium and phosphorus balance are largely unknown. This study aims to determine the effects of a low versus high phosphorus bioaccessibility diet on whole-body calcium and phosphorus balance and kinetics, in…
Inclusion Criteria: * Men or women, ages 30-75 years old, any race or ethnicity * Moderate CKD, defined by KDIGO as eGFR category 3b (30-44 mL/min) or 4 (16-29 mL/min) with albuminuria categories A1-A3 * Serum intact parathyroid hormone above assay normal limit * Female subjects must be postmenopausal (\>12 months since last menstrual period), surgically sterile, or confirmed not pregnant by pregnancy test * Must be on stable doses of medications (except those noted in exclusion criteria) for at least 4 weeks prior to the study * Willing to discontinue supplements (e.g., vitamin D, calcium, m…
Cross-over order of LP then HP diet. Each cross-over phase will be 19 days and consist of a 7-day outpatient, controlled diet period, followed by a 5-day inpatient, controlled diet, balance, and kinetic study period, followed by a second 7-day outpatient, controlled diet period.
Cross-over order of HP then LP diet. Each cross-over phase will be 19 days and consist of a 7-day outpatient, controlled diet period, followed by a 5-day inpatient, controlled diet, balance, and kinetic study period, followed by a second 7-day outpatient, controlled diet period.
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