Dietary phosphate restriction in dialysis patients: A new approach for the treatment of hyperphosphataemia

被引:15
|
作者
Guida, B. [1 ]
Piccoli, A. [2 ]
Trio, R. [1 ]
Laccetti, R. [1 ]
Nastasi, A. [1 ]
Paglione, A. [1 ]
Memoli, A. [3 ]
Memoli, B. [3 ]
机构
[1] Univ Naples Federico II, Physiol Nutr Unit, Dept Neurosci, Naples, Italy
[2] Univ Padua, Dept Med & Surg Sci, I-35100 Padua, Italy
[3] Univ Naples Federico II, Div Nephrol, Naples, Italy
关键词
Dietary phosphate; Hyperphosphataemia; Dialysis; CHRONIC-RENAL-FAILURE; HEMODIALYSIS-PATIENTS; MAINTENANCE HEMODIALYSIS; MINERAL METABOLISM; PROTEIN INTAKE; PHOSPHORUS; DISEASE; CALCIUM; MANAGEMENT; MORTALITY;
D O I
10.1016/j.numecd.2010.02.021
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background and Aim: Elevated serum phosphate and calcium-phosphate levels play an important role in the pathogenesis of vascular calcifications in uraemic patients and appear to be associated with increased cardiovascular mortality. We aimed to evaluate the effects of a partial replacement of food protein with a low-phosphorus and low-potassium whey protein concentrate on phosphate levels of dialysis patients with hyperphosphataemia. Methods and Results: Twenty-seven patients undergoing chronic haemodialysis were studied for a 3-month period. In the intervention group (n = 15), food protein were replaced by 30 or 40 g of low-phosphorus and low-potassium protein concentrate aimed at limiting the phosphate intake. In the control group (n = 12) no changes were made to their usual diet. Anthropometric measurements, biochemical markers and dietary interviews were registered at baseline and during the follow-up period. From baseline to the end of the study, in the intervention group, serum phosphate and circulating intact parathyroid hormone levels lessened significantly (8.3 +/- 1.2 mg/dL vs 5.7 +/- 1.4 mg/dL and 488 +/- 205 pg/ml vs 177 +/- 100 pg/ml respectively; p < 0.05) with decreasing of phosphate and potassium intake. No significant differences were found in the control group. No significant changes were observed in serum albumin, calcium, potassium, Kt/V, body weight and body composition in both the intervention and control groups. Conclusion: Dietary intake of phosphate mainly comes from protein sources, so dietary phosphorus restriction may lead to a protein/energy malnutrition in a dialysis patient. A phosphorus-controlled diet plan including a nutritional substitute resulted in serum phosphate and intact parathyroid hormone decrease without nutritional status modifications in dialysis patients. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:879 / 884
页数:6
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