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Dietary calcium intake does not meet the nutritional requirements of children with chronic kidney disease and on dialysis.

ABSTRACT: BACKGROUND:Adequate calcium (Ca) intake is required for bone mineralization in children. We assessed Ca intake from diet and medications in children with CKD stages 4-5 and on dialysis (CKD4-5D) and age-matched controls, comparing with the UK Reference Nutrient Intake (RNI) and international recommendations. METHODS:Three-day prospective diet diaries were recorded in 23 children with CKD4-5, 23 with CKD5D, and 27 controls. Doses of phosphate (P) binders and Ca supplements were recorded. RESULTS:Median dietary Ca intake in CKD4-5D was 480 (interquartile range (IQR) 300-621) vs 724 (IQR 575-852) mg/day in controls (p?=?0.00002), providing 81% vs 108% RNI (p?=?0.002). Seventy-six percent of patients received ?200% RNI. Three children (6%) exceeded the National Kidney Foundation Kidney Disease Outcomes Quality Initiative (KDOQI) upper limit of 2500 mg/day. None with a total Ca intake ?2 × RNI was hypercalcemic. CONCLUSIONS:Seventy-six percent of children with CKD4-5D had a dietary Ca intake

SUBMITTER: McAlister L

PROVIDER: S-EPMC7501104 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Dietary calcium intake does not meet the nutritional requirements of children with chronic kidney disease and on dialysis.

McAlister Louise L Silva Selmy S Shaw Vanessa V Shroff Rukshana R

Pediatric nephrology (Berlin, Germany) 20200508 10

<h4>Background</h4>Adequate calcium (Ca) intake is required for bone mineralization in children. We assessed Ca intake from diet and medications in children with CKD stages 4-5 and on dialysis (CKD4-5D) and age-matched controls, comparing with the UK Reference Nutrient Intake (RNI) and international recommendations.<h4>Methods</h4>Three-day prospective diet diaries were recorded in 23 children with CKD4-5, 23 with CKD5D, and 27 controls. Doses of phosphate (P) binders and Ca supplements were rec ...[more]

PMID: 32385527

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Project description:Protein-energy wasting (PEW), characterized by a decline in body protein mass and energy reserves, including muscle and fat wasting and visceral protein pool contraction, is an underappreciated condition in early to moderate stages of chronic kidney disease (CKD) and a strong predictor of adverse outcomes. The prevalence of PEW in early to moderate CKD is ?20-25% and increases as CKD progresses, in part because of activation of proinflammatory cytokines combined with superimposed hypercatabolic states and declines in appetite. This anorexia leads to inadequate protein and energy intake, which may be reinforced by prescribed dietary restrictions and inadequate monitoring of the patient's nutritional status. Worsening uremia also renders CKD patients vulnerable to potentially deleterious effects of uncontrolled diets, including higher phosphorus and potassium burden. Uremic metabolites, some of which are anorexigenic and many of which are products of protein metabolism, can exert harmful effects, ranging from oxidative stress to endothelial dysfunction, nitric oxide disarrays, renal interstitial fibrosis, sarcopenia, and worsening proteinuria and kidney function. Given such complex pathways, nutritional interventions in CKD, when applied in concert with nonnutritional therapeutic approaches, encompass an array of strategies (such as dietary restrictions and supplementations) aimed at optimizing both patients' biochemical variables and their clinical outcomes. The applicability of many nutritional interventions and their effects on outcomes in patients with CKD with PEW has not been well studied. This article reviews the definitions and pathophysiology of PEW in patients with non-dialysis-dependent CKD, examines the current indications for various dietary modification strategies in patients with CKD (eg, manufactured protein-based supplements, amino acids and their keto acid or hydroxyacid analogues), discusses the rationale behind their potential use in patients with PEW, and highlights areas in need of further research.

Project description:BackgroundDietary intervention at the early stage of chronic kidney disease (CKD) is important for preventing progression to the end-stage renal disease (ESRD). However, few studies have investigated dietary intake of CKD patients in non-dialysis stage. Therefore, we investigated the dietary intake of Korean non-dialysis CKD patients and aimed to establish baseline data for the development of dietary education and intervention strategies for CKD patients.MethodsThree hundred fifty CKD patients who visited Seoul National University Hospital outpatient clinic from February 2016 to January 2017 were recruited for this cross-sectional study. Subjects on dialysis and those who had undergone kidney transplantation were excluded. Dietary intake, demographic information, and biochemical characteristics of 256 subjects who completed three-day dietary records were analyzed. Subjects were divided into four groups based on diabetes mellitus (DM) (DM-CKD and Non-DM-CKD groups) and kidney function (Early-CKD and Late-CKD groups).ResultsTotal energy intake was lower in the Late-CKD group compared with the Early-CKD group. In men, carbohydrate intake was higher and protein and fat intakes tended to be lower in the Late-CKD group compared with the Early-CKD group. In women, carbohydrate intake tended to be lower in the DM-CKD group than the Non-DM-CKD group. Protein intake tended to be higher in the DM-CKD groups. Phosphorus and sodium intakes were higher in the DM-CKD groups compared with the Non-DM-CKD groups in women, and tended to be higher in the DM-CKD groups in men.ConclusionDM and kidney function affected energy and nutrient intakes. Subjects in the Late-CKD group consumed less energy than those in the Early-CKD group. Non-DM subjects seemed to restrict protein intake starting from the Early-CKD stage than subjects with DM. Subjects in this study had low energy and high sodium intakes compared with recommended levels. Protein intake was lower in advanced CKD patients, but their intake level was still higher than the recommendation. Dietary intervention strategies for non-dialysis CKD patients need to be customized depending on the presence of DM and kidney function.

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Dietary calcium intake does not meet the nutritional requirements of children with chronic kidney disease and on dialysis.

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Dietary calcium intake does not meet the nutritional requirements of children with chronic kidney disease and on dialysis.

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