Efficacy of calcium carbonate and low-dose vitamin D/1,25(OH)2D3 in reducing the risk of developing renal osteodystrophy in children on continuous ambulatory peritoneal dialysis

1990 ◽  
Vol 4 (6) ◽  
pp. 614-617 ◽  
Author(s):  
Harald J�ppner ◽  
Peter Friedrich Hoyer ◽  
Kai Latta ◽  
Lothar Winkler ◽  
Gisela Offner ◽  
...  
1985 ◽  
Vol 5 (1) ◽  
pp. 53-55 ◽  
Author(s):  
Carmelo Loschiavo ◽  
Antonia Fabris ◽  
Silvano Adami ◽  
Luciana Tomelleri ◽  
Nicola Tessitore ◽  
...  

The authors performed a metabolic and morphologic investigation of calcium metabolism in 22 patients on continuous ambulatory peritoneal dialysis (CAPD), selected as the first procedure. The patients were kept on a diet containing about 30 Kcal/ kg, 1 g/kg of protein, 950 mg of phosphate and 1500 mg of calcium per day. They showed normal mean values of serum calcium, phosphate, alkaline phosphatase, total protein and albumin at the start and after six, 12 and 21 months of CAPD. Serum PTH levels showed a progressive decrease over 21 months. Serum 25-OH-D3 were low at start and showed a further decrease after 12 months of CAPD. Before and during CAPD, serum 1,25 (OH)2D3 levels were undetectable. The bone mineral content was within normal range at start and showed a slight decrease after 12 months of CAPD. In 64% of the patients, bone biopsies, obtained from the iliac crest at the start showed osteomalacia, either isolated or associated with hyperparathyroidism. After 12 months, osteomalacia was still evident in 71% of this group. The authors concluded that dietary restriction of phosphate is important in preventing secondary hyperparathyroidism in patients on CAPD. However, prevalence of osteomalacia is due to defective vitamin D metabolism and its management requires administration of vitamin D metabolites. In its morphological aspects and clinical features, renal osteodystrophy (RO) may differ significantly between patients on CAPD and those on hemodialysis (1–3). In addition, workers have reported conflicting opinions concerning the incidence and severity of bone lesions in CAPD patients (4–6). We undertook this investigation in order to evaluate the evolution and clinical, biochemical and morphologic aspects of RO in 22 ESRD patients treated with CAPD after long-term restriction of dietary protein and phosphate.


Nephron ◽  
1988 ◽  
Vol 48 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Jayson Rapoport ◽  
Shraga Shany ◽  
Cidio Chaimovitz

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Naowanit Nata ◽  
Jessada Kanchanasinitth ◽  
Pamila Tasanavipas ◽  
Ouppatham Supasyndh ◽  
Bancha Satirapoj

Background. Vitamin D deficiency is a common problem among patients on continuous ambulatory peritoneal dialysis (CAPD). Vitamin D supplementation leads to reduced serum parathyroid hormone levels and improved cardiovascular markers. Different doses and time intervals of oral vitamin D supplementation may differ in each patient on dialysis. The study aimed to evaluate the efficacy of weekly split and single dose of ergocalciferol at 60,000 IU on serum 25-hydroxyvitamin D (25(OH)D) among patients on CAPD. Methods. A randomized study was conducted among patients on CAPD with vitamin D deficiency or insufficiency (25(OH)D < 30 ng/mL). Patients were randomly assigned to two groups: the split dose group was given ergocalciferol 20,000 IU three times weekly and the single dose group was given ergocalciferol 60,000 IU once weekly for 8 weeks. Main outcomes measured serum 25(OH)D concentrations, serum calcium, serum phosphate, and intact parathyroid levels at 8 weeks after being enrolled. Results. Of 128 screened patients, 50 met the criteria for eligibility and were randomized. At 8 weeks after treatment, mean serum 25(OH)D concentrations significantly increased from baseline 22.7 ± 5.9 to 29.5 ± 9.5 ng/mL P = 0.004 in the split dose group and 22.9 ± 5.3 to 31.2 ± 12.3 ng/mL P = 0.003 in the single dose group. No significant change was found in increase of serum 25(OH)D between the two groups P = 0.561 . At the end of study, a similar proportion of patients in both groups reached the desirable serum concentration of 25(OH)D ≥ 30 ng/mL (60% in the single group vs. 40% in the split group, P = 0.258 ). No significant cases of hypercalcemia, hyperphosphatemia, or serious adverse events occurred during the study. Conclusion. Weekly single and split doses of ergocalciferol 60,000 IU achieved similar effects on serum 25(OH)D levels among patients on CAPD with vitamin D insufficiency or deficiency, suggesting that weekly single dose would be prescribed for adequate vitamin D repletion. This trial is registered with TCTR20200821005.


2008 ◽  
Vol 28 (2_suppl) ◽  
pp. 11-19 ◽  
Author(s):  
Ronen Levy ◽  
Anca Gal-Moscovici

Bone disease is one of the most challenging complications in patients with chronic kidney disease. Today, it is considered to be part of a complex systemic disorder manifested by disturbances of mineral metabolism and vascular calcifications called chronic kidney disease – mineral bone disorder (CKD-MBD). The term renal osteodystrophy is reserved to define the specific bone lesion in CKD-MBD, whose spectrum ranges from high turnover to low turnover disease. Phosphate retention, decreased serum calcium, and 1,25-dihydroxy vitamin D synthesis are involved in the pathogenesis of high bone turnover. However, the various therapeutic approaches (calcium supplements, phosphate binders, and vitamin D metabolites, among others), the renal replacement modality (hemodialysis or continuous ambulatory peritoneal dialysis), and the types of patients to whom dialysis is offered (more patients who are diabetic or older, or both) may influence the evolution of the bone disorder. As a result, recent studies have reported a greater prevalence of adynamic forms of renal osteodystrophy, especially in diabetic and peritoneal dialysis patients. The present article reviews, for patients treated with peritoneal dialysis, the pathophysiologic mechanisms involved in the evolution and perpetuation of this bone disease and the therapeutic modalities for treating and preventing adynamic bone.


1990 ◽  
Vol 32 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Satoshi Hisano ◽  
Ichiroh Yamane ◽  
Kohji Ueda ◽  
Masataka Kawagoe

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