Iron-based phosphorus chelator: Risk of iron deposition and action on bone metabolism in uremic rats
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Citações na Scopus
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Tipo de produção
article
Data de publicação
2022
Título da Revista
ISSN da Revista
Título do Volume
Editora
SAGE PUBLICATIONS LTD
Autores
CARMO, Wander Barros do
CASTRO, Barbara Bruna Abreu
MANSO, Luisa Cardoso
CARMO, Priscylla Aparecida Vieira do
RODRIGUES, Clovis Antonio
SANDERS-PINHEIRO, Helady
Citação
EXPERIMENTAL BIOLOGY AND MEDICINE, v.247, n.5, p.446-452, 2022
Resumo
Phosphate chelators are frequently used in patients with chronic kidney disease (CKD). New iron-based chelators remain understudied and offer a promising therapeutic option for the control of bone and mineral disorders of chronic kidney disease (BMD-CKD). We assessed the effect of the phosphorus chelator, chitosan-iron III (CH-FeCl), compared to calcium carbonate (CaCO3) in BMD-CKD and the potential iron overload in uremic rats. Thirty-two animals were divided into four groups, namely the control, CKD, CKD/CH-FeCl, and CKD/CaCO3 groups. CKD was induced by adding 0.75% (4 weeks) and 0.1% (3 weeks) adenine to the diet. The chelators were administered from week 3 through week 7. The renal function, BMD-CKD markers, and histomorphometry of the femur were assessed at week 7. The CKD group showed a significant increase in creatinine (83.9 +/- 18.6 vs. 41.5 +/- 22.1 mu mol/L; P = 0.001), phosphate (3.5 +/- 0.8 vs. 2.2 +/- 0.2 mmol/L; P = 0.001), fractional excretion of phosphorus (FEP) (0.71 +/- 0.2 vs. 0.2 +/- 0.17; P = 0.0001), and FGF23 (81.36 +/- 37.16 pg/mL vs. 7.42 +/- 1.96; P = 0.011) compared to the control group. There was no accumulation of serum or bone iron after the use of CH-FeCl. The use of chelators reduced the FEP (control: 0.71 +/- 0.20; CKD/CH-FeCl: 0.40 +/- 0.16; CKD/CaCO3 0.34 +/- 0.15; P = 0.001), without changes in the serum FGF23 and parathyroid hormone levels. Histomorphometry revealed the presence of bone disease with high remodeling in the uremic animals without changes with the use of chelators. The CH-FeCl chelator was efficient in reducing the FEP without iron accumulation, thereby paving the way for the use of this class of chelators in clinical settings in the future.
Palavras-chave
Hyperphosphatemia, chitosan, renal insufficiency, chronic, fibroblast growth factor 23, chronic kidney disease-mineral and bone disorder, iron overload
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