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- W2048058082 abstract "Objective Indoxyl sulfate (IS), a uremic toxin, is a risk factor for progression of chronic kidney disease (CKD). AST-120 reduces serum IS and delays the progression of CKD. This study aimed to examine whether AST-120 inhibits epithelial-to-mesenchymal transition (EMT) in the kidneys of CKD rats. Methods CKD rats were produced by 5/6 nephrectomy and were divided into 2 groups: (1) CKD rats and (2) AST-120-treated CKD rats at a dosage of 4 g/kg body weight/day. After 10 weeks, their kidneys were excised for histological and immunohistochemical analysis. EMT was evaluated by immunohistochemistry of zonula occludens (ZO-1), an epithelial marker, and alpha-smooth muscle actin (α-SMA), a mesenchymal marker. Interstitial fibrosis was evaluated by Masson’s trichrome staining. Results CKD rats showed reduced expression of ZO-1 and enhanced expression of α-SMA as compared with normal rats. Administration of AST-120 to CKD rats increased expression of ZO-1 and decreased expression of α-SMA as compared with CKD rats. Further, CKD rats showed enhanced extent of interstitial fibrosis as compared with normal rats, and administration of AST-120 to CKD rats ameliorated interstitial fibrosis. CKD rats showed increased serum level of IS as compared with normal rats, whereas administration of AST-120 to CKD rats decreased both serum and urine levels of IS. Conclusion We conclude that AST-120 ameliorated EMT and interstitial fibrosis in the kidneys of CKD rats, probably by alleviating IS overload on the kidneys. Indoxyl sulfate (IS), a uremic toxin, is a risk factor for progression of chronic kidney disease (CKD). AST-120 reduces serum IS and delays the progression of CKD. This study aimed to examine whether AST-120 inhibits epithelial-to-mesenchymal transition (EMT) in the kidneys of CKD rats. CKD rats were produced by 5/6 nephrectomy and were divided into 2 groups: (1) CKD rats and (2) AST-120-treated CKD rats at a dosage of 4 g/kg body weight/day. After 10 weeks, their kidneys were excised for histological and immunohistochemical analysis. EMT was evaluated by immunohistochemistry of zonula occludens (ZO-1), an epithelial marker, and alpha-smooth muscle actin (α-SMA), a mesenchymal marker. Interstitial fibrosis was evaluated by Masson’s trichrome staining. CKD rats showed reduced expression of ZO-1 and enhanced expression of α-SMA as compared with normal rats. Administration of AST-120 to CKD rats increased expression of ZO-1 and decreased expression of α-SMA as compared with CKD rats. Further, CKD rats showed enhanced extent of interstitial fibrosis as compared with normal rats, and administration of AST-120 to CKD rats ameliorated interstitial fibrosis. CKD rats showed increased serum level of IS as compared with normal rats, whereas administration of AST-120 to CKD rats decreased both serum and urine levels of IS. We conclude that AST-120 ameliorated EMT and interstitial fibrosis in the kidneys of CKD rats, probably by alleviating IS overload on the kidneys." @default.
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- W2048058082 date "2012-01-01" @default.
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- W2048058082 title "AST-120 Ameliorates Epithelial-to-Mesenchymal Transition and Interstitial Fibrosis in the Kidneys of Chronic Kidney Disease Rats" @default.
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- W2048058082 doi "https://doi.org/10.1053/j.jrn.2011.10.015" @default.
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