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- W3031437164 abstract "ObjectiveTo observe the expression of parathyroid hormone-related peptide (PTHrp) receptor in tibial growth plate and its effects on tibial extension in chronic renal insufficiency rats.MethodsTwo-week-old male Sprague-Dawley rats were randomly divided into sham group, model group and enalapril group, each with 20 rats. In model group and enalapril group rats had chronic renal insufficiency induced by left ureteral obstruction, and rats were respectively given saline and enalapril by gavage after the operation. In sham group, left ureter was only exposed without ligation, and rats were given saline. The urine was collected 4 weeks after the operation and the total protein content was measured. Then all rats were killed. The concentrations of PTHrp, creatinine and urea nitrogen in intracardiac blood were detected. HE staining and Masson staining were performed on the left kidney to observe pathological changes of glomeruli and renal tubules. The total length of bilateral tibia was measured. The number of columnar cells in the growth plate proliferative zone was measured by safranin O staining and the expression of PTHrp receptor in the growth plate was detected by immunohistochemistry.ResultsThe 24 h urine total protein, creatinine and urea nitrogen in model group were higher than those in sham group (all P<0.05), while these 3 renal functional parameters in enalapril group were lower than those in model group (all P<0.05). In model group and enalapril group rats had higher blood concentrations of PTHrp than that in sham group (all P<0.05), but blood PTHrp in enalapril group was lower than that in model group (P<0.05). HE staining and Masson staining showed that in the model group rats had severe tubular dilation, inflammatory cell infiltration and the tissue fibrosis, while in enalapril group renal tubules slightly dilated and had a few inflammatory cell infiltration and tissue fibrosis. Compared with those in the sham group, in model group the tibia length, the chondrocyte number of column structure in the growth plate proliferative zone and the PTHrp receptor decreased (all P<0.05). But in enalapril group those indexes increased than model group (all P<0.05).ConclusionsChronic renal insufficiency rats had increased PTHrp concentration in the blood but decreased PTHrp receptors expression in tibial growth plate, which lead to their limited tibial extension.Key words: Renal insufficiency, chronic; Parathyroid hormone-related protein; Growth plate; Growth disorders" @default.
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- W3031437164 date "2019-06-15" @default.
- W3031437164 modified "2023-09-26" @default.
- W3031437164 title "Effects of parathyroid hormone-related peptide receptor in tibial growth plate on tibial extension in chronic renal insufficiency rats" @default.
- W3031437164 doi "https://doi.org/10.3760/cma.j.issn.1001-7097.2019.06.005" @default.
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