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• W4214678281 abstract "The aims of this study were to understand whether podocyte injury is involved in proteinuria after rapid ascent to high altitude and to explore whether hypoxia-inducible factor (HIF)-1α is involved in the adaptive regulation of this proteinuria.Rats in the experimental group were housed in a low-pressure oxygen chamber to simulate a high-altitude environment (5,000 m). The intervention group was placed under the same conditions as the experimental group and prolyl-hydroxylase inhibitor (PHI) was intraperitoneally injected. The control group was housed in a low altitude environment (500 m). On days 0, 7, 14, and 28, urinary albumin quantification and electrophoresis were performed. The expression levels of CD2-associated protein (CD2AP), nephrin and HIF-1α were detected by immunofluorescence.The medium and large molecule proteins with molecular weights ranging from 63 to 75 kD were present in the urine of rats in the experimental group and that the urinary albumin levels first increased and then decreased with time and the increase on day 14 was most significant (24.58 ± 4.30 mg on day 14 VS 5.13 ± 1.58 mg on day 0). Electron microscopy revealed podocyte lesions in rats in the experimental group. Immunofluorescence results showed that the protein expression levels of CD2AP and nephrin in the glomeruli of rats in the experimental group were lower than those in the control group (P < 0.001) and that the expression levels of which in the intervention group were higher than those in the experimental group (P < 0.001). The expression of HIF-1α protein in the renal tissues of rats in the experimental group was higher than that in the control group (P < 0.001) and lower than that in the intervention group (P < 0.001).The podocyte injury may be involved in the occurrence of proteinuria after rapid ascent to high altitude. PHI may have a potential role in reducing proteinuria by upregulating local HIF-1α expression in the kidney to alleviate podocyte injury." @default.
• W4214678281 created "2022-03-02" @default.
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• W4214678281 date "2022-04-01" @default.
• W4214678281 modified "2023-10-01" @default.
• W4214678281 title "Hypoxia-inducible factor-1α activation can attenuate renal podocyte injury and alleviate proteinuria in rats in a simulated high-altitude environment" @default.
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• W4214678281 doi "https://doi.org/10.1016/j.bbrc.2022.02.091" @default.
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