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- W2788582608 abstract "Objective To investigate changes in renal oxygenation levels by blood-oxygenation-level dependent (BOLD)-magnetic resonance imaging (MRI), and to evaluate BOLD-MRI for detecting early diabetic renal injury. Methods Seventy-five rats, with unilateral nephrectomy, were randomly divided into streptozotocin-induced diabetes mellitus (DM, n = 65) and normal control (NC, n = 10) groups. BOLD-MRI scans were performed at baseline (both groups) and at 3, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 70 days (DM only). Renal cortical (C) and medullary (M) R2* signals were measured and R2* medulla/cortex ratio (MCR) was calculated. Results DM-group CR2* and MR2* values were significantly higher than NC values following diabetes induction. R2* values increased gradually and peaked at day 35 (CR2*, 33.95 ± 0.34 s –1 ; MR2*, 43.79 ± 1.46 s –1 ), then dropped gradually (CR2*, 33.17 ± 0.69 s –1 ; MR2*, 41.61 ± 0.95 s –1 at day 70). DM-group MCR rose gradually from 1.12 to 1.32 at day 42, then decreased to 1.25 by day 70. Conclusions BOLD-MRI can be used to non-invasively evaluate renal hypoxia and early diabetic renal injury in diabetic rats. MCR may be adopted to reflect dynamic changes in renal hypoxia." @default.
- W2788582608 created "2018-03-06" @default.
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- W2788582608 date "2018-02-15" @default.
- W2788582608 modified "2023-10-05" @default.
- W2788582608 title "BOLD MRI to evaluate early development of renal injury in a rat model of diabetes" @default.
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- W2788582608 doi "https://doi.org/10.1177/0300060517743826" @default.
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