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Renal artery coil embolization as an endovascular approach for establishing a rabbit model of chronic kidney disease.
Journal of Vascular and Interventional Radiology : JVIR 2024 April 24
PURPOSE: This study aimed to investigate the safety and feasibility of renal artery coil embolization for establishing chronic kidney disease (CKD) in rabbits.
METHODS: Ten male adult New Zealand rabbits underwent renal artery coil embolization. Initially, the main renal artery on one side was completely embolized, followed by embolization of approximately 2/3 of the primary branches of the contralateral renal artery one week later. Four rabbits were randomly chosen for sacrifice at 4 weeks post-embolization, while the remaining six were sacrificed at 8 weeks post-embolization. The assessment encompassed the animals' general condition, angiography, biochemical parameters, inflammatory markers, and histopathological examination of the kidneys and hearts.
RESULTS: Four weeks after embolization, serum creatinine level showed a significant increase (2.4 mg/dL ± 0.6, p = 0.009 vs. baseline), with a subsequent 4.12-fold elevation at 8 weeks post-embolization (4.9 mg/dL ± 1.4, p < 0.001 vs. baseline). Additionally, significant increases in serum blood urea nitrogen, calcium, and potassium ions were observed at 8 weeks post-embolization (58.3 mg/dL ± 19.0, p < 0.001 vs. baseline; 23.1 mg/dL ± 4.4, p < 0.001 vs. baseline; 6.3 mEq/L ± 0.7, p < 0.001 vs. baseline). The completely embolized kidney exhibited notable atrophy, severe fibrosis, and cortical calcification, whereas the contralateral partially embolized kidney displayed compensatory hypertrophy, along with glomerulosclerosis, tubular dilation, tubular casts, and interstitial fibrosis.
CONCLUSION: Renal artery coil embolization proved effective and safe for establishing a CKD model in rabbits.
METHODS: Ten male adult New Zealand rabbits underwent renal artery coil embolization. Initially, the main renal artery on one side was completely embolized, followed by embolization of approximately 2/3 of the primary branches of the contralateral renal artery one week later. Four rabbits were randomly chosen for sacrifice at 4 weeks post-embolization, while the remaining six were sacrificed at 8 weeks post-embolization. The assessment encompassed the animals' general condition, angiography, biochemical parameters, inflammatory markers, and histopathological examination of the kidneys and hearts.
RESULTS: Four weeks after embolization, serum creatinine level showed a significant increase (2.4 mg/dL ± 0.6, p = 0.009 vs. baseline), with a subsequent 4.12-fold elevation at 8 weeks post-embolization (4.9 mg/dL ± 1.4, p < 0.001 vs. baseline). Additionally, significant increases in serum blood urea nitrogen, calcium, and potassium ions were observed at 8 weeks post-embolization (58.3 mg/dL ± 19.0, p < 0.001 vs. baseline; 23.1 mg/dL ± 4.4, p < 0.001 vs. baseline; 6.3 mEq/L ± 0.7, p < 0.001 vs. baseline). The completely embolized kidney exhibited notable atrophy, severe fibrosis, and cortical calcification, whereas the contralateral partially embolized kidney displayed compensatory hypertrophy, along with glomerulosclerosis, tubular dilation, tubular casts, and interstitial fibrosis.
CONCLUSION: Renal artery coil embolization proved effective and safe for establishing a CKD model in rabbits.
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