Chinese Journal of Pharmacovigilance ›› 2022, Vol. 19 ›› Issue (12): 1303-1308.
DOI: 10.19803/j.1672-8629.20220459

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Histopathology of acute kidney injury in SD rats induced by three monomer components of Polygoni Multiflori Radix

HUO Guitao, WEN Hairuo, YANG Yanwei, QIN Chao, WANG Qi#, MA Shuangcheng*   

  1. National Institutes for Food and Drug Control, Beijing 100050, China
  • Received:2022-08-05 Online:2022-12-15 Published:2022-12-21

Abstract: Objective To study the morphology of acute renal injury caused by three Polygoni Multiflori Radix monomers in SD rats after 14 days of oral administration. Methods Fifty male SD rats were randomly divided into the control group, the 28 mg·kg-1, 280 mg·kg-1 and 1 120 mg·kg-1 dose of emodin-8-O-β-D-glucoside groups, the 6.5 mg·kg-1, 65 mg·kg-1 and 650 mg·kg-1 dose groups of emodin-type monoanthranone and the 6.5 mg·kg-1, 65 mg·kg-1 and 650 mg·kg-1 dose groups of physcion. All doses of emodin-8-O-β-D-glucoside, emodin-type monoanthranone and physcion were administered orally for 14 days, respectively. After administration, the animals were anesthetized and necropsied, the kidneys were examined for macroscopic observation and weighed before the fixed kidneys were subjected to section preparation and histopathological examination. Results Macroscopic observation showed white nodules in bilateral kidneys of one rat in the 650 mg·kg-1 dose group of emodin-type monoanthranone. There were no gross lesions in SD rats in the three dose groups of emodin-8-O-β-D-glucoside, the 6.5 mg·kg-1, 65 mg·kg-1 dose groups of emodin-type monoanthranone, or in the three dose groups of physcion. Compared with the control group, there were no statistically significant differences in the absolute kidney weight or organ/body weight ratio of emodin-8-O-β-D-glucoside, emodin-type monoanthranone and physcion in each dose group (P >0.05). Microscopic observation showed that emodin-8-O-β-D-glucoside could cause the formation of tubular hyaline droplets, emodin-type monoanthranone could induce tubular pigmentation and aggravate tubular basophilia, and that physcion did not cause obvious injury to the kidney. Conclusion Emodin-8-O-β-D-glucoside and emodin-type monoanthranone can lead to morphological changes in the kidney of SD rats, but physcion does not.

Key words: monomer components of Polygoni Multiflori Radix, emodin-8-O-β-D-glucoside, emodin-type monoanthranone, physcion, rat, kidney toxicity, morphological characteristcs

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