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人工晶体学报 ›› 2025, Vol. 54 ›› Issue (6): 1005-1012.DOI: 10.16553/j.cnki.issn1000-985x.2025.0017

• 研究论文 • 上一篇    下一篇

甘草酸对一水合草酸钙结晶的抑制作用

任雅琪(), 王蕾(), 李慧敏, 曲亚倩, 韩培卓, 陶绪堂()   

  1. 山东大学晶体材料国家重点实验室,晶体材料研究院,济南 250100
  • 收稿日期:2025-01-22 出版日期:2025-06-20 发布日期:2025-06-23
  • 通信作者: 王蕾,博士,教授。E-mail:icmwl@sdu.edu.cn; 陶绪堂,博士,教授。E-mail:txt@sdu.edu.cn
  • 作者简介:任雅琪(1999—),女,山东省人,硕士研究生。E-mail:renyaqi13455411508@163.com
  • 基金资助:
    国家自然科学基金(52472007);山东省自然科学基金(ZR2024ME100);山东省泰山学者攀登计划(tapd20221102);111计划2.0(BP2018013)

Inhibition of the Growth of Calcium Oxalate Monohydrate by Glycyrrhizic Acid

REN Yaqi(), WANG Lei(), LI Huimin, QU Yaqian, HAN Peizhuo, TAO Xutang()   

  1. Institute of Crystal Materials,State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China
  • Received:2025-01-22 Online:2025-06-20 Published:2025-06-23

摘要: 一水合草酸钙(COM)是肾结石最主要的成分。本文探讨了一种多功能的天然产物——甘草酸(GlA)对COM结晶过程的抑制作用及其作用机理。采用钙离子选择电极研究了COM的结晶动力学,通过光学显微镜和扫描电子显微镜定量分析了GlA对COM晶体的尺寸及形貌的影响。同时借助分子模拟计算了COM各晶面对GlA分子的吸附能。结果表明,GlA是一种高效的COM结晶抑制剂,且对COM结晶的抑制程度与GlA浓度呈正相关。同时,由于GlA在COM{021}和{121ˉ}表面的特异性吸附,在GlA存在下,COM晶体的长宽比显著降低。GlA不仅可以与COM溶液中的Ca2+产生络合作用,降低Ca2+的有效浓度,还可以通过COO-(COM)…Ca2+-OOC(GlA)的方式吸附于晶体表面,阻碍晶体的进一步生长。这些发现为肾结石的防治提供了新的思路和潜在的治疗策略。

关键词: 一水合草酸钙; 甘草酸; 结晶动力学; 抑制; 特异性吸附; 络合作用; 肾结石

Abstract: Calcium oxalate monohydrate (COM) is the main component of kidney stones. This study explores the inhibitory effects of glycyrrhizic acid (GlA), a multifunctional natural compound, on the crystallization process of COM and elucidates its mechanism of action. The crystallization kinetics of COM were examined by a calcium ion selective electrode, the impact of GlA on the size and morphology of COM crystals was quantitatively assessed through optical microscopy and scanning electron microscopy. Additionally, molecular simulations were employed to calculate the adsorption energy of GlA molecules on the COM crystal surface. The findings indicate that GlA serves as a highly effective inhibitor of COM crystallization, with the degree of inhibition positively correlating with GlA concentration. This inhibition is attributed to the specific adsorption of GlA on the {021} and {121ˉ}surfaces of COM, which significantly reduces the crystal aspect ratio. During the COM crystallization process, GlA plays a dual role: it complexes with Ca2+ in solution, thereby reducing their effective concentration, and it adsorbs onto the crystal surface via COO-(COM)…Ca2+-OOC(GlA) interactions, hindering further crystal growth. These findings provide new ideas and potential therapeutic strategies for the prevention and treatment of kidney stones.

Key words: calcium oxalate monohydrate; glycyrrhizic acid; crystallization kinetics; inhibition; specific adsorption; complexation; kidney stone

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