中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (5): 888-898.doi: 10.12307/2024.593

• 骨组织构建 bone tissue construction • 上一篇    下一篇

柚皮苷抑制骨质疏松大鼠骨组织的铁沉积及细胞凋亡

兰双笠1,向飞帆2,邓光慧2,肖喻琨2,阳运康2,梁  杰2   

  1. 西南医科大学附属医院,1肝胆外科,2骨与关节外科,四川省泸州市  646000
  • 收稿日期:2023-08-04 接受日期:2023-12-14 出版日期:2025-02-18 发布日期:2024-06-01
  • 通讯作者: 梁杰,硕士,主治医师,西南医科大学附属医院骨与关节外科,四川省泸州市 646000
  • 作者简介:兰双笠,女,1994年生,四川省隆昌市人,汉族,主要从事肝病代谢、骨质疏松方向的研究。
  • 基金资助:
    四川省科技计划联合创新专项项目(2022YFS0628),项目负责人:向飞帆;四川省科学技术厅自然基金项目(2022NSFSC1534),项目负责人:阳运康

Naringin inhibits iron deposition and cell apoptosis in bone tissue of osteoporotic rats 

Lan Shuangli1, Xiang Feifan2, Deng Guanghui2, Xiao Yukun2, Yang Yunkang2, Liang Jie2   

  1. 1Department of Hepatobiliary Surgery, 2Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2023-08-04 Accepted:2023-12-14 Online:2025-02-18 Published:2024-06-01
  • Contact: Liang Jie, Master, Attending physician, Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Lan Shuangli, Department of Hepatobiliary Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:
    Joint Innovation Special Project of Sichuan Science and Technology Program, No. 2022YFS0628 (to XFF); Natural Fund Project of Sichuan Provincial Science and Technology Department, No. 2022NSFSC1534 (to YYK)

摘要:


文题释义:
骨质疏松症:是在年龄增长过程中出现的以骨量降低、骨微结构破坏、骨脆性升高、易骨折为主要特征的全身性退行性骨代谢疾病,多发于女性。
铁代谢:铁是细胞进行增殖、分化、生长、运动等生理过程中必不可缺的微量元素之一。铁元素不仅参与细胞中氧的运输和DNA的配装与合成,并且作为线粒体中三羧酸循环重要的辅助因子直接参与细胞中三磷酸腺苷的合成,在此过程中不仅产生三磷酸腺苷还产生了活性氧,当铁代谢异常时细胞中的氧化与抗氧化随之失衡。

背景:有研究发现,铁代谢异常诱发的骨组织细胞异常凋亡在骨质疏松进展中发挥重要作用。
目的:探讨柚皮苷对骨质疏松大鼠骨组织铁代谢与细胞凋亡的影响。
方法:取50只2月龄雌性SD大鼠,采用随机数字表法分成5组,每组10只:除假手术组外,骨质疏松组、柚皮苷低剂量组、柚皮苷高剂量组、柚皮苷高剂量+DKK-1组均通过切除双侧卵巢建立骨质疏松模型。造模8周后,柚皮苷低剂量组、柚皮苷高剂量组分别灌胃给予100,400 mg/(kg•d)的柚皮苷,柚皮苷高剂量+DKK-1组灌胃给予400 mg/(kg•d)的柚皮苷+皮下注射25 mg/(kg•d)的Wnt1信号通路抑制剂DKK-1,连续给药7 d。给药结束后进行相关指标的检测。
结果与结论:①与骨质疏松组相比,柚皮苷可提升大鼠骨密度及血清钙、超氧化物歧化酶水平(P < 0.05),降低血清中骨钙素、丙二醛、磷水平(P < 0.05),DKK-1可部分抑制柚皮苷的干预作用(P < 0.05);②Micro-CT扫描、苏木精-伊红与TUNEL染色显示,与骨质疏松组相比,柚皮苷可显著改善大鼠骨微结构、降低细胞凋亡率,DKK-1可部分抑制柚皮苷的干预作用;③免疫荧光染色显示,与骨质疏松组相比,柚皮苷可降低胫骨组织内活性氧含量、抗酒石酸酸性磷酸酶的表达,提升碱性磷酸酶的表达(P < 0.05),DKK-1可部分抑制柚皮苷的干预作用(P < 0.05);④普鲁士蓝染色、免疫组化染色显示,与骨质疏松组相比,柚皮苷可降低骨组织与肝组织内的铁沉积、骨组织铁吸收相关蛋白受体1的表达(P < 0.05),提升骨组织膜铁转运蛋白1的表达(P < 0.05),DKK-1可部分抑制柚皮苷的干预作用(P < 0.05);⑤胫骨标本PCR与Western blot检测显示,与骨质疏松组相比,柚皮苷可降低抗酒石酸酸性磷酸酶、铁吸收相关蛋白受体1和Bax的表达(P < 0.05),提升碱性磷酸酶、膜铁转运蛋白1、Bcl-2、Wnt1和β-catenin的表达(P < 0.05),DKK-1可部分抑制柚皮苷的干预作用(P < 0.05);⑥结果表明,柚皮苷可通过减少骨组织中的铁沉积及细胞凋亡率抑制骨质疏松的进展,这可能与激活Wnt1信号通路有关。
https://orcid.org/0009-0007-8554-9367(兰双笠)
中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 柚皮, 骨质疏松, 铁代谢, Wnt1信号通路, 细胞凋亡

Abstract: BACKGROUND: It has been found that abnormal apoptosis of bone tissue cells induced by abnormal iron metabolism plays an important role in the progression of osteoporosis.
OBJECTIVE: To investigate the effect of naringin on iron metabolism and cell apoptosis in bone tissue of rats with osteoporosis. 
METHODS: Fifty 2-month-old female Sprague-Dawley rats were randomly divided into five groups with 10 rats in each group: sham group, osteoporosis group, naringin low-dose group, naringin high-dose group, and naringin high-dose+DKK-1 group. Except for the sham group, rat models of osteoporosis were established by removing bilateral ovarian tissues in the other groups. At 8 weeks after modeling, rats in the naringin low- and high-dose groups were given 100 and 400 mg/kg/d naringenin by gavage, respectively, and rats in the naringenin high dose+DKK-1 group were given 400 mg/kg/d naringin  by gavage and subcutaneous injection of 25 mg/kg/d DKK-1, an inhibitor of the Wnt1 signaling pathway, for 7 consecutive days. Relevant indexes were detected after administration. 
RESULTS AND CONCLUSION: Compared with the osteoporosis group, naringin could enhance the bone mineral density and serum calcium and superoxide dismutase levels in rats (P < 0.05), and reduce the serum levels of osteocalcin, malondialdehyde, and phosphorus (P < 0.05), while DKK-1 could partially inhibit the interventional effect of naringin (P < 0.05). Results from Micro-CT scanning, hematoxylin-eosin and TUNEL staining showed that compared with the osteoporosis group, naringin significantly improved bone microstructure and reduced the rate of cell apoptosis, while DKK-1 partially inhibited the interventional effect of naringin. Immunofluorescence staining results showed that compared with the osteoporosis group, naringin could reduce the oxygen content, anti-tartaric acid phosphatase expression, and elevate the expression of alkaline phosphatase in active tibia tissues (P < 0.05), while DKK-1 could partially inhibit the interventional effect of naringin (P < 0.05). Results from Prussian blue staining and immunohistochemical staining showed that compared with the osteoporosis group, naringin reduced iron deposition in bone and liver tissues as well as the expression of transferrin receptor 1 (P < 0.05), and elevated the protein expression of ferroportin 1 (P < 0.05) in bone tissue, and DKK-1 partially inhibited the intervention of naringin (P < 0.05). PCR and western blot assay of tibia specimens showed that compared with the osteoporosis group, naringin decreased the expression of anti-tartrate acid phosphatase, transferrin receptor 1 and Bax (P < 0.05), and elevated the expression of alkaline phosphatase, ferroportin 1, Bcl-2, Wnt1 and β-catenin (P < 0.05), while DKK-1 partially inhibited the interfering effect of naringin (P < 0.05). To conclude, naringin inhibits the progression of osteoporosis by reducing iron deposition and apoptosis rate in bone tissue, which may be related to the activation of the Wnt1 signaling pathway.

Key words:  naringin, osteoporosis, iron metabolism, Wnt1 signaling pathway, cell apoptosis

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