中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (11): 1749-1754.doi: 10.3969/j.issn.2095-4344.1138

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

山茱萸总甙干预骨质疏松模型大鼠骨代谢:TRPV6、TRPV5通路的变化

李绍烁1,赵京涛1,2,何昌强3,孙汉桥4,阮冠龙1   

  1. (1广州中医药大学,广东省广州市  510405;2广州中医药大学第一附属医院,广东省广州市  510405;3深圳市罗湖区中医院,广东省深圳市  518021;4湖北省中医院,湖北省武汉市  430061)
  • 收稿日期:2018-10-27 出版日期:2019-04-18 发布日期:2019-04-18
  • 通讯作者: 赵京涛,硕士,副教授,副主任医师,硕士生导师,广州中医药大学,广东省广州市 510405;广州中医药大学第一附属医院,广东省广州市 510405
  • 作者简介:李绍烁,男,1992年生,广东省汕头市人,汉族,广州中医药大学在读硕士,主要从事中医药防治骨伤科疾病的研究工作。
  • 基金资助:

    广东省自然科学基金(S2013010012540),项目负责人:赵京涛

Cornus officinalis glycosides intervening bone metabolism in rat models of osteoporosis: changes of TRPV6 and TRPV5 pathways

Li Shaoshuo1,Zhao Jingtao1,2,He Changqiang3,Sun Hanqiao4,Ruan Guanlong1   

  1. (1Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China; 2the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China; 3Shenzhen Luohu District Hospital of Traditional Chinese Medicine, Shenzhen 518021, Guangdong Province, China; 4Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430061, Hubei Province, China)
  • Received:2018-10-27 Online:2019-04-18 Published:2019-04-18
  • Contact: Zhao Jingtao, Master, Associate professor, Associate chief physician, Master’s supervisor, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China; the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • About author:Li Shaoshuo, Master candidate, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • Supported by:

    the Natural Science Foundation of Guangdong Province, No. S2013010012540 (to ZJT)

摘要:

文章快速阅读:

文题释义:
TRPV6和TRPV5:作为瞬时性受体电位通道(TRP)超家族中目前已知仅有的高选择性钙离子通道,通过免疫组织化学、Western-blot、RT-PCR等技术已发现,包括人与鼠类、兔等哺乳动物的一些具有钙离子跨膜转运功能的组织器官(如小肠、骨组织、肾脏等),都存在TRPV6和TRPV5通道蛋白,而雌激素、甲状旁腺激素、1,25-(OH)2D3等多种因素通过对TRPV6和TRPV5通路表达进行调节,从而影响组织的钙离子代谢。
山茱萸:学名Cornus officinalis Sieb.et Zucc.,产自中国山西、陕西、甘肃、山东、江苏、浙江、安徽、江西、河南、湖南等省,朝鲜、日本也有分布。生于海拔400-1 500 m,稀达2 100 m的林缘或森林中。在四川有引种栽培。该种(包括川鄂山茱萸)的果实称“萸肉”,俗名枣皮,供药用,味酸涩,性微温,为收敛性强壮药,有补肝肾止汗的功效。

摘要
背景:
钙离子通道的调控直接影响骨的代谢,但骨代谢与TRPV6、TRPV5通路的联系及相互作用目前尚未明确。研究认为山茱萸具有防治骨质疏松作用。
目的:探讨山茱萸总甙调节TRPV6、TRPV5通路表达防治骨质疏松症的机制。
方法:健康6月龄雌性SD大鼠50只,体质量(350±15) g,由广州中医药大学实验动物中心提供。随机将大鼠分为5组,即正常对照组,模型组,山茱萸总甙干预低剂量组、中剂量组及高剂量组。除正常对照组外,其余各组大鼠行双侧卵巢切除术建立骨质疏松模型。造模后山茱萸总甙干预各组依剂量每天予药物灌胃,正常对照组及模型组予等量生理盐水灌胃,共12周。实验结束时,双能X射线骨密度仪扫描各组大鼠获取骨密度,取右侧股骨组织RT-PCR检测TRPV6、TRPV5 RNA基因表达情况。
结果与结论:①山茱萸干预各组大鼠骨密度均较模型组提高(P < 0.05);②各组大鼠骨组织均有TRPV6、TRPV5表达,其中山茱萸总甙干预各组TRPV6、TRPV5表达均较正常对照组及模型组增加,以中剂量组表达升高最明显,但高剂量组TRPV6/TRPV5倍比关系为最高,成骨效能最好;③结果说明,山茱萸总甙可调节骨质疏松大鼠骨组织TRPV6、TRPV5通道蛋白表达,改变TRPV6/TRPV5倍比关系,影响成骨细胞和破骨细胞功能,促进成骨方向的骨代谢转变及提高骨密度。

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
ORCID: 0000-0003-0247-9863(李绍烁)

关键词: 骨质疏松, 山茱萸总甙, TRPV6, TRPV5, 钙离子通道, 骨代谢, 成骨转化, 成骨功能, 骨密度

Abstract:

BACKGROUND: Regulation of calcium channel directly affects bone metabolism, but the correlation of bone metabolism with TRPV6/TRPV5 pathways remains unclear. Cornus officinalis has been shown to treat and prevent osteoporosis.
OBJECTIVE: To explore the mechanism of Cornus officinalis glycosides underlying intervening the expression of TRPV6 and TRPV5 for preventing and treating osteoporosis.
METHODS: Fifty healthy 6-month-old male Sprague-Dawley rats (provide by Lanoratory Animal Center of Guangzhou University of Chiense Medicine) were selected, weighting (350±15) g. The rats were randomly divided into control (normal saline treatment), model (normal saline treatment), low-, medium, and high-dose Cornus officinalis glycosides groups. The model of osteoporosis was established by bilateral ovariectomy in the latter four groups. The administration was given gastricly, and for 12 weeks. At the end of the experiment, the bone mineral density was detected by dual energy X-ray absorptiometry. The expression levels of TRPV6 and TRPV5 in the right femur were detected by RT-PCR.
RESULTS AND CONCLUSION: The bone mineral density in the Cornus officinalis glycosides groups was significantly higher than that in the model group (P < 0.05). TRPV6 and TRPV5 were expressed in bone tissues of rats in each group. The expression levels of TRPV6 and TRPV5 in all the Cornus officinalis glycosides groups were higher than those in the control and model groups. The medium dose group had the highest expression levels of TRPV6 and TRPV5. The ratio of TRPV6 to TRPV5 and osteogenesis performance in the high-dose group was highest. These results imply that Cornus officinalis glycosides can promote the expression of TRPV6 and TRPV5 in bone tissue of osteoporotic rats, change the ratio of TRPV6 to TRPV5, affect the function of osteoblasts and osteoclasts, promote osteogenesis and improve bone mineral density.

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

Key words: Cornus, Osteoporosis, Calcium Channels, Tissue Engineering

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