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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Treatment with hydrogen sulfide donor attenuates bone loss induced by modeled microgravity
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Treatment with hydrogen sulfide donor attenuates bone loss induced by modeled microgravity

机译:用硫化氢供体处理衰减通过模拟的微匍匐诱导的骨质损失

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摘要

The present study was undertaken to explore the therapeutic potential of hydrogen sulfide against bone loss induced by modeled microgravity. Hindlimb suspension (HLS) and rotary wall vessel bioreactor were applied to model microgravity in vivo and in vitro, respectively. Treatment of rats with GYY4137 (a water soluble donor of hydrogen sulfide, 25 mg/kg per day, i.p.) attenuated HLS-induced reduction of bone mineral density in tibiae, and preserved bone structure in tibiae and mechanical strength in femurs. In HLS group, GYY4137 treatment significantly increased levels of osteocalcin in sera. Interestingly, treatment of HLS rats with GYY4137 enhanced osteoblast surface, but had no significant effect on osteoclast surface of proximal tibiae. In MC3T3-E1 cells exposed to modeled microgravity, GYY4137 stimulated transcriptional levels of runt-related transcription factor 2 and enhanced osteoblastic differentiation, as evidenced by increased mRNA expression and activity of alkaline phosphatase. HLS in rats led to enhanced levels of interleukin 6 in sera, skeletal muscle, and tibiae, which could be attenuated by GYY4137 treatment. Our study showed that GYY4137 preserved bone structure in rats exposed to HLS and promoted osteoblastic differentiation in MC3T3-E1 cells under modeled microgravity.
机译:本研究进行了探讨硫化氢对由模拟的微侵袭诱导的骨质流失的治疗潜力。将后肢悬浮液(HLS)和旋转壁容器生物反应器分别用于体内和体外模拟微匍匐性。用Gyy4137治疗大鼠(硫化氢的水溶性供体,每天25mg / kg,I.P)诱导胫骨中的骨质矿物密度降低,并在胫骨中保存骨骼结构和股骨的机械强度。在HLS组中,Gyy4137治疗在血清中显着增加了骨钙蛋白水平。有趣的是,用Gyy4137增强的成骨细胞表面治疗HLS大鼠,但对近端胫骨的骨细胞表面没有显着影响。在暴露于模拟的微疱疹的MC3T3-E1细胞中,Gyy4137刺激了相关转录因子2的转录水平和增强的骨细胞分化,如增加的mRNA表达和碱性磷酸酶的活性所证明。大鼠中的HLS导致血清,骨骼肌和胫骨中白细胞介素6水平,其可以通过Gyy4137治疗衰减。我们的研究表明,在模拟的微匍匐基础下,Gyy4137在暴露于HLS的大鼠中的骨结构并促进MC3T3-E1细胞中的骨细胞分化。

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  • 作者单位

    Xi An Jiao Tong Univ Dept Spine Surg Hong Hui Hosp Xian 710054 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Dept Spine Surg Hong Hui Hosp Xian 710054 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Dept Spine Surg Hong Hui Hosp Xian 710054 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Dept Spine Surg Hong Hui Hosp Xian 710054 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Dept Spine Surg Hong Hui Hosp Xian 710054 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Dept Spine Surg Hong Hui Hosp Xian 710054 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Dept Spine Surg Hong Hui Hosp Xian 710054 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Dept Spine Surg Hong Hui Hosp Xian 710054 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Dept Spine Surg Hong Hui Hosp Xian 710054 Shaanxi Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 药理学;
  • 关键词

    microgravity; rotary wall vessel bioreactor; hydrogen sulfide; interleukin 6; osteoblast;

    机译:微匍匐;旋转壁容器生物反应器;硫化氢;白细胞介素6;成骨细胞;

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