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Poly(methyl methacrylate) bone cement composited with mineralized collagen for osteoporotic vertebral compression fractures in extremely old patients

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Regenerative Biomaterials 2020年第1期7卷 29-34页

作者： Kefeng Luo guoqiang jiang Jinjin Zhu Bin Lu Jiye Lu Kai Zhang Xiumei Wang Fu-Zhai Cui Department of Orthopaedic Surgery The Affiliated Hospital of Medical School of Ningbo UniversityZhejiangChina Department of Orthopaedic Surgery Sir Run Run Shaw HospitalZhejiang University School of MedicineZhejiangChina State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

To examine the clinical effects of a new bone cement composed of poly(methyl methacrylate)(PMMA)and mineralized collagen(MC)compared with pure PMMA bone cement in treating osteoporotic vertebral compression fractures(OVCFs)in patients aged over *** all,32 cases using pure PMMA bone cement and 31 cases using MC-modified PMMA(MC-PMMA)bone cement for OVCFs between June 2014 and March 2016 were screened as PMMA group and MC-PMMA group,respectively,with an average age of over *** operation duration,intraoperative blood loss,hospital stay,oswestry disability index(ODI),visual analogue scale(VAS),anterior vertebral height(AVH),intermediate vertebral height(IVH)and posterior vertebral height(PVH)of injured vertebrae,vertebral computed tomography value,re-fracture rate of adjacent vertebrae,correction rate of spinal kyphotic angle and wedge-shaped vertebra angle and surgical complications were compared between the two *** the early post-operative period,the VAS,ODI,AVH and IVH in MC-PMMA group were comparable to those in the traditional PMMA ***,the MC-PMMA group showed better effects compared with the PMMA group 12months after ***,this new bone cement has superior clinic effects in the long term.

关键词： percutaneous vertebroplasty vertebral compression fractures PMMA bone cement mineralized collagen elderly patient

Bioactive mineralized small intestinal submucosa acellular matrix/PMMA bone cement for vertebral bone regeneration

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Regenerative Biomaterials 2023年第1期10卷 957-967页

作者： Xinbao Miao Shuhui Yang Jinjin Zhu Zhe Gong Dongze Wu Juncong Hong Kaiwen Cai Jiying Wang Xiangqian Fang Jiye Lu guoqiang jiang Department of Spinal Surgery The First Affiliated Hospital of Ningbo UniversityNingbo 315000ZhejiangChina School of Materials Science and Engineering Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue EngineeringZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Department of Orthopedic Surgery Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016ZhejiangChina Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang ProvinceHangzhou 310016ZhejiangChina Department of Anesthesiology The First People’s Hospital of Linping DistrictHangzhou 311100ZhejiangChina

Polymethylmethacrylate(PMMA)bone cement extensively utilized for the treatment of osteoporotic vertebral compression fractures due to its exceptional handleability and mechanical ***,the clinical application of PMMA bone cement is restricted by its poor bioactivity and excessively high modulus of ***,mineralized small intestinal submucosa(mSIS)was incorporated into PMMA to prepare a partially degradable bone cement(mSIS-PMMA)that provided suitable compressive strength and reduced elastic modulus compared to pure *** ability of mSIS-PMMA bone cement to promote the attachment,proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells was shown through cellular experiments carried out in vitro,and an animal osteoporosis model validated its potential to improve *** these benefits,mSIS-PMMA bone cement shows promising potential as an injectable biomaterial for orthopedic procedures that require bone augmentation.

关键词： PMMA bone cement mineralized small intestinal submucosa mechanical properties osteogenic differentiation osseointegration

Modified poly(methyl methacrylate) bone cement in the treatment of Kümmell disease

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Regenerative Biomaterials 2021年第1期8卷 1-9页

作者： Jinjin Zhu Shuhui Yang Yute Yang Teng Yao Gang Liu Shunwu Fan He Zhao Fuzhai Cui Xiumei Wang guoqiang jiang Xiangqian Fang Department of Orthopaedic Surgery Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China Key Laboratory of Mus culoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province Hangzhou 310016China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Spinal Surgery The Afiliated Hospital of Medical School of Ningbo UniversityNingbo 315020China Department of Orthopedics Dongzhimen Hos pitalBeijing University of Chinese MedicineBeijing 100700China

Kuümmell disease(KD)causes serious vertebral body collapse in ***,only a few case reports have been conducted and the number of patients with KD investigated was ***,the frequently used poly(methyl methacrylate)(PMMA)bone cement for KD is limited by excessive modulus and poor ***,we aimed to modify PMMA bone cement with mineralized collagen(MC),and compare the clinical effects,image performance and finite ele-ment analysis between the modified bone cement and PMMA bone cement for the treatment of phase I and II ***-nine KD patients treated with PMMA bone cement and 40 KD patients treated with MC-modified PMMA bone cement from June 2015 to March 2017 were retrospectively *** surgical procedure,intraoperative blood loss,hospital stay and complications were compared between different *** analog scale,Oswestry disability index,anterior verte-bral height,posterior vertebral height,computed tomography value,adjacent vertebral re-fracture,Cobb angle and wedge-shaped correction angle were ***,the representative sample was selected for finite element *** found that the MC-modified PMMA bone ce-ment could achieve the same effect as that of PMMA bone cement and was associated with better vertebral height restoration in the long term.

关键词： mineralized collagen poly(methylmethacrylate)bonecement Kümmelldisease mechanicalproperty

Effect of Different Pollination Varieties on Qingxiang Pear Fruit Quality

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Asian Agricultural Research 2016年第11期8卷 92-94页

作者： Zhuqin LIU Jinhui CHEN Yunting ZHENG guoqiang jiang Forestry Research Institute of Ningbo Academy of Agricultural Sciences Yuyao Shunshui Fruit and Vegetable Cooperative Rural Economic Management Office of Yuyao Ditang Street

With Qingxiang pear as test material,we study the effect of different pollination varieties on Qingxiang pear fruit quality. The results show that Xinshiji,Xizilu,Cuiguan and Yuanhuang as the pollination varieties for Qingxiang pear can create the best comprehensive quality,and these varieties can be chosen in production as the pollination varieties for Qingxiang pear,followed by Cuilu and Xishui.

关键词： Qingxiang pear Pollination Fruit quality

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ISA总线实现即插即用技术的方法

情报理论与实践 1998年第4期21卷 231-233页

作者：蒋国强国防科工委指挥技术学院

ＩＳＡ总线实现即插即用技术的方法蒋国强（国防科工委指挥技术学院北京１０１４０７ＡｂｓｔｒａｃｔＴｈｅｍｅｔｈｏｄｔｏｒｅａｌｉｚｅｔｈｅＰｌｕｇａｎｄＰｌａｙｆｕｎｃｔｉｏｎｏｆｔｈｅＩＳＡｂｕｓｉｓｄｉｓｃｕｓｅｄ... 详细信息

ＩＳＡ总线实现即插即用技术的方法蒋国强（国防科工委指挥技术学院北京１０１４０７ＡｂｓｔｒａｃｔＴｈｅｍｅｔｈｏｄｔｏｒｅａｌｉｚｅｔｈｅＰｌｕｇａｎｄＰｌａｙｆｕｎｃｔｉｏｎｏｆｔｈｅＩＳＡｂｕｓｉｓｄｉｓｃｕｓｅｄｉｎｔｅｒｍｓｏｆｉｔｓＰｌｕｇａ...

关键词： ISA总线即插即用技术微机系统总线

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机会不均等:收入分配失衡的经济学解析

财经科学 2012年第7期 95-102页

作者：姜国强贵州财经大学经济学院

改革开放以来,我国经济社会发展取得了巨大的成就,然而,伴随着经济增长,收入差距的不断扩大,分配不公现象日益严峻。本文分析了收入分配差距存在的合理性,审视了当前我国收入分配的状况及特征,在此基础上提出机会不均等是收入差距产生... 详细信息

改革开放以来,我国经济社会发展取得了巨大的成就,然而,伴随着经济增长,收入差距的不断扩大,分配不公现象日益严峻。本文分析了收入分配差距存在的合理性,审视了当前我国收入分配的状况及特征,在此基础上提出机会不均等是收入差距产生的根本原因,必须深化收入分配制度改革,才能从根本上解决收入分配不公的问题。

关键词：机会不均等收入分配收入差距

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经济发展方式转变的结构失衡与矫正

财经科学 2010年第11期 48-56页

作者：姜国强四川大学经济学院

当前我国经济发展面临结构失衡的困境,需求结构、国民收入分配、城乡结构、产业结构等都处于非均衡状态。经济结构的失衡降低了资源配置效率,制约了经济发展方式的根本转变。要保持经济的长期稳定和健康发展,必须调整需求结构,促进经济... 详细信息

当前我国经济发展面临结构失衡的困境,需求结构、国民收入分配、城乡结构、产业结构等都处于非均衡状态。经济结构的失衡降低了资源配置效率,制约了经济发展方式的根本转变。要保持经济的长期稳定和健康发展,必须调整需求结构,促进经济发展由主要依靠投资、出口拉动向依靠消费、投资、出口协调拉动转变。同时要加快调整国民收入分配结构、城乡结构和产业结构,减少结构摩擦,优化资源配置,促进经济发展方式的根本转变。

关键词：经济发展方式结构调整需求结构收入分配

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经济增长方式转变的逆向制度安排与矫正

现代经济探讨 2010年第11期 62-65页

作者：姜国强四川大学经济学院

目前我国的投资、消费和出口处于非均衡状态。大量制度安排,如政绩考核、城乡制度差异、财政支出制度、收入分配制度、外贸体制等存在逆向效应,严重阻碍经济增长方式的转变。因此必须矫正现有的逆向制度安排,保持适当的投资和出口规模,... 详细信息

目前我国的投资、消费和出口处于非均衡状态。大量制度安排,如政绩考核、城乡制度差异、财政支出制度、收入分配制度、外贸体制等存在逆向效应,严重阻碍经济增长方式的转变。因此必须矫正现有的逆向制度安排,保持适当的投资和出口规模,同时努力扩大消费,使消费、出口、投资协调驱动,实现经济增长方式的根本转变。

关键词：经济增长方式转变逆向制度安排制度矫正

TILLING platforms for rice and tobacco

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TILLING platforms for rice and tobacco