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骨组织超微结构
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  bone microstructure
     ② The tibia bone microstructure was observed under electron microscope.
     ②大鼠胫骨骨组织超微结构采用电镜下观察。
短句来源
     MAIN OUTCOME MEASURES ①The tibia bone microstructure ② bone morphogenetic protein-4 mRNA expression at callus and the surrounding parenchyma.
     主要观察指标:①两组大鼠胫骨骨组织超微结构观察结果。 ②骨痂和软组织骨形态发生蛋白4表达结果。
短句来源
     ① Observation of the tibia bone microstructure at 28 days after tibia fracture osseous callus and ostein fibers were found arranged densely in control group. Osteocytes small with fewer cytoplasts were observed in osseous lacuna but osteoclasts were found surrounding small-sized bone trabecula.
     ①两组大鼠胫骨骨组织超微结构观察结果:骨折28d以后,对照组骨性骨痂、骨胶原纤维性排列致密,骨陷窝中见骨细胞,体积小、胞质少,但体积小骨小梁周围见破骨细胞。
短句来源
  “骨组织超微结构”译为未确定词的双语例句
     OBJECTIVE: To observe the ultrastructure of bone tissue of secondary osteoporosis after spinal cord injury and the change of serum biochemical indexes, to analyze the suffered condition and injured degree of the bones above and below the level of the trauma.
     目的:观察脊髓损伤后继发骨质疏松的骨组织超微结构、血液生化改变情况,分析损伤平面上下骨质受累情况和程度。
短句来源
     The ultrastructure and vitodynamics study of blood vessel and bone tissue on the long period of preservation at ultra-low temperature
     长时段深低温保存血管和骨组织超微结构观察及力学研究
短句来源
     Objective: To investigate the effect of the ultra structure of bone tissue of SD rat in different ischemic period.
     目的:探讨缺血对骨组织超微结构的影响,为吻合血管同种异体骨保存移植提供依据。
短句来源
  相似匹配句对
     Advances in tissue engineering of bone
     组织工程研究
短句来源
     (4) lamellar bone formation.
     (4)组织成熟期。
短句来源
     Organization
     组织
短句来源
     A Study on the Ultrastructure of Chondroblastoma
     软骨母细胞瘤的超微结构
短句来源
     Study on Ultrastructure of Benign and Malignant Pheochromocytoma
     嗜铬细胞瘤的超微结构
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  bone microstructure
For measurements at the calcaneus, it is evident that bone microstructure is the key determinant of QUS variables obtained.
      
New technologies for studying bone microstructure and matrix composition, merging with sophisticated biomechanical assessments, are advancing our ideas regarding bone "damageability" and its effects over time.
      
The role of osteocytes and bone microstructure in preventing osteoporotic fractures
      
Bone microstructure may play an important role in these processes by diverting and arresting propagating microcracks and so prevent fracture failure.
      
Recently developed in?vivo micro-computed tomographic (CT) scanners offer the possibility to study such effects on bone microstructure in rats.
      
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Objective:The aim of this study was to explore ultrastructural characters of the newly formed bone in the correction of cleft palate (CP) bone defect by distraction osteogenesis (DO).Methods: The CP experimental animal models (12 cats) were established surgically, and were divided randomly into the experimental group (10 cats), in which the hard palate bone defects were corrected with DO procedure at the rate of 0.4 mm×2/day. The specimen retrieval with euthanasia was carried out at 2, 4, 6, 8, 12 weeks after...

Objective:The aim of this study was to explore ultrastructural characters of the newly formed bone in the correction of cleft palate (CP) bone defect by distraction osteogenesis (DO).Methods: The CP experimental animal models (12 cats) were established surgically, and were divided randomly into the experimental group (10 cats), in which the hard palate bone defects were corrected with DO procedure at the rate of 0.4 mm×2/day. The specimen retrieval with euthanasia was carried out at 2, 4, 6, 8, 12 weeks after completion of distraction. Ultrastructural study was then performed; the experimental control group (2 cats) was kept for 6 weeks before euthanasia without any correction, the other extra 2 cats were used as the negative control.Results: New bone formation appeared in early 2 weeks. Exclusively intramembranous bone formation was observed in all specimens. The remodeling activities were keep observed throughout the period of study, and the bone structure matured gradually till 12 weeks after the completion of DO. No repair was observed in experimental control group.Conclusion: The reconstruction of CP bone defect by means of DO could get active intramembranous bone formation and remodeling, which adapted to normal functional activities.\;

目的 :观察不同时间间期牵张生成的新骨组织的超微结构特征 ,探讨新骨生成的规律。方法 :建立 12只动物的人工腭裂实验模型 ,实验组动物 10只 :应用牵张成骨术 ,以每日 2次 ,每次 0 4mm的速度和恒定的方向整复其腭部软硬组织缺损 ,至裂隙完全封闭。于术后固定期第 2、4、6、8及 12周分别安乐处死 2只实验动物 ,切取标本后于扫描电镜下观察 ,并与实验对照组及空白对照组 (动物各 2只 )观察结果对比。结果 :第 2周时 ,牵张区以大量沿牵张方向排列的胶原纤维束为主 ,成纤维细胞大量增殖 ,新生骨小梁钙化程度低。第 4~ 6周时 ,成骨活动极其活跃 ,骨小梁较致密 ,其表面密集排列成骨细胞。新骨呈“蜂巢样”结构。第 8~ 12周时 ,骨小梁结构逐渐钙化成熟。实验对照组裂隙创缘处无明显新骨形成。结论 :应用牵张成骨术矫治腭裂骨质缺损 ,以原位产生新骨 ,增加骨量的方式推移骨运送盘封闭腭裂裂隙。术后早期即有膜内成骨的新骨形成 ,并最终改建成熟为适应正常生理功能需要的骨质结构

Purpose To explore whether ultrasonic irradiation can shorten the process of osseous tissue decalcification during the sample preparation for electron microscopy. Methods The fixed samples immersed in the decalcifying solution containing disodium ethylene diamino tetraacetic acid (EDTA·Na 2)134 mmol/L and Naoh 70 mmol/L were irradiated by ultrasonic waves at a frequency of 21 kHz for 20 min per day.The irradiation continued for 7 days.The samples immersed in the same decalcifying solution for 20 days without...

Purpose To explore whether ultrasonic irradiation can shorten the process of osseous tissue decalcification during the sample preparation for electron microscopy. Methods The fixed samples immersed in the decalcifying solution containing disodium ethylene diamino tetraacetic acid (EDTA·Na 2)134 mmol/L and Naoh 70 mmol/L were irradiated by ultrasonic waves at a frequency of 21 kHz for 20 min per day.The irradiation continued for 7 days.The samples immersed in the same decalcifying solution for 20 days without using the ultrasonic irradiation were used as the control.The ultrastructure of the osseous tissue in the two groups were observed under transmission electron microscope. Results In the sections irradiated by the ultrasonic waves,there were no deposit of inorganic salt crystals shown on bone matrices,and the ultrastructure was preserved well.It seemed no difference from that of the control. Conclusions Ultrasonic irradiation can shorten the decalcifying period.It was reduced to one third of the control in this study.

目的 探讨超声辐照能否加快骨组织电镜样品的脱钙过程。方法 固定后的样品浸入含 134mmol/L和NaOH 70mmol/L的脱钙液中 ,经 2 1kHz的超声波辐照 ,每天 2 0min共 7d。未经超声波处理的样品在脱钙液中浸泡 2 0d作为对照。在透射电镜下观察两组骨组织的超微结构。结果 经超声辐照的样品在骨基质中没有无机盐结晶残留 ,且超微结构保存良好 ,与对照组无差异。结论 超声辐照可使脱钙处理的时间大大缩短 ,仅为对照组的三分之一

Objective To study the influence of freezing temperature on ultrastructure and mechanical performance of SD big ratsbone.Methods The freezing temperature were selected as -45℃?-50℃?-55℃?-60℃?-65℃?-70℃.Frozen pretreated under each temperature and kept in liquid nitrogen for a week,the tibia of SD big rats were examined with HE dyeing and transmission electron microscopy;the mechanics testing group underwent an experimentation of press resisting and bend resisting after freezing pretreatment under ?-55℃ and...

Objective To study the influence of freezing temperature on ultrastructure and mechanical performance of SD big ratsbone.Methods The freezing temperature were selected as -45℃?-50℃?-55℃?-60℃?-65℃?-70℃.Frozen pretreated under each temperature and kept in liquid nitrogen for a week,the tibia of SD big rats were examined with HE dyeing and transmission electron microscopy;the mechanics testing group underwent an experimentation of press resisting and bend resisting after freezing pretreatment under ?-55℃ and keeping in liquid nitrogen for 18 days and 180 days each.Results Examination of transmission electron microscopy showed that the bone kept nuder -55℃ were indistinguishable from the control group.The ultrastructure were well preserved,excelling other groups of different temperature.The high point compressing intension of the bone in control group,18 days group,180 days group were (77 26±11 80) MPa,(76 02±15 00) MPa,(61 90±12 20) MPa and the maximum bend resisting intension were (44 60±10 54),(44 20±9 50),(20 01±7 58).Conclusion Frozen under -55℃ could preserve most part of the biological activity of the bone tissue;There were significant difference between the maximum bend resisting intension of control group and 180 days group.

目的 探讨冷冻温度对SD大鼠骨组织超微结构及力学性能的影响。方法 温度选择组分 - 4 5℃、 - 5 0℃、 - 5 5℃、- 6 0℃、 - 6 5℃和 - 70℃组 ,对SD大鼠胫骨进行上述温度的冷冻预处理 ,液氮保存一周 ,与对照组作HE染色和透射电镜 ;力学测试组用 - 5 5℃的冷冻预处理 ,液氮保存 18d组、 180d组 ,与对照组进行抗压和抗折实验。结果 电镜下 - 4 5℃组、- 6 5℃组、 - 70℃组部分骨细胞轻度水肿 ,骨细胞核有固缩现象 ,骨细胞膜不连续 ;- 5 0℃组、 - 5 5℃组和 - 6 0℃组骨组织超微结构得到较好保持。骨压缩强度极限 (MPa)对照组、 18d组、 180d组为 77 2 6± 11 80、 76 0 2± 15 0 0和 6 1 90± 12 2 0 ;股骨弯曲最大挠度 ,对照组 18d、 180d组为 4 4 6 0± 10 5 4、 4 4 2 0± 9 5 0和 2 0 0 1± 7 5 8。结论  - 5 5℃是骨组织冷冻预处理的最佳维持温度值。骨抗折挠度 ,对照组与 180d组有显著差异 (P <0...

目的 探讨冷冻温度对SD大鼠骨组织超微结构及力学性能的影响。方法 温度选择组分 - 4 5℃、 - 5 0℃、 - 5 5℃、- 6 0℃、 - 6 5℃和 - 70℃组 ,对SD大鼠胫骨进行上述温度的冷冻预处理 ,液氮保存一周 ,与对照组作HE染色和透射电镜 ;力学测试组用 - 5 5℃的冷冻预处理 ,液氮保存 18d组、 180d组 ,与对照组进行抗压和抗折实验。结果 电镜下 - 4 5℃组、- 6 5℃组、 - 70℃组部分骨细胞轻度水肿 ,骨细胞核有固缩现象 ,骨细胞膜不连续 ;- 5 0℃组、 - 5 5℃组和 - 6 0℃组骨组织超微结构得到较好保持。骨压缩强度极限 (MPa)对照组、 18d组、 180d组为 77 2 6± 11 80、 76 0 2± 15 0 0和 6 1 90± 12 2 0 ;股骨弯曲最大挠度 ,对照组 18d、 180d组为 4 4 6 0± 10 5 4、 4 4 2 0± 9 5 0和 2 0 0 1± 7 5 8。结论  - 5 5℃是骨组织冷冻预处理的最佳维持温度值。骨抗折挠度 ,对照组与 180d组有显著差异 (P <0 0 1) ,表明骨的脆性增加。

 
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