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   神经再生 在 生物医学工程 分类中 的翻译结果: 查询用时:0.058秒
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神经再生     
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  nerve regeneration
Tissue engineering and peripheral nerve regeneration (III)
      
The process of the nerve regeneration was investigated by histological assessment, electrophysiological examination, and determination of wet weight recovery rate of the gastrocnemius muscle.
      
At the conclusion of 12 weeks, proximal and distal end of nerves were anastomosed by nerve regeneration and the conduit vanished completely.
      
The results suggest that PDLLA conduits may serve for peripheral nerve regeneration and PDLLA is a sort of hopeful candidate for tissue engineering.
      
The first axons to grow very early in the course of nerve regeneration belong primarily to the phrenic nerve which is thus reinnervating some of the denervated shoulder muscles.
      
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  neural regeneration
Expression of neurofilament gene in spinal motoneurons during neural regeneration
      
Preservation of the basal lamina is considered to be the essential factor in allowing neural regeneration in these circumstances.
      
In multiple sclerosis and experimental autoimmune encephalomyelitis levels of lipocortins are raised, suggesting their involvement in the recovery from an immunological insult or in neural regeneration.
      
The newly developed heterotopic larynx transplant model allows studies of transplant viability, rejection mechanisms and neural regeneration and functional recovery to be performed with minimal animal morbidity and lowered research costs.
      
Planarian GSK3s are involved in neural regeneration
      
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  neurotization
It was found that this chronic stress induced a decline in the locomotor, exploratory, and emotionality parameters of rats subjected to 14 days of neurotization.
      
Neurotization with 3 ipsilateral intercostal nerves was carried out in groups 1, 2 and 3.
      
Neurotization for restoration of arm function in complete cervical root avulsion
      
The results of the present study suggest that harvesting of a nerve graft by the stripper does not cause major injuries to the graft and, therefore, successful neurotization of the graft is not impaired.
      
Since each system contains a number of antagonists, a mutual blocking that is the result of the heteromorphous neurotization occurs, producing the symptoms of a residual paresis, although these "weak" muscles are well reinnervated.
      
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  regeneration of nerve
The regeneration of nerve fibres in pigs was studied three months after transsection and end-to-end suture of the dorsal and ventral spinal nerve roots L 5 and S 1.
      
The regeneration of nerve fibres in pigs was studied three months after transsection and end-to-end suture of the dorsal and ventral spinal nerve roots L 5 and S 1.
      
On the 7th day, mitosis of Schwann cells was observed and on the 250 th day, myelinated fibres were noticeably decreased in numbers, with regeneration of nerve fibres and an increase of collagen in the intercellular spaces.
      
Pathological alterations indicating demyelination, remyelination and regeneration of nerve fibers were occasionally observed.
      
Reappearance of epidermal fibers was delayed compared to the regeneration of nerve fibers in the sciatic nerve.
      
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  其他


Due to lack of adequate method of quantitative estimation of nerve biomechanical properties,it is very difficult to find out a method for quantitative estimation of nerve biomechanies for evaluating nerve regeneration and and functional recovery.In this paper,we presented our investigation on biomechanical properties of peripheral nerve in rats using method and theory of biomechanics and including relation of stress and strain tensile strength,hysteresis,stress relaxation and creep.The result showed that some...

Due to lack of adequate method of quantitative estimation of nerve biomechanical properties,it is very difficult to find out a method for quantitative estimation of nerve biomechanies for evaluating nerve regeneration and and functional recovery.In this paper,we presented our investigation on biomechanical properties of peripheral nerve in rats using method and theory of biomechanics and including relation of stress and strain tensile strength,hysteresis,stress relaxation and creep.The result showed that some biomechanical properties of peripheral nerve in rats were similar to those of other biological soft tissues,yet the data showed an apparent an quantitative difference.The tensile strength of rat nerve was higher than that of vessel,muscle etc,and before the break of tensile nerve tissue,its strain ranges Were wider than those of vessel,muscle and tendon.Therefore,the experimental data served as valuable reference for repair of injured nerve in surgical operations.

目前对神经的生物力学性能找不到定量的依据,而受损神经的再生及功能恢复过程需要有客观的指标给予评价。本文用生物力学的理论和方法测定了大白鼠周围神经的力学性质。其中包括应力-应变关系,抗张强度,滞后,应力松驰与蠕变现象。结果表明大白鼠周围神经的力学性质与其他生物软组织相似,但定量上有较大区别。大白鼠周围神经的抗张强度高于血管,肌肉等生物软组织,其拉伸时组织破坏前的应变范围宽于血管、肌肉、肌腱。为神经损伤桥接术的研究提供了有益的参考。

Twnety-eight rectus femoris muscles in adult dogs divided into 2 groupswere grafted orthotopically with microneurovascular anastomosis. The FEP elec-tret was wound on transplant muscle after operation and on the opposite trans-piant muscle with the FEP membrane without static electricty was used as a con-trol. The observation time was 22 weeks. The results showed that the recovery of electromyographic signs was better, the action potential earlier found and themaximum contratile force in vivo 10 percent higher...

Twnety-eight rectus femoris muscles in adult dogs divided into 2 groupswere grafted orthotopically with microneurovascular anastomosis. The FEP elec-tret was wound on transplant muscle after operation and on the opposite trans-piant muscle with the FEP membrane without static electricty was used as a con-trol. The observation time was 22 weeks. The results showed that the recovery of electromyographic signs was better, the action potential earlier found and themaximum contratile force in vivo 10 percent higher in the electret group thanthose in the control group. In conclusion,the treatment using FEP electret sub-strate can improve peripheral nerve growth and reduce atrophic number of trans-ferred muscle.

本文用成年狗14条,随机分成对照组和驻极体治疗组,以狗的股直肌为实验模型,用TeflonFEP驻极体对失神经支配的移植肌肉的功能恢复作了研究。结果表明:应用驻极体后,移植肌肉的电生理指标明显优于对照组,新生动作电位提早出现,移植肌肉获得神经再支配的时间较对照组提前。驻极体具有促进神经再生,延缓移植肌萎缩,促进移植肌肉功能恢复的作用。

In order to investigate whether or not the ultrasound enhances the peripheral nerve regeneration and muscle reinnervation, we made a model for the peroneal nerve injury of Wistar rats with forceps and performed four days ultrasound therapy.Then we measured the contractile tension curve of extensor longus digitorum and observed the structure of the nerve and muscles by means of light microscopy,electromicroscopy and histochemistry.The study showed that the ultrasound therapy may promote the peripheral nerve regeneration...

In order to investigate whether or not the ultrasound enhances the peripheral nerve regeneration and muscle reinnervation, we made a model for the peroneal nerve injury of Wistar rats with forceps and performed four days ultrasound therapy.Then we measured the contractile tension curve of extensor longus digitorum and observed the structure of the nerve and muscles by means of light microscopy,electromicroscopy and histochemistry.The study showed that the ultrasound therapy may promote the peripheral nerve regeneration and muscle reinnervation.The mechanism is discussed in the article.

为探讨超声有否促进周围神经再生及肌肉神经再支配的作用,我们对大鼠腓神经实行钳夹损伤造模并进行超声治疗4天。通过测量趾长伸肌收缩张力曲线及对神经、肌肉标本进行光镜、电镜和组织化学检查,结果表明超声能促进周围神经再生及肌肉神经再支配。

 
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