Dataset Information

A quantitative evaluation of sciatic nerve stiffness after compression by shear wave elastography in diabetic rats.

ABSTRACT:

Background

Our study investigates the feasibility of using quantitative evaluation for nerve entrapment visualization by shear wave elastography (SWE) in diabetic rats.

Methods

A total of 24 male Sprague-Dawley (SD) rats were included in this study. Before injection of streptozotocin (STZ), the experimental groups were assigned as the diabetic nerve compression (DNC) group (DNC, n=18) and the control group (CON, n=6). The DNC model was created by wrapping a silicone tube around the nerve, and then the DNC group was divided into the DNC 2-week (DNC2W, n=6), 4-week (DNC4W, n=6), and 8-week (DNC8W, n=6) groups according to the different duration time of sciatic nerve compression. The nerve stiffness was detected by SWE. Meanwhile, motor nerve conduction velocity (MNCV) was detected. These 2 indicators and histology of sciatic nerves were compared across the different groups.

Results

The stiffness of the nerve depicted by SWE at the compression site increased markedly along with the duration time of compression (P<0.01). The MNCV decreased along with the duration time of nerve compression (P<0.05). The nerve stiffness depicted by SWE was negatively correlated with MNCV (r=-0.926; P<0.01). Myelinated fiber density significantly decreased as the duration time of nerve compression increased (P<0.01). Some differences were found between DNC4W and DNC8W groups, and CON and DNC2W groups (P<0.05) in average axon diameter, myelin sheath thickness, and g ratio.

Conclusions

The increased values of SWE, along with the increased duration of nerve compression, could reflect the severity of nerve entrapment in diabetic rats. Therefore, SWE may be used as a noninvasive and effective method to quantitatively evaluate the severity of diabetic nerve entrapment.

SUBMITTER: Li D

PROVIDER: S-EPMC7327375 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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A quantitative evaluation of sciatic nerve stiffness after compression by shear wave elastography in diabetic rats.

Li Diancheng D Zhu Jiaan J Liu Fang F Li Bing B Liu Feifei F Li Wenxue W

Annals of translational medicine 20200601 11

<h4>Background</h4>Our study investigates the feasibility of using quantitative evaluation for nerve entrapment visualization by shear wave elastography (SWE) in diabetic rats.<h4>Methods</h4>A total of 24 male Sprague-Dawley (SD) rats were included in this study. Before injection of streptozotocin (STZ), the experimental groups were assigned as the diabetic nerve compression (DNC) group (DNC, n=18) and the control group (CON, n=6). The DNC model was created by wrapping a silicone tube around th ...[more]

PMID: 32617302

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Dataset Information

A quantitative evaluation of sciatic nerve stiffness after compression by shear wave elastography in diabetic rats.

Background

Methods

Results

Conclusions

Publications

A quantitative evaluation of sciatic nerve stiffness after compression by shear wave elastography in diabetic rats.

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