Delaviz, Hamdollah, Faghihi, Abolfazel, Mohamadi, Jamshid, Roozbehi, Amrollah. (1391). Ultrastructural Changes in Spinal Motoneurons and Locomotor Functional Study after Sciatic Nerve Repair in Conduit Tube. , 15(4), 990-996. doi: 10.22038/ijbms.2012.4899
Hamdollah Delaviz; Abolfazel Faghihi; Jamshid Mohamadi; Amrollah Roozbehi. "Ultrastructural Changes in Spinal Motoneurons and Locomotor Functional Study after Sciatic Nerve Repair in Conduit Tube". , 15, 4, 1391, 990-996. doi: 10.22038/ijbms.2012.4899
Delaviz, Hamdollah, Faghihi, Abolfazel, Mohamadi, Jamshid, Roozbehi, Amrollah. (1391). 'Ultrastructural Changes in Spinal Motoneurons and Locomotor Functional Study after Sciatic Nerve Repair in Conduit Tube', , 15(4), pp. 990-996. doi: 10.22038/ijbms.2012.4899
Delaviz, Hamdollah, Faghihi, Abolfazel, Mohamadi, Jamshid, Roozbehi, Amrollah. Ultrastructural Changes in Spinal Motoneurons and Locomotor Functional Study after Sciatic Nerve Repair in Conduit Tube. , 1391; 15(4): 990-996. doi: 10.22038/ijbms.2012.4899

Ultrastructural Changes in Spinal Motoneurons and Locomotor Functional Study after Sciatic Nerve Repair in Conduit Tube

Iranian Journal of Basic Medical Sciences
مقاله 13، دوره 15، شماره 4، 2012، صفحه 990-996    اصل مقاله (401.29 K)
شناسه دیجیتال (DOI): 10.22038/ijbms.2012.4899
نویسندگان
Hamdollah Delaviz1؛ Abolfazel Faghihi2؛ Jamshid Mohamadi3؛ Amrollah Roozbehi* 1
1Cellular and Molecular Research Centre, Department of Anatomy, Faculty of Medicine, Yasouj University of Medical Sciences, Yasouj, Iran
2Department of Anatomy, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
3Department of Physiology, Faculty of Medicine, Yasouj University of Medical Sciences, Yasouj, Iran
چکیده
Objective(s)
Motor deficit and neuron degeneration is seen after nerve transection. The aim of this study is to determine whether a poled polyvinelidene fluoride (PVDF) tube with other supportive strategies can protect the neuronal morphology and motor function after sciatic nerve transaction in rats.
Materials and Methods
After transection of the left sciatic nerve in 60 male Wistar rats (200-250 g), the epineural group was sutured end to end. In the autograft rats, a 10 mm piece of sciatic nerve was rotated 180 °C and sutured back into the nerve gap. In the nerve guidance channel (NGC) group, polarized piezoelectric PVDF tube containing NGF and collagen gel was sutured in the gap. In control group sciatic nerve was removed (10 mm) without repair. After one, four and eight weeks, the L4-L6 spinal cord segment was removed for histological study using transmission electron microscope. Functional outcome was assessed using the Basso, Bresnahan and Beattie (BBB) locomotor scale at both four and eight weeks after the lesion.
Results
Chromatin condensation was seen after 4 weeks in the repair groups. Cell membrane shrinkage and mitochondrial degeneration was observed after 4 and 8 weeks respectively, in the autografted and NGC rats. In the control group, chromatin condensation, cell membrane shrinkage with mitochondrial degeneration and vacuolization of perikaryon was seen after 1, 4 and 8 weeks, respectively. At 56 days, the functional recovery of the epineural rats significantly increased in comparison to the other groups (P< 0.05).
Conclusion
The epineural suture has more efficacies, and NGC may be used as a proper substitute for autograft in nerve injury.
کلیدواژه‌ها
Motor Neuron؛ Rat؛ Recovery؛ Sciatic nerve
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