Effect of nerve growth factor on chronic peripheral neuropathy in rats induced by 1-bromopropane
10.3760/cma.j.issn.1001-9391.2017.07.005
- VernacularTitle: 神经生长因子对1-溴丙烷致大鼠周围神经损害的效果
- Author:
Jiayan WU
1
;
Jingbo ZHANG
;
Weijie CHEN
;
Daoyuan SUN
Author Information
1. Dept of Toxicology, Shanghai Pulmonary Hospital, Tongji University, Shanghai 200433, China
- Publication Type:Journal Article
- Keywords:
1-Bromopropane;
Peripheral nervous system diseases;
Nerve growth factor
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2017;35(7):497-500
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To observe the effect of nerve growth factor (NGF) and Mecobalamin on chronic peripheral neuropathy in rats induced by 1-bromopropane.
Methods:36 male SD rats were exposed to 1-bromopropane vapor at concentrations of 4 000 mg/m3, 6 hours per day, 5 days per week for 12 weeks. The rats were randomed divided into 4 groups, and treated by Mecobalamin for 300 μg/kg qd, NGF for 40 μg/kg qd, Mecobalamin+NGF with the dose as mentioned above, respecively. The control group were fed in normal condition. The changes of Sciatic nerve conduction velocity (NCV) , electromyography (EMG) and pathology were observed 30 days later.
Results:The nerve conduction velocity were decreased in all the rats. Compared with the control group, the motor nerve conduction velocity (MCV) was improved in group Mecobalamin and group Mecobalamin+NGF, The difference was statistically significant, as the sensory nerve conduction velocity (SCV) was improved only in group Mecobalamin+NGF. Sciatic nerve biopsy observed by electron microscope showed that myelinated nerve fibers were obvious swelling, lamellar separation, partial myelin vacuolization, and axonal degeneration. After treatment with exogenous nerve growth factor, the number and severity of damaged nerve fibers were restored.
Conclusion:Exogenous nerve growth factor contributes to the recovery of peripheral nerve damage induced by 1-bromopropane.
