title: Brain-derived neurotrophic factor expression in dorsal root ganglia of a lumbar spinal stenosis model in rats.
abstract: This study aimed to investigate the expression of brain-derived neurotrophic factor (BDNF) in dorsal root ganglia (DRG) of a rat model of lumbar spinal stenosis (LSS). Adult male rats were divided into the operation and sham operation groups. The operation group was comprised of the rat models of LSS. Walking distance and BDNF expression levels in DRG were measured in the two groups at different time points. The total BDNF protein levels and positive cell mean optical density (MOD) values in the operation group were significantly higher at each time point compared with that of the sham operation and preoperative control groups (P<0.05). The total BDNF protein levels and MOD values following sport in the operation group were significantly higher compared with those prior to sport (P<0.05). In the sham operation group, BDNF protein levels and MOD values before and after sport at each time point showed no significant differences than those of the operation group (P>0.05). Moreover, BDNF protein levels and MOD values in the operation group indicated a negative correlation with walking distance. The present study demonstrated that the expression of BDNF in rat models of LSS increased with time and was associated with a decrease in walking distance. BDNF was therefore important for the process of intermittent claudication caused by LSS.
authors.affiliation: Department of Spine, The Affiliated Lianyungang Hospital of Xuzhou Medical College, Lianyungang, Jiangsu 222000, P.R. China.
authors.forename: Qinliang
authors.initials: Q
authors.lastname: Li
authors.forename: Yi
authors.initials: Y
authors.lastname: Liu
authors.forename: Zhaoming
authors.initials: Z
authors.lastname: Chu
authors.forename: Jinchuan
authors.initials: J
authors.lastname: Chen
authors.forename: Fenglei
authors.initials: F
authors.lastname: Dai
authors.forename: Xiaorong
authors.initials: X
authors.lastname: Zhu
authors.forename: Ankang
authors.initials: A
authors.lastname: Hu
authors.forename: Cai
authors.initials: C
authors.lastname: Yun
mesh_terms: D000818:Animals; D019208:Brain-Derived Neurotrophic Factor / Q000378:metabolism*; D004195:Disease Models, Animal; D004797:Enzyme-Linked Immunosorbent Assay; D005727:Ganglia, Spinal / Q000378:metabolism* / Q000473:pathology / Q000503:physiopathology; D007150:Immunohistochemistry; D008159:Lumbar Vertebrae / Q000378:metabolism* / Q000473:pathology / Q000503:physiopathology; D008297:Male; D010805:Physical Conditioning, Animal; D051381:Rats; D017207:Rats, Sprague-Dawley; D013130:Spinal Stenosis / Q000378:metabolism* / Q000473:pathology / Q000503:physiopathology; D016138:Walking
chemical_list: D019208:Brain-Derived Neurotrophic Factor