title: A new model for the study of neuropathic pain after brachial plexus injury.
abstract: The study was to introduce a new and reliable behavioral model of upper trunk of brachial plexus avulsion for the study of persistent neuropathic pain. 60 rats were divided into three groups randomly: upper trunk of brachial plexus avulsion (UTBPA) group (20), global brachial plexus avulsion (GBPA) group (20), and sham- operated group (20). The animals were tested for behavioral responsiveness before surgeries and 3, 7, 14, 21, 28, 56, 84days after surgeries. The injured level of spinal cord was resected and the sections were processed for GFAP (astrocyte) and Iba1 (microglia) immunohistochemistry 3 weeks after surgeries. The UTBPA group developed significant signs both of mechanical and cold hypersensitivity, which matched the immunohistochemistry result, as well as the nature of avulsion was close to the clinical type of injury, the UTBPA group could be used as a suitable and effective persistent neuropathic pain model following brachial plexus injury.
authors.affiliation: Department of Hand Surgery, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China.
authors.forename: Yuzhou
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Hand Surgery, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China.
authors.forename: Le
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Hand Surgery, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China.
authors.forename: Chong
authors.initials: C
authors.lastname: Meng
authors.affiliation: Department of Hand Surgery, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China.
authors.forename: Yingjie
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Department of Hand Surgery, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China; Key Laboratory of Hand Reconstruction, Ministry of Health, Shanghai, China; Shanghai Key Laboratory of Peripheral Nerve and Microsurgery, Shanghai, China. Electronic address: lyz41_2000@sina.com.
authors.forename: Jie
authors.initials: J
authors.lastname: Lao
authors.affiliation: Department of Hand Surgery, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhao
mesh_terms: D000818:Animals; D001253:Astrocytes / Q000473:pathology; D001917:Brachial Plexus / Q000293:injuries / Q000473:pathology*; D020516:Brachial Plexus Neuropathies / Q000473:pathology*; D003080:Cold Temperature; D004195:Disease Models, Animal; D007150:Immunohistochemistry; D008297:Male; D017628:Microglia / Q000473:pathology*; D009437:Neuralgia / Q000209:etiology*; D010812:Physical Stimulation; D051381:Rats; D017207:Rats, Sprague-Dawley; D013116:Spinal Cord / Q000473:pathology*
keywords: Allodynia; Astrocyte; Brachial plexus injury; Cold allodynia; Mechanical; Microglia; Neuropathic pain