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Sympathetic hyperinnervation in myofascial trigger points.

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机构： [1]Department of Anesthesiology, Hainan Province Hospital of Traditional Chinese Medicine, Haikou, Hainan, China [2]Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China [3]Department of Orthopaedics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China

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关键词： Myofascial pain syndrome Sympathetic nervous system Sympathetic remodeling Taut band

摘要：

To evaluate the local distribution and activity of sympathetic nerves in myofascial trigger points (MTrPs) and explore the pathological mechanism of myofascial pain syndrome (MPS) using a rat model of disease. MPS was modeled in the model group (MG) by a combination of blunt trauma and eccentric exercise in Sprague-Dawley rats (n = 8). Eight rats were randomly assigned to the control group (CG). Histopathology was applied to detect the local conditions of the MTrPs. Tyrosine hydroxylase (TH), nerve growth factor (NGF), and norepinephrine (NE) were detected in the MTrPs to evaluate sympathetic remodeling. Muscle fiber rupture, atrophy and shape irregularity were universally observed in the MTrPs. TH expression was significantly increased in the MG, as detected by immunofluorescence, and NGF and TH expression was also higher in MTrPs in the MG than in MTrPs in the CG, as determined by immunohistochemistry. Furthermore, the expression of NE was significantly increased in MTrPs, as determined by ELISA. There was sympathetic hyperinnervation in MTrPs, which could partially explain the symptoms of MTrPs and is an interesting and useful new perspective regarding the diagnosis and treatment of MPS. The sympathetic nerves in MTrPs are remodeled, leading to sympathetic hyperinnervation. Sympathetic hyperinnervation can partially explain the symptoms of MPS. The pathological mechanism of sympathetic hyperinnervation may be a new perspective for the diagnosis and treatment of MPS. Copyright © 2020 Elsevier Ltd. All rights reserved.

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出版当年[2019]版：

大类 | 4 区医学

小类 | 4 区医学：研究与实验

最新[2025]版：

大类 | 4 区医学

小类 | 4 区医学：研究与实验

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第一作者机构： [1]Department of Anesthesiology, Hainan Province Hospital of Traditional Chinese Medicine, Haikou, Hainan, China

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通讯机构： [2]Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China [*1]Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital, Southern Medical University, No.183, Zhongshan Avenue West, Tianhe District, Guangzhou 510630, China

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