1.中山大学中山医学院生理教研室//中山大学疼痛研究中心,广东 广州 510080
2.中山大学孙逸仙纪念医院康复医学科, 广东 广州 510120
唐源,硕士生,研究方向:慢性疼痛的机制研究,E-mail:tangy225@mail2.sysu.edu.cn
收稿:2022-01-11,
纸质出版:2022-03-20
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唐源,金冬梅,揭英桃等.表没食子儿茶素没食子酸酯缓解高频刺激诱导的雌性小鼠慢性原发性疼痛[J].中山大学学报(医学科学版),2022,43(02):221-228.
TANG Yuan,JIN Dong-mei,JIE Ying-tao,et al.Intrathecal Injection of (-)-Epigallocatechin Gallate (EGCG) Alleviates Chronic Primary Pain Induced by High-frequency Stimulation in Female Mice[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(02):221-228.
唐源,金冬梅,揭英桃等.表没食子儿茶素没食子酸酯缓解高频刺激诱导的雌性小鼠慢性原发性疼痛[J].中山大学学报(医学科学版),2022,43(02):221-228. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0207.
TANG Yuan,JIN Dong-mei,JIE Ying-tao,et al.Intrathecal Injection of (-)-Epigallocatechin Gallate (EGCG) Alleviates Chronic Primary Pain Induced by High-frequency Stimulation in Female Mice[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(02):221-228. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0207.
目的
2
初步探究表没食子儿茶素没食子酸酯(EGCG)对高频刺激(HFS)诱导雌性小鼠慢性原发性疼痛的镇痛作用及其机制。
方法
2
采用10 V 的HFS(波宽0.5 ms,100 Hz,4串,每串持续1 s,间隔10 s)左后肢坐骨神经建立雌性小鼠慢性原发性疼痛模型。将小鼠随机分为假手术组、溶剂(生理盐水)+ HFS组、不同浓度EGCG + HFS组(每组4~5只)。手术前1 h,鞘内注射10 μL溶剂或EGCG(10、20、50、200 μmol/L)。采用后爪机械撤足阈值(PWT)和镇痛效率评价EGCG的治疗效果。最后用免疫荧光法检测腰段脊髓蛋白表达,探讨其可能的作用机制。
结果
2
与溶剂HFS组比较,EGCG鞘内注射剂量依赖性缓解雌性小鼠HFS引起的机械痛敏,其最大镇痛效率达84.95%。EGCG还可阻断疼痛雌性小鼠同侧腰段脊髓背角c-Fos(神经元兴奋性标记物)阳性神经元数量以及降钙素基因相关肽(CGRP
+
)终末、Iba1(小胶质细胞标记物)、GFAP(星形胶质细胞标记物)表达的增加。
结论
2
鞘内注射EGCG可通过抑制脊髓背角突触前CGRP终末增加、突触后神经元兴奋性以及胶质细胞激活,对HFS诱导的慢性原发性疼痛产生镇痛作用。
Objective
2
To investigate the analgesic effect and its mechanism of (-)-gallocatechin gallate (EGCG) on high-frequency stimulation (HFS)-induced chronic primary pain in female mice.
Methods
2
The model of chronic primary pain in female mice were established by HFS of sciatic nerve in left hind limb at 10 V (100 Hz, 0.5 ms, 4 trains of 1-s duration at 10-s intervals). The mice were randomly divided into sham operation group, vehicle (saline) + HFS group, different concentrations of EGCG + HFS groups (4~5 mice in each group). 10 μL EGCG (10, 20, 50, 200 μmol/L) or vehicle was injected intrathecally 1 h before surgery. The therapeutic effect of EGCG was evaluated by paw withdrawal threshold (PWT) and analgesic efficiency. Immunofluorescence of lumbar spinal cord was used to evaluate the possible mechanisms.
Results
2
Compared with vehicle HFS group, intrathecal administration of EGCG alleviated HFS-induced mechanical allodynia in a dose-dependent manner, and the maximum analgesic efficiency was 84.95%. EGCG also blocked the increases in c-Fos (a marker for neuronal excitability) positive neurons and the expressions of calcitonin gene-related peptide (CGRP
+
) terminals, Iba1 (a marker for microglia) and GFAP (a marker for astrocytes) in the ipsilateral spinal dorsal horn.
Conclusion
2
Intrathecal injection of EGCG exerts an analgesic effect against HFS-induced chronic primary pain, mediated by inhibiting the increases in presynaptic CGRP
+
terminals, postsynaptic neuronal excitability and glial activation in the spinal dorsal horn.
Cohen SP , Vase L , Hooten WM . Chronic pain: an update on burden, best practices, and new advances [J]. Lancet , 2021 , 397 ( 10289 ): 2082 - 2097 .
华洁 , 王丽娜 , 金晓红 , 等 . 慢性疼痛患者伴发抑郁焦虑情绪的观察及相关性分析 [J]. 广东医学 , 2019 , 40 ( 20 ): 2853 - 2856 .
Hua J , Wang LN , Jin XH , et al . Observation and correlation analysis of depression and anxiety in patients with chronic pain [J]. Guangdong Med J , 2019 , 40 ( 20 ): 2853 - 2856 .
Nicholas M , Vlaeyen JWS , Rief W , et al . The IASP classification of chronic pain for ICD-11: chronic primary pain [J]. Pain , 2019 , 160 ( 1 ): 28 - 37 .
Zhou LJ , Peng J , Xu YN , et al . Microglia are indispensable for synaptic plasticity in the spinal dorsal horn and chronic pain [J]. Cell Rep , 2019 , 27 ( 13 ): 3844 - 3859 . e6.
Ding S , Xu S , Fang J , Jiang H . The protective effect of polyphenols for colorectal cancer [J]. Front Immunol , 2020 , 11 : 1407 .
Yamagata K . Protective effect of epigallocatechin gallate on endothelial disorders in atherosclerosis [J]. J Cardiovasc Pharmacol , 2020 , 75 ( 4 ): 292 - 298 .
Gonçalves PB , Sodero ACR , Cordeiro Y . Green tea epigallocatechin-3-gallate (EGCG) targeting protein misfolding in drug discovery for neurodegenerative diseases [J]. Biomolecules , 2021 , 11 ( 5 ): 767 .
Negah SS , Ghazavi H , Vafaee F , et al . The potential role of green tea and its main constituent (epigallocatechin-3-gallate) in pain relief: a mechanistic review [J]. Curr Drug Discov Technol , 2021 , 18 ( 6 ): e130921189586 .
Choi JI , Kim WM , Lee HG , et al . Role of neuronal nitric oxide synthase in the antiallodynic effects of intrathecal EGCG in a neuropathic pain rat model [J]. Neurosci Lett , 2012 , 510 ( 1 ): 53 - 57 .
An SS , Kim YO , Park CH , et al . Antiallodynic effect of intrathecal epigallocatechin-3-gallate due to suppression of reactive oxygen species [J]. Korean J Anesthesiol , 2014 , 67 ( 2 ): 123 - 128 .
Kuang X , Huang Y , Gu HF , et al . Effects of intrathecal epigallocatechin gallate, an inhibitor of toll-like receptor 4, on chronic neuropathic pain in rats [J]. Eur J Pharmacol , 2012 , 676 ( 1-3 ): 51 - 56 .
Bosch-Mola M , Homs J , Álvarez-Pérez B , et al . (-)-Epigallocatechin-3-Gallate antihyperalgesic effect associates with reduced CX3CL1 chemokine expression in spinal cord [J]. Phytother Res , 2017 , 31 ( 2 ): 340 - 344 .
Renno WM , Al-Maghrebi M , Al-Banaw A . (-)-Epigallocatechin-3-gallate (EGCG) attenuates functional deficits and morphological alterations by diminishing apoptotic gene overexpression in skeletal muscles after sciatic nerve crush injury [J]. Naunyn Schmiedebergs Arch Pharmacol , 2012 , 385 ( 8 ): 807 - 822 .
Krupkova O , Sekiguchi M , Klasen J , et al . Epigallocatechin 3-gallate suppresses interleukin-1beta-induced inflammatory responses in intervertebral disc cells in vitro and reduces radiculopathic pain in rats [J]. Eur Cell Mater , 2014 , 28 : 372 - 386 .
Grace PM , Tawfik VL , Svensson CI , et al . The neuroimmunology of chronic pain: from rodents to humans [J]. J Neurosci , 2021 , 41 ( 5 ): 855 - 865 .
Fitzcharles MA , Cohen SP , Clauw DJ , et al . Nociplastic pain: towards an understanding of prevalent pain conditions [J]. Lancet , 2021 , 397 ( 10289 ): 2098 - 2110 .
Yatziv SL , Devor M . Suppression of neuropathic pain by selective silencing of dorsal root ganglion ectopia using nonblocking concentrations of lidocaine [J]. Pain , 2019 , 160 ( 9 ): 2105 - 2114 .
Rappaport HZ , Devor M . Trigeminal neuralgia: the role of self-sustaining discharge in the trigeminal ganglion [J]. Pain , 1994 , 56 ( 2 ): 127 - 138 .
Liu XG , Zhou LJ . Long-term potentiation at spinal C-fiber synapses: a target for pathological pain [J]. Curr Pharm Des , 2015 , 21 ( 7 ): 895 - 905 .
Kada T , Kaneko K , Matsuzaki S , et al . Detection and chemical identification of natural bio-antimutagens: a case of the green tea factor [J]. Mutat Res , 1985 , 150 ( 1-2 ): 127 - 132 .
Weinreb O , Amit T , Mandel S , et al . Neuroprotective molecular mechanisms of (-)-epigallocatechin-3-gallate: a reflective outcome of its antioxidant, iron chelating and neuritogenic properties [J]. Genes Nutr , 2009 , 4 ( 4 ): 283 - 296 .
Li Q , Zhang X . Epigallocatechin-3-gallate attenuates bone cancer pain involving decreasing spinal tumor necrosis factor-alpha expression in a mouse model [J]. Int Immunopharmacol , 2015 , 29 ( 2 ): 818 - 823 .
Leong DJ , Choudhury M , Hanstein R , et al . Green tea polyphenol treatment is chondroprotective, anti-inflammatory and palliative in a mouse post-traumatic osteoarthritis model [J]. Arthritis Res Ther , 2014 , 16 ( 6 ): 508 .
Renno WM , Al-Khaledi G , Mousa A , et al . (-)-Epigallocatechin-3-gallate (EGCG) modulates neurological function when intravenously infused in acute and, chronically injured spinal cord of adult rats [J]. Neuropharmacology , 2014 , 77 : 100 - 119 .
Kim HY , Lee KY , Lu Y , et al . Mitochondrial Ca(2+) uptake is essential for synaptic plasticity in pain [J]. J Neurosci , 2011 , 31 ( 36 ): 12982 - 12991 .
Peng J , Yi MH , Jeong H , et al . The voltage-gated proton channel Hv1 promotes microglia-astrocyte communication and neuropathic pain after peripheral nerve injury [J]. Mol Brain , 2021 , 14 ( 1 ): 99 .
Tachibana H , Koga K , Fujimura Y , et al . A receptor for green tea polyphenol EGCG [J]. Nat Struct Mol Biol , 2004 , 11 ( 4 ): 380 - 381 .
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