骨癌痛大鼠钠通道Nav1.8的表达与行为学变化
目的观察钠通道Nav1.8在Walker256乳腺癌细胞所致胫骨骨癌痛大鼠背根神经节(DRG)及丘脑中的表达变化,探讨Nav1.8与癌痛的相关性。方法将Wistar大鼠随机分为癌痛组(n=15)和假手术组(n=15)。在癌痛组大鼠胫骨内注入密度为107/m L的Walker256乳腺癌细胞,建立骨癌痛模型;假手术组在大鼠胫骨内注入相同体积的生理盐水。术后8、11、14、17、21 d评估机械性异常性疼痛和热痛觉过敏。造模21d进行影像学检查后,取其DRG及丘脑组织,荧光实时定量RT-PCR观察Nav1.8 mRNA在DRG和丘脑中的表达变化,免疫荧光观察Nav1.8蛋白在DRG中的表达。结果癌...
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Published in | 上海交通大学学报:医学版 Vol. 35; no. 4; pp. 511 - 515 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
2015
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Subjects | |
Online Access | Get full text |
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Summary: | 目的观察钠通道Nav1.8在Walker256乳腺癌细胞所致胫骨骨癌痛大鼠背根神经节(DRG)及丘脑中的表达变化,探讨Nav1.8与癌痛的相关性。方法将Wistar大鼠随机分为癌痛组(n=15)和假手术组(n=15)。在癌痛组大鼠胫骨内注入密度为107/m L的Walker256乳腺癌细胞,建立骨癌痛模型;假手术组在大鼠胫骨内注入相同体积的生理盐水。术后8、11、14、17、21 d评估机械性异常性疼痛和热痛觉过敏。造模21d进行影像学检查后,取其DRG及丘脑组织,荧光实时定量RT-PCR观察Nav1.8 mRNA在DRG和丘脑中的表达变化,免疫荧光观察Nav1.8蛋白在DRG中的表达。结果癌痛组大鼠术后各时间点出现了明显的机械性痛觉过敏,机械性缩足阈值与术前和假手术组比较,差异有统计学意义(P〈0.05);术后癌痛组热刺激缩足反射潜伏期无显著变化,与术前及假手术组比较,差异无统计学意义(P〉0.05)。Nav1.8 mRNA在手术侧DRG及手术对侧丘脑中的表达明显上调(P〈0.05);手术对侧DRG和同侧丘脑中的Nav1.8 mRNA与假手术组比较,差异无统计学意义(P〉0.05)。结论 Nav1.8的表达上调与大鼠骨癌痛的发生有一定关系。 |
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Bibliography: | JI Xiao-yan, ZHAO Xuan, CHENG Zhi-jun, FAN Zhi-dan( 1. Department of Anesthesiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China; 2. Department of Anesthesiology, Xinhua Hospital Chongming Branch, Shanghai Jiao Tong University School of Medicine, Shanghai 202150, China; 3. Department of Anesthesiology, Shanghai Third People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China) Objective To observe the expression changes of sodiumchannel N av1.8 in dorsal root ganglion( DRG) and thalamus of rats with tibial cancer pain caused by W alker256 mammary gland carcinoma cells and explore the correlation of N av1.8 and cancer pain.Methods W istar rats were randomly divided into the bone cancer pain group( n = 15) and sham-operation group( n = 15).The bone cancer pain model was established by injecting the W alker256 mammary gland carcinoma cells of 107/ mL into the tibia medullary cavity of rats of the bone cancer pain group.The tibia medulla |
ISSN: | 1674-8115 |