鞘内注射JNK特异性抑制剂SP600125对CCI大鼠痛行为的影响

目的 观察鞘内注射c-Jun氨基末端蛋白激酶(c-Jun N-terminal protein kinase,JNK)特异性抑制剂SP600125对慢性压榨性损伤(chronic constriction injury,CCI)大鼠痛行为的影响.方法 雄性sD大鼠40只,随机分为5组(n=8). SP5组:CCI模型,鞘内注射SP600125 5μg;SP25组:CCI模型,鞘内注射SP600125 25 μg;SP50组:CCI模型,鞘内注射SP600125 50μg;DMSO组:CCI模型,鞘内注射2%二甲亚砜溶剂10 μl;Naive组:正常大鼠,鞘内注射SP600125 50μg.SP600125均溶于2%二甲亚砜10μl.CCI模型制作7 d后行鞘内注射,并测定大鼠机械缩足反射阈值(mechanical withdrawal threshold,MWT)及热缩足反射潜伏期(thermal withdrawal latency,TWL).结果 鞘内注射SP600125对正常大鼠的痛行为无影响.鞘内注射一定剂量SP600125能减轻CCI大鼠的机械痛敏及热痛敏.结论 鞘内注射一定剂量的SP600125能够减轻CCI大鼠的机械痛敏及热痛敏.     

鞘内注射JNK特异性抑制剂SP600125对CCI大鼠痛行为的影响

Objective To observe the effect of intrathecal administration of SP600125 on both MWT and TWL of rats after chronic constriction injury (CCI) of the sciatic nerve. Methods 40 male SD rats were randomized to deride into 5 groups (n=8). Rats in group SP5 received SP600125 5 μg after CCI; rats in group SP25 received SP600125 25 μg after CCI; rats in group SP50 received SP600125 50 μg after CCI; rats in group DMSO received 2% DMSO 10 μl after CCI; rats in group Naive received SP600125 50 μg without sciatic nerve injury. SP600125 was dissolved in 10 μl 2%DMSO solvent. On the 7th day after CCI, MWT and TWL were determined with yon Frey filaments and thermal radiation apparatus repectively after intrathecal administration of SP600125. Results Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI rather than normal rats. Conclusion Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI.     

鞘内注射JNK特异性抑制剂SP600125对CCI大鼠痛行为的影响

Objective To observe the effect of intrathecal administration of SP600125 on both MWT and TWL of rats after chronic constriction injury (CCI) of the sciatic nerve. Methods 40 male SD rats were randomized to deride into 5 groups (n=8). Rats in group SP5 received SP600125 5 μg after CCI; rats in group SP25 received SP600125 25 μg after CCI; rats in group SP50 received SP600125 50 μg after CCI; rats in group DMSO received 2% DMSO 10 μl after CCI; rats in group Naive received SP600125 50 μg without sciatic nerve injury. SP600125 was dissolved in 10 μl 2%DMSO solvent. On the 7th day after CCI, MWT and TWL were determined with yon Frey filaments and thermal radiation apparatus repectively after intrathecal administration of SP600125. Results Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI rather than normal rats. Conclusion Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI.     

鞘内注射JNK特异性抑制剂SP600125对CCI大鼠痛行为的影响

Objective To observe the effect of intrathecal administration of SP600125 on both MWT and TWL of rats after chronic constriction injury (CCI) of the sciatic nerve. Methods 40 male SD rats were randomized to deride into 5 groups (n=8). Rats in group SP5 received SP600125 5 μg after CCI; rats in group SP25 received SP600125 25 μg after CCI; rats in group SP50 received SP600125 50 μg after CCI; rats in group DMSO received 2% DMSO 10 μl after CCI; rats in group Naive received SP600125 50 μg without sciatic nerve injury. SP600125 was dissolved in 10 μl 2%DMSO solvent. On the 7th day after CCI, MWT and TWL were determined with yon Frey filaments and thermal radiation apparatus repectively after intrathecal administration of SP600125. Results Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI rather than normal rats. Conclusion Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI.     

鞘内注射JNK特异性抑制剂SP600125对CCI大鼠痛行为的影响

Objective To observe the effect of intrathecal administration of SP600125 on both MWT and TWL of rats after chronic constriction injury (CCI) of the sciatic nerve. Methods 40 male SD rats were randomized to deride into 5 groups (n=8). Rats in group SP5 received SP600125 5 μg after CCI; rats in group SP25 received SP600125 25 μg after CCI; rats in group SP50 received SP600125 50 μg after CCI; rats in group DMSO received 2% DMSO 10 μl after CCI; rats in group Naive received SP600125 50 μg without sciatic nerve injury. SP600125 was dissolved in 10 μl 2%DMSO solvent. On the 7th day after CCI, MWT and TWL were determined with yon Frey filaments and thermal radiation apparatus repectively after intrathecal administration of SP600125. Results Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI rather than normal rats. Conclusion Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI.     

鞘内注射JNK特异性抑制剂SP600125对CCI大鼠痛行为的影响

Objective To observe the effect of intrathecal administration of SP600125 on both MWT and TWL of rats after chronic constriction injury (CCI) of the sciatic nerve. Methods 40 male SD rats were randomized to deride into 5 groups (n=8). Rats in group SP5 received SP600125 5 μg after CCI; rats in group SP25 received SP600125 25 μg after CCI; rats in group SP50 received SP600125 50 μg after CCI; rats in group DMSO received 2% DMSO 10 μl after CCI; rats in group Naive received SP600125 50 μg without sciatic nerve injury. SP600125 was dissolved in 10 μl 2%DMSO solvent. On the 7th day after CCI, MWT and TWL were determined with yon Frey filaments and thermal radiation apparatus repectively after intrathecal administration of SP600125. Results Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI rather than normal rats. Conclusion Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI.     

鞘内注射JNK特异性抑制剂SP600125对CCI大鼠痛行为的影响

Objective To observe the effect of intrathecal administration of SP600125 on both MWT and TWL of rats after chronic constriction injury (CCI) of the sciatic nerve. Methods 40 male SD rats were randomized to deride into 5 groups (n=8). Rats in group SP5 received SP600125 5 μg after CCI; rats in group SP25 received SP600125 25 μg after CCI; rats in group SP50 received SP600125 50 μg after CCI; rats in group DMSO received 2% DMSO 10 μl after CCI; rats in group Naive received SP600125 50 μg without sciatic nerve injury. SP600125 was dissolved in 10 μl 2%DMSO solvent. On the 7th day after CCI, MWT and TWL were determined with yon Frey filaments and thermal radiation apparatus repectively after intrathecal administration of SP600125. Results Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI rather than normal rats. Conclusion Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI.     

鞘内注射JNK特异性抑制剂SP600125对CCI大鼠痛行为的影响

Objective To observe the effect of intrathecal administration of SP600125 on both MWT and TWL of rats after chronic constriction injury (CCI) of the sciatic nerve. Methods 40 male SD rats were randomized to deride into 5 groups (n=8). Rats in group SP5 received SP600125 5 μg after CCI; rats in group SP25 received SP600125 25 μg after CCI; rats in group SP50 received SP600125 50 μg after CCI; rats in group DMSO received 2% DMSO 10 μl after CCI; rats in group Naive received SP600125 50 μg without sciatic nerve injury. SP600125 was dissolved in 10 μl 2%DMSO solvent. On the 7th day after CCI, MWT and TWL were determined with yon Frey filaments and thermal radiation apparatus repectively after intrathecal administration of SP600125. Results Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI rather than normal rats. Conclusion Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI.     

鞘内注射JNK特异性抑制剂SP600125对CCI大鼠痛行为的影响

Objective To observe the effect of intrathecal administration of SP600125 on both MWT and TWL of rats after chronic constriction injury (CCI) of the sciatic nerve. Methods 40 male SD rats were randomized to deride into 5 groups (n=8). Rats in group SP5 received SP600125 5 μg after CCI; rats in group SP25 received SP600125 25 μg after CCI; rats in group SP50 received SP600125 50 μg after CCI; rats in group DMSO received 2% DMSO 10 μl after CCI; rats in group Naive received SP600125 50 μg without sciatic nerve injury. SP600125 was dissolved in 10 μl 2%DMSO solvent. On the 7th day after CCI, MWT and TWL were determined with yon Frey filaments and thermal radiation apparatus repectively after intrathecal administration of SP600125. Results Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI rather than normal rats. Conclusion Intrathecal administration certain dosage of SP600125 could attenuate the established mechanical allodynia and thermal hyperalgesia induced by CCI.     

鞘内注射GABA转运体-1抑制剂NO-711对CCI大鼠脊髓背角pERK表达的影响

目的 观察γ-氨基丁酸(GABA)转运体-1(GAT-1)抑制剂NO-711对坐骨神经慢性松结扎(OCI)大鼠机械和热痛阈及脊髓背角神经元磷酸化细胞外信号调节激酶(pERK)表达的影响,探讨NO-711在脊髓水平抗痛敏的机制.方法 雄性SD大鼠126只,随机均分为六组(n=21):CCI+NO-711 50μg组(N50组)、CCI+NO-711 100 μg组(N100组)、CCI+NO-711 200 μg组(N200组)、CCI+生理盐水组(CN组)、CCI组、假手术组(S组).CCI组和S组在术前、术后1、3、5、7、14、21 d测定大鼠机械缩腿阈值(MWT)和热缩腿潜伏期(TWL);其余各组大鼠在手术前5 d先进行鞘内置管,CCI手术后5 d鞘内注射不同剂量的NO-711或生理盐水,测定给药前、给药后30 min、1、2、4、8 h大鼠MWT、TWL及脊髓背角pERK表达的变化.结果 CCI组MWT和TWL术后3 d后各时点较术前2 d均降低和缩短、且相应时点均低于和短于S组(P＜0.01);与给药前比较,CN组大鼠各时点MWT和TWL,差异无统计学意义,而NO-711各剂量组大鼠给药后MWT和TWL均呈剂量依赖性增加;与CCI组和NS组比较,NO-711对脊髓背角pERK表达呈剂量依赖性抑制.结论 鞘内注射NO-711能明显抑制CCI大鼠机械痛敏和热痛敏及脊髓背角pERK表达,提示pERK介导NO-711在脊髓水平具有抗痛敏效应.     

JNK抑制剂SP600125对骨质疏松症保护作用的实验研究

目的 探讨JNK抑制剂SP600125对骨质疏松症模型成骨细胞和破骨细胞分化及功能的影响。方法 使用CCK8试验检测RAW264.7细胞、BMMs细胞和成骨细胞的增殖活性;使用相关染色试验探究JNK抑制剂SP600125的成骨化作用和对破骨细胞分化及功能的影响;使用RT-PCR分别检测BMMs细胞中破骨细胞及成骨细胞特异性基因mRNA表达水平;使用蛋白印迹试验检测RAW264.7细胞中JNK通路和NF-κB通路的活化水平;使用DCFH-DA法检测RAW264.7细胞中ROS水平。结果 CCK8试验结果显示,当SP600125浓度≤20 μmmol/L,对RAW264.7细胞、BMMs细胞和成骨细胞的增殖活性无显著影响;SP600125不影响成骨细胞钙结节的形成并抑制破骨细胞分化和功能;SP600125抑制的破骨细胞特异性基因的表达但不改变成骨细胞特异性基因的表达;SP600125抑制RANKL诱导的RAW264.7细胞中JNK通路和NF-κB通路的激活及ROS水平的升高。结论 JNK抑制剂SP600125能够抑制破骨细胞的分化及骨吸收功能,但对成骨细胞的分化无显著影响。