脊髓碱性成纤维细胞生长因子-2/c-Jun氨基末端激酶通路在大鼠骨癌痛中的作用  被引量:1

Role of fibroblast growth factor basic-2/c-Jun N-terminal kinase pathway in rat spinal cord of bone cancer pain

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作  者:范后宝 张婷[1] 孙凯[1] 申文[2] 

机构地区:[1]徐州医学院江苏省麻醉学重点实验室、江苏省麻醉与镇痛应用技术重点实验室,221004 [2]徐州医学院附属医院疼痛科

出  处:《国际麻醉学与复苏杂志》2015年第10期884-887,共4页International Journal of Anesthesiology and Resuscitation

基  金:江苏省高校自然科学研究面上项目(12KJB320013)

摘  要:目的研究碱性成纤维细胞生长因子-2/c4un氨基末端激酶(fibroblastgrowthfactorbasic-2/cIlunN-terrninalkinase,FGF-2/JNK)通路在大鼠骨癌痛(bonecancerpain,BCP)中的作用。方法雌性sD大鼠32只,体重180g-200g,采用随机数字表法分为4组,每组8只:假手术组(S组)、BCP组(B组)、BCP+磷酸盐缓冲液(phosphatebufferedsaline,PBS)组(BP组)、BCP+FGF-2中和抗体组(BA组)。B组在大鼠胫骨平台注入Walker256乳腺癌细胞5μl(4×10^5个/ml),s组注入等量的生理盐水,术后10、11、12d,BA组鞘内注射FGF-2中和抗体(10μg,10μl),BP组鞘内注射等量的PBS。分别于注射肿瘤细胞前1d(T0)及注射肿瘤细胞后3、5、7、10、12、14d(T1~T6)测定大鼠的机械缩足反射阈值(pawwithdrawalmechanicalthreshold,PWMT);术后14d处死大鼠,取脊髓腰膨大,采用Westernblot检测脊髓磷酸化JNK(phospho-JNK,p-JNK)的表达。结果与s组比较,B组T2~k时[(9.4±1.4)、(7.9±1.4)、(6.0±1.5)、(2.8±1.2)、(2.5±1.3)g]、BP组T2-T6时[(9.4±1.4)、(6.9±1.7)、(5.4±1.7)、(2.5±0.9)、(2.3±0.8)g]、BA组T1~T4时[(10.3±1.9)、(7.7±1.3)、(4.8±1.1)g]大鼠PWMT均明显下降(P〈0.05);与B组和BP组比较,T5-6时,BA组大鼠PWMT明显升高(P〈0.05),分别为T5(9.0±1.0)g、T6(9.6±1.2)g。与S组比较,B组和BP组p-INK的表达量明显升高(P〈0.05),分别为(2.17±0.08)、(1.89±0.07)g;与B组比较,BA组p-INK的表达量(1.12±0.03)g明显降低(P〈0.05)。结论脊髓FGF-2/JNK通路参与了大鼠BCP的调控。Objective To evaluate the role of fibroblast growth factor basic-2/c-Jun N-terminal kinase(FGF-2/JNK) pathway in rats with bone cancer pain(BCP). Methods Thirty two female SD rats were randomly divided into sham group(group S, n=8), BCP group(group B, n=8), BCP+PBS group(group BP, n=8), BCP+FGF-2 neutralizing antibody group(group BA, n=8). The rat models of bone cancer pain were developed by intra-tibia inoculation of Walker 256 mammary gland cells. The rats of sham group were inoculated by saline without any cells. 1 d before inoculation (To) and on 3, 5, 7, 10, 12 and 14 d (T1-T6) after inoculation, the paw withdrawal mechanical threshold (PWMT) of mechanical stimulus with von-Frey filaments was measured. On 10, 11, 12 d, the rats of group BP and group BA were intrathecal injected with drugs respectively. The rats were then sacrificed and L4-5 segments of the spinal cord were removed for determination of p-JNK expression in spinal cord using Western blot. Results Compared with group S, a significant decrease of PWMT was observed on T2-T6 in group B and group BP (P〈0.05), the PMWT in group B on T2-T6 was[(9.4±1.4), (7.9±1.4), (6.0±1.5), (2.8±1.2), (2.5±1.3)g], in group BPI(9.4±1.4), (6.9±1.7), (5.4±1.7), (2.5±0.9), (2.3±0.8) g], and on T2-T4 [(10.3±1.90), (7.7±1.3), (4.8±1.1) g] in group BA(P〈0.05), respectively. Compared with group B, the PWMT on T5 and T6 [(9.0±1.0), (9.6±1.2) g] were significantly decreased in group BA(P〈0.05). Compared with group S, the expression of p-JNK was upregulated both in group B and group BP(P〈0.01). Compared with group B[ (2.17±0.08) g], a significant decrease of the expression of p-JNK was observed in group BA[ (1.12±0.03) g] (P〈0.05). Conclusions FGF-2/JNK pathway is involved in the mechanism of BCP in rats.

关 键 词:骨癌痛 脊髓 碱性成纤维细胞生长因子-2 磷酸化c-Jun氨基末端激酶 

分 类 号:R730.5[医药卫生—肿瘤]

 

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