Association between NRG1-Erbb4 Polymor- phism and Focal Epilepsy
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摘要:
目的 研究云南地区患有局灶性癫痫人群的神经调节因子1(Neuregulin-1,NRG1)及其受体ErbB4基因的多态现象与局灶性癫痫易感性的关系。 方法 采用癫痫病例组和健康对照组对比分析,通过Snapshot检测方法,对云南地区的70例局灶性癫痫患者、64例健康对照者进行基因多态现象检测分析,研究对象样本均来自2020年3月到7月昆明医科大学第一附属医院。 结果 发现局灶性癫痫与NRG1(SNP rs35753505, T > C)的多态现象有相关性,NRG1(SNP rs35753505, T > C)基因型( P = 0.007)和等位基因(P = 0.005)的分布差异有统计学意义(P < 0.05)。与此同时,本研究还对NRG1下游受体ErbB4的基因多态性进行分析,发现ErbB4(SNPrs839523,G > A)基因型( P = 0.026)和等位基因(P = 0.013)、(SNPrs707284,A > G)基因型( P = 0.038)和等位基因(P = 0.018)的分布差异有统计学意义(P < 0.05),并且发现SNP rs707284携带的G/G基因型OR值为3.656(95% CI = 1.160-11.525)。 结论 携带突变纯合子G/G基因型的人群患癫痫的易感性较高,NRG1-ErbB4基因多态现象可能共同参与了局灶性癫痫的发生。 Abstract:Objective To determine the effect of the Neuregulin-1 and its receptor ErbB4(NRG1-ErbB4) polymorphisms on focal epilepsy. Methods Three single nucleotide polymorphisms (SNPs) of NRG1 gene and three single nucleotide polymorphisms (SNPs) of ErbB4 gene in 70 patients with focal epilepsy and 64 healthy persons were analyzed by the PCR-SnapShot genotyping methods.The samples were all from the First Affiliated Hospital of Kunming Medical University from March to July, 2020. Results It was found that focal epilepsy was correlated with polymorphism of NRG1 (SNP rs35753505, T > C), the distribution of genotype ( P = 0.007) and allele (P = 0.005) of NRG1 (SNP rs35753505, T > C) was statistically significant ( P < 0.005). Meanwhile, ErbB4 gene polymorphisms of NRG1 downstream receptors was analyzed firstly, and two SNPs was found to be associated with focal epilepsy, ErbB4 SNP(rs839523, P = 0.026) and its allele (P = 0.013), ErbB4 SNP(rs707284, P = 0.038) and its allele (P = 0.018). However, no statistically significant association was found between NRG1(rs6994992, rs62510682), ErbB4(rs7598440) polymorphisms and focal epilepsy. Conlusions The susceptibility of focal epilepsy carrying NRG1(SNP, rs35753505) and ErbB4(rs839523, rs707284) mutation homozygous has increased. NRG1-ErbB4 polymorphisms might play an important role together in the susceptibility to partial epilepsy. -
Key words:
- Neuregulin-1 /
- Receptors /
- ErbB-4 /
- Partial epilepsy /
- Polymorphism
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表 1 检测基因引物序列(1)
Table 1. The primer sequence of tested genes (1)
单核苷酸多态性 多态性 引物序列 产物长度/bp GC含量 NRG1 rs35753505 [C/T] 上游引物5′-TTTAAGGCATCAGTTTTCAATAGC-3′
下游引物5′-TGTCTGGAGAAGGTTTGGAATG-3′352 bp 32.1% rs6994992 [C/T] 上游引物5′-AGGATTGGATGTTTGAACCACT-3′
下游引物5′- GGAGGGACAGGGTCATCACA-3′202 bp 50.0% rs62510682 [G/T] 上游引物5′-GCAAAATCAGCAACATCCTTC-3′
下游引物5′-TTCCCACGTTATCTCCTACTCTT-3′194 bp 37.6% ErbB4 rs839523 [A/G] 上游引物5′-CACTTGGAGCATCCTCTTCTG-3′
下游引物5′-ACTTGGCATGGCATTTGG-3′151 bp 38.4% rs7598440 [C/T] 上游引物5′-TCACCGCAGGGAATAAAACA-3′
下游引物5′-CGATGGTAAAAGGCGTGCT-3′245 bp 48.2% rs707284 [A/G] 上游引物5′-CCACAACTGAGGGTTTTAGGAA-3′
下游引物5′-TCAGAGGGTGGACGGTGG-3′387 bp 38.2% 表 1 检测基因引物序列(2)
Table 1. The primer sequence of tested genes (2)
延伸引物方向 延伸产物 延伸引物长度 延伸引物 Nrg1 R AG 22 5′-GGAAGCCATGTATCTTTATTTT-3′ F CT 22 5′-CACCATGCAGGGTTCAAGTGAA-3′ F GT 48 5′-TTTTTTTTTTTTTTTTTTTTTTTTTTATATGTGTGCAAACAGTTCTTA-3′ ErbB4 F AG 32 5′-TTTTTTTTTTATTTGCAGATTATTTGCAGCTT-3′ F CT 32 5′-TTTTTTTTTTGGCTACCCCTGGTAAGAGGGCT-3′ F AG 42 5′-TTTTTTTTTTTTTTTTTTTTACATGTGCATGGAGTTTTTACC-3′ 表 2 NRG1基因多态性与局灶性癫痫易感性关系[n(%)]
Table 2. The relationship between NRG1 gene polymorphism and susceptibility to focal epilepsy [n(%)]
SNP 基因型/等位基因 癫痫组 对照组 Pa OR(95% CI) χ2 Pb rs35753505 T/T 13 (18.6) 19 (29.7) 1 9.996 0.007 C/C 25 (35.7) 8 (12.5) 0.007 0.228 (0.078-0.663) C/T 32 (45.7) 37 (57.8) 0.540 0.767 (0.329-1.790) T 58 (41.4) 75 (58.6) 1 7.881 0.005 C 82 (58.6) 53 (41.4) 0.005 0.500 (0.307-0.813) rs6994992 C/C 13 (18.6) 14 (21.9) 1 4.445 0.108 T/C 30 (42.9) 36 (56.3) 0.869 1.078 (0.441-2.638) T/T 27 (38.6) 14 (21.9) 0.173 0.500 (0.185-1.354) C 56 (40.0) 64 (50.0) 1 2.704 0.100 T 84 (60.0) 64 (50.0) 0.101 0.667 (0.411-1.082) rs62510682 G/G 61 (87.1) 56 (87.5) 1 0.004 0.951 G/T 9 (12.9) 8 (12.5) 0.951 0.968 (0.349-2.683) T/T 0 (0) 0 (0) ----- ----------------- G 131 (93.6) 120 (93.8) 1 0.004 0.952 T 9 (6.4) 8(6.3) 0.952 0.970 (0.363-2.596) 注:a为非条件 logistic 回归分析的P值,b为卡方检验的双侧P值。 表 3 ErbB4基因多态性与局灶性癫痫易感性的关系[n(%)]
Table 3. The relationship between the polymorphism of ErbB4 gene and the susceptibility of focal epilepsy [n(%)]
SNP 基因型/等位基因 癫痫组 对照组 Pa OR(95% CI) χ2 Pb rs839523 G/G 15(21.4) 26(40.6) 1 7.333 0.026 A/A 13(18.6) 5(7.8) 0.015 0.222(0.066~0.745) A/G 42(60.0) 33(51.6) 0.047 0.453(0.207~0.991) G 72(45.0) 85(66.4) 1 6.182 0.013 A 68(55.0) 43(33.6) 0.013 0.536(0.327~0.878) rs7598440 C/C 18(25.7) 12(18.8) 1 1.129 0.569 T/C 39(55.7) 37(57.8) 0.420 1.423(0.604~3.356) T/T 13(18.6) 15(23.4) 0.302 1.731(0.611~4.905) C 75(53.6) 61(47.7) 1 0.936 0.333 T 65(46.4) 67(52.3) 0.334 1.267(0.784~2.049) rs707284 A/A 13(18.6) 6(9.4) 1 6.526 0.038 A/G 41(58.6) 31(48.4) 0.368 1.638(0.560~4.795) G/G 16(22.9) 27(42.2) 0.027 3.656(1.160~11.525) A 67(47.9) 43(33.6) 1 5.622 0.018 G 73(52.1) 85(66.4) 0.018 1.814(1.107~2.975) 注:a为非条件 logistic 回归分析的P值;b为卡方检验的双侧P值。 -
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