哮喘患儿血清神经营养因子浓度、神经营养因子及其受体多态性
2012/12/31
摘要
背景:近年来,诸多研究分析了神经营养因子对气道疾病中过敏性炎症的影响。结果显示,哮喘患者的气道局部和血清中神经营养因子水平增加。本试验研究哮喘患儿血清神经营养因子是否受神经营养因子及其受体基因型的影响。
方法:本研究入选98名哮喘患儿。采用TaqMan SNP基因分型或PCR-RFLP分析,对神经营养因子及其受体基因的9个多态性进行基因分型。采用DuoSet ELISA Development Kit试剂盒,检测哮喘症状加重时血清4个神经营养因子(BDNF、NGF、NTF3、NTF4)的水平。
结果:两名携带NTRK1 A/A遗传变异体(rs6334)的患儿,具有较高的血清NGF水平(113.4和218.1 pg/mL),而所有患者的平均血清NGF仅为34.8 pg/mL。NGF rs6330和NTRK1 rs6334存在明显的上位相互作用,从而影响NGF血清水平(P = 0.0004)。对神经营养因子血清水平与神经营养因子不同基因型相关性的分析显示,不同哮喘患儿之间无显著差异。
结论:我们的结果显示,在上述检测的神经营养因子中,血清NGF水平受到NTRK1基因的基因型影响,而且存在NGF功能性遗传变异体的交互作用,表明其参与了哮喘的过敏性炎症。其他神经营养因子血清水平并不受其基因的变异影响。
(刘国梁 审校)
RespirMed.2012Nov26. pii: S0954-6111(12)00406-4.doi:10.1016/j.rmed.2012.09.024. [Epub ahead of print]
Neurotrophin serum concentrations and polymorphisms of neurotrophins and their receptors in children with asthma.
Szczepankiewicz A, Rachel M, Sobkowiak P, Kycler Z, Wojsyk-Banaszak I, Schöneich N, Szczawińska-Popłonyk A, Bręborowicz A.
Source
Laboratory of Molecular and Cell Biology, Department of Pediatric Pulmonology, Allergy and Clinical Immunology, IIIrd Department of Pediatrics, Poznan University of Medical Sciences, Poznan, Poland; Department of Pediatric Pulmonology, Allergy and Clinical Immunology, IIIrd Department of Pediatrics, Poznan University of Medical Sciences, Poznan, Poland. Electronic address: alszczep@amp.edu.pl.
Abstract
BACKGROUND: In the recent years numerous studies have analysed the effects of neurotrophins on allergic inflammation in airway diseases reporting increased neurotrophin levels locally in the airways as well as in serum of asthmatic patients. We aimed to investigate if levels of neurotrophins in serum of asthmatic children are influenced by the genotype of functional variants within genes encoding analysed neurotrophins and their specific receptors.
METHODS: In the study we included 98 children diagnosed with asthma. Genotyping of 9 polymorphisms located in neurotrophins genes and their receptors genes was done with use of TaqMan SNP genotyping assays or PCR-RFLP. The serum levels of four neurotrophins (BDNF, NGF, NTF3, NTF4) were analysed during exacerbation of asthma symptoms with use of DuoSet ELISA Development Kit (R&D).
RESULTS: The two patients with the genetic variant A/A of NTRK1 (rs6334) showed significantly higher NGF serum concentrations (113.4 and 218.1 pg/mL) as compared to the mean NGF serum concentrations in the total group of patients (34.8 pg/mL). We also observed a significant epistatic interactions between variants of NGF rs6330 and NTRK1 rs6334 that influenced NGF serum level (P = 0.0004). Analysis of four neurotrophins serum levels in relation to different genotypes of analysed neurotrophins genes showed no significant differences among analysed asthmatic children.
CONCLUSIONS: Our results suggest that, among analysed neurotrophins, NGF serum levels may be influenced by the genotype of NTRK1 gene individually as well as in the interaction with NGF functional genetic variant suggesting their involvement in allergic inflammation in asthma. Serum levels of the other neurotrophins do not seem to be affected by the variants in the analysed genes.
RespirMed.2012 Nov 26. pii: S0954-6111(12)00406-4. doi: 10.1016/j.rmed.2012.09.024. [Epub ahead of print]
上一篇:
胸腺基质淋巴细胞生成素通过STAT3信号通路促进人肺成纤维细胞参与哮喘患者气道重构
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围月经期哮喘(PMA)的特征及其与哮喘严重程度和哮喘控制的关系:来自严重哮喘研究项目的数据