Recent studies indicated that interleukin（IL）-17, growth-related oncogene（GRO）-α and IL-8 play an important role in the pathogenesis of nasal polyps. However, the effects of the increased amount of IL-17 and the ...Recent studies indicated that interleukin（IL）-17, growth-related oncogene（GRO）-α and IL-8 play an important role in the pathogenesis of nasal polyps. However, the effects of the increased amount of IL-17 and the production of GRO-α and IL-8 in human nasal polyp fibroblasts are not completely understood. This study aimed to determine the effects of the increased IL-17 on the changes of GRO-α and IL-8 expression in human nasal polyp fibroblasts and further investigate the mechanism of neutrophil infiltration in nasal polyps. Nasal polyp fibroblasts were isolated from six cases of human nasal polyps, and the cells were stimulated with five different concentrations of IL-17. Real-time fluorescence quantitative polymerase chain reaction（RT-PCR） was used to detect the mRNA expression of GRO-α and IL-8. The mRNA of GRO-α and IL-8 was expressed in unstimulated controls and remarkably increased by stimulation with IL-17. Moreover, the levels of GRO-α and IL-8 produced by fibroblasts were increased gradually with the increases in IL-17 concentrations. The present study showed that nasal fibroblasts can produce GRO-α and IL-8, and their production is remarkably enhanced by IL-17 stimulation, thereby clarifying the mechanism of the IL-17 mediated neutrophil infiltration in nasal polyps. These findings might provide a rationale for using IL-17 inhibitors as a treatment for nasal inflammatory diseases such as nasal polyps.展开更多
文摘目的分析骨质疏松性胸腰椎压缩性骨折患者血清过氧化物酶体增殖物激活受体γ辅激活因子1α(peroxisome proliferator-activated receptorγcoactivator 1α,PGC-1α)、白介素-17(interleukin-17,IL-17)表达水平及其与骨代谢的关系。方法将2014年1月至2019年4月湖北省中西医结合医院诊治的58例骨质疏松性胸腰椎压缩性骨折患者纳入骨折组,将该院同期67例单纯骨质疏松患者纳入骨质疏松组,将该院同期62例体检健康者纳入健康对照组。比较三组研究对象血清PGC-1α、IL-17表达水平,并分析其与骨代谢标志物——Ⅰ型前胶原氨基端前肽(N-terminal propeptide of typeⅠprocollagen,PINP)、骨钙素(osteocalcin,OCN)、Ⅰ型胶原羟基端肽β降解产物(β-isomerised C-terminal telopeptide of collagen typeⅠ,β-CTX)、25-羟维生素D[25-hydroxy vitamin D,25(OH)D]、甲状旁腺激素(parathyroid hormone,PTH)之间的相关性,评估PGC-1α、IL-17对骨质疏松性胸腰椎压缩性骨折的预测价值。结果三组研究对象血清PGC-1α、25(OH)D水平依次为:骨折组<骨质疏松组<健康对照组(均P<0.05),IL-17、PINP、OCN、β-CTX和PTH水平依次为:骨折组>骨质疏松组>健康对照组(均P<0.05)。Pearson相关性分析显示,PGC-1α水平与PINP、OCN、β-CTX、PTH水平均呈负相关(均P<0.01),与25(OH)D水平呈正相关(P<0.01);IL-17水平与PINP、OCN、β-CTX、PTH水平均呈正相关(均P<0.01),与25(OH)D水平呈负相关(P<0.01)。受试者操作特征曲线显示,PGC-1α、IL-17对骨质疏松性胸腰椎压缩性骨折具有一定的预测价值[曲线下面积(area under the curve,AUC)=0.887、0.835],且两项指标联合的预测价值更高(AUC=0.948)。结论PGC-1α、IL-17与骨代谢关系密切,可能参与骨质疏松性胸腰椎压缩性骨折的病理生理过程,且两项指标联合检测对骨质疏松性胸腰椎压缩性骨折具有更好的预测价值。
基金supported by grants from Research and National Promotion of Early Detection,Standardized Diagnosisand Treatment,and Preventive Strategy for Major Otology and Rhinologic Diseases(No.201202005)Wu Jieping Medical Foundation(No.LC1345)Foundation of Hubei ProvinceKey Laboratory of Molecular Imaging(No.02.03.2013-64)
文摘Recent studies indicated that interleukin（IL）-17, growth-related oncogene（GRO）-α and IL-8 play an important role in the pathogenesis of nasal polyps. However, the effects of the increased amount of IL-17 and the production of GRO-α and IL-8 in human nasal polyp fibroblasts are not completely understood. This study aimed to determine the effects of the increased IL-17 on the changes of GRO-α and IL-8 expression in human nasal polyp fibroblasts and further investigate the mechanism of neutrophil infiltration in nasal polyps. Nasal polyp fibroblasts were isolated from six cases of human nasal polyps, and the cells were stimulated with five different concentrations of IL-17. Real-time fluorescence quantitative polymerase chain reaction（RT-PCR） was used to detect the mRNA expression of GRO-α and IL-8. The mRNA of GRO-α and IL-8 was expressed in unstimulated controls and remarkably increased by stimulation with IL-17. Moreover, the levels of GRO-α and IL-8 produced by fibroblasts were increased gradually with the increases in IL-17 concentrations. The present study showed that nasal fibroblasts can produce GRO-α and IL-8, and their production is remarkably enhanced by IL-17 stimulation, thereby clarifying the mechanism of the IL-17 mediated neutrophil infiltration in nasal polyps. These findings might provide a rationale for using IL-17 inhibitors as a treatment for nasal inflammatory diseases such as nasal polyps.
