目的探讨汉族广东地区人群白细胞介素-1β(IL-1β)、肿瘤坏死因子-β(TNFβ)及白细胞介素-10(IL-10)三种炎症细胞因子的基因多态性与血脂水平的关系。方法应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术对428例中国广东地区汉族...目的探讨汉族广东地区人群白细胞介素-1β(IL-1β)、肿瘤坏死因子-β(TNFβ)及白细胞介素-10(IL-10)三种炎症细胞因子的基因多态性与血脂水平的关系。方法应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术对428例中国广东地区汉族人群受检样本进行IL-1β+3953、TNF-β+252及IL-10-592位点的基因型检测。按常规法检测总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL)、LDL和极低密度脂蛋白(VLDL)血清浓度。结果IL-1β+3953位点各基因型间(CC、CT、TT),低密度脂蛋白(LDL)浓度的差异有显著性(F=3.628,P=0.028),CT基因型携带者LDL浓度高于CC型携带者(2.743±0.723 mmol/L vs 2.502±0.699 mmol/L,t=-2.639,P=0.009);TNFβ+252位点AG基因型携带者的总胆固醇(TC)、LDL浓度高于AA型(t=-2.406,P=0.017;t=-2.516,P=0.012);IL-10-592位点基因型间(AA、CA、CC)的血脂水平差异均无统计学意义(P>0.05)。结论炎症细胞因子基因多态性与血脂水平有关,IL-1β+3953位点T等位基因和TNFβ+252位点G等位基因与高脂血症易感性相关。展开更多
Objective:Pain from herniated disc is a common type of neuropathic pain.This study investigated whether electroacupuncture (EA) stimulation at distal-proximal combinations of acupoints in the rat model of neuropathic ...Objective:Pain from herniated disc is a common type of neuropathic pain.This study investigated whether electroacupuncture (EA) stimulation at distal-proximal combinations of acupoints in the rat model of neuropathic pain modulates spinal interleukin-1 beta (IL-1β) to induce acupuncture analgesia and possibly serve as a pain-relief modality for herniated disc.Methods:A rat model of neuropathic pain was established.Rats were randomly divided into normal,model,sham,EA 1,EA 2,and EA 3 groups.EA 1 rats were needled at bilateral ExB2,BL25,BL40,and BL60 acupoints.EA 2 rats Were needled at bilateral BL40 and BL60.EA 3 rats were needled at bilateral L5 Ex-B2 and BL25.EA stimulation was administered once daily over 7 days.Mechanical withdrawal threshold from noxious mechanical stimulation was measured 1 day preoperatively and at 3,5,and7 days postoperatively.After 7 days of intervention,enzyme-linked immunosorbent assay (ELISA) was used to quantify IL-1β in the spinal cord.Results:Mechanical withdrawal threshold of rats in the model group decreased at 3 days postoperatively when compared with the normal group (P < 0.01),lasting 7 days postoperatively.Mechanical withdrawal thresholds in the EA 1,EA 2,and EA 3 groups were elevated over the model group (P < 0.05;P < 0.01).No obvious differences were found between EA 1,EA 2,and EA 3 groups.ELISA demonstrated an increase in IL-1β in the spinal cord of rats in the model group compared with the normal group (P < 0.01).EA treatment attenuated the increase in spinal IL-1β in the model group.Expression of spinal IL-1β was significantly lower in EA 1,EA 2,and EA 3 groups.Conclusion:EA at distal + proximal acupoints,distal points,as well as proximal points attenuated upregulation of spinal IL-1β,alleviated the extent of neuropathic pain hypersensitivity,and promoted mechanical withdrawal threshold,resulting in EA analgesia.展开更多
文摘目的探讨汉族广东地区人群白细胞介素-1β(IL-1β)、肿瘤坏死因子-β(TNFβ)及白细胞介素-10(IL-10)三种炎症细胞因子的基因多态性与血脂水平的关系。方法应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术对428例中国广东地区汉族人群受检样本进行IL-1β+3953、TNF-β+252及IL-10-592位点的基因型检测。按常规法检测总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL)、LDL和极低密度脂蛋白(VLDL)血清浓度。结果IL-1β+3953位点各基因型间(CC、CT、TT),低密度脂蛋白(LDL)浓度的差异有显著性(F=3.628,P=0.028),CT基因型携带者LDL浓度高于CC型携带者(2.743±0.723 mmol/L vs 2.502±0.699 mmol/L,t=-2.639,P=0.009);TNFβ+252位点AG基因型携带者的总胆固醇(TC)、LDL浓度高于AA型(t=-2.406,P=0.017;t=-2.516,P=0.012);IL-10-592位点基因型间(AA、CA、CC)的血脂水平差异均无统计学意义(P>0.05)。结论炎症细胞因子基因多态性与血脂水平有关,IL-1β+3953位点T等位基因和TNFβ+252位点G等位基因与高脂血症易感性相关。
文摘为探讨神经生长因子(NGF)在哮喘发病中的作用及其神经免疫调节机制,本研究应用免疫组织化学方法检测各组豚鼠下呼吸道和内脏感觉传入部位白介素-1β(IL-1β)免疫反应的变化.用Western blot方法分别检测各组豚鼠肺、C7～T5段脊神经节和相应节段脊髓背角NGF和IL-1β的表达.用Luzex-F实时图像分析系统和凝胶成像分析系统分别对结果进行图像分析.免疫组织化学结果显示(染色反应强度用灰度值表示):生理盐水组与单纯致敏组豚鼠IL-1β阳性免疫反应产物的平均灰度值没有显著差异(P＞0.05);与这两个对照组相比,哮喘豚鼠气道上皮、肺内炎性细胞、血管平滑肌内的神经末梢、C7～T5段脊神经节及相应节段脊髓背角内IL-1β阳性反应产物的平均灰度值均明显降低(P＜0.01);在哮喘+NGF抗体组(鼻腔吸入NGF抗体),上述部位内IL-1β阳性反应产物的平均灰度值均明显高于哮喘组(P＜0.01).Western blot结果显示:与生理盐水组和单纯致敏组比较,哮喘组豚鼠肺、C7～T5段脊神经节及相应节段脊髓样品中IL-1β或NGF目标带的IDV(integrated density value)与内参照IDV的比值均明显升高(P＜0.01),而哮喘+NGF抗体组上述部位样品中IL-1β或NGF目标带的IDV与内参照IDV的比值均明显低于哮喘组(P＜0.01),表明NGF可上调IL-1β的表达.这些结果提示NGF诱发IL-1β的表达可能是NGF参与哮喘发病的机制之一,NGF抗体抑制哮喘时下呼吸道和内脏感觉传入部位IL-1β的表达可能是治疗哮喘的新途径.
基金This study was supported by grants from the Project of Beijing University of Chinese Medicine in China(No.JYB22 e JS022).
文摘Objective:Pain from herniated disc is a common type of neuropathic pain.This study investigated whether electroacupuncture (EA) stimulation at distal-proximal combinations of acupoints in the rat model of neuropathic pain modulates spinal interleukin-1 beta (IL-1β) to induce acupuncture analgesia and possibly serve as a pain-relief modality for herniated disc.Methods:A rat model of neuropathic pain was established.Rats were randomly divided into normal,model,sham,EA 1,EA 2,and EA 3 groups.EA 1 rats were needled at bilateral ExB2,BL25,BL40,and BL60 acupoints.EA 2 rats Were needled at bilateral BL40 and BL60.EA 3 rats were needled at bilateral L5 Ex-B2 and BL25.EA stimulation was administered once daily over 7 days.Mechanical withdrawal threshold from noxious mechanical stimulation was measured 1 day preoperatively and at 3,5,and7 days postoperatively.After 7 days of intervention,enzyme-linked immunosorbent assay (ELISA) was used to quantify IL-1β in the spinal cord.Results:Mechanical withdrawal threshold of rats in the model group decreased at 3 days postoperatively when compared with the normal group (P < 0.01),lasting 7 days postoperatively.Mechanical withdrawal thresholds in the EA 1,EA 2,and EA 3 groups were elevated over the model group (P < 0.05;P < 0.01).No obvious differences were found between EA 1,EA 2,and EA 3 groups.ELISA demonstrated an increase in IL-1β in the spinal cord of rats in the model group compared with the normal group (P < 0.01).EA treatment attenuated the increase in spinal IL-1β in the model group.Expression of spinal IL-1β was significantly lower in EA 1,EA 2,and EA 3 groups.Conclusion:EA at distal + proximal acupoints,distal points,as well as proximal points attenuated upregulation of spinal IL-1β,alleviated the extent of neuropathic pain hypersensitivity,and promoted mechanical withdrawal threshold,resulting in EA analgesia.
