脂多糖致肺血管内巨噬细胞形态和功能的改变

目的探讨肺血管内巨噬细胞（ＰＩＭ）在感染性急性肺损伤（ＡＬＩ）发病中的作用。方法仿Ｍｏｒｔｏｎ法灌洗肺血管床，贴壁法分离猪ＰＩＭ，并用光镜、电镜观察鉴定；胸腺细胞增殖法测脂多糖（ＬＰＳ）刺激前后ＰＩＭ培养上清白细胞介素１β（ＩＬ－１β）活性，酶联免疫吸附试验（ＥＬＩＳＡ）法测肿瘤坏死因子α（ＴＮＦ－α）、白细胞介素６（ＩＬ－６）、白细胞介素８（ＩＬ－８）含量。结果刺激后的ＰＩＭ伪足增长、增多，溶酶体和吞噬体亦增多；释放ＴＮＦα、ＩＬ－１β、ＩＬ－６、ＩＬ－８增多，峰值分别出现在刺激后的１ｈ、２ｈ、４ｈ和６ｈ。与刺激前相比，Ｐ＜０．０１。结论改良的Ｍｏｒｔｏｎ法能成功分离猪ＰＩＭ；ＬＰＳ刺激后的ＰＩＭ吞噬分泌功能活跃，其中ＴＮＦα、ＩＬ－１β升高最早，提示其在ＡＬＩ发病早期起重要作用；而ＩＬ－６、ＩＬ－８升高较晚，可能在ＡＬＩ发病后期起重要作用     

肺血管内巨噬细胞与急性肺损伤

肺血管内巨噬细胞（ＰＩＭ）是单核吞噬细胞系统的成员，是肺巨噬细胞亚群之一。本着重综述ＰＩＭ的结构、生物活性及其在急性肺损伤中的作用。     

肺血管内巨噬细胞与急性肺损伤

肺血管内巨噬细胞(PIM)是单核吞噬细胞系统的成员,是肺巨噬细胞亚群之一。本文着重综述PIM的结构、生物活性及其在急性肺损伤中的作用。     

脂多糖致大鼠急性肺损伤后血浆TNF—α、IL-1β和IL-4的改变

将30只大鼠分为空白对照组、注射脂多糖（LPS）后0．5、1、2和4h组,每组6只。分别测各时相血浆肿瘤坏死因子α（TNF—α）、白介素1β（IL-1β）、白介素4（IL-4）值。同时观察肺组织形态学变化,进行肺湿／干重比（W／D）测定。结果发现注射LPS后1h组TNF—α、IL-1β值达到最高峰,此后逐渐下降,但仍高于空白对照组（P〈0．05）;而IL-4值持续升高,各组均显著高于空白对照组（P〈0．05）。与对照组相比,注射LPS后各组W／D值均明显上升（P〈0．05）。认为促炎因子TNF-α、IL-1β导致肺组织炎症反应加剧,抗炎因子IL-4的异常增高,促炎／抗炎比例失衡可能是LPS引起AU的重要机制。     

脂多糖和抗炎药物对肺血管内巨噬细胞核因子kB的影响

观察脂多糖致肺血管内巨噬细胞核因子ｋｂ的活化及抗炎药物地塞米松和阿斯匹林对ＮＦ－ｋＢ的影响。方法用改良法分离,培养猪ＰＩＭ,设正常对照,ＬＰＳ刺激,ＤＥＸ和ＡＳＡ干预组,共４组。用凝胶电泳迁移率改变分析法和放射免疫分析法,分别检测ＰＩＭ核提取物ＮＦ－ｋＢ的活性和细胞培养上清肿瘤坏死因子α的含量。     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

目的 比较两株小鼠来源的巨噬细胞株RAW264.7和Ana-1经脂多糖(lipopolysaccharide,LPS)诱导后在形态及细胞因子表达等方面的差异.方法 MTT法检测小同终浓度(0.1 mg/L、1 mg/L、10 mg/L、100 mg/L)LPS作用后两株细胞增殖活力,确定最佳作用浓度.选择1 mg/L LPS刺激RAW264.7和Ana-1细胞,ELISA法分别于0 h、4 h、8 h、12 h、24 h检测两株细胞肿瘤坏死因子α(TNF-α)、白介素1β(IL-1β)、IL-6和IL-10的表达量.结果 LPS终浓度为1 mg/L时两株细胞存活率分别为(162.05±28.14)%、(159.92±20.43)%,显著大于同细胞其他浓度组别(P<0.01);1 mg/L LPS刺激后,两株细胞各细胞因子表达均为随时间呈先增多后减少趋势,峰值出现时间RAW264.7细胞早于Ana-1细胞.TNF-α的表达4 h时RAW264.7细胞高于Ana-1(P<0.01),8 h、12 h时低于后者(P<0.05);IL-1β的表达各时间点比较RAW264.7均高于Ana-1(P<0.05);IL-6的表达各时间点比较RAW264.7均低于Ana-1(P<0.05);IL-10的表达于刺激后4 h,RAW264.7细胞高于Ana-1细胞(P<0.05).结论 当LPS浓度为1 mg/L时,Ana-1与RAW264.7细胞存活率均最强;经LPS刺激后,RAW264.7细胞TNF-α、IL-6、IL-1β、IL-10表达高峰早于Ana-1细胞,各细胞因子表达量各有侧重.研究者进行炎症相关实验时对Ana-1和RAW264.7的选择需考虑两者之间的差异.     

老年人血清TNF-α、IL-1β、IL-8、IL-6含量与患侵袭性肺曲霉病的相关性

随着广谱抗生素的应用和新免疫抑制剂的使用,由曲霉病原菌感染而引起的一系列肺部疾患出现高发期,此类疾病的文献报道不断增加[1-3].曲霉病原菌可分为支气管肺曲霉菌感染(ABPA)和侵袭性肺曲霉感染(IPA)等类型,其中,最为严重且病死率最高的为IPA[1-3].本文主要探讨老年人血清TNF-α、IL-1β、IL-8、IL-6含量降低与IPA的相关性,为IPA的检测提供依据.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖刺激RAW264.7和Ana-1形态改变及细胞因子表达的差异

Objective To compare the morphologic change and cytokines expression in RAW264.7 and Ana-1 stimulated by lipopolysaccharide(LPS). Methods RAW264.7 and Ana-1 were cultivated with various concentrations of LPS(0.1 mg/L, 1 mg/L, 10 mg/L, 100 mg/L). MTT was performed to evaluate the proliferation ability of cells. Two kinds of cells were cultivated with 1 mg/L. Then,the concentrations of TNF-α,IL-1β,IL-6,IL-10 in culture medium were detected by ELISA in different times(0 h,4 h,8 h,12 h,24 h). Results The survival rates of RAW264.7 and Ana-1 (162.05±28.14)% and (159.92±20.43)% were significantly higher in 1 mg/L group than those of other groups. When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 expressed cytokines in time-dependent manner (increased first and decreased finally). The concentrations of TNF-α and IL-10 in RAW264.7 group were higher than those Ana-1 group in 4 h only. IL-1β and IL-6,however,were in higher concentrations in RAW264.7 group than Ana-1 group all the time. Conclusions When stimulated with 1 mg/L LPS, both RAW264.7 and Ana-1 have higher survival rate. RAW264.7 and Ana-1 have different ability in expressing cytokines after being stimulated by LPS. Therefore,RAW264.7 and Ana-1 have variant response to LPS slightly.     

脂多糖和抗炎药物对肺血管内巨噬细胞核因子κB的影响

目的观察脂多糖（ＬＰＳ）致肺血管内巨噬细胞（ＰＩＭ）核因子κＢ（ＮＦκＢ）的活化及抗炎药物地塞米松（ＤＥＸ）和阿斯匹林（ＡＳＡ）对ＮＦκＢ的影响。方法用改良法分离、培养猪ＰＩＭ,设正常对照、ＬＰＳ刺激、ＤＥＸ和ＡＳＡ干预组,共４组。用凝胶电泳迁移率改变分析（ＥＭＳＡ）法和放射免疫分析（ＲＩＡ）法,分别检测ＰＩＭ核提取物ＮＦκＢ的活性和细胞培养上清肿瘤坏死因子α（ＴＮＦα）的含量。结果ＬＰＳ刺激组ＮＦκＢ活性于刺激后０５～４小时、ＴＮＦα含量于刺激后１～２小时高于刺激前和正常对照组（Ｐ＜０．０１）;二者在刺激后１小时呈显著正相关（ｒ＝０．９９１,Ｐ＜０．０１）。ＤＥＸ组和ＡＳＡ组ＮＦκＢ活性、ＴＮＦα含量虽较刺激前和正常对照组有所升高,但均显著低于ＬＰＳ组（Ｐ＜０．０１）。结论ＬＰＳ可诱导ＰＩＭＮＦκＢ激活,并进而导致ＴＮＦα的基因转录和表达增加;ＤＥＸ和ＡＳＡ可通过抑制ＮＦκＢ的活化而减少ＴＮＦα的释放。     

巨噬细胞炎症蛋白-1α在机械通气致大鼠急性肺损伤中的作用

目的 观察巨噬细胞炎症蛋白-1α(MIP-1α)在不同潮气量机械通气致大鼠急性肺损伤发病中的作用.方法 24只雄性健康Wistar大鼠随机分为对照组、小潮气量组和大潮气量组.分别检测各组大鼠支气管肺泡灌洗液(BALF)中性粒细胞计数、BALF和血浆髓过氧化物酶(MPO)活性和MIP-1α含量以及肺组织MIP-1α蛋白表达水平.结果 大潮气量组大鼠BALF中性粒细胞计数、MPO活性及MIP-1α含量均明显高于对照组和小潮气量组(P值均<0.01).大潮气量组大鼠肺泡上皮和细支气管上皮细胞MIP-1α蛋白表达水平明显高于对照组和小潮气量组(P值均<0.01).对照组与小潮气量组各项指标比较差异无统计学意义.相关分析结果表明,各组大鼠BALF中MIP-1α含量与中性粒细胞计数及MPO活性均呈正相关(r=0.803,r=0.791,P值均<0.05).结论 趋化性细胞因子MIP-1α促使中性粒细胞在肺内募集、活化是导致呼吸机所致肺损伤发病的重要因素之一;呼吸机所致肺损伤病变部位不仅仅局限于肺泡,对细支气管也有一定损伤作用.     

甲型副伤寒沙门氏菌cdtB亚基的原核表达及对巨噬细胞IL-6、IL-8、TNF-α分泌的影响

目的研究甲型副伤寒沙门氏菌感染过程中,cdtB对宿主巨噬细胞分泌促炎细胞因子的影响。NF-κB信号通路阻断剂对cdtB诱导的巨噬细胞分泌细胞因子的影响。方法对甲型副伤寒沙门氏菌cdtB亚基进行原核表达,制备并模型纯化重组蛋白,建立其刺激人THP-1巨噬细胞模型,ELISA检测THP-1分泌IL-6,IL-8和TNF-α等细胞因子。在共培养体系中加入NF-κB信号通路阻断剂,ELISA检测THP-1分泌IL-6,IL-8和TNF-α等细胞因子。结果成功构建甲型副伤寒沙门氏菌cdtB原核表达系统,表达并纯化重组cdtB蛋白,与空白对照相比,受到cdtB刺激的THP-1细胞上清中的IL-6,IL-8和TNF-α浓度显著上升,而在THP-1细胞培养基中加入NF-κB信号通路阻断剂SN50可以显著抑制重组cdtB诱导的IL-6、IL-8、TNF-α分泌。结论甲型副伤寒沙门氏菌cdtB能够通过NF-κB信号通路诱导巨噬细胞分泌IL-6、IL-8和TNF-α,在甲型副伤寒相关的炎症反应中发挥促进作用。