双歧杆菌脂磷壁酸对深部白色念珠菌感染小鼠细胞免疫的影响

目的：观察双歧杆菌脂磷壁酸（BLTA）对深部白色念珠菌感染小鼠细胞免疫功能的影响。方法通过尾静脉注射白色念珠菌建立免疫低下小鼠深部白色念珠菌感染模型,观察BLTA处理对小鼠胸腺指数、脾脏指数、脾淋巴细胞增殖活性、NK细胞杀伤活性及血清细胞因子水平的影响。结果免疫低下小鼠深部感染白色念珠菌后,小鼠胸腺指数、脾脏指数和脾脏淋巴细胞增殖活性轻度下降（P＞0．05）,NK细胞杀伤活性明显下降（P＜0．05）,IL‐2、IL‐4和INF‐γ水平轻微升高（P＞0．05）,IL‐10水平明显升高（P＜0．05）;BLTA处理后,小鼠胸腺指数、脾脏指数、脾淋巴细胞增殖活性和NK细胞杀伤活性明显升高（P＜0．01）,血清IL‐2和IN F‐γ水平明显升高（ P＜0．05）,IL‐4变化不大,IL‐10明显降低（ P＜0．01）。结论 BL T A可改善免疫低下小鼠的免疫功能状态,恢复甚至增强深部感染念珠菌后受到抑制的细胞免疫应答。     

卡介苗免疫预防小鼠白色念珠菌感染的实验研究

目的探讨卡介苗（BCG）预先免疫对小鼠白色念珠菌感染的影响。方法采用BCG或灭菌生理盐水皮内注射预先免疫2周,然后由尾静脉注射白色念珠菌进行攻击,观察小鼠死亡率及计算存活小鼠肾组织带菌量。结果BCG免疫组存活时间长于生理盐水免疫组（P〈0.01）;存活小鼠肾组织菌落计数：BCG免疫组远少于省里盐水免疫组（P〈0.01）。结论BCG对小鼠白色念珠菌感染具有很好的保护作用。     

复方黄芪煎剂对小鼠体液免疫的调节作用

目的探讨复方黄芪煎剂对改善体液免疫功能的作用。方法比较复方黄芪煎剂对正常小鼠、免疫功能抑制小鼠及白色念珠菌感染小鼠体液免疫功能的影响。结果复方黄芪煎剂可以明显提高正常小鼠血清溶血素的水平,增加脾脏抗体形成细胞（PFC）的数量,明显改善环磷酰胺（Cy）及白色念珠菌感染引起的体液免疫抑制。结论复方黄芪煎剂具有改善体液免疫功能的作用,可以作为治疗白色念珠菌感染的辅助制剂。     

特异抗体孵育白色念珠菌对实验性肺念珠菌病病变的影响(英文)

本实验用福尔马林灭活的白色念珠菌免疫小白鼠,提取了抗白色念珠菌抗体。将白色念珠菌与抗体孵育后经气管接种于小白鼠肺内。抗体组与对照组病变无显著差异。实验结果表明,特异性抗体的存在对正常鼠肺抗白色念珠菌感染的防御反应无明显影响。     

60Co γ射线全身照射后小鼠肠道内白色念珠菌定植的实验观察

白念珠菌正常存在于人体表与腔道中,属于条件致病菌,当正常菌群失调或抵抗力降低时则引起致病,而定植是感染的第一步.本实验观察了预先口饲白色念珠菌的昆明种小鼠经60Co γ射线不同剂量全身一次性照射后不同时点肠道白色念珠菌定植情况,以期为60Co γ射线照射后引起内源性感染的防治提供实验依据. 1 材料与方法 1.1 动物来源与分组 健康昆明种小白鼠120只(第三军医大学实验动物中心提供),雄性,体重(20±5)g,随机抽取30只作本实验动物肠道白色念珠菌带菌情况调查,余90只随机分为Ⅰ、Ⅱ、Ⅲ三组,每组30只.     

两性霉素B脂质体对于白色念珠菌感染小鼠模型的治疗观察

【目的】尾静脉注射脂质体包囊两性霉素B(两性霉素B脂质体)和两性霉素B脱氧胆酸盐(两性霉素B)来评价对于暂时缺失免疫活性的小鼠白色念珠菌感染模型的疗效。【方法】给小鼠皮下注射环磷酰胺,制作小鼠暂时缺失免疫的模型。2 d后通过尾静脉给小鼠注射白色念珠菌。注射白色念珠菌4 h后,尾静脉注射抗真菌药。1 d后再次皮下注射环磷酰胺1次。记录27 d后小鼠的生存情况。【结果】高浓度两性霉素B脂质体(5mg/kg)与对照组相比明显延长白色念珠菌所感染小鼠的存活时间,在本试验中两性霉素B脂质体的耐受剂量明显高于两性霉素B(1 mg/kg)。【结论】在治疗白色念珠菌的机会感染中,高浓度两性霉素B脂质体的效果明显优于两性霉素B。     

内毒素在大肠杆菌和白色念珠菌混合感染小鼠中的作用

目的 探讨内毒素对大肠杆菌和白色念珠菌混合感染病情的影响。方法 建立小鼠大肠杆菌，白色念珠菌单独及混合感染模型，对比大肠杆菌内毒素代替大肠杆菌，多粘菌素B拮抗内毒素性，观察各组小鼠生存期，血浆内毒素水平及肺组织中的菌落数。结果 大肠杆菌或大肠杆菌内毒素和白色念珠菌同时感染组，小鼠生存期明显短于各自单独感染组（P＜0．05）；大肠杆菌和白色念珠菌同时感染组24h后，血浆内毒素水平高于大肠杆菌单独感染组（P＜0．01），大肠杆菌和白色念珠菌同时感染组24h和48h后，白色念珠菌和大肠杆菌菌落数高于各自单独感染组（P＜0．05）；内毒素和白色念珠菌同时感染组24h和48h后，白色念珠菌菌落数高于白色念珠菌单独感染组（P＜0．05）。结论 内毒素可造成大肠杆菌和白色念珠菌混合感染加理，缩短生存期。     

四君子汤对脾虚小鼠感染念珠菌后小肠组织中IFN-γ表达影响

目的:研究小鼠在脾虚时经口感染白念珠菌后经四君子汤灌胃治疗,检测小肠组织中IFN-γ mRNA及蛋白表达含量的变化,探讨脾虚小鼠在感染白色念珠菌经中药治疗后的免疫机制。方法:选取SPF级昆明种小白鼠,随机分组,经口感染白念珠菌,中药四君子汤灌胃治疗,采用RT-PCR和western-blot法检测各组小鼠小肠组织中IFN-γ mRNA及蛋白表达水平。结果:与空白对照组比,脾虚模型组、脾虚+白念珠菌、脾虚+白念珠菌+氟康唑组、脾虚+白念珠菌+四君子汤组小鼠小肠组织当中IFN-γmRNA及蛋白的表达含量在治疗后均显著上升(P0.05或者P0.01),有统计学意义。与脾虚模型组比较,脾虚+白念珠菌组、脾虚+白念珠菌+氟康唑组、脾虚+白念珠菌+四君子汤组小鼠小肠组织当中IFN-γ mRNA及蛋白的表达含量在治疗后均升高(P0.05或P0.01),有统计学意义。与脾虚+白念珠菌组比较,脾虚+白念珠菌+氟康唑组、脾虚+白念珠菌+四君子汤组小鼠小肠组织当中IFN-γ mRNA及蛋白的表达含量在治疗后均无统计学意义。与脾虚+白念珠菌+氟康唑组比较,脾虚+白念珠菌+四君子汤组小鼠小肠组织当中IFN-γ mRNA及蛋白的表达含量在治疗后无统计学意义。结论:当机体在脾虚状态下,经消化道感染白念珠菌后会导致免疫力下降,而四君子汤通过益气健脾,增强机体免疫力,起到治疗作用。     

免疫抑制小鼠肺白色念珠菌病病理研究

目的:通过建立免疫抑制小鼠肺白色念珠菌病动物模型,研究肺念珠菌病病理改变,探讨念珠菌致肺部病理改变的机制。方法:从临床重症病人体内分离、鉴定、纯化白色念珠菌,并制备成2.0×109CFU/mL菌液;免疫抑制小鼠后经气道接种法、口饲给菌法、腹腔注射法、尾静脉注射法建立小鼠肺部感染白色念珠菌病模型,观察小鼠临床症状,并用颈椎脱臼法处死小鼠,解剖观察并取材,经病理切片观察肺部病变。结果:白色念球菌感染后小鼠出现异常行为,肉眼观肺脏体积增大、肺切缘呈钝角、颜色苍白、表面多个粟粒状灰白色斑点,镜下可见肺泡壁毛细血管高度扩张充血、肺泡间隔增宽、间质水肿、肺泡腔扩张、肺泡上皮增生和空泡变性、肺泡腔内充满淡红色水肿液。结论:可通过免疫抑制小鼠气道接种白色念珠菌法获取肺白色念珠菌病动物模型,用于研究肺部白色念珠菌致病理改变的机制。     

内毒素在大肠杆菌和白色念珠菌混合感染小鼠中的作用

【目的】探讨内毒素对大肠杆菌和白色念珠菌混合感染病情的影响。【方法】建立小鼠大肠杆菌、白色念珠菌单独及混合感染模型 ,对比大肠杆菌内毒素代替大肠杆菌 ,多粘菌素B拮抗内毒素活性 ,观察各组小鼠生存期、血浆内毒素水平及肺组织中的菌落数。【结果】大肠杆菌或大肠杆菌内毒素和白色念珠菌同时感染组 ,小鼠生存期明显短于各自单独感染组(P <0 0 5 ) ;大肠杆菌和白色念珠菌同时感染组 2 4h后 ,血浆内毒素水平高于大肠杆菌单独感染组 (P <0 0 1) ;大肠杆菌和白色念珠菌同时感染组 2 4h和 4 8h后 ,白色念珠菌和大肠杆菌菌落数高于各自单独感染组 (P <0 0 5 ) ;内毒素和白色念珠菌同时感染组 2 4h和 4 8h后 ,白色念珠菌菌落数高于白色念珠菌单独感染组 (P <0 0 5 )。【结论】内毒素可造成大肠杆菌和白色念珠菌混合感染加重 ,缩短生存期     

氧化型辅酶Ⅰ对受辐射小鼠免疫功能的影响

目的探讨氧化型辅酶Ⅰ(NAD+)对受辐射小鼠免疫功能的影响。方法 60只小鼠随机分为对照组、照射组和NAD+组,每组20只。收集处理24 h后各组小鼠股骨骨髓细胞,进行骨髓有核细胞计数,检测细胞凋亡率、p53和bcl-2蛋白阳性表达以及Caspase-3活性;收集处理后10 d各组小鼠脾脏单核细胞,检测脾淋巴细胞凋亡率、p53和bcl-2蛋白阳性表达以及Caspase-3活性。结果照射组和NAD+组小鼠骨髓有核细胞数显著少于对照组(P<0.05),而NAD+组小鼠骨髓有核细胞数显著高于照射组(P<0.05)。照射组和NAD+组小鼠骨髓有核细胞凋亡率显著高于对照组(P<0.05),而NAD+组小鼠骨髓有核细胞凋亡率显著低于照射组(P<0.05)。照射组和NAD+组小鼠骨髓有核细胞p53蛋白阳性表达率显著高于对照组(P<0.05),而NAD+组小鼠骨髓有核细胞p53蛋白阳性表达率显著低于照射组(P<0.05)。照射组和NAD+组小鼠骨髓有核细胞bcl-2蛋白阳性表达率显著低于对照组(P<0.05),但NAD+组骨髓有核细胞的bcl-2蛋白阳性表达率显著高于照射组(P<0.05)。照射组和NAD+组骨髓有核细胞的Caspase-3活性显著高于对照组(P<0.05),但NAD+组骨髓有核细胞的Caspase-3活性显著低于照射组(P<0.05)。照射组和NAD+组脾淋巴细胞凋亡率和p53蛋白阳性表达率显著高于对照组(P<0.05),NAD+组小鼠脾淋巴细胞凋亡率和p53蛋白阳性表达率显著低于照射组(P<0.05)。照射组和NAD+组小鼠脾淋巴细胞的bcl-2蛋白阳性表达率显著低于对照组(P<0.05),但NAD+组脾淋巴细胞的bcl-2蛋白阳性表达率显著高于照射组(P<0.05)。照射组和NAD+组小鼠脾淋巴细胞Caspase-3活性显著高于对照组(P<0.05),但NAD+组小鼠脾淋巴细胞Caspase-3活性显著低于照射组(P<0.05)。结论 NAD+可通过抑制受辐射损伤小鼠免疫细胞凋亡而发挥免疫防护作用;NAD+发挥抗免疫细胞凋亡作用的分子机制可能是通过下调受辐射损伤细胞p53表达水平、上调bcl-2表达以及抑制Caspase-3活性。     

Adjustable action of pi-shen recipe on immune function in mice with L1210 ascites

Proliferation of Con A stimulated splenic lymphocyte was examined by incorporation of 3H-thymidine. Fluorescence polarization of DPH labelled splenic lymphocyte and bone marrow cells was measured. Proliferation of Con A stimulated splenic lymphocyte in DBA inbred healthy mice was higher than that of L1210 mice but fluorescence polarization of DPH labelled splenic lymphocyte in same healthy mice was lower than that of L1210 mice. i.e. membranous lipid lymphocyte fluidity of lymphocyte in the healthy mice was smaller than that of L1210 mice. 9 days after administration of Pi-Shen recipe by tube stomach proliferation of Con A-lymphocyte in the healthy mice has been increased. The recipe adjusted splenic lymphocyte membrane lipid fluidity of L1210 mice to level of those in healthy mice. Effects of Pi-Shen recipe on lipid fluidity of bone marrow cell membrane of L1210 mice were almost similar to that in splenic lymphocytes. These studies suggest that the mechanism on adjustable role of Pi-Shen recipe on T-lymphocyte function related to lymphocyte membrane lipid fluidity.     

CT26细胞分泌的BMPs对小鼠树突状细胞和巨噬细胞表面 PD-L1表达的影响

目的 观察小鼠结肠癌CT26细胞培养上清中骨形成蛋白(BMPs)对树突状细胞（DCs）和巨噬细胞表面程序性死亡分子配体1(programmed death-ligand 1, PD-L1)表达的影响,探讨其对免疫的调控。方法 体内实验:将皮下接种和腹腔接种CT26肠癌细胞的BALB/c荷瘤小鼠随机分为对照组、BMPs抑制剂LDN193189组和LDN193189联合紫杉醇组,肿瘤接种第8天,分组给药18 d。测量肿瘤体积和腹围,流式细胞术分别检测其瘤体或腹水中DCs和巨噬细胞百分比及其表面PD-L1阳性表达率。体外实验:对正常BalB/c小鼠骨髓分离培养的树突状细胞（BMDCs）和巨噬细胞（BMMs）分别做以下处理:①不作处理(对照组);②加入CT26上清;③与CT26不接触共培养; ④加入CT26上清联合LDN193189;⑤与CT26不接触共培养,加入LDN193189;⑥加入CT26上清联合LDN193189和紫杉醇;⑦与CT26不接触共培养,加入LDN193189和紫杉醇。ELISA检测CT26培养上清中是否有BMPs的表达,流式细胞术检测不同处理下BMDCs和BMMs表面的PD-L1表达阳性率,RT-PCR和Western blot检测干扰素调节因子1（IRF-1）mRNA和蛋白的表达。结果 体内实验中,LDN193189组肿瘤体积或腹围最大,DCs和巨噬细胞百分比及其表面PD-L1阳性表达率最低;体外实验中,ELISA检测结果显示,BMPs在CT26上清中有表达,其质量浓度为（0.59±0.09） ng/mL。加入CT26上清联合LDN193189和与CT26不接触共培养并且加入LDN193189组BMDCs和BMMs表面的PD-L1表达阳性率较低,接近对照组水平。RT-PCR和Western blot检测结果显示,对照组BMDCs、BMMs中IRF-1 mRNA和蛋白表达低于与CT26不接触共培养或加入CT26上清组;LDN193189加入到加有CT26上清或与CT26共培养的BMDCs和BMMs中,IRF-1 mRNA和蛋白表达下降;而两个LDN193189联合紫杉醇组,IRF-1 mRNA和蛋白表达均增加。结论 CT26分泌的BMPs增强树突状细胞和巨噬细胞表面PD-L1的表达。     

Comparative study on the immunogenicity between Hsp70 DNA vaccine and Hsp65 DNA vaccine in humanMycobacterium tuberculosis

Summary The BALB/c mice were immunized with Hsp70 DNA and Hsp65 DNA vaccines in humanMycobacterium tuberculosis. Eight weeks after immunization, the eyeballs were removed, blood and spleen taken, and intraperitoneal macrophages were harvested. The lymphocytic stimulating index (SI) was used to measure the cellular proliferating ability and NO release to measure the phagocytic activity of the macrophages. With ELISA kit, the levels of interleukin-2 (IL-2) and interferon-γ (IFN-γ) in serum and the splenic lymphocytic cultured supernatant were detected. The results showed that after the mice were immunized with 100 μg/mouse of Hsp70 DNA vaccine intramuscularly, the splenic lymphocytic proliferating ability in the mice was significantly increased as compared with that in the control group, vector group and Hsp65 DNA vaccine group (P<0.01); The contents of NO in the intraperitoneal macrophages of the mice were significantly lower than in the control group and Hsp65 DNA vaccine group (P<0.01); The levels of serum IL-2 in the mice were significantly higher than in the control group, but there was no statistical difference between Hsp65 DNA group and vector group (P>0.05); The contents of serum IFN-γ in the mice were significantly higher than in the control group, but significantly lower than in the Hsp65 DNA vaccine group (P< 0.05). It was indicated that immunization with Hsp70 DNA vaccine could obviously enhance the immune response, but its intensity seemed inferior to Hsp65 DNA vaccine. The anti-infection mechanisms and clinical use in the future of the vaccines of Hsp70 DNA and Hsp65 DNA are worth further studying. This project was supported by a grant from National Natural Sciences Foundation of China (No. 39870663).     

Anti-tumor effect of pEgr-interferon-γ-endostatin gene-radiotherapy in mice bearing Lewis lung carcinoma and its mechanism

Background Gene-radiotherapy, the combination of gene therapy and radiation therapy, is a new paradigm for cancer treatment. To enhance anti-tumor effect of gene-radiotherapy, in this study we construct a radiationinducible dual-gene co-expression vector pEgr-interferon(IFN)-γ/- endostatin and studied the anti-tumor effect of pEgr-IFN-γ/-endostatin gene-radiotherapy in mice bearing Lewis lung carcinoma and its mechanism.Methods Gene recombinant technique was used to construct dual-gene co-expression plasmid pEgr-IFN-γ endostatin, and single-gene expression plasmid pEgr-IFN-γ and pEgr-endostatin. The plasmids packed by liposome were injected locally into the tumors of the mice, and the tumors were irradiated with 5 Gy X-ray 36 hours later. The tumor growth rate at different time and mean survival period of the mice were observed.Cytotoxic activity of splenic cytotoxic T-lymphocyte ( CTL), natural killer (NK) cell and tumor necrosis factor (TNF)-α secretion activity of peritoneal macrophages of the mice in various groups were evaluated 15 days after irradiation. The intratumor micro-vessel density was evaluated by immunohistochemical staining 10 days after irradiation.Results The tumorgrowthrate of the mice in dual-gene-radiotherapy group was significantly lower than those in control group, 5 Gy group and single-gene-radiotherapy group at different time after gene-radiotherapy, and the mean survival period of which was longer. Cytotoxic activity of splenic CTL, NK and TNF-α secretion activity of peritoneal macrophages of the mice in dual-gene-radiotherapy group were significantly higher than those in control group, 5 Gy X-ray irradiation group and pEgr-endostatin gene-radiotherapy group 15 days after irradiation. The intratumor micro-vessel density of the mice in dual-gene-radiotherapy group was significantly lower than those in control group, 5 Gy X-ray irradiation group and pEgr-IFN-γ/gene-radiotherapy group.Conclusion The anti-tumor effect of dual-gene-radiotherapy was significantly better than that of single-gene-radiotherapy by combining the enhancement of anti-tumor immunologic function induced by IFN-γ/with the antiangiogenesis function of endostatin.     

He-Ne激光照射对脾巨噬细胞吞噬功能影响的图像分析研究

目的：研究He—Ne激光对小鼠免疫功能的影响。方法：用剂量63．7J／cm^2。的He—Ne激光照射小鼠脾区，照射时间为5、10d，每天照射5min，采用锥虫蓝活体注射显示巨噬细胞吞噬力试验方法，观察脾巨噬细胞吞噬功能，并用图像分析法对吞噬颗粒进行定量分析，所有数据输入微机作F检验。结果：照射组巨噬细胞吞噬锥虫蓝的颗粒数目、颗粒面积、颗粒面积与细胞面积之比，颗粒的积分光密度四项指标均较对照组明显增高，差异有非常显著性（P＜0．01）。结论：适当剂量的He—Ne激光照射小鼠脾区，可激活脾内巨噬细胞吞噬功能，提高机体的免疫力。     

Comparative Study on the Immunogenicity between Recombinant MS-Sj26GST Vaccine and Recombinant BCG-Sj26GST Vaccine in Schistosoma japonicum

TuberculosisandSchistosomiasisarethemajorcontagiousdiseaseswhicharethemostdangeroustothepeople’shealth Inordertogetridofthem ,wemustlookforamoreusefulvaccine Bythetech niquesofmolecularbiology ,2 6 0 0 0DaGlutathionStransferase (GST) genewasclonedintotheE coli MycobacteriumtransferringandexpressionvectorpBCG 2 0 0 0totransformittoMycobacteriumsmeg matismc2 15 5 (MS)andBCGseparatelyinordertoconstructrMS Sj2 6GSTvaccineandrBCG Sj2 6GSTvaccine Inthisstudy ,theBALB/cmicewereimmu niz…     

有机锗对造血系统的作用

用Ge-132给小鼠灌胃10天以后,骨髓造血十分活跃,股骨中有核细胞数明显升高,细胞分裂活动也显著加强。在用药为500mg/kg时,小鼠脾脏中出现了大量的以巨核和红白系为主的髓外造血灶。若药量为250mg/kg,外周血中单核巨噬细胞也显著地高于对照组。在腹腔中,可以看到白细胞总数、巨噬细胞、淋巴细胞和粒细胞呈现剂量反应的曲线关系;腹腔中的白细胞总数、巨噬细胞数比对照组增高约三倍;淋巴细胞仅在用药为500mg/kg时,高于对照组约为一倍。结果表明给正常小鼠服Ce-132以后,骨髓和脾脏的造血活动均获得加强,在剂量适当时,亦能升高巨噬细胞和淋巴细胞的数量。     

DSS诱导的急性实验性肠炎免疫细胞内GSH/GSSG与炎症损伤及细胞因子的关系

目的探讨硫酸葡聚糖钠(dextran sodium sulphate,DSS)诱导的小鼠肠炎模型腹腔巨噬细胞和脾细胞中还原型谷胱甘肽(GSH),氧化型谷胱甘肽(GSSG)的变化特征及其与Th1/Th2型细胞因子IFN-γ,IL-4的分泌及黏膜GSH表达与炎症损伤的关系.方法实验组小鼠给予含5%DSS的蒸馏水自由饮用7天之后处死,采集腹腔巨噬细胞及脾细胞,检测腹腔巨噬细胞及脾细胞中GSH与GSSG的变化.分离出的病变结肠一部分评价其病理学,另一部分结肠及脾脏培养后检测其IL-4、IFN-g的表达.结果DSS诱导的实验性肠炎小鼠腹腔巨噬细胞中的GSH较对照组降低,而GSSG较对照组增多,且GSH/GSSG比值明显减低.其脾细胞内GSH较对照组明显降低,GSH/GSSG比值较对照组降低但差异不明显.DSS诱导的实验性肠炎组病变结肠的IL-4明显升高,而其脾脏分泌的IFN-γ明显降低.结论DSS实验性肠炎中腹腔巨噬细胞是以氧化型巨噬细胞表形为主的.腹腔巨噬细胞及脾细胞中GSH的消耗、GSH/GSSG比值的减低与黏膜损坏及IL-4分泌增多、IFN-γ分泌减少相关.     

厄洛替尼对脂多糖诱导的巨噬细胞炎症反应和小鼠急性肺损伤的影响

目的: 探讨厄洛替尼对脂多糖(LPS)诱导巨噬细胞产生的炎症反应和小鼠急性肺损伤(ALI)的影响,阐明其作用机制。方法: 原代培养的小鼠骨髓来源的巨噬细胞随机分为对照组、厄洛替尼组、LPS组和LPS+厄洛替尼组。采用酶联免疫吸附(ELISA)法检测各组巨噬细胞中肿瘤坏死因子α(TNF-α)水平;Western blotting法检测各组巨噬细胞中ERK1/2和p38磷酸化水平。16只C57BL/6小鼠随机分为对照组(生理盐水灌胃3d,腹腔注射生理盐水1次)、厄洛替尼组(45mg·kg^-1厄洛替尼预处理3d,腹腔注射生理盐水1次)、LPS组(生理盐水灌胃3d,腹腔注射5mg·kg^-1LPS)和LPS+厄洛替尼组(45mg·kg^-1厄洛替尼连续3d灌胃,腹腔注射5mg·kg^-1LPS)。ELISA法检测各组小鼠血清中TNF-α的表达水平;Western blotting法检测各组小鼠肺组织中ERK1/2和p38磷酸化水平;HE染色观察各组小鼠肺组织病理形态表现。结果: 与对照组比较,厄洛替尼组巨噬细胞和小鼠血清中TNF-α水平、ERK1/2和p38蛋白磷酸化水平差异无统计学义(P>0.05),小鼠肺组织形态无明显改变;与厄洛替尼组比较,LPS组巨噬细胞和小鼠血清中TNF-α水平明显升高(P<0.05),巨噬细胞和肺组织中ERK1/2和p38蛋白磷酸化水平明显升高(P<0.05),小鼠肺组织出现ALI改变;与LPS组比较,LPS+厄洛替尼组巨噬细胞和小鼠血清中TNF-α表达水平明显降低(P<0.05),巨噬细胞和肺组织中ERK1/2和p38蛋白磷酸化水平降低(P<0.05),小鼠肺组织ALI病理状态改善。结论: 厄洛替尼可以抑制巨噬细胞炎症通路蛋白ERK1/2和p38的磷酸化水平及炎症因子TNF-α的生成,降低ALI小鼠的全身炎症反应,在一定程度上对ALI有保护作用。