硬紫草羟基萘醌提取物对炎症细胞因子表达的影响

目的 研究硬紫草羟基萘醌提取物对脂多糖（LPS）诱导的小鼠腹腔巨噬细胞RAW264.7细胞炎症因子的抑制作用和对苯磺酸（TNBS）诱导的炎症性肠病（IBD）大鼠结肠组织中肿瘤坏死因子-α（TNF-α）表达的影响。方法 对硬紫草羟基萘醌提取物进行提取分离,采用ELISA法测定硬紫草羟基萘醌提取物对LPS诱导的RAW264.7细胞释放的TNF-α和白细胞介素-1β（IL-1β）的抑制作用;用TNBS法制备IBD大鼠模型,造模24 h后ig给药,连续给药7 d,于末次给药24 h后处死大鼠,采用免疫组织化学法检测大鼠结肠组织中TNF-α的表达。结果 硬紫草羟基萘醌提取物对LPS诱导的RAW264.7细胞释放的TNF-α和IL-1β具有抑制作用;与模型组相比,硬紫草羟基萘醌提取物可降低TNBS诱导的IBD大鼠结肠组织中TNF-α的表达。结论 硬紫草羟基萘醌提取物对TNF-α和IL-1β炎症因子具有不同程度的抑制作用,并可抑制TNBS诱导的肠道炎症反应,这种抑制作用是通过降低TNF-α的表达来实现的。     

喜炎平注射液对巨噬细胞分泌炎性因子的影响

目的：研究喜炎平注射液对LPS诱导的小鼠单核巨噬细释放炎性因子的抑制作用。方法：用LPS刺激体外培养的小鼠单核巨噬细胞RAW264．7释放TNF—α、IL-6、NO等前炎性因子，检测不同浓度的药物对巨噬细胞释放以上炎性细胞因子的抑制作用。通过ELISA的方法检测TNF—α、IL-6的含量，采用Griess法检测培养液上清中NO的含量，以MTT法评价细胞毒性。结果：喜炎平注射液在3—200μg／ml的浓度范围内可明显抑制LPS诱导的巨噬细胞RAW264．7释放炎性因子TNF—α、IL-6及NO，并呈现良好的剂量依赖关系。结论：喜炎平能明显抑制巨噬细胞释放炎性细胞因子TNF—α、IL-6和NO。     

积雪草苷对LPS刺激RAW264.7细胞炎症因子的影响

目的：观察积雪草苷对脂多糖刺激小鼠RAW264．7细胞释放细胞因子的影响。方法：体外培养小鼠RAW264.7细胞，用LPS刺激小鼠RAW264．7细胞分泌TNF-α、IL-6，用不同浓度积雪草苷进行干预，ELISA法检测培养上清中促炎细胞因子的含量。结果：积雪草苷可抑制LPS刺激小鼠RAW264．7细胞释放TNF-α和IL-6，并呈一定的量效关系。结论：积雪草苷呈浓度依赖性地抑制LPS刺激小鼠RAW264，7细胞释放TNF-α和IL-6。     

新疆紫草羟基萘醌类化学成分的研究及对PDE4的抑制作用

目的 :研究新疆紫草羟基萘醌的主要成分及对PDE₄酶的抑制作用。 方法 :用硅胶柱层析、制备HPLC 和制备TLC等方法分离纯化新疆紫草中羟基萘醌化合物,通过理化性质和光谱数据进行结构鉴定。HPLC方法测定主要羟基萘醌类化合物对PDE₄酶的抑制活性。 结果 :分离鉴定了7个化合物,分别为去氧阿卡宁(1)、阿卡宁(2)、乙酰阿卡宁(3)、β,β'-二甲基丙烯酰阿卡宁(4)、α-甲基丁酰阿卡宁(5)、异丁酰阿卡宁(6)和β-乙酰氧基异戊酰阿卡宁(7)。 结论 :化合物2,5,6为首次从新疆紫草中分离得到。首次评价了新疆紫草羟基萘醌类成分对PDE₄酶的抑制作用。     

软紫草与硬紫草萘醌类化学成分的研究

目的:对软紫草与硬紫草中萘醌类化学成分进行研究。方法:利用硅胶柱色谱、葡聚糖凝胶柱色谱等方法分离纯化,通过理化常数和波谱数据鉴定化合物结构,利用圆二色谱测定萘醌化合物绝对构型。结果:从软紫草中分离得到6个化合物,鉴定为阿卡宁(AE-1),乙酰阿卡宁(AE-2),β,β-二甲基丙烯酰阿卡宁(AE-3),异丁酰阿卡宁(AE-4),α-甲基-正丁酰阿卡宁+异戊酰阿卡宁(AE-5),β-乙酰氧基异戊酰阿卡宁(AE-6);从硬紫草中分离鉴定了6个化合物,分别为紫草素(LE-1),乙酰紫草素(LE-2),β,β-二甲基丙烯酰紫草素(LE-3),异丁酰紫草素(LE-4),α-甲基-正丁酰紫草素+异戊酰紫草素(LE-5),β-羟基异戊酰紫草素(LE-6)。结论:软紫草中萘醌类化学成分绝对构型为S型,硬紫草中为R型。     

木瓜提取物体内、体外抗炎镇痛作用的实验研究

目的：探讨木瓜提取物的抗炎、镇痛作用。方法：通过冰醋酸所致小鼠扭体、二甲苯致小鼠耳壳肿胀、醋酸致小鼠腹腔毛细血管通透性增高、大鼠棉球肉芽肿等体外实验,及木瓜提取物调节脂多糖（LPS）诱导小鼠巨噬细胞系RAW264．7细胞分泌一氧化氮（NO）水平、一氧化氮合成酶（NOS）活性的体内实验,来研究木瓜提取物的抗炎镇痛作用。结果：木瓜提取物能明显减少小鼠的扭体次数、抑制二甲苯致耳壳炎症、降低小鼠腹腔毛细血管通透性及抑制大鼠肉芽肿;并有效降低LPS诱导RAW26．4．7细胞内NO水平、NOS酶活性。结论：木瓜提取物在动物体内及体外均有抗炎镇痛作用。     

蛇床子素的抗炎作用及其机制

目的研究蛇床子素的抗炎作用及其分子机制。方法用LPS刺激小鼠单核巨噬细胞RAW 264.7释放TNF-α、IL-6、NO等炎症介质,评价药物对巨噬细胞释放炎症介质的抑制作用。以ELISA法检测TNF-α、IL-6的含量,以Griess法检测NO的含量,同时以MTT法评价细胞毒性。Western blot法检测iNOS、COX-2及内参蛋白β-actin水平。比色法检测COX-2酶活性。结果蛇床子素在12.5～100μmol.L-1浓度范围内可明显抑制LPS诱导小鼠巨噬细胞RAW264.7释放炎症介质TNF-α、IL-6、NO,并呈现良好的剂量依赖关系。Western blot结果表明蛇床子素能够明显下调iN-OS和COX-2蛋白表达水平。比色法测定酶活性结果提示蛇床子素对COX-2酶活性无明显抑制作用。结论蛇床子素通过下调iNOS和COX-2蛋白表达水平,能明显抑制巨噬细胞释放炎症因子TNF-α、IL-6和炎症介质NO,这可以为蛇床子素以及相关制剂的临床应用提供一定的理论依据。     

油茶枯乙酸乙酯部位化学成分及其抗炎活性

目的:为了深入研究油茶枯化学成分及其药理活性,为其进一步开发利用奠定科学依据。方法:采用各种柱色谱手段对油茶枯醇提取物的乙酸乙酯部位化学成分进行分离,采用现代波谱手段鉴定其结构;并采用脂多糖(LPS)诱导的小鼠巨噬细胞RAW264. 7建立体外炎症筛选模型,评价其抗炎活性,为其进一步开发利用奠定科学依据。结果:从油茶枯醇提取物的乙酸乙酯部位中分离获得10个化合物,其中8个为酚酸类化合物,2个为黄酮类化合物,分别为对羟基苯甲酸(1),原儿茶酸(2),没食子酸(3),没食子酸甲酯(4),没食子酸乙酯(5),异香草酸(6),3,4-二羟基苯甲酸乙酯(7),2-(3',4'-二羟苯基)-1,3-胡椒环-5-醛(8),槲皮素(9),芦丁(10),其中化合物4～8为首次从该植物中分离获得。上述化合物对LPS诱导巨噬细胞RAW264. 7产生炎症因子NO均具有良好的抑制作用,剂量依赖性明显,其中化合物8的活性最强。结论:油茶枯中的酚酸和黄酮类化合物在抗炎药物的开发、应用上具有良好发展前景。     

芹菜素的抗炎作用及其机制

目的:研究芹菜素的抗炎作用及其分子机制。方法:用LPS刺激小鼠单核巨噬细胞RAW 264.7释放TNF-α、IL-6、NO等炎症介质,评价药物对巨噬细胞释放炎症介质的抑制作用。以ELISA法检测TNF-α、IL-6的含量,以Griess法检测NO的含量,同时以MTT法评价细胞毒性。Western blot法检测iNOS、COX-2及内参蛋白β-actin水平。比色法检测COX-2酶活性。结果:芹菜素在12.5～100μmol.L-1浓度范围内可明显抑制LPS诱导小鼠巨噬细胞RAW 264.7释放炎症介质TNF-α、IL-6、NO,并呈现良好的剂量依赖关系。Western blot结果表明芹菜素能够下调iNOS蛋白水平,但是对COX-2蛋白表达水平无明显抑制作用。比色法测定酶活性结果提示芹菜素对COX-2酶活性无明显抑制作用。结论:芹菜素通过下调iNOS蛋白表达水平,能明显抑制巨噬细胞释放炎症因子TNF-α、IL-6和炎症介质NO,这可以为芹菜素以及相关制剂的临床应用提供一定的理论依据。     

新疆紫草及其毛状根中萘醌类化合物的研究

目的运用高效液相色谱-电喷雾离子阱液质联用技术(HPLC-ESI-MS/MS)鉴别新疆紫草中的萘醌类化合物,比较分析了9个样品中(新疆紫草原植物根及毛状根)萘醌类成分种类和含量的差异。方法采用BDS C18色谱柱,以0.1%甲酸(A)-甲醇(B)梯度洗脱,使用ESI离子源,流速1.0 m L·min-1,质量扫描范围(m/z)150~400,负离子模式下采集数据。结果新疆紫草中含有紫草素、β-羟基异戊酰紫草素、乙酰紫草素、去氧紫草素、异丁酰紫草素、β,β-二甲基丙烯酰紫草素、异戊酰紫草素或α-甲基-正丁酰紫草素7种萘醌类化合物;但其毛状根中不含紫草素成分,其他成分与新疆紫草相同。紫草素及其衍生物的种类及含量因不同区域、不同毛状根而有所差异。此外,硝酸银(Ag NO3)及营养成分能够增加毛状根中紫草素及其衍生物的种类且影响各成分的含量。结论萘醌类化合物的种类及含量受环境及培养条件的影响而变化。该方法可为新疆紫草及其毛状根的药效物质基础研究及其开发利用提供科学依据。     

小分子干扰RNA沉默髓样细胞触发受体1对内毒素诱导小鼠巨噬细胞株RAW264.7分泌炎性因子的影响

 目的利用小分子干扰RNA探讨髓样细胞触发受体1在内毒素刺激小鼠巨噬细胞株RAW264.7分泌肿瘤坏死因子α、白细胞介素1β中的作用。方法设计并合成干扰率高的小分子干扰RNA,以pLKO1.1为载体构建pLKO1.1-髓样细胞触发受体1干扰质粒。将小鼠巨噬细胞株RAW264.7分为4组：空白组;内毒素组;空质粒组（pLKO1.1组）：采用脂质体法将pLKO1.1转染细胞;干扰组（小分子干扰RNA组）：将pLKO1.1-髓样细胞触发受体1转染细胞,内毒素刺激24h后实时定量PCR分别检测髓样细胞触发受体1、肿瘤坏死因子α与白细胞介素1β的mRNA水平;以ELISA法分别检测细胞上清液中肿瘤坏死因子α、白细胞介素1β含量。结果与内毒素组比较,小分子干扰RNA组细胞中髓样细胞触发受体1、肿瘤坏死因子α、白细胞介素1β的mRNA含量显著下降(P<0.01);细胞培养上清液中肿瘤坏死因子α、白细胞介素1β含量明显降低(P<0.01)。结论小分子干扰RNA可能通过抑制髓样细胞触发受体1基因的表达而减少内毒素诱导的小鼠巨噬细胞RAW264.7中肿瘤坏死因子α、白细胞介素1β的分泌。     

芳香新塔花总黄酮对脂多糖诱导的RAW264.7细胞分泌炎症因子的影响及机制

目的观察芳香新塔花总黄酮(ZCF)对脂多糖(LPS)诱导的小鼠单核/巨噬细胞系RAW264. 7细胞炎症模型中炎症因子的影响及机制。方法采用LPS刺激RAW264. 7细胞,建立细胞炎症模型。以MTT法检测不同浓度芳香新塔花总黄酮对RAW264. 7细胞的毒性作用。芳香新塔花总黄酮和阿托伐他汀钙(阳性药物)预处理,观察各组细胞的形态,以Griess法检测NO的含量,以酶联免疫吸附试验检测细胞上清中肿瘤坏死因子-α(TNF-α)、白细胞介素-1β(IL-1β)和白细胞介素-6(IL-6)的含量,实时荧光定量PCR(qRT-PCR)测定TLR4和NF-κB p65 mRNA的表达。结果1μg/m L LPS刺激RAW264. 7细胞24 h,可成功构建炎症细胞模型。芳香新塔花总黄酮在1~100μg/m L浓度范围内对RAW264. 7细胞无显著的细胞毒性。LPS刺激RAW264. 7细胞后,细胞体积明显增大,形态不规则,伸出大量的伪足,而阿托伐他汀钙和芳香新塔花总黄酮干预后,RAW264. 7细胞变小,触角减少,形态较规则。脂多糖可明显诱导RAW264. 7细胞分泌NO、TNF-α、IL-1β和IL-6(P <0. 01),TLR4和NF-κB p65 mRNA表达增高,而芳香新塔花总黄酮和阿托伐他汀钙可使NO、TNF-α、IL-1β和IL-6的释放受到抑制(P <0. 05,P <0. 01)。芳香新塔花总黄酮和阿托伐他汀钙预处理可使TLR4和NF-κB p65 mRNA的表达降低(P <0. 05,P <0. 01)。结论芳香新塔花总黄酮可抑制LPS诱导的RAW264. 7细胞炎症反应,下调NO、TNF-α、IL-1β和IL-6的表达,其机制可能与其抑制TLR4/NF-κB信号转导通路的激活有关。     

Wogonoside displays anti-inflammatory effects through modulating inflammatory mediator expression using RAW264.7 cells

Ethnopharmacological relevance

The root of Scutellaria baicalensis Georgi, also called Huangqin in China, is an herbal-based nutraceutical which is usually used in Chinese medicated diet (CMD). As an abundant ingredient in Huangqin, wogonoside is a flavonoid glycoside. The present work investigated the anti-inflammatory activities of wogonoside in lipopolysaccharides (LPS)-induced RAW264.7 cells.

Materials and methods

RAW264.7 cells were used. The inhibition of wogonoside against nitric oxide (NO), prostaglandin E₂ (PGE₂), tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in LPS-induced RAW264.7 cells were measured. Additionally, the effects of wogonoside on mRNA expression of inducible nitric oxide synthase (iNOS), cyclooxygenase 2 (COX2), TNF-α and IL-6 were also investigated.

Results and discussion

Wogonoside not only dose-dependently decreased the production of inflammatory mediators including NO and PGE₂ but also inhibited the release of pro-inflammatory cytokines including TNF-α and IL-6 in LPS-induced RAW264.7 cells. Furthermore, wogonoside possessed significantly in vitro inhibitory effects on the gene expression of iNOS, COX2, TNF-α and IL-6.

Conclusion

These results suggest that wogonoside may be used as a functional food component for prevention and treatment of inflammation.     

昆明山海棠总生物碱对LPS诱导的小鼠RAW264.7细胞分泌TNF-αNO的影响

目的:研究THHta对LPS诱导的小鼠RAW264.7细胞分泌TNF-α及NO的影响,探讨THHta的抗炎作用机理.方法:CCK8法测定THHta对RAW264.7细胞增殖的影响;LPS刺激RAW264.7细胞建立体外炎症模型;ELISA法检测THHta对LPS诱导的RAW264.7细胞分泌TNF-α的影响;硝酸还原酶...     

小钻木脂素类化合物戈米辛R的体外抗炎机制研究

目的 通过脂多糖(LPS)诱导活化小鼠单核巨噬细胞系RAW264.7建立炎症模型,探讨小钻木脂素类化合物戈米辛R对炎症细胞增殖及炎症因子分泌的影响,评价其抗炎活性及机制。方法 采用MTT比色法检测经LPS诱导的RAW264.7细胞存活率并计算半数抑制浓度(IC₅₀);采用ELISA法检测细胞上清液TNF-α、IL-1β、IL-6等炎症因子含量;利用RT-PCR法检测细胞TNF-α、IL-1β、IL-6、IκB-α、NF-κB p65的mRNA表达量;Western blot法检测细胞IκB-α及NF-κB p65蛋白表达量。结果 与LPS模型组比较,戈米辛R可显著抑制LPS诱导的RAW264.7细胞增殖;降低细胞分泌TNF-α、IL-1β及IL-6的含量;升高LPS所致降低的IκB-α mRNA的表达量同时降低LPS引起升高的TNF-α、IL-1β、IL-6、NF-κB p65的mRNA表达量;升高IκB-α并降低NF-κB p65的蛋白表达量,显示出良好的剂量依赖性,具有统计学差异(P<0.05)。结论 戈米辛R可通过抑制TNF-α、IL-1β、IL-6、NF-κB p65的mRNA和NF-κB p65蛋白的表达,增加IκB-α mRNA和IκB-α蛋白的表达,减少致炎因子TNF-α、IL-1β、IL-6的释放,从而发挥显著抗炎活性。     

Flower extract of Panax notoginseng attenuates lipopolysaccharide-induced inflammatory response via blocking of NF-κB signaling pathway in murine macrophages

Aim of the study

The root of Panax notoginseng (PN) is commonly used to treat chronic liver disease with its therapeutic abilities to stop haemorrhage in the circulation, while the PN flower (PN-F) is largely unknown in the biological activities on inflammation and mechanisms of its actions. In this study, the pharmacologic effects of PN-F methanol extract on inflammation were investigated to address potential therapeutic or toxic effects in LPS-stimulated mouse macrophage cells, RAW264.7 cells.

Materials and methods

Production of NO, PGE₂ and pro-inflammatory cytokines (TNF-α and IL-1β) in supernatant, the expression of iNOS, COX-2 and cytokines, the phosphorylation of MAPK moleduces (ERK1/2, JNK and p38 MAPK), and the activation of NF-κB in PN-F extract were assayed in LPS-stimulated RAW264.7 cells.

Results

PN-F extract significantly inhibited the productions of NO, PGE₂, TNF-α and IL-1β on the LPS-stimulated RAW264.7 cells. In addition, PN-F extract suppressed the mRNA and protein expressions of iNOS, COX-2, TNF-α and IL-1β in LPS-stimulated RAW264.7 cells. The molecular mechanism of PN-F extract-mediated attenuation in RAW264.7 cells has close a relationship to suppressing the phosphorylation of MAPK molecules such as ERK1/2, JNK and p38 MAPK, and the translocation of NF-κB p65 subunit into nuclear.

Conclusion

These results indicate that PN-F extract inhibits LPS-induced inflammatory response via the blocking of NF-κB signaling pathway in macrophages, and demonstrated that PN-F extract possesses anti-inflammatory properties in vitro.     

青蒿素和二氢青蒿素的抗炎作用及机制

目的:研究并比较青蒿素和二氢青蒿素的抗炎作用及其分子机制.方法:用LPS刺激小鼠单核巨噬细胞RAW 264.7释放TNF-α,IL-6,NO等炎症介质,评价药物对巨噬细胞释放以上炎症介质的抑制作用.以ELISA法检测TNF-α,IL-6的含量,以Griess法检测NO的含量,同时以MTF法评价细胞毒性.Western blot法检测iNOS,COX-2及内参蛋白β-actin水平.比色法检测COX-2酶活性.结果:二氢青蒿素在12.5～100μnol·L-1可明显抑制LPS诱导小鼠巨噬细胞RAW 264.7释放TNF-α,IL-6及NO,并呈现良好的剂量依赖关系.青蒿素仅对IL-6具有一定程度的抑制作用.结论:二氢青蒿素通过下调iNOS蛋白表达,抑制巨噬细胞释放炎症因子TNF-α,IL-6和炎症介质NO发挥抗炎活性,青蒿素可能通过代谢为二氢青蒿素发挥抗炎作用.     

Lipid-soluble extracts from Salvia miltiorrhiza inhibit production of LPS-induced inflammatory mediators via NF-κB modulation in RAW 264.7 cells and perform antiinflammatory effects in vivo

Salvia miltiorrhiza, a traditional Chinese herbal medicine, is used to treat various inflammatory diseases. In the present study, the antiinflammatory effects of S. miltiorrhiza lipid-soluble extracts (SMLE) were demonstrated in vitro and in vivo, along with its underlying mechanism of action. SMLE significantly inhibited the production of NO, TNF-α, IL-1β and IL-6 in lipopolysaccharides (LPS)-stimulated RAW 264.7 cells. SMLE also inhibited the LPS-induced degradation of IκB-α in the cytoplasm and the translocation of p65 to the nucleus in RAW 264.7 cells. In addition, SMLE inhibited the production of intracellular reactive oxygen species (ROS) and the surface expression of CD14 induced by LPS. In animal models, intraperitoneal administration of SMLE increased the survival rate of endotoxemia and sepsis in mice. The topical administration of SMLE significantly inhibited ear edema induced by PMA. It was found that SMLE inhibits the LPS-induced gene and protein expression of iNOS, TNF-α, IL-1β and IL-6 in macrophages by blocking NF-κB activation, and these effects are mediated, at least in part, through the inhibition of intracellular ROS generation and the surface expression of CD14. The results suggest a possible therapeutic application of SMLE in inflammatory diseases and provide scientific evidence in support of the traditional Chinese medical practice of treatment with S. miltiorrhiza.     

Effects of taraxasterol on inflammatory responses in lipopolysaccharide-induced RAW 264.7 macrophages

Aim of the study

Taraxasterol, a pentacyclic-triterpene, was isolated from the Chinese medicinal herb Taraxacum officinale. In the present study, we investigated the in vitro anti-inflammatory activity of taraxasterol in lipopolysaccharide (LPS)-induced RAW 264.7 murine macrophages.

Materials and methods

RAW 264.7 cells were pretreated with 2.5, 5, or 12.5 μg/ml of taraxasterol 1 h prior to treatment with 1 μg/ml of LPS. Nitric oxide (NO) level in supernatants from cells was examined by Griess reaction, the concentrations of prostaglandin E₂ (PGE₂), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6) were measured by ELISA. Nuclear factor kappa B (NF-κB) activation was evaluated by immunocytochemical analysis.

Results

We found that taraxasterol inhibited NO, PGE₂, TNF-α, IL-1β and IL-6 production in LPS-induced RAW 264.7 macrophages in a dose-dependent manner. Further studies revealed that taraxasterol prevented the LPS-induced NF-κB translocation from cytoplasm into nuclear.

Conclusions

These results indicate that taraxasterol has anti-inflammatory effect by blocking NF-κB pathway.     

藏药十八味党参丸提取物对脂多糖诱导的RAW264.7细胞Akt/p38MAPK信号通路及M1/M2极化影响的探究

目的探究藏药十八味党参丸(TEP)的提取物调控脂多糖(LPS)诱导小鼠巨噬细胞RAW 264.7的炎性反应及M1/M2极化分型的探究。方法 Alarmarblue法评价RAW 264.7活力;荧光酶标定量分析细胞活性氧(reactive oxygen species, ROS)水平;Griess法检测上清液中细胞一氧化氮(NO)的分泌情况;流式细胞术检测表面标志物CD206和CCR7蛋白的表达;RT-qPCR法检测细胞白介素(IL)-1β、IL-6、趋化因子2(CCL2)、一氧化氮合酶(iNOS)、精氨酸酶(ARG)-1和肿瘤坏死因子α(TNF-α)基因表达的情况;Western blot法检测TEP调控细胞合成iNOS、蛋白激酶B(Akt)和p38丝裂原活化激酶(p38MAPK)信号通路相关蛋白的表达情况。结果与模型组相比,TEP组一定程度上提高了RAW 264.7的细胞活性,同时抑制了LPS诱导的细胞内ROS水平的升高。经过LPS刺激后,模型组NO表达量显著升高,在24 h后表达量达到最高,而TEP组NO表达显著降低。模型组的CCR7表达升高,CD206表达下降,TEP干预后CCR7表达下降,CD206表达升高,且趋势呈现浓度依赖。与模型组相比,TEP组的IL-1β、IL-6、CCL2、iNOS、ARG和TNF-α基因表达以及iNOS、Akt和p38MAPK蛋白表达水平均显著降低。结论 TEP能够抑制细胞内ROS水平,降低NO分泌和炎性基因的表达水平,抑制细胞的M1表型,促进M2表型,其机制可能与细胞内iNOS、Akt和p38MAPK信号通路蛋白表达被抑制有关。