口腔鳞癌中单核细胞趋化蛋白-1在巨噬细胞浸润、聚集中的意义

目的:探讨口腔鳞癌中单核细胞趋化蛋白-1(monocyte chemoattractant protein-1 MCP-1)表达与肿瘤中浸润巨噬细胞的关系.方法:应用免疫组化方法检测口腔鳞癌中MCP-1的表达和巨噬细胞的浸润,光镜进行高倍视野下巨噬细胞记数和MCP-1表达的分级.结果:在口腔鳞癌中MCP-1的表达与肿瘤分化有关,并与肿瘤内浸润的巨噬细胞有关(P＜0.05).结论:巨噬细胞可能受MCP-1趋化作用的影响,参与肿瘤的生长和转移.     

急性冠脉综合征单核细胞对IL-18的表达及氟伐他汀的抑制作用

目的　观察急性冠脉综合征 (ACS)患者单核细胞对IL -18的表达及氟伐他汀对其抑制作用。方法　分离ACS患者外周血单核细胞 ,不同浓度氟伐他汀干预培养 ,逆转录聚合酶链反应 (RT -PCR)方法检测单核细胞对IL -18mRNA的表达。结果　ACS患者外周血单核细胞可表达IL -18mRNA ,0 1μmol·L-1 、1 0 μmol·L-1 浓度氟伐他汀干预时 ,IL -18mRNA光密度分别从 5 4 1±9 9降至 5 0 1± 12 6(P <0 0 5 )、41 2± 9 8(P <0 0 1) ,呈剂量依赖性。结论　ACS患者外周血单核细胞可表达IL -18mRNA ,且氟伐他汀对其呈剂量依赖性抑制     

单核细胞趋化蛋白3、白介素8及干扰素γ对寻常型银屑病患者外周血中性粒细胞趋化功能的影响

目的研究单核细胞趋化蛋白3(MCP-3)及其他银屑病相关细胞因子对银屑病患者中性粒细胞(PMN)趋化功能的影响。方法体外分离银屑病患者外周血PMN,用Transwell趋化小室测定MCP-3、IL-8、IFN-γ对其趋化功能的影响。结果MCP-3组与对照组比较差异无统计学意义,IL-8组对PMN有较强趋化作用,MCP-3 IL-8组趋化性明显高于IL-8组。各组细胞用IFN-γ处理前后比较,除MCP-3 IL-8组外,其他组差异均无统计学意义。结论MCP-3本身对PMN无趋化作用,但它能协同IL-8趋化PMN,IFN-γ可进一步放大这种协同趋化作用。*     

三七皂甙对急性脑梗塞患者血浆和脑脊液MCP-1、ET含量的影响

研究三七皂甙对急性脑梗塞患者血浆和脑脊液单核细胞趋化因子（MCP 1）和内皮素（ET）水平在不同时段变化的影响。方法：用酶联免疫法和放射免疫法测定MCP 1和ET在不同时间血浆和脑脊液含量的变化情况，及应用三七皂甙治疗后的影响。结果：脑梗塞患者血浆MCP 1和ET的水平明显增加，三七皂甙组各时间段MCP 1和ET的含量与对照组比较有显著性差异（P<0.05）,MCP 1在第3天达到峰值，第5天开始下降。ET在第3～5天达峰值，之后逐渐下降，第10天的含量仍高于第1天。脑梗塞48?h后患者脑脊液MCP 1和ET的含量亦明显升高。应用三七皂甙后血浆MCP 1和ET的水平均显著低于对照组（P<0.01）。结论： 脑梗塞后血浆和脑脊液MCP 1和ET水平明显增高（P<0.05）；MCP 1和ET的变化有一定相关性（r=0.852）。三七皂甙对脑梗塞后血浆和脑脊液MCP 1和ET的表达有部分抑制作用，这可能是三七皂甙减轻脑梗塞后缺血缺氧的分子机制之一。     

急性期川崎病与过敏性紫癜患儿血浆趋化因子的比较

目的:探讨川崎病(KD)与过敏性紫癜(HSP)发病机制中炎性细胞的参与是否存在差异。方法:通过采用酶联免疫吸附试验(ELISA)检测确诊的15例急性期KD患儿、12例HSP患儿及10名健康对照组儿童的血浆干扰素诱导蛋白10(IP-10)和单核细胞趋化蛋白1(MCP-1)水平,判断KD与HSP发病机制中单核细胞参与的情况。结果:KD组IP-10(394.2±176.4)pg/m l和MCP-1(420.5±163.4)pg/m l水平较HSP组IP-10(94.8±66.4)pg/m l和MCP-1(109.2±76.6)pg/m l水平均明显升高,差异性显著(P<0.05);但HSP组与对照组IP-10(76.4±46.5)pg/m l和MCP-1(87.7±47.8)pg/m l水平比较,差异不明显(P>0.05)。结论:单核细胞在KD发病机制中可能发挥着重要的作用;与其相比,在HSP发病机制中可能不涉及单核细胞参与。     

地塞米松对实验性自身免疫性脑脊髓炎大鼠MCP-1表达的影响

目的为探讨地塞米松(DXM)对实验性自身免疫性脑脊髓炎(EAE)大鼠临床指标和单核细胞趋化蛋白1(MCP1)mRNA的影响。方法将正常大鼠、完全抗原和百日咳毒素原液免疫后的大鼠免疫后7d,分成:正常大鼠、EAE组和DXM组。DXM组给予DXM腹腔注射,另外两组给予生理盐水注射。取脑和脊髓制成石蜡切片,进行苏木素伊红(HE)染色和MCP1mRNA的原位杂交(ISH),并比较各项临床指标。结果DXM组的发病率、临床评分和MCP1mRNA的阳性细胞数显著性降低(P<0.01)。结论进一步证实DXM的使用可对EAE有治疗作用。     

Interleukin-34 accelerates intrauterine adhesions progress related to CX3CR1+ monocytes/macrophages

Intrauterine adhesions (IUA) are characterized by endometrial fibrosis and impose a great challenge for female reproduction. IL-34 is profoundly involved in various fibrotic diseases through regulating the survival, proliferation, and differentiation of monocytes/macrophages. However, it remains unclear how IL-34 regulates monocytes/macrophages in context of IUA. Here, we showed that the expression level of IL-34 and the amount of CX3CR1+ monocytes/macrophages were significantly increased in endometrial tissues of IUA patients. IL-34 promoted the differentiation of monocytes/macrophages, which express CX3CR1 via CSF-1R/P13K/Akt pathway in vitro. Moreover, IL-34-induced CX3CR1+ monocytes/macrophages promoted the differentiation of endometrial stromal cells into myofibroblasts. Of note, IL-34 caused endometrial fibrosis and increased the amount of CX3CR1+ monocytes/macrophages in endometrial tissues in vivo. IL-34 modulated endometrial fibrosis by regulating monocytes/macrophages since the elimination of endometrial monocytes/macrophages significantly suppressed the profibrotic function of IL-34. Finally, blocking of IL-34 in the LPS-IUA model resulted in the improvement of endometrial fibrosis and decreased number of CX3CR1+ monocytes/macrophages. Our studies uncover the novel mechanism of interaction between IL-34-induced CX3CR1+ monocytes/macrophages and endometrial stromal cells in endometrial fibrosis pathogenesis, and highlight IL-34 as a critical target for treating IUA.     

Evaluation of monocyte to high-density lipoprotein ratio,lymphocytes, monocytes,and platelets in psoriasis

BackgroundPsoriasis is a chronic immune-mediated inflammatory skin disease that is associated with cardiovascular comorbidities.ObjectivesThe objective of this retrospective study is to assess the C-reactive protein, monocyte-to-high-density-lipoprotein ratio, neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, and monocyte-to-lymphocyte ratio as inflammatory markers in patients with psoriasis and to search for a relationship between these parameters and psoriasis severity, as defined by the psoriasis area and severity index.MethodsThere were 94 patients with psoriasis and 118 healthy controls enrolled in the study. The C-reactive protein, monocyte-to-high-density-lipoprotein ratio, neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, and monocyte-to-lymphocyte ratio values of two groups were retrospectively evaluated.ResultsStatistically significant differences were observed in terms of C-reactive protein, monocyte-to-high-density-lipoprotein ratio, neutrophil-to-lymphocyte ratio and monocyte-to-lymphocyte ratio between the patient and control groups (p = 0.001, p = 0.003, p = 0.038, and p = 0.007, respectively). Positive correlations were found between the psoriasis area and severity index and the values of C-reactive protein, monocyte-to-high-density-lipoprotein ratio, neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, and monocyte-to-lymphocyte ratio (r: 0.381; p < 0.01, r: 0.203; p < 0.05, r: 0.268; p < 0.01, r: 0.374; p < 0.01, r: 0.294; p < 0.01, respectively).Study limitationsThe small sample size and the retrospective design of the study are limitations.ConclusionElevated C-reactive protein, monocyte-to-high-density-lipoprotein ratio, neutrophil-to-lymphocyte ratio, and monocyte-to-lymphocyte ratio were significantly associated with psoriasis. A positive correlation between C-reactive protein and monocyte-to-high-density-lipoprotein ratio leads to the suggestion that monocyte-to-high-density-lipoprotein ratio might be a reliable parameter in psoriasis during the follow-up. The relationship between the diasease and inflammatory parameters might provide early detection of cardiovascular morbidities in psoriasis patients.