肠易激综合征患者血清IL-10、IL-12及皮质醇变化及其意义

目的:探讨肠易激综合征(IBS)患者血清白细胞介素10(IL-10)白细胞介素12(IL-12)和皮质醇(CO)浓度变化及它们在IBS中的可能作用和临床意义.方法:随机抽取来源于门诊和住院IBS患者和健康志愿者血清,采用放射免疫法测量血清IL-10、IL-12和CO浓度.结果:腹泻型IBS病人血清IL-10和CO含量显著高于正常(P＜0.05),便秘型IBS病人血清内IL-10和CO水平也高于正常对照(P＜0.05).腹泻型和便秘型IBS病人血清内IL-10和CO水平之间差别无统计学意义(P＞0.05).腹泻型IBS组血清IL-12含量比正常组低(P＜0.05),便秘型IBS组血清内IL-12水平也低于正常对照组(P＜0.05).腹泻型和便秘型组之间血清内IL-12水平差别无统计学意义(P＞0.05).结论:炎症因子和应激可能参与IBS发病.     

冠心病患者血清IL-37水平及其与血清IL-6、IL-10、CRP水平的关系

目的:探讨不同类型冠心病患者血清白介素-37(IL-37)的水平及其与血清白介素-6(IL-6)、白介素-10(IL-10)、C反应蛋白(CRP)水平的关系。方法:选取急性心肌梗死患者20例(AMI组)、不稳定性心绞痛患者26例(UAP组)、稳定性心绞痛患者20例(SAP组)及冠脉造影正常者26例(CON组)为研究对象,采用酶联免疫吸附法(ELISA)测定其血清IL-37、IL-6、IL-10和CRP的水平并分析其相关性。结果:1UAP组、AMI组血清IL-37水平均较对照组(CON组)显著增高(p0.05),而SAP组与CON组比较无明显差异(P0.05)。2冠心病患者的血清IL-37水平与其血清CRP(r=0.3,P0.05)、IL-6(r=0.4,P0.05)水平均存在显著正相关性,与IL-10水平无明显相关(P=0.16)。当排除SAP组患者后,冠心病患者的血清IL-37水平与CRP(r=0.3,P0.05)、IL-6(r=0.5,P0.05)、IL-10(r=0.2,P0.05)水平均显著相关。结论:急性冠脉综合症(ACS)患者的血清IL-37水平显著升高,并与IL-6、IL-10、CRP水平相关,可能参与了ACS发病过程中的炎症反应。     

乳果糖联合培菲康预防肝硬化自发性细菌性腹膜炎的疗效观察

目的 探讨乳果糖联合培菲康预防肝硬化自发性细菌性腹膜炎(SBP)的疗效.方法 选择肝硬化失代偿期患者186例,随机分为乳果糖与培菲康联合治疗组和常规抗生素治疗组各93例,住院期间同时予以护肝利尿及对症支持治疗,用药3个月进行观察,并采集腹水样本,采用ELISA方法进行TNF-α和IL-6的检测.结果 肝硬化患者应用乳果糖与培菲康联合治疗组SBP发生率为12.9％,而常规抗生素治疗组SBP发生率为21.5％,二者间比较差异有统计学意义(P＜0.05).SBP发生患者腹水TNF-α的水平为(1650±126) pg/mL,而未发生SBP为(1312±289) pg/mL,两组间比较差异有统计学意义(P＜0.05).SBP发生患者腹水IL-6的水平为(2566±138) pg/mL,而未发生SBP患者中为(924±251) pg/mL,两组间比较差异有统计学意义(P＜0.01).结论 肝硬化患者应用乳果糖联合培菲康可显著降低SBP的发生率.腹水TNF-α和IL-6的水平可监测肝硬化患者SBP的发生.     

儿童真菌性肠炎患者血清IL-27增高及其意义

目的 评价血清IL-27对儿童真菌性肠炎的诊断价值.方法 收集89例儿童真菌性肠炎,61例儿童病毒性肠炎和41例健康对照者的临床资料及血清.酶联免疫吸附试验(ELISA)检测血清中IL-27和降钙素原(Procalcitionin,PCT)的水平,全自动血球分析仪检测各项白细胞参数,分析IL-27与白细胞计数和PCT的相关性,采用受试者工作曲线(ROC)法评价血清IL-27对儿童真菌性肠炎患者的诊断价值.结果 儿童真菌性肠炎患者血清IL-27水平较儿童病毒性肠炎组和健康对照组显著增高(P＜0.01),儿童真菌性肠炎患者IL-27的水平与白细胞计数无显著相关性(R=-0.198,P＞0.05),与PCT水平呈显著正相关(R=0.419,P＜0.01).IL-27诊断儿童真菌性肠炎的ROC曲线下面积为0.82(95％可信区间:0.63～0.89,P＜0.01).最佳诊断界值为80.5 pg/mL,敏感性为0.75,特异性为0.79.结论 IL-27对儿童真菌性肠炎具有较高的诊断价值.     

胃癌患者血清IL-17、IL-6和TGF-β1水平及其临床意义

目的:探讨胃癌患者外周血中白介素17(IL-17)、白介素6(IL-6)和转化生长因子-β1(TGF-β1)的表达水平及其临床意义。方法:选择2009年1月~2010年1月我院收治的50例胃癌患者(观察组)及同期50例健康对照者(对照组)为研究对象,采用ELISA法检测和比较其外周血中IL-17、IL-6和TGF-β1的水平,并分析胃癌患者外周血中IL-17、IL-6和TGF-β1水平与其临床病理特征之间的相关性。结果:观察组患者外周血中IL-17、IL-6和TGF-β1的水平分别为(8.51±2.68)pg/ml、(7.81±5.41)pg/ml和(1093.42±831.21)pg/ml,均明显高于健康对照组(P0.01)。胃癌患者的血清IL-17、TGF-β1的水平与其年龄、性别、临床分期、有无淋巴结转移、分化程度、肿瘤部位及大小均无明显相关性(P0.05);而血清IL-6的水平与肿瘤的大小相关(P0.05),但与其他临床病理特征无关(P0.05);血清IL-17水平与IL-6、TGF-β1的水平均无明显相关性(P0.05)。结论:血清IL-17、IL-6和TGF-β1水平的升高与胃癌的发生有关,但IL-6和TGF-β1可能不是血清中IL-17生成的诱导因子。     

变应性鼻炎患者血清IL-17和IL-17R表达及其与IgE的相关性

目的:探讨变应性鼻炎患者血清中IL-17及其受体的表达,及其与血清中总IgE的关系.方法:采用酶联免疫法检测51例健康志愿者(对照组)和37例变应性鼻炎患者(实验组)血清中IL-17,IL-17R及IgE的含量.结果:与对照组相比,变应性鼻炎患者血清IL-17,IL-17R及IgE的含量均明显升高.IL-17与变应性鼻炎患者血清中IgE成正相关(r=0.9678,P＜0.05),而IL-17R与IgE无明显相关性.结论:IL-17和IL-17R均参与变应性鼻炎的发病过程,可作为诊断变应性鼻炎的新指标,且降低IL-17的含量有助于变应性鼻炎的临床治疗.     

卡泊三醇对白癜风患者血清和皮肤组织中IL-18 及IFN-r水平的影响

目的：探讨卡泊三醇对白癜风患者血清和皮肤组织中IL-18 及IFN-r水平的影响。方法：收集我院收治的白癜风患者122例, 随机分为实验组和对照组。对照组予外用补骨脂酊治疗,实验组给予外用卡泊三醇软膏。观察并比较两组患者治疗前后皮损面 积、不良反应发生情况以及血清和皮肤组织液中IL-18 及IFN-r水平的变化情况。结果：与治疗前相比,两组患者治疗后白斑皮损 面积均显著缩小(P＜0.05),血清及皮肤组织液IL-8 与INF-酌水平均明显降低(P＜0.05)。与对照组相比,实验组治疗后白斑皮损面 积更小(P＜0.05),血清及皮肤组织液IL-18及IFN-r含量较低(P＜0.05)。结论：卡泊三醇能够有效改善白癜风患者的临床症状,且 安全性较高,值得临床推广应用,这可能与其降低白癜风患者血清及皮肤组织液中IL-18 及IFN-酌水平有关。     

奥曲肽治疗急性弥漫性腹膜炎术后患者的临床疗效及对血清内毒素和TNF-α、IL-6水平的影响

目的:探讨奥曲肽治疗急性弥漫性腹膜炎术后患者的临床疗效及对血清内毒素和肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)水平的影响。方法:收集我院2014年5月~2016年5月收治的86例急性弥漫性腹膜炎患者,按照不同治疗方式分作对照组与研究组,每组43例。两组均采用手术治疗,对照组术后予以常规治疗,研究组基于对照组加以奥曲肽治疗,两组均持续治疗14天。比较两组临床疗效,治疗前后血清内毒素和TNF-α,IL-6水平的变化及不良反应发生情况。结果:治疗后,研究组总有效率显著高于对照组(P0.05);两组血清内毒素和TNF-α、IL-6水平均较治疗前显著下降,且研究组上述指标明显低于对照组(P0.05)。研究组不良反应发生率显著低于对照组(P0.05)。结论:奥曲肽可显著提高急性弥漫性腹膜炎术后患者的临床疗效,有效降低血清内毒素和IL-6、TNF-α水平,且安全性较高。     

肝病患者肝组织IL-18结合蛋白的表达和分析

目的:探讨肝病患者肝脏组织白细胞介素18结合蛋白(interleukin-18 binding protein,IL-18BP)的表达水平及临床意义.方法:应用免疫组织化学技术检测41例原发性肝癌、9例慢性乙型肝炎、11例肝硬化、和5例正常肝组织中IL-18BP的表达情况,同时检测患者外周血IL-18BP的含量.结果:原发性肝癌的癌周组织IL-18BP表达量最高,与癌组织、肝硬化组织、慢性肝炎组织和正常肝组织评分值组间比较差异有统计学意义(P＜0.01);表达强度:癌周组织＞肝硬化＞肝癌＞慢性肝炎,正常组织无阳性表达(P＜0.01).IL-18BP在组织中的表达和血清中的含量相一致.结论:肝病患者IL-18BP表达水平随病情加重呈递增趋势.     

血清IL-2、IL-16水平的变化和艾滋病患者机会性感染的关系探究

目的:研究血清IL-2、IL-16水平的变化和艾滋病患者机会性感染的关系。方法:选择2016年1月至2018年10月在我院接受治疗的艾滋病患者120例作为观察组,根据美国疾病预防控制中心及世界卫生组织标准将其分为三期,A期24例,B期41例,C期55例,其中96例为机会性感染者。同期选择20例在本院进行正常体检者作为对照组。观察组采用高效抗逆转录病毒疗法(HAART)治疗。检测和比较各期艾滋病患者与对照组、机会性感染组与非机会性感染组、艾滋病各期治疗前后血清白介素-2(IL-2)、白介素-16(IL-16)、CD4~+细胞、CD8~+细胞计数的差异。结果:观察组各期艾滋病患者血清IL-2、IL-16水平明显低于对照组,且C期患者血清IL-2、IL-16水平均显著低于A、B期患者(P0.05);观察组及各期患者CD4~+细胞计数均低于对照组,CD8~+细胞计数均高于对照组,且C期患者CD4~+细胞计数均显著低于A、B期患者,CD8~+细胞计数均高于A、B期患者(P0.05);机会性感染组患者血清IL-2、IL-16水平明显低于非机会性感染组(P0.05);治疗后,观察组各期患者血清IL-2、IL-16水平较治疗前明显显著升高,且A期患者血清IL-2、IL-16显著高于B、C期患者(P0.05)。结论:艾滋病机会性感染患者血清IL-2、IL-16水平均显著降低,通过监测血清IL-2、IL-16水平可积极防治机会性感染。     

IL-23 and IL-17 in tuberculosis

Tuberculosis is a chronic disease requiring the constant expression of cellular immunity to limit bacterial growth. The constant expression of immunity also results in chronic inflammation, which requires regulation. While IFN-gamma-producing CD4+ T helper cells (Th1) are required for control of bacterial growth they also initiate and maintain a mononuclear inflammatory response. Other T cell subsets are induced by Mycobacterium tuberculosis (Mtb) infection including those able to produce IL-17 (Th17). IL-17 is a potent inflammatory cytokine capable of inducing chemokine expression and recruitment of cells to parenchymal tissue. Both the IL-17 and the Th17 response to Mtb are largely dependent upon IL-23. Although both Th17 and Th1 cells are induced following primary infection with Mtb, the protective response is significantly altered in the absence of Th1 cells but not in the absence of Th17. In contrast, in vaccinated animals the absence of memory Th17 cells results in loss of both the accelerated memory Th1 response and protection. Th1 and Th17 responses cross-regulate each other during mycobacterial infection and this may be important for immunopathologic consequences not only in tuberculosis but also other mycobacterial infections.     

IL-4-supported induction of cytolytic T lymphocytes requires IL-2 and IL-6

Previous work indicated that a CTL response can be generated by the combination of IL-2 plus IL-6 or IL-4 alone. Because of the ubiquitous production of IL-6 and its apparent ability to induce IL-2, we explored the interdependence of these lymphokines in supporting a CTL response from murine thymocytes. For thymocytes cultured in IL-4, further addition of IL-6 enhanced thymocyte proliferation. In addition, a role for IL-6 in thymocyte activation was indicated by the ability of anti-IL-6 mAb to block both IL-4-directed proliferation and the cytotoxic response found in the presence of IL-4. The addition of IL-2 to limiting doses of IL-4 augmented the CTL response; however, the response to high levels of IL-4 was not augmented by addition of IL-2. Consistent with this apparent involvement of IL-2 in the IL-4-mediated response we found: (a) that mAb to IL-2 significantly reduced the CTL response generated in the presence of IL-4; (b) that IL-2 activity was present in culture supernatant following incubation of thymocytes with high levels of IL-4; and (c) that enhanced IL-2 receptor expression found in the presence of IL-4 was blocked with the addition of anti-IL-2 antibody to the thymocyte culture. In contrast to the data for proliferation, anti-IL-4 mAb had no effect on the generation of CTL in the presence of IL-2 + IL-6 but readily blocked the CTL response to IL-4. These results indicate that, for thymocyte responders, the CD8+ CTL generated in the presence of IL-4 require both IL-2 and IL-6.     

IL-1，IL-6，IL-8 与胃癌的关系

胃癌是常见的恶性肿瘤之一,在我国其发病率居各类肿瘤前列,导致的死亡人数占所有肿瘤的四分之一,而且每年有近40万新增的胃癌病人,但是其早期诊断率低于20%,胃癌已经成为危害人民健康的最严重的疾病之一。白细胞介素(interleukin,IL)作为在白细胞或免疫细胞间相互作用的淋巴因子,不仅在介导T、B细胞活化、增殖与分化以及炎症反应中起着重要作用,近年来,越来越多的学者发现其与肿瘤的发生及发展也有着密不可分的联系。目前为止,已经发现了29种白细胞介素,分别被命名为IL-1~IL-29,它们各自承担着相应的使命。国内外大量实验及文献表明,IL-1,IL-6,IL-8和胃癌有着密切的关系,这对于胃癌的早期诊断及治疗提出了新的思路,进而提高胃癌的早期诊断率,改善胃癌的治疗状况。本文对IL-1,IL-6,IL-8的来源、分子结构及受体方面进行简要概述,同时阐述了其生物学特性及与胃癌的关系。     

Influence of acute alcohol intake and alcohol withdrawal on circulating levels of IL-6, IL-8, IL-10 and IL-12

Cytokine balance alterations are responsible for some of the systemic and hepatic manifestations of alcoholism. The present study was aimed to evaluate the influence of both acute alcohol abstinence (in alcoholics) and acute alcohol intake (in healthy subjects) on serum IL-6, IL-8, IL-10, and IL-12 levels. Serum cytokine concentrations were determined on admission and after a median of 6 days of ethanol abstinence in 29 patients with alcohol withdrawal syndrome. The same determinations were made in five healthy volunteers at baseline and after 36 h of a single 60 g-dose alcohol intake. Increased serum levels of IL-6, IL-10 and, to a lesser extent IL-8, declined in the few days after alcohol abstinence in patients with alcohol withdrawal syndrome. Serum IL-8 values increased after alcohol intake in healthy subjects. Rapid variation of serum cytokine levels along with alcohol intake or abstinence should be taken into account in cytokine studies in alcohol abusers.     

Structures and biological functions of IL-31 and IL-31 receptors

Interleukin-31, produced mainly by activated CD4⁺ T cells, is a newly discovered member of the gp130/IL-6 cytokine family. Unlike all the other family members, IL-31 does not engage gp130. Its receptor heterodimer consists of a unique gp130-like receptor chain IL-31RA, and the receptor subunit OSMRβ that is shared with another family member oncostatin M (OSM). Binding of IL-31 to its receptor activates Jak/STAT, PI3K/AKT and MAPK pathways. IL-31 acts on a broad range of immune- and non-immune cells and therefore possesses potential pleiotropic physiological functions, including regulating hematopoiesis and immune response, causing inflammatory bowel disease, airway hypersensitivity and dermatitis. This review summarizes the recent findings on the biological characterization and physiological roles of IL-31 and its receptors.     

Circulating IL-6, IL-10, and TNF-alpha and IL-10/IL-6 and IL-10/TNF-alpha ratio profiles of polyparasitized individuals in rural and urban areas of gabon

Malaria, blood-borne filarial worms and intestinal parasites are all endemic in Gabon. This geographical co-distribution leads to polyparasitism and, consequently, the possibility of immune-mediated interactions among different parasite species. Intestinal protozoa and helminths could modulate antimalarial immunity, for example, thereby potentially increasing or reducing susceptibility to malaria. The aim of the study was to compare the cytokine levels and cytokine ratios according to parasitic profiles of the population to determine the potential role of co-endemic parasites in the malaria susceptibility of populations. Blood and stool samples were collected during cross-sectional surveys in five provinces of Gabon. Parasitological diagnosis was performed to detect plasmodial parasites, Loa loa, Mansonella perstans, intestinal helminths (STHs) and protozoan parasites. Nested PCR was used to detect submicroscopic plasmodial infection in individuals with negative blood smears. A cytometric bead array was used to quantify interleukin (IL)-6, IL-10 and tumour necrosis factor (TNF)-α in the plasma of subjects with different parasitological profiles. Median IL-6 and IL-10 levels and the median IL-10/TNF-α ratio were all significantly higher among individuals with Plasmodium (P.) falciparum infection than among other participants (p<0.0001). The median TNF-α level and IL-10/IL-6 ratio were higher in subjects with STHs (p = 0.09) and P. falciparum-intestinal protozoa co-infection (p = 0.04), respectively. IL-6 (r = -0.37; P<0.01) and IL-10 (r = -0.37; P<0.01) levels and the IL-10/TNF-α ratio (r = -0.36; P<0.01) correlated negatively with age. Among children under five years old, the IL-10/TNF-α and IL-10/IL-6 ratios were higher in those with intestinal protozoan infections than in uninfected children. The IL-10/TNF-α ratio was also higher in children aged 5–15 years and in adults harbouring blood-borne filariae than in their control counterparts, whereas the IL-10/IL-6 ratio was lower in those aged 5–15 years with filariae and intestinal parasites but higher in adults with intestinal parasitic infections. Asymptomatic malaria is associated with a strong polarization towards a regulatory immune response, presenting high circulating levels of IL-10. P. falciparum/intestinal protozoa co-infections were associated with an enhanced IL-10 response. Immunity against malaria could differ according to age and carriage of other parasites. Helminths and intestinal protozoa can play a role in the high susceptibility to malaria currently observed in some areas of Gabon, but further investigations are necessary.     

IL-6 and IL-1 synergize to stimulate IL-2 production and proliferation of peripheral T cells

Purified T cells can be induced to proliferate and to produce the autocrine growth factor IL-2 with mAb to the TCR and costimulatory cytokines. In a previous report we demonstrated that human IL-6 stimulates IL-2 production and proliferation of purified T cells, in conjunction with the insolubilized anti-TCR V beta 8 mAb, F23.1. Here we show that when CD4+ T cells are rigorously purified to greater than 99% CD4+CD8-, they respond only weakly to F23.1 and IL-6. Instead, there is an additional requirement for IL-1, which dramatically synergizes with IL-6 to induce prolonged (greater than 7 days) proliferative responses and IL-2 production. Similar results were observed when the highly mitogenic anti-CD3 mAb 145-2C11 was substituted for F23.1. The proliferation induced by F23.1, IL-1, and IL-6 was substantially (greater than 80%) inhibited by a mAb to mouse IL-2, and was not inhibited by an anti-IL-4-mAb. In accordance with this finding, medium conditioned by the activated CD4+ cells contained large amounts of IL-2, which increased over a 7-day culture period. These results demonstrate that IL-6 and IL-1 stimulate T cell proliferation by inducing production of the autocrine growth factor IL-2. In addition, the two lymphokines must be present simultaneously for activation to occur. The possible roles of IL-6 and IL-1 in IL-2 gene regulation and in Ag-induced T cell activation are discussed.