白细胞介素27在抗病毒免疫中的作用及临床应用前景

IL-27是IL-6/IL-12家族细胞因子,可发挥广泛的免疫调节作用.IL-27可通过STAT1依赖或者非依赖途径抑制GATA-3(Th2分化的关键转录因子),从而有利于Th1的分化.IL-27引起naive T细胞产生细胞间黏附分子1,以STAT1依赖方式有利于Th1的分化.IL-27体外还可通过诱导STAT1抑制...     

肺炎支原体肺炎患儿血清细胞因子、高敏C反应蛋白、总免疫球蛋白及补体C的检测及其临床意义

目的 探讨检测肺炎支原体肺炎(MPP)患儿血清白细胞介素(IL)-6、IL-8、肿瘤坏死因子(TNF)-α、高敏C-反应蛋白(hs-CRP)、总免疫球蛋白(Ig)、补体C的临床意义.方法 选择61例MPP患儿(观察组)和60例健康儿童(对照组)为研究对象,IL-6、IL-8采用酶联免疫吸附试验方法测定,TNF-α采用γ放射免疫计数器检测,hs-CRP、总Ig、补体C采用速率散射比浊法测定.结果 观察组血清IL-6为(109.31±54.72)ng/L、IL-8为(128.19±65.87)ng/L、血清hs-CRP为(34.13±19.21)mg/L、总Ig为(12.62±5.51)g/L、补体C为(2.98±0.97)g/L,与对照组的(67.23±32.18)ng/L、(31.78±8.91)ng/L、(1.62±1.34)g/L、(6.71±3.65)g/L、(1.46±0.45)g/L比较均显著上升,差异有统计学意义(P＜0.05或＜0.01);两组血清TNF-α水平差异无统计学意义(P＞0.05).结论 IL-6、IL-8、hs-CRP、总Ig及补体C在小儿MPP中起重要作用,检测IL-6、IL-8、hs-CRP、总Ig及补体C的变化对判定病情和预后有一定的临床应用价值.

Abstract：

Objective To investigate the clinical significance of serum interleukin (IL)-6,IL-8,tumor necrosis factor (TNF)- α, high-sensitivity C-reactive protein (hs-C RP), total immunoglobulin (Ig) and complement C levels in children with mycoplasma pneumoniae pneumonia (MPP). Methods Sixty-one cases of children with MPP (observation group) and 60 healthy children (control group) were selected. The serum IL-6 and IL-8 levels were tested by enzyme linked immunosorbent assay(ELISA) method; the serum TNF-α level was tested by γ radioimmunoassay (RIA) counter; the serum hs-CRP, total Ig and complement C levels were tested by rate nephelometry method. Results The serum IL-6 concentration was (109.31 ±54.72) ng/L, IL-8 concentration was (128.19 ±65.87) ng/L, hs-CRP concentration was (34.13 ± 19.21) mg/L, total Ig concentration was (12.62 ± 5.51) g/L and complement C concentration was (2.98 ± 0.97) g/L in the observation group, and they were higher than those in the control group [(67.23 ±32.18) ng/L, (31.78 ±8.91) ng/L, (1.62 ±1.34) g/L, (6.71 ±3.65) g/L, (1.46 ±0.45) g/L]. The differences were significant (P ＜ 0.05 or ＜ 0.01). The serum TNF- t level between two groups had no significant difference (P＞ 0.05). Conclusions The serum cytokines IL-6 and IL-8, hs-CRP, total Ig and complement C play an important role in MPP. It has important significance to detect the serum cytokines IL-6 and IL-8, hs-CRP, total Ig and complement C levels in children with MPP.     

促炎症细胞因子、T细胞亚群在小儿过敏性紫癜不同病期的变化

目的：探讨促炎症细胞因子（ＩＬ－６１、ＩＬ－８、ＴＮＦ－α）以及Ｔ细胞亚群在小儿过敏性紫癜发病中的作用。方法：采用双抗体夹心ＥＬＩＳＡ法检测３０例急性期２１例恢复期及２８例健康儿童血清及外周血单个核细胞（ＰＢＭＣ）培养上清液ＩＬ－６、ＩＬ－８及ＴＮＦ－α水平,以及外周血Ｔ细胞及其亚群的变化。结果：急性期血清及ＰＢＭＣ上清液ＩＬ－６、ＩＬ－８、ＴＮＦ－α水平明显高于恢复期和对照,且以ＩＬ－８、ＴＮＦ     

多发伤后血清细胞因子水平的动态观察

目的 检测多发伤后血清中各种细胞因子的水平,探讨其意义。方法 研究对象为多发伤创伤病人２０例。于伤１－７天,每日采空腹血样,用双抗体夹心酶联免疫法分别检测血清中肿瘤坏死因子,白细胞介素１β,６及粒细胞集落刺激因子,并进行了动态观察。结果 多发伤组ＴＮＦ－α,ＩＬ－２,ＩＬ－６明显高于对照组,而且在伤情严重的病人中ＴＮＦ－α和ＩＬ－２升高更为明显,Ｇ－ＣＳＦ的升高与严重感染有关。,     

白介素35在炎性肠疾病中的抗炎作用机制

目的: 研究IL-35在炎性肠疾病中的抗炎作用及相关机制。方法: BALB/c雌性小鼠共30只,随机分为对照组、模型组（口服4%葡聚糖硫酸钠7 d）、IL-35组（口服4%葡聚糖硫酸钠7 d,第2~5天腹腔注射IL-35 2 μg/d）,每组10只。每天对小鼠进行疾病活动指数（DAI）评分;7 d后处死小鼠,留取血清和肠道组织,观察结肠大体形态;HE染色观察各组结肠组织病理形态变化;流式细胞术检测各组结肠组织中巨噬细胞极化情况;实时定量RT-PCR检测各组结肠组织中细胞因子IL-6、TNF-α、γ干扰素（IFN-γ）、IL-10和Src同源系列2结构域的肌醇5-磷酸酶1（SHIP1）的mRNA表达量;免疫组织化学法检测各组结肠组织中SHIP1的表达及分布情况;蛋白质印迹法检测各组结肠组织中SHIP1蛋白的表达。结果: 模型组在实验过程中DAI评分较对照组增加,而IL-35组自第4天起DAI评分较模型组减少（均P < 0.01）;与对照组比较,模型组结肠明显缩短（P < 0.05）,而IL-35组的结肠长度长于模型组,但差异无统计学意义（P > 0.05）;与模型组比较,IL-35组炎症细胞浸润减少、黏膜组织炎症评分和腺窝破坏组织评分较模型组减少（均P < 0.05）;IL-35组结肠组织中促炎因子IL-6、TNF-α和IFN-γ的mRNA相对表达量较模型组减少,而抑炎因子IL-10的mRNA相对表达量较模型组增加（均P < 0.05）;与对照组比较,模型组M1型巨噬细胞比例增加（P < 0.05）,而IL-35组M1型巨噬细胞的比例较模型组减少（P < 0.05）;IL-35组小鼠结肠组织中SHIP1 mRNA和蛋白相对表达量均较模型组增加（均P < 0.05）。结论: 在炎性肠疾病中,IL-35可以通过调控SHIP1表达抑制M1型巨噬细胞极化,以及调节炎症因子的表达发挥抗炎作用。     

机械通气模式治疗早产儿呼吸窘迫综合征的疗效

目的探讨压力支持通气(PSV)联合容量保证通气(VGV)模式与同步间歇指令通气(SIMV)联合VGV模式,对早产儿呼吸窘迫综合征(RDS)的疗效,以及白细胞介素(IL)-17对RDS早产儿预后判断价值。 方法选择2013年1月1日至2017年6月30日,广西壮族自治区妇幼保健院新生儿重症监护病房(NICU)收治的68例出生时胎龄<37周的RDS早产儿为研究对象。通过在线随机分配网站,将68例早产儿随机分为SIMV＋VGV组(n＝34,接受SIMV＋VGV模式治疗)与PSV＋VGV组(n＝34,接受PSV＋VGV模式治疗)。对所有早产儿均于出生后2～12 h内,采用肺表面活性物质治疗。采用酶联免疫吸附测定(ELISA)法,检测所有早产儿机械通气治疗前及治疗后(出生28 d后)血清IL-17水平。采用成组t检验,对2组早产儿出生胎龄、出生体重及机械通气治疗前、后血清IL-17水平等进行统计学比较。采用χ²检验或连续性校正χ²检验,对2组早产儿性别、娩出方式构成比,早产儿脑室出血、早产儿视网膜病、气管拔管后肺不张发生率,氧依赖率、再插管率、死亡率及母亲产前激素使用率等进行比较。绘制机械通气治疗前血清IL-17水平预测RDS早产儿预后(死亡、存活)的受试者工作特征(ROC)曲线,计算ROC曲线下面积(ROC-AUC),根据约登指数最大原则,确定机械通气治疗前血清IL-17水平预测RDS早产儿预后的最佳临界值,并计算其敏感度和特异度。本研究遵循的程序符合2013年修订的《世界医学协会赫尔辛基宣言》要求。 结果①2组早产儿出生胎龄、出生体重,性别、娩出方式构成比,早产儿机械通气治疗前血清IL-17水平及母亲产前激素使用率等一般临床资料比较,差异均无统计学意义(P>0.05)。②PSV＋VGV组RDS早产儿出生28 d后的氧依赖率、气管拔管后肺不张发生率、再插管率分别为5.9%(2/34)、8.8%(3/34)、2.9%(1/34),均显著低于SIMV＋VGV组的23.5%(8/34)、35.3%(12/34)、67.6%(23/34),2组比较,差异均有统计学意义(χ²＝4.221、6.928、31.167,P＝0.040、0.008、<0.001)。③SIMV＋VGV组、PSV＋VGV组早产儿治疗后血清IL-17水平分别为(1 740.8±522.6)pg/mL与(519.3±187.4)pg/mL,均显著低于治疗前的(2 227.3±882.9)pg/mL与(2 397.1±795.9)pg/mL,差异均有统计学意义(t＝11.035、2.578,P<0.001、＝0.016);并且SIMV＋VGV组早产儿治疗后血清IL-17水平显著高于PSV＋VGV组,2组比较,差异有统计学意义(t＝－12.83,P<0.001)。④机械通气治疗前,死亡早产儿血清IL-17水平显著高于存活早产儿,并且差异有统计学意义(t＝3.146,P＝0.009)。机械通气治疗后,死亡与存活早产儿血清IL-17水平均显著下降,但是死亡早产儿血清IL-17水平仍然显著高于存活早产儿,差异亦有统计学意义(t＝4.000,P＝0.002)。⑤机械通气治疗前血清IL-17水平预测RDS早产儿预后的ROC-AUC为0.810(95%CI：0.627～0.993,P＝0.001)。根据约登指数最大原则,机械通气治疗前血清IL-17水平预测RDS早产儿预后的最佳临界值为2 759.1 pg/mL,而且预测RDS早产儿预后的敏感度为81.8%,特异度为91.2%。 结论PSV联合VGV模式治疗RDS早产儿,可显著降低其出生28 d后氧依赖率、气管拔管后肺不张发生率、再插管率,降低RDS早产儿血清IL-17水平。RDS早产儿机械通气治疗前血清IL-17水平对其预后具有预测价值。     

Interleukins as new prognostic genetic biomarkers in non-small cell lung cancer

Background

Surgery is the standard treatment for early-stage NSCLC, and platinum-based chemotherapy remains as the treatment of choice for advanced-stage NSCLC patients with naïve EGFR status. However, overall 5-years relative survival rates are low. Interleukins (ILs) are crucial for processes associated with tumor development. In NSCLC, IL1B, IL6, IL12A, IL13 and IL16 gene polymorphisms may contribute to individual variation in terms of patient survival. The purpose of this study was to evaluate the association between IL gene polymorphisms and survival in NSCLC patients.

姜黄素对骨髓间充质干细胞诱导肾移植免疫耐受的影响

背景：已有研究显示在大鼠肾移植时连续给予1×10⁷细胞浓度的骨髓间充质干细胞可诱导免疫耐受,但临床上尚未发现姜黄素对肾移植具有免疫调节作用。目的：在对肾移植后的大鼠给予骨髓间充质干细胞的基础上,同时给予不同剂量姜黄素,观察其免疫耐受的效果。方法：建立大鼠肾移植模型,随机分为4组：纯肾移植组,无治疗措施;骨髓间充质干细胞组：关腹前左骼静脉注射1×10⁷/kg骨髓间充质干细胞,第2天起尾静脉注射等量细胞,共10 d;骨髓间充质干细胞+低/高剂量姜黄素组：除给予骨髓间充质干细胞外,分别以2,10 mg/kg姜黄素溶液灌胃,共10 d。免疫组织化学染色法检测各组肾组织中转化生长因子β1的蛋白表达水平,酶联免疫吸附法检测血清中白细胞介素2,6水平。结果与结论：大鼠经肾移植后,纯肾移植组中肾小管上皮细胞以及间质细胞的转化生长因子β1蛋白表达、白细胞介素2,6水平均高于其他各组(P < 0.05)。与骨髓间充质干细胞组比较,骨髓间充质干细胞+低/高剂量姜黄素组的转化生长因子β1的蛋白表达降低(P < 0.05),血清白细胞介素2,6水平均低于骨髓间充质干细胞组(P < 0.05)。结果证实,大鼠肾移植时同时给予姜黄素与骨髓间充质干细胞注射,可有效地进行免疫调节,抑制性免疫排斥反应的发生,保护肾功能。 中国组织工程研究杂志出版内容重点：干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程     

IL-2, IL-5, TNF-α and IFN-γ mRNA expression in epidermal keratinocytes of systemic lupus erythematosus skin lesions

OBJECTIVE:

To analyze cytokine gene expression in keratinocytes from patients with systemic lupus erythematosus (SLE).

INTRODUCTION:

Keratinocytes represent 95% of epidermal cells and can secrete several cytokines.

METHODS:

Keratinocytes were obtained by laser microdissection from 21 patients with SLE (10 discoid and 11 acute lesions) at involved and uninvolved sites. All patients were receiving a low/moderate prednisone dose and 18 were receiving chloroquine diphosphate. IL-2, IL-5, TNF-α and IFN-γ gene expression was evaluated by real-time PCR and expressed as the ratio (R) to a pool of skin samples from 12 healthy volunteers.

RESULTS:

Heterogeneity in cytokine gene expression was found among patients with SLE. Eighteen of 38 valid SLE samples (47%) presented overexpression (R>1) of at least one cytokine. Lesional skin samples tended to show higher cytokine expression than samples from uninvolved skin (p = 0.06). IL-5 and IFN-γ were the most commonly overexpressed cytokines. Samples with cytokine overexpression corresponded to more extensive and severe lesions. Prednisone dose did not differ between samples without cytokine overexpression (15.71±3.45 mg/day) and those with overexpressed cytokines (12.68±5.41 mg/day) (p = 0.216). Samples from all patients not receiving diphosphate chloroquine had at least one overexpressed cytokine.

CONCLUSIONS:

The heterogeneous keratinocyte cytokine gene expression reflects the complex immunological and inflammatory background in SLE. Patients with severe/extensive skin lesions showed a higher frequency of cytokine gene overexpression. Increased IFN-γ and IL-5 expression suggests that Th1 and Th2 cells are involved in SLE skin inflammation. The possibility that prednisone and antimalarial drugs may have contributed to low cytokine gene expression in some samples cannot be ruled out.