新生儿细菌感染时IL-8 IL-10 IL-13水平的研究及其临床意义(英文)

目的：新生儿因处于暂时性的免疫功能低下的状态而容易发生感染性疾病,也是新生儿发病和死亡的重要原因。寻找指标以早期诊断新生儿感染性疾病是临床和研究的重点之一。本研究探讨血清IL-8、IL-10、IL-13水平在新生儿细菌感染的早期诊断和疗效判断中的意义。方法：用ELISA测定3组血清各细胞因子的水平。感染组：21例细菌感染的足月新生儿。非感染组：20例非感染性疾病的足月新生儿。脐血组：30例正常足月新生儿。结果：感染组IL-8、IL-10和IL-13水平(87.0±82.6,35.1±34.8,23.2±46.2 pg/ml)较非感染组升高(56.6±13.2,21.6±12.9,12.0±32.3 pg/ml)(P<0.05);感染组治疗后IL-8和IL-10水平(51.2±3.1,18.5±3.3 pg/ml)较治疗前下降(P<0.05);非感染组IL-13较脐血组(1.2±0.3 pg/ml)显著升高(P<0.05),IL-8、IL-10在两组间无区别。结论：新生儿细菌感染时血清IL-8、IL-10和IL-13显著升高,可做为新生儿细菌感染的参考标志物,而IL-8和IL-10的变化有助于评估新生儿感染的治疗效果。［中国当代儿科杂志,2004, 6(5): 365-368］     

新生儿细菌感染时血清IL-8和IL-13水平变化

目的探讨血清IL-8和IL-13水平在新生儿细菌感染的早期诊断和临床转归中意义。方法用ELISA测定三组血清细胞因子的水平。感染组:21例细菌感染新生儿(治疗前和有效治疗后);非感染组:20例非感染性疾病新生儿;脐血组:30例正常新生儿。结果感染组IL-8和IL-13水平较非感染组升高(P<0.05);感染组治疗后IL-8水平较治疗前下降。结论新生儿细菌感染时血清IL-8和IL-13显著升高,可作为新生儿细菌感染的早期诊断指标,IL-8可用来评价疗效。     

IL-6和IL-8在诊断新生儿败血症中的价值研究

目的探讨白细胞介素-6(IL-6)、IL-8在新生儿败血症诊断中的临床价值。方法采用前瞻性研究设计,选取2014年8月至2015年2月患感染性疾病的新生儿共140例(败血症组49例,局部感染组91例)为研究对象,非感染性疾病的新生儿61例作为对照组,比较各组治疗前及治疗3 d后血清中IL-6和IL-8水平的差异,分析各指标诊断新生儿败血症的价值。结果治疗前败血症组IL-6、IL-8水平均高于局部感染组和对照组,IL-6和IL-8在局部感染组中水平均高于对照组(P0.05);治疗3 d后,败血症组IL-6水平均高于局部感染组和对照组,局部感染组IL-6水平高于对照组(P0.05),IL-8在各组间差异无统计学意义(P0.05)。治疗前ROC曲线分析显示:当IL-6取32 pg/m L时,敏感度、特异度和准确性分别为87.8%、79.6%、81.6%;当IL-8取54 pg/m L时,敏感度、特异度和准确性分别为77.6%、63.8%、67.2%;IL-6+IL-8联合诊断时,敏感度、特异度和准确性分别为71.4%、86.2%、82.6%。结论 IL-6、IL-8参与炎症反应,且两者水平与感染严重程度相关,IL-6诊断新生儿败血症的价值高于IL-8,且两者联合应用可提高新生儿败血症诊断的准确性。     

白细胞介素-6、白细胞介素-8、肿瘤坏死因子-α及可溶性髓样细胞触发受体-1在足月新生儿感染中的变化

目的 探讨白细胞介素(interleukin,IL)-6、IL-8、肿瘤坏死因子(tumor necrosis factor,TNF)-α、可溶性髓样细胞触发受体(soluble form of triggering receptor expressed on myeloid cells,sTREM)-1在足月新生儿感染中的变化,并比较四者的诊断价值.方法 以上海交通大学附属上海市儿童医院85例足月新生儿为研究对象,根据感染部位及程度分为全身感染组(27例)、局部感染组(28例)和非感染组(30例).应用流式微珠陈列法检测各组患儿IL-6、IL-8、TNF-α水平,应用酶联免疫法测定sTREM-1水平.结果 (1)不同感染组血清IL-6、IL-8、TNF-α、sTREM-1活性水平存在明显差异,四者平均水平均是全身感染组＞局部感染组＞非感染组(P均＜0.05).(2)全身感染组患儿中17例存活,10例死亡,死亡组患儿sTREM-1为(121.64 ±49.31) pg/ml,明显高于存活组[(73.13 ±34.92) pg/ml,P =0.006],但IL-6、IL-8、TNF-α水平,死亡组与存活组比较差异无统计学意义(P均＞0.05).(3) IL-6、IL-8、TNF-α、sTREM-1诊断价值比较:基于受试者工作特征曲线分析,最佳截断值为每个变量同时达到最大的灵敏度和特异度.在截断值sTREM-1 ≥43.75 pg/ml、IL-6≥89.80 pg/ml、IL-8≥569.55 pg/ml及TNF-α≥24.80 pg/ml为阳性标准时,各指标对诊断新生儿感染性疾病的灵敏度分别为85.5％、89.1％、70.1％和69.5％,特异度分别为80.0％、100％、100％和93.3％.各指标的曲线下面积(area under curve,AUC)均＞0.5,其中IL-6(AUC=0.981)＞sTREM-1(AUC=0.868)＞TNF-α(AUC=0.864)＞IL-8(AUC=0.852).sTREM-1与IL-6、IL-8、TNF-α均有相关性(Spearman等级相关系数分别为r=0.532,P＜0.01;r =0.420,P＜0.01;r=0.531,P＜0.01).结论 (1)血清IL-6、IL-8、TNF-α、sTREM-1水平在新生儿感染时均升高;(2)血清sTREM-1水平与预后有关;(3) sTREM-1与IL-6、IL-8、TNF-α有相关性.     

白细胞介素-6和白细胞介素-8在早期监测早产儿呼吸窘迫综合征中的意义

目的 探讨白细胞介素-6(IL-6)和白细胞介素-8(IL-8)在早期监测早产儿呼吸窘迫综合征(RDS)中的意义.方法 选择2012年7月至2013年3月本院新生儿重症监护室收治、除外先天畸形、感染、代谢性疾病、缺氧缺血性脑病、其他肺部疾病的早产儿,生后2h内取股静脉血2 ml,采用流式细胞仪测定血浆中IL-6、IL-8水平.按早产儿是否发生RDS分为RDS组和非RDS组.结果 RDS组20例,非RDS组80例,两组早产儿性别、胎龄、体重差异均无统计学意义(P＞0.05).RDS组血浆IL-6和IL-8水平均明显高于非RDS组[IL-6:(2155.3 ±200.3) pg/ml比(51.1±9.2) pg/ml,IL-8:(1625.2±154.2)pg/ml比(61.8±4.4) pg/ml],差异有统计学意义(P＜0.01).结论 在早产儿生后早期测定血浆IL-6和IL-8水平可用来探索早期RDS的发生,对RDS的早期监测和早期防治有一定的临床意义.     

脐血IL-6水平与新生儿败血症的早期诊断

为研究IL-6水平与新生儿宫内或产时感染所致败血症之间的关系.应用ELISA双夹心法检测了72例脐血清,其中正常52例,败血症20例.结果显示脐血组IL-6中位数0.024ng/ml(范围≤0.0221～0.0531ng/m1);败血症组中位数0.1730ng/ml(范围0.02660～1.2589ng/ml).经秩和检验,P＜0.0005(单侧).结论提示脐血IL-6水平与新生儿败血症的发生有一定关系,IL-6可作为新生儿败血症的早期诊断指标.     

肺炎相关脓毒症患儿血清白细胞介素-6和10的水平变化及意义

目的 本研究通过测定促炎和抗炎两方面的代表性细胞因子——白细胞介素( interleukin,IL)-6和IL-10,判断小儿肺炎相关脓毒症的炎症反应水平及其在病程中的变化.方法 将2008年9月至2009年3月收入PICU的62例肺炎患儿分为肺炎组(n=31)、脓毒症组(n=20)、严重脓毒症组(n=11),分别测定人PICU第1天和第4天的血清IL-6和IL-10水平.结果 严重脓毒症组患儿的小儿死亡危险评分Ⅲ及病死率显著高于肺炎组和脓毒症组,差异有统计学意义(P＜0.05).肺炎组、脓毒症组、严重脓毒症组患儿在入PICU第1天的血清IL-6水平依次递增,分别为(55.68±61.41) pg/ml、(57.46±96.56) pg/ml及(114.86±206.37) pg/ml,但差异不具有统计学意义(P ＞0.05);IL-10水平则依次递减,分别为(59.50±57.97) pg/ml、(41.27±28.37) pg/ml及(20.05±9.14) pg/ml,差异具有统计学意义(P＜0.05);IL-6/IL-10分别为1.51 ±2.42、1.48 ±2.50、14.47±26.97,差异具有统计学意义(P＜0.05).入PICU第4天3组患儿血清IL-6、IL-10及IL-6/IL-10的差异均没有统计学意义(P＞0.05).结论 血清IL-10水平可能有助于评估儿童肺炎相关脓毒症的严重程度,IL-6/IL-10升高提示预后不良.     

新生儿缺氧缺血性脑病血清IL-8水平变化研究

目的　白细胞介素 8(IL 8)为缺血 /再灌注时炎症细胞的释放产物 ,并可引起细胞损伤。该研究旨在探讨IL 8是否参与新生儿缺氧缺血性脑病 (HIE)脑缺血 /再灌注损伤。方法　采用双抗体夹心ELISA法检测5 0例HIE患儿 (HIE组 ,其中轻度HIE 1 8例 ,中度HIE 1 7例 ,重度HIE 1 5例 ;合并感染者 2 9例 ,未合并感染者 2 1例 )、30例正常新生儿 (正常对照组 )及 2 0例患感染性疾病无HIE患儿 (感染组 )血清IL 8水平 ,HIE患儿经治疗后复查血清IL 8。结果　HIE组血清IL 8水平高于对照组 (2 1 .5 2± 9.5 9pg/mlvs 1 4 .4 3± 4 .84 pg/ml) ,差异有显著性 (P <0 .0 1 ) ;重度HIE患儿血清IL 8水平高于轻度HIE组 (2 6 .0 7± 1 3.83pg/mlvs 1 7.5 6± 6 .5 2pg/ml) ,差异有显著性 (P <0 .0 5 ) ,与中度HIE组比较 (2 1 .71± 5 .6 5 pg/ml) ,差异无统计学意义 (P >0 .0 5 ) ;HIE患儿治疗后IL 8水平较治疗前下降 (1 4 .5 3± 4 .87pg/mlvs 2 2 .6 0± 7.0 6 pg/ml) ,差异有显著性 (P <0 .0 1 ) ;有感染合并症HIE患儿血清IL 8水平高于无感染合并症患儿及感染组患儿依次为 2 3.79± 1 1 .0 4pg/ml,1 8.38± 6 .0 7pg/ml,1 8.2 2± 8.0 1 pg/ml,差异有显著性 (P <0 .0 5 )。结论　新生儿HIE时血清IL 8升高 ,病情越重升高越显著     

脓毒症儿童白细胞介素18基因启动子多态性研究

目的 研究白细胞介素(IL-18)基因启动子多态性位点以及相应血清IL-18含量与儿童脓毒症(Sepsis)的关系.方法 双抗体夹心酶联免疫吸附实验(ELISA)法、聚合酶链反应-序列特异性引物(PCR-SSP)和测序的方法 .两组间比较采用t检验,多组间比较采用方差分析,计数资料比较采用χ~2检验.结果 ①脓毒症患儿血清IL-18水平为(196.56±157.32)pg/ml,明显高于健康儿童的(66.16±41.63)PS/ml(P<0.01),随着脓毒症患儿病情的加重,血清IL-18浓度呈上升趋势,非危重组[(152.87±114.96)pg/ml]明显高于对照组[(66.16±41.63)pg/ml],危重组[(191.98±169.72)pg/ml]高于非危重组,极危重组血清IL-18浓度[(323.89±159.35)pg/ml]显著增高,差异有非常显著性(P=0.000),各组间比较差异均有显著性(P<0.01),相关分析发现血IL-18水平与小儿危重病例评分呈负相关(P<0.01).②健康儿童与脓毒症患儿均存在IL-18基因启动子多态性.健康儿童和脓毒症患儿-137G/C基因型频率分别为GG型(61.8%)、GC型(35.8%)、CC型(2.4%)和GG型(71.1%)、GC型(26.7%)、CC型(2.2%);等位基因的频率分别为G型(79.7%)和G型(84.4%).健康儿童和脓毒症患儿-60TC/A基因型频率分别为CA型(61.0%)、CC型(26.8%)、AA型(12.2%)和CA型(76.7%)、CC型(21.1%)、AA型(2.2%);等位基因的频率分别为C型(57.3%)和C型(59.4%).③脓毒症患儿-607CA基因型分布频率(76.7%)显著高于健康儿童(61.0%),AA基因型分布频率(2.2%)显著低于健康儿童(12.2%),差异均有显著性(P<0.05).④依-137CC、-137GC、-137GG顺序,健康儿童血清IL-18水平分别为:(45.67±28.36)pg/ml、(53.27±37.91)pg/ml、(76.91±42.44)pg/ml;而脓毒症患儿分别为:(140.50±60.10)pg/ml、(184.42±157.33)pg/ml、(237.02±161.76)pg/ml.依-607AA、-607CA、-607CC顺序,健康儿童血清IL-18水平分别为:(48.80±32.11)pg/ml、(68.41±42.53)ps/ml、(70.17±43.87)pg/ml;而脓毒症患儿分别为:(141.50±64.35)pg/ml、(151.21±121.19)pg/ml、(211.16±163.64)pg/ml.但差异无统计学意义(P>0.05).结论 脓毒症患儿血清IL-18水平明显升高,且与病情的加重有关.IL-18基因启动子-607CA基因型携带者儿童更易罹患脓毒症,表明-607CA基因型可能为脓毒症易感基因型,而-607AA基因型可能对儿童患脓毒症具有对抗作用.     

支气管肺炎患儿血清IL—8水平变化的临床意义

本文采用ELISA法检测48例支气管肺炎患儿及40例对照组小儿血清白细胞介素-8(IL-8)水平,以探讨肺炎患儿血清IL-S水平变化的临床意义。48例肺炎组中重症肺炎15例,非重症肺炎33例。结果:肺炎组血清IL-8水平(0.660±0.370μg/ml)较对照组(0.128±0.078μg/ml)高,差异有显著性(P<0.01)。重症肺炎组血清IL-8水平(0.875±0.398μg/ml)较非重症肺炎组(0.562±0.320μg/ml)高,差异亦有显著性(P<0.01)。提示:血清IL-8水平可望成为支气管肺炎病情及预后的估计指标之一。     

生命早期补充维生素D对哮喘大鼠白细胞介素10和细胞间黏附分子1表达的影响

目的 研究生命早期补充维生素D对大鼠哮喘模型的影响与机制.方法选用性成熟的雌性Wistar大鼠32只.随机分为4组:对照组、低、中、高剂量组各8只.于受孕第7天起隔天以灌胃的方式给予各组大鼠不同剂量的1,25(OH)_2D_3,对照组以DMSO-PBS代替.子代大鼠离乳后,从每组中随机取出8只制备哮喘模型.HE染色肺组织切片;ELISA法检测血清及肺泡灌洗液(BALF)中IL-10浓度;免疫组化法检测细胞间黏附分子I(ICAM-1)在肺组织中的表达.结果 (1)肺组织病理变化:低剂量组和中剂量组气道炎症和嗜酸性细胞浸润均低于对照组,高剂量组则明显高于对照组.(2)血清及BALF中IL-10浓度:血清中,低剂量组[(30.2±2.8)pg/ml]和中剂量组[(51.5±6.6)pg/ml]IL-10浓度均高于对照组[(18.7±4.7)pg/ml](P<0.05),且中剂量组高于低剂量组(P<0.05),而高剂量组[(15.4±3.5)pg/ml]无明显变化(P>0.05);BALF中,与对照组[(59.1±14.4)pg/ml]相比,低剂量组[(58.1±3.4)pg/ml]无显著性变化(P>0.05),中剂量组[(90.0±14.3)pg/ml]IL-10浓度高于对照组(P<0.05),高剂量组[(45.3±6.5)pg/ml]低于对照组(P<0.05).(3)ICAM-1在支气管上皮细胞中的表达:低剂量组与对照组比较差异无统计学意义(P>0.05);中剂量组低于对照组(P<0.05);高剂量组高于对照组(P<0.05).结论 生命早期适量的1,25(OH)_2D_3干预可改善大鼠肺部炎症,减少嗜酸性细胞浸润,而过量则加重气道炎症.其机制可能与1,25(OH)_2D_3对IL-10及支气管上皮ICAM-1表达的影响有关.     

Inflammatory mediators in umbilical plasma from neonates who develop early-onset sepsis

OBJECTIVES: To study whether early-onset neonatal sepsis is associated with a prenatal immune response with elevated umbilical plasma levels of inflammatory mediators, and to study whether mediator levels may be helpful in identifying infected neonates. SETTING: Nested case-control study. METHODS: Cord blood was sampled from 7,073 consecutively delivered neonates. After review of the medical records, neonates suspected to suffer from infection were classified as infected (n = 52) or noninfected but sick controls (n = 33). We also included a group of healthy controls (n = 99). Umbilical plasma levels of tumour necrosis factor-alpha (TNFalpha), interleukin (IL)-1beta, IL-6, IL-8, soluble TNF receptors (p55 and p75), IL-1 receptor antagonist (IL-1RA) and C-reactive protein were measured by immunoassays. RESULTS: Infected neonates had higher levels of TNFalpha, IL-1beta, IL-6, IL-8, p55, p75 and IL-1RA than healthy controls (all p < 0.01). Among preterm infants (GA <37 weeks), those with infection (n = 11) had higher levels of IL-1beta, IL-6, IL-8, p55 and p75 than noninfected sick controls (n = 13) (all p < 0.05), but among term infants, the infected did not differ from the noninfected sick controls. Receiver operator characteristic plots showed that IL-1beta, IL-6 and IL-8 identified preterm infected neonates accurately. CONCLUSIONS: Early-onset neonatal sepsis is associated with a prenatal immune response with increased TNFalpha, IL-1beta, IL-6, IL-8, p55, p75 and IL-1RA levels in umbilical plasma. Among neonates who present symptoms suggestive of infection, cytokine levels may be helpful in identifying preterm, but not term infected individuals.     

支气管哮喘模型大鼠IL-4 IL-10 IFN-γ的检测

目的　哮喘的发病机理尚不完全清楚 ,近年来 ,细胞因子在哮喘中的作用引起人们的关注。本文旨在探讨支气管哮喘的免疫学发病机理 ,研究细胞因子IL 4、IL 10、IFN γ与哮喘的关系。方法　建立大鼠支气管哮喘模型。将Wistar大鼠随机分为两组 :正常对照组 (n =11)及哮喘组 (n =11) ,以卵白蛋白 (OVA)腹腔注射致敏大鼠 ,两周后雾化吸入OVA发敏 ;发敏后杀鼠 ,取脾 ,制备单个核细胞悬液 ,体外培养 ,并以OVA刺激 ,取不同时间培养上清 ,应用ELISA双抗体夹心法测定其中IL 4、IL 10和IFN γ的水平。结果　支气管哮喘组动物单个核细胞培养上清中IL 4的水平明显高于正常对照组 (6 4 .5 6± 5 .83vs 2 4 .6 6± 3.6 8pg/ml,P <0 .0 5 ) ,IL 10水平明显低于正常对照组 (34.13± 0 .85vs 85 .12± 6 .13,P <0 .0 5 ) ,IFN γ水平明显低于正常对照组 (3.87± 0 .4 8vs14 .5 1± 1.32 pg/ml,P <0 .0 5 )。结论　细胞因子IL 4、IL 10和IFN γ可能参与了哮喘发病的病理生理过程。     

Plasma levels of interleukin-6 and interleukin-10 in preterm neonates evaluated for sepsis

In a prospective study, plasma interleukin-6 (IL-6) and interleukin-10 (IL-10) levels were measured by enzyme-linked immunosorbent assay in 45 premature neonates (25–34 weeks gestational age) with signs and symptoms of suspected sepsis at 0, 12 and 24 h; C-reactive protein (CRP) was measured at 0–24 h after enrolment. Six subjects were excluded due to insufficient blood sampling. The remaining 39 neonates were assigned to one of three groups: 25 newborns with sepsis (blood culture positive), seven with pneumonia (positive results on broncho-alveolar lavage fluid culture and characteristic chest radiography) and seven with necrotising enterocolitis (NEC) (characteristic intestinal and radiological signs according to the criteria of Bell et al.). A group of 20 healthy preterm neonates represented control subjects. On admission, higher levels of IL-6, IL-10 and CRP were observed in neonates with sepsis: IL-6 (median 1500 pg/ml, range 487–10000 pg/ml), IL-10 (median 113 pg/ml, range 70–196 pg/ml), CRP (median 22 mg/l, range 4–80 mg/l); pneumonia: IL-6 (median 1500 pg/ml, range 747–8000 pg/ml, IL-10 (median 84 pg/ml, range 76–92 pg/ml), CRP (median 10 mg/l, range 8–33 mg/l) and NEC: IL-6 (median 6650 pg/ml, range 1595–7950 pg/ml), IL-10 (median 80 pg/ml, range 61–147 pg/ml), CRP (median 3 mg/l, range 2.8–8 mg/l) as compared to controls (IL-6 median 208 pg/ml, range 198–349 pg/ml; IL-10 median 36 pg/ml, range 19–50 pg/ml; CRP median <2 mg/l) (P < 0.05). In neonates with sepsis, IL-6 levels were significantly correlated with IL-10 levels (r=0.65; P=0.04) at the time of the second sample. The highest IL-6 levels were observed at onset, while IL-10 was predominant 12 h later. On admission, IL-10 and CRP levels were significantly higher in non-survivors (IL-10 median 507 pg/ml, range 422–753 pg/ml; CRP median 123 mg/l, range 20–219 mg/l) than in survivors (IL-10 median 76 pg/ml, range 61–143 pg/ml; CRP median 8 mg/l range 3–46 mg/l), while IL-10 levels were significantly higher (P < 0.05) also 12 h after admission (non-survivors: IL-10 median 600 pg/ml, range 538–800 pg/ml; survivors: IL-10 median 74 pg/ml, range 53–161 pg/ml). IL-6 and IL-10 levels were significantly correlated with CRP levels on admission (r=0.45; P=0.05). Conclusion Preterm neonates with sepsis, pneumonia or necrotising enterocolitis showed increased interleukin-6, interleukin-10 and C-reactive protein levels. High interleukin-10 concentration was associated with mortality and could be an early indicator of prognosis. Received: 21 November 2000 / Accepted: 23 January 2001     

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目的观察川崎病(KD)患儿血清降钙素原(PCT)、白介素-6(IL-6)水平的变化,探讨其与KD并发症间的关系。方法研究对象为2003-10—2005-12在首都儿科研究所附属儿童医院住院的88例KD患儿,测定其血清PCT、IL-6水平;正常对照为同期33例健康儿童,进行同样检测。结果(1)71例急性期患儿PCT水平与14例亚急性期患儿、33例正常对照儿童PCT水平相比,其差异均有统计学意义(P<0.05和<0.01)。(2)急性期24例其他系统并发症患儿PCT水平显著高于47例无其他系统并发症患儿,且差异有统计学意义(P<0.01);当PCT≤0.5ng/mL时,其他系统并发症发生率16.3%;当PCT>0.5时,其他系统并发症发生率41.0%,两者差异有统计学意义(P<0.05)。(3)56例急性期患儿IL-6水平与11例亚急性期患儿、14例正常对照儿童IL-6水平相比,其差异均有统计学意义(P值均<0.01)。(4)急性期17例其他系统并发症患儿IL-6水平显著高于39例无其他系统并发症患儿IL-6水平,二者差异有统计学意义(P<0.01)。结论(1)KD患儿急性期血清PCT、IL-6水平增高,亚急性期下降,PCT增高维持时间较IL-6稍长。(2)血清PCT、IL-6水平在发生其他系统并发症患儿中是显著升高的,对其检测有助于KD的病情评价。     

Serum interleukin-1β in neonatal sepsis

Serum levels of interleukin-1β (IL-1β) in newborn infants with septicaemia were measured and possible relationships between the clinical course of the infants, causative micro-organisms and IL-1β levels were investigated in a prospective study. The study groups comprised 49 newborn infants (25 mature, 24 premature) with proven sepsis and 40 healthy newborn infants (20 mature, 20 premature). Serum IL-1β levels were measured using the IL-1β immunoradiometric assay. The levels were found to be lower in neonates with sepsis (median 0.1 pg/ml) than in healthy controls (median 27.9 pg/ml) ( p <0.001). Non-significant trends towards lower levels were observed in children with shock and in non-survivors. No correlation was found between IL-1β and postnatal age, gestational age or the study weight of the patients. There was no significant difference in the serum IL-1β level in septic patients infected with Gram-positive bacteria and those infected with Gram-negative bacteria. The results show that the concentration of IL-1β is significantly decreased in preterm and term neonates with sepsis.     

肺动脉灌注低温Perfadex液在法乐四联症根治术中对肺功能的保护作用

目的 探讨体外循环中肺动脉灌注低温Perfadex液对婴幼儿法乐四联症的肺功能保护作用.方法 将24例法乐四联症患儿分为对照组(12例)和肺动脉灌注组(12例),均在体外循环下行法乐四联症根治手术.肺动脉灌注组体外循环期间于心脏阻断后向肺动脉灌注低温Perfadex液,对照组不灌注.分别于转流前,转流结束,手术结束,术后6h及术后24 h测定两组白介素6(IL-6),白介素8(IL-8),白介素10(IL-10)以及血浆脂质过氧化物丙二醛(MDA)水平;计算氧合指数( PaO2 /FiO2)和肺静态顺应性(TV/Ppause).结果两组体外循环后IL-6,IL-8,IL-10及MDA水平均升高[转流结束灌注组IL-6(367.1±32.6)pg/ml,IL-8(376.6±40.4)pg/ml,IL-10(265.4±42.1)pg/ml;对照组IL-6(392.7±41.5)pg/ml,IL-8(477.2±39.7)pg/ml,IL-10(197.8±42.6)pg/ml],手术结束时达峰值[灌注组IL-6 (369.6±37.8) pg/ml,IL-8(536.7±31.7)pg/ml,IL-10(511.5±44.0)pg/ml;对照组IL-6(480.3±46.3) pg/ml,IL-8(585.5±47.8)pg/ml,IL-10(390.8±34.3)pg/ml],以后逐渐下降,术后24 h仍高于术前;肺动脉灌注组在转流结束,手术结束及术后6h的IL-6,IL-8及MDA上升幅度低于对照组[术后6h灌注组IL-6(266.5±31.1)pg/ml,IL-8 (373±32.4)pg/ml,MDA(12.2±4.6)nmol/ml;对照组IL-6(311.8±42.2)pg/ml,IL-8 (477.6±47.7)pg/ml,MDA(19.2 ±5.5) nmol/ml,P＜0.01],各时点IL-10上升幅度高于对照组(P＜0.01);肺动脉灌注组手术结束、术后6h及24 h氧合指数[(367.2±32.0)mmHg,(359.1±39.8)mmHg,(401.1±54.8)mmHg]高于对照组[(316.6±48.5)mmHg,(289.5±42.8)mmHg,(346.6±68.0)mmHg,P＜0.05或0.01];两组肺静态顺应性[手术结束灌注组(3.53±0.57) ml/cmH2O,对照组(3.02±0.63) ml/cmH2O]较术前灌注组[(5.21±0.61 )ml/cmH2O,对照组(4.96±0.82)ml/cmH2 O]明显降低,肺动脉灌注组变化程度[手术结束(3.53±0.57) ml/cmH2O,术后6 h(3.11±0.8)ml/cmH2O,术后24 h (3.95±0.61) ml/cmH2 O]明显低于对照组[手术结束(3.02±0.63) ml/cmH2O,术后6 h(2.71±0.56) ml/cmH2O,术后24 h(3.26±0.54)ml/crnH2O,P＜0.05].结论肺动脉灌注低温Pefadex液能明显减轻婴幼儿法乐四联症术后肺损伤.