儿童肾脏病患者血清白介素-2、白介素-6和胰岛素样生长因子-Ⅱ检测及其临床意义

为观察儿童肾脏病患者血清白介素 - 2 (IL - 2 )、白介素 - 6 (IL - 6 )、胰岛素样生长因子 -Ⅱ (IGF -Ⅱ )的含量 ,探讨细胞因子与肾脏病的关系 ,采用RIA法检测了不同肾脏病儿童患者血清IL - 2、IL - 6、IGF -Ⅱ的水平。结果显示 ,正常儿童血清IL - 2含量为 1 .6 0± 0 .32 μg/L、IL - 6为 37.0± 6 .0ng/L、IGF -Ⅱ为 0 .30±0 .1 5μg/L。正常男女性儿童之间血清三个细胞因子含量无显著性差异 (P >0 .0 5 )。正常儿童与成年人之间三个细胞因子有显著性差异 (P <0 .0 1 )。慢性肾小球肾炎血清IL - 2含量为 1 .96± 0 .4 4 μg/L、IL - 6为 5 4 .9± 2 0 .9ng/L、IGF -Ⅱ为 0 .5 2± 0 .1 5 μg/L ;急性肾炎血清IL - 2含量为 1 .92± 0 .4 7μg/L、IL - 6为 76 .3± 36 .2ng/L、IGF -Ⅱ为 0 .6 2± 0 .2 2 μg/L ;紫癜性肾炎血清IL - 2含量为 1 .91± 0 .33μg/L、IL - 6为 5 5 .5± 1 5 .1ng/L、IGF -Ⅱ为 0 .5 0± 0 .1 9μg/L ;肾病血清IL - 2含量为 1 .96± 0 .6 5 μg/L、IL - 6为 5 6 .2± 2 8.4ng/L、IGF -Ⅱ为 0 .5 9±0 .2 8μg/L ;不同肾脏病儿童三个细胞因子与正常人相比有显著差异 (P <0 .0 1 )。提示 :不同肾脏病儿童血清IL- 2、IL - 6、IGF -Ⅱ含量升高表明 ,这三个细胞因子均积极参与     

女性甲状腺功能异常患者血清瘦素含量变化观察

目的 :探讨女性甲状腺功能异常患者血清瘦素 (Leptin)水平的变化。方法 :采用放射免疫分析法 (RIA)分别检测 6 0例甲状腺功能亢进、36例原发性甲状腺功能减退和 30例健康人血清Leptin水平 ,并随访经过治疗后甲状腺功能恢复至正常水平患者 (2 4例甲亢、12例甲减 )血清Leptin水平。结果 :各组Leptin水平皆与BMI呈强正相关 (p <0 0 1)。Leptin水平 (甲减组 4 2 1± 1 87μg/L)明显低于健康组 (8 18± 3 31μg/L) ,有统计学意义 (p <0 0 1) ;甲亢组 8 6 1± 3 0 4 μg/L与健康组比较无显著性差异 (p >0 0 5 )。治疗后甲减缓解组Leptin水平 (6 77± 2 35 μg/L)明显高于初诊未治疗组 (4 19± 1 84 μg/L) (p <0 0 5 ) ,接近正常人水平 ;甲亢组治疗前后Leptin水平无明显差异 (p >0 0 5 )。结论 :生理剂量的甲状腺激素可使人体产生足够的Leptin ,维持人体的正常能量代谢。甲状腺功能异常因甲状腺激素的变化而影响了Leptin的正常调节。     

癫痫患儿血清神经元特异性烯醇化酶水平变化及临床意义

目的　研究癫痫患儿癫痫发作后血清神经元特异性烯醇化酶 (NSE)的变化。方法　采用放射免疫分析法对11例癫痫患儿发作后 4 8h内血清中NSE进行测定 ,并与 2 2例正常组进行对照。结果　 2 2例正常对照组血清中NSE进行测定值为 (6 .4 6± 3.35 ) μg/L ,癫痫发作组血清中NSE为 (17.4 5± 10 .1) μg/L ,两组比较有显著性差异 (P≤ 0 .0 1)。结论　癫痫发作组NSE水平明显高于正常对照组 ,提示癫痫发作后有一定程度的脑神经元损害。     

健康人与代谢性骨病患者血清骨钙素水平及其意义

目的 :研究正常与病理状态下血清骨钙素 (S -BGP)变化及其临床意义。方法 :采用放射免疫分析法观察了 2 70例不同年龄段 (每隔 1 0岁为一年龄段 )健康人 ,60例脑血管疾病以及 85例代谢性骨病患者的S -BGP水平。结果 :(1 ) 89例新生儿脐血S -BGP浓度为 1 9 3± 1 6 8μg/L ,2 2例出生 3天婴儿S -BGP浓度为 7 4± 2 3μg/L ,1 0 0例正常人 (1 1～ 60岁 ,平均年龄 39岁 )S -BGP浓度为 5 2± 1 35μg/L ,其中 :男性 5 3±1 4μg/L(n =47) ,女性 5 1± 1 34μg/L(n=53)。 30例老年健康人S -BGP浓度为 3 9± 1 48μg/L。S -BGP与年龄呈明显负相关 (r=- 0 383 ,P <0 0 0 1 )。 (2 ) 85例代谢性骨病患者S -BGP浓度 :甲亢患者 2 1 7± 2 0 46μg/L ,与正常组比较差异非常显著 (P <0 0 1 ) ;老年糖尿病 (NIDDM)患者 2 6± 0 99μg/L ,与正常老年健康组比较差异非常显著 (P <0 0 1 )。 (3) 60例老年脑血管疾病患者S -BGP水平 :脑梗塞 2 2± 1 1 μg/L ,脑出血 2 5± 1 2 μg/L ,与正常老年健康组比较差异非常显著 (P <0 0 1 )。结论 :本文结果表明 ,S -BGP的放射免疫分析是研究正常与病理状态下骨代谢变化的重要检测手段     

血清NSE,TNF-α,LSA联检对肺癌诊断的意义

目的 :探讨神经元特异性烯醇化酶 (NSE)、肿瘤坏死因子 -α(TNF -α)及脂质唾液酸 (LSA)在肺癌中的表达及其诊断价值。方法 :收集肺癌病人血清 78份 ,良性肺病患者血清 32份 ,正常对照血清 10 9份。采用酶联免疫吸附试验 (ELISA)和化学发光免疫分析法分别测定血清中的NSE、TNF -α及LSA。结果 :肺癌患者血清中的NSE、TNF -α、LSA分别为 19 78± 12 10ng/ml、135 6 4± 4 9 0 1pg/ml、1 0 6± 0 31mg/ml,明显高于良性肺病组 7 5 6± 3 4 1ng/ml、84 70± 2 4 89pg/ml、0 78± 0 18mg/ml及正常对照组 8 0 1± 2 81ng/ml、71 2 5± 13 5 0pg/ml、0 70± 0 13mg/ml(p <0 0 1)。对肺癌诊断的阳性率分别为 6 2 82 %、84 6 2 %、75 6 4 。联合检测阳性率达92 31%。结论 :血清NSE、TNF -α、LSA在肺癌病人中有较高的阳性率 ,联检阳性率更高 ,故NSE、TNF -α、LSA的联检是肺癌的非常有用的辅助诊断指标。 阳性标准为NSE >16 0ng/ml,TNF -α >10 0pg/ml,LSA >0 5 8mg/ml。     

糖尿病视网膜病变患者瘦素水平的变化

目的 :探讨糖尿病视网膜病变患者血清瘦素水平变化规律。方法 :受试对象 12 0例 ,分为对照组 30例 (男 18,女 12 )、糖尿病无视网膜病变组 30例 (男 18,女 12 ) ,非增殖性视网膜病变组 30例 (男 18,女 12 )及增殖性视网膜病变组 30例 (男 18,女 12 ) ,检测血清瘦素、胰岛素、Ⅳ型胶原及血糖浓度 ,分析瘦素水平与其它指标的相关性。结果 :对照组、无视网膜病变组、NPDR组及PDR组血清瘦素浓度分别为 6 91± 1 87μg/L ,7 83± 2 11μg/L ,9 5 6± 2 4 3μg/L和 11 6 9± 2 5 7μg/L ,经协方差分析排除体重指数的影响 ,PDR组血清瘦素浓度高于NPDR组 (t=2 15 ,p<0 0 5 )、无视网膜病变组 (t=2 71,p <0 0 1)及对照组 (t =3 5 0 ,p <0 0 0 1) ;NPDR组高于无视网膜病变组 (t=2 2 3,p <0 0 5 )及对照组 (t=2 75 ,p<0 0 1)。血清瘦素浓度与体重指数、胰岛素呈正相关 (r=0 2 2 ,p <0 0 5 ;r=0 2 8,p<0 0 1)。结论 :糖尿病视网膜病变患者血清瘦素浓度升高 ,且增高的幅度与病情的严重程度正相关     

胰岛素样生长因子-1及内皮素-1水平与胎儿宫内发育受限发病的关系

目的 探讨胰岛素样生长因子-1(IGF-1)及内皮素-1 (ET-1)与胎儿宫内发育受限(FGR)发病的关系.方法 应用放射免疫分析法和酶联免疫吸附试验,分别测定21例FGR患儿脐血、孕妇(FGR组)血清及羊水中IGF-1和ET-1水平,同期住院的正常晚期妊娠妇女34例(正常妊娠组)作为对照.结果 (1)FGR组孕妇血清IGF-1为112.16±7.02μg/L,低于正常妊娠组的207.07±8.25μg/L,两者比较,差异有显著性(P＜0.01);FGR组脐血清IGF-1为16.27±7.38μg/L,低于正常妊娠组的44.89±6.44μg/L,两者比较, 差异有极显著性(P＜0.001);FGR组羊水中IGF-1 与正常妊娠组无明显差异(P＞0.05);(2)FGR组脐血清ET-1为79.34±3.67μg/L,高于正常妊娠组的43.96±4.16μg/L,两者比较,差异有显著性(P＜0.01);FGR组羊水中ET-1水平(21.96±1.89μg/L)明显高于正常妊娠组(10.41±2.13μg/L),两组相比有显著差异(P＜0.01);而FGR组孕妇血清ET-1与正常妊娠组相比无明显差异(P＞0.05).结论 IGF-1及ET-1在FGR的发病中可能起到重要作用有关.     

血清甘露聚糖凝集素水平及与反复呼吸道感染关系的初步研究

目的　建立儿童血清甘露聚糖凝集素 (MBL)水平正常值参考范围 ,了解血清MBL低水平与反复呼吸道感染的关系。方法　用ELISA方法检测重庆地区 91例新生婴儿脐血MBL水平 ,2 6 3例学龄前儿童、1 6例成人血清MBL水平 ,并对学龄前各年龄组血清低MBL水平的儿童进行反复呼吸道感染的病史回顾。结果　新生儿脐血MBL水平为 ( 1 .71± 1 .6 0 ) μg/ml,成人外周血 ( 2 .2 6± 1 .56 ) μg/ml,两组比较差异无统计学意义 (P >0 .0 5) ,学龄前各年龄组MBL水平分别为 ( 3.1 6±2 .0 0 ) μg/ml、( 3.1 9± 1 .88) μg/ml、( 3.30± 2 .0 5) μg/ml、( 3.6 9± 2 .2 2 ) μg/ml、( 2 .80± 1 .38) μg/ml,与新生儿比较明显增高 (P <0 .0 0 5) ,但学龄前期各组间比较差异无统计学意义 (P >0 .0 5) ;1 6例血清低MBL水平儿童中 7例在 3岁前出现反复呼吸道感染 ( 4 3.7% ) ,主要感染方式为上呼吸道感染 ,血清MBL水平低于 1 0 0ng/ml组与血清MBL水平在 1 0 0～ 2 0 0ng/ml的儿童比较反复呼吸道感染频率有增多趋势。结论　新生儿期MBL水平可达成人水平 ,但明显低于学龄前各年龄组儿童 ,学龄前儿童组间比较没有显著差异 ;低血清MBL水平儿童在免疫脆弱阶段存在反复呼吸道感染的易患倾向 ,血清MBL水平下降时 ,呼吸道感染频率有增     

人血清中甘露聚糖结合凝集素的检测及意义

建立检测甘露聚糖结合凝集素 (MBL )的酶联免疫法 ,检测 2 2 6例不同性别、年龄正常人和 115例病人血清中的MBL水平。结果发现儿童组显著低于成人组。术后、烧 (烫 )伤和支原体肺炎患者的血清MBL水平 ( x±s)分别为 (6 73± 3 2 9)mg/L、 (5 86± 3 37)mg/L和 (5 18± 3 4 3)mg/L ,较正常对照组 (2 6 5± 1 5 6 )mg/L显著增高 ,而慢性肾脏病患者的血清MBL水平 (1 0 4± 0 4 8)mg/L显著降低。结果提示血清MBL水平可作为监测个体天然免疫功能的一项指标     

人生长激素的生物素—新和素放大酶联免疫法的建立

为建立有生物素和亲和素放大系统的人血清生长激素 (hGH)酶联免疫分析法 (BA ELISA) ,以微量的GH抗原免疫BALB/C小鼠 ,利用杂交瘤技术制备出 2 9株分泌抗hGH单克隆抗体 (MCA)的杂交瘤株。选择最佳配对MCA ,利用亲和素与生物素高亲和力的特性 ,建立了血清hGH双位点的BA ELISA法。我们的MCA滴度为 (0 5～ 5 0 0 )× 10 4,亲和常数Ka =(0 13～ 1 40 )× 10 10 L/mol。血清hGH的ELISA的灵敏度为 0 0 4± 0 0 1μg/L ;在血清中分别加入 1,2 5 ,5 μg/L的hGH ,其回收率为 90 7%～ 10 7 6 % (平均为 10 1 2 0 %± 0 0 3 % ) ;hGH含量为 2 8、10 0、2 9 8μg/L的血清批内、批间变异系数分别为 4 9%、3 8%、7 9%和 6 2 %、3 5 %、9 5 % ;用本法测定了正常儿童、生长激素缺乏症 (GHD)患儿和活动性肢端肥大症患者空腹血清hGH水平 ,分别为 1 87± 3 0、0 30± 0 42和 8 71± 6 95 μg/L。上述结果表明 ,本ELISA方法灵敏、特异、稳定、准确 ,能确切反映hGH分泌功能 ,在诸多方面均优于RIA。     

Soluble Intercellular Adhesion Molecule-1 Serum Profile in Physiologic and Preeclamptic Pregnancy

PROBLEM: The aim of this study was to determine serum levels of soluble intercellular adhesion molecule (sICAM)-1, an adhesion receptor that mediates interactions with the immune system, in physiologic and preeclamptic pregnancies. Moreover, we evaluated whether the release of sICAM-1 during pregnancy correlated to plasma fibronectin concentrations. METHOD OF STUDY: Serum was collected from 18 nonpregnant, control women, from 58 normal pregnant women during the first (n = 13), second (n = 15), and third (n = 30) trimesters, and from 25 preeclamptic patients at 27–39 weeks' gestation. All samples were assayed for sICAM-1 by a specific enzyme-linked immunoassay and for fibronectin by a nephelometric system. Serum sICAM-1 levels in preeclamptic patients were compared to those obtained from gestational-matched normal pregnant women. RESULTS: Levels of sICAM-1 were significantly elevated (P < 0.001) in each of the three trimesters of normal pregnancy (I trimester: 390.4 ± 25.7 ng/ml; II trimester: 386.3 ± 15.4 ng/ml; and III trimester: 367.3 ± 15.8 ng/ml) when compared to those of healthy nonpregnant women (263.3 ± 11.6 ng/ml). No significant difference in sICAM-1 concentrations was observed among the three trimesters. Preeclampsia was associated to a significant decrease (P < 0.01) of sICAM-1 levels (309.8 ± 11.6 ng/ml) relative to those observed in gestational-matched pregnant women (367.3 ± 15.8 ng/ml). Fibronectin and sICAM-1 levels did not correlate. CONCLUSION: The increased levels of sICAM-1 found in physiologic pregnancies and its reduction in preeclampsia may account for some of the immunologic alterations demonstrated to be associated with pregnancy.     

Drug concentrations in the serum and cerebrospinal fluid of patients treated with norvancomycin after craniotomy

Intracranial infection by gram-positive cocci is commonly found after craniotomy. Norvancomycin was independently developed in China, and had demonstrated therapeutic capability against gram-positive infection. This study investigated the serum and cerebrospinal fluid (CSF) concentrations in patients that received intravenous injection of norvancomycin after craniotomy. Patients with an indwelling catheter in the operational area/ventricle after craniotomy were administered norvancomycin by two approaches: (1) The conventional group consisted of 14 cases that were infused with 0.8 g norvancomycin for 1 h, every 12 h; (2) The continuous administration group consisted of 14 cases that were infused with 0.8 g norvancomycin for 1 h, and then another 0.4 g for 11 h with extended infusion, followed by continuous infusion of 0.4 g norvancomycin for 12 h. Samples of serum and CSF were collected at different time-points to measure norvancomycin levels after administration. In the conventional and continuous administration groups, the peak serum concentrations of norvancomycin were 55.52?±?26.04 and 59.22?±?41.88 mg/L, respectively, while those at 24 h were 8.21?±?6.04 and 8.01?±?4.17 mg/L, respectively. Meanwhile, peak CSF concentrations were 16.31?±?11.15 and 8.82?±?8.91 mg/L, respectively, while those at 24 h were 6.12?±?2.34 and 6.24?±?4.38 mg/L, respectively. This preliminary study showed that for the early administration of standard doses of norvancomycin post-neurosurgery, the CSF concentration in both the conventional and continuous administration groups reached or exceeded the 90 % minimum inhibitory concentration (MIC₉₀, 2 mg/L) of target bacteria such as methicillin-resistant Staphylococcus aureus (MRSA).     

Serum concentrations of interferon-γ and intercellular adhesion molecule-1 eight years after an early respiratory syncytial virus infection

BACKGROUND: Respiratory syncytial virus (RSV) infection may influence the development of recurrent wheezing and atopy, but the mechanisms are unclear. OBJECTIVE: The purpose was to evaluate serum concentrations of soluble intercellular adhesion molecule-1 (sICAM-1), CD14, IgE, IL-5 and IFN-gamma in children 6-10 years after an RSV infection and their correlation with subsequent asthma and atopy. METHODS: Fifty-one subjects admitted to hospital for RSV infection during the first year of life and controls matched for birth date and sex underwent clinical examinations including lung function, skin prick and blood tests. RESULTS: The RSV subjects had significantly higher serum concentrations of IFN-gamma and sICAM-1 than the controls (for IFN-gamma 224.9 pg/mL (standard deviation (SD) 271.3) vs. 187.1 pg/mL (372.9), difference 37.8 pg/mL, 95% confidence interval (CI) -90.3 to 166.0, P = 0.05; for sICAM-1 170.2 ng/mL (SD 63) vs. 147.8 ng/mL (SD 57), difference 22.4 ng/mL, 95% CI -1.4 to 46.1, P = 0.04). The RSV subjects with asthma had significantly higher concentrations of IFN-gamma than the controls with asthma, and the RSV subjects with wheezing during the previous 12 months had significantly higher concentrations of both IFN-gamma and sICAM-1 than the controls with wheezing. CONCLUSIONS: Children hospitalized for RSV infection in infancy still differ in IFN-gamma and sICAM-1 production 6-10 years after the infection. The data suggest that the pathomechanism of asthma and wheezing after an early RSV infection may be different from that of children without an early RSV infection.     

Increase in IL-6, TNF-α, and MMP-9, but not sICAM-1, concentrations depends on exercise duration

It has been suggested that exercise intensity is of importance in the regulation of increase in pro-inflammatory molecules, but there is still a debate about the effect of duration on these molecules. Therefore, the effect of exercise duration on the serum concentrations of interleukin-6 (IL-6), tumour necrosis factor-α (TNF-α), soluble form of intercellular adhesion molecule-1 (sICAM-1), and matrix metalloproteinase-9 (MMP-9) was studied in 22 half-marathon (HM) and 18 marathon (M) male amateur runners who completed their exercise task in 1.8 ± 0.2 (mean ± standard deviation) and 3.6 ± 0.4 h, respectively (thus, average speed was 11.7 ± 1.5 and 11.9 ± 1.8 km h^?1, respectively). Blood was sampled 2 days before, 15 min after, and 28 h after the race. IL-6, TNF-α, and MMP-9 always increased immediately after exercise, but the increase was larger (P < 0.05) in M versus HM (?IL-6: 31 ± 24 vs. 5 ± 4 pg ml^?1; ?TNF-α: 1.7 ± 1.9 vs. 0.5 ± 0.8 pg ml^?1; MMP-9: 288 ± 216 vs. 145 ± 128 ng ml^?1, respectively). sICAM-1 also increased with exercise, but similarly in M and HM (20 ± 40 vs. 23 ± 32 ng ml^?1, respectively). Only sICAM-1 remained elevated 28 h post-exercise in both HM and M, while IL-6, TNF-α, and MMP-9 returned to pre-exercise levels. Competitive HM and M races induce significant increases in IL-6, TNF-α, sICAM-1, and MMP-9 concentrations. As HM and M runners performed the competition with similar absolute intensity, the difference in response between the groups suggests that exercise duration is of importance in the regulation of IL-6, TNF-α, and MMP-9, but not sICAM-1 concentrations in response to prolonged running.     

Increase in adhesion molecules in cerebrospinal fluid of children with mumps and mumps meningitis

Adhesion molecules play a key role in leucocyte migration into the central nervous system (CNS). Concentrations of endothelial-derived soluble intercellular adhesion molecule-1 (sICAM-1) and leucocyte-originated soluble L-selectin (sL-selectin) in cerebrospinal fluid (CSF) of children with mumps meningitis (mononuclear pleocytosis, n = 33) and mumps (absence of pleocytosis, n = 9) were compared with values from age-matched control group (n = 19). In 14 patients from the meningitis group, adhesion molecule levels together with albumin concentration were estimated in paired CSF/serum samples to calculate concentration quotients and determine molecule intrathecal release. Both sICAM-1 (median 3.44 versus 0.86 ng/ml; P < 0.0001) and sL-selectin (median 29.91 versus 8.52 ng/ml; P < 0.0001) concentrations in CSF were increased in mumps meningitis patients compared with controls. Increased levels of the selected adhesion molecules were also observed in mumps patients without CNS involvement when compared with controls (median sICAM-1: 1.14 versus 0.86 ng/ml, sL-selectin: 13.54 versus 8.52 ng/ml; P < 0.01). Additionally, the concentration of adhesion molecules was found to correlate with CSF leucocyte count. Considerable correlation of sICAM-1 and sL-selectin quotients and corresponding albumin quotients suggests that a majority of the soluble adhesion molecules originated from the bloodstream. Analysis of adhesion molecule levels demonstrated indirect evidence of brain-derived fractions. Our results suggest the involvement of adhesion molecules during the early phase of mumps meningitis.     

Immune response markers in sera of children infected with Giardia duodenalis AI and AII subassemblages

In this study, we evaluated serum markers of immune responses in children infected with G. duodenalis and compared them with the characterized parasite isolates. The reactivity indexes (RI) of IgG (1.503 ± 0.819) and IgA (2.308 ± 1.935) antibodies were significantly higher (P < 0.001) in infected children than in non-infected children. There were also statistically significantly higher serum levels (P < 0.05) of IFN-γ (393.10 ± 983.90 pg/mL) as well as serum (30.03 ± 10.92 μmol/L) and saliva nitric oxid derivatives (NO_x) (192.4 ± 151.2 μmol/L) in children infected with G. duodenalis compared to the group of non-parasitized children (127.4 ± 274.30 pg/mL; 25.82 ± 7.74 μmol/L and 122.5 ± 105.90 μmol/L, respectively). Regarding the characterized genetic variants of G. duodenalis and the immune response profiles, no differences were observed in terms of antibody reactivity or levels of serum cytokine and NO_x among children infected with AI or AII subassemblages. The elevated levels of IFN-γ and NO_x indicate that G. duodenalis intestinal infection in humans induces a cellular immune response detectable at the systemic level. Moreover, no significant differences in the antibody reactivity profile or the cytokine and NO_x production in the sera of children infected with AI or AII G. duodenalis variants were observed, suggesting that subtypes of the parasite do not influence the immune response profile.     

Elevated levels of soluble adhesion molecules in sera of patients with acute bronchiolitis.

The mechanisms of migration of neutrophils into the airway lumen are crucial in the development of airway injury of acute bronchiolitis and are mediated by adhesion molecules. In this study, we have attempted to evaluate the role of serum concentrations of the soluble form of intercellular adhesion molecule-1 (sICAM-1) in the disease activity in acute bronchiolitis and in respiratory syncytial virus (RSV) infection. Circulating levels of sICAM-1 in sera from 10 normal control subjects, and from 47 hospitalized acute bronchiolitis patients at admission, and from 25 patients on the day of discharge were determined by use of commercially available enzyme-linked immunosorbent assay kits. The mean serum level of sICAM-1 in bronchiolitis patients was significantly higher than in the 10 healthy control infants (345.8 +/- 99.7 microg/mL vs 237.1 +/- 81.7 microg/mL; p<0.05). However, the mean sICAM-1 concentration was similar between RSV-positive and RSV-negative patients (337.5 +/- 99.6 microg/mL vs 350.9 +/- 101.1 microg/mL; p=0.65). Although the mean clinical severity score of RSV-positive patients was significantly higher than that of RSV-negative patients (5.94 +/- 1.83 vs 3.48 +/- 1.70; p<0.05). The improvement of clinical severity score was not well correlated with the change of sICAM-1 level (r=0.22). This study provides evidence that serum levels of sICAM-1 are increased in acute bronchiolitis and further confirms the role of adhesion molecules involved in the pathogenesis of the disease. However, the serum concentrations of the soluble adhesion molecules could not reliably reflect the clinical severity of the disease.     

脑梗塞患者血清可溶性粘附分析水平的监测及意义

目的探讨粘附分子在脑梗塞不同时期含量变化作用机理以及临床意义。方法利用酶联免疫吸附法(ELISA)分别监测脑梗塞急性期、恢复期可溶性细胞间粘附分子-1(sICAM-1)、E-选择素(sE selectin)血清含量。结果脑梗塞急性期sICAM-1、sE-selectin含量明显升高,与恢复期及对照组比较有显著差异(P＜0 05),sICAM-1、、sE-selectin二者含量显著相关(P＜0.05)。结论粘附分子sICAM-1、、sE-selectin共同介导了白细胞的滚动浸润,参与了脑梗塞急性期的炎症损伤。     

正己烷接触工人的早期生物标志物含量变化

目的探讨正己烷接触工人的早期生物标志物。方法分别检测正己烷接触工人63名及对照组50名工人的尿2，5-己二酮、血清神经元特异烯醇化酶（NsE）及髓鞘碱性蛋白（nap）水平。结果接触组工人尿2，5-己二酮含量为0．31-10．38mg／gCr，对照组未检出；接触组血清NSE和MBP含量分别为（9．02±3．87）ug／L和（1．47±0．41．）ug／L，均显著高于对照组（P〈0．05）。结论正己烷接触可导致血清NSE及MBP水平的升高，尿2，5-己二酮、血清NSE和MBP水平可作为正己烷接触的早期生物标志物。     

脑梗塞患者血清可溶性粘附分子水平的监测及意义

目的 :探讨粘附分子在脑梗塞不同时期含量变化作用机理以及临床意义。方法 :利用酶联免疫吸附法 (ELISA)分别监测脑梗塞急性期、恢复期可溶性细胞间粘附分子 1(sICAM 1)、E 选择素 (sE se lectin)血清含量。结果 :脑梗塞急性期sICAM 1、sE selectin含量明显升高 ,与恢复期及对照组比较有显著差异 (P <0 .0 5 ) ,sICAM 1、、sE selectin二者含量显著相关 (P <0 .0 5 )。结论 :粘附分子sICAM 1、、sE selectin共同介导了白细胞的滚动浸润 ,参与了脑梗塞急性期的炎症损伤。