嗜酸细胞阳离子蛋白在过敏性紫癜中的检测意义

过敏性紫癜(HSP)是一种全身性毛细血管变态反应性疾病,发病机理尚未完全明了。病理活检提示小血管处有中性粒细胞及嗜酸性粒细胞浸润。嗜酸细胞阳离子蛋白(eosinophil cationic protein,ECP)是嗜酸细胞胞浆颗粒中的主要蛋白之一,是嗜酸细     

449例呼吸系统疾病患儿血清嗜酸细胞阳离子蛋白分析

为探讨血清ECP在哮喘诊断中的意义,我院于1996年2月～1998年4月对449例喘息性支气管炎,支气管哮喘发作期及缓解期患儿进行血清ECP测定。结果表明225例升高,占50．11％,其中喘支组升高为52．9％,均值为17．48＋26．42μg／L,哮喘发作组升高为57．7％,均值为32．14±21．17μg／L,均较对照组,哮喘缓解组为高。提示两者发病本质与发病机理相同,仅是程度不同而已,且ECP水平反映了患儿气道炎症的活动情况,可根据ECP变化来监测哮喘疗效和判断病情。     

小儿支气管哮喘诱导痰的嗜酸细胞阳离子蛋白测定

我们于1998年5月～12月应用痰诱导法对11例哮喘患儿的痰液进行嗜酸细胞阳离子蛋白(ECP)测定,并和自发痰ECP,血清ECP进行比较,现总结如下。 资料与方法 一、对象 (一)正常诱痰组:男女各5名;年龄7岁～14岁,平均10.7岁。排除过敏性疾病、寄生虫感染、自身免疫性疾病史,近2周内无呼吸道感染史的正常儿童。 (二)哮喘诱痰组:按《中华结核和呼吸杂志》1997年的     

不同病期哮喘患儿血清嗜酸细胞阳离子蛋白水平的观察及临床意义

近年来研究认为嗜酸细胞阳离子蛋白(ECP)与哮喘气道炎症密切相关。本文检测了不同病期哮喘患儿血清ECP水平,以探讨其临床意义,现报告如下。 资料与方法 一、临床资料 系1996年11月～1997年2月我院呼吸科专科门诊和住院患儿,诊断符合标准。分为:①哮喘发作组:32例,男17例,女15     

血清Clara 细胞分泌蛋白、总IgE与嗜酸性粒细胞阳离子蛋白在儿童哮喘检测中的临床意义

目的探讨血清Clara细胞分泌蛋白（CC16）、总IgE和嗜酸性粒细胞阳离子蛋白（ECP）检测在哮喘儿童中的意义。方法采用酶联免疫吸附法（ELISA）测定59例哮喘患儿急性发作期血清CC16水平,同时应用UniCAP100变态反应检测仪检测血清总IgE、ECP;另设30例健康儿童作为健康对照组。结果与健康对照组比较,哮喘组血清CC16水平显著降低、血清总IgE、ECP水平显著增高（t=2.93,2.72,4.52Pa〈0.01）;中重度哮喘发作患儿血清CC16水平显著低于轻度发作患儿（t=5.26P〈0.05）,中重度哮喘发作患儿血清总IgE显著高于轻度发作患儿（t=3.89P〈0.05）,血清ECP水平在哮喘轻度发作组与中重度发作组比较无统计学差异（t=1.57P〉0.05）;哮喘组血清CC16与总IgE呈显著负相关（r=-0.602P〈0.05）,血清CC16与ECP（r=0.153P〉0.05）及总IgE与ECP（r=0.290P〉0.05）无相关。结论血清CC16降低与总IgE、ECP水平增高在儿童哮喘发病过程中发挥重要作用;血清总IgE、CC16可反映哮喘发作严重程度;血清ECP水平高低并不能反映呼吸道炎症严重程度。     

过敏性紫癜患儿血清嗜酸细胞阳离子蛋白检测及意义

目的：探讨嗜酸细胞阳离子蛋白（ＥＣＰ）在过敏性紫癜（ＨＳＰ）中的作用。方法：应用ＰｈａｒｍａｓｉａＣＡＰＳｙｓｔｅｍＥＣＰＦＥＩＡ荧光酶标法测定４２例ＨＳＰ患儿血清ＥＣＰ水平。结果：急性发作期患儿血清ＥＣＰ水平显著高于正常对照组（Ｐ＜０００１），也显著高于经激素治疗缓解组（Ｐ＜０００１）；伴肾脏受累患儿血清ＥＣＰ明显高于无肾脏受累患儿（Ｐ＜００１）；而缓解组与对照组则差异无显著性。结论：ＥＣＰ参与了ＨＳＰ疾病的病理生理过程，血清ＥＣＰ测定对ＨＳＰ尤其是紫癜性肾炎临床诊断、病情评估及指导治疗有一定帮助     

哮喘患儿诱导痰Clara细胞分泌蛋白与嗜酸性粒细胞阳离子蛋白检测的意义

目的探讨Clara细胞分泌蛋白（CCSP）与嗜酸性粒细胞阳离子蛋白（ECP）在儿童支气管哮喘发病机制中的作用,评价其反映哮喘呼吸道炎症的价值。方法本院哮喘专科患儿31例。男18例,女13例;年龄3.7-12.0岁,平均7.6岁;均按全球哮喘防治创议（GINA）方案系统吸入糖皮质激素治疗,在慢性持续期和临床缓解期分别留取诱导痰标本。用酶联免疫吸附法（ELISA）测定CCSP水平,以Pharmacia UniCAP系统检测ECP水平。结果哮喘慢性持续期患儿诱导痰CCSP质量浓度明显低于临床缓解期（P〈0.001）,而ECP水平明显高于临床缓解期（P〈0.001）,且二者之间呈负相关（r=-0.676P〈0.001）。结论CCSP在哮喘的发病过程中起抗炎作用,而ECP起促炎作用,同时监测诱导痰CCSP、ECP的变化,可较好地反映呼吸道炎症情况,评价疗效及预后。     

嗜酸性粒细胞阳离子蛋白在毛细支气管炎病程中的变化

目的：探讨嗜酸性粒细胞阳离子蛋白(ECP)在毛细支气管炎病程中的变化。方法：应用瑞典法码西亚公司UniCAP100变应原检测仪检测,荧光酶标法测定ECP值。结果：病人组血清急性期ECP为(2.45±0.97) μg/L,恢复期为(2.19±0.38) μg/L,两者之间差异无显著性(P>0.05),与正常对照组血清ECP(2.68±1.19) μg/L相比差异亦无显著性(P>0.05);而痰液标本急性期ECP含量为(464.56±206.05) μg/L,比恢复期(165.9±88.7) μg/L有显著性增高(P<0.01)。结论：毛细支气管炎病人ECP含量在呼吸道有明显变化,可以提示疾病进程。     

哮喘患儿血清嗜酸细胞阳离子蛋白、总IgE及外周血嗜酸细胞水平的变化及临床意义

目的探讨哮喘患儿血清嗜酸细胞阳离子蛋白(ECP)、总IgE(T-IgE)和外周血嗜酸细胞(PBEC)的变化及临床意义。方法采用荧光酶联免疫法测定77例哮喘患儿血清ECP、T-IgE水平,同时进行PBEC计数和呼气峰流速(PEFR)测定(5岁以上)。结果哮喘患儿发作期ECP、T-IgE水平及PBEC计数明显升高;缓解期ECP水平降至正常,T-IgE水平及PBEC计数虽然明显下降,但仍高于对照组;发作期ECP水平与PEFR占预计值的百分比(PEFR％)呈显著负相关,T-IgE水平与PBEC计数呈显著正相关。结论PBEC和T-IgE水平升高是哮喘发病的重要因素,ECP水平可反映哮喘炎症的严重程度。     

Ratio of eosinophil cationic protein/eosinophil count as a new marker in children with acute asthma

BACKGROUND: It is a matter of concern whether serum eosinophil cationic protein (ECP) can be considered as a disease marker in children with acute asthma being treated without corticosteroids. METHODS: Fourteen children (nine male, five female, aged 6-12 years) with acute asthmatic exacerbation, administered the appropriate drugs, with the exception of systemic or inhaled corticosteroids, were examined. They were all free from apparent asthmatic attacks during a follow-up period of 1 month. Serum ECP, eosinophil count and forced expiratory volume in 1 s (FEV1) were measured at referral, on the day of discharge, 1 week and 4 weeks after discharge, respectively. RESULTS: The ratio of ECP/eosinophil count (ECP:Eo ratio), expressed as micrograms of ECP (microgram/L)/the number of eosinophil (/microL) x 1000, was also evaluated as a marker of eosinophil activation. Compared with the value at referral, FEV1 (% predicted) significantly increased on the day of discharge (P < 0.05), 1 week after (P < 0.05) and 4 weeks after discharge (P < 0.05). However, serum ECP concentrations showed no significant changes during the follow-up period. Eosinophil count showed no significant changes on the day of discharge or 1 week after discharge, but significantly increased 4 weeks after discharge (P < 0.05). In contrast, the ECP:Eo ratio significantly decreased on the day of discharge (P < 0.05), 1 week after (P < 0.05) and 4 weeks after discharge (P < 0.05). CONCLUSION: These data suggest that serum ECP is a poor disease marker in asthmatic children with acute exacerbation who receive no corticosteroid therapy, probably due to marked changes in the eosinophil count. However, the ECP:Eo ratio might be a better marker than serum ECP in such patients.     

Circadian variations in serum eosinophil cationic protein, and serum and urine eosinophil protein X

Biochemical evaluation of inflammation may be a useful adjunct to measures of pulmonary function and symptoms in children with asthma. However, little data have been provided to validate the markers in children. The aim of the present study was to assess circadian variations in serum eosinophil cationic protein (ECP), and serum and urine eosinophil protein X (EPX) in children. Five girls and two boys aged 10–14 years were studied. The first sample of urine consisted of urine collected from 24.00 hours the night before until 08.00 hours on the morning of the day of investigation. Thereafter urine was collected at 4-h intervals until 24.00 hours and in another 8-h interval from 24.00 to 08.00 hours. Blood samples for assessment of serum ECP and serum EPX were collected every 2 h during the 24 h. Statistically significant circadian variations in serum ECP (F=3.2, p=0.002), serum EPX (F=3.1, p=0.002) and in urine EPX/creatinine (F=5.4, p=0.003) were detected. The concentrations were higher during the night compared to daytime. Peak levels of serum ECP (mean [± SEM]) were found at 06.00 hours (16.3 [5.3] µg/l), trough levels at 08.00 hours (3.9 [0.7] µg/l) (p=0.01). Peak levels of serum EPX were seen at 06.00 (43.7 [9.5] µg/l) with trough levels at 12.00 hours (22.0 [3.5] µg/l) (p=0.01). Peak levels of urine EPX/creatinine occurred in urine collected from 24.00 to 08.00 hours (90.0 [27.7] µg/mmol), trough levels in the 16.00–20.00 hours sample (29.7 [8.9] µg/mmol) (p=0.02). Serum ECP, serum EPX and urine EPX exhibit a circadian variation in children with nocturnal and early morning peak levels. To avoid confounding influence from circadian variations in ECP and EPX in clinical studies blood or urine should be sampled at consistent times.     

Specific IgE antibodies and serum eosinophil cationic protein in children with atopic dermatitis alone

Both eosinophils and specific immunoglobulin E (IgE) to foods and mites have been considered involved in the pathogenesis of atopic dermatitis (AD). The relationship between eosinophils and specific IgE, however, remains to be elucidated. Blood eosinophil counts, serum eosinophil cationic protein (ECP) and IgE to egg white, cow's milk, soybean, rice and Dermatophagoides pteronyssinus (Dp) were measured in subjects with AD alone or bronchial asthma (BA) alone. Subjects with positive IgE titers (Pharmacia radioallergosorbent test (RAST) units > 0.7) of one or more items were defined as RAST-positive. Immunoglobulin E titers to egg white, cow's milk and soybean of subjects with AD were high in early childhood and declined with aging, whereas the titers of subjects with BA were negative or low. Immunoglobulin E titers to Dp were elevated after 1 year of age in both disease groups. Eosinophil cationic protein (ECP) levels and blood eosinophil counts in the AD and BA groups were significantly higher than those of non-atopic controls. No difference in ECP levels or blood eosinophil counts were observed between RAST-positive and negative groups. It is concluded that IgE to foods such as egg white, cow's milk and soybean might have a role in the pathogenesis of AD of young children, while IgE to mites might be involved in older children. Eosinophils may also participate in AD. However, different mechanisms may be responsible for the rise in specific IgE and high ECP levels and blood eosinophil counts.     

Serum eosinophil cationic protein and interleukin-5 in children with bronchial asthma and acute bronchiolitis

The aim of our study was to evaluate the clinical applicability of serum eosinophil cationic protein (ECP), interleukin-5 (IL-5) and total eosinophil counts in childhood asthma and bronchiolitis. These parameters were measured in 44 children aged 12-84 months with moderate and mild asthma during symptomatic and asymptomatic phases of disease. Fifteen of the patients were included at the time of admission to hospital due to an acute asthmatic attack, and ten of these were also examined one month after discharge. None of the patients were treated with glucocorticoids or cromoglycate at any time during the study. Serum ECP was significantly increased in the children with acute asthma compared to children with stable moderate asthma, stable mild asthma, as well as to controls. There was no difference between the groups with stable asthma or between stable asthma and controls, and there was large overlap between all groups of asthmatics and controls. Detectable levels of circulating IL-5 were demonstrated in eight of 15 children with acute asthma, with significantly higher levels in atopic children, whereas all samples from children with stable asthma and controls were negative. The results suggest that even though serum ECP and IL-5 increases during acute asthmatic attacks, these parameters cannot alone be used to discriminate between different groups of young children with stable asthma, nor between asthmatics and healthy controls. In addition, the same parameters of eosinophil inflammation were examined in serum samples from 25 children aged 1-17 months undergoing their first episode of acute bronchiolitis. Children with acute respiratory syncytial virus (RS V) bronchiolitis had significantly higher levels of serum ECP than those with RSV negative disease, whereas the total eosinophil counts were significantly decreased in all patients with acute bronchiolitis. Serum IL-5 was only detected in two children with acute bronchiolitis. The results suggest that the inflammation in RSV bronchiolitis differs from that induced by other viruses.     

哮喘患儿痰液、支气管肺泡灌洗液、血清嗜酸细胞阳离子蛋白和白细胞介素—5变化及其意义

目的　探讨哮喘患儿吸入糖皮质激素治疗前后痰液、支气管肺泡灌洗液 (BALF)、血清嗜酸细胞阳离子蛋白 (ECP)和白细胞介素 5 (IL 5 )水平 ,及其与肺通气功能的关系。方法　采用荧光酶联免疫法和双抗体夹心ABC ELISA法检测对照组 ( 17例 )、吸入糖皮质激素 (GC)治疗前后间歇期哮喘 (SA组 11例 )、发作期哮喘 (EA组 2 0例 )痰液、BALF、血清ECP、IL 5水平 ,同时检测肺功能。结果　治疗前EA组痰液、血清ECP明显高于对照组 ( P <0 .0 0 1,P <0 .0 1)和SA组 ( P 均 <0 .0 5 ) ;EA组痰液、血清IL 5明显高于对照组 ( P <0 .0 0 1,P <0 .0 1)和SA组 (P均 <0 .0 5 ) ;SA组痰液ECP浓度 >血清ECP浓度 >BALFECP浓度 ,痰液IL 5明显高于血清IL 5。治疗后两组痰液、BALF、血清ECP、IL 5均明显下降 (P <0 .0 1～P <0 .0 5 ) ,通气功能改善 (P均 <0 .0 5 )。哮喘患儿痰液与血清ECP之间、痰液与血清IL 5之间均相关 ,BALF与血清ECP显著性相关 ,BALF与血清IL 5无显著性相关。结论　痰液、血清、BALF中ECP和痰液、血清IL 5水平能反映哮喘气道炎症的活动情况 ,其中以痰液中浓度最高。ECP、IL 5与通气功能相互补充 ,可作为监测和指导哮喘抗炎治疗的指标     

RSV感染毛细支气管炎患儿血清Clara细胞分泌蛋白、总IgE及ECP的临床研究

目的 探讨血清Clara细胞分泌蛋白(Clara cell secretory protein,CCSP)、总IgE和嗜酸性粒细胞阳离子蛋白(eosinophil cationic protein,ECP)在呼吸道合胞病毒(respiratory syncytial virus,RSV)感染所致毛细支气管炎发病中的临床意义.方法 采用酶联免疫吸附法测定32例RSV感染引起的毛细支气管炎患儿血清的CCSP含量.同时应用uniCAP100变态反应检测仪检测血清总IgE、ECP;另设25例正常婴幼儿作对照.结果 与正常对照组比较,RSV组患儿血清的CCSP含量显著降低(t=10.52,P<0.001)、血清总IgE显著增高(t=5.96.P<0.01)、血清ECP水平差异无统计学意义(t=1.97,P0.05).RSV组患儿血清CCSP与总IgE之间呈显著负相关(r=-0.654,P<0.05)、血清CCSP与ECP(r=-0.166.P0.05)以及总IgE与ECP(r=0.137,P0.05)之间无统计学相关关系.结论 血清CCSP的降低与总IgE水平的增高在呼吸道合胞病毒感染所致毛细支气管炎发病中发挥着重要作用.呼吸道合胞病毒感染毛细支气管炎患儿血清ECP无异常改变.     

咳嗽变异性哮喘与儿童慢性咳嗽

咳嗽变异性哮喘(CVA)是儿童慢性咳嗽的常见原因之一,咳嗽为唯一或主要的临床症状,存在气道反应性增高或呼气流量的变异率异常。支气管舒张剂对咳嗽治疗的有效性是该症的基本诊断条件,肺通气功能和气道高反应性检查则是诊断的关键方法。在临床上应注意CVA与其他疾病的鉴别。使用抗炎药物的早期干预,有利于预防典型哮喘的发生。     

Montelukast and airway remodeling in children with chronic persistent asthma: an open study

We report a 4 yr follow up study of seven asthmatic children with chronic persistent asthma, high-residual volume and low-density areas at high-resolution computerized tomography after treatment with salmeterol and fluticasone. Improvement of lung function with disappearance of low-density areas in six patients after treatment with fluticasone and montelukast was obtained.