过敏性紫癜患者血清过敏原特异性IgE检测

我们采用酶联免疫吸附试验检测100例过敏性紫癜患者的血清过敏原特异性IgE,以进一步了解血清过敏原特异性IgE在过敏性紫癜中的作用,探讨各种变应原与疾病发生的关系。100例患者中血清总IgE水平>50IU/mL者64例,阳性率64%。其中对两种以上过敏原呈阳性反应者19例(29.7%),对一种过敏原呈阳性反应者45例(70.3%)。吸入组中特异性IgE阳性最常见的致敏原为霉菌(21/100),其次为蒿类花粉(6/100)和尘螨(7/100)。食物组最常见的为牛奶(16/100),其次为蛋白类(8/100)、鱼类(7/100)和虾蟹(6/100)。过敏性紫癜的发生与吸入性和食物性过敏原都有一定的相关性,霉菌和蛋白类食物是诱导过敏性紫癜复发的主要变应原。特异性IgE检测可帮助筛查过敏原,对疾病的预防具有积极意义。     

老年皮肤瘙痒症患者血清特异性IgE的检测分析

目的探讨血清特异性IgE在老年皮肤瘙痒症患者发病中的作用.方法 ELISA法检测36例老年皮肤瘙痒症患者血清特异性IgE水平.结果 26例(72.2%)对吸入性过敏原呈阳性反应,显著高于对食物性过敏原阳性反应者(33.3%,P<0.05).结论血清特异性IgE可能在老年皮肤瘙痒症患者发病中起着作用,老年皮肤瘙痒症与过敏原尤其是与吸入性过敏原有关.     

257例儿童荨麻疹血清特异性过敏原IgE检测结果分析

目的:探寻荨麻疹患儿常见的过敏原种类,为其治疗及预防提供依据.方法:采用Mediwiss 公司AllergyScreenAnalytic GmbH 过敏原检测系统,对257 例荨麻疹患儿进行血清特异性IgE(specific IgE,sIgE)和总IgE 检测,并在不同年龄组间进行比较.结果:257例荨麻疹患儿sIgE阳性142例(55.27%),总IgE阳性率69.65%.其中吸入性过敏原最常见的依次为户尘螨18.68%、霉菌组合17.51%、猫毛皮屑4.67%、屋尘4.28%和狗毛皮屑3.89%;食物性过敏原中,最常见的依次为牛奶28.79%、羊肉16.34%、牛肉7.00%、鸡蛋白5.45%和虾3.11%.比较＜3 岁组、3～6 岁组和＞6 岁组,户尘螨、猫毛皮屑、牛奶和羊肉sIgE阳性率的差异有统计学意义(P ＜ 0.05).结论:尘螨和霉菌是荨麻疹患儿最主要的吸入性过敏原,牛奶、牛羊肉、鸡蛋白是荨麻疹患儿最常见的食物性过敏原.血清sIgE检测为荨麻疹患儿提示了相关过敏原,可以针对性地回避相关过敏原.     

昆明地区1674例过敏原特异性IgE分析

目的了解昆明地区患者吸入性过敏原和食物过敏原特异性IgE抗体分布特点,为过敏性疾病防治提供参考。方法以2015年3月～2017年12月在昆明市第一人民医院就诊的1 674例过敏性疾病患者为实验对象。用欧蒙免疫印迹法检测血清过敏原特异性IgE抗体。结果 1 674例过敏性疾病患者中,吸入性过敏原以屋尘螨/粉尘螨检出率最高,食物过敏原以海洋鱼类组合检出率最高。婴幼儿期以食物过敏原过敏为主,随着年龄增长吸入性过敏原逐渐增多,而食物过敏原逐步减少。结论本地区吸入性过敏原以屋尘螨/粉尘螨较常见,食物过敏原以海洋鱼类组合较常见。血清过敏原的检测可为过敏性疾病的病因学诊断、治疗和预防提供帮助。     

青岛地区600例湿疹患者变应原特异性IgE抗体检测分析

正湿疹的病因复杂,往往难以确定,环境因素和食物因素是过敏性疾病的重要发病因素,且外部因素往往是湿疹反复发作的重要诱因。通过变应原特异性IgE抗体检测食物性过敏原和吸入性过敏原是目前临床上经常使用的方法。为了进一步了解青岛地区湿疹发病相关诱因,对青岛各区600例湿疹患者进行了食物性和吸入性变应原特异性IgE抗体检测。     

儿童荨麻疹患者过敏原特异性IgG和IgE检测结果分析

目的：分析儿童荨麻疹患者过敏原血清特异性IgG和IgE检测结果。方法：对63例儿童荨麻疹患者采用酶联免疫法检测食物过敏原特异性IgG,采用免疫印迹法检测食物及吸入性过敏原特异性IgE。结果： 食物过敏原IgG的总阳性率为76.19%,其中主要过敏原是鸡蛋、牛奶;食物过敏原IgE的总阳性率为41.27%,其中主要过敏原是鸡蛋、淡水鱼;食物过敏原IgG和IgE的检测结果不一致(P=0.000)。吸入性过敏原IgE的总阳性率为57.14%,其中主要过敏原是尘螨和蟑螂。不同年龄组患儿过敏原阳性检出率无明显差异。结论：针对儿童荨麻疹患者进行血清特异性IgG和IgE抗体进行联合检测,有助于明确过敏性皮肤病的过敏原,对临床过敏性疾病的预防和治疗具有重要意义。     

2 468例过敏性皮肤病患者过敏原检测结果分析

目的分析2 468例过敏性皮肤病患者过敏原检测结果。方法收集2014年5月至2018年12月,我院接诊的2 468例过敏性皮肤病患者的临床资料,分析过敏原检测结果。结果总IgE 2级者血清sIgE阳性率显著高于总IgE 1级者,总IgE 3级者血清sIgE阳性率显著高于总IgE 1级、2级者,差异显著(P 0.05)。1 123例血清sIgE阳性者中单纯吸入性过敏原阳性者602例,单纯食入性过敏原阳性者156例,吸入性和食入性过敏原同时阳性者365例。其中吸入性过敏原前三位为户尘螨/粉尘满、霉菌混合物、猫毛皮屑,食入性过敏原前三位为牛奶、海鱼/海蟹、海虾。结论本地区过敏性皮肤病患者过敏原以吸入性过敏原为主,主要致敏物为户尘螨/粉尘满、霉菌混合物、猫毛皮屑。     

皮肤血管病及淋巴管病

20071941过敏性紫癜患者血清过敏原特异性IgE检测分析/许(泸州医学院附院皮肤科),陈德宇,钟建桥…∥临床皮肤科杂志.-2007,36(2).-79用ELISA法检测76例过敏性紫癜患者的血清过敏原特异性IgE抗体。结果63·2%(48例)的患者血清过敏原特异性IgE抗体阳性,其中79·2%(38例)的患者对2     

167例荨麻疹患者血清过敏原特异性IgE的检测

目的：探讨荨麻疹的病因,为预防和治疗提供依据。方法：采用体外定性的酶免疫分析法,对167例荨麻疹患者血清中过敏原特异性IgE抗体进行定性检测。结果：150例接受吸入性过敏原特异性IgE抗体检测的患者,107例（71．33％）至少有一项过敏原阳性;142例接受食物性过敏原特异性IgE抗体检测的患者,109例（76、76％）至少有一项过敏原阳性：125例同时接受吸入性及食物性过敏原特异性IgE抗体检测的患者,68例（54．4％）对吸入性及食物性过敏原均呈阳性,而仅有10例（8％）对吸入性及食物性过敏原均呈阴性。结论：荨麻疹病因复杂,吸入性和／或食物性过敏原常是大多数荨麻疹患者发病的重要原因,通过对患者血清过敏原特异性IcE的检测,为临床治疗以及预防提供依据。     

复发性过敏性紫癜患儿血清特异性IgE检测

过敏性紫癜是儿童常见的毛细血管变态反应性疾病,病因复杂。近年来有研究表明,约有一半以上的过敏性紫癜患者与自身免疫关系密切。为进一步了解过敏性紫癜患儿的致病因素,以及与过敏原的关系,笔者对130例复发性过敏性紫癜患儿进行了血清特异性IgE检测,现报告如下。     

过敏专科门诊3 051例湿疹皮炎患者血清特异性IgE检测结果分析

目的分析湿疹皮炎患者血清特异性IgE检测结果。方法回顾2021年4月1日至2022年3月31日于华山医院过敏专科门诊就诊的3 051例湿疹皮炎患者, 利用Phadia过敏原检测系统检测患者的血清特异性IgE水平, 计算各项过敏原的检测阳性率, 分析湿疹皮炎患者的常见吸入性过敏原和食物过敏原。计数资料组间比较采用χ2检验。结果 3 051例湿疹皮炎患者中, 特应性皮炎1 412例, 其他湿疹/皮炎1 639例。1 629例(53%)过敏原阳性, 阳性过敏原数为(3.0 ± 1.6)个。最常见的3种吸入性过敏原分别是粉尘螨(904/1 522例, 59%)、户尘螨(891/1 513例, 59%)和链格孢霉(206/1 068例, 19%);最常见的3种食物过敏原分别是虾(251/1 432例, 18%)、鸡蛋白(165/992例, 17%)和牛奶(149/994例, 15%)。3 051例中, 25例(1%)年龄< 2岁, 571例(19%)2 ～ 12岁, 285例(9%)12 ～ 18岁, 2 170例(71%) > 18岁。在< 2岁、2 ～ 12岁患者组中, 最...     

Correlation of serum total IgE, eosinophil granule cationic proteins, sensitized allergens and family aggregation in atopic dermatitis patients with or without rhinitis

Atopic dermatitis (AD) is a complex disease with both a genetic background and environmental interactions. Although multiple linkage-analyses about AD have been studied, there have been only a few family aggregation tests of AD or perennial allergic rhinitis (AR) to date. The association of allergen-specific IgE in AD and atopic dermatitis with allergic perennial rhinitis (ADR) have also been seldom discussed. The purpose of this study was to evaluate family aggregation and assess allergen-specific IgE in patients with AD and ADR. We also planned to investigate the effect of family history of AD on the prevalence of allergen-specific antibodies. The serum levels of IgE, eosinophil cationic protein (ECP) and major basic protein (MBP) were measured and compared in patients with AD and those with ADR. Proportional analysis compared allergen-specific IgE between AD and ADR. The family aggregation was conducted to estimate the odds ratio for various atopic diseases in different family members. Total IgE and allergen-specific antibodies in serum were compared between those patients who had AD with AR and those without. The result revealed that allergic rhinitis is the most common concomitant atopic disease associated with AD. The ADR group was more likely to have serum mite-, cockroach-, and feather-specific IgE. The positive rates for wheat, peanut and soybean were higher in those AD without rhinitis. In the family aggregation of AD, the odds ratio for siblings was higher than for parents, the ratios for brother and sister were 9.91 and 8.75, respectively. However, the odds ratio for parents of ADR was higher than siblings; the ratios for father and mother of ADR were 8.22 and 2.94, respectively. AD patients with family histories of AD were more likely to have mite-, soybean-, and peanut-specific antibodies in their serum. We concluded that aeroallergens are the most important allergens aggravating atopic diseases in Taiwan. Food plays an important role in the pathogenesis of AD. Measurement of serum total IgE combined with the MAST-CLA test could be helpful in the diagnosis of atopic diseases. The differential aggregation tendency for AD and ADR implicated the complexity of the gene-environment interaction in these atopic diseases.     

Skin test results but not serology reflect immediate type respiratory sensitivity: a study performed with recombinant allergen molecules.

The diagnosis of type I allergy, an IgE-antibody-mediated hypersensitivity disease affecting more than 25% of the population, is based on the measurement of allergen-specific serum IgE levels and provocation testing. Whether the determination of allergen- specific serum IgE levels can replace in vivo provocation testing for allergy diagnosis is a controversial issue. We used purified recombinant timothy grass and birch pollen allergens to compare by skin prick and nasal provocation testing as well as by serology in vivo sensitivity with antibody-binding capacity in 24 pollen allergic patients and eight control individuals. Results from biologic tests were correlated with each other and with allergen-specific IgE and IgG1-4 levels. IgE-reactive allergens induced immediate skin and nasal reactions, but the intensity of the allergic tissue reactions was not correlated with either the levels of allergen-specific IgE or the levels of allergen-specific IgG antibodies. Less frequently detected allergens with low IgE-binding capacity were able to induce strong allergic reactions comparable to those caused by major allergens with high IgE-binding capacity. In contrast, skin test and nasal provocation results were significantly correlated (r = 0.63, p < 0.01). Our study thus demonstrates on a molecular level that skin testing provides a better reflection of immediate type respiratory sensitivity than serologic measurements. These results have implications for allergy diagnosis and, in particular, for the selection of relevant allergen components for specific immunotherapy.     

Component-resolved diagnosis (CRD) of type I allergy with recombinant grass and tree pollen allergens by skin testing

The diagnosis of Type I allergy is based on the measurement of allergen-specific IgE antibodies and on provocation with allergens, most frequently conducted by skin testing. Both forms of diagnosis are currently performed with allergen extracts that are difficult to standardize regarding their allergen contents, and which contain additional undefined nonallergenic components. We report the expression in Escherichia coli and purification of some of the most relevant timothy grass- and birch pollen allergens. Recombinant timothy grass- (rPhl p 1, rPhl p 2, rPhl p 5) and birch pollen (rBet v 1, rBet v 2) allergens were purified and used for the measurement of allergen-specific IgE and IgG subclass responses as well as for skin prick testing in 55 pollen allergic patients and 10 nonatopic individuals. Results obtained showed that the recombinant allergens allowed in vivo allergy diagnosis in 52 of 54 of the grass pollen and in 35 of 36 of the birch pollen allergic patients. Positive skin reactions were observed almost exclusively in patients containing detectable allergen-specific IgE antibodies but not in the nonatopic group; however, sensitivity to a given allergen as measured by skin reactivity was weakly correlated with the levels of allergen-specific IgE. Our results demonstrate that recombinant allergens can be used for component-resolved skin test diagnosis (CRD) of the patients' allergen sensitization profile, whereas allergen extracts at best allow to identify allergen-containing sources. CRD may thus represent the basis for novel forms of patient-tailored immunotherapy.     

Rekombinante Allergene

Component-resolved diagnosis of allergies allows disease-specific patterns of sensitization in some conditions such as allergic bronchopulmonary aspergillosis ABPA). By determination of IgE against important pollen allergens such as Bet v 1, Ole e 1 or Phl p1/Phl p 5, more precise guidance for allergen-specific immunotherapy may be achieved, as pollen extracts contain mostly these major allergens. Sensitizations against minor allergens such as profilins or polcalcins influence the outcome of IgE measurements against full allergen sources, but are often of limited clinical relevance. In food allergy, frequent cross reactivity between pollens such as birch pollen via Bet v 1/PR10 proteins can be identified. Sensitization against some storage proteins such as peanut (Ara h 2) or lipid transfer proteins of peach (Pru p 3) or hazelnut (Cor a 8) may indicate an increased risk of severe anaphylactic reactions. Exercise-induced anaphylaxis, unclear sensitizations against latex or double-positivity in insect allergy are other useful indications for component-resolved diagnosis. Microarray-based allergen chip diagnosis makes possible today the detection of IgE against more than 100 allergens in tiny amounts of serum and is very promising, but still needs evaluation and optimization in regard to allergen selection and sensitivity.     

荨麻疹患者特异性IgE及过敏原检测与分析

目的为进一步了解荨麻疹的致病因素及各种因素之间的相互关系。方法采用过敏原体外检测试剂盒、自体血清皮肤试验及斑贴试验等方法对不同类型荨麻疹患者进行血清特异性IgE、自身抗体及接触性过敏原检测。结果116例患者中有84例(72.4%)至少有一项过敏原阳性。至少一项强阳性的16例,强阳性率为13.8%。各种物质的阳性率差异无显著性(P>0.05)。53例自体血清皮肤试验有20例(37.7%)出现阳性反应。有26例同时进行了上述2项试验。14例自体血清皮肤试验阳性的荨麻疹患者血清特异性IgE均无强阳性反应,而12例自体血清皮肤试验阴性的患者中有4例(33.3%)呈强阳性反应(P<0.05)。对21例慢性荨麻疹患者进行斑贴试验,有19例(90.5%)至少对其中一种物质过敏。20种物质中有15项出现阳性,其中重铬酸钾、硫酸镍、橡胶的阳性率达到了38.1%。结论荨麻疹的病因是多方面的,既有可能对外界物质过敏,又有可能存在自身免疫的问题。同一患者可能同时存在2种不同类型的变态反应;接触性过敏原可引起接触性荨麻疹。     

过敏性紫癜患者血清中TRANCE和BLys的检测

目的了解TRANCE和BLys在过敏性紫癜发病中的作用。方法通过酶联免疫吸附试验(ELISA)检测过敏性紫癜患者血清中TRANCE和BLys的表达水平。结果过敏性紫癜患者血清中TRANCE和BLys的表达水平(2.83±0.96,90.48±2.64)与正常对照组(0.85±0.35,82.02±4.04)相比均升高(P<0.01),伴有肾脏损害患者血清中TRANCE,BLys的表达水平(4.09±0.45,93.92±2.07)与单纯型患者(2.44±0.70,89.42±1.75)相比显著增高(P<0.01)。患者血清中TRANCE与BLys的表达水平呈显著正相关(r=0.515,P<0.01)。结论过敏性紫癜患者血清中TRANCE,BLys的表达异常增高,可能与其发病有关。     

蛋白质芯片技术在过敏原特异性IgE检测中的初步应用

目的研制过敏原特异性IgE检测蛋白芯片,对该芯片的检测灵敏性和特异性进行评估。方法将不同浓度的过敏原提取液按一定阵列方式点样到固相载体上,经过固定,封闭,洗涤步骤,加入待检血清,血清中的抗体与基片上的抗原反应,用生物素-亲和素系统使Cy3荧光信号扩增,最后用Scanarray4000激光共聚扫描仪成像。与IVT试剂盒(EIA法)进行了对比检测。结果芯片的灵敏性和特异性较好,血清稀释128倍仍可检测到豚草特异性IgE的存在。芯片法对食入性过敏原的检测效果好,对吸入性过敏原的检测效果比EIA法差。结论过敏原特异性IgE抗体检测芯片,具有样本血清量少,操作简便,价格低廉等优点,具有较强的临床检测使用价值,是未来诊断试剂的发展方向。