慢性荨麻疹患者粉尘螨变应原皮肤点刺反应与自体血清皮肤反应的关系

目的 探讨自体血清的自身反应和粉尘螨诱发的变态反应在慢性荨麻疹（CU）发病中的作用和相关性。方法 对831例CU患者同时进行自体血清皮肤试验（ASST）及粉尘螨皮肤点刺实验（SPT）,对ASST与粉尘螨变应原阳性之间的相关性进行分析。结果 831例CU患者ASST和粉尘螨的总阳性率分别为51.74%和64.62%,ASST阳性组和阴性组粉尘螨SPT阳性率分别为56.52%和73.86%,两组差异有统计学意义（P < 0.05）。ASST阳性组中ASST阳性程度和粉尘螨SPT阳性程度呈负相关性（P < 0.05）。结论 自体血清皮肤反应和粉尘螨变应原诱发的变态反应均在慢性荨麻疹的发病机制中呈负相关,对CU患者同时进行变应原和ASST检测有助于临床分型和治疗。     

慢性自发性荨麻疹患者血清特异性IgE抗体与自体血清皮肤试验的关系

目的：比较慢性自发性荨麻疹(CSU)患者血清特异性IgE抗体检测结果与自体血清皮肤试验(ASST)的关系,探讨ASST的临床意义。方法：对305例慢性自发性荨麻疹患者同时进行血清特异性IgE抗体检测及自体血清皮肤试验(ASST),对两组的阳性率进行统计分析。结果：305例CSU患者螨虫组合(屋尘螨/粉尘螨)血清特异性IgE抗体与ASST总阳性率分别为47.87%和58.03%,ASST阳性组和阴性组中螨虫组合血清特异性IgE抗体阳性率分别为34.46%和66.41%,两组差异有统计学意义(P<0.05)。ASST阳性程度与对应螨虫、屋尘、狗、大豆、虾血清特异性IgE抗体检测水平呈负相关性(P<0.05)。结论：CSU患者部分常见变应原血清特异性IgE抗体与自体血清皮肤试验结果呈负相关,建议将ASST纳入常规CSU临床检测,ASST阳性的患者可以不进行血清特异性IgE抗体检测。     

自体血清皮肤试验在慢性特发性荨麻疹中的应用研究

目的探讨自体血清皮肤试验(autologousserumskintest,ASST)在慢性特发性荨麻疹(chronicidiopathicurticaria,CIU)中的临床应用价值,分析ASST阳性的CIU患者的临床特点。方法采用ASST,对CIU患者组185例、健康对照组20名,过敏性疾病对照组50名患者(湿疹12例,异位性皮炎9例,面部皮炎6例,人工荨麻疹11例,支气管哮喘4例,过敏性鼻炎8例),进行测定,并记录临床症状评分及病史。结果185例CIU患者中ASST阳性率为35.68%(66/185),过敏疾病对照组及健康对照组全部阴性,3组间阳性率差异有显著性(P<0.05)。按ASST阳性结果将CIU组分为ASST阳性组与ASST阴性组。ASST阳性组的组胺风团直径较其他3组大(P<0.05),ASST阳性组在年龄分布、性别、病程等方面与ASST阴性组无统计学差异,ASST阳性的CIU患者皮疹的风团数量较多(P=0.001),风团持续时间较长(P=0.003),具有甲亢病史的患者(6.48%,12/185)出现ASST阳性结果的比例较高(58.3%,7/12)。结论在CIU患者血清是否存在自身抗体的初筛检查中,自体血清皮肤试验具有临床诊断价值及特异性,ASST阳性的慢性荨麻疹患者具有较严重的临床症状。     

自体血清皮肤试验在慢性荨麻疹的应用进展

自体血清皮肤试验(ASST)是筛选慢性荨麻疹患者是否存在自身反应的特异性和敏感性方法之一,但目前尚无统一的试验操作流程和标准的结果判定方法.经典的判断标准是以自体血清皮内注射后诱导的风团或红晕与原有皮丘或阴性对照的平均直径差≥1.5 mm定义为阳性,这种方法的缺陷是不能对结果进行阳性程度分级.ASST阳性的慢性荨麻疹比ASST阴性者风团更大、瘙痒更明显、病程更长、治疗需用的抗组胺药更多,且与多种自身免疫性疾病有更密切的关系.临床应用中慢性荨麻疹患者进行ASST检测对慢性荨麻疹的病因探讨、临床分型和治疗均有重要指导作用.     

154例慢性自发性 荨麻疹患者自体血清皮肤试验结果分析

目的探讨慢性自发性荨麻疹患者自体血清皮肤试验在临床中的应用价值。方法对154例慢性自发性荨麻疹患者及30名健康志愿者做自体血清皮肤试验,并对结果进行分析。结果 154例患者中67例(43.5%)患者检出阳性结果,对照组全部阴性;自体血清皮肤试验阳性与阴性的慢性自发性荨麻疹患者在性别、年龄分布及病程上差异无统计学意义(P0.05),自体血清皮肤试验阳性的慢性自发性荨麻疹患者症状评分及瘙痒持续时间明显高于阴性患者(P0.05),自体血清皮肤试验阳性程度与瘙痒持续时间呈正相关(P0.05)。自体血清皮肤试验阳性的慢性自发性荨麻疹患者伴发过敏史(药物、食物、吸入物)的比例高于阴性的患者(P0.05)。结论自体血清皮肤试验阳性的慢性自发性荨麻疹患者较阴性者病情重,该试验作为慢性荨麻疹功能性自身抗体的筛选试验可在临床上广泛应用。     

慢性荨麻疹患者自体血清皮肤试验与抗FcεRI抗体的关系分析

目的:了解慢性荨麻疹患者自体血清皮肤试验(ASST)与血清抗FcεRI抗体的关系.方法:对病例组56例慢性荨麻疹患者进行ASST,同时采用酶联免疫吸附试验法(ELISA)检测血清抗FcεRI抗体水平,并与对照组24名正常人比较.结果:病例组ASST阳性率为55 4%,血清抗FcεRI抗体水平为(2 89±2 36) U/L,两者均高于对照组(P<0 01);ASST阳性与阴性慢性荨麻疹患者血清抗FcεRI抗体水平分别为(3 23±2 62) U/L和(2 18±1 84) U/L,两者差异有统计学意义(P<0 05).结论:慢性荨麻疹患者ASST与抗FcεRI抗体水平有关,ASST阳性慢性荨麻疹患者血清抗FcεRI抗体水平较高.     

慢性荨麻疹患者自体血清皮肤试验结果分析

目的 :探讨慢性荨麻疹患者自体血清皮肤试验的意义。方法 :对 4 0例慢性荨麻疹患者以及2 0例正常对照者、1 0例皮肤划痕症、1 0例异位性皮炎患者进行自体血清皮肤试验。结果 :4 0例慢性荨麻疹患者中 1 3例 (32 5 % )自体血清皮肤试验阳性 ,正常对照组和皮肤划痕症及异位性皮炎患者均为阴性 ,慢性荨麻疹患者的自体血清皮肤试验阳性率显著高于正常对照组及皮肤划痕症和异位性皮炎组 (P值均 <0 0 5 )。结论 :自体血清皮肤试验的测定对自身免疫性慢性荨麻疹有一定的诊断意义。     

慢性自发性荨麻疹患者自体血清皮肤试验与白细胞介素-18的关系

 目的:了解慢性自发性荨麻疹（CSU）患者自体血清皮肤试验（ASST）与白细胞介素-18（IL-18）的关系,探讨慢性荨麻疹的发病机制。方法：对60例CSU患者（病例组）和30例健康者（对照组）分别进行ASST检查及采用ELISA法测定血清IL-18水平,并比较两组间的差别;同时比较病例组ASST阳性与阴性患者的血清IL-18水平。结果：病例组ASST阳性率为53.3%,对照组为3.3%,两组比较差异有统计学意义（X²=21.50,P<0.01）。病例组血清IL-18水平为(64.7±41.9) pg/mL,对照组为(44.9±15.7) pg/mL,两组比较差异有统计学意义（t=2.50,P<0.05）。病例组ASST阳性32例,血清IL-18水平为(72.4±47.6) pg/mL,ASST阴性28例,IL-18水平为(48.7±25.3) pg/mL,两者差异有统计学意义（t=3.27,P<0.05）。结论：慢性自发性荨麻疹患者ASST阳性率及血清IL-18水平均升高, IL-18可能参与了慢性自发性荨麻疹的免疫发病机制。     

雷公藤多苷联合咪唑斯汀治疗慢性特发性荨麻疹22例疗效观察

目的:探讨雷公藤多苷对自体血清皮肤试验(autologous serum skin test,ASST)阳性的慢性特发性荨麻疹(chronic idiopathic urticaria,CIU)的疗效。方法:对185例CIU患者采用自体血清皮肤试验,将ASST阳性的43例患者随机分为两组,治疗组服用雷公藤多苷和咪唑斯汀,对照组服用咪唑斯汀,记录临床症状评分及病史,治疗后第4周再次进行ASST。结果:治疗组痊愈率为33.3%,对照组为5.26%;有效率两组分别为71.4%和36.8%,两者差异均有统计学意义(P<0.05)。第4周两组ASST的血清风团及组胺风团直径小于治疗前直径,药物有明显的抑制作用(P<0.05)。两组对ASST的血清风团及组胺风团的影响程度差异无统计学意义(P>0.05)。结论:雷公藤多苷能有效治疗ASST阳性的慢性特发性荨麻疹,安全性好。     

皮肤点刺试验检测慢性荨麻疹变应原的临床意义

目的探讨皮肤点刺试验检测慢性荨麻疹变应原的临床意义。方法用20种不同的变应原进行皮肤点刺试验,生理盐水为阴性对照,组胺为阳性对照。结果292例慢性荨麻疹患者中,有210例为阳性反应,阳性率为71.92%,单个变应原中,以吸入性粉尘螨的阳性率为最高,达63.69%。结论皮肤点刺试验特异性高,为慢性荨麻疹患者寻找可能的变应原提供依据,并力求避免接触,以提高患者的生活质量。     

The Relation of Autologous Serum Skin Test and Autologous Plasma Skin Test Result with Various Clinical and Laboratory Findings in Patients with Chronic Spontaneous Urticaria

BackgroundDespite the autologous serum skin test (ASST) and autologous plasma skin test (APST) is widely used test accessing whether a patient with chronic spontaneous urticaria (CSU) has autoreactivity or not, the clinician often encounter difficulty making correlation between the test result and clinical implications.ObjectiveThis study was aimed to find any clinical and laboratory findings related to the ASST and APST response. Agreement and correlation between the two tests was also analyzed.MethodsA retrospective study was conducted on 300 CSU patients who underwent ASST, APST. The subjects were divided into four groups according to the skin test result. Also, the degree of serum and plasma response was recorded.ResultsBoth ASST and APST positive group had shorter duration of the disease, higher incidence of at least one episode of angioedema than negative group. There were no significant differences in the positivity for autoantibodies including antinuclear, ds-DNA, and thyroid-related between the two groups. The predicted positive rate of ASST and APST according to age showed bimodal peak and decreasing pattern according to disease duration. Predicted positivity of both tests declined with increase in total immunoglobuline E (IgE) level. In the correlation study, the two tests showed high correlation coefficients.ConclusionASST and APST positivity may be related to disease duration and severity of CSU. The two tests showed a generally consistent result. Autoreactivity may be gradually lost as disease continues. We suggest the autoreactivity in CSU could arise independently from IgE mediated immune process.     

Chronic Idiopathic Urticaria and Thyroid Autoimmunity: Perplexing Association

Background:

Autologous serum skin test (ASST) is the most commonly used laboratory test to differentiate chronic autoimmune urticaria patients from chronic idiopathic urticaria patients without autoantibodies. Thyroid autoimmunity is the original paradigm for autoimmune disease in general and many previous studies show increased prevalence of thyroid autoantibodies and deranged thyroid hormone profile in chronic idiopathic urticaria patients.

Aim:

To find the association between thyroid autoimmunity and chronic autoimmune urticaria, if any.

Materials and Methods:

The chronic idiopathic urticaria patients were divided into two subgroups based on autologous serum skin test. Thyroid autoantibodies were estimated in 40 patients each of ASST positive and ASST negative groups. Further, thyroid hormone profile was done in cases with significant titers of thyroid autoantibodies. Forty patients, who had never suffered from urticaria, represented the control group.

Results:

The prevalence of thyroid autoantibodies did not differ significantly among the ASST positive (20%) and ASST negative patients (15%). The control group had low prevalence of these autoantibodies (5%).

Conclusion:

The almost equal prevalence of thyroid autoantibodies in two subgroups of chronic idiopathic urticaria patients suggests possibly the same etiopathogenesis of the two subgroups. The two subgroups probably form a continuum, or even may be the same entity.     

特异性免疫治疗对屋尘螨特异性IgE抗体阳性慢性荨麻疹的疗效观察

目的：观察特异性免疫治疗（SIT）对慢性变应性荨麻疹的疗效。方法：对慢性特发性荨麻疹患者在临床、病史评估的基础上，进行皮肤点刺试验（SPD、血清特异性IgE（sIgE）抗体检测（unicap法）及自体血清皮肤试验（ASST）。对病程在半年以上、尘螨SPT阳性且sIgE抗体≥2级、ASST阴性的262例患者，在给予抗组胺药物基础治疗的同时，采用长效尘螨变应原制剂进行SIT治疗。在SIT治疗开始时、0．5年及1年时分别进行临床疗效评估和血清sIgE检测。结果：SIT后大多数患者自觉症状明显改善，血清屋尘螨sIgE抗体明显降低。0．5年时随访221例有效，41例无效（有效率为84．35％），1年时随访243例有效，19例无效（有效率为92．74％）。结论：特异性免疫治疗对屋尘螨抗体阳性的慢性变态反应性荨麻疹有良效。     

The autologous serum skin test in a cohort of chronic idiopathic urticaria patients compared to respiratory allergy patients and healthy individuals

BACKGROUND: A positive autologous serum skin test (ASST) is considered to reflect the presence of anti-FceRI and/or anti-IgE autoantibodies that are capable of activating mast and basophil cell degranulation. The ASST is regarded as a reliable in vivo test in chronic idiopathic urticaria (CIU) patients, with diagnostic, therapeutic and prognostic implications. However, positive ASST results have also occasionally been demonstrated in patients with other diseases and in healthy subjects. OBJECTIVE: To evaluate the specificity and sensitivity of the ASST in a cohort of CIU patients compared to a cohort of respiratory-allergic patients and a group of normal individuals. METHODS: ASST was performed in a cohort of 116 subjects, 47 subjects with seasonal allergic rhinitis, 32 respiratory-symptom-free CIU patients, and 37 healthy individuals. RESULTS: The results were compared statistically to those of the CIU patients. The intradermal injection of autologous serum induced a weal and flare reaction in 17/32 (53.1%) CIU patients; 14/47 (29.8%) patients with seasonal allergic rhinitis (P=0.06) and in 15/37 (40.5%) of the healthy controls (P=0.34). The sensitivity and specificity of the ASST in the CIU patients and the seasonal allergic rhinitis patients was 53 and 28%, respectively. When comparing the CIU patients with the healthy controls the sensitivity and specificity was 55 and 31%, respectively. The positive and negative predictive values of the ASST when comparing CIU patients with healthy controls were 53 and 59.5%, respectively. The positive and negative predictive values of the ASST in the CIU patients compared to seasonal allergic rhinitis patients were 53 and 70%, respectively. CONCLUSION: The relatively low sensitivity and specificity of the ASST in the CIU patients compared to the seasonal allergic rhinitis patients and healthy controls warrants a more critical interpretation of the ASST in chronic idiopathic urticaria.     

Clinical and Investigative Assessment of Patients with Positive Versus Negative Autologous Serum Skin Test: A Study of 80 South Indian Patients

Background:

Chronic urticaria (CU) is defined as urticaria persisting daily as or almost daily for more than 6 weeks and affecting 0.1% of the population. Mast cell degranulation and histamine release is of central importance in the pathogenesis of CU. About 40-50% of the patients with chronic idiopathic urticaria demonstrate an immediate wheal and flare response to intra-dermal injected autologous serum. This led to the concept of autoimmune urticaria.

Aims:

To determine the occurrence, clinical features, associated clinical conditions, comorbidities of autoimmune urticaria and to compare this with chronic spontaneous urticaria. This study aimed to find the frequency of autologous serum skin test (ASST) positive patients among patients with CU and to identify the clinical and laboratory parameters associated with positive ASST.

Materials and Methods:

Prospective correlation study was done on 80 chronic urticaria patients, more than 6 weeks duration, attending outpatient department of dermatology during a period of November 2007 to January 2010. Patients were subjected to ASST, complete blood count, urine routine examination, liver function tests, renal function tests, thyroid function tests, H. pylori antibody tests, C3 and C4 complement level estimation, antinuclear antibody, and urine analysis.

Results:

ASST was positive in 58.75% and negative in 41.25% of the patients, respectively. Out of 33 patients with history of angioedema, 9 (27.3%) patients were in ASST negative group and 24 were in positive group, this was statistically significant. Both groups showed no statistically significant difference for epidemiological details.

Conclusion:

ASST is considered a screening test for an autoimmune urticaria, which decreases the rate of diagnosis of “idiopathic” form of chronic urticaria. Patients with an autoimmune urticaria have more severe urticaria, more prolonged duration, more frequent attacks, and angioedema. Identification of autoimmune urticaria may permit the use of an immunotherapy in severe disease unresponsive to anti-histamine therapy.     

自体血清皮肤试验阳性与阴性慢性荨麻疹患者临床特点分析

目的 探讨自体血清皮肤试验阳性的慢性荨麻疹患者的临床特点。方法 从82例慢性荨麻疹患者中筛选出29例自体血清皮肤试验阳性患者,对其症状体征及病史等进行分析,并用放免法测定其血清中的抗甲状腺球蛋白抗体(TG-AB)和抗甲状腺微粒体抗体(TM-AB),与自体血清皮肤试验阴性的慢性荨麻疹患者进行对比。结果 自体血清皮肤试验阳性与阴性的慢性荨麻疹患者在年龄分布、病程上差异无统计学意义(P>0.05)。两组患者症状体征评分比较,自体血清皮肤试验阳性患者皮疹发作时风团较大(P<0.05),数量较多(P<0.01),每次发作持续时间较长(P<0.05),瘙痒更剧烈(P<0.05);但风团外观较红,隆起不明显(P<0.01);而两组患者的皮疹发作频次差异无统计学意义(P>0.05)。自体血清皮肤试验阳性的慢性荨麻疹患者伴发血管神经性水肿及系统症状的比例较高,伴随其他自身免疫相关疾病和甲状腺抗体阳性的比例也明显高于自体血清皮肤试验阴性患者(P<0.05)。结论 自体血清皮肤试验阳性的慢性荨麻疹多表现为较严重的慢性荨麻疹。