McAb－BA－ELISA检测人血清青霉素特异性IgE

利用单克隆抗体及生物素亲和素系统，建立ＭｃＡｂ－ＢＡ－ＥＬＩＳＡ检测人血清青霉素特异性ＩｇＥ。２７例青霉素Ｉ型变态反应患者中，６例青霉素特异性ＩｇＥ（２２．２％）阳性；而１００例非青霉素过敏者均阴性，且随机使用青霉素无反应。结果尚表明青霉素特异性ＩｇＧ并未明显影响青霉素特异性ＩｇＥ的检测（Ｐ＞０．０５）。     

116例变应性皮肤病患儿血清特异性IgE及总IgE检测分析

目的:了解小儿荨麻疹和遗传过敏性皮炎(AD)患者血清特异性 IgE(SIgE)及总IgE(TIgE)水平变化。方法:采用Mast检测系统,对116例变态反应性皮肤病患儿血清SIgE和TIgE进行检测。结果:荨麻疹和AD患儿均以屋尘螨、粉尘螨阳性检出率最高,分别为荨麻疹(20.5％、17.9％)和AD(34.2％、34.2％)。在AD患儿,家尘、狗毛、猫毛、牛奶、鸡蛋亦有较高的阳性检出率。结论:屋尘螨、粉尘螨是广州地区小儿荨麻疹和AD患者最常见的变应原。     

基于过敏性疾病和健康儿童的淋巴细胞精细分型病例对照研究

背景：过敏性疾病的诊断缺乏明确的检测标准,主要依赖于病史,在无过敏原刺激情况下则无临床症状,诊断更加困难,寻找辅助诊断过敏标志物显得非常重要。 目的：检测过敏儿童淋巴细胞精细分型特征,期望对过敏性疾病的诊断提供新的标志物。 设计：病例对照研究。 方法：选择食物和呼吸道过敏儿童作为过敏性疾病组,选择与过敏性疾病组同时期在医院健康体检正常、性别和年龄匹配的儿童为健康对照组。采用流式细胞术分析对其淋巴细胞精细分型进行检测。 主要结局指标：淋巴细胞精细分型。 结果：过敏性疾病组30例,平均年龄3.6（0.7~10.6）岁;健康对照组27名,平均年龄4.1 (0.8~11) 岁。两组年龄、性别差异无统计学意义（P分别为0.616和0.574）。T淋巴细胞精细分型：Th2细胞占效应辅助性T细胞比例和Th2/Th1比值过敏性疾病组高于健康对照组［（31.34±2.52）% vs (20.02±2.05)%,（6.86±1.51） vs (2.73±0.35)］,差异均有统计学意义。B淋巴细胞精细分型：成熟B细胞比例及绝对计数、浆母细胞绝对计数、IgE+浆母细胞比例、IgE+记忆B细胞比例,过敏性疾病组均高于健康对照组［(11.53±1.22) % vs (6.02±0.52）%,(1 068±107.3)个/μL vs (578.74±58.49）个/μL ,(40.71±6.44) 个/μL vs ( 17.08±2.93)个/μL ,(8.21±1.33) % vs (1.64±0.53）%,(4.48±0.81) % vs (0.47±0.18）%。 结论：过敏儿童Th2细胞、IgE+浆母细胞和记忆B细胞比例增高,有潜力作为辅助诊断过敏性疾病的标志物。     

Candida species and other yeasts in the oral cavities of type 2 diabetic patients in Cali,Colombia

Objective:

To determine the prevalence of Candida species and to study factors associated to oral cavity colonization in patients with type 2 diabetes mellitus.

Methods:

A total of 107 diabetics were classified into controlled and uncontrolled according to glycosylated hemoglobin values. Each patient was assessed for stimulated salivary flow rates, pH, and an oral rinse to search for yeast. The study also determined the state of oral health via Klein and Palmer CPO indexes for permanent dentition, dental plaque by O''Leary, and a periodontal chart.

Results:

We found yeasts in 74.8% of the patients. A total of 36 of the 52 subjects with controlled diabetes presented yeasts and 44 in the uncontrolled; no significant differences (p = 0.2) were noted among the presence of yeasts and the control of blood glucose. The largest number of isolates corresponded to C. albicans, followed by C. parapsilosis. Uncontrolled individuals presented a significantly higher percentage of yeast different from C. albicans (p = 0.049).

Conclusions:

We found a high percentage of Candida colonization and uncontrolled individuals had greater diversity of species. The wide range of CFU/mL found both in patients with oral candidiasis, as well as in those without it did not permit distinguishing between colonization and disease. We only found association between isolation of yeasts and the low rate of salivary flow.     

Combinations of self‐reported rhinitis,conjunctivitis, and asthma predicts IgE sensitization in more than 25,000 Danes

BackgroundAllergic rhinitis (AR), allergic conjunctivitis (AC), and asthma composing multiple phenotypes and improved understanding of these phenotypes and their respective risk factors are needed.ObjectivesThe objective of this study was to define the prevalence of AR, AC, and asthma and their association with allergen‐specific immunoglobulin E (sIgE) sensitization in a large cohort of blood donors and identify risk factors.MethodsFrom the nationwide population‐based Danish Blood Donor Study, 52,976 participants completed an electronic questionnaire including AR, AC, asthma, allergic predisposition, and childhood residence. Of these, 25,257 were additionally tested for sIgE to inhalation allergens (Phadiatop).ResultsThe prevalence of sIgE sensitization, AR, AC, and asthma was 30%, 19%, 15%, and 9%, respectively. The youngest birth cohorts had the highest prevalence of sIgE sensitization and symptoms of asthma, AR, and AC, and for asthma, they apparently experienced symptoms at an earlier age. The sIgE sensitization was positively associated with male sex. The sIgE seroprevalence was higher in participants with both AR and AC (ARC) than in participants with either AR or AC. Allergic predisposition and sIgE sensitization increased the risk of the diseases, while farm upbringing was associated with reduced prevalence of ARC, however, only in sIgE sensitized participants.ConclusionBirth year, childhood residence, sIgE sensitization, and allergic predisposition were associated with asthma, AR, and AC prevalence. Individuals with self‐reported ARC represent a primarily sIgE‐positive phenotype, while those with either AR or AC represent more diverse phenotypes.     

肺炎支原体抗体和血清总IgE的检测在儿童肺炎患者中的运用价值

目的探讨儿童肺炎检测肺炎支原体抗体(MP-IgG)和血清总IgE的临床价值。方法对480例儿科住院肺炎患儿进行血清MP-IgG和总IgE检测并以MP-IgG结果分组。结果研究组各组别肺炎患儿血清总IgE阳性率和浓度与对照组比较差异均有统计学意义(P0.05),研究组各组组间血清总IgE阳性率和浓度比较,差异均有统计学意义(P0.05)。总IgE阳性率和浓度与MP-IgG滴度呈良好的正相关(R2分别为0.957 1和0.917 7)。结论血清MP-IgG和总IgE联合检测能为临床提供MP肺炎的诊断依据和相关治疗依据。