中医胃脘痛的生化多指标研究

对６２例胃脘痛患者进行多项生化指标观察，并与正常人作了比较，发现胃脘痛者胃动素、总羰基明显升高，体液免疫明显下降。经过各指标间相关分析，发现胃泌素与ＩｇＡ、ＩｇＭ呈正相关，生长抑素与ＩｇＧ呈负相关，总羰基与ＩｇＡ、ＩｇＧ与ＩｇＡ呈正相关，提示这些可能是胃脘痛的病理机理之一。     

老年人Ig,CIC和auto—Ab相互关系的研究

本文对不同年龄组健康人血清免疫球蛋白，循环免疫复合物和游离自身抗体的含量进行同步测定。结果发现，血清ＩｇＧ含量随增龄无明显改变，老年组ＩｇＡ明显高于青壮年组和老年前期组，而ＩｇＭ从４５岁便开始下降，老年人降低更为显著；老年组血清ＩｇＧ含量与ＣＩＣ－ＩｇＧ，ａｕｔｏ－Ａｂ－ＩｇＧ含量呈正相关。     

间质性肺疾病支气管肺泡灌洗液中FN和IgG的临床研究

同步检测并对比１１例正常对照者和２５例间质性肺疾病（ＩＬＤ）病人支气管肺泡灌洗液（ＢＡＬＦ）和外周血中纤维连接素（ＦＮ）和ＩｇＧ水平并探讨其意义。结果表明：（１）正常人ＢＡＬＦ和外周血中ＦＮ水平相近（Ｐ＞０．０５）；ＩＬＤ病人ＢＡＬＦ中ＦＮ水平明显增加，并高于其血浆中ＦＮ水平（Ｐ＜０．０１），而各组血浆ＦＮ水平相近（Ｐ＞０．０５）。（２）ＩＬＤ病人ＢＡＬＦ中ＩｇＧ水平明显增加，外周血中ＩｇＧ水平也略有增加。（３）ＩＬＤ病人ＢＡＬＦ中ＦＮ、ＩｇＧ均与细胞总数呈正相关，其中ＩＰＦ组ＢＡＬＦ中ＦＮ与中性粒细胞（％）呈正相关（Ｐ＜０．０５），非ＩＰＦ组ＢＡＬＦ中ＦＮ、ＩｇＧ均与淋巴细胞（％）呈正相关（ＦＮ：Ｐ＜０．０１；ＩｇＧ：Ｐ＜０．０５）。（４）ＩＬＤ病人ＢＡＬＦ中ＦＮ和ＩｇＧ之间呈明显的正相关（Ｐ＜０．０１）。以上结果提示：ＩＬＤ病人ＢＡＬＦ中ＦＮ水平明显增加，它可作为ＩＬＤ肺泡炎活动性的一个标志，而ＢＡＬＦ中ＩｇＧ水平增高可能反映ＩＬＤ体液免疫活动性的一个侧面。     

尿毒症患者出血与PAIgG的关系

作者测定了２２例尿毒症患者部分血小板功能、骨髓巨核系统状况，并同时测定（血小板抗体）ＰＡＩｇＧ，发现ＰＡＩｇＧ明显升高直接影响血小板生成及功能，可作为判定出血倾向的指标。且ＰＡＩｇＧ水平与疾病的严重程度有一定关系。     

苯那普利对原发性高血压病人体液免疫的影响

测定９３例原发性高血压病人血ＩｇＧ、ＩｇＡ、ＩｇＭ、Ｃ３、Ｃ４及ＣＩＣ，发现随着病情程度加重，ＩｇＧ逐步升高，其它指标无明显改变，苯那普利治疗后，随着血压的下降，ＩｇＧ、Ｃ３及ＣＩＣ均有不同程度下降。     

肝硬化患者血小板表面相关抗体与血小板关系的研究

本文检测了４１例正常人和３９例肝硬化失代偿患者的血小板表面相关抗体（ＰＡ－ＩｇＧ、ＰＡ－ＩｇＡ、ＰＡ－ＩｇＭ）水平和血小板计数，发现肝硬化组ＰＡ－ＩｇＧ、ＰＡ－ＩｇＡ水平与正常对照组比较有显著的增高（Ｐ＜０．０１），同时还发现肝硬化组的ＰＡ－ＩｇＧ、ＰＡ－ＩｇＡ水平与血小板计数两者呈负相关（γ分别为－０．４２４９及－０４７７２、Ｐ＜０．０５）。结果表明肝硬化患者血小板的减少与ＰＡ－ＩｇＧ、ＰＡ－ＩｇＡ增高有密切关系，这可能与肝硬化病程中自身免疫机制参与有关。     

老年人Ig、CIC和auto－Ab相互关系的研究

本文对不同年龄组健康人血清免疫球蛋白（Ｉｇ）、循环免疫复合物（ＣＩＣ）和游离自身抗体（ａｕｔｏ－Ａｂ）的含量进行同步测定。结果发现，血清ＩｇＧ含量随增龄无明显改变，老年组ＩｇＡ明显高于青壮年组和老年前期组，而ＩｇＭ从４５岁便开始下降，老年人降低更为显著；老年组血清ＩｇＧ含量与ＣＩＣ－ＩｇＧ、ａｕｔｏ－Ａｂ－ＩｇＧ含量呈明显正相关；ＣＩＣ－ＩｇＧ／血清ＩｇＧ明显高于其他年龄组，提示其体内有免疫复合物滞留。这说明，评价老年人体液免疫功能时，不仅要测定血清Ｉｇ含量，而且要测定ＣＩＣ－Ｉｇ和ａｕｔｏ－Ａｂ－Ｉｇ的含量。     

囊尾蚴病一氧化氮免疫机制的临床研究

为了研究一氧化氮（ＮＯ）在抗囊免疫机制中的作用及其与临床症状轻重的关系，本文观察了３５例皮肌型或混合型囊尾蚴病病人的囊节数目与其血清中ＮＯ水平的关系，分别用Ｇｒｉｅｅｓ法和ＥＬＩＳＡ法检测其血清中的ＮＯ水平和特异性ＩｇＧ（ＩｇＧ＃）含量，并将两组数据作相关性分析，发现该病病人的皮下囊节数目与血清中ＮＯ水平有关，病人血清中ＮＯ水平与ＩｇＧ＃含量呈正相关，病人血清中ＮＯ水平和特异性ＩｇＧ水平明显高于正常人（Ｐ＜０．０５）。由此可推测该病病人血清中ＮＯ值是反映其免疫反应强弱和临床症状轻重的一个指标，对该病的诊断和治疗具有一定的指导意义     

活血化淤法对慢性病毒性肝炎患者血清中HA,CG变化的探…

通过对慢性迁延性肝炎（ＣＰＨ）、慢性活动性肝炎（ＣＡＨ）、肝硬化ＣＡＨＣ各２０例患者血清中透明质酸（ＨＡ）、甘胆酸（ＣＧ）的变化观察发现，ＨＡ、ＣＧ随病情加重而不断增高，ＣＡＨＣ〉ＣＡＨ〉ＣＰＨ，和ＩｇＧ、γ－球蛋白的变化呈正相关，对诊断慢活肝、肝硬化及其预后在一定的临床意义。用活血化淤法治疗，对ＨＡ、ＣＧ的变化有明显好转，说明此法有明显改善肝功能、抗肝纤维化作用。     

不同病型,病期HFRS患者特异性抗体水平测定及其临床意义

用捕获ＥＬＩＳＡ方法检测了６０例（１２０份）肾综合征出血热患者（ＨＦＲＳ）血清特异性ＩｇＡ、Ｉｇ－Ｅ、ＩｇＭ、ＩｇＧ抗体。发现４种抗体几何平均滴度均随病期进展逐渐升高，且早期（发热及休克少尿期）与后期（多尿恢复期）间有差异性。ＨＦＲＳ－ＩｇＭ、ＩｇＥ、ＩｇＧ抗体水平的差异在早期（特别是发热期）尤为显著（Ｐ＜０．０５）。结果显示，ＨＦＲＳ－ＩｇＭ确属早期较可靠诊断指标；ＨＦＲＳ－ＩｇＧ、ＩｇＥ抗体水平与病情严重度相关。ＨＦＲＳ－ＩｇＡ抗体可能是一种保护性抗体。     

Evaluation of coeliac disease serological markers in Down syndrome patients

BACKGROUND: The increased incidence of coeliac disease in patients with Down syndrome makes screening of coeliac disease in this population advisable. AIM: Evaluation of efficiency of different serological markers to detect coeliac disease in Down syndrome patients. PATIENTS: A total of 56 Down syndrome patients (aged: 1-17 years) were included in study. METHODS: Patients were evaluated for both IgG and IgA anti-transglutaminase antibodies and for anti-gliadin IgA and IgG antibodies using either purified omega-gliadin, wheat ethanol extract or commercial gliadin. Patients who had at least one positive result were evaluated for antiendomysium antibodies using either monkey oesophagus or human umbilical cord by indirect immunofluorescence. Coeliac disease was diagnosed by typical histological changes on duodenal mucosa. RESULTS: Increased levels of at least one anti-gliadin IgA and IgG antibody marker were found in 27 out of 56 cases (26 for IgG and 9 for IgA). 11/56 were positive for IgG anti-transglutaminase antibodies and two of them were also positive for IgA anti-transglutaminase antibodies and anti-endomysium antibodies. These two patients were finally diagnosed as coeliacs. Gliadin antigenic fractions employed produced differences in the performance of the anti-gliadin IgA and IgG antibody test. The use of commercial gliadin or wheat ethanol extract showed low sensitivity in IgA anti-gliadin IgA and IgG antibody determination, whereas good sensitivity and specificity were observed with omega-gliadins. IgG anti-transglutaminase antibodies showed a high proportion of false positive results (9 out of 56), whereas anti-endomysium antibodies and IgA anti-transglutaminase antibodies presented an excellent correlation with presence of active coeliac disease. CONCLUSIONS: Two out of 56 Down syndrome patients were diagnosed as coeliacs, corresponding to an incidence of 3.6%. The use of omega-gliadin presented the best efficiency in anti-gliadin IgA and IgG antibody determination whereas IgA anti-transglutaminase antibodies and anti-endomysium antibody determination showed an absolute correlation with presence of active coeliac disease.     

A study of IgA.IgG titers for C. trachomatis in serum and prostatic secretion of chronic prostatitis

In order to study the correlation between chronic prostatitis and C. trachomatis, IgA and IgG titers for C. trachomatis in serum and prostatic secretion were measured using the indirect immunoperoxidase assay (Ipazyme Chlamydia). 1) Positive rate of IgA and IgG titers in serum and prostatic secretion was higher in cases of chronic prostatitis than that in cases of suspected chronic prostatitis or the normal male group. 2) In cases of chronic prostatitis, IgA titers showed a tendency to be high in prostatic secretion, and IgG titers showed the same tendency in serum. This result was considered C. trachomatis infection was appeared local immunization in prostate. 3) After treatments with DOXY for cases of positive IgA titers in prostatic secretion, IgA titers of those cases were decreased and inflammations of prostate were cured. 4) The positive rate of IgA and IgG titers in serum was higher in wives with IgA positive cases than in those with the IgA negative. Those results suggested that chronic prostatitis was correlated by C. trachomatis.     

Serum immunoglobulins and immunoglobulin G subclasses in cystic fibrosis related to the clinical state of the patient

Levels of serum immunoglobulins and immunoglobulin G subclasses were measured in 32 cystic fibrosis (CF) patients, 30 asthmatics and 27 controls. When compared with the asthmatic patients and controls, the CF patients had raised levels of all IgG subclasses as well as total IgG, IgM and IgA, but there was not a statistically significant increase in IgE. The levels of immunoglobulins in the CF patients were examined in relation to the clinical features of the disease. Raised levels of IgG4 were related to levels of IgE, but these raised levels of IgG4 appeared to be part of a general increase in total IgG and not an isolated feature. There was a significant correlation between the total IgG level and its subclasses, IgG1, IgG2, IgG3, IgG4 and IgA. IgG1 was significantly correlated with IgG2 and IgG4; IgG2 with IgG4; and IgG4 with IgE. Total IgG was the immunoglobulin most closely correlated with poor lung function. Serum IgA was higher in patients with positive immediate skin prick reactions to pollens (p less than 0.005) and death within two years of the study was related to high levels of total IgG (p less than 0.01), IgG3 (p less than 0.001), IgA (p less than 0.001), and IgE (p less than 0.005).     

Decreased level of antibodies against Helicobacter pylori in patients with rheumatoid arthritis receiving intramuscular gold.

BACKGROUND: Sodium aurothiomalate has been reported to have in vitro activity against Helicobacter pylori. Intramuscular gold, as given to patients with rheumatoid arthritis (RA), may therefore influence the colonisation of the gastric mucosa with H pylori. METHODS: Two groups were compared. One group of 42 patients was treated with intramuscular gold; the other group of 58 patients was treated with antimalarial drugs. Antibodies to H pylori (IgA and IgG) were assessed by an enzyme linked immunosorbent assay (ELISA) and total IgA and IgG were measured by nephelometry. RESULTS: IgA and IgG antibody titres against H pylori and total IgA and IgG levels were lower in the patients treated with gold than in the group treated with antimalarial drugs. The ratio of IgA antibodies to H pylori to total IgA antibodies and the ratio of IgG antibodies to H pylori to total IgG antibodies were lower in the group treated with gold. The percentage of seropositivity to H pylori was significantly lower in the group treated with gold than in the group treated with antimalarial drugs for the two IgA antibodies (35 and 55% respectively) and IgG antibodies to H pylori (40 and 65% respectively). CONCLUSIONS: Although this study cannot completely exclude the possibility that a suppressive effect of intramuscular gold on total immunoglobulin production plays a part in the decrease in the titres of IgA antibodies to H pylori and IgG antibodies to H pylori, the lower ratios of antibodies to H pylori to total immunoglobulin antibodies and the lower percentages of seropositivity to H pylori in the group treated with gold suggests that treatment with intramuscular gold decreases H pylori colonisation.     

Sero-epidemiology of toxocariasis in a rural settlement in São Paulo state, Brazil

The seroprevalence of Toxocara canis and risk factors for infection with this parasite were explored in a rural settlement in S?o Paulo state, Brazil. Total IgA and IgE levels in 79 subjects were determined by turbidimetry and chemiluminescence, respectively. Total counts of leucocytes and erythrocytes and differential counts of leucocytes were made by flow cytometry. ELISA for the detection of anti-Toxocara IgG, IgA and IgE were standardized using Toxocara excretory-secretory antigens (TES) obtained from the cultured second-stage larvae of T. canis. Seventeen (21.5%) of the subjects were found positive for anti-Toxocara IgG, with no significant differences in such seropositivity with age or gender. Thirty (38%) of the subjects showed eosinophilia and 70 (89%) had elevated levels of total IgE. Among the 17 subjects found seropositive for anti-Toxocara IgG, the percentage of leucocytes represented by eosinophils (P=0.0069) and total levels of IgE (P=0.0452) were positively correlated with the levels of anti-TES IgE. Although anti-TES IgA was detected in 10 (59%) of the subjects, there was no significant correlation between the levels of total IgA and those of Toxocara-specific IgA. Only one of the 17 subjects found positive for anti-Toxocara IgG had attended a secondary school and all but two belonged to households with monthly incomes of 相似文献   

ELISA determined IgM, IgG and IgA rheumatoid factors in rheumatoid arthritis and in other connective tissue diseases

We used an adaptation of an enzyme-linked immunoadsorbent assay (ELISA) to determine serum levels of IgM, IgG and IgA rheumatoid factors (RF) in 50 patients with classic or definite rheumatoid arthritis (RA) according to the ARA criteria, balanced for positive or negative-routine Latex-RF reaction. A control group of 50 young normal subjects and a reference group of 44 patients with other connective tissue diseases (OCTD) were also studied. We confirmed the high sensibility of the method, together with its good specificity and reproducibility. For the IgM RF a very significant correlation was found between ELISA results and Latex-RF titration (p less than 0.001). Many Latex-RF negative RA patients had high ELISA levels of IgM RF, suggesting that this assay reveals, at least in part, hidden or non-agglutinating IgM RF. Among the OCTD group only some SLE cases, mainly Latex-RF positive, had enhanced IgM RF on ELISA. Considered quantitatively, IgG RF did not play a significant diagnostic role for RA (p greater than 0.05), because they were also found, with widely dispersed values, in normal subjects, and because the mean increase in RA patients was relatively small. Interestingly, IgA RF were above the normal range in many RA patients, both Latex-RF positive or negative. The mean values differed significantly from those of controls (p less than 0.005), and a correlation was observed between IgA RF levels and IgA containing immune-complexes. Normal IgA RF values were observed in SLE patients, even if Latex-RF positive, suggesting that their increase in RA patients is not the mere expression of a polyclonal B cell activation.     

棘球蚴病患者IgG抗体阴性反应血清再检测的研究

目的　探索棘球蚴病患者抗体应答假阴性反应原因 ,以改进棘球蚴病的免疫诊断方法。　方法　采用间接ELISA和双抗体夹心ELISA方法 ,检测 42例IgG抗体阴性反应棘球蚴病患者血清的IgG亚类 (IgG1、IgG2、IgG3和IgG4 )、IgA、IgM、IgE抗体及抗原和循环免疫复合物。　 结果　 42例阴性血清中 ,32例IgG亚类或IgA、IgM、IgE抗体阳性 ,1 0例血清抗体全部阴性。其中IgG1、IgG4及IgA、IgM、IgE的检出率明显高于正常人 ,分别为 42 .9%、1 1 .9%、2 8.6 %、2 6 .2 %和 2 1 .4 %。小儿的IgM高于成人。肝棘球蚴病患者的IgG亚类高于肺棘球蚴病患者。IgG1与其它抗体联合检测 ,以IgG1 +IgA +IgM检出率最高 ,为 64 .3 %。IgG阴性患者血清的CAg和CIC阳性率分别为 2 8.57%及30 .95 %。　结论　抗棘球蚴总IgG抗体表达水平低下 ,抗体表达种类不同及循环免疫复合物的形成 ,是造成棘球蚴病患者IgG抗体反应阴性的主要原因。IgG1 +IgA +IgM检测可提高棘球蚴病患者的诊断率     

IgG, IgA, IgM antibodies to a viral citrullinated peptide in patients affected by rheumatoid arthritis, chronic arthritides and connective tissue disorders

OBJECTIVES: Anti-citrullinated protein/peptide antibodies (ACPA), a family of antibodies with overlapping specificities, represent a specific marker of rheumatoid arthritis (RA). The aim of the present study is to investigate the prevalence and clinical significance of IgG, IgA and IgM ACPA by a newly described assay employing a viral citrullinated peptide (VCP). METHODS: IgG, IgA and IgM anti-VCP antibodies have been measured in sera from 146 patients affected by RA and 404 controls, including 204 chronic arthritides, 111 connective tissue disorders and 89 healthy subjects. The affinity of the different isotypes for VCP was analysed by liquid phase inhibition assays. RESULTS: Among RA patients, 40 were single positive for IgG anti-VCP, five for IgA and 11 for IgM. Ten patients were double positive for IgG and IgA, four for IgG and IgM, six for IgA and IgM. In 15 RA patients IgG, IgA and IgM anti-VCP antibodies were detected. No correlation could be found between the isotype and the clinical manifestations or duration of the disease. IgA anti-VCP were strongly associated with RA, whereas IgM anti-VCP were detected also in a low percentage of systemic lupus erythematosus, psoriatic arthritis and mixed cryoglobulinaemia (MC) patients. IgG anti-VCP displayed a higher affinity for the antigen than IgA or IgM. CONCLUSIONS: These data show that anti-VCP of IgG and IgA isotype discriminate RA from other chronic arthritides and disease controls and suggest an independent production of each isotype.     

Identification of a new coeliac disease subgroup: antiendomysial and anti-transglutaminase antibodies of IgG class in the absence of selective IgA deficiency

OBJECTIVE: The aim of the present study was to increase the sensitivity of the antiendomysial antibody (EMA) test by evaluating also EMAs of IgG1 isotype. DESIGN AND SUBJECTS: Over the last 2 years, serum EMAs IgA and IgG1 were determined in 1399 patients, referred to our gastrointestinal unit due to clinical suspicion of malabsorption. Serum anti-tissue transglutaminase (tTG) antibodies IgA and IgG, as well as total IgA levels, were also investigated. Furthermore, EMAs IgA and IgG1 were evaluated in biopsy culture supernatants. Biopsy specimens were also admitted to histological and immunohistochemical evaluation. Twenty-six patients with gastroenterological disease other than coeliac disease (CD) were used as a disease control group. Ninety-nine blood donors were used as a healthy control group. RESULTS: Diagnosis of CD was based on histological findings in the 110/1399 patients showing EMA IgA positivity, and in a further 56/1399 patients presenting both EMA IgA and IgG1 positivity in sera as well as in culture supernatants. Of the remaining 1233 EMA IgA-negative patients, 60 showed only EMA IgG1 positivity both in sera and in culture supernatants. It is noteworthy that anti-tissue transglutaminase antibodies IgG (anti-tTG) were positive in all 60 EMA IgG1-positive patients as well. By contrast, a selective IgA deficiency was found in only 11 out of the 60 EMA IgG1-positive patients. Villous height/crypt depth ratio was < 3:1 in 38 of the 60 EMA IgG1-positive patients (63.3%), whilst overexpression of ICAM-1 and CD25 was observed in all these patients. CONCLUSIONS: In this study, we observed a group of CD patients who were EMA IgG1-positive even in the absence of EMA IgA positivity and IgA deficiency. The diagnosis was based on the finding of the gluten-dependent clinical and histological features typical of CD. Data emerging from the present investigation thus suggest that the prevalence of CD should be reassessed and that the determination of EMA IgG1 could offer a new tool in the diagnostic armamentarium of CD.     

Th1/Th2平衡关系与IgA肾病临床、病理表现的相关性分析

目的探讨辅助性T（Th）1/Th2细胞平衡与IgA肾病（IgAN）临床、肾脏病理表现的相关性。方法采用流式细胞术检测40例IgAN患者与20例健康人对照组外周血Th1、Th2值;收集IgAN患者慢性扁桃体炎史和反复发作性肉眼血尿史,血清胆固醇（Tch）、三酰甘油（TG）、IgG、IgA、内生肌酐清除率（Ccr）,24 h尿蛋白及肾脏病理表现;并了解IgAN患者以上情况与Th1/Th2比例的相关性。结果 IgAN患者外周血中Th2细胞比例为（1.77±0.90）%,较健康对照组的（1.18±0.15）%升高（P〈0.01）。慢性扁桃体炎对Th1/Th2比例无明显影响;有反复发作性肉眼血尿的IgAN患者Th1细胞比例（8.50±4.68）%及Th1/Th2值（4.10±2.01）均较无反复发作性肉眼血尿IgAN患者高（P〈0.05）,24 h尿蛋白定量大于1.0 g/d IgAN患者的Th1细胞比例（2.55±1.20）%及Th1/Th2值（1.58±0.43）均较小于1.0 g/d的患者（P〈0.01）;多元线性回归分析显示IgAN患者外周血Th1/Th2比值与血清中IgG/IgA值存在着正相关关系。结论 IgAN患者存在Th2细胞型免疫表达增强,可能与IgA肾病的免疫机制有关;反复发作性肉眼血尿及24 h尿蛋白小于1.0 g/d的IgAN患者外周血的Th细胞亚群呈Th1偏移;IgAN患者的血清中IgG/IgA值对外周血中Th1/Th2比值存在着正相关影响。