SERODIAGNOSIS OF CLONORCHIASIS BY ENZYME—LINKED IMMUNOSORBENT ASSAY WITH HRP—SPA

In thes paper the authors used the Horseradish peroxidase labelledstaphylococcal protein A(HRP—SPA)in ELISA,for the detection of Clo-norchis sinensis infection.Serum tests were made on 116 confirmed cases ofclonorchiasis,103(88.8%)of them showed positive,while only 6(4.4%)werepositive among 138 healthy people.Samples were collected on filter paperstrips,111(95.7%)cases were positive among 116 comfirmed cases tested,but only 2(1.5%)were positive out of 138 healthy persons.The resultswere similar to those obtained by sheep antihuman IgG.Animal experimentalso showed that the SPA—ELISA can be used for the diagnosis ofclonorchiasis.In an endemic area,stool egg positive rate was 8.8%(62/703).whenchecked with SPA—ELISA,the rate of conformity in both filter paperstrips and stool examinations was 90.3(56/62).Among 641 serum testsfrom individuals negative in stool examinations,only 35(5.5%)reactedpositively.The authors suggested—that SPA—ELISA with soluble Clo-norchis antigens could be used in a large scale seroepidemiological surveyin endemic areas.

Construction and Expression of Tp0453 Recombinant Protein of Treponema pallidum and Development of Indirect ELISA for Diagnosinq Syphilis

Objectives： To clone and express Tp0453 outer membrane protein of Treponema pallidum, and to evaluate its significance in the serodiagnosis of syphilis. Methods： The immuno-dominant epitope of Tp0453 gene was amplified from the complete genome of T.pallidum by polymerase chain reactions （PCR）, subcloned into the expression vector Pqe32 to generate recombinant plasmid Pqe32/Tp0453, and was then expressed in E. coli M15. The fusion protein was purified with Ni-NTA affinity purification. Indirect ELISA was developed to detect human serum IgG antibody to T. pallidum. Results： The recombinant Tp0453 protein was successfully expressed and purified. The recombinant protein had a molecular weight of approximately 32KDa.Indirect ELISA to the recombinant protein was developed.Sixty control sera were tested by ELISA and yielded a sensitivity of 100% （30/30） and a specificity of 100% （30/30）. While testing for T. pallidum in human sera, the sensitivity and specificity of ELISA were 96.8% and 100%, respectively, when compared with TPPA test results. The concordance of results between the ELISA test and the TPPA test was 98.2%. Conclusion： The recombinant Tp0453 outer membrane protein elicited a strong immunoreaction to anti-T.pallidum IgG antibody and has great potential use in ELISA for the serodiagnosis of syphilis.

探讨TRUST与TP-ELISA对梅毒患者的诊断价值

目的 探讨甲苯胺红不加热血清试验(toludine red unheated serum test, TRUST)、梅毒螺旋体-酶联免疫吸附试验(treponema pallidum-enzyme linked immunosorbent assay, TP-ELISA)检测方法在梅毒诊断中的诊断价值。方法 非随机选取2022年1月—2023年10月兴义市人民医院收治的86例疑似梅毒患者为研究对象,所有患者均完成TRUST与TP-ELISA检测,并将梅毒螺旋体明胶颗粒凝集试验(treponema palli-dum particle agglutination, TPPA)检测作为金标准,分析TRUST与TP-ELISA的诊断价值。结果 86例疑诊梅毒患者中,61例患者确诊为梅毒,患病率为70.93%(61/86)。TRUST检查的阳性率为59.30%(51/86),阴性率为40.70%(35/86);TP-ELISA检查的阳性率为67.44%(58/86),阳性率为32.56%(28/86)。TP-ELISA的敏感度为93.44%(57/61),高于TRUST检查的80.33%(49/61),差异有统计学意义(χ^(2)=4.604,P=0.032);且TP-ELISA准确度为94.19%(81/86),高于TRUST的83.72%(72/86),差异有统计学意义(χ^(2)=4.793,P=0.029)。结论 在梅毒诊断中,TP-ELISA的敏感度、准确度高于TRUST,但筛查过程仍存在假阴性风险,临床应综合考虑患者的危险因素筛查结果与其他临床指标。

Serological diagnosis of nasopharyngeal carcinoma by enzyme linked immunosorbant assay:optimization,standardization and diagnostic criteria

Objectives To produce an enzyme linked immunosorbant assay (ELISA) to detect antibodies against Epstein Barr virus (EBV) specified nuclear antigen 1 (EBNA 1) and the 18kD EBV matrix protein, and to determine and optimize its sensitivity and specificity for the diagnosis of nasopharyngeal carcinoma (NPC).Methods We used a combination of highly purified glutathione transferase fusion proteins of the 40kD carboxy domain of EBNA1 and the 18kD EBV matrix protein for coating ELISA plates. In three separate studies, we tested for IgA antibodies in serum specimens from 28 EBV seronegative donors, 284 EBV seropositive donors and 160 newly diagnosed NPC patients. By comparing the sensitivity and specificity of diagnosis obtained for different cutoff values, we derived several quantitative parameters to evaluate assay performance, establish objective diagnostic criteria which optimize the intrinsic diagnostic capability of the assay and assess the significance of individual test results, respectively. Optimum cutoff optical density (OD) is defined as the cutoff OD where sensitivity of the assay equals its specificity, and resolution of the assay is indicated by the value of sensitivity (or specificity) determined at the optimum cutoff OD. Diagnosis of NPC was achieved by setting a cutoff zone at +/-20% of this value.Results All the EBV seronegative donors tested were not reactive, and most of the EBV seropositive donors were weakly reactive, while the majority of NPC patients were moderately or strongly reactive. While the assay was thus shown to be specific for EBV, there was an overlap in the level of these serum antibodies between few individuals of the two latter groups. It was shown that the assay performed equally well in two separate studies conducted under different testing conditions and using different collections of sera in that assay resolution determined on these occasions were 86% and 87% respectively. Diagnosis of NPC can be achieved at the same expected sensitivity of 89% and 83% determined at the lower and upper limits of the cutoff zones, with the corresponding values of specificity being 78% and 91%. It was further shown in the third study that resolution of the assay can be increased to 90% using an assay produced with a higher concentration of the same antigens, and that diagnosis of NPC can be achieved at a higher sensitivity ranging between 86% and 95% at a corresponding specificity of 93% and 86%.Conclusions After optimization and standardization, the ELISA can achieve a sensitivity ranging from 86% to 95%, with corresponding specificities of 93% and 86% respectively for the diagnosis of NPC.

TP-ELISA、TRUST和TPPA联合检测在梅毒诊断中的应用

目的：探讨梅毒螺旋体抗体酶联免疫吸附试验（TP-ELISA）、梅毒甲苯胺红不加热试验（TRUST）和梅毒螺旋体抗体明胶颗粒凝集试验（TPPA）在梅毒诊断中的价值.方法：用TP-ELISA法对临床标本作梅毒筛查,对筛查出的93例阳性标本和16例样本与临界质控吸光度比值（S/CO）在0.80~0.99范围内的灰区标本进一步做TRUST和TPPA检测.结果：TP-ELISA法检出的93例梅毒阳性标本,经TPPA确证阳性83例,弱阳性6例,阳性符合率95.70%（89/93）.TP-ELISA 法检出的93例梅毒阳性标本中有32例TRUST阳性,且TPPA确证试验均为阳性;而61例TRUST阴性标本中,TPPA确证阳性51例,弱阳性6例,阴性4例.16例S/CO值在0.80~0.99之间的灰区标本,经TPPA确证1例为阳性,1例为弱阳性.结论：梅毒TP-ELISA法筛查存在一定的假阳性和假阴性.TP-ELISA阳性标本先以TRUST确证,而对于TRUST阴性标本需进一步采用TPPA确证;对S/CO值在0.80~0.99之间的灰区标本也应用TPPA确证,以减少梅毒的误诊和漏诊.

TP-ELISA一步法检测梅毒螺旋体抗体钩状现象研究

目的通过探讨钩状效应对酶联免疫吸附试验(ELISA)双抗原夹心一步法检测梅毒特异性抗体结果的影响,评价双抗原夹心ELISA一步法检测梅毒螺旋体特异性抗体的应用价值。方法采用稀释法,ELISA双抗原夹心二步法和振荡法分别检测怀疑存在钩状效应的血清标本8例;采用ELISA双抗原夹心一步法和二步法分别检测40例健康体检者血清和卫生部临床检验中心提供的梅毒抗体临床科研血清盘一套。结果8例ELISA双抗原夹心一步法检测结果为阴性,怀疑存在钩状效应的患者血清标本,采用ELISA双抗原夹心二步法进行检测时,结果均转为阳性;进行1∶2,1∶10,1∶50和1∶100倍稀释后,采用ELISA双抗原夹心一步法进行检测,分别有7例,8例,8例和5例结果转为阳性;将反应板在孵育过程中同时进行振荡,有5例转为弱阳性;ELISA双抗原夹心一步法和二步法分别检测40例健康体检者血清和卫生部临床检验中心提供的梅毒抗体临床科研血清盘,除3例弱阳性结果不符外,其它结果均一致。结论建立敏感度高的ELISA两步法或采用现有ELISA一步法试剂同时对标本进行原倍和一定倍数稀释后检测,可以既克服钩状效应,又保证检测的敏感度。

抗-TP临床检测结果分析及感染趋势评估

目的：了解广西地区梅毒螺旋体临床感染状况和感染趋势并作分析。方法：用酶联免疫吸附试验（ELISA）对患者进行梅毒抗体（抗-TP）检测,阳性者用梅毒螺旋体明胶颗粒凝集试验（TPPA）确认。结果：3年间共检测16 998份标本,抗-TP阳性率为3.91%,性病泌尿科的阳性率高达10.29%,且逐年大幅增长,其差异有统计学意义（χ2=24.843,P〈0.05）。女性的阳性率（4.99%）高于男性的阳性率（3.06%）,阳性患者峰值在（20~40）岁年之间。结论：近年该地区梅毒螺旋体感染趋势逐年递增,在预防,治疗及院内感染上应加大的力度。

Tp-19(s)-IgM-ELISA诊断早期先天梅毒

目的 通过梅毒几种检测方法的比较 ,寻找一种诊断早期先天梅毒的方法。方法 用梅毒甲苯胺红不加热血清实验 (TRUST)、梅毒螺旋体颗粒凝集实验 (TPPA)和梅毒螺旋体 19(s) IgM酶联免疫吸附法 [Tp 19(s) IgM ELISA]对 6例血清快速血浆反应素环状卡片试验 (RPR)阳性新生儿 (其母亲已在怀孕时被确诊为不同病期梅毒 )的血清进行检测。结果 6例新生儿中有 4例TRUST、TPPA、Tp 19(s) IgM阳性 ;另 2例TRUST、TPPA均阳性 ,但Tp 19(s) IgM阴性。前 4例新生儿确诊为早期先天梅毒 ,后面 2例排除早期先天梅毒。结论 特异性IgM检测应该作为早期先天梅毒确诊的实验诊断方法。

抗-TP抗体临床检测结果分析及感染趋势评估

目的：了解广西钦州地区梅毒螺旋体（TP）临床感染状况，并分析其感染趋势。方法采用酶联免疫吸附试验（ELISA）对该院2009～2012年住院及门诊患者血液标本进行抗-TP 抗体检测。结果4年间共检测19362份标本，抗-TP 抗体阳性率为6．13％，性病泌尿科的阳性率高达29．42％，且逐年增长，其差异有统计学意义（χ2＝9．738，P ＜0．05）。女性的抗-TP 抗体阳性率（7．03％）高于男性（5．47％），20～40岁组抗-TP 抗体阳性率最高。结论近年来钦州地区 TP 感染率逐年递增，应在预防宣传上加大力度，防止梅毒的进一步扩散。

TRUST、TP-ELISA和TPPA 3种方法在16375例梅毒血清学诊断中的应用

目的:了解甲苯胺红血清不需加热试验(TRUST)、梅毒螺旋体抗体酶联免疫吸附试验(TP-ELISA)、梅毒螺旋体颗粒凝集试验(TPPA)3种方法在梅毒血清学诊断中的应用价值。方法:使用TRUST与TP-ELISA法同时对住院患者12 622例、体检中心1 500例、门诊患者2 253例进行筛查,TRUST和TPPA分别作定量试验。结果:16 375例患者中筛查出384例临床确诊的梅毒,TRUST(1∶2～1∶16)、TPPA(1∶80～1∶2 560)阳性检出率分别为100%,而TP-ELISA阳性检出率为92.2%。结论:TP-ELISA不能作为梅毒筛查的首选,应用TRUST和TP-ELISA法同时筛查,TP-ELISA和TRUST测定结果为阳性的均需用TPPA确认。3种检测方法配合检测对减少梅毒漏诊或误诊,及早、准确地诊断梅毒有重要意义。

A clinical evaluation of serum concentrations of intercellular adhesion molecule-1 in patients with gastric cancer

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Development and evaluation of immunoassay for zeranol in bovine urine

A high affinity polyclonal antibody-based enzyme linked immunosorbent assay （ELISA） was developed for the quantification of zeranol in bovine urine. On the basis of urine matrix studies, the optimized dilution factors producing insignificant matrix interference were selected as 1：5 in pretreatment. In the improved ELISA, the linear response range was between 0.02 and 1 μg/ml, and the detection limit was 0.02 μg/ml for the assay. The overall recoveries and the coefficients of variation （CVs） were in the range of 82%-127% and 3.5%-8.8%, respectively. Thirty-six bovine urine samples spiked with zeranol （ranging from 0.2 to 10 μg/ml） were detected by the ELISA and liquid chromatography （LC） method, and good correlations were obtained between the two methods （R^2=0.9643）. We conclude that this improved ELISA is suitable tool for a mass zeranol screening and can be an altemative for the conventional LC method for zeranol in bovine urine.

Association of Preoperative Serum IGF-Ⅰ Concentration with Clinicopathological Parameters in Patients with Non-Small Cell Lung Cancer

Insulin-like growth factor- I （IGF- I ） is a mitogenic and anti-apoptotic factor. Serum IGF-I concentration is related to some cancer risk and tumor progression. The aim of this research was to study the association of preoperative serum IGF- I concentration with clinicopathological parameters and prognosis of non-small cell lung cancer （NSCLC）. Preoperative serum IGF- I concentration was measured in 80 consecutive patients with NSCLC who underwent radical lung cancer resection, and 45 patients with benign pulmonary lesion （BPL） by Using enzyme linked immunosorbent assay （ELISA）. The results showed that the serum IGF- I concentration was elevated and correlated with clinicopa- thological parameters and overall survival （OS） in NSCLC patients. Serum IGF- I concentration was significantly higher in patients with NSCLC tfian in those with BPL. The IGF- I concentrations were significantly higher in NSCLC patients with 〉T2, NI-3, and in IIIA-IV but not in those with 〈T2, NO, or I A- IIB. The increased serum IGF- I concentration was significantly correlated with poor prog- nosis. Our data show the positive correlation between IGF-I serum concentration and the tumor size for the first time. It seems that IGF-I related to the progression of lung cancer may depend on autocrine/paracrine function. In addition, our study reveals that higher serum IGF- I concentration is correlated with larger tumor size, advanced stages, local lymph node metastasis and worse prognosis, indicating that endocrine IGF- I is also important for the progression for NSCLC.

DETERMINATION OF SERUM SOLUBLE MACROPHAGE COLONY-STIMULATING FACTOR RECEPTOR LEVELS IN PATIENTS WITH HEMATOLOGICAL DISEASES

Objective: To investigate the serum levels of soluble macrophage colony-stimulating factor receptor (M-CSFsR) in normal subjects and patients with hematological diseases and its clinical implications in hematological diseases. Methods: The concentration of M-CSFsR was determined by ELISA. The serum M-CSFsR was identified and characterized by immunoprecipitation and Western blotting. Results: The mean serum level of M-CSFsR of 123 normal individuals was 0.48 ng/ml ± 0.41 ng/ml. Immunoprecipitation and Western blotting assay revealed a ～ 90kD band of serum M-CSFsR. The mean serum M-CSFsR level of 60 patients with acute lymphoblastic leukemia (ALL), 36 patients with acute myeloblastic leukemia (AML), 13 patients with myelodysplastic syndrome (MDS) and 42 patients with aplastic anemia (AA) .were 0.22 ng/ml±0.23 ng/ml, 0.17 ng/ml±0.16 ng/ml, 0.19 ng/ml±0.16 ng/ml and 0.23 ng/ml±0.21 ng/ml, respectively, which were significantly lower than that of normal subjects (P=0.002 ,P<0.0001,P<0.0001 andP<0.0001). The mean serum M-CSFsR level of 51 idiopathic thrombocytopenic purpura (ITP) patients was significantly higher than that of normal subjects (2.05 ng/ml±2.75 ng/ml,P<0.0001). Conclusion: The serum M-CSFsR levels of patients with ALL, AML, MDS and AA were significantly lower, while the level of patients with ITP was significantly higher than that of normal individuals. Patients with severe ITP (platelet count<30×l09/L) had the highest M-CSFsR level. It suggested that the abnormal levels of serum M-CSFsR may associate with some hematological diseases and may contribute to the pathological process.

Levels of soluble delta-like ligand 1 in the serum and cerebrospinal fluid of tuberculous meningitis patients

In this study, the levels of soluble delta-like ligand 1 in cerebmspinal fluid and serum of 50 patients with tuberculous meningitis, 30 patients with viral meningitis, 20 patients with purulent meningitis and 40 subjects without central nervous system disease were determined using an enzyme-linked immunosorbent assay. The mean levels of soluble delta-like ligand 1 in both cerebrospinal fluid and serum from patients with tuberculous meningitis were significantly higher compared with those from patients with viral meningitis or purulent meningitis or from subjects without central nervous system disease. Meanwhile, the level of soluble delta-like ligand 1 gradually decreased as tuberculous meningitis patients recovered. If patients deteriorated after treatment, the level of soluble delta-like ligand 1 in cerebrospinal fluid gradually increased. There was no correlation between the level of soluble delta-like ligand 1 and the protein level/cell number in cerebrospinal fluid. Our findings indicate that the levels of soluble delta-like ligand 1 in cerebrospinal fluid and serum are reliable markers for the diagnosis of tuberculous meningitis and for monitoring treatment progress. At the same time, this index is not influenced by protein levels or cell numbers in cerebrospinal fluid.

Development of PPA-ELISA for Detecting Antibodies against Porcine Pseudorabies Virus Using Truncated Recombinant Glycoprotein gD Expressed in E.coli

The purpose of this study was to develop a method for detecting antibodies against porcine pseudorabies virus （PRV）. According to the published genomic sequence of PRV SA strain, an approximately 1 070-bp gD gene fragment was amplified by PCR. The PCR products were cloned into the prokaryotic expression vector pET30a and the positive recombinant plasmid was transformed into E. coli BL21. Through induction with IPTG, the recombinant gD protein was expressed as inclusion bodies. As analyzed by western blot assay, the purified recombinant gD protein had good antigenicity and high specificity. Using the purified gD protein as coating antigen and horseradish peroxidase labeled staphylococcal protein A （PPA） as secondary antibody, we developed a PPA-ELISA for detecting antibodies against porcine PPV. No cross-reaction with the positive sera against seven common pathogens in pigs including classical swine fever virus, porcine parvovirus, porcine reproductive and respiratory syndrome, Japanese encephalitis virus, porcine circovirus type 2, porcine epidemic diarrhea virus, transmissible gastroenteritis virus was observed. The repeatability test showed that the intra- and inter-assay coefficients of variation were lower than 5% and 10%, respectively. Compared with the ELISA gD antibody test kit produced by IDEXX, the coincidence, sensitivity and specificity of the developed PPA-ELISA were 92.0%, 95.1% and 88.1%, respectively. The developed PPA-ELISA had good repeatability, sensitivity and specificity and was a rapid and simple serological method for surveillance of PRV antibodies in pig herds as well as for rapid diagnosis and epidemiological investigation of PRV infection.

人输注静注人免疫球蛋白后对TP-ELISA法检测梅毒的干扰因素初探

目的初步探讨当静注人免疫球蛋白(p H=4)注入人体后对梅毒螺旋体酶联免疫吸附试验(TP-ELISA)检测结果的干扰。方法采用氢氧化钠调节静注人免疫球蛋白p H值;用0.9%氯化钠注射液和阴性血浆(经梅毒检测阴性的健康献浆员新鲜混合血浆)稀释静注人免疫球蛋白成不同浓度后,进行PAEG电泳和TPELISA。结果稀释后静注人免疫球蛋白的分子结构无明显差异;静注人免疫球蛋白浓度为5%,p H值7.0左右时梅毒显阳性、p H值4.0左右时梅毒显阴性;随着稀释倍数增加,蛋白浓度和p H值均有改变,梅毒结果先显阳性后转为阴性。结论静注人免疫球蛋白样品的p H值对TP-ELISA检测梅毒的结果有明显的干扰作用,静注人免疫球蛋白浓度是主要干扰因素。

A NEW QUANTITATIVE DETECTION METHOD OF RECOMBINANT CFP10-ESAT6 AMALGAMATION PROTEINS FROM MYCOBACTERIUM TUBERCULOSIS BASED ON MICRO-MAGNETIC PROBES STRATEGY

A new rapid,specific and sensitive method for assay of recombinant CFP10-ESAT6 amalgamation proteins from Mycobacterium tuberculosis was proposed.The method used streptavidincoated magnetic beads to enrich the specific biotinylated anti-CFP10 antibody,then adopted a sandwich-type enzyme linked immunosorbent assay technology with two kinds of monoclonal antibodies:biotinylated anti-CFP10 antibody and HRP-labeled anti-CFP10 antibody to identify the target CFP10-ESAT6 proteins,and finally detected chemiluminescence intensity by a small home-made optical sensor.It was shown that,the corresponding chemiluminescence intensity had a good logarithmic linear response to the concentration of CFP10-ESAT6 proteins when ranging at 1~1000 ng/mL,and the correlation coefficient is 0.9937.The proposed method could detect the CFP10-ESAT6 proteins with low detection limit(1 ng/mL)and the detection time could be controlled within 45 min.Compared with commonly used detection methods of M.tuberculosis,this method was easy to operate,faster,and of higher sensitivity.The achievement of the quantitative detection of CFP10-ESAT6 proteins has important scientific significance and wide application prospects in tuberculosis control.

Study on the serum levels of soluble intercellular adhesion molecule-1 (sICAM-1) in patients with Helicobacter pylori Infection

Objective: To evaluate the interaction between serum levels of soluble intercellular adhesion molecule 1 (sICAM 1) and Helicobacter pylori (H. pylori) infection in patients with chronic gastritis and peptic ulcer. Methods: The serum levels of sICAM 1 in 205 patients with chronic gastric diseases were detected by ELISA method and the status of H. pylori was determined by histologic examination, RUT, 14 C UBT, and serology. The sera obtained from 18 healthy volunteers served as controls. Results: The serum levels of sICAM 1 were significantly higher in patients with H. pylori positive than those of H. pylori negative (889.43±32.52 ng/ml vs. 747.07±30.45 ng/ml, P <0.05). The serum levels of sICAM 1 in patients with mild, moderate and severe infection of H. pylori were 841.68±72.36 ng/ml, 905.43±37.59 ng/ml and 1012.54±49.34 ng/ml,respectively ( P <0.05). The serum levels of sICAM 1 proved to be significantly correlated with the density of H. pylori colonization in gastric mucosa ( r s =0.316, P < 0.001) . The serum levels of sICAM 1 in patients with chronic gastritis and peptic ulcer were significantly higher than those in healthy controls ( P <0.05). Conclusions: These results indicated that H. pylori infection up regulates the expression of sICAM 1.

Therapeutic Mechanism of Santeng Dingtong Recipe (三藤定痛方) on Monosodium Urate Crystal-Induced Rabbit Arthritis

Objective: To study the therapeutic mechanism of Santeng Dingtong recipe (STDT) on monosodium urate crystal (MSU) induced rabbit arthritis Methods: Forty-two rabbits were randomly divided into six groups, 7 in each group. Group 1 received 0.9% saline 2. 5 ml/kg per day by gastrogavage (ig) for 10 days; Group 2, 3 and 4 received STDT 0.125 g/kg, 1.0 g/kg and 8.0 g/kg per day respectively by ig for 10 days; Group 5 received colchicine 4. 5 mg/kg per day by ig for 4 days; and Group 6 was untreated. MSU crystals 10 mg /500ul containing polymyxin B 10 u/ml was injected into the knee joints of Group 1-5 to make rabbit arthritis models. Leukocytes in synovial lavage fluids was then counted and differentiated; pathological injury of synovial membranes was observed under HE staining; interleukin-1 beta (IL-1B), tumor necrosis factor alpha (TNFa) and leukotriene B4 (LTB4) content in synovial lavage fluids were determined by ELISA. Results: MSU caused a rapid leukocyte infiltration and increased production of IL-1B, TNFa and LTB4 2 hrs after intra-articular injection. STDT inhibited neutrophil infiltration in synovial fluids dose-dependently, protected the synovial membrane against pathological injury and reduced the production of IL-1B, TNFa and LTB4; while colchicine did not decrease the level of TNFa, but significantly inhibited neutrophil infiltration in synovial fluid and reduced the production of IL-11B and LTB4. Conclusion: STDT exerts an anti-inflammatory effect in rabbit model of acute MSU arthritis, its mechanism being probably due to the decrease of XL-1B, TNFa and LTB4 synthesis.