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Objective To identify the potential long non-coding RNA (lncRNA) expressed in rheumatoid arthritis (RA) synovium key to RA onset and investigate its association with immune cell infiltration. Methods RA synovium data were downloaded from the GEO database and normalized. The lncRNAs key to RA onset were identified using multiple machine learning methods. Infiltration of 22 immune cell populations in RA synovium was measured by cell-type identification by estimating relative subsets of RNA transcripts (CIBER-SORT). The relationship between the key lncRNA and infiltrating immune cells was analyzed. Finally, real-time quantitative PCR was applied to validate the expression of the key lncRNA in RA synovial cells. Results lncRNA human leukocyte antigen complex P5(HCP5) was identified as the key lncRNA associated with RA onset. Infiltration analysis revealed increased abundance of CD8+ T cells, γδ T cells, and M1 macrophages while decreased abundance of M2 macrophages in RA synovial tissue. Correlation analysis demonstrated that the lncRNA HCP5 expression was positively associated with the infiltration abundance of CD8+ T cells, γδ T cells, and M1 macrophages in RA synovial tissue. Furthermore,the expression of lncRNA HCP5 in RA synovial cells was up-regulated. Conclusion lncRNA HCP5 expression is up-regulated in RA synovial tissue and potentially associated with immune cells infiltration.
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Humans , Arthritis, Rheumatoid , CD8-Positive T-Lymphocytes , HLA Antigens/metabolism , RNA, Long Noncoding/metabolism , Synovial Membrane/metabolismABSTRACT
Objective:To identify the key genes related to rheumatoid arthritis (RA) by to the weighted gene co-expression network analysis (WGCNA) and experimental verification to find key genes related to RA.Methods:The microarray data of RA were downloaded from the Gene Expression Omnibus (GEO) database. Gene network was constructed, and the genes were classified into different modules using WGCNA. HUB genes in modules related to RA clinical symptoms were analyzed by gene ontology. Subsequently, different data sets of GEO were used to verify the expression profile and diagnostic capacity of the HUB gene [receiver operating characteristic curve (ROC)]. In addition, the expression of HUB gene in RA was verified by real time polymerase chain reaction (RT-PCR) and Western blot, and the relationship between key genes and disease activity score 28 joints (DAS28) was analyzed. Paired-sample t-test and Pearson's correlation analysis was used for statistical analysis. Results:A total of 5 413 differentially expressed genes were filtered. Weighted gene coexpression network was constructed and genes were classified into 23 modules. Among them, the black module is closely related to the clinical symptoms of RA, which contained 346 genes. Enrichment analysis and Kyoto encyclopedia of genes and genomes (KEGG) signal pathway analysis showed that it was to be enriched in the positive regulation of interleukin 6, interleukin 1 beta secretion, osteoclast differentiation, NOD-like receptor signaling pathway, T helper cell 17 (Th17) cell differentiation and many other pathways closely related to RA. Motile sperm domain-containing protein 2 (MOSPD2) was significantly correlated with clinical symptoms. It was highly expressed in blood monocytes and bone marrow monocytes ( t=2.238, P=0.032; t=3.153, P=0.006), and positively correlated with blood expression in RA joint synovial fluid ( r=0.683, P=0.03). ROC curve analysis determined that MOSPD2 could distinguish RA from the control group (the area under the curve was 0.855 and 0.726) respectively. RT-PCR and Western blotting results showed that MOSPD2 was up-regulated in RA patients ( t=-3.96, P=0.02). MOSPD2 expression levels in blood were positively correlated with DAS28 in RA patients ( r=0.884 6, P=0.046 2). Conclusion:MOSDP2 is closely related to the clinical symptoms of RA patients, and may be one of the targets for the diagnosis and treatment of RA.
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Objective:To study the patterns of tocilizumab (TCZ) use, its efficacy and safety in patients with rheumatoid arthritis (RA) in routine clinical practice.Methods:A total of 407 patients with RA were enrolled from 23 centers and treated with TCZ within 8 weeks prior to the enrollment visit, and were followed for 6-month. The patterns of TCZ treatment at 6 months, the effectiveness and safety outcomes were recorded. Statistical analysis was performed using SAS version 9.4.Results:A total of 396 patients were included for analysis, in which 330 (83.3%) patients received TCZ combined with conventional synthetic disease-modifying antirheumatic drugs (csDMARDs), and 16.7%(66/396) received TCZ monotherapy. At baseline, TCZ was initiated in 56.6%(224/396) and 9.6%(38/396) of patients after failure of DMARDs and other biological agents (bDMARDs) respectively. During the 6-month follow-up period, the mean frequency of TCZ administration was (3.7±1.6), the mean TCZ dosage was (7.4±1.2) mg/kg, and the mean interval between doses was (40±13) days. 120(25.8%) patients were on TCZ treatment at the end of the study. Improvements in disease activity, systemic symptoms and patient report outcomes were observed at the end of the study. 22.7%(90/396) patients experienced at least one treatment related adverse event, and 8 patients experienced at least one serious adverse event.Conclusion:This study demonstrates that TCZ treatment is effective in patients with RA when being treated for 6 months with an acceptable safety profile. The duration of TCZ treatment needs to be extended.
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Objective To analyze systematically the existing classification criteria and assessment tools for osteoarthritis (OA).Methods Comprehensively searched and screened the available classification criteria and assessment tools reported in OA guidelines,textbooks,including secondary and original researchs.We collected and summarized the extracted data with the methods of scoping review and also used Excel software for qualitative analysis.Results A total of 63 OA guidelines,1 textbook,239 secondary or original researches,160 supplementary records were retrieved.The 5 classification criteria and 15 systematic reviews of assessment tools (855 assessment tools) were finally included.Conclusion The existing classification criteria lack a rigorous and transparent development process,and they are also too complicate to guide clinical treatment.We suggest that the development and improvement of OA classification criteria should be linked with the streamlined assessment tools,and conduct trials to test in clinical practice.
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Objective To investigate the clinical application value of fluorescence polymerase chain reaction (PCR) .in the human leucocyte antigen-B27(HLA-B27) gene and gene typing detection of ankylosing spondy-litis (AS) patients .Methods A total of 43 clinical blood samples of AS and 56 samples of healthy controls were collected in Shenzhen Futian hospital for rheumatic diseases from January 2014 to March 2015 .HLA-B27 gene was detected by flow cytometry .HLA-B27 gene and gene typing was also detected by the fluorescence PCR method .Results Among 43 samples ,40 samples were HLA-B27 positive(93 .02%) by flow cytometry while 39 samples were HLA-B27 positive (90 .70%) by fluorescence PCR .The total coincidence rate was 97 .50% .Among 39 positive samples ,32 samples were HLA-B2704 positive (82 .05%) and 7 samples were HLA-B2705 positive (17 .95%) .Conclusion The fluorescence PCR is an accurate method to detect HLA-B27 gene and presents high consistency with flow cytometry .It can also detect the HLA-B27 gene typing .It may have great clinical application value and prospects .
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Objective To investigate the expression of miRNA-16 in peripheral blood monouclear cells (PBMC)from systemic lupus erythematosus( SLE)patients. Methods Sixteen SLE patients who meet the diagnostic criteria of SLE revised in 1997 American rheumatology and 12 healthy individuals were selected as our subjects. Their peripheral blood were sampled. Total RNAs were extracted and purified. The level of miRNA-16 was determined by quantitative reverse transcription PCR( qRT-PCR). U6 was used as housekeeping control. The amount of target miRNA was normalized relative to the amount of U6(ΔCt =ΔCt miRNA-ΔCtU6 ). Relative expression levels were expressed as 2-ΔCt . Results The expression level of miRNA-16 in the SLE patients was 919. 87 ± 715. 45,significantly higher than that in the healthy control group(413. 6 3 ± 330. 69;t= -2. 497,P﹤0. 05). And miRNA-16 expression in SLE active group was 1 298. 79 ± 803. 79,significantly higher than that in SLE stable group(540. 95 ± 350. 15;t= -2. 445,P﹤0. 05). The level of miRNA-16 was related with AnuA (r=0. 669,P=0. 005),ESR(r=0. 608,P=0. 012)and SLEDAI(r=0. 530,P=0. 035). Conclusion The expression of miRNA-16 is high in SLE patients and it is related with SLE activity.
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Objective To elucidate the function way of micro RNA(miR)-155 in the differentiation of Th17 cells.Methods CD4+T cells were separated from mice spleens using MACS CD4+T cells separatinge kit and cultured with interleukins [interleukin (IL)-2, IL-23 and IL-6] which could induce CD4+ T cells differentiate into Th17 cells.IL-17 was detected by flow cytometry and enzyme linked immunosorbent assay (ELISA) after transfected with miR-155 mimics or inhibitor lentiviral vectors.The expression levels of miR-155, IL-17A mRNA and Ets-1 mRNA were detected using fluorescent quantitation real-time quantitative polymerase chain reaction (RT-PCR).The si-Ets and miR-155 co-function for Th17 differentiation was analyzed.Data analysis was perfoemed using one-way analysis of variance (ANOVA) test and Dunnett test for pair-wise comparison and t test.P＜0.05 was considered to be statistically significant.Results The CD4+T cells were divided into four groups (the untreated control untreat group, the treatment control treat group, the miR-155 mimnics group and miR-155 inhibitor group).IL-17 was scarcely expressed and secreted in the untreated control untreat group.The cells expression of IL-17 were significantly different among the four groups (F=160.549, P＜0.01).The cells expressing of IL-17 were higher in the miR-155 mimics group (39.86±4.62)％ than those at the miR-155 inhibitor group (22.02±2.81)％, P＜0.01) and in the treated control treat group [(19.44±1.49)％, P＜0.01].The level of IL-17 was also significantly different among the four groups (F=260.813, P＜0.01).The level of IL-17 was higher in the miR-155 mimics group [(1 509±136) pg/ml] than that in the miR-155 inhibitor group [(923± 42) pg/ml, P＜0.01);and in the treated control group [(767±94) pg/ml, P＜0.01).The expression of miR-155 (12.53±0.80 vs 1.78±0.14, 7.16±0.62, 6.47±0.92, P＜0.01) and IL-17A mRNA (46.55±6.71 vs 1.01±0.19,15.62±1.26, 14.20±2.73, P＜0.01) was significantly higher than that in the other three groups, while the expression of Ets-1 mRNA was significantly lower (0.66±0.10 vs 1.19±0.04, 1.01±0.16, 1.37±0.27, P＜0.01).si-Ets-2 was screened because it markedly inhibited the expression of Ets-1 mRNA among the three designed siRNAs.The expression of IL-17A mRNA was higher (17.19±3.58 vs 10.08±0.76, t=-3.361, P=0.028) and the expression of Ets-1 mRNA was lower (0.27±0.01 vs 0.74±0.03, t=-30.275, P＜0.01) in si-Ets-2 group than that in si-Con group when si-Ets-2 or si-Con was co-transfected with miR-155 mimics or inhibitor lentiviral vectors.The expression of Ets-1 protein was lower in si-Ets-2 group than that in si-Con group by Western blotting and the decrease was markedly obvious in the miR-155 mimics group.Conclusion miR-155 can induce CD4+T cells to differentiate into Th17 cells by inhibiting the gene expression of Ets-1.
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Objective To investigate the distribution of traditional Chinese medical syndrome patterns of dengue fever, thus to standardize its clinical diagnosis and treatment and to enhance its therapeutic effect. Methods A prospective clinical trial was carried out in 210 dengue fever patients who were admitted from July to October of 2014. The clinical data of four physical examinations were collected and analyzed for the analysis of the distribution of syndrome patterns. Results ( 1) The traditional Chinese medical syndromes of 210 dengue fever patients were characterized by fever and aversion to cold, heaviness of limbs, poor appetite, headache and heaviness of head, abdominal fullness and discomfort, yellowish urine, yellowish and greasy fur, sluggish pulse. ( 2) The syndrome patterns of dengue fever were classified into blockage of damp-heat, disease involving both defensive phase and qi phase, heat attacking qi phase, heat attacking blood phase, toxicity invading pericardium, and sudden loss of yang-qi. The incidence of six patterns was in decreasing sequencing. ( 2) The results of laboratory examination showed that the decrease of white blood cell ( WBC) , neutrophil percentage and platelet count was obvious, and the haematocrit ( PLT) became disordered. The results of recheck showed taht the increase of calcitonin and C-reactive protein were not obvious, and the damage of vital organs was less. Conclusion Dengue fever can be classified into the damp-heat pestilence in traditional Chinese medical field. The syndrome patterns of dengue fever are dominated by blockage of damp-heat, and disease involving both defensive phase and qi phase, and correspondingly, the therapeutic methods should be focused on clearing heat, resolving dampness, and strengthening spleen.
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Objective To verify the presence of anti-ovary antibodies in systemic lupus erythematosus (SLE) and its possible correlations with serum levels of hormone profile and menstrual disturbances in patients with SLE.Methods Clinical data of 78 consecutive paticnts who fulfilled 4 or more of the ACR 1997 revised criteria for SLE were studied and compared with 40 age-matched healthy controls,including anti-ovary antibodies.Results 27 (34.6％ ) patients with SLE,and 1 (2.5％) of the healthy controls tested positive of anti-ovary antibodies.The levels of E2 and T and P decreased[ E2:( 80.96 ± 36.2 ) ng/L vs ( 118.53 ± 42.4 ) ng/L; T:( 3.85 ± 1.18 ) nmol/L vs ( 6.43 ± 2.28 ) nmol/L; P:( 1.37 ± 0.59 ) μg/L vs ( 3.92 ± 1.23 ) μg/L],and the levels of FSH and LH and PRL increased in SLE patients when compared with healthy controls [ FSH:( 19.17 ± 9.26)IU/L vs (10.18 ±7.27 )IU/L; LH:( 21.19 ± 12.44)IU/L vs (13.79 ±8.27)IU/L;PRL:(6.18 ± 2.27 ) μg/L vs (2.37 ±0.63)μg/L,P ＜0.05 orP ＜0.01].The higher SLEDAI score,higher rate of menstrual disturbances (6.3 ±2.8 vs 3.5 ± 1.7,81％ vs 47％,P ＜0.05 or P ＜ 0.01 ) and decreased serum level of E2 [ (64.13 ± 26.36 ) ng/L vs ( 82.83 ± 28.71 ) ng/L,P ＜ 0.05 ]were found in SLE patients with anti-ovary antibodies positive than in SLE patients with anti-ovary antibodies negative.Conclusions The presence of anti-ovary antibodies was 34.6％ in SLE,and may correlate to decreased serum level of E2 and menstrual disturbance.
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ObjectiveTo investigate the expression of miR-155 and miR-146a in peripheral blood mononuclear cells (PBMC) and plasma of rheumatoid arthritis (RA) patients.MethodsPBMC and plasma were separated from the peripheral blood of 34 RA patients and 15 healthy individuals.Total RNAs were isolated and miRNAs were purified.The levels of miR-155 and miR-146a were determined by quantitative reverse transcription PCR(qRT-PCR).U6 was used as housekeeping control.The amount of target miRNA was normalized relative to the amount of U6(ΔCt=ΔCtmiRNA-ΔCtU6).Relative expression levels were expressed as 2 △-ΔCt.Data were analyzed using SPSS 13.0 software.The test of homogeneity of variance and unpaired t-test was used to compare between groups.P values(2-tailed) less than 0.05 were considered as statistically significant.ResultsThe expressions of PBMC and plasma miR-155 were higher in RA patients than those in the healthy control individuals(0.08±0.08 vs 0.05±0.03,t=-2.225,P＜0.05; 5.9±6.7 vs 1.3±2.0,t=-3.677,P＜0.05).The expression of miR-146a in PBMC and plasma of RA patients and controls were(1.3±1.2 vs 0.8±0.6,t=-2.154,P＜0.05)and(741±1001 vs 300±295,t=-1.669,P＞0.05).According to their DAS28 value,RA patients were divided into high activity group (23 cases,DAS28≥5.0) and low disease activity group( 11cases,DAS28＜5.0).The plasma miR-155 and miR-146a expressions were significantly higher in high activity group than those in low activity group.There were no significant differences in the expression of PBMC miR-155 and miR-146a between the two groups.ConclusionThe expression of PBMC and plasma miR-155 and miR-146a are higher in RA patients.The expression of plasma miR-155 and miR-146a are associated with RA patients' activity.Plasma miR-155 and miR-146a may be potential non-invasive biomarkers for RA diagnosis anddisease activity assessment.
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BACKGROUND:Previous studies have documented that,the increase of anti-cardiolipin(aCL) antibody titer has an obvious positive relaltionship with the vascular thrombosis,thrombocytopenia and repeated abortion in the patients with systemic lupus erythematosus and antiphospholipid syndrome,but there is little information on the aCL antibodies in lupus nephritis(LN).OBJECTIVE:To ascertain the preyalence and significance of aCL antibodies in Chinese patients with LN.DESIGN:Prospective follow-up study of one sample.SETTING:Department of Rheumatology in Xiangmihu Branch of Shenzhen Fourth People's Hospital,Shenzhen Institute of Rheumatology in Guangdong Medical College.PARTlCIPANTS:The study was performed in 97 LN Patients consecutively recruited in the Department of Rheumatology in Xiangmihu Branch of Shenzhen Fourth People's Hospital between March 2001 and October 2003.All the included patients met the revised criteria of American College of Rheumatology for the diagnosis and classification of LN.And they all knew the fact saying yes.METHODS:The clinical data and auxiliary examination result were recorded when hospitalizalion.The aCL antibodies were measured by the enzyme-linked immunosorbent assay,and Were considered as positive if over 100 U/mL.High-dose oral administration of prednisonc combined with cyclophosphamide intravenous pulse therapy were applied for inducing release.The curative effect was remained by using azathioprine and prednisone at a decreasing dose.Meanwhile the complications such as hypertension,hyperlipemia and arthralgia were prevented by drugs.All the patients had routine visits at six-month intervals for a total of 3 years,Clinical and seroIogic manifestations of Patients with LN were tested and recorded regularly.MAIN OUTCOME MEASURES:Gender,age,systemic lupus erythematosus disease activity index,clinical manifestations,vascular thrombosis,pregnancy outcome and renal function.RESULTS:All the 97 LN Patients were included in the study.and 83 of them entered the result analysis while the other 14 cases were lost.The overall prevalence of aCL antibodies in 97 subjects was 39%(38 cases).Hypertension,thrombocytopenia and Raynaud's phenomenon were more frequent in LN Patients with aCL antibodies.The aCL IgG antibody-positive Patients showed a greater risk for the occurrence of vascular thrombosis;Pregnancy morbidity of miscarriages,premature birth,fetal death and the probabmty of developing irreversible renal function deterioration occurred at a greater frequency in aCL antibody-positive patients.CoNCLUSIoN:The prevalence of aCL antibodies in LN Patients is 39%.A higher incidence of hypertension.thrombocytopenia and Raynaud's phenomenon is found in patients with aCL antibodies.Detection of aCL antibodies in Patients with LN may be usefol to predict the development of vascular thrombosis,pregnancy morbidity and irreversible chronic renal function deterioration.
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In this paper, we designed to investigate the frequencies of tumor necrosis factor receptor 2 (TNFR2) polymorphisms at nt587 and nt694 in south Chinese SLE patients and healthy individuals and explore whether genetic variants in TNFR2 gene is involved in the pathogenesis of SLE. The results showed that the nt587G allele frequency was 21.1% in the 128 SLE patients and the allele frequency was 13.0% in the 135 healthy individuals, the former was significantly higher than the latter in the allele frequency (P ＜ 0.05). People with the nt587 G variant showed high risk to SLE. The frequency of nt694 was slightly but not statistically significantly increased in SLE patients compared with healthy controls(16.0% versus 11.9%, P= 0.149). These results indicate that the polymorphism at nt587 of TNFR2 is associated with the south Chinese SLE patients. The polymorphism at nt694 is not associated with SLE.
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BACKGROUND: The data of epidemiological survey on rheumatic diseases such as ankylosing spondylitis (AS) are very rare in China, especially in Shenzhen. The comprehensive understanding of epidemiological situation of AS in Shenzhen can be used to draw up treatment plans by Shenzhen Health Bureau and some other health organizations.OBJECTIVE: To investigate the epidemiological features of AS.DESIGN: Randomized complete collection and cross-sectional investigation.SETTING: Shenzhen Rheumatism Institute of Guangdong Medical College. PARTICIPANTS: From December 2001 to April 2004, totally 6 684 adults aged over 16 years were selected from three regions (one region of river and lakes, one local mountain region and one inhabitant region) of Shenzhen. Among them, 5 922 adults (2 659 males and 3 263 female) were actually investigated and the investigative rate was 88.6%. Males were accounted for 44.9% and females were 55.1%, and the ratio was 1:1.23.METHODS: Step 1 and 2, the investigated individuals were questioned and their answers were recorded by the investigators. The questionnaire proceeded one by one for every individual and proceeded at homes. Step 3,the individuals with positive findings at steps 1 and 2 were examined by rheumatologic doctors. Step 4, individuals with suspected AS were subjected to human leukocyte antigen B27 (HLA-B27) assays, radiographies including plain pelvic films, plain lumbar-vertebral films and if necessary, radiographies at other areas of spinal column as well as peripheral joints.MAIN OUTCOME MEASURES: Frequencies of rheumatic complaints,prevalence rate of AS, positive frequencies of hum an HLA-B27, and comparisons with relevant data abroad.RESULTS: ① General frequency of rheumatism was 21.6%, and the highest complaint was at knee joint, then at waist, shoulder, neck and hand. In female, the frequencies of complaints at every joint mentioned above were higher than those in male (P ＜ 0.05). A total of 13 patients (4.7%) had to discontinue their work because of rheumatic diseases. ②Prevalence rate of AS was accounted for 0.37%, and the ratio between male and female was 4.5: 1. The onset of AS began at middle age in majority patients. ③ Positive frequency of HLA-B27 was 5.0%. ④ Rate of misdiagnosis, the rate of early diagnosis and the rate of long-term irrational drug-usage were 64%, 27% and 73%, respectively.CONCLUSION: In Shenzhen, the prevalence rate of AS (0.37%) is ranked higher than that in Beijing (0.26%), Shantou (0.26%), America(0.20%) and the whites of Greece (0.24%). The differences among them may be connected with the fact that in Shenzhen the young people occupy a large proportion of population.
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OBJECTIVE:To study and evaluate the efficacy and safety of homemade sterilized powder for injection of rifampicin(weifunin) in the treatment of pulmonary tuberculosis(PT) and to compared with same import preparation . METHODS:Divide the 121 of bacteriological positive PT patients in the proportion of 1 to 1 with computer automatically into the trial group and the control group used with homemade rifampicin (weifuxin) and import rifampicin(nifu)respectively,the others regimens was same in 2 groups,to evaluate the sputum culture negative conversion rates,X-ray results and adverse drug event etc.after treatment 1 and 2 months . RESULTS: 116 cases were finished ,at the end of 2 month the sputum smear negative conversion rates were 86.21 % and 91.38% (X2=0.780,P=0.377), the sputum culture negative conversion rates were 91.38% and 93.10%(X2=0.120,P=0.729)in the trial group and the control group respectively .The X-ray remarkable effective rates of 2 groups were 82.76% amd 70.69%(X2=2.365,P=0.124)respectively, and the effective rates of the 2 groups were both be 96.55% .The adverse drug event rates were 8.20% and 11.67% respectively, there was on sighificant difference in each indexes .CONCLUSIONS:2 preparation were similar in efficacy ,safety and tolerance.
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Objective:To investigate the expression of CD69+ on lymphocyte and cytokine in active lymphocyte (CD69+) from patients with systemic lupus erythematosus( SUE) . So try to understand the lymphocyte activation, expression of cytokine in active lymphocyte and the pathogenesis of SLE.Methods: Expression of CD69+ on lymphocyte and intracellular cytokine(IL-2,TNF?) in active lymphoycte(CD69+) were investigated in 26 SLE and 15 healthy volunteers by using flow cytometric analysis and immunofluorescence staining method. Results:Expression of CD69+ on lymphocytes from active and inactive SLE patients were significantly higher than that of healthy controls( P
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Objective To evaluate the therapeutic effects and side effects of MMF on severe SLE patients compared with CTX.Method All 106 severe SLE patients were randomly allocated to 2 groups:MMF treatment group (53 patients):1 5 g/d for 3 months,1 0 g/d for following 3 months,and then 0 5～0 75 g/d;IVCTX treatment group:0 75 g/m 2 per month for 6～12 months.Prednisone was used in all patients.Clinical and laboratory parameters including SLE DAI,Hb,platelet,urine protein,albumin,SCr,aCL,ANA and anti dsDNA were observed.Results After 3 month treatment,all clinical and laboratory parameters were significantly improved in MMF group,while only partial parameters were improved in CTX group.Hb and platelet increased and urine protein and anti dsDNA decreased faster in MMF group than in CTX group.At month 6 the clinical and laboratory parameters improved significantly in both groups ( P
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Objective:To investigate functional of DNAM 1 antigen in T cell subsets activation process from patients with SLE and determine whether they are correlated with the pathogenesis of SLE.Methods:The peripheral blood monouclear cells from 31 SLE and 30 healthy volunteers were stimulated with PHA.Those cells were quantified using flow cytometric analysis with three colour immunofluorescent staining method.The levels of anti dsDNA,complement C 3 and C 4 were measured as well as.Results:The percentages of DNAM 1 positive from SLE on CD + 4 and CD + 8 T cells were increased,compared with that of the controls (P0.05).The DNAM 1 expression on CD + 8 cells from SLE showed relatively high positive correlation with SLEDAI and anti dsDNA antibody and that on CD + 8 T cells have negative correlation with C 3 and C 4 complement(P0.05).Conclusion:There are some abnormal activated T cell subsets in SLE.The expression of DNAM 1 on CD + 4?CD + 8 T cells with active SLE are increased.That on CD + 8 cells are correlated to SLEDAI?anti dsDNA antibody?C 3 and C 4 complement and there is a clinical correlation with it's levels.So DNAM 1 may play an important roles in the mechanisms of immune activation and immunopathology in SLE.