Identification of myeloid-derived suppressor cells in peripheral blood of patients with non-Hodgkin lymphoma and its clinical significance / 白血病·淋巴瘤

Objective To explore the presence of myeloid-derived suppressor cells (MDSC) in patients with non-Hodgkin lymphoma (NHL) and its clinical value. Methods Peripheral blood samples were collected from 69 NHL patients and 21 healthy controls admitted in Jilin Cancer Hospital from January 2014 to February 2015. Flow cytometry was conducted to identify unique cell surface markers of MDSC using antibodies against CD11b, CD33, CD14 or HLA-DR. MDSC were enriched by immunomagnetic beads, then arginase 1 (Arg-1), inducible nitric oxide synthase (iNOS) and cyclooxygenase 2 (COX-2) in which were detected by real time-PCR. In vitro, cell proliferation assay was used to test T cell function. Statistical analysis was used to explore the correlation between MDSC and clinical features. Results There were a high level of CD11b+CD14+CD33+cells in peripheral blood of NHL patients. The morphology of the cells belonged to mononuclear cells. The ratio of monocytic CD11b+CD14+CD33+cells in NHL patients was higher than those in healthy controls [(42±10) ％ vs. (34±11) ％, t= 0.300, P= 0.005]. The expressions of Arg-1, COX-2 and iNOS in CD11b+CD14+CD33+and CD11b+CD14+CD33-cells were 0.12±0.04 vs. 1.00±0.25 (t= 6.095, P=0.024), 3.03±0.45 vs. 1.00±0.78 (t= 7.766, P= 0.016) and 0.29±0.11 vs. 1.00±0.04 (t= 1.987, P= 0.209), respectively. In addition, the CD11b+CD14+CD33+cells inhibited T cell proliferation. The levels of MDSC in patients with different international prognostic index (IPI) score were significantly different (F= 2.536, P=0.049), but the levels of MDSC in patients with different sex, age, pathological type, stage, serum lactate dehydrogenase, physical status staging criteria and β2-microglobulin had no differences (all P < 0.05). Conclusions CD11b+ CD14+ CD33+ cells are characterized as MDSC in terms of higher level in NHL patients, expressing myeloid-specific proteins, and inhibiting T cell proliferation. The expression of MDSC is associated with IPI score, implying it might be a novel biomarker in clinical practice for NHL patients.

The expression of B7-H1 in thyroid papillary carcinoma and its clinical significance / 中国医师杂志

Objective To investigate the expression and clinical significance of B7-H1 in normal thyroid tissues adjacent to nodular goiter and thyroid papillary carcinoma.Methods Immunohistochemistry EnVisionTM two step staining method was used to monitor tumor expression of B7-H1, its relationship with clinicopathological features was analyzed.Results The positive reaction of B7-H1 material as brown granules showed positive in cytoplasm, with occasional cell nuclear staining.Positive expression of B7-H1 in papillary thyroid carcinoma tissues 58.2％ (39/67) was significantly higher than that 12.5％ (2/16) of expression of B7-H1 in the normal thyroid tissues adjacent to nodular goiter.B7-H1 in thyroid papillary carcinoma score 2.94 ± 1.843 was significantly higher than the score 0.88 ± 1.204.(P ＜ 0.01) of B7-H1 in the normal thyroid tissues adjacent to nodular goiter.The average rank of B7-H1 expression in poorly differentiated papillary thyroid carcinoma 40.92 was significantly higher than the average rank expression in papillary thyroid carcinoma with high differentiation in 27.18 and 34.67, the average rank expression in lymph node metastasis in papillary thyroid carcinoma was significantly higher than 35.93 of the average rank expression without lymph node metastasis in papillary thyroid carcinoma (18.75, P ＜0.01).Conclusions The expression of B7-H1 was significantly higher in papillary thyroid carcinoma than in normal thyroid tissue, and was positively correlated with the degree of differentiation and lymph nodes.

Clinical significance of sCD14-ST in early diagnosis of children sepsis / 中华检验医学杂志

Objective To explore the clinical significance of sCD14-ST in diagnosing children sepsis and monitoring the treatment effects. Methods Case-control study. Patients were recruited by Longyan First Hospital from August 2013 to March 2015.The sCD14-ST, WBC, CRP, PCT and APACHE-Ⅱlevels were measured in 237 septic children ( infectious SIRS, including 120 bacterial and 117 nonbacterial SIRS) , 89 non-infectious SIRS and 156 healthy children.The changes and the correlation of the five indicators in septic children before and after treatment was compared.The diagnosis value of sCD14-ST in sepsis by the receiver operationg characteristic curves ( ROC) was analyzed.Results The sCD14-ST level in septic children [643.47(596.47 -690.46) ng/L] was higher than that in non-infectious SIRS [246.94(234.85-259.03)ng/L]and healthy control [151.00(142.79-159.22)ng/L](χ2 =121.850, 325.663, P<0.01).The whole blood level of sCD14-ST in bacterial sepsis [606.17(542.71-669.63) ng/L]and non-bacterial sepsis [679.83(610.37-747.29)ng/L]were no significance (χ2 =0.854, P=0.335), while compared with the control group, they had significant differences (χ2 =326.228, P<0.01) .Totally 80 blood culture samples were positive in 117 bacterial septic children, and the sCD14-ST level was not significant between Gram positive bacteria infection and [641.07 (553.82 -728.31) ng/L] Gram negative bacteria infection[750.00(597.10 -902.89) ng/L] (χ2 =1.12,P=0.29), but the sCD14-ST level in blood culture positive children was significantly higher than healthy controls ( chi-square =117. 46, 155.846, P<0.01).sCD14-ST, WBC, CRP, PCT, APACHE-Ⅱscore before and after treatment were all significantly decreased ( χ2 =44.569, 113.337, 63.986, 100.055, 51.015, P<0.01).The sCD14-ST was significantly positively related withCRP and APACHE-Ⅱ score before treatment, but there were no correlation with WBC and PCT.The ROC-AUC of sCD14-ST in septic children was 0.901.Compared with the ROC-AUCs of WBC ( 0.875 ) and CRP ( 0.836 ) , there were statistically significant different ( P<0.01).The sensitivity and specificity of sCD14-ST were 85%, 90%, respectively.Conclusions The study suggested that sCD14-ST superior value to the diagnosis of sepsis in children than other parameters.It should be applied as a valuable biomarker for early diagnosis and the evaluation of severity of sepsis.

Mechanism of Allergic Asthma Pathogenesis by Protease Allergen / 한양의대학술지

Asthma is a complex immune mediated chronic inflammatory lung disease characterized by chronic inflammation of the airways, airway hyper-responsiveness and airway obstruction, and the prevalence of this disease has increased in recent years. It is well known that many features of allergic asthma are consequences of Th2 cell dominated immune responses against allergens, thus allergen specific Th2 cells play a critical role in the pathogenesis. In this review, we will discuss the properties of common indoor and outdoor allergens including house dust mite, fungus, pollen and cockroach, the activation and differentiation of naive CD4 T cells by protease allergens, how specific allergens modify host's immune system to mediate immune evasion, and regulation of homing receptor expression and trafficking of allergen specific Th2 cells. Lastly, we will also overview the general course of pathogenesis of allergic asthma and discuss prospects of development of novel immuno-therapies to asthma.

Cluster of differentiation 74 Plays a role in prognosis of the patients with hepatocellular carcinoma after curative resection / 中华检验医学杂志

Objective By analyzing the expression of cluster of differentiation 74 (CD74) in hepatocellular carcinoma (HCC) and HCC cell lines,the correlation between the level of CD74 expression and the patients' prognosis was investigated.MethodsThe expression of CD74 in high metastatic potential HCC cell lines(MHCC-LM3,MHCC-97H),low metastatic potential HCC cell line( MHCC-97L),and no metastatic potential HCC cell line(Hep-G2) were estimated by Western blot.The paraffin embedded tissues which include intra-tumor and paratumor tissues were collected from 320 patients who had received HCC curative surgical resection and 5 normal liver tissues from the donors of liver tranplantation.The high density tissue micro-array was made of these specimens. Immunol-histochemistry was applied to discover the different levels of CD74 in tumor,paratumor and normal liver tissues.Survival curves were generated by the Kaplan-Meier method and verified by the Logrank test.Cox proportional hazards regression analysis was applied to estimate the prognostic factors in multivariate analysis.ResultsThe expression level of CD74 was significantly higher in low metastatic potential and no metastatic potential HCC cell lines (MHCC-97L 1.224 ±0.014,Hep-G2 1.374 ±0.006) than that in high metastatic potential ones( MHCC-LM3 0.622 ±0.078,MHCC-97H 0.732 ± 0.083 ).Significant differences can be found between the groups (t =- 13.308,- 16.849,- 10.177,- 13.436,- 17.057; P ＜0.01 ).Meanwhile,in tumor tissues,the CD74 was expressed positively in 221 patients and negatively in 99 patients.But CD74 was expressed slightly in paratumor and negatively in 5 normal liver tissues.There's no significant differences between the groups categorization according to age,HBsAg,cirrhosis,AFP level,tumor number,tumor size,tumor capsule,blood vessel invasion,Edmondson Grades and tumor nodes metastasis classification (TNM) stages (x2 =0.053,0.141,1.200,0.000,0.277,1.975,0.263,1.044,0.000,0.433 ; P ＞ 0.05 ),except gender (x2 =3.954,P ＜ 0.05).Kaplan-Meier method showed that patients with positively expression of CD74 had better prognosis than others (x2 =5.620,P ＜ 0.05 ).Cox proportional hazards regression analysis showed that CD74 was a significant and independent prognostic factor of survival [ hazard ratio (HR) =0.721,95％confidence interval (CI) =0.522 - 0.996,P ＜ 0.05 ].Conclusion The expression of CD74 in hepatocellular carcinoma could be a biomarker of the prognosis and there's some potential correlation with cancer cell apoptosis.

Microenvironment of primary liver cancer and regulatory T cells / 国际肿瘤学杂志

Regulatory T cell (Treg) infiltration is an important mechanism for inhibition of tumor immune microenvironment. Treg is highly expressed in peripheral blood and tumor tissue of various cancer patients. A high expression of Treg may inhibit the antitumor effect of CD4 + CD8 + T lymphocytes or induce immunological resistance to tumor antigens among cytotoxic T lymphocytes(CTL) without producing acute or memory CTL responses, resulting in tumor escape from immuneattack and immune suppressionin in the tumor microenvironment.

Effects of vascular endothelial growth factor from pulmonary stromal cells on differentiation and function of dendritic cells / 中华老年医学杂志

Objective To observe the effects of vascular endothelial growth factor(VEGF)from pulmonary stromal cells on differentiation and function of mature dendritic cells (mDC) and the immune tolerance. Methods Co-culture system of murine pulmonary stroma cells (MPSC)/mDC was established as control group,and VEGF-Ab add-on treatment to co-culture cells as experimental group.Cytokines secreted from pulmonary stroma cells were detected by RT-PCR.The expression of cellular phenotype and ability of the mDC-induced T cells reproductive activity were detected by flow cytometry and CCK-8,respectively.Results CD86 expression of VEGF-Ab group was higher than of control group (P ＜ 0.05).There was no difference in the ability of mDC-induced T cells reproductive activity between the two groups(P＞0.05).Conclusions VEGF might be involved in the regulation of immune tolerance by reducing expression of CD86 in dendritic cells.

Use of CD25 as an immunohistochemical marker for acquired ocular toxoplasmosis / Uso do CD25 como um marcador imuno-histoquímico de toxoplasmose ocular adquirida

PURPOSE: Toxoplasmosis is the most common cause of posterior infectious uveitis worldwide. It is often impossible to determine its congenital or acquired nature. Interleukin-2 (IL-2) in peripheral blood has been described as a possible marker for acquired toxoplasmosis. The purpose of this study is to evaluate the histopathological characteristics of ocular toxoplasmosis cases using CD25 as a marker for the expression of interleukin-2. METHODS: Ten formalin-fixed, paraffin-embedded enucleated globes from ten immunocompetent patients with clinical diagnosis of toxoplasmosis were evaluated. Four patients had the acquired form of ocular toxoplasmosis (positive IgM) while six were IgM negative and IgG positive for toxoplasmosis. Histopathological slides were reviewed for the extension of the retinal necrosis, number of toxo cysts, the granulomatous inflammatory reaction, the presence of T and B cells within the choroid and the IL-2 expression. Immunohistochemistry using monoclonal antibodies was performed to observe the expression of CD4, CD8, CD20, CD25, and CD68. RESULTS: The histopathological evaluation disclosed no differences between acquired and the other ocular toxoplasmosis cases regarding the characteristics studied. However, CD25 showed a higher expression of IL-2 on the 4 acquired cases of ocular toxoplasmosis compared to the remainders. CONCLUSIONS: To the best of our knowledge, this is the first report showing that the use of CD25 as a marker for interleukin-2 could differentiate acquired ocular toxoplasmosis.

OBJETIVO: Toxoplasmose é a causa mais comum de uveíte posterior no mundo. Em grande parte dos casos, não é possível determinar se a doença ocular é devida a um quadro congênito ou adquirido. Interleucina-2 (IL-2) no sangue periférico foi descrita como um possível marcador de toxoplasmose adquirida. O objetivo deste estudo foi avaliar as características de casos de toxoplasmose usando CD25 como um marcador da expressão de interleucina-2. MÉTODOS: Dez olhos enucleados fixados com formalina e embebidos em parafina de dez pacientes imunocompetentes com diagnóstico clínico de toxoplasmose ocular foram examinados. Quatro pacientes tinham a forma adquirida (IgM positivo) enquanto 6 eram IgM negativo e IgG positivo para toxoplasmose. Cortes histopatológicos foram avaliados quanto a extensão de necrose retiniana, número de cistos de T. gondii, reação granulomatosa e presença de células B e T na coróide, bem como a expressão de interleucina-2. Estudo imuno-histoquímico utilizando anticorpos monoclonais foi realizado para determinar a expressão de CD4, CD8, CD20, CD25 e CD68. RESULTADOS: A avaliação histopatológica não mostrou diferenças entre os casos de toxoplasmose ocular com relação às características avaliadas mencionadas anteriormente. Entretanto, CD25 revelou maior expressão de interleucina-2 nos 4 casos adquiridos comparado com os demais. CONCLUSÕES: Expressão elevada de CD25 foi encontrada em todos os casos de toxoplasmose ocular adquirida. Assim, o uso de CD25 como marcador da interleucina-2 pode ser uma ferramenta útil para diferenciar toxoplasmose ocular congênita de adquirida.

Expression of macrophage migration inhibitory factor and CD_(74) in preeclamptic placenta and its correlation with preeclampsia / 中华妇产科杂志

Objective To investigate the expression of macrophage migration inhibitory factor (MIF) and CD_(74), the receptor of MIF, in preeclamptic placenta and its correlation with the pathogenesis of preeclampsia.Methods From March 2008 to November 2008,69 preeclamptic women who delivered in the Department of Obstetrics, Affiliated Hospital of Qingdao University Medical College,were recruited,including 33 women with mild preeclampsia (MPE group) and 36 women with severe preeclampsia (SPE group).Another 43 healthy pregnant women were taken as control group.Immunoturbidimetry was applied to measure the concentrations of C-reactive protein (CRP) in maternal blood.The expressions of MIF and CD_(74) in placenta were tested with immunohistochemistry and the expressions of MIF mRNA and CD_(74) mRNA were detected by semiquantitative RT-PCR.The relationship between maternal blood level of CRP and MIF mRNA and CD_(74) mRNA in placenta was analyzed in the MPE and SPE group.Results (1) MIF and CD_(74) were expressed in the placenta of all pregnant women in the 3 groups, as shown in brown-yellow color, and significantly higher expression was found in the MPE and SPE group.(2) The expression of MIF mRNA and CD_(74) mRNA in the MPE group (0.70±0.13 and 0.96±0.16), SPE group (0.88 ± 0.12 and 1.08 ± 0.15) were significantly higher than in the control group (0.67 ± 0.11 and 0.83 ± 0.14) (P < 0.01), and statistical significance was also found between the MPE and SPE group (P <0.01).(3)The maternal blood concentrations of CRP in the MPE and SPE group were significantly higher than in the control group [(15.3±7.0) mg/L and (21.6±9.1)mg/L vs (4.8 ± 1.8) mg/L, P <0.01] , and significant difference was also found between the MPE and SPE group (P <0.01).(4) In the two preeclamptic groups, the blood concentrations of CRP were positively correlated with the expression of both MIF mRNA(r =0.67 ,P <0.01)and CD_(74) mRNA(r =0.83 ,P <0.01) in placenta.Positive correlation was also found between the levels of MIF mRNA and CD_(74) mRNA in placenta (r =0.93 ,P < 0.01).Conclusions Overexpression of MIF and CD_(74) in the placenta may up-regulate the CRP level in maternal blood, resulting in systemic inflammatory reaction and vascular endothelium damage which may be involved in the pathogenesis of preeclampsia.

Selective addition of CXCR3+CCR4-CD4+ Th1 cells enhances generation of cytotoxic T cells by dendritic cells in vitro

Increasing importance is being given to the stimulation of Th1 response in cancer immunotherapy because its presence can shift the direction of adaptive immune responses toward protective immunity. Based on chemokine receptor expression, CXCR3+CCR4-CD4+ T cells as Th1-type cells were investigated its capacity in monocyte-derived dendritic cell (DC) maturation and polarization, and induction of antigen specific cytotoxic T lymphocytes (CTL) in vitro. The levels of IL-4, IL-5 and IL-10 were decreased to the basal level compared with high production of IFN-gamma, TNF-alpha, and IL-2 in CXCR3+CCR4-CD4+ T cells stimulated with anti-CD3 and anti-CD28 antibodies. Co-incubation of activated CD4+ or CXCR3+CCR4-CD4+ T cells with DC (CD4+/DC or CXCR3+CD4+/DC, respectively) particularly up-regulated IL-12 and CD80 expression compared with DC matured with TNF-alpha and LPS (mDC). Although there was no significant difference between the effects of the CXCR3+CCR4-CD4+ and CD4+ T cells on DC phenotype expression, CXCR3+CD4+/DC in CTL culture were able to expand number of CD8+ T cells and increased frequencies of IFN-gamma secreting cells and overall cytolytic activity against tumor antigen WT-1. These results demonstrated that the selective addition of CXCR3+CCR4-CD4+ T cells to CTL cultures could enhance the induction of CTLs by DC in vitro, and implicated on a novel strategy for adoptive T cell therapy.

Immunophenotyping of myeloid leukemia in transgenic mouse model / 中华检验医学杂志

Objective To analyze the immunophenotyping characteristics of myeloid leukemia in transgenic mouse.Methods According to differential antigen expression profile on various hematopoietic lineages,flow cytometric analysis of bone marrow sample was performed on 5 myeloid leukemia mice and 10 healthy BL6 mice.Cell cycle analysis was further performed to assess cell proliferation.Results Expressions of Mac-1+ Gr-1+ and c-Kit+ in bone marrow cells in transgenic leukemia mice were(72.6±6.5)% and (20.5±4.8)%,and it were significantly higher than those in normal mice[(52.8±4.8)% and(2.1±0.3)%](t=6.66,12.66,P＜0.01).And expressions of B220+,CD3+,CD41+ and Ter119+ in leukemia mice were(2.7±1.1)%,(1.2±0.3)%,(1.2±0.6)% and(2.8±1.1)%,respectively.It were significantly lower than those in normal mice[(20.2±2.1)%.(6.6±1.3)%,(4.7±1.1)% and(10.6±1.2)%](t=-17.63,-8.69,-6.30,-12.28,P＜0.01).The percentages of S phase and G2/M phase in leukemia mice were(25.7±4.2)% and(21.1±4.2)%,respectively.It were significantly increased as compared with normal mice[(11.8±2.1)% and(8.9±1.8)%](t=8.59,7.98,P＜0.01).Conclusions Immunophenotyping of myeloid leukemia in transgenic mouse was characterized by hish expression of myeloid specific marker(Mac-1 and Gr-1)and hematopoietic stem/progenitors cells specific marker(c-Kit),and by low expression of B-lymphoid specific marker(B220),T-lymphoid(CD3),megakaryocyte(CD41)and Erythroid(Ter119).

Influence of the blocking antibodies on paternal T lymphocyte differentiation antigens (CD3,CD4 and CD8) in women with pregnancy induced hypertension / 中华围产医学杂志

Objective To study the association between paternal CD3, CD4 and CD8 antigenecity to their pregnant spouses and the development of pregnancy induced hypertension (PIH). Methods Maternal serum from 15 women with PIH in the third trimester and 82 in normal pregnancies (16 in the first, 32 in the second and 34 in the third trimester) were incubated with paternal T lymphocytes. Monoclonal CD3, CD4 and CD8 fluorescent conjugated antibodies were then added and the percentage of paternal T cell differentiation antigen CD3, CD4 and CD8 were measured by flow cytometry. Results During normal pregnancy, the levels of maternal serum blocking antibodies on paternal CD3, CD4 and CD8 were (4.14?1.02, 2.02 ?0.24, 2.37?1.05)% in first trimester, (-0.29?0.13, 1.03?0.27, 0.65?0.23)% in the second trimester and (-1.33?1.47,0.15?0.01, -1.04? 0.37)% in the third trimester. There were significant difference between them( P

Constitutive expression of 4-1BB on T cells enhances CD4+ T cell responses

4-1BB, a transmembrane molecule, member of the tumor necrosis factor receptor superfamily, is an important costimulatory molecule in the immune response, plays a key role in the clonal expansion and survival of CD8(+)T cells. In this study, we investigated 4-1BB regulation of CD4(+)T cell responses using 4-1BB transgenic (TG) mice that constitutively expressed 4-1BB on mature T cells. We first showed that CD4(+)T cells of 4-1BB TG mice had more sustained proliferative capacity in response to TCR/4-1BB stimulation in vitro compared to WT mice. Secondly, 4-1BB TG mice exhibited a more elevated contact hypersensitivity (CHS) response mediated by CD4+ Th1 cells due to more vigorous expansion of and apoptotic inhibition of CD4(+)T cells. Finally, CD4(+)T cells of 4-1BB TG mice had a heightened capacity for T cell priming. Overall, our results demonstrate the involvement of 4-1BB in CD4(+)Th1 cell responses by regulating the clonal expansion and survival of CD4(+)T cells as seen in CD8(+)T cells.

Differentiation of mouse mononuclear cells from bone marrow into hepatocyte-like cells / 中华器官移植杂志

Objective To establish an effective method for inducing mouse bone marrow mononuclear cells(MNCs) to differentiate into hepatocytes.Methods MNCs were isolated by gradient density centrifugation,and the cells were cultured in Iscove's Modified Dulbecco's medium supplemented with 10 % new bovine serum(NBS),20 ng/ml hepatocyte growth factor(HGF),10 ng/ml fibroblast growth factor-4(FGF-4) and 10 ng/ml oncostatin m(OSM) for 21 days' induction.The medium was changed every 3 days.Results When MNCs were cultured with HGF,FGF-4 and OSM,cuboidal morphology was observed,and cells also expressed marker genes specific for liver cells in a time-dependent manner.?-fetoprotein(AFP) and cytokeratin 19(CK19) were expressed on the day 7,and CK18 and TAT were detected on the day 14-21,in common with the immunofluoresence results.Differentiated cells further demonstrated these cells also acquired functional characteristics of hepatocytes.Conclusion Mouse MNCs can differentiate into hepatocytes when induced by HGF,FGF-4 and OSM.

The clinical study of gastrointestinal stromal tumors in the elderly / 中华老年医学杂志

Objective To investigate the clinical-pathologic and immunohistochemical features of gastrointestinal stromal tumors(GISTs). Methods All of patients with GISTs who underwent surgical treatment were studied by clinical pathology and immunohistochemistry. The expresstions of D117,CD34,vimentin,desmin,S-100 etc. were detected with SP method. The endoscopic characteristics were reviewed. Results A total of 15 patients was enrolled in the study,with 3 benign,5 borderline,and 7 malignant cases. The common symptoms included the gastrointestinal bleeding and abdominal pain,some had abdominal masses. Endoscopically,the gastric stromal tumors showed submucosal protuberant lesions. Eight tumors were located in fundus,four in body,two in antrum. The submucosal masses of 6 patients existed with ulcer on the surfaces. Histology revealed typical stromal tumor features with spindle,epithelioid,or mixed appearance. The tumor cells were arranged in whirling and pallisading. All cases were positive for CD117 and CD34,vimentin,but negative for desmin. The positive rate of S-100 was only 7.1%. Conclusions GISTs are the most frequent mesenchymal tumors. CD117,CD34 can be used to diagnose GISTs as immunomarker.

Clinical study on the expression of lymphocyte activation antigen in peripheral blood of aged patients with non-small cell lung cancer / 中华老年医学杂志

Objective To analyze the expression of T lymphocyte activation antigen in peripheral blood of aged patients with non-small cell lung cancer . Methods The lymphocytes from peripheral blood in 45 aged patients with non-small cell lung cancer were immunologically labeled in double fluorescence and CD3-FITC, CD25/HLA-DR and CD69-PE and determined by flow cytometry. Normal aged donors, young patiens with lung cancer and aged benign lesion group were used as controls. Results Peripheral blood CD3 +/CD25 +, CD3 +/HLA -DR + and CD3 +/CD69 + in T lymphocyte with 45 aged lung cancer(7.24?1.85,28.46?5.39 and 7.78?2.63, respectively) were significantly lower than those in normal aged controls(10.35?2.54,37.16?5.51,11.02?2.18, respectively)and aged benign lesion (9.53?3.02, 35.33?5.23, 10.67?2.45, respectively)( P 0.05). Significant differences were found among them in stages Ⅲ, Ⅳ(7.15?1.13, 25.32?5.23, 7.14?2.81, respectively) and stagesⅠ,Ⅱ(8.06?1.21, 30.27?6.05, 8.43?2.67, respectively)( P 0.05). Conclusions Detection of CD3 +/CD25 +, CD3 +/HLA -DR + and CD3 +/CD69 + levels by flow cytometry might be helpful for reflecting the human immune function and the prognosis evaluation in patients with aged non-small cell lung cancer.

The association between the inducible costimulatory molecules,CD_(28),CD_(24) gene polymorphisms and multiple sclerosis / 中华神经科杂志

Objective To investigate the relationship between the gene polymorphism of the inducible costimulatory molecules (ICOS),CD_(28),CD_(24) and susceptibility to multiple sclerosis(MS). Methods 83 patients with MS and 110 controls selected from healthy individuals and hospital staff in Chinese Han people with non-autoimmune diseases were studied by detecting genotype of the 3 genes using PCR-RFLP method. Results The frequency of ICOS-2394 TT genotypes was significantly higher in MS patients than in controls (MS 33.7%vs controls 10.9%, P