Study on SDF-1α and CD44v6 expression in multiple myeloma patients

Objective To explore the relationship of stromal derived factor 1α (SDF-1α) and CD44variant isoforms (CD44v6) with progress of multiple myeloma (MM). Methods Bone marrow mononuclear cells(MNCs) and bone marrow stromal cells (BMSCs) from 24 cases of MM patients (14 cases of untreated and relapsed and 10 cases of stable MM patients) and 15 cases of subjects were investigated as potential SDF-1αand CD44v6 product. The level of SDF-1α and CD44v6 of the conditioned media from MM patients and subjects were analyzed by ELISA. Results The level of SDF-1α and CD44v6 from MNCs in untreated and relapsed MM patients [(7232.41 ± 2644.97) pg/ml and (34.34 ± 13.20) ng/ml] were significantly higher than stable MM patients [(2315.49 ± 748.29) pg/ml and (15.69 ± 5.28) ng/ml] (t =6.25, t= 7.82, P ＜0.05) and 15 subjects [(1149.52 ± 636.06) pg/ml and (4.85 ± 3.62) ng/ml] (t= 4.60, t = 7.61, P＜ 0.05). The level of SDF-1α in stable MM patients was different from healthy subjects (P ＜0.05), but the level of CD44v6 in stable MM patients was not different from controls. The level of SDF-1α and CD44v6 in stable MM patients were significantly higher than health subjects (t = 2.99, t= 4.87, P ＜0.05). The level of SDF-1α was also detected from BMSCs of MM patients. When human MM cell lines U266 were adhered to BMSCs of 9 untreated and relapsed MM patients,and added rhIL-6 to it, there was significant increase of SDF-1α, compared with BMSCs in subjects and MM patients. The expression level of SDF-lα was correlated with the level of CD44v6 (r =0.51, P =0.03). Conclusion The increase of SDF-1α (may be produced by myeloma cells and BMSCs) and CD44v6 (may be produced by myeloma cells) activity is associated with the progress or pathogenesis of MM, and may be involved with tumor invasion. The completion of these processes in vivo may need participation of myeloma cells, BMSCs, IL-6,SDF-lα and CD44v6.     

Expression and clinical implication of HIF-1α mRNA in mononuclear cells of bone marrow of multiple myeloma

Objective To analyze the correlation between the expression of HIF-1α in multiple myeloma (MM) and clinical indexes in order to illustrate the expression and implication of HIF-1α gene in MM. Methods RQ-PCR method was used to amplify HIF-1α mRNA of bone marrow mononuclear cells isolated from 28 cases of MM patients and the control group. β-actin was used as internal standard. HIF-1α mRNA expression was analyzed by SDS software and the ratios of HIF-1α/ β-actin were calculated. Results The relative expression level of HIF-1α mRNA in MM bone marrow mononuclear cells was 12.68 times as that in control group. HIF-1α mRNA was positively correlated with β2-MG (r =0.575, P =0.000), ESR (r =0.522,P =0.000), LDH (r=0.286, P=0.044) and CRP (r =0.356, P =0.011). There was a negative correlation between HIF-1α mRNA and Hb (r =-0.556, P =0.000). Conclusion The expression of HIF-1α mRNA was up-regulated and HIF-1α was related to a number of clinical indexes. HIF-1α may be used to estimate the progress of MM and hopeful to be a new molecular target in cancer therapy.     

Expression and clinical implication of HIF-1α mRNA in mononuclear cells of bone marrow of multiple myeloma

Objective To analyze the correlation between the expression of HIF-1α in multiple myeloma (MM) and clinical indexes in order to illustrate the expression and implication of HIF-1α gene in MM. Methods RQ-PCR method was used to amplify HIF-1α mRNA of bone marrow mononuclear cells isolated from 28 cases of MM patients and the control group. β-actin was used as internal standard. HIF-1α mRNA expression was analyzed by SDS software and the ratios of HIF-1α/ β-actin were calculated. Results The relative expression level of HIF-1α mRNA in MM bone marrow mononuclear cells was 12.68 times as that in control group. HIF-1α mRNA was positively correlated with β2-MG (r =0.575, P =0.000), ESR (r =0.522,P =0.000), LDH (r=0.286, P=0.044) and CRP (r =0.356, P =0.011). There was a negative correlation between HIF-1α mRNA and Hb (r =-0.556, P =0.000). Conclusion The expression of HIF-1α mRNA was up-regulated and HIF-1α was related to a number of clinical indexes. HIF-1α may be used to estimate the progress of MM and hopeful to be a new molecular target in cancer therapy.     

多发性骨髓瘤患者基质细胞衍生因子-1α、CD44v6表达的研究

 目的　探讨基质细胞衍生因子-1α（SDF-1α）、CD44v6（一种变异的CD44受体）在多发性骨髓瘤（MM）中的表达水平及其与病情进展的关系。方法　用酶联免疫吸附试验（ELISA）检测24例MM患者[14例初发和复发MM患者（初发和复发MM组）,10例病情稳定MM患者（病情稳定MM组）]和15位健康骨髓移植供者或非肿瘤良性贫血患者（对照组）的骨髓单个核细胞（MNC）和骨髓基质细胞（BMSC）培养上清的SDF-1α、CD44v6水平。结果　初发和复发MM组MNC培养上清的SDF-1α、CD44v6表达水平[（7232.41±2644.97）pg／ml和（34.34±13.20）ng／ml]显著高于病情稳定MM组[（2315.49±748.29）pg／ml和（15.69±5.28）ng／ml]（t＝6.25、t＝7.82;均P＜0.05）和对照组[（1149.52±636.06）pg／ml和（4.85±3.62）ng／ml]（t＝4.60、t＝7.61;均P＜0.05）。病情稳定MM组SDF-1α、CD44v6水平显著高于对照组（t＝2.99、t＝4.87;均P＜0.05）。9例初发和复发MM组的BMSC与人类骨髓瘤细胞系细胞U266加入rhIL-6进行混合培养后,SDF-1α水平[（6180.25±5925.38）pg／ml]显著高于5例对照组BMSC[（1021.13±358.65）pg／ml]和9例初发和复发MM组[（1004.07±727.36）pg／ml]（t＝2.66、t＝2.42;均P＜0.05）。而其他BMSC各组间的SDF-1α水平差异无统计学意义（P＞0.05）。SDF-1α与CD44v6两者表达水平呈正相关（r＝0.51,P＝0.03）。结论　SDF-1α、CD44v6水平升高与MM的病情进展或发病有关,也可能与MM的肿瘤浸润过程有关;而这些体内过程可能需骨髓瘤细胞和BMSC与IL-6、SDF-1α和CD44v6等因素协同完成。     

Analysis of peripheral blood lymphocyte subsets in patients with multiple myeloma with different immunophenotypes

purpose To explore the clinical significance of detecting peripheral blood lymphocyte subsets in multiple myeloma (MM) patients with different immunophenotypes. method From January 2016 to June 2016, 40 MM patients from the People's Hospital of Xinjiang Uygur Autonomous Region were selected as the study subjects. Twenty healthy subjects were included in the control group. Bone marrow and peripheral blood samples were collected and flow cytometry was performed for antigen expression and lymphocyte subsets. Detection, analysis of the patient's immune phenotype and differences in lymphocyte subsets between the MM group and the control group. result The expressions of CD138, CD38, CD56, CD19, CD20, and CD45 in the MM and control groups were 100% (40/40), 100% (40/40), 75% (30/40), 0, and 20%, respectively ( 8/40), 0 and 100% (20/20), 100% (20/20), 0, 100% (20/20), 100% (20/20), 75% (15/20); MM Group immunophenotypes were divided into two groups: CD138 + CD38 + CD56 - CD19 - (10 cases) and CD138 + CD38 + CD56 + CD19 - (30 cases). CD3 + [(924±341)/ml ratio (1 474±270)/ml], CD4 + [(410±163)/ml ratio (871±214)/ml], CD4 + in the MM group The absolute counts of /CD8 + [(1.0±0.3)/ml ratio (1.6±0.5)/ml] and CD19 + [(72±26)/ml ratio (277±89)/ml] were smaller than the control. In the group, the differences were statistically significant (all P <0.05). There were no significant differences in the absolute counts of peripheral blood lymphocyte subsets among patients with different immunophenotypes in the MM group (all P > 0.05). in conclusion Flow cytometry can accurately classify MM patients, better distinguish between benign and malignant plasma cells, and assist clinical diagnosis of plasma cell myeloma patients. Combined lymphocyte subsets analysis can reflect the immune function of MM patients. © 2018 Chinese Medical Association Publishing House Co. Ltd. All rights reserved.     

Expression and significance of microRNA-32 in multiple myeloma

Objective： This study was aimed to explore the expression of microRNA-32（miR-32） in multiple myeloma（MM）, and study its association with β2-microglobulin and staging of MM by Durie-Salmon classification. Methods： The expression level of miR-32 in bone marrow mono-nuclear cells of MM were examined by real-time polymerase chain reaction（real-time PCR）, and the correlations between the expression level of miR-32 and related clinic pathologic features β2-microglobulin, staging of MM by Durie-Salmon classification were further analyzed. Results： The expression of miR-32 in MM patients was obviously higher than that in normal control（P 0.05）. The expression of miR-32 in relapsed/ refractory MM patients was obviously higher than that in newly diagnosed MM patients. The expression of miR-32 in MM patients decreased after chemical therapy than that before treatment, especially in effective group（P 0.05）. There was no statistically significant change in ineffective/progress group after chemical therapy（P 0.05）.The expression of miR-32 was associated to staging of MM and β2-microglobulin level. Conclusion： Expression level of miR-32 in MM patients is significantly higher than that in normal bone marrow, these data indicated that miR-32 may play an important role in the development of MM. High-regulated expression of miR-32 was associated with β2-microglobulin and staging of MM by Durie-Salmon classification.     

Expression and clinical significance of CD44 in the peripheral blood of patients with castric cancer

In recent years it was noted that the levels of adhesive molecules (CD44) in patients with malignancy were related to metastasis of tumors.[1(6] But only the expression of CD44 on malignant tumor cells was reported in medical literature. Up to now few reports appeared on the examination of CD44 level by flow cytometry in PB of patients with gastric cancer. In this work we investigated CD44% both in 110 patients with gastric cancer before operation and in 100 healthy subjects, and analyzed …     

Expression of Bmi-1,P16,and CD44v6 in Uterine Cervical Carcinoma and Its Clinical Significance

Objective Bmi-1,a putative proto-oncogene,is a core member of the polycomb gene family,which is expressed in many human tumors.The pl6 protein negatively regulated cell proliferation,whereas CD44v6 is associated with proliferation as an important protein.Additionally,CD44v6 is an important nuclear antigen closely correlated to tumor metastasis.The present study aims to investigate the expression and significance of Bmi-1,pl6,and CD44v6 in uterine cervical carcinoma(UCC). Methods A total of 62 UCC,30 cervical neoplasic,and 20 normal cervical mucosal tissues were used in the current study.The expression of Bmi-1,pl6,and CD44v6 in these tissues was determined using immunohistochemical assay.The relationships among the expression of these indices,the clinicopathologic features of UCC,and the survival rate of UCC patients were also discussed.The correlation between Bmi-1 protein expression and pl6 or CD44v6 protein in UCC was analyzed. Results The expression of Bmi-1,p16,and CD44v6 was significantly high in cervical carcinoma compared with that in the cervical neoplasia and normal colorectal mucosa(P<0.05).The over-expression of Bmi-1 protein in UCC was apparently related to the distant metastasis(P<0.01) and the tumor,nodes and metastasis-classification,i.e.the TNM staging,World Health Organization(P<0.05). Nevertheless,the positive expression of pl6 protein in UCC was not significantly associated with the clinicopathologic features (P>0.05).The Kaplan-Meier survival analysis showed that the over-expression of Bmi-1 significantly decreased the survival rate of UCC patients(P<0.05).A strong correlation indicated that there was statistical significance between the expression of Bmi-1 and CD44V6 proteins in UCC(r=0.419,P<0.001). Conclusions The over-expression of Bmi-1 and CD44v6 protein closely correlate to the tumorigenesis,metastasis,and prognosis of UCC.Bmi-1 and CD44v6 may be used to predict the prognosis of cervical carcinoma.Bmi-1 may indirectly regulate the expression of CD44v6 in UCC patients.The positive expression of p16 protein is possibly associated with the tumorigenesis,but not with the metastasis or prognosis of UCC.     

多发性骨髓瘤患者SDF-1α、OPN、CD44v6和TRACP-5b表达的研究

目的探讨基质细胞衍生因子-1α（SDF-1α）、骨桥蛋白（OPN）、变异的CD44受体（CD44v6）和抗酒石酸酸性磷酸酶5b（TRACP-5b）在多发性骨髓瘤（MM）发病中的作用。方法用ELISA法检测了32例MM患者和15例对照骨髓单个核细胞（MNCs）和骨髓基质细胞（BMSCs）的SDF-1α、OPN、CD44v6和TRACP-5b水平。结果 MNCs产生的SDF-1α、OPN、CD44v6水平在初发和复发组、病情稳定MM组和对照组显著下降（P〈0.05）。9例初发和复发患者的BMSCs与人骨髓瘤细胞系U266加入rhIL-6混合培养后,SDF-1α水平明显增高（P〈0.05）。SDF-1α、OPN、TRACP-5b水平在MM患者骨质破坏≥3处、〈3处和对照组显著下降（P〈0.05）。结论 SDF-1α、OPN和CD44v6水平升高与MM发病或病情进展、骨质破坏有关。     

Expression of HIF-1α and PTEN in bnman multiple myeloma bone marrow

Objective To investigate HIF-1α and PTEN expression in multiple myeloma(MM).Methods The expression of HIF-1α and PTEN was studied in 28 cases of MM with immunohistochemistry.Results Over-expression of HIF-1α was frequently(20 of 28 cases,71.4%)detected in MM bone marrow.Expression of HIF-1α between MM and control group bone marrow has significant differences(P＜0.01).The positive expression rate of PTEN in MM bone marrow was 42.9%(12 0f 28 cases).Expression of PTEN between MM and control group bone marrow has significant difierences(P＜0.01).There was negative correlation between the expression of HIF-1α protein and the PTEN protein(P＜0.05,r=-0.542).Conclusion The absence or low expression of PTEN and the increased levels of HIF-1α may play a critical role in the formation.development and invasion of MM.HIF-1α and PTEN may be used to estimate the progress of MM.     

贲门癌患者外周血CD4+CD25hiCD127low调节性T细胞水平及其临床意义

Objective To analyse the dysfunction of immunity and clinical significance in patients with cardiac cancer.Methods The level of CD4+ CD25hi CD127low Treg cells were detected by flow cytometry (FCM),and serum IL-10 and TGF-β1 levels were determined by enzyme linked immunosorbent assay (ELISA) kit in 56 patients with cardiac cancer.15 healthy volunteers were tested as normal controls.The clinical data of each patient were collected and analyzed. Results There was a significantly higher percentage of CD4+ CD25hi CD127low Treg cells in patients with cardiac cancer (5.73±1.56)% than that (4.45±1.06)% of healthy volunteers (P<0.01).The IL-10 and TGF-β1 levels in the serum of patients with cardiac cancer were also significantly higher than that of healthy volunteers (P<0.05).There was a positive correlation between levels of IL-10.TGF-β1 and the levels of CD4+ CD25hi CD127low Treg cells.The number of CD4+ CD25hi CD127low regulatory T cells in the peripheral blood of cardiac cancer patients were significantly correlated with clinical stages and metastasis lymph node.Conclusion The CD4+ CD25hi CD127low Treg cells in the peripheral blood of cardiac cancer patients is significantly increased in comparison with that in healthy volunteers,and was also correlated with different stages.The abnormal levels of CD4+ CD25hi CD127low Treg cells may be related to tumor progression in patients with cardiac cancer.     

贲门癌患者外周血CD4+CD25hiCD127low调节性T细胞水平及其临床意义

Objective To analyse the dysfunction of immunity and clinical significance in patients with cardiac cancer.Methods The level of CD4+ CD25hi CD127low Treg cells were detected by flow cytometry (FCM),and serum IL-10 and TGF-β1 levels were determined by enzyme linked immunosorbent assay (ELISA) kit in 56 patients with cardiac cancer.15 healthy volunteers were tested as normal controls.The clinical data of each patient were collected and analyzed. Results There was a significantly higher percentage of CD4+ CD25hi CD127low Treg cells in patients with cardiac cancer (5.73±1.56)% than that (4.45±1.06)% of healthy volunteers (P<0.01).The IL-10 and TGF-β1 levels in the serum of patients with cardiac cancer were also significantly higher than that of healthy volunteers (P<0.05).There was a positive correlation between levels of IL-10.TGF-β1 and the levels of CD4+ CD25hi CD127low Treg cells.The number of CD4+ CD25hi CD127low regulatory T cells in the peripheral blood of cardiac cancer patients were significantly correlated with clinical stages and metastasis lymph node.Conclusion The CD4+ CD25hi CD127low Treg cells in the peripheral blood of cardiac cancer patients is significantly increased in comparison with that in healthy volunteers,and was also correlated with different stages.The abnormal levels of CD4+ CD25hi CD127low Treg cells may be related to tumor progression in patients with cardiac cancer.     

食管癌、贲门癌患者外周血CD+8NKT细胞活化受体NKG2D及其分泌性配体sMICA检测的临床意义

Objective To evaluate the clinical diagnostic application and operative efficacy of the expression of NKG2D in peripheral blood CD+8 NKT cell and its ligand sMICA in patients with esophageal or cardiac carcinoma.Methods The peripheral blood NKG2D positive CD+8 NKT cell percentage was concomitantly determined by flow cytometry in 53 preoperative patients including 29 postoperative patients with esophageal or cardiac carcinoma and 30 healthy controls.The serum sMICA was determined by ELISA.Results The peripheral blood NKG2D positive CD+8 NKT cell percentage in patients was significantly lower than that in controls [(77.632±8.972) % vs (89.053±6.515) %] (t = -6.113,P ＜0.05); with stage Ⅱ,Ⅲ,Ⅳ,it decreased significantly in order (F = 99.251,P ＜0.01);with lymph node metastasis lower than that without lymph node metastasis (t = -10.384,P ＜0.01); squamous carcinoma was higher than adenocarcinoma (t =9.899,P ＜0.01); postoperative was significantly higher than preoperative (t =-4.319,P ＜0.01).The level of serum sMICA in patients was significantly higher than that in controls [(326.28±85.407) pg/ml vs (210.00±92.560) pg/ml](t =7.292,P ＜0.01); with stage Ⅱ,Ⅲ,Ⅳ,it increased significautly in order (F =63.355,P ＜0.01); with lymph node metastasis higher than that without lymph node metastasis (t =7.770,P ＜0.01); squamous carcinoma was lower than adenocarcinoma (t =-7.593,P＜0.01); postoperative was significantly lower than preoperative (t =7.027,P ＜0.01).Serum sMICA could inhibit peripheral blood CD+8 NKT cell activation receptor NKG2D (F =142.773,P ＜0.05),determination coefficient R2 = 0.7368.Conclusion The level of peripheral blood CD+8NKT cell activation receptor NKG2D and serum sMICA in patients could be an assistant indicator for     

食管癌、贲门癌患者外周血CD+8NKT细胞活化受体NKG2D及其分泌性配体sMICA检测的临床意义

Objective To evaluate the clinical diagnostic application and operative efficacy of the expression of NKG2D in peripheral blood CD+8 NKT cell and its ligand sMICA in patients with esophageal or cardiac carcinoma.Methods The peripheral blood NKG2D positive CD+8 NKT cell percentage was concomitantly determined by flow cytometry in 53 preoperative patients including 29 postoperative patients with esophageal or cardiac carcinoma and 30 healthy controls.The serum sMICA was determined by ELISA.Results The peripheral blood NKG2D positive CD+8 NKT cell percentage in patients was significantly lower than that in controls [(77.632±8.972) % vs (89.053±6.515) %] (t = -6.113,P ＜0.05); with stage Ⅱ,Ⅲ,Ⅳ,it decreased significantly in order (F = 99.251,P ＜0.01);with lymph node metastasis lower than that without lymph node metastasis (t = -10.384,P ＜0.01); squamous carcinoma was higher than adenocarcinoma (t =9.899,P ＜0.01); postoperative was significantly higher than preoperative (t =-4.319,P ＜0.01).The level of serum sMICA in patients was significantly higher than that in controls [(326.28±85.407) pg/ml vs (210.00±92.560) pg/ml](t =7.292,P ＜0.01); with stage Ⅱ,Ⅲ,Ⅳ,it increased significautly in order (F =63.355,P ＜0.01); with lymph node metastasis higher than that without lymph node metastasis (t =7.770,P ＜0.01); squamous carcinoma was lower than adenocarcinoma (t =-7.593,P＜0.01); postoperative was significantly lower than preoperative (t =7.027,P ＜0.01).Serum sMICA could inhibit peripheral blood CD+8 NKT cell activation receptor NKG2D (F =142.773,P ＜0.05),determination coefficient R2 = 0.7368.Conclusion The level of peripheral blood CD+8NKT cell activation receptor NKG2D and serum sMICA in patients could be an assistant indicator for     

Clinical significance of hypoxia inducible factor-1α expression on postoperative adjuvant radiotherapy in esophageal carcinoma

Objective To determine the effects of hypoxia inducible factor-1α(HIF-1α) expression on postoperative adjuvant radiotherapy in esophageal carcinoma. Methods 95 cases with esophageal carcinoms who received radical operation were analyzed with followed-up data from 1995 to 1998.Expression of HIF-1α in 45 patients with esophageal carcinoma who received radiotherapy after radical operation were deternlined by immunohistochemical method in contrast with 50 patients with esophageal carcinoma received surgery alone.Kaplan-Meier method and COX proportional hazard model were used to analyze.Results The positive expression of HIF-1α in esophageal carcinoma was observed mainly in the nucleus of tumor cells.The positive expression rate of HIF-1α in esophageal carcinoma was 58.9%.The expression of HIF-1α had no relationship with age,sex,histologic subtype and T stage,but had positive relationship with recurrence and distant metastasis.There was significant difference between patients with positive and negative HIF-1α protein expression in surgery alone and postoperation radiotherapy group. COX model analysis showed that HIF-1α had separate and significant impacts on prognosis in surgery group and surgery plus radiotherapy group. Conclusion Over expression of HIF-1α protein suggests a poor prognosis,and has tendency to resist radiotherapy in esophageal carcinoma.     

Clinical significance of hypoxia inducible factor-1α expression on postoperative adjuvant radiotherapy in esophageal carcinoma

Objective To determine the effects of hypoxia inducible factor-1α(HIF-1α) expression on postoperative adjuvant radiotherapy in esophageal carcinoma. Methods 95 cases with esophageal carcinoms who received radical operation were analyzed with followed-up data from 1995 to 1998.Expression of HIF-1α in 45 patients with esophageal carcinoma who received radiotherapy after radical operation were deternlined by immunohistochemical method in contrast with 50 patients with esophageal carcinoma received surgery alone.Kaplan-Meier method and COX proportional hazard model were used to analyze.Results The positive expression of HIF-1α in esophageal carcinoma was observed mainly in the nucleus of tumor cells.The positive expression rate of HIF-1α in esophageal carcinoma was 58.9%.The expression of HIF-1α had no relationship with age,sex,histologic subtype and T stage,but had positive relationship with recurrence and distant metastasis.There was significant difference between patients with positive and negative HIF-1α protein expression in surgery alone and postoperation radiotherapy group. COX model analysis showed that HIF-1α had separate and significant impacts on prognosis in surgery group and surgery plus radiotherapy group. Conclusion Over expression of HIF-1α protein suggests a poor prognosis,and has tendency to resist radiotherapy in esophageal carcinoma.     

Correlations of 99Tcm-HL91 SPECT hypoxia imaging with HIF-1α and VEGF expression in non-small cell lung cancer

Objective 99Tcm-HL91(99Tcm labeled 4,9-diaza-3,3,10,10-tetramethyldodecan-2,11-dione dioxime)is a potential noninvasive marker of tumor hypoxia.It has been reported that 99Tcm-HL91 has validity for hypoxia imaging in non-small cell lung cancer(NSCLC).The aim of this study was to evaluate the 99Tcm-HL91 SPECT hypoxia imaging of NSCLC,the expression of inducible hypoxia factor-1α (HIF-1α)and vascular endothelial growth factor(VEGF),and to analyze their correlations with clinicopathological characteristics.Methods Twenty NSCLC patients who underwent radical resection were enrolled into this study prospectively.99Tcm-HL91 SPECT scanning was performed in all patients at one or two days before surgery.After intravenous injection of approximately 740 MBq 99Tcm-HL91,anterior,posterior and lateral planar images were collected at 2,4 and 6 hours,respectively.Regions of interest (ROls)were drawn in the tumor and the contralateral normal lung tissue,and the radioactivity ratio of tumor to normal tissue(T/N)was calculated.Immunohistochemistry was used to detect the expression of HIF-1α and VEGF in sequential histological sections of specimens.Results Among the 20 NSCLC patients,13 showed positive expression of HIF-1α and 15 had positive expression of VEGF,with a positive rate of 65.0% and 75.0%,respectively.The uptake of 99Tcm-HL91 was strongly correlated with the expression status of HIF-1α.No correlation between HIF-1α and VEGF expression levels was observed.The HIF-1α expression level was not correlated with histological subtype,but with lymph node involvement.The expression levels of HIF-1α and VEGF were positively correlated with tumor stage.Conclusion The result of 99Tcm-HL91 SPECT hypoxia imaging is found to be positively correlated with expression of HIF-1α in the non-small cell lung cancer.HIF-1α expression is positively correlated with VEGF expression.Furthermore,both HIF-1α and VEGF expressions are increasing with the increase of tumor stage.     

C反应蛋白对多发性骨髓瘤细胞株U266生长影响的研究

Objective In the present study,we examined the expression changes of Survivin/HSP90α,in C-reactive protein(CRP)treated human multiple meyloma(MM) cell lies.Methotis The human MM cell lines were cultured for 3 days and incubated with human CRP(0.5,10,20 mg/L for 24 hours) and analyzed by blood analyser for proliferation ratio.The effects of CRP in MM cell lines in various concentrations on survivin/HSP-90α mRNA expression were examined by RT-PCR.Results Proliferation ratio of U266 cell line was significantly increased,and the expression of survivin/HSP-90α were upregulated(gene promoting cell survival)at mRNA levels in proportion to increased CRP concentrations.Conclusion These results demonstrated that proliferation ratio.survivin and HSP-90α could be regulated by CRP in MM cells.