Objective To quantitatively analyze the mRNA and protein expression level of a proliferation-inducing ligand (APRIL) and investigate its clinical significance in peripheral blood mononuclear cells and plasma from newly diagnosed patients with B-cell chronic lymphocytic leukemia (B-CLL).Methods The mRNA of the target gene in 32 B-CLL patients and 15 health controls was quantified with real-time fluorescence quantitative polymerase chain reaction (RFQ-PCR) and protein by enzyme-linked immunosorbent assay (ELISA).Results APRIL mRNA was assayed with RFQ-PCR,the intra-and inter-batch reproducibility showed the coefficient of variation (CV) were 1.69 ％-6.98 ％ and 6.49 ％-10.27 ％,respectively.The expressions of APRIL mRNA and protein in patients with B-CLL were significantly higher than those in control (P ＜ 0.05),and significant difference was noted among the comparable stages in the arms (P ＜ 0.05).The expression of APRIL mRNA and protein in TDI (treatment-demand-indicator) arm was significantly higher than those in non-TDI arm (P ＜ 0.05).Conclusions APRIL may be involved in the formation and development of B-CLL and be an influence factor for disease staging.Thus,APRIL may be a prognostic indicator as well as the therapy target for the disease.

Objective To investigate mRNA and protein expression of aproliferation-inducing ligand (APRIL) in peripheral blood mononuclear cell and plasma of patients with B cells non-Hodgkin lymphoma (B-NHL) pre- or post- chemotherapy and to explore the role of APRIL in the B-NHL. Methods The mRNA and protein expression of APRIL were detected by real-time fluorescence quantitative polymerase chain reaction (RFQ-PCR) and enzyme-linked immunosorbent assay(ELISA), respectively. According to the standard curves,the quantitative levels of target mRNA and protein were determined. Results The detection linear range of targeted mRNA by RFQ-PCR was 101-109 pg/ml, and the coefficient of variation values for both intra- and inter-experimental reproducibility ranged 1.69 %-5.99 % and 6.35 %-10.12 %, respectively. To detect expression of APRIL protein by ELISA, the correlation coefficient of standard curves reached 0.9922. Before or after chemical treatment, the expression levels of APRIL mRNA and protein in patients with B-NHL were significantly higher than those in normal control (P ＜0.01), while the expression levels in post-treatment patients with Ⅲ and Ⅳ stage were lower than those of pre-treatment patients with corresponding stage (P ＜0.05, respectively), but those of pre- and post-treatment patients with Ⅰ / Ⅱ stage were not different (P ＞0.05).Conclusion The expression level of APRIL mRNA is similar to that of APRIL protein. APRIL may be involved in pathogenesis and development of B-NHL. Moreover, APRIL may be related to the burden of B-NHL and it may be considered as a targeted molecule for B-NHL.

Objective To identify the spatial distribution of stray radiation from mobile CT head scanning for the purpose of radiation protection.Methods The head series of CareTom mobile CT were scanned and the radiation dose was measured using TLD (LiF:Mg,Cu,P).The isodose maps of radiation dose field were plotted using Matlab software.Results Radiation dose in the front of the mobile CT was slightly higher than that in the back.The maximum value of 0.255 mGy was found to be at 0.5 m from the scanning hole center.Conclusions The stray radiation dose from mobile CT head scanning was relatively low.However in order to avoid the damage to the operators and other medical workers from long-term low dose exposure,it should keep 2 m away from mobile CT,beside or behind,when in operation.

Objective To study the changes condition and clinical significance of serum cystatin C(Cys‐C) ,β2 microglobulin(β2‐MG) and retinol binding protein (RBP) detection in different stages of hemorrhagic fever with renal syndrome(HFRS) .Methods The levels of serum Cys‐C ,β2‐MG and RBP were detected in 22 patients with HFRS and 30 cases of healthy physical examination and the detection results were statistically analyzed by the SPSS13 .0 software .Results The serum Cys C and β2‐MG levels in every stage of HFRS were increased compared with the healthy control group(P< 0 .05) ,which in the oliguria stage was most significant (P< 0 .01) .RBP had no significant differences in the fever stage and shock stage compare with the healthy control group (P >0 .05) ,while RBP was significantly increased in the oliguria stage ,polyuria stage and convalescence stage(P< 0 .01) ,but no statisti‐cally significant differences among the three stage(P> 0 .05) .Conclusion β2‐MG is more sensitive than Cys‐C in the early stage of HFRS ;RBP has the clinical guidance significance in the progression of HFRS .

To investigate the inhibition of HBV expression by multi-target ribozyme-expressing adenovirus vector in vivo, the ribozyme and muta-ribozyme were cloned into adenovirus vector pAd-CMV. By using the adenovirus expression system, the two plasmids were co-transfected into 293 cell line with adenovirus gene recombinant plasmids pJM17. The recombinant adenovirus were detected by plaque assay. Then the recombinant adenovirus infected the 2.2.15 cells. Using ELISA, dot-bolt hybridization and image analysis system, the inhibition of HBV expression was detected. The ribozyme and muta-ribozyme were cloned into the adenovirus vector pAd-CMV. The recombinant adenovirus could infect 2.2.15 cells and express the ribozyme. The ribozyme could decrease the expression of HBeAg by 87.1%. All these results strongly indicate that ribozyme can inhibit HBV expression in the cell, which represents a potential gene therapy for HBV infection.

Objective To quantitatively analyze the mRNA expression level of lymphoid enhance factor 1 (LEF-1) in bone marrow mononuclear cells of patients with acute myeloid leukemia (AML) at intermediate-risk after initial diagnosis and chemotherapy, and to analyze its clinical significance. Methods The real-time fluorescence quantitative polymerase chain reaction (RT-PCR) was used to measure the expression level of LEF-1 gene in AML patients at intermediate-risk after initial diagnosis and chemotherapy, and its relationship with effectiveness and survival were analyzed. Results The LEF-1 mRNA level in preliminarily diagnosed patients with AML was significantly higher than that in control arm [0.00519 (0.00015-0.09207) vs. 0.00101 (0.00009-0.00233)], and the difference was statistically significant (u=134.50, P<0.01). The LEF-1 mRNA level in patients after chemotherapy was significantly declines as compared to that in patients before chemotherapy [0.00107 (0.00008 - 0.00744) vs. 0.00519 (0.00015 - 0.09207)], and the difference was statistically significant (u= 317.00, P< 0.01) and LEF-1 mRNA expression level before chemotherapy in complete remission (CR) patients was significantly higher than that in non-CR patients [(0.01108 (0.00164 - 0.09207) vs. 0.00110 (0.00015 - 0.00916)], and the difference was statistically significant (u=19.00, P<0.01). High LEF-1 expression predicted a significantly better overall survival in AML patients with intermediate-risk cytogenetics (χ2= 4.549, P= 0.033). Conclusions LEF-1 may be involved in the development and progression of AML at intermediate-risk patients and is closely related to tumor burden and treatment efficacy. LEF-1 may be a good predictor of better prognosis and a novel target for therapeutic effect.

Objective To investigate the effects of arsenic trioxide plus thalidomide on immune function of patients with myelodysplastic syndrome (MDS).Methods Fifty-seven MDS patients (Low risk,medium risk and high risk) and 30 healthy volunteers were selected as our subjects.Thirty-four cases with medium risk Ⅱ and high risk MDS patients were randomly divided into A and B groups.Seventeen MDS patients in A group were treated with arsenic trioxide plus thalidomide,and 17 MDS patients in B group were treated with low-dose cytarabine.Lymphocyte subsets in peripheral blood were examined by flow cytometry (FCM).The adverse effect of arsenic trioxide and thalidomide were recorded.Results Compared with control group,the number of T lymphocytes(CD3 +),B lymphocytes (CD3-CD19 +) and NK cell (CD3-(CD16 CD56) +) of patients with MDS were significantly lower,and the differences were statistically significant (t =2.157,2.349,2.958 ; P ＜ 0.05 or P ＜ 0.01).The helper CD3 + CD4 + T cell (Th) ratio decreased in MDS patients than that of control group (t =2.412,P ＜ 0.05).The inhibition CD3 + CD8 + T cells (Ts) ratio increased (t =2.749,P ＜ 0.01).Th/Ts ratio inversion was seen in MDS patients.As the progression of MDS increase,Ts cell expression gradually increased and NK cells ratio gradually decreased.However,there was no significant difference among three groups.Th cells and B lymphocytes in the risk group were lower than that in the low risk group,and the difference was statistically significant (F =4.896 and 4.516,P ＜0.05),but there was no significant difference in the terms of the number of T lymphocytes,Th cell,ratio of Th/Ts and B lymphocytes among MDS groups.Number of T lymphocytes,B lymphocytes and NK cell count in group A after treatment were increased than that before treatment (t =2.435,2.468,2.653,P ＜ 0.05).In group A,2 cases were complete remission,4 cases with partial remission,and 5 cases with hematologic improvement.The total effective rate was 64.71％ (11/17),and curative effect is obviously better than that of B group (x2 =4.253,P ＜ 0.05).Meanwhile adverse effect was mild.Conclusion The cellular and humoral immune function decreased in MDS patients.The treatment of arsenic trioxide plus thalidomide on MDS is proved safety and efficacy,which might work by improving immune function of MDS patients.

Objective To investigate the effect of recombinant human erythropoietin (rhEPO) in patients of hematologic malignancies with aneamia and its relationship of serum erythropoietin levels. Methods Serum EPO (sEPO) level in 80 patients with hematologic malignancies were detected by chemolumimiscence,and treated by recombinant human erythropoietin for patients with Hb<100 g/L. Results The effect on aneamia in tumor patients with remission were significantly higher than that with no-remission. The patients with lower level of sEPO had better respose to treatment by rhEPO than patients with higher level. Conclusion Higher level of sEPO in patients with no-remission hematopoietic tumor, with condition of marrow erythropoiesis aplasia, the effect of rhEPO was poor;, but sEPO level in patients with remission hematopoietic tumor were nearly normal with recovery of marrow erythropoiesis aplasia was effective by use of rhEPO.

Objective To investigate the feasibility and clinical value of anteroposterior and lateral scout scan combined with Care Dose 4D and Care kV in chest CT scan.Methods A total of 60 patients of clinical diagnosis with lung tumor were enrolled.Those patients were randomly divided into test group and control group.Control group underwent a scan protocol with lateral scout scan combined with Care Dose 4D and Care kV,while anteroposterior and lateral scout scan combined with Care Dose 4D and Care kV were performed in test group.The signal-to-noise ration (SNR),contrast-to-noise ratio (CNR),and overall image quality of two groups of images and diseased tissues were analyzed and evaluated by two high-grade radiologists using double-blind method.Effective doses (E) were also calculated.Results All the 60 patients had successfully completed the chest CT scans.Test group overall image quality (4.57 ± 0.45) and control group overall image quality (4.73 ± 0.45) had no statistically significant difference (P ＞ 0.05).The control group image SNR,CNR and diseased tissue SNR,CNR compared with test group had no statistical significance difference (P ＞ 0.05).The difference of the volume CT dose index (CTDIvol),dose-length product (DLP) and effective dose (E) of test group and control group was statistically significant (t =8.514,8.464,8.464,P ＜ 0.001).Compared with control group,the effective dose of test group decreased by 33.3％.Conclusions Compared with lateral scout scan,the technology of anteroposterior and lateral scout scan combined with Care Dose 4D and Care kV can decrease radiation dose without reducing the image quality.This technology can therefore be considered as a regular imaging modality for chest CT scan.

Objective:To compare the effects of transverse abdominis plane block and incision infiltration anesthesia on the early postoperative recovery in the patients undergoing thoracoscopic lung resection with general anesthesia.Methods:Eighty American Society of Anesthesiologists Physical Status classification Ⅱ or Ⅲ patients, regardless of gender, aged 50-78 yr, with body mass index of 18-30 kg/m 2, scheduled for elective thoracoscopic lung resection under general anesthesia, were divided into 2 groups ( n=40 each) using a random number table method: incision local infiltration group (group D) and transverse abdominis plane block group (group E). In group E, the patients were changed to the lateral position after completion of anesthesia induction, ultrasound-guided transverse abdominis plane block was performed on the affected side, with 0.25% ropivacaine hydrochloride 30 ml injected. In group D, infiltration anesthesia with 0.25% ropivacaine hydrochloride was performed before incision. Postoperative patient-controlled intravenous analgesia was carried out, and flurbiprofen axetil was intravenously injected for rescue analgesia when the numerical rating scale score at rest >3 or numerical rating scale score≥6 while coughing. Quality of Recovery-15 scale scores were assessed at 1 day before surgery and 24 and 48 h after surgery. Plasma concentrations of interleukin-6 (IL-6) and IL-1β were measured by enzyme-linked immunosorbent assay before incision, at the end of surgery, and at 24 h after surgery. The amount of remifentanil used during surgery, the number of effective pressing times of patient-controlled analgesia within 48 h after surgery, requirement for rescue analgesia, first ambulation time after surgery, time to first flatus, length of hospital stay, and occurrence of nausea and vomiting and pulmonary infection within 48 h after surgery were recorded. Results:Compared with group D, Quality of Recovery-15 scale scores were significantly increased, the amount of remifentanil used during surgery and the number of effective pressing times of patient-controlled analgesia were reduced, the rate of rescue analgesia was decreased, the time to first rescue analgesia was prolonged, and the time to first flatus was shortened in group E ( P<0.05). There were no significant differences in the plasma concentrations of IL-6 and IL-1β at various time points, time to first ambulation after surgery, length of hospital stay, and incidence of nausea and vomiting and pulmonary infection between the two groups ( P>0.05). Conclusions:Compared with incision infiltration anesthesia, transverse abdominis plane block can reduce intraoperative consumption of opioids, alleviate postoperative pain, and promote early postoperative recovery when used for thoracoscopic lung resection under general anesthesia.