Objective:To evaluate the inhibitory effect of Small interferirng RNA(siRNA) on human papilloma vinus(HPV)16 E6 oncogenes in nasopharyngeal carcinoma(NPC) cell line HNE-1,and observe the effects of HPV16 E6 silencing on NPC cell growth.Methods:Four siRNA against the HPV16 E6 gene were designed and transfected into HNE-1 cell respectively using RNAi-Mate transfection reagent.MTT was used to investigate the cellular proliferation after the transfection.RT-PCR was used to detect the expression of HPV16 E6 and protein level of HPV16 E6 was measured by Immunohistochemical staining.Results:After the most effective siRNA was transfected into HNE-1cell,the result of MTT indicated that the cellular proliferation was restrained remarkably,and the highest inhibitory rate was 32%.Meanwhile,RT-PCR and immunohistochemical staining showed that there was a significant decrease in HPV16 E6 mRNA and protein level.Conclusion:These results demonstrated that siRNA against HPV16 E6 could effectively downregulate HPV16 E6 expression in HNE-1 cell line,and inhibit the cellular proliferation.RNAi has great potential in the treatment of nasopharyngeal carcinoma as a new gene therapy.

Bone marrow mesenchymal stem cells (BMSCs) are multipotent nonhematopoietic progenitor cells capable of differentiating into multiple lineages, such as bone, fat, and cartilage. BMSCs preferentially home to the damaged tissue and are beneficial to tissue repair. In vitro studies have shown that they do not induce immune response and can inhibit immune cells involved in alloantigen recognition and elimination. In animal models, BMSCs have been shown to induce peripheral tolerance and migrate to injured tissues, where they can inhibit the release of pro-inflammatory cytokines and promote the survival of damaged cells. The unique properties of MSCs suggest a role in cell therapy and treatment of immunomediated diseases.

Competing endogenous RNA (ceRNA) is a class of RNA which includes mRNA,pseudogenes,long non-coding RNA (lncRNA),circular RNA (circRNA).ceRNA weakens its inhibitory effect on mRNA translation through competitive binding with shared microRNA (miRNA).Many studies have confirmed that the disorder of ceRNA is closely related to the occur-ence of breast cancer,gastric cancer,lymphoma and other tumors.With the improvement of researches,ceRNA may be used as a tumor marker of clinical diagnosis and therapeutic target.

Bone marrow microenvironment is a complex network consisting of hematopoietic stem/pro-genitor cells (HSPCs),non-hematopoietic cells,extracellular matrix and various cytokines.Its components interact to support normal hematopoiesis.Emerging evidence indicates that the dysfunction of mesenchymal stem cells,myeloid-derived suppressor cells,cytokines and the epigenetic alterations of HSPCs in the bone marrow microenvironment could influence normal hematopoiesis.Abnormal hematopoiesis contributes to the occurrence of hematological malignancies,such as myelodysplastic syndromes (MDS).Animal models have confirmed that bone marrow microenvironment plays an important role in the original generation and maintenance of malignant diseases of hematopoietic system.

Objective To elucidate the MRI appearance of prostatic abscess,the DWI and enhanced MRI features.Methods 12 cases of prostatic abscesses were retrospectively analyzed,the clinical symptom mainly manifested as lower urinary tract symptoms and fever.All of the patients were given routine MR examination including DWI sequence,6 patients received further enhanced MR examination.Results In the 12 cases,there were 4 cases behaved as single type,8 cases as multifocal type.The abscess showed iso-or slightly hypo-signal intensity on T1 WI,hyper-signal intensity on T2 WI,markedly high signal intensity on DWI and correspond-ing markedly low signal intensity on ADC.Complete abscess walls showed iso-or slightly hyper signal on T1 WI,hypo-signal inten-sity on T2 WI.The mature abscess walls were thin and smooth,which showed homogeneously ring enhanced in 4 cases.The imma-ture abscess walls showed uneven thickness and moderately enhanced in 2 cases.Septum in the abscess could be found in 4 cases, which showed similar enhancement to the abscess walls,while the abscess cavity showed non-enhanced.Abscesses involved the sur-rounding structures in 2 cases,the involved area showed obvious hyper-signal on T2 WI fat-suppression sequence.Conclusion DWI is the best sequence in the diagnosis of prostatic abscess,the markedly high signal intensity on DWI is the characteristic sign.The enhanced MRI showed the walls and septa clearly,the extent and involvement of adjacent structures.The multi-parametric MRI is a prominent procedure in the diagnosis of prostatic abcess.

Sepsis-induced cardiomyopathy(SICM)is a reversible cardiac insufficiency in the early stage of sepsis, and mainly manifests as left ventricular dilation, decreased ejection fraction, and recovery within 7~10 days.Although it is reversible, the incidence and mortality in sepsis are high.The specific mechanism is still unclear.Inflammatory reaction, mitochondrial dysfunction, apoptosis and other pathophysiological processes play an important role.Its process is complex and involves the interaction between organism and pathogen.The management of SICM is still based on the etiologic treatment of septic shock guided by hemodynamic monitoring and tissue perfusion, with cardio-protective therapy and specific measures.This review summarizes the literatures on the mechanisms and treatments of SICM.

Aim To investigate the effect of α1-anti-trypsin Z variant (ATZ)overexpression on cell autoph-agy.Methods HEK 293T cells were transfected with pcDNA3.1 zeo+/ATM or pcDNA3.1 zeo+/ATZ,e-qual amount of empty vector was used as control.Cells were treated with NH4Cl for 4 hours and processed for detecting ATZ,LC3 and p62 by immunoblot.Mean-while ,expression and intracellular localization of ATZ, LC3 in 293 T cells were observed with double labeled immunofluorescence.The mRNA levels of autophagy-related genes were measured by real-time PCR.Immu-nohistochemistry was used to observe the morphology of ATZ-positive cells.Results Compared with the control,higher LC3Ⅱ levels and LC3 puncta were observed in ATZ transfected cells.Meanwhile,the levelsof p62 were decreased in ATZ transfected cells,andreversed by NH4 Cl (25 mmol·L -1 )treatment.Overexpression of ATZ increased the mRNA levels of Atg5and Atg12,but had no obvious influence on Beclin1.ATZoverexpressing cells presented abnormal morphologies.The nuclei became reduced,condensed,and even disappeared in ATZpositive cells.Conclusion ATZ overexpression increases autophagy activity whichmay be related to increasing Atg5 and Atg12 levels.

ObjectiveTo evaluate the value of early secretory antigenic target 6 (ESAT-6) in monocytes of cerebrospinal fluid (CSF) in the early diagnosis and judgment of the tuberculous meningitis (TBM). MethodsForty cases with TBM (TBM group) and 40 patients with other meningitis patients (control group,9 cases with purulent meningitis,24 cases with viral meningitis,3 cases with cryptococcal meningitis,3 cases with cerebral cysticercosis, 1 case with neurosyphyilis) were involved in this study.Conventional examination of CSF was inspected after admission, and the ESAT-6 in monocytes of CSF was detected by immunocytochemical stain. ResultsThe positive rate of ESAT-6 was 24％ in TBM group and 0 in control group (P ＜ 0.01 ). In ROC curve, if the rate of ESAT-6 ≥8.5％ judged as positive, and ＜ 8.5％ judged as negative, 35 patients of TBM group and 4 patients of control group were ESAT-6 positive. The sensitivity of the ESAT-6 in the diagnosis of TBM was 87.5％, and the specificity of TBM was 90.0％. Thirty patients in TBM group were not given anti-tuberculosis drug treatment, and the positive rate of ESAT-6 was 93.3％ (28/30) before treatment, and was 46.7％ (14/30) after treatment of 2 weeks (P =0.000).ConclusionsESAT-6 in monocytes of CSF detected by immunocytochemical stain has higher sensitivity and specificity in the diagnosis of TBM in early stage. Observing the positive rate of ESAT-6 dynamicly has practical value in judgment the severity of TBM.

Objective To investigate the relationships of pulmonary arterial pressure (PAP) with serum protein S100B, cytokines and plasma procalcitonin (PCT) in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Methods A prospective controlled study was conducted, 160 subjects admitted in the Critical Care Medicine and Respiratory Disease Departments in the Affiliated Hospital of Shanxi Medical University/Changzhi Municipal People's Hospital from January 2012 to August 2013 were enrolled in the study, including 80 patients with AECOPD (AECOPD group) and 80 COPD under stable condition (SCOPD group). Meanwhile 100 healthy people having passed physical examinations were chosen as healthy control group. The levels of blood routine and plasma PCT were examined, PAP was evaluated by modified Simpson, sequation with echocardiography, serum S100B was measured by radioimmunoassay, and enzyme linked immunosorbent assay (ELISA) was used to measure interleukins (IL-18, IL-1β) and tumor necrosis factor-α(TNF-α). The linear correlation analysis was carried out for the various indicators. Results The gender and age in different groups were matched. Compared with the healthy control group, the levels of white blood cell count (WBC), ratio of neutrophil granulocyte (PMN), PAP, PCT and S100B, IL-18, IL-1β, and TNF-αwere significantly higher in SCOPD and AECOPD groups [WBC (×109/L):0.84±0.22, 1.94±0.64 vs. 0.73±0.12, PMN: 0.70±0.09, 0.85±0.08 vs. 0.54±0.05, PAP (mmHg, 1 mmHg = 0.133 kPa): 39±5, 47±8 vs. 24±5, PCT (μg/L): 0.41±0.08, 6.35±2.14 vs. 0.11±0.01, S100B (μg/L): 0.081±0.017, 0.101±0.028 vs. 0.041±0.011, IL-18 (ng/L): 162±19, 181±27 vs. 112±19, IL-1β(ng/L): 55±12, 75±14 vs. 34±10, TNF-α(ng/L):67±17, 89±18 vs. 35±17, all P<0.05], and the increase in level of indexes was more significant in AECOPD group than that in the SCOPD group (all P < 0.01). Serum S100B was significantly positively correlated with PCT, IL-18, PMN and PAP (r value was 0.36, 0.41, 0.39, 0.35, all P<0.05), and plasma PCT was also significantly positively correlated with PMN and PAP (r value was 0.41, 0.37, both P<0.05). Conclusion The level of serum S100B might have positive obvious correlation to the changes of plasma PCT, cytokines and PAP.

Objective To investigate the efficacy and outcome in newly diagnosed multiple myeloma (MM) patients with renal insufficiency using bortezomib-or thalidomide-based regimens as front line treatment.Method Sixty-nine newly diagnosed MM patients with renal insufficiency were retrospectively analyzed from August 2006 to August 2014.Results ① Among thirty-nine patients with bortezomib based regimens (the bortezomib group),the overall response rate (ORR) was 89.7％ and complete response (CR) plus near CR(nCR) rate was 41.0％.By contrast,among thirty patients with thalidomide based regimens (the thalidomide group),the ORR was 83.3％ and CR + nCR rate was 26.7％.There was no significant difference of either ORR or CR + nCR rate between bortezomib and thalidomide groups.② The improvement rate of renal function in bortezomib group and thalidomide group were 87.2％ and 60.0％respectively (P =0.012).The median duration time of renal injury was 45 days in 52 patients with renal function improved,which was significantly shorter compared with 222 days in 17 patients without improvement (P ＜ 0.05).There was no difference of median serum creatinine and creatinine clearance rate between the two groups.③ The median progression-free survival (PFS) and the overall survival (OS) were 18 and 33.5 months,respectively in all patients.The three-year and five-year OS rates were 57％ and 17％,respectively.The median PFS was 19 months in bortezomib group,while it was only 12 months in thalidomide group (P =0.023).The median OS were 36.5 months and 25.5 months respectively,which was no difference (P =0.285).Conclusions The newly diagnosed MM patients with renal insufficiency could get higher ORR and the longer PFS using bortezomib-containing regimens as initial therapy.Meanwhile the improvement rate of renal function and the living quality in patients with bortezomib are better compared with those with thalidomide based treatment.