Objective To discuss the relationship between diabetic macular edema(DME) and visual field defects and evaluatethe therapeutic effect of micro-pulse laser.Methods A total of 117 patients (149 eyes) with diabetic retinopathy(DR) were enrolled in this study and divided into two groups according to early treatment diabetic retinopathy study(ETDRS) DME diagnostic criteria:DME group(n=50,70 eyes) and N-DME group(n=67,79 eyes).Healthy subjects(n=40,80 eyes)were selected as NC group in thisstudy.The clinical data and biochemical index were collectedand visual fields were examined in all the subjects.Then the DME group was further divided into two subgroups:micro-pulse laser subgroup(35 eyes) and conventional laser subgroup(35 eyes).The vision recovery after treatment was evaluated on different time points.Results Diabetes duration,FPG,HbA1c and HOMA-IR were significantly higher in DME group than in N-DME group (P<0.05).RF value was less than 15% in each group,suggestingreliable test results.The levels of MD index[(7.81±0.75) vs (4.32±0.67) vs (1.14±0.22) dB],LV[(20.17±4.85) vs (15.34±3.19) vs (4.72±1.11) dB] and sLV[(10.71±1.37) vs (7.22±1.12) vs (2.35±0.41) dB] were significantly higher in DME group and N-DME group than in NC group,and those in DME group were higher than in N-DME group(P<0.01).After three month's treatment,the levels of MD index,LV and sLV were lower in micro-pulse laser subgroup than in conventional laser subgroup(P<0.05).There were no statistically significant difference in MD index,LV and sLV in conventional laser subgroup on different time points(P>0.05).Multiple logistic regression analysis showed that DM duration,FPG,HbA1c and HOMA-IR were riskfactors for DME(all P<0.01).Conclusion Patients with DME have severe vision loss.Micro-pulse laser therapy is helpful invision recovery,while conventional laser therapy have no obvious effect on it.Longer duration of DM,higher level of FPG,HbA1c,and IR severity may increase the risk of DME.

Objective To explore the ability of advanced oxidation protein products (AOPP)in predicting the progression of diabetic retinopathy (DR)in patients with type 2 diabetes mellitus (T2DM). Methods 363 T2DM patients were enrolled in this prospective cohort study. According to the quartile points of baseline AOPP level,patients were divided into four groups (Q1,Q2,Q3 and Q4 ). The progression rate of DR was calculated according to the changes of non-mydriatic fundus photography after a 5-year follow-up. Results With the increase of baseline AOPP level,the rate of progression of DR increased (19.51% vs 28.42% vs 37.36% vs 47.37%,P <0.01). Logistic regression analysis showed that baseline level of AOPP was an independent risk factor for the progression of DR (OR=1.833,95%CI:1.573~1.982,P<0.05).Area under the curve of AOPP in predicting DR is 0.883 (95% CI:0.842~0.924)with the sensitivity 86.1% and specificity 91.9%. Conclusion AOPP may be one of the biomarkers for the prediction of type 2 diabetic retinopathy progression.

Objective To analyze the MRI features of chordoid meningioma (CM),and to compare with other meningiomas. Methods Clinical and MRI features of 7 patients with CM confirmed by pathology were analyzed retrospectively.Featrues of every MRI sequence were investigated qualitatively.Meanwhile normalized signal ratios of each sequence were analyzed furtherly,including normalized T1 weighted image intensity ratios (NT1 ),normalized T2 weighted image intensity ratios(NT2 ),normalized ADC ratios (NADC)and normalized T1 WI contast enhancement intensity ratios (NCE).Fisher ’s exact test and Dunnett T 3 test were employed to analyze the difference of CM and nonchordoid meningiomas (34 cases of WHO grade Ⅰ meningioma,1 6 cases of nonchordoid WHO grade Ⅱ meningioma,and 5 case of WHO grade Ⅲ meningioma).Results The CM showed hyperintensity on T2 WI and meanwhile other nonchordoid meningiomas demonstrated isointensity,hypointensity or slight hyperintensity on T2 WI.Evaluations of DWI revealed variable signal intensities of CM.But all 7 cases had no obvious restricted diffusion,and increased signal was seen on the ADC map in each patient.The solid parts of CM enhanced markedly after contrast agent injection.Quantitative indicators NT2 , NADC and NCE of CM were higher than other meningiomas(P <0.01),but NT1 showed no statistic difference between CM and other meningiomas (P =0.889).Whether there was cyst,necrosis,orflow void sign on T2 WI,and no matter with or without perifocal edema,dural tail sign and a broader base among meningiomas had no significance in differentiating CM and other meningiomas.Conclusion CM has typical MRI features.The tumors show hyperintensity on T2 WI,especially have no obvious restricted diffusion and enhance markedly after contrast.The measurement of NT2 ,NADC and NCE enables reliable preoperative prediction of the atypical histopathologic diagnosis.

Female ; Humans ; Lymphoma ; diagnosis ; Pregnancy ; Pregnancy Complications, Neoplastic ; diagnosis

Objective:To investigate the wear resistance of four low-shrinkage commercial composite resins and two traditional composite resins in vitro and discuss the relative influencing factors, and to illustrate the inner relationship of the wear resistance of resins and material composition.Methods:Four low-shrinkage commercial composite resins including CLEARFIL MAJESTY Posterior(CMP), Filtek LS(LS), Admira(AD), Kalore(KA) and two traditional composite resins including Filtek Z350XT (Z350), Solitaire2(S2) were chosen.The bar-shaped specimens were fabricated and mounted in a UMT-2 wear testing machine and abraded with the two-body media (distilled water) with a Si3N4 ball as antagonist.The maximum wear depth was determined after 14 400 cycles.The friction coefficient was determined during the test.The worn surfaces were examined with SEM.Results:CMP showed the lowest maximum wear depth and KA presented the highest maximum wear depth.The maximum wear depth ranked as follows: CMP

To study the inhibitory effect of RNA interference (RNAi) on MMP-9 gene expression in THP-1 cell line.To investigate the application of RNAi on the therapy of leukemia.Methods:Small interfering RNA ( siRNA) for MMP-9 gene was designed and transfected into THP-1 cells.MMP-9 mRNA expression was assessed by RT-PCR, and MMP-9 protein expression was tested by Western blot.MTT and trypan blue staining were used to observe the effect on the proliferation of THP-1 cells after RNAi.The changes in cell morphology were observed under the microscope.Results:The expressions of MMP-9 mRNA and protein were inhibited in THP-1 MMP-9 siRNA-transfected cells ,significantly lower than those of control cells.The results of MTT and trypan blue staining in-dicated that the proliferation ability of THP-1 cells obviously decreased after siRNA-transfected 48h and 72h.The growth of cells was in-hibited and the cells survival rate was significantly lower than that of control group ( P<0.05 ).The cells of control groups grew semi-quote wall under inverted microscope.The outline of cells was clear and the shape was uniform.The cells grew vigorously.While the growth of cells in siRNA group was inhibited.The morphology of siRNA group cells changed obviously by the Wright staining.Most cells expressed changes of apoptosis.Conclusion: siRNA for MMP-9 gene can not only reduce the expressions of MMP-9 mRNA and protein,but also inhibit the proliferation and induce apoptosis of THP-1 cells.

Objective To study the predictive value for adverse cardiac events (ACE) of left ventricular diastolic function measured by G-MPI. Methods Patients assessed by 2 days rest-stressed G-MPI during March 2012 to May 2013 in Beijing Hospital were collected and observed for the cumulative survival rate without ACE after G-MPI. ACE included cardiac death, non-fatal MI and late revascularization (60 d after the examination). Using quantitative gated SPECT (QGS) to get the LVEF and left ventricular peak filling rate (PFR). Using 17 segments, 5-point scoring system to get the summed stress score (SSS). Cox regression analysis was used to identify the independent predictors for ACE, and Kaplan-Meier method was used to investigate the cumulative survival rate without ACE.χ2 test was also used. Results A total of 11 patients who underwent early revascularization (within 60 d after G-MPI) were excluded and 139 patients (76 males, 63 females; average age 68.73 years) were assigned to different groups for outcome analysis, and 9 (6.5%, 9/139) patients had ACE in the whole group. Cox regression analysis showed that SSS, LVEF, PFR were the independent predictors for ACE (all P<0.05). Patients with PFR<2.1 EDV/s had a higher incidence of ACE than those with PFR≥2.1 EDV/s (14.3%(7/49) vs 2.2%(2/90), χ2=7.63, P<0.05). Kaplan-Meier survival analysis showed that the cumulative survival rate without ACE was lower in patients with PFR<2.1 EDV/s than that in patients with PFR≥2.1 EDV/s (67.7% vs 95.0%), and lower in patients with LVEF<50% than that in patients with LVEF≥50%(32.0% vs 90.8%), and also lower in patients with SSS≥8 than those with SSS<8(62.0% vs 94.7%; χ2 values: 11.92,11.27, 10.40, all P<0.01).Combining PFR with SSS and LVEF respectively, Kaplan-Meier survival analysis showed that the cumulative survival rate without ACE in patients with LVEF≥50% was higher than that in patients with LVEF<50% when PFR<2.1 EDV/s (76.7% vs 30.8%), and also higher in patients with SSS<8 than that in patients with SSS≥8 when PFR≥2.1 EDV/s (100% vs 72.2%; χ2 values: 7.14, 13.09, both P<0.01). Conclusion PFR of left ventricular diastolic function measured by G-MPI is one of the independent predictors for ACE, and it could effectively improve the predictive value for ACE if combined with LVEF and SSS.

Objective To examine the status of self-perceived burden in patients with continuous ambulatory peritoneal dialysis and explore the relationships among social support,coping styles and self-perceived burden.Methods 103 elderly patients with peritoneal dialysis of outpatient follow-up were recruited.They were investigated using Self-Perceived Burden Scale,Social Support Rating Scale,and Simplified Coping Style Questionnaire.Results The total score of self-perceived burden was at a moderate level and the average score was (36.67±3.67).The total score of social support,the average score of positive coping and negative coping were (40.27±5.83),(1.69±0.26),(1.80±0.40),then the difference was statistically significant when compared with domestic norm (34.56±3.73),(1.78±0.52),(1.59±0.66) (P＜0.05).The analysis found that self-perceived burden was negatively correlated with positive coping styles,social support and each dimension (r =-0.239,-0.668,-0.725,-0.252,-0.647,P＜0.05).Conclusions Medical personnel should inspire elderly patients to make full use of social resources and guide them to take positive attitude to deal with dialysis event.It would help them maintain well psychological condition for a long time and reduce the self-perceived burden of patients.

Objective:The occurrence of numerous tumors, particularly classical Hodgkin's lymphoma (CHL), is related with Ep-stein-Barr virus (EBV) infection. However, the incidence of CHL and its association with EBV varies significantly with ethnicity, geo-graphic location, sex, and age. This study investigated the association of EBV infection with CHL in Northern Chinese Han population. Methods:EBV-encoded small RNA (EBER) was detected in 136 cases of CHL through in situ hybridization. Results:A total of 37 cas-es were EBER positive (28%). The mixed cellularity (MC) subtype had the highest positive EBER rate of 49%(23/47;P<0.001), fol-lowed by lymphocyte-rich subtype with 30%(3/10), nodular sclerosis (NS) subtype with 14%(10/73), and 1ymphocyte depletion with 0%(0/2). Our study identified a single age distribution in the third decade. Moreover, NS subtype showed an evident single peak in the third decade. However, MC subtype had a lower peak in the fifth decade. The incidence of EBER showed a bimodal age distribution with two peaks in the first and fifth decades (21.6%and 24.3%, respectively). Conclusion:CHL in Northern Chinese Han population was associated with EBV infection, particularly the MC subtype.

Objective To explore the role of basic leucine zipper ATF-like transcription factor (BATF) in active tuberculosis, and to provide clues for diagnosis and therapy of tuberculosis.Methods Sixteen patients with active tuberculosis (ATB), ten cases of latent tuberculosis infection (LTBI) and fourteen healthy controls (HC) were included in this study.Flow cytometry was applied to detect the expressions of BATF and programmed death-1 (PD-1) in T lymphocytes, and the changes of BATF by blockade of PD-1/PD-L pathway using specific blocking antibody antiPD-1, antiPD-L1 and antiPD-L2.The expressions of BATF were compared using Mann-Whitney U test.And the relation of BATF and PD-1 was analyzed using Pearson correlation analysis.Results The CD4+ T lymphocytes expressing BATF accounted for 5.16% (2.96%,8.71%) of CD4+ T lymphocytes in ATB group, which was higher than 1.05% (0.40%,1.27%) in LTBI group and 0.71%(0.43%,1.21%) in HC group, and the difference were statistically significant (U value were 6.5 and 9.0, respectively, both P<0.01).The CD8+ T lymphocytes expressing BATF accounted for 4.10% (2.27%,8.17%) of CD8+ T lymphocytes in ATB group, which was higher than 0.55% (0.34%,1.18%) in LTBI group and 0.84% (0.41%,1.29%) in HC group, and the difference were statistically significant (U value were 5.0 and 8.0, respectively, both P<0.01).Furthermore, the percentage of BATF+ PD-1+ CD4+ T lymphocytes in the peripheral blood of ATB was significantly higher than those in the peripheral blood of LTBI and HC, the difference were statistically significant (Uvalue were 16.0 and 14.5, respectively, both P<0.01), and the percentage of BATF+ PD-1+ CD8+ T lymphocytes in the peripheral blood of ATB was significantly higher than those in the peripheral blood of LTBI and HC, the difference were statistically significant (Uvalue were 10.0 and 16.5, respectively, both P<0.01).In addition, there was a positive correlation between the percentage of BATF+ T cells and PD-1+ T cells, both in CD4+ T cells (r=0.676,P=0.016) and CD8+ T cells (r=0.610,P=0.035).The expressions of BATF both in CD4+ T cells and CD8+ T cells were decreased followed by blockade of PD-1/PD-L pathway (P<0.05).Conclusions BATF may be involved in the regulation of immune pathogenesis of tuberculosis.In order to provide a theory for anti-tuberculosis immunotherapy fargeting BATF, further research need to be proceeded.