Objective To set up a real-time quantitative assay method of insertion sequence 6110 DNA of mycobacterium tuberculosis, and explore its value for diagnosing tuberculosis. Methods Real-time quantitative assay of insertion sequence 6110 DNA of mycobacterium tuberculosis was performed with Taqman technique and Lightcycler quantitative PCR system. Results 213 clinical samples of different types were detected, 32 cases were positive, and the positive rate was 15 02%. The scope of quantitative results of positive samples was 3 1～7 2?10 6 copies/ml, and the sensitivity and specificity for diagnosis of tuberculosis were 82 76% and 95 65% respectively Conclusion Real-time quantitative assay of insertion sequence 6110 DNA of mycobacterium tuberculosis is a rapid and effective method for diagnosis of tuberculosis.

Objective To study the application of the linear sampling method(LSM) in 2D electromagnetic inverse scattering imaging and to mainly discuss the imaging quality of LSM with partial-view data.Methods Get the norm of solution vector to the equivalent integral equation using numerical calculation in every sampling point at imaging region,and represent the norm with gray to reconstruct the scattering shape.Results Under all incident angles [0,360?] and all observation angles [0,360?],the imaging quality of the far-field pattern of scattering wave was obtained very well.But when reducing the range of the incident angles and observation angles,the imaging quality declined.Particularly,the imaging quality in the case of both incident angles and observation angles being at the same side of the observed object,were much better than both in opposite sides.Furthermore,the profile of the object was imaged more clearly as its position corresponding to the orientation of the incident/observation angle.Conclusion Although the imaging quality will decline with partial-view data in electromagnetic inverse scattering,the effectiveness of imaging with LSM still deserves attention.

According to the teaching situation,associated with common problems which influence paper quality,we discussed how to control students' paper quality on preventive medicine,such as adopting strict defense procedure,making score standard of defense,and so on.

0.05).There are significant statistical differences in NIHSS(91.3% vs 71.3%)and BI(93.8% vs 75.0%)between two groups af- ter treatment(P0.05). Conclusion Multidisciplinary integrated treatment mode is an effective treat ment for stoke.

OBJECTIVE: To explore the effects of psoralen (PSO) plus long-wave ultraviolet-A (PUVA) on apoptosis and expression of Fas ligand (FasL) in HL-60 leukemia cells. METHODS: The HL-60 cells were taken as the study objects and their apoptosis rates, ultrastructure changes and the expression of FasL were detected in order to observe the effects of PSO and ultraviolet-A (UVA) of wave length 360 nm. The factorial design and analysis of variance were used to analyze the interaction among the factors. RESULTS: PSO, UVA and PUVA all induced the apoptosis and the effects of PUVA were stronger than those of the other two. After HL-60 cells had been treated with PUVA, they all showed obvious ultrastructure changes due to apoptosis observed under the electron microscope. PSO, UVA and PUVA all decreased the expressions of FasL gene and protein. The effects of PUVA were stronger than those of the other two. CONCLUSIONS: PUVA can induce the apoptosis of HL-60 cells and the effects are stronger than those of PSO or UVA alone. The expression of FasL gene in HL-60 cells is down-regulated during the apoptosis induced by PUVA.

AIM: To evaluate the efficacy of vitrectomy and pan-retinal photocoagulation followed with Ahmed implantation in management of neovascular glaucoma ( NVG) retrospectively.
METHODS: Vitrectomy combined with pan retinal photocoagulation and Ahmed implantation was performed on 15 cases ( 15 eyes ) with NVG. All patients were followed up for 12 ~ 36mo. The change of intraocular pressure (IOP), visual acuity, neovascularization of iris, complications were observed.
RESULTS: The visual acuity of 10 eyes was improved postoperative. IOP of postoperative 1, 6 and 12mo were decreased significantly compared with preoperative ( P<0.01 ) . Neovascularization of iris was reduced dramatically. No serious complications occurred.
CONCLUSION: Vitrectomy combined with pan retinal photocoagulation followed Ahmed implantation can manage NVG effectively.

Objective:To access the benefits and harms of remote ischemic preconditioning(RIPC) in patients undergoing cardiac surgery with cardiopulmonary bypass.Methods:An electronic and manual search of literature published before Mar 2020 was conducted using Pubmed, EMBASE, Cochrane Library for randomized controlled trials(RCTs), CNKI, CBM, WanFang and VIP. 23 studies involving in 5 025 participants were included. Patients were randomly assigned to either remote ischemic preconditioning group(n=2 524) or control group(n=2 521). Remote ischemic preconditioning consisted of 3-4 cycles of lower limbs or upper limbs ischemia and reperfusion with an automated cuff inflator. Clinical data and the levels of injury biomarkers were collected. The main outcomes were the incidence of adverse events, mortality in the hospital, and the post-operative troponin concentration. The effective values of dichotomous variables or continuous variables were estimated by Relative risk( RR) or by mean differences( MD), standardized mean differences( SMD) with 95% confidence intervals( CI) respectively. Results:In general risk of bias varied from low to moderate risk of bias across included studies, and insufficient detail was provided to inform judgement in several cases. There were no significant differences between the two groups with regard to all-cause mortality in hospital( RR=1.27, 95% CI: 0.84-1.91, P=0.26), no-fatal myocardial infarction( RR=0.92, 95% CI: 0.79-1.07, P=0.27) , new stroke( RR=0.96, 95% CI: 0.61-1.50, P=0.84), new atrial fibrillation( RR=0.98, 95% CI: 0.83-1.15, P=0.77) and acute renal failure( RR=1.01, 95% CI: 0.90-1.14, P=0.83). Conclusion:There is no evidence that RIPC has a treatment effect on clinical outcomes(measured as all-cause mortality in hospital, no-fatal myocardial infarction, new stroke, new atrial fibrillation, and acute renal failure). More research should be designed to confirm the effect of RIPC on myocardial protection with cardiopulmonary bypass.

Objective To explore the value of brainstem auditory evoked potential(BAEP),visual evoked potential(VEP)and Revised Visual Retention Test(VRT)in detecting impairment of central nervous system in patients with acute leukemia(AL).Methods Neuropack-Ml type evoked potential machine(Japan)was used to check brainstem auditory evoked potential(BAEP)and visual evoked potential(VEP).BAEP,VEP and VRT were examined in 30 cases with acute leukemia(group AL)and in 30 age and sex matched healthy subjects as a control(groupC).Indexes of BAEP including peak latency(PL)of waves I ,IB ,V and inter-peak latency(IPL)of waves Ⅰ～Ⅲ,Ⅲ ～Ⅴ,Ⅰ～Ⅴand indexes of VEP(P100PL)were determined.VRT was accomplished meanwhile applying B method with C pattern,C method with D pattern,D method with E pattern.The correct scores and error scores were recorded separately.Results BAEP:the abnormal rate of the group AL was 23.3 %.Compared with control group,we found significant longer latency of wave Ⅲ、Ⅴ(P＜0.05)and significant elongation in the mean inter-peak latencies of Ⅰ～Ⅴ(P＜0.05).VEP:the abnormal rate of the group AL was 26.7% ,the P100 PL of the patients was longer than that in the control group(P＜0.05).VRT:the abnormal rate of the group AL was 33.3%.The results of VRT showed that the score in the group AL in D method with E pattern was lower than that in the control group(P＜0.05).Conclusion BEAP,VEP and VRT could detect the impairment of central nervous system in patients with acute leukemia sensitively,and give clues to early diagnosis of central nervous system leukemia(CNSL).

Objective To study whether ORF3 coded by fap1-orf4 gene locus of Streptococcus pa-rasanguis is involved in the regulation of Fap1 glycosylation and maturation and to investigate whether ORF3 influences Streptococcus parasanguis adhesion. Methods A gene replacement strategy was adapted to con-struct orf3 alleic replace mutant of Streptococcus parasanguis. Complementation assay and Western blot were used to test Fap1 expression levels. Whole saliva-coated hydroxyapatite (SHA) adhesion assay was adapted to determine Streptococcus parasanguis adhension. Results (1) Non-polar was found in strain VT1774, the orf3 alleic replace mutant of Streptococcus parasanguis. (2) Western blot showed that mature Fapl (Mr about 220 × 103) disappeared and were substituted with high molecular weight Fapl (Mr about 470 × 103) in strain VT1774, furthermore, complementation assay showed VT1775, the complementation strain of VT1774, re-stored mature Fapl expression. (3) The binding ability reduced significantly in strain VT1774. Conclusion ORF3 coded byfapl-orf4 gone locus was required for Fap1 glycosylation and maturation in Streptococcus pa-rasanguis, orf3 alleic replacment resulted in Fap1 glycosylation and mature disorder and decreasing of adhen-sion ability of Streptococcus parasanguis.

Objective To investigate whether glucosyltransfernse(GTF) and open reading frame 4 (ORF4) coded by fap1-orf4 gene locus of Streptococcus parasanguis was involved in the regulation of Fap1 glycosylation, and mature and to determine whether there was interaction between GTF and ORF4. Methods A gene replacement strategy was adapted to construct gtf and orf4 allele replace mutant of S. Parasanguis. Complementation assay and Western blot were used to test fap1 expression levels. Yeast two-hybrid analysis and GST pull down assays were adapted to determine the interaction between GTF and ORF4. Results (1) Compared with wild S. Parasanguis, mature Fapl (Mr about 220×103) disappeared and were substituted with high molecular weight Fapl (Mr about 360×103) in gtf or orf4 alleie replace mutants of S. Parasan-guis. Complementation assay showed that pVPT-GFP-gtf and pVPT-GFP-orf4 restored mature fap1 expression in gtf or orf4 alleie replace mutants, respectively. (2) With Yeast two-hybrid analysis, the eotransformants, AH109/pAD-Gtf+pBD-orf4 and AHlOg/pAD-orf4+pBD-gtf growed on SD-LTHA selective ngar plate after streaked, reversely, the eotransformants, AH109/pAD+pBD-orf4,AH109/pAD+pBD-gtf、AH109/pBD+ pAD-orf4、AH109/pBD+pAD-gtf did not grow on SD-LTHA selective agar plate, furthermore, the cotrans-formants, AH109/pAD+pBD-orf4 and AH109/pAD-orf4+pBD-gtfshowed blue during X-α-gal assay. (3) GST pull down assay confirmed the direct interaction between GTF and ORF4. Conclusion There is inter-action between GTF and ORF4 coded byfapl-orf4 gene locus of S. Parasangnis and the formation of the GTF and ORF4 complex was required for the glycosylation and mature of Fapl in S. Parasanguis.