Objective To investigate the distribution and clinical significance of D‐Dimer positive patients .Methods 1 003 D‐di‐mer positive patients were enrolled in the study ,which were measured by latex enhanced immune turbidimetry .Results The total positive rate of ICU ,cardiology ,respiratory medicine ,orthopedics ,general surgery ,liver disease ,neurosurgery ,obstetrics and gyne‐cology ,oncology departments was 44 .1% .The numbers of D‐dimer positive patients with diffuse intravascular coagulation ,deep vein thrombosis ,pulmonary embolism ,heart cerebrovascular disease ,liver disease ,malignant tumor were 86 ,34 ,26 ,24 ,18 and 12 , respectively .Conclusion The determination of plasma D‐dimer could be used in thrombotic disease prevention and monitoring .

Objective:To explore the brain function asymmetry characters of the patients with major depressive disorder (MDD).Methods:The study examined the ear advantage of 58 healthy subjects, 115 patients with MDD using two kinds of rhyming words by the method of focused attention. Results:1.In healthy group, no ear advantage was found in true words test, but appeared significant right ear (left-hemisphere) advantage in pseudo-words test. 2.In MDD group, there was also no ear advantage in true words test, but appeared enhanced right ear (left-hemisphere) advantage in pseudo-words test. There was a significant difference between the MDD and healthy subjects. Among patient group, 3. by true words test, no ear advantage was found in those with a comorbid anxiety disorder, but those without comorbid anxiety appeared right ear advantage. By pseudo-word test, both patients with or without comorbid anxiety appeared right ear (left-hemisphere) advantage, and those without had larger advantage. there was a significant difference between this two groups. 4.HAMD, HAMA and SCL-90 ratings had no relation to asymmetry scores of true words or that of pseudo-words.Conclusions:1. both healthy control and MDD patients have no ear advantage for process and cognition of true words in, but as for that of pseudo-words, both of them appear right ear (left-hemisphere) advantage, with the MDD patients have greater advantage. 2.The patients with or without a comorbid anxiety disorder were different in response, patients with comorbid anxiety appear more close to normal control. 4. Asymmetry scores don’t correlate significantly with the scores of HAMD, HAMA or SCL-90. 5.The pseudo-words is the better choice as stimuli for dichotic listening test.

Objective To design a radiotherapy information system with high statistical function.Methods The whole system included foreground workstation and background database server system.The software of foreground workstation was developed under Visual C#.NET,and SQL Server 2005 was accessed by using ADO.NET.Results Radiotherapy Information System could provide basic information,diagnosis information,therapy information and follow-up information.Conclusion With Radiotherapy Information System,the management of radiotherapy information becomes more systematic and standardized.

Objective To investigate the effects of 5-Aza-2′-deoxycytidine (5-Aza-Cde)on DNA methylation and expression of hMLH1 and MGMT gene in the human lung cancer cell line A549/DDP.Methods A549/DDP cells were cultured with RPMI 1 640 medium and were treated with 5 μmol/L DNA methyhransferase inhibitor 5-Aza-Cde.Methylation-specific pol-ymerase chain reaetioll (MSP)was used to detect the promoter methylation state of the hMLH1 and MGMT gene.RT-PCR was used to detect the mRNA expression of hMLH1 and MGMT before and after treatment with 5-Aza-Cde,respectively. Results Before treatment with 5-Aza-Cde,hMLH1 and MGMT expressions were absent,and promoter hypermethylation of the hMLH1 and MGMT gene were detected in A549 cells.After treatment with 5-Aza-Cde,the promoter region of the hM-LH1 and MGMT gene exhibited a demethylation state,and their mRNA expressions were increased.Conclusion Promoter hypermethyhtion is amajor mechanism of hMLH1 and MGMT gene silencing in human lung cancer cells,and can be reversed by the demethylating agent 5-Aza-Cde,which can regulate the expressions of the hMLH1 and MGMT gene.

Objective To detect the expression of p16 and discuss the significance in genesis and development of cervical cancer. Methods FQ-PCR method was used to detect the expression levels of p16 mRNA in cervical cancer(CC),cervical intraepithelial neoplasia(CIN),and normal tissues.And in situ hybridization was used to detect HR-HPV in these tissues.Results The expres-sion levels of p16 were 0.79±0.34,0.70±0.36,0.26±0.21 in CC,CIN and normal cervical tissues,respectively.The difference was significant (P <0.05).The expression level of p16 was significantly associated with FIGO stage (P <0.05),but it showed no significant relationship with age,tumor size,cell differential degree and lymphoid node metastasis (P >0.05).The expression level of p16 in HR-HPV positive cases was significantly higher than that in HR-HPV negative cases (P <0.05).Conclusion p16 shows high expression level in cervical cancer,which is closely related to the infection of HR-HPV infection.It suggests that the high ex-pression of p16 play an important role in genesis and development of cervical cancer.

A method was developed for the simultaneous determination of 17 characteristic ingredients of plant extracts, including paeoniflorin, hydroxysafflor yellow A, calycosin_7_glucoside ferulic acid, etc. , in hair growth cosmetics using ultra high performance liquid chromatography ( UPLC ) . Different cosmetic samples were extracted by ultrasonic_assisted extraction with the solvent of methanol/water (4∶1, V/V) solution. After demulsified by the addition of appropriate amount of NaCl and high speed centrifugation, the supernatant was transferred and analyzed with UPLC. The separation was conducted on a Waters reversed phase column of ACQUITY UPLC CSH C18(50 mm×2. 1 mm, 1. 7μm), and the mobile phases were methanol and the solution of 0. 05% phosphate in water. The detection was performed with a photodiode_array ( PDA) detector. The linear range was 0 . 2-25 mg/L with correlation coefficients higher than 0 . 999 . The limits of detection were within 0. 3-1. 5 mg/kg, and the limits of quantification were from 1. 0 to 4. 0 mg/kg. The average recoveries of 17 characteristic ingredients were within 93 . 5%-105 . 0%, with the intra_and inter_day precision ( n=6 ) less than 4. 6%. This method was simple, rapid, with good_repeatability, and had been applied to the analysis of real samples.

Objective:To explore the effect of adipose derived mesenchymal stem cells to regulate the differentiation of macrophage RAW264.7.Methods:First,we used RAW264.7 cells to simulate macrophage and induced them to M 1 macrophage with lipopolysaccharide ( LPS,1 μg/ml) .Then we cultured these RAW264.7 cells in culture mediums which were previously used to culture adipose derived mesenchymal stem cells to imitate the transplantation of ADMSC .Last,the mRNA relative expression of IL-10, IGF-1,Arg-1,TNF-α,FIZZ1,SPHK-1 was detected by real-time PCR.The protein expression of IL-12 p40,IL-27 Rα,IL-10 was detected by Western blot.Results:After been cultured in ADMSCCM and induced by LPS ,M1 markers (TNF-αmRNA,IL-12 p40;P<0.05) of the RAW264.7 cells declined while M2 markers (IGF-1 mRNA,IL-10 mRNA,IL-10;P<0.05) rose.Conclusion: ADMSC can secrete soluble cytokines to induce the RAW264.7 cell,which have been induced to the M1 macrophages,to differentiate towards M2 macrophages.

To evaluate the feasibility, safety and efficacy of percutaneous stent implantation for treating left main coronary artery (LMCA) stenosis. Methods Consecutive patients with unprotected left main coronary artery disease treated by stent-based percutaneous intervention (PCI) at 6 medical centers in China were enrolled. Procedural data and clinical outcomes were obtained from all patients. Results From January 2001 to December 2004, 138 patients (79 males and 59 females; mean age: 69.7±5.8 years)underwent PCI for LMCA stenosis. Bare metal stents (BMS) were implanted in 51 patients with non-bifurcational lesions and in 5 patients with bifurcational lesions from January of 2001 to June of 2003 (BMS group);. Drug eluting stents (DES) were used unselectively to cover both bifurcational and non-bifurcational lesions in 86 patients from July of 2003 to December of 2004 (DES group). Procedural success rate of the 138 cases was 98% (135/138). One patient (0.7%) with bifurcation lesion who was treated with DES died from severe heart failure 2 weeks after the procedure. During a mean follow up period of 21.3 ± 5.6 months, one patient died from renal failure, one from sudden cardiac death, 4 underwent target lesion revascularization (TLR) in the BMS group, which all occurred in patients with bifurcational lesions; whereas in the DES group no deaths occurred and only one patient with bifurcational lesion had TLR. Conclusions (1) PCI is feasible and relatively safe to treat unprotected left main coronary artery disease in elderly patients at medical centers with experienced professionals. (2) BMS and DES have similar immediate and long-term efficacy in the treatment of ostium and shaft lesions of the LMCA. (3) DES are strongly suggested in the therapy of distal bifurcation lesion of unprotected LMCA.

Objective To explore the feasibility and effect of 3D modeling and printing technology in constructing bone fracture models and assisting clinical teaching at the department of traumatic orthope-dics. Methods CT scan images of bone fractures were reconstructed by Mimics software. The digital 3D bone fracture models were constructed and the interactive multimedia teaching videos were output. More-over, all bone fracture models were printed by using fusion deposition modeling (FDM). At the end of the teaching course, a questionnaire survey was conducted to evaluate the teaching effect. Results The digital models of common bone fractures at the department of traumatic orthopedics were established, and the in-teractive multimedia teaching videos were output. A traumatic orthopedic teaching model with a 1∶1 scale was printed out. The questionnaire survey indicated that the application of 3D modeling and printing tech-nology to build bone fracture model with PPT teaching can obviously improve students' understanding and mastery of relevant theoretical knowledge. They helped students better remember the type of bone fractures and how to choose the correct internal fixation methods. The teaching effect was satisfactory. Conclusions 3D modeling and printing technology was applied to build bone fracture models to assist clinical teaching at the department of traumatic orthopedics. It was found that the printed 3D bone fracture models can stimulate students' enthusiasm for learning and improve their learning effect. This method has good application value.

Objective To investigate the characteristics of nosocomial infection of carbapenem resistant En-terobacteriaceae ,then to study the risk factors and prognosis of patients ,as to provide evidence for effective control of CRE hospital infection .Methods A retrospective epidemiology study was conducted of CRE infec-ted patients from January 2016 to June 2017 .This was a 1∶2 matched case-control study of patients with in-fection due to carbapenem resistant Enterobacteriaceae and randomly select 218 patients with non CRE infec-tion in the same hospital as control group ,then the risk factors of CRE infection were investigate .Results A-mong the 109 cases CRE infection patients ,the most common bacteria were Klebsiella pneumoniae ,Enter-obacter cloacae and Escherichia coli .The CRE strains were more sensitive to minocycline than other common antibiotics ,the resistance rate to other antibiotics was more than 40% .Univariate analysis showed that ICU staying time more than 7 d ,using beta lactamase inhibitors and carbapenem antibiotics ,combination therapy and mechanical ventilation were the potential risk factors of CRE nosocomial infection .The non conditional multivariate Logistic regression analysis showed that Check in ICU more than 7 d (OR＝ 4 .981 ,95% CI 2 .451-10 .122 ) ,the use of containing beta lactamase inhibitor antibiotics (OR＝ 3 .718 ,95% CI 2 .162-6 .394) ,use of carbapenem antibiotics (OR＝3 .232 ,95% CI 1 .879-5 .561) ,and mechanical ventilation (OR＝5 .26 ,95% CI 2 .576-10 .742) were independent risk factors of CRE nosocomial infection .The nosocomial in- fection CRE strain was with highly antibiotic resistance rate ,and the average hospitalization time and mortality were significantly higher than those of the control group .Conclusion The carbapenem resistant Enterobacte-riaceae infection had multiple independent risk factors ,strengthening of these independent risk factor control can effectively prevent the spread of CRE isolates infection .