Objective To investigate expression and role of tissue factor pathway inhibitor -2(TFPI -2)in normal cervix,cervical intraepithelial neoplasia(CIN)and cervical squamous cell carcinoma.Methods From Janu-ary 2011 to December 2012,114 patients with cervical resection in our hospital were selected,among them,42 patients with cervical squamous cell carcinoma,27 cases with CIN,45 cases of normal cervix.Immunohistochemical method was used to detect the expression of TFPI -2 protein in cervical tissues.Results The expression of TFPI -2 in cer-vical cancer tissues was significantly lower than that in other cervical tissues,the difference was statistically significant (cervical cancer tissues vs.normal cervical tissues χ2 =59.670,P <0.05;cervical cancer tissues vs.CINⅠ χ2 =52.170,P <0.05;cervical cancer tissues vs.CINⅡ/Ⅲ χ2 =32.759,P <0.05).The expression of CIN Ⅱ/Ⅲ TFPI-2 was significantly lower than that of normal cervical tissues and CIN Ⅰ,the difference was statistically significant (χ2 =126.78,P <0.05).The expression level of TFPI -2 in normal cervix tissues and CIN Ⅰ had no statistically significant difference(χ2 =4.903,P >0.05).There was no significant difference in TFPI -2 expression in cervical cancer tissues with different differentiation levels(χ2 =4.633,P >0.05).Figo Ⅰcervical cancer TFPI -2 expression was significantly higher than Figo Ⅱ cervical cancer,the difference was statistically significant(χ2 =6.509,P <0.05).The expression of TFPI -2 in cervical cancer tissues without lymph node metastasis was significantly higher than that in cervical cancer tissues with lymph node metastasis,the difference was statistically significant (χ2 =10.916,P <0.05).Conclusion The reduction of TFPI -2 expression may be involved in the development of cervi-cal cancer,and the expression of TFPI -2 is associated with the prognosis of cervical cancer.

Objective To study the antithrombotic effect of polysaccharide extracted from Thallus Laminariae(PTP) on rats with endothelial injury.Methods Two kinds of endothelial injured rat models were established by injecting adrenaline and endotoxin.The wet weight of thrombus was evaluated by artery-vein loop method,the starting time of thrombus formation and the speed of blood flow were observed by mesentery microcirculation.Results In adrenaline-induced injury rats,the wet weight of thrombus was obviously decreased in high-dose PTP group and aspirin group compared with the model group.In endotoxin-induced injury rats,the starting time of thrombus formation was longer and the one-hour blood flow speed was faster in all TP groups and aspirin group than those in the model group.Conclusion PTP exerts the antithrombotic effect on rats with endothelial injury.

Objective To study the correlation between vitamin D receptor(VDR)polymorphism and psoriasis in the Chinese patients.Methods VDR genotypes were determined by PCR-RFLP in 112unrelated psoriatic patients as well as 108unr elated healthy controls.Results AA and Bb genotypes were found to be ex-pressed more frequently in psoriatic patients(19.6%and 32.1%)than those in normal controls(7.4%and14.8%),respectively.However,no signifi cant correlation was identified between VDR polymorphismand sex,age at onset,family history of psoriasis in psoriatic patients.In addition,there was no significant difference in the fre-quency of A,a alleles and B,b alleles between normal controls and psoriatic patients.Conclusions There is a significant difference in VDR genotypes between psoriatic patients and normal controls.The presence of hom ozygote AA or heterozygote Bb might contribute to the susceptibility of psoriasis.

Objective To validate genetic suppression of metastastic capability of highly metastastic melanoma cells by endostatin transfection.Method pcDNA3.1-Endo eukaryotic expression vector contained insulin signal peptide sequence was transfected into highly metastatic mice melanoma cell strain B 16.The expression of endostain was detected by RT-PCR and Western blot experiment,melanoma cells were determined with adhere experiment,in vitro invasion and migration experiment and pulmonary metastasis experiment on C57BL/6 mice.Result Endostatin can obviously inhibit the capability of adherence,in vitro invasion and migration and pulmonary metastasis of melanoma cells.Among them,adhere inhibition ratio was 67.3%,in vitro invasion inhibition ratio was 48.4%,cell migration inhibition ratiowas 52.1%and pulmonary metastasis inhibition ratio was 67.3%.Conclusion Endostatin transfection can obviously inhibit the highly metastatie capability of melanoma cells.

Objective To develop a rapid and accurate technique for pathogens identification from positive blood cultures by matrix-assisted laser desorption ionization-time of flight mass spectrometry ( MALDI-TOF MS) .Methods A total of 266 culture-positive blood samples from clinical laboratory in the Second Affiliated Hospital of Soochow University during January to July 2015 were collected.The blood was transferred into separation-gel tubes, and the bacteria were enriched and purified by differential centrifugation.MALDI-TOF MS was applied to identify the bacteria and the results were compared with conventional bacterial culture. Results Among 266 culture-positive blood samples, 260 were monomicrobial cultures and 6 were polymicrobial cultures.Of 260 monomicrobial cultures, 98.8% (257/260) and 96.2% ( 250/260 ) of organisms were identified at the genus level and the species level, respectively.Of 140 Gram-negative bacterial isolates, 99.3% (139/140) and 97.9% (137/140) were identified at the genus level and the species level, respectively.Of 120 Gram-positive bacteria isolates, 98.3%(118/120) and 94.2% (113/120) were identified at the genus level and the species level, respectively.None of the 6 polymicrobial cultures were identified.Conclusion MALDI-TOF MS can directly identify the bacteria from positive blood cultures, which provides a rapid and accurate method for the diagnosis of bloodstream infection.

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Objective To study the effect of the ultrasound scalpel and electric knife in axillary lymph node dissection in modified radical mastectomy for breast cancer.Methods The clinical data of 429 patients with modified radical mastectomy for breast cancer were analyzed retrospectively.The axillary lymph node dissection in 178 cases were performed with the ultrasound scalpel (ultrasound scalpel group) and 251 cases were done with the electric knife(electric knife group).The blood loss,operative time,extubation time,the total amount of drainage,the incidence of seroma were compared.Results Two groups were successfully operated,no axillary vessels and long thoracic nerve,chest nerve injury.The blood loss,operative time,extubation time,the total amount of drainage in ultrasound scalpel group were significantly better than those in electric knife group [(98.0 ± 10.2) ml vs.(152.0 ± 11.5) ml,(125.0 ±9.6) min vs.(155.0 ± 12.3) min,(6.0 ± 2.1) d vs.(9.0 ± 4.3) d,(227.0 ± 10.6) ml vs.(319.0 ± 15.8) ml,P＜ 0.05 or ＜ 0.01].The incidence of seroma was no significant difference between two groups (P ＞ 0.05).Conclusions Using ultrasound scalpel in axillary lymph node dissection for breast cancer can significantly reduce operative time,and is consistent with less blood loss,less extubation time and the total amount of drainage.

Objective To analyze the effect of long-term anti-viral treatment in children with acquired immune deficiency syndrome (AIDS) and investigate the factors affecting the treatment efficacy and growth and development of the children, so as to provide reference for improving the efficacy of antiviral drugs.Methods Children with AIDS receiving anti-retroviral treatment during 2004 to 2016 were retrospectively enrolled.The height, weight and CD4+ T cell counts were recorded every half year and the measurement of HIV RNA load was recorded on an annual basis.The CD4+ T cell counts and viral inhibition rates for the children who were under the treatment in the first year, 1~<5 years, 5~<10 years, and ≥10 years were compared.And their growth and development were also assessed.Treatment efficacy and growth and development of the children were compared between those who raised by social organization and by family.Children who raised by family were further divided into two groups: high-income and low-income groups.All categorical data were analyzed using chi-square test and those non-normal distribution were compared by rank-sumtest.Results After comparison between the children who have received anti-virus treatment for 1 to 5 years (including 5 year) and those for 5 to 10 year (including 10 years), the baseline CD4+ T cell counts were 436.5(265, 728)cells/μL and 334 (102, 535)cells/μL, respectively with the statistically significant difference (Z=-2.619, P<0.01).The last measured CD4+ T cell counts were 779 (622, 1 024)cells/μL and 720 (640, 977)cells/μL, respectively with no statistical significance (Z=-0.708, P>0.05);and viral inhibition rates were 92.9% and 97.6%, respectively with no statistical significance (χ2=1.071, P>0.05).The viral inhibition rate for the children receiving the treatment for 1 year was 85.7%, while that for whose treatment lasted for more than 10 years was 100.0%.A total of 5 cases developed drug-resistance (2 cases treated for 1 to 5 years and 3 cases for 5 to 10 years), and the virus replication was completely inhibited after switching to Lopinavir/ritonavir (LPV/r).The drug compliance was more than 95.0%.64.8% of children met the standard height, while 68.5% met the standard body mass.The baseline and last measured CD4+ T cell counts showed no significant differences between family-raised and social organization-raised children (Z=-1.159 and -0.523, respectively, both P>0.05).The children from high-income families had no significant differences compared with those from low-income ones in terms of the baseline and last measured CD4+ T cell counts (Z=-0.019 and -0.776, respectively, both P>0.05).Conclusions The long-term anti-retroviral treatment can effectively elevate the CD4+ T cell counts, inhibit viral replication and ensure drug compliance, which may promote the growth and development of children.However, approximately 30% children are still lower than the normal standards in terms of height and body mass.The drug-taking observer plays a central role on treatment effect.Most of the children′s family suffer from poor economic conditions.

Objective To analyze hemolysin and virulence -related genes in incomplete hemolytic Staphylococcus aureus.Methods Fifty strains of incomplete hemolytic Staphylococcus aureus were isolated from patients admitted in the Second Affiliated Hospital of Soochow University during 2013 and 2014, and the isolates with complete hemolytic phenotype were also collected at the same period as the control strains . All the strains were inoculated and subcultured on four kinds of sheep blood agar plates supplied by different manufacturers to compare their hemolytic phenotype .The relative mRNA expressions of hemolysin genes (hla, hlb, hlc, hld) in standard strain, complete and incomplete hemolytic phenotype strains were detected by real-time quantitative polymerase chain reaction (RT-qPCR), and valued by 2 -△△Ct method.t test was used to compare mRNA expressions of hemolysin genes .Western blot was performed to analyze the expression of α-hemolysin.Antibiotic susceptibility test of incomplete hemolytic strains was performed using broth microdilution method.Resistant gene mecA and virulence genes pvl, tst were detected by PCR.Results The steady and hereditary incomplete hemolysis was observed in 50 strains of incomplete hemolytic Staphylococcus aureus on the sheep blood agar plates from different suppliers .Taking mRNA expression of hla, hlb, hlc, hld in standard strain as 1, the relative mRNA expressions of hemolysin genes in incomplete hemolytic strains were 0.02, 7.51, 0.06 and 0.12 respectively, there were statistical differences between standard strain and incomplete hemolytic strains (t =8.46, -56.40, 8.12 and 7.61, all P <0.05).And the expression of α-hemolysin was decreased in incomplete hemolytic strains .All the strains were identified as methicillin resistant Staphylococcus aureus (MRSA).Three strains exhibited different minimum inhibitory concentrations of teicoplanin and linezolid after subcultured , but the differences had no impact on the final results of antibiotic susceptibility test .mecA, pvl and tst genes were positive in incomplete hemolytic strains . Conclusion Staphylococcus aureus with incomplete hemolytic phenotype is methicillin resistant with higher expression of β-hemolysin and lower expressions of α-hemolysin, γ-hemolysin and δ-hemolysin.It carries plv and tst virulence genes and is of high virulence .

Objective: To investigate the relationship between 18F-FDG PET/CT semi-quantitative parameters and the International Association for the Study of Lung Cancer, American Thoracic Society/European Respiratory Society (IASLC/ATS/ERS) histopathologic classification, including histological subtypes, proliferation activity, and somatic mutations. Materials and Methods: This retrospective study included 419 patients (150 males, 269 females; median age, 59.0 years;age range, 23.0–84.0 years) who had undergone surgical removal of stage IA–IIIA lung adenocarcinoma and had preoperative PET/CT data of lung tumors. The maximum standardized uptake values (SUVmax), background-subtracted volume (BSV), and background-subtracted lesion activity (BSL) derived from PET/CT were measured. The IASLC/ATS/ERS subtypes, Ki67 score, and epidermal growth factor/anaplastic lymphoma kinase (EGFR/ALK) mutation status were evaluated. The PET/CT semiquantitative parameters were compared between the tumor subtypes using the Mann–Whitney U test or the Kruskal–Wallis test. The optimum cutoff values of the PET/CT semi-quantitative parameters for distinguishing the IASLC/ATS/ERS subtypes were calculated using receiver operating characteristic curve analysis. The correlation between the PET/CT semi-quantitative parameters and pathological parameters was analyzed using Spearman’s correlation. Statistical significance was set at p < 0.05. Results: SUVmax, BSV, and BSL values were significantly higher in invasive adenocarcinoma (IA) than in minimally IA (MIA), and the values were higher in MIA than in adenocarcinoma in situ (AIS) (all p < 0.05). Remarkably, an SUVmax of 0.90 and a BSL of 3.62 were shown to be the optimal cutoff values for differentiating MIA from AIS, manifesting as pure ground-glass nodules with 100% sensitivity and specificity. Metabolic-volumetric parameters (BSV and BSL) were better potential independent factors than metabolic parameters (SUVmax) in differentiating growth patterns. SUVmax and BSL, rather than BSV, were strongly or moderately correlated with Ki67 in most subtypes, except for the micropapillary and solid predominant groups. PET/CT parameters were not correlated with EGFR/ALK mutation status. Conclusion As noninvasive surrogates, preoperative PET/CT semi-quantitative parameters could imply IASLC/ATS/ERS subtypes and Ki67 index and thus may contribute to improved management of precise surgery and postoperative adjuvant therapy.