Aim To study the effects of pyrrolidine dithiocarbamate(PDTC) on matrix metalloproteinase-9(MMP-9) expression in alveolar macrophages(AM) induced by TNF-?,and then to explore it's signal pathway.Methods AM were collected from bronchoalveolar lavage fluid in patients with chronic obstructive pulmonary disease.AM were pretreated with PDTC and then stimulated by TNF-? or IL-1.MMP-9 mRNA expression was detected by semi-quantitative reverse transcription-polymerase chain reaction and MMP-9 protein expression was detected by Western blot.Phospho-I?B? protein levels induced by TNF-? or IL-1 were detected by Western blot.NF-?B activity was detected by electrophoretic mobility shift assay.Results Both the mRNA and protein levels of MMP-9 induced by TNF-? in AM were significantly elevated in a dose dependent manner(P0.05).PDTC had distinct effect of inhibiting the activation of NF-?B induced by TNF-? or IL-1 in a dose-dependent manner(P0.05).Conclusions NF-?B plays an important role in MMP-9 expression induced by TNF-? in AM;PDTC can down-regulate MMP-9 expression induced by TNF? in AM possibly through preventing the degradation of I?B? via ubiquitylation-proteasome proteolytic pathway.

Objective To investigate the categories of fetal anomalies detected by ultrasound scan in the third trimester.Methods From January 1,2012 to December 31,2013,492 singleton fetuses were found to have structural abnormalities on the first,second or third trimester ultrasound scan in the Peking University First Hospital,only 50 (10.2％) fetuses were detected on the third trimester (≥ 28 weeks of gestation) with no abnormalities detected on the first and second trimester scan,were enrolled.The categories of the fetal structural abnormalities were analyzed.Results The age of the mothers of the 50 fetuses with structural abnormalities was (35.7± 5.2) years (26-43 years) with an average gestation of (32.4±2.8) weeks (28.6-36.8 weeks).These abnormalities were seen in the central nervous system (42％,21/50),digestive system (28％,14/50),urinary system (16％,8/50),cardiovascular system (8％,4/50),respiratory system (4％,2/50) and facial structures (2％,1/50).Intrauterine death occurred in one case and 49 mothers had a live birth.After birth,14 neonates were normal,five needed further treatment,three cases were complicated by other abnormalities,23 had no dysfunction but need follow-up and four were lost to follow-up.Six of the 20 (30％) fetuses with central nervous system abnormalities and 2/4 fetuses with cardiovascular system abnormalities had an adverse prognosis,while 1/12 and 2/7 fetuses with digestive and urinary system abnormalities had an adverse prognosis.Conclusions The central nervous system and cardiovascular system should be examined in priority during the third trimester ultrasound scan.

Small cell carcinoma of cervix (SCCC) is a rare and high malignant neuroendocrine tumor.Because of its strong invasion,metastasis in early stage and easy recurrence,the prognosis is poor.Its diagnosis is based on pathomorphology,and immune-histochemistry biomarkers can improve its diagnosis.Combined therapy is recommended.Postoperative platinum/etoposide (PE),vincristine/adriamycin/cyclophosphamide (VAC) or taxel/carboplatin(TP) chemotherapy can improve the prognosis.

AIM: To study the effects of NF-?B decoy oligonucleotides(ODNs) modified with locked nucleic acids(LNA) on gelatinases(MMP-9 and MMP-2) expression and NF-?B activity induced by TNF-? in alveolar macrophages(AM) from patients with chronic obstructive pulmonary disease(COPD).METHODS: AM was collected from bronchoalveolar lavage fluid from patients with COPD.NF-?B decoy ODNs and mismatch ODNs were modified with LNA, and transfected into AM by using Lipofectamine 2000.Then the AM were stimulated for 24 h with TNF-?.Semi-quantitative reverse transcription-polymerase chain reaction(RT-PCR) was used to detect the mRNA expression levels of MMP-9 and MMP-2.MMP-9 protein expression was detected by Western blotting.NF-?B activity was detected by electrophoretic mobility shift assay(EMSA).RESULTS: NF-?B decoy ODNs significantly inhibited MMP-9 and MMP-2 expression induced by TNF-? in AM(P

Objective:To investigate the expression of dental matrix protein 1(DMP1)in carious human permanent teeth and its possible role during the reparative process after pulp injury.Methods:10 of noncarious third molars (NC),10 of shallow carious (SC),10 of intermediate carious (IC) and 10 of deep carious (DC) were prepared for the detection of DMP1 in odontoblasts by immunohistochemical staining. DMP1 expression in odontoblasts was analyzed by image analysis system and expressed as integral optical density (IOD).Results:DMP1 was majorly detected in cytoplasms and processes of odontoblasts and odontoblast-like cells.The IOD values in the groups of NC,SC,IC and DC were 0.265?0.018,0.309?0.021,0.678?0.031 * and 0.691? 0.033 * respectively;that in the reparative dentin in DC group was 0.856?0.045 ** ( *vs NC P

Objective To explore the features of the airway inflammation in a rat model of chronic bronchitis and study the role of IL-8 in the pathogenesis of chronic bronchitis. Methods The rat model of chronic bronchitis was set up by injecting LPS into trachea. Cell count and cytological classification in BALF were performed in experimental group and control group. The level of IL-8 in both serum and lung tissues of the two groups rats was measured by ELISA. Results The levels of IL-8 in both serum and lung tissues in the rats with chronic bronchitis were significantly higher than those in healthy control rats.The number of neutrophil in BALF of the rats with chronic bronchitis was significantly more than that in healthy control rats. Conclusion Both IL-8 and neutrophil were involved in airway inflammation of chronic bronchitis, and might play an important role in the pathogenesis of chronic bronchitis.

ObjectiveTo investigate the language cortex organization characteristics of native Chinese. Methods20 patients who underwent language mapping via intraoperative direct cortical electrical stimulation (ioDCES) under awake anaesthesia for glioma in dominant hemisphere were analyzed retrospectively. Results16 patients were identified at least one language site, 3 patients located in the frontal and 1 patient in the temporal lobe. The language sites mostly located in the perisylvian region. The frontal language sites conformed to traditional Broca's areas, but the superior temporal gyrus contained much more language sites than the middle temporal gyrus.ConclusionHigh individual variability in language organization indicates a need for revision of the classical model of language localization. Because of the samples were too small, our current dates can't fully reflect language cortex organization characteristics of native Chinese.

Objective To explore the indexes change of coagulation and fibrinolysis in APL with ATRA and As2O3.Methods Treatment group 18 eases were undeaaked ATRA 20-30 mg/d until relieved completely.0.1%arsenic trioxide 10 ml with 5%glucose 500 ml for 28 days.Normal control 10 cases were undertaked ATRA 45～60 mg/d until relieved completely.Results The CR rate of treatment group was higher than control group(P＜0.05),the patients of control group showed different reactions such as thirsty mouth,rationale acid syndrome.2 cases reacted strongly and the treatment had to be interrupted,the patients of treatment group had little reaction,but liver function were badly hurt and liver-protection treatment was needed.Fbg,D-dimer recovery time is 7 days,21 days in treatment group,14 days,21 days in control group.Conclusion CR rate is high and has little side effect,and indexes change of coagulation and fibrinolysis were recovered quickly,it has great significance to take D-dimer as early diagnose and observe the indexes change during the treatment.

Objective To assess the prevalence of c-Kit and FLT3 gene mutations in core binding factor related acute myeloid leukemia (CBF-AML) and analyze the karyotype characteristics of the CBF-AML patients. Methods Mutations of c-Kit, FLT3-ITD and FLT3-TKD were detected by genomic DNA PCR and sequencing, and the karyotype changes were analyzed in 48 newly diagnosed CBF-AML patients. Results c-Kit aberrations were detected in 13(27.1 %) out of 48 patients, including 5 cases with exon 8 mutation and 8 cases with exon 17 mutation. c-Kit was more prominent in t(8;21) AML patients than in inv(16) AML patients [(33.3 %(9/27) vs 19.0 %(4/21), P<0.05]. Only 1 case (2.1 %) had FLT3-ITD mutation (FLT3-ITD+) and 3 cases (6.3 %) had FLT3-TKD mutation (FLT3-TKD +). Prevalence of RUNX1-RUNX1T1 with additional chromosome abnormality was as high as 25.9 %(7/27), in which sex chromosome elimination was the most common one, while prevalence of CBFβ-MYH11 with additional chromosome abnormality was low. Conclusion c-Kit gene mutations and RUNX1-RUNX1T1 additional chromosome abnormalities are common in patients with CBF-AML and would be helpful for individualized treatment studies.

Objectives:To evaluate the adhesive effect of resin and dentin perpared by air abrasion. Methods:Dentin of 48 permanent molars was exposed and treated with ① air sand blasting+whole acid corrosion+Estet. X TM,② air sand blasting+SE BOND,③ air sand blasting+Esthet. X TM,④Turbine+whole acid corrosion+Esthet.X TM respectively with 12 samples in each group. Then resin adhesive was applied.Microtensile testing was used to examine the microtensile bond strength. SEM was used to observe the change of resin jags. Results:The microtensile bonding strength in group ①,②,③ and ④ was 27.96?1.42, 29.84?2.56,14.48?2.45 and 27.73?1.48 respectively (① vs ③,② vs ③ and ③ vs ④ P