Objective To investigate the combining anticancer effect of tamoxifen(TAM) and ?-interferon on breast cancer cells in vitro and its mechanism.Methods MCF-7 ER-positive breast cancer cell lines were treated with tamoxifen alone,or in combination with ?-interferon and/or estrogen in vitro.Cell proliferation was evaluated by MTT assay;FCM was used to determine the distribution of cell cycle,cell apoptosis and protein expression of Bcl-2,Bax,Fas,FasL,Caspase-8,and the activity of Caspase-3.Results TAM inhibited the proliferation of ER-postive breast cancer cells with cell cycle arrest in G0/G1 phase and with induction of apoptosis,and the proliferation-promoting effect of estrogen on MCF-7 was blocked by TAM.Anticancer effect of TAM was enhanced when cells were pretreated with ?-interferon for 24 hours.Bcl-2 protein expression was down-regulated and Caspase-8 was up-regulated by TAM and/or ?-interferon,but these drugs did not affect Bax,Fas,FasL protein expression and the activity of Caspase-3.Conclusions TAM has anticancer effect by inhibiting proliferation and inducing apoptosis in ER-positive breast cancer cells in vitro,and ?-interferon can enhance anticancer effect of TAM on breast cancer cells.The mechanism of these effects may be related with the down-regulation of Bcl-2 expression and up-regulation of Caspase-8 by TAM and ?-interferon.

Objective To investigate CT findings of polymyositis(PM) in musculus and the applied value of CT.Methods 20 cases of PM confirmed by pathology and undergone CT scan,including waist,back,gluteus thighs and calfs.Above of these gluteus,thighs and calfs were observed groupingly.The observed contents included :muscle density;muscle volume;changes of delecting myofascitis lesions;clear degree of musculature and thickness of subcutaneous fattiness.Results CT findings included amyotrophy in 15 groups;muscle density lower and muscle fat in 53 groups;thickened fascia in 18 groups;subcutaneous fat thickened in 23 groups and musculus indistinet in 3 groups.Conclusion CT can help display the degree and distribution of lesions,and the accurate localization for biopsies in myofascitis.

Objective To investigate the influence of lentivirus mediated short hairpin RNA(shRNA)target to human papilloma virus(HPV)16 E6 on invasive ability of cervical cancer Caski cells.Methods Lentivirus was produced after shRNA target to human papilloma virus(HPV)16 E6 and to nonsense was cloned to lentivirus work vector.Infection ratio was assessed by assay of EGFP positive cells of Caski.Total mRNA of E6 was determined by RT-PCR after Caski cells were infected by lentivirus.The change of E6 protein expression was analyzed by Western blot.The invasive ability of Caski cells was assayed employing Transwell.Results The optimal MOI (Multiplicity of infection)of lentivirus to Caski was 2.5.Total mRNA and protein of E6 were decreased (by 70%and 63%)in interfering group compared with control group.The invasive ability of Caski cells also reduced after infected by lentivirus.Conclusion shRNA mediated by lentivirus can inhibit expression of HPV16 E6 and invasive ability of cervical cancer cells.

Objective To explore the effects of pigmentary epithelium derived factor (PDEF) on the phenotypic and immunologic function of murine-derived dentritic cells(BMDCs) .Methods Mononuclear cells(MNCs) isolated from murine bone marrow were cultured in RPMI1640 medium containing rmGM-CSF and rmIL-4 for 5 d ,and were divided into five groups .MNCs were stimulated for 3 d with either 50 ,100 ,200ng/mL PEDF ,1 μg/mL LPS(positive control) or RPMI1640(negative control) .The expression of CD11c ,CD80 and CD86 on DCs surface were analyzed by the fluorescence activated cell sorting (FCM ) .The ability of PEDF-induced BMDCs to stimulated T cell maturation were determined by the CCK-8 method and the level of IL-12 in the culture supernatant was detected by ELISA .Results The PEDF-treated BMDCs expressed high levels of CD11c ,CD80 and CD86 ,enhanced the immunolog-ical activities of T lymphocyte and its secretion of IL-12 when compared with untreated DCs .Conclusion PEDF can significantly up-regulate the expression of DCs immunological labelled molecule in in vitro cultured murine and increase its immunological com-petence .

Objective To investigate the correlation and significance of S100A12 with obstructive sleep apnea hypopnea syndrome (OSAHS).Methods Fifty-three patients with OSAHS were chosen as OSAHS group and 46 healthy volunteers were chosen as control group.The levels of S100A12 and hs-CRP in the two groups were compared,and its relationship with those of epworth (ESS),apnea hypopnea index (AHI),and minimum blood oxygen saturation (L-SpO2) were analysised.Results The scores of ESS,BMI,A HI,L-SpO2,hs-CRP and S100A12 in two groups were statistically significant (P＜0.05).The severity of hs-CRP in severe OSAHS group was significantly higher than that of mild OSAHS group (P＜0.05).There was no significant difference in hs-CRP between moderate OSAHS group and mild OSAHS group and severe group (P＞0.05).The level of S100A12 in severe OSAHS group was significantly higher than that of moderate OSAHS group and OSAHS mild group(P＜0.05).The level of S100A12 in moderate moderate group was significantly higher than that of mild group(P＜0.01).hs-CRP was negatively correlated with ESS and AHI (r=0.822,0.787,P＜0.01),was positively correlated with L-SpO2 (r=-0.740,P＜0.01),S100A12 was positively correlated with ESS and AHI (r =0.707,P ＜ 0.01),and negatively correlated with ESS and AHI (r =0.707,0.807,P＜0.01),and negatively correlated with with L-SpO2 (r=-0.670,P＜0.01).Conclusion S100A12 is associated with OSAHS.The higher the severity of OSAHS,the higher the S100A12 value,which can be used as a new predictor of cardiovascular disease risk in OSAHS patients.

Objective:To establish a predictive model and investigate its value in evaluating short-term prognosis of patients with hepatitis B virus related acute-on-chronic liver failure (HBV-ACLF).Methods:Patients with HBV-ACLF admitted to Tianjin Second People's Hospital and Beijing Youan Hospital, Capital Medical University from May 2015 to October 2018 were enrolled. The data of gender, age, laboratory markers at admission, model for end-stage liver disease (MELD) score and clinical complications were collected for analysis. According to the prognosis on 12-week, patients were divided into survival group and death group. Univariate analysis and binary Logistic regression analysis were used to test the risk factors for short-term prognosis of the patients with HBV-ACLF, and a prediction model was established. The accuracy of each index and the established model were verified by the receiver operating characteristic (ROC) curve.Results:A total of 148 patients with HBV-ACLF were enrolled in the study, 91 cases survived while 57 cases died during the 12-week period. The age, total bilirubin (TBIL), neutrophil percentage (NEUT%), hepatitis B surface antigen (HBsAg), MELD score of death group were higher than those of survival group [age (years old): 50.00 (44.50, 55.00) vs. 43.00 (34.00, 53.00), TBIL (μmol/L): 310.30 (240.70, 405.70) vs. 266.40 (184.20, 360.20), NEUT%: (74.52±13.05)% vs. (66.64±12.35)%, lg HBsAg (kU/L): 3.72 (3.29, 3.92) vs. 2.97 (2.49, 3.78), MELD score: 24.27 (19.71, 27.40) vs. 21.88 (18.83, 24.38), all P < 0.05], while albumin (ALB), total cholesterol (CHO), prothrombin activity (PTA) and alpha-fetoprotein (AFP) were lower than those of survival group [ALB (g/L): 29.80 (27.05, 31.05) vs. 30.80 (28.00, 33.90), CHO (mmol/L): 1.98 (1.50, 2.38) vs. 2.49 (2.05, 3.01), PTA: (30.37±7.09)% vs. (32.94±6.03)%, AFP (μg/L): 21.54 (9.28, 51.54) vs. 66.16 (24.50, 152.80), all P < 0.05]. Logistic regression analysis showed that NEUT%, HBsAg and AFP were independent risk factors for short-term prognosis of patients with HBV-ACLF [odds ratio ( OR) was 77.843, 1.439, 0.995, respectively, all P < 0.05]. According to the results of regression analysis, the NHA-ACLF model (NEUT%+HBsAg+AFP) was established. The formula was logit (NHA-ACLF) = -5.441+5.688×NEUT%+0.430×lg HBsAg-0.005×AFP. The area under the ROC curve (AUC) of the NHA-ACLF model for pred HBV-ACLF patients was 0.790, which was better than NEUT% (AUC = 0.696), lg HBsAg (AUC = 0.670), AFP (AUC = 0.703) and MELD score (AUC = 0.640). When the cut-off value of NHA-ACLF model score was 0.459, the sensitivity was 73.7%, and the specificity was 79.1%. Conclusions:NEUT%, HBsAg and AFP are independent predictive indicator for short-term prognosis in patients with HBV-ACLF. Compared with MELD score, the risk assessment model NHA-ACLF has a greater value in predicting the short-term prognosis of patients with HBV-ACLF.

Objective To study the stress distribution and biomechanical stability of the long-type composite locking plate already used in clinic practice and the novel short-type composite locking plate for treating Sanders type IIa, IIb and IIIab calcaneal fractures. Methods The three-dimensional (3D) models of Sanders type IIa, IIb and IIIab calcaneal fractures were established, and the force conditions of calcaneus in neutral standing position and under 20°dorsal extension were simulated. By referring to the physical form of human specimens, 500 N vertical axial load was applied, so as to study the displacement and relative displacement of the fracture block under the force, and the force conditions of bone tissues and internal fixation were analyzed. Results For Sanders type IIa, IIb calcaneal fractures treated with long-type and short-type composite locking plates, the stress concentration positions of the plates and calcaneal fractures were basically the same. The maximum stress difference of the two plates for fixing calcaneal fractures with the same type was smaller than 5 MPa, and there was no significant difference in the maximum displacement of the fracture models. For Sanders type IIIab calcaneal fractures treated with long-type and short-type composite locking plates, the maximum stress concentration occurred in the forearm of plate screws, indicating the risk of metal fatigue. The maximum stress difference was up to 12 MPa, and the maximum calcaneal displacement was up to 9 μm. Conclusions The long-type and short-type composite locking plates showed no significant differences in treating Sanders type IIa, IIb calcaneal fractures. For fixing Sanders type IIIab calcaneal fractures, the long-type composite locking plate was superior to the short-type composite locking plate.

Abnormal liver function in pregnancy is a common clinical problem in the department of obstetrics and liver disease, but its severity can cause danger to the life of the mother and fetus. Therefore, the different cause of abnormal liver function in pregnancy should be assessed accurately in order to take early intervention measures. Moreover, it is necessary to comprehensively evaluate the situation of both mother and fetus to obtain the optimal treatment effect for abnormal liver function caused by different types of pregnancy-related liver diseases.

ObjectiveTo explore the syndrome elements and evolving patterns of patients with hepatitis B virus-related acute on chronic liver failure （HBV-ACLF） at different stages. MethodsClinical information of 1,058 hospitalized HBV-ACLF patients， including 618 in the early stage， 355 in the middle stage， and 85 in the late stage， were collected from 18 clinical centers across 12 regions nationwide from January 1， 2012 to February 28， 2015. The “Hepatitis B-related Chronic and Acute Liver Failure Chinese Medicine Clinical Questionnaire” were designed to investigate the basic information of the patients， like the four diagnostic information （including symptoms， tongue， pulse） of traditional Chinese medicine （TCM）， and to count the frequency of the appearance of the four diagnostic information. Factor analysis and cluster analysis were employed to determine and statistically analyze the syndrome elements and patterns of HBV-ACLF patients at different stages. ResultsThere were 76 four diagnostic information from 1058 HBV-ACLF patients， and 53 four diagnostic information with a frequency of occurrence ≥ 5% were used as factor analysis entries， including 36 symptom information， 12 tongue information， and 5 pulse information. Four types of TCM patterns were identified in HBV-ACLF， which were liver-gallbladder damp-heat pattern， qi deficiency and blood stasis pattern， liver-kidney yin deficiency pattern， and spleen-kidney yang-deficiency pattern. In the early stage， heat （39.4%， 359/912） and dampness （27.5%， 251/912） were most common， and the pattern of the disease was dominated by liver-gallbladder damp-heat pattern （74.6%， 461/618）； in the middle stage， dampness （30.2%， 187/619） and blood stasis （20.7%， 128/619） were most common， and the patterns of the disease were dominated by liver-gallbladder damp-heat pattern （53.2%， 189/355）， and qi deficiency and blood stasis pattern （27.6%， 98/355）； and in the late stage， the pattern of the disease was dominated by qi deficiency （26.3%， 40/152） and yin deficiency （20.4%， 31/152）， and the patterns were dominated by qi deficiency and blood stasis pattern （36.5%， 31/85）， and liver-gallbladder damp-heat pattern （25.9%， 22/85）. ConclusionThere are significant differences in the distribution of syndrome elements and patterns at different stages of HBV-ACLF， presenting an overall trend of evolving patterns as "from excess to deficiency， transforming from excess to deficiency"， which is damp-heat → blood stasis → qi-blood yin-yang deficiency.