Adult ; Career Mobility ; Factor Analysis, Statistical ; Female ; Humans ; Intention ; Job Satisfaction ; Male ; Personnel Turnover ; Surveys and Questionnaires

Objective To investigate antiproliferative activity of endostatin(ES), the combining effect of Endostar and radiation on VEGF and apoptosis of the A549 human lung adenoearcinoma cell line.Methods The cell of exponential phase of growth were divided into the control, radiation alone, ES alone,radiation after ES(ES→RT), ES after radiation(RT→ES), radiation and ES at equal paee (RT+ES), γ-ray radiation at a dose of 2 Gy, single fracination irradiation, YH-16 10 μg/ml in the cell culture bottle. The combining effect was quantified by the survival curve. ELISA was used to observe the VEGF of radiation with ES on A549 cell lines. Apoptosis was observed by Hoeehst staining. Results There showed that both of ES and combining treatment had the function of antiproliferative. But the union treatment's function was more obvious (P＜0.05). The expression of VEGF in ES and the combining treatment group was more lower than others (P＜0.05). On apoptosis, the rate of apoptosis in ES, RT, combining treatment group was higher than others (P＜0.05). Conclusion On antiproliferative activity and rate of apoptosis, the combining of ES and radiation is better than to use them alone. To reduce VEGF of the A549 human lung adenocareinoraa cell line by ES could enhance radioresponse. There is no evidences to show that the expression of VEGF is concerned with the different choronological order of radiation and ES.

Objective To evaluate the effectiveness of psychological health intervention in the elderly urban residents living on minimum subsistence allowances, and to search for a suitable psychological health intervention strategy. Methods The 112 elderly persons living on minimum subsistence allowances in Xuzhou were selected by stratified cluster sampling, and they were matched with 112 controls. The elderly persons living on minimum subsistence allowances were divided into intervention group and control group. A general intervention based on community involved psychological health and care lecture, psychodrama treatment and psychological consultancy was made on the intervention. The SCL-90 was used to evaluate the psychological health status and effectiveness of psychological health intervention. Results The elderly persons living on minimum subsistence allowances had higher SCL-90 scores compared with other residents, and their psychological health status was serious. After the psychological health intervention, the SCL-90 scores were all lower in intervention group than in control group [ interpersonal relationship sensitiveness: (1.13 ± 0. 39) vs.(1.26±0.26), t=2.12, P=0.04; gloom: (1.23±0.66) vs. (1.43±0.24), t=2.08, P=0.04;anxiety: (1. 18±0.50) vs. (1.38±0.34), t=2.17, P=0.03; hostility: (1.24±0.49) vs. (1.40±0.28), t=2.03, P=0.04; other factor: (1. 31±0.56) vs. (1.49±0.31), t=2.04, P=0.04; total score: (115.89± 17.21) vs. (122.64± 10.41), t=2.42, P=0.02]. Conclusions The psychological health parameters are improved by psychological health intervention.

Objective:To compare the effects of 3 different crystalloid fluids at different osmotic concentrations on blood-brain barrier(BBB) and brain edema in severe hemorrhagic shock rats.Methods: A total of 150 male SD rats were equally randomized into a lactated Ringers(LR) group,a 7.2% hypertonic saline(HS) group and a plasmalyte A(PA) group.LR,PA and HS were administered after an hour of severe hemorrhagic shock induced by drawing out about 40% of total blood and maintaining MAP at 35-45 mmHg.Serum S100B,cerebra1 Evans Blue(EB) and water content were determined before(T_0) and 1 h after bleeding(T_1) and immediately(T_2),1 h(T_3) and 2 h(T_4) after administration.The changes of BBB in the hippocampus CA1 area were observed by electron microscopy.Results: The serum S100B level was obviously higher at T_1,T_2,T_3 and T_4than at T_0 in all groups(P0.05).The cerebra1 water content was significantly increased at T_1,T_2,T_3 and T_4in the LR group,at T_1in the HS and at T_1,T_2 and T_3 in the PA as compared with T_0(P

Actins ; metabolism ; Animals ; Collagen Type III ; metabolism ; Collagen Type IV ; metabolism ; Desmin ; metabolism ; Diabetes Mellitus, Experimental ; complications ; Diabetic Nephropathies ; metabolism ; pathology ; HSP47 Heat-Shock Proteins ; metabolism ; Kidney Glomerulus ; metabolism ; pathology ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Vimentin ; metabolism

Objective To elucidate the effects of erythromycin derivative,9(S)-hydroxyerythromycin, on the expression of NF-?B in active T lymphocytes,and evaluate the potential role in the treatment of rheuma- toid arthritis(RA).Methods Jurkat T cells were exposed to 100 pmol/L tumor necrosis factor(TNF)-?with or without pretreatment with 3,10,30 or I00?g/ml of erythromycin or 9(S)-hydrnxyerythromycin 1 h at 37℃. The expression of NF-?B was measured by reverse transcription-polymerase chain reaction(RT-PCR)and Western blot.Results Erythromycin and 9(S)-hydroxyerythromycin decreased the expression of NF-?B mRNA and protein in a dose-related fashion.The treatments with erythromycin(100?g/ml)and 9(S)-hydrox- yerythromycin(100?g/ml)resulted in about 36%,45% reduction of NF-?B mRNA(P

Objective To study the influence of low-iodine diet on the expression of homeobox gene nkx2.1 in rat cerebral tissue. Methods Forty female Wistar rats were randomly divided into two groups according to body. quality: low-iodine group and control group,both fed with low-iodine feed at an iodine content of 13.66 μg/kg,respectively given the deionized water and 200 μg/L KIO3 solution. The hormone levels of two group rats were determined with chemiluminescence immunoassay after three months, and then mated with healthy male rats. Cerebral tissues were taken from the fetus of 16-day pregnancy,newborn and 20 days old offspring in low-iodine and control group to detect the content of nkx2.1 mRNA using real-time fluorescence quantitative PCR (FQ-PCR) techniques. Results Serum TT3, TT4, FT3, FT4 level of rats in low-iodine group(0.89±0.20, 0.32±0.16, 3.33± 0.61, 3.28±0.80) was respectively lower than that in the control group(1.04±0.06, 39.42±14.68,4.83±0.33, 26.99±4.48;t = 2.71,6.52,5.70, 12.89, P < 0.05 or < 0.01). The relative nkx2.1 mRNA expression was(5.60± 0.30)×10-3, (1.20 ± 0.29)×10-3, (0.18± 0.06)×10-3 respectively in the fetus of 16-day pregnancy, newborn and 20 days old offspring of control group, while it was (3.00 ± 0.55)×10-3, (1.90 ± 0.21)×10-3,(0.69 ± 0.15)×10-3 in the low-iodine group. The difference of nkx2.1 mRNA expression was significant among fetal and neonatal rats in the control group and low-iodine group(F = 210.07,162.40, both P < 0.01). The nkx2.1 mRNA expression of newborn rats was lower than that of 16-day pregnancy in both groups(P < 0.01), and that of 20 days old rats was lower than that of 16-day pregnant and neonatal rats(P < 0.01). The 16-day pregnant rats of control group had obviously higher level of nkx2.1 expression than those in the low-iodine group(t = 16.073, P< 0.01), while the nkx2.1 of newborn and 20 days old low-iodine rats expressed much higher than healthy rats(t = 7.573,12.221, P < 0.01). Conclusions Brain development retardation caused by low-iodine is closely related to nkx2.1 differential expression in the brain tissue.

Objective To study the influence of low-iodine diet on the expression of homeobox gene Nkx-6.1 and Nkx-6.2 in rat cerebrum tissue, and to explore the possible molecular mechanism of cerebrum development retardation caused by low-iodine. Methods Twenty female Wistar rats were randomly equally divided into two groups: low-iodine group and control group, both fed with low-iodine diet as low as 13.66 μg/kg determinated by spectrophotometry in Tianjin Institute of Endocrinology and the former with deionized water, the later 200 μg/L potassium iodate. Thyroid hormone level was detected using chemiluminescence immunoassay 3 months later and they were mated with male rats normally fed. Rats of 16-day pregnancy, new-born and 20th days old were detected the content of Nkx-6.1 and Nkx-6.2 mRNA in the cerebrum tissue by real-time fluorescence quantitative PCR 0.61), (3.28±0.80)pmol/L] were lower than the control group[(1.04±0.06), (39.42±14.68)nmol/L, (4.83±0.33), day pregnancy, new-born and 20th days old of control group was (1.90±0.23)×10-3,(1.86±0.40)×10-4, (1.11± 0.27)×10-4(F=827.58, P<0.01), Nkx-6.1 mRNA expression level gradually decreased along with aging(all P<0.05). The intra-group difference was significant (F=297.25, P<0.01) and the Nkxr.1 mRNA expression level during 16 days of pregnancy was the highest(P<0.01). It was higher in the control group than in the low-iodine group during 16 days of pregnancy (t=10.14, P<0.01) as well as in the low-iodine group than in the in 16-day pregnancy, new-born and 20th days old of control group was respectively(1.03±0.19)×10-2, (1.33± 0.10)×10-3, (8.79±0,87)×10-3, and that of low-iodine group was (0.31±0.03)×10-2, (1.53±0.13)×10-3, (7.51±0.86)×10-2. The intra-group difference was significant(F=1293.02,1065.83, all P<0.01). Nkx-6.2 expression level during 20th days old was the highest(P<0.01) and that of newborn was the lowest(P<0.01). The Nkx6.2 mRNA expression level in control group were higher than the low-iodine group during 16-day pregnancy and 20th days old(t=14.35, 4.05, all P<0.01). It was higher in the low-iodine group than in the control group during newboru(t=4.78, P<0.01). Conclusions The difference in the expression of Nkx-6.1 and Nkx-62 is highly related to the brain development retardation caused by low-iodine.

Objective To investigate the diagnostic values of imaging techniques and endoscopy in detection the causes of post-hepatic obstructive jaundice.Methods The clinical data of 57 patients with post-hepatic obstructive jaundice were retrospectively studied.The causes of the obstruction and the findings of uhrasonography(US),computerized tomography(CT),magnetic resonance imaging(MRI)or MRIcholangiopancreatography(MRCP),endoscopic retrograde cholangiopancreatography(ERCP)and endoscopic ultrasonography(EUS)were compared.Results The causes of 57 patients with post-hepatic obstruetive jaundice were benign obstruction in 42(including stones in common bile duct in 38,ascariasis of CBD in 1,postoperative stricture in 2 and chronic pancreatitis in 1),and malignant lesions in 15(including pancreatic head carcinoma in 11 and ampullary carcinoma in 4).The diagnostic accuracy in terms of lesion location of US,CT,MRI+MRCP,ERCP and EUS were 71.93%(41/57),88.00%(22/25),94.59% (35/37),100.00%(47/47)and 96.77%(30/31),respectively;the diagnostic accuracy of cause of obstruction were 63.16%(36/57),80.00%(20/25),83.78%(31/37),100%(47/47)and 96.77% (30/31),respectively.Conclusion Benign diseases are the main causes of post-hepatic obstructive jaundice,but malignant ones are not rare.It is important to combine miscellaneous imaging techniques and endoscopy in diagnosis.

Objective: To test applicability of the Center for Epidemiological Studies Depression Scale (CES-D) in different age groups in urban China, and to develop age norms. Methods: In this cross-sectional study, the CES-D was administrated to 16047 community participants with average age of (37.7±21.3) years (age ranged 11～100) in 21 provinces, who were as the norming sample. Criterion validity was tested in 349 psychiatric patients with average age of (32.0±12.1) years (age ranged 16～81) in 4 cities. A subsample (199 workers, 100 col-lege students, and 30 teachers in Beijing, Dongguan, and Baotou) was drawn from the national sample to provide 8 week interval test-retest reliability. Results: The Cronbach α was 0.90 for the scale, and 0.68～0.86 for its fac-tors. The 8 week interval test-retest correlation was 0.49 for the scale (P <0.01) and 0.39～0.51 for factors (P<0.01) . The result of confirmatory factor analysis supported the original 4-factor structure (RMSEA=0.057, CFI =0.976, GFI=0.948) . Patients scored higher than community sample [(21.72±13.39 ) vs.(13.24±10.33),P <0.01], and depression patients scored the highest [(27.82±14.42), P<0.01] . Age difference was signifi-cant. Age groups over 60-year-old scored higher than all the other age groups under 60-year-old (P<0.01). Con-clusion: The Chinese version of CES-D shows good refiability and validity across all ages in urban population-