Gene Expression Regulation ; immunology ; Gene Expression Regulation, Viral ; HIV Infections ; genetics ; immunology ; metabolism ; HIV-1 ; genetics ; immunology ; Humans ; Immunity, Innate ; genetics ; immunology

Objective: To confirm the cognitive rationale of Guilty Knowledge Test (GKT) with a polygraph lie-detection test,explore the merits of GKT's variation as narrowing unclear range of guilty knowledge, and to discuss the problems of the commonly used scoring method which was introduced by Lykken initially in order to obtain more scientific scoring method in accordance with the cognitive rationale. Methods:40 college students were chosen as participants.The study was designed under non-motivational instructions and neutral materials of meaningless letter strings. Results: The lie detection accuracy of this research was 73% under standard GKT paradigm (namely, the tester knowing the guilty knowledge clearly) with the scoring method introduced by Lykken, which confirmed the cognitive rationale of GKT. The accuracy of reducing guilty knowledge range from 5 to 2 was 78.4% in the condition of unclear-clue GKT (namely, the tester only knowing the guilty knowledge in the range of five items) with the scoring method of height and vicinity.Conclusion: The accuracy of lie detection with standard GKT in this study is similar to top accuracies of foreign studies with the same pattern and verified the rationale of cognition for GKT. The innovative scoring method suggested in this paper bears merits in application and is worth further studying.

Objective To detect the proliferation of neural stem cells (NSC) and analyze the effects of taurine on NSC proliferation in rats with fetal growth restriction (FGR).Methods For in vivo experiment,pregnant rats were randomly divided into three groups:control group (n=5),FGR group (n=7) and taurine group (n=6) [treated with taurine,300 mg/(kg · d)].Rats in the latter two groups were fed with 40％ of food intake in control group throughout pregnancy to establish the FGR model.Fatty acid binding protein-7 (FABP-7) expression in brains was detected by immunohistochemistry.For in vitro experiment,pregnant rats were divided into two groups including control group and FGR group.FGR modeling was established in the same way as above.On the 14.5 day of pregnancy,NSC were isolated and cultured for five days to form neurospheres with different concentrations of taurine (control,0,5,10,15,20,30,40 mmol/L).Immunofluorescence staining was used to detect the expression of NSC-specific marker FABP-7.CCK8 test was used to detect the cell proliferating index.Neurospheres were collected at the end of culture and disaggregated to get the total number of viable cells.One-way ANOVA,Kruskal-Wallis Test,SNK-test and Tamhane's test were used for statistical analysis.Results Compared with the control group (18 012±3 016),the number of FABP-7-positive cells in FGR model group (10 173±1 728) was decreased (P＜0.05),but increased in taurine group (19 518±3 201) (F=200.8,P＜0.05).Free-floating neurospheres could be formed in both control and FGR groups and the cells within neurospheres were mostly FABP-7-positive and were then considered as NSC.The proliferation indexes in control,FGR,FGR+5 mmol/L taurine,FGR+10 mmol/L taurine,FGR+15 mmol/L taurine,FGR+20 mmol/L taurine,FGR+30 mmol/L taurine,FGR+40 mmol/L taurine groups were 1,0.80±0.07,0.92±0.11,1.33±0.24,1.20±0.15,1.11 ±0.14,0.80±0.12 and 0.82±0.08,respectively.The proliferation indexes in FGR groups treated with 10,15 or 20 mmol/L of taurine were significantly higher than that of FGR group without taurine interference (P＜0.05).The total cell numbers in the eight groups were (24.5 ± 0.6)× 105,(20.23 ± 1.09)× 105,(22.80 ±0.86) × 105,(27.53± 1.22)× 10s,(25.30±1.05)× 105,(22.70±0.72)× 105,(21.80± 1.80)× 105 and (18.06 ± 0.90)× 105,respectively.Compared with the FGR group without taurine interference,those treated with 5,10,15 or 20 mmol/L of taurine showed higher total cell numbers (all P＜0.05 or ＜0.01),while that treated with 40 mmol/L oftaurine was lower.Conclusions The number and proliferation of NSC in FGR fetal rat brains is significantly decreased,however,these could be reversed by antenatal supplementation of taurine.The best effect is shown when l0 mmol/L of taurine is given.

Objective To make sure whether Bcrp1 is the marker of cervical cancer stem-like cells or not by studying the characterization of Bcrp1+ HeLa cells.Methods Immunofluorescence stained flow cytometry and electron microacope were used to sort and observe uhrastructures of Bctp1+ and Bcrp1- HeLa cells.Flow cytometry wag used to identify the cycle and the rate of apoptosis with annexin V in two group cells.The expression of proliferating cell nuclear antigen (PCNA)and caspase-3 were tested using western blot methed.Results (1)There were 7.1% Bcrp1+ cells and 92.9% Bcrol- cells in HeLa cells.Bcrp1+ HeLa cells were large in size of nuclear and nucleoli are clear.and there were rich of cytomicrosome and rough endoplasmic reticulum.After sorted and cultured for 24,48,72 hours,the adhesion in Bcrp1+ cells were 72.8%,81.1%,80.4%,respectively.While,they were 3.3%,18.7%,12.6%at each time for Bcrpl- cells(all P<0. 05 ). (2) There are more S phase cells in Bcrp1+ cells than that in Bcrp1- cells (54. 1% vs 21.1%, P <0. 05) ,while the percentage of G0/G1 and G2/M in Bcrp1 - cells were highter than those in Bcrp1 + cells (53.0% vs 44. 4% ,25.9% vs 1.5% ; all P <0. 05 ). The rate of apoptosis in Bcrp1+ cells was lower than that in Bcrp1 - cells (0. 2% vs 5.3%, P < 0. 05 ). ( 3 ) The expression of PCNA in Bcrp1 + cells was higher than that in Bcrp1- cells (3140 vs 2255, P< 0. 05 ), while the expression of caspase-3 of Bcrpl + cells was lower than that in Bcrp1 - cells ( 1970 vs 3551, P < 0. 05 ). Conclusion There are more vigor and ability of proliferation and lower rate of apeptosis in Bcrp1 + HeLa cells than those in Bcrp1 - cells ,which may be some characters of cervical cancer stem cells.

Heart Neoplasms ; diagnostic imaging ; Humans ; Lymphoma ; diagnostic imaging ; Ultrasonography

Animals ; Cells, Cultured ; Hepatocytes ; drug effects ; secretion ; Male ; Pancreatic Polypeptide ; pharmacology ; Rats ; Rats, Sprague-Dawley

ObjectiveTo evaluate prognostic factors affecting local tumor progression after radiofrequency ablation (RFA) of hepatocellular carcinoma (HCC).MethodsA total of 246 HCC patients (343 lesions) underwent RFA treatment in our department and were enrolled into this study.The average tumor size was 3.7 cm ( range 0.9 ～ 3.7 cm).Regular follow-up with enhanced CT was performed to evalutate the treatment results.Kaplan-Meier model and log-rank test were used in univariate analysis and COX regression model was used in multivariate analysis to identify risk factors for local tumor progression.ResultsThe local tumor progression rate was 11.4％ (39/343 lesions),and the average time from initial RFA to local tumor progression was 12.0 months.Univariate analysis indicated tumor size ( P ＜0.001 ),close to intrahepatic vessels ( P ＜0.001),tumor boundary ( P =0.020),pathological grade( P =0.010) and CEUS before RFA ( P =0.001) as risk factors for local progression.The following factors were identified as independent prognostic factors for local tumor progression by multivariate model:tumor size (P ＜ 0.001),isolated or close to intrahepatic vessels( P ＜0.001) and CEUS before RFA(P =0.018).ConclusionsTumor size,CEUS before RFA and close to intrahepatic vessels are the most important factors for local progression after RFA.Being awaring of possible risk factors for local tumor progression may increase the treatment efficacy and help to promote the use of RFA technique.

Objective To explore the effect of chromofungin (CHR), a chromogranin A (CGA) derived peptide CGA47-66, on hyper-permeability of blood brain barrier in septic mice. Methods 120 healthy male C57BL/6 mice were randomly divided into groups, with 12 mice in each group. Seventy-two mice were used for dynamic observation of the contents of water and Evan blue (EB) in brain tissue after being treated with lipopolysaccharide (LPS). Another 48 mice were divided into normal saline control group (NS group), LPS induced sepsis model group (LPS group), low-dose CHR pretreatment group (CL+LPS group), and high-dose CHR pretreatment group (CH+LPS group). The septic model was reproduced by intraperitoneal injection of 10 mg/kg LPS 0.1 mL, and the mice in NS group was given equal volume of normal saline. The mice in CL+LPS group and CH+LPS group were intraperitoneally injected with 15.5 μg/kg and 77.5 μg/kg CHR 10 minutes before LPS injection. Six hours after LPS injection, 4 mL/kg of 2% EB was injected via caudal vein, the contents of water and EB in brain tissue were determined, and EB immune fluorescence in brain tissue was determined to assess the changes in permeability of blood brain barrier. Brain pathology was observed with hematoxylin and eosin (HE) staining. Results With the extension of time after LPS injection, the contents of water and EB in brain tissue were gradually increased, and the time of difference with statistical significance appeared earlier when compared with that of control group in the contents of water than that in EB contents (3 hours and 6 hours, respectively). The contents of water and EB in brain tissue in LPS group were significantly increased as compared with NS group [water content: (79.77±0.62)% vs. (78.28±0.44)%, P < 0.01; EB content (μg/g): 13.87±4.50 vs. 7.13±1.76, P < 0.05]. CHR pretreatment with either of two dosages could reverse the increase in water and EB contents in brain tissue induced by LPS, and the effect was more significant in CH+LPS group [water content: (78.15±0.73)% vs. (79.77±0.62)%, EB (μg/g): 7.09±2.59 vs. 13.87±4.50, both P < 0.05]. It was shown by EB fluorescence observation that the fluorescence signal displayed only in the meninges in NS group, and EB fluorescence was widely distributed in brain parenchyma in LPS group, indicating that the EB leakage in LPS group was more marked than that of NS group. In CHR pretreatment groups, EB fluorescence was decreased in brain parenchyma, indicating that EB leakage was significantly less marked, while it was more obvious in high dose CHR group. It was shown by HE staining that cerebral blood vessel structure was intact in NS group, and the gap around blood vessel was not significant increased. On the other hand, brain structure in LPS group appeared loose, with widening of small perivascular spaces and obvious edema. Brain edema in CHR pretreatment groups was improved as compared with that of the LPS group, and it was more apparent in high dose CHR group. Conclusions LPS induced change in blood brain barrier permeability in mice in a time-dependent manner. Exogenous CGA derived peptides CHR can inhibit LPS induced hyper-permeability of blood brain barrier in septic mice, thus reduces brain edema, protects the brain tissue, and the effect is more obvious with a high dose of CHR (77.5 μg/kg).

Objectves To investigate the effectiveness and safety of bronchoalveolar lavage for the treatment of neonatal pulmonary atelectasis under ultrasound monitoring.Methods Thirty-two neonates diagnosed with pulmonary atelectasis by lung ultrasound,and hospitalized in the Neonatal Intensive Care Unit of Bayi Children's Hospital,the General Hospital of the Chinese People's Liberation Army between July 2014 and June 2016,were included in this study.Bronchoalveolar lavage was performed in all the patients by injection of lavage fluid (0.9％ NaC1 or 0.9％ NaCl plus ambroxol hydrochloride and/or exogenous pulmonary surfactant) 1.5 to 3.0 ml via tracheal intubation.Lung ultrasonography was performed immediately after each lavage to reveal the status of lung recruitment.Repeated lavage one to three times made up of one course of treatment.The bronchoalveolar lavage could be performed for one to two courses daily according to the status of atelectasis recovery.Medical records were reviewed to analyze descriptively the effectiveness,side effects and complications of the bronchoalveolar lavage.Results Bronchoalveolar lavage was significantly effective in 25 patients (78.1％) with disappearance of pulmonary atelectasis after one course of treatment;effective in five cases (15.6％) with disappearance or reduction of atelectasis after two or three courses;with a total effectiveness rate of 93.8％(30/32).Bronchoalveolar lavage was ineffective in two cases (6.2％) with no remarkable change in atelectasis after three courses of treatment.Vital signs were stable in all the infants during the bronchoalveolar lavage,and no adverse effects and complications occurred.Conclusions Bronchoalveolar lavage is effective for the treatment of neonatal pulmonary atelectasis under ultrasound monitoring,and it is easy to operate and with no adverse effects and complications,and thus worth of clinical application.

AlM:To study and investigate the change situation of trace elements and body comprehensive immune state of patients with viral keratitis.METHODS:Sixty-two patients with viral keratitis in our hospital from December 2011 to February 2014 were selected as observation group, 62 healthy persons with health education at the same time were the control group, then the serum and tear Zn, Cu, cellular immunity and erythrocyte immunity of two groups were compared, and the detection results of observation group with different types and severity degree were compared.RESULTS:The serum and tear Zn of observation group was all lower than that in control group, serum and tear Cu was higher than that in control group, cellular immunity and erythrocyte immunity indexes were all worse than that in control group, the detection results of observation group with mild, moderate and severe infection had significant differences (P<0. 05), while the detection results of observation group with herpes simplex keratitis and herpes zoster keratitis had no significant differences (P>0. 05).CONCLUSlON: The change of trace elements and body comprehensive immune state of patients with viral keratitis are obvious, and the severity degree for the detection levels of keratitis are greater.