Aim To investigate the effects of isoliquiritigenin(ISL) on cognition dysfunction and brain energy metabolism following repeated cerebral ischemia-reperfusion in mice.Methods Mouse models of learning and memory deficits were made by repeated occlusion of bilateral common carotid arteries and reperfusion. Step-down test and Y-maze task were used to examine the learning and memory abilities of mice. The brain energy state was analyzed by reversed-phase high performance liquid chromatogra phy. Results ISL 10, 20 and 40 mg?kg -1 ig reduced the n umber of errors and extended the latency of memory in step-down test, decreased the number of cumulated stimulation and increased the number of right choices i n Y-maze task. ISL(10, 20, 40 mg?kg -1) increased the levels of ATP, ener gy charge (EC) and total adenine nucleotides(TAN) in a dose-dependent manner. Conclusion The results suggest that ISL improves cognition dysfun ction induced by repeated cerebral ischemia-reperfusion in mice, which may be r elated to the improvement of brain energy metabolism.

Based on the comparison of medical humanistic education among The Mainland,Hong Kong and Taiwan,this article arrives at the conclusion that the gap in the field of humanity education in the Mainland is one of the important reasons that cause the ever-tenser physician-patient relationship in nowadays.So we propose the countermeasures actively.By increasing the humanity courses,changing the teaching method,reinforcing the construction of talented staff in humanity,creating the environment for the humanity education and so on,we reinforce humanity quality of medical students in order to improve our medical education.

Objective To investigate the potential infectious of the new-Bunyavirus among the blood-donors in Guiyang area.Methods A total of 1 187 blood samples and the basic data were collected from the blood center of Guizhou.The new-Bunyavirus total antibody in serum was tested by enzyme-linked immunosorbent assay(ELISA).The samples were tested repeatedly by ELSIA,and general statistics description of the samples′ data was did by Excel2007,and the age,gender,occupation and collecting time of the samples were analyzed by SPSS19.0.Results The positive rate of new-Bunyavirus total antibody among blood-donors in Guiyang was 5.31%,and the new-Bunyavirus total antibody titers was 1∶20-1∶64.The positive were tested by PCR for identifying,PCR results of all positive samples were negative.The positive rates between different genders,ages,occupations,and nationalities were not statistically significant(P>0.05),but the difference of positive rates between epidemic period and later stages of the epidemic was statistically significant(χ2=4.623,P=0.032).Conclusion There are new-Bunyavirus total antibody positive samples in blood-donors,noticing that there is a possibility of potential infection among Guiyang blood-donors and even healthy people.

Objective To investigate the correlation of father involvement with early social adaptation behaviors.Methods With social adaptation scale for infant-junior middle school' s student and a self-made questionnaire,1246 normal children,age from 16 to 72 months,were investigated.Regression analysis was performed to get the correlation of social adaptation with time and activities of father involved.Results After controlling for mother-,child- and family-related factors,the regression analysis showed that standard score of social adaptation was positively rehted with the time of father involved ( β =0.05,P=0.03 ),the time father invloved explain 12％of the variation of social adaptation.The father-child activities were related with social adaptation behavior,playing was related with work skills (β =0.09,P＜0.01 ) and socialization ( β =0.06,P＜0.05),story listening related with communication ( β =0.07,P ＜ 0.05) and self-management ( β =0.06,P ＜ 0.05 ),other activities related with self-dependence ( β =0.07,P＜0.05) and work skills ( β =0.06,P＜0.05).Conclusion The time and activities of father involved are related with children' s social adaptation.The effect of father involvement on early social adaptation is positive.

Objective To analyze the etiology in pancreatic pseudocyst (PPC). Methods Medical records were reviewed and analyzed for 366 PPC patients who were admitted in Changhai hospitals from April 2000 to December 2009 in terms. Demographic data, etiology and primary disorders of PPC patients were recorded. Results The causes of 366 patients varied as follow: gallstones in 158 patients (43.2%);idiopathic in 79 (21.6%); alcohol in 50 (13.7%); trauma in 17 (4.6%); pancreatic tumor in 9 (2.5%);hyperlipidemia in 8 (2.2%); post-operative in 7 (1.9%), other in 38 (10.3%). Depending on Atlantes classification systerm the PPCs were classified into acute PPC in 204 patients (64.2%), chronic PPC in 98 patients (30.8%) and abscess in 16 patients (5.0%). The 4 most common causes of acute PPC were gallstones, idiopathic, alcohol and trauma; the 3 most common causes of chronic PPC were gallstones,idiopathic, alcohol. Conclusions Gallstones is the main etiologic cause of the PPCs in China, followed by idiopathic and alcohol, which is significantly different with that in Western countries.

Objective To investigate the possible effects and underlying mechanisms of desferroxamine (DFO) preconditioning against hypoxia in neurons. Methods Cortical neurons were cultured in DFO under ischemia condition of oxygen-glucose deprivation (OGD). Cell viability was determined by cell counting kit-8 (CCK-8) method; apoptotic cell ratio was examined with Hoechst 33342 staining; the morphological change was observed. Middle cerebral artery was occluded with or without DFO administration to establish the cerebral ischemia rat model. Infarct sizes were examined by TIC staining, and the neurological severity score was evaluated. Meanwhile immunofluorescent staining was employed to detect the protein synthesis of hypoxia inducible factor-1 (HIF-1) and erythropoietin (EPO), RT-PCR was performed to detect the mRNA expression of HIF-1 and EPO as well Results Neuronal viability kept in 49% (OGD group was 25%, t =8. 544, P<0. 05), the rate of apoptosis was 38% (OGD group was 30%, t = 4. 409, P <0.05 ) after administration of DFO (post-DFO) , the morphology of neurons improved. In the model of focal cerebral ischenfia of 30 mg/kg group, neurological severity score was reduced, the percentage of brain infarct decreased 8.5% (t=4.649, P<0.05) 3 days post-DFO(vs control). In the 100 mg/kg group, neurological severity score was 7.44 ±0.39 (t=2.903, P<0.05 ) ,5.60±0.47 (t=10.143, P < 0.01 ) ,6.97 ±0.73 (t=3.142, P<0.05 ), the percentage of brain infarct decreased 12. 0% (t=5.056, P<0.05), 32.3% (t =10.993, P<0.01), 10.6% (t =4.385, P<0.05)2,3 and7 days post-DFO(vs control), respectively. Immunofluorescent staining found synthesis of HIF-1α and EPO in cultured cortex neurons after DFO pretreated; HIF-1α and EPO were upregulated in the neurons of rat brain after DFO pretreated. The mRNA of HIF-1α and EPO upregulated in vivo and in vitro. Conclusion DFO preconditioning can protect the brain against ischemic damage, which is related to the protective effect on neurons. The mechanism of DFO preconditioning may be involved in the expression of HIF-1α and EPO in vivo and in vitro.

Adult ; Aged ; Altitude ; Humans ; Janus Kinase 2 ; genetics ; Male ; Middle Aged ; Point Mutation ; Polycythemia ; genetics

Objective To investigate the characteristics and mechanisms of attentional bias in anxiety sensitivity individuals.Methods By using Anxiety Sensitivity Index (ASI),23 participants were included in the high score group and 20 participants were included in the low score group.Then,2 (between-subject factor:the high and low score group) ×2 (within-subject factor:the positive and negative picture) mixed design experiments were adopted.Emotional faces picture pairs were chosen as stimuli.Picture pairs were presented 100 ms in experiment 1 and 1 250 ms in experiment 2.Dot-probe task was adopted to inspect the attentional bias and the response time and correct rate were recorded.Results Experiment 1 implied the main effect of type of pictures was found in mixed design experiments(F(1,41)=4.40,P＜0.05).The reaction time of two groups in positive pictures was greater than zero((12.22±30.24) ms vs (10.07±21.55) ms).It showed input effect to positive pictures.An input effect due to the reaction time of the high score group was greater than zero to negative pictures((4.81± 17.88)ms),while the low score group tended to avoid the negative pictures ((-6.81 ±21.33) ms).Experiment 2 implied positive score was not significant between two groups (F(1,41) =0.29,P＞0.05).And positive score showed the attentional bias to some certain extent.Significant outcome was found by negative score between two groups (F(1,41) =6.41,P＜0.05).It implied that the high score group tended to avoid the negative pictures and the low score group had the tendency of input effect.Conclusion At the initial stage of attention,anxiety sensitivity individuals had the attentional bias to negative emotional faces and avoidance in the late stage of attention.It suggests that the attentional bias of anxiety sensitivity individuals may have an important effect on the development of the mental disorders.

Objective To investigate the level Ⅰb contouring,dose analysis and regional recurrence in level Ⅰb lymph node-negative (Ⅰb-negative) nasopharyngeal carcinoma (NPC) patients treated by intensity-modulated radiotherapy (IMRT).Methods One hundred ninety newly-diagnosed,Ⅰb-negative NPC patients treated by IMRT were enrolled.Level Ⅰb contouring and dose prescribing in this cohort were classified into planned prophylactic irradiation (PPI) group (56 cases) and non-planned prophylactic irradiation (non-PPI) group (134 cases).The mean dose (Dmean) of the level Ⅰb bilaterally and submandibular glands (SMGs) was recorded for comparison.Results After a median follow-up of 47 months,there was no level Ⅰb regional recurrences noted in the entire group.The mean doses of level Ⅰb and the submandibular glands were significantly lower in the non-PPI group than those in the PPI group as follows:(50.81±5.37) Gy vs (59.68±3.32) Gy for the left level Ⅰb,(51.55±5.02) Gy vs (59.66±3.85) Gy for the left submandibular gland,(51.55±5.02) Gy vs (59.66±3.85) Gy for the right level Ⅰb and (57.25±4.69) Gy vs (63.41±2.88) Gy for the right submandibular gland (all P =0.000).Conclusion In this retrospective analysis of non-randomized single institute data,it seems unlikely that PPI to level Ⅰb is necessary in Ⅰb-negative NPC patients treated by IMRT.

OBJECTIVE:To observe the clinical efficacy of Hepatocyte growth-promoting factors(PHGF) combined with Wuji baifeng pills for liver cirrhosis. METHODS:A total of 97 patients with liver cirrhosis were randomly assigned to either control group(n=32,conventional therapy) or treatment group(n=65,PHGF plus Wuji baifeng pills in addition to routine treatment).The course of treatment was 3 months for both groups. Clinical data including cardinal symptoms and signs,hepatic function,blood clotting function,hepatic fibrosis parameters,the inner-diameter of the portal vein and splenic vein(PVD,SVD),spleen thickness(SPT) measured by the color Doppler ultrasonography were monitored before and after treatment. RESULTS:After treatment,the symptoms and signs of the treatment group had better improvement than in the control group,with a markedly higher total effective rate than in the control group(84.62% vs.59.38%,P