Objective To study the effects of enriched environment on the capacity of learning and memory and expression of brain derived neurotrophie factor(BDNF) expression of CA1 hippocampus in Wistar rats. Methods 20 male Wistar rats were raised from weaning(21 days old) to young adulthoed(50 -60 days old) in either an enriched or normal environment. The ability of learning and memory was measured with the Morris water maze test,and the expression of BDNF of CA1 hippocampus neuron was detected by immunohistochemistry. Results During Morris water maze test, the mean latency in enriched environment group was significantly shorter than that in the normal control group(24.37±5.45)s Vs (31.28±5.39)s;the time taken to cross the target in enriched environment group was significantly more than that in the normal control group(3.38±0.79)Vs (2.21± 0.49);the swimming distance of platform quadrant increased in the enriched environment group, and the decreased gray intensity of BDNF expression in CA1 hippoeampus was found in the enriched environment group. Conclusions Enriched environment can improve the capacity of learning and memory of the rats, which were realized may be through BDNF pathway.

OBJECTIVE:To improve the quality of ADR reports. METHODS:By using intensive hospital monitoring mode, ADR reports before and after the application of the system would be collected and factors as report quantity,type,time and quality of reports were analyzed statistically. RESULTS:It provided rapid reporting function after the implementotion of the system. Total quantity of reported ADR cases increased from 589 to 748,and the proportion of all the serious ADR reports increased from 62.8%to 11.76%. The score of repert quality increased from 93.64 to 98.36,the proportion of time-out reports increased from 94.05% to 97.33%,with statistical significance (P<0.05). CONCLUSIONS:Rapid reporting system of ADR in the hospital is beneficial to improve the efficiency and guarantee the quality of the reports. It also can expand the coverage of the monitoring network,and can lay the foundation for drug safety scientific evaluation and monitoring.

Objective To explore the effects of community-based comprehensive intervention on social function and quality of life of patients with bipolar disorder. Methods 244 bipolar disorder patients were assigned into control group (n=119) and intervention group (n=125). The control group accepted antipsychotics only, and the intervention group accepted community-based comprehensive intervention in addition. They were assessed with Social Disability Screening Schedule (SDSS) and Generic Quality of Life Inventory-74 (GQOLI-74) before and 6, 12 months after treatment. Results The SDSS score was lower (P<0.05) and the GQOLI-74 score was higher (P<0.05) in the intervention group than in the control group. Conclusion Community-based comprehensive intervention can improve the social function and quality of life of patients with bipolar disorder.

Objective: To explore the effects of allogeneic bone marrow mesenchymal stem cells (BMSCs) on polarization of peritoneal macrophages isolated from rats with sepsis induced by endotoxin/lipopolysaccharide (LPS). Methods: (1) BMSCs were isolated, cultured and purified from 5 SD rats with whole bone marrow adherent method. The third passage of cells were collected for morphologic observation, detection of expressions of stem cell surface markers CD29, CD44, CD45, and CD90 with flow cytometer, and identification of osteogenic and adipogenic differentiation. (2) Another 45 SD rats were divided into sham injury group (SI, n=5), LPS control group (LC, n=20), and BMSCs-treated group (BT, n=20) according to the random number table. Rats in groups LC and BT were injected with LPS (5 mg/kg) via tail vein to induce sepsis; rats in group SI were injected with the same amount of normal saline to simulate the damage. At post injury hour (PIH) 1, rats in group BT were given 1 mL BMSCs (2×10⁶/mL) via tail vein injection; rats in another two groups were injected with equal volume of phosphate buffer saline. Five rats in group SI at PIH 24 and in groups LC and BT at PIH 6, 12, 24, and 48 were sacrificed to harvest lung tissue for pathological observation with HE staining. In addition, rats in group SI at PIH 24 and in groups LC and BT at PIH 24 and 48 were simultaneously performed with intraperitoneal injection of low-glucose DMEM. Then peritoneal fluid was harvested to culture peritoneal macrophages. Flow cytometer was used to assess the positive expression of cell makers of macrophages including CD68 (making gate), CD11c, and CD206 in group SI at PIH 24 and in groups LC and BT at PIH 24 and 48. Data were processed with one-way analysis of variance and LSD test. Results: (1) The third passage of cells showed uniform fiber-like shape similar to fibroblasts. These cells showed positive expressions of CD29, CD44, CD90 and weak positive expression of CD45. They were able to differentiate into osteoblasts and adipocytes. These cells were identified as BMSCs. (2) At PIH 24, the structure of pulmonary alveoli of rats in group SI was clear and complete with no congestion or inflammatory cell infiltration. At PIH 6, the structure of pulmonary alveoli of rats in groups LC and BT was clear with a small amount of inflammatory cell infiltration, slight congestion and pulmonary interstitial thickening. At PIH 12, the inflammatory responses in lung tissue of rats in group LC were more severe than those in group BT with a large amount of inflammatory cell infiltration, serious congestion, and obvious pulmonary interstitial thickening. The pathological results of rats in group BT at PIH 12 was consistent with the results at PIH 6. At PIH 24, the pathological results of rats in groups LC and BT were similar to the results at PIH 12. At PIH 48, the structure of pulmonary alveoli tissue of rats in group LC was still severely disrupted, with a large number of inflammatory cell infiltration and congestion in lung tissue, but pulmonary interstitial thickening was slightly alleviated than before. The condition of rats in group BT nearly recovered to that in group SI. (3) At PIH 24, the positive expression rate of CD11c in peritoneal macrophages of rats in group LC [(83±10)%] was close to that in group BT [(87±7)%, P>0.05], and they were both significantly higher than the rate in group SI [(55±12)%, with P values below 0.01]. The positive expression rate of CD11c in peritoneal macrophages of rats in group LC [(59±11)%] at PIH 48 was close to that in group SI at PIH 24 (P>0.05), and they were both significantly higher than the rate in group BT [(20±11)%] at PIH 48 (with P values below 0.01). At PIH 24, the positive expression percentages of CD206 in peritoneal macrophages of rats were similar among the three groups (with P values above 0.05). The positive expression percentage of CD206 in peritoneal macrophages of rats in group SI at PIH 24 was close to that in group BT at PIH 48 (P>0.05), and they were both significantly lower than the percentage in group LC at PIH 48 (with P values below 0.01). Conclusions BMSCs can reduce the pathological inflammatory responses in the lung of rats with sepsis and inhibit peritoneal macrophages from polarizing into M1 phenotype, whereas they can not promote macrophages to polarize into M2 phenotype.

The computer information technology that has penetrated into every aspect of our lives, can not only assist the screening of drugs, but also simulate the effect of drugs. At present, computer-aided technologies have been used to screen aptamers, which play an important role in improving the screening efficiency and screening high affinity binding aptamers. This review summarized the screening methods of aptamers through computer-aided sequence evaluation, structural analysis and molecular docking.
Aptamers, Nucleotide ; Computers ; Molecular Docking Simulation ; SELEX Aptamer Technique/methods*