Application of new evaluation system based on virtual simulation system in experimental teaching of functional science / 中华医学教育探索杂志

Objective:To explore the application effect of a new evaluation system based on virtual simulation system in the evaluation of functional science experiment teaching.Methods:The data of students' learning in the 2019-2020 academic year were collected, and the impact of using virtual simulation teaching system on the achievement of teaching goals under the new teaching evaluation standard was comparatively analyzed. Questionnaire survey was conducted to study students' evaluation on the virtual simulation teaching system. SPSS 22.0 was used for chi-square test.Results:The students who used the new formative evaluation standard had a virtual academic excellence rate of 75.49% (308/408), while the unused students had an excellence rate of only 32.22% (135/419), with significant differences ( P<0.01). The number of virtual simulation items required for different teaching objectives were 4, 11 and 14, respectively, and the corresponding students' virtual simulation system outstanding rate was 99.19% (246/248), 93.14% (380/408), 84.72% (488/576), with significant differences ( P<0.01). And 93.8% (348/371) students thought the learning of the virtual simulation system could help improve the success rate of the experiment, and 93.26% (346/371) of the students believed that it had improved the ability to analyze and deal with unexpected problems in the experimental class. Conclusion:The new evaluation system based on the virtual simulation system can promote the improvement of the experimental teaching quality of functional science.

Improvement of a mouse model of valproic acid-induced autism / 南方医科大学学报

OBJECTIVE@#To establish an improved mouse model of valproic acid (VPA)-induced autism that better mimics human autism.@*METHODS@#We established mouse models of autism in female C57 mice by intraperitoneal injection of sodium valproate either at a single dose (600 mg/kg) on day 12.5 after conception (conventional group) or in two doses of 300 mg/kg each on days 10 and 12 after conception (modified group), and the control mice were injected with saline only on day 12.5. The responses of the mice to VPA injection, the uterus, mortality rate, and abortion rate were compared among the 3 groups. The morphology and development of the offspring mice were assessed, and their behavioral ontogeny was evaluated using 3- chambered social test, social test, juvenil play test, and open field test.@*RESULTS@#The mortality and abortion rates were significantly lower in the modified model group than in the conventional group ( < 0.01). Compared with those in the control group, the offspring mice in both the conventional group and the modified group showed developmental disorders ( < 0.05). The mortality rate of the newborn mice was significantly lower in the modified group than in the conventional group with a rate of curvy tail of up to 100% ( < 0.001). The offspring mice in both the modified group and conventional group exhibited autism-like behavioral abnormalities, including social disorder and repetitive stereotyped behavior ( < 0.05).@*CONCLUSIONS@#The mouse model of autism established using the modified method better mimics human autism with reduced mortality and abortion rates of the pregnant mice and also decreased mortality rate of the newborn mice.

Observations on the Therapeutic Effect of Electrothermal Acupuncture on Ankylosing Spondylitis and Its Impact on IL-1 and IL-6 / 上海针灸杂志

Objective To investigate the clinical efficacy of electrothermal acupuncture in treating ankylosing spondylitis.Method Sixty patients were randomly allocated to treatment and controlgroups, 30 cases each.The treatment group received electrothermal acupuncture and the control group took methotrexate plus sulfasalazine.The extent of chestexpansion, the severity of sacroiliac joint tenderness, the number of tender joints and morning stiffness time were examined,Schober's testscores at different time points were recorded and interleukin-1 (IL-1) and interleukin-6 (IL-6) contents were measured before and after 4 and 8 weeks of treatment.Result In the treatment group, there were statistically significant differences in the extent of chestexpansion, the severity of sacroiliacjoint tenderness, the number of tender joints, morning stiffness time andSchober's testscores after 4 and 8 weeks of treatment compared with before treatment (P0.05). ConclusionElectrothermal acupuncture has a marked therapeutic effect onankylosing spondylitisand is of high safety.The mechanism of electrothermal acupuncture treatment forankylosing spondylitismay be related to its regulating IL-1 and IL-6 levels in the body.

Practice and thinking of problem based learning in physiology teaching / 中华医学教育探索杂志

Introduction of problem-based learning (PBL) teaching is the demand of teaching reform.Teaching and research section of physiology in Chongqing medical university implemented PBL teaching throughout the whole process of clinical medicine undergraduate education.The overall quality of students and the teaching quality were improved by constructing a new mode suitable for physiology teaching,focusing on training students' active learning ability and stimulating students' enthusiasm for learning.

Study on functional recovery of hypoxic-ischemic brain injury by Rg1-induced NSCs / 中国中药杂志

<p><b>OBJECTIVE</b>To observe the effect of Rg1-induced NSCs in treatment of neonatal rat model with hypoxiaischemia.</p><p><b>METHOD</b>The neonatal rat model of HIE was established and assessed by using TTC staining and behavioral observation, then Rg1-induced NSCs was transplanted into the neonatal rat of HIE by lateral ventricle injection. Water maze test and somatosensory evoked potential were detected to observe brain function and the immunohistochemistry was done to assess growth and differentiation about transplanted NSCs a month after transplanted.</p><p><b>RESULT</b>The transplantation of Rg1-induced NSCs could significantly shorten incubation period, swimming distance, exploration time of target quadrants of water maze test and incubation period and amplitude of somatosensory evoked potentials. Additionally, the concentrated expression appeared in the hippocampus and grew around the ischemic injury area in transplantation group.</p><p><b>CONCLUSION</b>Transplantation of Rg1-induced NSCs play a better role in the treatment of neonatal HIE rats.</p>

Study on mechanism of ginsenoside Rg1-induced human neural stem cells differentiation by genechip / 中国中药杂志

<p><b>OBJECTIVE</b>The molecular targets of ginsenoside Rg1-induced neural stem cells (NSCs) differentiation were screened by genechip.</p><p><b>METHOD</b>7th day following ginsenoside Rg1 induced human neural stem cells to neurons the gene expression was observed by genechip. The purpose gene and signal transduction pathways were selected by the data calculations, and then confirmed by western blot and immunohistochemical method.</p><p><b>RESULT</b>7th day following Rg1-induced NSCs differentiation, there were about 675 different genes, 255 genes of which were up-regulated and 420 genes down-regulated obviously. Meanwhile the ERK1/2 (extracellular signal-regulated protein kinase) in MAPK (mitogen-activated protein kinase) pathway was related with the NSCs differentiation. The Western blot and immunohistochemistry detection confirmed that ERK 1/2 protein and its phosphorylation were significantly increased, which can be blocked by PD98059 (ERK1/2 inhibitor). In addition, differentiation rate of NSCs was also decreased obviously in ginsenoside Rg1-induced differentiated NSCs when ERK blocker PD98059 was used.</p><p><b>CONCLUSION</b>ERK1/2 is an important molecular target in ginsenoside Rg1-induced NSC differentiation. The selected differentially expressed genes by genechip may provide new clues to study of ginsenoside Rg1-induced NSCs differentiation.</p>