1.Establishment and Development of the Educational System for Part-time Graduate Students in Chinese Medicine Education
Yafei SHI ; Shijiu QIU ; Bin CHEN
Chinese Journal of Medical Education Research 2005;0(06):-
The part-time graduate student education is the important part of the graduate student system in Chinese medicine education.Developing and regulating the part-time graduate student education in Chinese medicine is helpful to the consummation of Chinese medicine graduate student system,the cultivation of the high lever talents in Chinese medicine,and keeping up with international graduate student educational system.
2.Construction on curricular system of profession degree for master-disciple postgraduates of traditional Chinese medicine
Caixia ZHANG ; Zhihui YANG ; Huafeng PAN ; Yafei SHI
Chinese Journal of Medical Education Research 2012;11(5):472-474
A detailed analysis on the curriculum status of profession degree for the fourth batch of master-disciple postgraduates in Guangzhou University of traditional Chinese Medicine (TCM) was provided.The basic idea on the construction of the curriculum system was proposed in view of strengthening TCM clinical thinking,skills and scientific research capacity.The course content was optimized combining the classic TCM theory with clinical skill practice course and innovate teaching methods depending on the inservice and remote learning of students were used.A relatively perfect professional degree curriculum system for master-disciple postgraduates of TCM was built.
3.Correlation between cognitive impairment and cerebral atherosclerosis in patients with acute ischemic stroke
Yafei ZHOU ; Jing SHI ; Cuiping SI ; Yang XU ; Zhongrui YAN
International Journal of Cerebrovascular Diseases 2015;23(4):260-264
Objective To investigate the correhtion between cognitive impairment and cerebral atherosclerosis in patients with acute ischemic stroke.Methods Acute ischemic stroke patients without cognitive impairment were recruited before symptom onset.The Montreal cognitive assessment (MoCA) was used to evaluate the cognitive function.Magnetic resonance imaging (MRI) was used to identify the infarct locations and sides.Magnetic resonance angiography,CT angiography and digital subtraction angiography were used to identify atherosclerotic arteries.Resul~ A total of 101 patients with acute ischemic stroke were enrolled,including 75 (74.3%) with cognitive impairment.The proportions of age (54.54 ± 12.59 years vs.64.43 ± 10.37 years;t =-3.960,P <0.001),years of education ≤6 years (50.7% vs.11.5%;x2 =12.257,P < 0.001),and cerebral atherosclerosis (89.3% vs.50.0%;x2 =18.137,P <0.001) of the cognitive impairment group were significantly higher than those of the normal cognitive function group.Multivariate logistic regression analysis showed that cerebral atherosclerosis was an independent risk factor for cognitive impairment in patients with acute ischemic stroke (odds ratio 1.720,95% confidence interval 1.005-2.942;P=0.048).MoCA score was negatively correlated with the offending vessels (r=-0.365,P< 0.001) and the most severe vessels of atherosclerotic degree (r=-0.243,P =0.014).Conclusions Most patients with acute ischemic stroke had cognitive impairment in the early stage after onset,and the MoCA scores was negatively correlated with the degree of cerebral atherosclerosis.Cerebral atherosclerosis was an independent risk factor for cognitive impairment in patientswith acute ischemic stroke.
4.Analysis of clinical distribution of streptococcus penumoniae and drug susceptibility test results
Yafei YIN ; Meng SHI ; Ling LU ; Yong ZHOU
Chongqing Medicine 2017;46(7):913-915
Objective To understand the clinical distribution situation of streptococcus penumoniae (SP) and drug susceptibility test results to provide a basis for the clinical diagnosis,treatment and prevention of SP infection.Methods Totally 416 nonrepeat strains of SP were isolated during 2010 to 2015.Their identification and drug susceptibility test were performed by using the ATB Express bacterial identification system.The results were interpreted according to the standard of CLSI 2014 edition.Results In these 6 years,SP showed the isolation peak in spring and winter;the detection rate of respiratory tract specimens reached more than 90 %;the young children and elderly people were predominant;SP maintained high sensitivity to penicillin,amoxicillin,etc.,the difference in the sensitivity rate and non-sensitivity rate had statistical significance(P<0.05);but SP showed high level non-sensitivity to clindamycin,erythromycin,etc.,the difference in the sensitivity rate and non-sensitivity rate had no statistical significance (P>0.05).Conclusion Although β-lactam antibiotics such as penicillin can still be used as the first choice of therapy,but PISP and PRSP show the increasing trend year by year;therefore the antibacterial drugs should be selected according to the drug susceptibility test results.
5.Effect of Jiawei sinisan on the levels of some amino acids in hippocampus of rats with chronic stress
Can YAN ; Lili WU ; Zhiwei XU ; Yafei SHI ; Yi PAN
Chinese Journal of Pathophysiology 2000;0(10):-
AIM: To observe the effect of Jiawei sinisan (JWSNS) on some amino acids in hippocampus of rats with chronic stress. METHODS: Wistar rats were randomly divided into 3 groups: control, model and JWSNS group. OPA (HPLC) was adopted to detect the contents of amino acids in hippocampus. RESULTS: The contents of Glu and Asp in hippocampus of model group increased significantly ( P
6.Inhibition effects of monoclonal antibody C225 on breast cancer stem cells
Yafei SHI ; Mingzhu HUANG ; Fengchun ZHANG ; Yanyun ZHANG ; Mingzhi CAO
Journal of Shanghai Jiaotong University(Medical Science) 2009;29(11):1311-1315
Objective To explore the inhibition effects of epidermal growth factor receptor (EGFR) antagonist monoclonal antibody cetuximab (C225) on breast cancer stem cells in human breast cancer cell line MCF-7.Methods The effects of C225 on the proliferation of breast cancer cell line MCF-7 were detected by MTT assay. MCF-7 cells were cultured to generate primary mammospheres, and were divided into control group, C225 group, epidermal growth factor (EGF) group and EGF + C225 group according to whether or not the culture media contained exogenous EGF and C225.Thirteen days after culture, the volume and number of mammospheres of these four groups were observed, and mammosphere-forming efficiency ( MFE) was calculated. The percentages of CD44~+ CD24~- cells in mammospheres of these four groups and in routinely cultured MCF-7 cells were determined by flow cytometry. Results The inhibition rate on MCF-7 cells increased with the concentration of C225.Compared with control group, the volume of mammospheres in C225 group significantly decreased, and MFE and percentages of CD44~+ CD24~- cells in mammospheres significantly decreased [(0.61 ±0.04)% vs (1.44±0.09)%, P<0.01; (3.50±0.29)% vs (9.07 ±0.52) % , P<0.01]. Compared with EGF group, the volume of mammospheres in EGF + C225 group significantly decreased, and MFE and percentages of CD44~+ CD24~- cells in mammospheres significantly decreased [ (0.68 ± 0.04) % vs (1.61 ± 0.05) % , P < 0.01; (4.00 ± 0.58) % vs (10.47 ± 0.79) % , P < 0.01]. The percentage of CD44~+ CD24~- cells in routinely cultured MCF-7 cells was (2.03 ±0.15) % , and was significantly different from those in EGF group and control group (P < 0.01). There was no significant difference in volume of mammospheres, MFE and percentage of CD44~+ CD24~- cells in mammospheres between EGF group and control group (P >0.05). Conclusion C225 has significant inhibition effects on CD44~+ CD24~- cells in MCF cells.
7.Drug resistance analysis of bacteria isolated from a hospital of Chengdu from 2012 to 2013
Yafei YIN ; Chunxiao HU ; Meng SHI ; Yong ZHOU
International Journal of Laboratory Medicine 2015;(21):3133-3136
Objective To learn drug resistance of bacteria isolated from a hospital of Chengdu from 2012 to 2013 .Methods From 2012 to 2013 ,39 732 clinical specimens were collected ,ATB Express half‐automatic bacteria identification system were used to identify the bacteria ,and paper diffusion(K‐B) method was used to do drug sensitive test ,results were judged according to Clini‐cal and Laboratory Standards Institute 2012 standard interpretation ,Whonet5 .6 was used to do statistical analysis .Results In the bacteria isolated from this hospital in 2012 and 2013 ,gram‐positive bacteria accounted for 27 .7% and 37 .4% respectively ,gram negative bacteria accounted for 72 .3% and 62 .6% .The top five pathogenic bacteria were E .coli(16 .3% ,20 .3% ) ,Pseudomonas aeruginosa(11 .5% ,11 .7% ) ,Staphylococcus aureus (11 .3% ,11 .4% ) ,Acinetobacter baumannii(10 .6% ,9 .3% ) ,Klebsiella pneu‐moniae(14 .7% ,12 .0% ) .The detection rates of Methicillin‐Resistant Staphylococcus(MRSA) were 56 .2% ,47 .7% .The positive rates of producing extended spectrum βlactamases(ESBLs) of E .coli and Klebsiella pneumonia accounted for 41 .0% ,32 .2% and 21 .0% ,10 .8% ,which were high sensitive to carbon penicillium alkene antibiotics and amikacin .Susceptibility monitoring results showed that the drug resistance of Acinetobacter baumannii was rising ,and the drug resistant of Pseudomonas aeruginosa to most antibiotic were decline .Conclusion The top five bacteria isolated from this hospital in 2012 and 2013 are given priority to gram‐negative bacteria ,in addition to the drug resistant trend of Acinetobacter baumannii increased slightly ,the drug resistant of other four common bacteria were decline .Clinical attention should focus on positive ESBLs ,E .coli ,Klebsiella pneumoniae ,MRSA and M ulti‐resistant bacteria .
8.Research on effect of central 5-HTergic system in early-onset depression
Liming ZHENG ; Yafei SHI ; Haomeng WU ; Zhiwei XU
Chinese Pharmacological Bulletin 2015;(1):19-22,23
Nowadays the pathogenesis of early-onset depression is still uncertain. Only SSRIs are currently approved for clinical use as antidepressants in children and adolescents, indicating that 5-HT is the most important neurotransmitter involved in the dis-ease. Current studies with regard to central 5-HTergic system in early-onset depression mainly focus on 5-HT synthesis deficien-cy, 5-HT transportation dysregulation, as well as the earlier mat-uration of 5-HT system than norepinephrine system. 5-HT precur-sor tryptophan malabsorption and dysregulation of 5-HT synthesis can contribute to 5-HT deficiency. Moreover, the 5-HTTLPR low-expressing genotypes may increase the risk of early-onset de-pression. It is necessary to make preclinical and clinical studies more widely and deeply about the effect of central 5-HTergic sys-tem in early-onset depression in future.
9.Effects of rosuvastatin on matrix metalloproteinase 2 expression and cell migration of rat vascular smooth muscle cells
Yangbo XING ; Hangyuan GUO ; Yafei SHI ; Fangfang YANG ; Yufang QIU ; Biao YANG ; Fang PENG
Chinese Journal of Geriatrics 2011;30(7):593-597
Objective To observe the effects of rosuvastatin on the homocysteine (Hcy)-induced expression of matrix metalloproteinase 2 (MMP 2) and cell migration in rat vascular smooth muscle cells (VSMCs), and to explore the possible mechanism of Hcy-induced atherosclerosis and the role of statins in reversing atherosclerosis. Methods In one cell culture plate, the cultured rat VSMCs were incubated with different concentrations of Hcy (0, 50, 100, 500, 1000 μmol/L and 5000 μmol/L) in vitro for 24 h, 48 h and 72 h. And in another cell culture plate, the different concentrations of rosuvastatin (10-9, 10-8, 10-7, 10-6, 10-5 mol/L and 0 mol/L) were added to the cultured rat VSMCs (while the concentration of Hcy was 1000 μmol/L). The MMP 2 expression and enzyme activity were determined by gelatin zymography and Western blotting. The effects of Hcy and rosuvastatin on cell migration and invasiveness of VSMCs were observed. Results Hcy (50-5000 μmol/L) increased the protein expression, and Hcy (50-1000 μmol/L) increased enzyme activity of MMP 2 significantly. But Hcy (5000 μmol/L) inhibited activity of MMP 2 (F=9.31, 6.44 and 5.97, all P<0.05). Rosuvastatin (10-9-10-5 mol/L) inhibited Hcy-induced expression and enzyme activity increasing of MMP 2. The counts of cell migration of VSMCs were 18.32±2.17, 32.68±4.34, 44.75±4.08, 61.39±5.21, 79.74±5.54 and 90.78±5.83, while the concentration of Hcy was 0, 50, 100, 500, 1000 μmol/L and 5000 μmol/L respectively (F=5.31, P<0.05). The counts of cell migration of VSMCs were 79.74±5.54, 62.53±6.41, 48.37±5.66, 31.41±4.79, 19.27±3.62 and 11.17±2.33, while the concentration of rosuvastatin was 10-9, 10-8, 10-7, 10-6 and 10-5 mol/L respectively (F=4.99, P<0.05). Rosuvastatin could decrease the stimulation of Hcy-induced migration of VSMCs. Conclusions Hcy can influence the MMP 2 protein expression/activity in VSMCs, and rosuvastatin can inhibit augmentation of Hcy-induced MMP 2 expression/activity and migration of VSMCs. It may be one of the multiple-effects of rosuvastatin reducing atherosclerosis.
10.Effects of Weipixiao on Ultrastructure of Gastric Mucosa Capillaries in Rats with Precancerous Lesions of Gastric Cancer
Yumei YUAN ; Huafeng PAN ; Yafei SHI ; Chao WANG ; Lili GUO ; Haiwen LI ; Ziming ZHAO ; Jinling REN
Journal of Guangzhou University of Traditional Chinese Medicine 2015;(4):648-651
Objective To observe the effects of Weipixiao on the ultrastructure of gastric mucosa capillaries in rats with precancerous lesions of gastric cancer ( PLGC). Methods The rats were randomized into six groups, including normal group, model group, Vatacoenayme Tablets group ( 0.2 g·kg-1·d-1) , and high-, middle-, and low- dose Weipixiao groups ( 15, 7.5, and 3.75 g·kg-1·d-1 respectively) . The rats received spontaneous intake of N-methyl-N’-nitro-nitrosoguanidine ( MNNG, 200 μg/mL) solution combined with irregular diet and intragastric administration of purgative herbs Xiao Chengqi Decoction ( 2 mL, containing 1 g/mL crude drug) for 18 weeks to induce spleen-deficiency PLGC. The pathological changes in gastric mucosa and the ultrastructure of gastric mucosa capillaries were observed under the transmission electron microscope. Results The model has been established successfully. Transmission electron microscopy results in the model group showed as severely swollen endothelial cells of gastric mucosa capillaries, severely-narrowing or even blocked vascular lumens, rough and discontinuous basement membrane, and swollen, degenerated or even absent pericytes. And the ultrastructure of gastric mucosa capillaries in high-, middle-, and low- dose Weipixiao groups were improved to some degrees, the effect of low-dose Weipixiao group being the best. Conclusion The improvement of the mucosal microcirculation of spleen-deficiency PLGC rats may be one of the pathohistological mechanisms of Weipixiao for spleen-deficiency PLGC.