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Objective To explore the training mode of tutorial system for undergraduates majoring in pharmacy based on CDIO (conceive,design,implement and operate).Methods 72 undergraduates majoring in pharmacy from the Fourth Military Medical University were randomly divided into two groups,and they were taught by CDIO based tutorial system and general tutorial system,respectively.By using the Graphpad prism 5.0 software and adopting the method of independent sample unpaired t test,we made a comparative analysis of two groups in the project's scoring.In addition,the questionnaire survey was conducted to evaluate the teaching effectiveness,whose data was expressed by a percentage.Results The average score of the experimental group was (116.8 ± 7.73),which was 43.3％ higher than that of the control group (81.51 ± 6.08),and the difference was statistically significant (P=0.001).The questionnaire survey showed that the average satisfaction rate of the experimental group was above 90％.Conclusion Excellent teaching effect was obtained based on CDIO training mode,and the ability of students in practice,team cooperation,problem-solving and innovative thinking,professional ethics and a serious attitude on scienceare promptly enhanced.
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Through the discussion of the basic components and development of experimental animal ethical education and the effect of strengthening animal ethical education on comprehensive experimental teaching of preclinical medicine,this paper analyzed the status of animal ethical education in the comprehensive experimental teaching of preclinical medicine,and pointed out the medical students' existing problems of animal ethical education in the comprehensive experimental teaching of preclinical medicine,including that they didn't understand the real meaning of animal experiments and the experimental attitude was not correct;they ignored the feelings of experimental animals and increased the pain of experimental animals;school did not provide specialized animal ethics education and related animal ethics research was inadequate.And this paper put forward the countermeasures aiming at the as follows,teachers need to expound animal ethics knowledge before the experiment,strengthen experimental operation management and standardize the operation of animal experiments;the teachers should teach by personal example and verbal instruction and pay attention to animal ethical education in the experimental teaching process.
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Basic medicine teaching is an important part of the medical student cultivation.Its contents are boring and complicated,and difficult to learn and remember.In the process of basic medicine teaching,educational researchers have been trying to combine a variety of teaching methods and apply them flexibly.They want to be able to fully mobilize the enthusiasm of the students.However,it is difficult to obtain a satisfactory result because of the limited number of course hours.The micro-media are open,interactive and no time limit.Therefore,combining micro-media with a variety of teaching methods in the teaching processis expected to create a new teaching mode of basic medicine and achieve a good teaching result.
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Objective To investigate the effects of different tidal volume ventilation on acute lung injury in rats. Methods Thlrty-two normal Wistar rats were randomly divided into four groups:control group,low tidal volume group(L- V_T),conventional tidal volume group(C-V_T)and high tidal volume group(H-V_T).The pathologic changes of the lungs were observed under macrography,light and electron microscope.The blood gas analysis(PaO_2),the counts of neutrophils (PMN),the levels of protein and the myloperoxidase(MPO)activities in bronchoalveolar lavage fluid(BALF)were measured by biochemical methods respectively.Results There were no distinct pathological differences between L-V_T group and control group under macrography,light and electron microscope.In the C-V_T and H-V_T groups,there were different degree of lung injuries under light and electron microscope,their PMN,MPO activity and protein level in BALF were significantly higher than those of control and L-V_T groups and their PaO_2 were significantly lower than those of control and L- V_T groups(P＜0.01,P＜0.05).The MPO activity and the protein level in BALF were also significantly higher than those of C-VT group(P＜0.01)Of the above indexes,there were no statistical differences between L-V_T group and control group(P＞0.05).Conclusion Conventional tidal volume ventilation alone,without any lung-protective strategy, could produce injuries to the normal lung tissues,while low tidal volume ventilation hadn't effects on them.The injury effects produced by mechanical ventilation was closely related to the recruitment and activation of neutrephils in the lung.
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Objective To investigate the expression of histamine in the cardiac sympathetic fibers from the guinea pig superior cervical ganglion and its coexistence with norepinephrine so as to provide morphological evidence for histamine as a cardiac sympathetic neurotransmitter.Methods Biotinylated dextranamine(BDA) anterograde tracing and immunofluorescence histochemical staining for histamine/norepinephrine were applied.Results After injection of BDA into the superior cervical ganglion,BDA labeled sympathetic fibers in the left and right atria and ventricle were observed.Meanwhile,the tracing fibers proved histamine-like immunoreactive or both histamine and norepinephrine-like immunoreactive.Conclusion Histamine is expressed in the cardiac sympathetic fibers from the guinea pig superior cervical ganglion and coexisted with norepinephrine.
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The intracellular signal transduction pathway of histamine H 3 receptor was reviewed. The modulatory effect to some neurotransmitters on cardiovascular system and the therapeutic potential of histamine H 3 receptor agonist was summarized.
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Objective To detect the location of histamine in peripheral sympathetic nerves of guinea pig. Methods Histidine decarboxylase mRNA was detected using in situ hybridization histochemistry with specific oligonucleotide probe,while histamine and tyrosine hydroxylase were detected using double labeled immunohistochemistry with anti-histamine antibody and anti-tyrosine hydroxylase antibody in the superior cervical ganglia of guinea pig. Results The histidine decarboxylase mRNA hybridization signal were detected in both of large and small cells.The TH immunoreactive substance distributed in cytoplasm steadly,but lacked in the nuclei,while the histamine immunoreactive substance distributed in cytoplasm nearby the plasmalemma.After chemical destroy of the guinea pig SCG′s neuron with 6-OHDA,the immunoreactive materials were hardly detected.Conclusion Because the histidine decarboxylase is the only enzyme which catalyzes histidine into histamine,histamine may be synthesized and coexisted with monoaminergic neurotransmitters in the superior cervical ganglia of guinea pig.