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Objective To evaluate the effect of the traditional Chinese medicine (TCM) knowledge and skills training on non TCM community physicians in Shanghai, and provide important basis and feedback for future adjustments and training improvement.Methods The current situation of the TCM knowledge and skills training on non TCM community physicians in Shanghai was reviewed. The community physicians participated in the training courses in 2014 in Jiading district were randomly selected for investigation. The TCM theory and skills scores of all the 65 trainees were compared before and after training, a self-made questionnaire survey on assessment of training was conducted after training, and the influencing factors of training effect were analyzed. Results After training,test results of TCM theory and skills were significantly higher than before(P<0.01). According to the survey of trainees after TCM training, 84.6% thought the training was necessary,95.4% liked the teaching form, 93.9% accredited training content difficulty level,92.3% thought the training was practical, 98.5% were willing to provide Chinese medicine services for community residents, 60.0% thought training to promote the general medical work was very helpful. The existing problems were short training periods(43.1%), only 10.8% could skilled TCM appropriate technologies and 60.0% were basically master. Conclusion The TCM knowledge and skills training on non TCM community physicians in Shanghai had achieved better effect. There still were some deficiencies, which require further exploration in order to better carry out future training.
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Objective To establish case database of critical illness and explore the effect of critical case-based learning in the anesthesia teaching program as well as its influence on clinical thinking ability of students. Methods Case database of critical illness was built with foxtable software and ASAⅢ~Ⅴpatients undergoing anesthesia were included in the case database. Patients' information were recorded according to the sequence of pre-operative evaluation,intra-operative management and post-operative recovery. We designed a student questionnaire to investigate the effect of critical case-based learning. And we also compared the effect of critical case-based learning and traditional teaching on undergraduate interns, residents, and graduate students by scores of case analysis test. Data analysis used t test. Results The critical cases database is characterized by authenticity, hierarchy and for-wardness. Survey result of questionnaire shows that the proportions of students who believe critical case-based learning helps to strengthen the links of theory and clinical practice, to improve expression skills, and to promote active classroom atmosphere, solidarity and cooperation are 80%, 71.6% and 68.3%respectively. Compared with those who received traditional teaching, the residents and graduate students who received critical case-based learning get significantly higher scores in case analysis test. However, the difference of scores between undergraduate interns receiving traditional teaching or criti-cal case-based learning has no significance. Conclusion The establishment of critical cases database and its application in anesthesia teaching program have effectively improved clinical thinking ability of anesthesia residents and graduate students.
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Nisin is an antimicrobial peptide widely used in food industry. In this study, Nisin A production in Lactococcus lactis ATCC 11454 was improved by overexpression of Nisin A structural gene nisA through introducing a shuttle expression vector pMG36ek-nisA and an integrated vector pDG780-nisA into the host strain. The differences of growth profiles and Nisin A production level between the two obtained genetic engineering strains FMM1/FMM2 and the parent strain were investigated. Our results show that while the growth profile (the growth rate, biomass and pH) of FMM1 was similar to the parent strain, its Nisin A production increased 31%. In contrast, the biomass of FMM2 was notably lower than the parent strain, while its yield of Nisin A enhanced slightly. The transcription level of genes involved in Nisin A biosynthesis in both engineering strains was further detected by RT-PCR. We found that all the 11 Nisin A biosynthetic genes in FMM1 and FMM2 had a higher transcription level than those in the parent strain, and these genes exhibited more significant increasing degree of transcription level in FMM1 which hosted the autonomous replicating nisA gene. These data suggest that expression of nisA may act as a rate-limit factor in Nisin A biosynthesis. In conclusion, this work provides a new method to improve Nisin A production by increasing the transcription level of nisA, paving the way to further large-scale industrial production of Nisin A.
Subject(s)
Bacterial Proteins , Genetics , Genes, Bacterial , Genetic Engineering , Genetic Vectors , Lactococcus lactis , Genetics , Metabolism , Nisin , Genetics , Transcription, GeneticABSTRACT
Objective To investigate the effects of propofol on the release of noradrenaline ( NE) from the locus coeruleus in the brain of rabbits trying to elucidate the central mechanism of the cardiovascular inhibition induced by propofol.Methods Nine healthy male New Zealand rabbits weighing 2.0-2.5 kg were used in this study. A trocar (0.8 mm in diameter) was inserted into locus coeruleus using the stereotactic technique and fixed. Four days later push-pull perfusion of the brain was performed. 37℃ artificial cerebrospinal fluid (aCSF) was infused through the trocar at 0.1 ml?min-1 . A loading dose of propofol 2 mg?kg-1 was given i.v. followed by continuous infusion at 150 ?g?kg-1?min-1 for 30 min. The experiment was concluded at 20 min after propofol infusion. The perfusate having passed through the locus coeruleus was collected before and every 10 min during and after infusion. The NE concentration of the perfusate was measured by high performance liquid chromatography. Results The NE concentration of the perfusate from locus coeruleus significantly decreased after the loading dose and during the infusion of propofol and reached its bottom level at 10 min after loading dose. The maximal decrease was 75.5% [from (15.9 ? 3.2) pg??l-1 to (3.9?0.5) pg ? ?l-1]. Conclusion Intravenous propofol decreases the NE concentration in locus coeruleus. The cardiovascular inhibition induced by propofol may partly be explained by this central mechanism.