Research and practice of entrepreneurial practice in cultivating innovative ability of medical laboratory technology students / 中华医学教育探索杂志

Setting up the innovative and entrepreneurship education and teaching system is the important content of the current university education reform. Through the idea of leading innovation with entrepreneurial practice, we have implemented a series of education reforms in the students of medical laboratory technology, reformed the teaching methods and content, set up the tutors for undergraduates and improved the scientific research ability of students. The results show that the education reforms have enhanced the ability and sense of innovation, providing a good reference for the reform of innovation and entrepreneurship education in medical laboratory technology.

Recent advances in the bio-production of human milk oligosaccharides 2'-FL and 3-FL / 生物工程学报

Human milk oligosaccharides (HMO) are important immunoactive components found in breast milk. Scientific research proves that HMOs are significantly beneficial for infant health. 2'-fucosyllactose (2'-FL) is the major component of HMO, which obtained growing attentions from food industry. Besides, 3-fucosyllactose (3-FL) is another important fucosyllactose and it has a similar synthetic route comparing to 2'-FL. Thus, research of the two HMO components has interactive effects for each other. Recently, numerous publications are available for 2'-FL and 3-FL. The microbial cell factory is able to massively produce fucosyllactose via an efficient way, which will show considerable influences in dairy industry. In this paper, we review recent studies on 2'-FL and 3-FL, and discuss their prospects according to published literature and patents.

Development of a sandwich ELISA for detecting 3AB non-structural protein of foot-and-mouth disease virus / 生物工程学报

Antigenic purity is important for quality control of the foot-and-mouth (FMD) whole virus inactivated vaccine. The recommended method for evaluation the antigenic purity of FMD vaccine is to check the serum conversion to non-structural protein (NSP) 3AB antibody after 2 to 3 times inoculation of animals with inactivated vaccine. In this study, we developed a quantitative ELISA to detect the amount of residual 3AB in vaccine antigen, to provide a reference to evaluate the antigenic purity of FMD vaccine. Monoclonal antibody (Mab) of NSP 3A and HRP-conjugated Mab of NSP 3B were used to establish a sandwich ELISA to quantify the NSP 3AB in vaccine antigen of FMD. Purified NSP 3AB expressed in Escherichia coli was serially diluted and detected to draw the standard curve. The detectable limit was determined to be the lowest concentration of standard where the ratio of its OD value to OD blank well was not less than 2.0. Results: The OD value was linearly corelated with the concentration of 3AB protein within the range between 4.7 and 600 ng/mL. The correlation coefficient R² is greater than 0.99, and the lowest detectable limit is 4.7 ng/mL. The amount of 3AB protein in non-purified inactivated virus antigen was detected between 9.3 and 200 ng/mL depending on the 12 different virus strains, whereas the amount of 3AB in purified virus antigen was below the lowest detectable limit. The amount of 3AB in 9 batches of commercial FMD vaccine antigens was between 9.0 and 74 ng/mL, whereas it was below the detectable limit in other 24 batches of commercial vaccine antigens. Conclusion: the sandwich ELISA established in this study is specific and sensitive to detect the content of 3AB protein in vaccine antigen of FMD, which will be a useful method for evaluation of the antigenic purity and quality control of FMD inactivated vaccine.

Monoside antagonizes triptolide-induced hepatocyte apoptosis the anti-oxidative stress pathway / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the protective effect of monoside against triptolide-induced liver injury and explore its molecular mechanism.</p><p><b>METHODS</b>BALB/C mice treated with gastric lavage with triptolide and monoside, either alone or in combination, were examined for changes of hepatic biochemical parameters using the serological method. The growth inhibition rate of HepG2 cells treated with triptolide or monoside or both was assessed with MTT assay, and the cell morphological changes were observed using laser confocal microscopy; the expressions of the target proteins in the antioxidative stress pathway were detected using flow cytometry and Western blotting.</p><p><b>RESULTS</b>In BALB/C mice, gastric lavage of triptolide induced obvious hepatic damage. In HepG2 cells, treatment with triptolide significantly inhibited the cell growth, resulting in a cell viability as low as 72.83% at 24 h; triptolide also induced obvious cell apoptosis and cell nucleus deformation, causing an apoptosis rate of 43.1% in the cells at 24 h. Triptolide significantly reduced the expressions of Nrf2 and HO-1 proteins related with the oxidative stress pathway. Combined treatment with morroniside obviously reversed these changes, resulting in significantly decreased hepatic biochemical parameters and the liver index in BALB/C mice and in significantly lowered cell apoptosis rate, improved cell morphology, and increased Nrf2 and HO-1 protein expressions in HepG2 cells.</p><p><b>CONCLUSIONS</b>Monoside protects against triptolide-induced liver injury possibly by relieving oxidative stress.</p>

Structural equation model of the relationship between sense of coherence,social support and coping style of permanent colostomy / 中国实用护理杂志

Objective To explore the levels of sense of coherence,social support and coping style of permanent colostomy,and explicit the relationships among the three variables.the structural equation model(SEM) was used to investigate the relationship of the three variables in order to provide the theory basis for patients with permanent colostomy. Methods Self designed questionnaire,Sense of coherence scale, Medical Coping Modes Questionnaire and social support Scale were used to investigate 172 permanent colostomy patients from two grade 3 class A hospitals in Harbin. Results The total score of SOC in patients with permanent colostomy was (65.09 ± 11.71) points;The total score of social support in patients with permanent colostomy was (42.60 ± 7.26) points;the three subscales of medical coping modes questionnaire in descending sequence were avoidance, confrontation and acceptance-resignation with (18.53 ± 2.82), (17.37 ± 5.48), (9.49 ± 3.25) points. The abusive social support and coping style were significantly correlated to sense of coherence (P< 0.01 for both). Moreover, sense of coherence can be predicted directly by social support,and predicted indirectly via the mediating effect of coping style. Conclusion Effective measures should be taken to improve social support and via coping style to improve sense of coherence.

Quantitative study on high-touched object surface in different special intensive care units / 中国感染控制杂志

Objective To identify the high-touched object surface in different special intensive care units(ICUs) through the observation and statistical analysis on the number of touching with common object surfaces in different ICUs, so as to provide basis for hospital environmental management.Methods Direct observation method was used to observe the daily activities of health care workers, the number of touching with various common object surfaces was recorded, Poisson distribution was adopted to statistically analyze the data.Results The average number of touching from high to low was as follows : medical record folder(n=28.00), chair(n=18.38), emergency rescue cart(treatment cart, n=17.29), bed surface(n=13.90), intravenous infusion line(n=13.76), medical pen(n=13.38), and intravenous transfusion pump(n=11.81), these objects accounted for 64.01% of all surface touching number.Different special ICUs were slightly different, general ICU high-touch object included the first 6 categories;cardiothoracic surgery ICU included the above 7 categories besides keyboard and mouse;internal medicine ICU included the first 6 categories and mobile phone.Conclusion High-touched object surface varied with different special ICUs of the same hospital, hospital should make the corresponding disinfection management measures according to the actual situation of high-touched surface of each department, so as to reduce the incidence of healthcare-associated infection.

Reform of the three-stage experimental teaching of medical laboratory technology / 中华医学教育探索杂志

In order to adapt to the training target of medical laboratory technology professionals under the condition of five to four educational system,we reformed the experimental teaching of medical laboratory technology.The experiment teaching was divided three phases (traditional classroom teaching + simulated clinical laboratory training + clinical laboratory teaching).Classroom teaching focused on the cultivation of students' basic skills test;simulation laboratory training focused on strengthening the students' operating skills and basic post ability and professional quality;hospital laboratory teaching focused on strengthening the students' ability of medical laboratory management,test comprehensive analysis and scientific research.The reform practice of two sessions of the students showed that the students' examination skills and comprehensive quality improved significantly,which could better adapt to the social demand for technical personnel.

Clinical observation on short-term efficacy of MINE regimen for patients with recurrent and refractory NHL / 白血病·淋巴瘤

Objective To investigate the efficacy and side effects of MINE regimen, as a salvage regimen, in treating patients with recurrent and refractory intermediate grade non-Hodgkin lymphoma(NHL).Methods 45 patients failing to CHOP or CHOP-like regimen were treated with MINE regimen and every patient had received 2-6 cycles of treatment. IFO 15 g/m2, ivgtt on d1-3, combined with mesna 400 mg iv for3 times on Oh, 4h, 8h after IFO ivgtt; MIT 10 mg/m2 ivgtt on dl; VP1665 mg/m2 ivgtt on d1-3. 21-28 daysconsisted of one cycle. The therapeutic effects and side effects were evaluated according to the WHO criteria.Results In all 45 patients, 53.3 % of overall response rate were achieved CR for 9 cases, 15 cases PR, 13 cases SD and 8 cases PD. Main side effects were myelosuppression, nausea, vomit, alopecia, etc. Conclusion MINE regimen is an effective and safe salvage regimen in treating patients with recurrent and refractory intermediate grade NHL. Further clinical study on the application of MINE regimen is recommended.

Experimental Study on Hypoglycemic Effect of Yumixu(Zea mays) / 中草药

The water extract frem the style of Zea mays L.showed a therapeutic effect on diabetes caused by alloxan, and obviously reduced blood glucose level of heperglycemia induced by glucose or epinephrine in mice, but no affect in normal mice, when it was administrated orally. In addition, it could decrease cholesterin content.