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Pathophysiology is a comprehensive subject, which is very important to cultivate the clinical comprehensive thinking of medical students. Pathophysiology involves a wide range of subjects and contents, and is one of the major and difficult courses in basic medicine. Based on many years of research and practice, we have developed main-line-problem-based learning (ML-PBL). ML-PBL is a diversified teaching mode, including the main line teaching method, clinical case discussion method, and the main line synopsis explaining method. The analysis of application results shows that ML-PBL teaching improves the student performance. Furthermore, ML-PBL is more conducive to cultivating the comprehensive clinical thinking ability, improving the independent learning ability, and fully mobilizing the learning initiative.
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[ ABSTRACT] Receptor type protein tyrosine phosphatase Q ( PTPRQ) is an unusual protein tyrosine phosphatase that has intrinsic dephosphorylating activity for various phosphatidylinositiol and phospho-tyrosine substrates, especially the phosphatidylinositol activity.Recent data show that PTPRQ has an important role in various biological processes and is as-sociated with some diseases.In this article, the structure and function of PTPRQ and the relationship between PTPRQ and diseases were briefly summarized.
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Objective To study the expressions of α1-AT and VEGF-C in human bronchoalveolarcarcinorrm, and the relation of the expression to the patholo~cM differentiation and clinical stage. Methods All 49 Darffin embedding samples of patients with bronchoalveolar carcinoma were studied. α1-AT and VEGF-C were detected by immunohistochemical SP method.Automated image analyzer was used to quantify α1-AT and VEGF-C expressions.Results The immunohistochemical positive stainings of α1-AT and VEGF-C in brown or dark brown were located in cytopla8m.The expression levels of α1-AT and VEGF-C were not related with the gender,age,tumor position and size,and histology subtypos(P＞0.05).It Was found that the expression of α1-AT in patients with local lymph node metastasis was significantly lower than those without node metastasis(P＜0.001).It was found that the expression of VEGF-C in patients with local node metastasis significantly higher than th08e without node metastasis(P＜0.001).There Was a negative correlation between the expression level of α1-AT and the expression level of VEGF-C in bronchoalveolar carcinoma(r=-0.324,P＜0.05).Conclusion α1-AT and VEGF-C could be secreted by bronehoalveolar carcinoma.Bronehoalveolar carcinoma with lower α1-AT expression and higher VEGF-C expression is more likely to have lymph node metastasis.Lower α1-AT expression and higher VEGF-C expression can participate in the mechanism of lymph node metastasis in carcinoma together.
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AIM and METHODS: A study of radioimmunoimaging was carried out on Kcnming mice - uterine cervical cancer (U14) using 99mTc labeled monoclonal Au14-1 with a modified Schwartaz method. RESULTS: The bio - distribution showed that radioactivity accumulated in tumor tissue at 12h after 99mTc - Au14- 1 injection in tail vein. The uptake by tumor was 4. 12 % ID/g at 2h and 8. 79 % ID/g at 24h respectively. The tumor/non - tumor (T/NT) radiocativity ratios for organs except kidneys were ranged from 2.02 to 6.71 at 24h post - injection. The image of tumor showed at 12h and clearer at 24h after injection. CONCLUSION: The quality of tumor image was relevant to the T/NT radioactivity ratios. It was demonstrated that 99mTc- Au14-1 has a good capability of localization for tumor.
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AIM: To investigate the effect of monoclonal antibody(McAb) AU_(14-1) mediated cytotoxicity against cervical cancer U_(14) cell in vitro.METHODS: MTT colorimetric assay was applied to study the McAb AU_(14-1) mediated cytotoxicity of effector cells including splenocytes,peritoneal macrophages and LAK to U_(14) cells.RESULTS: The cytotoxicity mediated by each effector cells to the U_(14) cells treated with McAb AU_(14-1) was significantly higher than those not treated with it(P