RESUMEN
Since the Guangdong alliance launched the centralized procurement of Chinese patent medicine， manufacturers have engaged in fierce price competition to obtain the qualification for selection. In order to ensure that manufacturers have lowered the price without decreasing quality， the evaluation criteria for the quality of Chinese patent medicine is constructed on the basis of the characteristics of traditional Chinese medicine. The evaluation criteria consist of the production process and therapeutic effect evaluation. The evaluation indicators involve raw materials， processing and clinical use covering the whole life cycle of Chinese patent medicine. The evaluation of production process includes 3 secondary indicators （the quality of traditional Chinese medicine， the quality of traditional Chinese medicine decoction pieces and the quality of Chinese patent medicines） and 13 tertiary indicators （standardized production， quality inspection， processing specifications， technical processes， safety risk control， etc.）， which fully reflect the quality control of key links in the production of Chinese patent medicine. The therapeutic effect evaluation includes 5 secondary indicators （theoretical origin of formulation， proactive research by production enterprises， evidence-based medical evidence， clinical use， and technological embodiment） and 18 tertiary indicators （theoretical sources， post-market effectiveness re- evaluation， clinical guidelines， expert consensus， etc.） to assess the quality and efficacy of Chinese patent medicine from multiple perspectives and levels. This study is a useful supplement to the scheme of centralized procurement of Guangdong alliance， which can not only provide data support for selecting “low-cost and high-quality” Chinese patent medicine， but also provide information reference for hospitals to make procurement decisions.
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Objective To investigate the clinical value of glypican-3 (GPC3) in the diaganosis of hepatocellular carcinoma (HCC),the contents of GPC3 in the serum and tissues of HCC patients were detected.Methods ELISA and immunohistochemical staining were applied to detect GPC3 expressing level in the serum and tissues in 79 cases with HCC,35 cases with post-hepatitis cirrhosis and 30 normal liver specimens and the resuits were compared.The influential factor of GPC3 content in the patients with HCC was analyzed by logistic regression model.Results The serum level of GPC3 in patients with HCC was (143.02±40.26) μg/L which was signifcantly higher than that in patients with post-hepatitis cirrhosis [(6.15±4.31) μg/L] and healthy controls [(4.47±3.22) μg/L] (all P ＜ 0.01).The expression levels of GPC3 was signifeantly higher in post-hepatitis cirrhosis tumor-adjacent tissue and tumor-distant tissue.The expression levels of GPC3 was significantly positively correlated with tumor presence of distant mestasis (x2 =13.182,P ＜ 0.0) and clinical stage (x2 =4.250,P ＜ 0.05),and not correlated with sex,age,tumor size and the level of AFP inserum (P ＜ 0.01).Conclusion GPC3 is specific the diagnosis of HCC.The joint diagnosis of GPC3 and AFP will improve the sensitivity of HCC.Therefore,GPC3 could as a biomarker for evaluating HCC condition and prognsis.
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Objective To investigate the best exposure condition for reducing the radiation dose of the chest radiography and obtaining the good quality of images. Methods With different tube voltage (kVp), tube current & time (mAs), and focus-film distance(FFD) adopted, X-ray detecting phantom was exposed by means of automatic exposure control(AEC). The dosage absorbed in skin was detected; Spatial resolution capacity, low contrast resolution capacity and low contrast sensitive degree were tested. The space and density resolution capacity were tested. The chest image quality was appraised by the way of visual observation and the measure of film density. Results The different kVp and FFD were related to the emitting skin dose (ESD), the higher kVp and the farther FFD follows the lower ESD; the higher or lower mAs has no effect on the image resolution capacity , but it had effect on image noise. The density value and seeing effect of chest film with low dose had reached good image density and needs of diagnostics. Conclusion Under the condition of 120 kVp high voltage, FFD150cm, AEC reduced density and adjusting to the processing parameters of the CR chest images, the radiation dosage of the chest computed radiography can be reduced efficiently and the good quality of images can be obtained.