Background and purpose:Radical surgery remains the main treatment for patients with resectable gastric cancer.However,the majority of patients have advanced gastric cancer with either extensive invasion of tumor into the adjacent organs,lymph nodes or metastases when diagnosed.The advantage of neoadjuvant chemotherapy prior to surgery includes the shrinking of the cancer so that surgery becomes feasible for the patients with inoperable cancer and ultimately improve their long-term outcome.We conducted a clinical trial to evaluate the efficacy and toxicity of docetaxel(TAX),cisplatin(CDDP) and fluorouracil(5-FU) plus leucovorin(CF)as the neoadjuvant chemotherapy in the treatment of non-resectable advanced gastric cancer.Methods:From June 2003 to June 2005,12 patients with non-resectable advanced gastric cancer were treated with docetaxel/cisplatin/5-FU/CF before operation.Neoadjuvant chemotherapy regimens consisted of docetaxel(D),75mg/m~(2)(days 1),cisplatin(C),75mg/m~(2)(days 1),fluorouracil(F),500mg/m~(2)(days 1 to 5) plus leucovorin(CF),200mg/m~(2)(days 1 to 5) and were administered every 3 weeks for 2～3 cycles before operation.The immediate response and toxicity were documented for each patient.Results:9 of the 12 patients were downstaged and 8 were radically operated 4-6 weeks after the end of the neoadjuvant chemotherapy.The overall response rate was 75% with 8.3% CR and 66.7% PR,25% NC,and the ascites disappeared in 63.6%(7/11).Pathological complete response was found in 1 case.Histopathogical responses were scaled as mild,moderate and marked in 3,4 and 1 cases,respectively.The most common toxicities were bone marrow suppression,nausea,vomiting,alopecia and heptoses.The toxicities were recoverable after symptomatic treatment.Conclusions:The combination of docetaxel,cisplatin,fluorouracil plus leucovorin(CF) is a very effective and well-tolerated regimen as neoadjvant chemotherapy for the patients with non-resectable advanced gastric cancer.

OBJECTIVE:To promote the implementation of drug“zero profit”,and ensure the interests of both doctor and pa-tient. METHODS:Through introducing the related information of drug management and compensation mechanism of drug“zero profit”,the advices were put forward for the heavy financial burden,shortage of hospital income and medical accessibility,etc. RESULTS&CONCLUSIONS:Drug“zero profit”could promote the reform of public hospital. If both doctor and patient could ob-tain benefits,it is very important to strictly enforce compensation mechanism and increase the government investment. Meanwhile, medical service price should be appropriately adjusted to reflect technical value,knowledge value and risk value of medical staff;preparyment of the total amount should be propeled by project,disease,head and other payment methods to control unreasonable medical expenses growth;mechanical of the hospital operating service should be improved to consciously reduce the dependence on drug profits.

ObjectiveTo investigate the early diagnosis and treatment of pleuropulmonary blastoma in children. Meth-ods The progress of pleuropulmonary blastoma from type 1 to type 3 was retrospectively analyzed.Results The male infant had no obvious abnormality in chest X-ray at 18 days. At one year old, X-ray iflm of the chest showed cystic lesions near hilum of the left lung (about 5 cm × 4 cm × 4 cm). The congenital cystic adenomatoid malformation was considered and an operation resection was suggested. However, it had been rejected by his parents. At 3 years and 2 months old, chest X-ray and CT showed left lung had a solid cystic lesion, the volume was signiifcantly enlarged, the back side was solid and the upper part had a large gas cavity. Two months later, the patient had asthmatic suffocation. The chest CT showed the tumor was completely solid. Pleuropulmonary blastoma type 3 was considered. The patient received the conventional chemotherapy after operation excision, and was followed up for 1 year. No recurrence was observed after the treatment.Conclusions Type 1 pleuropulmonary blastoma and congenital cystic adenomatoid malformation are hard to be differentially diagnosed. Early diagnosis and treatment of type 1 pleuropulmo-nary blastoma can improve the prognosis.

Objective To study the relationship among the area of transverse section of radial artery, the major axis length of the ellipse with same centroid as transverse section, the maximum centroid displacement in the direction parallel with skin surface in a cardiac cycle and width of pulse tracing. Methods ECG, pressure phygmograms and ultrasound images of transverse section of radial artery of 40 patients with different width of pulse tracing and 20 healthy persons were collected synchronously with a new-type sphymograph. On the basis of images analysis with MATLAB 7.0.1, image characteristics of transverse section of radial artery and centroid motion locus of pulse tracings with different width in a cardiac cycle were observed and analyzed. Results Between pulse tracings with different width, there were significant differences in the area of transverse section of radial artery, the major axis length of the ellipse with same centroid as transverse section and the maximum centroid displacement in the direction parallel with skin surface in a cardiac cycle. Conclusions The mean, maximum and minimum value of the area of transverse section and the major axis length of ellipse and the maximum centroid displacement can be used to discriminate width of pulse tracing.

Objective:To evaluate the microtensile bond strength of total-etch or self-etch adhesives to caries-affected dentine versus normal dentine. Methods:Twenty-four extracted human molars with mesial coronal carious lesions extending into mid-dentin were selected. The softened carious dentine was removed with a slow-speed, carbon-steel bur and Caries Marker was used as guides. Prepared cavity in sound dentine in the distal coronal part of the identical teeth was used as the control. Surfaces were bonded with either Prime&Bond NT, Adper Single Bond 2, Adper Prompt or XenoⅢ,according to manufactures' recommendations. A crown was built up using resin composite(Filtek P60).After storage in water (37 ℃,24 h),teeth were vertically serially sectioned into 1.0 mm thick slabs and trimmed to yield 1 mm2 test area that contained either caries-affected or normal dentine. Then the specimen were tested in tension in an Instron machine at 0.8 mm/min.The bonding interface between the dentine and adhesives was qualitatively evaluated under the observation of scanning electron microscope(SEM). Results:Two total-etch adhesives yielded higher bond strengths than the two self-etching systems. And all the adhesives attained higher strengths in normal than in caries-affected dentine(P

Objective To assess the tolerance of preoperative carbohydrate-rich beverage,to determine its effect on postoperative insulin resistance and analyze its potential mechanism.Methods Thirty-two patients undergoing elective colorectal cancer resection were recruited to this randomized controlled study and assigned to two groups at random.Patient in control group was fasted before operation,while patient in study group was given oral water.Homeostasis model assessment(HOMA)indexes,activity of PTK,and mRNA and(or)protein expressions of PKB,PI3K and GluT4 were measured before and(or)immediately after surgery.Furthermore preoperative well-beings of patients were studied.Results Among well-beings,feeling of thirst,hunger and anxiety tended to be better in patients receiving carbohydrate-rich beverages compared with fasted ones(P0.05).Conclusion Preoperative consumption of carbohydrate-containing fluids is safe and effective.Provision of carbohydrate energy source prior to surgery may attenuate immediate postoperative insulin resistance.A carbohydrate-rich drink enhances insulin action at the time of onset of anaesthesia or surgery by activating three kinases named PTK,PI3K,PKB which are key enzymes in pathway of insulin signal transduction.It is likely to explain the effects on postoperative insulin resistance.

AIM: To establish the GC-fingerprint chromatogram of Mylabris. METHODS: Mylabris from Guizhou Province was used under the conditions of Agilent Technoligies DB-1 capillary column and the program 160℃—2℃/min—210℃(10min), and the GC fingerprint chromatogram of Mylabris was set up. RESULTS: The methodological evaluation showed that this method had a good reproducibility, common peaks' relative areas of different samples were different. CONCLUSION: This method is reliable to evaluate the quality of Mylabris.

Dens invaginatus is a relatively rare tooth malformations,this paper reports a case of lateral incisor with typeⅢdens invaginatus with periradicular pathosis and without pulp involvement.The tooth was treated by root canal therapy and followed up for one year,the prog-nosis was good.

The right internal quality control rules are really important for improving the quality of patient results report in clinical laboratory.In order to look for faster and simpler tools that will help laboratories select the right internal quality con-trol rules for their own applications,recently Westgard introduced a newer tool “Westgard Sigma Rules”which is quicker and easier to use than previous tools.And it is very easy to figure out the right internal quality control rules by using West-gard Sigma Rules.This article introduced the characteristics and usage of original Westgard Rules and sigma metrics graph, and focusing on the application methods and practices of Westgard Sigma Rules which is the combination of original West-gard Rules and sigma metrics graph.Once the sigma quality of the tests and methods in laboratories are calculated,the West-gard Sigma Rules diagram can make it easy to select the right control rules and the right number of control measurements.

Although the key role of External Quality Assessment schemes ( EQAS ) in the standardization/harmonization process has been clear from the start, it has never been totally implemented, mainly due to the lack of commutable materials, the difficulty target values and acceptable range.EQAS may also improve standardization/harmonization by proposing rules for the post-examination phase.Improvements in standardization and harmonization will really be able to work under the joint efforts of stakeholders.