Mesenchymal chondrosarcoma originated in the primitive mesenchymal tissue .It usually devel-ops in the short bones such as hand ,foot and body bone ,while extremeIy rare in the orbit .We report a case of mesenchymal chondrosarcoma of the orbit which is confirmed by pathology .

Objective To preliminarily explore the delineation of clinical target volume in intensity-modulated radiotherapy for para-aortic lymph node metastases in patients with gynecological malignancies.Methods A retrospective analysis was performed on 56 gynecological tumor patients with para-aortic lymph node metastases who were admitted to our department from January 2010 to September 2016.The number and distribution of metastatic para-aortic lymph nodes were determined by imaging method.Results A total of 108 positive para-aortic lymph nodes were found in the 56 patients,with 1-4(mean,2) positive para-aortic lymph nodes per patient.The mean diameter of positive para-aortic lymph nodes was 2.3 cm (1.2-4.0 cm).A total of 20 metastatic lymph nodes (19%) were located at the L4 level,38(35%) at the L3 level,44(41%) at the L2 level,and 6(5%) at the L1 level.There were 71 metastatic lymph nodes (66%) at the left side of the para-aortic region,20 metastatic lymph nodes (19%) between the abdominal aorta and the vena cava,and 17 metastatic lymph nodes (15%) at the right side of the inferior vena cava.Conclusions For patients with gynecological malignancies,nodal contouring for the para-aortic region should not be defined by a fixed circumferential margin around the vessels.The left side of the para-aortic region should be covered adequately;the upper target should be extended up to the renal artery,and needs to be further extended for patients who have nodal involvement near the renal arteries and veins.

Objective:To analyze the relationship among smoking, levels of homocysteine (Hcy), cystatin C (CysC), C reactive protein (CRP) and coronary heart disease (CHD) onset in young people.Methods:A total of 152 patients, who received selective coronary angiography because of chest pain in our hospital, were enrolled, and all subjects were <45 years old.According to examination results, they were divided into CHD group (n=100) and non-CHD group (n=52).Clinical data were analyzed in both groups, and Logistic multi-factor regression analysis was used to analyze independent risk factors for CHD in young people.Results:Compared with non-CHD group, there were significant rise in percentages of men (30.8% vs.65.0%), smoking (46.1% vs.68.0%) and hypertension (34.6% vs.51.0%), levels of CysC[(0.85±0.16) mg/L vs.(1.34±0.28) mg/L], CRP [(1.26±0.85) mg/L vs.(6.93±0.85) mg/L] and Hcy[(7.16±1.16) mol/L vs.(20.85±2.16) mol/L],P<0.05 or <0.01;multi-factor Logistic regression analysis indicated that male, hypertension, smoking, Hcy, CysC and CRP were risk factors for CHD in young people (OR=1.34~3.42, P<0.05 or <0.01).Conclusion:Male, smoking, total cholesterol, homocysteine, Cys C and C reactive protein are risk factors for CHD in young people.Therefore, these risk factors should be eliminated, or its risk should be reduced.

Objective To construct secreting type human TRAIL(shTRAIL) gene vector pcDNA3.1-HRE/Egr1-shTRAIL mediated by hypoxia/radiation double sensitive promoter,and observe the effect of hypoxia and radiation on shTRAIL.Methods HRE upper and lower strands were gotten by chemical synthesis,double strands HRE was gotten by PCR;pMD19T-Egr1 was digested by SacⅠ and Hind Ⅲ,then Egr1 was obtained,pshuttle-shTRAIL was digested by Kpn Ⅰ and BamH Ⅰ,then shTRAIL was obtained;HRE/Egr1 double sensitive promoter mediated shTRAIL expression vector pcDNA3.1-HRE/Egr1-shTRAIL was constructed by gene recombination technique,it was identified correctlly by enzyme digestion,PCR and sequencing.A549 cells were divided into normal,hypoxia(0.1%),irradiation(6 Gy) and hypoxia + irradiation groups.Results After enzyme digestion by BamH Ⅰ and Sma Ⅰ,the fragments which lengthes were 1284 bp and 4 998 bp,2 292 bp and 3 990 bp were obtained;the vector was amplified by PCR with Egr1 and shTRAIL primer,the products which lengthes were 469 bp and 820 bp were obtained;pcDNA3.1-HRE/Egr1-shTRAIL was sequenced,the result was same to designed,this demonstrated that the construction was right.The vectors were transfected into A549 cells of adenocarcinoma of lung,the expression levels of shTRAIL mRNA and protein were increased after treated with hypoxia and radiation,it had statistically significant differences compared with normal group(P

ObjectiveTo assess the current situation of postgraduates knowledge about medical research design and optimize the curriculum setting of research design.MethodsAn investigation was carried out in the postgraduates of 2011 using questionnaires in a medical university..The questionnaire ineluded basic information of participants and cognition of basic methods of research design.ResultsA total of 473 postgraduates participated in the investigation.Among them,311 systematically learned medical statistics before enrollment,and 275 ( 58.14％ ) once participated in scientific researches.Most of them ( ＞80％ ) knew about the 10 basic methods of research design listed in the questionnaire,but only a few of them were familiar with them,and some even didn't know about the methods.ConclusionWe should pay attention to the culture of scientific research thought in statistical design,strengthen the practice of research design teaching,and the curriculum of research design should be led into undergraduate course.

Objective:To study whether sacral lymph nodes should be included in the target volume delineation for those patients with early (stageⅠB-ⅡA) uterus cervix cancer during postoperative radiotherapy. Methods:Forty-six patients with early uterus cervix cancer were given postoperative three dimensional conformal radiation therapy (3D-CRT) in our department for one month after radical resection. The patients were randomly divided into two groups. The sacral lymph nodes were not included in the target volume delineation in the treatment group. But they were delineated in control group. All the patents had no radiotherapy-related contraindications and signed the consent agreement. The patients were followed up. The local controlling rate and the incidence and degree of radioactive proctitis were compared between the two groups. Results:The local controlling rate of the two groups had no significant difference(t=0.000, P=1.000). The doses received by the 5% and 95% volume of the rectum(V_5, V_95), the average dose, and the minimum dose had significant difference between the two groups(t_(V5)=2.169, P_(V5)=0.041; t_(V95)=4.036, P_(V95)=0.001;t_(mean)=2.236, P_(mean)=0.036; t_(min)=2.265, P_(min=0.034), but the maximum dose received by the rectum had no obvious difference (t_(max)=0.518, P_(max)=0.610). The incidence of radioactive proctitis had significant difference between the two groups(t=2.174, P=0.190). Conclusion:For the early uterus cervix cancer patients who have recurrent risk after radical surgery, sacral lymph nodes should not be included in the delineation of target volume during 3D-CRT in order to decrease the incidence of radioactive proctitis.

To investigate the relationship between serum glutamic acid decarboxylase antibody (GAD-Ab)titer and the first-phase insulin release (1PH)in newly-diagnosed type 2 diabetic patients. 1053 newly-diagnosed type 2 diabetic patients were divided into 3 groups, including 71 individuals with GAD-Ab≥1 U/ml (positive group), 171 individuals with GAD-Ab ranging from 0 to 1 U/ml (negative-1 group), and 811 individuals with GAD-Ab=0 (negative-2 group). IPH was evaluated by arginine stimulation test. In the patients of negative-2, negative-1, and positive groups, the respective values of 1 PH were subsequently decreased significantly (P< 0. 01) , and the detection rates of the decreased insulin secretion were 74. 85%, 87. 13%, and 100%, respectively. Stepwise regression analysis indicated that disease duration, GAD-Ab titer, HbA_1C, and body mass index were the major independent contributing factors. The titer of GAD-Ab has an important impact on 1PH defect in type 2 diabetic patient. Detection of GAD-Ab not only provides an evidence for clinical type, but would also be helpful in determining the islet β-cell function.

Objective To probe the influence of electron beam radiotherapy in different manners using different tissue equivalent boluses on skin and lung.Methods Adult female cavia cobayas were randomly divided into four groups as control group,fuU-time with bolus group,half-time with bolus group and without bolus group.Acute-irradiation animal models were established using electron beam in different manners with or without 0.5 cm tissue equivalent bolus.Pathological changes in lung,hair vesicle and fibroblast cell count were analyzed 40 clays after irradiation.Results The radiation dermatitis in the group with bolus was slighter than that of the group without bolus,but the radiation pneumonia was reverse.With bolus,the radiation dermatitis of haft-time group was slighter than that of full-time group.The injury repair of half-time group was more active than full-time group.Conclusions The treatment of haft-time bolus could protect lung without serious skin complications.

Objective To investigate the effect of solute cartier organic anion transporter family, member 1B1 (SLCOIBI) gene variants on the response to therapy with repaglinide in type 2 diabetes. Methods 100 newly-diagnosed type 2 diabetic patients were treated with repaglinide during a course of 48 weeks. Anthropometrie parameters and indices related to glucose metabolism were measured periodically. Genotypes of SLCO1B1 D130N and V174A were detected by PCR-restriction fragment length polymorphism (RFLP) and sequencing respectively. Results Eighty-nine patients accomplished the 48-week follow-up visits. D130N variant in SLCO1B1 gene was associated with repaglinide treatment, DD genotype had better HbA1C lowering effect than N allele carrier [△HbA1C: (-2.29±0.23) % vs (-1.49±0.21)%, P<0.05]. No association was detected between D130N and the other effects of repaglinide on glucose metabolism related phenotypes. Conclusion D130N variant in SLCO1B1 gene is associated with the response to repaglinide treatment in patients with type 2 diabetes. DD homozygotes had a better effect than N allele carriers.

Objective To evaluate the clinical significance of glycated albumin (GA), a parameter in reflecting recent glycemic control, in patients with impaired glucose regulation (IGR) and newly diagnosed diabetes mellitus. Methods From January to June 2007, 516 subjects who accepted oral glucose tolerance test (OGTT) in out-patient department were randomly enrolled, including 130 with normal glucose regulation (NGR), 154 with IGR and 232 with diabetes mellitus. The fasting plasma glucose (FPG), 0.5 h plasma glucose (PG), 1hPG, 2hPG, 3hPG after glucose loading, HbA1c and GA were measured in each subject. The correlation between GA and the other parameters were analyzed. Results There were significant differences in the values of GA among NGR, IGR and diabetes mellitus groups (all P < 0.01), but no difference in the values of HbA1c between NGR group and IGR group (P > 0.05). GA was positively correlated with HbA1c (r = 0.75, P < 0.01). Stepwise regression analysis showed that FPG, 2hPG and body mass index were the major independent contributing factors. Conclusion The combination of plasma glucose with GA measurement may be helpful in evaluating the status of glucose metabolism.