Objective To detect the best phase and best tube voltage for the diagnosis of small (diameter ≤ 3 cm) clear cell renal cell carcinoma with dual-energy dual-phase CT.Methods Image manifestations of 27 patients with small (diameter ≤ 3 cm) ccRCCs confirmed by pathology were retrospectively analyzed.All subjects underwent dual-energy biphase (early corticomedullary and delayed phase) scan preoperatively.Two senior radiologists analyzed the images in consensus.The definition of images in different phases and with different tube voltage was classified into 4 levels and was compared by Wilcoxon and Friedman test.The attenuation of the lesions and the adjacent renal parenchyma,the SD value of the anterior abdomen fat were measured.The contrast noise ratio (CNR),lesion kidney ratio (LKR) and the early corticomedullary phase and delayed phase value were calculated.They were all compared with oneway ANOVA.Results The score of definition of lesions in early corticomedullary phase at 80 kV,140 kV and average-weighted 120 kV were 3.30 ± 0.87,2.81 ± 0.92 and 3.11 ± 0.85,respectively,which in delayed phase were 3.70 ±0.54,3.30 ±0.82 and 3.52 ±0.64,respectively.Definition of lesions was better in delayed phase than that in early corticomedullary phase (Z =-2.296,-2.446 and-2.392,respectively; P ＜ 0.05).Either in early corticomedullary phase or in delayed phase,CT value,noise value and CNR were the highest on 80 kV images,which were(302 ± 80)HU,(16.2 ± 2.2) and (4.1 ± 3.4) in corticomedullary phase and (152 ± 31) HU,(16.4 ± 2.7) HU,and (4.7 ± 1.7) in delayed phase.The change of lesion attenuation between early corticomedullary phase and delayed phase on 80 kV,140 kV and averageweighted 120 kV images were (150 ± 76),(72 ± 33) and (96 ± 46) HU,respectively.There was significant difference among the three groups (F =4.541,P ＜ 0.01).Conclusions Delayed phase scan is in favor of small clear cell renal cell carcinoma display.80 kV images are the best for detecting and qualitation of small clear cell renal cell carcinoma when compared with 140 kV and the average-weighted 120 kV images.

Objective To understand non stomatology undergraduates'strategies for learning stomatology and to study the reform on this course.Methods The learning strategies of 560 undergraduates majoring in clinical medicine from grade 2007 were investigated s and ten related factors like learning attitudes were investigated by learning strategies scale.Correlation analysis and linear regression analysis were applied to deal with research data.Results Most undergraduates were lack of strategies in learning stomatology.Related coefficient between 10 factors and academic scores ranged from 0.197 to 0.401,existing positive correlation(P＜0.05).Determination coefficients(R2)of attitude,motivation,time management and learning auxiliary means were 0.146,0.167,0.223and 0.122 respectively,which can be used to predict the scores of examination.Condusions Non stomatology undergraduates'strategies for learning stomatology is a vital factor influencing their academic scores.It's necessary for teachers to improve their teaching methods considering students'professional characteristics and learning strategies.

Objective To explore the depression status of the liver transplant recipients after the surgery and the impact factors.Method Forty two liver transplant recipients were assessed at 5 different time points(1 month,6 months,12 months, 24 months,36 months after the transplantation)using general information questionnaire(GIQ),social support rating scale(SSRS) and self-rating depression scale(SDS).Results After the transplantation,the longer recipients lived,the less depression they underwent.Age and post-operative objective support are the two major factors on depression status of the liver transplant recipients Conclusion The clinical and community nurses may pay attention to the mind state of the recipients after liver transplantation,and provide mental nursing in time and social support to prevent and improve the state of their depression.

Objective To explore the relation between the Integrin alpha 2 (ITGA2)-807 C/T gene and diabetic nephropathy (DN) in Han nationality in northern part of Guangxi. Methods 206 patients with type-2 diabetes were selected from the hospital. According to the diagnosis of diabetic nephropathy (DN) standards, 206 patients with type-2 diabetes were divided into diabetes without diabetic nephropathy (T2DM) and DN group, and 90 healthy people were selected as normal control (NC) group. The plasma lipid and lipoprotein levels were measured by routine method.And the genotypes and allele frequencies distribution were assessed by Polymerase chain reaction-restriction fragment length Polymorphism (PCR-RFLP). Results compared with the control group,plasma total cholesterol(TC),triglyceride(TG) and low density lipoprotein-cholesterol (LDL-C) levels in DN group blood were significantly higher (P < 0.05). ITGA2 gene - 807 - c/T genotype distribution and allele frequency in DN group were statistically significant (P<0.05). CT+TT genotypes and T allele frequency in DN group were significantly higher than control group (P<0.05).The relative risk for DN in subjects carrying T allele was 1.72 times of that in the C allele carriers(OR = 1.72, 95% CI = 1.72 ~ 2.517). And compared with control group and the DN group, ITGA2 gene-807-c/T genotype distribution and allele frequency differences in T2DM group had no statistical significance (P > 0.05). Conclusions The polymorphism of ITGA2-807C/T gene is associated with the development of DN in Han nationality in northern part of Guangxi. The T allele may be a genetic susceptibility genes for DN, which may promote the level of TC high expression and increase the risk of DN.

This paper is aimed to construct a 3D model of arterial vessels system of digital rat. Firstly, the special injection medium was perfused into the arterial blood vessels of Sprague-Dawley rat; the quality of perfusion through the digital radiography system was evaluated at the same time. Then we used the sectional anatomy imaging system and achieved the digital rat atlas of sectional anatomy (sectional anatomy images were captured at 100 microm intervals, with the resolution of 4,917 x 3,446 x 24 bit and in a total of 1,464 slices). Finally, the 3D model of arterial vessels system of digital rat was constructed by segmentation, and the visualization programs were developed on Visual C+ + and Visualization ToolKit (VTK). By use of this model, the 3D microstructure of arterial system of digital rat can be obtained accurately. Remarkably, it will benefit the study of the blood vessels system on laboratory rat.
Animals ; Arteries ; anatomy & histology ; Image Processing, Computer-Assisted ; methods ; Imaging, Three-Dimensional ; methods ; Male ; Models, Anatomic ; Models, Animal ; Rats ; Rats, Sprague-Dawley

The aim of this study is to investigate the effects of electrical stimulation ES) on the induction of rat bone marrow mesenchymal stem cells (rBMSCs) to differentiate into cardiomyocyte-like cells in vitro. The third or fourth-generation of the rBMSCs was randomly divided into three groups, i. e. ES group, 5-Azacytidine (5-Aza) group, and control group. Those in the ES group with complete medium were exposed to 1,2,4 and 6V, 2Hz, 5ms ES for 2h everyday,lasting for 10d. Those in the 5-Aza group were induced by 10 micromol/L 5-Aza for 24h, then the medium was changed to complete medium without 5-Aza. Those in the control group were only cultured with complete medium. The growth status and morphological features of rBMSCs were observed by inverted phase microscope. The mRNA expressions of GATA4, a-actin, ACTN2 and TNNT2 were determined by Real-time fluorescent quantification PCR, and the protein expression of TNNT2 was detected with immunofluorescence staining. The results showed that the mRNA expression level of the GATA4, a-actin, ACTN2 and TNNT2 and the protein expression level of the TNNT2 were significantly higher in the ES group and 5-Aza group, compared to those in the control group(P<0. 05). It suggested that ES could induce rBMSCs differentiation into cardiomyocyte-like cells in vitro.
Animals ; Bone Marrow Cells ; cytology ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; Electric Stimulation ; Female ; Male ; Mesenchymal Stromal Cells ; cytology ; Myocytes, Cardiac ; cytology ; Rats ; Rats, Sprague-Dawley

Objective To investigate the effect of Echinococcus granulosus cyst fluid(EgCF) on the cytoskeletal rearrangement and phagocytosis and the migration of macrophages induced by lipopolysaccharide(LPS). Methods Peritoneal macrophages of C57BL/6 mice were isolated and cultured in vitro, and divided into control group and LPS group and LPS combined with EgCF group. After 48 hours of treatment, filamentous actin (F-actin) changes were observed with rhodamine-labelled phalloidin staining and fluorescence microscopy; Transwell^TM chamber was used to test cell migration ability and flow cytometry to test cell phagocytosis. After 1 hour of treatment, PI3K and AKT, phosphorylated AKT (p-AKT), Rac1, guanosine triphospho-Rac1 (GTP-Rac1), WASP and Arp2 protein expressions were detected with Western blot analysis. Results Compared with the control group, after LPS stimulation, macrophages were deformed significantly; pseudopodia increased; actin cytoskeleton increased and was more distributed in pseudopodia; the ability of migration and phagocytosis were significantly improved, and the expression of PI3K, p-AKT, GTP-Rac1, WASP and Arp2 proteins significantly increased. EgCF treatment caused cell shrinkage and disappearance of pseudopodia protrusions of LPS-activated cells, and led to the reduced phagocytic and migratory of cells; the protein expression of PI3K, p-AKT, GTP-Rac1, WASP and Arp2 decreased significantly compared with the LPS group. Conclusion LPS induces the migration and enhances phagocytosis of macrophages while EgCF inhibits these effects, which is related to actin cytoskeleton rearrangement.
Mice ; Animals ; Lipopolysaccharides/pharmacology* ; Echinococcus granulosus/metabolism* ; Proto-Oncogene Proteins c-akt ; Cyst Fluid/metabolism* ; Mice, Inbred C57BL ; Macrophages/metabolism* ; Phagocytosis ; Actins/metabolism* ; Phosphatidylinositol 3-Kinases/metabolism* ; Guanosine Triphosphate/pharmacology*

Paridis Rhizoma， a traditional valuable Chinese herbal medicine， has the functions of clearing heat and removing toxin， relieving edema and pain， cooling liver and calming convulsion， which can be used to treat various diseases such as mumps， abscess， burn， bleeding， and tumor. It has been used in folk medicine for a long time and is the main raw material of various Chinese patent medicines such as Gongxuening Capsules and Yunnan Baiyao. Polyphyllin Ⅰ， an isospirostanol saponin and one of the main active components in Paridis Rhizoma， is distributed in the rhizome， pericarp， and leaves of Paris polyphylla. With high polarity， polyphyllin Ⅰ is mainly extracted by n-butanol extraction and macroporous adsorption resin chromatography， separated by silica gel column chromatography and preparative high performance liquid chromatography， and purified with the combination of methods. With anti-tumor， anti-inflammatory， antibacterial， and anti-virus effects， it is generally employed to treat liver cancer， lung cancer， gastric cancer and other cancers as well as arthritis， influenza， sore toxin， and bacterial infection. However， polyphyllin Ⅰ may cause stomach irritation， hemolysis， liver damage， kidney damage， heart damage， and other adverse reactions. Pharmacokinetic studies show that it has problems such as low bioavailability and poor intestinal absorption and permeability， which affect the clinical application of polyphyllin Ⅰ. This paper summarizes the research on the plant sources， extraction and separation methods， pharmacological effects， adverse reactions， and pharmacokinetics of polyphyllin Ⅰ in recent years， which is expected to provide a reference for the rational clinical application and other in-depth research work of polyphyllin Ⅰ.

BACKGROUND: LY01005 (Goserelin acetate sustained-release microsphere injection) is a modified gonadotropin-releasing hormone (GnRH) agonist injected monthly. This phase III trial study aimed to evaluated the efficacy and safety of LY01005 in Chinese patients with prostate cancer. METHODS: We conducted a randomized controlled, open-label, non-inferiority trial across 49 sites in China. This study included 290 patients with prostate cancer who received either LY01005 or goserelin implants every 28 days for three injections. The primary efficacy endpoints were the percentage of patients with testosterone suppression ≤50 ng/dL at day 29 and the cumulative probability of testosterone ≤50 ng/dL from day 29 to 85. Non-inferiority was prespecified at a margin of -10%. Secondary endpoints included significant castration (≤20 ng/dL), testosterone surge within 72 h following repeated dosing, and changes in luteinizing hormone, follicle-stimulating hormone, and prostate specific antigen levels. RESULTS: On day 29, in the LY01005 and goserelin implant groups, testosterone concentrations fell below medical-castration levels in 99.3% (142/143) and 100% (140/140) of patients, respectively, with a difference of -0.7% (95% confidence interval [CI], -3.9% to 2.0%) between the two groups. The cumulative probabilities of maintaining castration from days 29 to 85 were 99.3% and 97.8%, respectively, with a between-group difference of 1.5% (95% CI, -1.3% to 4.4%). Both results met the criterion for non-inferiority. Secondary endpoints were similar between groups. Both treatments were well-tolerated. LY01005 was associated with fewer injection-site reactions than the goserelin implant (0% vs . 1.4% [2/145]). CONCLUSION: LY01005 is as effective as goserelin implants in reducing testosterone to castration levels, with a similar safety profile. TRIAL REGISTRATION ClinicalTrials.gov, NCT04563936.
Humans ; Male ; Antineoplastic Agents, Hormonal/therapeutic use* ; East Asian People ; Gonadotropin-Releasing Hormone/agonists* ; Goserelin/therapeutic use* ; Prostate-Specific Antigen ; Prostatic Neoplasms/drug therapy* ; Testosterone