Adenocarcinoma ; genetics ; metabolism ; Angiomyolipoma ; etiology ; Antibiotics, Antineoplastic ; therapeutic use ; Astrocytoma ; etiology ; Brain Neoplasms ; etiology ; Breast Neoplasms ; genetics ; metabolism ; Gene Expression Regulation, Neoplastic ; Genes, Tumor Suppressor ; Humans ; Kidney Neoplasms ; etiology ; Lung Neoplasms ; genetics ; metabolism ; Mutation ; Sirolimus ; therapeutic use ; TOR Serine-Threonine Kinases ; antagonists & inhibitors ; metabolism ; Tuberous Sclerosis ; complications ; drug therapy ; genetics ; metabolism ; Tumor Suppressor Proteins ; genetics ; metabolism

Objective To evaluate the regulatory effect of OX40 co-stimulatory signal on the expression of Foxp3 in inductive regulatory T cells (iTreg) in vitro.Method CD4+ CD25+ naive T cells were isolated from C57BL/6 mouse lymphocyte suspension by MASC CD4+ CD25+ regulatory T cell isolation kit.Inductive Tregs were generated by stimulation of naive T cells in the presence of transforming growth factor beta (TGFβ1),anti-CD3,anti-CD28 and IL-2.The regulatory effect on iTregs was shown by use of OX40 stimulation monoclonal antibody (OX86) or control antibody.Using flow cytometric analysis (FACS),we examined the antibody-based identification of Tregs surface markers CD4 and CD25,along with the intracellular activation marker FoxP3.Results The ratio of CD4+ CD25+ nTregs isolated from mouse lymphatic node was (5.0 ± 0.4)％ vs.(71.8 ± 13.4)％ of TGFβ1-driven iTregs.The ratio of CD4+ CD25+ Tregs was (80.0 ± 1.6) ％ in OX40 stimulation McAb group vs.(86.0 ± 1.4)％ in control antibody group.Furthermore,the expression of Foxp3 was (59.2 ± 0.7) ％ in OX40 stimulation McAb group vs.(70.0 ± 0.8) ％ in control antibody group (P＜0.05).Conclusion TGFβ1-dependent protocol may induce the conversion of naive CD4+ T cells into CD25+ Foxp3+ iTregs.OX40 stimulation can down-regulate the expression of Foxp3 in CD4+ CD25 + iTreg significantly.Thus OX40 molecular may become an attractive target in Tregs-induced transplant tolerance.Further study should be performed to increase the suppressive activity of iTregs through blockade of OX40 signal.

Objective To calibrate and assess the dose distribution of 125 I seed brachytherapy. Methods Twenty 125 I seeds, each with activity of 12.2 MBq, were implanted on the circumference of a circle 15mm across in a phantom. Into a designed prostate model, 70 125 I seeds were implanted in four planes. The absorbed dose rate of the target volume was monitored by Farmar 2570 dosimeter and thermoluminescence dosimeters (TLD) with the isodose curves drawn on Kodak films. Results The central dose rates of the circular target volume assessed by Farmar 2570 and TLD were 8.4, 7.9 cGy/h in the phantom and 12.0, 11.1 cGy/h in the prostate model. For the target volume of the prostate model, the total absorbed dose was 24?219 cGy. The dose rate 4 cm from the prostate cancer as shown by the isodose curves was only 10% of the central dose rate. Conclusion The central dose rate of target volume measured by the two methods are similar.

[Objective] To investigate the clinical significance of approximated molecular subtype.[Methods] Four different subtypes were defined by immunohistochemical (IHC) markers as estrogen receptor (ER),progesterone receptor (PR) and HER2.Clinical characteristics as distribution,age,menopausal status,histopathologic type and grading,tumor size,lymph node status,time to and place of first tumor recurrence were analyzed.[Results] Among all 703 cases,Luminal A was the majority (51.5%) and the least were Luminal B and HER2+.90.8% the patients were less than 59 years old with Luminal A.Different subtype has different histopathologic grading.Luminal A was more than others among grading 1 tumors and it has more T1 tumors,while T4 tumors was most among HER2+ ones.Lymph nodes metastasis has no significant difference between different groups,other than high proportion tendency of N3 stage in Luminal B and HER2+.In addition,Luminal A has the longest time to the first recurrence while HER2+ was the shortest.Moreover,HER2+ and Basal-like have high rates of lung metastasis.Different from foreign reports,the distribution of the first recurrent place and distant metastases have no significant difference.[Conclusion] The classification of breast cancer approximated molecular subtype defined by IHC markers was feasible.The distribution is similar to other countries.Luminal A has rather better clinical characteristics while HER2+ and Basal-like have high rates of lung metastasis.However,Luminal A has the highest proportion of young patients,which is different from other countries.

Objective To study the dose rate distribution on cultured cell plane and establish a reference dose rate table of in vitro cell line ~(125)I seed irradiator.Methods Thermoluminescence dosimetry(TLD) was used to measure the irradiation dose rate of a single 6711 model(~(125) I) seed with apparent activity of 10.323 MBq in water at point P.Meanwhile,the theoretic value of the irradiation dose rate at point P was calculated with theoretic formula.The difference between the calculated and observed values within 10% was set as standard to analyze the accuracy of the measurement.The irradiation dose rate of a single 6711 model(~(125) I) seed was measured in 1mm-thick polystyrene + water medium at point P.The value was applied to differential or non-differential proof along with the value from water medium to study the effect of 1 mm thick polystyrene on distribution of irradiation dose in water.Finally,by simulating the(~(125) I) seed plane irradiator with nine(~(125) I) seeds,the distribution table of irradiation dose rate on the cultured cell plane was calculated with theoretical formula.Results The observed value(n= 10) of irradiation dose rate with one(~(125) I) seed in water at point P was(0.359?0.023)cGy/h and the calculated value was 0.347cGy/h,the difference was within 10%.The observed value(n=10) of irradiation dose of one(~(125) I) seed in 1mm-thick polystyrene + water medium at point P was (0.350?0.027)cGy/h,which showed no statistical difference from the observed value in water under differential and non-differential proof.The reference table on dose rate distribution for cells exposed to(~(125) I) seed irradiation in vitro was developed.Conclusions 1mm-thick polystyrene gives no significant effect on irradiation dose rate distribution from(~(125) I) seeds in water.A reference table on the dose rate distribution for cells exposed to(~(125) I) seed irradiation in vitro has been developed,which can be used to determine an optimal irradiating strategy for future work.

Objective To observe the clinical efficacy of acupuncture by stages in treating post-stroke swallowing dysfunction. Method Sixty eligible patients were randomized into a staging-acupuncture group and an ordinary-acupuncture group, to respectively receive acupuncture by the stage of swallowing and ordinary acupuncture in addition to the basic treatments. Function estimation was conducted before and after intervention in both groups to compare the therapeutic efficacies.Result According to the water drinking test, the total effective rate was 83.3% in the staging-acupuncture group versus 53.3% in the ordinary-acupuncture group, and the difference was statistically significant by rank sum test (P＜0.05), and the staging-acupuncture group was superior to the ordinary-acupuncture group especially in the pharyngeal stage (P＜0.05); the differences were statistically insignificant in the oral stage and esophageal stage (P>0.05); regarding the video fluoroscopic swallowing study (VFSS), the staging-acupuncture group was significantly better than ordinary-acupuncture group in improving swallowing function (P＜0.05).Conclusion Acupuncture by swallowing stages is effective in treating post-stroke swallowing dysfunction, especially in improving the swallowing function in pharyngeal stage.

Objective To analyze the ecological environmental differences of hibernation hole and temporary hole of Himalayan marmot based on global positioning system (GPS),remote sensing (RS) and geographical information system (GIS) in Yushu City,Qinghai Province.Methods Hibernation holes and temporary holes were located based on GPS.Ecological environment factors related with Himalayan marmot,such as land surface temperature (LST),digital elevation model (DEM),normalized different vegetation index (NDVI),were extracted based on RS and GIS.The ecological environment differences between hibernation hole and temporary hole were explored based on epidemiological statistical method.Results Monthly LST (degree Kelvin,K) of hibernation hole was slightly higher than that of temporary hole in the same period.Yearly day LST of hibernation hole was 1.1 K higher than that of temporary hole in the same period.Yearly night LST of hibernation hole was 0.3 K higher than that of temporary hole in the same period.Monthly NDVI of temporary hole was slightly higher than that of hibernation hole in the same period.Yearly NDVI of temporary hole was 0.001 higher than that of hibernation hole in the same period.DEM of temporary hole was about 40 m higher than that of hibernation hole.The top two ratios of soil type factors were both alpine meadow soil and dark felty soil for hibernation hole and temporary hole,which were 62.1％ and 29.3％,64.4％ and 25.6％.The top two ratios of land cover factors were both rainfed cropland and mosaic cropland for hibernation hole and temporary hole,which were 43.3％ and 25.8％,40.0％ and 26.2％.Conclusions Soil type factors and land cover factors for hibernation hole and temporary hole are similar.Lower DEM and higher LST are chose for hibernation hole,and better NDVI is chose for temporary hole,which is good for food intake.

Objective To apply the Chinese version of Care Transition Measure (C-CTM) in patients with chronic diseases to assess the quality of transitional care and its influencing elements in order to provide reference for improving the quality of transitional care. Methods A total of 210 patients with chronic diseases were telephoned 2 to 4 weeks after discharge using C- CTM. Results The C- CTM score of the 210 study participants was 52.37±15.45. The general self- care preparation scored the highest which was 65.48±15.07, written plan was the lowest with a median score of 16.67. Multiple regression analysis showed that education level, hospital class and Activity of Daily Living (ADL) scores upon admission were significantly positively associated with the C- CTM scores. Conclusions The overall quality of transitional care was poor, especially in written plan. Quality of transitional care was poorer in patients with lower education level, being admitted to lower class hospitals and with lower ADL scores upon admission.

Object To study the chemical constituents with the antiviral effect from Yinqiaosan on influenza virus Methods Isolation of the constituents by different kinds of column chromatography and elucidation of their structures on the basis of chemical and spectral methods Results Four flavonoid glycosides were isolated and elucidated as 2′ O D apiofuranosyl (1→2) ? D glucopyranosyl] isoliquiritigenin, 4′ isoliquiritigenin, 4′ O D apiofuranosyl (1→2) ? D glucopyranosyl] isoliquiritigenin, 4 isoliquiritigenin, 4 O D apiofuranosyl (1→2) ? D glucopyranosyl] isoliquiritigenin and 4′ isoliquiritigenin and 4′ O D apiofuranosyl (1→2) ? D glucopyranosyl] liquiritigenin, respectively liquiritigenin, respectively Conclusion 2′ O D apiofuranosyl (1→2) ? D glucopyranosyl] isoliquiritigenin is a new naturally compound isoliquiritigenin is a new naturally compound

AIM: To investigate the effects of Hua Yu Dao Zhi decoction (HYDZD) on renal interstitial fibrosis induced by gentamicin in rats. METHODS: 32 healthy male Wistar rats were randomly divided into 3 groups: control group (n=6), gentamicin group (n=13) and HYDZD+gentamicin group (n=13). The renal tubulointerstitial fibrosis in rats was induced by gentamicin for 9 d. All rats were sacrificed on 30 d after modeling and renal tissues were stained with HE. The renal indexes were calculated and the changes of serum creatinine, blood urea nitrogen, total urinary protein in 24 h, and the level of α-SMA, Smad2, Smad7 were detected. RESULTS: Compared to control group, it was observed that there was mainly necrosis and partly degeneration in the renal tubular epithelial cells, proliferation of fibroblasts and infiltration of the inflammatory cells in the interstitial substance in gentamicin group under the light microscope. The renal indexes, serum creatinine, blood urea nitrogen, total urinary protein in 24 h, and the level of α-SMA, Smad2 were significantly higher than those in control group (P<0.01) and the level of Smad7 was significantly lower than that in control group (P<0.01). Under the light microscope, the results of all mentioned above in HYDZD+gentamicin group were improved significantly (P<0.01), the level of α-SMA, Smad2 were significantly lower than those in gentamicin group (P<0.01). However, no significant difference of Smad7 protein expression between gentamicin group and HYDZD+gentamicin group was observed (P>0.05). CONCLUSION: HYDZD is very effective in preventing and treating renal interstitial fibrosis caused by gentamicin with the decreased level of Smad2.