Objective To analyze the impact of uterine septum on pregnancy and influencing factors on postopera-tive pregnancy. Methods 125 patients with septate uterus and bearing requirement who underwent TCRS were fol-lowed up to assess fertility outcome. The clinical data was retrospectively analyzed. Results Spontaneous abortion rate was 70.40%and 19.39%, live birth rates was 10.40%and 72.45 %in preoperation and postoperation respec-tively. The difference was statistically significant ( < 0.05). Spontaneous abortion rate in older than 35 years old group was significantly higher than that in younger than 35 years old group, but live birth rate was lower. There was no significant difference in different times of operation in uterine cavity, number of abortion and septum length and so on. Conclusions TCRS can significantly improve pregnancy outcome. The age has influence on postoperative pregnancy outcome. Abortion numbers, septum length, septal base width, intrauterine device (IUD) and hormone re-placement therapy (HRT) may have no effects.

Objective: To investigate the effect of silencing rapamycin insensitive companion of mammalian target of rapamycin (RICTOR) gene expression on the sensitivity of esophageal squamous cell carcinoma cells to everolimus, and to explore its possible molecular mechanism. Methods: The expression level of RICTOR protein in esophageal squamous cell carcinoma TE1, ECa109, EC9706, KYSE450 and KYSE790 cells were detected by Western blotting. RICTOR-shRNA or the Control-shRNA was transfected into ECa109 cells by LipofectAMINE, and the ECa109 cells stably expressing RICTOR-shRNA or the Control-shRNA were screened and named as ECa 109-RICTOR-shRNA or ECa109-control-shRNA cells. The effect of everolimus on the proliferation of ECa109-RICTOR-shRNA cells was detected by CCK-8 assay. The expression levels of phosphatidylinositol 3-kinase (PI3K)/protein kinase B (PKB, Akt)/mammalian target of rapamycin (mTOR) signal pathwayrelated RICTOR, Akt, phospho-Akt (p-Akt) (Ser473), ribosome protein subunit 6 kinase of 70 kDa (p70S6K), phospho-p70S6K (p-p70S6K), proline-rich Akt substrate of 40 kDa (PRAS40) and phospho-PRAS40 (p-PRAS40) (Thr246) proteins in everolimus-treated ECa109-control-shRNA and ECa109-RICTOR-shRNA cells were detected by Western blotting. The nude mouse xenograft tumor models of ECa1 09-RICTOR-shRNA and ECa109-control-shRNA cells were established and treated with everolimus, then the effect of everolimus on tumor growth in nude mice was evaluated. Results: RICTOR protein was expressed in five esophageal squamous cell carcinoma cell lines, especially in ECa1 09 cells. Compared with the Control-shRNA, RICTOR-shRNA inhibited the proliferation of ECa1 09 cells. Everolimus inhibited the proliferation of ECa1 09-RICTOR-shRNA and ECa109-control-shRNA cells, especially to the former; the values of half maximal inhibitory concentration (IC50) were (17.68± 1.25) μmol/L and (36.84±1.57) μmol/L, respectively. The RICTOR-shRNA decreased the expression levels of p-Akt (Ser473) and p-PRAS40 (Thr246) (both P < 0.001) in ECa109 cells, while everolimus increased the expressions of p-Akt (Ser473) and p-PRAS40 (Thr246) (both P < 0.001), although the expression of p-p70S6K was decreased after everolimus treatment (P < 0.001). In RICTOR-shRNA+everolimus group, the expressions of p-Akt (Ser473) and p-PRAS40 (Thr246) were down-regulated (both P < 0.001), while the expression of p-p70S6K had no obvious change (P > 0.05), which indicated that RICTOR-shRNA inhibited the phosphorylated activation of Akt and PRAS40 induced by everolimus. Both RICTOR-shRNA and everolimus inhibited the growth of ECa109 cell xenografts in nude mice (all P < 0.05), while the inhibitory effect was strongest in RICTOR-shRNA+everolimus group (P < 0.001). Conclusion: Silencing RICTOR gene can improve the sensitivity of esophageal squamous cell carcinoma cells to everolimus, and the molecular mechanism may be associated with the down-regulation of RICTOR expression to inhibit the phosphorylated activation of Akt and PRAS40 induced by everolimus.

Unified examination refers to the examination given by the university for medical students to graduate after they pass six curriculum examinations,including diagnostics,introduce of surgery,internal medicine,surgery,obstetrics and gynecology and pedology during the clinical study phases.It is a necessary process for cultivation of the professionals of the clinic medicine and has practice significance.Through the organization and management of the unified examination process,as well as analysis of examination result and feedback,education quality has been enhanced and educational reform promoted.

OBJECTIVETo explore the differences in sensitivity to rapamycin of five esophageal squamous cell carcinoma cell lines with different differentiation and the changes of sensitivity of the cells after siRNA-interfered expression of p70S6K.

METHODSEffects of rapamycin on proliferation of ESCC cell lines with different differentiation, EC9706, TE-1, Eca109, KYSE790 and KYSE450 cells, were investigated using cell counting kit 8 (CCK-8) assay, and according to the above results, the EC9706 cells non-sensitive to rapamycin were chosen to be transfected with p70S6K-siRNA. The changes in sensitivity of cells to rapamycin were measured in vitro and in vivo using CCK-8 kit, flow cytometry and tumor formation in nude mice.

RESULTSCCK-8 results showed that all the five cell line cells were sensitive to low concentration of rapamycin (<100 nmol/L), but TE-1 and EC9706 cells, which were with poor differentiation, showed resistance to high concentration of rapamycin. After EC9706 cells were treated with 50, 100, 200, 500 and 1 000 nmol/L rapamycin and p70S6K-siRNA, the proliferation rates of EC9706 cells were (48.67 ± 1.68)%, (15.45 ± 1.54)%, (14.00 ± 0.91)%, (10.97 ± 0.72)% and (2.70 ± 0.32)%, respectively, and were significantly lower than that of cells treated with 50, 100, 200, 500 and 1 000 nmol/L rapamycin and control siRNA [(74.53 ± 1.71)%, (68.27 ± 1.35)%, (71.74 ± 2.44)%, (76.23 ± 1.02)% and (80.21 ± 2.77)%] (P<0.05 for all). The results of flow cytometry showed that the ratios of cells in G1 phase of the p70S6K-siRNA, rapamycin and p70S6K-siRNA+ rapamycin groups were (53.82 ± 1.78)%, (57.87 ± 4.01)% and (73.73 ± 3.68)%, respectively, significantly higher than that in the control group (46.09 ± 2.31)% (P<0.05 for all). The results of tumor formation test in vivo showed that the inhibitory effect of rapamycin on tumor growth was stronger after the cells were transfected with p70S6K-siRNA, and the inhibition rate was 96.5%.

CONCLUSIONESCC cells with different differentiation have different sensitivity to rapamycin, and p70S6K-siRNA can improve the sensitivity of cells to rapamycin in vitro and in vivo.

Animals ; Antibiotics, Antineoplastic ; pharmacology ; Carcinoma, Squamous Cell ; drug therapy ; metabolism ; pathology ; Cell Differentiation ; Cell Line, Tumor ; Cell Proliferation ; Esophageal Neoplasms ; drug therapy ; metabolism ; pathology ; Humans ; Mice ; Mice, Nude ; RNA, Small Interfering ; Ribosomal Protein S6 Kinases, 70-kDa ; genetics ; metabolism ; Signal Transduction ; Sirolimus ; pharmacology ; Transfection

Objective To investigate the factors related to the local recurrence of spine giant cell tumor (GCT) after surgical treatment and provide a reference for the treatment.Methods A retrospective analysis of GCT of the spine from January 2000 to June 2016 was conducted.A total of 73 patients with GCT of the spine who underwent surgical treatment in Giant Cell Tumor Team of China (GTOC) were collected,including 29 males and 44 females.The average age was 33.73±11.34 years (range:13-60 years).Clinical characteristics including gender,age,history of recurrence,tumor position,Ennecking stage,Frankel score,clinical symptoms,surgery procedures,surgical approach,preoperative selective artery embolism (PAE),radiotherapy and bisphosphonate treatment history are collected.The correlation between the factors and tumor recurrence were analyzed by single factor analysis and multiple-factor logistic regression.Results The mean follow-up time was 61.81 ±53.21 months (range:4-210 months).Surgical procedures,bisphosphonate treatment,history of recurrence and radiotherapy were found significant correlation with tumor recurrence by single factor analysis.The result of multiple-factor logistic regression showed that surgical procedures (P=0.026) and bisphosphonate treatment (P=0.017) were independent risk factors for tumor recurrence.Conclusion Total spondylectomy and bisphosphonate treatment could significantly reduce the recurrence rate of GCT of the spine.

OBJECTIVE: To study the relationship between the first formant (F1) and jaw, the second formant (F2) and tongue and the third formant (F3) and lip. Fine articulation of jaw, lips, tongue by measured formant of different single-vowel, in order to explore clinical implications of F1, F2 and F3. METHOD: Measure 30 hearing normal men's F1, F2, F3 of /a/, /i/, /e/, /u/ and /ü/. The study compared F1 of /a/, /i/, /e/ to find the relation ship between F1 and jaw movement by one-way anova, compared F2 of /a/, /i/, /e/, /u/ to find the relationship between F2 and four tongue movements, and compared F2 and F3 of /i/, /ü/ to find the relationship between F2, F3 and lip movement by paired-samples t test. RESULT: There was significant difference among F1 of /a/, /i/, /e/. F2 and F3 of /i/, /ü/ were also significantly different (P<0.01); F2 of /a/, /i/, /u/ that expresses tongue articulation movement exists significant difference (P<0.01), but both F2(a) and F2(e) did not differ significantly by multiple compare means. There were extremely significant differences (P<0.01) among other three positions of tongue. CONCLUSION F1 can reflect different positions of jaw. F2 and F3 can reflect the position of lip and tongue. F2 can reflect different locations of tongue.
Adolescent ; Adult ; Humans ; Male ; Sound Spectrography ; Speech Acoustics ; Speech Production Measurement ; Vocal Cords ; physiology ; Young Adult

Objective:To investigate the expression changes at the transcriptional level in normal lung tissues of mice after exposure to heavy ion radiation for different durations at different doses, aiming to provide evidence for exploring sensitive genes of heavy ion radiation, heavy ion radiation effect and the damage mechanism.Methods:Experiments on the temporal kinetics: the whole thorax of mice was irradiated with 14.5Gy carbon-ions and the total RNA of lung tissue was extracted at 3days, 7days, 3 weeks and 24 weeks. In dose-dependent experiment, the total RNA of lung tissue was extracted at 1 week after irradiated with a growing thoracic dose of 0, 7.5, 10.5, 12.5, 14.5, 17.5 and 20Gy. Protein-to-protein interaction (PPI) analysis and gene-ontology biological process enrichment analysis were performed on significant differentially expressed genes (DEGs).Results:A clearly differential expression patterns were observed at 3-day (acute stage), 1-week (subacute stage), 3-week (inflammatory stage) and 24-week (fibrosis stage) following 14.5Gy carbon-ions irradiation. Among those, the 3-day time point was found to be the mostly different from the other time points, whereas the 7-day time point had the highest uniformity with the other time points. Cellular apoptosis was the main type of cell death in normal lung tissues following carbon-ions exposure. The interactive genes of Phlda3, GDF15, Mgmt and Bax were identified as the radiosensitive genes, and Phlda3 was the center ( R=0.76, P<0.001). Conclusion:The findings in this study provide transcriptional insights into the biological mechanism underlying normal lung tissue toxicity induced by carbon-ions.

Objective:To investigate the characteristics of bacterial community in upper gastrointestinal tumors.Methods:The study population was patients with upper gastrointestinal tumors (esophageal cancer and gastric cancer). Gastroscopy was performed on the enrolled patients ( n=17), and the specimens were taken from the tumor sites. At the same time, non-tumor tissues more than 4 cm away from the tumor tissues were taken as the control. After total DNA was extracted and purified, high-throughput 16S DNA gene sequencing was used to detect the microbiota in tumor tissues and control tissues. Bioinformatics analysis was carried out and the differences between groups were compared. Results:16S DNA PCR showed that there was no significant difference in bacterial load between tumor tissues and control tissues. The α-diversity and β-diversity indexes showed that the community composition of the two groups was similar; the samples were discrete and the colony composition was different, but there was no significant difference between the two groups. The results of Venn diagram showed that there were more operational taxonomic units (OTUs) in non-tumor tissues than in tumor tissues (2 068 vs 1 358), indicating that the bacterial species in normal tissues were more abundant than those in tumor tissues. Compared with the control tissues, the percentages of Prevotellaceae ( Prevotella), Lactobacaceae ( Lactobacillus) and Fusobacteriaceae ( Fusobacterium) in tumor tissues were relatively higher (the average percentage was more than twice that of the control). Further paired comparison of the top ten bacteria in the family and genus abundance of the two groups of samples showed that Pseudomonas decreased significantly in tumor tissues at the family ( P=0.041) and genus ( P=0.041) levels, while Prevotella was significantly enriched in tumor tissues at the family ( P=0.031) and genus ( P=0.007) levels. Conclusions:The bacterial community in the tumor microenvironment of the upper gastrointestinal tumor changed, and the species enriched in the tumor site were mainly oral common anaerobic bacteria, such as Prevotellaceae ( Prevotella), Lactobacaceae ( Lactobacillus) and Fusobacteriaceae ( Fusobacterium), especially Prevotellaceae ( Prevotella).

Objective: To investigate the clinicopathological features and molecular phenotypes of gastric cancer with enteroblastic dif-ferentiation (GCED). Methods: A retrospective analysis of 337 patients with gastric adenocarcinoma diagnosed by the pathology de-partment of the First Affiliated Hospital of Zhejiang University in March 2013-2017 was conducted. Of them, 8 patients were diag-nosed with gastric carcinoma with intestinal blastocyte differentiation. All the patients were elderly, including 6 men and 2 women. The onset age was 68-83 years (mean 76.6 years). Two cases had serum AFP≥200 μg/L before treatment. According to the histopatho-logical morphology, the immunophenotype was analyzed by immunohistochemistry, the SALL4 gene was detected using reverse tran-scription-polymerase chain reaction (RT-PCR), and the relevant literature was reviewed. Results: Microscopically, all cases had primi-tive enteroid structures, consisting of cubic or columnar cells with clear cytoplasm, and immunohistochemical staining showed positivi-ty for either AFP and GPC3 or SALL4. The expression of SALL4 mRNA was significantly increased by RT-PCR. Follow-up from 1 to 5 years showed that 5 patients had liver and other organ metastases, 2 patients died, and 1 patient survived without a tumor. Conclusions:GCED is a rare invasive gastric adenocarcinoma with a worse prognosis than that of normal intestinal adenocarcinoma. The treatment of general intestinal adenocarcinoma has little effect. There are some characteristic changes in histology. It would be helpful for diag-nosis and differential diagnosis if clinicians are familiar with the tumor spectrum and genetic characteristics. Target therapy for an origi-nal marker, such as SALL4, has a bright future.