Cleft Palate ; surgery ; Humans ; Incidence ; Oral Fistula ; epidemiology ; etiology ; Palate ; surgery ; Postoperative Complications ; epidemiology ; Reconstructive Surgical Procedures ; adverse effects ; Statistics as Topic

Objective:To observe the acoustic characteristics of glottal stops produced by patients with cleft palate.Methods:Twenty boys with cleft palate who were judged to be glottal-stop-producers and 20 normal peers were included. In their own way, all the children were asked to produce following sounds: /iu/ /pai/ /t′u/, /s/ /k′/ /p′u/ /t′u/, /tA/ /ku/ and /i/ /k′u/ /ti/ /suan/. Then the speech spectroanalysis and the comparison were performed by one investigator.Results:The acoustic characteristics of glottal stops changed a lot when they substitute or accompany with different oral stops, which included the emergence of spikes, changes of voice onset time, the formant transitions and spetroanalysis of spikes. Conclusion:The acoustic changes of glottal stops are complicated. Every single aspects of acoustic analysis should be considered in the identification of the acoustic characteristics.

Purpose:To evaluate radiotherapy after operation of esophageal carcinoma. Methods:A comparative study was done between the group of 80 patients treated by postoperative radiotherapy and the group of 80 patients by operation only from January 1989 to June 1994. The radiation dose was 40—50 Gy. Results:The 1 ,3 ,and 5 year survival rates of operative group were 76.3%, 37.5%, 22.5%, and those of postoperative radiotherapy were 77.5 %,56.3 %,32.5 %. There was significant difference between the 3 year survival rates of the two groups ( P

Air ; Animals ; Diving ; Male ; Rats ; Rats, Sprague-Dawley ; Reactive Oxygen Species ; metabolism ; Spleen ; metabolism

AIM:To investigate the effect of RNA interference (RNAi)-mediated insulin-like growth factor 1 receptor ( IGF1R) gene silencing on the growth , migration, and invasion of hepatocellular carcinoma cells .METHODS:The most effective siRNA targeting IGF1R gene was designed and screened .After lentiviral expression vector pLVX-shR-NA2-IGF1R carrying the most effective siRNA sequence was constructed , it was transfected into 293T cells and packed into pLVX-shRNA2-IGF1R lentivirus.Huh7 and Hep3B cells were infected with the pLVX-shRNA2-IGF1R lentivirus to screen the positive clone Huh7 cells and Hep3B cells with the lentivirus .These Huh7 cells and Hep3B cells were cultured to ana-lyze the mRNA level of IGF1R, cell proliferation, cell cycle, cell apoptosis, cell migration/invasion, and the protein levels of IGF1R, Ki-67, p-AKT, p-ERK1, Gli1,β-catenin, cyclin D1, p21 and BCL-XL.RESULTS:The mRNA expression of IGF1R in Huh7 cells and Hep3B cells with pLVX-shRNA2-IGF1R lentivirus was significantly reduced .The proliferation of these cells was remarkably inhibited , and the number in G 1 phase was increased significantly .The percentages of apop-totic cells were increased markedly , and the number of cell migration/invasion was decreased markedly .The protein levels of IGF1R, Ki-67, p-AKT, p-ERK1, Gli1,β-catenin, cyclin D1, p21 and BCL-XL were decreased significantly compared with the blank control group and negative control group .CONCLUSION:The RNAi-mediated IGF1R gene silencing sig-nificantly suppresses the growth and the malignant biological characteristics of Huh 7 cells and Hep3B cells, which may be involved in the reduced protein levels of the above genes induced by down -regulation of IGF1R expression.

This study aimed to summarize the diagnosis and treatment of uncommon complications in esophageal and cardiac cancer operations as well as obtain lessons from the failure. Methods:The etiology, clinical diagnosis, treatment, prevention measures, and factors that contribute to the failure of the uncommon complications were analyzed retrospectively. Results: Results showed ten cured cases and eight death cases (except for the reported eight cases). Conclusion:The following conclusions were ob-tained. 1) The complications described in this paper were rare, but they sometimes occur clinically. If wrong treatment was taken, seri-ous consequences would be expected. 2) Once a jet-like bleeding of aortic esophagus avulsion injury occurs, the surgeon must be calm and take proper treatment to successfully patch up the wounds. 3) The right thoracic approach is a new approach to prevent the injury of azygos vein. 4) Patients with anastomotic stoma fistula easily cause a delay in diagnosis if the leakage was wrapped in the inferior phrenic. 5) Taking preventive measures is the key method for the anastomotic aortoesophageal fistula. 6) Occurrence of pulmonary em-bolism after operation should be monitored. 7) Thoracic gastric mediastinal hernia would cause serious consequences if treatment was not taken at a proper time.

Objective To explore the application value of diffusion-weighted imaging(DWI) in distinction of skull base chordoma from chondrosarcoma.Methods The clinical data and imaging findings of basicranial tumor confirmed by pathology,including 14 patients with classic chordoma,9 with poorly differentiated chordoma and 18 with chondrosarcoma were analyzed retrospectively.The lesion location,enhancement patterns,signal intensity on T2 WI relative to gray matter,and apparent diffusion coefficient (ADC) values were reviewed.The enhancement pattern was scored as 0 (little or non-enhancement),1 (heterogeneous enhancement),or 2 (homogeneous enhancement in ≥90％area).The data were analysed by Kruskal-Wallis test.Results There were significant differences in the mean,minimum and maximum ADC values,the intensity on T2 WI and the enhancement pattern among the three tumor types (P ＜0.05).However,the differences in the score of enhancement pattern and lesion location were not found (P＞0.05).Conclusion DWI may be helpful for the diagnosis of skull base chordoma from chondrosarcoma,and the accuracy rate will be improved when combined with T2WI intensity.

Objective The experimental study on the lift-up speed of a new kind of compliant aerodynamic foil thrust bearings was performed on the multifunctional test rig established for testing the performances of foil gas bearings. Methods The lift-up speed of foil gas thrust bearing under given axial load was analyzed through the spectrum of axial displacement response in frequency domain. Results The test results indicated that the difference in the spectrum of axial displacement responses before and after lifting up of the rotor was obvious. After lifting up of the rotor, there were only larger components of rotation frequency and lower harmanic frequencies. If the rotor wasn't lift-up, there were also larger components of other frequencies in the spectrum. Conclusion So by analyzing the spectrum of axial displacement response, the results showed that the lift-up speed was about 1 860 rpm when the axial load was 31N.

Objective To compare the efficacy of laparoscopic or open surgery for gastrointestinal stromal tumors (GISTs) and investigate effects of different risk level on prognosis.Methods The retrospective cohort study was adopted.The clinical data of 192 patients with GISTs who were admitted to Zhongshan Hospital of Fudan University from January 2008 to December 2013 were collected.Among the 192 patients,88 undergoing laparoscopic surgeries were allocated into the laparoscopic surgery group,104 patients undergoing open surgeries were allocated into the open surgery group.The following indicators were observed:(1) operative status:surgical procedure,operation time,volume of intraoperative blood loss.(2) Status of postoperative recovery:time of gastrointestinal function recovery,time of drainage tube removal,complications and duration of hospital stay.(3) Follow-up status.(4) Prognosis of patients in different risk level.The follow-up using outpatient examination and telephone interview was performed to assess patients' survival,tumor recurrence and metastasis until June 2015.Measurement data with normal distribution were presented as (x) ± s and comparison between groups was evaluated by the t test.Comparison of count data was analyzed by the chi-square test.The Kaplan-Meier method was used to draw survival curve and calculate the overall survival rate and relapse-free survival rate.Results (1) Operative status:of the 88 patients in the laparoscopic surgery group,1 underwent laparoscopic wedge gastrectomy + cholecystectomy + appendectomy,6 underwent laparoscopic wedge gastrectomy + cholecystectomy,14 underwent laparoscopic assisted partial gastrectomy,67 underwent laparoscopic wedge gastrectomy.Of the 104 patients in the open surgery group,1 underwent partial gastrectomy + splenectomy,2 underwent partial gastrectomy combined with distal pancreatectomy + splenectomy,2 underwent total gastrectomy,7 underwent distal subtotal gastrectomy,7 underwent wedge gastrectomy + partial or total adjacent organ resection,8 underwent proximal subtotal gastrectomy,8 underwent wedge gastrectomy + cholecystectomy,69 underwent wedge gastrectomy.The operation time and volume of intraoperative blood loss were (105 ± 33)minutes and (43 ± 16)mL in the laparoscopic surgery group,(121 ± 52)minutes and (199 ± 81) mL in the open group,respectively,with statistically significant differences between the 2 groups (t =-2.104,2.632,P ＜ 0.05).(2) Status of postoperative recovery:the time of gastrointestinal function recovery,time of drainage tube removal and duration of hospital stay were (4.6 ± 1.8) days,(5.8 ± 2.2) days,(7.1 ± 2.9) days in the laparoscopic surgery group and (5.2 ± 1.6) days,(7.1 ± 2.8) days,(8.7 ± 4.3) days in the open surgery group,respectively,with statistically significant differences between the 2 groups (t =-2.783,-3.891,-3.078,P ＜ 0.05).Wound infection,gastric emptying delay,anastomotic leakage,lung infection and bleeding were detected in 1,3,0,0,0 patients in the laparoscopic surgery group and in 0,2,2,2,1 patients in the open surgery group,respectively,with no statistically significant difference between the 2 groups (x2=0.421,P ＞ 0.05).(3) Follow-up status:Of the 192 patients,149 received follow-ups.Of 88 patients in the laparoscopic surgery group,68 were followed up for an average time of 39 months.Of 104 patients in the open surgery group,81 were followed up for an average time of 51 months.During the follow-up,tumor recurrence rate in the laparoscopic surgery group and open surgery group was respectively 8.8％ (6/68) and 21.0％ (17/81),with no statistically significant difference between the 2 groups (x2=1.888,P ＞0.05).Postoperative 1-,3-,5 year survival rates were 98.5％,92.9％,87.4％ and 91.7％,85.2％,76.9％ in the laparoscopic surgery group and open surgery group,respectively,with no statistically significant difference between the 2 groups (x2 =1.967,P ＞ 0.05).(4) Prognosis of patients in different risk level:of the 149 who received the follow-up,the tumor recurrence rate of patients in low,intermediate and high recurrence risk was 7.0％ (5/71),13.6％ (6/44) and 35.3％ (12/34),respectively,with a statistically significant difference among the above indexes (x2 =14.637,P ＜ 0.05),showing statistically significant differences between low risk and high risk patients and between intermediate risk and high risk patients (x2=13.263,6.279,P ＜ 0.05),while no statistically significant difference between low risk and intermediate risk patients (x2 =0.894,P ＞ 0.05).Five-year relapse-free survival rate of low,intermediate and high risk patients was 94.2％,80.0％ and 61.8％ respectively,with a statistically significant difference (x2=13.547,P ＜ 0.05),showing statistically significant differences between low risk and high risk patients,intermediate risk and high risk patients (x2 =4.357,12.336,P ＜ 0.05),while no statistically significant difference between low risk and intermediate risk patients (x2 =0.696,P ＞ 0.05).Conclusions Compared to open resection,laparoscopic GISTs resection offers better short-term outcomes,however,the two surgical techniques offer equal long-term outcomes.Patients of high risk have poor prognosis.