Objective To analyze the clinical features and onset factors of esophageal cancer.Methods The SPSS 13.0 software was adopted to establish the computer records management system of esophageal cancer.The clinical data in 2 261 clinically cured discharged cases of esophageal cancer from January 2011 to December 2013 were statistically analyzed.Results Forty-nine cases (2.17％) were in the 30-＜40 years old group,324 cases (14.33％) were in the 40-＜50 years old group,963 cases (42.59％) were in the 50-＜60 age group,790 cases (34.94％) were in the 60-＜70 age group and 135 cases (5.97％) were in the 70 years old or more group.Among 2 240 cases,2 031 cases (90.36 ％) showed the different differentiation degrees of squamous epithelial carcinoma by histological analysis,the invaded range displayed fibrous membrane(T3) in 759 cases(33.57％) and peripheral tissue(T4) in 682 cases(30.16％);having smoking and drinking history was in 1 281 cases(56.67％) and 1 025 cases (45.33 ％) respectively;596 cases (26.36 ％) had genetic family history,75.08 ％ was father positive or mother positive.Conclusion Esophageal cancer is mainly squamous cell carcinoma,the onset age is mainly concentrated at the age 50-＜70 years old,which is correlated with smoking and drinking years,moreover has obvious genetic susceptibility.

Objective To collect the hot spots, development trends, high yield authors and their affiliated institutions by analyzing the papers on pancreatic cancer chemotherapy in recent 5 years. Methods The papers on pancreatic cancer chemotherapy were downloaded from PubMed. Their high frequency subject headings extracted by BICOMB were analyzed by bibliometric double clustering analysis and strategic coordinate analysis. The high yield authors were analyzed by co-authorship group analysis. Results The current studies on pancreatic cancer chemotherapy in foreign countries were focused on the pathological features of pancreatic duct adenocarcinoma before and after chemotherapy, drug therapy of pancreatic cancer according to its genetics, metabolism and pharmacology of antitumor drugs, surgical treatment combined with radiotherapy and chemotherapy for pancreatic cancer. The high yield authors could be divided into two large groups from Japan and USA and a number of small groups. Conclusion New breakthrough points should be found from the matured topics, the topics with a further developmental space should be greatly concerned, and cooperation should be strengthened between study groups or teams.

Objective To evaluate the relationship between the clinicopathological factors, prognosis and the expression of p16 and c erbB 2 protein in primary breast cancer. Methods The expression of p16 and c erbB 2 by immunohistochemical method was observed in 50 patients with primary breast cancer and the detection of p16 by polymerase chain reaction(PCR) and the point mutation of p16 by PCR single strand conformational polymorphism(SSCP) were detected in 20 patients with breast cancer. Results Among the cancers, positive expression of p16 protein was found in 17(34.00%) cases, c erbB 2 protein positive expression in 24(48.00%) cases. No homozygous deletion in p16 gene was found. However, exon2 point mutation of p16 gene was found in 1 of 20 breast cancer. The results showed no relationship between p16 expression and clinicopathological factor or prognosis. Positive expressions of c erbB 2 protein were often found in breast cancer with lymph node metastasis(P=0.0237) with a poor 5 year survivalrate(P=0.0169). There was no consistent relationship between the expression of p16 and c erbB 2 protein. Neither p16 nor c erbB 2 protein expression could be as an independent prognostic factor. Conclusions The patients with breast cancer of positive expression of c erbB 2 protein has a high lymph node metastasis rate and a poor survival rate. The point mutation rate of p16 gene is lower in primary breast cancer, and it can be a molecular events in advanced primary breast cancer.

In order to established a method for simultaneous determination of isoquercitrin, astragaline, quercetin and kaempferol in Lysimachia clethroides, the ionic liquid 1-hexyl-3-methylimidazolium hexafluorophosphate ([HMIM]PF6) methanol was used as the ultrasound-assisted extraction solvent combing with RP-HPLC. A Purospher star RP-C1 column was used with the mobile phase of aceto- nitrile, methanol and 0. 4% phosphate acid by gradient elution at the detection wavelength of 360 nm. The flow rate was 0.7 mL x min(-1), and the column temperature was the room temperature. Under the optimized conditions, the linear ranges were 2.54 x 10(-2)-2. 54, 2.50 x 10(-2)- 2.50, 1.54 x 10(-3)-0.154, 1.49 x 10(-3)-0.149 microg for isoquercitrin, astragaline, quercetin and kaempferol, respectively. The average recoveries of the four constituents were 101.1%, 98.90%, 101.0%, 101.6%, respectively. The method was green, simple, rapid and accurate, and provided a valid method for analysis of isoquercitrin, astragaline, quercetin and kaempferol in L. clethroides.
Chemical Fractionation ; instrumentation ; methods ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; analysis ; isolation & purification ; Flavonoids ; analysis ; isolation & purification ; Ionic Liquids ; chemistry ; Primulaceae ; chemistry

Objective To investigate the energy intake and complications of continuous and intermittent pump feeding in acute stroke patients and provide a theoretical evidence to support for clinical treatment.Methods From April 2012 to June 2016,69 acute srtoke patients on the nasogastric tube feeding and admitted in the Department of Neurology intensive care unit in Xijing Hospital were enrolled and randomly assigned to have continuous or intermittent pump feeding.The primary endpoint was the efficacy in supplying the desired amount of nutrients by the fifth day and complications(hospital-acquired pneumonia,diarrhea,gastric retention,gastrointestinal bleeding)during the first week.The secondary endpoint was nutritional assessments(albumin,prealbumin,transferrin,hypersensitive c-reactive protein)in the first week.Results Both groups were comparable in acute physiology and chronic health evaluation Ⅱ(13.3±4.7 vs.12.9±4.5),Glasgow coma scale[10(7.2,14)vs.9.5(7.7,12)],National Institute of Health stroke scale[17(15,19)vs.16(13,20)],and Barthel scores[5(0,12.5)vs.10(5,15)](all P>0.05).It was no significantly different in the achievement percentage of the energy determined in the fifth day [93.9％(77.9％,99.8％)in continuous group and 84.8％(75.7％,93.9％)in intermittent group(U=0.144,P>0.05).Intermittent pump feeding significantly reduced the rate of hospital-acquired pneumonia in the first week when compared with continuous pump feeding(58.3％vs.33.3％,X2=4.327,P=0.038),and both groups displayed a moderate number of digestive complications without significant differences,including diarrhea(30.6％vs.27.3％,X2=0.09,P=0.764),gastric retention(2.78％vs.3.03％,X2=0.001,P=1.000),and gastrointestinal bleeding(5.56％vs.9.10％,X2=0.010,P=0.920).No difference could be demonstrated in serum protein markers between two groups in the first week,including prealbumin[0.17(0.13,0.20)g/L vs.0.18(0.15,0.24)g/L,P=0.195),transferrin[1.90(1.52,2.20)g/L vs.1.94(1.65,2.06)g/L,P=0.747),and hypersensitive C-reactive protein[22.5(8.3,50.1)mg/L vs.14.6(6.5,30.5)mg/L,P=0.205].Conclusions Both continuous and intermittent pump feeding can reach the target predictive nutrition(100％of calculated caloric requirements)without statistical differences in the incidences of gastrointestinal complications,and the rate of HAP is lower in intermittent group.Intermittent enteral nutrition can be used as an appropriate method of enteral nutrition support to improve the nutritional status in critically acute stroke patients.

Objective To explore the relationship between gastric juice pH and hospital-acquired pneumonia ( HAP) , the gastric bacterial colonization and etiology of HAP in neurologic intensive care unit patients by monitoring gastric juice pH value.Methods From October 2014 to May 2015, consecutive seventy-two tube feeding patients admitted in the Department of Neurology Intensive Care Unit in Xijing Hospital were enrolled in this research.The type and concentration of pathogens from gastric contents were collected, while samples from upper respiratory tract and pharynx were detected dynamically at the same time.Results (1)The group with new onset HAP was higher in gastric juice pH (6.4(5.4,6.4) vs 5.4 (2.5, 6.4), Z=-2.37, P=0.01); (2) The isolation rate of colonized bacteria in gastric cavity was associated with the pH of gastric juice , achieving 60.8% ( 42/69 ) in HAP group; ( 3 ) When the gastric juice pH was >4, the isolation rate of Gram-negative bacilli in gastric cavity obviously increased (63.6%(28/44) vs 35.7%(10/28),χ2 =5.323, P=0.021); (4)The same pathogens were found in stomach-pharynx-upper respiratory tract in 7 cases ( 17.5%) of the total 40 HAP patients.Conclusion Increased gastric juice pH was associated with gastric colonization , especially Gram-negative bacilli , and may lead to a higher incidence of new onset HAP in patients on enteral feeding.

Objective To explore the characteristics of calf muscle movement of the normal volunteer in vivo by velocity encoded phase contrast MRI (VE-PC MRI ).MethodsTwenty four healthy subjects were divided into the young group (30-40 years) and the elderly group (60—78 years).All subjects were positioned on the scanner table and did ankles flexion-extension voluntary movement,the moving images of tibialis anterior muscles (TA),medial gastrocnemius (MG) and soleus muscle (SOL)on the left were scanned with VE-PC MRI.The calf muscles contraction velocity were analyzed by software.The Mann-Whitney U test was used for comparison of calf muscles contraction velocity in vivo between the young group and the elderly group. Results During cyclic ankle flexion-extension,dorsiflexion phase (1—10 phases)in the two groups,TA showed concentric contraction,plantar flexion phase (11—20 phases),MG and SOL did concentric contraction. At 3-6 phases during dorsiflexion,velocity of TA (M value:-37.66,-53.00, -60.66, -56.00 mm/s) in the young group is higher than in the elderly group (M-value:- 30.33, - 42.49, - 53.00, - 48.67 mm/s),at 13—15 phases during plantar flexion,velocity of MG (M-value:- 47.66, - 60.00, - 66.33 mm/s) in the young group showed higher velocity than in the elderly group (M-value:-25.17,-37.99,-50.98 mm/s),at 12—14 phases during plantarflexion,SOL showed higher velocity in the young group (M-value:-27.21, -40.10, -49.13 mm/s) than in the elderly group (M-value:- 20.66,- 29.61,- 37.16 mm/s) ( all P ＜ 0.05).Conclusions During active ankle cyclic flexion-extension movement,velocity of TA,MG and SOL in the elderly group are decreased as compared to the young group. VE-PC MRI can reflect biomechanical characteristics of calf muscle in vivo,and provide a new kind of measurement for lower extremities.

Objective To investigate the maximum-tolerated dose (MTD) of cisplatin in docetaxel,cisplatin,and fluorouracil (TPF) induction chemotherapy followed by intensity-modulated radiotherapy (IMRT) and concomitant chemotherapy as well as the safety and short-term efficacy of TPF induction chemotherapy in the treatment of locally advanced nasopharyngeal carcinoma (NPC).Methods Thirtythree patients with locally advanced NPC were enrolled in this trial.The MTD of cisplatin was determined by dose escalation study,and the short-term efficacy and toxicities were evaluated.Results When the doses of docetaxel and fluorouracil were 60 mg/m2 d1 and 550 mg/m2 d1-5,respectively,the MTD of cisplatin was 65 mg/m2 d1.In this regimen (repeated every 3 weeks),grade 3-4 toxicities included neutropenia (67％),febrile neutropenia (9％),diarrhea (21％),and oral mucositis (6％).Except those who experienced dose-limited toxicity,other patients completed the whole treatment schedule.After TPF induction chemotherapy,the overall response rate was 97％,and the complete response rate was 21％.Conclusions In the endemic areas of NPC,induction chemotherapy with docetaxel (60 mg/m2 d1),cisplatin (65 mg/m2 d1),and fluorouracil (550 mg/m2 d1-5),which is repeated every 3 weeks,is proved safe and effective for Asian patients with locally advanced NPC.

Objective To assess the effects of rehabilitation training on lower extremity muscle function in stroke patients using velocity-encoded phase-contrast MRI ( VE-PC MRI). Methods Twenty-nine stroke patients at the convalescence stage were divided into a treatment group (14 cases) and a control group (13 cases).The subjects performed calf muscles stretches supine in a scanner bed with voluntary ankle flexion-extension movements.Imaging data were collected from the tibialis anterior muscle (TA),the medial head of the gastrocnemius (MG) and the soleus muscle (SOL) of the affected side.The treatment group also underwent rehabilitation including treadmill training,while the control group received only walking training without the treadmill.Barthel index (BI) and Berg balance scale (BBS) scores were measured after rehabilitation. Results Compared with baseline,the contraction velocity of the TA (phases 2 to 7),the MG (phases 12 to 18 ) and the SOL (phases 13 to 16) on the affected side increased significantly in the treatment group.In the control group,the contraction velocity of the calf muscles on the affected side improved,but fewer phases were significant-for the TA phase 4,for the MG phases 13 to 15 and for the SOL phase 15.In both groups,BBS and BI scores improved significantly compared with baseline.The average improvement in the treatment group was significantly greater than that in the control group. Conclusions Rehabilitation including treadmill training can improve calf muscle contraction function on stroke patients' affected side,and also their ADL performance and balance.VE-PC MR1 can provide quantitative in vivo measurements of the contraction function of stroke patients' calf muscles.

This paper presents and discusses the liquid density sensing potential of a delay line Lamb-wave sensor configuration, where Lamb wave is excited only by interdigital transducer (IDT), without membrane when fabricated. An optimized cut orientation and the normalized thickness of substrate by using genetic algorithm is presented to improve the sensitivity of the sensor and to get low noise. Experimental measurements performed on Lamb-wave device fabricated from Y-Z LiNbO3 in a delay line configuration are found to be in agreement with theoretical calculations.
Algorithms ; Biosensing Techniques ; instrumentation ; methods ; Equipment Design ; Models, Theoretical ; Sensitivity and Specificity ; Transducers ; Ultrasonics ; Water ; analysis ; chemistry