Objective To investigate the safety and effectiveness of endoscopical therapy for small grastric stromal tumor( d<2 cm) . Methods Clinical records of 80 patients dignosed as having small grastric stromal tumor by pathology and immunohistochemistry were retrospectively analyzed. Endoscopic or laparo?scopic or open surgery was performed, so patients were divided into endoscopic treatment group ( n=37) and surgical treatment group ( n=43) accordingly. Perioperative period data, effectiveness and follow?up data were analysed. Results Thirty?five cases( 94?6%) of endoscopic treatment group were successfully treated by endoscopic surgery. Intraoperative perforation occurred in 8 cases, among which 2 cases transferred for conventional operations.Pneumoperitoneum occurred in 2 cases (better after symptomatic treatment), while no serious infection or perioperative death occurred. There were no significant differences in the complete re?section rate[ 91?89% ( 34/37) VS 100?0%( 43/43) , P=0?095) , the incidence of postoperative complica?tions[5?71%(2/35)VS 2?33%(1/43),P=0?855)or the improvement of postoperative symptoms[93?10%( 27/29) VS 85?71% ( 30/35) , P=0?589] ,while statistically significant differences were found in operation time[(37?41±13?45)min VS(84?56±38?37)min, P=0?000], intraoperative blood loss[(5?65±5?88)ml VS(31?48 ±39?57)ml, P=0?000], postoperative feeding time[(2?47±0?61)d VS(3?26 ±1?27)d, P=0?001], postoperative hospital stay[(5?76 ±2?28)d VS(7?64±2?99)d,P=0?022],and medical expenses [(18 554?4±9 736?45)yuan VS(31 138?11±1 206?24)yuan, P=0?000]. Conclusion Endoscopic re?section is safe and effective for small grastric stromal tumor with minimal invasion,simple procedure, faster recovery and less economic burden for the patients.

Objective To study the relationship of insulin-like growth factor-Ⅰ receptor(IGF-ⅠR)and carcinogenesis of gastric cancer.Methods The expression of IGF-ⅠR was detected in 40 cases of resected gastric cancer tissues and adjacent normal gastric mucosa by immunohistochemistry.The expression of IGF-ⅠR in gastric cancer cell lines(MGC803 and SGC7901)was detected by Western Blot.siRNAs targeted to IGF-ⅠR were designed,synthesized and transfected into MGC803 cells,the changes of IGF-IR protein level were detected by Western Blot at 48 h after transfection,the cell proliferation was examined by MTT,and then the growth curve was obtained.Results The positive rate of IGF-IR expression in gastric cancer tissues was 75.5%,significantly higher than that of adjacent normal tissues (25%,P＜0.01).The expression level of IGF-IR was related with TNM stage,lymphnode metastasis (P＜0.05),but not related with sex,age,histological differentiation,invasion depth of gastric cancer (P＞0.05).Intense expression of IGF-ⅠR was showed in gastric cancer cell lines.The inhibition ratio of IGF-ⅠR expression in sigNAl group were 89.80%±4.10%,the cell proliferation decreased to mininlunl level at the fifth day aftertransfection(by 29.0%±4.0%of mock-treated group),the cell number decreased by 21.15%±1.10%of mock treated group at the same time.Conclusions IGF-ⅠR is over-expressed in gastric cancer cells and can be effectively silenced by RNA interferes,therefore the growth of tmnor cell Was inhibited.Thus,it indicates that IGF-ⅠR may be a promising target for gene therapy of gastric cancer.

Objective To investigate the potential of AFP-targeted ultrasmall superparamagnetic particles of iron oxide (USPIO) molecular probe in specific detection of hepatocellular carcinoma (HCC) with MRI.Methods The targeted probe was synthesized by conjugating AFP antibody with modified USPIO.Two groups treated with AFP-USPIO and USPIO were set up in the study.The HepG2 cells were incubated with AFP-USPIO or USPIO (100 μg/ml) respectively with the dosage of 50 μ1,100 μl or 150 μl for 4 hours,followed by MR imaging in vitro.The signal-noise ratio (SNR) of the cells on T2-weighted image (T2WI) was measured.The rat models with orthotopic HCC were divided into two groups with 5 rats for each group at random.Pre-and post-contrast enhanced (after 1 hour) MR imaging were performed with caudal vein injection at a dosage of 20μg/ml.The contrast noise ratio (CNR) on T2WI and the difference of CNR between pre-and post-enhancement or between both groups were calculated.The relationship of SNR or CNR with the iron particles in cells or tumors was confirmed by Prussian blue iron staining.Results Cytology experiment showed the SNR in both groups was decreased with the increase of the dosage of AFP-USPIO or USPIO,indicating statistically significantdifference in SNR among three different doseage groups (P＜0.05).Prussian blue iron staining showed that the iron particles in cells were increased with the increase of AFP-USPIO dosage,and was negatively correlated with SNR (P=0.00,r=-0.926).However,the iron particles were less in cells in USPIO group.The CNRs of liver tumors in Wistar rat of pre-and post-AFP-USPIO injection were 2.05±0.88 and 0.96±0.31 respectively,indicating a significant difference (P=0.028,t=3.380).However,the CNRs in USPIO group,2.25±1.50 and 2.57±1.49,showed no statistical difference (P=0.275,t=1.263).The CNR after enhancement also had a statistical difference between both groups(P=0.042,t=3.487).Pathological results confirmed more iron particles in tumor tissues in AFP-USPIO group,whereas less in USPIO group.Conclusion AFP-USPIO molecular probes can initiatively target to the HepG2 cells and the liver cancer of rat models expressing AFP,which may help to achieve the specificity of MR imaging in the diagnosis of HCC.

Objective To discuss the cause and treatment strategy for open laryngotracheal trauma.Methods The clinical data of 38 cases with open laryngotracheal trauma admitted from 1998 to 2012 were collected and analyzed.Of them,one patient died in emergency department despite energetic resuscitation,37 were hospitalized and given advanced treatment after life support measures in emergency department.They were treated with tracheotomy before or during operation.Of them,32 patients were regularly followed up for imaging studies.Result Except 1 patient died of exsanguination from carotid artery rupture,the other 37 survived after successful treatment.Twenty patients were treated with debridement and suture of the wounds and laryngoplasty (20/37,54.1％),8 patients were operated with laryngoplasty plus intraluminal stents implanted (8/37,21.6％) ; the rest 9 patients (9/37,24.3％) were separately given placement of nickel-titanium shape memory alloy stent (n =2),laryngofissure with rubber gloves throat models implanted and laryngoplasty (n =3),linear silicone tube implanted and laryngoplasty with trans-cervical approach (n =1) and tracheoesophageal fistula neoplasty with laryngoplasty and laryngofissure (n =3).The operated patients were followed-up for 0.5 to 3 years after discharge.Of them,35 patients (35/37,94.6％) had successful decannulation,breathing smoothly and swallowing normally,23 patients (23/37,62.2％) had almost normal pronunciation,12 patients (12/37,32.4％) had different degrees in hoarseness of voice,and 2 patients (2/37,5.4％) were referred to other hospital because of failure in extubation with severe stenosis of laryngotrachea.Conclusions When the patients with open laryngotracheal trauma were treated,the essential strategy was to prevent shock,hemorrhage,and asphyxia.In the case of patent respiratory tract and stable vital signs,laryngotracheal reconstruction should be carried out as soon as possible to prevent complications,thereby obtaining good therapeutic effect.

Background and purpose:Few reports demonstrate the relation between the expression of RIZ1 which has been found to be a tumor suppressor gene recently and leukemia. This study investigated the effect of RIZ1 expression on the apoptosis of human myeloid leukemic cell lines. Methods:The expression of RIZ1 mRNA was observed in human myeloid leukemic cell lines AML193, KG-1, KG-1a, K562 and Ery-1 by reverse transcription polymerase chain reaction assay. RIZ1 was forced to express in the expression-lacking cell lines by transfecting pRIZ1 RH containing full length of RIZ1 cDNA to the cell lines. As controls, the cell lines were transfected with pcDNA3.1. The apoptotic cells were determined by using the annexin V/propidium iodide stain 24 h after transfection.Results:Among the 5 cell lines, no expression of RIZ1 mRNA had been detected in AML193 and low expression in K562. The forced expression could be found in both cell lines 24 h after transfection of pRIZ1 RH, accompanied by obviously increased apoptotic rates which were (22.7? 0.7)% in AML193 and (28.6?1.2)% in K562 compared to controls (11.7%?1.6% and 9.0%?0.8%, respectively) (P

Objective : To understand the prevalence of overweight and obesity, and the influencing factors among students aged 7-22 years in Zhejiang Province. Methods : Stratified random cluster sampling was used to randomly select students aged 7-22 years in 11 prefectures of Zhejiang Province in 2019. Height and weight were measured. The general information, dietary habits and living habits of students were collected using the Student Health Status and Influencing Factors Questionnaire. The multivariate logistic regression model was used to analyze the influencing factors of overweight and obesity. Results : A total of 33 800 respondents were included, 7 685 (22.74%) were overweight/obese, 4 729 ( 13.99% ) were overweight, and 2 956 ( 8.75% ) were obese. The multivariate logistic regression analysis suggested that boys ( OR=2.059, 95%CI：1.949-2.175), not living on campus( OR=1.306, 95%CI: 1.214-1.405), history of alcohol consumption ( OR=1.158, 95%CI：1.083-1.238 ), average daily consumption of sugar-sweetened beverages in the past week ( less than once, OR=1.214, 95%CI: 1.103-1.336; once and more, OR=1.431, 95%CI: 1.259-1.626 ), average daily consumption of fries in the past week ( less than once, OR=1.171, 95%CI: 1.065-1.288; once and more, OR=1.266, 95%CI: 1.102-1.454 ), and average daily consumption of sweets in the past week (less than once, OR=0.727, 95%CI: 0.658-0.802; once and more, OR=0.504, 95%CI: 0.444-0.572) were associated with overweight and obesity in students. Conclusion The prevalence rates of overweight and obesity among students aged 7-22 years in Zhejiang Province are 13.99% and 8.75%, respectively, which are associated with boys, not living on campus, and consumption of sugar-sweetened beverages, fries, sweets and alcohol.

This article was aimed to study the therapeutic effect of Chinese medicine Kun-Bao-W an (KBW) on sleep disorders among ovariectomized mice. A total of 60 female KM of adult mice were randomly divided into four groups, which were the sham-operated group, model group, diazepam group, and KBW group, with 15 rats in each group. Rats in the sham-operated group were only removed small amount of fatty tissue around the ovaries. Bilateral oophorectomy was given on mice in other groups. In the KBW group, 28 days after the operation, KBW was intragastrically administered (1.667 g·kg-1) every day for 28 days. Mice in the diazepam group were intragas-trically administered (1.25 g·kg-1) 1 h before testing. The observation was made on effects of KBW on locomotor activity, sleeping time of mice induced by pentobarbital sodium and the organ coefficients of uterus. The results showed that compared with sham-operated group, locomotor activity and rearing behavior increased obviously in the model group (P < 0.01). The diazepam group can significantly reduce locomotor activity in ovariectomized mice (P < 0.01), and decrease the number of rearing behavior mildly with no statistical difference. KBW can reduce lo-comotor activity mildly but without effect on rearing behavior in ovariectomized mice. Diazepam can markedly pro-long the pentobarbital sleep time in ovariectomized mice (P < 0.01). KBW can prolong the pentobarbital sleep time and shorten the process of falling into sleep mildly with no statistical difference. There was no significant ef-fect on organ coefficients of uterus in ovariectomized mice by KBW or diazepam. It was concluded that KBW had mild effect on improving sleep disorders in ovariectomized mice.

This article was aimed to study the sedative and hypnotic effects of different eluents of Shuangxiatang (SXT). The effects of SXT water decoction, water eluent, 20%, 70% and 95% alcohol eluent on spontaneous ac-tivity and the sleeping induced by subthreshold dose of pentobarbital sodium were measured. The results showed that the SXT decoction, 20% and 95% alcohol eluent can significantly decrease the number of rearing in mice with the percentage of 78.5%, 78.3% and 62.5%, respectively. SXT water eluent and 70% alcohol eluent can significantly decrease the spontaneous activity of mice (P < 0.01), the number of rearing (P < 0.01) and grooming time (P < 0.05). SXT water decoction can significantly shorten sleep latency (P < 0.05), prolong sleep time (P <0.05), and increase rates of sleeping in mice. SXT water eluent can significantly shorten sleep latency in mice (P< 0.05), increase rates of sleeping in mice. SXT water decoction and water eluent have the sedative and hypnotic effects. And the effects are more than alcohol eluents.

Objective To investigate the effect of two different odontoblast inducer on the proliferation and apoptosis of rat adiposed-derived stem cells.Methods Adiposed-derived stem cells were collected by enzyme digestion from inguinal fat pads of 4 days post natal mice.Immunocytochemistry was performed to identify the cells.MTT and flow cytometry were tested the prolifera-tion and apotosis of adiposed-derived stem cells by co-cultured with tooth germ cell conditioned medium(TGC-CM)or dentin non-collagenous protein medium (DNCPM).Results Cells displayed a fibroblast-like appearance and positively expressed CD44 and CD105 when cufured to the secend yeneration.After 3 day the cells polarity changed by co-cultured.Count of cells were no obvious change by TGC-CM co-cultured,while that ruduced significantly by DNCPM co-cultured.It confirmed that the proliferation rate of ADSCs in TGC-CM group and control group is higher than DNCPM group(P <0.05),while the apotosis of that in DNCPM group is higher TGC-CM group(P <0.05).Compared with control group,the results had no significant difference(P >0.05).Conclusion TGC-CM may have more advantage as inducer in rat adiposed-derived stem cells differentiate into dentin like cells than DNCPM.

Objective To investigate the clinical and pathologic features of small gastrointestinal stromal tumors (small GISTs,d ＜ 2.0 cm).Methods Medical records of 95 patients undergoing surgery (endoscopic surgery,thoracoscopic/laparoscropic surgery and open surgery)and diagnosed as having GISTs by pathology and immunohistochemistry in Nanfang hospital from October 2003 to June 2014 were retrospectively analyzed.Based on clinical and pathological results,correlation analyses between risk factors for endoscopic ultrasonography(EUS) and Mitotic count(MI),clinicopathologic parameter and NIH risk classification were performed.Results Among 95 cases (104 lesions),88 were single,while 7 were multiple;81.7％ (85/104) small GISTs arose from stomach,including 87.1％ (74/85)in middle-upper stomach;5 cases (5.3％) presented calcification of different degrees,3 cases(3.2％) presented local necrosis and 2 cases (2.1％) with arrangement of epithelioid cells;88 cases (92.6％) were very low grade of NIH risk classification,6 cases (6.3％) were intermediate risk and 1 case(1.1％) was high risk.Positive rates of CD34 and CD117 were 95.8％ (91/95) and 96.8％ (92/95) respectively.The risk factors (border,mucosal surface,echo and heterogeneity) of EUS had no correlation with mitotic count(P＞0.05).The correlation analysis between clinicopathologic features and NIH risk classification revealed tumors more than 1.5 cm had a striking correlation with NIH risk classification (P＜ 0.05).Conclusion Most small GISTs,single or multiple,located at middle-upper stomach,were of very low or low risk,and have a favorable prognosis.But it has worse biological behavior and a higher grade risk when the diameter is more than 1.5 cm,intervention should be recommended.