Objective To explore the effect of the ?-blocker —metoprolol on the treatment of vasovagal syncope(VVS) in children.Methods Twenty-nine children with unexplained syncope and positive responses to head-up tilt test(HUT) were included in the study.Sixteen of them took metoprolol(treatment group) and 13 of them took vitamin B or oryzanol (control group) at least 2 weeks and HUT were repeated and syncope episodes were observed.Results In treatment group,9 of 16 patients had no syncope episode while 5 of 16 patients had fewer syncope episodes,1 case had more syncope episodes,and 1 case remained the same.HUT were repeated and 6 of 9 cases had negative outcome.In control group,1 of 13 patients had no syncope episode while 5 of 13 patients had fewer syncope episode,3 cases had more syncope episodes and 4 cases remained the same.HUT were repeated and 3 of 7 cases had ne-(gative) outcome.Conclusion These results indicate that adminstering metoprolol orally may be effective for VVS in children.

Objective To study the characteristics and clinical features of positive response during head - up tilt test (HUT) in children. Methods Forty- nine cases of syncope and aura of syncope were included in the study. All of them underwent HUT (tilt angle 60 degree,lasting 45 minutes). During the test,children' blood pressure,heart rate.electrocardiography and clinical symptoms and signs were dynamically observed. Results The common syncope aura symptoms were headache, dizziness, chest distress, difficulties in breathing, pale, perspiration, blurred vision, auditus depression and symptoms related to digestive symptoms. Among the 28 positive cases, 7 cases were of vaso - inhibitory pattern (25%), with a decrease in blood pressure and an increase in heart rate, 3 cases inhibitory pattern (11%), with a decrease in heart rate but withoilt'blood pressure changes, 4 cases mixed pattern (14 %), with decreases in heart rate and blood pressure obviously, 10 eases POTS (36%), with an increase in heart rate by 30 bpm or up to 120 bpm within 10 minutes while testing, and 4 cases orthostatic hypotension (14%), with a decrease in blood pressure within 3 minutes. Conclusion HUT can be regarded as the main tool in differential diagnosis of unexplained syncope in children.

China ; Congresses as Topic ; Fatty Liver ; Humans

OBJECTIVETo study the effects of arsenic trioxide (As2O3) on the proliferation and the migration force of human breast cancer SKBR-3 cell and the expression of Notch1.

METHODSSKBR-3 cells were cultured with different concentrations of As2O3 for 24 h and with the final concentration of 8 micromol/L for 24, 48, and 72 h. The effects of As2O3 on the cell proliferation of SKBR-3 were detected by MTT assay. The effects of the migration force of SKBR-3 cells were detected by Transwell. The expression of Notch1 mRNA was detected using reverse transcription polymerase chain reaction (RT-PCR). The expression of Notch1 protein was detected using Western blot.

RESULTSAs2O3 could significantly inhibit the proliferation of SKBR-3 cells in a concentration- and time-dependent manner (P < 0.05). It also could inhibit the migration force of SKBR-3 cells (P < 0.05). Results of RT-PCR and Western blot showed that Notch1 mRNA and protein levels obviously decreased (P < 0.05).

CONCLUSIONAs2O3 could inhibit the expression of Notch1 and the cell proliferation and the migration force of SKBR-3 cells, which primarily revealed that As2O3 might affect the biological behavior of human breast cancer cells possibly through Notch1 signaling pathway, thus providing theoretical and experimental bases for treating breast cancer by arsenic.

Arsenicals ; pharmacology ; Breast Neoplasms ; metabolism ; Cell Line, Tumor ; Cell Movement ; drug effects ; Cell Proliferation ; drug effects ; Female ; Humans ; Oxides ; pharmacology ; RNA, Messenger ; genetics ; Receptor, Notch1 ; metabolism ; Signal Transduction ; drug effects

AIM:To investigate the effects of curcumin on the abilities of migration and invasion in the lung cancer PC-9 cells, and to observe the relationship between curcumin and nectin-4 expression.METHODS:The viability, migration and invasion of lung cancer PC-9 cells treated with curcumin or transfected with siNectin-4 were measured by MTT assay, wound healing test and Transwell assay , respectively.The protein levels of nectin-4, p-AKT and AKT in the PC-9 cells treated with curcumin or transfected with siNectin-4 were detected by Western blot .RESULTS:Curcumin in-hibited the viability of PC-9 cells.The wound healing rates and the numbers of the transmembrane cells in curcumin 10μmol/L and 20 μmol/L groups were decreased compared with control group without curcumin treatment .The expression level of nectin-4 was reduced after curcumin treatment for 24 h.The viability of the PC-9 cells was significantly inhibited after transfected with siNectin-4 for 48 h or 72 h (P<0.01), and the wound healing rates was decreased in siNectin-4 group compared with NC group (P<0.01).The numbers of the transmembrane cells in siNectin-4 group was significantly reduced (P<0.01).Curcumin and knockdown of nectin-4 suppressed the activation of AKT pathway in PC-9 cells.In si-Nectin-4+curcumin group , the cell viability reduced compared with curcumin group , and wound healing rates , cell inva-sive ability and AKT phosphorylation levels were decreased .CONCLUSION:Curcumin inhibits migration and invasion of the lung cancer PC-9 cells via down-regulation of nectin-4 expression and inhibition of AKT pathway .

Objective To explore the cause, influencing factor and possible solving method of transient adverse reactions during the operation. Methods Sixteen healthy beagles were undergone virtual PLDD. The changes of vertebral discs and the surrounding tissues were observed by high resolution CT and MRI at different periods after the operation, and the same investigation procedure was carried out after the sacrifice of beagles. Results The beagles of the conventional vaporization group occasionally had limb tic and whining in the operations. Pieces of necrosis and edema could be found in the tissues of intervertebral foramen at the paracentetic side. The histological changes in the negative pressure suction group were less than those in the conventional group. Conclusion The reversible damages of the surrounding tissuses were observed in the conventional group and continuing negative pressure suction during the operations can prevent the damages to the surrounding tissues, all of the changes could be clearly displayed by CT and MRI scan.

Contemporary hospital information systems normally contain multiple applications,which are traditionally deployed as one application per server.More servers in the system will incur high system costs,low server efficiency and poor management and maintenance.The information system reform project of Wuxi Maternal and Child Health Hospital called into play the virtualization based on VMware.The project brought forth a number of merits,namely sizably raising efficiency of servers integration,simplifying server group management,reducing cost and promoting hospital informationization.

Objective: To establish a multiplex PCR-microarray method for detecting important enteropahogens.Methods: Uniplex and multiplex PCR were performed to obtain the best primer sets for identifying the target bacteria at species and multi-species level.Fluorescent dyes were mixed into PCR reaction to determine whether it can affect the efficiency of amplification.To improve the efficiency of microarray,a 35 pairs primer-labeling system was optimized based on the hybridization results to find the best combination to avoid false negative results.Results: Specific PCR products were all obtained using species-specific primer sets.More preferential amplification may happen when more primer pairs were added to the reaction.The hybridization results showed a positive association between the efficiency of multiplex-PCR and signal intensity.Conventional PCR yielded more products than fluorescent dyes labeled PCR.Thirty-five primers were divided into three different combinations to label target respectively,hybridization results showed a high specificity.Conclusion: Mixing fluorescent dyes into PCR may reduce the efficiency of amplification and hybridization,but may have no effect on the analysis of hybridization results.The hybridization efficiency of microarray depends on the amplification efficiency of multiplex PCR.For microarray target labeling,three primer sets could be used to avoid negative hybridization led by preferential amplification of multiplex-PCR.It indicates that the multiplex PCR-microarray method is an attractive diagnosis tool for the high-throughput identification of enteropathogenic organisms especially for multiple causative agents and epidemiological investigations.

Objective To compare the clinical efficacies of totally laparoscopic and laparoscopy-assisted radical total gastrectomies.Methods The retrospective cohort study was conducted.The clinicopathological data of 373 patients with gastric cancer who underwent totally laparoscopic or laparoscopy-assisted radical total gastrectomies from the 7 medical centers in China (82 patients in the Affiliated Hospital of Qinghai University,80 in the Traditional Chinese Medicine Hospital of Guangdong Province,60 in the First Affiliated Hospital of Xiamen University,51 in the Hangzhou First People's Hospital,46 in the First Affiliated Hospital of Xi'an Jiaotong University,30 in the Second Affiliated Hospital of Jilin University and 24 in the Xijing Hospital of the Fouth Military Medical University) between January 2015 and December 2016 were collected.Of 373 patients,the 183 and 190 patients were respectively divided into the totally laparoscopic group (undergoing totally laparoscopic radical total gastrectomy) and laparoscopy-assisted group (undergoing laparoscopy-assisted radical total gastrectomy),including 63 and 19 in the Affiliated Hospital of Qinghai University,36 and 44 in the Traditional Chinese Medicine Hospital of Guangdong Province,25 and 35 in the First Affiliated Hospital of Xiamen University,20 and 31 in the Hangzhou First People's Hospital,10 and 36 in the First Affiliated Hospital of Xi'an Jiaotong University,17 and 13 in the Second Affiliated Hospital of Jilin University,12 and 12 in the Xijing Hospital of the Fouth Military Medical University.Routine five-port method was applied for laparoscopic radical total gastrectomy and D2 lymphadenectomy.Roux-en-Y anastomosis was applied for digestive tract reconstruction,and digestive tract reconstruction was performed under laparoscopy in the totally laparoscopic group and via upper abdominal median incision in the laparoscopy-assisted group.Observation indicators:(1) operation and postoperative situations;(2) follow-up and survival situations.Follow-up using outpatient examination and telephone interview was performed to detect the postoperative overall survival and tumor recurrence or metastasis up to March 2017.Measurement data with normal distribution were represented as x±s.Comparison between the groups was analyzed by the t test.Measurement data with skewed distribution were represented as M (range).Comparisons of count data were analyzed using the chi-square test and Fisher exact probability.Results (1)Operation and postoperative situations:all the patients in the 2 groups underwent successful operations,without perioperative death.Esophagojejunostomy methods of 183 patients in totally laparoscopic group:conventional circular stapler method were performed in 28 patients,anti-puncture circular staplar method in 6 patients,OrVilTM method in 5 patients,functional end-to-end esophagojejunostomy method in 65 patients and peristalsis side-to-side esophagojejunostomy method in 79 patients.Conventional circular stapler method was applied to 190 patients in the laparoscopy-assisted group.Operation time,time of esophagojejunostomy,length of assisted incision,using time of analgesics and expenses of digestive tract reconstruction were (238± 55)minutes,(29±9)minutes,(5.1 ± 1.1)cm,(2.2±l.0)days,(18 332±2 141)yuan in the totally laparoscopic group and (217±39)minutes,(26±7)minutes,(7.8 ±2.0)cm,(2.7± 0.9)days,(16 237 ± 1 923)yuan in the laparoscopy-assisted group,respectively,with statistically significant differences between the 2 groups (t =4.324,3.455,-16.835,-5.561,9.949,P＜0.05).The cases with postoperative overall complications,anastomosis leakage,anastomosis stricture,anastomosis bleeding and expenses of esophagojejunostomy were respectively 24,9,7,5,(9 668±2 814)yuan in the totally laparoscopic group and 24,8,9,6,(9 331 ±2 067)yuan in the laparoscopy-assisted group,with no statistically significant difference between the 2 groups (x2 =0.036,0.107,0.189,0.059,t=1.322,P＞0.05).All the patients with postoperative complications were cured by symptomatic treatment.(2) Follow-up and survival situations:of 373 patients,336 were followed up for 4-26 months,with a median time of 13 months,including 166 in the totally laparoscopic group and 170 in the laparoscopy-assisted group.During the follow-up,cases with overall survival,tumor recurrence and tunor metastasis were respectively 150,10,16 in the totally laparoscopic group and 154,9,16 in the laparoscopy-assisted group (10 and 9 patients in the totally laparoscopic and laparoscopy-assisted groups with simutaneous tumor recurrence and metastasis),showing no statistically significant difference between the 2 groups (x2 =0.075,0.010,P＞0.05).Conclusions Total laparoscopic and laparoscopyassisted radical total gastrectomies are safe and feasible,with equivalent overall outcomes and effects of esophagojejunostomy.Compared with laparoscopy-assisted radical total gastrectomy,the postoperative pain time of patients in total laparoscopic radical total gastrectomy is less,but there are longer time of esophagojejunostomy and higher expenses of digestive tract reconstruction.

AIM:To explore the molecular mechanism through which curcumin reverses hepatocyte growth factor (HGF)-induced resistance to gefitinib in lung cancer cells.METHODS:The methods of MTT assay, wound healing assay and Western blot were used to observe the effects of HGF, curcumin and gefitinib on the migration, drug susceptibility, epithelial-mesenchymal transition, and related signaling pathways in the PC9 lung cancer cells.RESULTS:HGF reduced susceptibility of the PC9 cells to gefitinib, and curcumin significantly reversed HGF-induced resistance to gefitinib.HGF induced migration and epihelial-mesenchymal transition, and promoted c-Met/AKT/mTOR pathway activation in the PC9 cells.Gefitinib alone did not prevent the above activities.However, combined with curcumin, gefitinib prevented the above activities.CONCLUSION:Curcumin reverses HGF-induced resistance of the PC9 cells to gefitinib by preventing epithelial-mesenchymal transition and inhibiting c-Met/AKT/mTOR activation.