Tumor cell metastasis is a process of extracellular matrix hydrolyzed by protease, where tumor cells traverse the defect in the extracellular matrix into the lymphatic system and the capillaries to form new metastasis hematogenously.Matrix metalloproteinases (MMPs) are a kind of enzymes closely related to the metastasis.MMP, especially the relationship between MMP-9 and endometrial cancer metastasis in this paper will be summarized to get a better understanding about it.

Objective To study the effect of RF catheter ablation of verapamil-sensitive idiopathic left ventricular tachycardia according to the re-entrant route mapped during electrophysiologic test. Methods 6 patients (4 male & 2 female) suffered from the ioliopathic left venticulan tachycondia (ILVT). After placing the catheter in the right ventricular apex and the coronary sinus, a radiofrequency (RF) catheter and a octapolar catheter (mapping catheter) with an interval of 2-8-2 min were introduced through the right and left femoral arteries. The mapping catheter recorded the His potential (HP), the left bundle potential (LBP), the left posterior fascicle Purkinje potential (PP) and V electrogram sequentially, PP was the first potential to be detected with the RF catheter during TV, we searched for the earliest PP recording site near the couple of electrodes of the mapping catheter recording PP and ablated it. Results In the first 3 cases, ablation didn′t have effect at sites recording the earliest V electrogram without PP and it was finally successful at the sites recording the earliest PP. Since the fourth case all patients needed only one application because ablation was carried out only at the site recorded the earliest PP. Patients have been followed for 6-20 months without antiarrhythmic drugs, and none of them has had a recurrence of VT. Conclusion The mapping on the left ventricular septum is not only important to study the reentrant route in ILVT, but also helpful for clinical treatment of ILVT. It shortens the operation time and minimizes injury of cardiac muscle due to noneffective ablation.

AIM To investigate whether there is vasodilator nerve innervation in rat hind limb and what the nature of vasodilator nerve is. METHODS Wistar rats were treated with reserpine 1 mg?kg -1 ip at 24 h before experiment. The rats were pithed and the hind limb vascular bed was perfused with Krebs-Henseleite solution containing 1 mmol?L -1 phenylephrine at 2 ml?min -1 speed. The hind limb perfused pressure (HPP) as a main index was continuously recorded. Spinal cord electrical stimulation (SES) was repeatedly applied via an electrode at L 1～2 level of lumber vertebra. The various tool drugs were administered by iv or infusion by added to persusion solution. The data is expressed as decrease percentages of HPP increased by continuous infusion of phenylephrine. RESULTS HPP was increased from (5 7?1 5) to (21 6?3 7) kPa ( n =37) after phenylephrine perfusion. SES caused a fall of HPP in frequency dependent and voltage dependent manner. An optimum parameters of SES (10 Hz, 50 V and 1 msec) was selected to observe effects of various tool drugs on depressor response of HPP to SES. Tetrotodoxin (0 3 ?mol?L -1 ) abolished the effect completely. L NAME (10 ?mol?L -1 ), a NO synthase inhibitor, had no effect. Ganglion blocker arfonad (110 mg?kg -1 , iv, M R blocker atropine (10 ?mol?L -1 ), ? receptor blocker propranolol (1 ?mol?L -1 ) and P 1 receptor blocker aminophylline (10 ?mol?L -1 ) had also no effect. Glibenclamide (0 1 mmol?L -1 ), an ATP sensitive K + channel blocker, markedly abolished and slightly reversed the effect. CONCLUTION The nonadrenergic noncholinergic vasodilator nerve exists in rat hind limb and is not nitroxidergic or purinergic nerve. This nerve may be peptidergic nerve which releases some peptide such as CGRP and the major mechanism of vasodilatation probably activates the ATP sensitive K + channel.

Objective:To find out the data of the micturitions in healthy young people with the remote & mobile voiding diary monitoring system.Methods:Twenty healthy young people were studied and ten of them were female.The ages ranged from 22 to 35 years(the mean age:27.4 years).The females were 22-33 years old(the mean age:26.4 years) and the males 24-35 years old(the mean age:28.4 years).With the remote & mobile voiding diary monitoring system,their voiding information was collec-ted.Through bluetooth,the voiding information was sent to the patient's intelligent cell phone from the collector,then stored directly by intelligent cell phone and wirelessly transmitted to the workstation in the hospital.All of them completed the voiding diaries for 7 days and the data were analyzed.Results:The average micturition of the young healthy people was 5.6 times(3.4-7.4) per 24 hours,in which 5.3(3.4-7.3) times were in the daytime and 0.3(0-1.3)times in the night.The functional voiding vo-lume was 318 mL(66-642 mL).The mean voiding volume in 24 hours was 1 724 mL(1 152-2 415 mL),in which 1 289 mL(786-2 039 mL) was in the daytime and 435 mL(292-805 mL) in the night.The mean drinking volume was 1 022 mL(453-1 721 mL)in the daytime and 7 mL(0-43 mL) in the night.The nocturia index(Ni)was 1.03,the nocturnal polyuria index(NPi) 26%,and the nocturnal bladder capacity index(NBCi) 0.27.Conclusion:The remote & mobile voiding diary monitoring system can help us get the objective voiding information from young health people for the first time.It is reliable,maneuverable and can be widely used in clinical diagnosis.

A thermal desorption ( TD) device was developed and coupled to gas chromatography ( GC) or gas chromatography-mass spectrometry ( GC-MS ) for the qualitative and quantitative analysis of semi-volatile organic compounds on atmospheric particulate matters ( PM ) . The TD was operated by direct heating and placed on the GC injector, leading to high heating rate and easy transfer of analytes to GC without focusing of analytes by cold trap. For establishing the TD-GC method, the materials used for supporting PM samples, temperature and time of thermal desorption, and types of sample injection were investigated for detection of sixteen polycyclic aromatic hydrocarbons ( PAHs) and nine n-alkanes. The limits of detection of the proposed TD-GC method were in the range of 0. 014-0. 093 ng for PAHs, and 0. 016-0. 026 ng for n-alkanes, respectively, with the correlation coefficients of correlation above 0. 9975. The TD-GC method was applied to the determination of trace PAHs and n-alkanes on PM10 samples from three cities. The recoveries were in the range of 95%-135% ( PAHs) and 95%-115% ( n-alkanes) , respectively. Finally, the TD was coupled to GC-MS for comparison of the contents of PAHs and n-alkanes on PMx with different particulate size ( x=10 , 5, 2, 1, 0. 5, 0. 25, 0. 1).

Postoperative patients who underwent digestive tract reconstruction have a high risk of malnutrition and absorbing bar-rier. Enteral nutrition support can effectively maintain and improve the nutritional status of the human body, shorten hospital stay, and reduce complications. Therefore, the enteral approach is the preferred postoperative means of nutrition support. This article retrospec-tively summarizes the appropriate time to start enteral nutrition support therapy after digestive tract reconstruction, the proper selection of the mode of enteral nutrition support, the different enteral nutrition preparations, and the treatment of postoperative complications.

Objective To explore the reason for remedy radical operation after endoscopic submucosal dissection (ESD) for early gastric cancer.Methods The clinical data of 26 early gastric cancer cases who received remedy radical gastrectomy after ESD between January 2012 to March 2015 in Nanjing Drum Tower Hospital were analyzed retrospectively.Results All cases were followed up and mid follow-up was 25 months.There was no death nor tumor reccurence cases during the follow-up.Three cases suffered from complications in radical surgery for gastric cancer including afferent jejunal loop obstruction,adhesive intestinal obstruction,stomach paralysis respectively,all were cured by conservative therapy.Postoperative pathology found lymph node metastasis in 3 cases.Conclusions En bloc resection and negative resection margin,as well as free lymphatic metastasis are two important factors determing the survival of early gastric cancer patients undergoing ESD treatment.

Objective To analyze the present situation of medical service prices in Beijing,and provide scientific basis in order to carry out the reform of medical service prices of the city.Methods Literature review method to collate the administration policy of medical service price in Beijing,and the method of statistical analysis to compare the Beijing medical service prices with 1 9 other provinces across the country.Results The number of medical service projects (4 613 )in Beijing is higher than the national average (4 507),but the average medical service prices (423 yuan)in Beijing is lower than the national average (609 yuan),and medical service price and the regional economic level has no statistical significance Conclusion Medical service prices of Beijing need to be adjusted,and a reform of medical service prices in Beijing should be implemented by the Development and Reform Commission,Health and Family Planning Commission.

Objective To explore the clinical efficacy of navigation of sentinel lymph node (SLN) combined with endoscopic submucosal dissection (ESD) for non curative treatment of early gastric cancer.Methods Clinical data of 9 cases with early gastric cancer treated with ESD from August 2015 to December 2015 were enrolled.The SLNs were explored by laparoscopy after nano carbon or indocyanine green(ICG) was injected under endoscopy.Then all stained nodes were resected by laparoscopy.Results The mean number of SLN were 2.75±1.50 in ICG group,which was significantly smaller than the number in nano carbon group(8.40±4.93) according to the laparoscopic pathology,so the accuracy of ICG was higher than that of nano carbon.But ICG performed better in development.The postoperative complications such as postoperative intestinal obstruction,enteritis and gastric paralysis were found in 5 patients of nano carbon group.But no serious complications after operation were found in patients of ICG group.Conclusion Application of ICG can help avoid the excessive removal of tissue,and reduce the incidence of complications.ICG,as a new type of tracer for early gastric cancer,shows good application prospects.

Objective:To explore the cognition of undergraduates on advance directives in a medical universi -ty, and to analyze the affect factors on cognition status of advance directives .Method: Total 594 undergraduates were selected by stratified cluster random sampling and this study conducted a face to face interview using self -de-signed questionnaire .Results: The cognitive status on advance directives was poor .This study found the inde-pendent variables of the gender , religion, the self-reported health, the average monthly living expenditure , the survival time and quality choice and the type of health insurance were the effect factors (P<0.05).Conclusion:the undergraduates′cognitive status on advance directives was poor in this medical university , and we need adopt relevant measures to improve the cognitive of undergraduates on advance directives .