Objective To study the effect of Ro60 on migration and invasion of lung adenocarcinoma A 549 cells. Methods We knocked down Ro60 and analyzed the ability of migration and invasion of A 549 cells.Quantitative real time ( RT)-PCR and Western blotting were performed to detect mRNA and protein levels of selected molecules associated with migration and invasion of neoplasm .Results When Ro60 was downregulated , the migration and invasion of A 549 cells decreased markedly.Meanwhile,the mRNA expression of matrix metalloproteinase (MMP)9,c-Src etc was observably reduced.Furthermore, downregulation of Ro60 diminished the expression of Src protein and the activation of MMP-9 protein.Conclusion Downregulation of Ro60 inhibits migration and invasion of A549 cells by regulating Src protein and activating MMP-9 protein.

Mammalian target of rapamycin (mTOR) plays essential roles in cell proliferation, survival and metabolism by forming at least two functional distinct multi-protein complexes, mTORC1 and mTORC2. External growth signals can be received and interpreted by mTORC2 and further transduced to mTORC1. On the other hand, mTORC1 can sense inner-cellular physiological cues such as amino acids and energy states and can indirectly suppress mTORC2 activity in part through phosphorylation of its upstream adaptors, IRS-1 or Grb10, under insulin or IGF-1 stimulation conditions. To date, upstream signaling pathways governing mTORC1 activation have been studied extensively, while the mechanisms modulating mTORC2 activity remain largely elusive. We recently reported that Sin1, an essential mTORC2 subunit, was phosphorylated by either Akt or S6K in a cellular context-dependent manner. More importantly, phosphorylation of Sin1 at T86 and T398 led to a dissociation of Sin1 from the functional mTORC2 holo-enzyme, resulting in reduced Akt activity and sensitizing cells to various apoptotic challenges. Notably, an ovarian cancer patient-derived Sin1-R81T mutation abolished Sin1-T86 phosphorylation by disrupting the canonical S6K-phoshorylation motif, thereby bypassing Sin1-phosphorylation-mediated suppression of mTORC2 and leading to sustained Akt signaling to promote tumorigenesis. Our work therefore provided physiological and pathological evidence to reveal the biological significance of Sin1 phosphorylation-mediated suppression of the mTOR/Akt oncogenic signaling, and further suggested that misregulation of this process might contribute to Akt hyper-activation that is frequently observed in human cancers.
Adaptor Proteins, Signal Transducing ; metabolism ; Animals ; Humans ; Mechanistic Target of Rapamycin Complex 1 ; Mechanistic Target of Rapamycin Complex 2 ; Models, Biological ; Multiprotein Complexes ; metabolism ; Phosphorylation ; Phosphothreonine ; metabolism ; TOR Serine-Threonine Kinases ; metabolism

OBJECTIVETo investigate the clinical advantage of the application of modified Roux-en-Y reconstruction after totally laparoscopic total gastrectomy.

METHODSClinical data of 36 patients who underwent totally laparoscopic total gastrectomy with Roux-en-Y reconstruction by one medical team for gastric adenocarcinoma between January 2014 and December 2014 in the Second Hospital of Jilin University were retrospectively analyzed. Patients were divided into classic Roux-en-Y group (CRY, 16 cases) and modified Roux-en-Y group (MRY, 20 cases) according to reconstructive methods. The data concerning the intraoperative and postoperative situation in two groups were compared.

RESULTSOperation was successfully completed in all the cases without conversion to laparotomy. Compared to CRY group, MRY group had shorter mean operative time [(260.9 ± 21.2) min vs. (287.9 ± 19.0) min, P=0.000], shorter mean reconstruction duration [(32.4 ± 9.2] min vs. (45.4 ± 13.2) min, P=0.001] and less intraoperative bleeding [(50.9 ± 23.5) ml vs. (67.0 ± 20.5) ml, P=0.000]. Jejunum mesentery dissection and jejunum resection were not necessary in MRY group. However, there were no significant differences in lymph nodes harvested, time to flatus, hospital stay and postoperative complications between two groups.

CONCLUSIONSAs compared to classic Roux-en-Y reconstruction, the modified Roux-en-Y reconstruction can simplify the surgical procedures and achieve similar efficacy. It is feasible and safe, and worth further promotion in clinical practice.

Anastomosis, Roux-en-Y ; Humans ; Laparoscopy ; Lymph Nodes ; Mesentery ; Operative Time ; Postoperative Complications ; Postoperative Period ; Retrospective Studies ; Stomach Neoplasms

Pre-hospital rescue is key to the emergency medical system. Based on the current pre-hospital emergency standardized system construction in China, the authors explored the standardization of pre-hospital emergency system construction, command dispatch and emergency service quality control standardization, pre-hospital classification standardization, pre-hospital emergency service capacity standardization, pre-hospital emergency and intra-hospital emergency connection standardization, standardized training for pre-hospital emergency doctors and nurses. These efforts aim to achieve such rescue and transfer criteria for patients, as " vicinity, urgency, professional needs, and intension of both patients and their families" . Such criteria if met can further reduce emergency response time and shorten the emergency radius, hence improving emergency medical services.

Objective To study the the feasibility of intestinal derotation maneuver in the resection of gastrointestinal neoplam localized in the vicinity of the ligament of Treitz.Method Intestinal derotation maneuver was applied in all the 9 case of gastrointestinal neoplasms near the ligament of Treitz,from January 2014 to January 2016,at the Second Hospital of Jilin University.The clinical date were retrospectively analyzed.Results Intestinal derotation maneuver were applied without failure in all the nine patients,the mean operation time were (195 ± 50) min,and the mean intestinal derotation maneuver time were (19 ±5) min;No derotation procedure-related injury occured,and the mean estimated blood loss were (132 ±94) ml.Early postoperative ileus developed in one case and gastroparesis in two cases.All were recovered by conservative treatment.The follow-up period were 3-24 month,tumor recurrence occurred in two cases and one case died.One case lossed to follow-up after postoperative 3 month.Conclusion The present data suggest that clinical use of intestinal derotation maneuver was feasible for surgical management of gastrointestinal neoplasms near the ligament of Treitz.

Objective:To analysis the clinical characteristics of The clinical characteristics of using automated external defibrillation in the public place,To explore the feasibility and effectiveness of AED application in public places in China.Methods:From January 2014 to April 5, 2019, 54 cases of on-site emergency medical records of AED use in public places in China were analyzed retrospectively from three aspects: patient and AED user attributes, and AED clinical performance.Results:After field application of AED analysis, 54 patients did not have out of hospital cardiac arrest in 9 patients; cardiac arrest in 45 patients, cerebral resuscitation in 40 patients (88.9%), death in 5 patients (11.1%), one of them died in hospital. The accuracy of AED for defibrillation rhythm recognition and defibrillation recommendations was 100%. The success rate of shock to VF was 97.22%, and that of non pulse VT was 100%. The data shows that AEDs of different brands show clinical effectiveness in the core indicators of work. The operation level of the rescuer determines the critical time of AED shock, which is closely related to the prognosis of the patient ( P<0.05) . Conclusions:AED is reliable and effective in electric shock decision and performance.The overall efficiency of AED application can be improved by strengthening training, shortening the critical time of electric shock, rational configuration and effective management.

BACKGROUND:Bone defects can directly affect the success rate and long-term stability of dental implants.Studies have shown that salidroside has the ability to promote the proliferation and differentiation of osteoblasts,but less is reported on its pathways related to osteogenic differentiation. OBJECTIVE:To investigate the effects of salidroside on the proliferation and differentiation of MC3T3-E1 cells and the expression of related genes and proteins through in vitro cell experiments. METHODS:Cell counting kit-8 test and alkaline phosphatase test were used to determine the optimal concentration of salidroside(0.5,1,5,10,and 50 μmol/L)in promoting the proliferation and differentiation of MC3T3-E1 cells.There were four groups in the experiment:control group,salidroside group,salidroside+LY294002 group,and LY294002 group,which were cultured with osteogenic induction solution,osteogenic induction solution containing 10 μmol/L salidroside,osteogenic induction solution containing 10 μmol/L salidroside+10 μmol/L LY294002,and osteogenic induction solution containing 10 μmol/L LY294002,respectively.The effects of salidroside and LY294002,an inhibitor of the PI3K/Akt signaling pathway,on the expressions of genes and proteins related to osteogenesis were observed. RESULTS AND CONCLUSION:Cell counting kit-8 assay and alkaline phosphatase assay showed that salidroside promoted the proliferation of MC3T3-E1 cells most significantly at 10 μmol/L.Compared with the control group,salidroside could promote mineralization,promote cell adhesion,reduce cell death,increase mRNA expression of Runx-2,osteocalcin and osteopontin(P<0.01),and increase protein expression of Runx-2 and p-Akt(P<0.01).However,the addition of LY294002 reversed the above results.These findings indicate that salidroside can promote the mineralization of MC3T3-E1 cells and the expression of osteogenesis-related genes and proteins,which may be related to the activation of PI3K/Akt signaling pathway.

As a key part of the emergency medical system, pre-hospital emergency service proves critical for critical care, higher pre-hospital care success rate, improvement of patient outcome, and promotion of health recovery. This paper analyzed the status quo of pre-hospital emergency services information, discussed the application of information technology in pre-hospital industries including command and dispatch system, ambulance real-time positioning and tracking system, pre-hospital emergency video surveillance system, medical record system, electronic patient health file system, electronic payment system, and data mining and analysis system.Furthermore, it also discussed the prospect of sizably upgrading pre-hospital emergency service and building intelligent pre-hospital emergency coordination system.