Objective To investigate the clinical effect of laparoscopic cholecystectomy in prevention of bile duct injury during operation.Methods From December 2014 to December 2015,39 cases of laparoscopic cholecystectomy were selected as the control group.From January 2016 to January 2017,26 patients with acute cholecystitis were selected as the observation group.The two groups were treated with gallbladder excision operation.The causes of bile duct injury in control group were analyzed and developed targeted preventive measures.and the preventive measures were implemented in the observation group.The incidence of bile duct injury,hospitalization time,operation time were observed in the two groups.Results The observation group had no bile duct injury,the incidence rate of bile duct injury in the control group was 7.69%,the difference between the two groups was significant(x2=3.90,P<0.05).The operation time,hospitalization time of the observation group were(68.91±3.44)min,(4.65±1.66)d,which were less than those of the control group(t=9.59,2.03,all P<0.05).Conclusion For patients with laparoscopic cholecystectomy,the implementation of effective measures have better effect in prevention of bile duct injury.

Objective To study the efficacy of the electrolyzed oxidizing water (EOW) in the oral irrigation of patients with oral trachea cannula. Methods 60 patients with oral trachea cannula were ran-domly divided into the experimental group and the control group, the experimental group received oral irri-gation with EOW,while the control group used normal saline. The oral irrigation efficacy was compared be-tween the two groups. Results In the experimental group,the bacterial clearance rate was 95.21% ,while the control one's was 37.19%, the stomatodysodia rate of the experimental group was 3.33%, the control one's was 86.60%, the oral fungus infection rate of the experimental group was 0% , the control one's was 43.33%, the incidence of dental ulcer of the experimental group was 10.00%, the control one's was 3.33%. Significant difference existed in bacterial clearance rate and the stomatedysodia rate between the two groups. Conclusions Oral irrigation with EOW in oral trachea cannula patients can decrease or con-trol the field planting of bacterium in pharynx oralis and stomatodysodia, and prevent pulmonary infection.

Objective To establish an in-vitro root canal-apical complex model for studying the mechanisms of the infected root canal to apical periodontitis and periapical biofilm .Methods Single rooted premolar extracted for orthodontic ,was sealed in sterile vial containing LB solid medium ,and the culture medium covered apical thirds .Totally 25 root canal-apical complex models were prepared .Five models were randomly selected for the bacteria detection in periapical by PCR at 1st day .The remained 20 models were randomly subjected to a control group(n=10) and experimental group(n=10) .Extracted teeth were opened in experimental group and control group with no treatment .All models were exposed in air .At 21st day ,bacteria were detected through PCR in root canal and apical;endotoxin content in apical was assayed by chromogenic end-point limulus test .Results In apical ,bacteria was not found in all groups ,but not for the experimental group .The mean endotoxin content was (8 .913 ± 0 .614)EU/mL in control group and (10 .525 ± 0 .981)EU/mL in experimental group .The endotoxin content was increased significantly in experimental group ,when compared with control group(P<0 .01) .Conclusion Root canal-apical complex was established in vitro through this method .Bac-teria was not easy to reach the apical when the infected root canal was not disturbed .Bacteria in the infected root canal caused apical periodontitis through the secretion of virulence factors such as endotoxin .

It is a consensus to place stent after cutting bile duct in the hepatobiliary surgery in the past.However,as the development of bile physiological research and surgical technique,especially the raise of medical concepts of rapid recovery,the negative effects which are caused by the placement of stent have been taken seriously gradually.Up to now,whether the stent should be placed after the bile duct is cut has no definite answer yet.

Consciousness of medical ethics standards refers to medical staff's understanding and approval to the content,value and significance of medical ethics standards,as well as the sense of responsibility to implement revelant standards.The professional characteristics,practical problems in hospital work,the present weak consciousness of behavioral standards among university students,and the ineffectual education of medical ethics all have led to an important and urgent need to strengthen the consciousness of medical ethics standards.We should stimulate students' interest of studying medical ethics,train humanity quality among medical students,and apply an educational method with a developing view.

Congenital disorders of glycosylation(CDG) are a rapidly growing group of genetic diseases that are due to defects in the synthesis of glycans and in the attachment of glycans to other compounds. Most CDG are multisystemic diseases often involving severe psychomotor retardation. The CDG causing sialic acid deficiency of N-glycans can be diagnosed by isoelectric focusing of serum transferrin. Glycan structural analysis, yeast genetics and knockout animal models are essential tools in the elucidation of novel CDG. In this review, we focus on the current knowledge of the pathogenesis and identification of nine primary glycosylation diseases.

The root canal system of mandibular second molar is complex.This article presents one case with type 1-2 mesial root canal of mandibular second molar.The canal was treated by warm gutta percha,and conformed by X-ray examination and dental operating microscopy.

There are many superiorities of multimedia in the practice of dermatovenerology teaching and also some disadvantages.And some improvement measures are also suggested.

Objective To study the effect of Xiaoaiping injection on Caov-3 human ovarian cancer cells and its mechanisms. Methods After treatment with Xiaoaiping injection, viability of Caov-3 cells determined by MTT method. Phase contrast microscopy was used to observed the morphological changes of Caov-3 cells. Cell cycle was assessed by FACS. Cell signaling pathway protein-Akt and pAkt, and cell cycle associated protein-p27 were measured by western blot. Results Xiaoaiping injection inhibited the growth of Caov-3 human ovarian cancer cells in a dose and time dependent manner. Xiaoaiping injection induced G0/G1 phase arrest of Caov-3 cells, accompanied by pAkt down-regulation and p27 up-regulation. Conclusion Xiaoaiping injection can inhibit the proliferation of Caov-3 human ovarian cancer cells by inhibiting PI3K/Akt signaling pathway.