0.05). Conclusion The oral sodium phosphate preparation is superior to magnesium sulfate before colorectal surgery. Single-day preoperative bowel preparation with oral sodium phosphate is suitable for elective colorectal surgery.

Objective To study transmission characteristics of Acinetobacter baumannii (A.baumannii )clone and clinical features of infected patients in a respiratory intensive care unit (RICU),so as to guide the effective pre-vention and control of A.baumannii transmission.Methods 40 A.baumannii strains isolated from RICU patients were performed homology analysis by pulsed-field gel electrophoresis (PFGE)and cluster analysis,relationship of strains was determined,antimicrobial resistance and clinical data were analyzed.Results 40 A.baumannii strains were divided into 11 genotypes(A-K),the main epidemic strains were type A,B and E.The resistant rate to imipen-em was the lowest(70.00%),the next was levofloxacin (77.50%).The average age of 40 infected patients was 67 years old,the average length of hospital stay was 41 days,12 patients died because of invalid treatment.There was overlapping hospitalization among patients infected with type A and E strains;among patients infected with type B strain,there was no overlapping hospitalization among the last 6 and first 6 infected patients.Conclusion The main epidemic strains of A.baumannii were type A,B and E,antimicrobial resistant rate is high;the infected patients are with high average age and long length of hospital stay.It is important to reduce the transmission of A.baumannii through rational use of antimicrobial agents,strict aseptic operation,and intensified disinfection and sterilization of hospital environment and medical devices.

Objective To investigate the effects of different doses of dexmedetomidine on cerebral oxygen saturation and pulmonary shunt fraction in patients undergoing one-lung ventilation (OLV). Methods Sixty ASAⅠ-Ⅱpatients, aged 46-71 years, with body mass index (BMI)18-24 kg/m2 and scheduled for thoracotomy were randomly divided into three groups (n=20 each):high dose dexmedetomidine group (group D1), low dose dexmedetomidine group (group D2) and control group (group C). Dexmedetomidine 1μg/kg was infused in group D1 after anesthesia induction, and then a rate of 0.5μg·kg-1·h-1 was continuously infused. Dexmedetomidine 0.5μg/kg was infused in group D2 after anesthesia induction, and then a rate of 0.3μg · kg-1 · h-1 was continuously infused. Group C was received the equal volume of normal saline. Anesthesia was main?tained with propofol-remifentanil and intermittent iv boluses of rocuronium. Arterial and jugular venous blood samples were collected before anesthesia induction (T0), at 15 min after two-lung ventilation (T1), at 5 min (T2) and 30 min (T3) of OLV for blood gas analysis. Value of Qs/Qt was calculated and SctO2 was recorded at the same time. Results Compared with group C and group D2, Qs/Qt was decreased at T2 in group D1 (P<0.05). Qs/Qt was lower at T3 in group D1 and D2 than that of group C, and which was lower in group D1 than that of group D2 (P<0.05). In group C and group D1 a significant de?crease in SctO2 was observed at T2 and T3 compared to that at T0 and T1 (P<0.05). SctO2 was significantly higher at T2 and T3 in group D2 than that in group C and group D1 (P<0.05). Conclusion Dexmedetomidine given during OLV undergoing thoracotomy can improve oxygenation, decrease pulmonary shunt fraction and reduce the occurrence of low SctO2.

Objective To determinted whether GM1 had a protective effect on injury induced by serum-deprivation and the possible mechanism in PC12 cells. Methods The viability of PC12 cells was quantified by MTT after serum-deprivation.The number of apoptotic cells and necrotic cells were determined by Hoechst 33258/PI staining.And the change of PKC protein expression on PC12 cells' membrane and cytosols was detected by Western blotting. Results 1.The viability of PC12 cells decreased after serum-deprivation and the serum-deprivation for 24 hours was chosen as an injury model in this research.Most of the PC12 cells presented apoptosis 24 hours after serum-deprivation.In addition,the PC12 cells' cytosols PKC protein decreased,while the PC12 cells' membrane PKC protein increased significantly,and this result suggested PKC's translocation to membrane and its activation.2.The viability of PC12 cells preincubated with GM1 in high concentrations(10,1,0.1?mol/L) increased significantly and GM1 protected PC12 cells from apoptosis after serum-deprived injury.GM1 reduced the damage of serum-deprivation on PC12 cells and inhibited PKC protein translocation after injury.3.The repair function of GM1 was effective to neuronal resume after serum-deprived injury.Conclusion Neuroprotective effects of GM1 on serum-deprived injury may be partly mediated through the regulation of PKC pathways and it is helpful for the recovery after injury.

Objective To evaluate the effect of dexmedetomidine on necroptosis during liver injury in septic rats.Methods Eighteen SPF adult male Sprague-Dawley rats,weighing 200-220 g,were divided into 3 groups (n=6 each) using a random number table:sham operation group (group SH),sepsis group (group SEP) and dexmedetomidine group (group DEX).Sepsis was induced by cecal ligation and puncture in chloral hydrate-anesthetized rats in SEP and DEX groups.Dexmedetomidine 5 μg/kg was injected via the caudal vein at 1 h before operation in group DEX.Blood samples were collected from the caudal vein at 6 h after operation for determination of serum aspartate amino-transferase (AST) and alanine aminotransferase (ALT) concentrations.The rats were then sacrificed and livers were removed for determination of the level of reactive oxygen species (ROS) in liver tissues (using chemiluminescence assay) and expression of receptor-interacting protein 1 (RIP1),RIP3,mixed lineage kinase domain-like (MLKL),high-mobility group box 1 protein (HMGB1) and dynamin-related protein 1 (Drpl) in liver tissues (by Western blot).Results Compared with group SH,the serum AST and ALT concentrations were significantly increased,the expression of RIP1,RIP3,MLKL,HMGB1 and Drpl in liver tissues was up-regulated,and the level of ROS in liver tissues was increased in SEP and DEX groups (P＜0.05).Compared with group SEP,the serum AST and ALT concentrations were significantly decreased,the expression of RIP1,RIP3,MLKL,HMGB1 and Drp1 in liver tissues was down-regulated,and the level of ROS in liver tissues was decreased in group DEX (P＜0.05).Conclusion The mechanism by which dexmedetomidine attenuates liver injury may be related to inhibition of necroptosis in septic rats.

Objective To establish a cosmetic medicine bio-psycho-social model and its theory frame and a new clinical work system. Methods The clinical observation and clustering analysis were used in this study, which based on the modern medicine patterns to carry on the logical proof, theory derivation and systematic design. Results The bio-psycho-social model of cosmetic me dicine with combination of the theory and practice was established, including its concept, theory constitution and clinical work system. Conclusion The bio-psycho-social model of cosmetic medicine can most scientifically and comprehensively explain this discipline rule and clinical work, and it will bring the profound influence on the development of the theory and practice in cosmetic medicine.

Objective To study the anatomic data of the first metatarsal dorsal artery and to provide anatomical basis for clinical tissue transplantation based on the first metatarsal dorsal artery.Methods The 16 adult cadaver specimens with 32 feet were dissected and meas-ured by vernier caliper.Then the anatomic data of the first metatarsal dorsal artery were analyzed.Results Through the examinations of 32 feet sample,the first metatarsal dorsal artery were classified into 5 types.Type Ⅰ:the first metatarsal dorsal artery runs at the surface of the first dorsal interosseous muscle (13 sides,40.6%).Type Ⅱ:the first metatarsal dorsal artery runs in the interior of the first dorsal interosse-ous muscle (11sides,34.4%).Type Ⅲ:the first metatarsal dorsal artery runs underneath the first dorsal interosseous muscle (6 sides, 18.8%).Type Ⅳ:the first metatarsal dorsal artery is slender (1 side,3.1%).TypeⅤ:the first metatarsal dorsal artery is absent (1 side, 3.1%).Distance relationship was measured between the first metatarsal bone and the first metatarsal dorsal artery:the vertical distance be-tween the origin of the posterior branch of the first metatarsal dorsal artery and base of the first metatarsal bone was (2.4 ±0.3)mm,the ver-tical distance between the origin of the posterior branch of the first metatarsal dorsal artery and head of the first metatarsal bone was (10.1 ±1.0)mm;the vertical distance between the origin of the anterior branch of the first metatarsal dorsal artery and the first metatarso-phalangeal joint was (7.6 ±2.7)mm.Conclusion The first metatarsal dorsal artery has clinical reference significance for the hands and feet’s trauma and skin flap transplantation such as thumb reconstruction.

Objective To study the cell vitality and ultra-structure of in vitro cultured fetus chondrocytes exposed to different doses of fluoride.Methods Primary chondrocytes were obtained from articular cartilage of the 24-27 weeks,aborted and dead fetuses.The third generation of primary cultured chondmcytes were exposed to concentrations of 0,10-2,5 × 10-3,10-3,10-4,10-5,10-6,10-7 and 10-8 mol/L fluoride for 24,48 and 72 h.Cell vitality was detected with Cell Counting Kit-8 (CCK-8) and ultra-structure of chondrocytes was observed by transmission electron microscope.Results The cell vitalities of chondrocytes exposed to doses of fluoride (10-2,5 ×10-3,10-3,10-4,10-5,10-6,10-7 and 10-8 moL/L) for 24,48 and 72 h were(15.04 ± 0.55)％,(62.53 ± 1.03)％,(100.34 ± 5.19)％,(111.40 ± 3.69)％,(121.47 + 6.09)％,(129.95 ± 4.96)％,(121.81 ± 4.97)％,(111.00 ± 1.63)％;(10.35 ± 0.64)％,(35.23 ± 2.41)％,(110.30 ± 2.07)％,(113.66 ± 6.98)％,(120.36 ± 6.23)％,(133.40 ± 5.80)％,(126.06 ± 5.40)％,(115.62 ± 7.33)％; (6.19 ± 0.16)％,(18.44 ± 0.21)％,(120.83 ± 4.93)％,(123.77 ± 4.82)％,(129.09 ± 5.21)％,(140.44 + 4.18)％,(131.99 ± 7.00)％,(124.10 ± 3.68)％,respectively.The cell vitalities of 10-2,5 × 10-3 mol/L fluoride groups were significantly lower than that of the control group (all P ＜ 0.05).The cell vitality of 10-2 mol/L group was significantly lower than that of the 5 × 10-3 mol/L group (P ＜ 0.05).Doses of fluoride (10-2,5 × 10-3 mol/L) could inhibit the cell vitality and promote the apoptosis of chondrocytes in vitro with increasing doses and prolonged time.The cell vitalities of 10-3,10-4,10-5,10-6,10-7,10-8 mol/L of fluoride groups were significantly higher than that of the control group (except the 24 h 10-3 mol/L,P ＜ 0.05).Between 10-4 and 10-3 mol/L groups(the vitalities of 48 h and 72 h were higher,but not significantly); 10-5 and 10-4 mol/L groups (the vitality of 72 h was higher,but not significantly); 10-6 and 10-5 mol/L groups,the cell vitalities were significantly higher than that of the control group(all P ＜ 0.05).Between 10-7 and 10-6 mol/L groups,10-8 and 10-7 mol/L groups (the vitality of 72 h was lower,but not significantly),the cell vitalities were significantly lower than that of the control group(all P ＜ 0.05).Doses of fluoride(10-3-10-8 mol/L) could promote the cell vitality of chondrocytes in vitro with prolonged time.The optimal concentration for the promotion was 10-6 mol/L.The cells of the control group were characterized as regular morphology,the abnormal surface microvillis,abundant cytoplasm and mitochondrial,abundant and slightly expanded rough endoplasmic reticulums and low electron-dense materials.The cells of 10-6 mol/L fluoride group had the following changes,increased and swell mitochondrial,hypertrophy and expanded rough endoplasmic reticulums.The cells of 5 × 10-3 mol/L fluoride group had the following changes,decreased microvillis,invaginated cell membrane,pyknosis and apoptotic body.Conclusion Doses of fluoride (10-3-10-8 mol/L) can promote the proliferation of human chondrocytes cultured in vitro.Doses of fluoride (10-2,5 × 10-3 mol/L) can promote the apoptosis of human chondrocytes cultured in vitro.

Objective To investigate the intermediary and regulating effect of self?esteem on per?ceived stress and training burnout among accelerated plateau soldiers. Methods A total of 700 accelerated plateau soldiers were investigated which were chosen by a random cluster sampling method,and assessed by the Perceived Stress Scale, Self?esteem Scale and Self?compiled Soldiers' Training Burnout Questionnaire. Results ( 1) The total score of training burnout,the score of physical and mental exhaustion and the score of training alienated among soldiers who had a history of training injury (27.85±5.80,14.89±3.46 and 6.89± 2.26,respectively) were significantly higher than those of soldiers who didn't have a history of training injury (25.05±5.12,12.68±3.25 and 6.16±2.78,respectively),and the differences were significant ( t= 4.321, 5.764,2.825,all P<0.01). The total score of training burnout,the score of physical and mental exhaustion and the score of training alienated among soldiers who had a high training expectation were higher than those of soldiers who didn't have a high training expectation,and the differences were significant (P<0.01). (2) Among accelerated plateau soldiers,training burnout showed significantly positive correlation with perceived stress ( r=0.323, P<0.01),and significantly negative correlation with self?esteem ( r=-0.409, P<0.01). (3) The intermediary role of self?esteem between perceived stress and training burnout was remarkable (P<0.01) ,which accounted for 33.8% of the total effect,and self?esteem also had a regulating effect (P<0.05) . Conclusion Radical plateau soldiers have remarkable differences due to the history of training injury or training expectations,and self?esteem has partial intermediary and regulating effect between perceived stress and training burnout.

Objective To analyze the relationship between knowledge on cardiovascular disease prevention and ideal cardiovascular health behaviors and factors in community elderly. Methods From December, 2015 to May, 2016, totally 400 elderly in communities with-out overt cardiovascular disease were conveniently sampled. The level of knowledge on cardiovascular disease prevention was measured by self-designed cardiovascular disease prevention questionnaire. And each of the ideal cardiovascular health components was collected. Re-sults A total of 390 responses were valid. 13.85%community elderly were with high level of the knowledge. There were significant differ-ences in the distribution of cardiovascular health indexes among various leves of the knowledge groups (χ2>9.974, P<0.05), except choles-terol (P>0.05). The level of the knowledge was positively correlated with the scores of cardiovascular health behaviors and health factors (r>0.354, P<0.01). The cardiovascular health score, health behaviors score, health factors score and number of ideal cardiovascular health in-dexes were significantly different among various levels of the knowledge groups (F>8.961, P<0.001). Conclusion The level of knowledge on cardiovascular disease prevention was positively correlated with cardiovascular health behavior and health factors. The scores of cardio-vascular health score, health behaviors score and health factors increased with the improvement of knowledge on cardiovascular disease pre-vention.