Objective To explore the effects of strength training on aging muscular atrophy and inflammatory factors levels in old men.Methods 11 old men participated in 12 weeks of strength training. Muscle strength/muscle thickness and serum levels of tumor necrosis factor (TNF)-α, interleukin (IL)-6, high sensitivity C-reactive protein (hsCRP) and adiponectin were measured before and after training. Results After training, the muscle thickness increased, but there was no significantly difference (P>0.05); the levels of hsCRP decreased (P<0.001) and adiponectin increased (P<0.05). Conclusion Strength training may assist in maintaining or improving muscle strength/muscle mass and reducing inflammatory factors levels.

Objective To investigate the effect of interleukin-17 (IL-17) in the gastric cancer cell migration and invasion via regulating epithelial-mesenchymal transition (EMT) and its potential function.Methods (1) Human gastric cancer cell MGC-803 lines in the logarithmic growth phase were stimulated by 0, 1 ng/mL, 10 ng/mL,100 ng/mL and 1μg/mL of IL-17 for 48 hours, and the phenotypic changes were observed.The concentration of IL-17 was selected for follow-on experiments based on the most obvious phenotypic changes.Gastric cancer cell MGC-803 which were stimulated by 100 ng/mL of IL-17 and PBS for 48 hours were allocated into the experimental group and control group, respectively.(2) The expressions of E-cadherin and Vimentin mRNA in gastric cancer cells were assayed through real-time PCR (RT-PCR).(3) The relative expressions of E-cadherin and Vimentin proteins in gastric cancer cells were assayed by the Western blot.(4) The scratch test and Transwell detection were also utilized to study the migration and invasion of gastric cancer cell MGC-803 in vitro.Measurement data with normal distribution were presented as-x ± s and comparison between groups was analyzed using the t test.Results (1) There were significant phenotypic changes in the gastric cancer cell after the different concentration of IL-17 stimulated gastric cancer cell MGC-803 for 48 hours.Cells were changed from polygonal and tight junction to spindle and loosely junction with a deterioration of cell adhesion.Cell phenotypes were gradually changed as the concentration of IL-17 was changed from 0 to 100 ng/mL.Phenotypic changes were the most obvious when 100 ng/mL of IL-17 was used, but these were non-significant as the concentration of IL-17 increased to 1 μg/mL with the death and floating of some cells.(2) The relative expressions of E-cadherin mRNA and Vimentin mRNA in RT-PCR were 0.45 ±0.13 and 1.06 ±0.23 in the experimental group and 2.39 ±0.55 and 1.23±0.41 in the control group, respectively, with significant differences (t =3.811, 2.923, P ＜0.05).(3) The results of Western blot showed the relative expressions of E-cadherin and Vimentin proteins were 0.86 ± 0.17 and 1.56 ± 0.29 in the experimental group and 1.01 ± 0.12 and 0.56 ± 0.17 in the control group, respectively, with significant differences (t =3.551, 3.601, P ＜ 0.05).(4) Cell migration in the 2 groups were detected by the scratch test at 36 hours after scratch test, and the width of scratch in the experimental and control groups were (0.76 ± 0.13) mm and (0.40 ± 0.15) mm, showing a significant difference (t =3.095, P ＜ 0.05).Transwell detection showed number of transmembrane cell in the experimental and control groups were 159 ±28 and 94 ± 18, respectively, with a significant difference (t =3.307, P ＜ 0.05).Conclusion IL-17 can promote the migration and invasion of gastric cancer cells via stimulating alteration of EMT.

Objective To explore the safety and feasibility of vagus nerve-preserving Da Vinci robotassisted radical gastrectomy for gastric cancer.Methods The retrospective cross-sectional study was conducted.The clinicopathological data of 12 gastric cancer patients who underwent vagus nerve-preserving Da Vinci robotassisted radical gastrectomy at the Southwest Hospital of the Third Military Medical University from January 2015 to November 2016 were collected.All patients underwent vagus nerve-preserving Da Vinci robot-assisted radical gastrectomy for gastric cancer.During operation,lymph node dissection of the pyloric region,the right side of the cardia and the superior margin of the pancreas were noticed,and other surgical procedures were the same as the traditional Da Vinci robot-assisted radical gastrectomy.Observation indicators:(1) intra-and post-operative situations:surgical methods,digestive tract reconstruction,operation time,volume of intraoperative blood loss,number of lymph node dissected,results of postoperative pathological examination,recovery time of gastrointestinal function,time for liquid diet intake,duration of postoperative hospital stay,short-term surgery-related complications (postoperative bleeding,anastomotic fistula,obstruction and intra-abdominal infection);(2)follow-up situations:postoperative long-term complications (gastric retention,alkaline reflux gastritis,dumping syndrome,gallbladder disease and cholelithiasis),postoperative quality of life (diet,upper abdominal discomfort,nausea,vomiting and diarrhea),postoperative nutritional status [body weight,hemoglobin (Hb),total protein (TP),albumin (Alb)] and tumor recurrence.Follow-up using telephone interview and outpatient examination was performed up to December 2016.Telephone interview included detecting diet of patients,digestive tract symptoms and body weight.Routine blood test,liver and kidney functions,tumor markers,chest X-ray,abdominal computed tomography (CT) or color Doppler ultrasound and gastroscopy of outpatient examinations were performed to detect tumor recurrence and metastasis.Measurement data with normal distribution were represented as x±s and measurement data with skewed distribution were described as M (range).Results (1) Intra-and post-operative situations:all the 12 patients underwent successful vagus nerve-preserving Da Vinci robot-assisted radical gastrectomy for gastric cancer,without conversion to laparoscopic surgery or open surgery,including 2 patients with D1 lymphadenectomy,2 patients with extended D1 lymphadenectomy and 8 patients with D2 lymphadenectomy.Five and 7 patients underwent respectively Billroth Ⅰ anastomosis and Billroth Ⅱ anastomosis of digestive tract reconstruction.Operation time,volume of intraoperative blood loss and number of lymph node dissected of 12 patients were (247± 34) minutes,(94 ± 23) mL and 27 ± 7,respectively.Results of postoperative pathological examination showed that distal and proximal surgical margins of 12 patients were negative and achieved R0 resection;326 lymph nodes were dissected,6 patients didn't have lymph node metastasis and 18 positive lymph nodes were detected in 6 patients.Recovery time of gastrointestinal function,time for liquid diet intake and duration of postoperative hospital stay in 12 patients were (57±14)hours,(64± 14)hours and (7.3±0.9)days,respectively.There was no occurrence of short-term surgery-related complications.(2) Follow-up situations:12 patients were followed up by telephone interview (10 receiving outpatient exaninations) for 9 months (range,1-20 months).Of 12 patients with long-term complications,2 had loss of appetite,1 had diarrhea,without occurrence of cholelithiasis,cholecystitis,gastric retention and dumping syndrome.Of 10 patients receiving outpatient examinations,body weight,Hb,TP and Alb were (56± 12) kg,(126± 10) g/L,(69.9±5.1) g/L,(43.2±3.3)g/L at 1 month postoperatively and (52±13)kg,(126±10)g/L,(72.1±2.4)g/L,(45.2±1.6)g/L at 3 months postoperatively,respectively,with negative carcinoembryonic antigen.There was no tumor recurrence and metastasis in 12 patients.Conclusion Vagus nerve-preserving Da Vinci robot-assisted radical gastrectomy is safe and feasible for gastric cancer,which has not affected the lymph node dissection and incidence of surgeryrelated complications,and it also can improve the postoperative quality of life and maintain good nutritional status.

Objective: To learn the characteristics of varicella breakthrough cases aged under 14 years in Haizhu District, Guangzhou City and the effects of vaccination on incidence of breakthrough cases, so as to provide the basis for improving varicella vaccination strategy. Methods: Data of varicella cases aged under 14 years and vaccination in Haizhu District were collected through Chinese Disease Prevention and Control Information System and Guangdong Provincial Vaccination and Vaccine Circulation Management Information System from 2015 to 2022. Temporal distribution, population distribution and vaccination history of varicella breakthrough cases were descriptively analyzed. Effects of primary immunization age and inoculation interval on breakthrough interval were analyzed using least square method fitting bi-cubic functional equation. Results: A total of 4 008 varicella breakthrough cases aged under 14 years were reported in Haizhu District from 2015 to 2022, accounting for 29.16% of all varicella cases. There were mainly 1-dose breakthrough cases, with 3 607 cases accounting for 90.00%. The proportion of 1-dose breakthrough cases showed a downward trend, while the proportion of 2-dose breakthrough cases showed an upward trend (both P<0.05). The epidemics peaked from March to May and from November to January, with a male-to-female ratio of 1.41︰1. The age of onset was mainly at 4 to 6 years, with 1 189 cases accounting for 29.67%. The primary immunization age was mainly ranged from 12 to <24 months, with 2 662 cases accounting for 66.42%. Vaccination of the second dose was concentrated at the age of 48 to <60 months, with 136 cases accounting for 33.92%. The breakthrough interval was relatively long among cases with primary immunization age at 12 to <36 months and inoculation interval within 45 months, with a median breakthrough interval of 25.24 (interquartile range, 20.00) months. Primary immunization age and inoculation interval were negatively correlated with breakthrough interval (P<0.05). Conclusions The varicella breakthrough cases aged under 14 years in Haizhu District from 2015 to 2022 were mainly occurred at the beginning of the new term, with a high incidence among preschool children. It is recommended that children receive the first dose of varicella vaccine within 36 months of age and booster within 45 months of interval.

Objective To investigate the production of carbapenemase and 16S rRNA methylase in five isolates of pan-drugs resistant E.cloacae recovered in Ruijin hospital.Methods MICs of the five isolates to 10 antibiotics were determined by E test.Six kinds of 16S rRNA methylase genes and a series of β- lactamase genes were amplified by PCR.Shotgun cloning was performed to detect carbapenem resistance determinant.The conjugal transfer of carbapenemase gene and 16S rRNA methylase gene was performed in broth culture with E.coli J53 as the recipient.Pulsed-field gel electrophoresis (PFGE) was carried out to analyse the genotyping.IEF was performed to detect β-1actamases.Southern blot was performed to determine the location of carbapenem resistance determinant.Results The MICs of 10 antibiotics were ＞32 mg/L.Four β-1actamases with pIs of 5.4 ( TEM-1 ),6.7 ( KPC-2 ),8.2 ( SHV-12 ),8.4 (CTX-M-14) were determined.The insertion sequence in the recombinant plasmid was blaKPC-2 flanked by a transposon.blaKPC-2 was located on a large non-conjugative plasmid whereas armA was located on an other conjugative plasmid.PFGE patterns of 5 isolates were identical.Conclusion KPC-2 was responsible for carbapenem resistance in pandrugs resistant Enterobacter cloacae.There was no relationship between blaKPC-2 and armA.Although pandrug resistant Enterobacteriaceae remain rare,the emergence of this group of organism merits monitoring.

Objective To investigate antibiotic resistance and molecular epidemiology profile of methicillin-resistant Staphylococcus aureus (MRSA) in Shanghai. Methods The antibiograms of 140 MRSA isolates from 5 hospitals for 13 drugs were analyzed by agar dilution and broth dilution. The PVL gene and SCCmec were detected by PCR; The clonal relatedness of 140 isolates were determined by PFGE and 39 strains were chosen to be characterized further by spa typing. Results All 140 MRSA are PVL negative and most of them were identified as SCCmec Ⅲ [45.7% (64/140)], followed by SCCmec Ⅲ a [25.0% (35/140)], SCCmecⅢb [14.3% (20/140)], SCCmecⅡ [10.7% (15/140)] and SCCmecⅣ [4.3% (6/140)]. All isolates were susceptible to vancomycin, teicoplanin and daptomycin. The resistance to gentamicin, sulphamethoxazole and clindamycin was 98. 6% (138/140), 98. 6% (137/140) and 97. 9% (137/140), respectively. Resistance to erythromycin, ciprofloxacin and tetracycline was above 80%, and resistance to rifampicin was 10. 7% (15/140). Sixteen different PFGE patterns(A-P) were found and most of MRSA belonged to group C[30. 7% (43/140)] ,B[13.6% (19/140)]and Ⅰ [10. 7% (15/140)]. Among 39 strains with prevalent PFGE patterns, 4 spa genotypes were identified: t002133. 33% (13/39)] ,t030 [12. 82% (5/39)] ,t037[51.28% (20/39)]and t459[2. 57% (1/39)]. Conclusions Sixteen different PFGE patterns and 4 spa genotypos were found from 5 hospitals in Shanghai. The most popular MRSA clone is PVL negative, SCCmec Ⅲ, with resistant profile of erythromycin, ciprofloxacin,clindamycin,etracycline, gentamicin,and sulphamethoxazole [E-C-L-T-G-M-]. This result suggests that hospital infection control and reasonable antibiotic usage are critical.

Objective To determine the genetic background and evolutional route of macrolideresistance Streptococcus pneumoniae(MRSP)strains in Shanghai.Methods Forty-seven MRSP clinical isolates were genotyped by pulse field gel electrophoresis(PFGE)to detect the donal relationship of therm.Serotyping and muhilocus sequence typing(MIST)on 6 multi-resistant strains wag used to investigate the evolutional relationship between serum types and international epidemic strain among MRSP strains in Shanghai.Results There were 2 epidemical clones(type A 45%,type B 17%)in MRSP clinical isolates containing both the ermB and the mefE genes in Shanghai.MIST analysis showed that all 6 multi-resistant strains whose PFGE pattern was A type belonging to Asia clonal complex-CC236(Taiwan19F-14 clone).There was a novel ST-ST2116,which might derived from CC236 due to the recombination with alldic change.Conclusion,The high prevalence of erythromycin-resistant Streptococcus pneumoniae containing both the ermB and the mere genes in Shanghai is partly due to the clonal spread of a few mtdtidrng-resistant clones.

Objective Non-traumatic and posteromedial subchondral osteonecrosis of trochlea tali (NTPSOTT) is a special type of necrosis of the talus , for which early diagnosis and treatment are particularly important .This study investigated the clinical ef-fectiveness of autogeneic cancellous bone transplantation in the treatment of NTPSOTT . Methods We retrospectively analyzed 21 cases of NTPSOTT treated by autogeneic cancellous bone transplantation and evaluated using the Clinical Rating System of the American Orthopedic Foot and Ankle Society ( AOFAS) , Visual Analogue Scale ( VAS) , and X-ray and CT examinations . Results The pa-tients were followed up for 12-26 months and all healed desirably , with the graft well integrated into the surrounding tissue , but no as-similation, collapse of the articular surface , or narrowing of the joint space .The last follow-up visit revealed significantly improved AOFAS score (90.55 ±6.73 vs 50.87 ±11.42, P=0.009) and VAS score (1.32 ±0.81 vs 6.43 ±1.66, P=0.027) as compared with the baseline . Conclusion Autogeneic cancellous bone transplantation is preferable for the treatment of NTPSOTT , which can effectively reduce the pain in the ankle , maintain the joint space , and protect the function of the ankle .

Objective To evaluate the application effect of pneumatic arm assisted single surgeon uniportal thoracoscopic surgery.Methods A total of 40 patients were admitted to our treatment group in Shanghai Pulmonary hospital in October who accepted pneumatic arm assisted single surgeon uniportal thoracoscopic surgery.All the clinic statistics of patients were collected including operative time,the volume of blood intra-operation,postoperative complications and hospitalization time.23 of 40 patients who accepted lobectomy/segmentectomy with pneumatic arm assisted single surgeon uniportal thoracoscopic surgery were assigned to the observation group,while another 30 concurrent patients who accepted lobectomy/segrnentectomy with conventional uniportal thoracoscopic surgery were assigned to the control group.Both groups were compared.Results The average postoperative hospitalization time of observation group was(4.6 ± 1.3) days.The average time for postoperative drainage tube retention was(46.7 ± 18.6) hours.The average operation time of patients in observation and control groups was(121.74 ± 25.16) min and (119.7 ± 14.26) min separately.The volume of blood intra-operation in observation group was(91.74 ± 32.88)ml and(89.00 ± 41.22) ml in control group.There is no significant difference between two groups(P ＞ 0.05).Conclusion The field of view and adjustment of camera in uniportal thoracoscopic surgery by single surgeon with pneumatic arm assistance are more accurate and steady,in which human resource can be saved.It is safe and reliable and does not prolong operative time or increase bleeding during operation,and can be applied to different kinds of diseases in thoracic surgery.It is worth promotion and application in eligible hospitals and medical institutions.

Objective To evaluate the refinement process for extracting Herba Artemisiae Scopariae(HAS) with macroporous resin.Methods With reservation rate of main peak in the fingerprint as the index,the refinement process for extract of HAS was evaluated.The safety of oral administration of HAS extract before and after refinement process was evaluated by detecting serum levels of alanine aminotransferase(ALT) and aspartate aminotransferase(AST),observing the hepatic histopathological changes in mice model of CCl4-induced acute hepatic injury,and by mice acute toxicity experiment.Results The fingerprint of HAS extract before and after treatment was similar,the difference of their hepatoprotective effect was insignificant,and there was no obvious acute toxic reaction of HAS extract before and after refinement.Conclusion This experiment verified the rationality of the refinement process for extracting Herba Artemisiae Scopariae with macroporous resin by the method of pharmacodynamics combining with HPLC fingerprint.