Objective To explore the objectivity and scientificity of fecal sampling , and to provide reference for investigating the relationship between intestinal microbes and diseases . Methods Terminal restriction fragment length polymorphism, degeneration gradient gel electrophoresis and real time fluorescent quantitative PCR techniques were applied to differentially analyze the bacterial community composition and abundance of intestinal contents and feces taken from dif -ferent sites of BALB/c mouse intestine .Results The predominant T-RFLP fragments ( T-RFs) in feces in the rectum and colon were 244 bp, 255 bp and 449 bp, however , those in feces of the small intestine including duodenum , jejunum and il-eum were 60 bp, 73 bp, 261 bp, 268 bp and 272 bp, and with a larger variation of the bacterial community composition in various parts of the small intestine .The bacterial abundance in the contents of duodenum and jejunum were 6.9 log ( cop-ies)/g and 8.3 log (copies)/g, fewer than in the other parts of the intestine , while the bacterial abundance in the feces was as high as 11.8 log (copies)/g, being about 2 times higher than that in the duodenum and jejunum (P<0.05), and similar to that in the ileum and colon content (P>0.05).Conclusions The inter-mouse variations of bacterial communi-ty composition in the large intestine contents are small .The bacterial composition and abundance are similar suggest that studies on the relationship between large intestine especially colorectal microbiota and diseases may be conducted via fecal sampling.

Objective To investigate the antitumor effects of IL-18 gene transfected T cells on pancreatic cancer cell SW-1990.Methods Construction of IL-18 contained recombinant lentivirus using PCR method and packaged at HEK293T cell, then transfected the human T cells and evaluated the antitumor effects when cocultured with SW-1990.Results The IL-18 gene contained recombinant lentivirus was successfully constructed and packaged, and transfected the T cells, the LDH secretion and IL-2 and IFN-γ content all increased significantly (P<0.01) when cocultured with SW-1990 cell.Conclusions T cells transfected with IL-18 possessed more potent antitumor effects to pancreatic cancer cell SW-1990 as compared to the regular T cells.

ObjectiveTo explore the inductive action of docosapentenoic acid(DPA) on neurite outgrowth in PC12 cells in vitro.MethodsNeurite outgrowth in PC12 cells was examined after the treatment with different concentration of DPA using Motic Zamges Plus software mapping cell image system.Western blot was performed to detect the expression of β Ⅲ-tubulin regulated protein kinase,a neuronal marker as well as ERK and protein kinase B (Akt) phosphorylation.ResultsPC12 cell neurite formation rate was increased in a concentration dependent manner in the induction of DPA,increased by 2.4% (DPA 10 μg/ml,P>0.05),18.6% (DPA 30 μg/ml,P<0.05) and 25.0% (DPA 50 μg/ml,P<0.05) compared with that in the control group.DPA promoted the expression of β Ⅲ-tubulin (P<0.05) and the phosphorylation level of ERK and Akt (P<0.05,P<0.01).ConclusionDPA promotes PC12 cell neurites growth and its mechanism may be related to the activation of ERK and Akt signaling pathways.

Objective To study the clinical risk factors and the characteristics of cerebral magnetic resonance imaging (MRI) of hypoxic-ischemia encephalopathy (HIE) in full-term infants in high-altitude area.Method From January 2014 to December,2016 full-term Tibetan infants with HIE and healthy full-term Tibetan infants admitted to our hospital were enrolled in the study.General conditions and perinatal status were retrospectively analyzed.Univariate analysis and multivariate analysis were used to determine the risk factors of the HIE.MRI characteristics,location of the brain injuries and the correlation between HIE clinical grading and MRI grading were analyzed.Result During the study period,5 172 full-term Tibetan neonates were born in our hospital,198 of them were diagnosed of HIE and the incidence was 3.8％.According to HIE clinical grading,31 were mild,110 were moderate and 57 were severe.MRI grading included 34 mild,131 moderate and 33 severe.The main manifestations of MRI included white matter injury,especially subcortical white matter injury of frontal,parietal and occipital lobes,gray matter injury and diffuse cerebral edema.Mild HIE had a certain correlation with MRI grading,however,severe HIE had poor correlation with MRI grading.Multivariate Logistic regression analysis showed that abnormal birth weight (＜2 500 g or＞4 000 g) and intrauterine distress were independent risk factors of HIE in full-term Tibetan neonates[OR (95％ CI):3.663 (1.961～6.843) and 5.419 (2.487～11.807)].Conclusion Macrosomia at birth,low birth weight and intrauterine distress are independent risk factors of HIE in Tibetan full-term neonates in Lhasa.White matter injury is the main MRI manifestation of HIE.Clinical grading of Mild HIE has good consistency with the MRI grading,but MRI grading is milder than the clinical grading for those with moderate and severe HIE.

Objective To explore the therapeutic effects of soluble cytokines secreted by mesenchymal stem cells (MSCs) on acute liver failure (ALF).Methods MSCs isolated from Sprague-Dawley rats were determined by FACS analysis.Conditioned medium derived from MSCs (MSCs-CM) was collected and analyzed by a cytokine microarray.SD rats were divided into 3 groups:(1) ALF + dulbecco's modified eagle medium (DMEM) group:1 ml DMEM was injected into SD rats after D-Gal administration;(2) ALF + MSCs group:1 ml MSCs (1 × 106) was injected into SD rats after D-Gal administration;(3) ALF + MSCs-CM group:1 ml MSCs-CM was injected into SD rats after D-Gal administration.Biochemical indicators,survival rate,histology and inflammatory factors were studied.Exogenous recombinant rat IL-10,antirat IL-10 antibody and AG490 (STAT3 signaling pathway inhibitor) were administrated to explore the therapeutic mechanism of MSCs-CM.Results The respective serum biochemical indexes of ALF + DMEM group,ALF + MSCs group,and ALF + MSCs-CM group were:ALT (1 709.8 ± 372.1,865.5 ± 52.8,964.7 ± 414.6 U/L),AST (4234.0 ± 807.3,2440.8 ± 511.9,2739.8 ± 587.3 U/L),andTBil (79.3 ± 10.9,43.8 ± 7.0,61.2 ± 6.7 μg/L).The survival rates of the three groups were 10.0％,80.0％,and 70.0％,respectively.The levels of inflammatory factors in each group were IFN-γ (69.8 ± 4.7,46.4 ± 4.3,54.6 ± 2.4pg/ml),IL-1β (58.5 ± 7.6,40.5 ± 6.9,44.1 ± 6.0pg/ml),IL-6 (71.9 ± 16.1,38.4 ± 7.7,45.3 ± 9.0),and IL-10 (38.3 ± 6.0,75.4 ± 11.1,59.6 ± 11.9 pg/ml).Protein microarray results suggested that MSCs-CM expresses a variety of inflammatory-related cytokines,with IL-10 levels being most pronounced.IL-10 (ALT 1 126.9 ± 419.3 U/L,AST2370.8 ± 561.2 U/L) alone significantly reduced transaminase levels compared with ALF group (ALT 1 709.8 ± 372.1 U/L,AST 4234.0 ± 807.3 U/L),while anti-IL-10 antibody (ALT 1 568.5 ± 325.4 U/L,AST4043.7 ± 819.0 U/L) neutralized the therapeutic effect of MSCs-CM (ALT 964.7 ± 414.6 U/L,AST 2 739.8 ± 587.3 U/L).IL-10 could significantly increase the level of pSTAT3 in ALF rats (0.93 ± 0.03 vs 0.68 ± 0.01),while STAT3 inhibitor AG490 (0.84 ± 0.04) could decrease the expression of pSTAT3 and reverse the therapeutic effect of IL-10.Conclusion The factors released by MSCs,especially IL-10,have the potential therapeutic effect on ALF,and STAT3 signaling pathway may mediate the anti-inflammation effects of IL-10.

Objective:To analyze the relationship between both quality and duration of sleep and type 2 diabetes in middle-aged and elderly people in Shanghai.Method:Baseline data was from the '2017 epidemiological survey in Shanghai community residents aged 35 and above on type 2 diabetes’. Restricted cubic splines were used to draw dose-response curves to show the relationship between PSQI score, sleep duration and type 2 diabetes. Logistic regression model was used to analyze the effects of quality and duration of sleep as well as the interaction, on type 2 diabetes.Results:Results showed that the average PSQI score was (4.09±0.10) points, the proportion of poor sleep quality was 12.55% (95% CI: 10.77-14.58) and the average sleep duration was (7.19±0.03) hours. The relationship between PSQI score and diabetes appeared linear, with the relationship between sleep duration and diabetes as U-shaped. After adjusting for confounders, both poor sleep quality (>7 for PSQI score) and short sleep duration (sleep duration <6 hours) significantly increased the risk of type 2 diabetes, with OR=1.17 (95% CI: 1.06-1.30) and 1.20 (95% CI: 1.01-1.41), respectively. From the interaction analysis, data showed that after adjusting for confounders, both sleep duration <6 hours ( OR=1.30, 95% CI: 1.12-1.52) and ≥8 hours ( OR=1.79, 95% CI: 1.04-3.07) with poor sleep quality would increase the risks on diabetes. Conclusion:Both poor sleep quality and short sleep duration were associated with the risk of diabetes, while long sleep duration was only associated with the risk of diabetes when accompanied by poor quality of sleep.

Objective To analyze the clinical features of patients with acute stage brucellosis in Shenzhen,and provide a scientific basis for prevention and control of brucellosis in immigrant city.Methods A retrospective analysis was conducted to collect clinical data of patients with brucellosis admitted to the Department of Infectious Diseases,Shenzhen People's Hospital from May 2013 to May 2018.The patient's epidemiology manifestations,pathogen and laboratory examination results,diagnosis and treatment outcomes and prognosis were analyzed.Results Among the 39 patients with brucellosis,males were predominant,with a male to female ratio of 1.4 ∶ 1.0 (23 ∶ 16),an age of (44.91 ± 17.18) years and 24 cases were non-Guangdong natives.There were 23 cases with epidemiological history,including 14 cases with mutton,sheep viscera and goat milk history;the disease occurred throughout the year,mainly from February to July,a total of 26 cases.The clinical manifestations of the patients were mainly fever,sweating,fatigue,joint and muscle pain,weight loss,and liver or spleen or lymph nodes swelling.The blood culture was identified as 38 cases of Brucella melitensis and 1 case of Brucella suis.All strains were sensitive to common antibiotics in vitro.All cases were diagnosed as acute stage of brucellosis,2 cases with orchitis,1 case with brucellosis meningoencephalitis,3 cases with spondylitis,and 3 cases with misdiagnosis.Thirty-nine patients were cured according to the "Brucellosis Diagnosis and Treatment Guidelines (Trial)" and were followed up for 1 year.Conclusions Patients with brucellosis in Shenzhen are mainly infected with Brucella melitensis;fever,sweating,joint and muscle pain are the main clinical symptoms;the patient's efficacy and prognosis are better after treatment;for the occurrence of occasional misdiagnosis,it is recommended that in immigrant cities,medical staff should strengthen their understanding of brucellosis.

Objective To evaluate the difference of set-up errors between thermoplastic mask and breast bracket in patients receiving intensity-modulated radiotherapy after breast conserving surgery,and the impact of clinical factors associated with set-up errors.Methods A total of 34 patients treated with intensity-modulated radiotherapy after breast conserving surgery from January 2016 to June 2018 were reviewed.Eighteen patients were fixed with thermoplastic mask,and sixteen were with breast bracket.Weekly CBCT scan records were used to analyze set-up errors,and group systematic and random errors were computed.The influence of clinical factors on set-up errors was also analyzed.Results The immobilization technique with thermoplastic mask showed great superior in comparison with breast bracket;however,only in the Ty(translation) and Ry(rotation),the differences had significance.Based on group systematic and random errors,PTV margins in Tx,Ty and Tzwere 2.65,4.36 and 2.87 mm in thermoplastic mask group,as well as 5.71,6.07 and 4.20 mm in breast bracket group,respectively.Multi-factor regression analysis showed that BMI was independent factors affecting set-up errors.Conclusions Compared with breast bracket,the immobilization technique with thermoplastic mask has the potential of reducing set-up errors and PTV margins in patients receiving intensity-modulated radiotherapy after breast conserving surgery,especially in patients with high BMI.

Objective:To analyze the effect of influenza vaccination intervention among key populations of chronic disease management in communities of Shanghai.Methods:A total of 50 787 patients aged ≥60 with diabetes, hypertension and chronic obstructive pulmonary disease (COPD) in Huangpu, Yangpu, Baoshan and Qingpu districts of Shanghai from January 2013 to August 2017 were selected as the intervention group, and 52 268 people from key populations with chronic disease management in Xuhui, Hongkou, Jiading and Fengxian districts were selected as the control group according to the geographical location and economic level. The intervention group accepted follow-up and health education of influenza vaccination via chronic disease outpatient based on information system. The implementation time of the intervention was from September 2017 to January 2018. The basic information and diagnosis information of two groups, and intervention completion of the intervention group were obtained from Shanghai chronic disease management information system and hospital record system.Results:The age of the intervention group and the control group were (76.76±8.33) and (77.97±8.51) years old, respectively ( P<0.001); and there were statistical differences in gender, occupational and influenza vaccination rate between the two groups ( P<0.001). A total of 28 644 (56.40%) subjects of the intervention group received intervention. There was no significant difference in age composition between finished and unfinished intervention groups ( P=0.095), and there was significant difference in gender composition ( P=0.044). Before the intervention, the vaccination rate of the intervention group was 0.75% (382 subjects) which was lower than that of the control group with 1.02% (533 subjects) (χ 2=20.96, P<0.001). After the intervention, the vaccination rate of the intervention group was 1.73% (496 subjects) which was higher than that of the control group with 1.42% (744 subjects) (χ 2=11.65, P=0.001). Subjects that were male, younger, uptake of influenza vaccine before the intervention, received intervention and professional and technical personnel were more likely to take influenza vaccine, with OR (95 %CI) 1.29 (1.13-1.47), 0.97 (0.96-0.98), 260.30 (215.21-314.83), 1.85 (1.61-2.11) and 1.48 (1.10-1.99), respectively. Conclusion:Influenza vaccination intervetion raised the vaccination rate of key population of chronic disease management. Male, younger, those who had been vaccinated before the intervention, who received the intervention, and professional and technical personnel were more likely to be vaccinated.

Objective:To analyze the effect of influenza vaccination intervention among key populations of chronic disease management in communities of Shanghai.Methods:A total of 50 787 patients aged ≥60 with diabetes, hypertension and chronic obstructive pulmonary disease (COPD) in Huangpu, Yangpu, Baoshan and Qingpu districts of Shanghai from January 2013 to August 2017 were selected as the intervention group, and 52 268 people from key populations with chronic disease management in Xuhui, Hongkou, Jiading and Fengxian districts were selected as the control group according to the geographical location and economic level. The intervention group accepted follow-up and health education of influenza vaccination via chronic disease outpatient based on information system. The implementation time of the intervention was from September 2017 to January 2018. The basic information and diagnosis information of two groups, and intervention completion of the intervention group were obtained from Shanghai chronic disease management information system and hospital record system.Results:The age of the intervention group and the control group were (76.76±8.33) and (77.97±8.51) years old, respectively ( P<0.001); and there were statistical differences in gender, occupational and influenza vaccination rate between the two groups ( P<0.001). A total of 28 644 (56.40%) subjects of the intervention group received intervention. There was no significant difference in age composition between finished and unfinished intervention groups ( P=0.095), and there was significant difference in gender composition ( P=0.044). Before the intervention, the vaccination rate of the intervention group was 0.75% (382 subjects) which was lower than that of the control group with 1.02% (533 subjects) (χ 2=20.96, P<0.001). After the intervention, the vaccination rate of the intervention group was 1.73% (496 subjects) which was higher than that of the control group with 1.42% (744 subjects) (χ 2=11.65, P=0.001). Subjects that were male, younger, uptake of influenza vaccine before the intervention, received intervention and professional and technical personnel were more likely to take influenza vaccine, with OR (95 %CI) 1.29 (1.13-1.47), 0.97 (0.96-0.98), 260.30 (215.21-314.83), 1.85 (1.61-2.11) and 1.48 (1.10-1.99), respectively. Conclusion:Influenza vaccination intervetion raised the vaccination rate of key population of chronic disease management. Male, younger, those who had been vaccinated before the intervention, who received the intervention, and professional and technical personnel were more likely to be vaccinated.