Objective To analyze 5S ribosomal DNA (5S rDNA) sequences of two Trichinella isolates from Guangxi. Methods The fragments of 5S rDNA were obtained by PCR from the isolates of Debao and Nandan, and sequencing was made for the PCR products. Homogeneity, genetic distance matrix and phylogenetic tree were analyzed by related software. 5S rDNA sequences of the two isolates were compared separately with those of Trichinella species in GenBank. Results 5S rDNA sequences of three Trichinella isolates (Debao, Nandan and T.spiralis) showed the same length at 695 bp. There were 4 variable positions. The homogeneities of Debao and Nandan isolates with T.spiralis were 99.0% and 99.1% respectively. The homogeneities between Debao isolate and Nandan isolate was 98.8%. Compared with other Trichinella isolates in GenBank, they were all less than 94.2%. The evolutionary distance among isolates of Debao and Nandan and T.spiralis was 0.014. Meanwhile, the evolutionary distances between the Guangxi isolates and other Trichinella isolates in GenBank were more than 0.056. Phylogenetic tree analysis revealed that two isolates of Guangxi and T.spiralis located at the same node, revealing a close relationship. Bootstrap confidence values in two phylogenetic trees were 96 and 99, respectively. Conclusion The two Trichinella isolates of Guangxi show a high homogeneity with T.spiralis,locate at the same nodes in phylogenetic tree,suggesting that the Debao and Nandan Trichinella isolates be identified as T.spiralis.

Objective To analyze the results of inspection certification on malaria elimination in Baise City,and summarize the experiences of malaria elimination at a prefecture level. Methods According to Evaluation Schemes of Malaria Elimination (2014 edition)and Municipal Evaluation Schemes of Malaria Elimination in Guangxi(2016 edition),the malaria elimination work in Baise City was evaluated. In addition,2 counties(cities,districts)in the administrative region of Baise City were ran-domly selected for review assessment. Then the assessment and certification results were analyzed. Results The score of evalua-tion on malaria elimination in Baise City was 95.80,and the scores of review in Tiandong County and Jingxi City were 94.70 and 90.60,respectively. According to the weight of the three scores,namely 0.4,0.3,0.3,the final score of malaria elimination in Baise City was 93.91,which reached the national standards of malaria elimination score(more than 85). Conclusions Baise City has passed the inspection certification of malaria elimination by the authority of Guangxi Zhuang Autonomous Region. How-ever,the malaria monitoring post-elimination still should continue to consolidate the elimination achievements.

After the digital resources in 8 famous domestic medical academic libraries were investigated, the status quo and characteristics of digital resources development and the use of different social networking tools in these libraries were analyzed, the crowd-sourcing concept was used to guide the users to participate in the development of digital resources using the social networking tools, and a platform for users participating in information organization and integration was constructed by making use of mobile communication/WeChat.

Objective To investigate the relationship between serum C-reactive protein(CRP) level ,CRP gene C+1444T poly-morphism and the risk with Acute myocardial infarction (AMI) in Chinese Han population in Sunan region .Methods The CRP gene C+1444T polymorphism was genotyped by Polymerase reaction restriction-fragment length polymorphism (PCR-RFLP) and the serum CRP level was measured by enzyme linked immunosorbent assay (ELISA) between 227 patients with AMI(AMI group) and 161 control subjects .Results No differences were found in genotype distribution between AMI group and controls (CC 82 .38% ,CT 17 .62% ,TT 0% vs 86 .96% ,13 .04% ,0% )(P>0 .05) .The serum CRP level in AMI group was significantly higher than controls(P< 0 .01) .There was no differences in the serum level between any genotypes of the CRP gene C + 1444T (P<0 .05) .Conclusion The CRP gene C+1444T polymorphism is not associate with increased risk of AMI ,and it have no effect with the serum level in Chinese Han population in Sunan region .

Objective To investigate the antimicrobial resistance of clinical isolates from Renji Hospital,Shanghai Jiao Tong University School of Medicine during the period from 2005 to 2015.Methods Antimicrobial susceptibility testing was carried out according to Kirby-Bauer method.Results were analyzed according to CLSI 2015 breakpoints.Results A total of 55 155 nonduplicate clinical isolates were collected from 2005 to 2015.The top 5 most frequently isolated bacterial species were E.coli (15.0％),P.aeruginosa (14.0％),A.baumannii (11.9％),K.pneumoniae (11.8％) and S.aureus (10.2％).Gram positive cocci and gram negative organisms accounted for 35.8％ and 64.2％,respectively.The prevalence of methicillin-resistant strains in S.aureus (MRSA) and coagulase negative Staphylococcus (MRCNS) was 70.2％ (3 967/5 650) and 83.2％ (4 997/6 004).No staphylococcal strain was resistant to vancomycin,teicoplanin or linezolid.Fifteen strains of Enterococcus were found resistant to vancomycin.The average prevalence of ESBLs-producing strains was 70.4％ (5 843/8 300) in E.coli,53.5％ (3 500/6 539) in Klebsiella spp.and 44.1％ (557/1 263) in P mirabilis.A few carbapenemaseproducing K.pneumoniae strains were identified for the first time in 2012 with the prevalence of 0.6％ (4/656),and the prevalence hit high (30.1％,142/472) in 2015.The prevalence of carbapenemase-producing E.coli was 2.0％ (16/787) in 2015,and almost zero in the other years.The prevalence of extensively drug-resistant A.baumannii and P.aeruginosa was 39.1％ (2 566/6 556) and 4.0％ (308/7 704),respectively.Extensively drug-resistant strain was identified in 9 of the strains of 189 E.aerogenes isolates.Conclusions Bacterial resistance is still on the rise,which poses a major challenge to clinical antimicrobial therapy,especially the multi-drug resistant and extensively drug resistant bacteria.

Objective To explore the action mechanism of basic fibroblast growth factor (bFGF) on vascular smooth muscle cells (VSMCs) in spontaneously hypertensive rats (SHR).Methods Ts were obtained from SHR and SD rats.The aortic VSMCs were cultured in vitro by tissue explant method.VSMCs were treated with different concentration of exogenous bFGF (0 ng/ml,20 ng/ml,40 ng/ml,60 ng/ml,80 ng/ml,100 ng/ml) for 48 h,then cell proliferation was detected by 3 (4,5 dimethylthiazol)2,5 diphenyltetrazolium bromide (MTT) colorimetric assay.VSMCs from SHR in control group were treated with bFGF (100 ng/ml) for 48h.VSMCs from SHR in treatment group were treated with bFGF (100 ng/ml) plus Proteinkinase C(PKC) inhibitor (staurosporine) for 48 h.Results After treatment with different concentration (0 ng/ml,20 ng/ml,40 ng/ml,60 ng/ml,80 ng/ml,100 ng/ml) of bFGF for 48 h,the values measured by MTT colorimetric method were 0.402 ± 0.103,0.605 ±0.090,0.696 ± 0.131,0.812 ± 0.080,0.901 ± 0.065,1.056±0.078 respectively in aortic VSMCs from SD rats,and 0.404±0.065,0.507±0.078,0.608±0.057,0.704 ± 0.107,0.812 ± 0.097,0.908 ± 0.032 respectively in aortic VSMCs from SHR.Compared with control group,the values measured by MTT colorimetric method were decreased in treatment group (P＜0.05).The proliferative effect of bFGF in aortic VSMCs from SHR was attenuated after administration of PKC inhibitor staurosporine.Conclusions Exogenous bFGF administration promotes VSMCs proliferation in SHR and SD rats in a concentration-dependent manner.PKC plays an important role in the signal transduction mechanism in VSMCs proliferation by exogenous bFGF.

Objective To investigate the postoperative complications after laparoscopic splenectomy for patients with portal hypertension,and analyze the risk factors for postoperative complications.Methods The clinical data of 65 patients with portal hypertension who received laparoscopic splenectomy at the West China Hospital from September 2003 to September 2012 were retrospectively analyzed.The postoperative complications were analyzed using the modified Clavien classification system,and the risk factors for postoperative complications were analyzed.The measurement data and the count data were analyzed using the t test,chi-square test or the Fisher exact probability.The univariate and multivariate analysis were done using the Logistic regression model.Results Twenty-nine patients received hand-assisted laparoscopic splenectomy and 36 received total laparoscopic splenectomy (2 patients were converted to open surgery due to intraoperative bleeding).Sixteen patients had 20 complications.The incidence of postoperative complications of the hand-assisted laparoscopic group was 10.3％ (3/29),which was significantly lower than 38.2％ (13/34) of the total laparoscopic group (x2 =3.90,P ＜ 0.05).According to the modified Clavien classification system,there were 4 patients with grade Ⅰ complication,2 patients with grade Ⅱ complication,8 patients with grade Ⅲ a complication,1 with grade Ⅲ b complication,1 with grade Ⅳa complication,and no Ⅳb or Ⅴ complication was observed.The duration of postoperative hospital stay was (8.4 ± 2.9) days.For patients with grade Ⅱ,Ⅲ and Ⅳ complications,the duration of postoperative hospital stay was (10.1 ± 3.3) days,which was significantly longer than (7.7 ± 2.5) days of patients with grade Ⅰ complication or without complications (t =4.30,P ＜ 0.05).The results of univariate analysis showed that ASA classification and application of hand-associated device were risk factors for postoperative complications (x2=21.60,5.10,P ＜0.05).The results of multivariate analysis showed that ASA grade Ⅲ and non-application of hand-assisted device were independent risk factors for postoperative complications (OR =23.60,4.60,P ＜ 0.05).The incidence of postoperative complications of patients with ASA grade Ⅲ were 17.00 times higher than patients with ASA grade Ⅱ,and the incidence of postoperative complications of patients who received total laparoscopic splenectomy was 5.00 times higher than those who received hand-assisted laparoscopic splenectomy.Conclusions The incidence of postoperative complications is higher in patients with portal hypertension,while the severity of the complications is under ASA grade Ⅲ.ASA classification and application of hand-assisted device are correlated with the incidence of postoperative complications.

Objective To evaluate the effect of malaria surveillance and control of Guangxi Zhuang Autonomous Region in 2013,and explore the suited surveillance and management of imported malaria cases,so as to provide the evidence for formulat?ing the scientific control measures of imported malaria. Methods The endemic data and control measures of malaria in Guangxi in 2013 were collected and analyzed statistically. Results A total of 1 251 malaria cases were found in Guangxi in 2013,with 88.25%(1 104 cases)of falciparum malaria,8.63%(108 cases)of vivax malaria,0.64%(8 cases)of quartan malaria,1.52%(19 cases)of ovale malaria,and 0.96%(12 cases)of mixed infection;93.21%(1 166 cases)were off?farm workers;96.56%(1 208 cases)were imported from Africa and mainly consisted of falciparum malaria cases;3.44%(43 cases)were imported from southeast Asia and mainly consisted of vivax malaria cases. The cases of imported malaria were increasing and the infection rate in 2013 was increased by 464%compared with that in 2012. Conclusion The imported malaria cases in Guangxi mainly come from Africa at present. Promoting the health education and professional skill of malaria control and treatment ,as well as the diagnosis and treatment of the patients in early time are important measures to control the imported malaria.

Lignin degradation products are toxic to microorganisms, which is one of the bottlenecks for fuel ethanol production. We studied the effects of phenolic ketones (4-hydroxyacetophenone, 4-hydroxy-3-methoxy-acetophenone and 4-hydroxy-3,5-dimethoxy-acetophenone) derived from lignin degradation on ethanol fermentation of xylose and cellular lipid composition of Pichia stipitis NLP31. Ethanol and the cellular fatty acid of yeast were analyzed by high performance liquid chromatography (HPLC) and gas chromatography/mass spectrometry (GC/MS). Results indicate that phenolic ketones negatively affected ethanol fermentation of yeast and the lower molecular weight phenolic ketone compound was more toxic. When the concentration of 4-hydroxyacetophenone was 1.5 g/L, at fermentation of 24 h, the xylose utilization ratio, ethanol yield and ethanol concentration decreased by 42.47%, 5.30% and 9.76 g/L, respectively, compared to the control. When phenolic ketones were in the medium, the ratio of unsaturated fatty acids to saturated fatty acids (UFA/SFA) of yeast cells was improved. When 1.5 g/L of three aforementioned phenolic ketones was added to the fermentation medium, the UFA/SFA ratio of yeast cells increased to 3.03, 3.06 and 3.61, respectively, compared to 2.58 of the control, which increased cell membrane fluidity and instability. Therefore, phenolic ketones can reduce the yeast growth, increase the UFA/SFA ratio of yeast and lower ethanol productivity. Effectively reduce or remove the content of lignin degradation products is the key to improve lignocellulose biorefinery.
Acetophenones ; chemistry ; Ethanol ; chemistry ; Fermentation ; Industrial Microbiology ; Ketones ; chemistry ; Lignin ; chemistry ; Lipids ; chemistry ; Phenols ; chemistry ; Pichia ; chemistry ; Xylose ; chemistry

Objective To analyze the epidemic characteristics of the imported malaria cases in Guangxi Zhuang Autono?mous Region in 2014,so as to assess the transmission risk and explore the prevention and control strategy. Methods The data of the malaria epidemic situation in the network direct report system of Guangxi in 2014 and the annual report of malaria epidem?ic situation in 14 cities were collected. The epidemiological information of the imported malaria cases was analyzed. Results A total of 184 malaria patients were reported in Guangxi in 2014,with a descent rate of 85.29%when compared to that in 2013 (1 251 cases),and the incidence rate was 0.35/100 000. All the cases were imported from abroad,and four species of Plasmodi?um were found in their blood samples. The number of falciparum malaria cases was the most(49.46%),followed by the ovale malaria cases(32.07%). All the cases were distributed in 32 counties(districts)of 11 cities ,and 65.76%of them were distrib?uted in Shanglin County. Most of the cases were male(98.37%),and those aged in 20-49 years accounted for 87.50%. The im?ported cases came from 14 countries of Africa(86.41%)and 2 countries of Southeast Asia(13.59%),in which,48.37%of the cases were imported from Garner. The main occupation of the cases in abroad was gold mining work(86.96%). The cases were reported all the year around,with no obvious seasonality. The interval time of back home to attack of the patients with tertian ma?laria and ovale malaria was longer. Conclusion Africa and Southeast Asia is the main source of imported malaria cases in Guangxi,and the migrant workers returning home may have the risk of malaria recurrence,which should be paid enough atten?tion to.