Objective To investigate the effect of Mlot-4 cells onset with Roscovitine (ROSC)as some Cyclin-dependent kinases(CDK),inhibitor.Methods The logarithmic growth phase Molt-4 cells treated with ROSC at a final concentration ranging between 1～20 μmol/L and harvested in different time point,DNA assay of single cells by flow cytometry was used to detect the effect of cell cycle arrest and Annexin-V/FITC assay was used to detect the effect of cell apoptosis. Results It showed that ROSC exerted strong inhibitory effect on proliferation and cell cycle progression of Molt-4 Accumulation of G2/M arrested cells starting 6 h after onset of 10 μmol/L and 20 μmol/L ROSC;at the same time,the cell apoptosis of Molt-4 would be detected,According with the time and concentration changing,the cell apoptosis rate would rise.Conclusion It is concluded that Roscovitine(ROSC)as some Cyclin-dependent kinases(CDK),inhibitor,It has dual effects to Molt-4 cells,not only the effect of cell cycle arrest but also the effect of cell apoptosis.

Objective To investigate the phosphorylation and dephosphorylation of CDK1 based on the specific cell cycle apoptosis in Molt-4 cells and active variety of CDK1 in cell cycle specific apoptosis.Methods The exponential phase of growth Molt-4 cells (the human acute lymphoblastic leukemia cell line) were induced with dose response and time course of Camptothecin (CPT).The specific cell cycle apoptosis was detected with API method,then cell apoptosis was verified with post sorting confocal method.Meanwhile,the phosphorylation and dephosphorylation of CDK1 were detected by the protein electrophoretic analysis (Western blot).Results The specific cell cycle apoptosis occurred on exponential phase of growth Molt-4 cells after CPT treatment.When Molt-4 cells occured S-phase apoptosis, the apoptosis cell phosphorylation of CDK1-Thr161 band was more narrow than that of control cells, the apoptosis cell phosphorylation of CDK1-Thr15 band almost had the same band with control cells.Conclusion Cell apoptosis frequently developed in different cell cycle phase. API assay is quick and efficient method to analyze specific cell cycle apoptosis. When cell apoptosis take place in S-phase,the phosphorylation activity of CDK1 is inhibited.

Objective To investigate apoptosis of gastric cancer cells induced by taxol,and its specific apoptotic cell cycle phase. Methods The apoptosis rate of gastric cancer cell line MKN-28 induced by taxol was detected with Sub-G1 method.The specific apoptotic cell cycle phase Was detected with API and PSC method.The sensitivity of 20 cases clinic gastric cancer specimens induced by taxol was detected with the method MTT.Results With the Sub-G1 method the MKN-28 cells were induced by 10 μg/ml taxol,after 10 h,the apoptosis rate reached its top apex;with the API method and the PSC method,the specific apoptosts took place in G_2/M phase;the chemotherapy sensitivity of 16 cases out of 20 cases clinic gastnc cancer specimens exceed 50%with the method MTT. Conclusion Taxol could induce gastric cancer cells to aimptosis and the apoptosis takes place in G_2/M phase;Taxol is sensitive to clinic gastric cancer speclmens.

Objective To understand the status of soil?transmitted nematode infections in Xiding Township,Menghai Coun?ty,Yunnan Province,so as to provide the reference for formulating the strategy of soil?transmitted nematodosis control. Meth?ods Soil?transmitted nematode eggs in feces were detected by the Kato?Katz method,and the eggs of Enterobius vermicularis were detected by the cellophane tape method in children. The soil samples were collected from vegetable ,fruit and other crop fields of 15 residents randomly to detect hookworm. Results The stool samples from 1 002 residents were examined and the soil?transmitted nematode infection rate was 20.06%(201/1 002). The infection rates of hookworm,Ascaris lumbricoides and Trichu?ris trichura were 18.96%(190 cases),1.70%(17 cases)and 0.90%(9 cases)respectively. The percentages of people with light infection of hookworm,A. lumbricoides and T. trichura were 97.37%(185/190),88.24%(15/17)and 100%(9/9)respec?tively. No infection of E. vermicularis was found. Fifteen soil samples were tested,and no hookworm was found in the soil. Con?clusion The infection rate of soil?transmitted nematode in Xiding Township,Menghai County is high,but the infectiosity is light. The control and monitoring of soil?transmitted nematodosis should be strengthened in this area.

Objective To observe the efficacy and safety of endoscopic variceal ligation (EVL) and esophageal variceal sclerotherapy (EVS) with different hardeners for esophageal variceal bleeding (EVB).Methods Clinical data of 314 patients with EVB were retrospectively reviewed.The patients were divided into 5 groups according to the endoscopic treatments they have received,i.e.,endoscopic variceal ligation (EVL) group (n =112),sodium morrhuate sclerotherapy (EVS1) group (n =48),lauromacrogol sclerotherapy (EVS2) group (n =40),EVL plus sodium morrhuate sclerotherapy (EVLS1) group (n =26) and EVL plus lauromacrogol sclerotherapy (EVLS2) group (n =88).The efficacy,variceal recurrence rate and complication rate were evaluated.Results There was no significant difference in efficacy of stop bleeding among 5 groups,which was 85.7％ (96/112) in EVL group,83.3％ (40/48) in EVS1 group,92.5％(37/40) in EVS2 group,92.3％ (24/26) in EVLS1 group and 94.3％ (83/88) in EVLS2 group (P ＞0.05).The complete cure rates in EVLS1 group (88.5％,23/26) and EVLS2 group (87.5％,77/88)were significantly higher than those in 3 other groups (P ＜ 0.05).Rebleeding rates in EVS1 group (18.8％,9/48) and EVL group (11.6％,13/112) were significantly higher than those in other 3 groups (P ＜0.05).The patients were followed up for 6-18 months,and the varices recurrence rate was highest in group EVL (23.2％,26/112) and lowest in EVLS2 (10.2％,9/88,P ＜0.05).The complication rate in group EVS1 (32.2％,49/152) was significantly higher than that in other 4 groups (P ＜0.05).Conclusion EVL plus EVS,either with sodium morrhuate or lauromacrogol EVS is safe and effective for EVB,especially EVL plus Lauromacrogol EVS,may become an optimal therapy to control esophageal variceal bleeding and rebleeding.

Objective To investigate the risk factors for post-ERCP complications. Methods Data of the patients who underwent ERCP in the First Affiliated Hospital of Nanchang University from 1 January 2011 to 31 December 2013 were retrospectively analyzed. Post-ERCP complications were analyzed by univariate and multivariate analyses. Results A total of 277 patients out of 1 951 developed complications, 101(5.18%)pancreatitis, 54(2.77%)hyperamylasemia(not including pancreatitis), 134(6.87%) biliary infection,8(0.41%)hemorrhage,1(0.05%)obstruction and 1(0.05%)perforation.Multivariate analyses showed cholangiocarcinoma(P=0.002,OR=2.39, 95% CI:1.38-4.14), long operation time(>60 min)(P=0.020,OR=3.77,95%CI:1.23-11.53)and endoscopic sphincterotomy(EST)(P=0.008, OR=2.56,95% CI:1.28-5.14)and entrance of guidewire to pancreatic duct(P=0.012,OR=1.43, 95%CI:1.08-1.87)were independent risk factors for PEP. Cholangiocarcinoma(P<0.01, OR=2.93, 95%CI:1.88-4.56),multiple times of ERCP during the period of hospitalization(P<0.01, OR=2.53, 95%CI:1.63-3.93)were independent risk factors for post-cholangitis. However, EST(P=0.03, OR=0.65,95%CI:0.44-0.97)and antibiotics prophylaxis after ERCP(P=0.03, OR=0.64, 95% CI:0.39-0.95)were protective factors for post-cholangitis. ConclusionCholangiocarcinoma, endoscopic sphincterotomy, long operation time(> 60 min)and entrance of guidewire to pancreatic duct were independent risk factors for PEP. Cholangiocarcinoma and multiple ERCP during the period of hospitalization are independent risk factors for post-cholangitis.EST and antibiotics prophylaxis after ERCP might reduce the occurrence of cholangitis.

ABSTRACT:In recent years ,there has been high prevalence of murine typhus in Yunnan Province ,People's Republic of China .A large outbreak of murine typhus occurred in Xishuangbanna Prefecture ,Yunnan Province in 2010 .However ,not all cases were confirmed by laboratory assays ;therefore ,field epidemiologic and laboratory investigations of murine typhus in Xishuangbanna Prefecture were conducted in 2011 .Blood samples were collected from clinical diagnostic cases at the acute and convalescence stages of murine typhus in Xishuangbanna Prefecture ,Yunnan Province ,from June to September of 2011 ,and blood and spleen samples were collected from mice sharing the same habitats as the patients .Immunofluorescence assays were used to test for the presence of IgM and IgG antibodies against Rickettsia typhi in sera from patients and mice .Real‐time PCR was used to detect the groEL gene of R .typhi in blood clots from patients at the acute stage and in spleen tissue from mice .A total of 1 157 clinically diagnosed murine typhus cases occurred in Xishuangbanna Prefecture ,Yunnan Province in 2011 ,with an incidence of 102 .10/100 000 .Of these cases ,80 were investigated by laboratory assays and 74 of 80 patients were confirmed to have murine typhus .The coincidence rate between the clinical diagnosis and laboratory detection was 92 .50% .The positivi‐ty rate for IgG antibodies against R .typhi was 14 .0% (14/100) for Rattus f lavipectus ,while the rate by PCR was 9 .0%(9/100) .That laboratory diagnoses confirmed that the severity of the murine typhus outbreak in Xishuangbanna cannot be ig‐nored .The distribution of host animals transmitting R .typhi underscores this conclusion .

Objective To investigate the effects of antibiotic prophylaxis on post-operation complications after endoscopic retrograde cholangio-pancreatography (ERCP).Methods From January 1st,2011 to December 31st,2013,1 951 patients undergoing ERCP were enrolled and divided into postoperative antibiotic prophylaxis group (antibiotics group,630 cases) and postoperative non-antibiotic treatment group (non-antibiotics group,1 321 cases).Complications after ERCP were compared between the two groups.Chi square test,single factor analysis and multiple factor analysis were performed for statistical analysis.Results Among the 1 951 patients,277 patients had postoperative complications:101 patients (5.18％) with post-endoscopic retrograde cholangio-pancreatography pancreatitis (PEP),54 patients (2.77％) with hyperamylasemia,134 patients (6.87％) with biliary infection,eight patients (0.41％) with hemorrhage,one patient (0.05％) with intestinal obstruction and one patient (0.05％) with perforation.The incidence of postoperative biliary infection of antibiotics group was 4.44％ (28/630),which was lower than that of non-antibiotics group (8.02％,106/1 321),and the difference was statistically significant (x2 =8.546,P =0.030).The incidences of PEP of antibiotics group and nonantibiotics group were 4.92％ (31/630) and 5.30％ (70/1 321),respectively.The incidences of postoperative hyperamylasemia of antibiotics group and non-antibiotics group were 3.02％oo (19/630) and 2.65％ (35/1 321),respectively.The incidences of upper gastrointestinal hemorrhage were 3.02％ (19/630) and 2.65％ (35/1 321),respectively.The incidences of intestinal obstruction were 0 (0/630) and 0.08％ (1/1 321),respectively,while the incidences of perforation post-operation were 0.16％ (1/630) and 0 (0/1 321),respectively,and the differences were not statistically significant (all P＞0.05).Cholangiocarcinoma (odd ratios (OR)=2.93,95％ confidence interval (CI) 1.88 to 4.56,P＜0.01) and repeated ERCP during hospitalization (OR=2.53,95 ％ CI 1.63 to 3.93,P＜0.01) were the independent risk factors of cholangitis after operation.However,endoscopic sphincterotomy (OR=0.65,95 ％ CI 0.44 to 0.97,P =0.030) and antibiotics prophylaxis (OR =0.64,95％ CI 0.39 to 0.95,P =0.030) were the protective factors.Conclusions Antibiotic prophylaxis after ERCP can reduce the occurrence of postoperative cholangitis.Paitents with cholangiocarcinoma,repeated ERCP procedures during hospitalization or without endoscopic sphincterotomy should be recommended for antibiotic prophylaxis.

Severe acute pancreatitis (SAP) is normally related to multiorgan dysfunction and local complications. Studies have found that local pancreatic renin-angiotensin system (RAS) was significantly upregulated in drug-induced SAP. The present study aimed to investigate the effects of angiotensin II receptors inhibitor valsartan on dual role of RAS in SAP in a rat model and to elucidate the underlying mechanisms. 3.8% sodium taurocholate (1 ml/kg) was injected to the pancreatic capsule in order for pancreatitis induction. Rats in the sham group were injected with normal saline in identical locations. We also investigated the regulation of experimentally induced SAP on local RAS expression in the pancreas through determination of the activities of serum amylase, lipase and myeloperoxidase, histological and biochemical analysis, radioimmunoassay, fluorescence quantitative PCR and Western blot analysis. The results indicated that valsartan could effectively suppress the local RAS to protect against experimental acute pancreatitis through inhibition of microcirculation disturbances and inflammation. The results suggest that pancreatic RAS plays a critical role in the regulation of pancreatic functions and demonstrates application potential as AT1 receptor antagonists. Moreover, other RAS inhibitors could be a new therapeutic target in acute pancreatitis.
Amylases ; Animals ; Blotting, Western ; Fluorescence ; Inflammation ; Intercellular Adhesion Molecule-1 ; Lipase ; Microcirculation* ; Models, Animal ; P-Selectin ; Pancreas ; Pancreatitis* ; Peroxidase ; Polymerase Chain Reaction ; Radioimmunoassay ; Rats* ; Receptors, Angiotensin ; Renin-Angiotensin System* ; Taurocholic Acid ; Valsartan

Bambusa emeiensis is one of the preponderant species of sympodial bamboos in Sichuan province of China, and has excellent fiber length and quality as raw materials for papermaking, textile and other industries. In this study, with the application of Illumina HiSeq™ 2000 platform, we analyzed transcriptome in B. emeiensis with different heights of 10, 50, 100 and 150 cm. A total of 69.28 M reads were obtained, and a sum up of 111 137 bands of Unigenes were acquired following de novo stitching, assembly and clustering, among which there were 63 094 bands that had been integrated in the COG, GO, KEGG, Swiss-Prot and Nr databases using annotated methods. These Unigenes not only had general functions, such as transcription and signal transduction, but were also involved in sucrose transport and metabolism, secondary metabolites and cell wall biosynthesis. There was significant difference regarding the expression of cellulose synthase gene in B. emeiensis at different heights, relevant genes were found that might be responsible for the regulation of the growth and development of B. emeiensis as well as the biosynthesis of cellulose and lignin. Our findings could provide some elementary theories for breed improvement of B. emeiensis.