0.05) compared with control group at 1 h and 3 h; while ~FL 1 in DEX group at 5 h (660.91?72.95) was significant lower (P

AIM: To study the effect of ERK inhibition on the mitochondrial potential change in dexamethasone (DEX)-induced thymocyte apoptosis. METHODS: ERK activity was inhibited by PD098059 (PD), and 4 experimental groups were set: control, PD only, DEX and PD+DEX. Annexin V-FITC/PI double staining flowcytometry was used to detect apoptotic cells at time points of 3 h, 5 h and 7 h. JC-1 staining flowcytometry was adopted to examine mitochondrial membrane potential (△?m) at time points of 3 h, 7 h and 11 h. RESULTS: By stimulation with 1 ?mol/L DEX, the apoptotic rates of mouse thymocytes at 3 h, 5 h and 7 h were (19.63?0.35)%, (41.84?1.67)% and (67.00?2.43)%, respectively, and had significantly difference from control group (4.98?0.39)%, (6.08?0.33)% and (9.31?0.34)% (P0.05). At 3 h, 7 h and 11 h, the rates of low △?m cells were (21.23?1.43)%, (55.34?1.78)% and (70.88?2.87)%, significantly higher than that in control group (P0.05). CONCLUSION: DEX induces mouse thymocyte apoptosis at least partly through ERK pathway, and ERK inhibition has an important biological significance during this process.

Objective To investigate the effect of advanced oxidation protein products (AOPPs) on human renal tubular epithelial cells(HK-2) autophagy.Methods HK-2 cells were stimulated with AOPPs.RT-qPCR and Western blot were used to determine the expression of autophagy related protein LC3-Ⅱ/LC3-Ⅰ,Beclin1 and p62;Western blot was utilized to examine the activation of p38 MAPK pathway.Then p38 MAPK inhibitor (SB203580) was added and co-processed with AOPPs.The change of autophagy was observed Also,autophagy inducer rapamycin was added and co-processed with AOPPs.RT-qPCR and Western blot were used to detect the expression of cell cycle inhibitory protein p27.The cell total protein level was detected by the bicinchoninic acid (BCA) method.The hypertrophy change was observed.Results AOPPs down-regulated the expression of LC3-Ⅱ/LC3-Ⅰ and Beclin1,up-regulated expression of p62 and activated p38 MAPK pathway;in comparison with the AOPPs alone treatment group,the expression of LC3-Ⅱ/LC3-Ⅰ and Beclin in the SB203580 co-processing group was increased,while p62 was decreased;the p27 expression and cells total protein in the sirolimus co-processing group were down-regulated.Conclusion AOPPs inhibits the autophagy of HK-2 cells by activating p38 MAPK pathway and the autophagy inhibition participates in HK-2 cell hypertrophy.

Objective To explore the danger of lead exposure in newborns who accepted the blood stored in blood bank for blood change treatment.Methods The lead level of blood was examined before and after blood change treatment for 37 neonates with hyperbilirubinemia who accepted 53 cases blood stored in blood bank during Jun.to Dec.2006.The level of blood lead was measured by graphite stove atom absorb spectrum method.Results The average lead level of 53 cases blood stored in blood bank was 101.02 ?g/L,which had attained the level of lead poisoning.There were 15 cases(28.5%) whose blood lead levels was very high(≥100 ?g/L),3 cases whose blood lead level ≥200 ?g/L.After blood change treatment,the percentage of the blood lead level ≥100 ?g/L rose from 2.9% to 19.0%.The average level of blood lead after blood change treatment was higher than before(P

Objective To analyze the related factors of lymph node metastasis in N2 group of patients with non-small cell lung cancer,and found its meaning for lymph node dissection.Methods A retrospective analysis was made on 110 patients with non-small cell lung cancer from July 2014 to May 2016 in our thoracic surgery department.Potential related factors were collected,single factor analysis and variate analysis were carried out to find the relationship between N2 lymph node metastasis and potential related factors.Results Univariate analysis showed that the longest diameter of the tumor ＞ 2 cm (P =0.016),lymph node imaging (P =0.021),pleural involvement (P =0.002) were related factors of lymph node metastasis in N2 group,and these three factors were independent related factors of lymph node metastasis in N2 group.Conclusions The longest diameter of the tumor,lymph node imaging and pleural involvement are related factors of N2 lymph node metastasis.Systematic lymph node dissection is strongly recommended for patients with three related factors at the same time.

Objective To investigate the high-risk behaviors related to acquared immune deficiency syndrome/sexually transmitted disease (AIDS/STDs) infection among fishermen in Lv-si harbor,Jiangsu province.Methods A cross-sectional study was designed to investigate the research participants' demographic characteristics,high-risk behaviors that related to AIDS/STDs.Logistic regression was performed to measure the associations between potential risk factors and reported potential high-risk sexual behavior.Results 817 fishermen participated in the study and casual or commercial sex activities appeared to be the main high-risk behavior for AIDS/STDs infection in the target population.The rates of casual and commercial sex reported were 18.1％ and 28.9％ among fishermen.Risk factors associated with AIDS/STDs related high-risk behaviors among fishermen were high mobility (OR=1.516,P=0.038),higher lifetime sex frequency (OR=1.422,P=0.002)and unmarried status ( OR =7.527,P=0.014).Protective factors against high-risk behaviors were low intake of alcohol (OR=0.803,P=0.053),negative STD history (OR=0.268,P=0.001 ),age of initial sexual intercourse at or older than 22 years (OR =0.440,P=0.000) of age,as well as negative attitude toward multiple sexual parmers (OR=0.662,P=0.023 ) and legitimation for commercial sex (OR=0.612,P=0.007).Conclusion There were risk behaviors of AIDS/STDs in those infected fishmen.Casual and commercial sex were common high-risk behaviors.

OBJECTIVETo evaluate the effectiveness of open reduction and internal fixation and repair of palmar ligment in treating trans-scaphoid perilunate dislocation.

METHODSFrom June 1995 to June 2001,14 patients with trans-scaphoid perilunate dislocation were treated with open reduction and internal fixation and repair of palmar ligment. Among them,there were 13 males and 1 female,the ranging in age from 21 to 38 years,averaged 25.4 years. All patients were posterior dislocation and all operations were performed within 2 weeks after injury.

RESULTSAll patients were followed up from 24 to 60 months with an average of 28.3 months. Thirteen scaphoid fractures were primary healed and functions of wrist joint were good. Bone disunion was found in 1 case and part functions of wrist joint were limited. No found necrosis of lunate and scaphoid. According to clinical scoring system of Cooney, 9 case got excellent results, 3 good, 1 fair and 1 poor.

CONCLUSIONOpen reduction and internal fixation and repair of palmar ligament is effective in treating trans-scaphoid perilunate dislocation,which can early provide steady fixation for scaphoid,and profit to recover blood supply of lunatum and subterminal scaphoid.

Adult ; Early Diagnosis ; Female ; Humans ; Joint Dislocations ; diagnosis ; physiopathology ; surgery ; Lunate Bone ; injuries ; physiopathology ; Male ; Recovery of Function ; Scaphoid Bone ; injuries ; physiopathology ; Treatment Outcome ; Young Adult

Objective To investigate the application value of precise hepatectomy in huge hepatocellular carcinoma (HCC). Methods The objects of this prospective study were 110 patients with huge HCC undergoing precise hepatectomy in the First Afifliated Hospital of Sun Yat-sen University from May 2009 to May 2013. There were 92 males and 18 females with the age ranging from 26 to 75 years old and a median age of 48 years old. The range of tumor diameter was 10-21 cm. The informed consents of all patients were obtained and local ethical committee approval had been received. All patients underwent thin-slice computer tomography (CT) scan. The livers, tumors and vessels were three-dimensionally reconstructed using Myrian XP Liver surgery simulation software with the original data of thin-slice CT scan. The standard remnant liver volume (SRLV) was calculated, and the simulated operation was performed. Hepatectomy after conventional dissecting of the liver or hepatectomy with presetting hanging band in front of inferior vena cava through anterior approach were performed. The accordance rate of preoperative simulated operation plan and the actual performed intraoperative operation plan was observed. The difference between the predicted SRLV before operation and the actual measured SRLV was compared. The operative time, intraoperative blood loss, blood transfusion, length of hospital stay and complications were observed. The comparison of predicted SRLV and the actual measured SRLV was conducted using t test. Results The accordance rate of preoperative simulated operation plan and the actual intraoperative operation plan was 92.7%(102/110). The predicted SRLV before operation was (392±96) ml/m2, and the intraoperative actual measured SRLV was (406±71) ml/m2, where no significant difference was observed (t=-1.230, P>0.05). The median of operative time was 200 (150-375) min. The intraoperative blood loss was 500 (150-2 000) ml. The intraoperative blood transfusion was 300 (0-1 500) ml. The length of postoperative hospital stay was 11 (8-67) d. No perioperative death was observed. The incidence of postoperative complications was 20.0%(22/110). Eighteen cases suffered hepatic dysfunction and were cured by symptomatic treatments such as liver protection. Three cases suffered biliary leakage and were relieved by persistent catheter drainage. One case suffered abdominal bleeding and underwent the second surgery to stop bleeding. Conclusions Precise hepatectomy can help to better resect huge HCC, retain more residual liver volume, and reduce the incidence of postoperative hepatic dysfunction. It is an effective and safe method of treating huge HCC.

ObjectiveTo investigate the predictive value of preoperative indocyanine green retention rate at 15 min (ICGR15) combined with standard remnant liver volume (SRLV) to postoperative liver dysfunction after precise hepatectomy for huge hepatocellular carcinoma (HCC).MethodsA total of 110 patients with huge HCC undergoing precise hepatectomy at the First Afifliated Hospital of Sun Yat-sen University between May 2009 and May 2013 were enrolled in this prospective study. The informed consents of all patients were obtained and the local ethical committee approval had been received. Among the 110 patients, 92 were males and 18 were females with the age ranging from 26 to 75 years old and the median of 48 years old. The tumor size was from 10.1 to 20.5 cm. ICGR15 of all patients were detected and all underwent thin-slice computer tomography (CT) scan before hepatectomy. The livers, tumors and blood vessels of patients were three-dimensionally reconstructed by using the data of CT scan. The surgery was simulated and SRLV was calculated. All patients underwent precise hepatectomy. According to whether postoperative hepatic dysfunction developed, the patients were divided into two groups, the liver dysfunction group (n=18) and non-liver dysfunction group (n=92). The risk factors of postoperative liver dysfunction were analyzed by univariate analysis. The screened factors ICGR15 combined with SRLV were taken as diagnostic indicators for diagnostic tests to explore the best combination of sensitivity and specificity and regression equation for predicting postoperative liver dysfunction was calculated by logistic regression analysis.ResultsThe incidence of liver dysfunction for patients with HCC after precise hepatectomy was 16.4% (18/110). The occurrence of liver dysfunction was associated with the preoperative ICGR15 and SRLV (Z=2.805,t=4.365;P<0.05). When the preoperative ICGRl5 and SRLV taken as diagnostic indicators, the sensitivity was 0.78 and the speciifcity was 0.89. Its logistic linear regression equation was SRLV (ml/m2) = 1 104 × ICGR15 + 298.6. The regression equation may directly relfect the relationship between ICGR15 and SRLV and the regression line chart may better predict the occurrence of liver dysfunction after precise hepatectomy.Conclusion Preoperative ICGR15 combined with SRLV may efficiently predict the occurrence of postoperative liver dysfunction after precise hepatectomy for huge HCC.

Based on the character of the molecular structure, the prodrugs of phosphates and phosphonates were divided into two categories. The first is the drug which contained the phosphate group, introducing protected groups to increase lipophilicity and improve bioavailability. The other one is the drug which had no phosphate group, introducing the phosphate group into molecules to enhance the solubility, regulate the distribution coefficient and enhance the drug-like property. This review focuses on the application of phosphates and phosphonates in drug research and development based on improvement of physico-chemical property, drug safety and the pharmacokinetics.
Animals ; Biological Availability ; Drug Design ; Drug Stability ; Humans ; Molecular Structure ; Organophosphonates ; chemical synthesis ; chemistry ; pharmacokinetics ; Phosphates ; chemical synthesis ; chemistry ; pharmacokinetics ; Prodrugs ; chemical synthesis ; chemistry ; classification ; pharmacokinetics ; Solubility ; Structure-Activity Relationship ; Tissue Distribution