Matrix metalloproteinase (MMP)plays an important role in the degradation of extracellular matrix components,which is crucial for tumor growth,invasion and metastasis.As one with the largest relative molecular mass in MMP family,MMP-9 takes part in the generation and progression of colorectal cancer. Research shows that MMP-9 can be used for the early diagnosis of colorectal cancer.The expression levels of MMP-9 in tissue and plasma are negatively correlated with prognosis of the postoperative patients with colorectal cancer.In addition,targeted therapy drugs will be designed on the basis of MMP-9 expression increased in colorectal cancer.

Animals ; Hexanes ; blood ; toxicity ; Kidney ; drug effects ; pathology ; Liver ; drug effects ; pathology ; Lung ; drug effects ; pathology ; Male ; Rats ; Rats, Sprague-Dawley

Air Pollution, Indoor ; statistics & numerical data ; Hong Kong ; Noise, Occupational ; statistics & numerical data ; Restaurants ; statistics & numerical data ; Temperature

Background and purpose:Inlfammatory bowel diseases (IBD) are a group of chronic intestinal diseases, including ulcerative colitis (UC) and Crohn’s disease (CD). This study identified differentially expressed miRNAs in UC, CD and colitis-associated colorectal cancers (CAC) to explore their potential as novel molecular biomarkers. Methods:Tissue samples were taken from 13 UC patients, 3 CD patients, 12 CAC patients, and 8 age-and gender-matched healthy controls. The miRNA expressions were detected by real-time fluorescent quantitative polymerase chain reaction (RTFQ-PCR) assay. Known targets of deregulated miRNAs were utilized using miRWalk 2.0 database, and subsequent bioinformatics analysis of these target genes was performed by DAVID software (GO-analysis, KEGG-analysis and BIOCARTA-analysis). Results:The data showed that miR-146a, miR-27a, miR-29a, miR-20a and miR-21 were upregulated in UC, CD and CAC tissues compared with normal control. Moreover, the target genes of these miRNAs were enriched in several key signal transduction pathways including cancer-related pathway and immu-nity-associated pathway. Conclusion:miR-146a, miR-27a, miR-29a, miR-20a and miR-21 may play important roles in the switching from IBD to CAC.

BACKGROUND: Using color Doppler ultrasonography, renal graft size, appearance, structure, and blood flow distribution can be observed. Through the use of blood flow display technique, blood flow perfusion of renal graft can be accurately observed to assist diagnosis and differential diagnosis of complications following renal transplantation. OBJECTIVE: To observe the hemodynamic characteristics during different periods of acute renal transplant rejection, summarize its specific manifestations through analyzing different reaction of two dimensional and color Doppler flow imaging (CDFI) during renal transplantation in order to get valuable index on acute rejection of renal transplantation.DESIGN, TIME AND SETTING: Comparative observation was performed at the Jinan University and First Hospital of Shenzhen University between January 2003 and January 2007.PARTICIPANTS: A total of 299 patients undergoing renal transplantation were divided into normal allograft group (n=236) and acute rejection group (n=63) according to renal allograft function.METHODS: The systolic peak flow rate, end-diastolic flow rate, mean flow rate, pulsatility index and resistance index of main renal artery and arcuate artery in patients of two groups were compared. MAIN OUTCOME MEASURES: Renal allograft arterial inner diameter and hemodynamics of two groups.RESULTS: Compared with normal allograft group, the blood flow perfusion was reduced at acute rejection, which could not reach cortex margin, blood velocity was decreased at the diastolic phase, pulsatility index and resistance index were increased (P < 0.05). CONCLUSION: Color Doppler ultrasound, as a convenient, economical and noninvasive technique, provides the reliable evidences for the renal artery pulsatility index and resistance index in clinic, and also is valuable for the acute rejection early diagnosis of renal allograft.

OBJECTIVETo investigate the result of hip arthroplasty for failed internal fixation of femoral neck fractures.

METHODSFrom June 2007 to January 2014, 29 cases who underwent hip arthroplasty for failed of internal fixation of femoral neck fractures were reviewed. There were 12 males and 17 females. The mean age was 60.3 years (ranged 43 to 83 years) at the time of the fracture. Left hip was in 16 cases, right hip was in 13 cases. The average interval from fracture to arthroplasty was 23.3 months (ranged, 3 to 48 months).

RESULTSAll of 29 cases were performed total hip arthroplasty. There were 20 cases of cementless cup,7 cases of cementless cup with bone graft, 2 cases of cemented cup with bone graft; 13 cases of cementless stem, 16 cases of cemented stem. There were no complications occurred such as intraoperative fracture of the greater trochanter. The average operative time was (115 ± 38) minutes,the mean intraoperative blood loss was (420 ± 175) ml, the average postoperative drainage volume (240 ± 119) ml, intraoperative blood transfusion was (200 ± 220) ml, intraoperative fluid volume was (2,200 ± 400) ml, the average postoperative blood transfusion was (300 ± 200) ml. There was 1 case get postoperative dislocation. All patients were followed up for 14.7 months in average (ranged, 5 to 24 months). There was no revision for mechanical failure. Harris Hip Score significantly was improved from 51.1 ± 7.5 before the conversion to 88.5 ± 6.4 points at the final follow-up.

CONCLUSIONThe effect of the hip replacement for patients with failed internal fixation of femoral neck fractures was confirmed. This method can shorten the time on the bed and reduce the complications. It benefits the patients earlier functional recovery, but it must control operation indication. The long term efficacy is necessary to further observation.

Adult ; Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Hip ; methods ; Female ; Femoral Neck Fractures ; surgery ; Fracture Fixation, Internal ; Humans ; Male ; Middle Aged ; Treatment Failure

OBJECTIVETo observe the pathological changes in ovary or testis of the SD rats after n-hexane inhalation, and to investigate the effects of n-hexane to sexual glands.

METHODSForty-eight adult healthy rats were selected and randomizedly divided into four groups control group and three n-hexane groups (1, 3 and 7 d) six rats for each group. After inhalation, SD rats were killed and n-hexane concentration of blood from celiac artery were detected. Super-oxide dismutase (SOD) glutathione peroxidase (GSH-Px) malondialdehyde (MDA) glutathione (GSH) were measured by photometry, and organ coefficients were calculated. The ovary or testis were embedded with paraffin, sliced, stained by HE method and observed using microscope.

RESULTSAs the time of n-Hexane effect increased, the activities of SOD, GSH-Px and GSH were decreased, but the content of MDA was increased, especially in the 7 d group (P < 0.01).

CONCLUSIONSn-hexane can induce a series of damages in ovary or testis of SD rats, and lipid-pre-oxidation may be one of the effect process.

Administration, Inhalation ; Animals ; Female ; Hexanes ; toxicity ; Male ; Ovary ; drug effects ; metabolism ; pathology ; Rats ; Rats, Sprague-Dawley ; Testis ; drug effects ; metabolism ; pathology

Objective　To investigate the feasibility of applying transvescal approach laparoendoscopic single-site radical prostatectomy (TVSSLRP) and assess the oncological and functional outcomes.Methods　Eight patients with clinically localized prostate cancer (PCa) of low risk underwent TVSSLRP.Demographic data were accrued including patient age,body mass index (BMI),preoperative PSA level,the International Index of Erectile Function 5,biopsy Gleason score,clinical TNM stage and D'Amico risk classification.One surgeon performed all TVSSLRP procedures.A homemade triple-port was introduced percutaneouly into the bladder to establish pneumovesicum through a 4 cm incision.The major steps of the surgery were described as follows:initial incision was made along posterior margin of the bladder neck to expose bilateral vas deference and spermatic vesicle.After opening Denonvilliers' fascia and extending the space to lateral prostatic pedicles,an intra-fascial nerve sparing procedure was performed.The puboprastatic ligaments were then separated close to the prostate surface and the dorsal vein complex was cautiously swept off.Subsequently,careful apical dissection and urethral transection was sequentially conducted. To reduce the tension of vesico-urethral anastomosis,3 additional incisions parallel to vesio-urethral margin were created and a novel tension - reduced V-LocTM barbed polydioxanone sutures was used.　Results　All the operations were successfully performed and there was no conversion to standard laparoscopic approach or open surgery.The total operative time range was 75 - 180 min with mean time of 125 min.The blood loss was 85 -450 ml with mean 140 ml and no blood transfusion was required.The catheter was removed after a mean (range) of 14 (9 -16) days.No intra-operative complications occurred. No patient had positive surgical margins.The mean (range) hospital stay was 17 (13 -25) days after surgery. All the cases were continent after removal of the catheter.No cases demonstrated vesico-urethral stricture and biochemical recurrence on 12 - 18 months follow up postoperatively.　Conclusions　TVSSLRP is technically feasible for cases with organ-confined prostate cancer with good oncological and functional results.

Objective To evaluate anti-HEV IgG and IgM diagnostic kits with sera from convalescent hepatitis E patients and to establish the quantification method of detecting anti-HEV lgG.Methods Detect 42 convalescent serum samples of over 6 months after onset of hepatitis E patients from Jiangsu province with anti-HEV IgM and IgG diagnostic kits. Select and mix the anti-HEV IgG positive sera which were confirmed by Western blot with ORF2 and ORF3 antigen. The mixed serum was calibrated with a WHO anti-HEV Ig standard. A series quantitative linear standard was made for quantitative detection of anti-HEV IgG in hepatitis E vaccine clinical trials phase Ⅲ. Results The positive rates of the anti-HEV IgG di-agnose kits of G, K, MP, Wantai were 71.4%, 78.6%, 92.9% and 100% respectively. The positive rates of G was lower than that of MP (χ~2 = 5.19, P<0.05) and obviously lower than Wantai (χ~2 = 11.76,P<0.01). The positive rates of K was also obviously lower than that of Wantai (χ~2 =7.96, P <0.01).The positive rates of the anti-HEV IgM diagnose kits of MP, G, X, Wantai, K were 21.4%, 7.1%,21.4%, 64.3%, 78.6% respectively. The positive rate of both K and Wantai were obviously higher than that of MP(χ~2 = 15.75 ,P<0.01 ; X2 = 27.43 ,P< 0.01). With the Western blot confirmation test, 30 and 18 sera were reactive to ORF2 and ORF3 antigen separately. The anti-HEV IgG concentration of HEV-D01 mixed by 13 samples was 57.94 U/ml by the calibration. Prepare seven 1.5-fold dilution series of quantita-tive linear standard for HEV vaccine clinical trials phase Ⅲ, concentration range from 0.077 to 0.877 U/ml. The quantitive values of high, medium and low concentrations quality control samples lay in the range of average ± 2s, and the CV of quantitative values were 16%, 16%, 12% respectively. Conclusion The quality of different anti-HEY IgM and IgG diagnose kits were different. This study had set up a set of anti-HEV IgG linear quantitative standard, which fit for detecting anti-HEV IgG antibodies quantitatively in HEVvaccine clinical trial phase Ⅲ.

Objective To investigate the clinical effect of IFNα combined with mannan peptide in treatment of patients with HBeAg-positive chronic hepatitis B ( CHB ). Methods Eighty HBeAg-positive CHB patients with HBV DNA quantity ranging from 10 to 10 eopies/mL were enrolled and randomized into the treatment group and the control group ( n = 40 for each ). Patients in treatment group were given daily subcutaneous injection of IFNα-2b 5,000,000 U for 52 weeks, and received mannan peptide 10 mg per intravenous injection or 2. 5 mg per intramuscular injection for a total of 2 to 3 treatment courses (12 weeks for each). The control group received only IFNα-2b treatment. Liver function, serum markers of hepatitis B, HBV DNA quantity and blood tests were performed before the treatment and at 2, 4, 8, 16, 26 and 52-week during the treatment; and the adverse effects were recorded. Results The rates for ALT normalization, negative HBsAg, negative HBeAg, HBeAg seroconversion and negative HBV DNA were 91. 8% , 17. 5% , 52. 5% , 27. 5 % and 47. 5% at 52nd week in the treatment group, while those in the control group were 80. 0% , 12. 5% , 30. 0% , 10. 0 % and 25. 0% , respectively. There were significant differences in HBeAg-negative, HBeAg-seroeonversion and HBV DNA-negative rates between two groups (χ2 = 4. 178, 4.021 and 4.381, P < 0. 05 ) , and these indexes in the treatment group were increased to 57. 5% , 30. 0% and 50. 0 respectively at 52nd week after drug withdraw. White blood cells began to be elevated at 4th week and were restored to the normal levels at 8th week in the treatment group, while the count in the control was lower than the normal value even at 52nd week of the treatment with the average of (3.45±1. 18)×109/L. Conclusion Alpha-interferon combined with mannan peptide therapy is effective for patients with HBeAg-positive CHB, which may restore the declined peripheral WBC counts induced by interferon and improve the compliance.