AIM:To explore the effects of the combined use of human telomerase reverse transcriptase (hTERT) gene antisense oligodeoxynucleotide (ASODN) and cisplatin on apoptosis of HL-60 cells. METHODS:PCR-ELISA was used to determine telomerase activity in HL-60 cells untreated or treated with ASODN, the expression levels of hTERT protein were assayed by immunofluorescence using fluoresce isothiocyanate (FITC) label. Apoptosis was detected by DNA electrophoresis and flow cytomertric cell cycle analysis. RESULTS:The expression levels of hTERT protein and telomerase activity in HL-60 cells treated with ASODN were shown to decrease with time, the DNA fragments were obviously found and the percentage of apoptosis cells was significantly enhanced in HL-60 cells with the combined use of hTERT ASODN and cisplatin compared with the combined use of hTERT sense oligodeoxynucleotide and cisplatin or cisplatin alone, respectively. CONCLUSION:Inhibition of telomerase activity by hTERT ASODN increases the cisplatin-induced apoptosis of HL-60 cells.

AIM: To explore the effects of the combined use of human telomerase reverse transcriptase (hTERT) gene antisense oligodeoxynucleotide (ASODN) and cisplatin on apoptosis of HL-60 cells. METHODS: PCR-ELISA was used to determine telomerase activity in HL-60 cells untreated or treated with ASODN, the expression levels of hTERT protein were assayed by immunofluorescence using fluoresce isothiocyanate (FITC) label. Apoptosis was detected by DNA electrophoresis and flow cytomertric cell cycle analysis. RESULTS: The expression levels of hTERT protein and telomerase activity in HL-60 cells treated with ASODN were shown to decrease with time, the DNA fragments were obviously found and the percentage of apoptosis cells was significantly enhanced in HL-60 cells with the combined use of hTERT ASODN and cisplatin compared with the combined use of hTERT sense oligodeoxynucleotide and cisplatin or cisplatin alone, respectively. CONCLUSION: Inhibition of telomerase activity by hTERT ASODN increases the cisplatin-induced apoptosis of HL-60 cells.

Objective:To determine whether the bcl-2 antisense oligonucleotide (ASODN) can increase the sensitivity of NCI-H460 cell lines to docetaxel or radiation. Methods: Docetaxel in combination with bcl-2 ASODN or non-sense oligonucleotide (NSODN) was used to treat NCI-H460 cells, and then IC_~50 of docetaxel against NCI-H460 cells was determined with MTT method. In radiation group, NCI-H460 cells were divided into pure radiation, radiation plus bcl-2 ASODN, and radiation plus NSODN groups. The inhibition rates of cell growth were assayed by MTT, and the expression levels of Bcl-2 protein were assayed by immunofluorescence. Results: IC_~50 in bcl-2 ASODN plus docetaxel, pure docetaxel and NSODN plus docetaxel groups was (0.101?0.009) ?mol/L,(0.183?0.018)?mol/L, and (0.179?0.016)?mol/L, respectively. The differences between the first group and the latter 2 groups were significant (P

Objective　 To investigate the indication and timing of surgery for acute necrotizing pancreatitis.　 Methods　 82 cases of acute necrotizing pancreatitis were analyzed retrospectively. 10 cases were treated non-operatively. Early operation was performed on 44 cases, while 28 cases underwent surgery on late stage.　 Results　 The overall morbidity and mortality was 24% and 18%, respectively. All 10 patients in the non-operative group were cured with a morbidity of 10%. The morbidity and mortality in the early operation group was 14% and 11%, respectively, compared with 46% and 36% of those receiving surgery on late stage（P＜0.01, P＜0.05）. Among those in late surgery group, patients not complicating infection had significant lower morbidity and mortality rate than those suffering from severe infection or organ dysfunction（P＜0.01, P＜0.05）.　 Conclusions　 Early operation is necessary for some severe cases.In patients with severe pancreatic necrosis surgery should be performed before severe infection occurs.

Objective To evaluate the impact of sleep-disordered breathing(SDB)on the quality of life(QOL)in children with SDB and investigate the value of tonsillectomy and adenoidectomy in improving their QOL.Methods Questionnaire of disease-specific quality of life for children with obstructive sleep apnea with 18 items(OSA-18)was used to evaluate QOL in 168 children with SDB within four weeks before and six to 12 months after surgical operation,and correlation between OSA-18 scores to apnea hypopnea index(AHI)and minimum oxygen saturation(MiO2)in 62 of them was evaluated with polysomnography(PSG),with 50 healthy children without snoring as controls.Results Overall scores of OSA-18 in children of SDB group before surgical operation were significantly higher than those in children of control group(t=15.12,P＜0.01).and QOL was seriously affected in 30.4 percent of the children with SDB.Scores of OSA-18 correlated to AHI and MiO2 before surgical operation.QOL was improved significantly in 73.8 percent of children with SDB after tonsillectomy and adenoidectomy.Conclusions SDB has obvious impact on pediatric QOL,which can be improved by tonsillectomy and adenoidectomy.There exists significant correlation between OSA-18 scores and objective indicators of PSG,and the former can be used as clinical diagnosis for SDB in children and as quantitative evaluation for the effectiveness of intervention.

AIM: To explore the effect of human telomerase reverse transcriptase (hTERT) gene antisense oligodeoxynucleotide (ASODN) on chemotherapeutic durges-induced apoptosis in CEM cells. METHODS: Cell viability was determined by trypan blue dye exclusion assay. Apoptosis was detected by morphological observation and flow cytomertric cell cycle analysis. RESULTS: The survival rates of CEM cells cultured with daunorubicin, vincristin and (etoposide) respectively were similar with that cultured with those chemotherapic durgs plus hTERT ASODN. The survival rates of CEM cells cultured with cis-diamminedichicloroplatinum (DDP) added 24 h later were higher than that cultured with hTERT ASODN and DDP added 24 h later. The survival rates of CEM cells cultured with DDP were similar with that cultured with hTERT SOND and DDP. In morphological observation of apoptotic cells using Giemsa staining, cells treated with DDP or DDP combined with hTERT ASODN ro SODN at 48 h, displayed classic apoptotic changes. Apoptosis rates of CEM cells treated with DDP for 48 h after 24 h of exposure to ASODN significantly increased. There was significant difference in the percentage of apoptotic cells of CEM cells between hTERT ASODN plus DDP and SODN plus DDP or DDP alone, respectively. CONCLUSION: hTERT ASODN enhances DDP-induced apoptosis of CEM cells.

AIM: To investigate whether the bcl-2 antisense oligonucleotide increases the sensitivity of HL60 and K562 cell lines to daunorubicin. METHODS: IC50 for HL60 and K562 was determined with MTT method, the expression levels of Bcl-2 protein were assayed by immunofluorescence using fluoresce isothiocyanate labeling. In addition, apoptosis was detected by morphological observation and flow cytometric analysis of DNA fragmentation. RESULTS: It was found that the two oligonucleotides directed against the coding region and the translation initiation of bcl-2 mRNA, combined respectively with daunorubicin, inhibited expression of bcl-2 protein, increased apoptosis in HL60 and K562 cells, and decreased IC50 of daunorubicin significantly ( P

Objective Investigate the changes of adhesion molecule on myocardium in patients during mitral valve replacement(MVR) operation on beating heart. Methods Patients were divided into two groups. There were 16 patients in control group (aorta crossclamped and middle hypothermic) and 14 patients in experimental group (aorta unclamped and moderate hypothermic). Samples of right atrial were obtained before CPB, 30 min after CPB. Immunohistochemistry were employed to dectect the expression of ICAM-1 and VCAM-1 on cardiac myocytes. Results Comparing with those before CPB, ICAM-1 and VCAM-1 on cardiac myocytes and myocardial vascular endothelial cells increase significantly in both groups(P

Objective To study the value of hysteroscopy in the diagnosis and treatment of infertility women caused by intrauterine adhesions. Methods 32 cases of infertility caused by intrauterine adhesions received hysteroscopic diagnosis, classification and treatment. The postoperative pregnancy rate was observed. Results The hysteroscopic diagnosis and score of infertility caused by intrauterine adhesions included 19 cases of gradeⅠ, 11 cases of gradeⅡ, 2 cases of grade Ⅲ. After hysteroscopic surgery and the related treatment, the postoperative menorrhea improved rate was 65.7%(21/32), and pregnancy rate was 62.5%(20/32). Conclusions Hysteroscopy is accurate , safe ,effective and may be used as the first choice in the diagnosis and treatment of infertility caused by intrauterine adhesions.

Objective To compare bispectral index (BIS) with narcotrend index (NI) during propofol-remifentanil anesthesia administered by target-controlled infusion (TCI).Methods Ten ASA Ⅰ or Ⅱ pafients aged 18-56 yr weighing 52-67kg undergoing abdominal surgery lasting>1h were included in this study.BIS and NI were monitored simultaneously.Anesthesia was induced with TCI of propofol with target plasma concentration (Cp) of 3～4μg/ml and remifentanil (Cp 3-4ng/ml).Tracheal intubation was facilitated with cis-atracurium 0.3 mg/kg.The patients were mechanically ventilated.PETCO2 was maintained between 30-35 mm Hg.Anesthesia was maintained with TCI of propofol and remifentanil by the anesthesiologist bhnded to BIS and NI values.according to hemedynamic parameters.BIS and narcotrend values were recorded every minute and compared by another anesthesiologist.All data were compared by Bland-Altman analysis and with Kappa coefficient for agreement.The correlation between BIS and NI was tested by Spearman correlation analysis.The number of error ofjudgement (Type Ⅰ was defined as BIS<40 and NI>62;Type Ⅱ was defined as BIS>60 and NI<20)Was counted.Results The correlation and agreement between BIS and NI during maintenance of propofol-remifentanil anesthesia administered by TCI showed good consistency.Conclusion Both NI and BIS Can help anesthesiologist control the depth of anesthesia during TCI of propofol-remifentanil.