Objective To observe the effects of paclitaxel,mitomycin,5-FU and cisplatin on the proliferation of tongue carcinoma cells and to guide the reasonable using of chemotherapeutic drugs and avoids the side-effects.Methods The fresh tongue carcinoma tissues from surgery were collected and unicellular suspension were prepared.Then paclitaxel,mitomycin,5-FU and cisplatin were used to investigate the drug sensitivity on primary tongue carcinoma cells and a blank control group was set up.The inhibitory effects of chemotherapeutic drugs on the growth of tongue carcinoma cells and the cell cycle phases were observed by MTT colorimetry and flow cytometry.Results The inhibitory rates of paclitaxel,mitomycin and 5-FU on tongue carcinoma cell proliferation were 45.3%,37.3%,and 36.2%,respectively,and in control group it was 2.1%,the difference was significant(P

Objective To investigate the in vitro effect of multi glycosidorum triptery (MGT) on cytokine production by splenocytes of oxazolone (OXZ) induced colitis in murine model. Methods Six mg of OXZ (in 50% of ethanol) was administered in male SJL/J mice intrarectally to induce colitis and mice were sacrificed 3 days later. Isolated splenocytes were cultured for 24 hours in the presence of PMA and ionomycin, MGT of 0.1 mg/ml or 0.01 mg/ml was added to the culture medium of splenocytes. Production of IFN ? and interleukin 4 (IL 4) in the supernatant was measured by ELISA. Results The production of IFN ? was suppressed by both 0.01 mg/ml and 0.1 mg/ml of MGT [normal control ( 1.24 ? 0.13 ) pg/ml→(0.97?0.26) pg/ml→(0.87?0.18) pg/ml, P

Objective To evaluate the value of CEUS in dynamicly assessing the blood perfusion of hepatic alveolar echinococcosis (HAE) in rats.Methods The experimentally induced secondary HAE in totally 70 rats were studied at different time periods (gth week,28th week,and 50th week) with CEUS,and compared to pathology results.Results At the 9th week,55 HAE lesions (55/70,78.57％) presented hyperechoic and the rest of 15 HAE lesions (15/70,21.43％)presented mixed echogenicity.The single or multiple vesicular structures were found as pathological feature.At later stages (28th week and 50th week),the size of lesions increased compared to 9th week with more solid structures and the calcifications found in HAE lesions.Microscopically,the fibrous tissues surrounding the lesions gradually thickened and the microvascular accumulation were visible around the lesions.The HAE lesions at the 9th week showed the ring enhancement and central septa enhancement in CEUS.The HAE lesions at the 28th week and 50th week showed combinations of no enhancement,ring enhancement,and central septa enhancement in CEUS.The ratio of edge enhancement to maximum diameter of lesions decreased with the progression (P=0.02).Conclusion The ultrasonographic features in HAE lesions become more complicated with increasing calcifications and enlarged necrosis areas with the progression.The CEUS can reveal the dynamics of blood perfusion of HAE lesions at different stages.

Objective To investigate the effects of cytarabine(Ara-C) on expression of B7 molecules and immunogenicity of acute leukemia (AL) cells. Methods The expression of B7 molecules on fresh AL ceils and on the Ara-C exposed leukemia ceils was detected by FACS cytometer. B7 mRNA in Ara-C treated HL-60 cells were detected by reverse RT-PCR. The stimulation of proliferation of allogeneic PBMC by Ara-C treated HL-60 cells was detected by MTT method. Results B7-2 was weakly expressed in four and positive in three, whereas BT-1 was positive in only one of fourty AL patiens. Ara-C significantly enhanced B7 molecules expression on AL cells. Ara-C could induce higher expression of B7 mRNAs on HL-60 cells.Ara-C treated HL-60 cells could stimulate PBMC proliferation and promote their IFN -γ production.Conclusion Fresh AL cells express low level of B7 molecules. Ara-C enhances the B7 molecules expression on AL cells. The Ara-C treated leukemia cells can significantly stimulate the proliferation of allogeneic PBMC and induce their secretion of IFN-γ.

Objective: To evaluate the impact of anemia on prognosis of elder patients with acute coronary syndrome (ACS) after percutaneous coronary intervention (PCI).
Methods: A total of 908 consecutive ACS patients elder than 60 years of age with PCI in our hospital from 2010-06 to 2012-06 were studied. According to WHO deifnition of anemia (HB<12.0 g/dL in female and HB<13.0 g/dL in male), the patients were classiifed as Anemia group, n=283 and Non-anemia group, n=625. The patients were followed-up for 1 year. The basic clinical characteristics, incidences of mortality and major adverse cardiovascular and cerebravascular events (MACCE) were compared between 2 groups by cardiac death, myocardial re-infarction, worsening of cardiac function, target vessel revascularization, cerebral hemorrhage and cerebral infarction.
Results: There were 31%of patients suffering from anemia. Anemia group had more patients with the elder age, female gender, diabetes, hypertension, chronic kidney disease, decreased LVEF, more patients with 3 vessel-disease, and higher mortality at 1 year after PCI, higher rate of MACCE than those in Non-anemia group, all P<0.05. Multiple regression analysis indicated that anemia is the independent predictor for mortality in elder ACS patients at 1 year after PCI, P<0.05.
Conclusion: Anemia may increase the incidences of mortality and MACCE in elder ACS patients after PCI for a long-term.

Objective To establish a rapid method for detection of drug-resistance mutation in HBV, based on PCR-MALDI-TOF MS, and to explore the influential factors on this method. Methods One hundred blood serum samples, which were collected from chronic HBV patients with single drug-resistance or multiple drug-resistance of Lamivudin, Adefovi, Entecavir and Telbivudine, and 10 kinds of mutant HBV plasmids were analyzed using PCR-MALDI-TOF MS and confirmed by PCR-based sequencing. Results Of 100 samples detected, thirty-one samples were positive for drug-resistance and 69 samples were negative. The PCR-MALDI-TOF MS results of 94 samples were completely consistent with PCR-based sequencing. Six samples were inconsistent , of which three samples were positive by the two methods, but more mutation loci were detected by PCR-MALDI-TOF MS than sequencing. The consistent rate of two methods was 94%,detection sensitivity was up to 100 copies/μl, and the cut off value of detectable mutation level was 5%.Conclusion PCR-MALDI-TOF MS could be used for rapid and simple analysis of the drug resistance for the clinical application with features of high sensitivity and accuracy, high throughput and automation.

Abstract: Objective To construct a shuttle vector pHT315-AaCPR100A with two spore-producing-dependent promoters and the target gene AaCPR100A in Escherichia coli-Bacillus thuringiensis. Methods The forward promoter of Cry3A, named Pro-1 (+), was amplified by PCR using pSVP27A plasmid as the template, and the target gene AaCPR100A was amplified using Aedes aegypti RNA reverse conversion cDNA as the template. The plasmid pHT315 was linearized by digestion with Hind Ⅲ and Sal Ⅰ. The forward promoter and the target gene were inserted into the linearized vector pHT315 successively by in-fusion cloning according to the transcription direction. The synthesized plasmid containing the Cry3A reverse promoter sequence was used as the template, and the Pro-1 (-) reverse promoter was amplified by PCR. The intermediate vector containing the forward promoter and the target gene was linearized by EcoR I restriction enzyme, and the reverse promoter was inserted downstream of the target gene by in-fusion cloning in the direction of transcription. Results By agarose gel electrophoresis, the forward promoter, target gene AaCPR100A and reverse promoter bands were clear and of good quality, which could be used for in-fusion cloning experiments. The two spore-producing-dependent promoters and target gene fragments were connected by In-fusion cloning. The recombinant vector pHT315-AaCPR100A was verified by PCR. The forward promoter, target gene fragment and reverse promoter were successfully amplified in the recombinant vector. Nucleotide sequencing verified that the sequencing results of the bidirectional promoter sequence and the target gene sequence were basically consistent with the sequence alignment results, which met the requirements of the construction of vector elements and proved that the recombinant vector was successfully constructed. Conclusions Based on the above results, this study proves that the recombinant shuttle vector with two spore-producing-dependent promoters can be successfully constructed by in-fusion cloning technology, laying the foundation for the construction of engineered Bacillus thuringiensis expressing dsRNA of AaCPR100A.

Objective To explore the relationship of quality of life with optimisms and sense of coherence in adult kidney transplant recipients. Method A total of 295 kidney transplant recipients participated in the study by a self-designed general questionnaire, revised life orientation test (LOT-R), sense of coherence (SOC-13) and the MOS 36-item short form health survey (MOS SF-36). Results The mean score of mental health scale (PCS) was 47.02±7.30, which differed with different age, employment status and transplant vintage (P ＜0.01). The mean score of phyical health scale (MCS) was 46.87 ±11.14, which differed with education, economic burden and transplant vintage (P ＜0.05). PCS and MCS were positively correlated with the total score of sense of coherence (52.05％) and optimism (23.45％) (P＜0.001). Optimism played a partially mediating role in the relationship between sense of coherence and quality of life. Conclusions The quality of life of kidney transplant recipients needs to be improved, which was at a low level.Optimism (medium to high level) and sense of coherence (medium to low level) are influencing factors of the quality of life. Improving accessment of mental state of patients with kidney transplant receients, paying more atentent and support to their mental change can improve their optimism and sense of coheherce and then life quiality.

Objective To explore the feasibility and safety of radiofrequency ablation for difficult access liver cancer under percutaneous local anesthesia combined with contrast-enhanced ultrasonography.Methods 45 patients(62 lesions) in the experimental group were treated by percutaneous,local anesthesia combined with contrast-enhanced ultrasound and in some cases with artificial ascites assisted by radiofrequency ablation vs control group of 40 patients (54 lesions) receiving radiofrequency ablation guided by CT or ultrasound through laparoscopy or open surgery.The complications,and postoperative residual and recurrence rates were compared between the two groups.Results Of the all patients,4 cases suffered from severe complications.The pain scores and the blood loss were less significant in the experimental group.There was no significant difference in tumor residual rate between the two groups when evaluated on one month after the procedures,and in the recurrence rate after three and six months.Conclusion Radiofrequency ablation for difficult liver cancer by percutaneous local anesthesia combined with contrastenhanced ultrasonography is less traumatic and less of complications compared to traditional method with a similar tumor residual rate and recurrence rate.

OBJECTIVETo study the two metal catalysts Ag/Al2O3 and Cu/Al2O3 that interdict the transmission pathway for SARS and other respiratory infectious diseases.

METHODSTwo metal catalysts Ag/Al2O3 and Cu/Al2O3 were pressed into wafers. One hundred microL 10(6) TCID50/mL SARS-CoV, 100 microL 10(6) PFU/mL recombinant baculovirus expressing hamster's prion protein (haPrP) protein and roughly 10(6) E. coli were slowly dropped onto the surfaces of the catalyst wafers and exposed for 5 and 20 min, respectively. After eluted from the surfaces of wafers, the infectivity of viruses and propagation of bacteria were measured. The expression of PrP protein was determined by Western blot. The morphological changes of bacteria were observed by electronic microscopy.

RESULTSAfter exposure to the catalysts surfaces for 5 and 20 min, the infectivity of SARS-CoV in Vero cells and baculovirus in Sf9 cells dropped down to a very low and undetectable level, and no colony was detected using bacteria culture method. The expression of haPrP protein reduced to 21.8% in the preparation of Sf9 cells infected with recombinant baculovirus exposed for 5 min and was undetectable exposed for 20 min. Bacterial membranes seemed to be cracked and the cytoplasm seemed to be effluent from cell bodies.

CONCLUSIONExposures to the surfaces of Ag/Al2O3 and Cu/Al2O3 destroy the replication and propagation abilities of SARS-CoV, baculovirus and E. coli. Inactivation ability of metal catalysts needs to interact with air, utilizing oxygen molecules in air. Efficiently killing viruses and bacteria on the surfaces of the two metal catalysts has a promising potential for air-disinfection in hospitals, communities, and households.

Aluminum Oxide ; Animals ; Baculoviridae ; pathogenicity ; Catalysis ; Cercopithecus aethiops ; Copper ; Cricetinae ; Disinfection ; methods ; Escherichia coli ; pathogenicity ; Prions ; metabolism ; SARS Virus ; pathogenicity ; Silver ; Vero Cells