0.05);the IC_(50) values of DDP to A549 and A549/DDP were 1.06 ?g/ml and 8.06 ?g/ml,respectively(P

Objective To study the killing effect of hypocrellins B-photodynamic therapy (HB-PDT) for lung cancer cell line A549, to compare with that of hematoporphyrin derivative-photodynamic therapy (HpD -PDT), in order to define the superiority of HB-PDT in the therapy of lung cancer. Methods Lung cancer cell line A549 was used in the study. The cells were incubated in vitro with HB or HpD dissolved in DMEM in different concentrations, and then irradiated by copper vapor laser with mixed wavelength light under saturated light dose. Cell survival rate was respectively measured by MTT assay after 24 hours' incubation. According to cell survival curves after being cultured with different photosensitizers in different concentrations, the equation of each cell survival curve was plotted. Finally IC 50 (50% inhibition concentration) of each photosensitizer was derived. Results The results showed that HB-PDT had a strong killing effect on lung cancer cell. The IC 50 of HB was 33.82ng/ml for lung cancer cell, while the IC 50 of HpD was 1 316.88ng/ml, which was 38.94 fold of that of HB. Conclusions HB was a more effective photosensitizer than the photosensitizer HpD. HB-PDT had strong photodynamic killing effect on lung cancer cell line.

Objective To investigate the clinical effect of tiotropium bromide combined with Seretide in treatment of moderate to severe chronic obstructive pulmonary disease( COPD) patients. Methods From Jan. 2012 to Oct. 2013,76 severe COPD were selected as our subjects and they were randomly divided into the control group(38 cases)and research group(38 cases). Patients in control group were used Seretide(1 time both at morning and night,the does was 50 μg/ 500 μg),and in research group were given tiotropium bromide with thiophene beside Seretide(1 time every day). The two groups were received routine treatment,including anti infection,cough and asthma,according to the change of illness. The pulmonary function,blood gas index, respiratory symptoms and 6 minutes walking distance(6 MWD)were recorded. Results Forced expiratory volume in one second( FEV1),forced vital capacity( FCV),FEV1 / FCV of patients in research group after ftreatment were(2. 22 ± 0. 48)L,(3. 28 ± 0. 32)L,(66. 23 ± 9. 22)% respectively,higher than those in the control group,and the differences were significant((1. 78 ± 0. 35)L,(2. 85 ± 0. 47)L,(56. 83 ± 7. 85)% ;t= 5. 39,4. 66,4. 78;P < 0. 01). Partial pressure oxygen(PaO2 )of patients in research group after treatment was (72. 83 ± 5. 28)mmHg,significantly higher than that of control group((65. 36 ± 3. 22)mmHg). However, partial pressure of carbon dioxide( PaCO2 )was(43. 28 ± 3. 52)mmHg,significantly lower than the control group((48. 76 ± 2. 85)mmHg;t = 7. 44,7. 45,P < 0. 01). Dyspnea( MMRC)score in research group was (1. 38 ± 0. 32),lower than the control group(1. 76 ± 0. 35),and 6 MWD was(428. 36 ± 32. 85)m,higher than that of control group((398. 65 ± 28. 38)m;t = 4. 93,4. 21,P < 0. 01). Conclusion The treatment plan of tiotropium bromide combine with Seretide on moderate and severe COPD patients is proved with the better clinical effect and it can improve the partial pressure of oxygen and then promote repair mechanism of lung injury as well as promote the quality of life of patients with ascension.

AIM:To investigate the effects of progranulin (PGRN) on the proliferation, apoptosis and inflammatory responses in lipopolysaccharide (LPS)-induced human alveolar epithelial A549 cells and HPAEpiC cells.METHODS:The cells were divided into 4 groups:control group (the normal cultured cells), LPS group [the cells were treated with LPS (10 mg/L)], PGRN+LPS group (the cells were transfected with pcDNA3.1-PGRN plasmids and then treated with LPS), and pcDNA3.1+LPS group (the cells were transfected with pcDNA3.1-EGFP plasmids and then treated with LPS).The cell viability was measured by MTT assay, cell proliferation was measured by BrdU incorporation assay, and cell apoptosis was analyzed by flow cytometry.The expression of PGRN at mRNA and protein levels was detected by RT-qPCR and Western blot.The protein levels of caspase-3, Bcl-2, Bax, IL-1β, IL-6, TNF-α, p65 and p-IκB-α were determined by Western blot.RESULTS:Compared with control group, the cell proliferation rate was decreased (P<0.05), and the apoptotic rate was increased (P<0.05) in LPS group.The protein levels of caspase-3 and Bax were significantly up-regulated (P<0.05), and the expression of Bcl-2 was down-regulated (P<0.05).The protein levels of IL-1β, IL-6 and TNF-α were significantly up-regulated (P<0.05), and the protein levels of p65 and p-IκB-α were enhanced (P<0.05).Compared with LPS group, the cell proliferation rate was increased (P<0.05), and the apoptotic rate was decreased (P<0.05) in PGRN+LPS group.The protein levels of caspase-3 and Bax were significantly down-regulated (P<0.05), and the expression of Bcl-2 was up-regulated (P<0.05).The protein levels of IL-1β, IL-6 and TNF-α were significantly down-regulated (P<0.05), and the protein levels of p65 and p-IκB-α were decreased (P<0.05).CONCLUSION:PGRN over-expression may alleviate LPS-induced abnormal proliferation, apoptosis and inflammatory cytokine production in the A549 cells and HPAEpiC cells, which may be associated with the regulation of NF-κB signaling pathway.

The mathematical models for simulation of cardiac sodium, potassium and calcium channel kinetics courses and currents were developed to simulate the properties of ionic currents and channel dynamic courses. With modifications of these models, it is possible to make them integrated for simulating the whole process of action potential, thus additional discussion on ionic mechanism could provide a theoretical foundation for further animal experiments and clinical applications.
Action Potentials ; Algorithms ; Calcium Channels ; physiology ; Computer Simulation ; Ion Channels ; physiology ; Membrane Potentials ; Models, Cardiovascular ; Myocytes, Cardiac ; physiology ; Potassium Channels ; physiology ; Sodium Channels ; physiology

ObjectiveTo explore the relationship between circulating tumor cells(CTCs) in the peripheral blood of patients with esophageal squamous cell carcinoma(ESCC) and the physiopathological characteristics of esophageal neoplasms.MethodsUsing negative selection system,we depleted red blood cells(RBCs) in red blood cell lysis buffer,depleted white blood cells (WBCs) with Miltenyi magnetic beads and enriched the rare cells from ESCC patients'peripheral blood.Immunofluorence staining (IF) was adopted to identify CTCs.ResultsCirculating tumor cells in the peripheral blood of patients with esophageal squamous cell carcinoma was closely related to cell differentiation grade,the invasion of primary cancer,lymph node status,P-TNM stages,and was rarely related to the sex,age or the location of tumor.ConclusionThe results suggest that circulating tumor cells in the peripheral blood of patients with esophageal squamous cell carcinoma may express the development of esophageal cancer and may be served as a tumor marker to evaluate the biological behavior of esophageal cancer.

BACKGROUNDPost-operative adjuvant chemotherapy in non-small cell lung can- cer (NSCLC) has been a highlight around the world. The aim of this study is to investigate the efficacy of adjuvant chemotherapy on the survival of patients with NSCLC after complete resection.

METHODSFrom June 2000 to December 2003, 64 patients with stage IB-IIIA NSCLC were divided into the chemotherapy group, who accepted adjuvant chemotherapy with navelbine+cisplatin (NP) or taxol+carboplatin (TP), and the observation group, who did not accept adjuvant chemotherapy after operation. The 1-, 2-, 3- and 4-year survival rate (SR), median survival time (MST) and disease-free time (DFT) were analyzed by Kaplan-Meier method.

RESULTSThe 1-, 2-, 3- and 4-year cumulated SR in the chemotherapy group was 93.9%, 84.6%, 71.4% and 58.4%, and 93.6%, 83.1%, 63.5% and 43.1% in the observation group respectively. There were statistically significant differences in both the 3- and 4-year survival between the two groups (P < 0.05). The MST was 52 months in the chemotherapy group and 47 months in the observation group respectively (P < 0.05), and the DFT was 19 months and 16 months respectively (P < 0.05).

CONCLUSIONSThe cisplatin- or carboplatin-based adjuvant chemotherapy can improve the survival of NSCLC patients after complete resection.

BACKGROUNDTo evaluate the incidence of multiple primary malignancies combined with lung and other organs and their relationship.

METHODSAll patients who consecutively treated for lung cancer from December 1964 to December 1992, were retrospectively analyzed regarding the recurrence of a synchronous primary tumor elsewhere in the body.

RESULTSOf total 1019 patients reviewed, 21 (2.1%) had associated carcinoma of other organs. In these 21 patients, the incidence of associated aerodigestive tract cancer was 71.4% (15/21) and that of other organs was 28.6% (6/21). Five patients had simultaneous cancer with the lung cancer and 16 had metachronous cancer.

CONCLUSIONSMultiple primary tumors in patients with carcinoma of the lungs is not a rare phenomenon. Surveillance programs for detection of second primary tumors should focus on these patients.

BACKGROUNDChemotherapy is one of the important treatment methods for advanced non-small cell lung cancer (NSCLC). The aim of this study is to evaluate the efficacy of docetaxel combined with carboplatin in treatment of advanced NSCLC.

METHODSSixty-four stage IIIB/IV NSCLC patients were treated with docetaxel (75 mg/m² intravenously, on day 1) and carboplatin (AUC=5 intravenously, on day 2).

RESULTSThe overall response rate (RR) was 42.6%, median survival time (MST) was 14 months, and 1-year survival rate was 45.23%. In initial treatment group, 1-year survial rate was 48.84% and MST was 14 months, and 37.89% and 12 months respectively in retreatment group (P=0.0233). The 1-year survial rate and MST of stage IIIB patients were 44.86% and 15 months, and 39.75% and 12 months respectively in stage IV patients (P=0.0354). There was no significant difference in efficacy between squamous cell carcinoma and adenocarcinoma patients. The major adverse effects were granulopenia, fatigue, nausea, vomiting and alopecia.

CONCLUSIONSThe combination of docetaxel and carboplatin has a high response rate and tolerable side effects in treatment of advanced NSCLC, which can be adopted as both the first-line and second-line treatment.

This study was aimed to identify pET21b-HPV16E2/BL21(DE3) strain and to optimize the expression of human papillomavirus type 16 (HPV16) E2 protein by orthogonal analysis. Four influence factors on two levels were selected to increase the target protein quantity. The four factors were induction time, induction temperature, inductor concentration and cell density. The quantity of HPV16 E2 protein was used as the evaluation parameter. Induced by IPTG, HPV16 E2 protein was analyzed by SDS-PAGE and Western Blot. Target protein was analyzed by GIS imaging system to quantify the protein level. SPSS13. 0 software was applied to analyze the result. Data showed that the expression strain pET211rHPV16 E2/BL21(DE3) was identified correctly. HPV16 E2 protein expressed mainly at insoluble form. The 42KD protein band was identified by SDS-PAGE and Western blot. Orthogonal test was applied on influence factor analysis and expression optimization successfully. Main influence factors were inductor concentration and induction temperature. The optimimum condition of maximum expression quantity was 37 degrees C, 7h, 1.0 mmol/L IPTG and OD600 1.0. In this experiment, orthogonal test could not only be used to analyze the influential factors and promote the target protein expression, but also be used to provide a better experiment method for molecular biological study.
DNA-Binding Proteins ; biosynthesis ; genetics ; Genetic Vectors ; genetics ; Human papillomavirus 16 ; metabolism ; Humans ; Oncogene Proteins, Viral ; biosynthesis ; genetics ; Papillomavirus Infections ; virology ; Recombinant Proteins ; biosynthesis ; genetics