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@#[Abstract] Objective: To construct and verify the anti-tumor activity of chimeric antigen receptor (CAR) modified NK-92 cells (CAR-NK-92 cells) targeting prostate stem cell antigen (PSCA) in cervical cancer. Methods: Lentiviral vector expressing CAR targeting PSCA was constructed, and PSCA CAR-NK-92 cells were obtained by lentivirus transfection. The expression of PSCA in human cervical cancer cells was determined by Flow cytometry and Western blotting. The killing effect of PSCA CAR-NK-92 cells against cervical cancer cells was verified by co-incubation of effector and target cells in vitro, and the tumor inhibitory ability of PSCA CAR-NK-92 cells was verified with the nude mice xenograft model in vivo. Results: PSCA CAR-NK-92 cells were successfully constructed. PSCA was highly expressed in human cervical cancer Hela and MS751 cells (all P<0.01). In vitro co-incubation results showed that PSCA CAR-NK-92 cells could lyse PSCA+ cervical cancer transplanted tumor in a dose-dependent manner. In vivo anti-tumor data showed that PSCA CAR-NK-92 cells significantly inhibited the growth of cervical cancer cells compared with NK-92 cells transfected with vehicle vectors (P<0.01). In addition, PSCA CAR-NK-92 cells could effectively infiltrate tumor tissues and promote the secretion of anti-tumor cytokines TNF-α and IFN-γ (all P<0.01). Conclusion: The CAR-NK-92 targeting PSCA shows good anti-tumor effect on PSCA+ tumor cells both in vitro and in vivo, and has potential to be a therapeutic strategy for cervical cancer.
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Objective To describe and analyze the level and variation trend of mortality of female genital malignancies in China from 2004 to 2016, so as to provide scientific evidence for the formulation and implementation of cancer prevention and control measures.Methods The mortality data of cervical cancer, corpus cancer and ovarian cancer were selected from the mortality monitoring data of the national disease monitoring system, the crude mortality and standardized mortality rates were calculated respectively, the annual change trend was analyzed by Joinpoint software.Results From 2004 to 2016, the mortality rate of cervical cancer in Chinese women increased significantly. The mortality trend obviously accelerated after 2011(annual percent change, APC = 13.7%), and the mortality rate in rural areas was higher than that in urban areas. The mortality rate of corpus cancer was relatively stable, and showed a downward trend after 2013(APC=-23.5%). Ovarian cancer mortality rate slightly increased, but the death trend was not statistically significant.Conclusions From 2004 to 2016, the mortality of corpus cancer in Chinese women had improved, the mortality of cervical cancer was still relatively serious, and there were differences between urban and rural areas.
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Eighty percent of bacterial infections are related to the formation of bacterial biofilm. Compared with planktonic bacteria, bacterial biofilm is 10-1 000 times more resistant to antibiotics, which is the main cause of current bacterial drug resistance. A comprehensive understanding of the characteristics and resistance mechanisms of bacteria biofilm will help us treat the stubborn infections caused by the bacterial biofilm better and solve the problem of bacterial drug resistance. In this review, the composition and quorum sensing of bacterial biofilm, two major patterns of biofilm formation and drug resistance mechanisms were presented. Furthermore, representative compounds with anti-biofilm activity and compounds synergistic with antibiotics in anti-biofilm actions were introduced. Nano drug delivery strategies used for anti-biofilm in recent years as well as a novel drug delivery system-molecularly imprinted polymer was also introduced.
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Objective: To optimize the processing conditions of Maxing Antitussive and Antiasthmatic Grannule (MAAG). Methods: The influence of different excipients including lactose, soluble amylum, and dextrine, and usage amount of soluble amylum to hygroscopicity of powdered extract was investigated; Processing conditions were optimized by orthogonal test, flowability, and hygroscopicity were investigated. Taking forming rate, solubility, and absorption rate as indexes, the materials added prescription varieties, ratio, and optimum molding process were screened. Results: The particles sugar plus dextrin as excipients were superior to dextrin or sugar or soluble starch as excipient particles; The optimized conditions were obtained with: main drug-accessories (1:2), accessories for the dextrin-powdered sugar (1:1), with 80% ethanol as wetting agent which accounted for 14% of the main drug. Conclusion: The selected accessories in MAAG is reasonable and forming process is feasible. This research provides the basis for the establishment of forming technique and control of production environment of MAAG.
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<p><b>OBJECTIVE</b>To investigate the serum level of carboxy-terminal telopeptide of type I collagen (ICTP) and explore its correlation with MMP-2 and MMP-9 in patients with coronary artery disease (CHD).</p><p><b>METHODS</b>A total of 103 CHD patients treated in our hospital between October, 2013 and May, 2014 were enrolled, including 39 with stable angina pectoris (SAP), 39 with unstable angina (UA), and 25 with acute myocardial infarction (AMI), with 38 non-CHD volunteers as the control group. The serum levels of ICTP, MMP-2, and MMP-9 were detected in all the subjects using enzyme-linked immunosorbent assay (ELISA).</p><p><b>RESULTS</b>No significant difference in serum levels of MMP-2, MMP-9, or ICTP was found between the control and SAP groups or between UA and AMI groups (P>0.05), but the latter two groups had significantly higher serum levels of MMP-2, MMP-9, and ICTP than the former two groups (P<0.05). Serum ICTP level was found to negatively correlated with the fibrotic area and positively with the lipid component in the plaques (P<0.05). Regression analysis revealed significant positive correlations of serum ICTP with MMP-2 and MMP-9 (P<0.05).</p><p><b>CONCLUSION</b>An elevated serum ICTP level is indicative of the presence of unstable plaques in CHD patients. Serum ICTP is more strongly correlated with MMP-2 than with MMP-9, and can be used as a non-invasive marker for assessing vulnerable plaques in patients with acute coronary syndrome.</p>