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Zhao ZP, Zheng K, Li HR, Zeng CH, Zhong S, Ng SW, Zheng Y, Chen Y. Structure variation and luminescence of 3D, 2D and 1D lanthanide coordination polymers with 1,3-adamantanediacetic acid. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.06.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zeng CH, Zheng K, Li HR, Zhao ZP, Zhong S, Jiang YF. Structural data of structure variation and luminescence of 3D, 2D and 1D lanthanide coordination polymers with 1,3-adamantanediacetic acid. Data Brief 2018; 20:1453-1461. [PMID: 30258949 PMCID: PMC6153354 DOI: 10.1016/j.dib.2018.08.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 08/24/2018] [Indexed: 11/30/2022] Open
Abstract
In this data article, we report the structure, Fourier transform infrared spectroscopy(FT-IR), powder X-ray diffraction (PARD), luminescence decay, thermogravimetric analysis (TGA) and UV–vis data of three series Ln-MOFs. Detailed structure and luminescence properties were discussed in our previous study (Zhao et al., 2018) [1]. The data includes the structure patterns of ligand H2ADA, FT-IR, PXRD and thermostability of Ln-MOFs in the air, detailed structure information for these structures are listed in Table 1, Table 2, Table 3, Table 4, Table 5, Table 6, Table 7.
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Zeng C, Zheng K, Wang XZ, Li HR, Zhao ZP, Zhong S. Detailed structure information a highly thermostable Tb-cluster that based on a prodrug ligand of 2,4,5-trifluoro-3-methoxybenzoic acid. Data Brief 2018; 20:1244-1251. [PMID: 30238034 PMCID: PMC6143725 DOI: 10.1016/j.dib.2018.08.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/24/2018] [Indexed: 11/13/2022] Open
Abstract
In this brief data article, we present the precise structural information, PARD data and thermographic analysis of the Tb-cluster. Detailed structure, luminescence and detecting properties were discussed in our previous study (Zhao et al., 2017) [1]. The data includes the coordination modes of ligand, PXRD patterns of these Ln-MOFs, thermostability, detailed bond lengths and bond angles of the Tb-cluster.
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Zhong S, Wu Y, Yan X, Tang J, Zhao J. Metformin use and survival of lung cancer patients: Meta-analysis findings. Indian J Cancer 2018; 54:63-67. [PMID: 29199666 DOI: 10.4103/0019-509x.219582] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Previous studies on the association between metformin use and lung cancer survival have yielded mixed results. We aimed to perform a metaanalysis to assess the association with all available studies. Relevant studies were identified by searching PubMed and EMBASE to July 2016. We calculated the summary hazard ratios (HRs) and 95% confidence intervals (CIs) using randomeffects models. Twelve cohort studies involving 124,533 participants were included in this study. The results showed that metformin use was not associated with the overall survival of lung cancer patients (HR = 0.79, 95% CI: 0.62-1.02). In the subgroup analyses by country or subtype of lung cancer, although a beneficial effect of metformin use on overall survival was found in patients with smallcell lung cancer or in lung patients from China, it may be inappropriate draw a final conclusion considering small sample size, low study quality, and the limited number of studies in the subgroups. Further analyses found that metformin use after diagnosis showed a beneficial effect on both over survival (HR = 0.79, 95% CI: 0.72-0.87) and progressionfree survival (PFS; HR = 0.62, 95% CI: 0.39-0.96) of lung cancer patients. In conclusion, metformin use after diagnosis is associated with improved overall survival and PFS of lung cancer patients. Nevertheless, this effect of metformin use is needed for further assessment.
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Jaeger K, Sukseree S, Zhong S, Mlitz V, Tschachler E, Rice R, Eckhart L. 1344 Keratinocyte cornification requires autophagy for efficient degradation of non-cytoskeletal proteins. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Orengo JM, Radin AR, Kamat V, Badithe A, Ben LH, Bennett BL, Zhong S, Birchard D, Limnander A, Rafique A, Bautista J, Kostic A, Newell D, Duan X, Franklin MC, Olson W, Huang T, Gandhi NA, Lipsich L, Stahl N, Papadopoulos NJ, Murphy AJ, Yancopoulos GD. Treating cat allergy with monoclonal IgG antibodies that bind allergen and prevent IgE engagement. Nat Commun 2018. [PMID: 29650949 DOI: 10.1038/s41467-018-03636-8.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Acute allergic symptoms are caused by allergen-induced crosslinking of allergen-specific immunoglobulin E (IgE) bound to Fc-epsilon receptors on effector cells. Desensitization with allergen-specific immunotherapy (SIT) has been used for over a century, but the dominant protective mechanism remains unclear. One consistent observation is increased allergen-specific IgG, thought to competitively block allergen binding to IgE. Here we show that the blocking potency of the IgG response to Cat-SIT is heterogeneous. Next, using two potent, pre-selected allergen-blocking monoclonal IgG antibodies against the immunodominant cat allergen Fel d 1, we demonstrate that increasing the IgG/IgE ratio reduces the allergic response in mice and in cat-allergic patients: a single dose of blocking IgG reduces clinical symptoms in response to nasal provocation (ANCOVA, p = 0.0003), with a magnitude observed at day 8 similar to that reported with years of conventional SIT. This study suggests that simply augmenting the blocking IgG/IgE ratio may reverse allergy.
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Qian L, Jiang C, Sun P, Xu D, Wang Y, Fu M, Zhong S, Ouyang J. A comparison of the biomechanical stability of pedicle-lengthening screws and traditional pedicle screws: an in vitro instant and fatigue-resistant pull-out test. Bone Joint J 2018; 100-B:516-521. [PMID: 29629595 DOI: 10.1302/0301-620x.100b4.bjj-2017-0877.r1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Aims The aim of this study was to compare the peak pull-out force (PPF) of pedicle-lengthening screws (PLS) and traditional pedicle screws (TPS) using instant and cyclic fatigue testing. Materials and Methods A total of 60 lumbar vertebrae were divided into six groups: PLS submitted to instant pull-out and fatigue-resistance testing (groups A1 and A2, respectively), TPS submitted to instant pull-out and fatigue-resistance testing (groups B1 and B2, respectively) and PLS augmented with 2 ml polymethylmethacrylate, submitted to instant pull-out and fatigue-resistance testing (groups C1 and C2, respectively). The PPF and normalized PPF (PPFn) for bone mineral density (BMD) were compared within and between all groups. Results In all groups, BMD was significantly correlated with PPF (r = 0.83, p < 0.001). The PPFn in A1 was significantly less than in B1 (p = 0.006) and C1 (p = 0.002). The PPFn of A2 was significantly less than in B2 (p < 0.001) and C2 (p < 0.001). The PPFn in A1, B1, and C1 was significantly greater than in A2 (p = 0.002), B2 (p = 0.027), and C2 (p = 0.003). There were no significant differences in PPFn between B1 and C1, or between B2 and C2. Conclusion Pedicle lengthening screws with cement augmentation can provide the same fixation stability as traditional pedicle screws and may be a viable clinical option. Cite this article: Bone Joint J 2018;100-B:516-21.
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Zeng CH, Li HR, Liu ZQ, Chen F, Zhong S. Structural data of thermostable 3D Ln-MOFs that based on flexible ligand of 1,3-adamantanediacetic acid. Data Brief 2018; 17:689-697. [PMID: 29556517 PMCID: PMC5854545 DOI: 10.1016/j.dib.2018.01.094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 01/30/2018] [Indexed: 11/26/2022] Open
Abstract
In this data article, we present the structural and PARD data of the Ln-MOFs. Detailed structure, luminescence and sensing properties were discussed in our previous study (Zeng et al., in press) [1] The data includes the SBU structure patterns of these Ln-MOFs, thermostability of Ln-MOFs in water and also detailed structure information listed in Table 1, Table 2, Table 3, Table 4, Table 5, Table 6, Table 7, Table 8.
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Li Y, Zou H, Qiao Z, Liao Y, Wang L, Zhong S. Fabrication of ultralong ceria nanobelts via a coordination polymer precursor method. NEW J CHEM 2018. [DOI: 10.1039/c7nj04985d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Ultralong cerium-based coordination polymer (CP) nanobelts have been successfully synthesized through a facile solvothemal approach. After calcination in air and being loaded 1 wt% Pt, the catalyst showed satisfactory activity of catalytic reduction of p-nitrophenol.
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Isinger M, Squibb RJ, Busto D, Zhong S, Harth A, Kroon D, Nandi S, Arnold CL, Miranda M, Dahlström JM, Lindroth E, Feifel R, Gisselbrecht M, L’Huillier A. Photoionization in the time and frequency domain. Science 2017; 358:893-896. [DOI: 10.1126/science.aao7043] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 10/19/2017] [Indexed: 11/02/2022]
Abstract
Ultrafast processes in matter, such as the electron emission after light absorption, can now be studied using ultrashort light pulses of attosecond duration (10−18 seconds) in the extreme ultraviolet spectral range. The lack of spectral resolution due to the use of short light pulses has raised issues in the interpretation of the experimental results and the comparison with theoretical calculations. We determine photoionization time delays in neon atoms over a 40–electron volt energy range with an interferometric technique combining high temporal and spectral resolution. We spectrally disentangle direct ionization from ionization with shake-up, in which a second electron is left in an excited state, and obtain excellent agreement with theoretical calculations, thereby solving a puzzle raised by 7-year-old measurements.
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Liu R, Shuai M, Xu H, Zhong S. Uniform Gd-Based Coordination Polymer Hollow Spheres: Synthesis, Formation Mechanism and Upconversion Properties. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0700-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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62
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Fabrizio D, Malboeuf C, Lieber D, Zhong S, He J, White E, Coyne M, Silterra J, Brennan T, Ma J, Kennedy M, Schleifman E, Paul S, Li Y, Shames D, Cummings C, Peters E, Kowanetz M, Lipson D, Otto G. Analytic validation of a next generation sequencing assay to identify tumor mutational burden from blood (bTMB) to support investigation of an anti-PD-L1 agent, atezolizumab, in a first line non-small cell lung cancer trial (BFAST). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx363.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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63
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Wang J, Xu H, Zhou S, Wang D, Zhu L, Hou J, Tang J, Zhao J, Zhong S. Body mass index and mortality in lung cancer patients: a systematic review and meta-analysis. Eur J Clin Nutr 2017; 72:4-17. [PMID: 28513621 DOI: 10.1038/ejcn.2017.70] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 04/04/2017] [Accepted: 04/12/2017] [Indexed: 01/19/2023]
Abstract
Studies examining the relation of body mass index (BMI) and mortality in patients with lung cancer have shown diverse results. We conducted a meta-analysis to investigate the association using all available studies from January 1982 to October 2016. PubMed and EMBASE were searched to identify relevant studies. We calculated the summary hazard ratio (HR) and 95% confidence interval (CI) using random effects model. The dose-response relationship was assessed by random effects meta-regression model. Fifty-five articles from 51 studies involving 3 152 552 subjects (males, 54.8%) were included. The pooled results suggested that on average a high BMI decreased risk of death from lung cancer or all-cause. Each 5 kg/m2 increase in BMI had a 12% lower risk of lung cancer-specific mortality (HR=0.88, 95% CI: 0.75-1.02, P=0.09) and a 14% lower risk of all-cause mortality (HR=0.86, 95% CI: 0.77-0.96, P<0.01). When stratifying by ethnicity, each 5 kg/m2 increase in BMI was associated with 22% and 28% reduction, respectively, in the risk of lung cancer-specific mortality (P<0.01) and all-cause mortality (P<0.01) in Asians, but no association was found in Westerners (P=0.51 and P=0.53, respectively). In conclusion, lung cancer patients with a higher BMI have a longer survival than those with a lower BMI. Considering the significant heterogeneity between included studies, future studies are needed to confirm these findings.
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Zhong S, Zhang Y, Lei J, Li W, Wu Z, Shi G. Abstract P6-07-31: Molecular mechanism of alcohol-associated breast cancer. Cancer Res 2017; 77:P6-07-31-P6-07-31. [DOI: 10.1158/1538-7445.sabcs16-p6-07-31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Epidemiological studies have indicated that alcohol consumption is an established risk factor for breast cancer. The association of alcohol consumption and breast cancer is more pronounced in ER+ cases than in ER- cases. However, this molecular mechanism remains to be determined. Deregulation of RNA polymerase III (Pol III) transcription enhances cellular tRNAs and 5S rRNA production, increasing translational capacity to promote cell transformation and tumor formation. Our results reveal that alcohol increases Pol III gene transcription in both normal and cancer breast cell lines. The induction of Pol III genes by alcohol in ER+ breast cancer cells is significantly higher than in ER- normal breast cells and ER- breast cancer cells. E2 causes slight increase in Pol III gene transcription. The addition of ethanol to this system produces a marked increase. Alcohol increases ERa expression to enhance the cellular levels of Brf1 protein and mRNA. In addition, ethanol markedly stimulates phosphorylation of JNK1. Inhibition of JNK1 decreases ERE-Luc reporter activity and represses expression of ERa, Brf1 and Pol III genes. Reduction of ERa by its siRNA represses Brf1 and Pol III gene transcription. Ethanol with E2 produces larger and more numerous colonies. Repression of ERa or Brf1 inhibits alcohol-induced cell transformation. More interestingly, human biopsies studies show that Brf1 expression is significantly increased in nuclei of breast cancer cells, compared to tissue adjacent to the carcinoma. Together, these results support the idea that alcohol increases ERa expression through JNK1 pathway to elevate Brf1 expression and Pol III gene transcription, leading to greater phenotypic changes. ERa mediates Pol III gene transcription through Brf1, suggesting that ERa play a critical role in alcohol-induced deregulation of Pol III genes in ER+ breast cancer development.
*: The project is supported by NIAAA/NIH grants: AA017288, AA021114 and AA02324 to S Zhong.
Citation Format: Zhong S, Zhang Y, Lei J, Li W, Wu Z, Shi G. Molecular mechanism of alcohol-associated breast cancer [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P6-07-31.
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Liao Y, Li Y, Wang L, Zhao Y, Ma D, Wang B, Wan Y, Zhong S. Multi-shelled ceria hollow spheres with a tunable shell number and thickness and their superior catalytic activity. Dalton Trans 2017; 46:1634-1644. [DOI: 10.1039/c6dt04402f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Multi-shelled ceria hollow spheres with tunable shell number and thickness have been prepared via a coordination polymer precursor method. Besides, this method was extended to the preparation of other rare earth oxides. Au and AuPd loaded ceria hollow spheres composites display superior catalytic activity.
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66
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Xu H, Xu B, Liu R, Li X, Zhang S, Ouyang C, Zhong S. Facile microwave synthesis of ScPO4·2H2O flowerlike superstructures: morphology control, electronic structure and multicolor tunable luminescent properties. CrystEngComm 2017. [DOI: 10.1039/c7ce01390f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ScP04·2H2O flowerlike superstructures constructed by well-aligned nanorods were prepared and multicolor tunable emission including white light emission was realized by adjusting the relative doping concentration.
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67
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Xu H, Liu R, Xu B, Li X, Ouyang C, Zhong S. Preparation and temperature-dependent photoluminescence properties of ScF 3:Eu 3+ submicroparticles. NEW J CHEM 2017. [DOI: 10.1039/c7nj00848a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Negative thermal expansion Eu3+-doped ScF3 submicroparticles were prepared via a facile solvothermal method and their temperature-dependent luminescence properties were investigated.
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Bai DY, Zhang HP, Zhong S, Suo WH, Gao DH, Ding Y, Tu JH. [Clinical utility of real-time fluorescent PCR for combined detection of anaplastic lymphoma kinase and c-ros oncogene 1 receptor tyrosine kinase in non-small cell lung cancer]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 2016; 38:898-903. [PMID: 27998465 DOI: 10.3760/cma.j.issn.0253-3766.2016.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical application value of combined detection of ALK fusion gene and c-ros oncogene 1 receptor tyrosine kinase (ROS1) fusion gene in non-small cell lung cancer (NSCLC) using real-time fluorescent PCR. Methods: A kit for combined detection of ALK fusion gene and ROS1 fusion gene based on fluorescent PCR was used to simultaneously detect the two fusion genes in 302 cases of NSCLC specimens. The results were validated through Sanger sequencing. The consistency of the two detection methods was analyzed. Results: All 302 cases of NSCLC specimens were successfully analyzed through fluorescent PCR (302/302). 12 cases (4.0%) were found to contain ALK fusion gene, including 3 cases with ALK-M1, 3 with ALK-M2, 3 with ALK-M3, 1 with ALK-M4, and 2 with ALK-M6 fusion gene.12 cases (4.0%) were found to contain ROS1 fusion gene, including 1 case with ROS1-M7, 8 cases with ROS1-M8, 1 case with ROS1-M12, 1 case with ROS1-M14, and 1 case with double-positive ROS1-M3 and ROS1-M8 fusion genes. The total detection rate of ALK fusion gene and ROS1 fusion gene was 7.9% (24/302) and 278 cases showed to be negative for ALK fusion gene and ROS1 fusion gene. The successful detection rates for Sanger DNA sequencing were also 100%. The positive, negative and total coincidence rates obtained by real-time fluorescent PCR and by Sanger DNA sequencing were all 100%. Conclusions: The results of Sanger DNA sequencing demonstrate that the real-time fluorescent PCR assay is equally effective in detecting ALK and ROS1 fusion genes in NSCLC tissues. Furthermore, real-time fluorescent PCR assay can be used to detect trace ALK and ROS1 fusion gene simultaneously in tiny samples, and can save time and avoid repeated sampling. It is worthy of recommendation as a rapid and reliable detection technique.
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Sariyska R, Lachmann B, Reuter M, Cheng C, Gnisci A, Kaliszewska-Czeremska K, Laconi S, Zhong S, Toraman D, Montag C. Internet use: Molecular influences of a functional variant on the OXTR gene, the motivation behind using the Internet, and cross-cultural specifics. PERSONALITY AND INDIVIDUAL DIFFERENCES 2016. [DOI: 10.1016/j.paid.2016.05.286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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70
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Li B, Xu H, Xiao C, Shuai M, Chen W, Zhong S. Coordination polymer core/shell structures: Preparation and up/down-conversion luminescence. J Colloid Interface Sci 2016; 479:15-19. [PMID: 27344485 DOI: 10.1016/j.jcis.2016.06.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 06/11/2016] [Accepted: 06/14/2016] [Indexed: 11/19/2022]
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71
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Stephens P, Clark T, Kennedy M, He J, Young G, Zhao M, Coyne M, Breese V, Young L, Zhong S, Bailey M, Fendler B, Miller V, Schleifman E, Peters E, Otto G, Lipson D, Ross J. Analytic validation of a clinical circulating tumor DNA assay for patients with solid tumors. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw380.01] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zhang H, Yu P, Zhong S, Ge T, Peng S, Zhou Z, Guo X. Gliocyte and synapse analyses in cerebral ganglia of the Chinese mitten crab, Eriocheir sinensis: ultrastructural study. Eur J Histochem 2016; 60:2655. [PMID: 27734995 PMCID: PMC5062632 DOI: 10.4081/ejh.2016.2655] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 06/16/2016] [Accepted: 07/01/2016] [Indexed: 01/13/2023] Open
Abstract
The Chinese mitten crab Eriocheir sinensis is an economically important aquatic species in China. Many studies on gene structure, breeding, and diseases of the crab have been reported. However, knowledge about the organization of the nerve system of the crab remains largely unknown. To study the ultrastructure of the cerebral ganglia of E. sinensis and to compare the histological findings regarding the nerve systems of crustaceans, the cerebral ganglia were observed by transmission electron microscopy. The results showed that four types of gliocytes, including type I, II, III, and IV gliocytes were located in the cerebral ganglia. In addition, three types of synapses were present in the cerebral ganglia, including unidirectional synapses, bidirectional synapses, and combined type synapses.
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Xu X, Zhao X, Lu L, Duan X, Qin H, Du X, Li G, Tao Z, Zhong S, Wang G. Transcriptomic analysis of different stages of pigeon ovaries by RNA-sequencing. Mol Reprod Dev 2016; 83:640-8. [DOI: 10.1002/mrd.22670] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 06/13/2016] [Indexed: 12/22/2022]
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Zhong S, Liu H, Zhang H, Han T, Jia H, Xie Y. Effects of Kluyveromyces marxianus Isolated from Tibetan Mushrooms on the Plasma Lipids, Egg Cholesterol Level, Egg Quality and Intestinal Health of Laying Hens. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2016. [DOI: 10.1590/1806-9061-2015-0070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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75
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Hachtel AJ, Gillette MC, Clements ER, Zhong S, Weeks MR, Bali S. Note: Design and implementation of a home-built imaging system with low jitter for cold atom experiments. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:056108. [PMID: 27250483 DOI: 10.1063/1.4950897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel home-built system for imaging cold atom samples is presented using a readily available astronomy camera which has the requisite sensitivity but no timing-control. We integrate the camera with LabVIEW achieving fast, low-jitter imaging with a convenient user-defined interface. We show that our system takes precisely timed millisecond exposures and offers significant improvements in terms of system jitter and readout time over previously reported home-built systems. Our system rivals current commercial "black box" systems in performance and user-friendliness.
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Blair DJ, Zhong S, Hesse MJ, Zabaleta N, Myers EL, Aggarwal VK. Full chirality transfer in the synthesis of hindered tertiary boronic esters under in situ lithiation-borylation conditions. Chem Commun (Camb) 2016; 52:5289-92. [PMID: 27002235 DOI: 10.1039/c6cc00536e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hindered tertiary neopentyl glycol boronic esters can be prepared by using in situ lithiation-borylation of enantiopure secondary benzylic carbamates at -20 °C with full chirality transfer.
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Xu Y, Bai J, Wang G, Zhong S, Su X, Huang Z, Chen G, Zhang J, Hou X, Yu X, Lu B, Wang Y, Li X, Hu H, Zhang C, Liang Y, Shaw J, Wu X. Clinical profile of diabetic ketoacidosis in tertiary hospitals in China: a multicentre, clinic-based study. Diabet Med 2016; 33:261-8. [PMID: 26032429 DOI: 10.1111/dme.12820] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/27/2015] [Indexed: 12/28/2022]
Abstract
AIMS To evaluate the clinical profile of patients with diabetic ketoacidosis in tertiary hospitals in China. METHODS A retrospective study of patients hospitalized with diabetic ketoacidosis between 2010 and 2012 was carried out in 15 tertiary hospitals around China. Clinical and laboratory data were collected. Patients were classified based on clinical diagnosis and treatment history. Groups were compared for differences in vital statistics and biochemical profiles at presentation. RESULTS The study comprised 643 patients with diabetic ketoacidosis: 308 patients (47.9%) with Type 1 diabetes, 294 patients (45.7%) with Type 2 diabetes and 41 patients (6.4%) with atypical diabetes. Three hundred and eighty-eight diabetic ketoacidosis episodes (60.3%) were in patients with known diabetes. The most common precipitating factor was infection (40.1%), followed by unknown causes (36.9%) and non-compliance with anti-diabetes treatment (16.8%). At presentation, gastrointestinal symptoms and dehydration were more common in the Type 1 diabetes group. For new-onset diabetes, only 74.4% and 55.9% of patients were evaluated for β-cell function and autoantibodies for classification. Only 67% of patients with diabetic ketoacidosis received appropriate fluid therapy and 56% patients with severe acidosis received bicarbonate therapy. The length of hospital stay was 10.0 (7.0-14.0) days. The mortality rate was 1.7%, and was much higher in Type 2 diabetes than that in Type 1 diabetes (3.2% vs. 0.4%, P < 0.01). CONCLUSIONS Type 2 and Type 1 diabetes contribute to a similar proportion of cases presenting with diabetic ketoacidosis in China. Admissions with diabetic ketoacidosis are still associated with significant mortality and prolonged hospitalization. The efficiency of diabetic ketoacidosis management needs to be improved by implementing the updated guidelines.
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Zhong S, Yan X, Wu Y, Zhang X, Chen L, Tang J, Zhao J. Body mass index and mortality in prostate cancer patients: a dose-response meta-analysis. Prostate Cancer Prostatic Dis 2016; 19:122-31. [PMID: 26754262 DOI: 10.1038/pcan.2015.64] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 10/29/2015] [Accepted: 11/26/2015] [Indexed: 02/02/2023]
Abstract
BACKGROUND Previous studies concerning the association between body mass index (BMI) and mortality in prostate cancer yielded mixed results. We investigated the association by performing a meta-analysis of all available studies. METHODS Relevant studies were identified by searching PubMed and EMBASE to August 2015. We calculated the summary hazard ratio (HR) and 95% confidence interval (CI) using random-effects models. We estimated combined HRs associated with defined increments of BMI, using random-effects meta-analysis and dose-response meta-regression models. RESULTS Thirty-seven cohort studies and one case-control study involving 27 38 000 patients of prostate cancer were selected for meta-analysis. The summary results indicated higher prediagnosis BMI but not postdiagnosis BMI was associated with increased risk of death from prostate cancer. An increment of every 5 kg/m(2) in prediagnosis BMI was associated with a 15% higher prostate cancer-specific mortality (HR=1.15, 95% CI: 1.07-1.23, P<0.01). Prediagnosis or postdiagnosis BMI showed no effect on all-cause mortality in prostate cancer patients. CONCLUSIONS In conclusion, higher prediagnosis BMI is associated with a higher risk of death from prostate cancer. Considering the significant heterogeneity among included studies, these findings require confirmation in future studies.
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Wang Y, Zhong S, Jia Y, Zhou Z, Zhou Q, Huang L. Reduced interhemispheric resting-state functional connectivity in unmedicated bipolar II disorder. Acta Psychiatr Scand 2015; 132:400-7. [PMID: 25929680 DOI: 10.1111/acps.12429] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/09/2015] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Abnormalities in structural and functional brain connectivity have been increasingly reported in patients with bipolar disorder (BD) by recent neuroimaging studies. However, relatively little is known about the changes in functional interaction between the cerebral hemispheres in BD. The present study aimed to examine the interhemispheric functional connectivity of the whole brain in patients with BD II during resting state. METHOD Twenty-six patients with unmedicated BD II depression and 40 normal controls underwent the resting-state functional magnetic resonance imaging. The functional connectivity between any pair of symmetrical interhemispheric voxels (i.e., functional homotopy) was measured by voxel-mirrored homotopic connectivity (VMHC). RESULTS The patients with BD II showed lower VMHC than normal controls in the medial prefrontal cortex and inferior temporal gyrus. No regions of increased VMHC were detected in patients. There were no significant correlations between the VMHC values in these regions and clinical severity of BD symptoms. CONCLUSION These findings suggest substantial impairment of interhemispheric coordination in BD II.
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Zhang H, Guo X, Zhong S, Ge T, Peng S, Yu P, Zhou Z. Heterogeneous vesicles in mucous epithelial cells of posterior esophagus of Chinese giant salamander (Andrias davidianus). Eur J Histochem 2015; 59:2521. [PMID: 26428885 PMCID: PMC4598597 DOI: 10.4081/ejh.2015.2521] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 07/04/2015] [Accepted: 07/06/2015] [Indexed: 11/23/2022] Open
Abstract
The Chinese giant salamander belongs to an old lineage of salamanders and endangered species. Many studies of breeding and disease regarding this amphibian had been implemented. However, the studies on the ultrastructure of this amphibian are rare. In this work, we provide a histological and ultra-structural investigation on posterior esophagus of Chinese giant salamander. The sections of amphibian esophagus were stained by hematoxylin & eosin (H&E). Moreover, the esophageal epithelium was observed by transmission electron microscopy (TEM). The results showed that esophageal epithelium was a single layer epithelium, which consisted of mucous cells and columnar cells. The esophageal glands were present in submucosa. The columnar cells were ciliated. According to the diverging ultrastructure of mucous vesicles, three types of mucous cells could be identified in the esophageal mucosa: i) electron-lucent vesicles mucous cell (ELV-MC); ii) electron-dense vesicles mucous cell (EDV-MC); and iii) mixed vesicles mucous cell (MV-MC).
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81
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Wang XJ, Xia LL, Xu TY, Zhang XH, Zhu ZW, Zhang MG, Liu Y, Xu C, Zhong S, Shen ZJ. Changes in erectile organ structure and function in a rat model of chronic prostatitis/chronic pelvic pain syndrome. Andrologia 2015; 48:243-51. [PMID: 25990367 DOI: 10.1111/and.12437] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2015] [Indexed: 12/29/2022] Open
Abstract
There is a growing recognition of the association between chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) and erectile dysfunction (ED); however, most of the reports are based on questionnaires which cannot distinguish between organic and functional ED. The purpose of this study was to determine the exact relationship between CP/CPPS and ED, and to investigate the changes in erectile organ structure and function in a rat model of CP/CPPS. We established a rat model of experimental autoimmune prostatitis (EAP), which is a valid model for CP/CPPS. Erectile function in EAP and normal rats was comparable after cavernous nerve electrostimulation. The serum testosterone and oestradiol levels, ultrastructure of the corpus cavernosum and expression of endothelial nitric oxide synthase and neuronal nitric oxide synthase in the two groups were similar; however, there was a decrease in smooth muscle-to-collagen ratio and alpha-smooth muscle actin expression and an increase in transforming growth factor-beta 1 expression was observed in EAP rats. Thus, organic ED may not exist in EAP rats. We speculate that ED complained by patients with CP/CPPS may be psychological, which could be caused by impairment in the quality of life; however, further studies are needed to fully understand the potential mechanisms underlying the penile fibrosis in EAP rats.
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Zheng K, Lou KL, Zeng CH, Li SS, Nie ZW, Zhong S. Hybrid Membrane of Agarose and Lanthanide Coordination Polymer: a Selective and Sensitive Fe3+Sensor. Photochem Photobiol 2015; 91:814-8. [DOI: 10.1111/php.12460] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 04/14/2015] [Indexed: 12/27/2022]
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83
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Zeng CH, Zheng K, Lou KL, Meng XT, Yan ZQ, Ye ZN, Su RR, Zhong S. Synthesis of Porous Europium Oxide Particles for Photoelectrochemical Water Splitting. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.03.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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84
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Zhong S, Chen P, Yao W. Ni-Rich Layered Oxide Li1.05(Ni0.7Mn0.3)O2 as a Highly Reversible Cathode Material for Lithium-Ion Batteries. ACTA ACUST UNITED AC 2015. [DOI: 10.1149/2.0041506eel] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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85
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Li SS, Ye ZN, Xu SS, Zhang YJ, Tao AR, Liu M, Zeng CH, Zhong S. Highly luminescent lanthanide CPs based on dinuclear cluster: crystal structure and sensitive Trp sensor. RSC Adv 2015. [DOI: 10.1039/c5ra12149c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
A lanthanide coordination polymer is explored as Trp sensor. The possible sensing mechanism is the combination between Trp and Tb3+, which improves the antenna effect.
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86
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Shi M, Zeng C, Wang L, Nie Z, Zhao Y, Zhong S. Straw-sheaf-like terbium-based coordination polymer architectures: microwave-assisted synthesis and their application as selective luminescent probes for heavy metal ions. NEW J CHEM 2015. [DOI: 10.1039/c4nj02138j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Terbium-based coordination polymer architectures were successfully synthesized via a microwave heating approach and they showed highly sensitive and selective luminescence quenching to Pb2+ in aqueous solution.
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Li Y, Zhang J, Qian Y, Meng C, Wang H, Tao X, Zhong S, Cao S, Li Q. Molecular characterization, expression, polymorphism of NR5A2 and its relationship with litter size in Hu sheep. GENETICS AND MOLECULAR RESEARCH 2015; 14:12765-75. [DOI: 10.4238/2015.october.19.20] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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88
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Zhang H, Ge T, Peng S, Zhong S, Zhou Z. Microstructure Features of Proventriculus and Ultrastructure of the Gastric Gland Cells in Chinese Taihe Black-bone Silky Fowl (Gallus gallus domesticusBrisson). Anat Histol Embryol 2014; 45:1-8. [DOI: 10.1111/ahe.12164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 10/22/2014] [Indexed: 11/29/2022]
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Yang S, Hua P, Shang X, Cui Z, Zhong S, Gong G, William Humphreys G. Deficiency of brain structural sub-network underlying post-ischaemic stroke apathy. Eur J Neurol 2014; 22:341-7. [PMID: 25319873 DOI: 10.1111/ene.12575] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 08/25/2014] [Indexed: 11/29/2022]
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90
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Zhong S, Jing H, Li Y, Yin S, Zeng C, Wang L. Coordination Polymer Submicrospheres: Fast Microwave Synthesis and Their Conversion under Different Atmospheres. Inorg Chem 2014; 53:8278-86. [DOI: 10.1021/ic5005769] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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91
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Chaudhry IA, Zhong S. A single circular synthetic jet issued into turbulent boundary layer. J Vis (Tokyo) 2014. [DOI: 10.1007/s12650-014-0199-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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92
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Zhong S, Wang M, Wang L, Li Y, Noh HM, Jeong JH. Preparation of 3D cerium-based coordination polymer microstructures and their conversion to ceria. CrystEngComm 2014. [DOI: 10.1039/c3ce41996g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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93
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Yu R, Zhong S, Xue N, Li H, Ma H. Synthesis, structure, and peculiar green emission of NaBaBO3:Ce3+ phosphors. Dalton Trans 2014; 43:10969-76. [DOI: 10.1039/c4dt00859f] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polycrystalline samples of Ce3+-doped NaBaBO3 (0.5–15 mol%) were prepared by the solid-phase synthesis.
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Ji Y, Yan H, Wang L, Luo Y, Guo D, Bai L, Zhong S. Ultralong Coordination Polymers Microtubes: Facile Microwave Preparation and Characterization. CURRENT MICROWAVE CHEMISTRY 2013. [DOI: 10.2174/2213335601666131223234744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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95
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Wu Y, Niu Y, Zhong S, Liu H, Zhen Y, Saint-Leger D, Verschoore M. A preliminary investigation of the impact of oily skin on quality of life and concordance of self-perceived skin oiliness and skin surface lipids (sebum). Int J Cosmet Sci 2013; 35:442-7. [PMID: 23651406 DOI: 10.1111/ics.12063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 05/02/2013] [Indexed: 11/30/2022]
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Liu Z, Ding L, Zhong S, Cao X, Jiang L, Duan H. Pharmacokinetics of a new immediate-release compound omeprazole capsule and its comparison with the enteric-coated formulation under fasting and fed conditions. Drug Res (Stuttg) 2013; 63:370-5. [PMID: 23558602 DOI: 10.1055/s-0033-1341477] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The present study was conducted to describe the pharmacokinetic profile of immediate-release compound omeprazole capsule and compare it with the enteric-coated formulation under fasting and fed condition.This study was designed to phase I, open-label, randomized, 3-part clinical trial. 12 subjects in part one received single doses (20 mg and 40 mg) and repeated doses (20 mg). Different 30 subjects in part 2 (fasting condition) and part 3 (fed condition) received either compound omeprazole capsule (40 mg) or delayed-release omeprazole (40 mg) separated by 7 days.Compound omeprazole capsule showed dose non-proportionality in the range from 20 mg to 40 mg. The AUC0-t of 20 mg omeprazole is 78% higher after repeated doses. The C max was higher and T max was lower for compound omeprazole capsule than delayed-release omeprazole. 90% CIs for AUC0-t of the 2 periods (test/reference) under fasting and fed conditions were 106.3% (102.2%~109.2%) and 104.1% (93.4%~109.6%), respectively. Presence of food reduced the rate (C max) and extent (AUC0-t) of systemic exposure of the test and reference formulations from 1 462 to 777 ng · mL-1, 1 055 to 602 ng · mL-1, 2 597 to 1 852 ng · h · mL-1 and 2 454 to 1 873 ng · h · mL-1, respectively.Exposed dose of omeprazole in subjects with compound omeprazole capsule was time- and dose-dependent. Compared with delayed-release omeprazole, compound omeprazole capsule had rapid but similar degree of absorption of omeprazole.
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Bräse S, Gläser F, Kramer CS, Lindner S, Linsenmeier AM, Masters KS, Meister AC, Ruff BM, Zhong S. Progress in the chemistry of organic natural products. The chemistry of mycotoxins. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2013; 97:v-300. [PMID: 23781707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Tang J, Li W, Zhong S, Xu J, Zhao J. Abstract P4-08-10: Systematic expression analysis of the genes related to drug-resistance in isogenic docetaxel- and adriamycin-resistance breast cancer cell lines. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p4-08-10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Docetaxel (Doc) and Adriamycin (Adr) are two of the most effective chemotherapeutic agents in the treatment of breast cancer. However, their efficacy is often limited by the emergence of multidrug resistance (MDR). The purpose of this study was to investigate MDR mechanisms through analyzing systematically the expression changes of genes related to MDR in the induction process of isogenic drug resistant MCF-7 cell lines.
Material and Methods: Isogenic resistant sublines selected at 100 and 200nM docetaxel (MCF-7/100nM Doc and MCF-7/200nM Doc) or at 500 and 1500 nM adriamycin (MCF-7/500nM Adr and MCF-7/1500nM) were developed from human breast cancer parental cell line MCF-7/S, by exposing MCF-7/S to gradually increasing concentrations of docetaxel or adriamycin in vitro. Flow cytometry, MTT cytotoxicity assay and cell growth curves were preformed to demonstrate the MDR characteristics developed in sublines. Some key genes on the pathways related to drug resistance (including drug-transporters: MDR1, MRP1 and BCRP; drug metabolizing-enzymes: CYP3A4 and GST pi; target gene: Topo IIα and β-tubulin III; apoptosis genes: Bcl-2 and Bax) were analyzed at RNA and protein expression levels by real time RT-qPCR and western blot, respectively.
Results: MCF-7/100nM Doc and MCF-7/200nM Doc was 22- and 37-fold resistant to docetaxel, and 18- and 32-fold to adriamycin, respectively. MCF-7/500nM Adr and MCF-7/1500nM Adr was 61- and 274-fold resistant to adriamycin, and 3- and 12-fold to docetaxel, respectively. Meantime, they also showed cross-resistance to the other anticancer drugs in different degree. Compared to sensitive MCF-7/S, RT-qPCR and Western blot results revealed that the expression of MDR1, MRP1, BCRP, Bcl-2 were elevated in both MCF-7/Doc and MCF-7/Adr, and Topo IIα, Bax were down-regulated in both the sublines, while CYP3A4 and β-tubulin III were increased only in MCF-7/Doc and GST pi was increased only in MCF-7/Adr. Furthermore, these changes above were dose-dependent, i.e. acquirement of MDR is dependent on docetaxel or adriamycin concentrations in breast carcer model resistant MCF-7 cells.
Conclusions: The established MCF-7/Doc or MCF-7/Adr has the typical MDR characteristics, which can be used as the models for resistance mechanism study. The acquired process of MCF-7/S resistance to docetaxel or adriamycin is gradual, and is also complicated with the various pathways involved in. There are some common mechanisms as well as drug-special mechanisms between MCF-7/Doc and MCF-7/Adr.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P4-08-10.
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Li J, Jia L, Zhao P, Jiang Y, Zhong S, Chen D. Stable knockdown of clusterin by vectorbased RNA interference in a human breast cancer cell line inhibits tumour cell invasion and metastasis. J Int Med Res 2012; 40:545-55. [PMID: 22613415 DOI: 10.1177/147323001204000216] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Overexpression of the clusterin (CLU) gene occurs in breast cancer and is associated with lymph node metastasis. The present study explored the effect of CLU silencing on invasion and metastasis, and the relationship between CLU expression and the extracellular signal-regulated kinase (ERK) / matrix metalloproteinase-9 (MMP) signalling pathway in human breast cancer cells. METHODS A pcDNA3.1-based RNA interference approach was used to knockdown the CLU gene in MDA-231 cells (MDA-231-CLUi); control MDA-231 cells were transfected with an empty vector (MDA-231-Vec). Reverse transcription-polymerase chain reaction was used to assess CLU and MMP-9 mRNA levels, and Western blotting was used to analyse CLU, MMP-9 and ERK protein levels. Metastatic potential was evaluated using in vitro and in vivo models of invasion and metastasis. RESULTS Compared with MDA-231-Vec cells, the MDA-231-CLUi cells demonstrated reduced migration and invasion in vitro and decreased metastatic potential in vivo. Reintroduction and reexpression of the CLU gene into the MDA-231-CLUi cells restored the invasive phenotype. MMP-9 mRNA and protein levels were reduced in MDA-231-CLUi cells, and there was a correlation between activated ERK and CLU and MMP-9 protein levels. CONCLUSION CLU may regulate the aggressive behaviour of human breast cancer cells through modulation of ERK signalling and MMP9 expression.
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Puri KD, Saucedo ES, Zhong S. Molecular Characterization of Fusarium Head Blight Pathogens Sampled from a Naturally Infected Disease Nursery Used for Wheat Breeding Programs in China. PLANT DISEASE 2012; 96:1280-1285. [PMID: 30727155 DOI: 10.1094/pdis-08-11-0713-re] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Fusarium head blight (FHB) is an important disease of wheat and barley worldwide. The disease is primarily caused by members of the Fusarium graminearum species complex, consisting of at least 14 phylogenetically distinct species. To determine the population structure of the FHB pathogens in a naturally infected disease nursery located at Jianyang, Fujian province, China, 160 isolates of the F. graminearum complex were recovered from symptomatic wheat spike samples collected in two consecutive years (2008 and 2009) and characterized using species- and chemotype-specific polymerase chain reaction as well as variable number tandem repeat (VNTR) markers. All isolates analyzed were identified as F. asiaticum except for one isolate, which was identified as F. avenaceum. Among the 159 F. asiaticum isolates, 126 (79%) isolates were of the nivalenol (NIV) type while 29 (18%) isolates were of the 15-acetyl deoxynivalenol type and only 4 (3%) isolates were of the 3-acetyl deoxynivalenol type. The 10 VNTR markers revealed 124 distinct haplotypes and 76 polymorphic alleles across the whole population. The two subpopulations (FA-08 and FA-09) grouped based on the year of collection exhibited low genetic differentiation (Fst = 0.032) and high gene flow (Nm = 15.13). However, a significant genetic differentiation was found within the NIV-type isolates as revealed by the Structure software. The pairwise linkage disequilibrium tests did not support the hypothesis of random mating in the population because half (48.8%) of the locus pairs showed a linkage disequilibrium (P > 0.05). Our results suggest that FHB in this nursery was caused by a genetically homogenous and non-random mating population of F. asiaticum in 2008 and 2009, which consisted of all three trichothecene types with various levels of aggressiveness.
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