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Search Results: 1 - 10 of 70207 matches for " Yan-Feng Zou "
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Expression of COX-2 and Bcl-2 in primary fallopian tube carcinoma: correlations with clinicopathologic features
Fang Wang,Guo-Ping Sun,Yan-Feng Zou,Qiang Wu
Folia Histochemica et Cytobiologica , 2011, DOI: 10.5603/9432
Abstract: The aim of this study was to evaluate the expression of COX-2 and Bcl-2 in primary fallopian tube carcinoma (PFTC), as well as their correlations with clinicopathologic features. We studied a cohort of 33 patients with a pathological diagnosis of PFTC. Thirty normal tubal tissues used for controls were obtained from patients diagnosed with uterine myomas. Expression analysis for COX-2 and Bcl-2 was performed using the immunohistochemical technique. The rate of preoperative diagnosis was 18.2%. With a median survival of 61.0 months (95% CI: 43.2 to 78.8 months), the estimated five-year overall survival rate in the 33 patients was 39.0%. Increased expression of COX-2 and Bcl-2 was observed in tumor specimens compared to normal controls (p = 0.026; p = 0.003). The expression rate of COX-2 in node-positive tumors was significantly higher than that of node-negative tumors (p = 0.024). Moreover, the expression rate of COX-2 was statistically significantly higher in patients with infiltration through the serosa (p = 0.019). Positive significant associations were observed between Bcl-2 staining index and FIGO stage (p = 0.015), and between Bcl-2 staining and lymph node metastasis (p = 0.010). There was a significant correlation between COX-2 expression and Bcl-2 staining index (r = 0.517, p = 0.002). We conclude that COX-2 and Bcl-2 may potentially be useful prognostic markers for PFTC. The exact molecular mechanism for correlations between COX-2 and Bcl-2 remains to be elucidated. (Folia Histochemica et Cytobiologica 2011, Vol. 49, No. 3, 389–397)
Effects of the Chinese patent medicine, Honghua Injection, on platelet glycoprotein Ⅱb/Ⅲa receptors in patients with acute coronary syndrome: a randomized controlled trial
Yan-feng Zhu
Zhong Xi Yi Jie He Xue Bao , 2012,
Abstract:
Biodegradable and bioactive porous polyurethanes scaffolds for bone tissue engineering  [PDF]
Mei-Na Huang, Yuan-Liang Wang, Yan-Feng Luo
Journal of Biomedical Science and Engineering (JBiSE) , 2009, DOI: 10.4236/jbise.2009.21007
Abstract: Biodegradable porous polyurethanes scaffold have themselves opportunities in service, in-cluding controlled degradation rate, no-toxic degradation products. However, polyurethanes are lack of bioactive groups, which limits their application. This review gives the common modification methods, surface functionalization and blending modification. In finally, the review puts forward to the bulk modification as a new method to enhance the bioactivity of polyure-thanes.
Association of NOD1 (CARD4) insertion/deletion polymorphism with susceptibility to IBD: A meta-analysis
Wei-Guo Lu, Yan-Feng Zou, Xiao-Liang Feng, Feng-Lai Yuan, Yuan-Long Gu, Xia Li, Cheng-Wan Li, Cheng Jin, Jian-Ping Li
World Journal of Gastroenterology , 2010,
Abstract: AIM: To find evidences about whether NOD1/CARD4 insertion/deletion polymorphism is associated with inflammatory bowel disease by meta-analysis.METHODS: We surveyed the studies on the association of NOD1/CARD4 insertion/deletion polymorphism with inflammatory bowel disease in PubMed. Meta-analysis was performed for genotypes GG/T vs T/T, GG/GG vs T/T, GG/T + GG/GG vs T/T, GG/GG vs T/T + GG/T, and GG allele vs T allele in a fixed/random effect model.RESULTS: We identified 8 studies (6439 cases and 4798 controls) in Caucasian populations using PubMed search. We found no association between NOD1/CARD4 insertion/deletion polymorphism and inflammatory bowel disease, Crohn’s disease, and ulcerative colitis. Stratification of cases by age showed that NOD1/CARD4 insertion/deletion polymorphism was associated with inflammatory bowel disease in younger age group at onset (< 40 years) (GG vs T: OR = 0.68, 95% CI: 0.50-0.93, P = 0.02; GG/T + GG/GG vs T/T: OR = 0.71, 95% CI: 0.59-0.85, P = 0.0003).CONCLUSION: This meta-analysis demonstrates an association between NOD1/CARD4 insertion/deletion polymorphism and inflammatory bowel disease in the younger age group at onset (< 40 years) in Caucasian populations.
Culture characteristics, pathogenicity, and genetic variation of Isaria cateniannulata isolates
环链棒束孢菌株培养特征、致病性及遗传变异研究

HAN Yan-Feng,ZHANG Yan-Wei,LIANG Jian-Dong,ZOU Xiao,LIANG Zong-Qi,
韩燕峰
,张延威,梁建东,邹晓,梁宗琦

菌物学报 , 2012,
Abstract: To develop a simple and feasible way to screen high virulent fungal pathogen against insect, culture characteristics, especially the phenotypes of synnema formation, pathogenicity against Plutella xylostella larvae, and genetic variation of 5.8S-ITS rDNA sequences were evaluated for the Isaria cateniannulata isolates collected from different geographical regions. Culture characteristics of the isolates tested displayed three different types, dense synnema, loose synnema and no synnema. The type with dense synnema had high pathogenicity with over 88.9% of larva mortality rate. The highest mortality rate of the insect (98%) was caused by the isolate XS.1 in this type. The next best was the type with loose synnema, which resulted in a 68.4% of the mortality. Only 35% of larva mortality was caused by the isolates in the type without synnema suggesting a low pathogenicity. Phylogenetic analysis showed that the strains with high pathogenicity such as XS.1, XS.2 and SL.7 were closely clustered to a subclade and the strains with lower pathogenicity including 8.02 and 468.10 were clustered together. Isolates 468.10 and 8.02 without synnemata were clustered in a separated subclade. These results demonstrated a distinct intraspecific genetic variation, and a relevance of the ability to produce synnemata to the virulence against P. xylostella larvae in I. cateniannulata. Thus, the ability of synnema formation could be an important factor to screen high virulence isolate of I. cateniannulata isolates.
Chaos characteristics of the semiconductor laser with double external cavity optical feedback
双反馈半导体激光器的混沌特性研究

Zhao Yan-Feng,
赵严峰

物理学报 , 2009,
Abstract: The chaos characteristics of a DFB semiconductor laser subjected to single and double external cavity optical feedback are analyzed experimentally. The results show that the correlation dimension, bandwidth of the chaos generated by one external cavity optical feedback can be expanded by using double external cavity optical feedback. When the laser is subjected to double external cavity optical feedback, the bandwidth with one external cavity feedback is increased from 5.5 GHz to 11 GHz. Correspondingly, the correlation dimension is increased from 2.8 to 3.6. The information of the external cavity length of the chaos generated by double external cavity optical feedback can be masked in the autocorrelation function.
Poly[[hexa-μ-aqua-diaquabis(μ4-dihydrogen benzene-1,2,4,5-tetracarboxylato)magnesiumdisodium] dihydrate]
Dan Zhao,Peng Liang,Yan-Feng Li,Sen Qiu
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812024634
Abstract: The asymmetric unit of the title compound, {[MgNa2(C10H4O8)2(H2O)8]·2H2O}n, contains one octahedrally coordinated MgII atom (site symmetry 2/m), one octahedrally coordinated NaI atom (site symmetry 2) and one half of the dihydrogen benzene-1,2,4,5-tetracarboxylate (btec) ligand, the second half of the ligand being generated by a twofold rotation axis. The basic framework of the title compound features infinite (–Na–Na–Mg–)n chains along [10-1] with the metal cations bridged by the coordinating water molecules. The chains are isolated from each other by μ4-bridging btec ligands, which form intermolecular O—H...O hydrogen bonds to uncoordinated water molecules and the coordinated water molecules of a neighbouring chain. In each btec ligand, there are also intramolecular O—H...O hydrogen bonds.
Pentacarbonyl-1κ2C,2κ3C-(ferrocenyldiphenylphosphine-1κP)[μ-2-(4-methylphenyl)-2-azapropane-1,3-dithiolato-1:2κ4S,S′:S,S′]diiron(I)(Fe—Fe)
Yan-Feng Tang,Jin-Li Zhu
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808032698
Abstract: The title compound, [Fe2(C9H11NS2){Fe(C5H5)(C17H14P)}(CO)5], was prepared as an azadithiolato–iron model for the iron-only hydrogenase active site. The Fe2S2 unit exhibits a butterfly conformation and the ferrocenyldiphenylphosphine ligand is trans to the Fe—Fe bond. The Fe—Fe distance of 2.5160 (8) is longer than found in related model structures. Intramolecular C—H...S and intermolecular C—H...O hydrogen bonds are observed.
Thermodynamic, Electromagnetic, and Lattice Properties of Antiperovskite Mn3SbN
Ying Sun,Yan-Feng Guo,Yoshihiro Tsujimoto,Xia Wang
Advances in Condensed Matter Physics , 2013, DOI: 10.1155/2013/286325
Abstract:
Bandgaps and directional propagation of elastic waves in two-dimensional square zigzag lattice structures
Yan-Feng Wang,Yue-Sheng Wang,Chuanzeng Zhang
Physics , 2014, DOI: 10.1088/0022-3727/47/48/485102
Abstract: In this paper we propose some kinds of two-dimensional square zigzag lattice structures and study their bandgaps and directional propagation of elastic waves. The band structures and the transmission spectra of the systems are calculated by using the finite element method. The effects of the geometry parameters of the 2d-zigzag lattices on the bandgaps are investigated and discussed. The mechanism of the bandgap generation is analyzed by studying the vibration modes at the bandgap edges. Multiple wide complete bandgaps are found in a wide porosity range owing to the separation of the degeneracy by introducing bending arms. The bandgaps are sensitive to the geometry parameters of the systems. The deformed displacement fields of the transient response of finite structures subjected to harmonic loads are presented to show the directional wave propagation. The research work in this paper is relevant to the practical design of cellular structures with enhanced vibro-acoustics performance.
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