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Ding C, Yu H, Yu H, Qin H. TP53 codon 72 polymorphism with hepatocellular carcinoma: a metaanalysis. J Int Med Res 2012; 40:446-54. [PMID: 22613405 DOI: 10.1177/147323001204000206] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE The association between codon 72 polymorphism of the tumour protein p53 (TP53) gene - which results in a missense mutation of arginine (R) to proline (P) - and susceptibility to hepatocellular carcinoma (HCC) is controversial. A metaanalysis was performed in order to define this relationship more precisely. METHODS Published studies of TP53 codon 72 polymorphism and the risk of HCC were identified. Data were extracted, and summary odds ratios (OR) and 95% confidence intervals (95% CI) were calculated. Pooled ORs were determined for an additive model (R/R versus P/P), a dominant model ([R/R + R/P] versus P/P) and a recessive model (R/R versus [R/P + P/P]). RESULTS The meta-analysis included seven case-control studies (total 1511 cases and 2165 controls). The risk of cancer was significantly decreased in the overall dominant model and the dominant model in Asian populations. A significantly decreased risk was found for all models in hospital-based but not population-based studies. There was no association between polymorphism and cancer risk when data were stratified according to hepatitis B or C virus infection status. CONCLUSION The TP53 codon 72 polymorphism may be a risk factor for HCC.
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Benveniste E, Qin H, Liu Y. O016 Inhibition of the JAK/STAT pathway protects against neuroinflammation. Cytokine 2012. [DOI: 10.1016/j.cyto.2012.06.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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78
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Jing Y, Qin H, Liu Q, Singh M, Zhu B. Synthesis and electrochemical performances of LiNiCuZn oxides as anode and cathode catalyst for low temperature solid oxide fuel cell. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2012; 12:5102-5105. [PMID: 22905585 DOI: 10.1166/jnn.2012.4940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Low temperature solid oxide fuel cell (LTSOFC, 300-600 degrees C) is developed with advantages compared to conventional SOFC (800-1000 degrees C). The electrodes with good catalytic activity, high electronic and ionic conductivity are required to achieve high power output. In this work, a LiNiCuZn oxides as anode and cathode catalyst is prepared by slurry method. The structure and morphology of the prepared LiNiCuZn oxides are characterized by X-ray diffraction and field emission scanning electron microscopy. The LiNiCuZn oxides prepared by slurry method are nano Li0.28Ni0.72O, ZnO and CuO compound. The nano-crystallites are congregated to form ball-shape particles with diameter of 800-1000 nm. The LiNiCuZn oxides electrodes exhibits high ion conductivity and low polarization resistance to hydrogen oxidation reaction and oxygen reduction reaction at low temperature. The LTSOFC using the LiNiCuZn oxides electrodes demonstrates good cell performance of 1000 mW cm(-2) when it operates at 470 degrees C. It is considered that nano-composite would be an effective way to develop catalyst for LTSOFC.
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Rao HY, Sun DG, Jiang D, Yang RF, Guo F, Wang JH, Liu F, Zhang HY, Zhang HH, Du SC, Jin Q, Qin H, Lok ASF, Wei L. IL28B genetic variants and gender are associated with spontaneous clearance of hepatitis C virus infection. J Viral Hepat 2012; 19:173-81. [PMID: 22329371 DOI: 10.1111/j.1365-2893.2011.01497.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Single nucleotide polymorphisms (SNPs) near the IL28B gene have been shown to be associated with response to treatment for chronic hepatitis C and also with spontaneous clearance of hepatitis C virus (HCV) infection. We analysed the association between IL28B genetic variants and spontaneous clearance of HCV infection in 376 HCV-infected Chinese paid plasma donors. Genotyping of eight SNPs near the IL28B region was performed by the iPLEX system (MassARRAY(®) SNP Genotyping; Sequenom) in all donors, and sequencing was performed on all 80 donors who cleared HCV and on 160 of 296 donors who did not clear HCV to validate the genotypes. Eighty (21.3%) donors spontaneously cleared HCV. Four SNPs were significantly associated with spontaneous HCV clearance: rs8099917 TT (vs GT), rs8105790 TT (vs CT), rs12980275 AA (vs AG) and rs10853728 CC (vs CG or GG) with OR (95% CI) 15.27 (2.07-112.50), 14.88 (2.02-109.72), 7.92 (1.88-33.32) and 2.32 (1.22-4.42) respectively. No association between the other four IL28B SNPs including rs12979860 and spontaneous HCV clearance was found. Women had a higher rate of spontaneous HCV clearance than men [56/213 (26.3%) vs 24/163 (14.6%), P = 0.007], and this was true even after stratification for IL28B genotypes with OR of 1.9-2.2 among those with favourable genotypes. Our results confirmed that IL28B polymorphism is associated with spontaneous clearance of HCV in Chinese subjects, but the SNPs that predict HCV clearance in Chinese subjects were different from those reported in Caucasians. Women were more likely to clear HCV infection regardless of IL28B genotypes.
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Shi C, Li S, Shi T, Liu B, Ding C, Qin H. Correlation between Thyroid Nodule Calcification Morphology on Ultrasound and Thyroid Carcinoma. J Int Med Res 2012; 40:350-7. [PMID: 22429375 DOI: 10.1177/147323001204000136] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE: This study investigated the detection of thyroid nodule calcifications on ultrasound and their relationship to thyroid carcinoma. METHODS: Microcalcifications (≤ 2 mm) and macrocalcifications (> 2 mm) on preoperative ultrasound examination of thyroid and lymph nodes were compared with postoperative pathological diagnoses in 4186 patients undergoing thyroid surgery. RESULTS: Higher incidences of micro- and macrocalcifications were found in patients with thyroid carcinoma than in those with benign disease. The incidence of malignant disease was significantly higher in patients with microcalcifications than those with macrocalcifications, suggesting that the presence of microcalcifications is a better predictor of malignant thyroid carcinoma than other calcification types. The specificity of microcalcifications for a diagnosis of malignant thyroid carcinoma was 96.5%. Microcalcifications were significantly more frequent in patients aged ≤ 45 years, but there was no difference between genders. The incidence of malignancy was significantly higher in patients with single nodule calcifications than in those with multiple nodule calcifications. Lymph node calcifications were seen in 12 patients, all of whom had papillary carcinoma. CONCLUSIONS: Thyroid microcalcifications are strongly associated with thyroid carcinoma, especially micropapillary carcinoma. When cervical lymph node calcification is present, immediate surgery is required.
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Shand J, Capitini C, Qin H, Fry T. Broad Expression of a Minor Histocompatibility Antigen Results in Impaired Antitumor Immunity That Cannot Be Overcome with Dendritic Cell Vaccination. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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82
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Zhou XB, Qin H, Li J, Wang B, Wang CB, Liu YM, Jia XD, Shi N. Platelet-targeted microbubbles inhibit re-occlusion after thrombolysis with transcutaneous ultrasound and microbubbles. ULTRASONICS 2011; 51:270-274. [PMID: 20888024 DOI: 10.1016/j.ultras.2010.09.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 07/05/2010] [Accepted: 09/01/2010] [Indexed: 05/29/2023]
Abstract
Microbubbles (MBs) can augment the acoustic cavitation' (US), thereby facilitating the thrombolysis of external ultrasound. But we observed re-thrombosis after successful thrombolysis by MBs and transcutaneous ultrasound in an endothelium injury model. This study was designed to explore whether platelet-targeted MBs can prevent the reformation of thrombi. Arterial injury was induced in canine femoral arteries with balloon, and the arteries were completely thrombotically occluded. The arteries were treated with intra-arterial MBs or platelet-targeted MBs (TMB) and transcutaneous low frequency ultrasound (LFUS) to achieve complete thrombolysis. The arterial flow was monitored with angiogram for 4h following treatment. Results showed that both MBs and TMBs produced successful dissolution of clots in the presence of ultrasound. The re-occlusion began to occur 1h after thrombolysis in MB/LFUS treatment, and 7 of 8 arteries were re-occluded within 3h. Most of the arteries (7 of 8) in the TMB/LFUS group remained patent for 4h following treatment. The flow tended to decrease after thrombolysis in MB/LFUS treatment. These results indicated that platelet-targeted microbubbles were beneficial in preventing re-thrombosis in vivo and microbubbles served as good carrier of thrombolytic and anticoagulation drugs.
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Liu Z, Qin H, Yang Z, Xia Y, Liu W, Yang J, Jiang Y, Zhang H, Yang Z, Wang Y, Zheng Q. Randomised clinical trial: the effects of perioperative probiotic treatment on barrier function and post-operative infectious complications in colorectal cancer surgery - a double-blind study. Aliment Pharmacol Ther 2011; 33:50-63. [PMID: 21083585 DOI: 10.1111/j.1365-2036.2010.04492.x] [Citation(s) in RCA: 177] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Infection following abdominal operation remains a major factor affecting the morbidity of patients after surgery. AIM To determine the effects of perioperative administration of probiotics on the gut barrier function and the surgical outcome in patients undergoing elective colorectal surgery. METHODS One hundred patients with colorectal carcinoma were randomly divided into the control group (n = 50) and the probiotics group (n = 50). The probiotics were given orally for 6 days preoperatively and 10 days post-operatively. Outcomes were measured by bacterial translocation, gut permeability, the effect on the faecal microbiota, and the clinical outcomes such as infectious-related complications and gut defecation function. RESULTS Compared with the control group, probiotics group had increased transepithelial resistance (P < 0.05), reduced transmucosal permeation of horseradish peroxidase and lactulose/mannitol ratio, reduced bacterial translocation (P < 0.05), decreased ileal-bile acid binding protein (P < 0.05) and positive rate of blood bacterial DNA (P < 0.05) and an enhanced mucosal tight junction protein expression. They had decreased blood enteropathogenic bacteria and increased faecal bacterial variety. The post-operative recovery of peristalsis, incidence of diarrhoea, and infectious-related complications were also improved. CONCLUSION Probiotics can improve the integrity of gut mucosal barrier by benefiting the faecal microbiota, and decreasing infectious complications in patients with colorectal cancer undergoing colorectomy.
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Xuqian W, Kanghua L, WeiHong Y, Xi Y, Rongping D, Qin H, Fangtian D, Chunhua Zhao R. Intraocular Transplantation of Human Adipose-Derived Mesenchymal Stem Cells in a Rabbit Model of Experimental Retinal Holes. Ophthalmic Res 2011; 46:199-207. [DOI: 10.1159/000323910] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Accepted: 12/22/2010] [Indexed: 12/13/2022]
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85
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Qin H, Liu B, Shi T, Liu Y, Sun Y, Ma Y. Tumour necrosis factor-alpha polymorphisms and hepatocellular carcinoma: a meta-analysis. J Int Med Res 2010; 38:760-8. [PMID: 20819413 DOI: 10.1177/147323001003800304] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The genetic basis of susceptibility to hepatocellular carcinoma (HCC) is poorly understood. To summarize the quantitative association between polymorphisms of the tumour necrosis factor-alpha (TNFA) gene and HCC, a meta-analysis of relevant studies was performed. Ten case-control studies involving 1421 HCC cases were identified from the Medline, Embase and Current Contents databases. Combined results based on all studies showed that patients with HCC had a significantly lower frequency of the TNFA gene polymorphism -308GG than healthy controls. When stratifying for race, results were similar among Asians and Caucasians. When comparing with hepatitis B virus infection cases, no statistical association was found. This meta-analysis suggests that TNFA -308GG gene polymorphism is associated with a modest decrease in the risk of HCC.
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86
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Subbarayan P, Qin H, Pillai S, Lee JJ, Pfendt AP, Willing G, Miller ME, Dennis VA, Singh SR. Expression and characterization of a multivalent human respiratory syncytial virus protein. Mol Biol 2010. [DOI: 10.1134/s0026893310030106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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87
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Subbarayan P, Qin H, Pillai S, Lee JJ, Pfendt AP, Willing G, Miller ME, Dennis VA, Singh SR. Expression and characterization of a multivalent human respiratory syncytial virus protein. Mol Biol (Mosk) 2010; 44:477-487. [PMID: 20608172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Respiratory syncytial virus (RSV) has been recognized as one of the most common causes of severe respiratory tract infection in infants worldwide. As yet, a safe and effective vaccine has not been developed to protect humans from RSV. The F and G surface proteins have been widely investigated due to their potential to induce protective immunity. In addition, the M2 protein has been shown to be important in inducing a T-cell response. Our project involved the cloning of the immunodominant regions of the RSV F, M2 and G proteins into a bacterial vector, pET-32a (+). The recombinant RFM2G protein was expressed in Escherichia coli and purified using His Bind columns. The purified rRFM2G protein was analyzed by polyacrylamide gel electrophoresis and Western blotting. The predicted structure of the recombinant protein built by the Swiss PDB Viewer program suggested a rod shape with a distinct swollen head and neck which was confirmed by transmission electron microscopy and atomic force microscopy. BALB/c female mice were immunized with either RSV, rRFM2G alone, or rRFM2G in combination with flagellin as a mucosal adjuvant. Serum was collected on days 0, 14, 28 and 49 to assess the immune response by Enzyme-linked immunosorbent assay. Intranasal immunization of mice with the rRFM2G protein yielded significantly high serum IgG titers. Co-administration of the rRFM2G protein with flagellin did not augment the serum antibody response.
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Liu Z, Zhang P, Zhou Y, Qin H, Shen T. Culture of human intestinal epithelial cell using the dissociating enzyme thermolysin and endothelin-3. Braz J Med Biol Res 2010; 43:451-9. [PMID: 20490432 DOI: 10.1590/s0100-879x2010007500036] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Accepted: 04/06/2010] [Indexed: 11/21/2022] Open
Abstract
Epithelium, a highly dynamic system, plays a key role in the homeostasis of the intestine. However, thus far a human intestinal epithelial cell line has not been established in many countries. Fetal tissue was selected to generate viable cell cultures for its sterile condition, effective generation, and differentiated character. The purpose of the present study was to culture human intestinal epithelial cells by a relatively simple method. Thermolysin was added to improve the yield of epithelial cells, while endothelin-3 was added to stimulate their growth. By adding endothelin-3, the achievement ratio (viable cell cultures/total cultures) was enhanced to 60% of a total of 10 cultures (initiated from 8 distinct fetal small intestines), allowing the generation of viable epithelial cell cultures. Western blot, real-time PCR and immunofluorescent staining showed that cytokeratins 8, 18 and mouse intestinal mucosa-1/39 had high expression levels in human intestinal epithelial cells. Differentiated markers such as sucrase-isomaltase, aminopeptidase N and dipeptidylpeptidase IV also showed high expression levels in human intestinal epithelial cells. Differentiated human intestinal epithelial cells, with the expression of surface markers (cytokeratins 8, 18 and mouse intestinal mucosa-1/39) and secretion of cytokines (sucrase-isomaltase, aminopeptidase N and dipeptidylpeptidase IV), may be cultured by the thermolysin and endothelin-3 method and maintained for at least 20 passages. This is relatively simple, requiring no sophisticated techniques or instruments, and may have a number of varied applications.
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Yang G, Deng YJ, Qin H, Zhu BF, Chen F, Shen CM, Sun ZM, Chen LP, Wu J, Mu HF, Lucas R. HLA-B*15 subtypes distribution in Han population in Beijing, China, as compared with those of other populations. Int J Immunogenet 2010; 37:205-12. [DOI: 10.1111/j.1744-313x.2010.00910.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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90
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Qin H, Dubnau J. Genetic disruptions of Drosophila Pavlovian learning leave extinction learning intact. GENES, BRAIN, AND BEHAVIOR 2010; 9:203-12. [PMID: 20015341 PMCID: PMC2866079 DOI: 10.1111/j.1601-183x.2009.00548.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Individuals who experience traumatic events may develop persistent posttraumatic stress disorder. Patients with this disorder are commonly treated with exposure therapy, which has had limited long-term success. In experimental neurobiology, fear extinction is a model for exposure therapy. In this behavioral paradigm, animals are repeatedly exposed in a safe environment to the fearful stimulus, which leads to greatly reduced fear. Studying animal models of extinction already has lead to better therapeutic strategies and development of new candidate drugs. Lack of a powerful genetic model of extinction, however, has limited progress in identifying underlying molecular and genetic factors. In this study, we established a robust behavioral paradigm to study the short-term effect (acquisition) of extinction in Drosophila melanogaster. We focused on the extinction of olfactory aversive 1-day memory with a task that has been the main workhorse for genetics of memory in flies. Using this paradigm, we show that extinction can inhibit each of two genetically distinct forms of consolidated memory. We then used a series of single-gene mutants with known impact on associative learning to examine the effects on extinction. We find that extinction is intact in each of these mutants, suggesting that extinction learning relies on different molecular mechanisms than does Pavlovian learning.
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Ma Y, Wang Y, Yang Z, Gao Q, Cheng Z, Qin H. The catenulaform of neuroblastoma. Postgrad Med J 2009; 85:336. [PMID: 19528312 DOI: 10.1136/pgmj.2008.072736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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92
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Qin H, Capitini C, Wayne A, Fry T. Post-Transplant Immunotherapy For Pediatric All. Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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93
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Ablikim M, Bai JZ, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chu YP, Dai YS, Diao LY, Deng ZY, Dong QF, Du SX, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, He KL, He M, Heng YK, Hou J, Hu HM, Hu JH, Hu T, Huang GS, Huang XT, Ji XB, Jiang XS, Jiang XY, Jiao JB, Jin DP, Jin S, Lai YF, Li G, Li HB, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XN, Li XQ, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu J, Liu Q, Liu RG, Liu ZA, Lou YC, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Mao ZP, Mo XH, Nie J, Ping RG, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Ruan XD, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tong GL, Wang DY, Wang L, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wang Z, Wei CL, Wei DH, Weng Y, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang YX, Ye MH, Ye YX, Yu GW, Yuan CZ, Yuan Y, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang SH, Zhang XY, Zhang Y, Zhang ZX, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Anomalous line shape of the cross section for e{+}e{-}--> hadrons in the center-of-mass energy region between 3.650 and 3.872 GeV. PHYSICAL REVIEW LETTERS 2008; 101:102004. [PMID: 18851209 DOI: 10.1103/physrevlett.101.102004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Indexed: 05/26/2023]
Abstract
We observe an obvious anomalous line shape of the e;{+}e;{-}--> hadrons total cross sections in the energy region between 3.700 and 3.872 GeV. It is inconsistent with the explanation for only one simple psi(3770) resonance with a statistical significance of 7sigma. The anomalous line shape may be explained by two possible enhancements of the inclusive hadron production near the center-of-mass energies of 3.764 and 3.779 GeV, indicating that either there is likely a new structure in addition to the psi(3770) resonance around 3.773 GeV, or there are some physics effects reflecting the DD[over ] production dynamics.
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Aitelli CL, Kirkpatrick HM, Qin H, Lichliter WE, Becerra CR, McCollum AD. Referral patterns and adjuvant chemotherapy use in patients with stage II colon cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.17515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Ablikim M, Bai JZ, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chu YP, Dai YS, Diao LY, Deng ZY, Dong QF, Du SX, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hou J, Hu HM, Hu JH, Hu T, Huang XT, Ji XB, Jiang XS, Jiang XY, Jiao JB, Jin DP, Jin S, Jin Y, Lai YF, Li G, Li HB, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XN, Li XQ, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu J, Liu Q, Liu RG, Liu ZA, Lou YC, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Mao ZP, Mo XH, Nie J, Olsen SL, Ping RG, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Ruan XD, Shan LY, Shang L, Shen CP, Shen DL, Shen XY, Sheng HY, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tong GL, Varner GS, Wang DY, Wang L, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang YF, Wang Z, Wang ZY, Wang Z, Wei CL, Wei DH, Wiedner U, Weng Y, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang YX, Ye MH, Ye YX, Yu GW, Yuan CZ, Yuan Y, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang SH, Zhang XY, Zhang Y, Zhang ZX, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Search for the invisible decay of J/psi in psi(2S) --> pi(+)pi(-) J/psi. PHYSICAL REVIEW LETTERS 2008; 100:192001. [PMID: 18518438 DOI: 10.1103/physrevlett.100.192001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2007] [Indexed: 05/26/2023]
Abstract
Using psi(2S) --> pi(+)pi(-) J/psi events in a sample of 14.0 x 10(6) psi(2S) decays collected with the BES-II detector, a search for the decay of the J/psi to invisible final states is performed. No signal is found, and an upper limit at the 90% confidence level is determined to be 1.2 x 10(-2) for the ratio B(J/psi --> invisible)/B(J/psi-->mu(+)mu(-)). This is the first search for J/psi decays to invisible final states.
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Ablikim M, Bai JZ, Bai Y, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen XD, Chen YB, Chu YP, Dai YS, Deng ZY, Du SX, Fang J, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hou J, Hu HM, Hu T, Huang GS, Huang XT, Huang YP, Ji XB, Jiang XS, Jiao JB, Jin DP, Jin S, Lai YF, Li HB, Li J, Li RY, Li WD, Li WG, Li XL, Li XN, Li XQ, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu JB, Liu JP, Liu HB, Liu J, Liu Q, Liu RG, Liu S, Liu ZA, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Malik MQA, Mao ZP, Mo XH, Nie J, Olsen SL, Ping RG, Qi ND, Qin H, Qiu JF, Rong G, Ruan XD, Shan LY, Shang L, Shen CP, Shen DL, Shen XY, Sheng HY, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tian JP, Tong GL, Varner GS, Wan X, Wang L, Wang LL, Wang LS, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wei CL, Wei DH, Weng Y, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang M, Yang YX, Ye MH, Ye YX, Yu CX, Yu GW, Yuan CZ, Yuan Y, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang XY, Zhang YY, Zhang ZX, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou BZL, Zhu KJ, Zhu QM, Zhu XW, Zhu YC, Zhu YS, Zhu ZA, Zhu ZL, Zhuang BA, Zou BS. Observation of Y(2175) in J/psi --> etaphif0 (980). PHYSICAL REVIEW LETTERS 2008; 100:102003. [PMID: 18352176 DOI: 10.1103/physrevlett.100.102003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Indexed: 05/26/2023]
Abstract
The decays of J/psi --> etaphif(0)(980)[eta --> gammagamma, phi --> K(+) K(-), f(0)(980) --> pi(+)pi(-)] are analyzed using a sample of 5.8 x 10(7) J/psi events collected with the BESII detector at the Beijing Electron-Positron Collider. A structure at around 2.18 GeV/c(2) with about 5 sigma significance is observed in the phif(0)(980) invariant mass spectrum. A fit with a Breit-Wigner function gives the peak mass and width of m = 2.186+/-0.010(stat)+/-0.006(syst) GeV/c(2) and Gamma = 0.065+/-0.023(stat)+/-0.017(syst) GeV/c(2), respectively, which are consistent with those of Y(2175), observed by the BABAR Collaboration in the initial-state radiation process e(+)e(-) --> gamma(ISR) phif(0)(980). The production branching ratio is determined to be Br(J/psi --> etaY(2175))Br(Y(2175)- -> phif(0)(980))Br(f(0)(980) --> pi(+)pi(-)) = [3.23+/-0.75(stat)+/-0.73(syst)] x 10(-4), assuming that the Y(2175) is a 1(--) state.
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Ablikim M, Bai JZ, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chu YP, Dai YS, Diao LY, Deng ZY, Dong QF, Du SX, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hou J, Hu HM, Hu JH, Hu T, Huang GS, Huang XT, Ji XB, Jiang XS, Jiang XY, Jiao JB, Jin DP, Jin S, Lai YF, Li G, Li HB, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XN, Li XQ, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu J, Liu Q, Liu RG, Liu ZA, Lou YC, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Mao ZP, Mo XH, Nie J, Olsen SL, Ping RG, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Ruan XD, Shan LY, Shang L, Shen CP, Shen DL, Shen XY, Sheng HY, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tong GL, Varner GS, Wang DY, Wang L, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wang Z, Wei CL, Wei DH, Weng Y, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang YX, Ye MH, Ye YX, Yu GW, Yuan CZ, Yuan Y, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang SH, Zhang XY, Zhang Y, Zhang ZX, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Measurements ofJ/ψandψ(2S)decays intoΛΛ¯π0andΛΛ¯η. Int J Clin Exp Med 2007. [DOI: 10.1103/physrevd.76.092003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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98
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Yan D, Zhang Y, Hong Y, Qin H. Dynamic Modulation of Radiotherapy Fractionation: A Simulation Study. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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99
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Ablikim M, Bai JZ, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chu YP, Dai YS, Diao LY, Deng ZY, Dong QF, Du SX, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hou J, Hu HM, Hu JH, Hu T, Huang GS, Huang XT, Ji XB, Jiang XS, Jiang XY, Jiao JB, Jin DP, Jin S, Lai YF, Li G, Li HB, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XN, Li XQ, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu JLQ, Liu RG, Liu ZA, Lou YC, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Mao ZP, Mo XH, Nie J, Olsen SL, Ping RG, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Ruan XD, Shan LY, Shang L, Shen CP, Shen DL, Shen XY, Sheng HY, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tong GL, Varner GS, Wang DY, Wang L, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang YF, Wang Z, Wang ZY, Wang Z, Wei CL, Wei DH, Weng Y, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang YX, Ye MH, Ye YX, Yu GW, Yuan CZ, Yuan Y, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang SH, Zhang XY, Zhang Y, Zhang ZX, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Measurement of psi2S radiative decays. PHYSICAL REVIEW LETTERS 2007; 99:011802. [PMID: 17678148 DOI: 10.1103/physrevlett.99.011802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2006] [Indexed: 05/16/2023]
Abstract
Using 14 x 10(6) psi(2S) events accumulated at the BESII detector, we report first measurements of branching fractions or upper limits for psi(2S) decays into gammapp, gamma2(pi+pi-), gammaKS0K+pi-+c.c., gammaK+K-pi+pi-, gammaK*0K-pi++c.c., gammaK*0K*0, gammapi+pi-pp, gamma2(K+K-), gamma3(pi+pi-), and gamma2(pi+pi-)K+K- with the invariant mass of hadrons below 2.9 GeV/c2. We also report branching fractions of psi(2S) decays into 2(pi+pi-)pi0, omegapi+pi-, omegaf2(1270), b1+/-pi-/+, and pi02(pi+pi-)K+K-.
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100
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Wang L, Qin H, Chen B, Xin X, Li J, Han H. Overexpressed active Notch1 induces cell growth arrest of HeLa cervical carcinoma cells. Int J Gynecol Cancer 2007; 17:1283-92. [PMID: 17425682 DOI: 10.1111/j.1525-1438.2007.00927.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Human cervical carcinoma is one of the most common malignant tumors, but the mechanisms that orchestrate the multiple oncogenic insults required for initiation and progression are not clear. Notch signaling plays a critical role in maintaining the balance between cell proliferation, differentiation, and apoptosis, but perturbed Notch signaling may contribute to tumorigenesis. We now show that Notch1 is detected in all cervical cancer, including advanced diseases. We also constitutively overexpressed active Notch1 in human cervical carcinoma to explore the effects of Notch1 signaling on human cervical carcinoma cell growth and to investigate the underlying molecular mechanisms. The signaling may participate in the development of human cervical carcinoma cells, but overexpressed active Notch1 inhibits their growth through induction of cell cycle arrest. Increased Notch1 signaling induced a downmodulation of human papillomavirus transcription through suppression of activator protein (AP)-1 activity by upregulation of c-Jun and the decreased expression of c-Fos. Thus, Notch1 signaling plays a key role and exerts dual effects, functioning in context-specific manner.
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