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Bie L, Li Y, Yuan H, Bondy M, Bainbridge M, Jhangiani S, Jalali A, Plon SE, Armstrong G, Bernstein J, Claus E, Davis F, Houlston R, Il'yasova D, Jenkins R, Johansen C, Lachance D, Lai R, Lau C, Merrell R, Olson S, Sadetzki S, Schildkraut J, Shete S, Barnholtz-Sloan J, Wrensch M, Consortium TG, Melin B, Gibbs RA, Haberler C, Czech T, Chocholous M, Dorfer C, Slavc I, Hayashi S, Sasaki H, Kimura T, Nakamura T, Miwa T, Hirose Y, Yoshida K, Jalali A, Bainbridge M, Jhangiani S, Plon SE, Armstrong G, Bernstein J, Claus E, Davis F, Houlston R, Il'yasova D, Jenkins R, Johansen C, Lachance D, Lai R, Lau C, Merrell R, Olson SH, Sadetzki S, Schildkraut J, Shete S, Barnholtz-Sloan J, Wrensch M, Melin B, Gibbs RA, Bondy M, Jenkins R, Wrensch M, Kollmeyer T, Armstrong G, Olson S, Lai R, Lachance D, Lau C, Claus E, Barnholtz-Sloan J, Il'yasova D, Schildkraut J, Houlston R, Shete S, Bernstein J, Davis F, Merrell R, Johansen C, Sadetzki S, Consortium TG, Melin B, Bondy M, Palmer J, Li J, Kenyon L, Andrews D, Kim L, Glass J, Werner-Wasik M, Shi W, Takayanagi S, Mukasa A, Aihara K, Saito K, Otani R, Tanaka S, Nakatomi H, Aburatani H, Ichimura K, Ueki K, Saito N, Walsh KM, Decker PA, Eckel-Passow JE, Molinaro AM, Hansen HM, Rice T, Zheng S, Kollmeyer T, Berger MS, Chang SM, Prados MD, Rynearson A, Caron A, Kosel ML, Lachance DH, O'Neill BP, Giannini C, Wiencke JK, Jenkins RB, Wrensch MR, Wang Z, Bao Z, Jiang T, Wang Z, Bao Z, Jiang T. MOLECULAR EPIDEMIOLGOY. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Amirian ES, Scheurer ME, Wrensch M, Olson SH, Lai R, Lachance D, Armstrong G, Zhou R, Wiemels J, Lau C, Claus E, Barnholtz-Sloan J, Il'yasova D, Schildkraut J, Houlston R, Shete S, Bernstein J, Jenkins R, Davis F, Merrell R, Johansen C, Sadetzki S, Melin B, Bondy M, Dardis C, Dembowska-Baginska B, Swieszkowska E, Drogosiewicz M, Polnik MP, Filipek I, Grudzinska M, Grajkowska W, Perek D, Flores K, Crawford J, Piccioni D, Lemus H, Lindsay S, Kesari S, Bricker P, Fonkem E, Ebue E, Song J, Harris F, Thawani N, DiPatre PL, Newell-Rogers MK, Fonkem E, Gittleman H, Kruchko C, Ostrom Q, Chen Y, Farah P, Ondracek A, Wolinsky Y, Barnholtz-Sloan J, Griffin J, Tobin R, Newell-Rogers MK, Ebwe E, Fonkem E, Johnson D, Leeper H, Uhm J, Lee A, Back M, Gzell C, Kastelan M, Wheeler H, Ostrom Q, Kruchko C, Gittleman H, Chen Y, Ondracek A, Farah P, Wolinsky Y, Barnholtz-Sloan J, Lopez E, Sepulveda C, Diego-Perez J, Betanzos Y, de Leon AP, Prabhu V, Perry E, Melian E, Barton K, Lee J, Anderson D, Urgoiti GR, Singh A, Tsang RY, Nordal R, Lim G, Chan J, Starreveld Y, de Robles P, Biagioni B, Hamilton M, Easaw J, Senerchia A, Eleuterio S, Souza E, Cappellano A, Seixas T, Cavalheiro S, Saba N, Torres-Carranza A, Canales-Martinez LC, Perez-Cardenas S, Miranda-Maldonado I, Barbosa-Quintana O, de Leon AMP, Umemura Y, Ronan L, van Zanten SV, Jansen M, van Vuurden D, Vandertop P, Kaspers GJ, Wallach J, LaSala P, Kalnicki S, Garg M, Wong TT, Ho DM, Chang KP, Yen SH, Guo WY, Chang FC, Liang ML, Chen HHS, Chen YW, Pan DHC, Chung WY, Yoo H, Jung KW, Lee SH, Shin SH, Ha J, Won YJ, Yoon H, Offor O, Helenowski I, Bhandari R, Raparia K, Marymont M, DeCamp M, de Hoyos A, Chandler J, Bendok B, Chmura S, Mehta M. EPIDEMIOLOLGY. Neuro Oncol 2013; 15:iii32-iii36. [PMCID: PMC3823890 DOI: 10.1093/neuonc/not175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023] Open
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Sun X, Lai R, Li J, Luo M, Wang Y, Sheng W. The -7351C/T polymorphism in the TPA gene and ischemic stroke risk: a meta-analysis. PLoS One 2013; 8:e53558. [PMID: 23326456 PMCID: PMC3541142 DOI: 10.1371/journal.pone.0053558] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 11/29/2012] [Indexed: 11/18/2022] Open
Abstract
Background A number of studies assessed the association of tissue plasminogen activator(TPA) gene polymorphisms with ischemic stroke, but the results were contradictory. We aimed to explore the role of TPA -7351C/T SNP in the susceptibility to ischemic stroke through a meta-analysis. Methods The PubMed, MEDLINE, EMBASE, China Biological Medicine Database and WANFANG DATA databases were searched until August 2012. The strict selection criteria and exclusion criteria were determined, and odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of associations. Stroke subtype was determined using Trial of Org 10172 in Acute Treatment criteria (TOAST). Statistical analyses were performed using the STATA12.0 software. Results A total of 2,299 ischemic stroke cases and 1,948 controls in seven case-control studies were included in the meta-analysis. Significant association between -7351C/T polymorphism in the TPA gene and ischemic stroke was observed in all comparison models (TT+CT versus CC, TT versus CT+CC and T versus C). In the subgroup analysis by ethnicity, TT homozygote carriers had a 142% increased risk of ischemic stroke compared with the C allele carriers among East-Asians (TT versus CT+CC: OR = 2.42, 95% CI = 1.07–5.48), but not in South-Asians and Caucasians, and significantly increased risks were found for T versus C among both East-Asians (OR = 1.33, 95% CI = 1.05–1.68) and Caucasians(OR = 1.16, 95% CI = 1.02–1.31). Further stratification for stroke subtype in three Caucasian studies showed the association between -7351C/T polymorphism and Large-artery atherosclerosis (LAA), but not Small-vessel occlusion (SVO) and Cardioembolism (CE). Conclusions This meta-analysis suggested that the -7351C/T polymorphism in TPA gene would be a risk factor for ischemic stroke, especially among East-Asians compared with Caucasians, but not in South-Asians, and it may play a role in the pathogenesis of LAA in Caucasians, but not in SVO and CE.
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Xu P, Shi M, Lai R, Chen XX. Differences in numbers of termicins expressed in two termite species affected by fungal contamination of their environments. GENETICS AND MOLECULAR RESEARCH 2012; 11:2247-57. [PMID: 22614454 DOI: 10.4238/2012.may.10.2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Termicin is a defensin-like antimicrobial peptide of termites that has strong antifungal activity. Fifty-six different termicin mRNAs encoding 46 different peptides were amplified and identified from Odontotermes formosanus (Termitidae), a species that inhabits environments with a large variety of microbial fauna. In contrast, only 38 different termicin mRNAs encoding 21 different peptides were amplified and identified from Reticulitermes chinensis (Rhinotermitidae). All mRNAs were amplified by reverse transcript PCR, with primers designed from reported termicin mRNA sequences. All of these genes showed high intraspecific sequence identity and were found to be highly homologous with other reported termicin genes. These two termite species live in different environments; the latter encounters relatively fewer pathogens in its habitat. We conclude that differences in microenvironmental pressure can affect the number of termicin genes expressed in termite species.
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Feng Y, Guo N, Sun Q, Chen X, Liu J, Lai R, Huang F. Open-label study of combination therapy with isoniazid for management of refractory neuropathic pain. J Clin Neurosci 2012; 19:1130-3. [DOI: 10.1016/j.jocn.2011.09.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 09/17/2011] [Accepted: 09/27/2011] [Indexed: 11/28/2022]
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Zhu F, Liang Y, Xia L, Rong M, Su C, Lai R, Li R, Ouyang G. Preparation and characterization of vinyl-functionalized mesoporous organosilica-coated solid-phase microextraction fiber. J Chromatogr A 2012; 1247:42-8. [DOI: 10.1016/j.chroma.2012.05.055] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 05/15/2012] [Accepted: 05/15/2012] [Indexed: 11/30/2022]
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Borbath I, Verbrugghe L, Lai R, Gigot J, Humblet Y, Piessevaux H, Sempoux C. Human equilibrative nucleoside transporter 1 (hENT1) expression is a potential predictive tool for response to gemcitabine in patients with advanced cholangiocarcinoma. Eur J Cancer 2012; 48:990-6. [DOI: 10.1016/j.ejca.2011.11.006] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 10/26/2011] [Accepted: 11/05/2011] [Indexed: 01/07/2023]
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Chong C, Fong L, Lai R, Lau WKO, Hartmann M, Chia SE. Erratum: The prevalence of lower urinary tract symptoms and treatment-seeking behaviour in males over 40 years in Singapore: a community-based study. Prostate Cancer Prostatic Dis 2012. [DOI: 10.1038/pcan.2012.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Reiman T, Lai R, Veillard AS, Paris E, Soria JC, Rosell R, Taron M, Graziano S, Kratzke R, Seymour L, Shepherd FA, Pignon JP, Sève P. Cross-validation study of class III beta-tubulin as a predictive marker for benefit from adjuvant chemotherapy in resected non-small-cell lung cancer: analysis of four randomized trials. Ann Oncol 2012; 23:86-93. [PMID: 21471564 PMCID: PMC3276322 DOI: 10.1093/annonc/mdr033] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Revised: 01/19/2011] [Accepted: 01/20/2011] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The IALT, JBR.10, ANITA and Cancer and Leukemia Group B 9633 trials compared adjuvant chemotherapy with observation for patients with resected non-small-cell lung cancer (R-NSCLC). Data from the metastatic setting suggest high tumor class III beta-tubulin (TUBB3) expression is a determinant of insensitivity to tubulin-targeting agents (e.g. vinorelbine, paclitaxel). In 265 patients from JBR.10 (vinorelbine-cisplatin versus observation), high TUBB3 was an adverse prognostic factor and was associated (nonsignificantly) with 'greater' survival benefit from chemotherapy. We explored this further in additional patients from JBR.10 and the other three trials. PATIENTS AND METHODS TUBB3 immunohistochemical staining was scored for 1149 patients on the four trials. The original JBR.10 cut-off scores were used to classify tumors as TUBB3 high or low. The prognostic and predictive value of TUBB3 on disease-free survival (DFS) and overall survival (OS) was assessed by Cox models stratified by trial and adjusted for clinical factors. RESULTS High TUBB3 expression was prognostic for OS [hazard ratio (HR)=1.27 (1.07-1.51), P=0.008) and DFS [HR=1.30 (1.11-1.53), P=0.001). TUBB3 was not predictive of a differential treatment effect [interaction P=0.20 (OS), P=0.23 (DFS)]. Subset analysis (n=420) on vinorelbine-cisplatin gave similar results. CONCLUSIONS The prognostic effect of high TUBB3 expression in patients with R-NSCLC has been validated. We were unable to confirm a predictive effect for TUBB3.
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Hu P, Lai R, Xie D. Gentamicin affects connexin 26 expression in the cochlear lateral wall. B-ENT 2012; 8:77-84. [PMID: 22896926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
OBJECTIVES/HYPOTHESIS Aminoglycosides may decrease the expression of some proteins participating in ion-exchange in the cochlear lateral wall. Connexin 26 expression in the lateral wall may play a role in acquired hearing loss by maintaining the endocochlear potential and potassium concentration in the endolymph. We examined the effects of gentamicin on the expression of connexin 26 to obtain a better understanding of aminoglycoside ototoxicity. METHODS We detected changes in connexin 26 protein and mRNA expression in the cochlear lateral wall using immunohistochemistry staining, western blotting, and real-time PCR in rats after administration of a single dose of gentamicin. RESULTS The expression of connexin 26 increased over time in type III fibrocytes after gentamicin administration. Elevated protein levels were detected 3 h after the single injection of gentamicin; while, mRNA levels increased after 24 h. CONCLUSION Connexin 26 plays an important role in the acute effects of high-dose gentamicin and is probably involved in the pathogenesis of ototoxic deafness.
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An S, Ma D, Wei JF, Yang X, Yang HW, Yang H, Xu X, He S, Lai R. A novel allergen Tab y 1 with inhibitory activity of platelet aggregation from salivary glands of horseflies. Allergy 2011; 66:1420-7. [PMID: 21848516 DOI: 10.1111/j.1398-9995.2011.02683.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Horsefly sting causes allergic reactions in human body. However, our knowledge on horsefly allergens remains poor. OBJECTIVES To identify the novel horsefly allergens and characterize their properties. METHODS A native allergen protein Tab y 1 (apyrase) was purified from the salivary glands of the horsefly Tabanus yao Macquart by gel filtration and ion exchange chromatography. Its sequence was determined by Edman degradation and cDNA cloning. Its allergenicity was assessed by immunoblotting for specific IgE, basophil activation test, skin prick test (SPT), and competitive enzyme-linked immunosorbent assay (ELISA). RESULTS Tab y 1 showed a single diffusion band of 70 kDa on SDS-PAGE. Seventy percent (7/10) of patients with horsefly allergy tested positive to Tab y 1 in SPT; sera from 81% (30/37) of patients reacted to Tab y 1 on western blots. Purified Tab y 1 reduced approximately 42% sera IgE reactivity to horsefly salivary gland extract on a competitive ELISA. Tab y 1 upregulated the expression of CD63 and CCR3 on passively sensitized basophils by up to approximately 4.9-fold. Tab y 1 also showed enzymatic activity to hydrolyze ATP and ADP, and potent antiplatelet aggregation and antithrombotic activities. CONCLUSION The current work identified a novel major allergen of horsefly, Tab y 1, with antiplatelet aggregation and antithrombotic activities, which implicates Tab y 1 in helping horseflies suck host blood, meanwhile causing allergy in their human hosts.
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Wong B, Lai R, Chan P, Lee N. A hospital outbreak of seasonal influenza involving three health care workers – implications on the optimal choice of respiratory protection. BMC Proc 2011. [PMCID: PMC3239512 DOI: 10.1186/1753-6561-5-s6-p100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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Feng YQ, Guo N, Liu JX, Lai R, Chen X, Huang F. A 65-year-old man with infratentorial diffuse encephalopathy and hydrocephalus. Chin Med J (Engl) 2011; 124:1758-1760. [PMID: 21740794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Tuberculous encephalopathy (TBE) is an important diagnosis in countries with a high prevalence of tuberculosis. TBE is a life-threatening condition but rarely reported in the modern literature. We reported a case of a man with extensive parenchymal lesions involving the brainstem and right cerebellar hemisphere that resolved after treatment. The clinical, laboratory and pathological features of this case are highlighted and the pathogenesis is discussed.
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Lai R, Xie L, Wu X, Zhang S, Du Y, Zhao S, Zheng Y, Sun Y, LI H, Chen J, LI Z, Liu L, Tang X, Wang L, Wang Y, Han M, Liu C, Wang J, Li H, Liu S. Gene expression signature comparison for solid tumor chemotherapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21045] [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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Feng Y, Guo N, Huang F, Chen X, Sun Q, Liu J, Lai R. Radiculomyelitis due to atypical tuberculous infection: 4 cases report. J Neurol Neurosurg Psychiatry 2011; 82:585-7. [PMID: 20581415 DOI: 10.1136/jnnp.2009.198556] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ma D, Xu X, An S, Liu H, Yang X, Andersen JF, Wang Y, Tokumasu F, Ribeiro JMC, Francischetti IMB, Lai R. A novel family of RGD-containing disintegrins (Tablysin-15) from the salivary gland of the horsefly Tabanus yao targets αIIbβ3 or αVβ3 and inhibits platelet aggregation and angiogenesis. Thromb Haemost 2011; 105:1032-45. [PMID: 21475772 DOI: 10.1160/th11-01-0029] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Accepted: 02/08/2011] [Indexed: 11/05/2022]
Abstract
A novel family of RGD-containing molecules (Tablysin-15) has been molecularly characterised from the salivary gland of the haematophagous horsefly Tabanus yao. Tablysin-15 does not share primary sequence homology to any disintegrin discovered so far, and displays an RGD motif in the N-terminus of the molecule. It is also distinct from disintegrins from Viperidae since its mature form is not released from a metalloproteinase precursor. Tablysin-15 exhibits high affinity binding for platelet αIIbβ3 and endothelial cell αVβ3 integrins, but not for α5β1 or α2β1. Accordingly, it blocks endothelial cell adhesion to vitronectin (IC50 ~1 nM) and marginally to fibronectin (IC50 ~1 μM), but not to collagen. It also inhibits fibroblast growth factor (FGF)-induced endothelial cell proliferation, and attenuates tube formation in vitro. In platelets, Tablysin-15 inhibits aggregation induced by collagen, ADP and convulxin, and prevents static platelet adhesion to immobilised fibrinogen. In addition, solid-phase assays and flow cytometry demonstrates that αIIbβ3 binds to Tablysin-15. Moreover, immobilised Tablysin-15 supports platelet adhesion by a mechanism which was blocked by anti-integrin αIIbβ3 monoclonal antibody (e.g. abciximab) or by EDTA. Furthermore, Tablysin-15 dose-dependently attenuates thrombus formation to collagen under flow. Consistent with these findings, Tablysin-15 displays antithrombotic properties in vivo suggesting that it is a useful tool to block αIIbβ3, or as a prototype to develop antithrombotics. The RGD motif in the unique sequence of Tablysin-15 represents a novel template for studying the structure-function relationship of the disintegrin family of inhibitors.
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Perrone G, Morini S, Santini D, Rabitti C, Vincenzi B, Alloni R, Antinori A, Magistrelli P, Lai R, Cass C, Mackey JR, Coppola R, Tonini G, Onetti Muda A. Human equilibrative nucleoside transporter 1 and carcinoma of the ampulla of Vater: expression differences in tumour histotypes. Eur J Histochem 2011; 54:e38. [PMID: 20839414 PMCID: PMC3167316 DOI: 10.4081/ejh.2010.e38] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The human equilibrative nucleoside transporter 1 (hENT1) is the major means by which gemcitabine enters human cells; recent evidence exists that hENT1 is expressed in carcinoma of the ampulla of Vater and that it should be considered as a molecular prognostic marker for patients with resected ampullary cancer. Aim of the present study is to evaluate the variations of hENT1 expression in ampullary carcinomas and to correlate such variations with histological subtypes and clinicopathological parameters. Forty-one ampullary carcinomas were histologically classified into intestinal, pancreaticobiliary and unusual types. hENT1 and Ki67 expression were evaluated by immunohistochemistry, and apoptotic cells were identified by the terminal deoxynucleotidyl transferase mediated deoxyuridine triphosphate biotin nick end labelling (TUNEL) method. hENT1 overexpression was detected in 63.4% ampullary carcinomas. A significant difference in terms of hENT1 and Ki67 expression was found between intestinal vs. pancreaticobiliary types (P=0.03 and P=0.009 respectively). Moreover, a significant statistical positive correlation was found between apoptotic and proliferative Index (P=0.036), while no significant correlation was found between hENT1 and apoptosis. Our results on hENT1 expression suggest that classification of ampullary carcinoma by morphological subtypes may represent an additional tool in prospective clinical trials aimed at examining treatment efficacy; in addition, data obtained from Ki67 and TUNEL suggest a key role of hENT1 in tumour growth of ampullary carcinoma.
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Ma D, Li Y, Dong J, An S, Wang Y, Liu C, Yang X, Yang H, Xu X, Lin D, Lai R. Purification and characterization of two new allergens from the salivary glands of the horsefly, Tabanus yao. Allergy 2011; 66:101-9. [PMID: 20608917 DOI: 10.1111/j.1398-9995.2010.02435.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Horsefly bite can cause allergic reactions in humans. There is no information about allergenic horsefly proteins. OBJECTIVES The current work aims to purify and characterize IgE-binding proteins from horsefly salivary glands. METHODS Two IgE-binding proteins, Tab a 1 and Tab a 2 with molecular weight of 26 and 35 kd, respectively, were purified and characterized from 60,000 pairs of horsefly salivary glands of Tabanus yao, respectively. Their primary sequences were determined by Edman degradation and cDNA cloning. Their allergenicity was examined using enzyme-linked immunosorbent assay (ELISA), ELISA inhibition tests, and immunoblots. RESULTS Immunoblotting demonstrated IgE binding by 32 and 34 of 37 (86.5% and 91.8%) subjects' sera to Tab a 1 and Tab a 2, respectively. They were identified as an antigen 5-related (Ag 5) protein and hyaluronidase, respectively. ELISA inhibitions of serum IgE reactivity to the horsefly salivary gland extract (SGE) using purified Tab a 1 and Tab a 2 were significant (about 45%). In addition, these proteins showed some IgE-binding capacity to sera of subjects with wasp sting allergy. CONCLUSIONS We have first identified and characterized two IgE-binding proteins, Tab a 1, an Ag 5-like protein and Tab a 2, a hyaluronidase, from the horsefly salivary glands. They appear to be of importance for the allergic reactions induced by horsefly bite. These allergens are thus not only found in stinging but also found in hematophagous insects. These results also provided support for the presence of the so-called wasp-horsefly syndrome (WHS).
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Wang P, Wu F, Zhang J, McMullen T, Young LC, Ingham RJ, Li L, Lai R. Serine phosphorylation of NPM-ALK, which is dependent on the auto-activation of the kinase activation loop, contributes to its oncogenic potential. Carcinogenesis 2010; 32:146-53. [DOI: 10.1093/carcin/bgq229] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Xu D, Wei J, Cui H, Gong J, Yan Y, Lai R, Qin Q. Differential profiles of gene expression in grouper Epinephelus coioides, infected with Singapore grouper iridovirus, revealed by suppression subtractive hybridization and DNA microarray. JOURNAL OF FISH BIOLOGY 2010; 77:341-360. [PMID: 20646160 DOI: 10.1111/j.1095-8649.2010.02676.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Suppression subtractive hybridization (SSH) was used to generate a subtracted cDNA library enriched with gene transcripts differentially expressed in the spleen of orange-spotted grouper Epinephelus coioides after 5 days of infection with Singapore grouper iridovirus (SGIV). In the forward and reverse-subtracted libraries, 260 and 153 non-redundant expressed sequence tags (EST), respectively, were identified. These annotated genes responding to SGIV infection were grouped into eight gene categories related to immunity, cell structure, transcription-translation, cell signalling, metabolism, mitochondrial proteins, ribosomal proteins and unknown or hypothetical proteins. A DNA microarray containing all the differentially expressed genes was constructed, and the gene expression patterns in different tissues were investigated in virus-infected E. coioides. Of these genes, four associated with the infection processes were identified and further investigated by quantitative real-time PCR. These results provide new insights into the molecular basis of host-pathogen interactions in E. coioides, and will help the development of control strategies against SGIV infection.
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Craik AC, Veldhoen RA, Czernick M, Buckland TW, Kyselytzia K, Ghosh S, Lai R, Damaraju S, Underhill DA, Mackey JR, Goping IS. The BH3-only protein Bad confers breast cancer taxane sensitivity through a nonapoptotic mechanism. Oncogene 2010; 29:5381-91. [DOI: 10.1038/onc.2010.272] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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McMullen TPW, Lai R, Dabbagh L, Wallace TM, de Gara CJ. Survival in rectal cancer is predicted by T cell infiltration of tumour-associated lymphoid nodules. Clin Exp Immunol 2010; 161:81-8. [PMID: 20408858 PMCID: PMC2940152 DOI: 10.1111/j.1365-2249.2010.04147.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2010] [Indexed: 12/23/2022] Open
Abstract
Lymphoid nodules are a normal component of the mucosa of the rectum, but little is known about their function and whether they contribute to the host immune response in malignancy. In rectal cancer specimens from patients with local (n=18), regional (n=12) and distant (n=10) disease, we quantified T cell (CD3, CD25) and dendritic cell (CD1a, CD83) levels at the tumour margin as well as within tumour-associated lymphoid nodules. In normal tissue CD3+, but not CD25+, T cells are concentrated at high levels within lymphoid nodules, with significantly fewer cells found in surrounding normal mucosa (P=0.001). Mature (CD83), but not immature (CD1a), dendritic cells in normal tissue are also found clustered almost exclusively within lymphoid nodules (P=<0.0001). In rectal tumours, both CD3+ T cells (P=0.004) and CD83+ dendritic cells (P=0.0001) are also localized preferentially within tumour-associated lymphoid nodules. However, when comparing tumour specimens to normal rectal tissue, the average density of CD3+ T cells (P=0.0005) and CD83+ dendritic cells (P=0.0006) in tumour-associated lymphoid nodules was significantly less than that seen in lymphoid nodules in normal mucosa. Interestingly, regardless of where quantified, T cell and dendritic cell levels did not depend upon the stage of disease. Increased CD3+ T cell infiltration of tumour-associated lymphoid nodules predicted improved survival, independent of stage (P=0.05). Other T cell (CD25) markers and different levels of CD1a+ or CD83+ dendritic cells did not predict survival. Tumour-associated lymphoid nodules, enriched in dendritic cells and T cells, may be an important site for antigen presentation and increased T cell infiltration may be a marker for improved survival.
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Larocque MP, Syme A, Yahya A, Wachowicz K, Allalunis-Turner J, Lai R, Fallone BG. MO-D-204B-09: Characterization of ADC and T2 Responses of Tumor Tissue to Radiation with Histological Interpretation. Med Phys 2010. [DOI: 10.1118/1.3469070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Lai R, Recht LD, Reardon DA, Paleologos N, Groves MD, Rosenfeld MR, Meech S, Davis TA, Pavlov D, Sampson JH. Interim data for ACT III: Phase II trial of PF-04948568 (CDX-110) in combination with temozolomide (TMZ) in patients (pts) with glioblastoma (GBM). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.2014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Lai R. NEURO-ONCOLOGY: THE ESSENTIALS, SECOND EDITION. Neurology 2010. [DOI: 10.1212/wnl.0b013e3181d6b176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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