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Tabata T, Petitt M, Fang-Hoover J, Rivera J, Nozawa N, Shiboski S, Inoue N, Pereira L. Cytomegalovirus impairs cytotrophoblast-induced lymphangiogenesis and vascular remodeling in an in vivo human placentation model. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 181:1540-59. [PMID: 22959908 DOI: 10.1016/j.ajpath.2012.08.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 07/13/2012] [Accepted: 08/01/2012] [Indexed: 01/30/2023]
Abstract
We investigated human cytomegalovirus pathogenesis by comparing infection with the low-passage, endotheliotropic strain VR1814 and the attenuated laboratory strain AD169 in human placental villi as explants in vitro and xenografts transplanted into kidney capsules of SCID mice (ie, mice with severe combined immunodeficiency). In this in vivo human placentation model, human cytotrophoblasts invade the renal parenchyma, remodel resident arteries, and induce a robust lymphangiogenic response. VR1814 replicated in villous and cell column cytotrophoblasts and reduced formation of anchoring villi in vitro. In xenografts, infected cytotrophoblasts had a severely diminished capacity to invade and remodel resident arteries. Infiltrating lymphatic endothelial cells proliferated, aggregated, and failed to form lymphatic vessels. In contrast, AD169 grew poorly in cytotrophoblasts in explants, and anchoring villi formed normally in vitro. Likewise, viral replication was impaired in xenografts, and cytotrophoblasts retained invasive capacity, but some partially remodeled blood vessels incorporated lymphatic endothelial cells and were permeable to blood. The expression of both vascular endothelial growth factor (VEGF)-C and basic fibroblast growth factor increased in VR1814-infected explants, whereas VEGF-A and soluble VEGF receptor-3 increased in those infected with AD169. Our results suggest that viral replication and paracrine factors could undermine vascular remodeling and cytotrophoblast-induced lymphangiogenesis, contributing to bleeding, hypoxia, and edema in pregnancies complicated by congenital human cytomegalovirus infection.
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Antunes P, Viana P, Vinhas T, Rivera J, Gaspar EMSM. Emission profiles of polychlorinated dibenzodioxins, polychlorinated dibenzofurans (PCDD/Fs), dioxin-like PCBs and hexachlorobenzene (HCB) from secondary metallurgy industries in Portugal. CHEMOSPHERE 2012; 88:1332-1339. [PMID: 22704215 DOI: 10.1016/j.chemosphere.2012.05.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 04/19/2012] [Accepted: 05/19/2012] [Indexed: 06/01/2023]
Abstract
This paper reports, for the first time, a study of dioxin emissions from 10 siderurgies and metallurgies, secondary copper, aluminum and lead metallurgies, in Portugal. The study reports the emission factors and total emission amounts of PCDD/Fs, dioxin-like PCBs and hexachlorobenzene (HCB). The congener patterns were characterized and are discussed. The results showed that the total amount of PCDFs is higher than PCDDs in flue gas of each industrial unit. The toxic equivalent emission factors of pollutants emitted are 3098-3338 ngI-TEQt(-1) for PCDD/Fs and 597-659 ng I-TEQt(-1) for dioxin-like PCBs in siderurgies production (total estimated emission amounts released to atmosphere of 3.9-4.5 g I-TEQyr(-1)), 50-152 ng I-TEQt(-1) for PCDD/Fs and 24-121 ng I-TEQt(-1) for dioxin-like PCBs in ferrous foundries production (total estimated emission amounts released to atmosphere of 0.0010-0.0016 g I-TEQyr(-1)) and 5.8-5715 ng I-TEQt(-1) for PCDD/Fs and 0.49-259 ng I-TEQt(-1) for dioxin-like PCBs in non-ferrous foundries production (total estimated emission amounts released to atmosphere of 0.00014-0.12 g I-TEQyr(-1)). The HCB emission from siderurgies production is 0.94-3.2 mg t(-1) (total estimated emission amounts released 0.94-3.8 g yr(-1)), being much smaller, residual, in the emissions of the other types of plants (0.0012-0.026 mg t(-1) production and total estimated emission amounts released to atmosphere of 0.013-1.7 mg yr(-1)).
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Tota-Maharaj R, Blaha MJ, McEvoy JW, Blumenthal RS, Muse ED, Budoff MJ, Shaw LJ, Berman DS, Rana JS, Rumberger J, Callister T, Rivera J, Agatston A, Nasir K. Coronary artery calcium for the prediction of mortality in young adults <45 years old and elderly adults >75 years old. Eur Heart J 2012; 33:2955-62. [DOI: 10.1093/eurheartj/ehs230] [Citation(s) in RCA: 137] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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Tello-Montoliu A, Jover E, Rivera J, Valdés M, Angiolillo DJ, Marín F. New perspectives in antiplatelet therapy. Curr Med Chem 2012; 19:406-27. [PMID: 22335515 DOI: 10.2174/092986712803414240] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 09/26/2011] [Accepted: 09/28/2011] [Indexed: 11/22/2022]
Abstract
Platelet activation is a complex mechanism of response to vascular injury and atherothrombotic disease, leading to thrombus formation. A wide variety of surface receptors -integrins, leucine-rich family receptors, G protein coupled receptors, tyrosine kinase receptors- and intraplatelet molecules support and regulate platelet activation. They are potential targets of antiplatelet therapy for the prevention and treatment of arterial thrombosis. Despite the overall clinical benefit of established antiplatelet drugs targeting cyclooxigenase-1 (COX-1), glycoprotein integrin αIIbβ3, and the purinergic P2Y(12) receptor of adenosine diphosphate, a significant proportion of treated patients continue to experience recurrent ischaemic events. This may be in partly attributed to insufficient inhibition of platelet activation. In addition, it should not be underestimated that these drugs are not immune from bleeding complications. The substantial progress in understating the regulation of platelet activation has played a key role in the development of novel antiplatelet agents. Current examples of drug under development and evaluation include: novel P2Y(12) receptor inhibitors (prasugrel, ticagrelor, cangrelor, and elinogrel), thrombin receptor PAR-1 antagonists (vorapaxar, atopaxar), new integrin glycoprotein IIb/IIIa inhibitors, and inhibitors targeting the thromboxane receptor (TP), phosphodiesterases, the collagen receptor glycoprotein VI, and intraplatelet signalling molecules. This review summarizes the mechanisms of action and current clinical evaluation of these novel antiplatelet agents.
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Rossman A, Melgar J, Walker D, Gonzales A, Ramirez T, Rivera J. First Report of Dolabra nepheliae Associated with Corky Bark Disease of Rambutan and Pulasan in Honduras. PLANT DISEASE 2012; 96:765. [PMID: 30727564 DOI: 10.1094/pdis-01-12-0081-pdn] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In the last decade, rambutan (Nephelium lappaceum L., Sapindaceae) and pulasan (N. mutabile Blume) have been cultivated in Honduras to produce exotic fruits for export to North America (2). Recently, a disease was observed that produces dark brown to black fissured cankers from 1 to 3 cm long and 1 to 4 cm wide. The infected bark tissue becomes swollen with the middle region 3 to 8 mm thick. Symptoms appear when the trees are approximately 3 years old. As the trees mature, the cankers increase in size and weaken the branches, often resulting in breakage with the weight of the fruit causing substantial plant damage and fruit loss. In August 2010, fissured branch samples of rambutan and pulasan were collected from 6- to 8-year-old trees from the Humid Tropical Demonstrative Agroforestry Center in Honduras, Atlantida, La Masica (15°33'47.4″N, 87°05'2.5″W, elevation 106 m). A fungus associated with the cankers was identified as Dolabra nepheliae. It produces black, stipitate, elongate ascomata, 312 to 482 × 250 to 281 μm with broadly cylindric, bitunicate asci, 120 to 138 × 11.2 to 15.0 μm, and filiform, hyaline ascospores, 128 to 135 × 2.8 to 3.2 μm. Fungi from rambutan and pulasan were isolated on cornmeal agar plus 0.5% dextrose and antibiotics. On potato dextrose agar, the ascospores produced slow-growing colonies, 5 mm per week. In culture, isolates from both hosts produced pycnidia with elongated, slightly to strongly curved or S-shaped, hyaline conidia, 22.8 to 46.4 × 2.8 to 3.7 μm. This fungus was first reported on rambutan and pulasan from Malaysia (1,4), and later reported on rambutan and litchi in Hawaii and Puerto Rico (3). To our knowledge, this is the first report of D. nepheliae on pulasan and rambutan from Honduras. Specimens have been deposited at the U.S. National Fungus Collections (BPI 882442 on N. lappaceum and BPI 882443 on N. mutabile). Cultures were deposited at the Centraalbureau voor Schimmelcultures (CBS) as CBS 131490 on N. lappaceum and CBS 131491 on N. mutabile. Sequences of the internal transcribed spacer (ITS) region including ITS1, 5.8S, and ITS2 intergenic spacers were deposited in GenBank (Accession No. JQ004281 on N. lappaceum and Accession No. JQ004280 on N. mutabile). A BLAST search and pairwise comparison using the GenBank web server were used to compare ITS sequence data and recovered the following results: (i) CBS 131490 on N. lappaceum is 99% (538 of 544) identical to D. nepheliae CBS 123297 on Litchi chinensis from Puerto Rico; and (ii) CBS 131491 on N. mutabile is 99% (527 of 533) identical to the same strain of D. nepheliae. On the basis of the ITS sequence data, the isolates from Honduras were confirmed as the same species, D. nepheliae from Puerto Rico. Efforts to develop resistant germplasm and management strategies to control this disease have been initiated. References: (1) C. Booth and W. P. Ting. Trans. Brit. Mycol. Soc. 47:235, 1964. (2) T. Ramírez et al. Manual Para el Cultivo de Rambutan en Honduras. Fundación Hondureña de Investigación Agrícola. La Lima, Cortes, Honduras, 2003. (3) A. Y. Rossman et al. Plant Dis. 91:1685, 2007. (4) H. Zalasky et al. Can. J. Bot. 49:559, 1971.
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Browning M, Dempsey D, Guiza V, Becerra S, Rivera J, Russell B, Höök M, Clubb F, Miller M, Fossum T, Dong J, Bergeron A, Hahn M, Cosgriff-Hernandez E. Multilayer vascular grafts based on collagen-mimetic proteins. Acta Biomater 2012; 8:1010-21. [PMID: 22142564 DOI: 10.1016/j.actbio.2011.11.015] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 10/14/2011] [Accepted: 11/11/2011] [Indexed: 12/20/2022]
Abstract
A major roadblock in the development of an off-the-shelf, small-caliber vascular graft is achieving rapid endothelialization of the conduit while minimizing the risk of thrombosis, intimal hyperplasia, and mechanical failure. To address this need, a collagen-mimetic protein derived from group A Streptococcus, Scl2.28 (Scl2), was conjugated into a poly(ethylene glycol) (PEG) hydrogel to generate bioactive hydrogels that bind to endothelial cells (ECs) and resist platelet adhesion. The PEG-Scl2 hydrogel was then reinforced with an electrospun polyurethane mesh to achieve suitable biomechanical properties. In the current study, initial evaluation of this multilayer design as a potential off-the-shelf graft was conducted. First, electrospinning parameters were varied to achieve composite burst pressure, compliance, and suture retention strength that matched reported values of saphenous vein autografts. Composite stability following drying, sterilization, and physiological conditioning under pulsatile flow was then demonstrated. Scl2 bioactivity was also maintained after drying and sterilization as indicated by EC adhesion and spreading. Evaluation of platelet adhesion, aggregation, and activation indicated that PEG-Scl2 hydrogels had minimal platelet interactions and thus appear to provide a thromboresistant blood contacting layer. Finally, evaluation of EC migration speed demonstrated that PEG-Scl2 hydrogels promoted higher migration speeds than PEG-collagen analogs and that migration speed was readily tuned by altering protein concentration. Collectively, these results indicate that this multilayer design warrants further investigation and may have the potential to improve on current synthetic options.
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Marcucci CE, Samad Z, Rivera J, Adams DB, Philips-Bute BG, Mahajan A, Douglas PS, Aronson S, Mackensen GB, Podgoreanu MV, Mathew JP, Swaminathan M. A Comparative Evaluation of Transesophageal and Transthoracic Echocardiography for Measurement of Left Ventricular Systolic Strain Using Speckle Tracking. J Cardiothorac Vasc Anesth 2012; 26:17-25. [PMID: 21835637 DOI: 10.1053/j.jvca.2011.06.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Indexed: 11/11/2022]
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Hu JCY, Seo BK, Neri QV, Rozenwaks Z, Palermo GD, Fields T, Neri QV, Monahan D, Rosenwaks Z, Palermo GD, Szkodziak P, Plewka K, Wozniak S, Czuczwar P, Mroczkowski A, Lorenzo Leon C, Hernandez J, Chinea Mendez E, Concepcion Lorenzo C, Sanabria Perez V, Puopolo M, Palumbo A, Toth B, Franz C, Montag M, Boing A, Strowitzki T, Nieuwland R, Griesinger G, Schultze-Mosgau A, Cordes T, Depenbusch M, Diedrich K, Vloeberghs V, Verheyen G, Camus M, Van de Velde H, Goossens A, Tournaye H, Coppola G, Di Caprio G, Wilding M, Ferraro P, Esposito G, Di Matteo L, Dale R, Coppola G, Dale B, Daoud S, Auger J, Wolf JP, Dulioust E, Lafuente R, Lopez G, Brassesco M, Hamad M, Montenarh M, Hammadeh M, Robles F, Magli MC, Crippa A, Pescatori E, Ferraretti AP, Gianaroli L, Zahiri M, Movahedin M, Mowla SJ, Noruzinia M, Crippa A, Ferraretti AP, Magli MC, Crivello AM, Robles F, Gianaroli L, Sermondade N, Dupont C, Hafhouf E, Cedrin-Durnerin I, Poncelet C, Benzacken B, Levy R, Sifer C, Ferfouri F, Boitrelle F, Clement P, Molina Gomes D, Bailly M, Selva J, Vialard F, Yaprak E, Basar M, Guzel E, Arda O, Irez T, Norambuena P, Krenkova P, Tuettelmann F, Kliesch S, Paulasova P, Stambergova A, Macek M, Macek M, Rivera R, Garrido-Gomez T, Galletero S, Meseguer M, Dominguez F, Garrido N, Mallidis C, Sanchez V, Weigeng L, Redmann K, Wistuba J, Gross P, Wuebbelling F, Fallnich C, Burger M, Kliesch S, Schlatt S, San Celestino Carchenilla M, Pacheco Castro A, Simon Sanjurjo P, Molinero Ballesteros A, Rubio Garcia S, Garcia Velasco JA, Macanovic B, Otasevic V, Korac A, Vucetic M, Garalejic E, Ivanovic Burmazovic I, Filipovic MR, Buzadzic B, Stancic A, Jankovic A, Velickovic K, Golic I, Markelic M, Korac B, Gosalvez J, Ruiz-Jorro M, Garcia-Ochoa C, Sachez-Martin P, Martinez-Moya M, Caballero P, Hasegawa N, Fukunaga N, Nagai R, Kitasaka H, Yoshimura T, Tamura F, Kato M, Nakayama K, Oono H, Kojima E, Yasue K, Watanabe H, Asano E, Hashiba Y, Asada Y, Das M, Al-Hathal N, San-Gabriel M, Phillips S, Kadoch IJ, Bissonnette F, Holzer H, Zini A, Zebitay AG, Irez T, Ocal P, Sahmay S, Karahuseyinoglu S, Usta T, Repping S, Silber S, Van Wely M, Datta A, Nayini K, Eapen A, Barlow S, Lockwood G, Tavares R, Baptista M, Publicover SJ, Ramalho-Santos J, Vaamonde D, Rodriguez I, Diaz A, Darr C, Chow V, Ma S, Smith R, Jeria F, Rivera J, Gabler F, Nicolai H, Cunha M, Viana P, Goncalves A, Silva J, Oliveira C, Teixeira da Silva J, Ferraz L, Madureira C, Doria S, Sousa M, Barros A, Herrero MB, Delbes G, Troueng E, Holzer H, Chan PTK, Vingris L, Setti AS, Braga DPAF, Figueira RCS, Iaconelli A, Borges E, Sargin Oruc A, Gulerman C, Zeyrek T, Yilmaz N, Tuzcuoglu D, Cicek N, Scarselli F, Terribile M, Franco G, Zavaglia D, Dente D, Zazzaro V, Riccio T, Minasi MG, Greco E, Cejudo-Roman A, Ravina CG, Candenas L, Gallardo-Castro M, Martin-Lozano D, Fernandez-Sanchez M, Pinto FM, Balasuriya A, Serhal P, Doshi A, Harper J, Romany L, Garrido N, Fernandez JL, Pellicer A, Meseguer M, Ribas-Maynou J, Garcia-Peiro A, Fernandez-Encinas A, Prada E, Jorda I, Cortes P, Llagostera M, Navarro J, Benet J, Kesici H, Cayli S, Erdemir F, Karaca Z, Aslan H, Karaca Z, Cayli S, Ocakli S, Kesici H, Erdemir F, Aslan H, Tas U, Ozdemir AA, Aktas RG, Tok OE, Ocakli S, Cayli S, Karaca Z, Erdemir F, Aslan H, Li S, Lu C, Hwu Y, Lee RK, Landaburu I, Gonzalvo MC, Clavero A, Ramirez JP, Pedrinaci S, Serrano M, Montero L, Carrillo S, Weiss J, Ortiz AP, Castilla JA, Sahin O, Bakircioglu E, Serdarogullari M, Bayram A, Yayla S, Ulug U, Tosun SB, Bahceci M, Aktas RG, Ozdemir AA, Tok OE, Yoon SY, Shin DH, Shin TE, Park EA, Won HJ, Kim YS, Lee WS, Yoon TK, Lee DR, Hattori H, Nakajo Y, Kyoya T, Kuchiki M, Kanto S, Kyono K, Park M, Park MR, Lim EJ, Lee WS, Yoon TK, Lee DR, Choi Y, Mitra A, Bhattacharya J, Kundu A, Mukhopadhaya D, Pal M, Enciso M, Alfarawati S, Wells D, Fernandez-Encinas A, Garcia-Peiro A, Ribas-Maynou J, Abad C, Amengual MJ, Navarro J, Benet J, Esmaeili V, Safiri M, Shahverdi AH, Alizadeh AR, Ebrahimi B, Brucculeri AM, Ruvolo G, Giovannelli L, Schillaci R, Cittadini E, Scaravelli G, Perino A, Cortes Gallego S, Gabriel Segovia A, Nunez Calonge R, Guijarro Ponce A, Ortega Lopez L, Caballero Peregrin P, Heindryckx B, Kashir J, Jones C, Mounce G, Ramadan WM, Lemmon B, De Sutter P, Parrington J, Turner K, Child T, McVeigh E, Coward K, Bakircioglu E, Ulug U, Tosun S, Serdarogullari M, Bayram A, Ciray N, Bahceci M, Saeidi S, Shapouri F, Hoseinifar H, Sabbaghian M, Pacey A, Aflatoonian R, Bosco L, Ruvolo G, Carrillo L, Pane A, Manno M, Roccheri MC, Cittadini E, Selles E, Garcia-Herrero S, Martinez JA, Munoz M, Meseguer M, Garrido N, Durmaz A, Dikmen N, Gunduz C, Tavmergen Goker E, Tavmergen E, Gozuacik D, Vatansever HS, Kara B, Calimlioglu N, Yasar P, Tavmergen E, Tavmergen Goker E, Semerci B, Baka M, Ozbilgin K, Karabulut A, Tekin A, Sabah B, Cottin V, Kottelat D, Fellmann M, Halm S, Rosenthaler E, Kisida T, Kojima F, Sakamoto T, Makutina VA, Balezin SL, Rosly OF, Slishkina TV, Hatzi E, Lazaros L, Xita N, Makrydimas G, Sofikitis N, Kaponis A, Stefos T, Zikopoulos K, Georgiou I, Zikopoulos K, Lazaros L, Xita N, Makrydimas G, Sofikitis N, Kaponis A, Stefos T, Hatzi E, Georgiou I, Georgiou I, Lazaros L, Xita N, Makrydimas G, Sofikitis N, Kaponis A, Stefos T, Hatzi E, Zikopoulos K, Hibi H, Ohori T, Sumitomo M, Asada Y, Anarte C, Calvo I, Domingo A, Presilla N, Aleman M, Bou R, Guardiola F, Agirregoikoa JA, De Pablo JL, Barrenetxea G, Zhylkova I, Feskov O, Feskova I, Zozulina O, Somova O, Nabi A, Khalili MA, Roudbari F, Parmegiani L, Cognigni GE, Bernardi S, Taraborrelli S, Troilo E, Ciampaglia W, Pocognoli P, Infante FE, Tabarelli de fatis C, Arnone A, Maccarini AM, Filicori M, Silva L, Oliveira JBA, Petersen CG, Mauri AL, Massaro FC, Cavagna M, Baruffi RLR, Franco JG, Fujii Y, Endou Y, Mtoyama H, Shokri S, Aitken RJ. ANDROLOGY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.73] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zubero MB, Aurrekoetxea JJ, Ibarluzea JM, Rivera J, Parera J, Abad E, Rodríguez C, Sáenz JR. Evolution of PCDD/Fs and dioxin-like PCBs in the general adult population living close to a MSW incinerator. THE SCIENCE OF THE TOTAL ENVIRONMENT 2011; 410-411:241-247. [PMID: 22000289 DOI: 10.1016/j.scitotenv.2011.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Revised: 09/02/2011] [Accepted: 09/02/2011] [Indexed: 05/31/2023]
Abstract
It is well known that municipal solid waste incinerators (MSWI) produce dioxins and furans. The aim of this study was to assess the serum levels of compounds with dioxin-like activity such as polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and dioxin-like PCBs after the commissioning of a MSWI plant. In 2006 and 2008 serum samples were obtained from 322 and 326 volunteers, respectively, from the general population, some living in the vicinity of the plant and others, as a control group, living further away from the MSWI plant and out of the path of prevailing winds. Samples for sets of 20 individuals, grouped by age and sex, were pooled, obtaining 16 pooled samples per year. No significant differences were observed in PCDD/Fs as a function of area of residence or proximity to the plant over the time of the study, with levels of WHO-TEQ/g lipid nearby and far from the MSWI being 26.9 and 20.0pg, respectively, in 2006 and 20.8 and 26.4pg, respectively, in 2008. There was a significant decrease in the concentration of non-ortho PCBs in the nearby areas, whilst there was a significant increase in the concentration of mono-ortho PCBs, both in the nearby areas and in those further away from the MSWI. Age was significantly associated with PCDD/Fs and dioxin-like PCBs, but sex showed no significant association. Overall, this study found that there was no increase in the levels of compounds with dioxin-like activity in a population living close to an MSWI, in agreement with the literature reviewed, for plants of recent construction using state-of-the-art technology.
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Rivera J, Gee SK, Curtis M, Boehm-Davis DA, Jentsch F. The Visual Approach: Evaluating the Relative Impact of Perceptual and Conceptual Training. ACTA ACUST UNITED AC 2011. [DOI: 10.1177/1071181311551323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Spínola-Amilibia M, Rivera J, Ortiz-Lombardía M, Romero A, Neira JL, Bravo J. The structure of BRMS1 nuclear export signal reveals a hexamer of coiled coils. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311092269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Gallmeier E, Hermann PC, Mueller MT, Machado JG, Ziesch A, De Toni EN, Palagyi A, Eisen C, Ellwart JW, Rivera J, Rubio-Viqueira B, Hidalgo M, Bunz F, Göke B, Heeschen C. Inhibition of ataxia telangiectasia- and Rad3-related function abrogates the in vitro and in vivo tumorigenicity of human colon cancer cells through depletion of the CD133(+) tumor-initiating cell fraction. Stem Cells 2011; 29:418-29. [PMID: 21308861 DOI: 10.1002/stem.595] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The identification of novel approaches to specifically target the DNA-damage checkpoint response in chemotherapy-resistant cancer stem cells (CSC) of solid tumors has recently attracted great interest. We show here in colon cancer cell lines and primary colon cancer cells that inhibition of checkpoint-modulating phosphoinositide 3-kinase-related (PIK) kinases preferentially depletes the chemoresistant and exclusively tumorigenic CD133(+) cell fraction. We observed a time- and dose-dependent disproportionally pronounced loss of CD133(+) cells and the consecutive lack of in vitro and in vivo tumorigenicity of the remaining cells. Depletion of CD133(+) cells was initiated through apoptosis of cycling CD133(+) cells and further substantiated through subsequent recruitment of quiescent CD133(+) cells into the cell cycle followed by their elimination. Models using specific PIK kinase inhibitors, somatic cell gene targeting, and RNA interference demonstrated that the observed detrimental effects of caffeine on CSC were attributable specifically to the inhibition of the PIK kinase ataxia telangiectasia- and Rad3-related (ATR). Mechanistically, phosphorylation of CHK1 checkpoint homolog (S. pombe; CHK1) was significantly enhanced in CD133(+) as compared with CD133(-) cells on treatment with DNA interstrand-crosslinking (ICL) agents, indicating a preferential activation of the ATR/CHK1-dependent DNA-damage response in tumorigenic CD133(+) cells. Consistently, the chemoresistance of CD133(+) cells toward DNA ICL agents was overcome through inhibition of ATR/CHK1-signaling. In conclusion, our study illustrates a novel target to eliminate the tumorigenic CD133(+) cell population in colon cancer and provides another rationale for the development of specific ATR-inhibitors.
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Jalilian R, Rivera J, Askari D, Arva S, Rathfon JM, Cohn RW, Yazdanpanah MM. Toward wafer-scale patterning of freestanding intermetallic nanowires. NANOTECHNOLOGY 2011; 22:295601. [PMID: 21673382 DOI: 10.1088/0957-4484/22/29/295601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Individual metal alloy nanowires of constant diameter and high aspect ratio have previously been self-assembled at selected locations on atomic force microscope (AFM) probes by the method reported in Yazdanpanah et al (2005 J. Appl. Phys. 98 073510). This process relies on the room temperature crystallization of an ordered phase of silver-gallium. A parallel version of this method has been implemented in which a substrate, either an array of micromachined tips (similar to tips on AFM probes) or a lithographically patterned planar substrate, is brought into contact with a continuous, nearly planar film of melted gallium. In several runs, freestanding wires are fabricated with diameters of 40-400 nm, lengths of 4-80 µm, growth rates of 80-170 nm s( - 1) and, most significantly, with yields of up to 97% in an array of 422 growth sites. These results demonstrate the feasibility of developing a batch manufacturing process for the decoration of wafers of AFM tips and other structures with selectively patterned freestanding nanowires.
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Trigueros-Motos L, Gonzalez JM, Rivera J, Andres V. Hutchinson-Gilford progeria syndrome, cardiovascular disease and oxidative stress. Front Biosci (Schol Ed) 2011; 3:1285-97. [PMID: 21622271 DOI: 10.2741/226] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hutchinson-Gilford Progeria Syndrome (HGPS), a rare human disease characterized by premature aging, is mainly caused by the abnormal accumulation of progerin, a mutant form of the mammalian nuclear envelope component lamin A. HGPS patients exhibit vascular alterations and die at an average age of 13 years, predominantly from myocardial infarction or stroke. Animal models of HGPS have been a valuable tool in the study of the pathological processes implicated in the origin of this disease and its associated cardiovascular alterations. Some of the molecular mechanisms of HGPS might be relevant to the process of normal aging, since progerin is detected in cells from normal elderly humans. Conversely, processes linked to normal aging, such as the increase in oxidative stress, might be relevant to the pathogenic mechanisms of HGPS. In this review, we discuss recent advances in the understanding of the molecular mechanisms underlying the cardiovascular alterations associated with HGPS, the potential role of oxidative stress, and therapeutic approaches for the treatment of this devastating disease.
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Santos C, Ventura A, Gomes AM, Pereira S, Almeida C, Seabra J, Segelmark M, Mattsson L, Said S, Olde B, Solem K, Yu X, Zhang B, Sun B, Mao H, Xing C, Gruss E, Portoles J, Tato A, Lopez-Sanchez P, Jimenez P, de la Cruz R, Furaz K, Martinez S, Mas M, Andres MM, Corchete E, Kim YO, Kim HG, Kim BS, Song HC, Choi EJ, Ibeas J, Vallespin J, Fortuno JR, Rodriguez-Jornet A, Grau C, Merino J, Branera J, Perendreu J, Granados I, Mateos A, Jimeno V, Moya C, Ramirez J, Falco J, Gimenez A, Garcia M, Morgado E, Pinho A, Guedes A, Guerreiro R, Mendes P, Bexiga I, Silva A, Marques J, Neves P, Shibata K, Iwamoto T, Murakami T, Ono S, Kaneda T, Kuji T, Kawata S, Satta H, Tamura K, Toya Y, Yanagi M, Umemura S, Yasuda G, Yong OL, Lim WWL, Yong KM, Tay KH, Lim EK, Yang WS, Tan SG, Choong HL, Hill A, Blatter D, Kim YO, Kim HG, Song HC, Choi EJ, Kim SY, Min JK, Park WD, Kim HG, Kim YO, Kim BS, Kim SY, Min JK, Park WD, Ibeas J, Fortuno JR, Branera J, Rodriguez- Jornet A, Perendreu J, Marcet M, Vinuesa X, Mateo A, Jimeno V, Fernandez M, Moya C, Rivera J, Falco J, Garcia M, Shibahara H, Shibahara N, Takahashi S, Shibahara H, Shibahara N, Takahashi S, Kanaa M, Wright MJ, Sandoe JAT, Freudiger H, Dupret J, Jacquemoud MC, Rossi L, Kampouris C, Hatzimpaloglou A, Karamouzis M, Pliakos C, Malindretos P, Roudenko I, Grekas D, Costa AC, Santana A, Neves F, Costa AGD, Chaudhry M, Bhola C, Joarder M, Lok C, Coentrao L, Faria B, Frazao J, Pestana M, Sun XF, Yang Y, Wang J, Lin HL, Li JJ, Yao L, Zhao JY, Zhang ZM, Lun LD, Zhang JR, Zhang YM, Li MX, Jiang SM, Wang Y, Zhu HY, Chen XM, Caeiro F, Carvalho D, Cruz J, Ribeiro dos Santos J, Nolasco F, Bartlett R, Pandya B, Viana N, Machado S, Gil C, Lucas C, Mendes A, Barata J, Freitas L, Campos M, Rikker C, Juhasz E, Toth A, Vizi I, Tornoci L, Rosivall L, Tovarosi S, Cho S, Kim S, Lee YJ, Kanai H, Harada K, Nasu S, Shinozaki M, Shibahara N, Shibahara H, Takahashi S, Esenturk M, Zengin M, Ogun F, Akdemir A, Colak C, Pekince G, Gerasimovska V, Oncevski A, Gerasimovska-Kitanovska B, Sikole A, Kiselev N, Chernyshev S, Zlokazov V, Idov E, Bacallao Mendez R, Avila A, Salgado J, Llerena B, Badell A, Aties M, Severn A, Metcalfe W, Traynor J, Boyd J, Kerssens J, Henderson A, Simpson K, Roca-Tey R, Samon S, Ibrik O, Roda E, Gonzalez JC, Viladoms J, Malindretos P, Bamidis P, Liaskos C, Papagiannis A, Vrochides D, Frantzidis C, Sarafidis P, Lasaridis A, Chryssogonidis I, Nikolaidis P, Ibeas J, Vallespin J, Fortuno JR, Merino J, Rodriguez-Jornet A, Branera J, Grau C, Granados I, Mateos A, Jimeno V, Perndreu J, Moya C, Rivera J, Falco J, Gimenez A, Garcia M, Moyses Neto M, Ferreira V, Martinez R, Tercariol CAS, Lima DAFS, Figueiredo JFC, Costa JAC, Alayoud A, Hamzi A, Akhmouch I, Aatif T, Oualim Z, Jankovic A, Ilic M, Damjanovic T, Djuric Z, Popovic J, Adam J, Dimkovic N. Vascular access. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Rivera-Austrui J, Borrajo MA, Martinez K, Adrados MA, Abalos M, Van Bavel B, Rivera J, Abad E. Assessment of polychlorinated dibenzo-p-dioxin and dibenzofuran emissions from a hazardous waste incineration plant using long-term sampling equipment. CHEMOSPHERE 2011; 82:1343-1349. [PMID: 21193220 DOI: 10.1016/j.chemosphere.2010.11.054] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Revised: 11/08/2010] [Accepted: 11/10/2010] [Indexed: 05/30/2023]
Abstract
The aim of this work is to evaluate the performance of a continuous monitoring system for the analysis of the mass concentration of PCDD/Fs from stationary sources. Data was acquired from a modern, state of the art, hazardous waste thermal treatment plant for a period of more than 2 years using a commercial available continuous monitoring system. The study consisted of a total of 16 samples, collected in periods from 1 week to 2 months resulting in an average of 360 m³ sampled flue gas per sample. The study showed the system was able to confirm that for a period of more than 2 years the plant was complying with the limit of 0.1 ng I-TEQ/Nm(3). In addition, the data showed the typical fingerprint of such installations which is useful for example in impact studies. Long-term samples were compared to five short-term samples (6 h) collected every 6 months during the study period. Principal component analysis was applied to PCDD/Fs obtained data as useful statistical tool to find out trends and similarities between different samples. Improvement in terms of representativeness of data was achieved through continuous assessment since the starts of the project. The obtained data was further used to determine the emission factor for this activity and the total annual PCDD/Fs release to the atmosphere.
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Xue Q, Gu C, Rivera J, Höök M, Chen X, Pozzi A, Xu Y. Entry of Bacillus anthracis spores into epithelial cells is mediated by the spore surface protein BclA, integrin α2β1 and complement component C1q. Cell Microbiol 2010; 13:620-34. [PMID: 21134100 DOI: 10.1111/j.1462-5822.2010.01558.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Inhalational anthrax is initiated by pulmonary exposure to Bacillus anthracis spores. Spore entry into lung epithelial cells is observed both in vitro and in vivo and evidence suggests it is important for bacterial dissemination and virulence. However the specific host receptor and spore factor that mediate the entry process were unknown. Here, we report that integrin α2β1 is a major receptor for spore entry. This is supported by results from blocking antibodies, siRNA knock-down, colocalization, and comparison of spore entry into cells that do or do not express α2. BclA, a major spore surface protein, is found to be essential for entry and α2β1-mediated entry is dependent on BclA. However, BclA does not appear to bind directly to α2. Furthermore, spore entry into α2-expressing cells is dramatically reduced in the absence of serum, suggesting that additional factors are involved. Finally, complement component C1q, also an α2β1 ligand, appears to act as a bridging molecule or a cofactor for BclA/α2β1-mediated spore entry and BclA binds to C1q in a dose-dependent and saturable manner. These findings suggest a novel mechanism for pathogen entry into host cells as well as a new function for C1q-integrin interactions. The implications of these findings are discussed.
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Martinez A, Fàbrega J, Delgado L, Diaz A, Mayol L, Rivera J, Dominguez-Sampedro P. Paediatric intermediate life support course (PILS). Our experience with a new course in Catalonia (Spain). Resuscitation 2010. [DOI: 10.1016/j.resuscitation.2010.09.434] [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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Al Wohoush I, Rivera J, Cairo J, Hachem R, Raad I. Comparing clinical and microbiological methods for the diagnosis of true bacteraemia among patients with multiple blood cultures positive for coagulase-negative staphylococci. Clin Microbiol Infect 2010; 17:569-71. [PMID: 20854425 DOI: 10.1111/j.1469-0691.2010.03372.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We assessed the accuracy of the Centers for Disease Control and Prevention (CDC) clinical criteria as well as other microbiological methods for the diagnosis of coagulase-negative staphylococci bacteraemia. The CDC clinical criteria had low accuracy, which can be improved by speciation, particularly if the patient had more than two positive blood cultures.
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Cosgriff-Hernandez E, Hahn MS, Russell B, Wilems T, Munoz-Pinto D, Browning MB, Rivera J, Höök M. Bioactive hydrogels based on Designer Collagens. Acta Biomater 2010; 6:3969-77. [PMID: 20466083 DOI: 10.1016/j.actbio.2010.05.002] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2009] [Revised: 05/03/2010] [Accepted: 05/06/2010] [Indexed: 01/01/2023]
Abstract
Designer Collagens are based on streptococcal collagen-like (Scl) proteins that form a triple helix similar to mammalian collagens but that are non-platelet aggregating. In contrast to the numerous cell-binding sites on collagen, Scl2 from Streptococcus pyogenes serotype M28 does not contain any known cell-binding sites and thus provides a blank slate in terms of cellular interactions. In the current study, Scl2 protein was modified to include receptor binding motifs that interact with alpha1 and/or alpha2 integrin subunits. The modfied Scl2 proteins have been demonstrated to mediate differential endothelial cell (EC) and smooth muscle cell (SMC) adhesion via these integrins and to retain the non-platelet aggregating properties of the "parent" Scl2. Thromboresistant scaffolds which selectively bind ECs vs. SMCs would be desirable for vascular repair or replacement. Despite the potential of these Scl proteins in vascular applications, the utility of this recombinant protein family is currently limited to coatings due to the inability of Scl proteins to assemble into stable three-dimensional networks. To address this limitation, the Scl2 proteins were functionalized with photocrosslinking sites to enable incorporation into a hydrogel matrix. Characterization studies confirmed that the functionalization of the Scl2 proteins did not disrupt triple helix conformation, integrin binding or cell adhesion. Bioactive hydrogels were fabricated by combining the functionalized Scl2 proteins with poly(ethylene glycol) diacrylate (PEGDA) and photocrosslinking. EC and SMC adhesion studies confirmed cell-specific adhesion due to selective integrin binding to the two receptor binding motifs investigated. These results serve to highlight the potential of this novel biomaterial platform in the development of improved tissue engineered vascular grafts.
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Smith R, Rivera J, Jeria F, Baeza K, Gabler F, Nicolai H. Effect of age on apoptosis-related proteins in germ cells of human testes. Fertil Steril 2010. [DOI: 10.1016/j.fertnstert.2010.07.904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Atlas H, Safa N, Denis R, Garneau P, Moustarah F, Marceau S, Lebel S, Biertho L, Hould F, Marceau P, Biron S, Anvari M, Sharma A, Goldsmith CH, Lacobellis G, Cadeddu M, Misra M, Taylor V, Tarride J, Hubert E, Tiboni M, Hong D, Wiebe S, Klassen D, Bonjer J, Lawlor D, Plowman J, Ransom T, Vallis M, Ellsmere J, Graham PJ, Kaban GK, Vizhul A, Birch DW, Menezes AC, Shi X, Karmali S, Seth R, MacKenzie L, Kus A, Bell J, Carrier M, Atkins H, Boushey R, Auer R, Croome KP, Yamashita M, Aarts MA, Okrainec A, Glicksman A, Pearsall E, Pitzul K, Huang H, McLeod RS, Sarkhosh K, Robertson M, Boctor D, Lam V, Sigalet D, Johner A, Faulds J, Wiseman SM, Pemberton J, Gordon ML, Prashad C, Rambaran M, Cameron B, Neville A, Sarosi GA, Wei Y, Gibbs JO, Reda DJ, McCarthy M, Fitzgibbons RJ, Barkun JST, Fenech DS, Forbes S, Pearsall E, Chung J, Glickman A, Victor JC, Nathens A, McLeod RS, Fitzmaurice GJ, Mone F, Brown R, Cranley B, Conlon EF, Todd RAJ, O'Donnell ME, Tran TT, Kaneva PA, Finch LE, Fried GM, Mayo NE, Feldman LS, VanHouwellingen L, Vogt KN, Stewart TC, Williamson J, Parry N, DeRose G, Gray D, Harriman S, Rodych N, Hayes P, Moser M, Jamal MH, Doi S, Rousseau M, Snell L, Meterissian S, Zolfaghari S, Friedlich MS, Kurashima Y, Al-Sabah S, Kaneva PA, Feldman LS, Fried GM, Vassiliou MC, Tran TT, Kaneva PA, Mayo NE, Fried GM, Feldman LS, Pearsall E, Sheth U, Fenech D, McKenzie M, Victor JC, McLeod RS, Ghaderi I, Vaillancourt M, Sroka G, Kaneva PA, Vassiliou MC, Seagull FJ, Sutton E, Godinez C, George I, Park A, Choy I, Okrainec A, Brintzenhoff R, Prabhu A, Heniford BT, Stefanidis D, Fried GM, Feldman LS, Igric A, Vogt KN, Girotti M, Parry NG, Vinden C, Kim SHH, Zhang NN, Russo JJ, El-Salfiti IK, Kowalczuk M, Rajaee AN, Bal M, Gill MS, Lysecki PJ, Hoogenes J, Dath D, Nassar AK, Reid S, Mohaisen KN, Winch J, Omar D, Hanna WC, Mulder DS, El-Hilali MM, Khwaja KA, Jamal MH, Rayment J, Doi SA, Megueditchian A, Meterissian S, Tso D, Langer M, Blair G, Butterworth S, Vaillancourt M, Vassiliou MC, Bergman S, Fried GM, Kaneva PA, Feldman LS, Davenport E, Haggar F, Trottier D, Huynh H, Soto C, Shamji FM, Seely A, Sundaresan S, Pagliarello G, Tadros S, Yelle JD, Maziak D, Moloo H, Poulin EC, Mamazza J, Knowlton LM, Chackungal S, MacQueen KA, Anvari M, Allen C, Goldsmith C, Ghaderi I, Madani A, de Gara C, Schlachta CM, Zakrison TL, Tee MC, Chan S, Nguyen V, Yang J, Holmes D, Levine D, Bugis S, Wiseman SM, Sandhu L, Zhai J, Kennedy ED, Baxter NN, Gagliardi AR, Urbach DR, Wei AC, Sabalbal M, McAlister VC, Balayla J, Bergman S, Feldman LS, Ghitulescu G, Fraser SA, Daigle R, Urquart R, Cox M, Grunfeld E, Porter G, Hallet J, Labidi S, Clairoux A, Gagné JP, Gill RS, Manouchehri N, Liu JQ, Lee TF, Bigam DL, Cheung PY, Van Koughnett JA, Colquhoun PH, Gordon ML, Cornacchi S, Farrokhyar F, Hodgson N, Porter G, Quan ML, Wright F, Lovrics P, Datta I, Brar SS, Ball CG, Heine JA, Rothwell B, Crozier M, Ting H, Boone D, O'Regan N, Brown C, Bandrauk N, Hapgood J, Hogan M, McDonald LA, Da'as S, Sorensen PHB, Berman JN, Ameer A, Jamal M, Aljiffry M, Doi S, Hasanain M, Chaudhury P, Metrakos P, Tchervenkov J, Lapierre S, Mohammad W, Balaa N, Akil M, Mimeault R, Fairfull-Smith R, Teague BD, Butler MS, Garneau PY, Sample CB, Kapoor A, Cadeddu MO, Anvari M, Hanna WC, Jamal MH, Nguyen L, Fraser SA, Kwan K, Wallis CJD, Jones S, Fraser T, Masterso J, Blair G, Duffy D, Roberts DJ, Kirkpatrick AW, Datta I, Feliciano DV, Kortbeek JB, Laupland KB, Ball CG, Haggar F, Davenport E, Moloo H, Mamazza J, Manouchehri N, Bigam D, Churchill T, Joynt C, Cheung PY, Al-Sairafi R, Sample CB, Paquette F, Fraser SA, Feldman LS, Fried GM, Weissglas I, Ghitulescu G, Meterissian S, Bergman S, Al-Dohayan A, Al-Naami M, Bamehriz F, Madkhali A, Hallet J, LeBlanc M, Gilbert A, Daigle C, Tien G, Atkins MS, Zheng B, Tanin H, Swindells C, Meneghetti A, Panton ONM, Qayumi AK, Chhiv M, Drolet S, Sirois-Giguère É, Gilbert A, Doyle JD, Sheth U, Huang H, Pearsall E, McLeod RS, Nathens AB, Suri RR, Vora P, Kirby JM, Chan K, Smith S, Ruo L, Faryniuk A, Hochman D, Ball CG, Kirkpatrick AW, Broderick TJ, Williams DR, Kholdebarin R, Helewa R, Bracken J, Zabolotny B, Hochman D, Merchant S, Hameed M, Melck A, McGuire AL, Wilson C, Mercer D, Sharma B, Orzech N, Grantcharov T, Johner A, Taylor DC, Buczkowski AK, Chung SW, Lumb KJ, Trejos AL, Ward CDW, Naish MD, Patel RV, Schlachta CM, Davenport E, Haggar F, Moloo H, Boushey RP, Poulin EC, Mamazza J, Graybiel KM, Fernandes VT, Hoogenes J, Dath D, Mohammad W, Trottier D, Nadolny K, Poulin EC, Mamazza J, Balaa F, Diederichs B, Turner S, de Gara C, Ghitulescu GA, Filip I, Bergman S, Fraser S, Finley RJ, Mayo J, Clifton J, Yee J, Evans K, MacWilliams A, Lam S, English J, Finley C, Jacks L, Darling G, Hanna WC, Sudarshan M, Roberge D, David M, Waschke KA, Mayrand S, Ferri LE, Coughlin S, Emmerton-Coughlin H, Malthaner R, Grover HS, Basi S, Chiasson P, Basi S, Irshad K, Emmerton-Coughlin HMA, Vogt KN, Malthaner RA, Spicer JD, McDonald B, Perera R, Rousseau MC, Chan CHF, Hsu RYC, Giannias B, Ferri LE, Ahmed S, Birnbaum AE, Berz D, Fontaine JP, Dipetrillo TA, Ready NE, Ng T, Alhussaini A, Oberoi M, Threader J, Villeneuve J, Gilbert S, Shamji FM, Sundaresan S, Maziak D, Seely A, Rammohan KS, Hunt I, Chuck A, Gazala S, Valji A, Stewart K, Bedard ELR, Plourde M, Fortin D, Arab A, Inculet RI, Malthaner RA, Bharadwaj SC, Hamin T, Tan LA, Unruh HW, Srinathan SK, McGuire AL, Petsikas D, Reid K, Hopman W, Levine P, Rousseau M, Spicer J, Ferri LE, Ashrafi AS, Bond RJ, Ong SR, Ahmadi SY, Partington SL, Graham AJ, Owen S, Kelly EJ, Gelfand G, Grondin SC, McFadden SD, Paolucci EO, Weeks SG, Davis PJ, Molinari M, Topp T, Walsh MJ, Simoneau E, Hassanain M, Cabrera T, Chaudhury P, Dumitra S, Aljiffry M, Feteih I, Leduc S, Rivera J, Jamal M, Valenti D, Metrakos P, Elgadi K, Cherniak W, Chan D, Wei AC, Gallinger S, Mohammad W, Mimeault R, Fairfull-Smith R, Auer R, Balaa F, Kwan J, Hassanain M, Chaudhury P, Dey C, Gadahadh R, Salman A, Simoneau E, Meti N, Aljiffry M, Jamal M, Cabrera T, Bouganim N, Kavan P, Alcindor T, Valenti D, Metrakos P, Brar B, Sutherland F, Bégin A, Bourdonnais D, Lapointe R, Plasse M, Létourneau R, Roy A, Dagenais M, Vandenbroucke-Menu F, Bégin A, Bourdonnais D, Lapointe R, Plasse M, Létourneau R, Dagenais M, Roy A, Vandenbroucke-Menu F, Bégin A, Ismail S, Vandenbroucke-Menu F, Létourneau R, Plasse M, Roy A, Dagenais M, Lapointe R, Greco EF, Nanji S, Shah SA, Wei AC, Greig PD, Gallinger S, Cleary SP, Al-Adra DP, Anderson C, Nanji S, Ryan P, Guindi M, Selvarajah S, Greig P, McGilvray I, Taylor B, Wei A, Moulton C, Cleary SP, Gallinger S, Sandroussi C, Brace C, Kennedy E, Baxter N, Gallinger S, Wei AC, Yamashita T, Leslie K, McLean SR, Karsanji D, Dixon E, Sutherland FR, Bathe OF, Suri RR, Marcaccio MJ, Ruo L, Jamal MH, Simoneau E, Khalil JA, Hassanain M, Chaudhury P, Tchervenkov J, Metrakos P, Doi SA, Barkun JS, Barnett C, Marcaccio MJ, Hankinson JJ, Ruo L, Alawashez A, Ellsmere J, Neville A, Boutros M, Barkun J, Wiebe ME, Sandhu L, Takata JL, Kennedy ED, Baxter NN, Gagliardi AR, Urbach DR, Wei AC, Chan G, Kocha W, Reid R, Wall W, Quan D, Lovrics P, Hodgson N, Ghola G, Franic S, Goldsmith C, McCready D, Cornacchi S, Garnett A, Reedijk M, Scheer AS, McSparron JI, Schulman AR, Tuorto S, Gonen M, Gonsalves J, Fong Y, Auer RAC, Francescutti V, Coates A, Thabane L, Goldsmith CH, Levine M, Simunovic M, Richardson DP, Porter G, Johnson PM, Leon-Carlyle M, Schmocker S, O'Connor BI, Victor JC, Baxter NN, Smith AJ, McLeod RS, Kennedy ED, Chan CHF, Arabzadeh A, DeMarte L, Spicer JD, Turbide C, Brodt P, Beauchemin N, Ferri LE, Zih F, Panzarella T, Hummel C, Petronis J, McCart A, Swallow C, Mathieson A, Ridgway PF, Ko YJ, Smith AJ, Gieni M, Dickson L, Sne N, Avram R, Farrokhyar F, Smith M, Giacomantonio C, Hoskin D, Doyon C, Martin G, Patocskai E, Brar SS, Wright F, Okrainec A, Smith AJ, Bischof DA, Maier B, Fitch M, Wright FC, Baliski CR, Kluftinger A, MacLeod M, Kwong S, Racz JM, Fortin A, Latosinsky S, Messenger DE, Kirsch R, McLeod RS, Aslani N, Heidary B, Prabhu KL, Raval M, Phang PT, Brow C, Richardson DP, Porter G, Johnson PM, Moloo H, Haggar F, Duhaime S, Hutton B, Grimshaw J, Coyle D, Poulin EC, Mamazza J, Boushey RP, Paun BC, Shaheen AAM, Dixon E, Maclean AR, Buie WD, Moustarah F, Talarico J, Zink J, Gatmaitan P, Schauer P, Chand B, Brethauer S, Martel G, Duhaime S, Ramsay CR, Barkun JS, Ferguson DA, Boushey RP, Palter VN, MacRae HM, Grantcharov TP, Messenger DE, Victor JC, O'Connor BI, MacRae HM, McLeod RS, Al-Sabah S, Feldman LS, Charlebois P, Stein B, Kaneva PA, Fried GM, Liberman AS, Borowiec AM, Karmal S, Apriasz I, Mysliwiec B, Hussain N, Ott M, Reynolds R, Lum A, Williams LJ, Morash R, Shin S, Smylie J, Moloo H, Auer R, Poulin EC, Mamazza J, Watters J, Fung-Kee-Fung M, Boushey RP, Pelletier JS, de Gara CJ, White J, Ghosh S, Schiller D, Drolet S, Paolucci EO, Heine J, Buie WD, Maclean AR, Barnes A, Liang S, Auer R, Moloo H, Mamazza J, Poulin EC, Boushey RP, Klevan AE, Dalvi AA, Ramsay JA, Stephen WJ, Nhan C, Driman DK, Raby M, Smith AJ, Hunter A, Srigley J, McLeod RS, Zolfaghari S, Auer R, Moloo H, Mamazza J, Friedlich M, Poulin EC, Stern HS, Boushey RP, Scheer AS, Boushey RP, Liang S, Doucette S, O'Connor AM, Moher D. Canadian Surgery Forum. Can J Surg 2010; 53:S51-S104. [PMID: 35488396 PMCID: PMC2912011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023] Open
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Navarro-Núñez L, Rivera J, Guerrero JA, Martínez C, Vicente V, Lozano ML. Differential effects of quercetin, apigenin and genistein on signalling pathways of protease-activated receptors PAR(1) and PAR(4) in platelets. Br J Pharmacol 2009; 158:1548-56. [PMID: 19814731 DOI: 10.1111/j.1476-5381.2009.00440.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND AND PURPOSE The modulation by flavonoids of platelet responses induced by thrombin has been little investigated, and the antiplatelet activity, as well as possible inhibitory mechanisms of these compounds on thrombin signalling, has not yet been elucidated. We explored whether flavonoids affect platelet signalling pathways triggered by thrombin and by the selective activation of its protease-activated receptors (PARs) 1 and 4, and analysed the antagonism of these polyphenols at thrombin receptors. EXPERIMENTAL APPROACH We investigated the effect of a range of polyphenolic compounds on platelet aggregation, 5-HT secretion, intracellular calcium mobilization, protein kinase activity and tyrosine phosphorylation, triggered by thrombin and PAR agonist peptides (PAR-APs). The ability of these flavonoids to bind to thrombin receptors was investigated by competitive radioligand binding assays using (125)I-thrombin. KEY RESULTS Quercetin, apigenin and genistein impaired platelet aggregation, as well as 5-HT release and calcium mobilization, induced by thrombin and PAR-APs. Quercetin and apigenin were inhibitors of protein kinases, but genistein exhibited a minimal ability to suppress platelet phosphorylation. Binding assays did not establish any kind of interaction between thrombin receptors and any of the flavonoids tested. CONCLUSIONS AND IMPLICATIONS Quercetin, apigenin and genistein did not inhibit thrombin responses by interacting with thrombin receptors, but by interfering with intracellular signalling. While inhibition by genistein may be a consequence of affecting calcium mobilization, subsequent platelet secretion and aggregation, for quercetin and apigenin, inhibition of kinase activation may also be involved in the impairment of platelet responses.
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Rivera J, Rejas J, Esteve-Vives J, Vallejo MA. Resource utilisation and health care costs in patients diagnosed with fibromyalgia in Spain. Clin Exp Rheumatol 2009; 27:S39-S45. [PMID: 20074438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE Fibromyalgia (FM) patients have been regarded as great utilizers of health resources, with important related costs. The aim of this study is to describe health care resource utilisation and related costs of FM from the perspective of the National Health System in Spain. PATIENTS AND METHODS A cross-sectional multicenter study was conducted on FM patients based on a patient interview. Data about demographic and clinical variables, physical examination, self-perceived health, psychosocial variables and health resource utilisation, were collected. Direct and indirect costs were calculated, and a correlational study between costs and clinical variables was performed. RESULTS Three-hundred and one patients were studied. During the year 2006 the mean total cost per patient per year was 9,982 Euros, of which 3,245.8 (32.5%) corresponded to health care costs and 6,736.2 (67.5%) to indirect costs attributable to productivity losses. Non-drug therapies accounted for the largest proportion of the health care costs, three times greater than the drug treatment. Patients with higher total costs showed the greatest disease involvement. The variables associated to the total health care costs were functional capacity, depression, comorbidities and age. Patients with permanent working disability were the greatest resource utilizers. CONCLUSIONS FM patients with higher costs show the greatest disease involvement. Direct and indirect costs are well correlated to disease severity. The indirect costs account for most of the economic burden of FM and approximately double the health care costs. Patients with permanent working disability present more severe disease and generate greater health care costs.
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Metzger H, Blank U, Kinet JP, Kochan J, Ra C, Rivera J, White K. Emerging Picture of the Receptor with High Affinity for IgE. Int Arch Allergy Immunol 2009. [DOI: 10.1159/000234740] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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