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De Veer D, Baeza-Álvarez J, Bolaños S, Cavour Araya S, Darquea JJ, Díaz Poblete MA, Domínguez G, Holtmann-Ahumada G, Honorato-Zimmer D, Gaibor N, Gallardo MDLÁ, Guevara Torrejón V, León Chumpitaz A, Marcús Zamora L, Mora V, Muñoz Araya JM, Pernía B, Purca S, Rivadeneira MM, Sánchez OA, Sepúlveda JM, Urbina M, Vásquez N, Vélez Tacuri J, Villalobos V, Villanueva Brücher B, Thiel M. Citizen scientists study beach litter along 12,000 km of the East Pacific coast: A baseline for the International Plastic Treaty. Mar Pollut Bull 2023; 196:115481. [PMID: 37857060 DOI: 10.1016/j.marpolbul.2023.115481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 08/26/2023] [Accepted: 08/30/2023] [Indexed: 10/21/2023]
Abstract
Anthropogenic Marine Litter (AML) accumulating on beaches causes damage to coastal ecosystems and high costs to local communities. Volunteers sampled AML on 130 beaches along the central and southern East Pacific coasts, with AML densities ranging from 0.46 to 2.26 items m-2 in the different countries. AML composition was dominated by plastics and cigarette butts, the latter especially in Mexico and Chile. The accumulation of AML in the upper zones of the beaches and substantial proportions of cigarette butts, glass and metal pointed mainly to local sources. Statistical modelling of litter sources on continental beaches revealed that tourism, access and related infrastructure (e.g. parking lots) best explained AML densities, while plastic densities were also influenced by the distance from river mouths and national Gross Domestic Product. Large-scale monitoring can be a useful tool to evaluate the effectiveness of public policies that should primarily focus on land sources.
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Affiliation(s)
- Diamela De Veer
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile
| | - Jostein Baeza-Álvarez
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile
| | - Solange Bolaños
- Reserva Marina El Pelado, Ministerio del Ambiente Agua y Transición Ecológica de Ecuador, Km 21,5 Ruta de la Spondylus, Valdivia 240110, Ecuador
| | - Sebastián Cavour Araya
- Laboratorio de Estudios Algales (ALGALAB), Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile; Fundación Valve, Concepción, Chile
| | - Jodie J Darquea
- Facultad de Ciencias del Mar, Universidad Estatal Península de Santa Elena, Avda. Principal La Libertad, Santa Elena, 240204 La Libertad, Ecuador
| | - Manuel A Díaz Poblete
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile
| | - Gustavo Domínguez
- Facultad de Ciencias de la Vida, ESPOL Polytechnic University, Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador
| | | | | | - Nikita Gaibor
- Instituto Publico de Investigación de Acuicultura y Pesca, Guayaquil, Ecuador; Universidad del Pacífico, Vía a la Costa, Av. José Rodríguez Bonín, Guayaquil 090904, Ecuador
| | - María de Los Ángeles Gallardo
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile; Center of Ecology and Sustainable Management of Oceanic Islands (ESMOI), Coquimbo, Chile
| | | | - Alejandra León Chumpitaz
- Fundación Valve, Concepción, Chile; Facultad de Ciencias Veterinarias y Biológicas, Universidad Científica del Sur, Lima, Peru
| | - Lara Marcús Zamora
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Lago Panguipulli 1390, 5501842 Puerto Montt, Chile
| | - Valentina Mora
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile
| | - Juan Manuel Muñoz Araya
- Programa Parque Marino del Pacífico, Escuela de Ciencias Biológicas, Universidad Nacional (UNA), Heredia 40101, Costa Rica; Parque Marino del Pacífico, Paseo de los Turistas, Puntarenas 60101, Costa Rica
| | - Beatriz Pernía
- Facultad Ciencias Naturales, Universidad de Guayaquil, Av. Raúl Gómez Lince s/n y Av. Juan Tanca Marengo, Guayaquil 090150, Ecuador
| | - Sara Purca
- Área Funcional de Investigaciones Marino Costeras (AFIMC), Dirección General de Investigaciones en Acuicultura (DGIA), Instituto del Mar del Perú (IMARPE), Esquina Gamarra y Gral. Valle S/N, Chucuito-Callao, Peru
| | - Marcelo M Rivadeneira
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile; Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile
| | - Osmel Alberto Sánchez
- Universidad Gerardo Barrios, Campus San Miguel Calle Las Flores y Avenida Las Magnolias Colonia Escolán, San Miguel, El Salvador
| | - José Miguel Sepúlveda
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile; Colegio Eusebio Lillo, Coquimbo, Chile
| | - Mauricio Urbina
- Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, Concepción, Chile; Instituto Milenio de Oceanografía (IMO), Universidad de Concepción, PO Pox 1313, Concepción, Chile
| | - Nelson Vásquez
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile
| | - José Vélez Tacuri
- Fundación Red de Agentes por la Conservación y Sostenibilidad de los Ecosistemas (RACSE), Villas del Seguro Av. Florencia y Calle Oliva Miranda 130204, Manta, Manabí, Ecuador
| | - Vieia Villalobos
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile
| | | | - Martin Thiel
- Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile; Center of Ecology and Sustainable Management of Oceanic Islands (ESMOI), Coquimbo, Chile; Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile.
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Bloomquist R, Villalobos V, Patel C, Olson J, Rueggeberg F. Effect of RMGI Roughness and Dentin Bonding Primer on Shear Bond Strength of Sandwich-type Restorations. Oper Dent 2023; 48:546-551. [PMID: 37415337 DOI: 10.2341/22-130-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2023] [Indexed: 07/08/2023]
Abstract
BACKGROUND The open sandwich technique is a reliable alternative to amalgam placement in deep proximal box preparations, where proper isolation and enamel bonding may not be possible. It is often difficult to prepare the box for composite placement without affecting the resin-modified glass ionomer (RMGI) that has been placed in the gingival portion. We hypothesized that RMGI surfaces that are roughened or those that use all steps in the manufacturing bonding protocol, including the priming solution, applied before placing a bonded composite increment, would have greater composite/RMGI shear bond strength. DESIGN AND METHODS Shear bond strengths (SBS) of RMGI tested in the presence and absence of SiC roughening and primer-coating were tested using a fourth-generation dentin bonding agent to composite after thermocycling. Twenty specimens for four test conditions were fabricated and investigated. Data were subjected to a two-way ANOVA and the Holm-Sidak post-hoc test. RESULTS Placing dentin primer on unabraded RMGI provided a statistically significant improvement in SBS, but only modestly. Furthermore, because bond failure consistently occurred within the RMGI itself, none of the surface modifications have a clinically relevant impact on SBS at the RMGI to the composite interface. CONCLUSIONS Clinicians should be aware that they need not avoid RMGI abrasion and do not need to incorporate all components of a fourth-generation bonding system when covering an RMGI sandwich layer with composite.
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Affiliation(s)
- R Bloomquist
- *Ryan Bloomquist, DMD, PhD, MBA, Department of Restorative Sciences, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - V Villalobos
- Vanessa Villalobos, DMD, Department of Restorative Sciences, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - C Patel
- Charmi Patel, DMD, Department of Restorative Sciences, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - J Olson
- Jenni Olson, DMD, Department of Restorative Sciences, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - F Rueggeberg
- Frederick Rueggeberg, DDS, MS, Department of Restorative Sciences, Dental College of Georgia, Augusta University, Augusta, GA, USA
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Villalobos V, Betancor D, Pastor-Vargas C, Martin L, Cuesta J, Rodríguez Del Río P, Escudero C. Pistachio Allergens: The Long Journey Between Mother and Daughter. J Investig Allergol Clin Immunol 2023; 33:64-65. [PMID: 35332872 DOI: 10.18176/jiaci.0806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- V Villalobos
- Allergy Department, Niño Jesús University Children´s Hospital, Madrid, Spain.,Allergy Department, Fundación Jiménez Díaz, Madrid, Spain
| | - D Betancor
- Allergy Department, Niño Jesús University Children´s Hospital, Madrid, Spain.,Allergy Department, Fundación Jiménez Díaz, Madrid, Spain
| | - C Pastor-Vargas
- Biochemistry and Molecular Biology Department, Universidad Complutense de Madrid, Madrid, Spain.,RETIC ARADyAL, Instituto de Salud Carlos III, Madrid, Spain
| | - L Martin
- Foundation for Biomedical Research and Innovation, Hospital Universitario Infanta Leonor, Madrid, Spain
| | - J Cuesta
- Allergy Department, Fundación Jiménez Díaz, Madrid, Spain.,IIS-Fundación Jiménez Díaz, Madrid, Spain
| | - P Rodríguez Del Río
- Allergy Department, Niño Jesús University Children´s Hospital, Madrid, Spain.,FIB Niño Jesús, Madrid, Spain.,IIS La Princesa, Madrid, Spain
| | - C Escudero
- Allergy Department, Niño Jesús University Children´s Hospital, Madrid, Spain.,FIB Niño Jesús, Madrid, Spain.,IIS La Princesa, Madrid, Spain
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Véliz K, Toledo P, Araya M, Fernanda Gómez M, Villalobos V, Tala F. Chemical composition and heavy metal content of Chilean seaweeds: potential applications of seaweed meal as food and feed ingredients. Food Chem 2022; 398:133866. [DOI: 10.1016/j.foodchem.2022.133866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 11/30/2022]
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Morschhauser F, McKay P, Salles G, Stacchiotti S, Schwartz G, Tilly H, Zauderer M, Fennell D, Jones R, Schöffski P, Phillips T, Chaidos A, Villalobos V, Demetri G, Cote G, Sierra L, Yang J, Slatcher P, Agarwal S, Gounder M. 1639P Integrated safety analysis of tazemetostat (TAZ) 800 mg BID in adult patients (pts) with hematologic and solid tumors. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Gutow L, Poore AGB, Díaz Poblete MA, Villalobos V, Thiel M. Small burrowing amphipods cause major damage in a large kelp. Proc Biol Sci 2020; 287:20200330. [PMID: 32345163 PMCID: PMC7282921 DOI: 10.1098/rspb.2020.0330] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/03/2020] [Indexed: 11/12/2022] Open
Abstract
Large herbivores such as sea urchins and fish consume a high proportion of benthic primary production and frequently control the biomass of marine macrophytes. By contrast, small mesograzers, including gastropods and peracarid crustaceans, are abundant on seaweeds but have low per capita feeding rates and their impacts on marine macrophytes are difficult to predict. To quantify how mesograzers can affect macrophytes, we examined feeding damage by the herbivorous amphipods Sunamphitoe lessoniophila and Bircenna sp., which construct burrows in the stipes of subtidal individuals of the kelp Lessonia berteroana in northern-central Chile, southeast Pacific. Infested stipes showed a characteristic sequence of progressive tissue degeneration. The composition of the amphipod assemblages inside the burrows varied between the different stages of infestation of the burrows. Aggregations of grazers within burrows and microhabitat preference of the amphipods result in localized feeding, leading to stipe breakage and loss of substantial algal biomass. The estimated loss of biomass of single stipes varied between 1 and 77%. For the local kelp population, the amphipods caused an estimated loss of biomass of 24-44%. Consequently, small herbivores can cause considerable damage to large kelp species if their feeding activity is concentrated on structurally valuable algal tissue.
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Affiliation(s)
- Lars Gutow
- Department of Functional Ecology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, 27570 Bremerhaven, Germany
| | - Alistair G. B. Poore
- Evolution & Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | | | - Vieia Villalobos
- Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile
| | - Martin Thiel
- Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile
- Millennium Nucleus of Ecology and Sustainable Management of Oceanic Islands (ESMOI), Coquimbo, Chile
- Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile
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Trigo Perez J, Subbiah V, Besse B, Moreno V, López R, Sala M, Ponce S, Fernendez C, Nieto A, Kahatt C, Zeaiter A, Zaman K, Boni V, Arrondeau J, Martinez M, Delord J, Awada A, Kristeleit R, Longo F, Sarantopoulos J, Rubio M, Anton A, Wannesson L, Valdivia J, Shappiro G, Villalobos V, Santoro A, D'Arcangelo M, Aparicio L, Paz-Ares L. P1.12-03 Antitumor Activity of Single Agent Lurbinectedin in Patients with Relapsed SCLC Occurring ≥30 Days After Last Platinum Dose. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Gounder M, Merriam P, Ratan R, Patel S, Chugh R, Villalobos V, Thorton M, Van Tine B, Abdelhamid A, Joshi P, Whalen J, Yang J, Rajarethinam A, Duh M, Bobbili P, Cavanaugh C, Huynh L, Totev T, Demetri G. Real-world outcomes of patients with locally advanced or metastatic epithelioid sarcoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz283.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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9
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Villalobos V, Rial MJ, Pastor-Vargas C, Esteban I, Cuesta J, Sastre J. Occupational Asthma and Rhinitis due to Yellow and Red Henna in a Hairdresser. J Investig Allergol Clin Immunol 2019; 30:133-134. [PMID: 31530513 DOI: 10.18176/jiaci.0453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- V Villalobos
- Department of Allergy, Hospital Universitario Fundación Jiménez Díaz, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - M J Rial
- Department of Allergy, Hospital Universitario Fundación Jiménez Díaz, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - C Pastor-Vargas
- Department of Immunology, Instituto de Investigación Sanitaria Hospital Universitario Fundación Jiménez Díaz, (IIS-FJD, UAM), Madrid, Spain.,RETIC ARADyAL, Health Institute Carlos III, Madrid, Spain
| | - I Esteban
- Department of Allergy, Hospital Universitario Fundación Jiménez Díaz, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - J Cuesta
- Department of Allergy, Hospital Universitario Fundación Jiménez Díaz, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain.,RETIC ARADyAL, Health Institute Carlos III, Madrid, Spain
| | - J Sastre
- Department of Allergy, Hospital Universitario Fundación Jiménez Díaz, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain.,CIBER de Enfermedades Respiratorias (CIBERES), Health Institute Carlos III, Madrid, Spain
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Leal MS, Briones X, Villalobos V, Queneau Y, Leiva A, Ríos HE, Pavez J, Silva CP, Carrasco C, Neira-Carrillo A, Roth AD, Tamayo L, Urzúa MD. Amino Acid-Functionalized Polyelectrolyte Films as Bioactive Surfaces for Cell Adhesion. ACS Appl Mater Interfaces 2019; 11:19751-19762. [PMID: 31074956 DOI: 10.1021/acsami.9b02503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Surfaces were prepared with polyelectrolyte derivatives of poly(styrene- alt-maleic anhydride) (PSMA) functionalized with amino acids of different hydropathy indices, with the aim of evaluating the effect of the chemical functionality of polyelectrolytes on SH-SY5Y neuroblastoma cell adhesion. Functionalizing PSMA derivatives with l-glutamine, l-methionine, and l-tyrosine yielded PSMA-Gln, PSMA-Met, and PSMA-Tyr polyelectrolytes, respectively. We first studied the adsorption behavior of PSMA functionalized with amino acids on silicon wafer surfaces modified with 3-aminopropyltriethoxysilane at pH 4.0 and 7.0 and at low and high ionic strengths. The highest rate of polyelectrolyte adsorption was at pH 4.0 and high ionic strength and was higher with the glutamine and tyrosine films. The advance contact angles (θA) of the polyelectrolyte surfaces showed a moderate effect of ionic strength and pH on polyelectrolyte film wettability, with PSMA-Tyr being slightly more hydrophobic. Atomic force microscopy images of the polyelectrolyte surfaces showed two types of morphology: the well-defined globular nanostructure of PSMA-Met and PSMA-Tyr and densely packed nanofibrous-like structure of PSMA-Gln. The highest level of ionic strength caused a slight decrease in the size of the nanostructure that formed the surface domains, which was reflected in the degree of surface roughness. Cell adhesion assays with the polyelectrolyte film showed that SH-SY5Y neuroblastoma cells cultured on PSMA-Met present a well-extended morphology characterized by a stellate shape, with five or more actin-rich thin processes, whereas SH-SY5Y cells that were seeded on PSMA-Gln and PSMA-Tyr have a round morphology, with fewer and shorter processes. These results indicate that it is possible to modulate the surface characteristics of polyelectrolyte films based on their chemical functionality and environmental parameters such as pH and ionic strength in order to evaluate their effect on cell adhesion. Thus, surfaces prepared from polyelectrolytes functionalized with amino acids are an attractive and simple platform for cell adhesion, which can be used in developing biomaterials with modulated surface properties.
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Affiliation(s)
- M S Leal
- Departamento de Química, Facultad de Ciencias , Universidad de Chile , Las Palmeras , 3425 Santiago , Chile
| | - X Briones
- Departamento de Química, Facultad de Ciencias , Universidad de Chile , Las Palmeras , 3425 Santiago , Chile
| | - V Villalobos
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería , Universidad Autónoma de Chile , El Llano Subercaseaux , 2801 San Miguel , Chile
| | - Y Queneau
- Université de Lyon, ICBMS, UMR 5246, CNRS, UCBL, INSA Lyon, CPE Lyon, Bât. Lederer , 1 Rue Victor Grignard , 69622 Villeurbanne Cedex , France
| | - A Leiva
- Departamento Química Física, Facultad de Química , Pontificia Universidad Católica de Chile , Macul , 7820436 Santiago , Chile
| | - H E Ríos
- Departamento de Química, Facultad de Ciencias , Universidad de Chile , Las Palmeras , 3425 Santiago , Chile
| | - J Pavez
- Departamento de Química de los Materiales, Fac. de Química-Biología , Universidad de Santiago de Chile , Av. B. O'Higgins , 3363 Santiago , Chile
| | - C P Silva
- Departamento de Química de los Materiales, Fac. de Química-Biología , Universidad de Santiago de Chile , Av. B. O'Higgins , 3363 Santiago , Chile
| | - C Carrasco
- Departamento de Biología, Facultad de Ciencias , Universidad de Chile , P. C. 780-0023 Santiago , Chile
| | - Andrónico Neira-Carrillo
- Faculty de Ciencias Veterinarias y Pecuarias , Universidad de Chile , Av. Sta. Rosa , 11735 Santiago , Chile
| | - A D Roth
- Departamento de Biología, Facultad de Ciencias , Universidad de Chile , P. C. 780-0023 Santiago , Chile
| | - L Tamayo
- Departamento de Química, Facultad de Ciencias , Universidad de Chile , Las Palmeras , 3425 Santiago , Chile
| | - M D Urzúa
- Departamento de Química, Facultad de Ciencias , Universidad de Chile , Las Palmeras , 3425 Santiago , Chile
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Gounder M, Schöffski P, Villalobos V, Cote G, Chugh R, Chen TW, Jahan T, Loggers E, Italiano A, Gupta A, Agulnik M, Attia S, Jones R, van Tine B, Demetri G, Roche M, Sapir I, Daigle S, Clawson A, Stacchiotti S. A phase II, multicenter study of the EZH2 inhibitor tazemetostat in adults: Epithelioid sarcoma cohort (NCT02601950). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Daigle S, Stacchiotti S, Schöffski P, Villalobos V, Cote G, Chugh R, Chen TW, Jahan T, Loggers E, Italiano A, Gupta A, Agulnik M, Attia S, Jones R, van Tine B, Demetri G, Clawson A, Roche M, Blakemore S, Gounder M. Molecular characterization of epithelioid sarcoma (ES) tumors derived from patients enrolled in a phase II study of tazemetostat (NCT02601950). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy304] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bonilla E, Contreras R, Medina-Leendertz S, Mora M, Villalobos V, Bravo Y. Minocycline increases the life span and motor activity and decreases lipid peroxidation in manganese treated Drosophila melanogaster. Toxicology 2012; 294:50-3. [PMID: 22330257 DOI: 10.1016/j.tox.2012.01.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 01/25/2012] [Accepted: 01/30/2012] [Indexed: 01/13/2023]
Abstract
The objective of this study was to investigate the effect of Minocycline in the life span, motor activity, and lipid peroxidation of Drosophila melanogaster treated with manganese. Two days after emerging from the pupa male wild-type D. melanogaster were fed for 13 days with corn media containing 15 mM manganese. Then, they were divided in six groups of 300 flies each: group (a) remained treated with manganese (Mn group); group (b) began treatment with Minocycline (0.05 mM) (Mn-Minocycline group); group (c) received no additional treatment (Mn-no treatment group); group (d) simultaneously fed with manganese and Minocycline (Mn+Minocycline group). Additionally, a control (group e) with no treatment and another group (f) fed only with Minocycline after emerging from the pupa were added. All the manganese treated flies (group a) were dead on the 25th day. The life span in group f (101.66±1.33 days, mean S.E.M.) and of group b (97.00±3.46 days) were similar, but in both cases it was significantly higher than in group e (68.33±1.76 days), group c (67.05±2.30 days) and in those of group d (37.33±0.88). Manganese (groups a and d) decreased motor activity in D. melanogaster. In the Minocycline fed flies (groups b and f) a higher motor activity was detected. In Mn-Minocycline and Mn+Minocycline treated flies a significant decrease of MDA levels was detected when compared to the Minocycline group indicating that Minocycline and Mn appear to have a synergistic effect. In conclusion, Minocycline increased the life span and motor activity and decreased MDA formation of manganese treated D. melanogaster, probably by an inhibition of the production of reactive oxygen species. Manganese also exerted an antioxidant effect as shown by the significant decrease of MDA levels when compared to control flies.
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Affiliation(s)
- E Bonilla
- Centro de Investigaciones Biomédicas, Departamento de Neurobiología, Instituto Venezolano de Investigaciones Científicas, Maracaibo, Venezuela.
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Bonilla E, Contreras R, Medina-Leendertz S, Mora M, Villalobos V, Bravo Y. 3.258 RESVERATROL INCREASES THE LIFE SPAN OF MANGANESETREATED DROSOPHILA MELANOGASTER. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70929-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Thrasher JF, Villalobos V, Dorantes-Alonso A, Arillo-Santillán E, Cummings KM, O'Connor R, Fong GT. Does the availability of single cigarettes promote or inhibit cigarette consumption? Perceptions, prevalence and correlates of single cigarette use among adult Mexican smokers. Tob Control 2009; 18:431-7. [PMID: 19671535 PMCID: PMC2778078 DOI: 10.1136/tc.2008.029132] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2009] [Indexed: 11/24/2022]
Abstract
BACKGROUND Single cigarette use and its implications have rarely been studied among adults. OBJECTIVE To assess perceptions, prevalence and correlates of single cigarette purchase behaviour and its relation to harm reduction. DESIGN Focus group transcripts and cross-sectional data were analysed. SETTING AND PARTICIPANTS Focus groups among convenience samples of adult smokers in two Mexican cities and a population-based sample of 1079 adult smokers from the International Tobacco Control Policy Evaluation Project in four Mexican cities. MAIN OUTCOME MEASURES Purchase of single cigarettes last time cigarettes were bought, frequency of purchasing single cigarettes in the previous month and intention to quit in the next 6 months. RESULTS Focus group data indicated that smokers bought single cigarettes as a harm reduction strategy. Survey data indicated that 38% of participants purchased single cigarettes in the last month and 10% purchased them the last time they bought cigarettes, with more frequent consumption among young adults and those with lower income. Purchasing single cigarettes was independently associated with the frequency of using single cigarettes to reduce consumption and, less consistently, with the frequency of being cued to smoke after seeing single cigarettes for sale. Using single cigarettes to reduce consumption was positively associated with quit intention, whereas being cued to smoke by single cigarettes was negatively associated with quit intention. CONCLUSIONS Study results suggest that some adult Mexican smokers purchase single cigarettes as a method to limit, cut down on and even quit smoking. Nevertheless, promotion of the availability of single cigarettes as a harm reduction strategy could provide additional smoking cues that undermine quit attempts and promote youth smoking.
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Affiliation(s)
- J F Thrasher
- Department of Health Promotion, Education and Behavior, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA.
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Nicolas M, Pérez-Cano I, Villalobos V, Gómez E, Fernández L, Landeras J. Single Embryo Transfer as Strategy to Decrease of Twins After Assisted Reproduction Techniques. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Villalobos V, Suárez J, Estévez J, Novo E, Bonilla E. Effect of chronic manganese treatment on adenosine tissue levels and adenosine A2a receptor binding in diverse regions of mouse brain. Neurochem Res 2001; 26:1157-61. [PMID: 11700959 DOI: 10.1023/a:1012379024571] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In the present study the effects of chronic manganese (Mn) treatment on adenosine A2a receptor binding in mouse brain have been assessed. Male albino mice were divided in two groups: In the Mn-treated group, the animals were injected intraperitoneally (i.p.) with MnCl2 (5 mg/kg/day) five days per week during 9 weeks; in the control group, they were injected likewise with a saline solution. A significant decrease of the Kd without alteration of Bmax in the cerebellum and, an increase of the Kd and Bmax in hippocampus of mice treated with Mn were found. Also, an increase of Kd in frontal cortex was observed. The binding parameters in caudate nucleus, olfactory bulb and hypothalamus were not altered by Mn. A significant decrease in the adenosine concentration in caudate nucleus, olfactory bulb and hypothalamus, without significant changes in hippocampus, frontal cortex and cerebellum was also detected. These findings suggest that chronic administration of Mn could affect adenosine receptor function and turnover, depending on the brain region analyzed.
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Affiliation(s)
- V Villalobos
- Departamento de Biología, Facultad Experimental de Ciencias, Universidad del Zulia, Maracaibo, Venezuela.
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Villalobos V, Szabados L, Kolova L. Plant Biotechnology in Eastern Europe Current Situation and Perspectives. BIOTECHNOL BIOTEC EQ 1995. [DOI: 10.1080/13102818.1995.10818845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Villalobos V, Castro F, Bonilla E, Estévez J, Dávila JO. Manganese toxicity: muscarinic receptor binding in the mouse brain. J Toxicol Environ Health 1994; 42:185-91. [PMID: 8207754 DOI: 10.1080/15287399409531872] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In the present study we determined the effect of repeated administration of manganese chloride on the binding parameters of [3H]quinuclidinyl benzilate (3H-QNB) in striatum, frontal cortex, and hippocampus of mice. Daily intraperitoneal injections of manganese chloride (5 mg Mn/kg) 5 d/wk during 9 wk did not alter the receptor density (Bmax) and the dissociation constant (Kd) of 3H-QNB in the different brain regions studied. These results suggest that chronic treatment with manganese does not affect the binding characteristics of 3H-QNB to the cholinergic muscarinic receptors in mouse brain.
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Affiliation(s)
- V Villalobos
- Department of Neurobiology, Inbiomed-Fundacite, Maracaibo, Venezuela
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