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Fernández-Aceñero MJ, Barderas R, Peláez García A, Martínez-Useros J, Díez-Valladares L, Pérez-Aguirre, Ortega Medina L, de la Serna Esteban S, García-Botella S, Díaz Del Arco C, Galindo C. Aryl hydrocarbon receptor interacting protein (AIP) significantly influences prognosis of pancreatic carcinoma. Ann Diagn Pathol 2021; 53:151742. [PMID: 33975263 DOI: 10.1016/j.anndiagpath.2021.151742] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 02/26/2021] [Accepted: 03/28/2021] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Aryl hydrocarbon receptor (AHR) is a ligand-activated transcription factor. Aryl hydrocarbon receptor interacting protein (AIP) in one of AHR ligands. The aim of this study is to analyze the prognostic influence of AIP in pancreatic carcinoma. MATERIAL AND METHODS Retrospective case series with immunohistochemical analysis of AIP. We have estimated a multivariate Cox's model for the outcome (progression free and overall survival). RESULTS 204 patients were included in the study. As expected prognosis was poor and 67.8% died of disease. As for AIP 9.8% of the cases showed nuclear staining of the epithelial tumor cells and 59.4% a cytoplasmic one. Stroma was stained in 53.1% of the cases. Univariate survival analysis revealed a significantly worse prognosis of patients with cytoplasmic AIP expression (stroma and epithelium), but nuclear expression was associated to a better prognosis. In the multivariate analysis stromal AIP expression was an independent prognosticator of progression free survival, together with pT stage, histological grade and history of diabetes. DISCUSSION AIP Is a conserved cochaperone protein binding to many proteins. AIP has been proposed as a potential tumor suppressor gene. To date, no study has analyzed the immunohistochemical expression of AIP in pancreatic carcinoma. Our results indicate that both epithelial and stromal cytoplasmic expression of AIP is associated to bad prognosis, while nuclear translocation seems to improve prognosis. CONCLUSION Although we must deepen into the complex signaling pathways underlying this potential association, our results open a way to inhibiting AHR as a potential target against pancreatic carcinoma.
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Affiliation(s)
- M J Fernández-Aceñero
- Departments of Surgical Pathology, Hospital General Universitario Gregorio Marañón, UFIEC, Chronic Disease Programme, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain.
| | - R Barderas
- Departments of Surgical Pathology, Hospital General Universitario Gregorio Marañón, UFIEC, Chronic Disease Programme, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - A Peláez García
- Molecular Pathology and Therapeutic Targets Group, IdiPAZ, Hospital Universitario La Paz, Madrid, Spain
| | - J Martínez-Useros
- Oncology Translational Research Unit, University Hospital "Fundacion Jimenez Diaz", Madrid, Spain
| | - L Díez-Valladares
- Department of Surgery, Hospital Clínico Universitario San Carlos, Madrid, Spain
| | - Pérez-Aguirre
- Department of Surgery, Hospital Clínico Universitario San Carlos, Madrid, Spain
| | - L Ortega Medina
- Department of Surgical Pathology, Hospital Clínico Universitario San Carlos, Madrid, Spain
| | | | - S García-Botella
- Department of Surgery, Hospital Clínico Universitario San Carlos, Madrid, Spain
| | - C Díaz Del Arco
- Department of Surgical Pathology, Hospital Clínico Universitario San Carlos, Madrid, Spain
| | - C Galindo
- Medical College, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
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Zuniga Y, Dahildahil R, Mina J, Libanan A, Mojica R, Laude K, Galindo C, Eloriaga M, Labordo E. #UsapTayo: Utilizing Tweetchat for Mental Health Advocacy in the Philippines. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Mental health remains a public health concern across countries. It is estimated that 1 in 4 people will be affected by mental or neurological disorders at some point in their lives. In the Philippines, about 3 million Filipinos live with depression. Mortality rate for suicide is 3.2 per 100,000 population. Meanwhile, social media use remains high in the country with 76 million users in 2019. It is thus important to explore potential ways in maximizing social media for mental health advocacy.
From January 1 to December 31, 2019, a mental health tweetchat “#UsapTayo” (direct Filipino translation of WHO's #LetsTalk) was observed every 10th, 20th, 30th of the month from 7:00 to 8:00 PM. #UsapTayo aimed to answer how effective social media platforms like Twitter in promoting mental health awareness and education among Filipino Twitter users. Engagements and impressions from users were measured using Symplur, a healthcare hashtag analytics platform.
From January to December 2019, a total of 4,626 users participated in the tweetchat. Impressions for the year reached 52 million with an average of 4.75 million impressions per month. Engagements and impressions were recorded highest in the month of September with 1,169 users and 8.74 million, respectively. Overall, the tweetchat #UsapTayo was able to generate 14,385 tweets for the complete calendar year with suicide prevention identified as the most discussed topic among Filipino Twitter users.
Given the country's high social media penetration rate at 71% with Twitter ranking as the second most frequently used social media, leveraging this platform improves access to information and helps in normalizing conversations on mental health. #UsapTayo then partnered with #ThereIsHelp, a project initiated by Twitter to create safer spaces online through integration of suicide prevention measures. It was also recommended convening a multistakeholder consultation to develop a national mental health promotion and communication plan.
Key messages
Innovative platforms in social media like tweetchat can be leveraged to promote safer digital space for mental health and to strengthen online effort for suicide prevention especially among youth. It is important to maximize the use of social media platforms for mental health advocacy particularly suicide prevention given the Philippines’ high penetration rate and access to social media.
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Affiliation(s)
- Y Zuniga
- #MentalHealthPH, Inc., Quezon City, Philippines
| | | | - J Mina
- #MentalHealthPH, Inc., Quezon City, Philippines
| | - A Libanan
- #MentalHealthPH, Inc., Quezon City, Philippines
| | - R Mojica
- #MentalHealthPH, Inc., Quezon City, Philippines
| | - K Laude
- #MentalHealthPH, Inc., Quezon City, Philippines
| | - C Galindo
- #MentalHealthPH, Inc., Quezon City, Philippines
| | - M Eloriaga
- #MentalHealthPH, Inc., Quezon City, Philippines
| | - E Labordo
- #MentalHealthPH, Inc., Quezon City, Philippines
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Martínez-González MA, Buil-Cosiales P, Corella D, Bulló M, Fitó M, Vioque J, Romaguera D, Martínez JA, Wärnberg J, López-Miranda J, Estruch R, Bueno-Cavanillas A, Arós F, Tur JA, Tinahones F, Serra-Majem L, Martín V, Lapetra J, Vázquez C, Pintó X, Vidal J, Daimiel L, Delgado-Rodríguez M, Matía P, Ros E, Fernández-Aranda F, Botella C, Portillo MP, Lamuela-Raventós RM, Marcos A, Sáez G, Gómez-Gracia E, Ruiz-Canela M, Toledo E, Alvarez-Alvarez I, Díez-Espino J, Sorlí JV, Basora J, Castañer O, Schröder H, Navarrete-Muñoz EM, Zulet MA, García-Rios A, Salas-Salvadó J, Corella D, Estruch R, Fitó M, Martínez-González MA, Ros E, Salas-Salvadó J, Babio N, Ros E, Sánchez-Tainta A, Martínez-González MA, Fitó M, Schröder H, Marcos A, Corella D, Wärnberg J, Martínez-González MA, Estruch R, Fernández-Aranda F, Botella C, Salas-Salvadó J, Razquin C, Bes-Rastrollo M, Sanchez Tainta A, Vázquez Z, SanJulian Aranguren B, Goñi E, Goñi L, Barrientos I, Canales M, Sayón-Orea MC, Rico A, Basterra Gortari J, Garcia Arellano A, Lecea-Juarez O, Carlos Cenoz-Osinaga J, Bartolome-Resano J, Sola-Larraza† A, Lozano-Oloriz E, Cano-Valles B, Eguaras S, Güeto V, Pascual Roquet-Jalmar E, Galilea-Zabalza I, Lancova H, Ramallal R, Garcia-Perez ML, Estremera-Urabayen V, Ariz-Arnedo MJ, Hijos-Larraz C, Fernandez Alfaro C, Iñigo-Martinez B, Villanueva Moreno R, Martin-Almendros S, Barandiaran-Bengoetxea L, Fuertes-Goñi C, Lezaun-Indurain A, Guruchaga-Arcelus MJ, Olmedo-Cruz O, Iñigo-Martínez B, Escriche-Erviti L, Ansorena-Ros R, Sanmatin-Zabaleta R, Apalategi-Lasa J, Villanueva-Telleria J, Hernández-Espinosa MM, Arroyo-Bergera I, Herrera-Valdez L, Dorronsoro-Dorronsoro L, González JI, Sorlí JV, Portolés O, Fernández-Carrión R, Ortega-Azorín C, Barragán R, Asensio EM, Coltell O, Sáiz C, Osma R, Férriz E, González-Monje I, Giménez-Fernández F, Quiles L, Carrasco P, San Onofre N, Carratalá-Calvo A, Valero-Barceló C, Antón F, Mir C, Sánchez-Navarro S, Navas J, González-Gallego I, Bort-Llorca L, Pérez-Ollero L, Giner-Valero M, Monfort-Sáez R, Nadal-Sayol J, Pascual-Fuster V, Martínez-Pérez M, Riera C, Belda MV, Medina A, Miralles E, Ramírez-Esplugues MJ, Rojo-Furió M, Mattingley G, Delgado MA, Pages MA, Riofrío Y, Abuomar L, Blasco-Lafarga N, Tosca R, Lizán L, Guillem-Saiz P, Valcarce AM, Medina MD, Monfort R, de Valcárcel S, Tormo N, Felipe-Román O, Lafuente S, Navío EI, Aldana G, Crespo JV, Llosa JL, González-García L, Raga-Marí R, Pedret Llaberia R, Gonzalez R, Sagarra Álamo R, París Palleja F, Balsells J, Roca JM, Basora Gallisa T, Vizcaino J, Llobet Alpizarte P, Anguera Perpiñá C, Llauradó Vernet M, Caballero C, Garcia Barco M, Morán Martínez MD, García Rosselló J, Del Pozo A, Poblet Calaf C, Arcelin Zabal P, Floresví X, Ciutat Benet M, Palau Galindo A, Cabré Vila JJ, Dolz Andrés F, Boj Casajuana J, Ricard M, Saiz F, Isach A, Sanchez Marin Martinez M, Bulló M, Babio N, Becerra-Tomás N, Mestres G, Basora J, Mena-Sánchez G, Barrubés Piñol L, Gil Segura M, Papandreou C, Rosique Esteban N, Chig S, Abellán Cano I, Ruiz García V, Salas-Huetos A, Hernandez P, Canudas S, Camacho-Barcia L, García-Gavilán J, Diaz A, Castañer O, Muñoz MA, Zomeño MD, Hernaéz A, Torres L, Quifer M, Llimona R, Gal LA, Pérez A, Farràs M, Elosua R, Marrugat J, Vila J, Subirana I, Pérez S, Muñoz MA, Goday A, Chillaron Jordan JJ, Flores Lerroux JA, Benaiges Boix D, Farré M, Menoyo E, Muñoz-Aguayo D, Gaixas S, Blanchart G, Sanllorente A, Soria M, Valussi J, Cuenca A, Forcano L, Pastor A, Boronat A, Tello S, Cabañero M, Franco L, Schröder H, De la Torre R, Medrano C, Bayó J, García MT, Robledo V, Babi P, Canals E, Soldevila N, Carrés L, Roca C, Comas MS, Gasulla G, Herraiz X, Martínez A, Vinyoles E, Verdú JM, Masague Aguade M, Baltasar Massip E, Lopez Grau M, Mengual M, Moldon V, Vila Vergaz M, Cabanes Gómez Ciurana R, Gili Riu M, Palomeras Vidal A, Garcia de la Hera M, González Palacios S, Torres Collado L, Valera Gran D, Compañ Gabucio L, Oncina Canovas A, Notario Barandiaran L, Orozco Beltran D, Pertusa Martínez S, Cloquell Rodrigo B, Hernándis Marsán MV, Asensio A, Altozano Rodado MC, Ballester Baixauli JJ, Fernándis Brufal N, Martínez Vergara MC, Román Maciá J, Candela García I, Pedro Cases Pérez E, Tercero Maciá C, Mira Castejón LA, de los Ángeles García García I, Zazo JM, Gisbert Sellés C, Sánchez Botella C, Fiol M, Moñino M, Colom A, Konieczna J, Morey M, Zamanillo R, Galmés AM, Pereira V, Martín MA, Yáñez A, Llobera J, Ripoll J, Prieto R, Grases F, Costa A, Fernández-Palomeque C, Fortuny E, Noris M, Munuera S, Tomás F, Fiol F, Jover A, Janer JM, Vallespir C, Mattei I, Feuerbach N, del Mar Sureda M, Vega S, Quintana L, Fiol A, Amador M, González S, Coll J, Moyá A, Abete I, Cantero I, Cristobo C, Ibero-Baraibar I, Lezáun Burgui MD, Goñi Ruiz N, Bartolomé Resano R, Cano Cáceres E, Elcarte López T, Echarte Osacain E, Pérez Sanz B, Blanco Platero I, Andueza Azcárate SA, Gimeno Aznar A, Ursúa Sesma E, Ojeda Bilbao B, Martinez Jarauta J, Ugalde Sarasa L, Rípodas Echarte B, Güeto Rubio MV, Fernández-Crehuet Navajas J, Gutiérrez Bedmar M, García Rodriguez A, Mariscal Larrubia A, Carnero Varo M, Muñoz Bravo C, Barón-López FJ, Fernández García JC, Pérez-Farinós N, Moreno-Morales N, del C Rodríguez-Martínez M, Pérez-López J, Benavente-Marín JC, Crespo Oliva E, Contreras Fernández E, Carmona González FJ, Carabaño Moral R, Torres Moreno S, Martín Ruíz MV, Alcalá Cornide M, Fuentes Gómez V, Criado García J, Jiménez Morales AI, Delgado Casado N, Ortiz Morales A, Torres Peña JD, Gómez Delgado FJ, Rodríguez Cantalejo F, Caballero Villaraso J, Alcalá JF, Peña Orihuela PJ, Quintana Navarro G, Casas R, Domenech M, Viñas C, Castro-Barquero S, Ruiz-León AM, Sadurní M, Frontana G, Villanueva P, Gual M, Soriano R, Camafort M, Sierra C, Sacanella E, Sala-Vila A, Cots JM, Sarroca I, García M, Bermúdez N, Pérez A, Duaso I, de la Arada A, Hernández R, Simón C, de la Poza MA, Gil I, Vila M, Iglesias C, Assens N, Amatller M, Rams LL, Benet T, Fernández G, Teruel J, Azorin A, Cubells M, López D, Llovet JM, Gómez ML, Climente P, de Paula L, Soto J, Carbonell C, Llor C, Abat X, Cama A, Fortuny M, Domingo C, Liberal AI, Martínez T, Yañez E, Nieto MJ, Pérez A, Lloret E, Carrazoni C, Belles AM, Olmos C, Ramentol M, Capell MJ, Casas R, Giner I, Muñoz A, Martín R, Moron E, Bonillo A, Sánchez G, Calbó C, Pous J, Massip M, García Y, Massagué MC, Ibañez R, Llaona J, Vidal T, Vizcay N, Segura E, Galindo C, Moreno M, Caubet M, Altirriba J, Fluxà G, Toribio P, Torrent E, Anton JJ, Viaplana A, Vieytes G, Duch N, Pereira A, Moreno MA, Pérez A, Sant E, Gené J, Calvillo H, Pont F, Puig M, Casasayas M, Garrich A, Senar E, Martínez A, Boix I, Sequeira E, Aragunde V, Riera S, Salgado M, Fuentes M, Martín E, Ubieto A, Pallarés F, Sala C, Abilla A, Moreno S, Mayor E, Colom T, Gaspar A, Gómez A, Palacios L, Garrigosa R, García Molina L, Riquelme Gallego B, Cano Ibañez N, Maldonado Calvo A, López Maldonado A, Garrido EM, Baena Dominguez A, García Jiménez F, Thomas Carazo E, Jesús Turnes González A, González Jiménez F, Padilla Ruiz F, Machado Santiago J, Martínez Bellón MD, Pueyos Sánchez A, Arribas Mir L, Rodríguez Tapioles R, Dorador Atienza F, Baena Camus L, Osorio Martos C, Rueda Lozano D, López Alcázar M, Ramos Díaz F, Cruz Rosales Sierra M, Alguacil Cubero P, López Rodriguez A, Guerrero García F, Tormo Molina J, Ruiz Rodríguez F, Rekondo J, Salaverria I, Alonso-Gómez A, Belló MC, Loma-Osorio A, Tojal L, Bruyel P, Goicolea L, Sorto C, Casi Casanellas A, Arnal Otero ML, Ortueta Martínez De Arbulo J, Vinagre Morgado J, Romeo Ollora J, Urraca J, Sarriegui Carrera MI, Toribio FJ, Magán E, Rodríguez A, Castro Madrid S, Gómez Merino MT, Rodríguez Jiménez M, Gutiérrez Jodra M, López Alonso B, Iturralde Iriso J, Pascual Romero C, Izquierdo De La Guerra A, Abbate M, Aguilar I, Angullo E, Arenas A, Argelich E, Bibiloni MM, Bisbal Y, Bouzas C, Busquets C, Capó X, Carreres S, De la Peña A, Gallardo L, Gámez JM, García B, García C, Julibert A, Llompart I, Mascaró CM, Mateos D, Montemayor S, Pons A, Ripoll T, Rodríguez T, Salaberry E, Sureda A, Tejada S, Ugarriza L, Valiño L, Bernal López MR, Macías González M, Ruiz Nava J, Fernández García JC, Muñoz Garach A, Vilches Pérez A, González Banderas A, Alcaide Torres J, Vargas Candela A, León Fernández M, Hernández Robles R, Santamaría Fernández S, Marín JM, Valdés Hernández S, Villalobos JC, Ortiz A, Álvarez-Pérez J, Díaz Benítez EM, Díaz-Collado F, Sánchez-Villegas A, Pérez-Cabrera J, Casañas-Quintana LT, García-Guerra RB, Bautista-Castaño I, Ruano-Rodríguez C, Sarmiento de la Fe F, García-Pastor JA, Macías-Gutiérrez B, Falcón-Sanabria I, Simón-García C, Santana-Santana AJ, Álvarez-Álvarez JB, Díaz-González BV, Castillo Anzalas JM, Sosa-Also RE, Medina-Ponce J, Abajo Olea S, Adlbi Sibai A, Aguado Arconada A, Álvarez L, Carriedo Ule E, Escobar Fernández M, Ferradal García JI, Fernández Vázquez JP, García González M, González Donquiles C, González Quintana C, González Rivero F, Lavinia Popescu M, López Gil JI, López de la Iglesia J, Marcos Delgado A, Merino Acevedo C, Reguero Celada S, Rodríguez Bul M, Vilorio-Marqués L, Santos-Lozano JM, Miró-Moriano L, Domínguez-Espinaco C, Vaquero-Díaz S, García-Corte FJ, Santos-Calonge A, Toro-Cortés C, Pelegrina-López N, Urbano-Fernández V, Ortega-Calvo M, Lozano-Rodríguez J, Rivera-Benítez I, Caballero-Valderrama M, Iglesias-Bonilla P, Román-Torres P, Corchado-Albalat Y, Mayoral-Sánchez E, de Cos AI, Gutierrez S, Artola S, Galdon A, Gonzalo I, Más S, Sierra R, Luca B, Prieto L, Galera A, Gimenez-Gracia M, Figueras R, Poch M, Freixedas R, Trias F, Sarasa I, Fanlo M, Lafuente H, Liceran M, Rodriguez-Sanchez A, Pallarols C, Monedero J, Corbella X, Corbella E, Altés A, Vinagre I, Mestres C, Viaplana J, Serra M, Vera J, Freitas T, Ortega E, Pla I, Ordovás JM, Micó V, Berninches L, Concejo MJ, Muñoz J, Adrián M, de la Fuente Y, Albertos C, Villahoz E, Cornejo ML, Gaforio JJ, Moraleda S, Liétor N, Peis JI, Ureña T, Rueda M, Ballesta MI, Moreno Lopera C, Aragoneses Isabel C, Sirur Flores MA, Ceballos de Diego M, Bescos Cáceres T, Peña Cereceda Y, Martínez Abad M, Cabrera Vela R, González Cerrajero M, Rubio Herrera MA, Torrego Ellacuría M, Barabash Bustelo A, Ortiz Ramos M, Garin Barrutia U, Baños R, García-Palacios A, Cerdá Micó C, Estañ Capell N, Iradi A, Fandos Sánchez M. Cohort Profile: Design and methods of the PREDIMED-Plus randomized trial. Int J Epidemiol 2018; 48:387-388o. [PMID: 30476123 DOI: 10.1093/ije/dyy225] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2018] [Indexed: 01/04/2023] Open
Affiliation(s)
- Miguel A Martínez-González
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Pilar Buil-Cosiales
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
- Atención Primaria, Servicio Navarro de Salud-Osasunbidea, Pamplona, Spain
| | - Dolores Corella
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine, University of Valencia, Valencia, Spain
| | - Monica Bulló
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Rovira i Virgili University, Department of Biochemistry and Biotechnology, Human Nutrition Unit, IISPV, Hospital Universitari Sant Joan de Reus, Reus, Spain
| | - Montserrat Fitó
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Unit of Cardiovascular Risk and Nutrition, Institut Hospital del Mar de Investigaciones Médicas Municipal d’Investigació Mèdica (IMIM), Barcelona, Spain
| | - Jesús Vioque
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Miguel Hernandez University, ISABIAL-FISABIO, Alicante, Spain
| | - Dora Romaguera
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Clinical Epidemiology and Public Health Department, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca, Spain
| | - J Alfredo Martínez
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- University of Navarra, Department of Nutrition, Food Science and Physiology, IDISNA, Pamplona, Spain
| | - Julia Wärnberg
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Nursing, School of Health Sciences, University of Málaga-IBIMA, Málaga, Spain
| | - Jose López-Miranda
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Internal Medicine, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Cordoba, Spain
| | - Ramón Estruch
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Internal Medicine, IDIBAPS, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Aurora Bueno-Cavanillas
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine, University of Granada, Granada, Spain
| | - Fernando Arós
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Cardiology, University Hospital Araba, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain
| | - Josep A Tur
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Research Group on Community Nutrition & Oxidative Stress, University of Balearic Islands, Palma de Mallorca, Spain
| | - Francisco Tinahones
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Virgen de la Victoria Hospital, Department of Endocrinology, University of Málaga, Málaga, Spain
| | - Lluis Serra-Majem
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- University of Las Palmas de Gran Canaria, Research Institute of Biomedical and Health Sciences (IUIBS), Preventive Medicine Service, Centro Hospitalario Universitario Insular Materno Infantil (CHUIMI), Canarian Health Service, Las Palmas, Spain
| | - Vicente Martín
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Institute of Biomedicine (IBIOMED), University of León, León, Spain
| | - Jose Lapetra
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Family Medicine, Research Unit, Distrito Sanitario Atención Primaria Sevilla, Sevilla, Spain
| | - Clotilde Vázquez
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Endocrinology, Fundación Jiménez-Díaz, Madrid, Spain
| | - Xavier Pintó
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Lipids and Vascular Risk Unit, Internal Medicine, Hospital Universitario de Bellvitge, Hospitalet de Llobregat, Barcelona, Spain
| | - Josep Vidal
- CIBER Diabetes y enfermedades Metabólicas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Endocrinology, IDIBAPS, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Lidia Daimiel
- Nutritional Genomics and Epigenomics Group, IMDEA Food, CEI UAM + CSIC, Madrid, Spain
| | - Miguel Delgado-Rodríguez
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Division of Preventive Medicine, Faculty of Medicine, University of Jaén, Jaén, Spain
| | - Pilar Matía
- Department of Endocrinology and Nutrition, Instituto de Investigación Sanitaria Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Emilio Ros
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Lipid Clinic, Department of Endocrinology and Nutrition, Institut d’Investigacions Biomèdiques August Pi Sunyer (IDIBAPS), Hospital Clínic, Barcelona, Spain
| | - Fernando Fernández-Aranda
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Eating Disorders Unit, Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Hospitalet del Llobregat, Barcelona, Spain
| | - Cristina Botella
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Basic and Clinical Psychology and Psychobiology, Universitat Jaume I, Castellón de la Plana, Spain
| | - María Puy Portillo
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Nutrition and Food Science, Faculty of Pharmacy and Lucio Lascaray Research Center, Universidad del País Vasco (UPV/EHU), Vitoria, Spain
| | - Rosa M Lamuela-Raventós
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Nutrition, Food Science and Gastronomy, XaRTA, INSA, -UB, School of Pharmacy and Food Science, University of Barcelona, Barcelona, Spain
| | - Ascensión Marcos
- Institute of Food Science, Technology and Nutrition (ICTAN), Spanish National Research Council (CSIC), Madrid, Spain
| | - Guillermo Sáez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine and Odontology, University Hospital Dr. Peset, University of Valencia, Valencia, Spain
| | | | - Miguel Ruiz-Canela
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
| | - Estefania Toledo
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
| | - Ismael Alvarez-Alvarez
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
| | - Javier Díez-Espino
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
- Atención Primaria, Servicio Navarro de Salud-Osasunbidea, Pamplona, Spain
| | - José V Sorlí
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine, University of Valencia, Valencia, Spain
| | - Josep Basora
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Rovira i Virgili University, Department of Biochemistry and Biotechnology, Human Nutrition Unit, IISPV, Hospital Universitari Sant Joan de Reus, Reus, Spain
| | - Olga Castañer
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Unit of Cardiovascular Risk and Nutrition, Institut Hospital del Mar de Investigaciones Médicas Municipal d’Investigació Mèdica (IMIM), Barcelona, Spain
| | - Helmut Schröder
- Unit of Cardiovascular Risk and Nutrition, Institut Hospital del Mar de Investigaciones Médicas Municipal d’Investigació Mèdica (IMIM), Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Eva María Navarrete-Muñoz
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Miguel Hernandez University, ISABIAL-FISABIO, Alicante, Spain
| | - Maria Angeles Zulet
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- University of Navarra, Department of Nutrition, Food Science and Physiology, IDISNA, Pamplona, Spain
| | - Antonio García-Rios
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Internal Medicine, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Cordoba, Spain
| | - Jordi Salas-Salvadó
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Rovira i Virgili University, Department of Biochemistry and Biotechnology, Human Nutrition Unit, IISPV, Hospital Universitari Sant Joan de Reus, Reus, Spain
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Ludwig N, Kusumoto T, Galindo C, Peaupardin P, Pin S, Renault JP, Muller D, Yamauchi T, Kodaira S, Barillon R, Raffy Q. Radiolysis of phenylalanine in solution with Bragg-Peak energy protons. RADIAT MEAS 2018. [DOI: 10.1016/j.radmeas.2018.07.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
This paper presents the Robot-at-Home dataset (Robot@Home), a collection of raw and processed sensory data from domestic settings aimed at serving as a benchmark for semantic mapping algorithms through the categorization of objects and/or rooms. The dataset contains 87,000+ time-stamped observations gathered by a mobile robot endowed with a rig of four RGB-D cameras and a 2D laser scanner. Raw observations have been processed to produce different outcomes also distributed with the dataset, including 3D reconstructions and 2D geometric maps of the inspected rooms, both annotated with the ground truth categories of the surveyed rooms and objects. The proposed dataset is particularly suited as a testbed for object and/or room categorization systems, but it can be also exploited for a variety of tasks, including robot localization, 3D map building, SLAM, and object segmentation. Robot@Home is publicly available for the research community at http://mapir.isa.uma.es/work/robot-at-home-dataset .
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Larsen M, Galindo C, Ouellet D, Maxin G, Kristensen N, Lapierre H. Abomasal amino acid infusion in postpartum dairy cows: Effect on whole-body, splanchnic, and mammary amino acid metabolism. J Dairy Sci 2015; 98:7944-61. [DOI: 10.3168/jds.2015-9439] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 06/19/2015] [Indexed: 11/19/2022]
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7
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Galindo C, Larsen M, Ouellet DR, Maxin G, Pellerin D, Lapierre H. Abomasal amino acid infusion in postpartum dairy cows: Effect on whole-body, splanchnic, and mammary glucose metabolism. J Dairy Sci 2015; 98:7962-74. [PMID: 26319765 DOI: 10.3168/jds.2014-9013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 03/19/2015] [Indexed: 11/19/2022]
Abstract
Nine Holstein cows fitted with rumen cannulas and indwelling catheters in splanchnic blood vessels were used to study the effects of supplementing AA on milk lactose secretion, whole-body rate of appearance (WB-Ra) of glucose, and tissue metabolism of glucose, lactate, glycerol, and β-OH-butyrate (BHBA) in postpartum dairy cows according to a generalized randomized incomplete block design with repeated measures in time. At calving, cows were blocked according to parity (second and third or greater) and were allocated to 2 treatments: abomasal infusion of water (n=4) or abomasal infusion of free AA with casein profile (AA-CN; n=5) in addition to the same basal diet. The AA-CN infusion started with half the maximal dose at 1 d in milk (DIM) and then steadily decreased from 791 to 226 g/d from DIM 2 to 29 to cover the estimated essential AA deficit. On DIM 5, 15, and 29, D[6,6-(2)H2]-glucose (23.7 mmol/h) was infused into a jugular vein for 5h, and 6 blood samples were taken from arterial, portal, hepatic, and mammary sources at 45-min intervals, starting 1h after the initiation of the D[6,6-(2)H2]glucose infusion. Trans-organ fluxes were calculated as veno-arterial differences times plasma flow (splanchnic: downstream dilution of deacetylated para-aminohippurate; mammary: Fick principle using Phe+Tyr). Energy-corrected milk and lactose yields increased on average with AA-CN by 6.4 kg/d and 353 g/d, respectively, with no DIM × treatment interaction. Despite increased AA supply and increased demand for lactose secretion with AA-CN, net hepatic release of glucose remained unchanged, but WB-Ra of glucose tended to increase with AA-CN. Portal true flux of glucose increased with AA-CN and represented, on average, 17% of WB-Ra. Splanchnic true flux of glucose was unaltered by treatments and was numerically equivalent to WB-Ra, averaging 729 and 741 mmol/h, respectively. Mammary glucose utilization increased with AA-CN infusion, averaging 78% of WB-Ra, and increased gradually as lactation advanced. Net portal, hepatic, splanchnic, and mammary fluxes of lactate, glycerol, and BHBA were not affected by AA infusion. Increasing the supply of AA in postpartum dairy cows elevated the WB-Ra of glucose without affecting the true liver glucose release. The greater WB-Ra of glucose with abomasal AA infusion seemed to originate mainly from greater true portal-drained viscera release of glucose. Glucose utilization by the portal-drained viscera was unaffected by abomasal AA infusion, but the exact mechanism behind the greater true portal glucose release could not be assessed in the current study. The increased mammary glucose uptake was in line with the increased milk lactose yield. In early postpartum lactation, the demand for AA seems to be so high that even with increased AA supply, cows have metabolic priorities for AA other than hepatic gluconeogenesis.
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Affiliation(s)
- C Galindo
- Département de Sciences Animales, Université Laval, Québec, QC, Canada, G1V 0A6
| | - M Larsen
- Department of Animal Science, Aarhus University, Foulum, DK-8830 Tjele, Denmark
| | - D R Ouellet
- Dairy and Swine Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, QC, Canada J1M 0C8
| | - G Maxin
- Dairy and Swine Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, QC, Canada J1M 0C8
| | - D Pellerin
- Département de Sciences Animales, Université Laval, Québec, QC, Canada, G1V 0A6
| | - H Lapierre
- Dairy and Swine Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, QC, Canada J1M 0C8.
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Gupte M, Galindo C, Manda P, Cleator J, Murphy A, Kasasbeh E, Sawyer D. Anti‐Cachectic Role of Neuregulin‐1β in Heart Failure. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.825.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- M Gupte
- Department of Medicine Division of Cardiovascular MedicineVanderbilt University Medical CenterNashvilleTNUnited States
| | - C Galindo
- Department of Medicine Division of Cardiovascular MedicineVanderbilt University Medical CenterNashvilleTNUnited States
| | - P Manda
- Department of Medicine Division of Cardiovascular MedicineVanderbilt University Medical CenterNashvilleTNUnited States
| | - J Cleator
- Department of Medicine Division of Cardiovascular MedicineVanderbilt University Medical CenterNashvilleTNUnited States
| | - A Murphy
- Department of Medicine Division of Cardiovascular MedicineVanderbilt University Medical CenterNashvilleTNUnited States
| | - E Kasasbeh
- Department of Medicine Division of Cardiovascular MedicineVanderbilt University Medical CenterNashvilleTNUnited States
| | - D Sawyer
- Department of Medicine Division of Cardiovascular MedicineVanderbilt University Medical CenterNashvilleTNUnited States
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Sanchez-Calzada A, Navarro JL, Delgado L, Torres O, Torres A, Gastelum R, Romano P, Monares E, Galindo C, Camarena G, Aguirre J, Franco J. MEAN PLATELET VOLUME AS A MARKER OF SEPSIS IN PATIENTS ADMITTED TO INTENSIVE THERAPY. Intensive Care Med Exp 2015. [PMCID: PMC4797862 DOI: 10.1186/2197-425x-3-s1-a871] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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McMillin M, Galindo C, Pae HY, Frampton G, Di Patre PL, Quinn M, Whittington E, DeMorrow S. Gli1 activation and protection against hepatic encephalopathy is suppressed by circulating transforming growth factor β1 in mice. J Hepatol 2014; 61:1260-6. [PMID: 25046848 PMCID: PMC4253574 DOI: 10.1016/j.jhep.2014.07.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 06/30/2014] [Accepted: 07/08/2014] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Hepatic encephalopathy (HE) is a neurologic disorder that develops during liver failure. Few studies exist investigating systemic-central signalling during HE outside of inflammatory signalling. The transcription factor Gli1, which can be modulated by hedgehog signalling or transforming growth factor β1 (TGFβ1) signalling, has been shown to be protective in various neuropathies. We measured Gli1 expression in brain tissues from mice and evaluated how circulating TGFβ1 and canonical hedgehog signalling regulate its activation. METHODS Mice were injected with azoxymethane (AOM) to induce liver failure and HE in the presence of Gli1 vivo-morpholinos, the hedgehog inhibitor cyclopamine, Smoothened vivo-morpholinos, a Smoothened agonist, or TGFβ-neutralizing antibodies. Molecular analyses were used to assess Gli1, hedgehog signalling, and TGFβ1 signalling in the liver and brain of AOM mice and HE patients. RESULTS Gli1 expression was increased in brains of AOM mice and in HE patients. Intra-cortical infusion of Gli1 vivo-morpholinos exacerbated the neurologic deficits of AOM mice. Measures to modulate hedgehog signalling had no effect on HE neurological decline. Levels of TGFβ1 increased in the liver and serum of mice following AOM administration. TGFβ neutralizing antibodies slowed neurologic decline following AOM administration without significantly affecting liver damage. TGFβ1 inhibited Gli1 expression via a SMAD3-dependent mechanism. Conversely, inhibiting TGFβ1 increased Gli1 expression. CONCLUSIONS Cortical activation of Gli1 protects mice from induction of HE. TGFβ1 suppresses Gli1 in neurons via SMAD3 and promotes the neurologic decline. Strategies to activate Gli1 or inhibit TGFβ1 signalling might be developed to treat patients with HE.
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Affiliation(s)
- Matthew McMillin
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, TX, United States
| | - Cheryl Galindo
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, TX, United States
| | - Hae Yong Pae
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, TX, United States
| | - Gabriel Frampton
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, TX, United States
| | - Pier Luigi Di Patre
- Department of Pathology, Texas A&M Health Science Center College of Medicine, TX, United States; Department of Pathology, Baylor Scott & White Health, TX, United States
| | - Matthew Quinn
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, TX, United States
| | - Eric Whittington
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, TX, United States
| | - Sharon DeMorrow
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, TX, United States; Digestive Disease Research Center, TX, United States; Central Texas Veterans Health Care System, Temple, TX, United States.
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McMillin M, Frampton G, Thompson M, Galindo C, Standeford H, Whittington E, Alpini G, DeMorrow S. Neuronal CCL2 is upregulated during hepatic encephalopathy and contributes to microglia activation and neurological decline. J Neuroinflammation 2014; 11:121. [PMID: 25012628 PMCID: PMC4128607 DOI: 10.1186/1742-2094-11-121] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 06/30/2014] [Indexed: 12/31/2022] Open
Abstract
Background Acute liver failure leads to systemic complications with one of the most dangerous being a decline in neurological function, termed hepatic encephalopathy. Neurological dysfunction is exacerbated by an increase of toxic metabolites in the brain that lead to neuroinflammation. Following various liver diseases, hepatic and circulating chemokines, such as chemokine ligand 2 (CCL2), are elevated, though their effects on the brain following acute liver injury and subsequent hepatic encephalopathy are unknown. CCL2 is known to activate microglia in other neuropathies, leading to a proinflammatory response. However, the effects of CCL2 on microglia activation and the pathogenesis of hepatic encephalopathy following acute liver injury remain to be determined. Methods Hepatic encephalopathy was induced in mice via injection of azoxymethane (AOM) in the presence or absence of INCB 3284 dimesylate (INCB), a chemokine receptor 2 inhibitor, or C 021 dihydrochloride (C021), a chemokine receptor 4 inhibitor. Mice were monitored for neurological decline and time to coma (loss of all reflexes) was recorded. Tissue was collected at coma and used for real-time PCR, immunoblots, ELISA, or immunostaining analyses to assess the activation of microglia and consequences on pro-inflammatory cytokine expression. Results Following AOM administration, microglia activation was significantly increased in AOM-treated mice compared to controls. Concentrations of CCL2 in the liver, serum, and cortex were significantly elevated in AOM-treated mice compared to controls. Systemic administration of INCB or C021 reduced liver damage as assessed by serum liver enzyme biochemistry. Administration of INCB or C021 significantly improved the neurological outcomes of AOM-treated mice, reduced microglia activation, reduced phosphorylation of ERK1/2, and alleviated AOM-induced cytokine upregulation. Conclusions These findings suggest that CCL2 is elevated systemically following acute liver injury and that CCL2 is involved in both the microglia activation and neurological decline associated with hepatic encephalopathy. Methods used to modulate CCL2 levels and/or reduce CCR2/CCR4 activity may be potential therapeutic targets for the management of hepatic encephalopathy due to acute liver injury.
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Affiliation(s)
| | | | | | | | | | | | | | - Sharon DeMorrow
- Department of Internal Medicine, Texas A&M Health Science Center, College of Medicine, 1901 South 1st Street, Building 205, Temple, Texas, USA.
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Quinn M, McMillin M, Galindo C, Frampton G, Pae HY, DeMorrow S. Bile acids permeabilize the blood brain barrier after bile duct ligation in rats via Rac1-dependent mechanisms. Dig Liver Dis 2014; 46:527-34. [PMID: 24629820 PMCID: PMC4065628 DOI: 10.1016/j.dld.2014.01.159] [Citation(s) in RCA: 151] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 01/10/2014] [Accepted: 01/28/2014] [Indexed: 02/08/2023]
Abstract
BACKGROUND The blood brain barrier tightly regulates the passage of molecules into the brain and becomes leaky following obstructive cholestasis. The aim of this study was to determine if increased serum bile acids observed during cholestasis permeabilize the blood brain barrier. METHODS Rats underwent bile duct ligation or deoxycholic or chenodeoxycholic acid injections and blood brain barrier permeability assessed. In vitro, the permeability of rat brain microvessel endothelial cell monolayers, the expression and phosphorylation of occludin, ZO-1 and ZO-2 as well as the activity of Rac1 was assessed after treatment with plasma from cholestatic rats, or bile acid treatment, in the presence of a Rac1 inhibitor. RESULTS Blood brain barrier permeability was increased in vivo and in vitro following bile duct ligation or treatment with bile acids. Associated with the bile acid-stimulated increase in endothelial cell monolayer permeability was elevated Rac1 activity and increased phosphorylation of occludin. Pretreatment of endothelial cell monolayers with a Rac1 inhibitor prevented the effects of bile acid treatment on occludin phosphorylation and monolayer permeability. CONCLUSIONS These data suggest that increased circulating serum bile acids may contribute to the increased permeability of the blood brain barrier seen during obstructive cholestasis via disruption of tight junctions.
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Affiliation(s)
- Matthew Quinn
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA
| | - Matthew McMillin
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA
| | - Cheryl Galindo
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA
| | - Gabriel Frampton
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA
| | - Hae Yong Pae
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA
| | - Sharon DeMorrow
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA,Digestive Disease Research Center, Scott & White Hospital, Temple, Texas, USA,Central Texas Veterans Health Care System, Temple, Texas, USA
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Frampton G, Ueno Y, Quinn M, McMillin M, Pae HY, Galindo C, Leyva-Illades D, DeMorrow S. The novel growth factor, progranulin, stimulates mouse cholangiocyte proliferation via sirtuin-1-mediated inactivation of FOXO1. Am J Physiol Gastrointest Liver Physiol 2012; 303:G1202-11. [PMID: 23086914 PMCID: PMC3532458 DOI: 10.1152/ajpgi.00104.2012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Progranulin (PGRN), a secreted growth factor, regulates the proliferation of various epithelial cells. Its mechanism of action is largely unknown. Sirtuin 1 (Sirt1) is a protein deacetylase that is known to regulate the transcriptional activity of the forkhead receptor FOXO1, thereby modulating the balance between proapoptotic and cell cycle-arresting genes. We have shown that PGRN is overexpressed in cholangiocarcinoma and stimulates proliferation. However, its effects on hyperplastic cholangiocyte proliferation are unknown. In the present study, the expression of PGRN and its downstream targets was determined after bile duct ligation (BDL) in mice and in a mouse cholangiocyte cell line after stimulation with PGRN. The effects of PGRN on cholangiocyte proliferation were assessed in sham-operated (sham) and BDL mice treated with PGRN or by specifically knocking down endogenous PGRN expression using Vivo-Morpholinos or short hairpin RNA. PGRN expression and secretion were upregulated in proliferating cholangiocytes isolated after BDL. Treatment of mice with PGRN increased biliary mass and cholangiocyte proliferation in vivo and in vitro and enhanced cholangiocyte proliferation observed after BDL. PGRN treatment decreased Sirt1 expression and increased the acetylation of FOXO1, resulting in the cytoplasmic accumulation of FOXO1 in cholangiocytes. Overexpression of Sirt1 in vitro prevented the proliferative effects of PGRN. Conversely, knocking down PGRN expression in vitro or in vivo inhibited cholangiocyte proliferation. In conclusion, these data suggest that the upregulation of PGRN may be a key feature stimulating cholangiocyte proliferation. Modulating PGRN levels may be a viable technique for regulating the balance between ductal proliferation and ductopenia observed in a variety of cholangiopathies.
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Affiliation(s)
- Gabriel Frampton
- 1Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas; ,2Digestive Disease Research Center, Scott & White Hospital, Temple, Texas; ,3Central Texas Veterans Health Care System, Temple, Texas; and
| | - Yoshiyuki Ueno
- 4Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Matthew Quinn
- 1Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas; ,2Digestive Disease Research Center, Scott & White Hospital, Temple, Texas; ,3Central Texas Veterans Health Care System, Temple, Texas; and
| | - Matthew McMillin
- 1Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas; ,2Digestive Disease Research Center, Scott & White Hospital, Temple, Texas; ,3Central Texas Veterans Health Care System, Temple, Texas; and
| | - Hae Yong Pae
- 1Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas; ,2Digestive Disease Research Center, Scott & White Hospital, Temple, Texas; ,3Central Texas Veterans Health Care System, Temple, Texas; and
| | - Cheryl Galindo
- 1Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas; ,2Digestive Disease Research Center, Scott & White Hospital, Temple, Texas; ,3Central Texas Veterans Health Care System, Temple, Texas; and
| | - Dinorah Leyva-Illades
- 1Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas; ,2Digestive Disease Research Center, Scott & White Hospital, Temple, Texas; ,3Central Texas Veterans Health Care System, Temple, Texas; and
| | - Sharon DeMorrow
- 1Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas; ,2Digestive Disease Research Center, Scott & White Hospital, Temple, Texas; ,3Central Texas Veterans Health Care System, Temple, Texas; and
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McMillin M, Galindo C, Frampton G, Pae HY, DeMorrow S. Gli1 is activated via the non‐classical TGFβ/smad 3 pathway rather than the sonic hedgehog pathway in a murine model of hepatic encephalopathy. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1110.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Cheryl Galindo
- Texas A&M Health Science CenterTempleTX
- Scott & White HospitalTempleTX
| | - Gabriel Frampton
- Texas A&M Health Science CenterTempleTX
- Central Texas Veteran's Healthcare SystemTempleTX
| | - Hae Yong Pae
- Texas A&M Health Science CenterTempleTX
- Central Texas Veteran's Healthcare SystemTempleTX
| | - Sharon DeMorrow
- Texas A&M Health Science CenterTempleTX
- Central Texas Veteran's Healthcare SystemTempleTX
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DeMorrow S, Frampton G, Galindo C, Pae HY, Quinn M. Increased serum bile acids after extrahepatic biliary obstruction causes leakiness to the blood brain barrier via the disruption of tight junctions. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1110.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Gabriel Frampton
- Texas A&M Health Science CenterTempleTX
- Scott & White HospitalTempleTX
| | - Cheryl Galindo
- Texas A&M Health Science CenterTempleTX
- Central Texas Veteran's Healthcare SystemTempleTX
| | - Hae Yong Pae
- Texas A&M Health Science CenterTempleTX
- Central Texas Veteran's Healthcare SystemTempleTX
| | - Matthew Quinn
- Texas A&M Health Science CenterTempleTX
- Central Texas Veteran's Healthcare SystemTempleTX
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Frampton G, Invernizzi P, Bernuzzi F, Pae HY, Quinn M, Horvat D, Galindo C, Huang L, McMillin M, Cooper B, Rimassa L, DeMorrow S. Interleukin-6-driven progranulin expression increases cholangiocarcinoma growth by an Akt-dependent mechanism. Gut 2012; 61:268-77. [PMID: 22068162 PMCID: PMC4498955 DOI: 10.1136/gutjnl-2011-300643] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVES Cholangiocarcinoma is a devastating cancer of biliary origin with limited treatment options. The growth factor, progranulin, is overexpressed in a number of tumours. The study aims were to assess the expression of progranulin in cholangiocarcinoma and to determine its effects on tumour growth. METHODS The expression and secretion of progranulin were evaluated in multiple cholangiocarcinoma cell lines and in clinical samples from patients with cholangiocarcinoma. The role of interleukin 6 (IL-6)-mediated signalling in the expression of progranulin was assessed using a combination of specific inhibitors and shRNA knockdown techniques. The effect of progranulin on proliferation and Akt activation and subsequent effects of FOXO1 phosphorylation were assessed in vitro. Progranulin knockdown cell lines were established, and the effects on cholangiocarcinoma growth were determined. RESULTS Progranulin expression and secretion were upregulated in cholangiocarcinoma cell lines and tissue, which were in part via IL-6-mediated activation of the ERK1/2/RSK1/C/EBPβ pathway. Blocking any of these signalling molecules, by either pharmacological inhibitors or shRNA, prevented the IL-6-dependent activation of progranulin expression. Treatment of cholangiocarcinoma cells with recombinant progranulin increased cell proliferation in vitro by a mechanism involving Akt phosphorylation leading to phosphorylation and nuclear extrusion of FOXO1. Knockdown of progranulin expression in cholangiocarcinoma cells decreased the expression of proliferating cellular nuclear antigen, a marker of proliferative capacity, and slowed tumour growth in vivo. CONCLUSIONS Evidence is presented for a role for progranulin as a novel growth factor regulating cholangiocarcinoma growth. Specific targeting of progranulin may represent an alternative for the development of therapeutic strategies.
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Affiliation(s)
- Gabriel Frampton
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA,Department of Internal Medicine, Digestive Disease Research Center, Scott & White Hospital, Temple, Texas, USA
| | - Pietro Invernizzi
- Center for Autoimmune Liver Diseases, Division of Internal Medicine, IRCCS Istituto Clinico Humanitas, Rozzano, Italy
| | - Francesca Bernuzzi
- Center for Autoimmune Liver Diseases, Division of Internal Medicine, IRCCS Istituto Clinico Humanitas, Rozzano, Italy,Department of Translational Medicine, Università degli studi di Milano, Rozzano, Italy
| | - Hae Yong Pae
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA,Department of Internal Medicine, Digestive Disease Research Center, Scott & White Hospital, Temple, Texas, USA
| | - Matthew Quinn
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA,Department of Internal Medicine, Digestive Disease Research Center, Scott & White Hospital, Temple, Texas, USA
| | - Darijana Horvat
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA,Department of Internal Medicine, Digestive Disease Research Center, Scott & White Hospital, Temple, Texas, USA
| | - Cheryl Galindo
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA,Department of Internal Medicine, Digestive Disease Research Center, Scott & White Hospital, Temple, Texas, USA
| | - Li Huang
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Matthew McMillin
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA,Department of Internal Medicine, Digestive Disease Research Center, Scott & White Hospital, Temple, Texas, USA
| | | | - Lorenza Rimassa
- UO Oncologia medica e ematologia, Humanitas Cancer Center, IRCCS Istituto Clinico Humanitas, Rozzano, Italy
| | - Sharon DeMorrow
- Department of Internal Medicine, Texas A&M Health Science Center College of Medicine, Temple, Texas, USA,Department of Internal Medicine, Digestive Disease Research Center, Scott & White Hospital, Temple, Texas, USA,Research Service, Central Texas Veterans Health Care System, Temple, Texas USA
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Quinn M, Ueno Y, Pae HY, Huang L, Frampton G, Galindo C, Francis H, Horvat D, McMillin M, DeMorrow S. Suppression of the HPA axis during extrahepatic biliary obstruction induces cholangiocyte proliferation in the rat. Am J Physiol Gastrointest Liver Physiol 2012; 302:G182-93. [PMID: 21979757 PMCID: PMC3345968 DOI: 10.1152/ajpgi.00205.2011] [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] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Cholestatic patients often present with clinical features suggestive of adrenal insufficiency. In the bile duct-ligated (BDL) model of cholestasis, the hypothalamic-pituitary-adrenal (HPA) axis is suppressed. The consequences of this suppression on cholangiocyte proliferation are unknown. We evaluated 1) HPA axis activity in various rat models of cholestasis and 2) effects of HPA axis modulation on cholangiocyte proliferation. Expression of regulatory molecules of the HPA axis was determined after BDL, partial BDL, and α-naphthylisothiocyanate (ANIT) intoxication. The HPA axis was suppressed by inhibition of hypothalamic corticotropin-releasing hormone (CRH) expression by central administration of CRH-specific Vivo-morpholinos or by adrenalectomy. After BDL, the HPA axis was reactivated by 1) central administration of CRH, 2) systemic ACTH treatment, or 3) treatment with cortisol or corticosterone for 7 days postsurgery. There was decreased expression of 1) hypothalamic CRH, 2) pituitary ACTH, and 3) key glucocorticoid synthesis enzymes in the adrenal glands. Serum corticosterone and cortisol remained low after BDL (but not partial BDL) compared with sham surgery and after 2 wk of ANIT feeding. Experimental suppression of the HPA axis increased cholangiocyte proliferation, shown by increased cytokeratin-19- and proliferating cell nuclear antigen-positive cholangiocytes. Conversely, restoration of HPA axis activity inhibited BDL-induced cholangiocyte proliferation. Suppression of the HPA axis is an early event following BDL and induces cholangiocyte proliferation. Knowledge of the role of the HPA axis during cholestasis may lead to development of innovative treatment paradigms for chronic liver disease.
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Affiliation(s)
- Matthew Quinn
- 1Department of Internal Medicine, Texas A & M Health Science Center College of Medicine,
| | - Yoshiyuki Ueno
- 2Division of Gastroenterology, Tohoku University Graduate School of Medicine, Aobaku, Sendai, Japan; and
| | - Hae Yong Pae
- 1Department of Internal Medicine, Texas A & M Health Science Center College of Medicine,
| | - Li Huang
- 1Department of Internal Medicine, Texas A & M Health Science Center College of Medicine, ,3Department of Hepatobiliary Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Gabriel Frampton
- 1Department of Internal Medicine, Texas A & M Health Science Center College of Medicine,
| | - Cheryl Galindo
- 1Department of Internal Medicine, Texas A & M Health Science Center College of Medicine,
| | - Heather Francis
- 4Digestive Disease Research Center, ,5Division of Research and Education, Scott and White Hospital, ,6Central Texas Veterans Health Care System, Temple, Texas;
| | - Darijana Horvat
- 1Department of Internal Medicine, Texas A & M Health Science Center College of Medicine,
| | - Matthew McMillin
- 1Department of Internal Medicine, Texas A & M Health Science Center College of Medicine,
| | - Sharon DeMorrow
- 1Department of Internal Medicine, Texas A & M Health Science Center College of Medicine, ,4Digestive Disease Research Center, ,5Division of Research and Education, Scott and White Hospital, ,6Central Texas Veterans Health Care System, Temple, Texas;
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Farach N, Boyce S, Barrington C, Galindo C, Paz-Bailey G. P2-S6.04 Needs assessment on STI prevention services among men who have sex with men with HIV in Guatemala City, 2010. Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050108.356] [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: 11/04/2022]
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Garner HR, McCormick JF, Li LS, McIver LJ, Bubb VJ, George AC, Boothman DA, Quinn JP, Galindo C. Abstract P2-06-03: A Polymorphic AAAG Repeat in the Estrogen Receptor-Related-Gamma Gene May Represent a Breast Cancer Predisposition Biomarker. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p2-06-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: There is a strong genetic component to breast cancer, which is the most common neoplasm in women; however current risk markers are few, accounting for less than 10% of breast cancer cases. This means that the majority of familial breast cancers remain unexplained. Our laboratory has studied microsatellite polymorphisms for many years, and we developed techniques to assay these understudied regions of the genome en masse and individually via shot-gun methods to rapidly identify those that are likely to be polymorphic and therefore potentially contribute to phenotype.
Material and Methods: Using these novel approaches, we identified a polymorphic AAAG microsatellite repeat in the estrogen-related receptor gamma (ERR-γ) that is expanded in -10% of the general population. We genotyped over 300 individuals and found a longer allelic version (13+ repeat copies) in 14.3% of breast cancer patients, compared to only 4.8% in cancer-free individuals. We computationally identified 22 transcription factors that could bind directly to this AAAG repeat and the surrounding region. We hypothesized that the AAAG-containing region might serve as a promoter for ERR-y.
Results: We found a statistically significant number of breast cancer patients with the expanded AAAG allele, and preliminary experiments confirm that the AAAG-containing region of ERR-γ does indeed drive reporter gene expression in estrogen receptor positive (ER+) MCF-7 breast cancer cells. This was not the case for the ER-breast cancer cells (MDA-MB-231) we also examined. Our initial assessments also revealed that SKBR-3 breast cancer cells are naturally heterozygotic for the long and short allelic versions of the AAAG repeat. Our ongoing studies involve knockdown of transcription factors in MCF-7 cells that abrogate the endogenous expression of ERR-γ.
Discussion: The role of microsatellites in cancer is well defined for colon cancer, but few studies have been conducted to examine the contribution of these simple sequence repeats in breast cancer. We discovered a polymorphic AAAG repeat in the ERR-γ gene, and our studies indicate that a longer version of this repeat is more prevalent in the genomes of breast cancer patients. Based on our assessment, this allele carries a 2.98 relative risk for the development of breast cancer. The higher incidence of this putative biomarker in breast cancer patients may be a result of altered ERR-γ expression, as the AAAG-containing sequence can drive reporter expression. If the frequency of this potentially predictive marker is sustained in a larger population, and the mechanism by which it confers the cancer phenotype can be identified, it may contribute substantially as a biomarker offering surveillance, prophylactic surgery, and chemoprevention options to patients.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P2-06-03.
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Affiliation(s)
- HR Garner
- Virgnia Polytechnic and State University, Blacksburg; University of Texas Southwestern Medical Center at Dallas; University of Liverpool, United Kingdom
| | - JF McCormick
- Virgnia Polytechnic and State University, Blacksburg; University of Texas Southwestern Medical Center at Dallas; University of Liverpool, United Kingdom
| | - L-S Li
- Virgnia Polytechnic and State University, Blacksburg; University of Texas Southwestern Medical Center at Dallas; University of Liverpool, United Kingdom
| | - LJ McIver
- Virgnia Polytechnic and State University, Blacksburg; University of Texas Southwestern Medical Center at Dallas; University of Liverpool, United Kingdom
| | - VJ Bubb
- Virgnia Polytechnic and State University, Blacksburg; University of Texas Southwestern Medical Center at Dallas; University of Liverpool, United Kingdom
| | - AC George
- Virgnia Polytechnic and State University, Blacksburg; University of Texas Southwestern Medical Center at Dallas; University of Liverpool, United Kingdom
| | - DA Boothman
- Virgnia Polytechnic and State University, Blacksburg; University of Texas Southwestern Medical Center at Dallas; University of Liverpool, United Kingdom
| | - JP Quinn
- Virgnia Polytechnic and State University, Blacksburg; University of Texas Southwestern Medical Center at Dallas; University of Liverpool, United Kingdom
| | - C. Galindo
- Virgnia Polytechnic and State University, Blacksburg; University of Texas Southwestern Medical Center at Dallas; University of Liverpool, United Kingdom
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Galindo C, Gonzalez J, Fernádez-Madrigal JA. Interactive in-vehicle guidance through a multihierarchical representation of urban maps. INT J INTELL SYST 2010. [DOI: 10.1002/int.20414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Falguera M, Ruiz-González A, Schoenenberger JA, Touzón C, Gázquez I, Galindo C, Porcel JM. Prospective, randomised study to compare empirical treatment versus targeted treatment on the basis of the urine antigen results in hospitalised patients with community-acquired pneumonia. Thorax 2009; 65:101-6. [PMID: 19703825 DOI: 10.1136/thx.2009.118588] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Recommendations for diagnostic testing in hospitalised patients with community-acquired pneumonia remain controversial. The aim of the present study was to evaluate the impact of a therapeutic strategy based on the microbiological results provided by urinary antigen tests for Streptococcus pneumoniae and Legionella pneumophila. METHODS For a 2-year period, hospitalised patients with community-acquired pneumonia were randomly assigned to receive either empirical treatment, according to international guidelines, or targeted treatment, on the basis of the results from antigen tests. Outcome parameters, monetary costs and antibiotic exposure levels were compared. RESULTS Out of 194 enrolled patients, 177 were available for randomisation; 89 were assigned to empirical treatment and 88 were assigned to targeted treatment. Targeted treatment was associated with a slightly higher overall cost (euro 1657.00 vs euro 1617.20, p=0.28), reduction in the incidence of adverse events (9% vs 18%, p=0.12) and lower exposure to broad-spectrum antimicrobials (154.4 vs 183.3 defined daily doses per 100 patient days). No statistically significant differences in other outcome parameters were observed. Oral antibiotic treatment was started according to the results of antigen tests in 25 patients assigned to targeted treatment; these patients showed a statistically significant higher risk of clinical relapse as compared with the remaining population (12% vs 3%, p=0.04). CONCLUSIONS The routine implementation of urine antigen detection tests does not carry substantial outcome-related or economic benefits to hospitalised patients with community-acquired pneumonia. Narrowing the antibiotic treatment according to the urine antigen results may in fact be associated with a higher risk of clinical relapse.
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Affiliation(s)
- M Falguera
- Service of Internal Medicine, Hospital Universitari Arnau de Vilanova, Universitat de Lleida, Institut de Recerca Biomèdia de Lleida (IRBLLEIDA), Lleida, Spain.
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Tran T, Campbell J, Galindo C, Tran T, Nguyen T, Acosta C, Clemens J, Farrar J, Dolecek C. Antimicrobial Drug Resistance of Salmonella Typhi in Asia. Int J Infect Dis 2008. [DOI: 10.1016/j.ijid.2008.05.299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Beaudoin E, Favier A, Galindo C, Lapp A, Petit C, Gigmes D, Marque S, Bertin D. Reduced sample recovery in liquid chromatography at critical adsorption point of high molar mass polystyrene. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2007.11.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Galindo C, Mougin L, Nourreddine A. An improved radiochemical separation of uranium and thorium in environmental samples involving peroxide fusion. Appl Radiat Isot 2007; 65:9-16. [PMID: 16831555 DOI: 10.1016/j.apradiso.2006.05.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [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: 10/12/2005] [Revised: 04/19/2006] [Accepted: 05/17/2006] [Indexed: 11/22/2022]
Abstract
A radiochemical procedure for the accurate determination of uranium and thorium using peroxide fusion followed by ion exchange and extraction chromatography is described. The method of extraction of the element from solid samples is the most important factor in the investigation. It is demonstrated, by measuring a number of reference materials, that fusion with Na(2)O(2) ensures a complete destruction of the mineral lattice and greatly improves the determination of the true activity of actinides.
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Affiliation(s)
- C Galindo
- Institut Pluridisciplinaire Hubert-Curien UMR 7178 CNRS and Université Louis Pasteur 23, rue du Loess, BP28, 67037 Strasbourg Cedex 2, France.
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Galindo C, Mougin L, Fakhi S, Nourreddine A, Lamghari A, Hannache H. Distribution of naturally occurring radionuclides (U, Th) in Timahdit black shale (Morocco). J Environ Radioact 2007; 92:41-54. [PMID: 17098337 DOI: 10.1016/j.jenvrad.2006.09.005] [Citation(s) in RCA: 7] [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] [Received: 03/23/2006] [Revised: 09/05/2006] [Accepted: 09/08/2006] [Indexed: 05/12/2023]
Abstract
Attention has been focused recently on the use of Moroccan black oil shale as the raw material for production of a new type of adsorbent and its application to U and Th removal from contaminated wastewaters. The purpose of the present work is to provide a better understanding of the composition and structure of this shale and to determine its natural content in uranium and thorium. A black shale collected from Timahdit (Morocco) was analyzed by powder X-ray diffraction and SEM techniques. It was found that calcite, dolomite, quartz and clays constitute the main composition of the inorganic matrix. Pyrite crystals are also present. A selective leaching procedure, followed by radiochemical purification and alpha-counting, was performed to assess the distribution of naturally occurring radionuclides. Leaching results indicate that 238U, 235U, 234U, 232Th, 230Th and 228Th have multiple modes of occurrence in the shale. U is interpreted to have been concentrated under anaerobic conditions. An integrated isotopic approach showed the preferential mobilization of uranium carried by humic acids to carbonate and apatite phases. Th is partitioned between silicate minerals and pyrite.
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Affiliation(s)
- C Galindo
- Institut Pluridisciplinaire Hubert Curien, 23, rue du Loess BP28, 67037 Strasbourg Cedex 2, France.
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Natarajan M, Nayak BK, Galindo C, Mathur SP, Roldan FN, Meltz ML. Nuclear translocation and DNA-binding activity of NFKB (NF-kappaB) after exposure of human monocytes to pulsed ultra-wideband electromagnetic fields (1 kV/cm) fails to transactivate kappaB-dependent gene expression. Radiat Res 2006; 165:645-54. [PMID: 16802864 DOI: 10.1667/rr3564.1] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [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: 11/03/2022]
Abstract
The objective of this study was to investigate whether exposure of human monocytes to a pulsed ultra-wideband electromagnetic field (EMF) of 1 kV/cm average peak power triggers a signaling pathway responsible for the transcriptional regulation of NFKB (NF-kappaB)-dependent gene expression. Human Mono Mac 6 (MM6) cells were exposed intermittently to EMF pulses for a total of 90 min. The pulse width was 0.79+/-0.01 ns and the pulse repetition rate was 250 pps. The temperature of the medium was maintained at 37 degrees C in both sham- and EMF-exposed flasks. Total NFKB DNA-binding activity was measured in the nuclear extracts by the electrophoretic mobility shift assay. Cells exposed to the EMFs and incubated for 24 h postexposure showed a 3.5+/-0.2-fold increase in the NFKB DNA-binding activity. Since activation of NFKB was observed, the possibility of kappaB-dependent gene expression in response to exposure to the EMFs was investigated using NFKB signal-specific gene arrays. The results revealed no difference in the NFKB-dependent gene expression profiles at 8 or 24 h postexposure, indicating that activated NFKB does not lead to the differential expression of kappaB-dependent target genes. To determine whether the absence of the kappaB-dependent gene expression was due to compromised transcriptional regulation of NFKB, the functional activity of NFKB was examined in cells transiently transfected with Mercury Pathway constructs containing 4x NFKB binding sites associated either with the luciferase reporter system or a control vector. Pulsed EMF exposure did not induce NFKB-driven luciferase activity in these cells, indicating that the activation of NFKB at 24 h after the 1 kV/cm EMF exposure is functionally inactive. From these results, it is clear that the EMF-induced NFKB activation is only a transient response, with minimal or no downstream effect.
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Affiliation(s)
- M Natarajan
- Department of Radiation Oncology, University of Texas Health Science Center, Brooks City-Base, San Antonio, TX 78229-3900, USA.
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Galindo C, Cruz-Martin A, Blanco JL, Fernández-Madrigal JA, Gonzalez J. A multi-agent control architecture for a robotic wheelchair. Appl Bionics Biomech 2006. [DOI: 10.1533/abbi.2006.0027] [Citation(s) in RCA: 4] [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: 11/15/2022] Open
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Abstract
The results of the photocatalytic and photosensitized degradations of the monoazo dye AO20 in aqueous solution using suspended titanium dioxide are presented. Kinetic and mechanistic details have been elucidated using UV/Vis, FTIR and TCO techniques. It was proven that adsorption of dye molecules onto the support material is essential for the processes to be effective. Moreover, even if their mechanisms differ during the early stages, photocatalysis and photosensitization lead to very similar ultimate breakdown products. Indeed, the original dye anchored to the oxide surface systematically undergoes fast decomposition until it is transformed into CO2 or aliphatic acids (formic, acetic, oxalic acids), which react rather slowly with hydroxyl radicals or trapped holes.
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Affiliation(s)
- C Galindo
- Laboratoire de Chimie Textile, Ecole Nationale Supérieure de Chimie de Mulhouse, France.
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Schellenberg D, Menendez C, Kahigwa E, Font F, Galindo C, Acosta C, Schellenberg JA, Aponte JJ, Kimario J, Urassa H, Mshinda H, Tanner M, Alonso P. African children with malaria in an area of intense Plasmodium falciparum transmission: features on admission to the hospital and risk factors for death. Am J Trop Med Hyg 1999; 61:431-8. [PMID: 10497986 DOI: 10.4269/ajtmh.1999.61.431] [Citation(s) in RCA: 139] [Impact Index Per Article: 5.6] [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: 11/07/2022] Open
Abstract
Malaria remains the most important parasitic cause of mortality in humans. Its presentation is thought to vary according to the intensity of Plasmodium falciparum transmission. However, detailed descriptions of presenting features and risk factors for death are only available from moderate transmission settings. Such descriptions help to improve case management and identify priority research areas. Standardized systematic procedures were used to collect clinical and laboratory data on 6,624 children admitted to hospital over a 1-year period in an intensely malarious part of Tanzania. Frequencies of signs and symptoms were calculated and their association with a fatal outcome was assessed using multivariate logistic regression. There were 72 deaths among 2,432 malaria cases (case fatality rate [CFR] = 3.0%); 44% of the cases and 54% of the deaths were in individuals less than 1 year of age. There was no association between level of parasitemia and CFR. Increased risk of dying was independently found in all children with hypoglycemia (odds ratio [OR] = 6.7, 95% confidence interval [CI] = 3.9-11.7), in children 1-7 months of age with tachypnea (OR = 8.8, 95% CI = 2.6-30.5) and dehydration (OR = 5.0, 95% CI = 1.9-14.2), and in children 8 months to 4 years of age with chest indrawing (OR = 4.7, 95% CI = 2.0-11.2) and inability to localize a painful stimulus (OR = 6.9, 95% CI = 2.9-16.5). Children in the bottom quartile of weight-for-age were more likely to die (OR = 2.1, 95% CI = 1.3-3.5). Eight percent of the malaria cases had severe anemia (packed cell volume < 15%) but 24% received a blood transfusion. The epidemiology of malaria disease may be more complex than previously thought. Improved case management in a wide variety of health facilities may result from adequate identification and treatment of dehydration and hypoglycemia. Transfusion-requiring anemia is a major problem and sustainable, effective preventive measures are urgently needed.
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Affiliation(s)
- D Schellenberg
- Unidad de Epidemiologia y Bioestadistica, Hospital Clinic/Institut d'Investigaciones Biomèdiques August Pi I Sunyer, Villarroel, Barcelona, Spain
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Darbyshire DPF, Tornos F, Galindo C, Casquet C. Sm-Nd and Rb-Sr constraints on the age and origin of magnetite mineralization in the Jerez De Los Caballeros Iron District of Extremadura, SW Spain. Chin Sci Bull 1998. [DOI: 10.1007/bf02891402] [Citation(s) in RCA: 5] [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: 10/22/2022]
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Valero MV, Amador R, Aponte JJ, Narvaez A, Galindo C, Silva Y, Rosas J, Guzman F, Patarroyo ME. Evaluation of SPf66 malaria vaccine during a 22-month follow-up field trial in the Pacific coast of Colombia. Vaccine 1996; 14:1466-70. [PMID: 8994323 DOI: 10.1016/s0264-410x(96)00070-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [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: 02/03/2023]
Abstract
A double-blind randomized placebo-controlled field trial with the SPf66 malaria vaccine was carried out in an endemic area consisting of 14 small villages with exclusive fluvial access, in a rain forest area along the Rosario River, Colombia. A total of 1257 subjects completed the full three dose vaccination schedule on days 0, 30 and 180 (643 vaccinated group/623 placebo group) and were followed-up by passive and active surveillance over a period of 22 months. One hundred and thirty-four Plasmodium falciparum malaria episodes were detected (53 in vaccinated group/81 in placebo group), yielding an attack rate of 5.47 cases/100 person years of follow-up (pyears) in the vaccine group and 8.44/100 pyears in the placebo group. The estimated vaccine protective efficacy was 35.2% (95% CI 8.4-54.2%, P = 0.01). This result supports earlier findings that the SPf66 malaria vaccine diminishes the risk of infection by P. falciparum in endemic areas of South America.
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Affiliation(s)
- M V Valero
- Instituto de Inmunologia, Hospital San Juan de Dios, Universidad Nacional de Colombia, Santafé de Bogotá, Colombia
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Galindo C, Buenestado J, Reñé JM, Piñol MC. [Acute pancreatitis associated with hepatotoxicity induced by amoxicillin-clavulanic acid]. Rev Esp Enferm Dig 1995; 87:597-600. [PMID: 7577112] [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] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A 25-year old man suffered from acute pancreatitis and cholestatic acute hepatitis simultaneously after 4 weeks of an antibiotic treatment withdrawal (amoxicillin plus clavulanic acid) which was given for pharyngitis. Other potential etiological causes of both acute pancreatitis and liver disease, were excluded. The causal relationship between amoxicillin plus clavulanic acid and cholestatic hepatitis is well know, but no data has been reported regarding acute pancreatitis. The medical literature is reviewed and the mechanisms of toxicity are discussed.
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Affiliation(s)
- C Galindo
- Sección Digestivo, Hospital Arnau de Vilanova, Facultad de Medicina, Lleida
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Abstract
To determine if dexamethasone has a role in the treatment of meningeal leukemia, 8 consecutive patients with acute lymphoblastic and signs or symptoms of CNS were included in the study. After the confirmation of leukemic blast cells on cerebrospinal fluid, they received intrathecal and IV dexamethasone; 3 days later the patients received "triple" intrathecal chemotherapy with dexamethasone, methotrexate and cytarabine, and the spinal fluid was studied again. All patients had good clinical response and 7 out of the 8 patients showed reduction on the CSF cell count after the use of dexamethasone alone. The results suggest that dexamethasone is a lymphocytic agent that could play a more active role in the prevention and therapy of meningeal leukemia and should be preferred over hydrocortisone in the so called "triple" intrathecal chemotherapy for the prevention and treatment of CNS leukemia.
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Affiliation(s)
- D Gómez-Almaguer
- Department of Hematology, Hospital Universitairo UANL, Monterrey, Mexico
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Falguera M, Perez-Mur J, Galindo C, Garcia M. Prevalence and outcome of pneumococcal carrier human immunodeficiency virus-infected patients. J Infect Dis 1993; 168:511. [PMID: 8335996 DOI: 10.1093/infdis/168.2.511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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Valero MV, Amador LR, Galindo C, Figueroa J, Bello MS, Murillo LA, Mora AL, Patarroyo G, Rocha CL, Rojas M. Vaccination with SPf66, a chemically synthesised vaccine, against Plasmodium falciparum malaria in Colombia. Lancet 1993; 341:705-10. [PMID: 8095622 DOI: 10.1016/0140-6736(93)90483-w] [Citation(s) in RCA: 144] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Preclinical and clinical studies have established the safety and immunogenicity of the chemically synthesised SPf66 malaria vaccine. The present study is a phase III randomised, double-blind, placebo-controlled, efficacy trial completed in La Tola, Colombia. 1548 volunteers over one year of age received three doses of either the vaccine (n = 738) or placebo (n = 810). Active and passive case detection methods were used to document clinical episodes of malaria among the study population. The follow-up period began one month after the third dose and lasted for one year. 168 and 297 episodes of Plasmodium falciparum malaria were documented in the SPf66 group and the placebo group, respectively; this corresponds to a crude protective efficacy of 38.8%. Incidence rates for first or only P falciparum malarial episodes were 22.3% per annum among the vaccinee group and 33.5% among the placebo group (RR = 1.5; 95% Cl 1.23, 1.84). Therefore, the protective efficacy of SPf66 against first or only episodes was 33.6% (95% Cl 18.8, 45.7), being highest in children aged 1-4 years (77%) and adults older than 45 years (67%). The estimated protective efficacy against second episodes was 50.5% (95% Cl 12.9-71.9). Our study shows that the chemically synthesised SPf66 malaria vaccine is safe, immunogenic, and protective against P falciparum malaria in semi-immune populations subject to natural challenge.
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Affiliation(s)
- M V Valero
- Instituto de Inmunología, Hospital San Juan de Dios, Universidad Nacional de Colombia, Bogota
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Abstract
Meiosis in four primary hexaploid triticale lines, in their component two tetraploid wheat and two rye parents, and in the hybrids obtained by crossing within each ploidic level was studied using Giemsa banding. The individual chromosomes were identified and their meiotic behaviour at first metaphase was analyzed in each line. In each new triticale line, the level of pairing for wheat chromosomes was moderately reduced and for rye chromosomes was very significantly reduced, in comparison with that of the wheat and rye parents used to synthesize it. The pairing intensity observed suggests the presence of a strong negative intergenomic interaction between the rye and wheat genomes in triticale, irrespective of whether the rye is in a homozygous or heterozygous genotypic condition. The homozygosity or heterozygosity in the wheat constituent does not appear to effect the behaviour of the rye chromosomes in triticale.Key words: triticale, meiosis, C-banding, heterosis.
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Sánchez Olavarría J, Galindo C, Montero M, Baquero Y, Victorica J, Satrústegui J. Measurement of 'in situ' mitochondrial membrane potential in Ehrlich ascites tumor cells during aerobic glycolysis. Biochim Biophys Acta 1988; 935:322-32. [PMID: 3167052 DOI: 10.1016/0005-2728(88)90227-7] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
(1) A method is presented for continuous and simultaneous monitoring of the 'in situ' mitochondrial membrane potential (delta psi m) and respiration rate of Ehrlich ascites tumor cells. The method involves permeabilization of the plasma membrane, achieved by treatment with low digitonin concentration, and the use of a TPP+ selective electrode attached to an oxygraph vessel. Binding of the probe inside the cells was analyzed assuming a proportional relationship between the amount of bound TPP+ and the free concentration of the lipophilic cation. (2) Evidence is reported that the addition of glucose to digitonin-permeabilized Ehrlich ascites tumor cells causes a decrease of mitochondrial membrane potential that coincided with a transient enhancement of the respiration rate and remained unchanged during the subsequent Crabtree effect. We have characterized the effect of glucose on delta psi m by determining its dependent on the glycolytic pathway and its sensitivity towards oligomycin. The mutual relationships between glucose and ADP effects on the mitochondrial membrane potential were also studied. A plausible mechanism underlying the depolarization of mitochondrial membrane induced by glucose is presented.
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Affiliation(s)
- J Sánchez Olavarría
- Departamento de Bioquímica y Biología Molecular, Universidad de Alcalá de Henares, Madrid, Spain
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Galindo C, Aravena H. [Morphologic study of the mandible in Class II, division 1]. Rev Esp Estomatol 1982; 30:449-54. [PMID: 6964741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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