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Prata F, Ragusa A, Civitella A, Tuzzolo P, Tedesco F, Cacciatore L, Iannuzzi A, Callè P, Raso G, Fantozzi M, Pira M, Ricci M, Pino M, Minore A, Basile S, Testa A, Crimi VG, Deanesi N, Travino A, D'Addurno G, Scarpa RM, Papalia R. Robot-assisted partial nephrectomy using the novel Hugo™ RAS system: Feasibility, setting and perioperative outcomes of the first off-clamp series. Urologia 2024:3915603231220109. [PMID: 38174713 DOI: 10.1177/03915603231220109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
INTRODUCTION Hugo Robot-Assisted Surgery (RAS) System has been conceived with enhanced modularity but its role for nephron-sparing surgery setting still remains poorly explored. We aimed to describe our experience in robot-assisted partial nephrectomy (RAPN) with a three-arms setting for the first off-clamp series using the new Hugo RAS System. METHODS Patients were placed on an extended flank position at the margin of the surgical bed with a slightly flexion (45°). The first 11 mm robotic trocar (camera port) was placed along the pararectal line 14 ± 2 cm far from the umbilicus. The pneumoperitoneum was then induced through the AirSeal system (SurgiQuest, Milford, Connecticut, USA©). Two more 8 mm operative robotic ports were placed under direct vision, either 8 ± 1 cm far from optic's port. Two 12 mm laparoscopic ports for bed-assistant were placed between robotic ports. Monopolar curved shears, fenestrated grasper, and large needle driver were used in a three-instruments configuration. RESULTS Off-clamp RAPN was successfully performed in seven patients with cT1 renal masses using a trans-peritoneal route. Median port placement and docking time was 6 min (IQR, 4-8 min). Hemostasis was achieved through renorraphy using a single transfix stitch with sliding clips technique. There was no need for additional ports placement. No intraoperative complications occurred, no clashing of robotic instruments or between the robotic arms was observed. No technical failures of the system occurred. Median console time was 83 min (IQR, 68-115 min). Median estimated blood loss were 200 ml (IQR, 50-400 ml). All patients were discharged between post-operative day 2 and 3, without the need of hospital readmission. No complications were recorded within the first 30 post-operative days. CONCLUSIONS We performed the first series of off-clamp RAPN using the novel HUGO RAS System. This novel robotic platform showed an easy-friendly docking system, providing excellent perioperative outcomes with a simple three-arms configuration.
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Affiliation(s)
- F Prata
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - A Ragusa
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - A Civitella
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - P Tuzzolo
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - F Tedesco
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - L Cacciatore
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - A Iannuzzi
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - P Callè
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - G Raso
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - M Fantozzi
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - M Pira
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - M Ricci
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - M Pino
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - A Minore
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - S Basile
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - A Testa
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - V G Crimi
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - N Deanesi
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - A Travino
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - G D'Addurno
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - R M Scarpa
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
| | - R Papalia
- Fondazione Policlinico Universitario Campus Bio-Medico, Department of Urology, Rome, Italy
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2
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Aguilera M, Tobar-Calfucoy E, Rojas-Martínez V, Norambuena R, Serrano MJ, Cifuentes O, Zamudio MS, San Martín D, Lara P, Sabag A, Zabner M, Tichy D, Camejo P, León L, Pino M, Ulloa S, Rojas F, Pieringer C, Muster C, Castillo D, Ferreira N, Avendaño C, Canaval M, Pieringer H, Cifuentes P, Cifuentes Muñoz N. Development and characterization of a bacteriophage cocktail with high lytic efficacy against field-isolated Salmonella enterica. Poult Sci 2023; 102:103125. [PMID: 37879168 PMCID: PMC10618821 DOI: 10.1016/j.psj.2023.103125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/14/2023] [Accepted: 09/14/2023] [Indexed: 10/27/2023] Open
Abstract
Salmonella spp. is a prevalent pathogen that causes great public health concern worldwide. Bacteriophage-based cocktails have arisen as an alternative to antibiotics to inhibit the growth of Salmonella. However, the bactericidal effect of bacteriophage cocktails in vivo largely differs from their observed effect in vitro. This is partly because in vitro developments of cocktails do not always consider the bacterial diversity nor the environmental conditions where bacteriophages will have to replicate. Here, we isolated and sequenced 47 bacteriophages that showed variable degrees of lytic activity against 258 Salmonella isolates from a commercial broiler company in Brazil. Three of these bacteriophages were characterized and selected to assemble a cocktail. In vitro quantitative assays determined the cocktail to be highly effective against multiple serovars of Salmonella, including Minnesota and Heidelberg. Remarkably, the in vitro lytic activity of the cocktail was retained or improved in conditions that more closely resembled the chicken gut, such as anaerobiosis, 42°C, and Salmonella mono-strain biofilms. Analysis of bacterial cross-resistance between the 3 bacteriophages composing the cocktail revealed limited or no generation of cross-resistance. Our results highlight the relevance of an optimized flux of work to develop bacteriophage cocktails against Salmonella with high lytic efficacy and strong potential to be applied in vivo in commercial broiler farms.
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Affiliation(s)
- Matías Aguilera
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Eduardo Tobar-Calfucoy
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Victoria Rojas-Martínez
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Rodrigo Norambuena
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - María Jesús Serrano
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Onix Cifuentes
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - María Sofía Zamudio
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Daniel San Martín
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Pabla Lara
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Andrea Sabag
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Marcela Zabner
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Daniel Tichy
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Pamela Camejo
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Luis León
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Michael Pino
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Soledad Ulloa
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Felipe Rojas
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Christian Pieringer
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Cecilia Muster
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Daniel Castillo
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Nicolás Ferreira
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Camilo Avendaño
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Mauro Canaval
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Hans Pieringer
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Pablo Cifuentes
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile
| | - Nicolás Cifuentes Muñoz
- PhageLab Chile SpA, Vicuña Mackenna 4860, Centro de Innovación Anacleto Angelini 5th floor, Santiago, Chile..
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Sandoval E, Moreno-Castaño A, Pino M, Pereda D, Samanbar S, Pruna-Guillen R, Fernandez S, Roman J, Gomez V, Muro A, Castro P, Escolar G, Diaz-Ricart M. Primary Hemostasis Defect Due to Acquired Von Willebrand Disease and Platelet Activation During Extracorporeal Life Support. In Vitro Correction by Purified VWF. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1529] [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: 11/30/2022] Open
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4
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Moreno-Castaño AB, Ramos A, Pino M, Parra R, Altisent C, Vidal F, Corrales I, Borràs N, Torramadé-Moix S, Palomo M, Escolar G, Diaz-Ricart M. Diagnostic challenges in von Willebrand disease. Report of two cases with emphasis on multimeric and molecular analysis. Platelets 2020; 32:697-700. [PMID: 32664776 DOI: 10.1080/09537104.2020.1784403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Identification of qualitative variants of von Willebrand disease (VWD) can be a diagnostic challenge because of discrepant results obtained in the multiple laboratory tests available for its appropriate classification. We report two cases of infrequent inherited variants of VWD with unclear preliminary results with the test panel available at the time of first consultation and that were finally diagnosed as a VWD type 2A/IID with a c.8318 G > C, p.Cys2773Ser mutation and a VWD type 2M with c.4225 T > G, p.Val1409Phe mutation, respectively. The description of these two cases highlights that despite the limited diagnostic panel for the evaluation of von Willebrand Factor (VWF) functionality, the multimeric analysis and genetic family studies were fundamental tools to achieve the final diagnosis.
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Affiliation(s)
- A B Moreno-Castaño
- Hemostasis and Eritropathology Unit, Hematopathology, Department of Pathology, CDB, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain.,Barcelona Endothelium Team, Barcelona
| | - A Ramos
- Hemostasis and Eritropathology Unit, Hematopathology, Department of Pathology, CDB, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain.,Barcelona Endothelium Team, Barcelona
| | - M Pino
- Hemostasis and Eritropathology Unit, Hematopathology, Department of Pathology, CDB, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain.,Barcelona Endothelium Team, Barcelona
| | - R Parra
- Congenital Coagulopathies Department, Banc de Sang i Teixits, Barcelona
| | - C Altisent
- Medicina Transfusional, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona
| | - F Vidal
- Congenital Coagulopathies Department, Banc de Sang i Teixits, Barcelona.,Medicina Transfusional, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona.,CIBER de Enfermedades Cardiovasculares (CIBERCV), Spain
| | - I Corrales
- Congenital Coagulopathies Department, Banc de Sang i Teixits, Barcelona.,Medicina Transfusional, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona
| | - N Borràs
- Congenital Coagulopathies Department, Banc de Sang i Teixits, Barcelona.,Medicina Transfusional, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona
| | - S Torramadé-Moix
- Hemostasis and Eritropathology Unit, Hematopathology, Department of Pathology, CDB, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain.,Barcelona Endothelium Team, Barcelona
| | - M Palomo
- Hemostasis and Eritropathology Unit, Hematopathology, Department of Pathology, CDB, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain.,Barcelona Endothelium Team, Barcelona.,Josep Carreras Leukaemia Research Institute (IJC), Barcelona
| | - G Escolar
- Hemostasis and Eritropathology Unit, Hematopathology, Department of Pathology, CDB, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain.,Barcelona Endothelium Team, Barcelona
| | - M Diaz-Ricart
- Hemostasis and Eritropathology Unit, Hematopathology, Department of Pathology, CDB, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain.,Barcelona Endothelium Team, Barcelona
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5
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Keck TM, Nguyen C, Kurtyan E, Stephanie B, Crowthers R, Tharakan J, Briaguez W, Ricchezza J, Pino M, Brunt D, Sullivan HJ, Wu C. Developing New Dopamine D2 Receptor Agonists and Partial Agonists for Parkinson’s Disease and Schizophrenia. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.04386] [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]
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6
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Pino M, King C, Shim I, Wang H, Nguyen K, Samer S, Harper J, Lifson J, Reynaldi A, Deleage C, Padhan K, Cervasi B, Davenport M, Petrovas C, Lederman M, Paiardini M. Fingolimod treatment at ART initiation delays SIV rebound after ART interruption. J Virus Erad 2019. [DOI: 10.1016/s2055-6640(20)31078-5] [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: 11/26/2022] Open
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7
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Schirripa M, Biason P, Cortiula F, Pino M, Urbano F, Antoniotti C, Corallo S, Gelsomino F, Orlandi A, Lonardi S, Bergamo F, Munari G, Malapelle U, Rugge M, Mescoli C, Reggiani Bonetti L, Lanza G, Dei Tos A, De Maglio G, Zagonel V, Loupakis F, Fassan M. Clinico-pathological and molecular characterization of BRAF mutant metastatic colorectal cancer (mCRC): Are all mutations created equal? Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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8
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Jaramillo E, Bertrán C, Aguilar G, Turner A, Pino M. Annual fluctuations of the subtidal macroinfauna in an Estuary of South of Chile. Studies on Neotropical Fauna and Environment 2018. [DOI: 10.1080/01650528509360668] [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] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- E. Jaramillo
- a Instituto de Zoología , Universidad Austral de Chile , Valdivia , CHILE
| | - C. Bertrán
- a Instituto de Zoología , Universidad Austral de Chile , Valdivia , CHILE
| | - G. Aguilar
- a Instituto de Zoología , Universidad Austral de Chile , Valdivia , CHILE
| | - A. Turner
- a Instituto de Zoología , Universidad Austral de Chile , Valdivia , CHILE
| | - M. Pino
- b Instituto de Geociencias , Universidad Austral de Chile , Valdivia , CHILE
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9
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Deacon RMJ, Hurley MJ, Rebolledo CM, Snape M, Altimiras FJ, Farías L, Pino M, Biekofsky R, Glass L, Cogram P. Retracted: Nrf2: a novel therapeutic target in fragile X syndrome is modulated by NNZ2566. Genes, Brain and Behavior 2017; 16:739. [DOI: 10.1111/gbb.12373] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R. M. J. Deacon
- Biomedicine Division, Centre for Systems Biotechnology; Fraunhofer Research Foundation; Santiago Chile
- Gen.DDI Ltd; London UK
- Laboratory of Molecular Neuropsychiatry, Institute of Cognitive and Translational Neuroscience (INCyT); INECO Foundation, Favaloro University, National Scientific and Technical Research Council; Buenos Aires Argentina
| | - M. J. Hurley
- Laboratory of Molecular Neuropsychiatry, Institute of Cognitive and Translational Neuroscience (INCyT); INECO Foundation, Favaloro University, National Scientific and Technical Research Council; Buenos Aires Argentina
- Division of Brain Sciences, Centre for Neuroinflammation and Neurodegeneration; Imperial College; London UK
| | | | - M. Snape
- AMO Pharmaceuticals Ltd; Huntingdon UK
| | - F. J. Altimiras
- Biomedicine Division, Centre for Systems Biotechnology; Fraunhofer Research Foundation; Santiago Chile
- Facultad de Ingeniería y Ciencias; Universidad Adolfo Ibañez; Santiago Chile
| | - L. Farías
- Biomedicine Division, Centre for Systems Biotechnology; Fraunhofer Research Foundation; Santiago Chile
- Facultad de Ingeniería y Ciencias; Universidad Adolfo Ibañez; Santiago Chile
| | - M. Pino
- Biomedicine Division, Centre for Systems Biotechnology; Fraunhofer Research Foundation; Santiago Chile
| | | | - L. Glass
- Neuren Pharmaceuticals; Bethesda MD USA
| | - P. Cogram
- Biomedicine Division, Centre for Systems Biotechnology; Fraunhofer Research Foundation; Santiago Chile
- Laboratory of Molecular Neuropsychiatry, Institute of Cognitive and Translational Neuroscience (INCyT); INECO Foundation, Favaloro University, National Scientific and Technical Research Council; Buenos Aires Argentina
- Institute Of Ecology and Biodiversity (IEB), Faculty of Science, University of Chile; Santiago Chile
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Caffo M, Minutoli L, Barresi V, Esposito E, Campolo M, Rinaldi M, Pino M, Cardali SM, Caruso G, Germanò A. P12.05 Role of Dkk-3 in the neoplastic progression of meningiomas. Could it represent a new therapeutic target? Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.363] [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: 11/14/2022] Open
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11
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Venencia C, Pino M, Caussa L, Molineu A, Garrigo E. SU-F-T-373: Monte Carlo Versus Pencil Beam Dose Calculation for Spine SBRT Treatments Using HybridARC and Sliding Windows IMRT. Med Phys 2016. [DOI: 10.1118/1.4956558] [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: 11/07/2022] Open
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12
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Pino M, Tsvelik AM, Ioffe LB. Unpaired Majorana Modes in Josephson-Junction Arrays with Gapless Bulk Excitations. Phys Rev Lett 2015; 115:197001. [PMID: 26588406 DOI: 10.1103/physrevlett.115.197001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Indexed: 06/05/2023]
Abstract
The search for Majorana bound states in solid-state physics has been limited to materials that display a gap in their bulk spectrum. We show that such unpaired states appear in certain quasi-one-dimensional Josephson-junction arrays with gapless bulk excitations. The bulk modes mediate a coupling between Majorana bound states via the Ruderman-Kittel-Yosida-Kasuya mechanism. As a consequence, the lowest energy doublet acquires a finite energy difference. For a realistic set of parameters this energy splitting remains much smaller than the energy of the bulk eigenstates even for short chains of length L∼10.
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Affiliation(s)
- M Pino
- Department of Physics and Astronomy, Rutgers The State University of New Jersey, 136 Frelinghuysen road, Piscataway, New Jersey 08854, USA
| | - A M Tsvelik
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - L B Ioffe
- Department of Physics and Astronomy, Rutgers The State University of New Jersey, 136 Frelinghuysen road, Piscataway, New Jersey 08854, USA
- CNRS, UMR 7589, LPTHE, F-75005 Paris, France
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13
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Somoza AM, Ortuño M, Gasparian V, Pino M. Green functions of interacting systems in the strongly localized regime. J Phys Condens Matter 2015; 27:335503. [PMID: 26235315 DOI: 10.1088/0953-8984/27/33/335503] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We have developed an approach to calculate the single-particle Green function of a one-dimensional many-body system in the strongly localized limit at zero temperature. Our approach sums the contributions of all possible forward scattering paths in configuration space. We demonstrate that for fermions and nearest neighbors interactions the Green function factorizes at every link connecting two sites with the same occupation. As a consequence, the conductance distribution function for interacting systems is log-normal, in the same universality class as non-interacting systems. We have developed a numerical procedure to calculate the ground state and the Green function, generating all possible paths in configuration space. Our results agree with results obtained by exact diagonalization of small systems in the limit of large disorder.
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Affiliation(s)
- A M Somoza
- Departamento de Física-CIOyN, Universidad de Murcia, Murcia 30.071, Spain
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14
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Martin-Rodriguez S, Reverter JC, Tàssies D, Espinosa G, Heras M, Pino M, Escolar G, Diaz-Ricart M. Reduced ADAMTS13 activity is associated with thrombotic risk in systemic lupus erythematosus. Lupus 2015; 24:1143-9. [PMID: 25824235 DOI: 10.1177/0961203315579091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 03/03/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND Severe deficiency of ADAMTS13 activity leads to von Willebrand factor (VWF) ultralarge multimers with high affinity for platelets, causing thrombotic thrombocytopenic purpura. Other pathological conditions with moderate ADAMTS13 activity exhibit a thrombotic risk. We examined the ADAMTS13 activity in systemic lupus erythematosus (SLE) and its value as a thrombotic biomarker. METHODS ADAMTS13 activity, VWF antigen and multimeric structure, and vascular cell adhesion molecule 1 (VCAM-1) were measured in plasma samples from 50 SLE patients and 50 healthy donors. Disease activity (systemic lupus erythematosus disease activity index; SLEDAI) and organ damage (systemic lupus international collaborating clinics) scores, thrombotic events, antiphospholipid syndrome (APS) and antiphospholipid antibodies (aPLs) were registered. RESULTS SLE patients showed decreased ADAMTS13 activity and high VWF levels compared with controls (66 ± 27% vs. 101 ± 8%, P < 0.01, and 325 ± 151% vs. 81 ± 14%, P < 0.001). VCAM-1 levels were higher in SLE patients (P < 0.05). Considering three groups of SLE patients depending on ADAMTS13 activity (>60%, 60-40% and <40%), comparative analysis showed significant association between ADAMTS13 activity and SLEDAI (P < 0.05), presence of aPLs (P < 0.001), APS (P < 0.01) and thrombotic events (P < 0.01). Reduced ADAMTS13 activity together with increased VWF levels were especially notable in patients with active disease and with aPLs. CONCLUSION ADAMTS13 activity, in combination with other laboratory parameters, could constitute a potential prognostic biomarker of thrombotic risk in SLE.
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Affiliation(s)
| | | | | | | | - M Heras
- Cardiology Department. Institut Clinic del Torax. Institut d Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - M Pino
- Hemotherapy-Hemostasis Department
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Tundidor-Camba A, Terraza CA, Tagle LH, Coll D, Ojeda I, Pino M. Synthesis and characterization of aromatic poly(amides) based on 3,5-diamino-N-cyclopropylbenzamide. RSC Adv 2015. [DOI: 10.1039/c4ra16859c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three aromatic poly(amides) (PAs) were prepared, one of them containing a dimethyldiphenylsilane unit from a new aromatic diamine monomer with a bulky pendant polar group.
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Affiliation(s)
- A. Tundidor-Camba
- Organic Chemistry Department
- Faculty of Chemistry
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - C. A. Terraza
- Organic Chemistry Department
- Faculty of Chemistry
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - L. H. Tagle
- Organic Chemistry Department
- Faculty of Chemistry
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - D. Coll
- Organic Chemistry Department
- Faculty of Chemistry
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - I. Ojeda
- Organic Chemistry Department
- Faculty of Chemistry
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - M. Pino
- Physicochemical Department
- Faculty of Chemistry
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
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Caffo M, Barresi V, Pino M, Caruso G, Tomasello F. P08.06 * CEREBRAL DURAL METASTASES MIMICKING MENINGIOMAS. DIAGNOSTIC AND SURGICAL FEATURES. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.194] [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: 11/13/2022] Open
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17
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Caffo M, Campenni A, Caruso G, Barresi V, Pino M, Baldari S, Tomasello F. P17.13 * ABSCESUALIZED GLIOMAS: PREDICTIVE VALUE OF 99MTC-LEUKOSCAN. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.343] [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: 11/13/2022] Open
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18
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Wrobel J, Pino M, Wargnier P, Rigaud AS. Robots et agents virtuels au service des personnes âgées : une revue de l’actualité en gérontechnologie. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.npg.2014.02.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Granata C, Pino M, Legouverneur G, Vidal JS, Bidaud P, Rigaud AS. Robot services for elderly with cognitive impairment: testing usability of graphical user interfaces. Technol Health Care 2014; 21:217-31. [PMID: 23792795 DOI: 10.3233/thc-130718] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Socially assistive robotics for elderly care is a growing field. However, although robotics has the potential to support elderly in daily tasks by offering specific services, the development of usable interfaces is still a challenge. Since several factors such as age or disease-related changes in perceptual or cognitive abilities and familiarity with computer technologies influence technology use they must be considered when designing interfaces for these users. OBJECTIVE This paper presents findings from usability testing of two different services provided by a social assistive robot intended for elderly with cognitive impairment: a grocery shopping list and an agenda application. The main goal of this study is to identify the usability problems of the robot interface for target end-users as well as to isolate the human factors that affect the use of the technology by elderly. METHODS Socio-demographic characteristics and computer experience were examined as factors that could have an influence on task performance. A group of 11 elderly persons with Mild Cognitive Impairment and a group of 11 cognitively healthy elderly individuals took part in this study. Performance measures (task completion time and number of errors) were collected. RESULTS Cognitive profile, age and computer experience were found to impact task performance. Participants with cognitive impairment achieved the tasks committing more errors than cognitively healthy elderly. Instead younger participants and those with previous computer experience were faster at completing the tasks confirming previous findings in the literature. CONCLUSIONS The overall results suggested that interfaces and contents of the services assessed were usable by older adults with cognitive impairment. However, some usability problems were identified and should be addressed to better meet the needs and capacities of target end-users.
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Affiliation(s)
- C Granata
- ISIR - Institut des Systèmes Intelligents et de Robotique, UPMC-CNRS UMR, 75005 Paris, France.
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20
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Hodar C, Zuñiga A, Pulgar R, Travisany D, Chacon C, Pino M, Maass A, Cambiazo V. Comparative gene expression analysis of Dtg, a novel target gene of Dpp signaling pathway in the early Drosophila melanogaster embryo. Gene 2013; 535:210-7. [PMID: 24321690 DOI: 10.1016/j.gene.2013.11.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 10/30/2013] [Accepted: 11/14/2013] [Indexed: 10/25/2022]
Abstract
In the early Drosophila melanogaster embryo, Dpp, a secreted molecule that belongs to the TGF-β superfamily of growth factors, activates a set of downstream genes to subdivide the dorsal region into amnioserosa and dorsal epidermis. Here, we examined the expression pattern and transcriptional regulation of Dtg, a new target gene of Dpp signaling pathway that is required for proper amnioserosa differentiation. We showed that the expression of Dtg was controlled by Dpp and characterized a 524-bp enhancer that mediated expression in the dorsal midline, as well as, in the differentiated amnioserosa in transgenic reporter embryos. This enhancer contained a highly conserved region of 48-bp in which bioinformatic predictions and in vitro assays identified three Mad binding motifs. Mutational analysis revealed that these three motifs were necessary for proper expression of a reporter gene in transgenic embryos, suggesting that short and highly conserved genomic sequences may be indicative of functional regulatory regions in D. melanogaster genes. Dtg orthologs were not detected in basal lineages of Dipterans, which unlike D. melanogaster develop two extra-embryonic membranes, amnion and serosa, nevertheless Dtg orthologs were identified in the transcriptome of Musca domestica, in which dorsal ectoderm patterning leads to the formation of a single extra-embryonic membrane. These results suggest that Dtg was recruited as a new component of the network that controls dorsal ectoderm patterning in the lineage leading to higher Cyclorrhaphan flies, such as D. melanogaster and M. domestica.
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Affiliation(s)
- Christian Hodar
- Laboratorio de Bioinformática y Expresión Génica, INTA-Universidad de Chile, El Líbano 5524, Santiago, Chile; Fondap Center for Genome Regulation (CGR), Universidad de Chile, Santiago, Chile
| | - Alejandro Zuñiga
- Laboratorio de Bioinformática y Expresión Génica, INTA-Universidad de Chile, El Líbano 5524, Santiago, Chile; Fondap Center for Genome Regulation (CGR), Universidad de Chile, Santiago, Chile
| | - Rodrigo Pulgar
- Laboratorio de Bioinformática y Expresión Génica, INTA-Universidad de Chile, El Líbano 5524, Santiago, Chile; Fondap Center for Genome Regulation (CGR), Universidad de Chile, Santiago, Chile
| | - Dante Travisany
- Laboratorio de Bioinformática y Matemática del Genoma, Center for Mathematical Modeling, FCFM-Universidad de Chile, Santiago, Chile; Fondap Center for Genome Regulation (CGR), Universidad de Chile, Santiago, Chile
| | - Carlos Chacon
- Laboratorio de Bioinformática y Expresión Génica, INTA-Universidad de Chile, El Líbano 5524, Santiago, Chile
| | - Michael Pino
- Laboratorio de Bioinformática y Expresión Génica, INTA-Universidad de Chile, El Líbano 5524, Santiago, Chile
| | - Alejandro Maass
- Laboratorio de Bioinformática y Matemática del Genoma, Center for Mathematical Modeling, FCFM-Universidad de Chile, Santiago, Chile; Fondap Center for Genome Regulation (CGR), Universidad de Chile, Santiago, Chile; Department of Mathematical Engineering, FCFM-Universidad de Chile, Santiago, Chile
| | - Verónica Cambiazo
- Laboratorio de Bioinformática y Expresión Génica, INTA-Universidad de Chile, El Líbano 5524, Santiago, Chile; Fondap Center for Genome Regulation (CGR), Universidad de Chile, Santiago, Chile.
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Lezmi S, Rokh N, Saint-Macary G, Pino M, Sallez V, Thevenard F, Roome N, Rosolen S. Chloroquine causes similar electroretinogram modifications, neuronal phospholipidosis and marked impairment of synaptic vesicle transport in albino and pigmented rats. Toxicology 2013; 308:50-9. [PMID: 23567313 DOI: 10.1016/j.tox.2013.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 02/28/2013] [Accepted: 03/25/2013] [Indexed: 01/07/2023]
Abstract
Retinal toxicity of chloroquine has been known for several years, but the mechanism(s) of toxicity remain controversial; some author support the idea that the binding of chloroquine to melanin pigments in the retinal pigmented epithelium (RPE) play a major toxic role by concentrating the drug in the eye. In our study, 12 albinos Sprague-Dawley (SD) and 12 pigmented Brown Norway (BN) rats were treated orally for 3 months with chloroquine to compare functional and pathological findings. On Flash electroretinograms (ERG) performed in scotopic conditions, similar and progressive (time-dependent) delayed onset and decreased amplitudes of oscillatory potentials (from Day 71) and b-waves (on Day 92) were identified in both BN and SD rats. In both strains, identical morphological changes consisted of neuronal phospholipidosis associated with UV auto-fluorescence without evidence of retinal degeneration and gliosis; the RPE did not show any morphological lesions or autofluorescence. IHC analyses demonstrated a decrease in GABA expression in the inner nuclear layer. In addition, a marked accumulation of synaptic vesicles coupled with a marked disruption of neurofilaments in the optic nerve fibers was identified. In conclusion, ERG observations were very similar to those described in humans. Comparable ERG modifications, histopathology and immunohistochemistry findings were observed in the retina of both rat strains suggesting that melanin pigment is unlikely involved. chloroquine-induced impairment of synaptic vesicle transport, likely related to disruption of neurofilaments was identified and non-previously reported. This new mechanism of toxicity may also be responsible for the burry vision described in humans chronically treated with chloroquine.
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Affiliation(s)
- Stéphane Lezmi
- Covance (Foremely Sanofi R&D), Toxicology Services, 2-8 route de Rouen, ZI de Limay Porcheville, 78440 Porcheville, France.
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22
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Dhouib MA, Bougueroua L, Istrate D, Pino M, Bernard C. HoCoS: Home Companion Software. A service oriented solution for elderly home accompanying and remote healthcare monitoring. Annu Int Conf IEEE Eng Med Biol Soc 2012; 2011:5343-6. [PMID: 22255545 DOI: 10.1109/iembs.2011.6091322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The age of the population in all societies around the world is increasing. Elderly people prefer to maintain their independence, their autonomy and live at home as long as possible. We propose as a solution to this issue a Home Companion Software baptized HoCoS. This solution aims to help the elderly with daily life by providing an ergonomic and familiar interface. The second purpose is to integrate transparent remote healthcare monitoring service that ensures elderly security without disturbing the ergonomics of the application. We present service oriented architecture that offers extensibility and interoperability between heterogonous systems in order to combine several technologies and operators. We carried out ergonomic tests on this solution to evaluate its comfort and ease of use.
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Affiliation(s)
- M A Dhouib
- ESIGETEL School, 1 Rue du port de Valvin, 77210 Fontainebleau-Avon, France.
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23
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Hoppenot P, Pino M, Rigaud AS, Ozguler A, Dubey G, Cornet G. Projet QuoVADis: aide à distance à la vie quotidienne pour des personnes atteintes de troubles cognitifs. Ing Rech Biomed 2011. [DOI: 10.1016/j.irbm.2011.01.036] [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: 11/25/2022]
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24
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Lezmi S, Thibault-Duprey K, Bidaut A, Hardy P, Pino M, Macary GS, Barbellion S, Brunel P, Dorchies O, Clifford C, Leconte I. Spontaneous Metritis Related to the Presence of Vaginal Septum in Pregnant Sprague Dawley Crl:CD(SD) Rats. Vet Pathol 2010; 48:964-9. [DOI: 10.1177/0300985810391113] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [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
Recently, 6% of 1,176 Sprague Dawley rats examined in our reproductive toxicity studies presented with dark-red uterine contents with or without fetuses demonstrating delayed development. Sometimes, a high proportion of the litter was found dead, and dystocia with death or preterminal euthanasia of the dam occurred. Microscopic findings in the uterus consisted of necrohemorrhagic and suppurative periplacentitis associated with the presence of bacterial colonies identified as Escherichia coli. In the vagina, similar findings were observed that were associated with mucus accumulation and the presence of a transverse occlusive or partially occlusive thin membrane identified as a vaginal septum. Microscopically, this septum consisted of a thin band of connective tissue covered on both sides by a mucous epithelium that was continuous with vaginal epithelium. In some cases, there was only mucus accumulation retained by a septum in the vagina without evidence of bacterial infection. Serological and histological examinations did not reveal any specific pathogenic agent. The presence of these septa in the vagina most likely favored mucus accumulation, nonspecific ascending bacterial infection, and dystocia. This colony of rats presented with an unusually high incidence of vaginal septa as it was described in different strains of mice and rats in the past. We hypothesized that the use of an impedance meter by the breeder—to determine the phase of the estrous cycle by introducing a probe in the vagina—likely facilitated gestation by perforating the vaginal septum in some cases.
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Affiliation(s)
- S. Lezmi
- sanofi-aventis R&D, Drug Safety Evaluation, Porcheville, France
| | - K. Thibault-Duprey
- sanofi-aventis R&D, Drug Safety Evaluation & Laboratory Animal Science and Welfare, 94140 Alfortville, France
| | - A. Bidaut
- sanofi-aventis R&D, Drug Safety Evaluation & Laboratory Animal Science and Welfare, 94140 Alfortville, France
| | - P. Hardy
- sanofi-aventis R&D, Drug Safety Evaluation & Laboratory Animal Science and Welfare, 94140 Alfortville, France
| | - M. Pino
- sanofi-aventis R&D, Drug Safety Evaluation & Laboratory Animal Science and Welfare, 94140 Alfortville, France
| | - G. Saint Macary
- sanofi-aventis R&D, Drug Safety Evaluation, Porcheville, France
| | - S. Barbellion
- sanofi-aventis R&D, Drug Safety Evaluation & Laboratory Animal Science and Welfare, 94140 Alfortville, France
| | - P. Brunel
- sanofi-aventis R&D, Drug Safety Evaluation & Laboratory Animal Science and Welfare, 94140 Alfortville, France
| | - O. Dorchies
- sanofi-aventis R&D, Drug Safety Evaluation & Laboratory Animal Science and Welfare, 94140 Alfortville, France
| | - C. Clifford
- Charles River Laboratories, Wilmington, MA, USA
| | - I. Leconte
- sanofi-aventis R&D, Drug Safety Evaluation, Porcheville, France
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25
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Renne R, Brix A, Harkema J, Herbert R, Kittel B, Lewis D, March T, Nagano K, Pino M, Rittinghausen S, Rosenbruch M, Tellier P, Wohrmann T. Proliferative and nonproliferative lesions of the rat and mouse respiratory tract. Toxicol Pathol 2010; 37:5S-73S. [PMID: 20032296 DOI: 10.1177/0192623309353423] [Citation(s) in RCA: 186] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The INHAND Project (International Harmonization of Nomenclature and Diagnostic Criteria for Lesions in Rats and Mice) is a joint initiative of the Societies of Toxicologic Pathology from Europe (ESTP), Great Britain (BSTP), Japan (JSTP) and North America (STP) to develop an internationally-accepted nomenclature for proliferative and non-proliferative lesions in laboratory animals. The purpose of this publication is to provide a standardized nomenclature for classifying microscopic lesions observed in the respiratory tract of laboratory rats and mice, with color photomicrographs illustrating examples of some lesions. The standardized nomenclature presented in this document is also available electronically on the internet (http://www.goreni.org/). Sources of material included histopathology databases from government, academia, and industrial laboratories throughout the world. Content includes spontaneous developmental and aging lesions as well as lesions induced by exposure to test materials. A widely accepted and utilized international harmonization of nomenclature for respiratory tract lesions in laboratory animals will decrease confusion among regulatory and scientific research organizations in different countries and provide a common language to increase and enrich international exchanges of information among toxicologists and pathologists.
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Affiliation(s)
- Roger Renne
- Roger Renne ToxPath Consulting, Sumner, Washington, USA
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26
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Kaufmann W, Bader R, Ernst H, Harada T, Hardisty J, Kittel B, Kolling A, Pino M, Renne R, Rittinghausen S, Schulte A, Wöhrmann T, Rosenbruch M. 1st International ESTP Expert Workshop: “Larynx squamous metaplasia”. A re-consideration of morphology and diagnostic approaches in rodent studies and its relevance for human risk assessment. ACTA ACUST UNITED AC 2009; 61:591-603. [DOI: 10.1016/j.etp.2009.01.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Accepted: 01/07/2009] [Indexed: 11/16/2022]
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27
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Pino M, Galleguillos C, Torres M, Sovino H, Fuentes A, Boric MA, Johnson MC. Association between MMP1 and MMP9 activities and ICAM1 cleavage induced by tumor necrosis factor in stromal cell cultures from eutopic endometria of women with endometriosis. Reproduction 2009; 138:837-47. [PMID: 19661147 DOI: 10.1530/rep-09-0196] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Endometriosis is a benign gynecological pathology in which immune system deregulation may play a role in its initiation and progression. In endometriotic lesions, intercellular adhesion molecule-1 (ICAM1) is released from the cell membrane by proteolytic cleavage of its extracellular domain, a process that coincides with increased expression and proteolytic activity of metalloproteinases such as MMP1 and MMP9. The objective of our study was to investigate the association between MMP1 and MMP9 activities and ICAM1 cleavage mediated by tumor necrosis factor (TNF) in eutopic endometrial stromal cells from women with and without (control) endometriosis during culture. The RNA was evaluated by RT-PCR, and the protein was determined by western blot (ICAM1, MMP1), casein or gelatin zymographies (secreted active MMP1 or MMP9 respectively), ELISA (soluble ICAM1 (sICAM1)), and fluorescence assay (secreted active MMP1). Under basal conditions, proMMP9 dimer and MMP9 were higher in endometriosis cell cultures. In stromal cultures derived from control women and those with endometriosis, TNF augmented the intracellular proMMP1 (1.2-fold in control stromal cells) and ICAM1 (1.4- and 1.9-fold), greatly increased MMP1 and proMMP9 levels, and the sICAM1 concentration (2.3- and 4.3-fold) in their media compared with basal levels. The combination of TNF and MMP9 increased the sICAM1 concentration 14-fold in the endometriosis cell media, whereas GM6001 inhibited the stimulatory effect of TNF in both cell cultures. The deregulation of MMP9, and the TNF participation in the MMP1 and proMMP9 secretions, in the MMP9 expression and in the expression and cleavage of ICAM1 may contribute to the pathophysiology of this disease.
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Affiliation(s)
- M Pino
- Institute of Maternal and Child Research, Faculty of Medicine, University of Chile, Santiago, Chile
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28
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Sambola A, Heras M, Escolar G, Lozano M, Pino M, Martorell T, Torra M, Sanz G. The PFA-100® detects sub-optimal antiplatelet responses in patients on aspirin. Platelets 2009; 15:439-46. [PMID: 15745315 DOI: 10.1080/69537100412351272550] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [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: 10/26/2022]
Abstract
Although it is suspected that some patients with acute coronary syndromes (ACS) could have a sub-optimal response to aspirin (SASAR), currently a fixed dose of ASA is long-term used in all individuals. This study was designed to determine SASAR and whether a SASAR is a predictor for recurrence of ischemic events in patients on low-dose ASA with a previous ACS. One hundred patients taking ASA 100 mg/day were assessed at 1 and 6 months after a first ACS. SASAR was initially defined as a failure of the ASA treatment to significantly prolong the closure time in the Platelet Function Analyzer (PFA-100). SASAR in these samples was reconfirmed by conventional aggregometry. TXB2 levels were determined in plasma. At one month 49 patients showed SASAR in the PFA-100; only 25 of them showed SASAR by conventional aggregometry. At six months, 39 of 81 patients showed SASAR by PFA-100, but conventional aggregometry detected SASAR in only 12 of the 39 patients. TXB2 levels were significantly higher in patients with SASAR. Five patients with SASAR, by both tests, died during follow-up (p = 0.013). The PFA-100 detected a high rate of SASAR in patients with ACS. This instrument could be used to screen for suboptimal response to the antiplatelet action of ASA. Whether persistence of SASAR could relate to a higher risk of recurrence and how adjusting the dose of ASA could reduce the rate of SASAR are issues that deserve further investigations.
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Affiliation(s)
- A Sambola
- Cardiovascular Institute, University of Barcelona, Spain
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29
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Pino M, Stingelin N, Tanner K. Nucleation and growth of apatite on NaOH-treated PEEK, HDPE and UHMWPE for artificial cornea materials. Acta Biomater 2008; 4:1827-36. [PMID: 18599372 DOI: 10.1016/j.actbio.2008.05.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Revised: 04/07/2008] [Accepted: 05/09/2008] [Indexed: 10/22/2022]
Abstract
The skirt of an artificial cornea must integrate the implant to the host sclera, a major failure of present devices. Thus, it is highly desirable to encourage the metabolic activity of the cornea by using more bioactive, flexible skirt materials. Here we describe attempts to increase the bioactivity of polyether ether ketone (PEEK), high-density polyethylene (HDPE) and ultra-high molecular weight polyethylene (UHMWPE) films. The effectiveness of different strength NaOH pre-treatments to initiate apatite deposition on PEEK, HDPE and UHMWPE is investigated. We find that exposure of PEEK, HDPE and UHMWPE films to NaOH solutions induces the formation of potential nuclei for apatite (calcium phosphate), from which the growth of an apatite coating is stimulated when subsequently immersing the polymer films in 1.5 strength Simulated Body Fluid (SBF). As immersion time in SBF increases, further nucleation and growth produces a thicker and more compact apatite coating that can be expected to be highly bioactive. Interestingly, the apatite growth is found to also be dependent on both the concentration of NaOH solution and the structure of the polymer surface.
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Abstract
The identification of human artifacts at the early archaeological site of Monte Verde in southern Chile has raised questions of when and how people reached the tip of South America without leaving much other evidence in the New World. Remains of nine species of marine algae were recovered from hearths and other features at Monte Verde II, an upper occupational layer, and were directly dated between 14,220 and 13,980 calendar years before the present ( approximately 12,310 and 12,290 carbon-14 years ago). These findings support the archaeological interpretation of the site and indicate that the site's inhabitants used seaweed from distant beaches and estuarine environments for food and medicine. These data are consistent with the ideas that an early settlement of South America was along the Pacific coast and that seaweeds were important to the diet and health of early humans in the Americas.
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Affiliation(s)
- Tom D Dillehay
- Department of Anthropology, Vanderbilt University, Nashville, TN 37265, USA.
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Tonda R, Lopez-Vilchez I, Navalon F, Pino M, Hernandez MR, Escolar G, Galan AM. Platelets interact with tissue factor immobilized on surfaces: effects of shear rate. Eur J Clin Invest 2008; 38:34-42. [PMID: 18173549 DOI: 10.1111/j.1365-2362.2007.01899.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 01/02/2023]
Abstract
BACKGROUND While procoagulant activities of Tissue Factor (TF) have been widely investigated, its possible pro-adhesive properties towards platelets have not been studied in detail. MATERIAL AND METHODS We explored the interaction of platelets with human Tissue Factor (hTF) firmly adsorbed on a synthetic surface of polyvinilidene difluoride (PVDF) using different shear rates. For studies at 250 and 600 s(-1), TF firmly adsorbed was exposed to flowing anticoagulated blood in flat perfusion devices. Deposition of platelets and fibrin were evaluated by morphometric, immunocytochemical and ultrastructural methods. Prothrombin fragment 1 + 2 (F1 + 2) levels were also measured. Experiments at 5000 s(-1), were performed on the Platelet Function Analyzer (PFA-100) with experimental cartridges with collagen (COL) or collagen-hTF (COL + TF). Haemostatic effect of recombinant activated FVIIa (rFVIIa) was assessed in the same experimental settings. RESULTS Platelet deposition on hTF reached 19.8 +/- 1.3% and 26.1 +/- 3.4% of the total surface, at 250 and 600 s(-1), respectively. Fibrin formation was significantly higher at 250 s(-1) than at 600 s(-1) (P < 0.05). The addition of rFVIIa did not influence platelet deposition but raised fibrin formation and thrombin generation at both shear rates (P < 0.05). At 5000 s(-1), closure times (CT) in the PFA-100 were significantly shortened in the presence of hTF (154.09 +/- 14.69 s vs. 191.45 +/- 16.09 s COL alone; P < 0.05). Addition of rFVIIa did not cause a further reduction of CT. CONCLUSIONS Our studies demonstrate that hTF is an adhesive substrate for platelets and suggest that the von Willebrand factor could mediate these interactions. At low and intermediate shear rates, rFVIIa enhanced the procoagulant action of hTF, but this effect was not observed at very high shear rates.
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Affiliation(s)
- R Tonda
- Service of Hemotherapy-Hemostasis, Hospital Clinic, CDB, IDIBAPS, UB, Barcelona, Spain
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Bermejo-Martin JF, Bernardo D, Dominguez-Gil M, Alonso A, Garcia-Arevalo MC, Pino M, de Lejarazu RO, Eiros JM, Ardura J, León AJ, Garrote JA, Resino S, Blanco-Quiros A, Muñoz-Fernández MA, Arranz E. Interleukin (IL)-1beta, IL-6 and IL-8 in nasal secretions: a common role for innate immunity in viral bronchial infection in infants? Br J Biomed Sci 2007; 63:173-5. [PMID: 17201207 DOI: 10.1080/09674845.2006.11978093] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J F Bermejo-Martin
- Mucosal Immunity Laboratory, Pediatrics Department, Institute of Molecular Biology and Genetics HGU Gregorio Marañón, Madrid, Spain.
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McConkey D, Shrader M, Pino M, Adam L, Dinney C. 478 POSTER Gefitinib reverses TRAIL resistance in human bladder cancer cell lines via inhibition of AKT-mediated XIAP expression. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70483-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Zhu K, Pino M, Siefker-Radtke AO, Shalinsky D, Hu-Lowe D, McConkey DJ. AG-013736, a novel VEGF receptor and PDGF receptor inhibitor with potent activity against human bladder carcinoma in vitro and in vivo. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.13109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
13109 The receptors for vascular endothelial growth factor and platelet-derived growth factor (VEGFR-2 and PDGFR) play essential and complementary roles in angiogenesis, and combined inhibition of these receptors may therefore result in potent antitumor activity in vivo. Here we characterized the effects of a small molecule tyrosine kinase inhibitor AG-013736 (Pfizer) in HUVEC and human bladder cancer cells. Previously, AG-013736 was reported to inhibit VEGFRs with picomolar potency and PDGFRs with nanomolar activity. All of the cell lines examined displayed cell surface VEGFR-2 and PDGFR α and β expression as measured by flow cytometry. Low nanomolar concentrations of AG-013736 blocked the HUVEC cell proliferation with inhibition of VEGF receptor 2 and PDGF receptor phosphorylation. AG-013736 caused regression of established subcutaneous human bladder cancer xenografts, effects that were associated with inhibition of VEGFR-2 and PDGFR β phosphorylation but not EGFR phosphorylation and reduction in tumor microvessel densities (MVDs). Our results demonstrate that AG-013736 has substantial anti-angiogenesis activity in preclinical models of human bladder cancer, which warrants further exploration either alone or with the combination of other pre-clinical drugs in bladder cancer treatment. No significant financial relationships to disclose.
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Affiliation(s)
- K. Zhu
- Regina Elena Cancer Institute, Rome, Italy; Pfizer Global Research and Development, San Diego, CA; M. D. Anderson Cancer Center, Houston, TX
| | - M. Pino
- Regina Elena Cancer Institute, Rome, Italy; Pfizer Global Research and Development, San Diego, CA; M. D. Anderson Cancer Center, Houston, TX
| | - A. O. Siefker-Radtke
- Regina Elena Cancer Institute, Rome, Italy; Pfizer Global Research and Development, San Diego, CA; M. D. Anderson Cancer Center, Houston, TX
| | - D. Shalinsky
- Regina Elena Cancer Institute, Rome, Italy; Pfizer Global Research and Development, San Diego, CA; M. D. Anderson Cancer Center, Houston, TX
| | - D. Hu-Lowe
- Regina Elena Cancer Institute, Rome, Italy; Pfizer Global Research and Development, San Diego, CA; M. D. Anderson Cancer Center, Houston, TX
| | - D. J. McConkey
- Regina Elena Cancer Institute, Rome, Italy; Pfizer Global Research and Development, San Diego, CA; M. D. Anderson Cancer Center, Houston, TX
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Gelibter A, Milella M, Malaguti P, De Marco S, Ruggeri E, Carlini P, Pino M, Nuzzo C, Sternberg CN, Cognetti F. Pilot study of capecitabine combined with celecoxib (CapCel) as second-line treatment for advanced pancreatic (P) and biliary tree (BT) cancer. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.14055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
14055 Background: COX-2 is overexpressed during cancer progression in several solid tumors, including P and BT, and constitutes an attractive therapeutic target. Selective COX-2 inhibitors, such as celecoxib, have been successfully combined with fluoropyrimidine-based regimens, resulting in a lower-than-expected hematologic, GI, and skin toxicity rate. Methods: Advanced P or BT patients (pts), progressing after first-line treatment, were eligible for the study. Capecitabine was administered at 1000 mg/m2 b.i.d. on days 1–14 q3 weeks; celecoxib was administered at 200 mg b.i.d. continuously starting on day 1. PFS was the primary endpoint. ORR, toxicity, OS, clinical benefit (CB), and QoL were secondary endpoints. Assuming that a rate of PFS >15% at 3 mos would be considered of interest in this pt population, an accrual of 28 pts was planned according to the exact single-stage phase II design described by A’Herne. Results: To date, 25 pts have been accrued (M/F: 11/14; median age: 64 yrs, range 39–75; P/BT: 18/7; PS 0–1/2–3: 19/6). All pts completed at least 1 treatment cycle (median: 3, range 1–9). Twenty-three pts are currently evaluable for response: 1 PR and 1 MR (duration: 33 and 27+ wks) were observed, both in pts with P; 5 additional pts showed SD (duration: 10+, 21, 22+, 27, and 42 wks); the remaining 16 pts had PD. All pts and 83 cycles are evaluable for toxicity. Hematological toxicity was negligible; only 4 pts experienced G3 non-hematological toxicities: diarrhea (2 pts, 2 cycles), skin toxicity (1 pt, resolved with treatment delay), asthenia (1 pt, 2 cycles), and GI bleeding (1 pt, requiring treatment interruption after cycle 1). To date, 19 pts have progressed and 15 pts have died: median PFS is 11 wks (range 3–42) and median OS is 16 wks (range 4–54). Nineteen pts had elevated CA19.9 serum levels at baseline, which decreased of > 25% during treatment in 7 pts, remained stable in 3 pts, and increased in 9 pts. The evaluation of CB and QoL is ongoing. Conclusions: CapCel is a feasible and well-tolerated, fully oral, treatment regimen for advanced P and BT patients, which shows activity, albeit modest, even in a second-line setting. Further evaluation of this therapeutic strategy is warranted. No significant financial relationships to disclose.
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Affiliation(s)
- A. Gelibter
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
| | - M. Milella
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
| | - P. Malaguti
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
| | - S. De Marco
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
| | - E. Ruggeri
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
| | - P. Carlini
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
| | - M. Pino
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
| | - C. Nuzzo
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
| | - C. N. Sternberg
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
| | - F. Cognetti
- Regina Elena National Cancer Institute, Rome, Italy; S. Camillo-Forlanini Hospital, Rome, Italy
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Ferretti G, Felici A, Pino M, Carlini P, Fabi A, Nuzzo C, Sperduti I, Cognetti F, Papaldo P. Incidence of brain metastases after first line chemotherapy in breast cancer patients treated with or without trastuzumab. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.10582] [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: 11/20/2022] Open
Abstract
10582 Background: Brain metastases during trastuzumab therapy have been frequently observed. Only a few studies have compared the risk of brain metastases in patients (pts) treated with or without trastuzumab. Methods: In our hospital, between Jun 2000 and September 2005, we conducted a retrospective study in 72 metastatic breast cancer pts treated with first-line mono-chemotherapy (CT) with paclitaxel or docetaxel or vinorelbine ± Trastuzumab (T). Results: Thirty-five pts with HER2 pos disease were treated with T associated with 1st line CT, while 37 pts (16 with HER2 positive tumor, 21 HER2 negative) were not treated with T (NT). Ten HER2 pos NT pts subsequently received T. The median follow-up was 21 months (range1–129); the median age was 54 (range 32–82); the median treatment duration was 5 months (range 1–29). The incidence of recurrence (R), progressive disease in brain (BR), progression free survival (PFS) after first line CT, and overall survival (OS) were reported below: (see Table) Conclusions: This study showed that, after first line chemotherapy, the use of T did not affect the incidence of BR in HER2 pos metastatic breast cancer pts. On the other hand, Her-2 neg seems to predict ‘per se‘ a lower incidence of cerebral spread of disease. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
| | - A. Felici
- Regina Elena Cancer Institute, Roma, Italy
| | - M. Pino
- Regina Elena Cancer Institute, Roma, Italy
| | - P. Carlini
- Regina Elena Cancer Institute, Roma, Italy
| | - A. Fabi
- Regina Elena Cancer Institute, Roma, Italy
| | - C. Nuzzo
- Regina Elena Cancer Institute, Roma, Italy
| | | | | | - P. Papaldo
- Regina Elena Cancer Institute, Roma, Italy
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Bria E, Carlini P, Gelibter A, Ruggeri E, Ceribelli A, Pino M, Terzoli E, Cognetti F, Giannarelli D, Milella M. Current status of targeted agents in advanced pancreatic cancer (APC): A pooled analysis of 2,361 patients (pts) enrolled in six phase III trials. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.4126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4126 Background: Molecular targeting of pathways that are deregulated in pancreatic cancer is a promising approach aimed at improving the dismal prognosis of APC pts. However, the clinical impact of novel “biological” drugs (ND) remains to be defined. Methods: All prospective phase III trials comparing single-agent Gemcitabine (G) with either a ND or a combination of ND and G (ND+G) were considered eligible. A pooled analysis was performed and event-based relative risk ratios (RR) with 95% CI were derived through both a fixed- and a random-effect model approach, exploring OS as the primary outcome and PFS and ORR as secondary outcomes. Heterogeneity between different trials was also taken into account. Results: Six trials involving 2361 pts were identified; ND tested included: FTI inhibitors (1 trial), MMP inhibitors (3 trials), EGFR inhibitors (1 trial), and anti-gastrin vaccine (1 trial). The analysis was conducted considering three different subgroups: 1) overall population (2361 patients, 6 trials), 2) ND+G vs G (1879 patients, 4 trials), and 3) ND vs G (482 patients, 2 trials). As shown in the table, no significant differences in either the primary outcome (OS) or the secondary outcome of PFS were observed in the overall population as well as in ND+G vs G trials, while a significant negative trend for ND was found in ND vs G trials with regard to both endpoints. Conversely the evaluation of the secondary endpoint of ORR significantly favored G in the overall population as well as in ND vs G trials, while a not significant negative trend for ND was observed in ND+G vs G trials. Conclusions: G remains the treatment of choice in APC pts. The ND tested, either alone or combined with G, do not seem to add any benefit over G. A better understanding of pancreatic cancer biology and further clinical evaluation of new agents and is needed to improve prognosis in APC pts. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
- E. Bria
- Regina Elena National Cancer Institute, Rome, Italy
| | - P. Carlini
- Regina Elena National Cancer Institute, Rome, Italy
| | - A. Gelibter
- Regina Elena National Cancer Institute, Rome, Italy
| | - E. Ruggeri
- Regina Elena National Cancer Institute, Rome, Italy
| | - A. Ceribelli
- Regina Elena National Cancer Institute, Rome, Italy
| | - M. Pino
- Regina Elena National Cancer Institute, Rome, Italy
| | - E. Terzoli
- Regina Elena National Cancer Institute, Rome, Italy
| | - F. Cognetti
- Regina Elena National Cancer Institute, Rome, Italy
| | | | - M. Milella
- Regina Elena National Cancer Institute, Rome, Italy
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Milella M, Carlini P, Gelibter A, Ruggeri E, Ceribelli A, Pino M, Terzoli E, Cognetti F, Giannarelli D, Bria E. Gemcitabine-based polychemotherapy for advanced pancreatic cancer (APC): Is it ready for prime time? A pooled analysis of 3,682 patients (pts) enrolled in 12 phase III trials. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.4118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4118 Background: Since the introduction of gemcitabine (G), attempts have been made to develop G-based combination regimens to improve the dismal outcome of APC pts. Results of randomized trials, however, have been conflicting and single-agent G presently remains the standard of care for such pts. Methods: All prospective phase III trials comparing single-agent G with G-based polychemotherapy regimens (poly-G) were considered eligible. A pooled analysis was performed and event-based relative risk ratios (RR) with 95% CI were derived through both a fixed- and a random-effect model approach, exploring OS as the primary outcome and PFS and ORR as secondary outcomes. Heterogeneity between different trials was also taken into account. Results: Twelve trials involving 3682 pts were identified. The analysis was conducted considering three different subgroups: 1) overall population (3682 patients, 12 trials), 2) platinum-containing poly-G (PG) vs G (768 pts, 5 trials), and 3) fluoropyrimidine-containing poly-G (FG) vs G (1640 pts, 4 trials). As shown in the table, no significant differences in the primary outcome (OS) were observed in any of the three groups analyzed. Conversely, a significant advantage for poly-G was evident with regard to both PFS and ORR in the overall population as well as in the PG vs G subgroup, although with some heterogeneity. A heterogeneous non-significant trend towards a better PFS and ORR outcome was also observed in the FG vs G subgroup. Conclusions: Single-agent G remains the treatment of choice in APC pts. However, the addition of platinum compounds to G appears to significantly improve PFS and ORR, possibly justifying the use of platinum-based poly-G in younger and fit patients. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
- M. Milella
- Regina Elena National Cancer Institute, Rome, Italy
| | - P. Carlini
- Regina Elena National Cancer Institute, Rome, Italy
| | - A. Gelibter
- Regina Elena National Cancer Institute, Rome, Italy
| | - E. Ruggeri
- Regina Elena National Cancer Institute, Rome, Italy
| | - A. Ceribelli
- Regina Elena National Cancer Institute, Rome, Italy
| | - M. Pino
- Regina Elena National Cancer Institute, Rome, Italy
| | - E. Terzoli
- Regina Elena National Cancer Institute, Rome, Italy
| | - F. Cognetti
- Regina Elena National Cancer Institute, Rome, Italy
| | | | - E. Bria
- Regina Elena National Cancer Institute, Rome, Italy
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Trogisch S, Simpson MJ, Taub H, Volkmann UG, Pino M, Hansen FY. Atomic force microscopy measurements of topography and friction on dotriacontane films adsorbed on a SiO2 surface. J Chem Phys 2005; 123:154703. [PMID: 16252965 DOI: 10.1063/1.2060707] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report comprehensive atomic force microscopy (AFM) measurements at room temperature of the nanoscale topography and lateral friction on the surface of thin solid films of an intermediate-length normal alkane, dotriacontane (n-C32H66), adsorbed onto a SiO2 surface. Our topographic and frictional images, recorded simultaneously in the contact mode, reveal a multilayer structure in which one to two layers of molecules adsorb adjacent to the SiO2 surface oriented with their long axis parallel to the interface followed by partial layers of molecules oriented perpendicular to the surface. The thicknesses of the parallel and perpendicular layers that we measured with the AFM agree with those inferred from previous x-ray specular reflectivity measurements on similarly prepared samples. We also observe bulk dotriacontane particles and, in contrast with our previous measurements, are able to determine their location. Above a minimum size, the bulk particles are separated from islands of perpendicularly oriented molecules by regions of exposed parallel layers that most likely extend underneath the particles. We find that the lateral friction is sensitive to the molecular orientation in the underlying crystalline film and can be used effectively with topographic measurements to resolve uncertainties in the film structure. We measure the same lateral friction on top of the bulk particles as on the perpendicular layers, a value that is about 2.5 times smaller than on a parallel layer. Scans on top of parallel layers indicate a constant height but reveal domains having different sublevels of friction. We explain this by the domains having different azimuthal orientations of the molecules.
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Affiliation(s)
- S Trogisch
- Department of Physics and Astronomy and University of Missouri Research Reactor, University of Missouri-Columbia, Columbia, Missouri 65211, USA
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Abstract
BACKGROUND The ability of nitrous compounds to donate nitric oxide (NO), an agent with vasodilating and inhibitory effects on platelet function, has been considered a useful pharmacologic strategy for cardiovascular complications. The purpose of this study was to investigate the effects of a new NO donor, LA419, on platelet interaction in an ex vivo model with human blood circulating through collagen-rich surfaces. MATERIALS AND METHODS Platelet adhesive and cohesive function were analyzed by morphometric procedures after perfusion techniques. Treated blood was exposed to thrombogenic surfaces and platelet interactions were morphometrically evaluated. RESULTS All the concentrations studied of LA419 (10 microM, 20 microM and 100 microM) reduced overall platelet interaction with a collagen surface (27.19 +/- 4.72; 25.52 +/- 3.52; and 23.44 +/- 3.01, P < 0.05, respectively, vs. 32.31 +/- 1.61% in the control). The antithrombotic effect was confirmed by results in cross-sectional studies performed in arterial vessels exposed to circulating blood. Values of thrombus and covered surface at 20 microM LA419 were, respectively, 13.67 +/- 4.97% and 19.01 +/- 5.89%; respect to controls 34.80 +/- 5.29% and 37.93 +/- 5.34% (P < 0.05). Moreover, LA419 reduced significantly thrombus area (88.45 +/- 21.97 microm(2); P < 0.05) with respect to controls (168.45 +/- 21.97 microm(2)) and thrombus height, from an average of 10.27 +/- 1.05 microm in nontreated blood to 7.16 +/- 0.6 microm in treated samples (P < 0.05). CONCLUSION From the present data we can conclude that LA419 possesses a strong antiplatelet action, as demonstrated by its ability to significantly inhibit the interaction of platelet with highly thrombogenic collagen surfaces.
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Affiliation(s)
- M R Hernandez
- Hospital Clínic i Provincial IDIBAPS, Departament de Medicina, Servei d' Hemoteràpia i Hemostàsia, Universitat de Barcelona, Barcelona, Spain.
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Tonda R, Galán AM, Pino M, Hernández MR, Ayats C, Pomar JL, Ordinas A, Escolar G. In vitro evaluation of platelet reactivity toward annuloplasty devices treated with heparin coating: Studies under flow conditions. J Biomed Mater Res A 2005; 75:192-8. [PMID: 16044416 DOI: 10.1002/jbm.a.30401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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]
Abstract
We have applied an in vitro perfusion model to explore the potential thrombogenicity of polyester annulolasty fabric used in valve repair and to investigate the possible thromboresistance characteristics conferred by a special heparin coating (Duraflotrade mark treatment). Samples of human blood from i) untreated or ii) heparin-coated extracorporeal circuits were recirculated through annular perfusion chambers containing a) untreated or b) treated annuloplasty cloth material. Perfusion experiments were performed at a shear rate of 600 s(-1) for 20 min. Platelet interaction with the material was morphometrically evaluated. In experiments performed with blood from untreated circuits and cloth material, the average cross-sectional area of platelet mass was 615 +/- 135 microm2. Treatment of cloth material with Duraflotrade mark statistically decreased the area of interacting platelets to 319 +/- 101 microm2 (*p < 0.05, n = 10). Blood samples from heparin-coated extracorporeal circuits showed a decrease of total area of platelets (308 +/- 58 microm2 vs 138 +/- 30 microm2, *p < 0.05, n = 9). The combined treatment of Duraflotrade mark in extracorporeal circuits and cloth material caused a more consistent reduction (p < 0.05). The in vitro perfusion experimental model was sensitive to evaluate the thrombogenic potential of Duraflotrade mark treatment. Our results indicate that the heparin coating of cloth material and extracorporeal circuits improves the biocompatibility of the original material and reduces the thrombogenic profile.
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Affiliation(s)
- R Tonda
- Servicio de Hemoterapia-Hemostasia, Hospital Clínic, Facultad de Medicina, Fundació Clinic, IDIBAPS, Barcelona, Spain.
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Crofts F, Rohatagi S, Pino M, DeLise B, Zhang J, Nguyen M, Guittin P, Barbellion S, Brunel P, Hofmann T, Schmidt J, Wong M, Lockey P, Lerman S, Clark R. Critical period for a teratogenic VLA-4 antagonist: Developmental effects and comparison of embryo drug concentrations of teratogenic and non-teratogenic VLA-4 antagonists. ACTA ACUST UNITED AC 2004; 71:69-79. [PMID: 15098200 DOI: 10.1002/bdrb.20000] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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]
Abstract
BACKGROUND Integrins such as VLA-4 (Very late antigen 4, integrin alpha4beta1) play key roles in cell-cell interactions that are critical for development. Homozygous null knockouts of the VLA-4 alpha4-subunit or VCAM-1 (VLA-4 cell surface ligand) in mice result in failure of the allantois and chorion to fuse leading to interrupted placentation and cardiac development and embryo lethality. Embryo-fetal studies of three VLA-4 antagonists, IVL745, IVL984, and HMR1031 [Crofts et al., Birth Defects Res B 71:55-68 (this issue), 2004] with exposure on gestation days (GD) 6-17 (rat), 6-18 (rabbit) or 6-15 (mouse) showed that only IVL984 treatment resulted in embryo lethality and cardiac defects. Objectives of the current study were to determine the critical period for inducing IVL984-related embryo-fetal effects, and to test the hypothesis that these effects were due to higher embryo drug concentrations. METHODS IVL984 was administered at 40 mg/kg/day to pregnant rats on GD 4 and 5, GD 6 and 7, GD 8 and 9, GD 10 and 11, or GD 12 and 13. Animals were euthanized on GD 21 and uteri and fetuses were examined. A treatment period of GD 10-12 was selected for subsequent toxicokinetic (TK) studies in which IVL984, HMR1031, or IVL745 was administered to pregnant rats and rabbits. On GD 12, maternal plasma, extra-embryonic tissue (placenta and amniotic fluid), and embryonic tissue were collected and analyzed for drug concentrations. RESULTS In the IVL984 critical period study in pregnant rats, treatment on GD 10 and 11 resulted in increased post-implantation loss, skeletal variations, and spiral septal defects similar to those observed in standard embryo-fetal development studies with treatment throughout organogenesis. There were no embryo-fetal effects after treatment on GD 4 and 5, GD 6 and 7, or GD 8 and 9. There was a single aorta malformation after treatment on GD 12 and 13. In the TK studies, IVL745, HMR1031, and IVL984 were all detectable in embryonic tissue and there was no evidence for accumulation. Rat and rabbit embryo exposures (AUC or dose-adjusted AUC) on GD 12 could not explain the observed teratology (IVL984<HMR1031<IVL745). Further analyses incorporating pharmacological activity, clearance, and protein binding data provided a positive correlation between embryonic exposure and teratogenic potency. CONCLUSIONS The critical period for IVL984 in the rat, GD 10 to 11, corresponds to the expression of alpha-4 integrin on the chorion and VCAM-1 on the allantois and myocardium as well as chorioallantoic fusion and formation of the spiral septum. Embryo drug levels adjusted for pharmacological activity, clearance, and protein binding provide a possible explanation for the differing teratogenic potency of IVL984, HMR1031, and IVL745.
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Affiliation(s)
- F Crofts
- Department of Drug Safety Evaluation, Aventis Inc., Bridgewater, New Jersey 08807, USA.
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Morgan KT, Pino M, Crosby LM, Wang M, Elston TC, Jayyosi Z, Bonnefoi M, Boorman G. Complementary roles for toxicologic pathology and mathematics in toxicogenomics, with special reference to data interpretation and oscillatory dynamics. Toxicol Pathol 2004; 32 Suppl 1:13-25. [PMID: 15209399 DOI: 10.1080/01926230490424789] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Toxicogenomics is an emerging multidisciplinary science that will profoundly impact the practice of toxicology. New generations of biologists, using evolving toxicogenomics tools, will generate massive data sets in need of interpretation. Mathematical tools are necessary to cluster and otherwise find meaningful structure in such data. The linking of this structure to gene functions and disease processes, and finally the generation of useful data interpretation remains a significant challenge. The training and background of pathologists make them ideally suited to contribute to the field of toxicogenomics, from experimental design to data interpretation. Toxicologic pathology, a discipline based on pattern recognition, requires familiarity with the dynamics of disease processes and interactions between organs, tissues, and cell populations. Optimal involvement of toxicologic pathologists in toxicogenomics requires that they communicate effectively with the many other scientists critical for the effective application of this complex discipline to societal problems. As noted by Petricoin III et al (Nature Genetics 32, 474-479, 2002), cooperation among regulators, sponsors and experts will be essential for realizing the potential of microarrays for public health. Following a brief introduction to the role of mathematics in toxicogenomics, "data interpretation" from the perspective of a pathologist is briefly discussed. Based on oscillatory behavior in the liver, the importance of an understanding of mathematics is addressed, and an approach to learning mathematics "later in life" is provided. An understanding of pathology by mathematicians involved in toxicogenomics is equally critical, as both mathematics and pathology are essential for transforming toxicogenomics data sets into useful knowledge.
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Mo H, Trogisch S, Taub H, Ehrlich SN, Volkmann UG, Hansen FY, Pino M. Structure and growth of dotriacontane films on SiO2 and Ag(111) surfaces: synchrotron X-ray scattering and molecular dynamics simulations. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pssa.200404894] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Hernandez MR, Tonda R, Pino M, Serradell M, Arderiu G, Escolar G. Evaluation of effects of rofecoxib on platelet function in an in vitro model of thrombosis with circulating human blood. Eur J Clin Invest 2004; 34:297-302. [PMID: 15086362 DOI: 10.1111/j.1365-2362.2004.01334.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Cyclooxygenase (COX)-2-selective non-steroidal anti-inflammatory drugs have been used for anti-inflammatory therapy. However, it has also been described that they may increase risk of cardiovascular events. OBJECTIVES To study the effects of COX2 inhibitor rofecoxib on platelet function using in vitro tests. Results were compared with those obtained in a parallel experiment with acetyl salicylic acid (ASA). METHODS Studies of platelet aggregation, using different agonists, were performed by a turbidimetric method. Adhesive and cohesive function of platelets were analyzed by perfusion techniques, treated blood was exposed to thrombogenic surfaces and platelet interaction was morphometrically evaluated. RESULTS Twenty-five micro M of rofecoxib induced a prolonged lag time and a reduction in the percentage of aggregation when arachidonic acid, ADP or collagen were used as agonists. In perfusion studies with parallel chamber rofecoxib 50 microM and ASA 500 microM reduced overall platelet interaction with the collagen surface (17.4 +/- 3.7, P < 0.05; vs. 32.1 +/- 2.6%P < 0.05 and 17.9 +/- 2.4, vs. 31.9 +/- 3.24, P < 0.05, respectively). In studies performed on annular chambers, 25 micro M of rofecoxib reduced platelet interaction; values of the thrombus and covered surface were 17.4 +/- 4.5%; P < 0.05 and 21.1 +/- 4.1%; P < 0.05, respectively, vs. 30.4 +/- 7.5% and 33.5 +/- 6.5 in the control. ASA did also impair thrombus formation but differences did not reach the levels of statistical significance. Moreover, rofecoxib but not ASA reduced significantly thrombus height and thrombus area (7.4 +/- 0.5 microM; P < 0.005 and 96.0 +/- 21.2 microM(2); P < 0.05 vs. control 11.2 +/- 0.9 microM and 220.0 +/- 47.7 microM(2), respectively). CONCLUSION We conclude that under our experimental conditions, rofecoxib diminished platelet aggregation induced by different agonists and inhibited platelet-mediated thrombogenesis in an in vitro model of thrombosis.
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Crofts F, Pino M, DeLise B, Guittin P, Barbellion S, Brunel P, Potdevin S, Bergmann B, Hofmann T, Lerman S, Clark RL. Different embryo-fetal toxicity effects for three VLA-4 antagonists. ACTA ACUST UNITED AC 2004; 71:55-68. [PMID: 15098199 DOI: 10.1002/bdrb.20001] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 11/08/2022]
Abstract
BACKGROUND VLA-4 (Very late antigen 4, integrin alpha4beta1) plays an important role in cell-cell interactions that are critical for development. Homozygous null knockouts of the alpha4 subunit of VLA-4 or VCAM-1 (cell surface ligand to VLA-4) in mice result in abnormal placental and cardiac development and embryo lethality. Objectives of the current study were to assess and compare the teratogenic potential of three VLA-4 antagonists. METHODS IVL745, HMR1031, and IVL984 were each evaluated by the subcutaneous route in standard embryo-fetal developmental toxicity studies in rats and rabbits. IVL984 was also evaluated in mice. Fetuses were examined externally, viscerally, and skeletally. RESULTS IVL745 did not cause significant maternal or fetal effects at doses up to 100 or 250 mg/kg/day in rats or rabbits, respectively. HMR1031 treatment resulted in marked maternal toxicity and slight fetal toxicity at the highest tested doses of 200 and 75 mg/kg/day in rats and rabbits, respectively. HMR1031 embryo-fetal effects consisted of slightly lower body weight and crown-rump length in rats and minor sternebral defects in rabbits. IVL984 treatment resulted in minimal maternal effects at doses up to 40, 15, and 100 mg/kg/day in rats, rabbits, and mice, respectively (excluding abortions in rabbits). However, marked developmental effects were observed at the lowest tested IVL984 doses, 1, 0.2, and 3 mg/kg/day in rats, rabbits, and mice, respectively. IVL984 embryo-fetal effects consisted of increased total post-implantation loss due to early resorptions and high incidences of cardiac malformations and skeletal malformations and/or variations. Notably, spiral septal defects were observed in up to 76% of rat fetuses and up to 58% of rabbit fetuses. CONCLUSIONS Dramatic differences in teratogenic potential were observed: IVL745 was not teratogenic, HMR1031 caused slight embryo-fetal effects at maternally-toxic doses, and IVL984 was a potent teratogen at doses where direct maternal toxicity was limited to abortions in rabbits. Prominent effects of IVL984 included embryo lethality and cardiac malformations including spiral septal defects in three species.
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Affiliation(s)
- F Crofts
- Department of Drug Safety Evaluation, Aventis Inc., Bridgewater, New Jersey 08807, USA.
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Galán AM, Reverter JC, Pino M, Viñas M, Bozzo J, Hernández MR, Aznar-Salatti J, Ordinas A, Escolar G. Concentrates containing factor IX could improve haemostasis under conditions of thrombocytopenia: studies in an in vitro model. Vox Sang 2002; 82:113-8. [PMID: 11952983 DOI: 10.1046/j.1423-0410.2002.00157.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/20/2022]
Abstract
BACKGROUND AND OBJECTIVES We explored the effect on haemostasis of different factor IX (FIX) concentrates under thrombocytopenic conditions using an in vitro perfusion technique. MATERIALS AND METHODS A moderate experimental thrombocytopenia (25 000-30 000 platelets/microl) was induced by means of a filtration procedure in blood anticoagulated with low-molecular-weight heparin. The effects of three different FIX concentrates - a prothrombin complex concentrate (PCC), an intermediate-purity concentrate (FIX/X), and a high-purity concentrate (HPFIX) - on platelet deposition and fibrin formation on subendothelium were assessed at two different shear rates (600/second and 1200/second). Activation of the coagulation system was monitored through assessment of prothrombin activation fragment 1 + 2 (F1 + 2). RESULTS Fibrin deposition increased after addition of FIX concentrates, but only showed a significant increase in experiments performed after incubation of PCC at the lower shear rate (600/second) (64.25 +/- 9.61% vs. control 31.22 +/- 8.02%; P < 0.05). Addition of FIX concentrates caused a small increase in the percentage of platelet deposition and area of those aggregates. These differences reached levels of statistical significance in the presence of FIX/X and HPFIX in experiments performed at a shear rate of 600/second. F1 + 2 baseline values in anticoagulated thrombocytopenic blood were 1.15 +/- 0.13 nm and reached levels of 2.49 +/- 0.24 and 3.60 +/- 0.33 nm at shear rates of 600 and 1200/second, respectively. Increments in F1 + 2 observed after addition of different FIX concentrates always remained in the previous ranges. CONCLUSIONS Data from the present study provide experimental support favouring the concept that FIX concentrates containing other activated factors could improve haemostasis under conditions of moderate thrombocytopenia.
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Affiliation(s)
- A M Galán
- Servicio de Hemoterapia-Hemostasia, Hospital Clinic, Barcelona, Spain.
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Volkmann UG, Pino M, Altamirano LA, Taub H, Hansen FY. High-resolution ellipsometric study of an n-alkane film, dotriacontane, adsorbed on a SiO2 surface. J Chem Phys 2002. [DOI: 10.1063/1.1429645] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.5] [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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Policarpo M, Aluffi P, Dosdegani R, Pino M, Pia F. [Merkel cell carcinoma]. Acta Otorhinolaryngol Ital 2001; 21:50-3. [PMID: 11434223] [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: 02/20/2023]
Abstract
The authors present 2 cases of Merkel cell carcinoma in the head and neck district, evaluating the characteristics and evolution. Merkel cell carcinoma is a rare, highly aggressive neuroendocrine cutaneous neoplasm which is often located in the head and neck district. This carcinoma has the same characteristics as small cell tumors and tends to significant metastatization both through the lymph nodes and through the blood. It is also prone to frequent recurrence. Today diagnosis is facilitated by electron microscopy and immunohistochemistry to search for neurofilaments and cytocheratin 20. The treatment of choice is radical surgery ensuring a tumor-free edge of at least 3 cm, associated with supplementary local radiotherapy. Recurrence is quite frequent despite the treatment strategies applied.
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Affiliation(s)
- M Policarpo
- Clinica ORL, Dipartimento di Scienze Mediche, Università del Piemonte Orientale A. Avogadro, Novara
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