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Nguyen VT, Sharp MK, Superchi C, Baron G, Glonti K, Blanco D, Olsen M, Vo Tat TT, Olarte Parra C, Névéol A, Hren D, Ravaud P, Boutron I. Biomedical doctoral students' research practices when facing dilemmas: two vignette-based randomized control trials. Sci Rep 2023; 13:16371. [PMID: 37773192 PMCID: PMC10541422 DOI: 10.1038/s41598-023-42121-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 09/05/2023] [Indexed: 10/01/2023] Open
Abstract
Our aim was to describe the research practices of doctoral students facing a dilemma to research integrity and to assess the impact of inappropriate research environments, i.e. exposure to (a) a post-doctoral researcher who committed a Detrimental Research Practice (DRP) in a similar situation and (b) a supervisor who did not oppose the DRP. We conducted two 2-arm, parallel-group randomized controlled trials. We created 10 vignettes describing a realistic dilemma with two alternative courses of action (good practice versus DRP). 630 PhD students were randomized through an online system to a vignette (a) with (n = 151) or without (n = 164) exposure to a post-doctoral researcher; (b) with (n = 155) or without (n = 160) exposure to a supervisor. The primary outcome was a score from - 5 to + 5, where positive scores indicated the choice of DRP and negative scores indicated good practice. Overall, 37% of unexposed participants chose to commit DRP with important variation across vignettes (minimum 10%; maximum 66%). The mean difference [95%CI] was 0.17 [- 0.65 to 0.99;], p = 0.65 when exposed to the post-doctoral researcher, and 0.79 [- 0.38; 1.94], p = 0.16, when exposed to the supervisor. In conclusion, we did not find evidence of an impact of postdoctoral researchers and supervisors on student research practices.Trial registration: NCT04263805, NCT04263506 (registration date 11 February 2020).
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Affiliation(s)
- V T Nguyen
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Department of Health Services Research, Institute of Population Health Sciences, University of Liverpool, Liverpool, UK
| | - M K Sharp
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Department of Psychology, Faculty of Humanities and Social Sciences, University of Split, Split, Croatia
- Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland
| | - C Superchi
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Statistics and Operations Research Department, Barcelona-Tech, UPC, Barcelona, Spain
| | - G Baron
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Centre d'Epidémiologie Clinique, AP-HP, Hôpital Hôtel Dieu, 75004, Paris, France
| | - K Glonti
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Department of Psychology, Faculty of Humanities and Social Sciences, University of Split, Split, Croatia
| | - D Blanco
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Department of Physiotherapy, Universitat Internacional de Catalunya, Barcelona, Spain
| | - M Olsen
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - T T Vo Tat
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Department of Statistics and Data Science, The Wharton School, University of Pennsylvania, Philadelphia, USA
| | - C Olarte Parra
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
| | | | - D Hren
- Department of Psychology, Faculty of Humanities and Social Sciences, University of Split, Split, Croatia
| | - P Ravaud
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France
- Centre d'Epidémiologie Clinique, AP-HP, Hôpital Hôtel Dieu, 75004, Paris, France
| | - I Boutron
- Centre for Research in Epidemiology and Statistics (CRESS), Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, 75004, Paris, France.
- Centre d'Epidémiologie Clinique, AP-HP, Hôpital Hôtel Dieu, 75004, Paris, France.
- Centre d'Épidémiologie Clinique, Hôpital Hôtel Dieu, 1 place du Parvis Notre-Dame, Cedex 4, 75089, Paris, France.
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Muñoz-Cobo J, Blanco D, Berna C, Córdova Y. Review of instabilities produced by direct contact condensation of steam injected in water pools and tanks. Progress in Nuclear Energy 2022. [DOI: 10.1016/j.pnucene.2022.104404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Córdova Y, Blanco D, Berna C, Muñoz-Cobo J, Escrivá A, Rivera Y. Experimental characterization of the dimensionless momentum length for submerged jet discharges of air-steam mixtures into stagnant water. Int J CMEM 2022. [DOI: 10.2495/cmem-v10-n3-195-210] [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: 11/09/2022] Open
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Meyer E, Kruglov D, Krivic M, Tanveer M, Argaez-Ramirez R, Zhang Y, Briseno Ojeda A, Smirnova K, Alekseev K, Safari Mugisho M, Cimbili B, Farid N, Dang Y, Shahid M, Ensan M, Banar J, Bao H, Matters-Kammerer M, Gustavsson U, Demuynck F, Zwick T, Acar M, Fager C, van der Heijden M, Ivashina M, Caratelli D, Hasselblad M, Ulusoy C, Smolders A, Eriksson K, Johannson M, Maaskant R, Quay R, Floriot D, Bao M, Bronckers L, Fridén J, van Beurden M, de Hon B, Kolitsidas C, Blanco D, Willems F, Eriksson T, Filippi A, Ponzini F, Johannsen U. The state of the art in beyond 5G distributed massive multiple-input multiple-output communication system solutions. Open Res Eur 2022; 2:106. [PMID: 37982077 PMCID: PMC10654493 DOI: 10.12688/openreseurope.14501.1] [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] [Figures] [Subscribe] [Scholar Register] [Accepted: 07/25/2022] [Indexed: 11/21/2023]
Abstract
Beyond fifth generation (5G) communication systems aim towards data rates in the tera bits per second range, with improved and flexible coverage options, introducing many new technological challenges in the fields of network architecture, signal pro- cessing, and radio frequency front-ends. One option is to move towards cell-free, or distributed massive Multiple-Input Multiple-Output (MIMO) network architectures and highly integrated front-end solutions. This paper presents an outlook on be- yond 5G distributed massive MIMO communication systems, the signal processing, characterisation and simulation challenges, and an overview of the state of the art in millimetre wave antennas and electronics.
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Affiliation(s)
- E. Meyer
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - D. Kruglov
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - M. Krivic
- Keysight Technologies, Kortrijksesteenweg 1093B, 9051 Gent, Belgium
| | - M. Tanveer
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - R. Argaez-Ramirez
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - Y. Zhang
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | | | - K. Smirnova
- Karlsruhe Institute of Technology, 6131 Karlsruhe, Germany
| | - K. Alekseev
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - M. Safari Mugisho
- Fraunhofer Institute for Applied Solid State Physics, IAF, Tullastraße 72, 79108 Freiburg, Germany
| | - B. Cimbili
- Fraunhofer Institute for Applied Solid State Physics, IAF, Tullastraße 72, 79108 Freiburg, Germany
| | - N. Farid
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Y. Dang
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - M. Shahid
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - M. Ensan
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - J. Banar
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - H. Bao
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - M. Matters-Kammerer
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - U. Gustavsson
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - F. Demuynck
- Keysight Technologies, Kortrijksesteenweg 1093B, 9051 Gent, Belgium
| | - T. Zwick
- Karlsruhe Institute of Technology, 6131 Karlsruhe, Germany
| | - M. Acar
- NXP Semiconductors, High Tech Campus 60, 5656 AG Eindhoven, The Netherlands
| | - C. Fager
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - M. van der Heijden
- NXP Semiconductors, High Tech Campus 60, 5656 AG Eindhoven, The Netherlands
| | - M. Ivashina
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - D. Caratelli
- The Antenna Company, High Tech Campus 29, 5656 AE Eindhoven, The Netherlands
| | - M. Hasselblad
- Gapwaves, Nellickevagen 22, 412 63 Gothenburg, Sweden
| | - C. Ulusoy
- Karlsruhe Institute of Technology, 6131 Karlsruhe, Germany
| | - A.B. Smolders
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - K. Eriksson
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - M. Johannson
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - R. Maaskant
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - R. Quay
- Fraunhofer Institute for Applied Solid State Physics, IAF, Tullastraße 72, 79108 Freiburg, Germany
| | - D. Floriot
- United Monolithic Semiconductors SAS, Bâtiment Charmille, Mosaic parc de Courtaboeuf, 10 avenue du Québec, 91140, Villebon-sur-Yvette, France
| | - M. Bao
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - L.A. Bronckers
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - J. Fridén
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - M.C. van Beurden
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - B.P. de Hon
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - C. Kolitsidas
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - D. Blanco
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - F.M.J. Willems
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - T. Eriksson
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - A. Filippi
- NXP Semiconductors, High Tech Campus 60, 5656 AG Eindhoven, The Netherlands
| | - F. Ponzini
- Ericsson Telecomunicazioni SpA, Via Anagnina 203, 00118 Rome, Italy
| | - U. Johannsen
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
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Loureiro B, De la Cruz Bértolo J, Blanco D, Ginovart G, Jiménez A, Martín Y, Soriano J, Torres MJ, Vento M, Pallás‐Alonso CR. National protocol led to significant improvements in follow-up programmes for very low birth weight or very preterm infants. Acta Paediatr 2021; 110:2357-2358. [PMID: 33792086 DOI: 10.1111/apa.15864] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 03/21/2021] [Accepted: 03/29/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Begoña Loureiro
- Division of Neonatology Biocruces Health Research Institute University Hospital Cruces Barakaldo Spain
| | - Javier De la Cruz Bértolo
- Division of Neonatology Health Research Institute i + 12 University Hospital 12 de Octubre Universidad Complutense Madrid Spain
| | - Dorotea Blanco
- Division of Neonatology University Hospital Gregorio Marañón Madrid Spain
| | - Gemma Ginovart
- Division of Neonatology Germans Trias i Pujol Hospital Badalona Spain
| | - Ana Jiménez
- Division of Neonatology Hospital de Algeciras Cádiz Spain
| | - Yolanda Martín
- Primary Care Paediatrician Health Care Center Goya Madrid Spain
| | - Javier Soriano
- Primary Care Paediatrician Health Care Center Fuensanta Valencia Spain
| | - María José Torres
- Division of Neonatology University Hospital 12 de Octubre Madrid Spain
| | - Máximo Vento
- Division of Neonatology Neonatal Research Group Health Research Institute La FeUniversity and Polytechnic Hospital La Fe Valencia Spain
| | - Carmen Rosa Pallás‐Alonso
- Division of Neonatology Health Research Institute i + 12 University Hospital 12 de Octubre Universidad Complutense Madrid Spain
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Garcia-Alix A, Arnaez J, Herranz-Rubia N, Alarcón A, Arca G, Valverde E, Blanco D, Lubian S. Ten years since the introduction of therapeutic hypothermia in neonates with perinatal hypoxic-ischaemic encephalopathy in Spain. Neurologia 2020; 38:S0213-4853(20)30227-9. [PMID: 32988661 DOI: 10.1016/j.nrl.2020.05.017] [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] [Received: 02/11/2020] [Revised: 05/01/2020] [Accepted: 05/31/2020] [Indexed: 10/23/2022] Open
Abstract
INTRODUCTION More than a decade has passed since therapeutic hypothermia (TH) was introduced in Spain; this is the only neuroprotective intervention that has become standard practice in the treatment of perinatal hypoxic-ischaemic encephalopathy (HIE). This article aims to provide a current picture of the technique and to address the controversies surrounding its use. DEVELOPMENT In the last 10 years, TH has been successfully implemented in the vast majority of tertiary hospitals in Spain, and more than 85% of newborns with moderate or severe HIE currently receive the treatment. The factors that can improve the efficacy of TH include early treatment onset (first 6hours of life) and the control of comorbid factors associated with perinatal asphyxia. In patients with moderate HIE, treatment onset after 6hours seems to have some neuroprotective efficacy. TH duration longer than 72hours or deeper hypothermia do not offer greater neuroprotective efficacy, but instead increase the risk of adverse effects. Unclarified aspects are the sedation of patients during TH, the application of the treatment in infants with mild HIE, and its application in other scenarios. Prognostic information and time frame are one of the most challenging aspects. CONCLUSIONS TH is universal in countries with sufficient economic resources, although certain unresolved controversies remain. While the treatment is widespread in Spain, there is a need for cooling devices for the transfer of these patients and their centralisation.
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Affiliation(s)
- A Garcia-Alix
- Institut de Recerca Sant Joan de Déu, Hospital Universitario Sant Joan de Dèu, Barcelona, España; Universidad de Barcelona, Barcelona, España; Fundación NeNe, España; Grupo Cerebro Neonatal.
| | - J Arnaez
- Unidad de Neonatología, Hospital Universitario de Burgos, Burgos, España; Fundación NeNe, España; Grupo Cerebro Neonatal
| | - N Herranz-Rubia
- Institut de Recerca Sant Joan de Déu, Hospital Universitario Sant Joan de Dèu, Barcelona, España; Servicio de Neonatología. Hospital Sant Joan de Dèu, Barcelona, España; Universidad de Barcelona, Barcelona, España
| | - A Alarcón
- Institut de Recerca Sant Joan de Déu, Hospital Universitario Sant Joan de Dèu, Barcelona, España; Servicio de Neonatología. Hospital Sant Joan de Dèu, Barcelona, España; Grupo Cerebro Neonatal
| | - G Arca
- Departamento de Neonatología, Hospital Clinic, IDIBAPS, Barcelona, España; Fundación NeNe, España; Grupo Cerebro Neonatal
| | - E Valverde
- Servicio de Neonatología, Hospital Universitario La Paz, Madrid, España; Fundación NeNe, España; Grupo Cerebro Neonatal
| | - D Blanco
- Servicio de Neonatología, Hospital Gregorio Marañón, Madrid, España; Grupo Cerebro Neonatal
| | - S Lubian
- Servicio de Neonatología, Hospital Puerta del Mar, Cádiz, España; Fundación NeNe, España; Grupo Cerebro Neonatal
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Ceballos D, Blanco D, Koichi A, Abdul-Rahim O. Abstract No. 523 Biopsy-gauge size, patient, and lesional factors affecting iatrogenic pneumothorax rates for lung biopsies. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Rivera N, Blanco D, Viesca J, Fernández-González A, González R, Battez AH. Tribological performance of three fatty acid anion-based ionic liquids (FAILs) used as lubricant additive. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111881] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Rivera N, García A, Fernández-González A, Blanco D, González R, Battez AH. Tribological behavior of three fatty acid ionic liquids in the lubrication of different material pairs. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111858] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Oulego P, Faes J, González R, Viesca J, Blanco D, Battez AH. Relationships between the physical properties and biodegradability and bacteria toxicity of fatty acid-based ionic liquids. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111451] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Blanco D, Rivera N, Oulego P, Díaz M, González R, Battez AH. Novel fatty acid anion-based ionic liquids: Contact angle, surface tension, polarity fraction and spreading parameter. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.110995] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Battez AH, Rivera N, Blanco D, Oulego P, Viesca J, González R. Physicochemical, traction and tribofilm formation properties of three octanoate-, laurate- and palmitate-anion based ionic liquids. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.04.050] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nuñez-Ramiro A, Benavente-Fernández I, Valverde E, Cordeiro M, Blanco D, Boix H, Cabañas F, Chaffanel M, Fernández-Colomer B, Fernández-Lorenzo JR, Kuligowski J, Loureiro B, Moral-Pumarega MT, Pavón A, Sánchez-Illana A, Tofé I, Hervás D, García-Robles A, Parra-Llorca A, Cernada M, Martinez-Rodilla J, Lorente-Pozo S, Llorens R, Marqués R, Vento M. Topiramate plus Cooling for Hypoxic-Ischemic Encephalopathy: A Randomized, Controlled, Multicenter, Double-Blinded Trial. Neonatology 2019; 116:76-84. [PMID: 31091527 DOI: 10.1159/000499084] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 02/22/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND OBJECTIVES Therapeutic interventions to improve the efficacy of whole-body cooling for hypoxic-ischemic encephalopathy (HIE) are desirable. Topiramate has been effective in reducing brain damage in experimental studies. However, in the clinical setting information is limited to a small number of feasibility trials. We launched a randomized controlled double-blinded topiramate/placebo multicenter trial with the primary objective being to reduce the antiepileptic activity in cooled neonates with HIE and assess if brain damage would be reduced as a consequence. STUDY DESIGN Neonates were randomly assigned to topiramate or placebo at the initiation of hypothermia. Topiramate was administered via a nasogastric tube. Brain electric activity was continuously monitored. Topiramate pharmacokinetics, energy-related and Krebs' cycle intermediates, and lipid peroxidation biomarkers were determined using liquid chromatography-mass spectrometry and MRI for assessing brain damage. RESULTS Out of 180 eligible patients 110 were randomized, 57 (51.8%) to topiramate and 53 (48.2%) to placebo. No differences in the perinatal or postnatal variables were found. The topiramate group exhibited less seizure burden in the first 24 h of hypothermia (topiramate, n = 14 [25.9%] vs. placebo, n = 22 [42%]); needed less additional medication, and had lower mortality (topiramate, n = 5 [9.2%] vs. placebo, n = 10 [19.2%]); however, these results did not achieve statistical significance. Topiramate achieved a therapeutic range in 37.5 and 75.5% of the patients at 24 and 48 h, respectively. A significant association between serum topiramate levels and seizure activity (p < 0.016) was established. No differences for oxidative stress, energy-related metabolites, or MRI were found. CONCLUSIONS Topiramate reduced seizures in patients achieving therapeutic levels in the first hours after treatment initiation; however, they represented only a part of the study population. Our results warrant further studies with higher loading and maintenance dosing of topiramate.
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Affiliation(s)
- Antonio Nuñez-Ramiro
- Division of Neonatology, University and Polytechnic Hospital La Fe, Valencia, Spain
| | | | - Eva Valverde
- Division of Neonatology, University Hospital La Paz, Madrid, Spain
| | - Malaika Cordeiro
- Division of Neonatology, University Hospital La Paz, Madrid, Spain
| | - Dorotea Blanco
- Division of Neonatology, University Hospital Gregorio Marañón, Madrid, Spain
| | - Hector Boix
- Department of Neonatology, University Hospital Vall d'Hebrón, Barcelona, Spain
| | - Fernando Cabañas
- Division of Neonatology, University Hospital Quirónsalud Madrid, Madrid, Spain
| | - Mercedes Chaffanel
- Division of Neonatology, Regional University Hospital Málaga, Málaga, Spain
| | | | | | | | - Begoña Loureiro
- Division of Neonatology, University Hospital Cruces, Bilbao, Spain
| | | | - Antonio Pavón
- Division of Neonatology, University Hospital Virgen del Rocío, Sevilla, Spain
| | | | - Inés Tofé
- Division of Neonatology, University Hospital Reina Sofía, Córdoba, Spain
| | - David Hervás
- Department of Biostatistics, Health Research Institute La Fe, Valencia, Spain
| | - Ana García-Robles
- Division of Neonatology, University Hospital Complex of Vigo, Vigo, Spain
| | - Anna Parra-Llorca
- Division of Neonatology, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - Maria Cernada
- Division of Neonatology, University and Polytechnic Hospital La Fe, Valencia, Spain
| | | | | | - Roberto Llorens
- Department of Radiology, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - Remedios Marqués
- Departament of Pharmacy, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - Máximo Vento
- Division of Neonatology, University and Polytechnic Hospital La Fe, Valencia, Spain, .,Health Research Institute La Fe, Valencia, Spain,
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Gil-Jaurena JM, González-López MT, Pita A, Pérez-Caballero R, Herviás M, Blanco D. Beating-heart aortic arch surgery in neonates and infants. Interact Cardiovasc Thorac Surg 2018; 27:586-590. [PMID: 29617791 DOI: 10.1093/icvts/ivy099] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 03/04/2018] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Aortic arch repair has been shifted from deep hypothermia plus circulatory arrest to cerebral perfusion at tepid temperatures. A step forward is a simultaneous brain-coronary perfusion, allowing beating-heart arch surgery. METHODS A 'Y' cannula from the arterial line delivers oxygenated blood to brain and heart. The arch is repaired on a beating heart at 25°C. Intracardiac repair is performed after running cardioplegia through the root line. Fifty patients are classified into 3 groups: A, Norwood (8 neonates); B, aortic arch (14 children) and C, aortic arch plus intracardiac repair (28 patients). Associated anomalies in Group C are as follows: ventricular septal defect (10), arterial switch (5), atrial septal defect (4), cor triatriatum (3), aortic commissurotomy (2), comprehensive repair (2), ostium primum (1) and Yasui (1). RESULTS The mean bypass time was 161 ± 54.44 (range 93-312) min. Mean brain-coronary perfusion was 37.26 ± 10.54 (18-60) min. Mean coronary ischaemia was 31 ± 32.40 (0-160) min. The heart was not arrested in Group B patients. Follow-up was complete for a mean of 30 (1-48) months. Four patients died in the postoperative period. Two required angioplasty for recoarctation. CONCLUSIONS Selective brain-coronary perfusion is feasible and easy to switch to conventional cardioplegia delivery. Coronary ischaemia can be notably reduced and even 0 min in isolated arch surgery.
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Affiliation(s)
- Juan-Miguel Gil-Jaurena
- Department of Pediatric Cardiac Surgery, Hospital GU Gregorio Marañón, Madrid, Spain.,Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - María-Teresa González-López
- Department of Pediatric Cardiac Surgery, Hospital GU Gregorio Marañón, Madrid, Spain.,Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Ana Pita
- Department of Pediatric Cardiac Surgery, Hospital GU Gregorio Marañón, Madrid, Spain.,Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Ramón Pérez-Caballero
- Department of Pediatric Cardiac Surgery, Hospital GU Gregorio Marañón, Madrid, Spain.,Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Mónica Herviás
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.,Department of Pediatric Anesthesiology, Hospital GU Gregorio Marañón, Madrid, Spain
| | - Dorotea Blanco
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.,Department of Neonatology, Hospital GU Gregorio Marañón, Madrid, Spain
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Blanco D, Ruiz Sancho V, Barranco R, Fernández C, Bobolea I. [Hypersensitivity to non-steroidal anti-inflammatory drugs, food allergy and mast cell activation syndrome: Relevance of the full allergy testing panel and a brief review of the subject, including two clinical case reports]. Semergen 2018; 44:506-508. [PMID: 30206037 DOI: 10.1016/j.semerg.2018.04.006] [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] [Received: 03/28/2018] [Accepted: 04/30/2018] [Indexed: 10/28/2022]
Affiliation(s)
- D Blanco
- Servicio de Alergología, Hospital Universitario 12 de Octubre, i+12, Madrid, España.
| | - V Ruiz Sancho
- Servicio de Alergología, Hospital Universitario 12 de Octubre, i+12, Madrid, España
| | - R Barranco
- Servicio de Alergología, Hospital Universitario 12 de Octubre, i+12, Madrid, España
| | - C Fernández
- Servicio de Alergología, Hospital Universitario 12 de Octubre, i+12, Madrid, España
| | - I Bobolea
- Servicio de Neumología y Alergia respiratoria, ICR, Hospital Clínic, Barcelona, España
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Shields S, Vincent K, Blanco D, Trotch A, Van't Hof W. Performance evaluation of BD FACSVia System Versus FACSCanto II for CD34 enumeration in fresh and frozen cord blood products. Cytotherapy 2018. [DOI: 10.1016/j.jcyt.2018.02.203] [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]
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18
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Nuñez A, Benavente I, Blanco D, Boix H, Cabañas F, Chaffanel M, Fernández-Colomer B, Fernández-Lorenzo JR, Loureiro B, Moral MT, Pavón A, Tofé I, Valverde E, Vento M. Oxidative stress in perinatal asphyxia and hypoxic-ischaemic encephalopathy. An Pediatr (Barc) 2018. [DOI: 10.1016/j.anpede.2017.05.004] [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: 10/17/2022] Open
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Sánchez-Illana Á, Núñez-Ramiro A, Cernada M, Parra-Llorca A, Valverde E, Blanco D, Moral-Pumarega MT, Cabañas F, Boix H, Pavon A, Chaffanel M, Benavente-Fernández I, Tofe I, Loureiro B, Fernández-Lorenzo JR, Fernández-Colomer B, García-Robles A, Kuligowski J, Vento M. Evolution of Energy Related Metabolites in Plasma from Newborns with Hypoxic-Ischemic Encephalopathy during Hypothermia Treatment. Sci Rep 2017; 7:17039. [PMID: 29213095 PMCID: PMC5719006 DOI: 10.1038/s41598-017-17202-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 11/22/2017] [Indexed: 12/17/2022] Open
Abstract
Therapeutic hypothermia (TH) initiated within 6 h from birth is the most effective therapeutic approach for moderate to severe hypoxic-ischemic encephalopathy (HIE). However, underlying mechanisms and effects on the human metabolism are not yet fully understood. This work aims at studying the evolution of several energy related key metabolites in newborns with HIE undergoing TH employing gas chromatography - mass spectrometry. The method was validated following stringent FDA requirements and applied to 194 samples from a subgroup of newborns with HIE (N = 61) enrolled in a multicenter clinical trial (HYPOTOP) for the determination of lactate, pyruvate, ketone bodies and several Krebs cycle metabolites at different sampling time points. The analysis of plasma samples from newborns with HIE revealed a decrease of lactate, pyruvate and β-hydroxybutyrate concentrations, whereas rising malate concentrations were observed. In healthy control newborns (N = 19) significantly lower levels of pyruvate and lactate were found in comparison to age-matched newborns with HIE undergoing TH, whereas acetoacetate and β-hydroxybutyrate levels were clearly increased. Access to a validated analytical method and a controlled cohort of newborns with HIE undergoing hypothermia treatment for the first time allowed the in-depth study of the evolution of key metabolites of metabolic junctions in this special population.
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Affiliation(s)
- Ángel Sánchez-Illana
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Antonio Núñez-Ramiro
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - María Cernada
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Anna Parra-Llorca
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Eva Valverde
- Hospital Universitario La Paz, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Dorotea Blanco
- Hospital Universitario Gregorio Marañón, C/O'Donnell 48-50, 28009, Madrid, Spain
| | | | - Fernando Cabañas
- Hospital Universitario Quirónsalud Madrid, Calle Diego de Velazquez s/n, 28223, Madrid, Spain
| | - Hector Boix
- Hospital Universitario Vall d'Hebron, Passeig Vall d'Hebron 119-129, 08035, Barcelona, Spain
| | - Antonio Pavon
- Hospital Universitario Virgen del Rocío, Avda. Manuel Siurot, s/n, 41013, Sevilla, Spain
| | - Mercedes Chaffanel
- Hospital Materno Infantil Carlos Haya, Avda. Arroyo de los Angeles s/n, 29011, Málaga, Spain
| | | | - Inés Tofe
- Hospital Universitario Reina Sofía, Avda. Menendez Pidal s/n, 14004, Córdoba, Spain
| | - Begoña Loureiro
- Hospital Universitario Cruces, Plaza Cruces s/n, 48903, Barakaldo, Vizcaya, Spain
| | | | | | - Ana García-Robles
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Julia Kuligowski
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain.
| | - Máximo Vento
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain.
- Division of Neonatology, University & Polytechnic Hospital La Fe, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain.
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Sanchez-Castillo M, Blanco D, Tienda-Luna IM, Carrion MC, Huang Y. A Bayesian framework for the inference of gene regulatory networks from time and pseudo-time series data. Bioinformatics 2017; 34:964-970. [DOI: 10.1093/bioinformatics/btx605] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 09/22/2017] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - D Blanco
- Department of Applied Physics, University of Granada, Granada, Spain
| | - I M Tienda-Luna
- Department of Electrical Engineering, University of Granada, Granada, Spain
| | - M C Carrion
- Department of Applied Physics, University of Granada, Granada, Spain
| | - Yufei Huang
- Department of Electrical Engineering, University of Texas at San Antonio, San Antonio, TX, USA
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21
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Nuñez A, Benavente I, Blanco D, Boix H, Cabañas F, Chaffanel M, Fernández-Colomer B, Fernández-Lorenzo JR, Loureiro B, Moral MT, Pavón A, Tofé I, Valverde E, Vento M. [Oxidative stress in perinatal asphyxia and hypoxic-ischaemic encephalopathy]. An Pediatr (Barc) 2017. [PMID: 28648366 DOI: 10.1016/j.anpedi.2017.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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] [Indexed: 12/22/2022] Open
Abstract
Birth asphyxia is one of the principal causes of early neonatal death. In survivors it may evolve to hypoxic-ischaemic encephalopathy and major long-term neurological morbidity. Prolonged and intense asphyxia will lead to energy exhaustion in tissues exclusively dependent on aerobic metabolism, such as the central nervous system. Energy deficit leads to ATP-dependent pumps blockage, with the subsequent loss of neuronal transmembrane potential. The most sensitive areas of the brain will die due to necrosis. In more resistant areas, neuronal hyper-excitability, massive entrance of ionic calcium, activation of NO-synthase, free radical generation, and alteration in mitochondrial metabolism will lead to a secondary energy failure and programmed neuronal death by means of the activation of the caspase pathways. A third phase has recently been described that includes persistent inflammation and epigenetic changes that would lead to a blockage of oligodendrocyte maturation, alteration of neurogenesis, axonal maturation, and synaptogenesis. In this scenario, oxidative stress plays a critical role causing direct damage to the central nervous system and activating metabolic cascades leading to apoptosis and inflammation. Moderate whole body hypothermia to preserve energy stores and to reduce the formation of oxygen reactive species attenuates the mechanisms that lead to the amplification of cerebral damage upon resuscitation. The combination of hypothermia with coadjuvant therapies may contribute to improve the prognosis.
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Affiliation(s)
- Antonio Nuñez
- Hospital Universitario y Politécnico La Fe, Valencia, España
| | | | | | - Héctor Boix
- Hospital Universitario Vall d'Hebron, Barcelona, España
| | - Fernando Cabañas
- Hospital Universitario Quirónsalud Madrid, Pozuelo de Alarcón, Madrid, España
| | | | | | | | - Begoña Loureiro
- Hospital Universitario de Cruces, Barakaldo, Vizcaya, España
| | | | - Antonio Pavón
- Hospital Universitario Virgen del Rocío, Sevilla, España
| | - Inés Tofé
- Hospital Universitario Reina Sofía, Córdoba, España
| | | | - Máximo Vento
- Hospital Universitario y Politécnico La Fe, Valencia, España.
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22
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Calvo H, Marco P, Blanco D, Oria R, Venturini M. Potential of a new strain of Bacillus amyloliquefaciens BUZ-14 as a biocontrol agent of postharvest fruit diseases. Food Microbiol 2017; 63:101-110. [DOI: 10.1016/j.fm.2016.11.004] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 10/28/2016] [Accepted: 11/07/2016] [Indexed: 11/26/2022]
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23
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del Río R, Ochoa C, Alarcon A, Arnáez J, Blanco D, García-Alix A. Amplitude Integrated Electroencephalogram as a Prognostic Tool in Neonates with Hypoxic-Ischemic Encephalopathy: A Systematic Review. PLoS One 2016; 11:e0165744. [PMID: 27802300 PMCID: PMC5089691 DOI: 10.1371/journal.pone.0165744] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 10/16/2016] [Indexed: 02/03/2023] Open
Abstract
Introduction Perinatal management and prognostic value of clinical evaluation and diagnostic tools have changed with the generalization of therapeutic hypothermia (TH) in infants with hypoxic-ischemic encephalopathy (HIE) Aim to ascertain the prognostic value of amplitude integrated electroencephalogram (aEEG) in neonates with HIE considering hours of life and treatment with TH. Methods A systematic review was performed. Inclusion criteria were studies including data of neonates with HIE, treated or not with TH, monitored with aEEG and with neurodevelopmental follow-up of at least 12 months. The period of bibliographic search was until February 2016. No language restrictions were initially applied. Consulted databases were MEDLINE, Scopus, CINHAL and the Spanish language databases GuiaSalud and Bravo. Article selection was performed by two independent reviewers. Quality for each individual paper selected was evaluated using QUADAS-2. Review Manager (RevMan) version 5.3 software was used. Forest plots were constructed to graphically show sensitivity and specificity for all included studies, separating patients treated or not with hypothermia. Summary statistics were estimated using bivariate models and random effects approaches with the R package MADA from summary ROC curves. Meta-regression was used to estimate heterogeneity and trends. Results from the 403 articles initially identified, 17 were finally included and critically reviewed. In infants not treated with hypothermia the maximum reliability of an abnormal aEEG background to predict death or moderate/severe disability was at 36 hours of life, when a positive post-test probability of 97.90% was achieved (95%CI 88.40 to 99.40%). Positive likelihood ratio (+LR) at these hours of life was 26.60 (95%CI 4.40 to 94.90) and negative likelihood ratio (-LR) was 0.23 (95%CI 0.10 to 0.44). A high predictive value was already present at 6 hours of life in this group of patients, with a positive post-test probability of 88.20% (95%CI 79.80 to 93%) and a +LR of 4.34 (95%CI 2.31 to 7.73). In patients treated with TH the maximum predictive reliability was achieved at 72 hours of life (post-test probability of 95.70%, 95%CI 84.40 to 98.50%). +LR at this age was 24.30 (95%CI 5.89 to 71.30) and–LR was 0.40 (95%CI 0.25 to 0.57). Predictive value of aEEG at 6 hours of life was low in these patients (59.10%, 95%CI 55.70 to 63%). Conclusion This study confirms that aEEG´s background activity, as recorded during the first 72 hours after birth, has a strong predictive value in infants with HIE treated or not with TH. Predictive values of traces throughout the following 72 hours are a helpful guide when considering and counselling parents about the foreseeable long-term neurological outcome
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Affiliation(s)
- Ruth del Río
- Department of Neonatology, Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Barcelona, Spain
- * E-mail:
| | - Carlos Ochoa
- Research Unit, Hospital Virgen de la Concha, Zamora, Spain
| | - Ana Alarcon
- Department of Neonatology, Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Barcelona, Spain
- Department of Neonatology, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Juan Arnáez
- Department of Neonatology, Hospital Universitario Burgos, Burgos, Spain
| | - Dorotea Blanco
- Department of Neonatology, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Alfredo García-Alix
- Department of Neonatology, Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Barcelona, Spain
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González Y, Mancebo A, Acosta E, Sosa I, León A, Blanco D, González C, Curbelo A, Prado P, Morgado L, Quesada R, Pérez A, Hugues B, Fuentes D, Samada I, Casacó A, Sánchez S, Contreras F, Contreras B, Ballart N, Valdés O, Lemus M, Estévez T, Jaime U, Díaz Y, Peña A, Ronda M, Pérez B, Escalona M, Mantilla N, Matos D. Toxicological safety evaluation of ACM T1H by intravenously route in CENP: Beagle dogs. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.623] [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]
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Djenane D, Martínez L, Sánchez-Escalante A, Montañés L, Blanco D, Yangüela J, Beltrán JA, Roncalés P. Effect of Lactic Acid Bacteria on Beef Steak Microbial Flora Stored Under Modified Atmosphere and on Listeria Monocytogenes in Broth Cultures. FOOD SCI TECHNOL INT 2016. [DOI: 10.1177/1082013206067788] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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
Beef steaks were inoculated with one or other of two protective strains of lactic acid bacteria, the bacteriocinogenic Lactobacillus sakei CTC 372 or the uncharacterised Lactobacillus CTC 711. They were stored under modified atmospheres (20–40% CO2). Inoculation of meat with both strains inhibited the growth of the spoilage bacteria. Neither CO2 in the pack atmosphere, inoculation with protective strains, nor a combination of both, affected formation of metmyoglobin or the development of off-odours. The formation of metmyoglobin in meat pigments and the sensory odour scores were compatible to those of fresh meat which had not undergone either oxidative deterioration or microbial spoilage. Listeria monocytogenes were inhibited in broth by meat surface microbiota containing either of the protective strains. With an initial population of 5.6 log cfu/mL, after 7 days incubation at 3°C, Listeria monocytogenes were recovered at log mean population of 2.8 log cfu/mL when neither protective strain was present. At 8°C, the population of Listeria monocytogenes recovered were reduced by about 2.5 or 1.5 log cfu/mL in the presence of Lactobacillus sakei CTC 372 or Lactobacillus CTC 711, respectively. At 25°C, the population of Listeria monocytogenes recovered from broth containing either protective strain were about 5 log cfu/mL less than the population recovered from broth containing Listeria monocytogenes only.
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Affiliation(s)
- D. Djenane
- Department of Microbiology and Biochemistry, Faculty of Biology and Agricultural Sciences, University Mouloud Maameri. 15000 Tizi-Ouzou, Algeria; Department of Animal Production and Food Science, Laboratories of Food Technology and Food Hygiene, Faculty of Veterinary Science, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
| | - L. Martínez
- Department of Animal Production and Food Science, Laboratories of Food Technology and Food Hygiene, Faculty of Veterinary Science, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
| | - A. Sánchez-Escalante
- Centro de Investigación en Alimentación y Desarrollo A.C., Apartado Postal 1735, Hermosillo, Sonora 83000, Mexico
| | - L. Montañés
- EIMAH (Equipo de Investigación Multidisciplinar en Alimentación Humana), Faculty of Veterinary Science, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
| | | | | | - J. A. Beltrán
- Department of Animal Production and Food Science, Laboratories of Food Technology and Food Hygiene, Faculty of Veterinary Science, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
| | - P. Roncalés
- Department of Animal Production and Food Science, Laboratories of Food Technology and Food Hygiene, Faculty of Veterinary Science, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
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Blanco D, Bartolomé M, Ramajo B, Viesca JL, González R, Hernández Battez A. Wetting Properties of Seven Phosphonium Cation-Based Ionic Liquids. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00821] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D. Blanco
- Department
of Construction and Manufacturing Engineering, University of Oviedo, Asturias, Spain
| | - M. Bartolomé
- Department
of Marine Science and Technology, University of Oviedo, Asturias, Spain
| | - B. Ramajo
- Department
of Physical and Analytical Chemistry, University of Oviedo, Asturias, Spain
| | - J. L. Viesca
- Department
of Construction and Manufacturing Engineering, University of Oviedo, Asturias, Spain
- Department
of Design and Engineering, Bournemouth University, Poole BH12 5BB, United Kingdom
| | - R. González
- Department
of Marine Science and Technology, University of Oviedo, Asturias, Spain
- Department
of Design and Engineering, Bournemouth University, Poole BH12 5BB, United Kingdom
| | - A. Hernández Battez
- Department
of Construction and Manufacturing Engineering, University of Oviedo, Asturias, Spain
- Department
of Design and Engineering, Bournemouth University, Poole BH12 5BB, United Kingdom
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Vahlquist A, Blockhuys S, Steijlen P, van Rossem K, Didona B, Blanco D, Traupe H. Oral liarozole in the treatment of patients with moderate/severe lamellar ichthyosis: results of a randomized, double-blind, multinational, placebo-controlled phase II/III trial. Br J Dermatol 2015; 170:173-81. [PMID: 24102348 PMCID: PMC4232915 DOI: 10.1111/bjd.12626] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2013] [Indexed: 01/22/2023]
Abstract
Summary
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Affiliation(s)
- A Vahlquist
- Department of Medical Sciences, Uppsala University, SE-751 85, Uppsala, Sweden
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Beltrán N, Carriles F, Álvarez B, Blanco D, Rico J. Characterization of Factors Influencing Dimensional and Geometric Errors in PolyJet Manufacturing of Cylindrical Features. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.proeng.2015.12.480] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Arca G, García-Alix A, Arnáez J, Blanco D. [Sedation in term or near-term newborns with hypoxic-ischemic encephalopathy who require therapeutic hypothermia]. An Pediatr (Barc) 2014; 82:52-3. [PMID: 24907864 DOI: 10.1016/j.anpedi.2014.04.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 04/23/2014] [Accepted: 04/29/2014] [Indexed: 10/25/2022] Open
Affiliation(s)
- G Arca
- Servicio de Neonatología, Sede Maternidad, Hospital Clínic, Barcelona, España.
| | - A García-Alix
- Servicio de Neonatología, Sede Maternidad, Hospital Clínic, Barcelona, España
| | - J Arnáez
- Servicio de Neonatología, Sede Maternidad, Hospital Clínic, Barcelona, España
| | - D Blanco
- Servicio de Neonatología, Sede Maternidad, Hospital Clínic, Barcelona, España
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Blanco D, Rivero MA, Vázquez JM, Arencibia A. Sectional anatomic and computed tomography features of the nasal and oral cavities of the one-humped camel (Camelus dromedarius). Anat Histol Embryol 2014; 44:50-8. [PMID: 24527752 DOI: 10.1111/ahe.12100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 12/17/2013] [Indexed: 11/30/2022]
Abstract
The purpose of the study was to provide a description of normal cross-sectional anatomy of the camel nasal and oral cavities using computed tomography (CT) and macroscopic cross-sections. Transverse images of two isolated camel cadaver heads were obtained by an axial CT equipment. Computed tomography scans were processed with a detailed algorithm using nasal and soft tissue windows settings and compared with the corresponding frozen cross-sections of the heads, to assist in the accurate identification of nasal and oral structures. In our study, nasal window provided excellent anatomic details of nasal conchae, bones and teeth; however, other soft tissue components of the nasal and oral cavities are better differentiated using a soft tissue window. These CT images are intended to be a useful anatomic reference in the interpretation for clinical CT imaging studies of the nasal and oral cavities in dromedary camels.
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Affiliation(s)
- D Blanco
- Department of Morphology, Veterinary Faculty, Las Palmas de Gran Canaria University, Arucas, 35416, Spain
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Martínez-Biarge M, Blanco D, García-Alix A, Salas S. [Follow-up of newborns with hypoxic-ischaemic encephalopathy]. An Pediatr (Barc) 2013; 81:52.e1-14. [PMID: 24290154 DOI: 10.1016/j.anpedi.2013.06.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 06/26/2013] [Accepted: 06/27/2013] [Indexed: 11/19/2022] Open
Abstract
Hypothermia treatment for newborn infants with hypoxic-ischemic encephalopathy reduces the number of neonates who die or have permanent neurological deficits. Although this therapy is now standard of care, neonatal hypoxic-ischaemic encephalopathy still has a significant impact on the child's neurodevelopment and quality of life. Infants with hypoxic-ischaemic encephalopathy should be enrolled in multidisciplinary follow-up programs in order to detect impairments, to initiate early intervention, and to provide counselling and support for families. This article describes the main neurodevelopmental outcomes after term neonatal hypoxic-ischaemic encephalopathy. We offer recommendations for follow-up based on the infant's clinical condition and other prognostic indicators, mainly neonatal neuroimaging. Other aspects, such as palliative care and medico-legal issues, are also briefly discussed.
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Affiliation(s)
- M Martínez-Biarge
- Department of Paediatrics, Hammersmith Hospital, Imperial College, Londres, Reino Unido.
| | - D Blanco
- Servicio de Neonatología, Hospital Universitario Gregorio Marañón, Madrid, España
| | - A García-Alix
- Servicio de Neonatología, Hospital Sant Joan de Déu, Barcelona, España
| | - S Salas
- Servicio de Neonatología, Hospital Universitario La Paz, Madrid, España
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Cabranes C, Mangas JJ, Blanco D. SELECTION AND BIOCHEMICAL CHARACTERISATION OFSACCHAROMYCES CEREVISIAEANDKLOECKERA APICULATASTRAINS ISOLATED FROM SPANISH CIDER. Journal of the Institute of Brewing 2013. [DOI: 10.1002/j.2050-0416.1997.tb00945.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Cabranes C, Mangas JJ, Blanco D. CONTROLLED PRODUCTION OF CIDER BY INDUCTION OF ALCOHOLIC FERMENTATION AND MALOLACTIC CONVERSION. Journal of the Institute of Brewing 2013. [DOI: 10.1002/j.2050-0416.1996.tb00901.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fernández P, Blanco D, Valiño G, Hoang H, Suárez L, Mateos S. Integration of a conoscopic holography sensor on a CMM. ACTA ACUST UNITED AC 2012. [DOI: 10.1063/1.4707569] [Citation(s) in RCA: 8] [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: 11/14/2022]
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35
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Larzabal L, Nguewa PA, Pio R, Blanco D, Sanchez B, Rodríguez MJ, Pajares MJ, Catena R, Montuenga LM, Calvo A. Overexpression of TMPRSS4 in non-small cell lung cancer is associated with poor prognosis in patients with squamous histology. Br J Cancer 2011; 105:1608-14. [PMID: 22067904 PMCID: PMC3242532 DOI: 10.1038/bjc.2011.432] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Background: Mortality rates in lung cancer patients have not decreased significantly in recent years, even with the implementation of new therapeutic regimens. One of the main problems is that a large proportion of patients present local or distant metastasis at the time of diagnosis. The need for identification of novel biomarkers and therapeutic targets for a more effective management of lung cancer led us to investigate TMPRSS4, a protease reported to promote tumour growth and metastasis. Material and methods: In all, 34 lung cancer cell lines were used to evaluate the TMPRSS4 expression. Cell migration and clonogenic assays, and an in-vivo lung metastasis model were used for functional analysis of the TMPRSS4 downregulation in H358, H441 and H2170 cell lines. The TMPRSS4 expression analysis in normal and malignant lung tissue samples was performed by qPCR. Five different microarray-based publicly available expression databases were used to validate our results and to study prognosis. Results: The TMPRSS4 knock down in H358, H441 and H2170 cells resulted in a significant reduction in proliferation, clonogenic capacity and invasion. A significant (P<0.05) decrease in the lung colonisation and growth was found when mice were injected with TMPRSS4-depleated H358-derived clones, as compared with controls. Expression of TMPRSS4 showed a >30-fold increase (P<0.001) in tumours in comparison with non-malignant samples. Levels in tumours with squamous cell carcinoma (SCC) histology were found to be significantly higher (P<0.001) than those with adenocarcinoma (AC) histology, which was confirmed in data retrieved from the microarrays. Kaplan–Meier curves demonstrated that high levels of TMPRSS4 were significantly associated (P=0.017) with reduced overall survival in the patients with SCC histology, whereas no correlation was found for the AC histology. Conclusion: Our results demonstrate that TMPRSS4 has a role in the lung cancer development. The potential use of TMPRSS4 as a biomarker for lung cancer detection or as a predictor of patient's outcome warrants further investigation.
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Affiliation(s)
- L Larzabal
- Laboratory of Novel Therapeutic Targets, Division of Oncology, Center for Applied Medical Research, University of Navarra, Pamplona, Spain
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36
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Blanco D. Presente y futuro de la neuroprotección con hipotermia. An Pediatr (Barc) 2011; 75:295-7. [DOI: 10.1016/j.anpedi.2011.07.013] [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] [Received: 07/12/2011] [Revised: 07/18/2011] [Accepted: 07/18/2011] [Indexed: 11/28/2022] Open
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Blanco D, García-Alix A, Valverde E, Tenorio V, Vento M, Cabañas F. [Neuroprotection with hypothermia in the newborn with hypoxic-ischaemic encephalopathy. Standard guidelines for its clinical application]. An Pediatr (Barc) 2011; 75:341.e1-20. [PMID: 21925984 DOI: 10.1016/j.anpedi.2011.07.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 07/18/2011] [Accepted: 07/18/2011] [Indexed: 01/24/2023] Open
Abstract
Standardisation of hypothermia as a treatment for perinatal hypoxic-ischaemic encephalopathy is supported by current scientific evidence. The following document was prepared by the authors on request of the Spanish Society of Neonatology and is intended to be a guide for the proper implementation of this therapy. We discuss the difficulties that may arise when moving from the strict framework of clinical trials to clinical daily care: early recognition of clinical encephalopathy, inclusion and exclusion criteria, hypothermia during transport, type of hypothermia (selective head or systemic cooling) and side effects of therapy. The availability of hypothermia therapy has changed the prognosis of children with hypoxic-ischaemic encephalopathy and our choices of therapeutic support. In this sense, it is especially important to be aware of the changes in the predictive value of the neurological examination and the electroencephalographic recording in cooled infants. In order to improve neuroprotection with hypothermia we need earlier recognition of to recognise earlier the infants that may benefit from cooling. Biomarkers of brain injury could help us in the selection of these patients. Every single infant treated with hypothermia must be included in a follow up program in order to assess neurodevelopmental outcome.
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Affiliation(s)
- D Blanco
- Servicio de Neonatología, Hospital Universitario Gregorio Marañón, Madrid, España.
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Hevia D, Botas C, Sainz RM, Quiros I, Blanco D, Tan DX, Gomez-Cordoves C, Mayo JC. Development and validation of new methods for the determination of melatonin and its oxidative metabolites by high performance liquid chromatography and capillary electrophoresis, using multivariate optimization. J Chromatogr A 2010; 1217:1368-74. [PMID: 20079907 DOI: 10.1016/j.chroma.2009.12.070] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Revised: 12/15/2009] [Accepted: 12/22/2009] [Indexed: 11/27/2022]
Abstract
Melatonin (N-acetyl-5-metoxytriptamine, MEL) has focused a lot of attention as consequence of its multiple functions. MEL is a potent endogenous antioxidant and a free radical scavenger that reacts with several sort of radicals generating various metabolites. Two of them are N1-acetyl-N2-formyl-5-methoxykynurenine (AFMK) and N1-acetyl-5-methoxykynurenine (AMK). These compounds are important because they have also antioxidant actions as well as other important biological properties. In the present work, we develop two methods to detect and quantify these compounds (MEL, AFMK and AMK) in the same sample. For this purpose we used an experimental design, and utilized high performance liquid chromatography (HPLC-DAD) and micellar electrokinetic chromatography (MEKC) techniques with diode array detector in both of them. The limit of detection/quantification for MEL, AFMK and AMK were respectively 44/94, 18/38 and 23/51 ng mL(-1) by using HPLC and 13/44, 37/124 and 47/156 ng mL(-1) by using MEKC. This is the first time that these compounds have been separated in the same chromatogram or electroferogram. The time of analysis was faster using MEKC. Furthermore, this technique showed better resolution but HPLC offered better limit of detection and quantification for metabolites. Both methods were validated and correlation coefficients were higher than 0.999 and the range of recovery of those methods were 99.6-103.7%. Precision was evaluated as repeatability and intermediate precision with relative standard derivation <5%. When a 5 microg mL(-1) solution of these compounds were analyzed with both methods we do not observed any statistically significance differences. Moreover, we analyzed 3COHM (cyclic-3-hydroximelatonin), another known metabolite of melatonin, by using the same methods. The employment of these methods will offer a useful tool to contribute to answer the role of MEL, AFMK and AMK in biological system and both methods can be used in routine analysis for these compounds.
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Affiliation(s)
- D Hevia
- Instituto Universitario de Oncologia del Principado de Asturias, Departamento de Morfologia y Biologia Celular, Universidad de Oviedo, 33006 Oviedo, Spain
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Artaechevarria X, Pérez-Martín D, Ceresa M, de Biurrun G, Blanco D, Montuenga LM, van Ginneken B, Ortiz-de-Solorzano C, Muñoz-Barrutia A. Airway segmentation and analysis for the study of mouse models of lung disease using micro-CT. Phys Med Biol 2009; 54:7009-24. [PMID: 19887716 DOI: 10.1088/0031-9155/54/22/017] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Animal models of lung disease are gaining importance in understanding the underlying mechanisms of diseases such as emphysema and lung cancer. Micro-CT allows in vivo imaging of these models, thus permitting the study of the progression of the disease or the effect of therapeutic drugs in longitudinal studies. Automated analysis of micro-CT images can be helpful to understand the physiology of diseased lungs, especially when combined with measurements of respiratory system input impedance. In this work, we present a fast and robust murine airway segmentation and reconstruction algorithm. The algorithm is based on a propagating fast marching wavefront that, as it grows, divides the tree into segments. We devised a number of specific rules to guarantee that the front propagates only inside the airways and to avoid leaking into the parenchyma. The algorithm was tested on normal mice, a mouse model of chronic inflammation and a mouse model of emphysema. A comparison with manual segmentations of two independent observers shows that the specificity and sensitivity values of our method are comparable to the inter-observer variability, and radius measurements of the mainstem bronchi reveal significant differences between healthy and diseased mice. Combining measurements of the automatically segmented airways with the parameters of the constant phase model provides extra information on how disease affects lung function.
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Affiliation(s)
- X Artaechevarria
- Cancer Imaging Laboratory, Center for Applied Medical Research, 31008 Pamplona, Spain.
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40
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Venturini ME, Rivera CS, Gonzalez C, Blanco D. Antimicrobial activity of extracts of edible wild and cultivated mushrooms against foodborne bacterial strains. J Food Prot 2008; 71:1701-6. [PMID: 18724768 DOI: 10.4315/0362-028x-71.8.1701] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The antimicrobial activity of aqueous, methanol, hexane, and ethyl acetate extracts from edible wild and cultivated mushrooms against nine foodborne pathogenic bacterial strains (Escherichia coli O157:H7, Salmonella Enteritidis, Shigella sonnei, Vibrio parahaemolyticus, Yersinia enterocolitica, Bacillus cereus, Clostridium perfringens, Listeria monocytogenes, and Staphylococcus aureus) was screened with a disk diffusion assay. Twenty-nine of the 48 species tested had antimicrobial activity. Methanol, ethyl acetate, and aqueous extracts accounted for 92.8% of the positive assays, whereas the hexane extracts accounted for only 7.2%. Gram-positive bacteria were more sensitive than gram-negative bacteria to fungal extracts, and C. perfringens was the most sensitive microorganism. Aqueous extracts from Clitocybe geotropa and Lentinula edodes had the highest antimicrobial activity against all the bacterial strains tested.
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Affiliation(s)
- M E Venturini
- Department of Food Science and Technology, University of Zaragoza, 177 Miguel Servet, 50013 Zaragoza, Spain
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41
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Martínez García E, López MC, Izquierdo E, Blanco D. [Tracheal lesion in a patient undergoing outpatient surgery]. Rev Esp Anestesiol Reanim 2008; 55:381-383. [PMID: 18693670 DOI: 10.1016/s0034-9356(08)70600-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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43
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Gómez X, Diaz MC, Cooper M, Blanco D, Morán A, Snape CE. Study of biological stabilization processes of cattle and poultry manure by thermogravimetric analysis and (13)C NMR. Chemosphere 2007; 68:1889-97. [PMID: 17433408 DOI: 10.1016/j.chemosphere.2007.02.065] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 03/08/2006] [Revised: 02/28/2007] [Accepted: 02/28/2007] [Indexed: 05/14/2023]
Abstract
The biological stabilization process of cattle and poultry manure was studied using thermogravimetric analysis and (13)C nuclear magnetic resonance. The stabilization processes carried out were composting, anaerobic digestion and a mixed process (partly aerobic, partly anaerobic). It was observed from the analyzed samples that the biological stabilization processes reduce the volatile content of the bio-wastes and increase the degree of aromaticity. The stabilization of cattle manure by means of aerobic processes was able to further oxidize and enriched in aromatic compounds the bio-waste when compared with the digestion process. On the other hand, the stabilization of poultry manure resulted in a greater aromatization under the digestion process. Stabilized samples with a high degree of aromaticity presented a lower volatile content accompanied by a reduction in the intensity of the differential thermogravimetry peak registered under an inert atmosphere, indicative of the thermal decomposition of the organic matter. The thermal decomposition of all the analyzed materials (fresh and stabilized samples) commenced at around 200 degrees C but for the digested poultry manure, which decomposition initiated close to 250 degrees C. All stabilized samples yielded a lower degree of volatilization to that one observed in fresh samples.
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Affiliation(s)
- X Gómez
- Chemical Engineering Department, University of León, IRENA-ESTIA, Avda. de Portugal 41, León 24071, Spain
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Affiliation(s)
- D. Blanco
- a Department of Physical and Analytical Chemistry , Faculty of Chemistry , University of Oviedo , Oviedo , Spain
| | - I. Herrero
- a Department of Physical and Analytical Chemistry , Faculty of Chemistry , University of Oviedo , Oviedo , Spain
| | - L. Laviana
- a Department of Physical and Analytical Chemistry , Faculty of Chemistry , University of Oviedo , Oviedo , Spain
| | - M. D. Gutie`rrez
- b Department of Physical and Analytical Chemistry , Faculty of Chemistry , University of Oviedo , Oviedo , Spain
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Affiliation(s)
- D. Blanco
- a Departamento de Química Física y Analítica , Universidad de Oviedo , 33006, Oviedo, Spain
| | - M. E. Quintanilla
- a Departamento de Química Física y Analítica , Universidad de Oviedo , 33006, Oviedo, Spain
| | - J. J. Mangas
- b Centro de Investigación Aplicada y Tecnología Agroalimentaria , 333000, Villaviciosa, Asturias, Spain
| | - M. D. Gutierrez
- a Departamento de Química Física y Analítica , Universidad de Oviedo , 33006, Oviedo, Spain
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46
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Affiliation(s)
- D. Blanco
- a Departamentode Química Física y , Analítica Universidadde Oviedo , 33007, Oviedo, Spain
| | - M. B. Llaneza
- a Departamentode Química Física y , Analítica Universidadde Oviedo , 33007, Oviedo, Spain
| | - M. D. Gutierrez
- a Departamentode Química Física y , Analítica Universidadde Oviedo , 33007, Oviedo, Spain
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47
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Losa R, Sierra MI, Fernández A, Blanco D, Buesa JM. Determination of thiamine and its phosphorylated forms in human plasma, erythrocytes and urine by HPLC and fluorescence detection: a preliminary study on cancer patients. J Pharm Biomed Anal 2005; 37:1025-9. [PMID: 15862682 DOI: 10.1016/j.jpba.2004.08.038] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2004] [Revised: 08/23/2004] [Accepted: 08/23/2004] [Indexed: 11/18/2022]
Abstract
In man, neurotoxicity associated to ifosfamide treatment can be reversed by intravenous thiamine administration. Trying to explain this clinical finding, we decided to study possible changes in thiamine availability and activation in patients exposed to ifosfamide. Free thiamine and its phosphate esters levels were measured in plasma, erythrocytes and urine by an ion-pair HPLC method with pre-column derivatization, which allowed separation of the fluorescent compounds in less than 10 min. The method was validated by linearity, sensitivity and reproducibility studies, whose values met the demands for bioanalytical assays. This method was applied to assess thiamine status in cancer patients exposed to ifosfamide therapy for advanced disease.
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Affiliation(s)
- R Losa
- Laboratory of Medical Oncology, Instituto Universitario de Oncología del Principado de Asturias, Hospital Central de Asturias, C/Julian Clavería s/n, 33006 Oviedo, Asturias, Spain.
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Losa R, Sierra M, Guardado C, Fernández A, Gión M, Blanco D, Buesa J. Development and validation of an ion pair HPLC method for gemcitabine and 2′,2′-difluoro-2′-deoxyuridine determination. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.10.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Laviana L, Mangas C, Fernández-Marí F, Bayod M, Blanco D. Determination and in-process control of zolpidem synthesis by high-performance liquid chromatography. J Pharm Biomed Anal 2004; 36:925-8. [PMID: 15533692 DOI: 10.1016/j.jpba.2004.08.025] [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] [Subscribe] [Scholar Register] [Received: 03/02/2004] [Revised: 08/27/2004] [Accepted: 08/28/2004] [Indexed: 11/25/2022]
Abstract
A high-performance liquid chromatographic assay with diode-array detection has been developed for the in-process control of zolpidem synthesis and for the analysis of the drug and its synthetic intermediates. The separation uses a 4.6mm i.d. reversed-phase Kromasil C(18) (150 mm) column, 5 microm particle size with a gradient elution mode of acetonitrile and 0.02 M NH(4)OAc (adjusted to pH 8.0) as the mobile phase (flow rate 1.0 mlmin(-1)). The analysis is performed in 12 min. The method is simple, rapid and highly specific.
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Affiliation(s)
- L Laviana
- Department of Physical and Analytical Chemistry, University of Oviedo, Química Física y Analítica, Julian Clavería, Oviedo, Spain
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Losa R, Sierra MI, Blay P, Blanco D, Buesa JM. Determination of Gemcitabine Triphosphate in Peripheral Blood Mononuclear Cells by Reverse-Phase HPLC. Chromatographia 2004. [DOI: 10.1365/s10337-004-0210-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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