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Leighton PLA, Barragán-Hernández W, López-Campos Ó, Segura J, Aalhus JL, Prieto N. Effects of in-the-bag dry-ageing on meat quality, palatability and volatile compounds of low-value beef cuts. Meat Sci 2023; 202:109219. [PMID: 37172551 DOI: 10.1016/j.meatsci.2023.109219] [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: 11/09/2022] [Revised: 03/25/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023]
Abstract
This study evaluated the effects of in-the-bag dry-ageing (BDA) (21 and 42 d) on meat quality, palatability, and volatile compounds of clod heart, brisket, and flat iron cuts from steers. In all cuts, BDA increased moisture losses (P < 0.05), but this did not reduce the juiciness of 21 d BDA versus wet-aged (WA) steaks. In clod heart, BDA increased overall tenderness at 21 d compared to 21 d WA (P < 0.01). Regardless of ageing period, BDA of clod heart increased beef flavour and salty taste and decreased sour-dairy and stale/cardboard flavours and concentrations of volatile compounds derived from lipid oxidation compared to WA (P < 0.05). In brisket, BDA increased salty taste and fatty aroma and reduced bloody/serumy flavour, whereas decreased beef and buttery flavours and intensified some unpleasant aromas/flavours (P < 0.05) for both ageing periods. The BDA of flat iron increased several undesirable aromas/flavours and decreased sweet taste and beef and buttery flavours (P < 0.05), regardless of ageing period. Overall, BDA for 42 d decreased meat quality and palatability and increased concentrations of volatile compounds from lipid oxidation, especially in flat iron cuts. Value could be recovered by customizing BDA periods by cut.
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Affiliation(s)
- P L A Leighton
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada
| | - W Barragán-Hernández
- Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA), El Nus Research, Centre, San Roque, Antioquía, Colombia
| | - Ó López-Campos
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada
| | - J Segura
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada
| | - J L Aalhus
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada
| | - N Prieto
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
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2
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Martínez‐García B, Dyson S, Segura J, Ayats A, Cutts EE, Gutierrez‐Escribano P, Aragón L, Roca J. Condensin pinches a short negatively supercoiled DNA loop during each round of ATP usage. EMBO J 2023; 42:e111913. [PMID: 36533296 PMCID: PMC9890231 DOI: 10.15252/embj.2022111913] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 10/23/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Condensin, an SMC (structural maintenance of chromosomes) protein complex, extrudes DNA loops using an ATP-dependent mechanism that remains to be elucidated. Here, we show how condensin activity alters the topology of the interacting DNA. High condensin concentrations restrain positive DNA supercoils. However, in experimental conditions of DNA loop extrusion, condensin restrains negative supercoils. Namely, following ATP-mediated loading onto DNA, each condensin complex constrains a DNA linking number difference (∆Lk) of -0.4. This ∆Lk increases to -0.8 during ATP binding and resets to -0.4 upon ATP hydrolysis. These changes in DNA topology do not involve DNA unwinding, do not spread outside the condensin-DNA complex and can occur in the absence of the condensin subunit Ycg1. These findings indicate that during ATP binding, a short DNA domain delimited by condensin is pinched into a negatively supercoiled loop. We propose that this loop is the feeding segment of DNA that is subsequently merged to enlarge an extruding loop. Such a "pinch and merge" mechanism implies that two DNA-binding sites produce the feeding loop, while a third site, plausibly involving Ycg1, might anchor the extruding loop.
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Affiliation(s)
| | - Sílvia Dyson
- DNA Topology LabMolecular Biology Institute of Barcelona (IBMB), CSICBarcelonaSpain
| | - Joana Segura
- DNA Topology LabMolecular Biology Institute of Barcelona (IBMB), CSICBarcelonaSpain
| | - Alba Ayats
- DNA Topology LabMolecular Biology Institute of Barcelona (IBMB), CSICBarcelonaSpain
| | - Erin E Cutts
- DNA Motors GroupMRC London Institute of Medical Sciences (LMS)LondonUK
| | | | - Luís Aragón
- DNA Motors GroupMRC London Institute of Medical Sciences (LMS)LondonUK
| | - Joaquim Roca
- DNA Topology LabMolecular Biology Institute of Barcelona (IBMB), CSICBarcelonaSpain
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3
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López-Campos Ó, Chabot B, Segura J, Leighton P, Scott H, Zawadski S, Barragán-Hernández W, Prieto N. Effect of a novel amperage-based electrical stimulation system on meat quality characteristics of finished steers. Meat Sci 2022. [DOI: 10.1016/j.meatsci.2022.108915] [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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Santiago-Hernandez A, Martin-Lorenzo M, Gomez-Serrano M, Lopez J, Martinez P, Vazquez J, Ruiz-Hurtado G, Barderas M, Segura J, Ruilope L, Alvarez-Llamas G. Early cardiorenal risk is molecularly evidenced in hypertensive subjects within the normoalbuminuria condition. Novel glycotargets for cardiovascular risk stratification. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Roca J, Dyson S, Segura J, Valdés A, Martínez-García B. Keeping intracellular DNA untangled: A new role for condensin? Bioessays 2021; 44:e2100187. [PMID: 34761394 DOI: 10.1002/bies.202100187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 08/06/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 12/25/2022]
Abstract
The DNA-passage activity of topoisomerase II accidentally produces DNA knots and interlinks within and between chromatin fibers. Fortunately, these unwanted DNA entanglements are actively removed by some mechanism. Here we present an outline on DNA knot formation and discuss recent studies that have investigated how intracellular DNA knots are removed. First, although topoisomerase II is able to minimize DNA entanglements in vitro to below equilibrium values, it is unclear whether such capacity performs equally in vivo in chromatinized DNA. Second, DNA supercoiling could bias topoisomerase II to untangle the DNA. However, experimental evidence indicates that transcriptional supercoiling of intracellular DNA boosts knot formation. Last, cohesin and condensin could tighten DNA entanglements via DNA loop extrusion (LE) and force their dissolution by topoisomerase II. Recent observations indicate that condensin activity promotes the removal of DNA knots during interphase and mitosis. This activity might facilitate the spatial organization and dynamics of chromatin.
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Affiliation(s)
- Joaquim Roca
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona, Spain
| | - Silvia Dyson
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona, Spain
| | - Joana Segura
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona, Spain
| | - Antonio Valdés
- Julius Maximilian University of Würzburg, Würzburg, Germany
| | - Belén Martínez-García
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona, Spain
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Gijón-Conde T, Rubio E, Gorostidi M, Vinyoles E, Armario P, Rodilla E, Segura J, Divisón-Garrote JA, García-Donaire JA, Molinero A, Ruilope LM. 2021 Spanish Society of Hypertension position statement about telemedicine. Hipertens Riesgo Vasc 2021; 38:186-196. [PMID: 33888438 PMCID: PMC8054212 DOI: 10.1016/j.hipert.2021.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 03/29/2021] [Indexed: 12/01/2022]
Abstract
The pandemic caused by coronavirus SARS-CoV-2 (COVID-19) has forced, in many cases, to replace face-to-face consultation with the telematic consultation, in order to reduce the risk of contagion associated with the presence of patients in health centres. This change may represent an opportunity for a different and more effective communication between professionals and patients, allowing better accessibility to medical care and more systematic and comprehensive approach to patients with hypertension and cardiovascular risk. However, organisational tools are needed to facilitate communication between patients and professionals, specifically with the exchange of clinical data by remote monitoring of variables associated with hypertension and cardiovascular risk (blood pressure, weight, height, blood tests…), and allow monitoring of adherence to treatments, lifestyles and risk factors. It would be desirable for this to be carried out by multidisciplinary teams, both from primary care, hospital and community pharmacy, with an adequate coordination of care. This document of the Spanish Society of Hypertension (SEH-LELHA) tries to give the keys to improve the quality of care of telematic consultations of patients with hypertension and cardiovascular risk, provide basic criteria of telematic or face to face attention and systematise their content. Likewise, the follow-up criteria are proposed by the different professionals.
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Affiliation(s)
- T Gijón-Conde
- Centro de Salud Cerro del Aire, Departamento de Medicina, Universidad Autónoma Madrid/IdiPAZ y CIBERESP, Majadahonda, Madrid, Spain.
| | - E Rubio
- Servicio de Nefrología, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, Spain.
| | - M Gorostidi
- Servicio de Nefrología, Hospital Universitario Central de Asturias, RedinRen, Universidad de Oviedo, Oviedo, Spain
| | - E Vinyoles
- Centre d'Atenció Primària La Mina, Departamento de Medicina, Universidad de Barcelona, Barcelona, Spain
| | - P Armario
- Área Atención Integrada de Riesgo Vascular, Departamento de Medicina Interna, Hospital Moisès Broggi Sant Joan Despi, Universidad de Barcelona, Sant Joan Despí, Barcelona, Spain
| | - E Rodilla
- Servicio de Medicina Interna, Hospital Universitario de Sagunto, Universidad Cardenal Herrera-CEU, Sagunto, Valencia, Spain
| | - J Segura
- Instituto de Investigación i+12, Hospital Universitario 12 de Octubre, Madrid, Spain; Unidad de Hipertensión, Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - J A Divisón-Garrote
- Centro de Salud de Casas Ibáñez, Universidad Católica San Antonio, Casas Ibáñez, Albacete, Spain
| | | | - A Molinero
- Sociedad Española de Farmacia Comunitaria (SEFAC), Spain
| | - L M Ruilope
- Instituto de Investigación i+12, Hospital Universitario 12 de Octubre, Madrid, Spain; Unidad de Hipertensión, Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, Spain; Escuela de Estudios de Doctorado e Investigación, Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, Spain
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Segura J, Aalhus J, Prieto N, Larsen I, Dugan M, López-Campos Ó. Development and validation of the Canadian retail cut beef yield grades. Can J Anim Sci 2021. [DOI: 10.1139/cjas-2020-0035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The United States Department of Agriculture (USDA) system has five retail cut yield (RCY) classes, whereas the former Canadian system had three total lean yield (TLY) classes. A total of 720 beef carcasses were used to develop a modified grade ruler, harmonizing the Canadian grades into five classes. Beef carcasses (n = 750) from three Canadian federally inspected facilities were graded using both USDA and Canadian (harmonized ruler) systems for external validation. Agreement between the USDA-RCY and the Canadian TLY was high (R2 = 0.80). The validation between the harmonized ruler and the USDA-RCY showed a standard deviation of the difference of 1.32 and a coefficient of concordance of 0.83.
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Affiliation(s)
- J. Segura
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
| | - J.L. Aalhus
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
| | - N. Prieto
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
| | - I.L. Larsen
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
| | - M.E.R. Dugan
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
| | - Ó López-Campos
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada
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8
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Dyson S, Segura J, Martínez‐García B, Valdés A, Roca J. Condensin minimizes topoisomerase II-mediated entanglements of DNA in vivo. EMBO J 2021; 40:e105393. [PMID: 33155682 PMCID: PMC7780148 DOI: 10.15252/embj.2020105393] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 09/10/2020] [Accepted: 10/07/2020] [Indexed: 12/24/2022] Open
Abstract
The juxtaposition of intracellular DNA segments, together with the DNA-passage activity of topoisomerase II, leads to the formation of DNA knots and interlinks, which jeopardize chromatin structure and gene expression. Recent studies in budding yeast have shown that some mechanism minimizes the knotting probability of intracellular DNA. Here, we tested whether this is achieved via the intrinsic capacity of topoisomerase II for simplifying the equilibrium topology of DNA; or whether it is mediated by SMC (structural maintenance of chromosomes) protein complexes like condensin or cohesin, whose capacity to extrude DNA loops could enforce dissolution of DNA knots by topoisomerase II. We show that the low knotting probability of DNA does not depend on the simplification capacity of topoisomerase II nor on the activities of cohesin or Smc5/6 complexes. However, inactivation of condensin increases the occurrence of DNA knots throughout the cell cycle. These results suggest an in vivo role for the DNA loop extrusion activity of condensin and may explain why condensin disruption produces a variety of alterations in interphase chromatin, in addition to persistent sister chromatid interlinks in mitotic chromatin.
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Grants
- BFU2015-67007-P Ministerio de Economía, Industria y Competitividad, Gobierno de España (MINECO)
- PID2019-109482GB-I00 Ministerio de Economía, Industria y Competitividad, Gobierno de España (MINECO)
- BES-2016-077806 Ministerio de Economía, Industria y Competitividad, Gobierno de España (MINECO)
- BES-2012-061167 Ministerio de Economía, Industria y Competitividad, Gobierno de España (MINECO)
- BES-2015-071597 Ministerio de Economía, Industria y Competitividad, Gobierno de España (MINECO)
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Affiliation(s)
- Sílvia Dyson
- Molecular Biology Institute of Barcelona (IBMB)Spanish National Research Council (CSIC)BarcelonaSpain
| | - Joana Segura
- Molecular Biology Institute of Barcelona (IBMB)Spanish National Research Council (CSIC)BarcelonaSpain
| | - Belén Martínez‐García
- Molecular Biology Institute of Barcelona (IBMB)Spanish National Research Council (CSIC)BarcelonaSpain
| | - Antonio Valdés
- Molecular Biology Institute of Barcelona (IBMB)Spanish National Research Council (CSIC)BarcelonaSpain
| | - Joaquim Roca
- Molecular Biology Institute of Barcelona (IBMB)Spanish National Research Council (CSIC)BarcelonaSpain
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Rey A, Menoyo D, Segura J, López-Bote C, Calvo L. Combination of dietary glycaemic index and fasting time prior to slaughter as strategy to modify quality of pork. Meat Sci 2020; 161:108013. [DOI: 10.1016/j.meatsci.2019.108013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 10/31/2019] [Accepted: 11/14/2019] [Indexed: 10/25/2022]
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Valdés A, Coronel L, Martínez-García B, Segura J, Dyson S, Díaz-Ingelmo O, Micheletti C, Roca J. Transcriptional supercoiling boosts topoisomerase II-mediated knotting of intracellular DNA. Nucleic Acids Res 2020; 47:6946-6955. [PMID: 31165864 PMCID: PMC6649788 DOI: 10.1093/nar/gkz491] [Citation(s) in RCA: 16] [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] [Received: 03/19/2019] [Revised: 05/09/2019] [Accepted: 05/22/2019] [Indexed: 12/04/2022] Open
Abstract
Recent studies have revealed that the DNA cross-inversion mechanism of topoisomerase II (topo II) not only removes DNA supercoils and DNA replication intertwines, but also produces small amounts of DNA knots within the clusters of nucleosomes that conform to eukaryotic chromatin. Here, we examine how transcriptional supercoiling of intracellular DNA affects the occurrence of these knots. We show that although (−) supercoiling does not change the basal DNA knotting probability, (+) supercoiling of DNA generated in front of the transcribing complexes increases DNA knot formation over 25-fold. The increase of topo II-mediated DNA knotting occurs both upon accumulation of (+) supercoiling in topoisomerase-deficient cells and during normal transcriptional supercoiling of DNA in TOP1 TOP2 cells. We also show that the high knotting probability (Pkn ≥ 0.5) of (+) supercoiled DNA reflects a 5-fold volume compaction of the nucleosomal fibers in vivo. Our findings indicate that topo II-mediated DNA knotting could be inherent to transcriptional supercoiling of DNA and other chromatin condensation processes and establish, therefore, a new crucial role of topoisomerase II in resetting the knotting–unknotting homeostasis of DNA during chromatin dynamics.
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Affiliation(s)
- Antonio Valdés
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Lucia Coronel
- Scuola Internazionale Superiore di Studi Avanzati (SISSA), 34136 Trieste, Italy
| | - Belén Martínez-García
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Joana Segura
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Sílvia Dyson
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Ofelia Díaz-Ingelmo
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Cristian Micheletti
- Scuola Internazionale Superiore di Studi Avanzati (SISSA), 34136 Trieste, Italy
| | - Joaquim Roca
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
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Valdés A, Martínez-García B, Segura J, Dyson S, Díaz-Ingelmo O, Roca J. Quantitative disclosure of DNA knot chirality by high-resolution 2D-gel electrophoresis. Nucleic Acids Res 2019; 47:e29. [PMID: 30649468 PMCID: PMC6412111 DOI: 10.1093/nar/gkz015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/24/2018] [Accepted: 01/07/2019] [Indexed: 11/13/2022] Open
Abstract
The characterization of knots formed in duplex DNA has proved useful to infer biophysical properties and the spatial trajectory of DNA, both in free solution and across its macromolecular interactions. Since knotting, like supercoiling, makes DNA molecules more compact, DNA knot probability and knot complexity can be assessed by the electrophoretic velocity of nicked DNA circles. However, the chirality of the DNA knots has to be determined by visualizing the sign of their DNA crossings by means of electron microscopy. This procedure, which requires purifying the knotted DNA molecules and coating them with protein, is semi-quantitative and it is impracticable in biological samples that contain little amount of knotted DNA forms. Here, we took advantage of an earlier observation that the two chiral forms of a trefoil knot acquire slightly different electrophoretic velocity when the DNA is supercoiled. We introduced a second gel dimension to reveal these chiral forms in DNA mixtures that are largely unknotted. The result is a high-resolution 2D-gel electrophoresis procedure that quantitatively discerns the fractions of positive- and negative-noded trefoil knots formed in vitro and in vivo systems. This development in DNA knot analysis may uncover valuable information toward disclosing the architecture of DNA ensembles.
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Affiliation(s)
- Antonio Valdés
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Belén Martínez-García
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Joana Segura
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Sílvia Dyson
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Ofelia Díaz-Ingelmo
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Joaquim Roca
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
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Romero M, Hidalgo F, Ojeda S, Segura J, Suarez De Lezo J, Mazuelos F, Luque A, Lostalo A, Fernandez J, Pan M. P5753Jailed pressure wire to assess the side branch result for bifurcation lesions treated by provisional stenting strategy: iFR as a new index. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0693] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Purpose
To analyze the feasibility and efficacy of the jailed pressure wire technique for bifurcation lesions treated by provisional stenting strategy and to assess the physiological side branch (SB) result using instantaneous wave free ratio (iFR).
Methods
Between June 2017 and December 2018, 50 patients who presented a bifurcation lesion considered appropriate for provisional stenting strategy were included in the study. Pressure wire was passed to side branch before treatment. Main vessel (MV) and side branch (SB) was predilated at the operator criteria. iFR determination was obtained in the SB baseline and after MV stenting (leaving the pressure wire jailed). Afterwards, the wire was removed to MV ostium to discard the possibility of drift. SB postdilation was performed if SB iFR was less than 0,89 (according to vessel thresholds established in clinical trials), evaluating the result by a new iFR determination.
Results
The mean age was 64±10 years. Sixteen patients (32%) had diabetes. Clinical presentation was stable angina in 26 patients (52%), non-STEMI in 19 patients (38%) and STEMI (non culprit lesion) in 5 patients (10%). The most frequent bifurcation type according to Medina classifications was 1,1,0 (21 patients, 42%). Seventeen patients (34%) had a true bifurcation lesion. The MV and SB reference diameter was 3,0±0,5 mm and 2,25±0,5 mm respectively. Most of the bifurcations were located at the left anterior descending artery/diagonal branch (27 bifurcations, 54%). Ten patients (20%) presented a distal left main bifurcation. Baseline SB iFR was 0,78±0,2. Under continuous SB iFR monitoring MV stenting was performed by trapping the pressure wire. After MV stenting, the SB iFR changed to 0,90±0,1. We confirmed the presence of drift in 5 patients (10%). In these cases, recalibration of the wire and SB rewiring was performed in 4 cases. In the remaining patient, rewiring was not possible even using specific coronary wires.
According to SB IFR, postdilation was necessary in 14 patients (28%). Final SB iFR was 0,94±0,03. A second stent was not necessary in any patient because final SB iFR was higher than 0.89 in all cases. We observed discordance between angiographic and physiological result in 17 cases (34%). All the wires could be removed. Forty wires (80%) were microscopically analyzed. Some grade of microscopic damage was found in 32 wires (80%), all of them distal to the pressure sensor. However, only one of these wires (2%) presented severe damage, and no case of fracture was observed.
After a mean follow up time of 10±6 months only one patient (2%) presented a major cardiac adverse event (acute coronary syndrome due to voluntary cessation of dual antiplatelet therapy).
Conclusions
The use of jailed pressure wire to monitor SB results for bifurcations treated by provisional stenting seems to be safe. The iFR index seems to provide new physiological information about the significance of the SB stenosis.
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Affiliation(s)
- M Romero
- Reina Sofia Hospital, Cordoba, Spain
| | - F Hidalgo
- Reina Sofia Hospital, Cordoba, Spain
| | - S Ojeda
- Reina Sofia Hospital, Cordoba, Spain
| | - J Segura
- Reina Sofia Hospital, Cordoba, Spain
| | | | | | - A Luque
- Reina Sofia Hospital, Cordoba, Spain
| | - A Lostalo
- Reina Sofia Hospital, Cordoba, Spain
| | | | - M Pan
- Reina Sofia Hospital, Cordoba, Spain
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Valdés A, Segura J, Dyson S, Martínez-García B, Roca J. DNA knots occur in intracellular chromatin. Nucleic Acids Res 2019; 46:650-660. [PMID: 29149297 PMCID: PMC5778459 DOI: 10.1093/nar/gkx1137] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [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] [Received: 08/25/2017] [Accepted: 10/28/2017] [Indexed: 01/12/2023] Open
Abstract
In vivo DNA molecules are narrowly folded within chromatin fibers and self-interacting chromatin domains. Therefore, intra-molecular DNA entanglements (knots) might occur via DNA strand passage activity of topoisomerase II. Here, we assessed the presence of such DNA knots in a variety of yeast circular minichromosomes. We found that small steady state fractions of DNA knots are common in intracellular chromatin. These knots occur irrespective of DNA replication and cell proliferation, though their abundance is reduced during DNA transcription. We found also that in vivo DNA knotting probability does not scale proportionately with chromatin length: it reaches a value of ∼0.025 in domains of ∼20 nucleosomes but tends to level off in longer chromatin fibers. These figures suggest that, while high flexibility of nucleosomal fibers and clustering of nearby nucleosomes facilitate DNA knotting locally, some mechanism minimizes the scaling of DNA knot formation throughout intracellular chromatin. We postulate that regulation of topoisomerase II activity and the fractal architecture of chromatin might be crucial to prevent a potentially massive and harmful self-entanglement of DNA molecules in vivo.
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Affiliation(s)
- Antonio Valdés
- Molecular Biology Institute of Barcelona (IBMB); Spanish National Research Council (CSIC); Barcelona 08028; Spain
| | - Joana Segura
- Molecular Biology Institute of Barcelona (IBMB); Spanish National Research Council (CSIC); Barcelona 08028; Spain
| | - Sílvia Dyson
- Molecular Biology Institute of Barcelona (IBMB); Spanish National Research Council (CSIC); Barcelona 08028; Spain
| | - Belén Martínez-García
- Molecular Biology Institute of Barcelona (IBMB); Spanish National Research Council (CSIC); Barcelona 08028; Spain
| | - Joaquim Roca
- Molecular Biology Institute of Barcelona (IBMB); Spanish National Research Council (CSIC); Barcelona 08028; Spain
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Gijón-Conde T, Gorostidi M, Banegas JR, de la Sierra A, Segura J, Vinyoles E, Divisón-Garrote JA, Ruilope LM. [Position statement on ambulatory blood pressure monitoring (ABPM) by the Spanish Society of Hypertension (2019)]. Hipertens Riesgo Vasc 2019; 36:199-212. [PMID: 31178410 DOI: 10.1016/j.hipert.2019.05.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 04/21/2019] [Accepted: 05/17/2019] [Indexed: 11/19/2022]
Abstract
Conventional blood pressure (BP) measurement in clinical practice is the most used procedure for the diagnosis and treatment of hypertension (HT), but is subject to considerable inaccuracies due to, on the one hand, the inherent variability of the BP itself and, on the other hand biases arising from the measurement technique and conditions, Some studies have demonstrated the prognosis superiority in the development of cardiovascular disease using ambulatory blood pressure monitoring (ABPM). It can also detect "white coat" hypertension, avoiding over-diagnosis and over-treatment in many cases, as well detecting of masked hypertension, avoiding under-detection and under-treatment. ABPM is recognised in the diagnosis and management of HT in most of international guidelines on hypertension. The present document, taking the recommendations of the European Society of Hypertension as a reference, aims to review the more recent evidence on ABPM, and to serve as guidelines for health professionals in their clinical practice and to encourage ABPM use in the diagnosis and follow-up of hypertensive subjects. Requirements, procedure, and clinical indications for using ABPM are provided. An analysis is also made of the main contributions of ABPM in the diagnosis of "white coat" and masked HT phenotypes, short term BP variability patterns, its use in high risk and resistant hypertension, as well as its the role in special population groups like children, pregnancy and elderly. Finally, some aspects about the current situation of the Spanish ABPM Registry and future perspectives in research and potential ABPM generalisation in clinical practice are also discussed.
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Affiliation(s)
- T Gijón-Conde
- Centro de Salud Universitario Cerro del Aire, Majadahonda, Madrid, España; Departamento de Medicina Preventiva y Salud Pública, Universidad Autónoma Madrid/IdiPAZ y CIBERESP, Madrid, España.
| | - M Gorostidi
- Servicio de Nefrología, Hospital Universitario Central de Asturias, RedinRen, Universidad de Oviedo, Oviedo, Asturias, España.
| | - J R Banegas
- Departamento de Medicina Preventiva y Salud Pública, Universidad Autónoma Madrid/IdiPAZ y CIBERESP, Madrid, España
| | - A de la Sierra
- Departamento de Medicina Interna, Hospital Mutua Terrassa, Universidad de Barcelona, Terrassa, Barcelona, España
| | - J Segura
- Instituto de Investigación i+12, Hospital Universitario 12 de Octubre, Madrid, España; Unidad de Hipertensión, Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, España
| | - E Vinyoles
- Centre d' Atenció Primària La Mina, Departamento de Medicina, Universidad de Barcelona, Barcelona, España
| | - J A Divisón-Garrote
- Centro de Salud de Casas Ibáñez, Albacete, Universidad Católica San Antonio, Murcia, España
| | - L M Ruilope
- Departamento de Medicina Preventiva y Salud Pública, Universidad Autónoma Madrid/IdiPAZ y CIBERESP, Madrid, España; Instituto de Investigación i+12, Hospital Universitario 12 de Octubre, Madrid, España; Escuela de Estudios de Doctorado e Investigación, Universidad Europea de Madrid, Madrid, España
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Sorzano COS, Jiménez A, Mota J, Vilas JL, Maluenda D, Martínez M, Ramírez-Aportela E, Majtner T, Segura J, Sánchez-García R, Rancel Y, del Caño L, Conesa P, Melero R, Jonic S, Vargas J, Cazals F, Freyberg Z, Krieger J, Bahar I, Marabini R, Carazo JM. Survey of the analysis of continuous conformational variability of biological macromolecules by electron microscopy. Acta Crystallogr F Struct Biol Commun 2019; 75:19-32. [PMID: 30605122 PMCID: PMC6317454 DOI: 10.1107/s2053230x18015108] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [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: 05/30/2018] [Accepted: 10/26/2018] [Indexed: 11/10/2022] Open
Abstract
Single-particle analysis by electron microscopy is a well established technique for analyzing the three-dimensional structures of biological macromolecules. Besides its ability to produce high-resolution structures, it also provides insights into the dynamic behavior of the structures by elucidating their conformational variability. Here, the different image-processing methods currently available to study continuous conformational changes are reviewed.
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Affiliation(s)
| | - A. Jiménez
- National Center of Biotechnology (CSIC), Spain
| | - J. Mota
- National Center of Biotechnology (CSIC), Spain
| | - J. L. Vilas
- National Center of Biotechnology (CSIC), Spain
| | - D. Maluenda
- National Center of Biotechnology (CSIC), Spain
| | - M. Martínez
- National Center of Biotechnology (CSIC), Spain
| | | | - T. Majtner
- National Center of Biotechnology (CSIC), Spain
| | - J. Segura
- National Center of Biotechnology (CSIC), Spain
| | | | - Y. Rancel
- National Center of Biotechnology (CSIC), Spain
| | - L. del Caño
- National Center of Biotechnology (CSIC), Spain
| | - P. Conesa
- National Center of Biotechnology (CSIC), Spain
| | - R. Melero
- National Center of Biotechnology (CSIC), Spain
| | - S. Jonic
- Sorbonne Université, UMR CNRS 7590, Muséum National d’Histoire Naturelle, IRD, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, IMPMC, Paris, France
| | | | - F. Cazals
- Inria Sophia Antipolis – Méditerranée, France
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Romero M, Ojeda S, Hidalgo F, Suarez De Lezo J, Mazuelos F, Segura J, Pavlovic DJ, Fernandez A, Luque A, Gonzalez R, Lostalo A, Martin E, Pan M. P5466Impact of the repositionable Evolut R CoreValve on the need for permanent pacemaker after transcatheter aortic valve implantation in patients with severe aortic stenosis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5466] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Romero
- Reina Sofia University Hospital, Cordoba, Spain
| | - S Ojeda
- Reina Sofia University Hospital, Cordoba, Spain
| | - F Hidalgo
- Reina Sofia University Hospital, Cordoba, Spain
| | | | - F Mazuelos
- Reina Sofia University Hospital, Cordoba, Spain
| | - J Segura
- Reina Sofia University Hospital, Cordoba, Spain
| | | | - A Fernandez
- Reina Sofia University Hospital, Cordoba, Spain
| | - A Luque
- Reina Sofia University Hospital, Cordoba, Spain
| | - R Gonzalez
- Reina Sofia University Hospital, Cordoba, Spain
| | - A Lostalo
- Reina Sofia University Hospital, Cordoba, Spain
| | - E Martin
- Reina Sofia University Hospital, Cordoba, Spain
| | - M Pan
- Reina Sofia University Hospital, Cordoba, Spain
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17
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Gijón-Conde T, Gorostidi M, Camafort M, Abad-Cardiel M, Martín-Rioboo E, Morales-Olivas F, Vinyoles E, Armario P, Banegas JR, Coca A, de la Sierra A, Martell-Claros N, Redón J, Ruilope LM, Segura J. [Spanish Society of Hypertension position statement on the 2017 ACC/AHA hypertension guidelines]. Hipertens Riesgo Vasc 2018; 35:S1889-1837(18)30033-3. [PMID: 29699926 DOI: 10.1016/j.hipert.2018.04.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [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: 04/03/2018] [Accepted: 04/05/2018] [Indexed: 01/14/2023]
Abstract
The American College of Cardiology (ACC) and the American Heart Association (AHA) have recently published their guidelines for the prevention, detection, evaluation, and management of hypertension in adults. The most controversial issue is the classification threshold at 130/80mmHg, which will allow a large number of patients to be diagnosed as hypertensive who were previously considered normotensive. Blood pressure (BP) is considered normal (<120mmHg systolic and <80mmHg diastolic), elevated (120-129 and <80mmHg), stage 1 (130-139 or 80-89mmHg), and stage 2 (≥140 or ≥90mmHg). Out-of-office BP measurements are recommended to confirm the diagnosis of hypertension and for titration of BP-lowering medication. In management, cardiovascular risk would be determinant since those with grade 1 hypertension and an estimated 10-year risk of atherosclerotic cardiovascular disease ≥10%, and those with cardiovascular disease, chronic kidney disease and/or diabetes will require pharmacological treatment, the rest being susceptible to non-pharmacological treatment up to the 140/90mmHg threshold. These recommendations would allow patients with level 1 hypertension and high atherosclerotic cardiovascular disease to benefit from pharmacological therapies and all patients could also benefit from improved non-pharmacological therapies. However, this approach should be cautious because inadequate BP measurement and/or lack of systematic atherosclerotic cardiovascular disease calculation could lead to overestimation in diagnosing hypertension and to overtreatment. Guidelines are recommendations, not impositions, and the management of hypertension should be individualized, based on clinical decisions, preferences of the patients, and an adequate balance between benefits and risks.
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Affiliation(s)
- T Gijón-Conde
- Centro de Salud Universitario Cerro del Aire, Majadahonda (Madrid), España; Departamento de Medicina Preventiva y Salud Pública, Universidad Autónoma Madrid/IdiPAZ y CIBERESP, Madrid, España.
| | - M Gorostidi
- Servicio de Nefrología, Hospital Universitario Central de Asturias, RedinRen, Universidad de Oviedo, Oviedo (Asturias), España
| | - M Camafort
- Unidad de Hipertensión y Riesgo Cardiovascular, Servicio de Medicina Interna, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universidad de Barcelona, Barcelona, España
| | - M Abad-Cardiel
- Unidad de Hipertensión, Área de Prevención Cardiovascular, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, España
| | - E Martín-Rioboo
- Centro de Salud Poniente, Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Universidad de Córdoba, Córdoba, España
| | - F Morales-Olivas
- Departamento de Farmacología, Facultad de Medicina y Odontología, Universidad de Valencia, Valencia, España
| | - E Vinyoles
- Centre d'Atenció Primària La Mina, Departamento de Medicina, Universidad de Barcelona, Barcelona, España
| | - P Armario
- Área Atención Integrada de Riesgo Vascular, Departamento de Medicina Interna, Hospital Moisès Broggi Sant Joan Despi, Universidad de Barcelona, Barcelona, España
| | - J R Banegas
- Departamento de Medicina Preventiva y Salud Pública, Universidad Autónoma Madrid/IdiPAZ y CIBERESP, Madrid, España
| | - A Coca
- Unidad de Hipertensión y Riesgo Cardiovascular, Servicio de Medicina Interna, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universidad de Barcelona, Barcelona, España
| | - A de la Sierra
- Departamento de Medicina Interna, Hospital Mutua Terrassa, Universidad de Barcelona, Terrassa (Barcelona), España
| | - N Martell-Claros
- Unidad de Hipertensión, Área de Prevención Cardiovascular, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, España
| | - J Redón
- Instituto de Investigación INCLIVA, Universidad de Valencia, Valencia, CIBERObn, Valencia, España; Instituto de Salud Carlos III, Madrid, España
| | - L M Ruilope
- Departamento de Medicina Preventiva y Salud Pública, Universidad Autónoma Madrid/IdiPAZ y CIBERESP, Madrid, España; Instituto de Investigación i+12, Hospital Universitario 12 de Octubre, Madrid, España; Escuela de Estudios de Doctorado e Investigación, Universidad Europea de Madrid, Madrid, España
| | - J Segura
- Instituto de Investigación i+12, Hospital Universitario 12 de Octubre, Madrid, España; Unidad de Hipertensión, Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, España
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18
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Toro Cebada R, Blasco-Turrion S, Gonzalez P, Morales F, Lopez-Granados A, Segura J, Mesa-Rubio D, Cano-Calabria L, Fernandez-Armenta J, Rosa-Longobardo F, Izquierdo I, Garcia A, Mangas A, Llorente-Cortes V, De Gonzalo-Calvo D. P1586Plasma microRNAs for identification of patients with Lamin A/C gene mutation causing familial dilated cardiomyopathy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ferro P, Ventura R, Pérez-Mañá C, Farré M, Segura J. Corrigendum to "Genetic and protein biomarkers in blood for the improved detection of GH abuse" [J. Pharm. Biomed. Anal. 128 (2016) 111-118, doi: 10.1016/j.jpba.2016.05.022.]. J Pharm Biomed Anal 2017; 134:385. [PMID: 27876384 DOI: 10.1016/j.jpba.2016.11.004] [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: 09/14/2016] [Revised: 11/02/2016] [Accepted: 11/05/2016] [Indexed: 10/20/2022]
Affiliation(s)
- P Ferro
- Bioanalysis Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - R Ventura
- Bioanalysis Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain; Department of Experimental and Health Sciences, Pompeu Fabra University (UPF), Barcelona Biomedical Research Park, Barcelona, Spain
| | - C Pérez-Mañá
- Integrative Pharmacology and Systems Neuroscience Research Group, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain; Department of Pharmacology, Therapeutics and Toxicology, Universitat Autònoma de Barcelona (UAB), Cerdanyola Del Vallés (Bellaterra), Spain; Clinical Pharmacology Unit, Hospital Universitari Germans Trias i Pujol-IGTP, Badalona, Spain
| | - M Farré
- Integrative Pharmacology and Systems Neuroscience Research Group, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain; Department of Pharmacology, Therapeutics and Toxicology, Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallés (Bellaterra), Spain; Clinical Pharmacology Unit, Hospital Universitari Germans Trias i Pujol-IGTP, Badalona, Spain; Bioanalysis Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain; Department of Experimental and Health Sciences, Pompeu Fabra University (UPF), Barcelona Biomedical Research Park, Barcelona, Spain
| | - J Segura
- Bioanalysis Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain; Department of Experimental and Health Sciences, Pompeu Fabra University (UPF), Barcelona Biomedical Research Park, Barcelona, Spain.
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20
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Ferro P, Ventura R, Pérez-Mañá C, Farré M, Segura J. Evaluation of fibronectin 1 in one dried blood spot and in urine after rhGH treatment. Drug Test Anal 2016; 9:1011-1016. [DOI: 10.1002/dta.2108] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 10/04/2016] [Accepted: 10/04/2016] [Indexed: 12/14/2022]
Affiliation(s)
- P. Ferro
- Bioanalysis Research Group, Neuroscience Research Program; IMIM (Hospital del Mar Medical Research Institute); Barcelona Spain
| | - R. Ventura
- Bioanalysis Research Group, Neuroscience Research Program; IMIM (Hospital del Mar Medical Research Institute); Barcelona Spain
- Department of Experimental and Health Sciences; Pompeu Fabra University, Barcelona Biomedical Research Park; Barcelona Spain
| | - C. Pérez-Mañá
- Integrative Pharmacology and Systems Neuroscience Research Group; IMIM (Hospital del Mar Medical Research Institute); Barcelona Spain
- Department of Pharmacology, Therapeutics and Toxicology; Universitat Autònoma de Barcelona-UAB, Cerdanyola del Vallés; Bellaterra Spain
| | - M. Farré
- Integrative Pharmacology and Systems Neuroscience Research Group; IMIM (Hospital del Mar Medical Research Institute); Barcelona Spain
- Department of Pharmacology, Therapeutics and Toxicology; Universitat Autònoma de Barcelona-UAB, Cerdanyola del Vallés; Bellaterra Spain
- Clinical Pharmacology Unit; Hospital Universitari Germans Trias i Pujol-IGTP; Badalona Spain
| | - J. Segura
- Bioanalysis Research Group, Neuroscience Research Program; IMIM (Hospital del Mar Medical Research Institute); Barcelona Spain
- Department of Experimental and Health Sciences; Pompeu Fabra University, Barcelona Biomedical Research Park; Barcelona Spain
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21
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Prado JC, Ruilope LM, Segura J. [Benefits of spironolactone as the optimal treatment for drug resistant hypertension. Pathway-2 trial review]. Hipertens Riesgo Vasc 2016; 33:150-154. [PMID: 27363610 DOI: 10.1016/j.hipert.2016.05.003] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/25/2016] [Accepted: 05/27/2016] [Indexed: 11/25/2022]
Abstract
Pathway-2 is the first randomised, double-blind and crossover trial that compares spironolactone as a fourth drug with alfa-blocker, beta-blocker and placebo. This study shows that spironolactone is the drug with more possibilities of success for the management of patients with difficult-to-treat hypertension in patients with a combination of three drugs and poor control. The results validate the widespread treatment with mineralocorticoid receptor antagonists in resistant hypertension.
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Affiliation(s)
- J C Prado
- Unidad de Hipertensión, Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, España.
| | - L M Ruilope
- Instituto de Investigación i+12, Hospital Universitario 12 de Octubre, Madrid, España
| | - J Segura
- Unidad de Hipertensión, Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, España
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de la Cuesta F, Baldan-Martin M, Mourino-Alvarez L, Sastre-Oliva T, Alvarez-Llamas G, Gonzalez-Calero L, Ruiz-Hurtado G, Segura J, Vivanco F, Ruilope LM, Barderas MG. [Cardiovascular risk study in patients with renin-angiotensin system blockade by means of the proteone of circulating extracellular vesicles]. Hipertens Riesgo Vasc 2016; 33:21-7. [PMID: 26826536 DOI: 10.1016/j.hipert.2015.07.003] [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: 05/22/2015] [Revised: 07/14/2015] [Accepted: 07/18/2015] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Extracellular vesicles (EVs) are released to the bloodstream by certain cell types due to transport, activation and cell death processes. Blood count of EVs from platelet and endothelial origin has been proved to be a cardiovascular risk biomarker. Thus, EVs proteome might reflect the underlying cellular processes in hypertensive patients with albuminuria. MATERIAL AND METHODS Protein content of circulating EVs was analyzed by liquid chromatography coupled to mass spectrometry. EVs were isolated by an ultracentrifugation protocol optimized in order to avoid contamination by blood plasma proteins. Purity of the isolated fraction was verified by electronic and confocal microscopy, and by flow cytometry. RESULTS We hereby show a method to isolate circulating EVs from hypertensive patients with/without albuminuria with high yield and purity. Besides, we provide a reference proteome of the EVs of these patients, composed of 2,463 proteins, and prove that the proteins carried by these vesicles are associated with crucial processes involved in the inherent cardiovascular risk. CONCLUSION The proteome of circulating EVs is an interesting source of indicators in the evaluation of cardiovascular risk in hypertensive patients with renin-angiotensin system blockage.
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Affiliation(s)
- F de la Cuesta
- Laboratorio de Fisiopatología Vascular, Hospital Nacional de Parapléjicos (HNP), Servicio de Salud de Castilla la Mancha (SESCAM), Toledo, España.
| | - M Baldan-Martin
- Laboratorio de Fisiopatología Vascular, Hospital Nacional de Parapléjicos (HNP), Servicio de Salud de Castilla la Mancha (SESCAM), Toledo, España
| | - L Mourino-Alvarez
- Laboratorio de Fisiopatología Vascular, Hospital Nacional de Parapléjicos (HNP), Servicio de Salud de Castilla la Mancha (SESCAM), Toledo, España
| | - T Sastre-Oliva
- Laboratorio de Fisiopatología Vascular, Hospital Nacional de Parapléjicos (HNP), Servicio de Salud de Castilla la Mancha (SESCAM), Toledo, España
| | - G Alvarez-Llamas
- Departamento de Inmunología, IIS-Fundación Jiménez Díaz, Madrid, España
| | - L Gonzalez-Calero
- Departamento de Inmunología, IIS-Fundación Jiménez Díaz, Madrid, España
| | - G Ruiz-Hurtado
- Departamento de Riesgo Cardiovascular e Hipertensión, IIS-Hospital 12 de Octubre, Madrid, España
| | - J Segura
- Unidad de Hipertensión, Hospital 12 de Octubre, Madrid, España
| | - F Vivanco
- Departamento de Inmunología, IIS-Fundación Jiménez Díaz, Madrid, España
| | - L M Ruilope
- Departamento de Riesgo Cardiovascular e Hipertensión, IIS-Hospital 12 de Octubre, Madrid, España
| | - M G Barderas
- Laboratorio de Fisiopatología Vascular, Hospital Nacional de Parapléjicos (HNP), Servicio de Salud de Castilla la Mancha (SESCAM), Toledo, España
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Ferro P, Krotov G, Zvereva I, Rodchenkov G, Segura J. Structure-activity relationship for peptídic growth hormone secretagogues. Drug Test Anal 2016; 9:87-95. [PMID: 26811125 DOI: 10.1002/dta.1947] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [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: 08/03/2015] [Revised: 11/05/2015] [Accepted: 12/10/2015] [Indexed: 11/11/2022]
Abstract
Growth hormone releasing peptides (GHRPs) could be widely used by cheating athletes because they produce growth hormone (GH) secretion, so may generate an ergogenic effect in the body. Knowledge of the essential amino acids needed in GHRP structure for interaction with the target biological receptor GHSR1a, the absorption through different administration routes, and the maintenance of pharmacological activity of potential biotransformation products may help in the fight against their abuse in sport. Several GHRPs and truncated analogues with the common core Ala-Trp-(D-Phe)-Lys have been studied with a radio-competitive assay for the GHSR1a receptor against the radioactive natural ligand ghrelin. Relevant chemical modifications influencing the activity for positions 1, 2, 3, and 7 based on the structure aa-aa-aa-Ala-Trp-(D-Phe)-Lys have been obtained. To test in vivo the applicability of the activities observed, the receptor assay activity in samples from excretion studies performed after nasal administration of GHRP-1, GHRP-2, GHRP-6, Hexarelin, and Ipamorelin was confirmed. Overall results obtained allow to infer structure-activity information for those GHRPs and to detect GHSR1a binding (intact GHRPs plus active metabolites) in excreted urines. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- P Ferro
- Bioanalysis Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - G Krotov
- Antidoping Centre, Moscow, Russia
| | | | | | - J Segura
- Bioanalysis Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.,Department of Experimental and Health Sciences, Pompeu Fabra University, Barcelona, Spain
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Díaz-Ingelmo O, Martínez-García B, Segura J, Valdés A, Roca J. DNA Topology and Global Architecture of Point Centromeres. Cell Rep 2015; 13:667-677. [PMID: 26489472 DOI: 10.1016/j.celrep.2015.09.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 08/08/2015] [Accepted: 09/14/2015] [Indexed: 12/21/2022] Open
Abstract
DNA is wrapped in a left-handed fashion around histone octasomes containing the centromeric histone H3 variant CENP-A. However, DNA topology studies have suggested that DNA is wrapped in a right-handed manner around the CENP-A nucleosome that occupies the yeast point centromere. Here, we determine the DNA linking number difference (ΔLk) stabilized by the yeast centromere and the contribution of the centromere determining elements (CDEI, CDEII, and CDEIII). We show that the intrinsic architecture of the yeast centromere stabilizes +0.6 units of ΔLk. This topology depends on the integrity of CDEII and CDEIII, but it is independent of cbf1 binding to CDEI and of the variable length of CDEII. These findings suggest that the interaction of the CBF3 complex with CDEIII and a distal CDEII segment configures a right-handed DNA loop that excludes CDEI. This loop is then occupied by a CENP-A histone complex, which does not have to be inherently right-handed.
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Affiliation(s)
- Ofelia Díaz-Ingelmo
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Belén Martínez-García
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Joana Segura
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Antonio Valdés
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain
| | - Joaquim Roca
- Molecular Biology Institute of Barcelona (IBMB), Spanish National Research Council (CSIC), Barcelona 08028, Spain.
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Ferro P, Gutiérrez-Gallego R, Bosch J, Farré M, Segura J. Fit-for-Purpose Radio Receptor Assay for the Determination of Growth Hormone Secretagogues in Urine. ACTA ACUST UNITED AC 2015; 20:1268-76. [DOI: 10.1177/1087057115594590] [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: 04/16/2015] [Accepted: 06/14/2015] [Indexed: 12/27/2022]
Abstract
The everlasting pharmacological development is continuously producing new substances with potential doping abuse. Among these, secretagogues are very prone to misuse by athletes for their properties to release growth hormone (GH) and some limitations in the actual analytical methods to detect them. In this paper, an in-depth study on the key variables of the radio receptor method previously developed by our group is performed and a fit-for-purpose protocol is established. Thus, this sensitive and robust screening method is proposed as an intelligent and preventive antidoping method to detect new growth hormone secretagogues (GHSs) in exceptional suspicious urine samples obtained from athletes and will support the current detection methods based on liquid chromatography–mass spectrometry (LC-MS).
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Affiliation(s)
- P. Ferro
- Bioanalysis Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - R. Gutiérrez-Gallego
- Department of Experimental and Health Sciences, Pompeu Fabra University, Barcelona Biomedical Research Park, Barcelona, Spain
- Anapharm Biotech, Barcelona, Spain
| | - J. Bosch
- Bioanalysis Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - M. Farré
- Human Pharmacology and Neurosciences Research Group, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
- Department of Pharmacology, Therapeutics and Toxicology, Universitat Autònoma de Barcelona–UAB, Cerdanyola del Vallés (Bellaterra), Spain
| | - J. Segura
- Bioanalysis Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
- Department of Experimental and Health Sciences, Pompeu Fabra University, Barcelona Biomedical Research Park, Barcelona, Spain
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Oliveras A, Segura J, Suarez C, García-Ortiz L, Abad-Cardiel M, Vigil L, Gómez-Marcos MA, Sans Atxer L, Martell-Claros N, Ruilope LM, de la Sierra A. Modification over time of pulse wave velocity parallel to changes in aortic BP, as well as in 24-h ambulatory brachial BP. J Hum Hypertens 2015; 30:186-90. [PMID: 26108366 DOI: 10.1038/jhh.2015.62] [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] [Received: 03/22/2015] [Revised: 05/04/2015] [Accepted: 05/12/2015] [Indexed: 01/22/2023]
Abstract
Arterial stiffness as assessed by carotid-femoral pulse wave velocity (cfPWV) is a marker of preclinical organ damage and a predictor of cardiovascular outcomes, independently of blood pressure (BP). However, limited evidence exists on the association between long-term variation (Δ) on aortic BP (aoBP) and ΔcfPWV. We aimed to evaluate the relationship of ΔBP with ΔcfPWV over time, as assessed by office and 24-h ambulatory peripheral BP, and aoBP. AoBP and cfPWV were evaluated in 209 hypertensive patients with either diabetes or metabolic syndrome by applanation tonometry (Sphygmocor) at baseline(b) and at 12 months of follow-up(fu). Peripheral BP was also determined by using validated oscillometric devices (office(o)-BP) and on an outpatient basis by using a validated (Spacelabs-90207) device (24-h ambulatory BP). ΔcfPWV over time was calculated as follows: ΔcfPWV=[(cfPWVfu-cfPWVb)/cfPWVb] × 100. ΔBP over time resulted from the same formula applied to BP values obtained with the three different measurement techniques. Correlations (Spearman 'Rho') between ΔBP and ΔcfPWV were calculated. Mean age was 62 years, 39% were female and 80% had type 2 diabetes. Baseline office brachial BP (mm Hg) was 143±20/82±12. Follow-up (12 months later) office brachial BP (mm Hg) was 136±20/79±12. ΔcfPWV correlated with ΔoSBP (Rho=0.212; P=0.002), Δ24-h SBP (Rho=0.254; P<0.001), Δdaytime SBP (Rho=0.232; P=0.001), Δnighttime SBP (Rho=0.320; P<0.001) and ΔaoSBP (Rho=0.320; P<0.001). A multiple linear regression analysis included the following independent variables: ΔoSBP, Δ24-h SBP, Δdaytime SBP, Δnighttime SBP and ΔaoSBP. ΔcfPWV was independently associated with Δ24-h SBP (β-coefficient=0.195; P=0.012) and ΔaoSBP (β-coefficient= 0.185; P=0.018). We conclude that changes in both 24-h SBP and aoSBP more accurately reflect changes in arterial stiffness than do office BP measurements.
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Affiliation(s)
- A Oliveras
- Hypertension Unit, Department of Nephrology, Hospital Universitari del Mar, Barcelona, Spain.,IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - J Segura
- Hypertension Unit, Hospital 12 de Octubre, Madrid, Spain
| | - C Suarez
- Department of Internal Medicine, Hospital La Princesa, Madrid, Spain
| | - L García-Ortiz
- Health Center La Alamedilla, IBSAL (Institute of Biomedical Research of Salamanca), Salamanca, Spain
| | - M Abad-Cardiel
- Hypertension Unit, Department of Internal Medicine, Hospital Clínico San Carlos, Madrid, Spain
| | - L Vigil
- Hospital de Móstoles, Madrid, Spain
| | - M A Gómez-Marcos
- Health Center La Alamedilla, IBSAL (Institute of Biomedical Research of Salamanca), Salamanca, Spain
| | - L Sans Atxer
- Hypertension Unit, Department of Nephrology, Hospital Universitari del Mar, Barcelona, Spain.,IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - N Martell-Claros
- Hypertension Unit, Department of Internal Medicine, Hospital Clínico San Carlos, Madrid, Spain
| | - L M Ruilope
- Hypertension Unit, Hospital 12 de Octubre, Madrid, Spain
| | - A de la Sierra
- Department of Internal Medicine, Hospital Mútua Terrassa, University of Barcelona, Barcelona, Spain
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Ruiz-López N, Segura J, Menoyo D, Cambero MI, López-Bote CJ. Comparison of analytical techniques for the determination of the positional distribution of fatty acids in triacylglycerols. Relationship with pig fat melting point and hardness. Grasas y Aceites 2015. [DOI: 10.3989/gya.1073142] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Rey AI, Segura J, Olivares A, Cerisuelo A, Piñeiro C, López-Bote CJ. Effect of micellized natural (D-α-tocopherol) vs. synthetic (DL-α-tocopheryl acetate) vitamin E supplementation given to turkeys on oxidative status and breast meat quality characteristics. Poult Sci 2015; 94:1259-69. [PMID: 25825790 DOI: 10.3382/ps/pev091] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2015] [Indexed: 12/20/2022] Open
Abstract
This study evaluates the effect of vitamin E supplementation source (micellized natural vs. the synthetic form) and dosage (40, 80, or 120 mg/kg) on α-tocopherol concentration in plasma and muscle, antioxidant capacity, and breast meat quality in turkeys. Three hundred female turkeys were randomly selected at an average live weight 63.2 g±0.5 and distributed into 7 groups. One group (control) was fed a standard diet without vitamin E supplementation and the other 6 were given mixed diets supplemented with the natural (d-α-tocopherol) or synthetic (dl-α-tocopheryl acetate) form of vitamin E in 3 dosages (40, 80, or 120 mg/kg). Following 11 wk feeding, results showed that performance parameters were not modified either by source or dosage of vitamin E supplementation to the turkeys. Plasma and muscle α-tocopherol at d 9 of refrigerated storage were higher when turkeys were supplemented with the natural form at higher doses. Losses in the concentration of α-tocopherol in meat between the beginning and the end of the 9 d refrigerated storage were greater in the groups supplemented with the synthetic form of vitamin E compared to those receiving the natural supplementation. The relationship between plasma α-tocopherol and the Trolox equivalent antioxidant capacity followed a different trend depending on the vitamin E source. Intramuscular fat was not significantly affected by the vitamin E source supplementation; however the slope of the linear regression equation was lower for the natural form than for the synthetic form. Turkeys given the natural form had higher C18:1n-9 but lower C15:1, C17:1, C20:5n-3, and C22:6n-3 in breast muscle. Meat samples from turkeys supplemented with natural vitamin E had higher deoxymyoglobin at d 3, 6, and 9 and lower metmyoglobin at d 9 of refrigerated storage than those receiving the synthetic form. Dietary supplementation with medium doses (80 mg/kg) micellized d-α-tocopherol is an interesting feeding strategy for ensuring antioxidant status and improving meat quality.
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Affiliation(s)
- A I Rey
- Dpto. Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Avda. Puerta de Hierro s/n., 28040 Madrid, Spain
| | - J Segura
- Dpto. Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Avda. Puerta de Hierro s/n., 28040 Madrid, Spain
| | - A Olivares
- Dpto. Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Avda. Puerta de Hierro s/n., 28040 Madrid, Spain
| | - A Cerisuelo
- Instituto Valenciano de Investigaciones Agrarias, Centro de Investigación y Tecnología Animal. Polígono Industrial La Esperanza, 100. Apartado 187. 12400 Segorbe, Spain
| | - C Piñeiro
- PigChamp Pro Europa, Carretera de San Rafael, 68, 40006 Segovia
| | - C J López-Bote
- Dpto. Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Avda. Puerta de Hierro s/n., 28040 Madrid, Spain
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Segura J, Escudero R, Romero de Ávila MD, Cambero MI, López-Bote CJ. Effect of fatty acid composition and positional distribution within the triglyceride on selected physical properties of dry-cured ham subcutaneous fat. Meat Sci 2015; 103:90-5. [PMID: 25644667 DOI: 10.1016/j.meatsci.2015.01.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [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: 05/28/2014] [Revised: 01/08/2015] [Accepted: 01/20/2015] [Indexed: 11/19/2022]
Abstract
Analysis of fatty acid (FA) positional distribution within the triglyceride (TG) and selected physical properties of dry-cured ham subcutaneous fat (SF) were carried out. The slip point (SP) of the SF was related to the concentration and positional distribution of FA. When C16:0 was in Sn-2, the SP depended on the FA present in Sn-1,3. Hardness was related to the FA concentration in external positions of TG. A significant direct linear correlation between hardness against C18:0, SFA and average chain length (ACL) and inverse against C18:1, C18:2 and PUFA and unsaturation index (UI) in external positions was found. Adhesiveness was related to SFA, C16:0, C18:0, C18:1, MUFA, UI and ACL exclusively in Sn-2 position. A different role of FA in Sn-2 and Sn-1,3 positions on SP and texture properties of fat was found.
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Affiliation(s)
- J Segura
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - R Escudero
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - M D Romero de Ávila
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - M I Cambero
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain.
| | - C J López-Bote
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
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Segura J, Calvo L, Óvilo C, González-Bulnes A, Olivares A, Cambero MI, López-Bote CJ. Alternative method for intramuscular fat analysis using common laboratory equipment. Meat Sci 2015; 103:24-7. [PMID: 25591172 DOI: 10.1016/j.meatsci.2014.12.011] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 11/11/2014] [Accepted: 12/31/2014] [Indexed: 10/24/2022]
Abstract
A procedure to quantify intramuscular fat was developed using common inexpensive laboratory equipment. Three homogenization methods of lyophilized muscle samples (Ball-mill, Grinder and Mortar) and two extraction methods (Ball-mill or Vortex) were used in turkey meat and pork. Two-hundred mg of lyophilized and homogenized samples were accurately weighed and mixed with 1.5 mL of dichloromethane-methanol (8:2) and shaken either in a Mixer Mill (MM400, Retsch Technology) or in a Vortex. The final mixture was separated by centrifugation. Solvent was evaporated under a nitrogen stream and lipid content was gravimetrically determined. Besides, it was checked that the fatty acid profile was not altered by the protocol used. Moreover, the analysis of 4 replicas from the same sample showed different variation coefficients (16-29%) for the new procedures proposed over a wide range of IMF content. The combination of Grinder and Vortex methodologies can be proposed as a simple and inexpensive alternative to previous ones.
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Affiliation(s)
- J Segura
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - L Calvo
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain; Incarlopsa, Tarancón, Cuenca, Spain
| | - C Óvilo
- Departamento de Mejora Genética Animal, INIA, Ctra Coruña km 7.5, 28040 Madrid, Spain
| | | | - A Olivares
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - M I Cambero
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - C J López-Bote
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain.
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Pallarés JG, López-Samanes Á, Fernández-Elías VE, Aguado-Jiménez R, Ortega JF, Gómez C, Ventura R, Segura J, Mora-Rodríguez R. Pseudoephedrine and circadian rhythm interaction on neuromuscular performance. Scand J Med Sci Sports 2014; 25:e603-12. [PMID: 25515692 DOI: 10.1111/sms.12385] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2014] [Indexed: 01/04/2023]
Abstract
This study analyzed the effects of pseudoephedrine (PSE) provided at different time of day on neuromuscular performance, side effects, and violation of the current doping cut-off threshold [World Anti-Doping Agency (WADA)]. Nine resistance-trained males carried out bench press and full squat exercises against four incremental loads (25%, 50%, 75%, and 90% one repetition maximum [1RM]), in a randomized, double-blind, cross-over design. Participants ingested either 180 mg of PSE (supra-therapeutic dose) or placebo in the morning (7:00 h; AM(PLAC) and AM(PSE)) and in the afternoon (17:00 h; PM(PLAC) and PM(PSE)). PSE enhanced muscle contraction velocity against 25% and 50% 1RM loads, only when it was ingested in the mornings, and only in the full squat exercise (4.4-8.7%; P < 0.05). PSE ingestion raised urine and plasma PSE concentrations (P < 0.05) regardless of time of day; however, cathine only increased in the urine samples. PSE ingestion resulted in positive tests occurring in 11% of samples, and it rose some adverse side effects such us tachycardia and heart palpitations. Ingestion of a single dose of 180 mg of PSE results in enhanced lower body muscle contraction velocity against low and moderate loads only in the mornings. These mild performance improvements are accompanied by undesirable side effects and an 11% risk of surpassing the doping threshold.
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Affiliation(s)
- J G Pallarés
- Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain.,Genoarchitecture Group, University of Murcia, Murcia, Spain
| | - Á López-Samanes
- Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain
| | - V E Fernández-Elías
- Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain
| | - R Aguado-Jiménez
- Department of Health Sciences, Public University of Navarra, Pamplona, Spain
| | - J F Ortega
- Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain
| | - C Gómez
- Bioanalysis and Analytical Services Research Group Neurosciences Program, IMIM, Hospital del Mar Medical Research Institute, Barcelona, Spain
| | - R Ventura
- Bioanalysis and Analytical Services Research Group Neurosciences Program, IMIM, Hospital del Mar Medical Research Institute, Barcelona, Spain.,Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - J Segura
- Bioanalysis and Analytical Services Research Group Neurosciences Program, IMIM, Hospital del Mar Medical Research Institute, Barcelona, Spain.,Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - R Mora-Rodríguez
- Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain
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Gómez-Perretta CJ, Navarro EA, Segura J, Portolés M. Comment to the Letter to the Editor: Subjective Symptoms Related to GSM Radiation from Mobile Phone Base Stations: A Cross-sectional Study in Reply to the Comments by Seyed Mohammad Javad Mortazavi. J Biomed Phys Eng 2014; 4:41-42. [PMID: 25505768 PMCID: PMC4258863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 05/31/2014] [Indexed: 06/04/2023]
Affiliation(s)
| | | | | | - M Portolés
- Research Center, University Hospital La Fe, Valencia, Spain
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Raro M, Portolés T, Sancho JV, Pitarch E, Hernández F, Marcos J, Ventura R, Gómez C, Segura J, Pozo OJ. Mass spectrometric behavior of anabolic androgenic steroids using gas chromatography coupled to atmospheric pressure chemical ionization source. Part I: ionization. J Mass Spectrom 2014; 49:509-521. [PMID: 24913403 DOI: 10.1002/jms.3367] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 03/13/2014] [Accepted: 03/14/2014] [Indexed: 06/03/2023]
Abstract
The detection of anabolic androgenic steroids (AAS) is one of the most important topics in doping control analysis. Gas chromatography coupled to (tandem) mass spectrometry (GC-MS(/MS)) with electron ionization and liquid chromatography coupled to tandem mass spectrometry have been traditionally applied for this purpose. However, both approaches still have important limitations, and, therefore, detection of all AAS is currently afforded by the combination of these strategies. Alternative ionization techniques can minimize these drawbacks and help in the implementation of a single method for the detection of AAS. In the present work, a new atmospheric pressure chemical ionization (APCI) source commercialized for gas chromatography coupled to a quadrupole time-of-flight analyzer has been tested to evaluate the ionization of 60 model AAS. Underivatized and trimethylsylil (TMS)-derivatized compounds have been investigated. The use of GC-APCI-MS allowed for the ionization of all AAS assayed irrespective of their structure. The presence of water in the source as modifier promoted the formation of protonated molecules ([M+H](+)), becoming the base peak of the spectrum for the majority of studied compounds. Under these conditions, [M+H](+), [M+H-H2O](+) and [M+H-2·H2O](+) for underivatized AAS and [M+H](+), [M+H-TMSOH](+) and [M+H-2·TMSOH](+) for TMS-derivatized AAS were observed as main ions in the spectra. The formed ions preserve the intact steroid skeleton, and, therefore, they might be used as specific precursors in MS/MS-based methods. Additionally, a relationship between the relative abundance of these ions and the AAS structure has been established. This relationship might be useful in the structural elucidation of unknown metabolites.
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Affiliation(s)
- M Raro
- Research Institute for Pesticides and Water, University Jaume I, E-12071, Castellón, Spain
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Canet L, Cáliz R, Lupiañez C, Canhão H, Escudero A, Filipescu I, Segura J, Soto-Pino M, Ferrer M, García A, Romani L, Pérez-Pampin E, González-Utrilla A, Lόpez-Nevot M, Collantes E, Fonseca J, Sainz J. THU0474 Association of Il4, IL4R and IL8RB Gene Polymorphisms with the Risk of Developing Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.5176] [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: 11/03/2022]
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Banegas JR, Ruilope LM, de la Sierra A, de la Cruz JJ, Gorostidi M, Segura J, Martell N, Garcia-Puig J, Deanfield J, Williams B. High prevalence of masked uncontrolled hypertension in people with treated hypertension. Eur Heart J 2014; 35:3304-12. [DOI: 10.1093/eurheartj/ehu016] [Citation(s) in RCA: 152] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bertrand P, Grieten L, Smeets C, Verbrugge F, Mullens W, Vrolix M, Rivero-Ayerza M, Verhaert D, Vandervoort P, Tong L, Ramalli A, Tortoli P, D'hoge J, Bajraktari G, Lindqvist P, Henein M, Obremska M, Boratynska M, Kurcz J, Zysko D, Baran T, Klinger M, Darahim K, Mueller H, Carballo D, Popova N, Vallee JP, Floria M, Chistol R, Tinica G, Grecu M, Rodriguez Serrano M, Osa-Saez A, Rueda-Soriano J, Buendia-Fuentes F, Domingo-Valero D, Igual-Munoz B, Alonso-Fernandez P, Quesada-Carmona A, Miro-Palau V, Palencia-Perez M, Bech-Hanssen O, Polte C, Lagerstrand K, Janulewicz M, Gao S, Erdogan E, Akkaya M, Bacaksiz A, Tasal A, Sonmez O, Turfan M, Kul S, Vatankulu M, Uyarel H, Goktekin O, Mincu R, Magda L, Mihaila S, Florescu M, Mihalcea D, Enescu O, Chiru A, Popescu B, Tiu C, Vinereanu D, Broch K, Kunszt G, Massey R, De Marchi S, Aakhus S, Gullestad L, Urheim S, Yuan L, Feng J, Jin X, Bombardini T, Casartelli M, Simon D, Gaspari M, Procaccio F, Hasselberg N, Haugaa K, Brunet A, Kongsgaard E, Donal E, Edvardsen T, Sahin T, Yurdakul S, Cengiz B, Bozkurt A, Aytekin S, Cesana F, Spano' F, Santambrogio G, Alloni M, Vallerio P, Salvetti M, Carerj S, Gaibazzi N, Rigo F, Moreo A, Wdowiak-Okrojek K, Michalski B, Kasprzak J, Shim A, Lipiec P, Generati G, Pellegrino M, Bandera F, Donghi V, Alfonzetti E, Guazzi M, Marcun R, Stankovic I, Farkas J, Vlahovic-Stipac A, Putnikovic B, Kadivec S, Kosnik M, Neskovic A, Lainscak M, Iliuta L, Szymanski P, Lipczynska M, Klisiewicz A, Sobieszczanska-Malek M, Zielinski T, Hoffman P, Gjerdalen GF, Hisdal J, Solberg E, Andersen T, Radunovic Z, Steine K, Svanadze A, Poteshkina N, Krylova N, Mogutova P, Shim A, Kasprzak J, Szymczyk E, Wdowiak-Okrojek K, Michalski B, Stefanczyk L, Lipiec P, Benedek T, Matei C, Jako B, Suciu Z, Benedek I, Yaroshchuk NA, Kochmasheva VV, Dityatev VP, Kerbikov OB, Przewlocka-Kosmala M, Orda A, Karolko B, Mysiak A, Kosmala W, Rechcinski T, Wierzbowska-Drabik K, Lipiec P, Chmiela M, Kasprzak J, Aziz A, Hooper J, Rayasamudra S, Uppal H, Asghar O, Potluri R, Zaroui A, Mourali M, Rezine Z, Mbarki S, Jemaa M, Aloui H, Mechmeche R, Farhati A, Gripari P, Maffessanti F, Tamborini G, Muratori M, Fusini L, Vignati C, Bartorelli A, Alamanni F, Agostoni P, Pepi M, Ruiz Ortiz M, Mesa D, Delgado M, Seoane T, Carrasco F, Martin M, Mazuelos F, Suarez De Lezo Herreros De Tejada J, Romero M, Suarez De Lezo J, Brili S, Stamatopoulos I, Misailidou M, Chrisochoou C, Christoforatou E, Stefanadis C, Ruiz Ortiz M, Mesa D, Delgado M, Martin M, Seoane T, Carrasco F, Ojeda S, Segura J, Pan M, Suarez De Lezo J, Cammalleri V, Ussia G, Muscoli S, Marchei M, Sergi D, Mazzotta E, Romeo F, Igual Munoz B, Bel Minguez A, Perez Guillen M, Maceira Gonzalez A, Monmeneu Menadas J, Hernandez Acuna C, Estornell Erill J, Lopez Lereu P, Francisco Jose Valera Martinez F, Montero Argudo A, Sunbul M, Akhundova A, Sari I, Erdogan O, Mutlu B, Cacicedo A, Velasco Del Castillo S, Anton Ladislao A, Aguirre Larracoechea U, Rodriguez Sanchez I, Subinas Elorriaga A, Oria Gonzalez G, Onaindia Gandarias J, Laraudogoitia Zaldumbide E, Lekuona Goya I, Ding W, Zhao Y, Lindqvist P, Nilson J, Winter R, Holmgren A, Ruck A, Henein M, Attenhofer Jost CH, Soyka R, Oxenius A, Kretschmar O, Valsangiacomo Buechel E, Greutmann M, Weber R, Keramida K, Kouris N, Kostopoulos V, Karidas V, Damaskos D, Makavos G, Paraskevopoulos K, Olympios C, Eskesen K, Olsen N, Fritz-Hansen T, Sogaard P, Cameli M, Lisi M, Righini F, Curci V, Massoni A, Natali B, Maccherini M, Chiavarelli M, Massetti M, Mondillo S, Mabrouk Salem Omar A, Ahmed Abdel-Rahman M, Khorshid H, Rifaie O, Santoro C, Santoro A, Ippolito R, De Palma D, De Stefano F, Muscariiello R, Galderisi M, Squeri A, Censi S, Baldelli M, Grattoni C, Cremonesi A, Bosi S, Saura Espin D, Gonzalez Canovas C, Gonzalez Carrillo J, Oliva Sandoval M, Caballero Jimenez L, Espinosa Garcia M, Garcia Navarro M, Valdes Chavarri M, De La Morena Valenzuela G, Ryu S, Shin D, Son J, Choi J, Goh C, Choi J, Park J, Hong G, Sklyanna O, Yuan L, Yuan L, Planinc I, Bagadur G, Ljubas J, Baricevic Z, Skoric B, Velagic V, Bijnens B, Milicic D, Cikes M, Gospodinova M, Chamova T, Guergueltcheva V, Ivanova R, Tournev I, Denchev S, Ancona R, Comenale Pinto S, Caso P, Arenga F, Coppola M, Calabro R, Neametalla H, Boitard S, Hamdi H, Planat-Benard V, Casteilla L, Li Z, Hagege A, Mericskay M, Menasche P, Agbulut O, Merlo M, Stolfo D, Anzini M, Negri F, Pinamonti B, Barbati G, Di Lenarda A, Sinagra G, Stolfo D, Merlo M, Pinamonti B, Gigli M, Poli S, Porto A, Di Nora C, Barbati G, Di Lenarda A, Sinagra G, Coppola C, Piscopo G, Cipresso C, Rea D, Maurea C, Esposito E, Arra C, Maurea N, Nemes A, Kalapos A, Domsik P, Forster T, Voilliot D, Huttin O, Vaugrenard T, Schwartz J, Sellal JM, Aliot E, Juilliere Y, Selton-Suty C, Sanchez Millan PJ, Cabeza Lainez P, Castillo Ortiz J, Chueca Gonzalez E, Gheorghe L, Fernandez Garcia P, Herruzo Rojas M, Del Pozo Contreras R, Fernandez Garcia M, Vazquez Garcia R, Rosca M, Popescu B, Botezatu D, Calin A, Beladan C, Gurzun M, Enache R, Ginghina C, Farouk H, Al-Maimoony T, Alhadad A, El Serafi M, Abdel Ghany M, Poorzand H, Mirfeizi S, Javanbakht A, Tellatin S, Famoso G, Dassie F, Martini C, Osto E, Maffei P, Iliceto S, Tona F, Radunovic Z, Steine K, Jedrzejewska I, Braksator W, Krol W, Swiatowiec A, Sawicki J, Kostarska-Srokosz E, Dluzniewski M, Maceira Gonzalez AM, Cosin-Sales J, Diago J, Aguilar J, Ruvira J, Monmeneu J, Igual B, Lopez-Lereu M, Estornell J, Olszanecka A, Dragan A, Kawecka-Jaszcz K, Czarnecka D, Scholz F, Gaudron P, Hu K, Liu D, Florescu C, Herrmann S, Bijnens B, Ertl G, Stoerk S, Weidemann F, Krestjyaninov M, Razin V, Gimaev R, Bogdanovic Z, Burazor I, Deljanin Ilic M, Peluso D, Muraru D, Cucchini U, Mihaila S, Casablanca S, Pigatto E, Cozzi F, Punzi L, Badano L, Iliceto S, Zhdanova E, Rameev V, Safarova A, Moisseyev S, Kobalava Z, Magnino C, Omede' P, Avenatti E, Presutti D, Losano I, Moretti C, Bucca C, Gaita F, Veglio F, Milan A, Bellsham-Revell H, Bell A, Miller O, Simpson J, Hwang Y, Kim G, Jung M, Woo G, Driessen M, Leiner T, Schoof P, Breur J, Sieswerda G, Meijboom F, Bellsham-Revell H, Hayes N, Anderson D, Austin B, Razavi R, Greil G, Simpson J, Bell A, Zhao X, Xu X, Qin Y, Szmigielski CA, Styczynski G, Sobczynska M, Placha G, Kuch-Wocial A, Ikonomidis I, Voumbourakis A, Triantafyllidi H, Pavlidis G, Varoudi M, Papadakis I, Trivilou P, Paraskevaidis I, Anastasiou-Nana M, Lekakis I, Kong W, Yip J, Ling L, Milan A, Tosello F, Leone D, Bruno G, Losano I, Avenatti E, Sabia L, Veglio F, Zaborska B, Baran J, Pilichowska-Paszkiet E, Sikora-Frac M, Michalowska I, Kulakowski P, Budaj A, Mega S, Bono M, De Francesco V, Castiglione I, Ranocchi F, Casacalenda A, Goffredo C, Patti G, Di Sciascio G, Musumeci F, Kennedy M, Waterhouse D, Sheahan R, Foley D, Mcadam B, Ancona R, Comenale Pinto S, Caso P, Arenga F, Coppola M, Calabro R, Remme EW, Smedsrud MK, Hasselberg NE, Smiseth OA, Edvardsen T, Halmai L, Nemes A, Kardos A, Neubauer S, Degiovanni A, Baduena L, Dell'era G, Occhetta E, Marino P, Hotchi J, Yamada H, Nishio S, Bando M, Hayashi S, Hirata Y, Amano R, Soeki T, Wakatsuki T, Sata M, Lamia B, Molano L, Viacroze C, Cuvelier A, Muir J, Lipczynska M, Piotr Szymanski P, Anna Klisiewicz A, Lukasz Mazurkiewicz L, Piotr Hoffman P, Van 'T Sant J, Wijers S, Ter Horst I, Leenders G, Cramer M, Doevendans P, Meine M, Hatam N, Goetzenich A, Aljalloud A, Mischke K, Hoffmann R, Autschbach R, Sikora-Frac M, Zaborska B, Maciejewski P, Bednarz B, Budaj A, Evangelista A, Torromeo C, Pandian N, Nardinocchi P, Varano V, Schiariti M, Teresi L, Puddu P, Storve S, Dalen H, Snare S, Haugen B, Torp H, Fehri W, Mahfoudhi H, Mezni F, Annabi M, Taamallah K, Dahmani R, Haggui A, Hajlaoui N, Lahidheb D, Haouala H, Colombo A, Carminati M, Maffessanti F, Gripari P, Pepi M, Lang R, Caiani E, Walker J, Abadi S, Agmon Y, Carasso S, Aronson D, Mutlak D, Lessick J, Saxena A, Ramakrishnan S, Juneja R, Ljubas J, Reskovic Luksic V, Matasic R, Pezo Nikolic B, Lovric D, Separovic Hanzevacki J, Quattrone A, Zito C, Alongi G, Vizzari G, Bitto A, De Caridi G, Greco M, Tripodi R, Pizzino G, Carerj S, Ibrahimi P, Jashari F, Johansson E, Gronlund C, Bajraktari G, Wester P, Henein M, Kosmala W, Marwick T, Souza JRM, Zacharias LGT, Geloneze B, Pareja JC, Chaim A, Nadruz WJ, Coelho OR, Apostolovic S, Stanojevic D, Jankovic-Tomasevic R, Salinger-Martinovic S, Djordjevic-Radojkovic D, Pavlovic M, Tahirovic E, Musial-Bright L, Lainscak M, Duengen H, Filipiak D, Kasprzak J, Lipiec P. Poster session Wednesday 11 December all day display: 11/12/2013, 09:30-16:00 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gómez C, Pozo OJ, Garrostas L, Segura J, Ventura R. A new sulphate metabolite as a long-term marker of metandienone misuse. Steroids 2013; 78:1245-53. [PMID: 24055830 DOI: 10.1016/j.steroids.2013.09.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 08/12/2013] [Accepted: 09/07/2013] [Indexed: 10/26/2022]
Abstract
Metandienone is one of the most frequently detected anabolic androgenic steroids in sports drug testing. Metandienone misuse is commonly detected by monitoring different metabolites excreted free or conjugated with glucuronic acid using gas chromatography mass spectrometry (GC-MS) and liquid chromatography tandem mass spectrometry (LC-MS/MS) after hydrolysis with β-glucuronidase and liquid-liquid extraction. It is known that several metabolites are the result of the formation of sulphate conjugates in C17, which are converted to their 17-epimers in urine. Therefore, sulphation is an important phase II metabolic pathway of metandienone that has not been comprehensively studied. The aim of this work was to evaluate the sulphate fraction of metandienone metabolism by LC-MS/MS. Seven sulphate metabolites were detected after the analysis of excretion study samples by applying different neutral loss scan, precursor ion scan and SRM methods. One of the metabolites (M1) was identified and characterised by GC-MS/MS and LC-MS/MS as 18-nor-17β-hydroxymethyl-17α-methylandrost-1,4,13-triene-3-one sulphate. M1 could be detected up to 26 days after the administration of a single dose of metandienone (5 mg), thus improving the period in which the misuse can be reported with respect to the last long-term metandienone metabolite described (18-nor-17β-hydroxymethyl-17α-methylandrost-1,4,13-triene-3-one excreted in the glucuronide fraction).
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Affiliation(s)
- C Gómez
- Bioanalysis Research Group, IMIM-Hospital del Mar, Barcelona, Spain; Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Barcelona, Spain
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Segura J, Ferretti L, Ramos-Onsins S, Capilla L, Farré M, Reis F, Oliver-Bonet M, Fernández-Bellón H, Garcia F, Garcia-Caldés M, Robinson TJ, Ruiz-Herrera A. Evolution of recombination in eutherian mammals: insights into mechanisms that affect recombination rates and crossover interference. Proc Biol Sci 2013; 280:20131945. [PMID: 24068360 DOI: 10.1098/rspb.2013.1945] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [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: 11/12/2022] Open
Abstract
Recombination allows faithful chromosomal segregation during meiosis and contributes to the production of new heritable allelic variants that are essential for the maintenance of genetic diversity. Therefore, an appreciation of how this variation is created and maintained is of critical importance to our understanding of biodiversity and evolutionary change. Here, we analysed the recombination features from species representing the major eutherian taxonomic groups Afrotheria, Rodentia, Primates and Carnivora to better understand the dynamics of mammalian recombination. Our results suggest a phylogenetic component in recombination rates (RRs), which appears to be directional, strongly punctuated and subject to selection. Species that diversified earlier in the evolutionary tree have lower RRs than those from more derived phylogenetic branches. Furthermore, chromosome-specific recombination maps in distantly related taxa show that crossover interference is especially weak in the species with highest RRs detected thus far, the tiger. This is the first example of a mammalian species exhibiting such low levels of crossover interference, highlighting the uniqueness of this species and its relevance for the study of the mechanisms controlling crossover formation, distribution and resolution.
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Affiliation(s)
- Joana Segura
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina (IBB), Universitat Autònoma de Barcelona, , Barcelona, Spain, Center for Research in Agricultural Genomics CSIC-IRTA-UAB-UB, Universitat Autònoma de Barcelona, , Barcelona, Spain, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, , Barcelona, Spain, Servei de Cultius Cel·lulars (SCC, SCAC), Universitat Autònoma de Barcelona, , Barcelona, Spain, Parc Zoològic de Barcelona, Parc de la Ciutadella s/n, 08003 Barcelona, Spain, Evolutionary Genomics Group, Department of Botany and Zoology, University of Stellenbosch, , Matieland, South Africa
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Martin P, Suarez De Lezo J, Ojeda S, Novoa J, Mazuelos F, Segura J, Romero M, Pan M, Suarez De Lezo J, Medina A. Changes in bioabsorbable scaffold geometry after side branch intervention in bifurcated coronary lesions. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.1051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Suarez De Lezo J, Martin P, Ojeda S, Novoa J, Mazuelos F, Segura J, Romero M, Pan Alvarez-Osorio M, Medina A, Suarez De Lezo J. Direct bioabsorbable coronary scaffold implantation. Feasibility and immediate results. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ojeda Pineda S, Martin P, Suarez De Lezo J, Novoa J, Mazuelos Bellido F, Romero M, Segura J, Pan M, Medina A, Suarez De Lezo J. Immediate patency and short-term follow-up of coronary side branches covered by a everolimus eluting bioresorbable vascular scaffold. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.2596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mazuelos Bellido F, Segura J, Suarez De Lezo J, Pavlovic D, Martin P, Ojeda S, Romero M, Pan M, Medina A, Suarez De Lezo J. Combined coronary artery revascularization and percutaneous aortic valve implantation in elderly patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Segura J, Mazuelos Bellido F, Pavlovic D, Suarez De Lezo J, Martin P, Ojeda S, Romero M, Pan M, Medina A, Suarez De Lezo J. Does atrial fibrillation influence the clinical outcome of patients with severe aortic stenosis treated by transcatheter valve implantation? Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ros R, Cascales-Miñana B, Segura J, Anoman AD, Toujani W, Flores-Tornero M, Rosa-Tellez S, Muñoz-Bertomeu J. Serine biosynthesis by photorespiratory and non-photorespiratory pathways: an interesting interplay with unknown regulatory networks. Plant Biol (Stuttg) 2013. [PMID: 23199004 DOI: 10.1111/j.1438-8677.2012.00682.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Photorespiration is a primary metabolic pathway, which, given its energy costs, has often been viewed as a wasteful process. Despite having reached the consensus that one important function of photorespiration is the removal of toxic metabolite intermediates, other possible functions have emerged, and others could well emerge in the future. As a primary metabolic pathway, photorespiration interacts with other routes; however the nature of these interactions is not well known. One of these interacting pathways could be the biosynthesis of serine, since this amino acid is synthesised through photorespiratory and non-photorespiratory routes. At present, the exact contribution of each route to serine supply in different tissues and organs, their biological significance and how pathways are integrated and/or regulated remain unknown. Here, we review the non-photorespiratory serine biosynthetic pathways, their interactions with the photorespiratory pathway, their putative role in plants and their biotechnological interest.
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Affiliation(s)
- R Ros
- Departament de Biologia Vegetal, Facultat de Farmàcia, Universitat de València, Burjassot, Valencia, Spain.
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Rey AI, Segura J, Arandilla E, López-Bote CJ. Short- and long-term effect of oral administration of micellized natural vitamin E (D-α-tocopherol) on oxidative status in race horses under intense training. J Anim Sci 2013; 91:1277-84. [PMID: 23296828 DOI: 10.2527/jas.2012-5125] [Citation(s) in RCA: 10] [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] [Indexed: 11/13/2022] Open
Abstract
This study tested the effect of micellized vitamin E (D-α-tocopherol; 1,400 IU/d) administered 12 and 1 h orally before training for 1 d (ST-VitE) or 8 d (LT-VitE) compared with an unsupplemented control (CONTROL) on plasma α-tocopherol, thiobarbithuric acid-reactive substances (TBARS), total glutathione (GSHt), and trolox equivalent antioxidant capacity (TEAC) in 10 race horses. Different sampling times [immediately before training (BEF) and after intense training (END) or 8 h after recovery (+8h)] were investigated. Plasma α-tocopherol concentration was greater in the ST-VitE group than the CONTROL group at +8h (P < 0.05). Natural vitamin E supplementation increased plasma α-tocopherol (P < 0.001) in the LT-VitE group by approximately 1.6-fold at BEF, END, and +8h. In all groups, TBARS tended to be slightly greater (P = 0.087) immediately after training when compared with values BEF or +8h and the lowest TBARS values were observed at +8h in LT-VitE. Vitamin E supplementation did not affect the GSHt concentrations at BEF, END, or +8h. The TEAC values were modified by the vitamin E administration (P = 0.010). The greatest TEAC was found in the LT-VitE group at all sampling times and similar concentrations were reached in the ST-VitE group at +8h. The CONTROL group was not able to maintain TEAC after training (P < 0.001), indicating consumption of antioxidants (mainly vitamin E) and consequently oxidative stress because of the antioxidant system being overwhelmed by a reduced antioxidant supply. In conclusion, micellized natural vitamin E at 1,400 IU/d for 8 d efficiently increased plasma α-tocopherol concentration of race horses undergoing intense training conditions and maintained the general oxidative status.
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Affiliation(s)
- A I Rey
- Dpto. Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Avda. Puerta de Hierro s/n., 28040 Madrid, Spain.
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