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Torregrosa-Martin C, Ibarra A, Aguilar J, Ambi F, Arranz F, Arbeiter F, Bagnasco A, Becerril S, Bernardi D, Bolzon B, Botta E, Brenneis B, Cappelli M, Cara P, Castellanos J, Cosic D, De la Morena C, Diez A, Ericsson G, García A, García M, Garcinuño B, Gutiérrez J, Gutiérrez V, Jimenez-Rey D, Dezsi T, Ferreira MJ, Fiore S, Krolas W, Lorenzo R, Luque M, Maciá L, Marroncle J, Martin-Fuertes F, Marugán J, Maestre J, Meléndez C, Miccichè G, Mollá J, Moreno A, Nitti F, Núñez C, Ogando F, Pinna T, Oliver C, Podadera I, Prieto C, Prokopowicz R, Qiu Y, Rapisarda D, Regidor D, Rodríguez E, Sabogal A, Sánchez-Herranz D, Sanmarti M, Seguí L, Serikov A, Tadić T, Talarowska A, Wiacek U, Weber M, Valenzuela J, Zsakai A. Overview of IFMIF-DONES diagnostics: Requirements and techniques. Fusion Engineering and Design 2023. [DOI: 10.1016/j.fusengdes.2023.113556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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Solla P, Díaz R, Herrera J, Del Valle R, Moreno C, Almendarez M, López E, Álvarez R, Morís-de la Tassa C, Gutiérrez J. [Cognitive impairment in the elderly patient with symptomatic severe aortic stenosis. Therapeutic decisions and impact on one-year mortality]. Rev Neurol 2023; 76:127-135. [PMID: 36782348 PMCID: PMC10364070 DOI: 10.33588/rn.7604.2022300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
INTRODUCTION Interventional treatment of severe aortic stenosis includes valve replacement by surgery or transcatheter - transcatheter aortic valve implantation (TAVI). In order to make an adequate selection and to rule out patients with little/no therapeutic benefit, it is recommended to assess comorbidities, frailty and cognitive impairment. AIMS a) To determine the prevalence of cognitive impairment in older patients with severe aortic stenosis; b) to analyse its influence on decision-making (surgery, TAVI or conservative treatment); and c) to analyse its impact on mortality at one year. MATERIAL AND METHODS Prospective, longitudinal epidemiological study of patients aged 75 years and older with severe aortic stenosis treated by the Heart-Team. VARIABLES sociodemographic, clinical, cardiological, functional and mental variables; cognitive impairment assessed by applying the Mini-Mental State Examination (MMSE). RESULTS We included 300 patients in the study (83.99 ± 4.02 years old; 61.2%, women). Prevalence of cognitive impairment of 15.3%, which was associated with albumin level - odds ratio (OR): 0.082; p = 0.011 - and Barthel (OR: 0.962; p = 0.02) and Lawton (OR: 0.787; p = 0.025) index scores. Surgery was chosen in 24.7% of cases; TAVI in 63.3%; and conservative treatment in 12%. This decision was associated with the score on the Barthel (OR: 0.93; p = 0.012) and Lawton indices (OR: 0.678; p = 0.014), the Short Physical Performance Battery (OR: 0.75; p = 0.037) and the MMSE (OR: 0.691; p < 0.001). Mortality at one year was 14%, and higher in patients with MMSE scores <24 (23.5% vs. 12.8%; p = 0.094). CONCLUSIONS Cognitive impairment is a very common geriatric syndrome in older patients with severe aortic stenosis that is associated with functional disability in activities of daily living. Cognitive impairment has a high impact on decision-making and appears to be a variable associated with increased mortality.
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Affiliation(s)
- P Solla
- Hospital Monte Naranco, 33012 Oviedo, España.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, España
| | - R Díaz
- Hospital Universitario Central de Asturias, Oviedo, España.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, España
| | - J Herrera
- Hospital Monte Naranco, 33012 Oviedo, España
| | - R Del Valle
- Hospital Universitario Central de Asturias, Oviedo, España
| | - C Moreno
- Hospital Monte Naramco, Oviedo, España
| | - M Almendarez
- Hospital Universitario Central de Asturias, Oviedo, España.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, España
| | - E López
- Hospital Monte Naranco, 33012 Oviedo, España
| | - R Álvarez
- Hospital Universitario Central de Asturias, Oviedo, España.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, España
| | - C Morís-de la Tassa
- Hospital Universitario Central de Asturias, Oviedo, España.,Universidad de Oviedo, Oviedo, España.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, España
| | - J Gutiérrez
- Hospital Monte Naranco, 33012 Oviedo, España.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, España
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Bernardi D, Ibarra A, Arbeiter F, Arranz F, Cappelli M, Cara P, Castellanos J, Dzitko H, García A, Gutiérrez J, Królas W, Martin-Fuertes F, Micciché G, Muñoz A, Nitti FS, Pinna T, Podadera I, Pons J, Qiu Y, Román R. The IFMIF-DONES Project: Design Status and Main Achievements Within the EUROfusion FP8 Work Programme. J Fusion Energ 2022. [PMCID: PMC9596351 DOI: 10.1007/s10894-022-00337-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
International Fusion Materials Irradiation Facility-DEMO-Oriented NEutron Source (IFMIF-DONES) is a high-intensity neutron irradiation facility for qualification of fusion reactor materials, which is being designed as part of the European roadmap to fusion-generated electricity. Its main purpose is to study the behavior of materials properties under irradiation in a neutron flux able to simulate the same effects in terms of relevant nuclear responses as those expected in the first wall of the DEMO reactor which is envisaged to follow ITER. It is thus a key facility to support the design, licensing and safe operation of DEMO as well as of the fusion power plants that will be developed afterwards. The start of its construction is foreseen in the next few years. In this contribution, an overview of the IFMIF-DONES neutron source is presented together with a snapshot of the current engineering design status and of the relevant key results achieved within the EUROfusion Work Package Early Neutron Source (WPENS) as part of the 2014–2020 EURATOM Research and Training Programme, complementary to the EU Horizon 2020 Framework Programme (FP8). Moreover, some information on the future developments of the project are given.
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Aiartzaguena A, Del Campo A, Melchor I, Gutiérrez J, Melchor JC, Burgos J. Expected-value bias in mid-trimester preterm birth screening. Ultrasound Obstet Gynecol 2022; 59:793-798. [PMID: 34542928 DOI: 10.1002/uog.24778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 08/13/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVES Cervical length (CL) measurement ≤ 25 mm on mid-trimester ultrasound scan is a known risk factor for preterm birth, for which vaginal progesterone is recommended. The aims of this study were to evaluate whether CL measurement is affected by observer bias and to assess the impact on short cervix prevalence of masking CL measurement during routine mid-trimester ultrasound scan. METHODS This was a flash study designed for a 2-month period (October and November 2018) at Cruces University Hospital (Bizkaia, Spain), in which all CL measurements from routine mid-trimester scans were masked. During the study period, there was no modification of the routine screening method, and women with a short cervix were prescribed 200 mg vaginal progesterone daily as per usual. The control group included women examined in a 2-month period (April and May 2018) prior to the study, in which CL measurements were taken as usual by a non-blinded operator. The primary outcome was the prevalence of short cervix in each group. RESULTS A total of 983 CL measurements were analyzed, including 457 in the blinded group and 526 in the control group. The prevalence of short cervix was 2.7% in the non-blinded group and 5.5% in the blinded group (P = 0.024). We identified a statistically significant difference in the incidence of CL of 24-25 mm between the two groups, with a lower prevalence in the non-blinded vs blinded group (0.6% vs 2.4%; P < 0.005). Moreover, the distribution of CL values was normal in the blinded group, in contrast to the non-blinded group, which was characterized by skewed distribution of CL values. CONCLUSIONS Expected-value bias exists and should be taken into account when measuring CL in mid-trimester preterm birth screening. Blinding has demonstrated to be an effective strategy to improve the performance of CL screening in clinical practice. © 2021 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- A Aiartzaguena
- Hospital Universitario Cruces, Biocruces Bizkaia Health Research Institute, UPV/EHU, Bizkaia, Spain
| | - A Del Campo
- Hospital Universitario Cruces, Biocruces Bizkaia Health Research Institute, UPV/EHU, Bizkaia, Spain
| | - I Melchor
- Hospital Universitario Cruces, Biocruces Bizkaia Health Research Institute, UPV/EHU, Bizkaia, Spain
| | - J Gutiérrez
- Hospital Universitario Cruces, Biocruces Bizkaia Health Research Institute, UPV/EHU, Bizkaia, Spain
| | - J C Melchor
- Hospital Universitario Cruces, Biocruces Bizkaia Health Research Institute, UPV/EHU, Bizkaia, Spain
| | - J Burgos
- Hospital Universitario Cruces, Biocruces Bizkaia Health Research Institute, UPV/EHU, Bizkaia, Spain
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Ortega-Contreras B, Armella A, Appel J, Mennickent D, Araya J, González M, Castro E, Obregón AM, Lamperti L, Gutiérrez J, Guzmán-Gutiérrez E. Pathophysiological Role of Genetic Factors Associated With Gestational Diabetes Mellitus. Front Physiol 2022; 13:769924. [PMID: 35450164 PMCID: PMC9016477 DOI: 10.3389/fphys.2022.769924] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 03/15/2022] [Indexed: 11/13/2022] Open
Abstract
Gestational Diabetes Mellitus (GDM) is a highly prevalent maternal pathology characterized by maternal glucose intolerance during pregnancy that is, associated with severe complications for both mother and offspring. Several risk factors have been related to GDM; one of the most important among them is genetic predisposition. Numerous single nucleotide polymorphisms (SNPs) in genes that act at different levels on various tissues, could cause changes in the expression levels and activity of proteins, which result in glucose and insulin metabolism dysfunction. In this review, we describe various SNPs; which according to literature, increase the risk of developing GDM. These SNPs include: (1) those associated with transcription factors that regulate insulin production and excretion, such as rs7903146 (TCF7L2) and rs5015480 (HHEX); (2) others that cause a decrease in protective hormones against insulin resistance such as rs2241766 (ADIPOQ) and rs6257 (SHBG); (3) SNPs that cause modifications in membrane proteins, generating dysfunction in insulin signaling or cell transport in the case of rs5443 (GNB3) and rs2237892 (KCNQ1); (4) those associated with enzymes such as rs225014 (DIO2) and rs9939609 (FTO) which cause an impaired metabolism, resulting in an insulin resistance state; and (5) other polymorphisms, those are associated with growth factors such as rs2146323 (VEGFA) and rs755622 (MIF) which could cause changes in the expression levels of these proteins, producing endothelial dysfunction and an increase of pro-inflammatory cytokines, characteristic on GDM. While the pathophysiological mechanism is unclear, this review describes various potential effects of these polymorphisms on the predisposition to develop GDM.
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Affiliation(s)
- B. Ortega-Contreras
- Pregnancy Diseases Laboratory, Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, Universidad de Concepción, Concepción, Chile
| | - A. Armella
- Pregnancy Diseases Laboratory, Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, Universidad de Concepción, Concepción, Chile
| | - J. Appel
- Pregnancy Diseases Laboratory, Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, Universidad de Concepción, Concepción, Chile
| | - D. Mennickent
- Pregnancy Diseases Laboratory, Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, Universidad de Concepción, Concepción, Chile
- Department of Instrumental Analysis, Faculty of Pharmacy, Universidad de Concepción, Concepción, Chile
| | - J. Araya
- Department of Instrumental Analysis, Faculty of Pharmacy, Universidad de Concepción, Concepción, Chile
| | - M. González
- Department of Obstetrics and Gynecology, Faculty of Medicine, Universidad de Concepción, Concepción, Chile
| | - E. Castro
- Departamento de Obstetricia y Puericultura, Facultad de Ciencias de la Salud, Universidad de Atacama, Copiapó, Chile
| | - A. M. Obregón
- Faculty of Health Care, Universidad San Sebastián, Concepción, Chile
| | - L. Lamperti
- Pregnancy Diseases Laboratory, Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, Universidad de Concepción, Concepción, Chile
| | - J. Gutiérrez
- Faculty of Health Sciences, Universidad San Sebastián, Santiago,Chile
| | - E. Guzmán-Gutiérrez
- Pregnancy Diseases Laboratory, Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, Universidad de Concepción, Concepción, Chile
- *Correspondence: E. Guzmán-Gutiérrez,
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Blondon M, Jimenez D, Robert‐Ebadi H, Del Toro J, Lopez‐Jimenez L, Falga C, Skride A, Font L, Vazquez FJ, Bounameaux H, Monreal M, Prandoni P, Brenner, B, Farge‐Bancel D, Barba R, Di Micco P, Bertoletti L, Schellong S, Tzoran I, Reis A, Bosevski M, Malý R, Verhamme P, Caprini JA, My Bui H, Adarraga MD, Agud M, Aibar J, Aibar MA, Alfonso J, Amado C, Arcelus JI, Baeza C, Ballaz A, Barba R, Barbagelata C, Barrón M, Barrón‐Andrés B, Blanco‐Molina A, Botella E, Camon AM, Castro J, Caudevilla MA, Cerdà P, Chasco L, Criado J, de Ancos C, de Miguel J, Demelo‐Rodríguez P, Díaz‐Peromingo JA, Díez‐Sierra J, Díaz‐Simón R, Domínguez IM, Encabo M, Escribano JC, Falgá C, Farfán AI, Fernández‐Capitán C, Fernández‐Reyes JL, Fidalgo MA, Flores K, Font C, Francisco I, Gabara C, Galeano‐Valle F, García MA, García‐Bragado F, García‐Mullor MM, Gavín‐Blanco O, Gavín‐Sebastián O, Gil‐Díaz A, Gómez‐Cuervo C, González‐Martínez J, Grau E, Guirado L, Gutiérrez J, Hernández‐Blasco L, Jara‐Palomares L, Jaras MJ, Jiménez D, Joya MD, Jou I, Lacruz B, Lecumberri R, Lima J, Lobo JL, López‐Brull H, López‐Jiménez L, López‐Miguel P, López‐Núñez JJ, López‐Reyes R, López‐Sáez JB, Lorente MA, Lorenzo A, Loring M, Madridano O, Maestre A, Marchena PJ, Martín del Pozo M, Martín‐Martos F, Martínez‐Baquerizo C, Mella C, Mellado M, Mercado MI, Moisés J, Morales MV, Muñoz‐Blanco A, Muñoz‐Guglielmetti D, Muñoz‐Rivas N, Nart E, Nieto JA, Núñez MJ, Olivares MC, Ortega‐Michel C, Ortega‐Recio MD, Osorio J, Otalora S, Otero R, Parra P, Parra V, Pedrajas JM, Pellejero G, Pérez‐Jacoiste A, Peris ML, Pesántez D, Porras JA, Portillo J, Reig L, Riera‐Mestre A, Rivas A, Rodríguez‐Cobo A, Rodríguez‐Matute C, Rogado J, Rosa V, Rubio CM, Ruiz‐Artacho P, Ruiz‐Giménez N, Ruiz‐Ruiz J, Ruiz‐Sada P, Sahuquillo JC, Salgueiro G, Sampériz A, Sánchez‐Muñoz‐Torrero JF, Sancho T, Sigüenza P, Sirisi M, Soler S, Suárez S, Suriñach JM, Tiberio G, Torres MI, Tolosa C, Trujillo‐Santos J, Uresandi F, Usandizaga E, Valle R, Vela JR, Vidal G, Vilar C, Villares P, Zamora C, Gutiérrez P, Vázquez FJ, Vanassche T, Vandenbriele C, Verhamme P, Hirmerova J, Malý R, Salgado E, Benzidia I, Bertoletti L, Bura‐Riviere A, Crichi B, Debourdeau P, Espitia O, Farge‐Bancel D, Helfer H, Mahé I, Moustafa F, Poenou G, Schellong S, Braester A, Brenner B, Tzoran I, Amitrano M, Bilora F, Bortoluzzi C, Brandolin B, Ciammaichella M, Colaizzo D, Dentali F, Di Micco P, Giammarino E, Grandone E, Mangiacapra S, Mastroiacovo D, Maida R, Mumoli N, Pace F, Pesavento R, Pomero F, Prandoni P, Quintavalla R, Rocci A, Siniscalchi C, Tufano A, Visonà A, Vo Hong N, Zalunardo B, Kalejs RV, Maķe K, Ferreira M, Fonseca S, Martins F, Meireles J, Bosevski M, Zdraveska M, Mazzolai L, Caprini JA, Tafur AJ, Weinberg I, Wilkins H, Bui HM. Comparative clinical prognosis of massive and non-massive pulmonary embolism: A registry-based cohort study. J Thromb Haemost 2021; 19:408-416. [PMID: 33119949 DOI: 10.1111/jth.15146] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/29/2020] [Accepted: 10/21/2020] [Indexed: 01/16/2023]
Abstract
AIMS Little is known about the prognosis of patients with massive pulmonary embolism (PE) and its risk of recurrent venous thromboembolism (VTE) compared with non-massive PE, which may inform clinical decisions. Our aim was to compare the risk of recurrent VTE, bleeding, and mortality after massive and non-massive PE during anticoagulation and after its discontinuation. METHODS AND RESULTS We included all participants in the RIETE registry who suffered a symptomatic, objectively confirmed segmental or more central PE. Massive PE was defined by a systolic hypotension at clinical presentation (<90 mm Hg). We compared the risks of recurrent VTE, major bleeding, and mortality using time-to-event multivariable competing risk modeling. There were 3.5% of massive PE among 38 996 patients with PE. During the anticoagulation period, massive PE was associated with a greater risk of major bleeding (subhazard ratio [sHR] 1.72, 95% confidence interval [CI] 1.28-2.32), but not of recurrent VTE (sHR 1.15, 95% CI 0.75-1.74) than non-massive PE. An increased risk of mortality was only observed in the first month after PE. After discontinuation of anticoagulation, among 11 579 patients, massive PE and non-massive PE had similar risks of mortality, bleeding, and recurrent VTE (sHR 0.85, 95% CI 0.51-1.40), but with different case fatality of recurrent PE (11.1% versus 2.4%, P = .03) and possibly different risk of recurrent fatal PE (sHR 3.65, 95% CI 0.82-16.24). CONCLUSION In this large prospective registry, the baseline hemodynamic status of the incident PE did not influence the risk of recurrent VTE, during and after the anticoagulation periods, but was possibly associated with recurrent PE of greater severity.
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Affiliation(s)
- Marc Blondon
- Division of Angiology and Hemostasis Geneva University Hospitals and Faculty of Medicine Geneva Switzerland
| | - David Jimenez
- Respiratory Department Hospital Ramón y Cajal and Medicine Department Universidad de Alcalá (IRYCIS) Madrid Spain
| | - Helia Robert‐Ebadi
- Division of Angiology and Hemostasis Geneva University Hospitals and Faculty of Medicine Geneva Switzerland
| | - Jorge Del Toro
- Department of Internal Medicine Hospital General Universitario Gregorio Marañón Madrid Spain
| | | | - Conxita Falga
- Department of Internal Medicine Hospital de Mataro Barcelona Spain
| | - Andris Skride
- Department of Cardiology Ospedale Pauls Stradins Clinical University Hospital Riga Latvia
| | - Llorenç Font
- Department of Haematology Hospital de Tortosa Verge de la Cinta Tarragona Spain
| | | | - Henri Bounameaux
- Division of Angiology and Hemostasis Geneva University Hospitals and Faculty of Medicine Geneva Switzerland
| | - Manuel Monreal
- Department of Internal Medicine Hospital Germans Trias i Pujol Badalona Spain
- Universidad Catolica de Murcia Murcia Spain
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Fernández-Ávila DG, Patino L, Gutiérrez J. AB1354-HPR CURRENT SITUATION OF TRAINING IN RHEUMATOLOGY IN THE POSTGRADUATE CURRICULUMS OF INTERNAL MEDICINE, FAMILY MEDICINE, GERIATRICS, PAIN MEDICINE AND, PHYSICAL AND REHABILITATION MEDICINE ACROSS COLOMBIA. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.6490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Rheumatic diseases are an important complaint in patients, although the incidence is low, they cause disability and impact on the health system. Currently, in Colombia, there are 198 rheumatologist, so it’s important to know how is rheumatology training in specialties related to rheumatology, which are the specialties that the patient with a suspected rheumatic disease will visit at first.Objectives:To describe the training status in rheumatology in the postgraduate curriculums of internal medicine, family medicine, geriatrics, pain medicine and, physical and rehabilitation medicine across Colombia.Methods:This is a descriptive cross-sectional study. A survey was applied in each participating medical school using the RedCap® platform. The questionnaire included multiple-choice responses and a textbox to complete. The survey was done to the 29 registered medical schools which offer the specializations already mentioned. The program director or an assistant professor was asked to fill the survey out between April 2019 and January 2020. The sample was described through means and standard deviations or frequency and percentages according to the type of variable.Results:Data was obtained from all the programs of specialization in internal medicine (n = 29), family medicine (n= 9), pain medicine (n= 8), physical and rehabilitation medicine (n= 6), geriatrics (n= 4). All the programs of internal medicine, geriatrics, and physical/rehabilitation medicine have rheumatology as a mandatory subject within the curriculum, while in family medicine and pain medicine programs: 33% (n= 3), and 57% (n= 4) respectively, does not have a rheumatology training. In internal medicine the average duration of rheumatology training is 56 days (28 to 90 days), in geriatrics, it is 56 days (45-60 days), in family medicine 26.1 days (3 to 30), in medicine physical and rehabilitation medicine 35 days (30 to 60) and in pain medicine 40 days (30 to 60). 93.8% (n= 45) of the programs surveyed have a rheumatologist as a teacher in charge of both, the academic activities and the external rheumatology consultation and in the rest of the programs these activities are done by an specialist in internal medicine, family medicine or pain medicine. The theoretical components most frequently offered in seminars or master classes are: rheumatoid arthritis, lupus, vasculitis, spondyloarthritis, gout, osteoarthritis, sjogren’s syndrome and osteoporosis. The specialization programs have an average of 3 rheumatologists as professors (range 1 to 8). 43.8% of the programs use some virtual resources to complement the teaching in rheumatology such as video conferencing in virtual platform or YouTube (8.3%), online course (6.3%), mobile application (16.7%), others such as moodle and webcast platform (12.5%). 92.9% (n = 52) offer their students an elective rotation in the rheumatology service, in addition to the mandatory one. Finally, 89.6% (n = 43) of the interviewees agree with the way in which the curriculum is structured in their programs, to approach initial diagnostic and therapeutic in patients with suspected or established rheumatic disease. However, 23.2% (n = 13) of the professors of the surveyed programs (6 of internal medicine, 4 of family medicine, 2 of pain medicine and 1 of physical/rehabilitation medicine), consider that the rheumatology subject should not be mandatory within their programs.Conclusion:All physicians need to be familiar with rheumatological conditions since the rate of rheumatologists in Colombia is low. Knowing rheumatology is an increasingly important role in a clinical scenario in many postgraduate curriculums as we explain in this study.References:[1]Sivera F, et al; Working Group on Training in Rheumatology across Europe. Differences and similarities in rheumatology specialty training programmes across European countries. Ann Rheum Dis. 2015 Jun;74(6):1183-7Disclosure of Interests:None declared
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Fernández-Ávila DG, Rincón-Riaño D, Gutiérrez J. THU0467 CONCEPTS AND PERCEPTIONS ABOUT FIBROMYALGIA DIAGNOSIS, MONITORING AND TREATMENT AMONG COLOMBIAN RHEUMATOLOGISTS, PHYSIATRIST AND PAIN PHYSICIAN. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Fibromyalgia is a chronic disease characterized by the presence of widespread and persistent musculoskeletal pain associated with a variety of symptoms. The concepts and perceptions around diagnosis and treatment of fibromyalgia among physicians are not objectively known. The purpose of this study is to obtain objective data through a survey and describe the concepts and perceptions about the diagnosis, treatment and treatment of fibromyalgia among colombian rheumatologists, physiatrist and pain physiciansObjectives:The main purpose of this study is to obtain objective data on this subject and describe the concepts and perceptions about the diagnosis, treatment and monitoring of FM among colombian rheumatologists, physiatrist and pain physicians.Methods:Cross-sectional study. Through a focus group in which two rheumatologists and one expert in qualitative research methods participated, a survey was designed to evaluated the perceptions and concepts that rheumatologists, physiatrist and pain physicians have on the diagnosis and treatment of fibromyalgia. The survey was self-applied anonymously through the internet.Results:Survey applied to 139 rheumatologists, 99 physiatrist and 81 pain physicians. 35 rheumatologists (25.2 %), 17 physiatrist (17.1 %) and 58 pain physicians (71.6 %) consider that there is not enough evidence to recognize fibromyalgia as a disease. 45 rheumatologists (32.4 %), 86 physiatrist (86 %) and 73 pain physicians (90.1 %) consider that the 1990 ACR (American college of Rheumatology) criteria are not sufficient to diagnose fibromyalgia, despite the fact more than 90% of them use the criteria as a tool to approach the diagnosis when suspecting fibromyalgia. The most formulated medications for managing fibromyalgia are antidepressants and is used by more than 80% of the respondents, followed by antiepileptics in pain physician (88.9%) but less than physiatrists and rheumatologists (66.6 % and 64.7 % respectively), and analgesic much more for pain physician and physiatry and less for rheumatologists (84 %, 75.7 % and 26.6 % respectively). All respondents consider that the patient with fibromyalgia should have a multidisciplinary approach. Most doctors of the three specialties believe that physiatrist should be the leaders of interdisciplinary management in the treatment of fibromyalgia patients.Conclusion:We present objective information on the perceptions of fibromyalgia among a group of Colombian rheumatologists, physiatrist and pain physician, documenting a frequent use of the ACR 1990 classification criteria. As regards treatment, a high percentage use of antidepressants and antiepileptic. Most believe that physiatrist should be the leaders of interdisciplinary management in the treatment of fibromyalgia patients.References:[1]Mu R, Li C, Zhu J-X, Zhang X-Y, Duan T-J, Feng M, et al. National survey of knowledge, attitude and practice of fibromyalgia among rheumatologists in China. Int J Rheum Dis. 2013;16:258–63.[2]Arshad A, Kong KO. Awareness and perceptions of fibromyalgia syndrome: a survey of Malaysian and Singaporean rheumatologists. Singapore Med J. 2007;48:25–30.[3]Arshad A, Kong KO, Ooi KK. Awareness and perceptions of fibromyalgia syndrome: a survey of southeast asian rheumatologists. J Clin Rheumatol. 2007;13:59–62.[4]Bloom S, Ablin JN, Lebel D, Rath E, Faran Y, Daphna-Tekoah S, et al. Awareness of diagnostic and clinical features of fibromyalgia among orthopedic surgeons. Rheumatol Int. 2013;33:927–31.[5]Clark P, Paiva ES, Ginovker A, Salomón PA. A patient and physician survey of fibromyalgia across Latin America and Europe. BMC Musculoskelet Disord. 2013;14:188.Disclosure of Interests: :None declared
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Lavajoo F, Perelló-Amorós M, Vélez EJ, Sánchez-Moya A, Balbuena-Pecino S, Riera-Heredia N, Fernández-Borràs J, Blasco J, Navarro I, Capilla E, Gutiérrez J. Regulatory mechanisms involved in muscle and bone remodeling during refeeding in gilthead sea bream. Sci Rep 2020; 10:184. [PMID: 31932663 PMCID: PMC6957526 DOI: 10.1038/s41598-019-57013-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 07/30/2019] [Accepted: 12/02/2019] [Indexed: 12/17/2022] Open
Abstract
The tolerance of fish to fasting offers a model to study the regulatory mechanisms and changes produced when feeding is restored. Gilthead sea bream juveniles were exposed to a 21-days fasting period followed by 2 h to 7-days refeeding. Fasting provoked a decrease in body weight, somatic indexes, and muscle gene expression of members of the Gh/Igf system, signaling molecules (akt, tor and downstream effectors), proliferation marker pcna, myogenic regulatory factors, myostatin, and proteolytic molecules such as cathepsins or calpains, while most ubiquitin-proteasome system members increased or remained stable. In bone, downregulated expression of Gh/Igf members and osteogenic factors was observed, whereas expression of the osteoclastic marker ctsk was increased. Refeeding recovered the expression of Gh/Igf system, myogenic and osteogenic factors in a sequence similar to that of development. Akt and Tor phosphorylation raised at 2 and 5 h post-refeeding, much faster than its gene expression increased, which occurred at day 7. The expression in bone and muscle of the inhibitor myostatin (mstn2) showed an inverse profile suggesting an inter-organ coordination that needs to be further explored in fish. Overall, this study provides new information on the molecules involved in the musculoskeletal system remodeling during the early stages of refeeding in fish.
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Affiliation(s)
- F Lavajoo
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
- Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan, Bandar Abbas, I.R., Iran
| | - M Perelló-Amorós
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - E J Vélez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5B4, Canada
| | - A Sánchez-Moya
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - S Balbuena-Pecino
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - N Riera-Heredia
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - J Fernández-Borràs
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - J Blasco
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - I Navarro
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - E Capilla
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - J Gutiérrez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain.
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Avnery O, Martin M, Bura-Riviere A, Barillari G, Mazzolai L, Mahé I, Marchena PJ, Verhamme P, Monreal M, Ellis MH, Aibar MA, Aibar J, Amado C, Arcelus JI, Ballaz A, Barba R, Barrón M, Barrón‐Andrés B, Bascuñana J, ina A, Camon AM, Cañas I, Carrasco C, Castro J, Ancos C, Toro J, Demelo P, Díaz‐Peromingo JA, Falgá C, Farfán AI, Fernández‐Capitán C, Fernández‐Criado MC, Fernández‐Núñez S, Fidalgo MA, Font C, Font L, Freire M, Gallego M, García MA, García‐Bragado F, García‐Morillo M, García‐Raso A, Gavín O, Gayol MC, Gil‐Díaz A, Gómez V, Gómez‐Cuervo C, González‐Martínez J, Grau E, Gutiérrez J, Hernández‐Blasco LM, Iglesias M, Jara‐Palomares L, Jaras MJ, Jiménez R, Jiménez‐Castro D, Jiménez‐López J, Joya MD, Lima J, Llamas P, Lobo JL, López‐Jiménez L, López‐Miguel P, López‐Núñez JJ, López‐Reyes R, López‐Sáez JB, Lorente MA, Lorenzo A, Loring M, Madridano O, Maestre A, Martín del Pozo M, Martín‐Guerra JM, Martín‐Romero M, Mellado M, Morales MV, Muñoz N, Nieto‐Cabrera MA, Nieto‐Rodríguez JA, Núñez‐Ares A, Núñez MJ, Olivares MC, Otalora S, Otero R, Pedrajas JM, Pellejero G, Pérez‐Rus G, Peris ML, Porras JA, Rivas A, Rodríguez‐Dávila MA, Rodríguez‐Hernández A, Rubio CM, Ruiz‐Artacho P, Ruiz‐Ruiz J, Ruiz‐Torregrosa P, Ruiz‐Sada P, Sahuquillo JC, Salazar V, Sampériz A, Sánchez‐Muñoz‐Torrero JF, Sancho T, Soler S, Sopeña B, Suriñach JM, Tolosa C, Torres MI, Trujillo‐Santos J, Uresandi F, Valle R, Vidal G, Villares P, Gutiérrez P, Vázquez FJ, Vilaseca A, Vanassche T, Vandenbriele C, Hirmerova J, Malý R, Salgado E, Benzidia I, Bertoletti L, Debourdeau P, Farge‐Bancel D, Hij A, Moustafa F, Schellong S, Braester A, Brenner B, Tzoran I, Sharif‐Kashani B, Bilora F, Bortoluzzi C, Bucherini E, Ciammaichella M, Dentali F, Di Micco P, Di Pangrazio M, Maida R, Mastroiacovo D, Pace F, Pallotti G, Parisi R, Pesavento R, Prandoni P, Quintavalla R, Rocci A, Siniscalchi C, Tufano A, Visonà A, Vo Hong N, Gibietis V, Skride A, Strautmane S, Bosevski M, Zdraveska M, Bounameaux H, Fresa M, Ney B, Caprini J, Bui HM, Pham KQ. D-dimer levels and risk of recurrence following provoked venous thromboembolism: findings from the RIETE registry. J Intern Med 2020; 287:32-41. [PMID: 31394000 DOI: 10.1111/joim.12969] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Patients with venous thromboembolism (VTE) secondary to transient risk factors may develop VTE recurrences after discontinuing anticoagulation. Identifying at-risk patients could help to guide the duration of therapy. METHODS We used the RIETE database to assess the prognostic value of d-dimer testing after discontinuing anticoagulation to identify patients at increased risk for recurrences. Transient risk factors were classified as major (postoperative) or minor (pregnancy, oestrogen use, immobilization or recent travel). RESULTS In December 2018, 1655 VTE patients with transient risk factors (major 460, minor 1195) underwent d-dimer measurements after discontinuing anticoagulation. Amongst patients with major risk factors, the recurrence rate was 5.74 (95% CI: 3.19-9.57) events per 100 patient-years in those with raised d-dimer levels and 2.68 (95% CI: 1.45-4.56) in those with normal levels. Amongst patients with minor risk factors, the rates were 7.79 (95% CI: 5.71-10.4) and 3.34 (95% CI: 2.39-4.53), respectively. Patients with major risk factors and raised d-dimer levels (n = 171) had a nonsignificantly higher rate of recurrences (hazard ratio [HR]: 2.14; 95% CI: 0.96-4.79) than those with normal levels. Patients with minor risk factors and raised d-dimer levels (n = 382) had a higher rate of recurrences (HR: 2.34; 95% CI: 1.51-3.63) than those with normal levels. On multivariate analysis, raised d-dimers (HR: 1.74; 95% CI: 1.09-2.77) were associated with an increased risk for recurrences in patients with minor risk factors, not in those with major risk factors. CONCLUSIONS Patients with raised d-dimer levels after discontinuing anticoagulant therapy for VTE provoked by a minor transient risk factor were at an increased risk for recurrences.
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Affiliation(s)
- O Avnery
- Meir Medical Center, Hematology Institute and Blood Bank, Kfar Saba, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - M Martin
- Hospital Infanta Sofia San Sebastian de los Reyes and Universidad Europea de Madrid, Madrid, Spain
| | - A Bura-Riviere
- Department of Vascular Medicine, Hôpital de Rangueil, Toulouse, France
| | - G Barillari
- Department of Internal Medicine, Ospedale S. Maria della Misericordia, Udine, Italy
| | - L Mazzolai
- Department of Angiology, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - I Mahé
- Department of Internal Medicine, Hôpital Louis Mourier, Colombes (APHP), University Paris 7, Colombes, France
| | - P J Marchena
- Department of Internal Medicine and Emergency, Parc Sanitari Sant Joan de Deu-Hospital General, Barcelona, Spain
| | - P Verhamme
- Vascular Medicine and Haemostasis, University of Leuven, Leuven, Belgium
| | - M Monreal
- Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain
| | - M H Ellis
- Meir Medical Center, Hematology Institute and Blood Bank, Kfar Saba, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Barrera A, Alhambra M, Molina M, Rebollo Á, Alcántara M, León S, Moreno P, Muñoz C, Manzano G, Padillo J, Calañas A, Gutiérrez J, Gálvez M. MON-PO368: Nutritional Status and Immunonutrition in Patients Intervened for Total Laringectomy for Cancer. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32202-2] [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: 11/27/2022]
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Pineda C, Rodríguez LC, Mendoza J, Sandoval H, Gutiérrez J. Popeye's sign. Clin Rheumatol 2019; 38:2949-2950. [PMID: 31273635 DOI: 10.1007/s10067-019-04652-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/14/2019] [Accepted: 06/18/2019] [Indexed: 11/30/2022]
Affiliation(s)
- C Pineda
- Division of Musculoskeletal and Rheumatic Disorders, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada Mexico-Xochimilco 289, Colonia Arenal de Guadalupe, Alcaldía Tlalpan, CP 143898, Mexico City, Mexico.
| | - L C Rodríguez
- Division of Musculoskeletal and Rheumatic Disorders, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada Mexico-Xochimilco 289, Colonia Arenal de Guadalupe, Alcaldía Tlalpan, CP 143898, Mexico City, Mexico
| | - J Mendoza
- Division of Musculoskeletal and Rheumatic Disorders, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada Mexico-Xochimilco 289, Colonia Arenal de Guadalupe, Alcaldía Tlalpan, CP 143898, Mexico City, Mexico
| | - H Sandoval
- Sociomedical Research Unit, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City, Mexico
| | - J Gutiérrez
- Division of Musculoskeletal and Rheumatic Disorders, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada Mexico-Xochimilco 289, Colonia Arenal de Guadalupe, Alcaldía Tlalpan, CP 143898, Mexico City, Mexico
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Gutiérrez J, Baraibar AM, Albiñana E, Velasco P, Solís JM, Hernández-Guijo JM. Methylmercury reduces synaptic transmission and neuronal excitability in rat hippocampal slices. Pflugers Arch 2018; 470:1221-1230. [DOI: 10.1007/s00424-018-2144-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/21/2018] [Accepted: 04/05/2018] [Indexed: 01/22/2023]
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Lange MK, Penagos-Tabares F, Vélez J, Gutiérrez J, Hirzmann J, Chaparro-Gutiérrez JJ, Piedrahita D, Taubert A, Hermosilla C. Regional report on Angiostrongylus vasorum in Colombia: Genetic similarity to European lineage. Vet Parasitol Reg Stud Reports 2018; 13:21-23. [PMID: 31014876 DOI: 10.1016/j.vprsr.2018.03.004] [Citation(s) in RCA: 4] [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] [Received: 10/28/2017] [Revised: 02/23/2018] [Accepted: 03/18/2018] [Indexed: 10/17/2022]
Abstract
The canine lungworm Angiostrongylus vasorum is considered neglected in South America and was only sporadically reported in dogs and wildlife. Gastropods act as obligatory intermediate hosts for this parasitosis. We here analysed Achatina fulica (African giant snail) populations from 5 regions of Colombia for A. vasorum infections. In total, 609 snails were collected from the departments Antioquia, Valle del Cauca and Putumayo. Angiostrongylus vasorum-infected A. fulica were found in all departments with a total prevalence of 3.9%. Larvae originating from Putumayo were molecularly characterized and identified as the European lineage of A. vasorum. This regional report shows for the first time the presence of A. vasorum in intermediate hosts in Colombia and the European genotype in South America.
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Affiliation(s)
- M K Lange
- Institute of Parasitology, Justus Liebig University, Schubertstraße 81, 35392 Giessen, Germany.
| | - F Penagos-Tabares
- Institute of Parasitology, Justus Liebig University, Schubertstraße 81, 35392 Giessen, Germany; CIBAV research group, Veterinary Medicine School, Faculty of Agrarian Sciences, University of Antioquia, Carrera 75 No 65-87, Medellín, Colombia.
| | - J Vélez
- Institute of Parasitology, Justus Liebig University, Schubertstraße 81, 35392 Giessen, Germany; CIBAV research group, Veterinary Medicine School, Faculty of Agrarian Sciences, University of Antioquia, Carrera 75 No 65-87, Medellín, Colombia.
| | - J Gutiérrez
- CIBAV research group, Veterinary Medicine School, Faculty of Agrarian Sciences, University of Antioquia, Carrera 75 No 65-87, Medellín, Colombia.
| | - J Hirzmann
- Institute of Parasitology, Justus Liebig University, Schubertstraße 81, 35392 Giessen, Germany.
| | - J J Chaparro-Gutiérrez
- CIBAV research group, Veterinary Medicine School, Faculty of Agrarian Sciences, University of Antioquia, Carrera 75 No 65-87, Medellín, Colombia.
| | - Diego Piedrahita
- CIBAV research group, Veterinary Medicine School, Faculty of Agrarian Sciences, University of Antioquia, Carrera 75 No 65-87, Medellín, Colombia.
| | - A Taubert
- Institute of Parasitology, Justus Liebig University, Schubertstraße 81, 35392 Giessen, Germany.
| | - C Hermosilla
- Institute of Parasitology, Justus Liebig University, Schubertstraße 81, 35392 Giessen, Germany.
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Lopes A, Gutiérrez J, Barandiarán J. Direct fabrication of a 3D-shape film of polyvinylidene fluoride (PVDF) in the piezoelectric β-phase for sensor and actuator applications. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.12.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Todolí-Parra JA, Tung-Chen Y, Micó L, Gutiérrez J, Hernández-Jaras J, Ruiz-Cerda JL. Lupus nephritis with preserved kidney function associated with poorer cardiovascular risk control: A call for more awareness. Hipertens Riesgo Vasc 2018; 35:S1889-1837(17)30088-0. [PMID: 29396242 DOI: 10.1016/j.hipert.2017.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 04/21/2017] [Revised: 10/25/2017] [Accepted: 11/03/2017] [Indexed: 02/01/2023]
Abstract
BACKGROUND Despite the improvement in the prognosis of lupus nephritis (LN), the cardiovascular morbimortality remains high. The early recognition and remission of flares, while trying to avoid the metabolic adverse effects of medication, must be mandatory. AIM The aim of our study was to assess the cardiovascular (CV) risk profile in a cohort of lupus patients with preserved kidney function after a nephritis episode, compared to patients without a nephritis flare. METHODS 130 patients diagnosed of SLE (32 with previous nephritis flare and 98 without) were studied in order to evaluate the CV risk profile, despite the preserved kidney function. RESULTS The most prevalent risk factors were sedentary lifestyle (57.6%), overweight/obesity (38.3%) and dyslipidemia (36%), followed by smoking (32%) and hypertension (16%). Though more than a half (53.1%) was taking CV medication, a high percentage did not reach a therapeutic target value, especially regarding obesity (11.5%) and cholesterol levels (LDL-C of 16%). The prevalence of dyslipidemia (53.1% vs 30.6%), smoking (46.6% vs 27.5%), left ventricular hypertrophy (LVH) (21.4% vs 6.4%) and lower HDL-C (48.6mg/dL vs 55.4mg/dL) were significantly different in the group with previous nephritis flare. Moreover, young patients with lupus nephritis, received more pulses of corticosteroids and cyclophosphamide, had higher prevalence of hypertension, LVH, higher proteinuria, hospital admissions and waist circumference, constituting the subgroup of patients with greater aggregation of CV risk factors. CONCLUSIONS Patients with previous nephritis flare showed a poor control of CV risk factors despite the preserved renal function, these patients would require a closer therapeutic management.
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Affiliation(s)
- J A Todolí-Parra
- Department of Internal Medicine, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - Y Tung-Chen
- Department of Emergency Medicine, University Hospital La Paz, Madrid, Spain.
| | - L Micó
- Department of Internal Medicine, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - J Gutiérrez
- Department of Internal Medicine, University of Santa Bárbara, Soria, Spain
| | - J Hernández-Jaras
- Department of Nephrology, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - J L Ruiz-Cerda
- Department of Urology, University and Polytechnic Hospital of La Fe, Valencia, Spain
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García-Gigorro R, Renes-Carreño E, Pérez-Vela J, Marín-Mateos H, Gutiérrez J, Corrés-Peiretti M, Delgado J, Pérez-de la Sota E, Cortina-Romero J, Montejo-González J. Soporte mecánico con membrana de oxigenación extracorpórea veno-arterial (ECMO-VA): evolución a corto y a largo plazo tras la retirada de la asistencia. Med Intensiva 2017; 41:513-522. [DOI: 10.1016/j.medin.2016.12.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 12/06/2016] [Accepted: 12/27/2016] [Indexed: 11/26/2022]
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Irgang R, González-Luna R, Gutiérrez J, Poblete-Morales M, Rojas V, Tapia-Cammas D, Avendaño-Herrera R. First identification and characterization of Tenacibaculum dicentrarchi isolated from Chilean red conger eel (Genypterus chilensis, Guichenot 1848). J Fish Dis 2017; 40:1915-1920. [PMID: 28548691 DOI: 10.1111/jfd.12643] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 03/06/2017] [Accepted: 03/07/2017] [Indexed: 06/07/2023]
Affiliation(s)
- R Irgang
- Universidad Andres Bello, Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Viña del Mar, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile
| | - R González-Luna
- Universidad Andres Bello, Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Viña del Mar, Chile
- Escuela de Tecnología Médica, Facultad de Medicina, Universidad Andrés Bello, Viña del Mar, Chile
| | - J Gutiérrez
- Universidad Andres Bello, Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Viña del Mar, Chile
- Escuela de Tecnología Médica, Facultad de Medicina, Universidad Andrés Bello, Viña del Mar, Chile
| | - M Poblete-Morales
- Universidad Andres Bello, Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Viña del Mar, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile
| | - V Rojas
- Laboratorio de Genética e Inmunología Molecular, Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - D Tapia-Cammas
- Universidad Andres Bello, Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Viña del Mar, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile
| | - R Avendaño-Herrera
- Universidad Andres Bello, Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Viña del Mar, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile
- Centro de Investigación Marina Quintay (CIMARQ), Valparaíso, Chile
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Lázpita P, Barandiarán JM, Gutiérrez J, Mondelli C, Sozinov A, Chernenko VA. Polarized Neutron Study of Ni-Mn-Ga Alloys: Site-Specific Spin Density Affected by Martensitic Transformation. Phys Rev Lett 2017; 119:155701. [PMID: 29077463 DOI: 10.1103/physrevlett.119.155701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Indexed: 06/07/2023]
Abstract
Polarized neutron scattering has been used to obtain the magnetic moment at specific crystallographic sites of the austenitic and martensitic phases of two nonstoichiometric Ni-Mn-Ga single crystals with close composition. These alloys have been chosen because they exhibit different structures in the paramagnetic state and inverse positions of the respective martensitic transformation and Curie temperature. The diffraction analysis revealed a remarkable result: Despite the similar alloy composition, the magnetic moments of Mn are quite different for the two alloys at the same crystallographic position. Furthermore, such a difference enabled us to assess that the exchange coupling between Mn atoms switches from ferro- to antiferromagnetic at a distance between 2.92 and 3.32 Å in the martensite. These results are of great importance to guide first principles calculations that, up to now, have not been contrasted with experiments at the atomic level.
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Affiliation(s)
- P Lázpita
- Dpto Electricidad y Electrónica, UPV/EHU, 48940 Leioa, Spain
| | - J M Barandiarán
- Dpto Electricidad y Electrónica, UPV/EHU, 48940 Leioa, Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, 48160 Derio, Spain
| | - J Gutiérrez
- Dpto Electricidad y Electrónica, UPV/EHU, 48940 Leioa, Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, 48160 Derio, Spain
| | - C Mondelli
- CNR-IOM, c/o Institute Laue Langevin, 38042 Grenoble, France
| | - A Sozinov
- Material Physics Laboratory, Lappeenranta University of Technology, Laitaatsillantie 3, 57170 Savonlinna, Finland
| | - V A Chernenko
- Dpto Electricidad y Electrónica, UPV/EHU, 48940 Leioa, Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, 48160 Derio, Spain
- Ikerbasque, Basque Foundation for Science, 48011 Bilbao, Spain
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Tzoran I, Papadakis M, Brenner B, Fidalgo Á, Rivas A, Wells PS, Gavín O, Adarraga MD, Moustafa F, Monreal M, Prandoni P, Brenner B, Barba R, Di Micco P, Bertoletti L, Tzoran I, Reis A, Bosevski M, Bounameaux H, Malý R, Wells P, Papadakis M, Adarraga M, Aibar M, Alfonso M, Arcelus J, Barba R, Barrón M, Barrón-Andrés B, Bascuñana J, Blanco-Molina A, Bueso T, Cañada G, Cañas I, Chic N, del Pozo R, del Toro J, Díaz-Pedroche M, Díaz-Peromingo J, Falgá C, Fernández-Capitán C, Fidalgo M, Font C, Font L, Gallego P, García A, García M, García-Bragado F, García-Brotons P, Gavín O, Gómez C, Gómez V, González J, González-Marcano D, Grau E, Grimón A, Guijarro R, Gutiérrez J, Hernández-Comes G, Hernández-Blasco L, Hermosa-Los Arcos M, Jara-Palomares L, Jaras M, Jiménez D, Joya M, Llamas P, Lecumberri R, Lobo J, López P, López-Jiménez L, López-Reyes R, López-Sáez J, Lorente M, Lorenzo A, Maestre A, Marchena P, Martín-Martos F, Monreal M, Nieto J, Nieto S, Núñez A, Núñez M, Odriozola M, Otero R, Pedrajas J, Pérez G, Pérez-Ductor C, Peris M, Porras J, Reig O, Riera-Mestre A, Riesco D, Rivas A, Rodríguez C, Rodríguez-Dávila M, Rosa V, Ruiz-Giménez N, Sahuquillo J, Sala-Sainz M, Sampériz A, Sánchez-Martínez R, Sánchez Simón-Talero R, Sanz O, Soler S, Suriñach J, Torres M, Trujillo-Santos J, Uresandi F, Valero B, Valle R, Vela J, Vicente M, Villalobos A, Vanassche T, Verhamme P, Wells P, Hirmerova J, Malý R, Tomko T, del Pozo G, Salgado E, Sánchez G, Bertoletti L, Bura-Riviere A, Mahé I, Merah A, Moustafa F, Papadakis M, Braester A, Brenner B, Tzoran I, Antonucci G, Barillari G, Bilora F, Bortoluzzi C, Cattabiani C, Ciammaichella M, Di Biase J, Di Micco P, Duce R, Ferrazzi P, Giorgi-Pierfranceschi M, Grandone E, Imbalzano E, Lodigiani C, Maida R, Mastroiacovo D, Pace F, Pesavento R, Pinelli M, Poggio R, Prandoni P, Rota L, Tiraferri E, Tonello D, Tufano A, Visonà A, Zalunardo B, Gibietis V, Skride A, Vitola B, Monteiro P, Ribeiro J, Sousa M, Bosevski M, Zdraveska M, Bounameaux H, Calanca L, Erdmann A, Mazzolai L. Outcome of Patients with Venous Thromboembolism and Factor V Leiden or Prothrombin 20210 Carrier Mutations During the Course of Anticoagulation. Am J Med 2017; 130:482.e1-482.e9. [PMID: 27986523 DOI: 10.1016/j.amjmed.2016.11.016] [Citation(s) in RCA: 6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Individuals with factor V Leiden or prothrombin G20210A mutations are at a higher risk to develop venous thromboembolism. However, the influence of these polymorphisms on patient outcome during anticoagulant therapy has not been consistently explored. METHODS We used the Registro Informatizado de Enfermedad TromboEmbólica database to compare rates of venous thromboembolism recurrence and bleeding events occurring during the anticoagulation course in factor V Leiden carriers, prothrombin mutation carriers, and noncarriers. RESULTS Between March 2001 and December 2015, 10,139 patients underwent thrombophilia testing. Of these, 1384 were factor V Leiden carriers, 1115 were prothrombin mutation carriers, and 7640 were noncarriers. During the anticoagulation course, 160 patients developed recurrent deep vein thrombosis and 94 patients developed pulmonary embolism (16 died); 154 patients had major bleeding (10 died), and 291 patients had nonmajor bleeding. On multivariable analysis, factor V Leiden carriers had a similar rate of venous thromboembolism recurrence (adjusted hazard ratio [HR], 1.16; 95% confidence interval [CI], 0.82-1.64), half the rate of major bleeding (adjusted HR, 0.50; 95% CI, 0.25-0.99) and a nonsignificantly lower rate of nonmajor bleeding (adjusted HR, 0.66; 95% CI, 0.43-1.01) than noncarriers. Prothrombin mutation carriers and noncarriers had a comparable rate of venous thromboembolism recurrence (adjusted HR, 1.00; 95% CI, 0.68-1.48), major bleeding (adjusted HR, 0.75; 95% CI, 0.42-1.34), and nonmajor bleeding events (adjusted HR, 1.10; 95% CI, 0.77-1.57). CONCLUSIONS During the anticoagulation course, factor V Leiden carriers had a similar risk for venous thromboembolism recurrence and half the risk for major bleeding compared with noncarriers. This finding may contribute to decision-making regarding anticoagulation duration in selected factor V Leiden carriers with venous thromboembolism.
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Affiliation(s)
- Inna Tzoran
- Department of Haematology and Bone Marrow Transplantation, Rambam Health Care Campus, Haifa, Israel.
| | - Manolis Papadakis
- Haematology and Hemostasis Unit, Hospital Papageorgiou, Saloniki, Greece
| | - Benjamin Brenner
- Department of Haematology and Bone Marrow Transplantation, Rambam Health Care Campus, Haifa, Israel
| | - Ángeles Fidalgo
- Department of Internal Medicine, Hospital Universitario de Salamanca, Spain
| | - Agustina Rivas
- Department of Pneumonology, Hospital Universitario Araba, Álava, Spain
| | - Philip S Wells
- Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ontario, Canada
| | - Olga Gavín
- Department of Haematology, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | | | - Farès Moustafa
- Department of Emergency, Clermont-Ferrand University Hospital, France
| | - Manuel Monreal
- Department of Internal Medicine, Hospital Universitario Germans Trias i Pujol de Badalona, Universidad Católica de Murcia, Barcelona, Spain
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Mahé I, Chidiac J, Bertoletti L, Font C, Trujillo-Santos J, Peris M, Pérez Ductor C, Nieto S, Grandone E, Monreal M, Arcelus J, Ballaz A, Barba R, Barrón M, Barrón-Andrés B, Bascuñana J, Blanco-Molina A, Bueso T, Casado I, Culla A, de Miguel J, del Toro J, Díaz-Peromingo J, Falgá C, Fernández-Capitán C, Font C, Font L, Gallego P, García-Bragado F, García-Brotons P, Gómez V, González J, Grau E, Grimón A, Guirado L, Gutiérrez J, Hernández G, Hernández-Blasco L, Isern V, Jara-Palomares L, Jaras M, Jiménez D, Lacruz B, Lecumberri R, Lobo J, López-Jiménez L, López-Reyes R, López-Sáez J, Lorente M, Lorenzo A, Madridano O, Marchena P, Martín-Antorán J, Martín-Martos F, Monreal M, Morales M, Nauffal D, Nieto J, Nieto S, Núñez M, Otalora S, Otero R, Pagán B, Pedrajas J, Pérez C, Pérez G, Peris M, Porras J, Ramírez L, Reig O, Riera A, Rivas A, Rodríguez-Dávila M, Rosa V, Ruiz-Artacho P, Ruiz-Giménez N, Ruiz-Martínez C, Sampériz A, Sala C, Sanz O, Soler S, Sopeña B, Suarez I, Suriñach J, Tiberio G, Tolosa C, Trujillo-Santos J, Uresandi F, Valle R, Vela J, Villalta J, Malfante P, Verhamme P, Wells P, Hirmerova J, Malý R, Tomko T, Salgado E, Bertoletti L, Bura-Riviere A, Farge-Bancel D, Hij A, Mahé I, Merah A, Papadakis M, Braester A, Brenner B, Tzoran I, Apollonio A, Barillari G, Candeloro G, Ciammaichella M, Di Micco P, Ferrazzi P, Grandone E, Lessiani G, Lodigiani C, Mastroiacovo D, Pace F, Pinelli M, Prandoni P, Rota L, Tiraferri E, Tufano A, Visonà A, Belovs A, Skride A, Moreira M, Ribeiro J, Sousa M, Bosevski M, Zdraveska M, Alatri A, Bounameaux H, Calanca L, Mazzolai L, Serrano J, Decousus H, Reis A. The Clinical Course of Venous Thromboembolism May Differ According to Cancer Site. Am J Med 2017; 130:337-347. [PMID: 27884650 DOI: 10.1016/j.amjmed.2016.10.017] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 09/21/2016] [Accepted: 10/24/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND We hypothesized that the clinical course of venous thromboembolism in patients with active cancer may differ according to the specificities of primary tumor site. AIM AND METHODS We used data from RIETE (international registry of patients with venous thromboembolism) to compare the clinical venous thromboembolism-related outcomes during the course of anticoagulation in patients with one of the 4 more frequent cancers (breast, prostate, colorectal, or lung cancer). RESULTS As of September 2014, 3947 cancer patients were recruited, of whom 938 had breast, 629 prostate, 1189 colorectal, and 1191 lung cancer. Overall, 55% had metastatic disease (42%, 36%, 53%, and 72%, respectively). During the course of anticoagulant therapy (mean duration, 139 days), the rate of thromboembolic recurrences was similar to the rate of major bleeding in patients with breast (5.6 [95% confidence interval (CI), 3.8-8.1] vs 4.1 [95% CI, 2.7-5.9] events per 100 patient-years) or colorectal cancer (10 [95% CI, 7.6-13] vs 12 [95% CI, 9.4-15] per 100 patient-years). In contrast, in patients with prostate cancer, the rate of venous thromboembolic recurrences was half the rate of major bleeding (6.9 [95% CI, 4.4-10] vs 13 [95% CI, 9.2-17] events per 100 patient-years), whereas in those with lung cancer, the rate of thromboembolic recurrences was twofold higher than the rate of major bleeding (27 [95% CI, 22-23] vs 11 [95% CI, 8.6-15] per 100 patient-years). CONCLUSIONS Significant differences in the clinical profile of venous thromboembolic-related outcomes were observed according to the site of cancer. These findings suggest the development of cancer-specific anticoagulant strategies as an area for further research.
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Affiliation(s)
- Isabelle Mahé
- Department of Internal Medicine, Hôpital Louis Mourier, Investigation Network on Venous Thrombo-embolism (INNOVTE), Colombes (APHP), University Paris 7, EA REMES 7334 France.
| | - Jean Chidiac
- Department of Internal Medicine, Hôpital Louis Mourier, Investigation Network on Venous Thrombo-embolism (INNOVTE), Colombes (APHP), University Paris 7, EA REMES 7334 France
| | - Laurent Bertoletti
- Department of Vascular and Therapeutic Medicine, CHU Saint-Etienne, Hôpital Nord, French Clinical Research Infrastructure Network (F-CRIN), INNOVTE
| | - Carme Font
- Department of Medical Oncology, IDIBAPS/Translational Genomics and Targeted Therapeutics in Solid Tumors, Hospital Clinic de Barcelona, Spain
| | - Javier Trujillo-Santos
- Department of Internal Medicine, Complejo Hospitalario Universitario de Cartagena, Murcia, Spain
| | - Marisa Peris
- Department of Internal Medicine, Hospital Provincial Castellon; CEU Cardenal Herrero University, Spain
| | - Cristina Pérez Ductor
- Department of Emergency Medicine, Hospital Universitario Doctor Peset, Valencia, Spain
| | - Santiago Nieto
- Department of Haematology, Hospital de la Vega Lorenzo Guirao, Murcia, Spain
| | - Elvira Grandone
- Atherosclerosis and Thrombosis Unit, Casa Sollievo Della Sofferenza, Foggia, Italy
| | - Manuel Monreal
- Department of Internal Medicine, Hospital Universitari Germans Trias i Pujol, Badalona, Universidad Católica de Murcia, Spain
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Chiarello D, Pardo F, Salsoso R, Fuenzalida B, Gutiérrez J, Leiva A, Sobrevia L. Effect of MgSO 4 on protein expression and exosomes release from human placental microvascular endothelial cells from late-onset preeclampsia. Placenta 2017. [DOI: 10.1016/j.placenta.2017.01.097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Newton DH, Monreal Bosch M, Amendola M, Wolfe L, Perez Ductor C, Lecumberri R, Levy MM, Monreal M, Decousus H, Prandoni P, Brenner B, Barba R, Di Micco P, Bertoletti L, Tzoran I, Reis A, Bosevski M, Bounameaux H, Malý R, Wells P, Papadakis M, Agüero R, Aibar M, Alfonso M, Aranda R, Arcelus J, Barba R, Barrón M, Barrón-Andrés B, Bascuñana J, Binetti J, Blanco-Molina A, Bueso T, Cañas I, Carmona F, Chic N, Culla A, del Pozo R, del Toro J, Díaz-Pedroche M, Díaz-Peromingo J, Falgá C, Fernández-Aracil C, Fernández-Capitán C, Fidalgo M, Font C, Font L, Gallego P, García M, García-Bragado F, Gómez V, González J, Grau E, Grimón A, Guirado L, Gutiérrez J, Hernández-Comes G, Hernández-Blasco L, Jara-Palomares L, Jaras M, Jiménez D, Joya M, Lecumberri R, Lobo J, López-Jiménez L, López-Reyes R, López-Sáez J, Lorente M, Lorenzo A, Manrique-Abos I, Marchena P, Martín M, Martín-Antorán J, Martín-Martos F, Monreal M, Nieto J, Nieto S, Núñez A, Núñez M, Otalora S, Otero R, Pagán B, Pedrajas J, Pérez G, Pérez I, Pérez-Ductor C, Peris M, Porras J, Reig O, Riera-Mestre A, Riesco D, Rivas A, Rodríguez-Dávila M, Rosa V, Rosillo-Hernández E, Ruiz-Artacho P, Ruiz-Giménez N, Sahuquillo J, Sala-Sainz M, Sampériz A, Sánchez R, Sanz O, Soler S, Sopeña B, Suriñach J, Tolosa C, Trujillo-Santos J, Uresandi F, Valero B, Valle R, Vela J, Vidal G, Villalta J, Vanassche T, Verhamme P, Wells P, Hirmerova J, Malý R, Salgado E, Bertoletti L, Bura-Riviere A, Champion K, Farge-Bancel D, Hij A, Mahé I, Merah A, Papadakis M, Braester A, Brenner B, Tzoran I, Antonucci G, Barillari G, Bilora F, Ciammaichella M, Dentali F, Di Micco P, Duce R, Ferrazzi P, Grandone E, Lodigiani C, Maida R, Pace F, Pesavento R, Poggio R, Prandoni P, Rota L, Tiraferri E, Tonello D, Tufano A, Visonà A, Zalunardo B, Drucka E, Kigitovica D, Skride A, Ramos A, Ribeiro J, Sousa M, Bosevski M, Zdraveska M, Bounameaux H, Erdmann A, Mazzolai L, Ney B. Analysis of noncatheter-associated upper extremity deep venous thrombosis from the RIETE registry. J Vasc Surg Venous Lymphat Disord 2017; 5:18-24.e1. [DOI: 10.1016/j.jvsv.2016.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 08/12/2016] [Indexed: 11/25/2022]
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Aragón M, Gutiérrez J, Klee R, Lavela P, Alcántara R, Tirado J. On the effect of carbon content for achieving a high performing Na3V2(PO4)3/C nanocomposite as cathode for sodium-ion batteries. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.11.064] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Elvira Partida L, Fernández M, Gutiérrez J, Esnal A, Benavides J, Pérez V, de la Torre A, Álvarez M, Esperón F. Detection of Bovine Viral Diarrhoea Virus 2 as the Cause of Abortion Outbreaks on Commercial Sheep Flocks. Transbound Emerg Dis 2016; 64:19-26. [DOI: 10.1111/tbed.12599] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Indexed: 11/28/2022]
Affiliation(s)
| | - M. Fernández
- Animal Health Department; Instituto de Ganadería de Montaña (CSIC-ULE); University of León; León Spain
| | | | - A. Esnal
- Analitica Veterinaria; Vizcaya Spain
| | - J. Benavides
- Animal Health Department; Instituto de Ganadería de Montaña (CSIC-ULE); University of León; León Spain
| | - V. Pérez
- Animal Health Department; Instituto de Ganadería de Montaña (CSIC-ULE); University of León; León Spain
| | - A. de la Torre
- Centro de Investigación en Sanidad Animal (INIA-CISA); Valdeolmos Madrid Spain
| | - M. Álvarez
- Animal Health Department; University of León; León Spain
| | - F. Esperón
- Centro de Investigación en Sanidad Animal (INIA-CISA); Valdeolmos Madrid Spain
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Sanhueza C, Araos J, Naranjo L, Villalobos R, Westermeier F, Salomon C, Beltrán AR, Ramírez MA, Gutiérrez J, Pardo F, Leiva A, Sobrevia L. Modulation of intracellular pH in human ovarian cancer. Curr Mol Med 2016; 16:23-32. [PMID: 26695697 DOI: 10.2174/1566524016666151222143437] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 10/29/2015] [Accepted: 12/18/2015] [Indexed: 11/22/2022]
Abstract
To sustain tumor growth, the cancer cells need to adapt to low levels of oxygen (i.e., hypoxia) in the tumor tissue and to the tumor-associated acidic microenvironment. In this phenomenon, the activation of the sodium/proton exchanger 1 (NHE1) at the plasma membrane and the hypoxia-inducible factor (HIF) are critical for the control of the intracellular pH (pHi) and for hypoxia adaptation, respectively. Interestingly, both of these mechanisms end in sustaining cancer cell proliferation. However, regulatory mechanisms of pHi in human ovary tissue and in malignant ascites are unknown. Additionally, a potential role of NHE1 in the modulation of H(+) efflux in human ovarian cancer cells is unknown. In this review, we discussed the characteristics of tumor microenvironment of primary human ovarian tumors and tumor ascites, in terms of pHi regulatory mechanisms and oxygen level. The findings described in the literature suggest that NHE1 may likely play a role in pHi regulation and cell proliferation in human ovarian cancer, potentially involving HIF2α activation. Since ovarian cancer is the fifth cause of prevalence of women cancer in Chile and is usually of late diagnosis, i.e., when the disease jeopardizes peritoneal cavity and other organs, resulting in reduced patient survival, new efforts are required to improve patient-life span and for a better understanding of the pathophysiology of the disease. The potential advantage of the use of amiloride and amiloride-derivatives for cancer treatment in terms of NHE1 expression and activity is also discussed as a therapeutic approach in human ovarian cancer.
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Affiliation(s)
- C Sanhueza
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, P.O. Box 114-D, Santiago 8330024, Chile.
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Abdo A, Pérez-Bernal J, Hinojosa R, Porras F, Castellanos R, Gómez F, Gutiérrez J, Castellanos A, Leal G, Espinosa N, Gómez-Bravo M. Cerebral Hemodynamics Patterns by Transcranial Doppler in Patients With Acute Liver Failure. Transplant Proc 2016; 47:2647-9. [PMID: 26680061 DOI: 10.1016/j.transproceed.2015.10.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 09/26/2015] [Accepted: 10/06/2015] [Indexed: 01/08/2023]
Abstract
INTRODUCTION About half of patients with acute liver failure (ALF) show clinical signs of cerebral edema and intracranial hypertension. Neuroimaging diagnostics and electroencephalography have poor correlation with intracranial pressure measurement. OBJECTIVE The objective of this study was to characterize the cerebral hemodynamics patterns with transcranial Doppler (TCD) sonography in patients with ALF. METHOD We studied 21 patients diagnosed with ALF, admitted to the intensive care unit (ICU) at the Centro de Investigaciones Médico Quirúrgicas of Cuba. All of these patients had a TCD performed on arrival at ICU, evaluating the following: systolic (SV), diastolic (DV), and medium (MV) flows velocities and pulsatility index (PI) in right middle cerebral artery (RMCA) via temporal windows. RESULTS The sonographic patterns of cerebral hemodynamics were as follows: low-flow, 12 patients (57.1%); high resistance, 5 patients (23.8%); and hyperemic, 4 patients (19%). Patients who died while waiting had lower MV RMCA (56.1 vs 58.1 cm/s) and higher PI (1.71 vs 1.41) than patients who could undergo transplantation (P = .800 and P = .787, respectively). CONCLUSIONS In patients diagnosed with ALF admitted to the ICU the predominating cerebral hemodynamic pattern was low-flow with resistance increase. The TCD was shown to be a useful tool in the initial evaluation for prognosis and treatment.
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Affiliation(s)
- A Abdo
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba.
| | - J Pérez-Bernal
- Intensive Care Unit, Hospital Universitario Virgen del Rocío, Sevilla, España
| | - R Hinojosa
- Intensive Care Unit, Hospital Universitario Virgen del Rocío, Sevilla, España
| | - F Porras
- Intensive Care Unit, Hospital Universitario Virgen del Rocío, Sevilla, España
| | - R Castellanos
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - F Gómez
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - J Gutiérrez
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - A Castellanos
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - G Leal
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - N Espinosa
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - M Gómez-Bravo
- Liver Transplantation Unit, Hospital Universitario Virgen del Rocío, Sevilla, España
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de la Rosa-Trevín J, Quintana A, del Cano L, Zaldívar A, Foche I, Gutiérrez J, Gómez-Blanco J, Burguet-Castell J, Cuenca-Alba J, Abrishami V, Vargas J, Otón J, Sharov G, Vilas J, Navas J, Conesa P, Kazemi M, Marabini R, Sorzano C, Carazo J. Scipion: A software framework toward integration, reproducibility and validation in 3D electron microscopy. J Struct Biol 2016; 195:93-9. [DOI: 10.1016/j.jsb.2016.04.010] [Citation(s) in RCA: 356] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 04/18/2016] [Accepted: 04/19/2016] [Indexed: 12/13/2022]
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Westermeier F, Sáez T, Arroyo P, Toledo F, Gutiérrez J, Sanhueza C, Pardo F, Leiva A, Sobrevia L. Insulin receptor isoforms: an integrated view focused on gestational diabetes mellitus. Diabetes Metab Res Rev 2016; 32:350-65. [PMID: 26431063 DOI: 10.1002/dmrr.2729] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [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: 07/17/2015] [Revised: 09/14/2015] [Accepted: 09/27/2015] [Indexed: 12/17/2022]
Abstract
The human insulin receptor (IR) exists in two isoforms that differ by the absence (IR-A) or the presence (IR-B) of a 12-amino acid segment encoded by exon 11. Both isoforms are functionally distinct regarding their binding affinities and intracellular signalling. However, the underlying mechanisms related to their cellular functions in several tissues are only partially understood. In this review, we summarize the current knowledge in this field regarding the alternative splicing of IR isoform, tissue-specific distribution and signalling both in physiology and disease, with an emphasis on the human placenta in gestational diabetes mellitus (GDM). Furthermore, we discuss the clinical relevance of IR isoforms highlighted by findings that show altered insulin signalling due to differential IR-A and IR-B expression in human placental endothelium in GDM pregnancies. Future research and clinical studies focused on the role of IR isoform signalling might provide novel therapeutic targets for treating GDM to improve the adverse maternal and neonatal outcomes.
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Affiliation(s)
- F Westermeier
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Advanced Centre for Chronic Diseases (ACCDiS), Faculty of Chemical & Pharmaceutical Sciences and Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Faculty of Science, Universidad San Sebastián, Santiago, Chile
| | - T Sáez
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- University Medical Centre Groningen (UMCG), Faculty of Medicine, University of Groningen, Groningen, The Netherlands
| | - P Arroyo
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - F Toledo
- Department of Basic Sciences, Faculty of Sciences, Universidad del Bío-Bío, Chillán, Chile
| | - J Gutiérrez
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Cellular Signalling and Differentiation Laboratory (CSDL), School of Medical Technology, Health Sciences Faculty, Universidad San Sebastian, Santiago, Chile
| | - C Sanhueza
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - F Pardo
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - A Leiva
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - L Sobrevia
- Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Physiology, Faculty of Pharmacy, Universidad de Sevilla, Seville, Spain
- University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine and Biomedical Sciences, University of Queensland, Queensland, Australia
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Rojas C, Witting S, Ortega P, Faure F, Gutiérrez J. West syndrome in patients with down syndrome. Clinical description and management. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.09.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Affiliation(s)
- J. Morales
- Área de Biología Animal, Universidad de Salamanca, Salamanca, Spain
| | - J. Ruiz-Olmo
- Direcció General del Medi Natural, Barcelona, Spain
| | - M. Lizana
- Área de Biología Animal, Universidad de Salamanca, Salamanca, Spain
| | - J. Gutiérrez
- Área de Biología Animal, Universidad de Salamanca, Salamanca, Spain
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Gutiérrez J, Martins P, Gonçalves R, Sencadas V, Lasheras A, Lanceros-Mendez S, Barandiarán J. Synthesis, physical and magnetic properties of BaFe12O19/P(VDF-TrFE) multifunctional composites. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.06.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Romero-Vivas E, Von Borstel FD, Pérez-Estrada CJ, Torres-Ariño D, Villa-Medina JF, Gutiérrez J. On-water remote monitoring robotic system for estimating the patch coverage of Anabaena sp. filaments in shallow water. Environ Sci Process Impacts 2015; 17:1141-1149. [PMID: 25965101 DOI: 10.1039/c5em00097a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An on-water remote monitoring robotic system was developed for indirectly estimating the relative density of marine cyanobacteria blooms at the subtidal sandy-rocky beach in Balandra Cove, Baja California Sur, Mexico. The system is based on an unmanned surface vehicle to gather underwater videos of the seafloor for avoiding physical damage on Anabaena sp. cyanobacteria colonies, which grow in tufts of filaments weakly attached to rocks, seagrass, and macroalgae. An on-axis image stabilization mechanism was developed to support a camcorder and minimize wave perturbation while recording underwater digital images of the seafloor. Color image processing algorithms were applied to estimate the patch coverage area and density, since Anabaena sp. filaments exhibit a characteristic green tone. Results of field tests showed the feasibility of the robotic system to estimate the relative density, distribution, and coverage area of cyanobacteria blooms, preventing the possible impact of direct observation. The robotic system could also be used in surveys of other benthos in the sublittoral zone.
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Affiliation(s)
- E Romero-Vivas
- Engineering Group, Centro de Investigaciones Biológicas del Noroeste S.C, La Paz, BCS 23000, México.
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Villota C, Roa O, Díaz M, Gutiérrez J, Fernández-Avila D. AB1114 Prevalence of HLA-B27 in a Cohort of Transplant of a University Hospital in Colombia:. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.6173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Fernández-Avila D, Accini M, Tobόn M, Rodríguez V, Moreno S, Díaz M, Gutiérrez J. AB0249 Initial Validation of Compliance-Questionnaire-Rheumatology (CQR) In Patients with Rheumatoid Arthritis in BogotΆ, Colombia. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5711] [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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Sobrevia L, Sáez T, Salsoso R, Silva L, Villalobos R, Araos J, Naranjo L, Guzmán-Gutiérrez E, Gutiérrez J, Sanhueza C, Pardo F, Leiva A. Insulin restores L-arginine and adenosine transport requiring adenosine receptors espression in human fetoplacentaL endothelium from gestational diabetes mellitus. Placenta 2015. [DOI: 10.1016/j.placenta.2015.01.400] [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: 11/30/2022]
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Cruz-Garcia L, Sánchez-Gurmaches J, Monroy M, Gutiérrez J, Navarro I. Regulation of lipid metabolism and peroxisome proliferator-activated receptors in rainbow trout adipose tissue by lipolytic and antilipolytic endocrine factors. Domest Anim Endocrinol 2015; 51:86-95. [PMID: 25594950 DOI: 10.1016/j.domaniend.2014.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 07/29/2014] [Revised: 11/06/2014] [Accepted: 11/07/2014] [Indexed: 11/25/2022]
Abstract
The aim of this study was to determine the effects of growth hormone (GH) and insulin-like growth factor (IGF)-I on glycerol release and the regulation of IGF-I and IGF-II expression by GH in isolated rainbow trout adipocytes. Cells were also incubated with GH, tumor necrosis factor α (TNFα), or insulin to analyze the gene expression of peroxisome proliferator-activated receptors (PPARs) and lipid metabolism markers: hormone sensitive lipase, fatty acid synthase (FAS), and lipoprotein lipase. Complimentary in vivo experiments were performed by intraperitoneally administering insulin, TNFα, or lipopolysaccharide and subjecting the animals to fasting and refeeding periods. The results showed that IGF-I had an antilipolytic effect and GH had a lipolytic effect; the latter occurred independently of IGF modulation and in conjunction with a reduction in PPARα expression in adipocytes. The anabolic action of insulin was demonstrated through its upregulation of lipogenic genes such as lipoprotein lipase, FAS, and PPARγ, whereas GH, by contrast, inhibited FAS expression in adipose tissue. The gene transcription levels of PPARs changed differentially during fasting and refeeding, and the TNFα and/or lipopolysaccharide administration suggested that the regulation of PPARs helps maintain metabolic adipose tissue homeostasis in rainbow trout.
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Affiliation(s)
- L Cruz-Garcia
- Department of Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
| | - J Sánchez-Gurmaches
- Department of Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
| | - M Monroy
- Department of Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
| | - J Gutiérrez
- Department of Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
| | - I Navarro
- Department of Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain.
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Trujillo-Santos J, Lozano F, Lorente MA, Adarraga D, Hirmerova J, Del Toro J, Mazzolai L, Barillari G, Barrón M, Monreal M, Alcalde M, Andújar V, Arcelus J, Barba R, Barrón M, Barrón-Andrés B, Bascuñana J, Blanco-Molina A, Bueso T, Casado I, Climent A, Conget F, del Molino F, del Toro J, Falgá C, Fernández-Capitán C, Font L, Gallego P, García-Bragado F, Gómez V, González J, González-Bachs E, Grau E, Guijarro R, Guil M, Gutiérrez J, Jara-Palomares L, Jaras M, Jiménez D, Jiménez R, Lecumberri R, Lobo J, López-Jiménez L, López-Montes L, López-Reyes R, López-Sáez J, Lorente M, Lorenzo A, Luque J, Madridano O, Marchena P, Martín-Antorán J, Mellado M, Monreal M, Morales M, Nauffal D, Nieto J, Núñez M, Ogea J, Otero R, Pagán B, Pedrajas J, Pérez-Rus G, Peris M, Porras J, Pons I, Riera-Mestre A, Rivas A, Rodríguez-Dávila M, Román P, Rosa V, Ruiz-Giménez N, Ruiz J, Sabio P, Samperiz A, Sánchez R, Soler S, Suriñach J, Tiberio G, Trujillo-Santos J, Uresandi F, Valero B, Valle R, Vela J, Villalobos A, Malfante P, Verhamme P, Peerlinck K, Wells P, Malý R, Hirmerova J, Kaletova M, Tomko T, Bertoletti L, Bura-Riviere A, Farès M, Grange C, Mahe I, Merah A, Quere I, Schellong S, Papadakis M, Braester A, Brenner B, Tzoran I, Zeltser D, Apollonio A, Barillari G, Ciammaichella M, Di Micco P, Duce R, Guida A, Maida R, Pace F, Pasca S, Piovella C, Pesavento R, Poggio R, Prandoni P, Rota L, Tiraferri E, Tonello D, Tufano A, Visonà A, Zalunardo B, Almeida S, Leal-Seabra F, Sousa M, Bosevski M, Alatri A, Bounameaux H, Calanca L, Mazzolai L, Serrano J. A prognostic score to identify low-risk outpatients with acute deep vein thrombosis in the lower limbs. Am J Med 2015; 128:90.e9-15. [PMID: 25242230 DOI: 10.1016/j.amjmed.2014.08.023] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 08/18/2014] [Accepted: 08/19/2014] [Indexed: 02/01/2023]
Abstract
BACKGROUND No prior studies have identified which patients with deep vein thrombosis in the lower limbs are at a low risk for adverse events within the first week of therapy. METHODS We used data from the Registro Informatizado de la Enfermedad TromboEmbólica (RIETE) to identify patients at low risk for the composite outcome of pulmonary embolism, major bleeding, or death within the first week. We built a prognostic score and compared it with the decision to treat patients at home. RESULTS As of December 2013, 15,280 outpatients with deep vein thrombosis had been enrolled. Overall, 5164 patients (34%) were treated at home. Of these, 12 (0.23%) had pulmonary embolism, 8 (0.15%) bled, and 4 (0.08%) died. On multivariable analysis, chronic heart failure, recent immobility, recent bleeding, cancer, renal insufficiency, and abnormal platelet count independently predicted the risk for the composite outcome. Among 11,430 patients (75%) considered to be at low risk, 15 (0.13%) suffered pulmonary embolism, 22 (0.19%) bled, and 8 (0.07%) died. The C-statistic was 0.61 (95% confidence interval [CI], 0.57-0.65) for the decision to treat patients at home and 0.76 (95% CI, 0.72-0.79) for the score (P = .003). Net reclassification improvement was 41% (P < .001). Integrated discrimination improvement was 0.034 for the score and 0.015 for the clinical decision (P < .001). CONCLUSIONS Using 6 easily available variables, we identified outpatients with deep vein thrombosis at low risk for adverse events within the first week. These data may help to safely treat more patients at home. This score, however, should be validated.
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Affiliation(s)
- Javier Trujillo-Santos
- Department of Internal Medicine, Complejo Hospitalario Universitario de Cartagena, Murcia, Spain
| | - Francisco Lozano
- Department of Angiology and Vascular Surgery, Complejo Asistencial de Salamanca, Salamanca, Spain
| | - Manuel Alejandro Lorente
- Department of Internal Medicine, Hospital de la Agencia Valenciana de Salud Vega Baja, Alicante, Spain
| | - Dolores Adarraga
- Department of Internal Medicine, Hospital de Montilla, Córdoba, Spain
| | - Jana Hirmerova
- Department of Internal Medicine, University Hospital Plzen, Plzen, Czech Republic
| | - Jorge Del Toro
- Department of Internal Medicine, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Lucia Mazzolai
- Department of Angiology, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Giovanni Barillari
- Department of Internal Medicine, Ospedale S. Maria della Misericordia, Udine, Italy
| | - Manuel Barrón
- Department of Pneumonology, Hospital San Pedro, Logroño, La Rioja, Spain
| | - Manuel Monreal
- Department of Internal Medicine, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
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Gutiérrez J, Horrillo MC. Advances in artificial olfaction: sensors and applications. Talanta 2014; 124:95-105. [PMID: 24767451 DOI: 10.1016/j.talanta.2014.02.016] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [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: 10/23/2013] [Revised: 02/03/2014] [Accepted: 02/07/2014] [Indexed: 12/31/2022]
Abstract
The artificial olfaction, based on electronic systems (electronic noses), includes three basic functions that operate on an odorant: a sample handler, an array of gas sensors, and a signal-processing method. The response of these artificial systems can be the identity of the odorant, an estimate concentration of the odorant, or characteristic properties of the odour as might be perceived by a human. These electronic noses are bio inspired instruments that mimic the sense of smell. The complexity of most odorants makes characterisation difficult with conventional analysis techniques, such as gas chromatography. Sensory analysis by a panel of experts is a costly process since it requires trained people who can work for only relatively short periods of time. The electronic noses are easy to build, provide short analysis times, in real time and on-line, and show high sensitivity and selectivity to the tested odorants. These systems are non-destructive techniques used to characterise odorants in diverse applications linked with the quality of life such as: control of foods, environmental quality, citizen security or clinical diagnostics. However, there is much research still to be done especially with regard to new materials and sensors technology, data processing, interpretation and validation of results. This work examines the main features of modern electronic noses and their most important applications in the environmental, and security fields. The above mentioned main components of an electronic nose (sample handling system, more advanced materials and methods for sensing, and data processing system) are described. Finally, some interesting remarks concerning the strengths and weaknesses of electronic noses in the different applications are also mentioned.
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Affiliation(s)
- J Gutiérrez
- Grupo de I+D en Sensores (GRIDSEN), Instituto de Tecnologías Electrónicas y de la Información (ITEFI), CSIC, C/Serrano 144, 28006 Madrid, Spain
| | - M C Horrillo
- Grupo de I+D en Sensores (GRIDSEN), Instituto de Tecnologías Electrónicas y de la Información (ITEFI), CSIC, C/Serrano 144, 28006 Madrid, Spain.
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Silva M, Reis S, Lehmann CS, Martins P, Lanceros-Mendez S, Lasheras A, Gutiérrez J, Barandiarán JM. Optimization of the magnetoelectric response of poly(vinylidene fluoride)/epoxy/Vitrovac laminates. ACS Appl Mater Interfaces 2013; 5:10912-10919. [PMID: 24125528 DOI: 10.1021/am4031054] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The effect of the bonding layer type and piezoelectric layer thickness on the magnetoelectric (ME) response of layered poly(vinylidene fluoride) (PVDF)/epoxy/Vitrovac composites is reported. Three distinct epoxy types were tested, commercially known as M-Bond, Devcon, and Stycast. The main differences among them are their different mechanical characteristics, in particular the value of the Young modulus, and the coupling with the polymer and Vitrovac (Fe39Ni39Mo4Si6B12) layers of the laminate. The laminated composites prepared with M-Bond epoxy exhibit the highest ME coupling. Experimental results also show that the ME response increases with increasing PVDF thickness, the highest ME response of 53 V·cm(-1)·Oe(-1) being obtained for a 110 μm thick PVDF/M-Bond epoxy/Vitrovac laminate. The behavior of the ME laminates with increasing temperatures up to 90 °C shows a decrease of more than 80% in the ME response of the laminate, explained by the deteriorated coupling between the different layers. A two-dimensional numerical model of the ME laminate composite based on the finite element method was used to evaluate the experimental results. A comparison between numerical and experimental data allows us to select the appropriate epoxy and to optimize the piezoelectric PVDF layer width to maximize the induced magnetoelectric voltage. The obtained results show the critical role of the bonding layer and piezoelectric layer thickness in the ME performance of laminate composites.
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Affiliation(s)
- M Silva
- Centro/Departamento de Física, Universidade do Minho , 4710-057 Braga, Portugal
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Sánchez-Gurmaches J, Cruz-Garcia L, Ibarz A, Fernández-Borrás J, Blasco J, Gutiérrez J, Navarro I. Insulin, IGF-I, and muscle MAPK pathway responses after sustained exercise and their contribution to growth and lipid metabolism regulation in gilthead sea bream. Domest Anim Endocrinol 2013; 45:145-53. [PMID: 24011532 DOI: 10.1016/j.domaniend.2013.08.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [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: 01/10/2013] [Revised: 07/31/2013] [Accepted: 08/02/2013] [Indexed: 11/29/2022]
Abstract
Herein, we studied whether sustained exercise positively affects growth of gilthead sea bream by alterations in a) plasma concentrations of insulin and IGF-I, b) signaling pathways in muscle, or c) regulation of lipid metabolism. Specifically, we evaluated the effects of moderated swimming (1.5 body lengths per second; BL/s) on the circulating concentrations of insulin and IGF-I, morphometric parameters, and expression of genes related to lipid metabolism in gilthead sea bream (80-90 g BW). Exercise increased the specific growth rate (P < 0.05) and reduced the hepatosomatic index (P = 0.006). Plasma IGF-I concentrations increased in exercised fish (P = 0.037), suggesting a role for this endocrine factor in the control of muscular growth and metabolic homeostasis during swimming. The observed decrease in plasma insulin concentrations (P = 0.016) could favor the mobilization of tissue reserves in exercised fish. In this sense, the increase in liver fatty acid content (P = 0.041) and the changes in expression of peroxisome proliferator-activated receptors PPARα (P = 0.017) and PPARγ (P = 0.033) indicated a hepatic lipid mobilization. Concentration of glycogen in both white and red muscles was decreased (P = 0.021 and P = 0.017, respectively) in exercised (n = 12) relative to control (n = 12) gilthead sea bream, whereas concentrations of glucose (P = 0.016) and lactate (P = 0.0007) were decreased only in red muscle, indicating the use of these substrates. No changes in the glucose transporter and in lipoprotein lipase mRNA expression were found in any of the tissues studied. Exercised sea bream had decreased content of PPARβ mRNA in white and red muscle relative to control sea bream expression (P = 0.001 and P = 0.049, respectively). Mitogen-activated protein kinase phosphorylation was significantly down-regulated in both white and red muscles of exercised sea bream (P = 0.0374 and P = 0.0371, respectively). Tumor necrosis factor-α expression of white muscle was down-regulated in exercised gilthead sea bream (P = 0.045). Collectively, these results contribute to the knowledge base about hormonal regulation of growth and lipid metabolism in exercised gilthead sea bream.
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Affiliation(s)
- J Sánchez-Gurmaches
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Av. Diagonal 643, E-08028 Barcelona, Catalunya, Spain.
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Rubio MS, Torres N, Gutiérrez J, Méndez RD. Composition and sensory evaluation of lamb carcasses used for the traditional Mexican lamb dish, "barbacoa". Meat Sci 2013; 67:359-64. [PMID: 22061334 DOI: 10.1016/j.meatsci.2003.10.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2003] [Revised: 10/24/2003] [Accepted: 10/24/2003] [Indexed: 10/26/2022]
Abstract
The objective of this study was to determine the differences in carcass characteristics and sensory attributes of "barbacoa" (a traditional Mexican lamb dish), both of imported (New Zealand) and domestic lambs in Mexico. A total of 28 carcasses from Pelibuey, Pelibuey×Suffolk and imported lambs were used. Carcass composition was determined by dissection of primal cuts from the left half of each carcass. The "barbacoa" from each ovine group was prepared separately in order to perform a consumer sensory evaluation for aroma, taste and tenderness. Results showed that imported lambs had larger carcasses, greater fatness and had better conformation than national lambs. There was no difference between groups in terms of lean tissue percentage (muscle+others) or in total carcass fat. The sensory attributes of the "barbacoa" did not differ among breeds. Pelibuey lambs (rustic, prolific and adaptable to the wide variety of Mexican climates) show competitive production performance in relation to specialized breeds.
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Affiliation(s)
- M S Rubio
- Centro de Enseñanza Práctica e Investigación en Producción y Sanidad Animal, Facultad de Medicina Veterinaria Zootecnia, Universidad Nacional Autónoma de México, Cruz Blanca 486, Col. San Miguel Topilejo, México D.F., C.P. 14500, México
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Salmerón C, Acerete L, Gutiérrez J, Navarro I, Capilla E. Characterization and endocrine regulation of proliferation and differentiation of primary cultured preadipocytes from gilthead sea bream (Sparus aurata). Domest Anim Endocrinol 2013; 45:1-10. [PMID: 23535263 DOI: 10.1016/j.domaniend.2013.02.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 02/19/2013] [Accepted: 02/20/2013] [Indexed: 12/25/2022]
Abstract
A preadipocyte primary cell culture was established to gain knowledge about adipose tissue development in gilthead sea bream (Sparus aurata), one of the most extensively produced marine aquaculture species in the Mediterranean. The preadipocytes obtained from the stromal-vascular cell fraction of adipose tissue proliferated in culture, reaching confluence around day 8. At that time, the addition of an adipogenic medium promoted differentiation of the cells into mature adipocytes, which showed an enlarged cytoplasm filled with lipid droplets. First, cell proliferation and differentiation were analyzed under control and adipogenic conditions during culture development. Next, the effects of insulin, GH, and IGF-I on cell proliferation were evaluated at day 8. All peptides significantly stimulated proliferation of the cells after 48 h of incubation (P < 0.002 for GH and IGF-I and P < 0.05 for insulin), despite no differences were observed between the different doses tested. Subsequently, the effects of insulin and IGF-I maintaining differentiation when added to growth medium were studied at day 11, after 3 d of induction with adipogenic medium. The results showed that IGF-I is more potent than insulin enhancing differentiation (P < 0.01 for IGF-I compared with the control). In summary, a primary culture of gilthead sea bream preadipocytes has been characterized and the effects of several regulators of growth and development have been evaluated. This cellular system can be a good model to study the process of adipogenesis in fish, which may help improve the quality of the product in aquaculture.
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Affiliation(s)
- C Salmerón
- Department of Physiology and Immunology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, Barcelona 08028, Spain
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Enes P, Pousão-Ferreira P, Salmerón C, Capilla E, Navarro I, Gutiérrez J, Oliva-Teles A. Effect of guar gum on glucose and lipid metabolism in white sea bream Diplodus sargus. Fish Physiol Biochem 2013; 39:159-169. [PMID: 22763699 DOI: 10.1007/s10695-012-9687-0] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 06/23/2012] [Indexed: 06/01/2023]
Abstract
The aim of this study was to assess the role of soluble non-starch polysaccharide (guar gum) on white sea bream Diplodus sargus, glucose and lipid metabolism. A control diet was formulated to contain 40 % crude protein, 14 % crude lipids and 35 % pregelatinized maize starch, and three other diets were formulated similar to the control diet except for guar gum, which was included at 4 % (diet GG4), 8 % (diet GG8) or 12 % (diet GG12). Diets were fed to the fish for 9 weeks on a pair-feeding scheme. Guar gum had no effect on growth performance, feed efficiency, glycaemia, cholesterolaemia and plasma triacylglyceride levels. Hepatic glucokinase and pyruvate kinase activities, liver glycogen content and liver insulin-like growth factor-I gene expression were not affected by dietary guar gum, while fructose-1,6-bisphosphatase activity was lower in fish fed guar gum-supplemented diets. Hepatic glucose-6-phosphate dehydrogenase activity was higher in fish fed diets GG4 and GG8 than in the control group. Overall, data suggest that in contrast to mammals guar gum had no effect on white sea bream glucose utilization and in lowering plasma cholesterol and triacylglyceride levels. However, it seems to contribute to lower endogenous glucose production.
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Affiliation(s)
- P Enes
- CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal.
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Oakman C, Francis PA, Crown J, Quinaux E, Buyse M, De Azambuja E, Margeli Vila M, Andersson M, Nordenskjöld B, Jakesz R, Thürlimann B, Gutiérrez J, Harvey V, Punzalan L, Dell'orto P, Larsimont D, Steinberg I, Gelber RD, Piccart-Gebhart M, Viale G, Di Leo A. Overall survival benefit for sequential doxorubicin-docetaxel compared with concurrent doxorubicin and docetaxel in node-positive breast cancer--8-year results of the Breast International Group 02-98 phase III trial. Ann Oncol 2013; 24:1203-11. [PMID: 23293111 DOI: 10.1093/annonc/mds627] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Background In women with node-positive breast cancer, the Breast International Group (BIG) 02-98 tested the incorporation of docetaxel (Taxotere) into doxorubicin (Adriamycin)-based chemotherapy, and compared sequential and concurrent docetaxel. At 5 years, there was a trend for improved disease-free survival (DFS) with docetaxel. We present results at 8-year median follow-up and exploratory analyses within biologically defined subtypes. Methods Patients were randomly assigned to one of four treatments: (i) sequential control: doxorubicin (A) (75 mg/m(2)) × 4 →classical cyclophosphamide, methotrexate, 5-fluorouracil (CMF); (ii) concurrent control: doxorubicin, cyclophosphamide (AC)(60/600 mg/m(2)) × 4 →CMF; (iii) sequential docetaxel: A (75 mg/m(2)) × 3 → docetaxel (T) (100 mg/m(2)) × 3 → CMF and (iv) concurrent docetaxel: AT(50/75 mg/m(2)) × 4 →CMF. The primary comparison evaluated docetaxel efficacy regardless of the schedule. Exploratory analyses were undertaken within biologically defined subtypes. Results Two thousand eight hundred and eighty-seven patients were enrolled. After 93.4 months of median follow-up, there were 916 DFS events. For the primary comparison, there was no significant improvement in DFS from docetaxel [hazard ratio (HR) = 0.91, 95% confidence interval (CI) = 0.80-1.05, P = 0.187]. In secondary comparisons, sequential docetaxel significantly improved DFS compared with sequential control (HR = 0.81, 95% CI = 0.67-0.99, P = 0.036), and significantly improved DFS (HR = 0.84, 95% CI = 0.72-0.99, P = 0.035) and overall survival (OS) (HR = 0.79, 95% CI = 0.65-0.98, P = 0.028) compared with concurrent doxorubicin-docetaxel. Luminal-A disease had the best prognosis. HRs favored addition of sequential docetaxel in all subtypes, except luminal-A; but this observation was not statistically supported because of limited numbers. Conclusion With further follow-up, the sequential docetaxel schedule resulted in significantly better OS than concurrent doxorubicin-docetaxel, and continued to show better DFS than sequential doxorubicin-based control.
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Affiliation(s)
- C Oakman
- Sandro Pitigliani Medical Oncology Unit, Hospital of Prato, Istituto Toscano Tumori, Prato, Italy
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Santos JP, García M, Aleixandre M, Horrillo MC, Gutiérrez J, Sayago I, Fernández MJ, Arés L. Electronic nose for the identification of pig feeding and ripening time in Iberian hams. Meat Sci 2012; 66:727-32. [PMID: 22060883 DOI: 10.1016/j.meatsci.2003.07.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2001] [Revised: 04/12/2002] [Accepted: 07/23/2003] [Indexed: 11/12/2022]
Abstract
An electronic nose system to control the processing of dry-cured Iberian ham is presented. The sensors involved are tin oxide semiconductors thin films. They were prepared by RF sputtering. Some of the sensors were doped with metal catalysts as Pt and Pd, in order to improve the selectivity of the sensors. The multisensor with 16 semiconductor sensors, gave different responses from two types of dry-cured Iberian hams which differ in the feeding and curing time. The data has been analysed using the PCA (principal component analysis) and backpropagation and probabilistic neural networks. The analysis shows that different types of Iberian ham can be discriminated and identified successfully.
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Affiliation(s)
- J P Santos
- Laboratorio de Sensores, Instituto de Fı́sica Aplicada, IFA- CSIC, Serrano144, 28006 Madrid, Spain
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Svalov AV, Balymov KG, Fernández A, Orue I, Larrañaga A, Vas'kovsky VO, Gutiérrez J, Kurlyandskaya GV. Influence of temperature on structure and magnetic properties of exchange coupled TbCo/FeNi bilayers. J Nanosci Nanotechnol 2012; 12:7566-7570. [PMID: 23035518 DOI: 10.1166/jnn.2012.6531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Among amorphous films of rare earth-transition metal (RE-TM) alloys as exchange-biasing layers in magnetoresistive heads and spin-valve sensors, the amorphous Tb-Co films have most high practical potential. In the present work the influence of the temperature and the heat treatment parameters on the structure and magnetic properties was studied for exchange bias FeNi/Tb35Co65 bilayers annealed in vacuum or a nitrogen flow. A simple explanation of the dependence of the magnetic properties on the temperature and the heat treatment parameters connected with structural changes in each one of the layers was proposed.
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Affiliation(s)
- A V Svalov
- Departamento de Electricidad y Electrónica, Universidad del País Vasco (UPV/EHU), R Box 644, 48080 Bilbao, Spain
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Enes P, Peres H, Pousão-Ferreira P, Sanchez-Gurmaches J, Navarro I, Gutiérrez J, Oliva-Teles A. Glycemic and insulin responses in white sea bream Diplodus sargus, after intraperitoneal administration of glucose. Fish Physiol Biochem 2012; 38:645-652. [PMID: 21830035 DOI: 10.1007/s10695-011-9546-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Accepted: 07/30/2011] [Indexed: 05/31/2023]
Abstract
A glucose tolerance test was performed in white sea bream Diplodus sargus, juveniles to evaluate the effect of a glucose load on plasma glucose, insulin, triacylglyceride levels, and on liver glycogen storage in order to study the capability of glucose utilization by this species. After being fasted for 48 h, fish were intraperitoneally injected with either 1 g of glucose per kg body weight or a saline solution. Plasma glucose rose from a basal level of 4 to a peak of 18-19 mmol l(-1), 2-4 h after glucose injection and fish exhibited hyperglycemia for 9 h. An insulin peak (from 0.5 to 0.8 ng ml(-1)) was observed 2-6 h after glucose injection, and basal value was attained within 9 h. Liver glycogen peaked 6-12 h after the glucose load and thereafter decreased to the basal value which was attained 24 h after injection. Plasma triacylglycerides in glucose-injected fish were only significantly higher than the basal value 12 h after injection. Glucose-injected fish generally showed lower plasma triacylglyceride levels than control fish. Our results indicate that under these experimental conditions, glucose acts as an insulin secretagogue in white sea bream juveniles. Moreover, insulin may have contributed to restoring basal plasma glucose levels by enhancing glucose uptake in the liver. Further studies are needed to corroborate the lipolytic action of glucose. Clearance of glucose from the blood stream was fast, comparatively to other species, indicating that white sea bream has a good capability of glucose utilization.
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Affiliation(s)
- P Enes
- Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas 289, Porto, Portugal.
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Allepuz A, Gabriël S, Dorny P, Napp S, Jansen F, Vilar M, Vives L, Picart L, Ortuño A, Gutiérrez J, Casal J. Comparison of bovine cysticercosis prevalence detected by antigen ELISA and visual inspection in the North East of Spain. Res Vet Sci 2012; 92:393-5. [DOI: 10.1016/j.rvsc.2011.03.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Revised: 02/16/2011] [Accepted: 03/10/2011] [Indexed: 11/28/2022]
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Llordés A, Palau A, Gázquez J, Coll M, Vlad R, Pomar A, Arbiol J, Guzmán R, Ye S, Rouco V, Sandiumenge F, Ricart S, Puig T, Varela M, Chateigner D, Vanacken J, Gutiérrez J, Moshchalkov V, Deutscher G, Magen C, Obradors X. Nanoscale strain-induced pair suppression as a vortex-pinning mechanism in high-temperature superconductors. Nat Mater 2012; 11:329-336. [PMID: 22327747 DOI: 10.1038/nmat3247] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 01/11/2012] [Indexed: 05/31/2023]
Abstract
Boosting large-scale superconductor applications require nanostructured conductors with artificial pinning centres immobilizing quantized vortices at high temperature and magnetic fields. Here we demonstrate a highly effective mechanism of artificial pinning centres in solution-derived high-temperature superconductor nanocomposites through generation of nanostrained regions where Cooper pair formation is suppressed. The nanostrained regions identified from transmission electron microscopy devise a very high concentration of partial dislocations associated with intergrowths generated between the randomly oriented nanodots and the epitaxial YBa(2)Cu(3)O(7) matrix. Consequently, an outstanding vortex-pinning enhancement correlated to the nanostrain is demonstrated for four types of randomly oriented nanodot, and a unique evolution towards an isotropic vortex-pinning behaviour, even in the effective anisotropy, is achieved as the nanostrain turns isotropic. We suggest a new vortex-pinning mechanism based on the bond-contraction pairing model, where pair formation is quenched under tensile strain, forming new and effective core-pinning regions.
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Affiliation(s)
- A Llordés
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Catalonia, Spain
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