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Expósito-Suárez VM, Suárez-Navarro JA, Aguado-Herreros CM, Sanz MB, Suárez-Navarro MJ, Caro A. Increasing the recovery and selectivity of 238U, 235U, and 234U extraction with tri-n-butyl phosphate in mine tailing samples with a high copper content. Anal Chim Acta 2023; 1259:341183. [PMID: 37100480 DOI: 10.1016/j.aca.2023.341183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 03/26/2023] [Accepted: 04/05/2023] [Indexed: 04/28/2023]
Abstract
Abandoned Cu mine tailings may be associated high concentrations of U. However, the presence of stable cations such as Cu, Fe, Al, Ca, or Mg, etc. in high concentrations can reduce the chemical efficiency of the liquid-liquid extraction method with tri-n-butyl phosphate (TBP); it can also inhibit the electrodeposition of U on the stainless steel planchet where the sample is measured. In this work we studied an initial stage of complexation with ethylenediaminetetraacetic acid (EDTA) and a back extraction with different solutions: H2O, Na2CO3, and (NH4)2CO3 at room temperature and at 80 °C. The sensitivity of the method was 4.9·10-4 Bq for 238U and 234U, and 2.3·10-5 Bq for 235U. The validation of the method achieved 95% of the results when using a |ζ-score| ≤ ± 2.0 and a relative bias (RB[%]) ≤ ± 20% as the acceptance criteria. The recoveries obtained with the proposed method were higher than those achieved with the extraction method without initial complexation and re-extraction with H2O for water samples. Finally, this method was applied in practice to study the tailing of an abandoned Cu mine and the activity concentrations of 238U and 235U were compared with those obtained by gamma spectrometry for 234Th and 235U. The means and variances of both methods showed no significant differences between these two isotopes.
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Affiliation(s)
| | | | | | - M B Sanz
- CIEMAT, Avenida Complutense 40, 28040, Madrid, Spain
| | - M J Suárez-Navarro
- Universidad Politécnica de Madrid (UPM), E.T.S.I. Caminos, Canales y Puertos, Professor Aranguren s/n, 28040, Madrid, Spain
| | - A Caro
- CIEMAT, Avenida Complutense 40, 28040, Madrid, Spain
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2
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Suárez-Navarro JA, Gil-Pacheco E, Expósito-Suárez VM, Gómez-Mancebo MB, Vicente-Prieto N, García-Gómez H, Suárez-Navarro MJ, Sánchez-González SM, Caro A, Hernáiz G, Barragán M, Cid-Morillo C. Influence of soil chemical composition on U, 226Ra and 210Pb uptake in leaves and fruits of Quercus ilex L. J Environ Radioact 2023; 264:107187. [PMID: 37186982 DOI: 10.1016/j.jenvrad.2023.107187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 03/03/2023] [Accepted: 04/18/2023] [Indexed: 05/17/2023]
Abstract
To determine their transfer factors, activity concentrations of natural radionuclides were measured in the leaves and acorns of holm oak (Quercus ilex L.) trees collected from seven locations with different soil properties and radionuclide activity concentrations. The chemical and mineralogical compositions of the soils were also analysed to investigate the effect these had on radionuclide absorption by the trees. Soil chemistry showed significant effects on radionuclide incorporation into Quercus ilex L. tissues. A significant relationship was established between activity concentrations and soil content of Ca and P with 238U and 226Ra in the leaves and acorns of Quercus ilex L. Differentiated transfer was found for 40K, which showed greater transfer to the leaves than the other radionuclides. The activity concentration of U and 226Ra was higher in the fruits than in the leaves, with the opposite effect being observed for 40K. The risk of U and 226Ra transfer into the food chain through acorn consumption by livestock is predicted to increase in soils poor in Ca and rich in P.
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Affiliation(s)
- J A Suárez-Navarro
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain.
| | - E Gil-Pacheco
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), CSIC, Consejo Superior de Investigaciones Científicas, C/Cordel de Merinas, 40, 37008, Salamanca, Spain
| | - V M Expósito-Suárez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - M B Gómez-Mancebo
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | | | - H García-Gómez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - M J Suárez-Navarro
- Universidad Politécnica de Madrid (UPM), Departamento de Hidráulica, Energía y Medioambiente, E.T.S.I. Caminos, Canales y Puertos, Profesor Aranguren s/n, 28040, Madrid, Spain
| | - S M Sánchez-González
- Universidad Europea Miguel de Cervantes, C/Padre Julio Chevalier, 2, 47012, Valladolid, Spain
| | - A Caro
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - G Hernáiz
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - M Barragán
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - C Cid-Morillo
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
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Serra-Aracil X, Pericay C, Badia-Closa J, Golda T, Biondo S, Hernández P, Targarona E, Borda-Arrizabalaga N, Reina A, Delgado S, Vallribera F, Caro A, Gallego-Plazas J, Pascual M, Álvarez-Laso C, Guadalajara-Labajo HG, Mora-Lopez L. Short-term outcomes of chemoradiotherapy and local excision versus total mesorectal excision in T2-T3ab,N0,M0 rectal cancer: a multicentre randomised, controlled, phase III trial (the TAU-TEM study). Ann Oncol 2023; 34:78-90. [PMID: 36220461 DOI: 10.1016/j.annonc.2022.09.160] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [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: 08/01/2022] [Revised: 09/23/2022] [Accepted: 09/27/2022] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND The standard treatment of T2-T3ab,N0,M0 rectal cancers is total mesorectal excision (TME) due to the high recurrence rates recorded with local excision. Initial reports of the combination of pre-operative chemoradiotherapy (CRT) and transanal endoscopic microsurgery (TEM) have shown reductions in local recurrence. The TAU-TEM study aims to demonstrate the non-inferiority of local recurrence and the improvement in morbidity achieved with CRT-TEM compared with TME. Here we describe morbidity rates and pathological outcomes. PATIENTS AND METHODS This was a prospective, multicentre, randomised controlled non-inferiority trial including patients with rectal adenocarcinoma staged as T2-T3ab,N0,M0. Patients were randomised to the CRT-TEM or the TME group. Patients included, tolerance of CRT and its adverse effects, surgical complications (Clavien-Dindo and Comprehensive Complication Index classifications) and pathological results (complete response in the CRT-TEM group) were recorded in both groups. Patients attended follow-up controls for local and systemic relapse. TRIAL REGISTRATION NCT01308190. RESULTS From July 2010 to October 2021, 173 patients from 17 Spanish hospitals were included (CRT-TEM: 86, TME: 87). Eleven were excluded after randomisation (CRT-TEM: 5, TME: 6). Modified intention-to-treat analysis thus included 81 patients in each group. There was no mortality after CRT. In the CRT-TEM group, one patient abandoned CRT, 1/81 (1.2%). The CRT-related morbidity rate was 29.6% (24/81). Post-operative morbidity was 17/82 (20.7%) in the CRT-TEM group and 41/81 (50.6%) in the TME group (P < 0.001, 95% confidence interval 42.9% to 16.7%). One patient died in each group (1.2%). Of the 81 patients in the CRT-TEM group who received the allocated treatment, 67 (82.7%) underwent organ preservation. Pathological complete response in the CRT-TEM group was 44.3% (35/79). In the TME group, pN1 were found in 17/81 (21%). CONCLUSION CRT-TEM treatment obtains high pathological complete response rates (44.3%) and a high CRT compliance rate (98.8%). Post-operative complications and hospitalisation rates were significantly lower than those in the TME group. We await the results of the follow-up regarding cancer outcomes and quality of life.
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Affiliation(s)
- X Serra-Aracil
- Coloproctology Unit, Parc Tauli University Hospital, Sabadell, Institut d'investigació i innovació Parc Tauli I3PT, Department of Surgery, Universitat Autònoma de Barcelona, Barcelona.
| | - C Pericay
- Medical Oncology Department, Parc Tauli University Hospital, Sabadell, Institut d'investigació i innovació Parc Tauli I3PT, Barcelona
| | - J Badia-Closa
- Coloproctology Unit, Parc Tauli University Hospital, Sabadell, Institut d'investigació i innovació Parc Tauli I3PT, Department of Surgery, Universitat Autònoma de Barcelona, Barcelona
| | - T Golda
- Colorectal Unit, General and Digestive Surgery Department, Bellvitge University Hospital, Barcelona
| | - S Biondo
- Colorectal Unit, General and Digestive Surgery Department, Bellvitge University Hospital, Barcelona
| | - P Hernández
- Colorectal Unit, General and Digestive Surgery Department, Santa Creu i Sant Pau University Hospital, Barcelona
| | - E Targarona
- Colorectal Unit, General and Digestive Surgery Department, Santa Creu i Sant Pau University Hospital, Barcelona
| | - N Borda-Arrizabalaga
- Servicio de Cirugía General y Digestiva, Hospital Universitario Donostia, Donostia, Gipuzkoa
| | - A Reina
- Unidad de Cirugía Colorrectal, Unidad de Gestión Clínica Cirugía y Area de Gestión Norte de Almería, Complejo Hospitalario Torrecárdenas, Almería
| | - S Delgado
- Colorectal Unit, General and Digestive Surgery Department, Mutua de Terrassa University Hospital, Terrassa, Barcelona
| | - F Vallribera
- Colorectal Unit, General and Digestive Surgery Department, Vall d'Hebron University Hospital, Departamento de Cirugía, Universitat Autònoma de Barcelona, Barcelona
| | - A Caro
- Colorectal Unit, General and Digestive Surgery Department, Joan XXIII University Hospital, Tarragona
| | - J Gallego-Plazas
- Medical Oncology, Hospital General Universitario de Elche (Alicante), Alicante
| | - M Pascual
- Colorectal Unit, General and Digestive Surgery Department, Del Mar University Hospital, Barcelona
| | - C Álvarez-Laso
- Colorectal Unit, General and Digestive Surgery Department, Hospital Universitario de Cabueñes, Gijón
| | - H G Guadalajara-Labajo
- Colorectal Unit, General and Digestive Surgery Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - L Mora-Lopez
- Coloproctology Unit, Parc Tauli University Hospital, Sabadell, Institut d'investigació i innovació Parc Tauli I3PT, Department of Surgery, Universitat Autònoma de Barcelona, Barcelona
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Expósito-Suárez VM, Suárez-Navarro JA, Vacas-Arquero P, Caro A. Application of gamma spectrometry for the characterization and influence of the archeological works of an archaeological site. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08708-0] [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: 12/26/2022]
Abstract
AbstractThe purpose of this study was the use of gamma spectrometry to characterize the archaeological site of Molina de Aragón, located in the province of Guadalajara in Spain. To do so, a set of samples with different historical influences have been selected. The samples were analyzed by gamma spectrometry with HPGe detectors, and by X-ray fluorescence, to know their chemical composition. The statistical study of the activity concentration of radionuclides from the natural radioactive series, 40K and 137Cs, was carried out using box-and-whisker plots, cluster analysis and principal component analysis (PCA). Likewise, the in-situ effective dose rates and the ones determined from the activity concentrations obtained by gamma spectrometry were evaluated to verify sampling reproducibility. The results obtained made it possible to classify the areas of Jewish and Christian influence based on the relationships between 232Th and 238U series and the possible influence of the archaeological works carried out in the study area. The least altered areas could also be identified from the activity concentrations of 137Cs and 210Pbex. Activity concentrations and effective dose rates were equivalent to the natural radioactive background of the Iberian Peninsula. PCA showed a correlation between Fe2O3, Al2O3 y ZrO2 and the natural radioactive series of thorium and uranium.
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Marco Hernández AV, Caro A, Montoya Filardi A, Tomás Vila M, Monfort S, Beseler Soto B, Nieto-Barceló JJ, Martínez F. Extending the clinical phenotype of SPTAN1: From DEE5 to migraine, epilepsy, and subependymal heterotopias without intellectual disability. Am J Med Genet A 2021; 188:147-159. [PMID: 34590414 DOI: 10.1002/ajmg.a.62507] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 11/08/2022]
Abstract
Mutations in SPTAN1 gene, encoding the nonerythrocyte αII-spectrin, are responsible for a severe developmental and epileptic encephalopathy (DEE5) and a wide spectrum of neurodevelopmental disorders, as epilepsy with or without intellectual disability (ID) or ID with cerebellar syndrome. A certain genotype-phenotype correlation has been proposed according to the type and location of the mutation. Herein, we report three novel cases with de novo SPTAN1 mutations, one of them associated to a mild phenotype not previously described. They range from (1) severe developmental encephalopathy with ataxia and a mild cerebellar atrophy, without epilepsy; (2) moderate intellectual disability, severe language delay, ataxia and tremor; (3) normal intelligence, chronic migraine, and generalized tonic-clonic seizures. Remarkably, all these patients showed brain MRI abnormalities, being of special interest the subependymal heterotopias detected in the latter patient. Thus we extend the SPTAN1-related phenotypic spectrum, both in its radiological and clinical involvement. Furthermore, after systematic analysis of all the patients so far reported, we noted an excess of male versus female patients (20:9, p = 0.04), more pronounced among the milder phenotypes. Consequently, some protection factor might be suspected among female carriers, which if confirmed should be considered when establishing the pathogenicity of milder genetic variants in this gene.
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Affiliation(s)
- Ana Victoria Marco Hernández
- Genetics Unit, Hospital Universitari i Politècnic La Fe, Valencia, Spain.,Neuropediatrics Section, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Alfonso Caro
- Genetics Unit, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | | | - Miguel Tomás Vila
- Neuropediatrics Section, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Sandra Monfort
- Genetics Unit, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Beatriz Beseler Soto
- Neuropediatrics Section, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | | | - Francisco Martínez
- Genetics Unit, Hospital Universitari i Politècnic La Fe, Valencia, Spain
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6
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Latypova X, Vincent M, Mollé A, Adebambo OA, Fourgeux C, Khan TN, Caro A, Rosello M, Orellana C, Niyazov D, Lederer D, Deprez M, Capri Y, Kannu P, Tabet AC, Levy J, Aten E, den Hollander N, Splitt M, Walia J, Immken LL, Stankiewicz P, McWalter K, Suchy S, Louie RJ, Bell S, Stevenson RE, Rousseau J, Willem C, Retiere C, Yang XJ, Campeau PM, Martinez F, Rosenfeld JA, Le Caignec C, Küry S, Mercier S, Moradkhani K, Conrad S, Besnard T, Cogné B, Katsanis N, Bézieau S, Poschmann J, Davis EE, Isidor B. Haploinsufficiency of the Sin3/HDAC corepressor complex member SIN3B causes a syndromic intellectual disability/autism spectrum disorder. Am J Hum Genet 2021; 108:929-941. [PMID: 33811806 DOI: 10.1016/j.ajhg.2021.03.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 03/18/2021] [Indexed: 11/28/2022] Open
Abstract
Proteins involved in transcriptional regulation harbor a demonstrated enrichment of mutations in neurodevelopmental disorders. The Sin3 (Swi-independent 3)/histone deacetylase (HDAC) complex plays a central role in histone deacetylation and transcriptional repression. Among the two vertebrate paralogs encoding the Sin3 complex, SIN3A variants cause syndromic intellectual disability, but the clinical consequences of SIN3B haploinsufficiency in humans are uncharacterized. Here, we describe a syndrome hallmarked by intellectual disability, developmental delay, and dysmorphic facial features with variably penetrant autism spectrum disorder, congenital malformations, corpus callosum defects, and impaired growth caused by disruptive SIN3B variants. Using chromosomal microarray or exome sequencing, and through international data sharing efforts, we identified nine individuals with heterozygous SIN3B deletion or single-nucleotide variants. Five individuals harbor heterozygous deletions encompassing SIN3B that reside within a ∼230 kb minimal region of overlap on 19p13.11, two individuals have a rare nonsynonymous substitution, and two individuals have a single-nucleotide deletion that results in a frameshift and predicted premature termination codon. To test the relevance of SIN3B impairment to measurable aspects of the human phenotype, we disrupted the orthologous zebrafish locus by genome editing and transient suppression. The mutant and morphant larvae display altered craniofacial patterning, commissural axon defects, and reduced body length supportive of an essential role for Sin3 function in growth and patterning of anterior structures. To investigate further the molecular consequences of SIN3B variants, we quantified genome-wide enhancer and promoter activity states by using H3K27ac ChIP-seq. We show that, similar to SIN3A mutations, SIN3B disruption causes hyperacetylation of a subset of enhancers and promoters in peripheral blood mononuclear cells. Together, these data demonstrate that SIN3B haploinsufficiency leads to a hitherto unknown intellectual disability/autism syndrome, uncover a crucial role of SIN3B in the central nervous system, and define the epigenetic landscape associated with Sin3 complex impairment.
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Affiliation(s)
- Xenia Latypova
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; Center for Human Disease Modeling, Duke University Medical Center, Durham, NC 27701, USA; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Marie Vincent
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Alice Mollé
- Université de Nantes, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, 44000 Nantes, France
| | | | - Cynthia Fourgeux
- Université de Nantes, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, 44000 Nantes, France
| | - Tahir N Khan
- Center for Human Disease Modeling, Duke University Medical Center, Durham, NC 27701, USA; Department of Biological Sciences, National University of Medical Sciences, 46000 Rawalpindi, Pakistan
| | - Alfonso Caro
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
| | - Monica Rosello
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
| | - Carmen Orellana
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
| | - Dmitriy Niyazov
- Department of Pediatrics, Ochsner Clinic, New Orleans, LA 70128, USA
| | - Damien Lederer
- Centre de Génétique Humaine, IPG, 6041 Gosselies, Belgium
| | - Marie Deprez
- Service de Neuropédiatrie, Clinique Saint Elizabeth, 5000 Namur, Belgium
| | - Yline Capri
- Service de Génétique Médicale, Hôpital Robert Debré, 75019 Paris, France
| | - Peter Kannu
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
| | | | - Jonathan Levy
- Service de Cytogénétique, Hôpital Robert Debré, 75019 Paris, France
| | - Emmelien Aten
- Department of Clinical Genetics, Leiden University Medical Center, 2333 Leiden, the Netherlands
| | - Nicolette den Hollander
- Department of Clinical Genetics, Leiden University Medical Center, 2333 Leiden, the Netherlands
| | - Miranda Splitt
- Northern Genetics Service, Institute of Genetic Medicine, Newcastle Upon Tyne NE1 3BZ, UK
| | - Jagdeep Walia
- Kingston General Hospital Research Institute, 76 Stuart Street, Kingston, ON K7L 2V7, Canada
| | - Ladonna L Immken
- Clinical Genetics, Dell Children's Medical Group, Austin, TX 78731, USA
| | - Pawel Stankiewicz
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | | | - Sharon Suchy
- GeneDx, 207 Perry Parkway, Gaithersburg, MD 20877, USA
| | - Raymond J Louie
- Greenwood Genetic Center, 106 Gregor Mendel Cir, Greenwood, SC 29646, USA
| | - Shannon Bell
- Greenwood Genetic Center, 106 Gregor Mendel Cir, Greenwood, SC 29646, USA
| | - Roger E Stevenson
- Greenwood Genetic Center, 106 Gregor Mendel Cir, Greenwood, SC 29646, USA
| | - Justine Rousseau
- Sainte-Justine Hospital, 3175, Cote-Sainte-Catherine, Montreal, QC, Canada
| | | | - Christelle Retiere
- Etablissement Français du Sang, 44000 Nantes, France; CRCINA, INSERM, CNRS, Université d'Angers, Université de Nantes, 44000 Nantes, France; LabEx IGO, Nantes 44000, France
| | - Xiang-Jiao Yang
- Rosalind & Morris Goodman Cancer Research Center and Department of Medicine, McGill University, Montreal, QC H3A 1A3, Canada
| | - Philippe M Campeau
- Sainte-Justine Hospital, 3175, Cote-Sainte-Catherine, Montreal, QC, Canada
| | - Francisco Martinez
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
| | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Cédric Le Caignec
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Sébastien Küry
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Sandra Mercier
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Kamran Moradkhani
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France
| | - Solène Conrad
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France
| | - Thomas Besnard
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Benjamin Cogné
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Nicholas Katsanis
- Center for Human Disease Modeling, Duke University Medical Center, Durham, NC 27701, USA; Advanced Center for Translational and Genetic Medicine, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA; Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Stéphane Bézieau
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Jeremie Poschmann
- Université de Nantes, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, 44000 Nantes, France.
| | - Erica E Davis
- Advanced Center for Translational and Genetic Medicine, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA; Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
| | - Bertrand Isidor
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France.
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7
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Tamm A, Caro M, Caro A, Samolyuk G, Klintenberg M, Correa AA. Langevin Dynamics with Spatial Correlations as a Model for Electron-Phonon Coupling. Phys Rev Lett 2018; 120:185501. [PMID: 29775371 DOI: 10.1103/physrevlett.120.185501] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 02/16/2018] [Indexed: 06/08/2023]
Abstract
Stochastic Langevin dynamics has been traditionally used as a tool to describe nonequilibrium processes. When utilized in systems with collective modes, traditional Langevin dynamics relaxes all modes indiscriminately, regardless of their wavelength. We propose a generalization of Langevin dynamics that can capture a differential coupling between collective modes and the bath, by introducing spatial correlations in the random forces. This allows modeling the electronic subsystem in a metal as a generalized Langevin bath endowed with a concept of locality, greatly improving the capabilities of the two-temperature model. The specific form proposed here for the spatial correlations produces a physical wave-vector and polarization dependency of the relaxation produced by the electron-phonon coupling in a solid. We show that the resulting model can be used for describing the path to equilibration of ions and electrons and also as a thermostat to sample the equilibrium canonical ensemble. By extension, the family of models presented here can be applied in general to any dense system, solids, alloys, and dense plasmas. As an example, we apply the model to study the nonequilibrium dynamics of an electron-ion two-temperature Ni crystal.
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Affiliation(s)
- A Tamm
- Quantum Simulations Group, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - M Caro
- Department of Mechanical Engineering, Virginia Polytechnic Institute, Arlington, Virginia 22033, USA
| | - A Caro
- George Washington University, Ashburn, Virginia 20147, USA
| | - G Samolyuk
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - M Klintenberg
- Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden
| | - A A Correa
- Quantum Simulations Group, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
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8
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Caballero D, Caro A, Antequera T, Pérez-Palacios T. Análisis no destructivo del lomo mediante imagen de resonancia magnética y fractales. ARCH ZOOTEC 2018. [DOI: 10.21071/az.v67isupplement.3598] [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: 11/23/2022] Open
Abstract
Las características de calidad de los productos cárnicos han sido tradicionalmente analizadas por métodos tediosos que además de consumir tiempo y reactivos químicos, son procesos destructivos. Como alternativa, la imagen de resonancia magnética (MRI) y los algoritmos de visión por computador han sido propuestos para analizar MRI. Actualmente, hay un creciente interés en el uso de las técnicas fractales en lugar de los algoritmos clásicos de texturas para analizar imágenes. En este estudio, tres algoritmos diferentes (GLCM, CFA y FTA) son comparados, FTA y GLCM lograron correlaciones entre muy buenas y excelentes. Los resultados de este estudio podrían validar el uso de FTA para analizar MRI con el fin de predecir características del lomo.
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Abstract
Energetic ions traveling in solids deposit energy in a variety of ways, being nuclear and electronic stopping the two avenues in which dissipation is usually treated. This separation between electrons and ions relies on the adiabatic approximation in which ions interact via forces derived from the instantaneous electronic ground state. In a more detailed view, in which non-adiabatic effects are explicitly considered, electronic excitations alter the atomic bonding, which translates into changes in the interatomic forces. In this work, we use time dependent density functional theory and forces derived from the equations of Ehrenfest dynamics that depend instantaneously on the time-dependent electronic density. With them we analyze how the inter-ionic forces are affected by electronic excitations in a model of a Ni projectile interacting with a Ni target, a metallic system with strong electronic stopping and shallow core level states. We find that the electronic excitations induce substantial modifications to the inter-ionic forces, which translate into nuclear stopping power well above the adiabatic prediction. In particular, we observe that most of the alteration of the adiabatic potential in early times comes from the ionization of the core levels of the target ions, not readily screened by the valence electrons.
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Affiliation(s)
- M Caro
- Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Falls Church, VA, 22043, USA.
| | - A A Correa
- Quantum Simulations Group, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - E Artacho
- CIC Nanogune and DIPC, Tolosa Hiribidea, 20018, San Sebastián, Spain
- Basque Foundation for Science Ikerbasque, 48013, Bilbao, Spain
- Theory of Condensed Matter, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - A Caro
- Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
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10
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Moir RW, Shaw HF, Caro A, Kaufman L, Latkowski JF, Powers J, Turchi PEA. Molten Salt Fuel Version of Laser Inertial Fusion Fission Energy (LIFE). Fusion Science and Technology 2017. [DOI: 10.13182/fst18-8166] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R. W. Moir
- Lawrence Livermore National Laboratory, Livermore, CA
| | - H. F. Shaw
- Lawrence Livermore National Laboratory, Livermore, CA
| | - A. Caro
- Lawrence Livermore National Laboratory, Livermore, CA
| | - Larry Kaufman
- CALPHAD, Inc, 140 Clark Road, Brookline, MA 02445, larry
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11
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Stoller RE, Tamm A, Béland LK, Samolyuk GD, Stocks GM, Caro A, Slipchenko LV, Osetsky YN, Aabloo A, Klintenberg M, Wang Y. Impact of Short-Range Forces on Defect Production from High-Energy Collisions. J Chem Theory Comput 2016; 12:2871-9. [DOI: 10.1021/acs.jctc.5b01194] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R. E. Stoller
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - A. Tamm
- IMS
Lab, Institute of Technology, University of Tartu, 50411 Tartu, Estonia
- Materials
Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - L. K. Béland
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - G. D. Samolyuk
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - G. M. Stocks
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - A. Caro
- Materials
Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - L. V. Slipchenko
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Yu. N. Osetsky
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - A. Aabloo
- IMS
Lab, Institute of Technology, University of Tartu, 50411 Tartu, Estonia
| | - M. Klintenberg
- Department
of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - Y. Wang
- Pittsburgh
Supercomputer Center, Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213, United States
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12
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Preiksaitiene E, Caro A, Benušienė E, Oltra S, Orellana C, Morkūnienė A, Roselló MP, Kasnauskiene J, Monfort S, Kučinskas V, Mayo S, Martinez F. A novel missense mutation in the NSDHL gene identified in a Lithuanian family by targeted next-generation sequencing causes CK syndrome. Am J Med Genet A 2015; 167:1342-8. [PMID: 25900314 DOI: 10.1002/ajmg.a.36999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 01/15/2015] [Indexed: 12/27/2022]
Abstract
The NSDHL gene encodes 3β-hydroxysteroid dehydrogenase involved in one of the later steps of the cholesterol biosynthetic pathway. Mutations in this gene can cause CHILD syndrome (OMIM 308050) and CK syndrome (OMIM 300831). CHILD syndrome is an X-linked dominant, male lethal disorder caused by mutations in the NSDHL gene that result in the loss of the function of the NSDHL protein. CK syndrome is an allelic X-linked recessive disorder. So far, 13 patients with CK syndrome from two families have been reported on. We present a new five-generation family with affected males manifesting clinical features of CK syndrome. Next generation sequencing was targeted to a custom panel of 542 genes with known or putative implication on intellectual disability. Missense mutation p.Gly152Asp was identified in the NSDHL gene in the DNA sample of the affected male. Mutation carrier status was confirmed for all the obligate carriers in the family. The clinical features of the affected males in the family manifested as weak fetal movements, severe intellectual disability, seizures, spasticity, atrophy of optic discs, microcephaly, plagiocephaly, skeletal abnormalities, and minor facial anomalies, including a high nasal bridge, strabismus, and micrognathia. A highly significant preferential transmission of the mutation was observed in this and previous families segregating CK syndrome. Our report expands the clinical spectrum of this syndrome to include weak fetal movements, spasticity, and plagiocephaly, and transmission ratio distortion. The various findings in these patients increase our understanding of the diversity of the clinical presentation of cholesterol biosynthesis disorders.
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Affiliation(s)
- Egle Preiksaitiene
- Department of Human and Medical Genetics, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Alfonso Caro
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Eglė Benušienė
- Department of Human and Medical Genetics, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Silvestre Oltra
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Carmen Orellana
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Aušra Morkūnienė
- Department of Human and Medical Genetics, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Mónica Pilar Roselló
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Jurate Kasnauskiene
- Department of Human and Medical Genetics, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Sandra Monfort
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Vaidutis Kučinskas
- Department of Human and Medical Genetics, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Sonia Mayo
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Francisco Martinez
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
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Olona C, Caro A, Duque E, Moreno F, Vadillo J, Rueda JC, Vicente V. Comparative study of open abdomen treatment: ABThera™ vs. abdominal dressing™. Hernia 2014; 19:323-8. [DOI: 10.1007/s10029-014-1253-5] [Citation(s) in RCA: 14] [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: 07/30/2013] [Accepted: 04/10/2014] [Indexed: 12/16/2022]
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14
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Caro A, Legarda F, Romero L, Herranz M, Barrera M, Valiño F, Idoeta R, Olondo C. Map on predicted deposition of Cs-137 in Spanish soils from geostatistical analyses. J Environ Radioact 2013; 115:53-59. [PMID: 22868288 DOI: 10.1016/j.jenvrad.2012.06.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 06/12/2012] [Accepted: 06/18/2012] [Indexed: 06/01/2023]
Abstract
The knowledge of the distribution of (137)Cs deposition over Spanish mainland soils along with the geographical, physical and morphological terrain information enable us to know the (137)Cs background content in soil. This could be useful as a tool in a hypothetical situation of an accident involving a radioactive discharge or in soil erosion studies. A Geographic Information System (GIS) would allow the gathering of all the mentioned information. In this work, gamma measurements of (137)Cs on 34 Spanish mainland soils, rainfall data taken from 778 weather stations, soil types and geographical and physical terrain information were input into a GIS. Geostatistical techniques were applied to interpolate values of (137)Cs activity at unsampled places, obtaining prediction maps of (137)Cs deposition. Up to now, geostatistical methods have been used to model spatial continuity of data. Through semivariance and cross-covariance functions the spatial correlation of such data can be studied and described. Ordinary and simple kriging techniques were carried out to map spatial patterns of (137)Cs deposition, and ordinary and simple co-kriging were used to improve the prediction map obtained through a second related variable: namely the rainfall. To choose the best prediction map of (137)Cs deposition, the spatial dependence of the variable, the correlation coefficient and the prediction errors were evaluated using the different models previously mentioned. The best result for (137)Cs deposition map was obtained when applying the co-kriging techniques.
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Affiliation(s)
- A Caro
- CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Avda. Complutense 22, 28040 Madrid, Spain.
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15
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Negreiros FR, Taherkhani F, Parsafar G, Caro A, Fortunelli A. Kinetics of chemical ordering in a Ag-Pt nanoalloy particle via first-principles simulations. J Chem Phys 2012. [DOI: 10.1063/1.4759507] [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] [Indexed: 11/14/2022] Open
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Abstract
AIM The aim of this study was to evaluate the quality of life in patients having surgery for a digestive neoplasm and to monitor how the patient's perception evolves during the first 6 months after surgery. METHOD A prospective study was carried out on the pre and postoperative quality of life of patients undergoing surgery for a digestive system neoplasm between May 2009 and December 2010. Patients were asked to complete the Short Form (36) Health Survey questionnaire (SF-36; spanish version 1.4). RESULTS The study included 80 patients. At 1 month after surgery there was a statistically significant improvement in some domains of the SF-36. At 6 months, a statistically significant improvement was seen in physical functioning, social functioning, mental health and in the two physical and mental domains. We also found statistically significant differences, with women having a worse quality of life. CONCLUSION Comparison of quality of life before and 6 months after surgical intervention showed improvement in both the psychological and the physical elements. This can be attributed to the fact that the patients have had time to recover from the surgery.
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Affiliation(s)
- A Caro
- General Surgery Department, Parc Taulí University Hospital of Sabadell, Sabadell, Spain.
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17
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Bringa EM, Monk JD, Caro A, Misra A, Zepeda-Ruiz L, Duchaineau M, Abraham F, Nastasi M, Picraux ST, Wang YQ, Farkas D. Are nanoporous materials radiation resistant? Nano Lett 2012; 12:3351-3355. [PMID: 21651306 DOI: 10.1021/nl201383u] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The key to perfect radiation endurance is perfect recovery. Since surfaces are perfect sinks for defects, a porous material with a high surface to volume ratio has the potential to be extremely radiation tolerant, provided it is morphologically stable in a radiation environment. Experiments and computer simulations on nanoscale gold foams reported here show the existence of a window in the parameter space where foams are radiation tolerant. We analyze these results in terms of a model for the irradiation response that quantitatively locates such window that appears to be the consequence of the combined effect of two length scales dependent on the irradiation conditions: (i) foams with ligament diameters below a minimum value display ligament melting and breaking, together with compaction increasing with dose (this value is typically ∼5 nm for primary knock on atoms (PKA) of ∼15 keV in Au), while (ii) foams with ligament diameters above a maximum value show bulk behavior, that is, damage accumulation (few hundred nanometers for the PKA's energy and dose rate used in this study). In between these dimensions, (i.e., ∼100 nm in Au), defect migration to the ligament surface happens faster than the time between cascades, ensuring radiation resistance for a given dose-rate. We conclude that foams can be tailored to become radiation tolerant.
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Affiliation(s)
- E M Bringa
- CONICET & Instituto de Ciencias Básicas, Universidad Nacional de Cuyo, 5500 Mendoza, Argentina
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18
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Torres-Rovira L, Astiz S, Caro A, Lopez-Bote C, Ovilo C, Pallares P, Perez-Solana ML, Sanchez-Sanchez R, Gonzalez-Bulnes A. Diet-induced swine model with obesity/leptin resistance for the study of metabolic syndrome and type 2 diabetes. ScientificWorldJournal 2012; 2012:510149. [PMID: 22629144 PMCID: PMC3354447 DOI: 10.1100/2012/510149] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Accepted: 12/22/2011] [Indexed: 12/13/2022] Open
Abstract
The objective of the present study was to determine the suitability of a swine breed with leptin resistance and predisposition to obesity (the Iberian pig) as model for studies on metabolic syndrome and type 2 diabetes. Thus, six Iberian sows had ad libitum access to food enriched with saturated fat (SFAD group; food consumption was estimated to be 4.5 kg/animal/day) whilst four females acted as controls and were fed with 2 kg/animal/day of a commercial maintenance diet. After three months of differential feeding, SFAD animals developed central obesity, dyslipidemia, insulin resistance and impaired glucose tolerance, and elevated blood pressure; the five parameters associated with the metabolic syndrome. Thus, the current study characterizes the Iberian pig as a robust, amenable, and reliable translational model for studies on nutrition-associated diseases.
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Affiliation(s)
- L Torres-Rovira
- Departamento de Reproducción Animal, INIA, 28040 Madrid, Spain
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19
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Legarda F, Romero LM, Herranz M, Barrera M, Idoeta R, Valiño F, Olondo C, Caro A. Inventory and vertical migration of ¹³⁷Cs in Spanish mainland soils. J Environ Radioact 2011; 102:589-597. [PMID: 21507534 DOI: 10.1016/j.jenvrad.2011.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Revised: 01/27/2011] [Accepted: 03/14/2011] [Indexed: 05/30/2023]
Abstract
In this study the total activity of (137)Cs deposited per unit area over the Spanish peninsular territory was analysed using a 150 × 150 km(2) mesh grid, with samples taken from 29 points. The deposited activities ranged between 251 and 6074 Bq/m(2). A linear relationship was obtained between these values and the mean annual rainfall at each sampling point which allowed a map to be drawn, using GIS software, which shows the distribution of total deposited (137)Cs activity across the Spanish mainland. At twelve of these sampling points the vertical migration profile of (137)Cs was obtained. These profiles are separated into two groups with different behaviour, one of which includes clay and loam soils and the other containing sandy soils. For both groups of profiles the parameters of the convective-diffusive model, which describes the vertical migration of (137)Cs in the soil, v (apparent convection velocity) and D (apparent diffusion coefficient) were calculated.
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Affiliation(s)
- F Legarda
- Dept. Nuclear Engineering and Fluid Mechanics, University of Basque Country, Alda Urquijo, s/n, E-48013 Bilbao, Spain
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Abstract
ABSTRACTMolecular dynamics computer simulation of nanocrystalline Ni and Cu with mean grain sizes ranging from 5 to 20 nm show that grain boundaries in nanocrystalline metals have structures similar to most grain boundaries found in conventional polycrystalline materials. Moreover, the excess enthalpy density in grain boundaries and triple junctions appears to be independent of grain in both, computer generated and experimental measured samples. Simulations of deformation under constant uniaxial stress demonstrate a change in deformation mechanism as function of grain size: at the smallest grain sizes all deformation is accommodated in the grain boundaries, at higher grain sizes, intragrain deformation is observed
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21
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Gómez Moreno S, Lage Gallé E, Caro A, Jiménez Díaz J, Sánchez González A, Martínez Martínez A. Adiponectin and graft vascular disease after cardiac transplantation. Transplant Proc 2010; 42:3189-90. [PMID: 20970646 DOI: 10.1016/j.transproceed.2010.05.137] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Graft vascular disease (GVD) is a form of accelerated atherosclerosis that involves the transplanted heart, affecting more than 40% of patients after follow-up of 5 years. According to some authors, adiponectin concentration is a prognostic factor for progression of coronary atherosclerosis. Following this line of research, the objective of the present study was to analyze the relationship between adiponectin concentration and development of GVD in 52 cardiac transplant recipients. Patients were divided into 2 groups according to findings at intravascular ultrasound: group 1 with 21 patients without GVD, and group 2 with 31 patients with GVD. Patients with GVD were further divided into 2 additional groups according to results of coronary angiography: group 3 with 35 patients without GVD, and group 4 with 17 patients with any degree of GVD. No significant differences (P=.50) were observed insofar as adiponectin concentration between groups 1 and 2, and groups 3 and 4. Significant differences in adiponectin concentration were observed when the sex of the patient was considered (P=.002), with higher concentrations detected in women. Serious cardiac events were more common in patients with GVD (P=.001). Mean time between transplantation and diagnosis of GVD was 67 months in group 1, 107 months in group 2, 71 months in group 3, and 101 months in group 4. Significant differences were observed between groups 1 and 2 (P=.030).
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Affiliation(s)
- S Gómez Moreno
- Department of Cardiology, University Hospital Virgen del Rocío, Seville, Spain.
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22
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Caro A, Cacciotto A, Fenu P, Piga A. Polyphenols, colour and antioxidant activity changes in four Italian red wines during storage. Acta Alimentaria 2010. [DOI: 10.1556/aalim.39.2010.2.11] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Caro A, Ynaraja E, Montoya JA. Effects of Short-term Treatment with Pimobendan in Dogs with Myxomatous Valve Disease. Journal of Applied Animal Research 2009. [DOI: 10.1080/09712119.2009.9706999] [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] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Bellon P, Averback RS, Odunuga S, Li Y, Krasnochtchekov P, Caro A. Crossover from superdiffusive to diffusive mixing in plastically deformed solids. Phys Rev Lett 2007; 99:110602. [PMID: 17930424 DOI: 10.1103/physrevlett.99.110602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2007] [Revised: 06/12/2007] [Indexed: 05/25/2023]
Abstract
We derive expressions for the effective diffusion coefficient of Richardson's pairs in plastically strained solids as a function of the pair separation distance R. We predict that a crossover from superdiffusive to diffusive mixing takes place when R becomes comparable to the coherence length of the shearing events underlying the plastic deformation. Molecular dynamics simulations on nanocrystalline and amorphous systems support this analysis, which thus provides new insight on deformation mechanisms in these systems. Superdiffusive mixing is experimentally observable by monitoring the rate of dissolution of precipitates as a function of their initial size.
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Affiliation(s)
- P Bellon
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Illinois 61801, USA
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Caro A, Rodríguez PG, Antequera T, Palacios R. Feasible Application of Shape-Based Classification. Pattern Recognition and Image Analysis 2007. [DOI: 10.1007/978-3-540-72849-8_74] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wang YM, Bringa EM, Victoria M, Caro A, McNaney JM, Smith R, Remington BA. Deformation of nanocrystalline materials at ultrahigh strain rates – microstructure perspective in nanocrystalline nickel. ACTA ACUST UNITED AC 2006. [DOI: 10.1051/jp4:2006134140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Caro A, Crowson DA, Caro M. Classical many-body potential for concentrated alloys and the inversion of order in iron-chromium alloys. Phys Rev Lett 2005; 95:075702. [PMID: 16196797 DOI: 10.1103/physrevlett.95.075702] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2005] [Indexed: 05/04/2023]
Abstract
Atomistic simulations of alloys at the empirical level face the challenge of correctly modeling basic thermodynamic properties. In this Letter we propose a methodology to generalize many-body classic potentials to incorporate complex formation energy curves. Application to Fe-Cr allows us to correctly predict the order vs segregation tendency in this alloy, as observed experimentally and calculated with ab initio techniques, providing in this way a potential suitable for radiation damage studies.
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Affiliation(s)
- A Caro
- Chemistry and Materials Science Directorate, Lawrence Livermore National Laboratory, California 94551, USA.
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29
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Ynaraja E, Caro A, Montoya JA. Effect of Treatment with Enalapril, Frusemide and a Low-sodium Diet on Dogs with Mitral Regurgitation. Journal of Applied Animal Research 2002. [DOI: 10.1080/09712119.2002.9706401] [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: 10/15/2022]
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30
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del Ara RM, González-Polo RA, Caro A, del Amo E, Palomo L, Hernández E, Soler G, Fuentes JM. Diagnostic performance of arginase activity in colorectal cancer. Clin Exp Med 2002; 2:53-7. [PMID: 12049190 DOI: 10.1007/s102380200007] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Arginase activity was measured in serum and biopsy from healthy individuals and colorectal cancer patients. Arginase activity in tumor samples (87 +/- 7.7 U/g tissue) was significantly higher than in controls (40.7 +/- 3.3 U/g tissue). However, serum arginase activity did not show any significant change in both groups. Finally, the micromethod used to quantify arginase activity in this study is superior to other methods because it has increased sensitivity, requires less sample, and is less time-consuming. Arginase differences are significant, according to the t-test (P<0.05)
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Affiliation(s)
- Rangel M del Ara
- Departamento de Bioquímica y Biología Molecular, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
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Hernáinz F, Caro A. Variation of surface tension in aqueous solutions of sodium dodecyl sulfate in the flotation bath. Colloids Surf A Physicochem Eng Asp 2002. [DOI: 10.1016/s0927-7757(01)00575-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
A bronchopneumonic process diagnosed as mycotic in origin is described. The dog fully recovered after 120 days of treatment with ketoconazole. Determination of the serological level of anti-IgG against Aspergillus was very useful in the follow-up, because the clinical improvement of the animal was evident long before the antibody level dropped significantly.
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Affiliation(s)
- M E García
- Departamento Patologia Animal I, Facultad de Veterinaria, Universidad Complutense de Madrid, Spain
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Abstract
Nitric oxide (NO) generation and its effect on mitochondrial enzymes were investigated in soybean embryonic axes at the onset of germination. NO was detected in homogenates from soybean embryonic axes by EPR. Enzymatic sources of NO, such as nitrate reductase activity and nitric oxide synthase, assessed as NADPH-diaphorase activity, were measured in homogenates incubated up to 48 h. Both NO content and the activity of the enzymes showed a similar profile as function of the imbibition time, with maximal levels at 15-24h. Total O2 consumption in enriched-mitochondrial fraction was inhibited by NO in a concentration-dependent manner. O2 consumption dependent on cytochrome oxidase activity was more sensitive than alternative oxidase pathway to NO exposure. Half maximal effects of NO at 0.3 and 3.6 microM were measured for cytochrome oxidase and alternative oxidase, respectively. Enriched-mitochondrial fractions from soybean embryonic axes treated with NO (up to 1 microM) showed increased H2O2 production. The data presented suggest that NO could modulate O2 consumption in soybean embryonic axes. This process could affect the pro-oxidant/antioxidant balance and the cellular energy yield in the germinating embryonic axes, and could have a role in soybean germination.
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Affiliation(s)
- A Caro
- Physical Chemistry-PRALIB, School of Pharmacy and Biochemistry, University of Buenos Aires, Argentina
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Abstract
The effects of starvation and salinity on the physiology of Salmonella typhimurium were investigated in a microcosm study. The physiological changes were monitored by using fluorochromes dyes such as DAPI (4',6-diamidino-2-phenylindole) for evaluation of the genomic content, CTC (5-cyano-2,3-ditolyl tetrazolium chloride) for respiratory activity and syto 9 and propidium iodide for cytoplasmic membrane damages. The metabolic activity of the cellular population was assessed with the method of Kogure (direct viable count), to enumerate the substrate-responsive cells. These different staining procedures were objectively analysed by an image analysis system. This paper describes the progressive alteration of Salmonella typhimurium physiology under salinity and starvation conditions.
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Affiliation(s)
- A Caro
- Laboratoire Hydrobiologie Marine et Continentale, UMR CNRS-Université Montpellier II No. 5556, Université de Montpellier II, F-34095, Montpellier, France
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Abstract
Maintenance of pathogenicity of viable but nonculturable Salmonella typhimurium cells experimentally stressed with UV-C and seawater, was investigated relative to the viability level of the cellular population. Pathogenicity, tested in a mouse model, was lost concomitantly with culturability, whereas cell viability remained undamaged, as determined by respiratory activity and cytoplasmic membrane and genomic integrities.
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Affiliation(s)
- A Caro
- Laboratoire Hydrobiologie, UMR CNRS-Université Montpellier II No. 5556, Université Montpellier II, F-34095 Montpellier cedex 5, France.
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Van Swygenhoven H, Spaczér M, Caro A. Characterisation of the microstructure of nanophase Ni: A molecular dynamics simulation study. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0965-9773(99)00203-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Van Swygenhoven H, Spaczér M, Farkas D, Caro A. The role of grain size and the presence of low and high angle grain boundaries in the deformation mechanism of nanophase Ni: A molecular dynamics computer simulation. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0965-9773(99)00127-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [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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Van Swygenhoven H, Spaczér M, Caro A. Role of low and high angle grain boundaries in the deformation mechanism of nanophase Ni: A molecular dynamics simulation study. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0965-9773(98)00118-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Both total iron content and the in vitro rate of iron reduction were higher in roots grown in the presence of exogenously added iron (up to 500 microM) than in roots grown in absence of supplemented iron. In vivo generation of reactive O2 species by intact roots was assessed employing 2',7'-dichlorofluorescein diacetate oxidation to a fluorescent product. Roots developed in the presence of 500 microM Fe-EDTA, showed significantly increased fluorescence (64%), as compared to roots developed in absence of added iron, suggesting that iron supplementation led to oxidative stress in vivo. At the subcellular level, iron content and Fe-EDTA reduction rate were significantly increased in microsomes isolated from roots developed in the presence of exogenously added iron, as compared to microsomes from roots grown in the absence of iron. Microsomes from Fe supplemented plants exhibited a 51% increase in 2',7'-dichlorofluorescein diacetate oxidation rate, a 55% increase in superoxide anion generation, and a four-fold increase in hydroxyl radical production as compared to controls. Iron supplementation did not affect the activity of antioxidant enzymes or the content of total thiols, however alpha-tocopherol content was significantly decreased in the homogenates and the microsomes isolated from roots supplemented with iron, as compared with values in roots developed in absence of iron. These data suggest that in vivo iron supplementation increased oxygen radical generation.
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Affiliation(s)
- A Caro
- Physical Chemistry, School of Pharmacy and Biochemistry, University of Buenos Aires, Argentina
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Spaczér M, Caro A, Victoria M. Evidence of amorphization in molecular-dynamics simulations on irradiated intermetallic NiAl. Phys Rev B Condens Matter 1995; 52:7171-7178. [PMID: 9979659 DOI: 10.1103/physrevb.52.7171] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Spaczér M, Caro A, Victoria M. Computer simulations of disordering kinetics in irradiated intermetallic compounds. Phys Rev B Condens Matter 1994; 50:13204-13213. [PMID: 9975511 DOI: 10.1103/physrevb.50.13204] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Caro A, Drabold DA, Sankey OF. Properties of the Al-Si solid solution: Dynamical properties of the silicon substitutional and the aluminum vacancy. Phys Rev B Condens Matter 1994; 49:6647-6654. [PMID: 10009384 DOI: 10.1103/physrevb.49.6647] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Simontacchi M, Caro A, Fraga CG, Puntarulo S. Oxidative Stress Affects [alpha]- Tocopherol Content in Soybean Embryonic Axes upon Imbibition and following Germination. Plant Physiol 1993; 103:949-953. [PMID: 12231992 PMCID: PMC159068 DOI: 10.1104/pp.103.3.949] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The content of [alpha]-tocopherol ([alpha]T) in isolated soybean (Glycine max, var Hood) embryonic axes was measured upon germination. Dry, high-vigor axes contained 1.2 [plus or minus] 0.1, nmol/axis and after an increase during the initial 6 h of imbibition, there was a decline to 1.0 [plus or minus] 0.1 nmol/axis at 24 h of incubation. Incubation in the presence of the redox-cycling agent paraquat (4 mM) for 24 h increased the [alpha]T content to 1.9 [plus or minus] 0.2 nmol/axis. When the incubation medium was supplemented with 500 [mu]M Fe-EDTA over 24 h, the content of [alpha]T increased to 1.8 [plus or minus] 0.1 nmol/axis. Isolated axes from soybean seeds stored for 56 months contained 6.5 [plus or minus] 0.3 nmol of [alpha]T/axis after 24 h of imbibition as compared to 1.0 [plus or minus] 0.1 nmol of [alpha]T/axis in axes from soybean seeds stored for 8 months. In all of these experimental situations, oxidant production as assessed in vivo by a fluorometric assay was increased by 4 mM paraquat (8-fold), 500 [mu]M iron (2-fold), and 56 months of storage (4-fold) after 24 h of imbibition. The data presented here suggest that the cellular content of [alpha]T is physiologically adjusted as a response to conditions of oxidative stress.
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Affiliation(s)
- M. Simontacchi
- Physical Chemistry Division-Institute of Biochemistry and Biophysics, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
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Caro A, Spaczer M. Kinetics of radiation-induced disordering of A3B intermetallic compounds: A molecular-dynamics-simulation study. Phys Rev B Condens Matter 1993; 47:11483-11486. [PMID: 10005289 DOI: 10.1103/physrevb.47.11483] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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