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Acosta-Motos JR, Diaz-Vivancos P, Álvarez S, Fernández-García N, Sanchez-Blanco MJ, Hernández JA. Physiological and biochemical mechanisms of the ornamental Eugenia myrtifolia L. plants for coping with NaCl stress and recovery. PLANTA 2015; 242:829-46. [PMID: 25976265 DOI: 10.1007/s00425-015-2315-3] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 04/30/2015] [Indexed: 05/07/2023]
Abstract
We studied the response of Eugenia myrtifolia L. plants, an ornamental shrub native to tropical and subtropical areas, to salt stress in order to facilitate the use of these plants in Mediterranean areas for landscaping. E. myrtifolia plants implement a series of adaptations to acclimate to salinity, including morphological, physiological and biochemical changes. Furthermore, the post-recovery period seems to be detected by Eugenia plants as a new stress situation. Different physiological and biochemical changes in Eugenia myrtifolia L. plants after being subjected to NaCl stress for up to 30 days (Phase I) and after recovery from salinity (Phase II) were studied. Eugenia plants proved to be tolerant to NaCl concentrations between 44 and 88 mM, displaying a series of adaptative mechanisms to cope with salt-stress, including the accumulation of toxic ions in roots. Plants increased their root/shoot ratio and decreased their leaf area, leaf water potential and stomatal conductance in order to limit water loss. In addition, they displayed different strategies to protect the photosynthetic machinery, including the limited accumulation of toxic ions in leaves, increase in chlorophyll content, changes in chlorophyll fluorescence parameters, leaf anatomy and antioxidant defence mechanisms. Anatomical modifications in leaves, including an increase in palisade parenchyma and intercellular spaces and decrease in spongy parenchyma, served to facilitate CO2 diffusion in a situation of reduced stomatal aperture. Salinity produced oxidative stress in Eugenia plants as evidenced by oxidative stress parameters values and a reduction in APX and ASC levels. Nevertheless, SOD and GSH contents increased. The post-recovery period is detected as a new stress situation, as observed through effects on plant growth and alterations in chlorophyll fluorescence and oxidative stress parameters.
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Álvarez S, Sánchez-Blanco MJ. Comparison of individual and combined effects of salinity and deficit irrigation on physiological, nutritional and ornamental aspects of tolerance in Callistemon laevis plants. JOURNAL OF PLANT PHYSIOLOGY 2015; 185:65-74. [PMID: 26277754 DOI: 10.1016/j.jplph.2015.07.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 06/05/2015] [Accepted: 07/14/2015] [Indexed: 06/04/2023]
Abstract
The effect of water deficit, salinity and both applied simultaneously on several physiological and morphological parameters in the ornamental plant Callistemon laevis was studied to identify the tolerance mechanisms developed by this species to these sources of stress and to evaluate their adaptability to such conditions. C. laevis plants were grown in pots outdoors and subjected to four irrigation treatments lasting ten months: control (0.8 dS m(-1), 100% water holding capacity), water deficit (0.8 dS m(-1), 50% of the amount of water supplied in control), saline (4.0 dS m(-1), same amount of water supplied as control) and saline water deficit (4.0 dS m(-1), 50% of the water supplied in the control). Water and saline stress, when applied individually, led to a reduction of 12% and 39% of total biomass, respectively, while overall plant quality (leaf color and flowering) was unaffected. However, saline water deficit affected leaf color and flowering and induced an excessive decrease of growth (68%) due to leaf tissue dehydration and a high leaf Cl and Na concentration. Biomass partitioning depended not only on the amount of water applied, but also on the electrical conductivity of the water. Water stress induced active osmotic adjustment and decreased leaf tissue elasticity. Although both Na and Cl concentrations in the plant tissues increased with salinity, Cl entry through the roots was more restricted. In plants submitted to salinity individually, Na tended to remain in the roots and stems, and little reached the leaves. However, plants simultaneously submitted to water and saline stress were not able to retain this ion in the woody parts. The decrease in stomatal conductance and photosynthesis was more marked in the plants submitted to both stresses, the effect of which decreased photosynthesis, and this together with membrane damage delayed plant recovery. The results show that the combination of deficit irrigation and salinity in C. laevis is not recommended since it magnifies the adverse effects of either when applied individually.
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Béjar J, Álvarez S, García D, Gómez I, Oliva L, Tejeda A, Vázquez-Salceda J. Discovery of spatio-temporal patterns from location-based social networks. J EXP THEOR ARTIF IN 2015. [DOI: 10.1080/0952813x.2015.1024492] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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54
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Álvarez S. El Moltó Tarragoní, una raza antigua extinguida. ARCHIVOS DE ZOOTECNIA 2015. [DOI: 10.21071/az.v64i247.503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Se describe una raza ovina antigua de la zona central de Cataluña, el Moltó Tarragoní (carnero tarraconense). Se detallan sus posibles relaciones con otras razas ovinas próximas y se analizan las causas que contribuyeron a su temprana desaparición. Tarragona Ram, an ancient extinct breed
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55
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Sanz E, Hevia V, Arias F, Fabuel JJ, Álvarez S, Rodríguez-Patrón R, Gómez V, Díez-Nicolás V, González-Gordaliza C, Burgos FJ. Contrast-enhanced ultrasound (CEUS): an excellent tool in the follow-up of small renal masses treated with cryoablation. Curr Urol Rep 2015; 16:469. [PMID: 25404183 DOI: 10.1007/s11934-014-0469-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Strict imaging follow-up is mandatory after cryoablation of small renal masses (SRMs). Although it uses ionizing radiation and nephrotoxic iodinated contrast, computed tomography (CT) is still the gold standard test. Contrast-enhanced ultrasound (CEUS) is a novel technique that informs in real time about renal perfusion avoiding radiation and nephrotoxicity. The objective of this study is to compare outcomes between CEUS and CT in the follow-up of SRMs treated with cryoablation, as well as to assess degree of agreement between them. This is a prospective observational study (May 2012 to December 2013) comparing CEUS and CT in 16 patients with SRMs cryoablated. The on-going protocol of the study includes a CT and CEUS 3 months after treatment and then every 6 months during 5 years. Local relapse was defined as the presence of contrast enhancement in the mass. All the CEUS were performed by a single experienced observer (E.S.). Degree of agreement was measured with kappa index. CEUS detected contrast enhancement in three patients (3/16, 18.8%) and CT in two patients (2/16, 12.5%). Degree of agreement between CEUS and CT, according to Landis-Koch classification, was 0.76 (CI 0.33-1.19; p = 0.0165), which is excellent and higher than expected by random. Sensitivity of the test is 93.75% (15/16). Median time of follow-up after cryoablation is 22 months (15.5-36.5). CEUS has an excellent agreement with CT and a high sensitivity in the follow-up of SRMs treated with cryosurgery, demonstrating its usefulness. Due to these encouraging results, it could become a reference test in the near future for monitoring SRMs after ablative treatment.
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Acosta-Motos JR, Diaz-Vivancos P, Álvarez S, Fernández-García N, Sánchez-Blanco MJ, Hernández JA. NaCl-induced physiological and biochemical adaptative mechanisms in the ornamental Myrtus communis L. plants. JOURNAL OF PLANT PHYSIOLOGY 2015; 183:41-51. [PMID: 26074356 DOI: 10.1016/j.jplph.2015.05.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 05/04/2015] [Accepted: 05/04/2015] [Indexed: 05/07/2023]
Abstract
Physiological and biochemical changes in Myrtus communis L. plants after being subjected to different solutions of NaCl (44, and 88 mM) for up to 30 days (Phase I) and after recovery from the salinity period (Phase II) were studied. Myrtle plants showed salinity tolerance by displaying a series of adaptative mechanisms to cope with salt-stress, including controlled ion homeostasis, the increase in root/shoot ratio, the reduction of water potentials and stomatal conductance to limit water loss. In addition, they displayed different strategies to protect the photosynthetic machinery, including limiting toxic ion accumulation in leaves, increase in chlorophyll content, and changes in chlorophyll fluorescence parameters, leaf anatomy and increases in catalase activity. Anatomical modifications in leaves, including a decrease in spongy parenchyma and increased intercellular spaces, allow CO2 diffusion in a situation of reduced stomatal aperture. In spite of all these changes, salinity produced oxidative stress in myrtle plants as monitored by increases in oxidative stress parameter values. The post-recovery period is perceived as a new stress situation, as observed through effects on plant growth and alterations in non-photochemical quenching parameters and lipid peroxidation values.
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Adema V, Larráyoz MJ, Calasanz MJ, Palomo L, Patiño-García A, Agirre X, Hernández-Rivas JM, Lumbreras E, Buño I, Martinez-Laperche C, Mallo M, García O, Álvarez S, Blazquez B, Cervera J, Luño E, Valiente A, Vallespí MT, Arenillas L, Collado R, Pérez-Oteyza J, Solé F. Correlation of myelodysplastic syndromes with i(17)(q10) and TP53 and SETBP1 mutations. Br J Haematol 2015; 171:137-41. [PMID: 25716545 DOI: 10.1111/bjh.13355] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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58
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Álvarez S, Méndez P, Martínez-Fernández A. Fermentative and nutritive quality of banana by-product silage for goats. JOURNAL OF APPLIED ANIMAL RESEARCH 2014. [DOI: 10.1080/09712119.2014.978782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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59
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Fresno M, Álvarez S, Díaz E, Virto M, de Renobales M. Short communication: Sensory profile of raw goat milk cheeses made with artisan kid rennet pastes from commercial-weight animals: alternative to farmhouse goat cheeses. J Dairy Sci 2014; 97:6111-5. [PMID: 25064646 DOI: 10.3168/jds.2014-8238] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 06/14/2014] [Indexed: 11/19/2022]
Abstract
The loss of traditional kid rennet pastes in the Canary Islands (Spain), as in many other regions, is most likely due to the custom of using abomasa from very young animals killed below desirable commercial weight. In addition, the reasonable price of commercial rennets (CR) has resulted in the loss of typical sensory characteristics for most farmhouse raw goat milk cheeses, placing them at a disadvantage when local and international markets are full of different cheeses, often with aggressive marketing strategies. This paper analyzes the sensory characteristics of raw goat milk cheeses made with rennet pastes prepared from commercial kid abomasa in 2 ways: dried while full of ingested milk [full, commercial, artisan kid rennet (FCKR)], or dried after being emptied of ingested milk and refilled with raw goat milk [empty, commercial, artisan kid rennet (ECKR)]. This latter practice allows the use of empty abomasa, or abomasa with grass, soil, and so on. Sensory profiles of cheeses made with FCKR and ECKR rennets were compared with those made with CR by an expert panel (n=7). The FCKR and ECKR cheeses had similar sensory profiles. Although scores for FCKR cheeses were somewhat higher than for ECKR cheeses, they were in the range found for traditional cheeses made with rennet prepared with abomasa from very young animals. The sensory profile of CR cheeses was very different. Almost 90% of consumer panelists (n=90) preferred cheeses made with the experimental rennet pastes. These results demonstrate the possibility to prepare artisan rennet pastes from commercial-weight kids in an easy way for farmhouse cheese makers using local resources that would otherwise be destroyed in abattoirs.
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Álvarez S, Sánchez-Blanco MJ. Long-term effect of salinity on plant quality, water relations, photosynthetic parameters and ion distribution in Callistemon citrinus. PLANT BIOLOGY (STUTTGART, GERMANY) 2014; 16:757-64. [PMID: 24118672 DOI: 10.1111/plb.12106] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 08/13/2013] [Indexed: 05/25/2023]
Abstract
The effect of saline stress on physiological and morphological parameters in Callistemon citrinus plants was studied to evaluate their adaptability to irrigation with saline water. C. citrinus plants, grown under greenhouse conditions, were subjected to two irrigation treatments lasting 56 weeks: control (0.8 dS·m(-1)) and saline (4 dS·m(-1)). The use of saline water in C. citrinus plants decreased aerial growth, increased the root/shoot ratio and improved the root system (increased root diameter and root density), but flowering and leaf colour were not affected. Salinity caused a decrease in stomatal conductance and evapotranspiration, which may prevent toxic levels being reached in the shoot. Net photosynthesis was reduced in plants subjected to salinity, although this response was evident much later than the decrease in stomatal conductance. Stem water potential was a good indicator of salt stress in C. citrinus. The relative salt tolerance of Callistemon was related to storage of higher levels of Na+ and Cl- in the roots compared with the leaves, especially in the case of Na+, which could have helped to maintain the quality of plants. The results show that saline water (around 4 dS·m(-1)) could be used for growing C. citrinus commercially. However, the cumulative effect of irrigating with saline water for 11 months was a decrease in photosynthesis and intrinsic water use efficiency, meaning that the interaction of the salinity level and the time of exposure to the salt stress should be considered important in this species.
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61
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Álvarez S, Ruiz A, Suárez J, Romero S, Simal P, Fernández-Liria A, Lahera G. EPA-1071 – Emotion recognition deficit in patients with single right hemisphere damage. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)78352-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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62
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Menezes J, Salgado RN, Acquadro F, Gómez-López G, Carralero MC, Barroso A, Mercadillo F, Espinosa-Hevia L, Talavera-Casañas JG, Pisano DG, Álvarez S, Cigudosa JC. ASXL1, TP53 and IKZF3 mutations are present in the chronic phase and blast crisis of chronic myeloid leukemia. Blood Cancer J 2013; 3:e157. [PMID: 24212482 PMCID: PMC3880437 DOI: 10.1038/bcj.2013.54] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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63
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Pérez C, Pascual M, Martín-Subero JI, Bellosillo B, Segura V, Delabesse E, Álvarez S, Larrayoz MJ, Rifón J, Cigudosa JC, Besses C, Calasanz MJ, Cross NCP, Prósper F, Agirre X. Aberrant DNA methylation profile of chronic and transformed classic Philadelphia-negative myeloproliferative neoplasms. Haematologica 2013; 98:1414-20. [PMID: 23716560 DOI: 10.3324/haematol.2013.084160] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Most DNA methylation studies in classic Philadelphia-negative myeloproliferative neoplasms have been performed on a gene-by-gene basis. Therefore, a more comprehensive methylation profiling is needed to study the implications of this epigenetic marker in myeloproliferative neoplasms. Here, we have analyzed 71 chronic (24 polycythemia vera, 23 essential thrombocythemia and 24 primary myelofibrosis) and 13 transformed myeloproliferative neoplasms using genome-wide DNA methylation arrays. The three types of chronic Philadelphia-negative myeloproliferative neoplasms showed a similar aberrant DNA methylation pattern when compared to control samples. Differentially methylated regions were enriched in a gene network centered on the NF-κB pathway, indicating that they may be involved in the pathogenesis of these diseases. In the case of transformed myeloproliferative neoplasms, we detected an increased number of differentially methylated regions with respect to chronic myeloproliferative neoplasms. Interestingly, these genes were enriched in a list of differentially methylated regions in primary acute myeloid leukemia and in a gene network centered around the IFN pathway. Our results suggest that alterations in the DNA methylation landscape play an important role in the pathogenesis and leukemic transformation of myeloproliferative neoplasms. The therapeutic modulation of epigenetically-deregulated pathways may allow us to design targeted therapies for these patients.
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Costa D, Muñoz C, Carrió A, Nomdedeu M, Calvo X, Solé F, Luño E, Cervera J, Vallespí T, Berneaga D, Gómez C, Arias A, Such E, Sanz G, Grau J, Insunza A, Calasanz MJ, Ardañaz MT, Hernández JM, Azaceta G, Álvarez S, Sánchez J, Martín ML, Bargay J, Gómez V, Cervero CJ, Allegue MJ, Collado R, Campo E, Nomdedeu B. Reciprocal translocations in myelodysplastic syndromes and chronic myelomonocytic leukemias: Review of 5,654 patients with an evaluable karyotype. Genes Chromosomes Cancer 2013; 52:753-63. [DOI: 10.1002/gcc.22071] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 04/11/2013] [Indexed: 12/18/2022] Open
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65
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Cigudosa J, Ibañez M, Mallo M, Such E, Larrayoz M, Cervera J, Solé F, Calasanz M, Hernández-Rivas J, Álvarez S. P-017 Genetic alterations of the epigenetic pathways on MDS patients with a 5q deletion drive specific methylation signatures. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70066-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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66
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Mallo M, del Rey M, Ibáñez M, Calasanz MJ, Arenillas L, Larráyoz MJ, Pedro C, Jerez A, Maciejewski J, Costa D, Nomdedeu M, Diez-Campelo M, Lumbreras E, González-Martínez T, Marugán I, Such E, Cervera J, Cigudosa JC, Álvarez S, Florensa L, Hernández JM, Solé F. Response to lenalidomide in myelodysplastic syndromes with del(5q): influence of cytogenetics and mutations. Br J Haematol 2013; 162:74-86. [DOI: 10.1111/bjh.12354] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 03/12/2013] [Indexed: 12/15/2022]
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67
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Leandro-García LJ, Leskelä S, Inglada-Pérez L, Landa I, de Cubas AA, Maliszewska A, Comino-Méndez I, Letón R, Gómez-Graña Á, Torres R, Ramírez JC, Álvarez S, Rivera J, Martínez C, Lozano ML, Cascón A, Robledo M, Rodríguez-Antona C. Hematologic β-tubulin VI isoform exhibits genetic variability that influences paclitaxel toxicity. Cancer Res 2012; 72:4744-52. [PMID: 22805305 DOI: 10.1158/0008-5472.can-11-2861] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cellular microtubules composed of α-β-tubulin heterodimers that are essential for cell shape, division, and intracellular transport are valid targets for anticancer therapy. However, not all the conserved but differentially expressed members of the β-tubulin gene superfamily have been investigated for their role in these settings. In this study, we examined roles for the hematologic isoform β-tubulin VI and functional genetic variants in the gene. β-tubulin VI was highly expressed in blood cells with a substantial interindividual variability (seven-fold variation in mRNA). We characterized DNA missense variations leading to Q43P, T274M, and R307H, and a rare nonsense variant, Y55X. Because variations in the hematologic target of microtubule-binding drugs might alter their myelosuppressive action, we tested their effect in cell lines stably expressing the different β-tubulin VI full-length variants, finding that the T274M change significantly decreased sensitivity to paclitaxel-induced tubulin polymerization. Furthermore, patients treated with paclitaxel and carrying β-tubulin VI T274M exhibited a significantly lower thrombocytopenia than wild-type homozygous patients (P = 0.031). Together, our findings define β-tubulin VI as a hematologic isotype with significant genetic variation in humans that may affect the myelosuppresive action of microtubule-binding drugs. A polymorphism found in a tubulin isoform expressed only in hemapoietic cells may contribute to the patient variation in myelosuppression that occurs after treatment with microtubule-binding drugs.
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Sotelo J, Rodríguez A, Álvarez S, García J. Removal of caffeine and diclofenac on activated carbon in fixed bed column. Chem Eng Res Des 2012. [DOI: 10.1016/j.cherd.2011.10.012] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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69
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Navarro P, López L, González M, Sangrós M, Liévano P, Álvarez S, Abós D. Peritoneal strumosis: An extension study with 99mTc-pertechnetate. Rev Esp Med Nucl Imagen Mol 2012. [DOI: 10.1016/j.remnie.2012.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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70
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Ameling S, Fearghaíl GÓ, Álvarez S, Lacey G. Design of automated training and monitoring system for alcohol-based hand rub surgical hand preparation. BMC Proc 2011. [PMCID: PMC3239444 DOI: 10.1186/1753-6561-5-s6-o32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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71
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Fresno MR, Álvarez S, Rodríguez V, Castro N, Argüello A. Evaluation of the Effect of Rennet Type on the Texture and Colour of Goats Cheese. JOURNAL OF APPLIED ANIMAL RESEARCH 2011. [DOI: 10.1080/09712119.2006.9706609] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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72
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Elvira JJ, Rovira JM, Plana F, Portella MJ, Álvarez S, Ibáñez J. Provenance determination of 18th-century ceramic pastes by X-ray powder diffraction. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311086727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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73
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Álvarez S, Boltansky A, Alfaro J, Sepúlveda L, Ursu M, Innocenti G, Carvajal D, Villamizar G, Hurtado M, Vukusich A. Unresponsiveness to a kidney graft after a fully matched allogenic bone marrow transplantation combined with low-dose tacrolimus therapy: a case report. Transplant Proc 2011; 43:2344-6. [PMID: 21839267 DOI: 10.1016/j.transproceed.2011.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We present the case of a patient with past medical history of acute mieloblastic leukemia treated with a related, fully match alogenic bone marrow transplantation (BMT). He presented after BMT treatment graft versus host disease (GVHD) and thrombotic thrombocytopenic purpura. He also developed end-stage renal disease that required renal replacement therapy. A preemptive kidney transplant was performed. The haematopoiesis were in complete chimera and the patient developed tolerance to the kidney graft, requiring only minimal immunossupression because of his GVHD.
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74
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Menezes J, Acquadro F, Perez-Pons de la Villa C, García-Sánchez F, Álvarez S, Cigudosa JC. FIP1L1/RARA with breakpoint at FIP1L1 intron 13: a variant translocation in acute promyelocytic leukemia. Haematologica 2011; 96:1565-6. [PMID: 21750086 DOI: 10.3324/haematol.2011.047134] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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75
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Patani R, Hollins AJ, Wishart TM, Puddifoot CA, Álvarez S, de Lera AR, Wyllie DJA, Compston DAS, Pedersen RA, Gillingwater TH, Hardingham GE, Allen ND, Chandran S. Retinoid-independent motor neurogenesis from human embryonic stem cells reveals a medial columnar ground state. Nat Commun 2011; 2:214. [PMID: 21364553 PMCID: PMC3072066 DOI: 10.1038/ncomms1216] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Accepted: 01/26/2011] [Indexed: 01/12/2023] Open
Abstract
A major challenge in neurobiology is to understand mechanisms underlying human neuronal diversification. Motor neurons (MNs) represent a diverse collection of neuronal subtypes, displaying differential vulnerability in different human neurodegenerative diseases. The ability to manipulate cell subtype diversification is critical to establish accurate, clinically relevant in vitro disease models. Retinoid signalling contributes to caudal precursor specification and subsequent MN subtype diversification. Here we investigate the necessity for retinoic acid in motor neurogenesis from human embryonic stem cells. We show that activin/nodal signalling inhibition, followed by sonic hedgehog agonist treatment, is sufficient for MN precursor specification, which occurs even in the presence of retinoid pathway antagonists. Importantly, precursors mature into HB9/ChAT-expressing functional MNs. Furthermore, retinoid-independent motor neurogenesis results in a ground state biased to caudal, medial motor columnar identities from which a greater retinoid-dependent diversity of MNs, including those of lateral motor columns, can be selectively derived in vitro.
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