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Ibáñez E, Araiza E, Rodríguez-Iñigo E, Guillén-García P, López-Alcorocho JM. Anatomical repair of distal biceps brachial tendon lesions using double-incision surgical approach. ACTA ACUST UNITED AC 2021. [PMID: 34112451 DOI: 10.1016/j.recote.2021.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND and objective The aim of this work was to evaluate clinical outcomes of patients with biceps brachii tendon rupture who underwent a surgical tendon reconstruction using our own modified double approach technique. PATIENTS The study was performed in 20 patients (21 cases) with biceps brachii tendon rupture. Patients were treated with our own double-approach surgical technique consisting of 2 minimum incisions. After one year follow-up, functional evaluation was assessed using the mayo Elbow Performance Score, muscle strength was estimated with the Medical Research Council questionnaire and pain was evaluated with the Visual Analogic Scale. Range of motion was determined by measuring extension and flexion. RESULTS One year after surgery all patients had returned to sports at the same level they had previously. Visual Analogic Scale was 1.90±0.89 (mean±standard deviation) and median Mayo Elbow Performance Score was 90 (minimum-maximum: 80-100). Of them, 16 patients (76.2%) showed the highest Medical Research Council score, score 5, while 6 cases (26.1%) still scored 4+. Patients had a mean of 136.67° flexion (95% CI: 134.14°-139.19°) and -7.38° extension (95% CI: -10.04° to -4.72°). CONCLUSIONS Double-incision surgical approach for distal biceps brachial tendon rupture anatomical repair is a safe technique, providing results that allow patients muscle recovery and return to sports.
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Affiliation(s)
- E Ibáñez
- Departamento de Traumatología y Cirugía Ortopédica, Clínica CEMTRO, Madrid, Spain
| | - E Araiza
- Departamento de Traumatología y Cirugía Ortopédica, Clínica CEMTRO, Madrid, Spain
| | | | - P Guillén-García
- Departamento de Traumatología y Cirugía Ortopédica, Clínica CEMTRO, Madrid, Spain; Unidad de Investigación, Clínica CEMTRO, Madrid, Spain
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Ruiz-Domínguez M, Fuentes J, Mendiola J, Cerezal-Mezquita P, Morales J, Vílchez C, Ibáñez E. Bioprospecting of cyanobacterium in Chilean coastal desert, Geitlerinema sp. molecular identification and pressurized liquid extraction of bioactive compounds. Food and Bioproducts Processing 2021. [DOI: 10.1016/j.fbp.2021.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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3
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Bressani R, Ibáñez E, Gonzalez JM. Small-Scale Integrated Agricultural Production Family Farm. Food Nutr Bull 2018. [DOI: 10.1177/156482658600800311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- R. Bressani
- Institute of Nutrition of Central America and Panama (INCAP), Guatemala City, Guatemala
| | - E. Ibáñez
- Institute of Nutrition of Central America and Panama (INCAP), Guatemala City, Guatemala
| | - J. M. Gonzalez
- Institute of Nutrition of Central America and Panama (INCAP), Guatemala City, Guatemala
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Espí IM, Soriano J, Barrios L, Ibáñez E, Nogués C. Photochemical internalization to release microparticles entrapped in lysosomes. Photodiagnosis Photodyn Ther 2017. [DOI: 10.1016/j.pdpdt.2017.01.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Soriano J, Mora-Espí I, Alea M, Pérez-Gàrcia L, Barrios L, Ibáñez E, Nogués C. Cell death mechanisms in tumoral and non-tumoral human breast epithelial cell lines triggered by Na-H 2 TCPP or Na-ZnTCPP photodynamic treatments: Apoptosis, necrosis and parthanatos. Photodiagnosis Photodyn Ther 2017. [DOI: 10.1016/j.pdpdt.2017.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Soriano J, Mora-Espí I, Alea-Reyes ME, Pérez-García L, Barrios L, Ibáñez E, Nogués C. Cell Death Mechanisms in Tumoral and Non-Tumoral Human Cell Lines Triggered by Photodynamic Treatments: Apoptosis, Necrosis and Parthanatos. Sci Rep 2017; 7:41340. [PMID: 28112275 PMCID: PMC5256096 DOI: 10.1038/srep41340] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [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: 11/10/2016] [Accepted: 12/16/2016] [Indexed: 12/28/2022] Open
Abstract
Cell death triggered by photodynamic therapy can occur through different mechanisms: apoptosis, necrosis or autophagy. However, recent studies have demonstrated the existence of other mechanisms with characteristics of both necrosis and apoptosis. These new cell death pathways, collectively termed regulated necrosis, include a variety of processes triggered by different stimuli. In this study, we evaluated the cell death mechanism induced by photodynamic treatments with two photosensitizers, meso-tetrakis (4-carboxyphenyl) porphyrin sodium salt (Na-H2TCPP) and its zinc derivative Na-ZnTCPP, in two human breast epithelial cell lines, a non-tumoral (MCF-10A) and a tumoral one (SKBR-3). Viability assays showed that photodynamic treatments with both photosensitizers induced a reduction in cell viability in a concentration-dependent manner and no dark toxicity was observed. The cell death mechanisms triggered were evaluated by several assays and cell line-dependent results were found. Most SKBR-3 cells died by either necrosis or apoptosis. By contrast, in MCF-10A cells, necrotic cells and another cell population with characteristics of both necrosis and apoptosis were predominant. In this latter population, cell death was PARP-dependent and translocation of AIF to the nucleus was observed in some cells. These characteristics are related with parthanatos, being the first evidence of this type of regulated necrosis in the field of photodynamic therapy.
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Affiliation(s)
- J Soriano
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Spain
| | - I Mora-Espí
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Spain
| | - M E Alea-Reyes
- Departament de Farmacologia, toxicologia i Química Terapèutica and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Spain
| | - L Pérez-García
- Departament de Farmacologia, toxicologia i Química Terapèutica and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Spain
| | - L Barrios
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Spain
| | - E Ibáñez
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Spain
| | - C Nogués
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Spain
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Heffernan N, Smyth T, FitzGerald RJ, Vila-Soler A, Mendiola J, Ibáñez E, Brunton N. Comparison of extraction methods for selected carotenoids from macroalgae and the assessment of their seasonal/spatial variation. INNOV FOOD SCI EMERG 2016. [DOI: 10.1016/j.ifset.2016.06.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Castro-Puyana M, Pérez-Sánchez A, Valdés A, Ibrahim OHM, Suarez-Álvarez S, Ferragut JA, Micol V, Cifuentes A, Ibáñez E, García-Cañas V. Pressurized liquid extraction of Neochloris oleoabundans for the recovery of bioactive carotenoids with anti-proliferative activity against human colon cancer cells. Food Res Int 2016; 99:1048-1055. [PMID: 28865616 DOI: 10.1016/j.foodres.2016.05.021] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/23/2016] [Accepted: 05/30/2016] [Indexed: 02/04/2023]
Abstract
In recent years, the green microalgae Neochloris oleoabundans have demonstrated to be an interesting natural source of carotenoids that could be used as potential food additive. In this work, different N. oleoabundans extracts obtained by pressurized liquid extraction (PLE) have been analyzed in depth to evaluate the influence of different culture conditions (effect of nitrogen, light intensity or carbon supplied) not only on the total carotenoid content but also on the carotenoid composition produced by these microalgae. Regardless of the cultivation conditions, lutein and carotenoid monoesters were the most abundant carotenoids representing more than 60% of the total content in all extracts. Afterwards, the effect of the different N. oleoabundans extracts and the dose-effect of the most potent algae extracts (namely, N9, PS and CO2 (-)) on the proliferation of human colon cancer cells lines (HT-29 and SW480) and a cell line established from a primary colon cancer cell culture (HGUE-C-1) were evaluated by an MTT assay whereas a stepwise multiple regression analysis was performed to get additional evidences on the relationship between carotenoid content and the antiproliferative activity. Results revealed that, as a general trend, those extracts with high total carotenoid content showed comparably antiproliferative activity being possible to establish a high correlation between the cell proliferation values and the carotenoid constituents. Monoesters showed the highest contribution to cell proliferation inhibition whereas lutein and violaxanthin showed negative correlation and diesters and zeaxanthin showed a positive significant contribution to cell proliferation.
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Affiliation(s)
- M Castro-Puyana
- Laboratory of Foodomics, Institute of Food Science Research-CIAL (CSIC-UAM), Nicolás Cabrera 9, Campus Cantoblanco, 28049 Madrid, Spain; Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Science and Chemistry, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
| | - A Pérez-Sánchez
- Institute of Molecular and Cellular Biology, Miguel Hernandez University, Avda. Universidad s/n, 03202 Elche, Alicante, Spain
| | - A Valdés
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Science and Chemistry, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
| | - O H M Ibrahim
- Horticulture Department, Fac. Agric, Assiut University, Assiut, Egypt
| | - S Suarez-Álvarez
- Neiker Tecnalia, Biotechnology Department, Arkaute's Agrifood Campus, 01080 Vitoria-Gasteiz, Alava, Spain
| | - J A Ferragut
- Institute of Molecular and Cellular Biology, Miguel Hernandez University, Avda. Universidad s/n, 03202 Elche, Alicante, Spain
| | - V Micol
- Institute of Molecular and Cellular Biology, Miguel Hernandez University, Avda. Universidad s/n, 03202 Elche, Alicante, Spain
| | - A Cifuentes
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Science and Chemistry, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
| | - E Ibáñez
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Science and Chemistry, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain.
| | - V García-Cañas
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Science and Chemistry, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
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Sánchez-Camargo AP, Montero L, Cifuentes A, Herrero M, Ibáñez E. Application of Hansen solubility approach for the subcritical and supercritical selective extraction of phlorotannins from Cystoseira abies-marina. RSC Adv 2016. [DOI: 10.1039/c6ra16862k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new theoretical approach based on Hansen solubility parameters has been employed for the first time to select the best green solvent to extract complex bioactive molecules such as phlorotannins from brown macroalgae Cystoseira abies-marina.
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Affiliation(s)
- A. P. Sánchez-Camargo
- Laboratory of Foodomics
- Bioactivity and Food Analysis Department
- Institute of Food Science Research
- CIAL (UAM-CSIC)
- 28049 Madrid
| | - L. Montero
- Laboratory of Foodomics
- Bioactivity and Food Analysis Department
- Institute of Food Science Research
- CIAL (UAM-CSIC)
- 28049 Madrid
| | - A. Cifuentes
- Laboratory of Foodomics
- Bioactivity and Food Analysis Department
- Institute of Food Science Research
- CIAL (UAM-CSIC)
- 28049 Madrid
| | - M. Herrero
- Laboratory of Foodomics
- Bioactivity and Food Analysis Department
- Institute of Food Science Research
- CIAL (UAM-CSIC)
- 28049 Madrid
| | - E. Ibáñez
- Laboratory of Foodomics
- Bioactivity and Food Analysis Department
- Institute of Food Science Research
- CIAL (UAM-CSIC)
- 28049 Madrid
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Sánchez-Camargo A, Mendiola J, Valdés A, Castro-Puyana M, García-Cañas V, Cifuentes A, Herrero M, Ibáñez E. Supercritical antisolvent fractionation of rosemary extracts obtained by pressurized liquid extraction to enhance their antiproliferative activity. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2015.07.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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11
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Stoedter M, Renko K, Ibáñez E, Plano D, Becker NP, Martitz J, Palop JA, Calvo A, Sanmartín C, Schomburg L. Strong induction of iodothyronine deiodinases by chemotherapeutic selenocompounds. Metallomics 2015; 7:347-54. [PMID: 25579002 DOI: 10.1039/c4mt00273c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The biological activity of thyroid hormones (TH) is regulated by selenoenzymes of the iodothyronine deiodinase (DIO) family catalysing TH activating and inactivating reactions. Besides TH metabolism, several studies indicate an important role of DIO isoenzymes in tumorigenesis and cancer growth. It is therefore of therapeutic importance to identify modulators of DIO expression. We have synthesized and studied a series of selenocompounds containing a methyl- or benzyl-imidoselenocarbamate backbone. One of these novel compounds had chemotherapeutic activities in a murine xenograft tumour model by an unknown mechanism. Therefore, we tested their effects on DIO expression in vitro. In HepG2 hepatocarcinoma cells, DIO1 activity was strongly (up to 10-fold) increased by the methyl- but not by the corresponding benzyl-imidoselenocarbamates. Steady-state mRNA levels remained unaltered under these conditions indicating a post-transcriptional mode of action. The effects were further characterized in HEK293 cells stably expressing DIO1, DIO2 or DIO3. Even within the artificial genetic context of the expression vectors, all three DIO isoenzymes were up-regulated by the methyl- and to a lesser extent by the benzyl-imidoselenocarbamates. Consistent stimulating effects were observed with methyl-N,N'-di(quinolin-3-ylcarbonyl)-imidoselenocarbamate (EI201), a selenocompound known for its anti-tumour activity. DIO inducing effects were unrelated to the intracellular accumulation of selenium, yet the precise mode of action remains elusive. Collectively, our data highlight that these selenocompounds may constitute interesting pharmacological compounds for modifying DIO expression potentially affecting the balance between cell differentiation and proliferation.
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Affiliation(s)
- M Stoedter
- Institut für Experimentelle Endokrinologie, Charité - Universitätsmedizin Berlin, CVK, Südring 10, D-13353 Berlin, Germany.
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Costa AR, Freitas LA, Mendiola J, Ibáñez E. Copaifera langsdorffii supercritical fluid extraction: Chemical and functional characterization by LC/MS and in vitro assays. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2015.02.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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13
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Hynowska A, Blanquer A, Pellicer E, Fornell J, Suriñach S, Baró MD, Gebert A, Calin M, Eckert J, Nogués C, Ibáñez E, Barrios L, Sort J. Nanostructured Ti-Zr-Pd-Si-(Nb) bulk metallic composites: Novel biocompatible materials with superior mechanical strength and elastic recovery. J Biomed Mater Res B Appl Biomater 2014; 103:1569-79. [PMID: 25533018 DOI: 10.1002/jbm.b.33346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 10/27/2014] [Accepted: 12/02/2014] [Indexed: 11/10/2022]
Abstract
The microstructure, mechanical behaviour, and biocompatibility (cell culture, morphology, and cell adhesion) of nanostructured Ti45 Zr15 Pd35- x Si5 Nbx with x = 0, 5 (at. %) alloys, synthesized by arc melting and subsequent Cu mould suction casting, in the form of rods with 3 mm in diameter, are investigated. Both Ti-Zr-Pd-Si-(Nb) materials show a multi-phase (composite-like) microstructure. The main phase is cubic β-Ti phase (Im3m) but hexagonal α-Ti (P63/mmc), cubic TiPd (Pm3m), cubic PdZr (Fm3m), and hexagonal (Ti, Zr)5 Si3 (P63/mmc) phases are also present. Nanoindentation experiments show that the Ti45 Zr15 Pd30 Si5 Nb5 sample exhibits lower Young's modulus than Ti45 Zr15 Pd35 Si5 . Conversely, Ti45 Zr15 Pd35 Si5 is mechanically harder. Actually, both alloys exhibit larger values of hardness when compared with commercial Ti-40Nb, (HTi-Zr-Pd-Si ≈ 14 GPa, HTi-Zr-Pd-Si-Nb ≈ 10 GPa and HTi-40Nb ≈ 2.7 GPa). Concerning the biological behaviour, preliminary results of cell viability performed on several Ti-Zr-Pd-Si-(Nb) discs indicate that the number of live cells is superior to 94% in both cases. The studied Ti-Zr-Pd-Si-(Nb) bulk metallic system is thus interesting for biomedical applications because of the outstanding mechanical properties (relatively low Young's modulus combined with large hardness), together with the excellent biocompatibility.
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Affiliation(s)
- A Hynowska
- Departament de Física, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
| | - A Blanquer
- Departament de Biologia Cellular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
| | - E Pellicer
- Departament de Física, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
| | - J Fornell
- Departament de Física, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
| | - S Suriñach
- Departament de Física, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
| | - M D Baró
- Departament de Física, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
| | - A Gebert
- IFW Dresden, Institute for Complex Materials, P.O. Box 270116, Dresden, D-01171, Germany
| | - M Calin
- IFW Dresden, Institute for Complex Materials, P.O. Box 270116, Dresden, D-01171, Germany
| | - J Eckert
- IFW Dresden, Institute for Complex Materials, P.O. Box 270116, Dresden, D-01171, Germany.,TU Dresden, Institute of Materials Science, Dresden, D-01062, Germany
| | - C Nogués
- Departament de Biologia Cellular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
| | - E Ibáñez
- Departament de Biologia Cellular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
| | - L Barrios
- Departament de Biologia Cellular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
| | - J Sort
- Institució Catalana de Recerca i Estudis Avançats (ICREA) and Departament de Física, Universitat Autònoma de Barcelona, Bellaterra, E-08193, Spain
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Golmakani MT, Mendiola J, Rezaei K, Ibáñez E. Pressurized limonene as an alternative bio-solvent for the extraction of lipids from marine microorganisms. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.05.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Santos J, Herrero M, Mendiola J, Oliva-Teles M, Ibáñez E, Delerue-Matos C, Oliveira M. Assessment of nutritional and metabolic profiles of pea shoots: The new ready-to-eat baby-leaf vegetable. Food Res Int 2014. [DOI: 10.1016/j.foodres.2014.01.062] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Santos J, Oliveira MBPP, Ibáñez E, Herrero M. Phenolic profile evolution of different ready-to-eat baby-leaf vegetables during storage. J Chromatogr A 2014; 1327:118-31. [PMID: 24438834 DOI: 10.1016/j.chroma.2013.12.085] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [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: 11/16/2013] [Revised: 12/19/2013] [Accepted: 12/21/2013] [Indexed: 01/08/2023]
Abstract
Ready-to-eat baby-leaf vegetables market has been growing and offering to consumers convenient, healthy and appealing products, which may contain interesting bioactive compounds. In this work, the composition and the evolution of the phenolic compounds from different baby-leaf vegetables during refrigerated storage was studied. The phenolic compounds were extracted using pressurized liquid extraction (PLE) and the phenolic profile of each sample was analyzed and quantified by using LC-MS and LC-DAD methods, respectively, at the beginning and at the end of a 10-day storage period. The baby-leaf vegetables studied included green lettuce, ruby red lettuce, swiss chard, spinach, pea shoots, watercress, garden cress, mizuna, red mustard, wild rocket and spearmint samples and a total of 203 phenolic compounds were tentatively identified and quantified. The main naturally phenolic compounds identified correspond to glycosylated flavonoids, with exception of green lettuce and spearmint leaves which had a higher content of hydroxycinnamic acids. Quantification of the main compounds showed a 10-fold higher content of total phenolic content of ruby red lettuce (483mgg(-1)) in relation to the other samples, being the lowest values found in the garden cress (12.8mgg(-1)) and wild rocket leaves (8.1mgg(-1)). The total phenolic content only showed a significant change (p<0.05) after storage in the green lettuce (+17.5%), mizuna (+7.8%), red mustard (-23.7%) and spearmint (-13.8%) leaves. Within the different classes of phenolic compounds monitored, the flavonols showed more stable contents than the hydroxycinnamic and hydroxybenzoic acids, although the behavior of each compound varied strongly among samples.
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Affiliation(s)
- J Santos
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - M B P P Oliveira
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - E Ibáñez
- Instituto de Investigación en Ciencias de Alimentación (CIAL-CSIC), Nicolás Cabrera 9, Campus Cantoblanco UAM, 28049 Madrid, Spain.
| | - M Herrero
- Instituto de Investigación en Ciencias de Alimentación (CIAL-CSIC), Nicolás Cabrera 9, Campus Cantoblanco UAM, 28049 Madrid, Spain
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Blanquer A, Pellicer E, Hynowska A, Barrios L, Ibáñez E, Baró MD, Sort J, Nogués C. In vitro biocompatibility assessment of Ti40Cu38Zr10Pd12 bulk metallic glass. J Mater Sci Mater Med 2014; 25:163-172. [PMID: 24022801 DOI: 10.1007/s10856-013-5041-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 08/28/2013] [Indexed: 06/02/2023]
Abstract
The use of biocompatible materials has attained an increasing importance for tissue regeneration and transplantation. The excellent mechanical and corrosion properties of Ti40Cu38Zr10Pd12 bulk metallic glass (BMG) turn it into a potential candidate for its use in orthopaedic implants. Before being considered as a biomaterial, some biological parameters must be taken into account. In this study,mouse preosteoblasts were cultured in the presence or absence of the alloy at different times (24 h, 7 and 21 days) and no differences in cell viability were detected.Moreover, cells were able to adhere to the alloy surface by establishing focal contacts, and displayed a flattened polygonal morphology. After 14 days in culture, differentiation into osteoblasts was observed. Besides, the amount of Cu ions released and their potential toxic effects were analyzed, showing that the amount of Cu released did not increase cell death. Finally, the low levels of inflammatory cytokines secreted by THP-1 differentiated macrophages exposed to the alloy suggest the absence of an immunogenic response to the alloy. In conclusion, in vitro studies indicate that the Ti40Cu38Zr10Pd12 BMG could be considered as a biomaterial to be used in orthopaedic implants.
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Miron TL, Herrero M, Ibáñez E. Enrichment of antioxidant compounds from lemon balm (Melissa officinalis) by pressurized liquid extraction and enzyme-assisted extraction. J Chromatogr A 2013; 1288:1-9. [PMID: 23528869 DOI: 10.1016/j.chroma.2013.02.075] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 02/21/2013] [Accepted: 02/24/2013] [Indexed: 12/17/2022]
Abstract
In this work enzyme-assisted extraction (EAE) and pressurized liquid extraction (PLE) are applied for extraction of natural compounds from lemon balm (Melissa officinalis). Cellulase, endo-β-1,4 xylanase and pectinase were studied in order to degrade cell wall of lemon balm leaves and to release phenolic compounds. On the other hand, in order to compare the performance obtained with EAE, PLE using water and ethanol was employed maintaining 150°C as extraction temperature. The obtained extracts were characterized in terms of antioxidant capacity by using DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging and trolox equivalent antioxidant capacity (TEAC) in vitro assays, whereas the Folin-Ciocalteu procedure was employed to estimate the total phenols content. On the other hand, extracts were chemically characterized by liquid chromatography tandem mass spectrometry (LC-MS/MS). The results showed that EAE enhanced the total phenolic content and the antioxidant capacity compared to a non-enzymatic control. PLE extracts presented higher amount of phenols and antioxidant capacity than enzyme-assisted extracts, reaching the highest values on water extracts (193.18mggallicacid/gextract and EC50=6.81μg/mL). Among the bioactive phenolic compounds identified in lemon balm, rosmarinic acid was the main component, although other important compounds were also identified, such as caffeic acid derivatives (salvianolic acids, lithospermic acid) and rosmarinic acid derivatives (rosmarinic acid hexoside, sagerinic acid, sulfated rosmarinic acid). The present study confirms that EAE and PLE can be considered alternative methods for the extraction of natural compounds with biological activity from natural sources.
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Affiliation(s)
- T L Miron
- Faculty of Food Science and Engineering, Dunărea de Jos University, Domnească 111, 800201 Galaţi, Romania
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Mallol A, Santaló J, Ibáñez E. 27 PSAMMAPLIN A INCREASES DEVELOPMENT AND QUALITY OF MOUSE SOMATIC CELL NUCLEAR TRANSFER EMBRYOS. Reprod Fertil Dev 2013. [DOI: 10.1071/rdv25n1ab27] [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
Among the many biological and technical factors affecting the success rate of mouse somatic cell nuclear transfer (SCNT), faulty reprogramming of the differentiated donor nucleus to a totipotent embryonic state by the recipient oocyte seems key. Accordingly, treatment of SCNT embryos with epigenetic modifiers such as valproic acid (VPA), a histone deacetylase inhibitor (HDACi), enhances cloning efficiency. Psammaplin A (PsA) is a natural and potent DNA methyltransferase inhibitor and HDACi that has never been used in nuclear reprogramming studies. The purpose of our study was to determine the effect of PsA on the development and quality of mouse SCNT embryos, and to compare it to that of VPA. To this aim, mechanically enucleated oocytes from B6CBAF1 female mice were reconstructed with cumulus cell nuclei, activated, and cultured in the presence of the epigenetic modifier. Embryos that reached the blastocyst stage were differentially stained for counting inner cell mass (ICM) and trophectoderm cells. Alternatively, 2-cell embryos were transferred to CD1 recipient females to assess full-term development. In a first set of experiments, embryos were exposed to different concentrations of PsA (5, 10, and 20 µM) or VPA (2 and 4 mM) for 1 to 2 h after reconstruction and 6 h of activation (total 8–9 h). We found that 10 µM PsA and 2 mM VPA significantly increased blastocyst rates (37.3 and 31 v. 23.3% for the control group), although no differences were found in blastocyst quality (10.4–13.6 ICM cells). In a second set of experiments, we studied the effect of treatment duration by incubating the embryos in 10 µM PsA or 2 mM VPA for 8 to 9, 16, or 24 h after reconstruction. With PsA, all treatments showed equivalent blastocyst rates (35.2–43.3%), which were significantly higher than in the control group (20%), but only treatments for 16 and 24 h yielded blastocysts with significantly higher numbers of ICM cells (16.3 and 18.5 v. 10 for the control group). With VPA, treatments for 8 to 9 h and 16 h were equivalent in terms of blastocyst rates (34.0 and 32.5%) and significantly higher than the control group, but only VPA 16 h yielded blastocysts with a significantly higher number of ICM cells (15.6). In a third set of experiments, we studied the full-term development of embryos treated with 10 µM PsA or 2 mM VPA for 16 h and we found that both treatments, but especially the PsA treatment, resulted in higher birth rates than those obtained in the control group, although the differences were not statistically significant (1.79 and 0.86 v. 0.46%). Finally, when the actin polymerization inhibitor latrunculin A was used instead of cytochalasin B in the SCNT protocol during oocyte micromanipulation and activation, we obtained a 3-fold increase in the birth rate of embryos treated with PsA (5.29%). In conclusion, PsA enhances development and quality of mouse SCNT embryos, to a greater extent than VPA, and when combined with the use of latrunculin A instead of cytochalasin B, it results in an 11.5-fold increase in full-term development.
Support from MEC AGL-2011-23784, 2009-SGR-282, and PIF-UAB Fellowships is acknowledged.
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Novo S, Morató R, Penon O, Duran S, Barrios L, Nogués C, Gómez-Martínez R, Pérez-García L, Plaza JA, Ibáñez E, Mogas T. 142 ZONA PELLUCIDA TAGGING WITH BARCODES ALLOWS THE TRACEABILITY OF BOVINE EMBRYOS CULTURED IN GROUP. Reprod Fertil Dev 2013. [DOI: 10.1071/rdv25n1ab142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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
The low number of oocytes collected from unstimulated donors by ovum pick-up means that embryos produced from each female have to be cultured in very small groups. Because embryo quality and development rates are reduced in individual and small group culture, several methods to culture embryos individually but sharing the same medium have been designed. However, these systems prevent embryo movements, interfering with paracrine factors transmission and gradient changes. Here, we present an alternative in vitro culture method to allow the co-culture of embryos from different origins, without movement restriction and preserving their pedigree, by labelling the zygotes with polysilicon barcodes attached to the outer surface of the zona pellucida (ZP). Barcodes (10 × 6 × 1 µm) with 8 rectangular bits of binary codification (256 possible combinations), which can be read under a standard inverted microscope, were fabricated using silicon microtechnologies. To provide the barcodes with a ZP-binding capacity, they were biofunctionalized by self-assembled monolayers with the wheat germ agglutinin (WGA) lectin, which recognizes specific saccharides highly abundant in the ZP of most mammalian species. As a proof of concept, the culture method was tested on bovine zygotes produced from slaughterhouse-derived cow oocytes matured and fertilized in vitro. Using a mouth-controlled pipette, presumptive zygotes were individually rolled over WGA-biofunctionalized barcodes (8 barcodes/embryo) previously placed at the bottom of a drop of manipulation media. Four different barcodes, each one with a different codification, were used to encode 25 embryos (6–7 embryos/barcode codification), which were then cultured together in the same drop of medium. Day 7 (D7) and Day 8 (D8) blastocyst, and barcode retention rates were assessed. In addition, D7 expanded blastocysts were vitrified by the cryotop method and post-warming survival was determined as re-expansion rate at 24 h in culture. Finally, the quality of D8 blastocysts was assessed by differential staining and counting of inner cell mass (ICM) and trophectoderm (TE) cells. In all the experiments, a control group without barcodes was cultured and vitrified-warmed. Data were analyzed by chi-square and Mann–Whitney tests. The presence of barcodes attached to the ZP did not affect in vitro embryo development (D8 blastocysts: 29.7% control n = 309, 36.2% encoded n = 315), post-warming survival (86.4% control n = 66, 80.5% encoded n = 82), or blastocyst quality (IMC/TE: 22.1 ± 1.4/64.5 ± 5.7 control n = 18, 22.2 ± 1.7/64.1 ± 6.1 encoded n = 23). The labelling system was effective until D8 of culture, as all the embryos maintained barcodes attached (4 ± 1.8 barcodes/embryo) and could be identified, even after undergoing vitrification and warming. In conclusion, identification of co-cultured embryos by biofunctionalized barcodes attached to the ZP is feasible and will allow to culture embryos from different donors in the same drop, keeping the benefits of collective culture.
Support was provided by Spanish MEC (TEC2011-29140-C03; RZ2010-00015-0-00; AGL2010-19069), Generalitat Catalunya (2009 SGR 282 and 621), and PIF-UAB Fellowship.
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Ibáñez E, Agliano A, Prior C, Nguewa P, Redrado M, González-Zubeldia I, Plano D, Palop JA, Sanmartín C, Calvo A. The quinoline imidoselenocarbamate EI201 blocks the AKT/mTOR pathway and targets cancer stem cells leading to a strong antitumor activity. Curr Med Chem 2012; 19:3031-43. [PMID: 22455594 DOI: 10.2174/092986712800672076] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 03/03/2012] [Accepted: 03/05/2012] [Indexed: 11/22/2022]
Abstract
Methylimidoselenocarbamates have previously proven to display potent antitumor activities. In the present study we show that these compounds act as multikinase inhibitors. We found that the most effective compound, quinoline imidoselenocarbamate EI201, inhibits the PI3K/AKT/mTOR pathway, which is persistently activated and contributes to malignant progression in various cancers. EI201 blocked the phosphorylation of AKT, mTOR and several of its downstream regulators (p70S6K and 4E-BP1) and ERK1/2 in PC-3, HT-29 and MCF-7 cells in vitro, inducing both autophagy and apoptosis. EI201 also contributes to the loss of maintenance of the selfrenewal and tumorigenic capacity of cancer stem cells (CSCs). 0.1 μmol/L EI201 triggered a reduction in size and number of tumorspheres in PC-3, HT-29 and MCF-7 cells and 4 μmol/L induced the elimination of almost all the tumorspheres in the three studied cell lines. In addition, EI201 suppressed almost 80% prostate tumor growth in vivo (p < 0.01) compared to controls at a relatively low dose (10 mg/kg) in a mouse xenograft model. There was a significant decrease in the subcutaneous primary tumor [18F]-FDG uptake (76.5% reduction, p < 0.05) and in the total tumor burden (76.8% reduction, p < 0.05) after EI201 treatment compared to vehicle control, without causing toxicity in mice. Taken together, our results support further development of EI201 as a novel multi-kinase inhibitor that may be useful against cancers with aberrant upregulation of PI3K/AKT and MAPK signaling pathways.
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Affiliation(s)
- E Ibáñez
- Synthesis Section, Department of Organic and Pharmaceutical Chemistry, University of Navarra, Irunlarrea, 1, E-31008 Pamplona, Spain
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Pellicer E, González S, Blanquer A, Suriñach S, Baró M, Barrios L, Ibáñez E, Nogués C, Sort J. On the biodegradability, mechanical behavior, and cytocompatibility of amorphous Mg72Zn23Ca5and crystalline Mg70Zn23Ca5Pd2alloys as temporary implant materials. J Biomed Mater Res A 2012; 101:502-17. [DOI: 10.1002/jbm.a.34347] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 05/23/2012] [Accepted: 06/18/2012] [Indexed: 11/10/2022]
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Montañés F, Fornari T, Olano A, Ibáñez E. Isolation of prebiotic carbohydrates by supercritical fluid extraction. Scaling-up and economical feasibility. J Chromatogr A 2012; 1250:92-8. [DOI: 10.1016/j.chroma.2012.04.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 04/12/2012] [Accepted: 04/13/2012] [Indexed: 10/28/2022]
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Santos J, Mendiola JA, Oliveira MBPP, Ibáñez E, Herrero M. Sequential determination of fat- and water-soluble vitamins in green leafy vegetables during storage. J Chromatogr A 2012; 1261:179-88. [PMID: 22608116 DOI: 10.1016/j.chroma.2012.04.067] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 04/18/2012] [Accepted: 04/25/2012] [Indexed: 11/18/2022]
Abstract
The simultaneous analysis of fat- and water-soluble vitamins from foods is a difficult task considering the wide range of chemical structures involved. In this work, a new procedure based on a sequential extraction and analysis of both types of vitamins is presented. The procedure couples several simple extraction steps to LC-MS/MS and LC-DAD in order to quantify the free vitamins contents in fresh-cut vegetables before and after a 10-days storage period. The developed method allows the correct quantification of vitamins C, B(1), B(2), B(3), B(5), B(6), B(9), E and provitamin A in ready-to-eat green leafy vegetable products including green lettuce, ruby red lettuce, watercress, swiss chard, lamb's lettuce, spearmint, spinach, wild rocket, pea leaves, mizuna, garden cress and red mustard. Using this optimized methodology, low LOQs were attained for the analyzed vitamins in less than 100 min, including extraction and vitamin analysis using 2 optimized procedures; good repeatability and linearity was achieved for all vitamins studied, while recoveries ranged from 83% to 105%. The most abundant free vitamins found in leafy vegetable products were vitamin C, provitamin A and vitamin E. The richest sample on vitamin C and provitamin A was pea leaves (154 mg/g fresh weight and 14.4 mg/100g fresh weight, respectively), whereas lamb's lettuce was the vegetable with the highest content on vitamin E (3.1 mg/100 g fresh weight). Generally, some losses of vitamins were detected after storage, although the behavior of each vitamin varied strongly among samples.
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Affiliation(s)
- J Santos
- REQUIMTE/Dep. Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
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González S, Pellicer E, Fornell J, Blanquer A, Barrios L, Ibáñez E, Solsona P, Suriñach S, Baró M, Nogués C, Sort J. Improved mechanical performance and delayed corrosion phenomena in biodegradable Mg–Zn–Ca alloys through Pd-alloying. J Mech Behav Biomed Mater 2012; 6:53-62. [DOI: 10.1016/j.jmbbm.2011.09.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 09/23/2011] [Accepted: 09/25/2011] [Indexed: 10/15/2022]
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Miron TL, Plaza M, Bahrim G, Ibáñez E, Herrero M. Chemical composition of bioactive pressurized extracts of Romanian aromatic plants. J Chromatogr A 2010; 1218:4918-27. [PMID: 21163488 DOI: 10.1016/j.chroma.2010.11.055] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 11/18/2010] [Accepted: 11/19/2010] [Indexed: 01/25/2023]
Abstract
In this contribution, pressurized liquid extraction (PLE) has been employed to isolate bioactive compounds from three native Romanian plants, oregano (Origanum vulgare), tarragon (Artemisia dracunculus) and wild thyme (Thymus serpyllum). Different PLE conditions have been tested including extraction with water, ethanol and their mixtures in a wide range of extraction temperatures (50-200°C), and the antioxidant capacity of the extracts was measured using different assays (DPPH radical scavenging, TEAC assay and Folin-Ciocalteau assay to measure total phenols). Moreover, a complete chemical characterization by using LC-MS/MS was carried out to be able to correlate the bioactivity with the particular chemical composition of each extract and plant. The use of PLE with water as a solvent at the highest temperature tested (200°C) always provided the highest extraction yields for the three studied plants, being maximum for oregano (>60%). Besides, oregano's pressurized water extracts at lower temperatures (50°C) presented the highest content on total phenols (184.9 mg gallic acid/g extract) and the best antioxidant activities (EC(50) 6.98 μg/ml). In general, oregano extracts were the most active, followed by wild thyme extracts. The antioxidant capacity measured by DPPH assay was highly correlated with the amount of total phenols. Moreover, the use of a LC-MS/MS method allowed the identification of 30 different phenolic compounds in the different extracts, including phenolic acids, flavones, flavanones and flavonols, which have an important influence on the total antioxidant capacity of the different extracts.
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Affiliation(s)
- T L Miron
- Department of Bioengineering, Faculty of Food Science and Engineering, Dunarea de Jos University, Galati, Romania
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Montañés F, Fornari T, Olano A, Ibáñez E. Supercritical fluid purification of complex carbohydrate mixtures produced by enzimatic transglycosilation and isomerized with complexating reagents. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2010.02.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Herrero M, Plaza M, Cifuentes A, Ibáñez E. Green processes for the extraction of bioactives from Rosemary: Chemical and functional characterization via ultra-performance liquid chromatography-tandem mass spectrometry and in-vitro assays. J Chromatogr A 2009; 1217:2512-20. [PMID: 19945706 DOI: 10.1016/j.chroma.2009.11.032] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2009] [Revised: 11/10/2009] [Accepted: 11/12/2009] [Indexed: 10/20/2022]
Abstract
In this contribution, the performance of three different extraction procedures towards the extraction of antioxidants from rosemary (Rosmarinus officinalis) is presented. Namely, pressurized liquid extraction (PLE), using water and ethanol as solvents, supercritical fluid extraction (SFE), using neat CO(2) and supercritical CO(2) modified with ethanol, as well as a novel extraction process called Water Extraction and Particle formation On-line (WEPO) are directly compared. Different extraction conditions including temperatures, times and pressures have been studied. The produced extracts have been characterized in terms of extraction yield, antioxidant activity (using the DPPH radical scavenging method) and total phenols (using the Folin method). Besides, all the extracts have been chemically characterized using a new quantitative UPLC-MS/MS method. This method allowed the determination of the main antioxidants present in rosemary, including, among others, rosmarinic acid, carnosic acid and carnosol, attaining detection limits as low as 2ng/mL. The results obtained in this study show that PLE using ethanol at high temperatures (200 degrees C) was able to produce extracts with high antioxidant activity (EC(50) 8.8microg/mL) and high yield (ca. 40%) while efficiently extracting antioxidants of diverse polarity, among them, carnosic and rosmarinic acids, regarded as the most important antioxidants present in rosemary. Nevertheless, in this work, the ability of the three studied environmentally friendly extraction techniques to obtain bioactives from natural sources is demonstrated.
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Affiliation(s)
- M Herrero
- Sección Departamental Ciencias de la Alimentación, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
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Costa-Borges N, González S, Santaló J, Ibáñez E. 25 COMPARISON BETWEEN CHEMICALLY ASSISTED, CHEMICALLY INDUCED AND MECHANICAL ENUCLEATION OF MOUSE OOCYTES. Reprod Fertil Dev 2009. [DOI: 10.1071/rdv21n1ab25] [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
Chemically-assisted (AE) and chemically induced (IE) enucleation using demecolcine (DEM) or nocodazole (NOC) have proven to be technically simple procedures to prepare developmentally competent cytoplasts for nuclear transfer (NT) in different species. In this study, we analyzed AE and IE in mouse oocytes in terms of enucleation efficiency, amount of cytoplasmic volume removed and distribution of spindle-associated γ-tubulin after enucleation, and spindle morphology after cytoplast reconstruction by NT. Results were compared to the standard mechanical enucleation (ME) method. Outbred CD-1 and hybrid B6CBAF1 oocytes were collected at 13 to 16 h post-hCG. In AE experiments, oocytes were treated with either 0.4 μg mL–1 DEM or 0.3 μg mL–1 NOC in KSOM for 30 min. Protrusions induced in CD-1 (92.2%, n = 695) and B6CBAF1 (83.3%, n = 370) oocytes were aspirated by piezo-actuated micromanipulation, in H-KSOM with 2.5 μg mL–1 cytochalasin B and 0.05 m sucrose. In IE experiments, oocytes were preactivated with 7% ethanol for 5 min and treated with DEM or NOC in calcium-free KSOM containing 10 mm strontium. At 90 min postactivation (p.a.), completely- and partially-extruded second polar bodies (PBs) were mechanically aspirated. Enucleation efficiencies were higher than 90% both for AE (90.8%, n = 509 CD-1; 90.4%, n = 260 B6CBAF1) and IE methods (90.3%, n = 167 CD-1; 92.9%, n = 197 B6CBAF1), though they were significantly lower than those obtained for ME in nontreated CD-1 (98.4%; n = 126) or B6CBAF1 (100%, n = 498) oocytes. The amount of cytoplasmic volume removed in CD-1 oocytes was smaller in AE than in ME (2.1%, n = 35 and 3.9%, n = 30, respectively). In B6CBAF1 oocytes, used to compare IE (5.4%, n = 60) and ME (4.9%, n = 41), no differences were found. Volumes were calculated using the CellA software on images of cytoplasts and karyoplasts taken after enucleation. Even though both AE and IE methods avoided the removal of the oocyte spindle microtubules, spindle-associated γ-tubulin was eliminated from the cytoplasts generated by all 3 enucleation procedures, as confirmed by immunofluorescence analysis of the cytoplasts and the complementary karyoplasts produced. Finally, spindle morphology was examined in enucleated oocytes reconstructed by NT with a cumulus cell nucleus. Cytoplasts prepared by NOC-AE or NOC-IE displayed morphologically normal bipolar spindles by 2 h post-NT or 18 to 20 h post-activation (hpa), respectively, similar to cytoplasts prepared by ME. However, when DEM was used, microtubule repolymerization was slower and bipolar spindles could not be observed until 4 h post-NT (AE) or 22 to 24 hpa (IE). In conclusion, although enucleation rates are slightly higher for ME, AE and IE protocols allow oocyte enucleation without removal of the meiotic spindle, and a very small cytoplasm volume is eliminated during AE. Treatments with NOC and DEM are reversible, and cytoplasts produced by AE and IE can form morphologically normal spindles after NT, similar to those of cytoplasts produced by ME.
MEC BIO 2006-11792; 2005-SGR00437; Portuguese FCT.
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Rodríguez-Meizoso I, Jaime L, Santoyo S, Cifuentes A, García-Blairsy Reina G, Señoráns FJ, Ibáñez E. Pressurized fluid extraction of bioactive compounds from Phormidium species. J Agric Food Chem 2008; 56:3517-3523. [PMID: 18457400 DOI: 10.1021/jf703719p] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In the search for new functional ingredients with potential use in the food industry, extracts of unknown species of microalgae, such as Phormidium species have been studied. Three solvents of different polarities (i.e., hexane, ethanol, and water) have been used to obtain pressurized liquid extracts with different compositions. Moreover, extractions were performed at four different extraction temperatures (50, 100, 150, and 200 degrees C) with 20 min as extraction time. Antioxidant activity of the extracts has been measured by the TEAC assay. In general, hexane and ethanol extracts showed a higher antioxidant capacity that was mainly attributed to carotenoid compounds, as the TEAC value trend seems to be similar to the carotenoid content of the extracts. On the other hand, the high antioxidant activity of the 200 degrees C water extracts is likely related to the presence of Maillard reaction compounds produced by thermal degradation of the sample. beta-Carotene, lutein, violaxanthin, and neoxanthin were identified in 150 degrees C ethanol extracts. Four different microbial species ( Escherichia coli, Staphylococcus aureus, Candida albicans, and Aspergillus niger) were used to screen the potential antimicrobial activity of the Phormidium sp. extracts. The most sensitive microorganism was the yeast, C. albicans, whereas the fungus, A. niger, was the most resistant. In general, no drastic differences were found for solvents and temperatures tested, showing a very diverse nature of the compounds responsible for the antimicrobial activity of these microalgae. In ethanol extracts, antimicrobial activity could be mainly attributed to the presence of terpenes (i.e., beta-ionone, neophytadiene) and fatty acids (i.e., palmitoleic and linoleic acids) in the samples. Toxicity studies carried out with the extracts evaluated in the present work showed a cellular toxicity lower than those of other cyanobacteria such as Spirulina plantensis.
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Affiliation(s)
- I Rodríguez-Meizoso
- Instituto de Fermentaciones Industriales, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
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Leal M, Sales R, Ibáñez E, Giner J, Leal C. [Evaluation of the effect of a psychoeducational program on the burden in informal caregivers of patients with schizophrenia]. Actas Esp Psiquiatr 2008; 36:63-69. [PMID: 18365786] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
INTRODUCTION Due to the change in the health care model for mental patients focused on the hospital to community care in recent decades, schizophrenic patients live with their families. This study aims to study the burden of family members or caregivers of schizophrenic patients before and after the application of a specific psychoeducational program for caregivers. METHODS A psychoeducational program aimed at three groups was conducted: a) relatives of patients with schizophrenia who received educational program; b) parents or relatives on a previous educational program themselves, and c) control group (not including either parents or patients who received educational programs). The Zarit scale was used to rate burden in the three groups before and after completing the educational program. RESULTS Application of the program was associated to a significant reduction of burden in the groups where it was provided compared with the control group that did not receive the program, independently of the treatment received for the patients. CONCLUSIONS Evidence suggests that these programs should be included in the therapeutical strategies for patients with schizophrenia.
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Affiliation(s)
- Mi Leal
- Universidad de Valencia Hospital Clíco, Valencia.
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Rodríguez-Meizoso I, Marin FR, Herrero M, Señorans FJ, Reglero G, Cifuentes A, Ibáñez E. Subcritical water extraction of nutraceuticals with antioxidant activity from oregano. Chemical and functional characterization. J Pharm Biomed Anal 2006; 41:1560-5. [PMID: 16488570 DOI: 10.1016/j.jpba.2006.01.018] [Citation(s) in RCA: 140] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2005] [Revised: 01/10/2006] [Accepted: 01/10/2006] [Indexed: 12/01/2022]
Abstract
In the present work, oregano leaves (Origanum vulgare L.) are explored as natural source of nutraceuticals with antioxidant activity. To do this, subcritical water extraction (SWE), a new environmentally friendly technique, is employed as extraction procedure and HPLC coupled to DAD is used for the chemical characterization of the extracts. Moreover, the radical scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH) method and the determination of the total phenolic content (measured with the Folin test) are applied to evaluate the antioxidant activity of the extracts. The extraction of antioxidants from oregano leaves by SWE is studied considering different temperatures (25, 50, 100, 150 and 200 degrees C) to investigate the selectivity of the process. The highest antioxidant activity is observed for the extract obtained at the highest temperature, 200 degrees C (EC(50) equal to 10 microg/ml). Moreover, the extraction yield was also the highest (54% dry weight) at these extraction conditions. The total phenolic content showed no differences among the different extracts, concluding that the amount of phenolic compounds extracted was similar but the type and structure of the phenolics was different, providing in this way different antioxidant activity. Some compounds could be tentatively identified, proposing some probable chemical structures for some of them, such as flavanones, dihydroflavonols, favonols and flavones.
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Affiliation(s)
- I Rodríguez-Meizoso
- Departamento de Caracterización de Alimentos, Instituto de Fermentaciones Industriales (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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Moreno J, López-Duque J, Ibáñez E, Díez J, Eizaguirre B, Unamuno M, Rodríguez-Escudero F. Adenosarcoma ovárico con componente heterólogo. Clínica e Investigación en Ginecología y Obstetricia 2005. [DOI: 10.1016/s0210-573x(05)73480-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Russell DF, Ibáñez E, Albertini DF, Overström EW. Activated bovine cytoplasts prepared by demecolcine-induced enucleation support development of nuclear transfer embryos in vitro. Mol Reprod Dev 2005; 72:161-70. [PMID: 16007680 DOI: 10.1002/mrd.20356] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [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: 11/07/2022]
Abstract
Demecolcine-induced enucleation (IE) of mouse oocytes has been shown to improve development to term of cloned mice. In this study, we characterized the kinetics and morphological progression of bovine oocytes subjected to IE, and evaluated their ability to support embryo development to the blastocyst stage after nuclear transfer (NT). In vitro matured bovine oocytes were parthenogenetically activated and subsequently exposed to demecolcine at various times post-activation. Onset and duration of demecolcine treatment significantly altered activation and IE frequencies, which varied from 7.1% to 100% and 33.3% to 91.7%, respectively, at 5 hr post-activation. A significant decrease in IE frequencies was observed at 17 hr post-activation (3.4%-46.1%), possibly due to reincorporation of chromosomes into the oocyte after incomplete second polar body (PB) extrusion. Oocytes were reconstructed by NT before (treatment 1) or after (treatment 2) activation and demecolcine treatment, and cultured in vitro. Cleavage (48.1%-54.2%) and blastocyst rates (15.7%-19%) were equivalent for the two treatments, as well as the total cell number in NT blastocysts. Furthermore, most of the blastocysts were completely diploid (treatment 2) or heteroploid but with a majority of diploid nuclei (treatment 1). Our results demonstrate that the IE method can be successfully used to produce enucleated bovine cytoplasts that are competent to support development to the blastocyst stage after NT. This technically simple approach may provide a more efficient method to enhance the success rate of NT procedures. Further studies are needed to improve the in vitro development efficiency and to expand our understanding of the mechanism(s) involved in demecolcine-induced enucleation.
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Affiliation(s)
- D Fischer Russell
- Department of Biomedical Sciences, School of Veterinary Medicine, Tufts University, North Grafton, MA, USA
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Giner J, Bobes J, Cervera S, Leal C, Baca E, Ibáñez E. [Impact of olanzapine on quality of life of patients with schizophrenia: one-year follow-up with the Seville Quality of Life Questionnaire]. Actas Esp Psiquiatr 2004; 32:1-7. [PMID: 14963775] [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] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
INTRODUCTION Our objective is to present the impact on quality of life of long-term olanzapine treatment in a significant number of schizophrenics as determined by the Seville Quality of Life Questionnaire (SQLQ), an instrument that addresses the aspects that particularly affect these patients, and to evaluate the sensitivity of this instrument to the changes induced by this treatment. METHODS Three hundred and seventy two patients with the diagnosis of schizophrenia as per the ICD-10 classification were evaluated in a 1 year prospective study after switching to olanzapine. The SQLQ, Lehman's structured interview and short version of the discapacity assessment scale were used to evaluate patient's subjective experience; in addition, other instruments were used to evaluate psychopathology. RESULTS Significant increases in the scores of the favorable scale and decreases in the unfavorable scale of the SQLQ were found. There were also significant improvements in quality of life as measured with Lehman's structured interview. This improvement continued until the end of the 1 year follow-up after switching to olanzapine. Both instruments show a good correlation. Changes in psychopathology were also remarkable, including the negative symptoms. CONCLUSIONS The SQLQ has proven to be a sensitive instrument to measure quality of life in schizophrenic patients treated with olanzapine. It focuses on aspects that are relevant for patients that were frequently overlooked by treating physicians. This drug has been proven to have a favorable subjective impact upon patients, besides improving psychopathology.
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Affiliation(s)
- J Giner
- Departmento de Psiquitría, Universidad de Sevilla, Seville.
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González-Lopera S, Moreno J, López-Duque J, Ibáñez E, Unamuno M, Rodríguez-Escudero F. Adenosarcoma uterino. Nuestra casuística. Clínica e Investigación en Ginecología y Obstetricia 2004. [DOI: 10.1016/s0210-573x(04)77369-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
In the present study, a headspace solid-phase microextraction (HS-SPME) combined to gas chromatography-mass spectrometry (GC-MS) has been used to fully characterize aroma of truffles of different species. A fiber of medium polarity (for flavors) was used to avoid discrimination towards very non-polar and polar volatile compounds. In a previous work, extraction conditions were optimized by means of an experimental design leading to the following conditions that were used in the present study: extraction temperature, 53 degrees C; extraction time, 13.6 min; and equilibrium time, 5 min. A comparison among different truffles species has been established in terms of qualitative and quantitative differences on volatile composition. By using the optimal extraction conditions and GC-MS it was possible to identify 89 compounds in two different truffle species such as Tuber aestivum and Tuber melanosporum. An attempt has been made in order to be able to determine the influence of different geographical origins on the aroma fraction of such fungi.
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Affiliation(s)
- P Díaz
- Universidad Católica de Avila, Canteros s/n, 05005 Avila, Spain
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Affiliation(s)
- M. Orejas
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de Alimentos, Consejo Superior de Investigaciones Científicas, Valencia, Spain
| | - E. Ibáñez
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de Alimentos, Consejo Superior de Investigaciones Científicas, Valencia, Spain
| | - D. Ramón
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de Alimentos, Consejo Superior de Investigaciones Científicas, Valencia, Spain
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Giner J, Ibáñez E, Cervera S, Sanmartín A, Caballero R. [Subjective experience and quality of life in schizophrenia]. Actas Esp Psiquiatr 2001; 29:233-42. [PMID: 11470058] [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] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
The term quality of life has been gradually introduced in the field of Psychiatry. This term tries to integrate not only the symptoms in Psychiatric patients, but also other aspects, like individual perceptions, personal expectations, degree of independence, etc., in order to achieve a global understanding of the patient. The are few studies on quality of life in schizophrenia, especially there is a lack of self assessment scales that the patients can fill out about themselves and their psychological environment. The Seville Quality of Life Questionnaire tries to evaluate the subjective experience of patients with schizophrenia about their illness. The Seville Quality of Life Questionnaire also checks the presence or absence of groups of patients with schizophrenia with a better or worst quality of life. We have assessed 222 subjects that meet ICD-10 criteria diagnostic for schizophrenia, with the Seville Quality of Life Questionnaire, the Positive and Negative Symptom Scale specific psychopathology scale and the AMDP system general psychopathology scale. Our results show two clearly differentiate groups: one with better (Group 2: 108 patients) and one with worse (Group 1: 81 patients) quality of life. However, 33 patients could not be included in any of the two groups. In the worse quality of life group the most prominent factors were: lack of cognitive grasp, perplexity, fear of loss of control, and contained hostility. These four factors have a great influence on the worse quality of life. When we compare the Seville Quality of Life Questionnaire data with several the Positive and Negative Symptom Scale scores, we saw that the group of worse quality of life presents higher scores on both Negative and Positive Symptoms of schizophrenia, and also in the Positive and Negative Symptom Scale general psychopathology scale. In the AMDP system general psychopathology scale we saw three groups of significant symptoms in the Seville Quality of Life Questionnaire: 1. Difficult relationships with the external world, 2. Difficulty to understand what it happening (loss of associations); and 3. Affective alterations (ambivalence).Finally, these data suggests that it is probable that the Seville Quality of Life Questionnaire could be able to build a typology of patients with schizophrenia more centred in their pathology that in their psychophatology.
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Affiliation(s)
- J Giner
- Departamento de Psiquiatría, Personalidad, Evaluación y Tratamiento Psicológicos, Universidad de Sevilla, Spain
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Ibáñez E, Molist J, Vidal F, Egozcue J, Santaló J. Assessment of the proportion of transgene-bearing sperm by fluorescence in situ hybridization: a novel approach for the detection of germline mosaicism in transgenic male founders. Mol Reprod Dev 2001; 58:166-72. [PMID: 11139228 DOI: 10.1002/1098-2795(200102)58:2<166::aid-mrd5>3.0.co;2-y] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Genetic mosaicism is frequent among transgenic animals produced by pronuclear microinjection. A successful method for the screening of founder animals for germline mosaicism prior to mating would greatly reduce the costs associated with the propagation of the transgenic lines, and improve the efficiency of transgenic livestock production. With this aim, we have devised a simple method to detect integrated transgenes in individual spermatozoa using fluorescence in situ hybridization (FISH). The experiments reported here were undertaken to investigate the efficiency of this FISH-based approach to accurately evaluate the proportion of transgene-bearing sperm and to be applied for the detection of potential germline mosaics. Sperm samples from mice homozygous and hemizygous for a beta-lactoglobulin transgene were analyzed in a first set of experiments. A high hybridization efficiency was achieved, and the proportions of transgene-positive sperm cells in both homozygous (94.8-98.2%) and hemizygous (49.8-51.9%) animals were close to the expected frequencies (100 and 50%, respectively). To evaluate the sensitivity of the assay more directly, simulated mosaic samples with 5, 10, 15, 20 and 40% of transgene-bearing spermatozoa were then prepared and analyzed by FISH. Significant differences in the frequency of transgene-positive sperm were observed between all mosaic samples, indicating that even small deviations (5%) from the expected 50% transgene transmission rate in a founder animal could be reliably detected with our assay. Therefore, the method proposed represents a novel approach for the identification of germline mosaic founder males in livestock transgenic projects and a much more economic and faster alternative to breeding.
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Affiliation(s)
- E Ibáñez
- Unitat de Biologia Cel.lular, Facultat de Ciències, Departament de Biologia Cel.lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Bellaterra, Spain.
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Saez F, Urresola A, Larena JA, Martín JI, Pijuán JI, Schneider J, Ibáñez E. Endometrial carcinoma: assessment of myometrial invasion with plain and gadolinium-enhanced MR imaging. J Magn Reson Imaging 2000; 12:460-6. [PMID: 10992314 DOI: 10.1002/1522-2586(200009)12:3<460::aid-jmri12>3.0.co;2-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [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: 11/12/2022] Open
Abstract
The purpose of this study was to determine the accuracy of magnetic resonance imaging (MRI) for evaluating the depth of myometrial invasion, potential sources of pitfalls, and the usefulness of contrast-enhanced series. Eighty-five patients with a pathologic diagnosis of endometrial carcinoma underwent preoperative MRI (plain and contrast-enhanced). Grade of myometrial invasion, presence of junctional zone (JZ), fibromyomas, and tumoral thickness were evaluated by two groups of radiologists blinded to pathologic results. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of MRI in determining the depth of myometrial invasion were evaluated. The sensitivity/specificity for plain MR was 64.1-64.1/93.5-100 for both observers. Assessing deep myometrial invasion, sensitivity, and NPV improved significantly (P = 0.002, P = 0.003 for both observers) when comparing plain and whole study series. Tumoral thickness (P = 0.16, P = 0.13, for the two observers) and presence or absence of JZ (P = 0.41, P = 0.14) did not influence myometrial invasion assessment. Gadolinium-enhanced series improve the assessment of deep myometrial invasion in endometrial carcinoma. J. Magn. Reson. Imaging 2000;12:460-466.
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Affiliation(s)
- F Saez
- Department of Radiology, Hospital de Cruces, University of the Basque Country, Cruces, Baracaldo, Basque Country, Spain.
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Ibáñez E, Palacios J, Señoráns FJ, Santa-María G, Tabera J, Reglero G. Isolation and separation of tocopherols from olive by-products with supercritical fluids. J AM OIL CHEM SOC 2000. [DOI: 10.1007/s11746-000-0030-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- E. Ibáñez
- ; Instituto de Fermentaciones Industriales; C.S.I.C.; Juan de la Cierva 3 28006 Madrid Spain
| | - J. Palacios
- ; Instituto de Fermentaciones Industriales; C.S.I.C.; Juan de la Cierva 3 28006 Madrid Spain
| | - F. J. Señoráns
- ; Departamento de Química Agrícola, Geología y Geoquímica, Facultad de Ciencias; Universidad Autónoma de Madrid; Ciudad Universitaria de Cantoblanco 28049 Madrid Spain
| | - G. Santa-María
- ; Instituto de Fermentaciones Industriales; C.S.I.C.; Juan de la Cierva 3 28006 Madrid Spain
| | - J. Tabera
- ; Departamento de Química Agrícola, Geología y Geoquímica, Facultad de Ciencias; Universidad Autónoma de Madrid; Ciudad Universitaria de Cantoblanco 28049 Madrid Spain
| | - G. Reglero
- ; Departamento de Química Agrícola, Geología y Geoquímica, Facultad de Ciencias; Universidad Autónoma de Madrid; Ciudad Universitaria de Cantoblanco 28049 Madrid Spain
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Ibáñez E, Oca A, de Murga G, López-Sebastián S, Tabera J, Reglero G. Supercritical fluid extraction and fractionation of different preprocessed rosemary plants. J Agric Food Chem 1999; 47:1400-1404. [PMID: 10563988 DOI: 10.1021/jf980982f] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two-step supercritical fluid extraction of rosemary leaves at selected conditions of pressure and temperature is proposed to divide the oleoresin into two fractions with different antioxidant activities and essential oil compositions. Rosemary leaves obtained from different sources have been extracted and evaluated in terms of antioxidant activity and essential oil yield and composition. Also, a new device is proposed to improve the performance of the technique in terms of sample collection after SFE.
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Affiliation(s)
- E Ibáñez
- Instituto de Fermentaciones Industriales, CSIC, Madrid, Spain
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Giner J, Ibáñez E, Cervera S, Leal C, Baca E, Bobes J. [Seville Quality of Life Questionnaire: historic outlook of its establishment]. Actas Esp Psiquiatr 1999; 27:8-13. [PMID: 10380142] [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] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
We describe how we developed a new instrument for measuring quality of life, the Seville Quality of Life Questionnaire (SQCQ), and the results we obtained when we applied it to a group of schizophrenic patients. The questionnaire was designed by a group of researchers who set out from the premise that the quality of life of schizophrenic patients is perceived differently from that of healthy people, and tried first of all to demarcate the kind of area which is abnormal in these patients. We then devised a set of items which were assessed for clarity and pertinence by a series of experts, and the questionnaire was assembled in the form of a set of statements, response to which is in the form of a Lickert-type 5-stage scale. The finished questionnaire was administered to 279 schizophrenic patients. At the same time, these patients were also evaluated using the AMDP Psychopathology Scale, the positive and negative symptoms evaluation scale (PANS), Lehman's structured quality of life interview (QOLY), Ruiz and Baca's quality of life questionnaire (QLQ), Camberwell's scale of needs analysis (CANr) and the WHO's handicap assessment scale (DDS). These questionnaires were used to judge the different types of validity of the Seville Questionnaire. The reliability of the questionnaire was measured using Cronbach's alpha coefficient (internal consistency: 0,85 scale of favourable aspects, 0,96 scale of unfavourable aspects). As far as validity was concerned, both scales of the questionnaire were found to have a high level of validity. We also examined the extent to which the psychopathological disorders affected the quality of the schizophrenic person's life, the extent to which his/her needs were being met by the health services, and the patient's degree of disability. From the results obtained, we can say that the SQCQ is a reliable and valid instrument, which is sufficiently sensitive to the clinical changes produced in the course of the natural history of the disease. The SQCQ stands out from the other quality of life questionnaires in that it takes into account aspects of the disease which the patient him/herself is aware of as affecting his/her quality of life.
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Affiliation(s)
- J Giner
- Servicio de Psiquiatría,Hospital Clínico Universitario, Sevilla, Sevilla, 41009,España
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Badía J, Ibáñez E, Sabaté M, Baldomà L, Aguilar J. A rare 920-kilobase chromosomal inversion mediated by IS1 transposition causes constitutive expression of the yiaK-S operon for carbohydrate utilization in Escherichia coli. J Biol Chem 1998; 273:8376-81. [PMID: 9525947 DOI: 10.1074/jbc.273.14.8376] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [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: 11/06/2022] Open
Abstract
The regulator of the yiaK-S operon, currently assigned a carbohydrate utilization function in Escherichia coli, is inactivated by a genome rearrangement that leads to the constitutive expression of the operon. The yiaK-S constitutive cells acquire the ability to utilize the rare pentose L-lyxose. Restriction analysis and sequencing of the regulator gene indicate that it is disrupted by foreign DNA. The insert consists of a large inverted fragment of DNA of 920 kilobases flanked by two IS1 elements with opposite polarity. One corresponds to that found naturally at min 0.4 of the bacterial chromosome and the other to a new copy transposed into the regulator gene located at min 80.6. This insertion-inversion could be the result of the intramolecular transposition mechanism itself, a gene rearrangement rarely originated by IS1. Alternatively, it could be attributed to the homologous recombination between the IS1 at min 0.4 and the IS1 transposed intermolecularly into the yiaK-S regulator gene. The participation of a rare IS1-mediated inversion in the evolution of a stable phenotype is thus identified.
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Affiliation(s)
- J Badía
- Department of Biochemistry, School of Pharmacy, University of Barcelona, Diagonal 643, 08028 Barcelona, Spain
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López-Sebastián S, Ramos E, Ibáñez E, Bueno JM, Ballester L, Tabera J, Reglero G. Dearomatization of Antioxidant Rosemary Extracts by Treatment with Supercritical Carbon Dioxide. J Agric Food Chem 1998; 46:13-19. [PMID: 10554189 DOI: 10.1021/jf970565n] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Treatment with supercritical CO(2) is proposed for deodorizing antioxidant rosemary extracts obtained by steam distillation and Soxhlet extraction. The process conditions have been optimized by applying a Taguchi experimental design with the aim of obtaining, at minimum cost, a product with acceptable antioxidant activity as well as minimum rosemary aroma. Variables were selected for their effects on the selective extraction of the compounds responsible for the residual aroma of the rosemary extract. The optimized method allowed 90% dearomatization; no detrimental effects in antioxidant activity or color of the extracts have been observed after supercritical fluid processing.
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Affiliation(s)
- S López-Sebastián
- Instituto de Fermentaciones Industriales, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Hausmann Aromatic S.A., Polígono Industrial Torre Bovera, Pasaje 10, 08740 San Andrés de la Barca, Barcelona, Spain
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Abstract
As an economical and safer alternative to the maintenance of transgenic animals as live stocks, transgenic embryo cryobanks can be generated and maintained indefinitely. Two-cell embryos obtained from four lines of caprine beta-lactoglobulin transgenic mice homozygous for the transgene were cryopreserved, and their response to cryopreservation-related stress was investigated. Significant differences between transgenic lines were found in the viability of frozen/thawed transgenic embryos and also in two-cell embryo production after superovulatory treatment of transgenic females. The results of this study suggest that cryopreservation protocols should be assessed on each transgenic line before the generation of transgenic embryo banks.
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Affiliation(s)
- E Ibáñez
- Departament de Biologia Cellular i Fisiologia, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
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Abstract
A 14.5 kb-long transgene containing the complete caprine beta-lactoglobulin gene transcription unit as well as 6.1 kb and 3.7 kb of the 5'- and 3'-flanking regions, respectively, was microinjected into pronuclear stage mouse embryos. Four lines of transgenic mice were obtained, three of them expressing the transgene in their mammary glands during lactation. Western blot analysis of caprine beta-lactoglobulin in the milk of hemizygous transgenic animals demonstrated the presence of the exogenous protein at concentrations up to 0.5 mg ml-1 of mouse milk.
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Affiliation(s)
- E Ibáñez
- Departament de Biologia Cellular i Fisiologia, Facultat de Ciències, Universitat Autònoma de Barcelona, Spain
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Ibáñez E, Tabera J, Reglero G, Herraiz M. Optimization of fat-soluble vitamin separation by supercritical fluid chromatography. Chromatographia 1995. [DOI: 10.1007/bf02269911] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [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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