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Rosales J, Jiménez T, Chahboun R, Huertos MA, Millán A, Justicia J. Mild and Selective Hydrogenation of Unsaturated Compounds Using Mn/Water as a Hydrogen Gas Source. Org Lett 2024; 26:2147-2151. [PMID: 38096174 DOI: 10.1021/acs.orglett.3c03664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
A mild and highly selective reduction of alkenes and alkynes using Mn/water is described. The highly controlled generation of H2 allows the selective reduction of these compounds in the presence of labile functional groups under mild and environmentally acceptable conditions.
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Affiliation(s)
- Jennifer Rosales
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, C. U. Fuentenueva s/n, 18071 Granada, Spain
| | - Tania Jiménez
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, C. U. Fuentenueva s/n, 18071 Granada, Spain
| | - Rachid Chahboun
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, C. U. Fuentenueva s/n, 18071 Granada, Spain
| | - Miguel A Huertos
- University of Basque Country (UPV/EHU), 20018 Donostia-San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Alba Millán
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, C. U. Fuentenueva s/n, 18071 Granada, Spain
| | - José Justicia
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, C. U. Fuentenueva s/n, 18071 Granada, Spain
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Borsa BA, Hernandez LI, Jiménez T, Tellapragada C, Giske CG, Hernandez FJ. Therapeutic-oligonucleotides activated by nucleases (TOUCAN): A nanocarrier system for the specific delivery of clinical nucleoside analogues. J Control Release 2023; 361:260-269. [PMID: 37541593 DOI: 10.1016/j.jconrel.2023.07.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 07/25/2023] [Accepted: 07/31/2023] [Indexed: 08/06/2023]
Abstract
Nucleoside analogues have been in clinical use since 1960s and they are still used as the first therapeutic option for several cancers and viral infections, due to their high therapeutic efficacy. However, their wide clinical acceptance has been limited due to their high toxicity and severe side effects to patients. Herein, we report on a nanocarrier system that delivers nucleosides analogues in a target-specific manner, making nucleoside-based therapeutics safer and with the possibility to be used in other human conditions. This system, named, Therapeutic OligonUCleotides Activated by Nucleases" (TOUCAN) combines: i) the recognition power of oligonucleotides as substrates, ii) the use of nucleases as enzymatic biomarkers and iii) the clinical efficacy of nucleoside analogues, in a single approach. As a proof-of-concept, we report on a TOUCAN that is activated by a specific nuclease produced by bacteria and releases a therapeutic nucleoside, floxuridine. We demonstrate, for the first time, that, by incorporating a therapeutic nucleoside analogue into oligonucleotide probes, we can specifically inhibit bacterial growth in cultures. In this study, Staphylococcus aureus was selected as the targeted bacteria and the TOUCAN strategy successfully inhibited its growth with minimal inhibitory concentration (MIC) values ranging from 0.62 to 40 mg/L across all tested strains. Moreover, our results indicate that the intravenous administration of TOUCANs at a dose of 20 mg/kg over a 24-h period is a highly effective method for treating bacterial infections in a mouse model of pyomyositis. Importantly, no signs of toxicity were observed in our in vitro and in vivo studies. This work can significantly impact the current management of bacterial infections, laying the grounds for the development of a different class of antibiotics. Furthermore, it can provide a safer delivery platform for clinical nucleoside therapeutics in any human conditions, such as cancer and viral infection, where specific nuclease activity has been reported.
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Affiliation(s)
- Baris A Borsa
- Wallenberg Center for Molecular Medicine (WCMM), Linköping, Sweden; Department of Physics, Chemistry and Biology (IFM), Linköping University, Sweden; Nucleic Acid Technologies Laboratory (NAT-Lab), Linköping, Sweden
| | - Luiza I Hernandez
- Department of Clinical and Experimental Medicine (IKE), Linköping University, Sweden; SOMAprobes, Science and Technology Park of Gipuzkoa, Donostia-San Sebastian, Spain
| | - Tania Jiménez
- SOMAprobes, Science and Technology Park of Gipuzkoa, Donostia-San Sebastian, Spain
| | - Chaitanya Tellapragada
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden; Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | - Christian G Giske
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden; Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | - Frank J Hernandez
- Wallenberg Center for Molecular Medicine (WCMM), Linköping, Sweden; Department of Physics, Chemistry and Biology (IFM), Linköping University, Sweden; Nucleic Acid Technologies Laboratory (NAT-Lab), Linköping, Sweden.
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Machado I, Goikoetxea G, Alday E, Jiménez T, Arias-Moreno X, Hernandez FJ, Hernandez LI. Ultra-Sensitive and Specific Detection of S. aureus Bacterial Cultures Using an Oligonucleotide Probe Integrated in a Lateral Flow-Based Device. Diagnostics (Basel) 2021; 11:diagnostics11112022. [PMID: 34829369 PMCID: PMC8619029 DOI: 10.3390/diagnostics11112022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 11/25/2022] Open
Abstract
The identification of pathogens causing infectious diseases is still based on laborious and time-consuming techniques. Therefore, there is an urgent need for the development of novel methods and devices that can considerably reduce detection times, allowing the health professionals to administer the right treatment at the right time. Lateral flow-based systems provide fast, cheap and easy to use alternatives for diagnosis. Herein, we report on a lateral flow approach for specifically detecting S. aureus bacteria within 6 h.
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Affiliation(s)
- Isabel Machado
- SOMAprobes S.L., Mikeletegi Pasealekua, 83, 20009 Donostia, Spain; (I.M.); (G.G.); (E.A.); (T.J.); (X.A.-M.)
| | - Garazi Goikoetxea
- SOMAprobes S.L., Mikeletegi Pasealekua, 83, 20009 Donostia, Spain; (I.M.); (G.G.); (E.A.); (T.J.); (X.A.-M.)
- Department of Cellular Biology and Histology, Faculty of Medicine and Odontology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - Enara Alday
- SOMAprobes S.L., Mikeletegi Pasealekua, 83, 20009 Donostia, Spain; (I.M.); (G.G.); (E.A.); (T.J.); (X.A.-M.)
| | - Tania Jiménez
- SOMAprobes S.L., Mikeletegi Pasealekua, 83, 20009 Donostia, Spain; (I.M.); (G.G.); (E.A.); (T.J.); (X.A.-M.)
| | - Xabier Arias-Moreno
- SOMAprobes S.L., Mikeletegi Pasealekua, 83, 20009 Donostia, Spain; (I.M.); (G.G.); (E.A.); (T.J.); (X.A.-M.)
| | - Frank J. Hernandez
- Department of Physics, Chemistry and Biology, Linköping University, 58185 Linköping, Sweden;
- Wallenberg Centre for Molecular Medicine, Linköping University, 58185 Linköping, Sweden
| | - Luiza I. Hernandez
- SOMAprobes S.L., Mikeletegi Pasealekua, 83, 20009 Donostia, Spain; (I.M.); (G.G.); (E.A.); (T.J.); (X.A.-M.)
- Correspondence:
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Jiménez T, Botero J, Otaegui D, Calvo J, Hernandez FJ, San Sebastian E. Rational Design and Experimental Analysis of Short-Oligonucleotide Substrate Specificity for Targeting Bacterial Nucleases. J Med Chem 2021; 64:12855-12864. [PMID: 34460263 PMCID: PMC8436206 DOI: 10.1021/acs.jmedchem.1c00884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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An undecamer oligonucleotide probe
based on a pair of deoxythymidines
flanked by several modified nucleotides is a specific and highly efficient
biosensor for micrococcal nuclease (MNase), an endonuclease produced
by Staphylococcus aureus. Herein, the
interaction mode and cleavage process on such oligonucleotide probes
are identified and described for the first time. Also, we designed
truncated pentamer probes as the minimum-length substrates required
for specific and efficient biosensing. By means of computational (virtual
docking) and experimental (ultra-performance liquid chromatography–mass
spectrometry and matrix-assisted laser desorption ionization time-of-flight)
techniques, we perform a sequence/structure–activity relationship
analysis, propose a catalytically active substrate–enzyme complex,
and elucidate a novel two-step phosphodiester bond hydrolysis mechanism,
identifying the cleavage sites and detecting and quantifying the resulting
probe fragments. Our results unravel a picture of both the enzyme–biosensor
complex and a two-step cleavage/biosensing mechanism, key to the rational
oligonucleotide design process.
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Affiliation(s)
- Tania Jiménez
- Somaprobes S.L, Mikeletegi Pasealekua, 83, 20009 Donostia, Gipuzkoa, Spain
| | - Juliana Botero
- Somaprobes S.L, Mikeletegi Pasealekua, 83, 20009 Donostia, Gipuzkoa, Spain.,Applied Chemistry Department, University of the Basque Country (UPV/EHU), 20018 San Sebastián, Spain
| | - Dorleta Otaegui
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), San Sebastian 20014, Spain
| | - Javier Calvo
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), San Sebastian 20014, Spain
| | - Frank J Hernandez
- Wallenberg Center for Molecular Medicine (WCMM), 58185 Linköping, Sweden.,Department of Physics, Chemistry and Biology, Linköping University, 58185 Linköping, Sweden
| | - Eider San Sebastian
- Applied Chemistry Department, University of the Basque Country (UPV/EHU), 20018 San Sebastián, Spain
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Hernandez LI, Araúzo-Bravo MJ, Gerovska D, Solaun RR, Machado I, Balian A, Botero J, Jiménez T, Zuriarrain Bergara O, Larburu Gurruchaga L, Urruticoechea A, Hernandez FJ. Discovery and Proof-of-Concept Study of Nuclease Activity as a Novel Biomarker for Breast Cancer Tumors. Cancers (Basel) 2021; 13:cancers13020276. [PMID: 33451046 PMCID: PMC7828568 DOI: 10.3390/cancers13020276] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/08/2021] [Accepted: 01/09/2021] [Indexed: 01/22/2023] Open
Abstract
Simple Summary A diagnostic biomarker for the detection of breast cancer remains an unmet clinical need despite decades of intensive research efforts. Herein, we describe, for the first time, the use of nuclease activity as a biomarker to discriminate between healthy and cancer biopsy samples. We have identified a panel of three nucleic acid probes able to target nucleases derived from breast cancer tumors with high sensitivity and specificity. These results are in good agreement with histopathological analysis as the diagnostic gold standard. Moreover, these findings support nuclease activity as a potential adjacent diagnostic tool and shed light on the use of nuclease activity as a detection biomarker in breast cancer. Abstract Breast cancer is one of the most common pathologies diagnosed in the clinical practice. Despite major advancements in diagnostic approaches, there is no widely accepted biomarker in the clinical practice that can diagnose breast malignancy. Confirmatory diagnosis still relies on the pathological assessment of tissue biopsies by expert pathologists. Thus, there is an unmet need for new types of biomarkers and novel platform technologies that can be easily and robustly integrated into the clinic and that can assist pathologists. Herein, we show that nuclease activity associated to malignant tumors can be used as a novel biomarker in breast cancer, which can be detected via specific degradation of nucleic acid probes. In this study we have identified a set of three chemically modified nucleic acid probes that can diagnose malignancy in biopsy samples with high accuracy (89%), sensitivity (82%) and specificity (94%). This work represents a breakthrough for the potential clinical use of nuclease activity as biomarker, which can be detected via nucleic acids probes, for the clinical diagnosis of malignancy in breast tissue biopsies. This platform technology could be readily implemented into the clinic as adjunct to histopathological diagnostic.
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Affiliation(s)
- Luiza I. Hernandez
- SOMAprobes S.L, Science and Technology Park of Gipuzkoa, 20009 San Sebastian, Spain; (L.I.H.); (I.M.); (J.B.); (T.J.)
| | - Marcos J. Araúzo-Bravo
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, 48149 Münster, Germany;
- Computational Biology and Systems Biomedicine, Biodonostia Health Research Institute, 20014 San Sebastian, Spain;
- IKERBASQUE, Basque Foundation for Science, Calle María Díaz Harokoa 3, 48013 Bilbao, Spain
| | - Daniela Gerovska
- Computational Biology and Systems Biomedicine, Biodonostia Health Research Institute, 20014 San Sebastian, Spain;
| | | | - Isabel Machado
- SOMAprobes S.L, Science and Technology Park of Gipuzkoa, 20009 San Sebastian, Spain; (L.I.H.); (I.M.); (J.B.); (T.J.)
| | - Alien Balian
- Wallenberg Center for Molecular Medicine (WCMM), 58185 Linköping, Sweden;
- Department of Physics, Chemistry and Biology, Linköping University, 58185 Linköping, Sweden
| | - Juliana Botero
- SOMAprobes S.L, Science and Technology Park of Gipuzkoa, 20009 San Sebastian, Spain; (L.I.H.); (I.M.); (J.B.); (T.J.)
| | - Tania Jiménez
- SOMAprobes S.L, Science and Technology Park of Gipuzkoa, 20009 San Sebastian, Spain; (L.I.H.); (I.M.); (J.B.); (T.J.)
| | - Olaia Zuriarrain Bergara
- Department of Oncology, Onkologikoa Foundation, 20014 San Sebastián, Spain; (O.Z.B.); (L.L.G.); (A.U.)
| | - Lide Larburu Gurruchaga
- Department of Oncology, Onkologikoa Foundation, 20014 San Sebastián, Spain; (O.Z.B.); (L.L.G.); (A.U.)
| | - Ander Urruticoechea
- Department of Oncology, Onkologikoa Foundation, 20014 San Sebastián, Spain; (O.Z.B.); (L.L.G.); (A.U.)
| | - Frank J. Hernandez
- Wallenberg Center for Molecular Medicine (WCMM), 58185 Linköping, Sweden;
- Department of Physics, Chemistry and Biology, Linköping University, 58185 Linköping, Sweden
- Correspondence: ; Tel.: +46-013-281-147
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Jiménez T, Martínez-Anaya* M. Amylases and Hemicellulases in Breadmaking. Degradation By-Products and Potential Relationship with Functionality. FOOD SCI TECHNOL INT 2016. [DOI: 10.1106/7u5g-5akq-hvbq-4xa0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Eleven commercial enzyme preparations, based on pentosanase and/or amylase activities, were added to wheat doughs and were processed to bread. Changes in free sugars, maltodextrins and carbohydrate polymer degradation—starch and pentosans—during fermentation, baking and storage are reported, and their possible relationship to functional properties is evaluated. The main activity of preparations was endo-type, although some arabinosidase action was present, even in•-amylases without other declared activity. Dextrinogenic (low molecular weight) properties of•-amylases depended on the source, and within the same manufacturer, on the enzyme characteristics. The majority of preparations solubilized part of pentosans, changes consistent with reported enzyme composition. Storage of breads induced variations in soluble starch and solids, which were affected by the enzymes. Some low molecular weight dextrins correlated with fresh bread properties, favored crumb and starch solubilization and did not induce changes in texture during storage, whereas water-insoluble pentosans correlated with crumb elasticity and hardness during storage.
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Affiliation(s)
| | - M.A. Martínez-Anaya*
- Instituto de Agroquímica y Tecnología de Alimentos, CSIC. Polígono La Coma s/n, 46980 Paterna, Valencia, Spain
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Abstract
The intramolecular gold(I)-catalyzed [2+2+2] cycloaddition of oxo-1,5-enynes bearing protected homopropargylic alcohols provides access to oxatricyclic adducts with good to excellent diastereoselectivity.
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Affiliation(s)
- Pilar Calleja
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology
| | - Michael Muratore
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology
| | - Tania Jiménez
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology
| | - Antonio Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology
- Departament de Química Orgànica i Analítica, Universitat Rovira i Virgili
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Andreu J, Martín M, Pérez-Venegas J, Román-Ivorra JA, Corominas H, Gil A, Sánchez-Alonso F, Jiménez T, Sánchez Ruiz M. SAT0117 Quality Assessment in The Management of Patients with Rheumatoid Arthritis. Implementation of The “Treat To Target” Strategy. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
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The
gold(I)-catalyzed intramolecular reaction of allenes with oxoalkenes
leads to bicyclo[6.3.0]undecane ring systems, although in the case
of terminally disubstituted allenes, seven-membered rings are formed.
The related intermolecular addition of aldehydes to allenenes also
gives seven-membered rings.
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Affiliation(s)
- Tania Jiménez
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology , Av Països Catalans 16, 43007 Tarragona, Spain
| | - Javier Carreras
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology , Av Països Catalans 16, 43007 Tarragona, Spain
| | - Julien Ceccon
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology , Av Països Catalans 16, 43007 Tarragona, Spain
| | - Antonio M Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology , Av Països Catalans 16, 43007 Tarragona, Spain.,Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili , C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
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Pérez MM, Hernández JM, Bossens J, Jiménez T, Rosa E, Tack F. Vertical flow constructed wetlands: kinetics of nutrient and organic matter removal. Water Sci Technol 2014; 70:76-81. [PMID: 25026582 DOI: 10.2166/wst.2014.183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The kinetics of organic matter and nutrient removal in a pilot vertical subsurface wetland with red ferralitic soil as substrate were evaluated. The wetland (20 m(2)) was planted with Cyperus alternifolius. The domestic wastewater that was treated in the wetland had undergone a primary treatment consisting of a septic moat and a buffer tank. From the sixth week of operation, the performance of the wetland stabilized, and a significant reduction in pollutant concentration of the effluent wastewater was obtained. Also a significant increase of dissolved oxygen (5 mg/l) was obtained. The organic matter removal efficiency was greater than 85% and the nutrient removal efficiency was greater than 75% in the vertical subsurface wetland. Nitrogen and biochemical oxygen demand (BOD) removal could be described by a first-order model. The kinetic constants were 3.64 and 3.27 d(-1) for BOD and for total nitrogen, respectively. Data on the removal of phosphorus were adapted to a second-order model. The kinetic constant was 0.96 (mg/l)(-1) d(-1). The results demonstrated the potential of vertical flow constructed wetlands to clean treated domestic wastewater before discharge into the environment.
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Affiliation(s)
- M M Pérez
- Study Center of Applied Chemistry, Chemical Pharmacy Faculty, Central University of Las Villas, Cuba E-mail:
| | - J M Hernández
- Study Center of Applied Chemistry, Chemical Pharmacy Faculty, Central University of Las Villas, Cuba E-mail:
| | - J Bossens
- Department of Applied Analytical and Physical Chemistry, Faculty of Bioscience Engineering, Ghent University, Belgium
| | - T Jiménez
- Study Center of Applied Chemistry, Chemical Pharmacy Faculty, Central University of Las Villas, Cuba E-mail:
| | - E Rosa
- Study Center of Applied Chemistry, Chemical Pharmacy Faculty, Central University of Las Villas, Cuba E-mail:
| | - F Tack
- Department of Applied Analytical and Physical Chemistry, Faculty of Bioscience Engineering, Ghent University, Belgium
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Justicia J, Jiménez T, Miguel D, Contreras-Montoya R, Chahboun R, Álvarez-Manzaneda E, Collado-Sanz D, Cárdenas DJ, Cuerva JM. Titanocene(III)-Catalyzed 6-exoVersus 7-endoCyclizations of Epoxypolyprenes: Efficient Control and Synthesis of Versatile Terpenic Building Blocks. Chemistry 2013; 19:14484-95. [DOI: 10.1002/chem.201302575] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Indexed: 11/11/2022]
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Aguilera Y, Díaz MF, Jiménez T, Benítez V, Herrera T, Cuadrado C, Martín-Pedrosa M, Martín-Cabrejas MA. Changes in nonnutritional factors and antioxidant activity during germination of nonconventional legumes. J Agric Food Chem 2013; 61:8120-8125. [PMID: 23909570 DOI: 10.1021/jf4022652] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The present study describes the effects of germination on nonnutritional factors and antioxidant activity in the nonconventional legumes Vigna unguiculata (cowpea), Canavalia ensiformis (jack bean), Lablab purpureus (dolichos), and Stizolobium niveum (mucuna). Protease inhibitors and lectins were detected in raw legumes and were significantly decreased during the germination. Regarding total and individual inositol phosphates (IP5-IP3), important reductions of IP6 and high increases in the rest of inositol phosphates were also detected during this process. In addition, total phenols, catechins, and proanthocyanidins increased, accompanied by an overall rise of antioxidant activity (79.6 μmol of Trolox/g of DW in the case of mucuna). Germination has been shown to be a very effective process to reduce nonnutritional factors and increase bioactive phenolic compounds and antioxidant activities of these nonconventional legumes. For this reason, they could be used as ingredients to obtain high-value legume flours for food formulation.
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Affiliation(s)
- Yolanda Aguilera
- Instituto de Investigación de Ciencias de la Alimentación (CIAL), Facultad de Ciencias, Universidad Autónoma de Madrid, C/Nicolás Cabrera 9, Campus de Cantoblanco, 28049 Madrid, Spain
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Blanca L, Jiménez T, Cabello M, Sola E, Gutierrez C, Burgos D, Lopez V, Hernandez D. Cardiovascular risk in recipients with kidney transplants from expanded criteria donors. Transplant Proc 2013; 44:2579-81. [PMID: 23146460 DOI: 10.1016/j.transproceed.2012.09.086] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Posttransplant cardiovascular disease (CVD) is the leading cause of death in renal transplant (RT) recipients and is more evident in recipients with transplants from expanded criteria donors (ECD). OBJECTIVES We analyzed the evolution of cardiovascular risk factors and their association with patient mortality. MATERIALS AND METHODS We undertook a single-center, prospective study of RT patients (n = 360) between 1999 and 2006. These were 180 recipients with transplants from ECD and 180 controls. We analyzed the baseline characteristics and the cardiovascular risk factors: hypertension, diabetes, dyslipidemia, CVD, and anemia. Posttransplant analyses included the evolution of cardiovascular risk factors and causes of death. RESULTS The mean age of the ECD was 63.5 ± 5.4 versus 32.0 ± 13.2 years in the non-ECD (P < .001) and the recipient ages were 58.4 ± 8.7 versus 40.8 ± 13.3 years, respectively (P < .001). The median interquartile range [IQR] dialysis time was 25 months (15-39) versus 20 months (12-44; P = .017). The pretransplant body mass index was 26.89 ± 3.91 versus 25.43 ± 4.72 kg/m(2) (P = .002); the median (IQR) number of antihypertensive drugs was two (1-2) versus two (1-2.75; P = .015); dyslipidemia was present in 32.5% versus 21.6% (P = .024), diabetes in 10.6% versus 5.6% (P = .087), and CVD in 13.3% versus 7.8% (P = .086). Treatment with erythropoiesis-stimulating agents (ESA) was received by 84.9% versus 83.9% (P = .857). Concerning transplantation, the mean follow-up was 64.3 ± 33.7 months. Hypertension was present at 3 and 5 years in 85.6% versus 69.5% (P = .001) and 87.9% versus 72.8% (P = .009), respiratory. Treatment with angiotensin-converting enzyme inhibitors/angiotensin-II receptor blockers at 3 and 5 years was 79.8% versus 64.5% and 85.6% versus 65%. Dyslipidemia was present at 5 years in 63.1% versus 58.0% (P = .482). De novo diabetes occurred in 16.7% versus 11.1% (P = .128), and CVD in 13.5% versus 4.5% (P = .003). Univariate and multivariate Cox regression proportional hazards models were constructed to analyze the factors associated with patient death. CONCLUSIONS CVD is the most common cause of death in recipients of ECD, RT, 40% in the ECD group versus 28.6% in the control group. Tight control of cardiovascular risk factors and a good pretransplant patient selection contributed to the good results obtained.
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Affiliation(s)
- L Blanca
- Nephrology and Pathology Departments, H.U. Carlos Haya, Malaga, Spain.
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López Jiménez V, Fuentes L, Jiménez T, León M, Garcia I, Sola E, Cabello M, Gutierrez C, Burgos D, Ruiz P, Hernandez D. Transplant Glomerulopathy: Clinical Course and Factors Relating to Graft Survival. Transplant Proc 2012; 44:2599-600. [DOI: 10.1016/j.transproceed.2012.09.068] [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] [Indexed: 01/21/2023]
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Jiménez T, Morcillo SP, Martín-Lasanta A, Collado-Sanz D, Cárdenas DJ, Gansäuer A, Justicia J, Cuerva JM. Combining the Power of TiIII-Mediated Processes for Easy Access to Hydroxylated Polycyclic Terpenoids: Synthesis of Sesterstatin 1 and C-D Rings of Aspergilloxide. Chemistry 2012; 18:12825-33. [DOI: 10.1002/chem.201201534] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Indexed: 12/30/2022]
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Martín I, Jiménez T, Hernández-Nistal J, Dopico B, Labrador E. The βI-galactosidase of Cicer arietinum is located in thickened cell walls such as those of collenchyma, sclerenchyma and vascular tissue. Plant Biol (Stuttg) 2011; 13:777-783. [PMID: 21815982 DOI: 10.1111/j.1438-8677.2010.00437.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report localisation of the chickpea βI-Gal, a member of the chickpea β-galactosidase family, which contains at least four members. After generation of specific antibodies, the distribution and cellular immunolocalisation of the protein in different organs and developmental stages of the plant was studied. βI-Gal protein is much longer than the other chickpea β-galactosidases because of the presence of a lectin-like domain in the carboxyl terminus of the protein. Western blot experiments indicated that the active βI-Gal retains this lectin-like domain for its function in the plant. The βI-Gal protein was mainly detected in cell walls of elongating organs, such as seedling epicotyls and stem internodes. An immunolocation study indicated a very good correlation between the presence of this βΙ-galactosidase and cells whose walls are thickening, not only in aged epicotyls and mature internodes in the final phase of elongation, but mostly in cells with a support function, such as collenchyma cells, xylem and phloem fibres and a layer of sclerenchyma cells surrounding the vascular cylinder (perivascular fibres). These results could suggest a function for the βI-Gal in modification of cell wall polymers, leading to thicker walls than the primary cell walls.
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Affiliation(s)
- I Martín
- Departamento de Fisiología Vegetal, Centro Hispano Luso de Investigaciones Agrarias, Universidad de Salamanca, Salamanca, Spain
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Jiménez T, Barea E, Oltra JE, Cuerva JM, Justicia J. Mn(0)-mediated chemoselective reduction of aldehydes. Application to the synthesis of α-deuterioalcohols. J Org Chem 2011; 75:7022-5. [PMID: 20845967 DOI: 10.1021/jo1015618] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A mild, simple, safe, chemoselective reduction of different kinds of aldehydes to the corresponding alcohols mediated by the Mn dust/water system is described. In addition to this, the use of D(2)O leads to the synthesis of α-deuterated alcohols and constitutes an efficient, inexpensive alternative for the preparation of these compounds.
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Affiliation(s)
- Tania Jiménez
- Department of Organic Chemistry, Faculty of Sciences, University ofGranada, C. U. Fuentenueva s/n, 18071 Granada, Spain
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Hidalgo P, Jiménez T, Blanca L, Cobelo C, Burgos D, Garcia I, Hernández D. Recovery of Native Renal Function After Kidney Transplantation. Transplant Proc 2010; 42:3137-40. [DOI: 10.1016/j.transproceed.2010.05.126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Paradas M, Campaña AG, Jiménez T, Robles R, Oltra JE, Buñuel E, Justicia J, Cárdenas DJ, Cuerva JM. Understanding the Exceptional Hydrogen-Atom Donor Characteristics of Water in TiIII-Mediated Free-Radical Chemistry. J Am Chem Soc 2010; 132:12748-56. [DOI: 10.1021/ja105670h] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Miguel Paradas
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Araceli G. Campaña
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Tania Jiménez
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Rafael Robles
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - J. Enrique Oltra
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Elena Buñuel
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - José Justicia
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Diego J. Cárdenas
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Juan M. Cuerva
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
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Jiménez T, Campaña AG, Bazdi B, Paradas M, Arráez-Román D, Segura-Carretero A, Fernández-Gutiérrez A, Oltra JE, Robles R, Justicia J, Cuerva JM. Radical Reduction of Epoxides Using a Titanocene(III)/Water System: Synthesis of β-Deuterated Alcohols and Their Use as Internal Standards in Food Analysis. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000487] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Paradas M, Campaña AG, Estévez RE, Alvarez de Cienfuegos L, Jiménez T, Robles R, Cuerva JM, Oltra JE. Unexpected Ti(III)/Mn-promoted pinacol coupling of ketones. J Org Chem 2009; 74:3616-9. [PMID: 19334701 DOI: 10.1021/jo9005238] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Titanocene(III) chemistry has emerged in the last decades as an indispensable tool in C-C bond-forming reactions. In this context, pinacol and related reactions allow the stereoselective synthesis of vicinal diols. In this work, we present new applications of these reactions using as starting materials aromatic ketones. Simple and smooth reaction conditions have been developed and have been applied for inter- and intramolecular processes. We also describe that although Cp(2)TiCl is usually used as a monoelectronic reducing agent, it can be also used as an efficient Lewis acid.
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Affiliation(s)
- Miguel Paradas
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, E-18071 Granada, Spain
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Estévez RE, Paradas M, Millan A, Jiménez T, Robles R, Cuerva JM, Oltra JE. Ti-catalyzed reformatsky-type coupling between alpha-halo ketones and aldehydes. J Org Chem 2008; 73:1616-9. [PMID: 18189411 DOI: 10.1021/jo702189k] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We describe the first Ti-catalyzed Reformatsky-type coupling between alpha-halo ketones and aldehydes. The reaction affords beta-hydroxy ketones under mild, neutral conditions compatible with ketones and other electrophiles. The catalytic cycle possibly proceeds via bis(cyclopentadienyl)titanium enolates.
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Affiliation(s)
- Rosa E Estévez
- Department of Organic Chemistry, University of Granada, Faculty of Sciences, Campus Fuentenueva s/n, E-18071 Granada, Spain
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Hernández-Nistal J, Labrador E, Martín I, Jiménez T, Dopico B. Transcriptional profiling of cell wall protein genes in chickpea embryonic axes during germination and growth. Plant Physiol Biochem 2006; 44:684-92. [PMID: 17110120 DOI: 10.1016/j.plaphy.2006.10.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2006] [Accepted: 10/09/2006] [Indexed: 05/01/2023]
Abstract
Cell wall hydrolases have been assumed to be involved in the regulation of seed germination, mostly through their contribution to the cell wall disassembly associated with endosperm cap weakening. In Cicer arietinum (a non-endospermic leguminosae seed), we have focused our research directly on the elongation process of the embryonic axes themselves during germination. The genes encoding cell wall proteins, previously implicated in the elongation of chickpea epicotyls, might also be involved in the expansion of embryonic axis cells, and the modulation of their expression could be part of the control of the germinative process. Thus, chickpea alpha-expansins and xyloglucan endotransglycosylase/hydrolase (XTH) acting on the cellulose/xyloglucan network seem to be involved in the elongation of both chickpea epicotyls and embryonic axes, although the products of different genes perform their actions on each organ. Among the four known cDNAs encoding chickpea alpha-expansins, Ca-EXPA1 was the only isoform highly expressed in embryonic axes during germination. In contrast to epicotyl elongation, the genes encoding cell wall beta-galactosidases, involved in pectin degradation, were not expressed during germination, suggesting no role in embryonic axis elongation, mainly due to the different metabolism of pectins during cell wall loosening in embryonic axis or epicotyl cells. The results concerning CanST-1 and -2, encoding two growth-related cell wall proteins, suggested that these genes were not involved in elongation of embryonic axes during germination. The transcription pattern of Cap28, which encodes a glutamic acid rich cell wall protein of unknown function, indicated a role in the development of the embryonic axes during germination.
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Affiliation(s)
- J Hernández-Nistal
- Departamento de Fisiología Vegetal, Universidad de Santiago de Compostela, Lugo 27002, Spain
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Jiménez T, Rodríguez A, Vidal-Rios P. [New markers for the clinical management of thyroid nodules]. An Med Interna 2003; 20:391. [PMID: 12951981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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Torres-Rodríguez JM, Morera Y, Baró T, López O, Alía C, Jiménez T. In vitro susceptibility of Cryptococcus neoformans serotypes to GM 237354 derivative of the sordarin class. Mycoses 2002; 45:313-6. [PMID: 12572721 DOI: 10.1046/j.1439-0507.2002.00787.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In vitro susceptibility to the sordarin derivative GM 237354 and amphotericin B were tested in a total of 190 Cryptococcus neoformans clinical isolates from different geographical areas of Spain and South American countries. Minimal inhibitory concentrations (MICs) were obtained using the NCCLS reference microbroth dilution method and analysed according the serotypes of Cr. neoformans. The MICs for amphotericin B were lower than 1.0 microg ml(-1) (MIC90% 0.5 microg ml(-1) , MIC50% 0.125 microg ml(-1)) but five isolates showed MICs of 2.0 microg ml(-1) to GM 237354 (MIC90% 1.0 microg ml(-1), MIC50% 0.5 microg ml(-1)). Cryptococcus neoformans var. gattii serotype B, was significantly less susceptible than A and AD serotypes (P = 0.047 and P = 0.022, respectively).
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Affiliation(s)
- J M Torres-Rodríguez
- Clinical and Experimental Mycology Group (GREMEC), Institut Municipal d'Investigació Mèdica (IMIM), Autonomous University of Barcelona, Barcelona, Spain.
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Jiménez T, Martínez-Anaya M. Amylases and Hemicellulases in Breadmaking. Degradation By-Products and Potential Relationship with Functionality. FOOD SCI TECHNOL INT 2001. [DOI: 10.1177/108201301772662635] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
OBJECTIVE To describe the experience with liver irradiation in advanced cases of myelofibrosis with myeloid metaplasia (MMM). METHODS Over a 20-yr period, 14 patients with MMM were treated with a total of 25 courses of liver, abdominal, or abdominal and pelvic irradiation for symptomatic hepatomegaly with (5 patients) or without (9 patients) ascites. All 14 patients had advanced disease and 11 (79%) had previous splenectomy. The median radiation therapy (RT) dose per course was 150 cGy (range 50-1000) administered at a median of six fractions. Four patients received two to six courses. RESULTS Twelve of the 14 patients (86%) had a transient (median 3 months) subjective response from RT. However, in only 35% of these was there a transient (median 3 months) decrease in palpable liver size. Four of the five patients with ascites experienced a short-term response from RT. Eight of the 13 patients suitable for evaluation (62%) had treatment-associated cytopenia, often in the form of anemia and/or thrombocytopenia. At last follow-up, 10 patients (71%) had died after a median of 7 months (range 0.1-23) and 4 were alive at 3, 20, 33, and 57 months after RT. CONCLUSIONS Low-dose abdominal RT for symptomatic hepatomegaly or ascites associated with advanced-stage MMM is myelosuppressive and provides only temporary and mainly subjective and short-lived relief.
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Affiliation(s)
- A Tefferi
- Division of Hematology and Internal Medicine and Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
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Torres-Rodríguez JM, Madrenys N, Jiménez T, Saballs P. [Minimal inhibitory concentrations of Candida species to five antifungals by using the reference dilution micromethod and the E-test.]. Rev Iberoam Micol 1997; 14:115-8. [PMID: 17655386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023] Open
Abstract
It is accepted that the frequency of candidosis has increased during the last decade, specially in hospitalized patients. The more frequent use of azole antifungals and the recognition of isolates of Candida sp resistant to these and other drugs such as 5-fluorocytosine constitute a great need for a reproducible and useful C. albicans in vitro susceptibility testing method for monitoring antifungal therapy in clinical mycological laboratories. The E-test is a novel agar diffussion technique for testing the susceptibility of yeasts against a defined continous gradient of drug and could be used by most clinical laboratories. In this study the E-test and the NCCLS reference microbroth method (M27-P guidelines) were used to determine the MICs of amphotericin B, 5-flucytosine, itraconazole, fluconazole and ketoconazole for 50 clinical isolates of Candida albicans, Torulopsis glabrata, C. tropicalis and Hansenula anomala and five reference ATCC strains. The main purpose of the study was to compare the results obtained by the two methods. In general good agreement (+/- 1 dilution) was otained between both methods, despite differences observed for some species-antifungal combinations in which the MICs were lower by the E-test than by the microbroth method. MICs for C. albicans and T. glabrata to amphotericin B were < 0.50 microg/mL. Two isolates of C. albicans and two others of H. anomala, showed MIC < 8 microg/mL for 5- flucytosine. All isolates of T. glabrata and 40% of C. albicans showed MICs > 16 microg/mL for fluconazole. The results of this study indicate that E-test is an alternative for susceptibility testing to the NCCLS reference method. Because its simplicity it seems to be an easier test for routine clinical laboratories.
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Affiliation(s)
- J M Torres-Rodríguez
- Grup de Recerca en Micología Experimental i Clínica. IMIM/ Universitat Autónoma de Barcelona, Avda. Dr. Aiguader 80, 08003 Barcelona, España.
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Saleta JL, Rosales M, Domínguez V, Jiménez T, Marinas J, Bouzas ME. [Incidence and risk factors for nosocomial infections in a neonatology unit]. Enferm Infecc Microbiol Clin 1996; 14:357-60. [PMID: 8756213] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Neonatal nosocomial infection is a very important cause of morbidity and death in the hospital setting. The aim of our work is to study the incidence and risk factors associated with nosocomial infection in a neonatal unit. METHOD We followed 321 patients in a 6-month-long prospective, observational study. As units of measurement we used Incidence Density and Accumulative Incidence. For the statistical analysis we used chi-square and the logistic regression. RESULTS Nosocomial infection incidence density for the whole neonatal unit was 39.63% infections per 100 patients per month, while the accumulative incidence was 16.19%. Using a logistic regression method, the umbilical cord artery catheterization and days of stay variables both showed a statistically significant difference with nosocomial infection. CONCLUSIONS We conclude that minimizing length of stay, if possible below 10 days could be a key element to achieve a reduction in the neonatal unit's infection rate. However, new studies must be performed to ascertain if a strict enforcement of the rules pertaining to hand-washing and umbilical catheters manipulation would achieve further reductions in the infection rate associated with the umbilical cord catheterization.
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Affiliation(s)
- J L Saleta
- Servicio de Medicina Preventiva y Salud Publica, Complejo Hospitalario Juan Canalejo-Marítimo de Oza, La Coruña
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Blanquer JJ, Ortolá P, Rodríguez JJ, Rapa M, Melchor A, Jiménez T. [Evaluation of the health care demand at a primary care center and its codification by the WONCA-CIPSAP-2 classification]. Aten Primaria 1993; 12:495-6. [PMID: 8257763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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Blanquer JJ, Rapa M, Melchor A, Jiménez T, Adam A, Mulet MJ. [Traffic accidents: a health problem in primary care]. Aten Primaria 1993; 12:212-4. [PMID: 8374020] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE To discover the prevalence and most relevant epidemiological characteristics of the victims of traffic accidents which occur in our health area. SETTING Hospital Casualty department (HC), Health area 19, Alcoy. PATIENTS This was an observational, crossover study, based on the collection of data from all those patients who had been brought into the HC for attention because of a traffic accident and who were attended between October 1, 1990 and September 31, 1991. MEASUREMENTS AND MAIN RESULTS During the study period a total of 1,111 traffic accident victims were attended. Their average age was 26.62 (SD +/- 15.95), with 69.6% being men and 30.2% women. 60.7% of the victims were attended on non-working days or the eve of a non-working day. 44.5% of those involved in accidents were in four-wheeled vehicles; 40% on two-wheeled vehicles and 11.1% of the victims were pedestrians. Injuries were light in 73.3% of cases; moderate in 15.9% and in the other 8.8% serious, grave or critical. 43.7% of the total had the accident in an urban area and 40.9% on the open road. CONCLUSIONS The high prevalence of victims of accidents (8.3 per 1000 inhabitants) observed in our health area can be explained by the type of study. It is vital to obtain valid information of the real importance of this health problem. The primary care doctor must take preventive action concerning traffic accidents: a) through full studies of traffic accident levels among primary care centre users; b) primary preventive action, through the spreading of information on norms of safety; and c) secondary and tertiary prevention, by means of effective and efficacious outpatient emergency measures, as well as a thorough rehabilitation of accident victims.
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Cantón E, Jiménez T, Pemán J, Ramón MS, Gobernado M. Intraphagocytic bioactivity of lomefloxacin against Pseudomonas aeruginosa. J Antimicrob Chemother 1993; 32:279-84. [PMID: 8226429 DOI: 10.1093/jac/32.2.279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 01/29/2023] Open
Abstract
The kinetics of extracellular bactericidal activity and the intraphagocytic bioactivity of lomefloxacin at concentrations 2 mg/L (1/2 x MIC), 4 mg/L (MIC) and 8 mg/L (2 x MIC) against Pseudomonas aeruginosa were measured, the first in 40% human serum and the second in polymorphonuclear leucocytes (PMNLs), by the colony-counting method. The PMNLs were treated with phenylbutazone to prevent them killing the bacteria during the ingestion period. The kinetics of extracellular killing were biphasic with an initial rapid phase lasting 30 min when lomefloxacin was used at concentrations equal to the MIC and 2 x MIC, during which a decrease of 3 log of cfu/mL occurred. Lomefloxacin showed intraphagocytic activity at the three concentrations assayed. With non-treated PMNLs the percentages of intraphagocytic killing after 30 min of incubation were 93.5, 91.3 and 95.5% with 2, 4 and 8 mg/L, respectively, and 79.8, 65.0 and 93.3% for the same lomefloxacin concentrations with phenylbutazone-treated PMNLs, suggesting a synergic interaction between the antibacterial activity of PMNLs and lomefloxacin.
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Affiliation(s)
- E Cantón
- Unidad de Bacteriología Experimental, Hospital Universitario La Fe, Valencia, Spain
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Abstract
A case of an intramuscular myxoma (IMM) of the thigh simulating a cystic mass is reported. A discussion of the computed tomography (CT) characteristics of benign and malignant soft tissue tumors are presented.
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Affiliation(s)
- T Jiménez
- Department of Radiology, University of Puerto Rico School of Medicine, San Juan
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García-Aguado A, Benito Bartolomé F, Fernández-Ruiz A, García-Guereta L, Jiménez T, Sanz Galeote E, Moreno Granado F. [Percutaneous transluminal angioplasty and valvuloplasty in different congenital cardiopathies: experience in 65 cases]. Rev Esp Cardiol 1988; 41:223-32. [PMID: 3413330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Bolaños B, Bodón Q, Jiménez T, García-Mayol D, Lavergne JA, Díaz AM. Analysis by fluorescence microscopy and flow cytometry of monoclonal antibodies produced against cell surface antigens. P R Health Sci J 1988; 7:35-8. [PMID: 3375422] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The reactivity of seven monoclonal antibodies against the surface antigens of the murine myeloma cell line Sp2/O-Ag 14 was simultaneously analyzed by fluorescence microscopy and flow cytometry. To 1 X 10(6) Sp2/O-Ag 14 cells were added 200 microliters of the monoclonal antibody and the mixture was incubated at 4 degrees C for 30 min. After washing twice with PBS, the Sp2/O-Ag 14 cells were incubated at 4 degrees C for 30 min with a 1:400 dilution of fluoresceinated goat anti-mouse antibodies. Sp2/O-Ag 14 cells were ready for analysis after washing the cells 3 X with PBS. By fluorescence microscopic analysis different patterns of reactivity with monoclonal antibodies were detected. These patterns were identified as: smooth annular, dot-like annular, dot-like patches, diffuse and homogeneous. The observed patterns may represent different cell surface epitopes being recognized by the monoclonal antibodies. Flow cytometry analysis with the EPICS V system showed reactivity of seven monoclonal antibodies with Sp2/O-Ag 14 cell surface epitopes, which ranged from 79 to 90%. Compared to fluorescence microscopy, flow cytometry provides a faster, more sensitive and more accurate quantitative measurement of the reactivity of different monoclonal antibodies against Sp2/O-Ag 14 cell surface antigens.
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Affiliation(s)
- B Bolaños
- Department of Microbiology and Medical Zoology, School of Medicine, University of Puerto Rico, San Juan 00936
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López Sánchez C, Nicoláu J, Fernández Lorite A, Reche O, Ferrer J, Jiménez T. [Multiple congenital fibromatosis]. An Esp Pediatr 1984; 21:616-8. [PMID: 6441493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Jiménez T, Morais J. [Anomalies of Müller's ducts]. Tokoginecol Pract 1965; 24:300-14. [PMID: 5842471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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