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Ragucci S, Landi N, Citores L, Iglesias R, Russo R, Clemente A, Saviano M, Pedone PV, Chambery A, Ferreras JM, Di Maro A. The Biological Action and Structural Characterization of Eryngitin 3 and 4, Ribotoxin-like Proteins from Pleurotus eryngii Fruiting Bodies. Int J Mol Sci 2023; 24:14435. [PMID: 37833883 PMCID: PMC10572553 DOI: 10.3390/ijms241914435] [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: 08/25/2023] [Revised: 09/15/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
Ribotoxin-like proteins (RL-Ps) are specific ribonucleases found in mushrooms that are able to cleave a single phosphodiester bond located in the sarcin-ricin loop (SRL) of the large rRNA. The cleaved SRL interacts differently with some ribosomal proteins (P-stalk). This action blocks protein synthesis because the damaged ribosomes are unable to interact with elongation factors. Here, the amino acid sequences of eryngitin 3 and 4, RL-Ps isolated from Pleurotus eryngii fruiting bodies, were determined to (i) obtain structural information on this specific ribonuclease family from edible mushrooms and (ii) explore the structural determinants which justify their different biological and antipathogenic activities. Indeed, eryngitin 3 exhibited higher toxicity with respect to eryngitin 4 against tumoral cell lines and model fungi. Structurally, eryngitin 3 and 4 consist of 132 amino acids, most of them identical and exhibiting a single free cysteinyl residue. The amino acidic differences between the two toxins are (i) an additional phenylalanyl residue at the N-terminus of eryngitin 3, not retrieved in eryngitin 4, and (ii) an additional arginyl residue at the C-terminus of eryngitin 4, not retrieved in eryngitin 3. The 3D models of eryngitins show slight differences at the N- and C-terminal regions. In particular, the positive electrostatic surface at the C-terminal of eryngitin 4 is due to the additional arginyl residue not retrieved in eryngitin 3. This additional positive charge could interfere with the binding to the SRL (substrate) or with some ribosomal proteins (P-stalk structure) during substrate recognition.
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Affiliation(s)
- Sara Ragucci
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy; (S.R.); (N.L.); (R.R.); (A.C.); (P.V.P.); (A.C.)
| | - Nicola Landi
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy; (S.R.); (N.L.); (R.R.); (A.C.); (P.V.P.); (A.C.)
- Institute of Crystallography, National Research Council, Via Vivaldi 43, 81100 Caserta, Italy;
| | - Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (L.C.); (R.I.); (J.M.F.)
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (L.C.); (R.I.); (J.M.F.)
| | - Rosita Russo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy; (S.R.); (N.L.); (R.R.); (A.C.); (P.V.P.); (A.C.)
| | - Angela Clemente
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy; (S.R.); (N.L.); (R.R.); (A.C.); (P.V.P.); (A.C.)
| | - Michele Saviano
- Institute of Crystallography, National Research Council, Via Vivaldi 43, 81100 Caserta, Italy;
| | - Paolo Vincenzo Pedone
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy; (S.R.); (N.L.); (R.R.); (A.C.); (P.V.P.); (A.C.)
| | - Angela Chambery
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy; (S.R.); (N.L.); (R.R.); (A.C.); (P.V.P.); (A.C.)
| | - José Miguel Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (L.C.); (R.I.); (J.M.F.)
| | - Antimo Di Maro
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy; (S.R.); (N.L.); (R.R.); (A.C.); (P.V.P.); (A.C.)
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Citores L, Ragucci S, Russo R, Gay CC, Chambery A, Di Maro A, Iglesias R, Ferreras JM. Structural and functional characterization of the cytotoxic protein ledodin, an atypical ribosome-inactivating protein from shiitake mushroom (Lentinula edodes). Protein Sci 2023; 32:e4621. [PMID: 36905289 PMCID: PMC10044108 DOI: 10.1002/pro.4621] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/03/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023]
Abstract
We have purified ledodin, a cytotoxic 22-kDa protein from shiitake mushroom (Lentinula edodes) consisting of a 197 amino acid chain. Ledodin possessed N-glycosylase activity on the sarcin-ricin loop of mammalian 28S rRNA and inhibited protein synthesis. However, it was not active against insect, fungal and bacterial ribosomes. In vitro and in silico studies suggested that ledodin exhibits a catalytic mechanism like that of DNA glycosylases and plant ribosome-inactivating proteins. However, the sequence and structure of ledodin was not related to any protein of known function, although ledodin-homologous sequences were found in the genome of several species of fungi, some edible, belonging to different orders of the class Agaricomycetes. Therefore, ledodin could be the first of a new family of enzymes widely distributed among this class of basidiomycetes. The interest of these proteins lies both, in the fact that they can be a toxic agent of some edible mushrooms and in their application in medicine and biotechnology. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011, Valladolid, Spain
| | - Sara Ragucci
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100, Caserta, Italy
| | - Rosita Russo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100, Caserta, Italy
| | - Claudia C Gay
- Laboratory of Protein Research, Institute of Basic and Applied Chemistry of Northeast Argentina (UNNE-CONICET), Faculty of Exact and Natural Sciences and Surveying, Av. Libertad 5470, 3400, Corrientes, Argentina
| | - Angela Chambery
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100, Caserta, Italy
| | - Antimo Di Maro
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100, Caserta, Italy
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011, Valladolid, Spain
| | - José M Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011, Valladolid, Spain
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Iglesias R, Russo R, Landi N, Valletta M, Chambery A, Di Maro A, Bolognesi A, Ferreras JM, Citores L. Structure and Biological Properties of Ribosome-Inactivating Proteins and Lectins from Elder (Sambucus nigra L.) Leaves. Toxins (Basel) 2022; 14:toxins14090611. [PMID: 36136551 PMCID: PMC9503024 DOI: 10.3390/toxins14090611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/24/2022] [Accepted: 08/29/2022] [Indexed: 11/28/2022] Open
Abstract
Ribosome-inactivating proteins (RIPs) are a group of proteins with rRNA N-glycosylase activity that catalyze the removal of a specific adenine located in the sarcin–ricin loop of the large ribosomal RNA, which leads to the irreversible inhibition of protein synthesis and, consequently, cell death. The case of elderberry (Sambucus nigra L.) is unique, since more than 20 RIPs and related lectins have been isolated and characterized from the flowers, seeds, fruits, and bark of this plant. However, these kinds of proteins have never been isolated from elderberry leaves. In this work, we have purified RIPs and lectins from the leaves of this shrub, studying their main physicochemical characteristics, sequences, and biological properties. In elderberry leaves, we found one type 2 RIP and two related lectins that are specific for galactose, four type 2 RIPs that fail to agglutinate erythrocytes, and one type 1 RIP. Several of these proteins are homologous to others found elsewhere in the plant. The diversity of RIPs and lectins in the different elderberry tissues, and the different biological activities of these proteins, which have a high degree of homology with each other, constitute an excellent source of proteins that are of great interest in diagnostics, experimental therapy, and agriculture.
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Affiliation(s)
- Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
| | - Rosita Russo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy
| | - Nicola Landi
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy
| | - Mariangela Valletta
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy
| | - Angela Chambery
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy
| | - Antimo Di Maro
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania ‘Luigi Vanvitelli’, Via Vivaldi 43, 81100 Caserta, Italy
| | - Andrea Bolognesi
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater Studiorum-University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy
| | - José M. Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
- Correspondence: (J.M.F.); (L.C.)
| | - Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
- Correspondence: (J.M.F.); (L.C.)
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Landi N, Ragucci S, Citores L, Clemente A, Hussain HZF, Iglesias R, Ferreras JM, Di Maro A. Isolation, Characterization and Biological Action of Type-1 Ribosome-Inactivating Proteins from Tissues of Salsola soda L. Toxins (Basel) 2022; 14:toxins14080566. [PMID: 36006228 PMCID: PMC9412391 DOI: 10.3390/toxins14080566] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/12/2022] [Accepted: 08/17/2022] [Indexed: 11/20/2022] Open
Abstract
Ribosome-inactivating proteins (RIPs) are known as RNA N-glycosylases. They depurinate the major rRNA, damaging ribosomes and inhibiting protein synthesis. Here, new single-chain (type-1) RIPs named sodins were isolated from the seeds (five proteins), edible leaves (one protein) and roots (one protein) of Salsola soda L. Sodins are able to release Endo's fragment when incubated with rabbit and yeast ribosomes and inhibit protein synthesis in cell-free systems (IC50 = 4.83-79.31 pM). In addition, sodin 5, the major form isolated from seeds, as well as sodin eL and sodin R, isolated from edible leaves and roots, respectively, display polynucleotide:adenosine glycosylase activity and are cytotoxic towards the Hela and COLO 320 cell lines (IC50 = 0.41-1200 nM), inducing apoptosis. The further characterization of sodin 5 reveals that this enzyme shows a secondary structure similar to other type-1 RIPs and a higher melting temperature (Tm = 76.03 ± 0.30 °C) and is non-glycosylated, as other sodins are. Finally, we proved that sodin 5 possesses antifungal activity against Penicillium digitatum.
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Affiliation(s)
- Nicola Landi
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Via Vivaldi 43, 81100 Caserta, Italy
| | - Sara Ragucci
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Via Vivaldi 43, 81100 Caserta, Italy
| | - Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
| | - Angela Clemente
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Via Vivaldi 43, 81100 Caserta, Italy
| | - Hafiza Z. F. Hussain
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Via Vivaldi 43, 81100 Caserta, Italy
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
| | - José M. Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
| | - Antimo Di Maro
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Via Vivaldi 43, 81100 Caserta, Italy
- Correspondence:
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Ballesteros I, Duque A, Negro MJ, Coll C, Latorre-Sánchez M, Hereza J, Iglesias R. Valorisation of cellulosic rejections from wastewater treatment plants through sugar production. J Environ Manage 2022; 312:114931. [PMID: 35338987 DOI: 10.1016/j.jenvman.2022.114931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 03/17/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
The widespread use of wipes and other sanitary products made of nonwoven fibres has led to an enormous problem in wastewater treatment systems that has been underestimated for some time. To date, there are no practical alternatives for recycling and valorisation. In this study, cellulosic rejections recovered from a wastewater treatment plant in Barcelona (Spain) were characterised and treated using hydrothermal and enzymatic methods to obtain free sugars. Steam explosion and autoclave pre-treatments were performed at different temperatures (120, 130, or 150 °C) and residence times (10-40 min) under neutral, acidic or basic conditions. The solids obtained after the pre-treatment, as well as the untreated material, were subjected to enzymatic hydrolysis using commercial enzymes. The untreated substrate reached the highest sugar production: 29 g glucose and xylose per 100 g of the cellulosic rejections, equivalent to 86% of the sugars contained in the initial material. These sugars can subsequently be transformed into biofuels or bioproducts within a biorefinery approach.
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Affiliation(s)
- I Ballesteros
- Advanced Biofuels and Bioproducts Unit, Renewable Energies Department, CIEMAT, Madrid, 28040, Spain
| | - A Duque
- Advanced Biofuels and Bioproducts Unit, Renewable Energies Department, CIEMAT, Madrid, 28040, Spain.
| | - M J Negro
- Advanced Biofuels and Bioproducts Unit, Renewable Energies Department, CIEMAT, Madrid, 28040, Spain
| | - C Coll
- PERSEO Biotechnology SL, Ciudad Darío 13, L´Alcudia, 46250, Spain
| | | | - J Hereza
- Digital Information, Quality and Innovation Service, Waste Prevention and Management Department, AMB, Barcelona, 08041, Spain
| | - R Iglesias
- Advanced Biofuels and Bioproducts Unit, Renewable Energies Department, CIEMAT, Madrid, 28040, Spain
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Citores L, Valletta M, Singh VP, Pedone PV, Iglesias R, Ferreras JM, Chambery A, Russo R. Deciphering Molecular Determinants Underlying Penicillium digitatum's Response to Biological and Chemical Antifungal Agents by Tandem Mass Tag (TMT)-Based High-Resolution LC-MS/MS. Int J Mol Sci 2022; 23:680. [PMID: 35054864 PMCID: PMC8775614 DOI: 10.3390/ijms23020680] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/03/2022] [Accepted: 01/05/2022] [Indexed: 01/27/2023] Open
Abstract
Penicillium digitatum is a widespread pathogen responsible for the postharvest decay of citrus, one of the most economically important crops worldwide. Currently, chemical fungicides are still the main strategy to control the green mould disease caused by the fungus. However, the increasing selection and proliferation of fungicide-resistant strains require more efforts to explore new alternatives acting via new or unexplored mechanisms for postharvest disease management. To date, several non-chemical compounds have been investigated for the control of fungal pathogens. In this scenario, understanding the molecular determinants underlying P. digitatum's response to biological and chemical antifungals may help in the development of safer and more effective non-chemical control methods. In this work, a proteomic approach based on isobaric labelling and a nanoLC tandem mass spectrometry approach was used to investigate molecular changes associated with P. digitatum's response to treatments with α-sarcin and beetin 27 (BE27), two proteins endowed with antifungal activity. The outcomes of treatments with these biological agents were then compared with those triggered by the commonly used chemical fungicide thiabendazole (TBZ). Our results showed that differentially expressed proteins mainly include cell wall-degrading enzymes, proteins involved in stress response, antioxidant and detoxification mechanisms and metabolic processes such as thiamine biosynthesis. Interestingly, specific modulations in response to protein toxins treatments were observed for a subset of proteins. Deciphering the inhibitory mechanisms of biofungicides and chemical compounds, together with understanding their effects on the fungal physiology, will provide a new direction for improving the efficacy of novel antifungal formulations and developing new control strategies.
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Affiliation(s)
- Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (L.C.); (R.I.); (J.M.F.)
| | - Mariangela Valletta
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, 81100 Caserta, Italy; (M.V.); (V.P.S.); (P.V.P.)
| | - Vikram Pratap Singh
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, 81100 Caserta, Italy; (M.V.); (V.P.S.); (P.V.P.)
| | - Paolo Vincenzo Pedone
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, 81100 Caserta, Italy; (M.V.); (V.P.S.); (P.V.P.)
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (L.C.); (R.I.); (J.M.F.)
| | - José Miguel Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (L.C.); (R.I.); (J.M.F.)
| | - Angela Chambery
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, 81100 Caserta, Italy; (M.V.); (V.P.S.); (P.V.P.)
| | - Rosita Russo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, 81100 Caserta, Italy; (M.V.); (V.P.S.); (P.V.P.)
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Maiello S, Iglesias R, Polito L, Citores L, Bortolotti M, Ferreras JM, Bolognesi A. Sequence, Structure, and Binding Site Analysis of Kirkiin in Comparison with Ricin and Other Type 2 RIPs. Toxins (Basel) 2021; 13:toxins13120862. [PMID: 34941700 PMCID: PMC8705660 DOI: 10.3390/toxins13120862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/26/2021] [Accepted: 11/30/2021] [Indexed: 11/29/2022] Open
Abstract
Kirkiin is a new type 2 ribosome-inactivating protein (RIP) purified from the caudex of Adenia kirkii with a cytotoxicity compared to that of stenodactylin. The high toxicity of RIPs from Adenia genus plants makes them interesting tools for biotechnology and therapeutic applications, particularly in cancer therapy. The complete amino acid sequence and 3D structure prediction of kirkiin are here reported. Gene sequence analysis revealed that kirkiin is encoded by a 1572 bp open reading frame, corresponding to 524 amino acid residues, without introns. The amino acid sequence analysis showed a high degree of identity with other Adenia RIPs. The 3D structure of kirkiin preserves the overall folding of type 2 RIPs. The key amino acids of the active site, described for ricin and other RIPs, are also conserved in the kirkiin A chain. Sugar affinity studies and docking experiments revealed that both the 1α and 2γ sites of the kirkiin B chain exhibit binding activity toward lactose and D-galactose, being lower than ricin. The replacement of His246 in the kirkiin 2γ site instead of Tyr248 in ricin causes a different structure arrangement that could explain the lower sugar affinity of kirkiin with respect to ricin.
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Affiliation(s)
- Stefania Maiello
- Department of Experimental, Diagnostic and Specialty Medicine—DIMES, Alma Mater Studiorum—University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy; (S.M.); (M.B.); (A.B.)
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain; (L.C.); (J.M.F.)
- Correspondence: (R.I.); (L.P.)
| | - Letizia Polito
- Department of Experimental, Diagnostic and Specialty Medicine—DIMES, Alma Mater Studiorum—University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy; (S.M.); (M.B.); (A.B.)
- Correspondence: (R.I.); (L.P.)
| | - Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain; (L.C.); (J.M.F.)
| | - Massimo Bortolotti
- Department of Experimental, Diagnostic and Specialty Medicine—DIMES, Alma Mater Studiorum—University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy; (S.M.); (M.B.); (A.B.)
| | - José M. Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain; (L.C.); (J.M.F.)
| | - Andrea Bolognesi
- Department of Experimental, Diagnostic and Specialty Medicine—DIMES, Alma Mater Studiorum—University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy; (S.M.); (M.B.); (A.B.)
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Rivera Ortiz G, Zamora Olivencia D, Iglesias R, Lozada Y. Role of Concurrent Appendectomy in Management of Advanced Endometriosis. J Minim Invasive Gynecol 2021. [DOI: 10.1016/j.jmig.2021.09.434] [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: 10/20/2022]
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Polito L, Bortolotti M, Iglesias R, Bolognesi A. Editorial: Toxic Plant Proteins as Experimental Drugs for Human Pathologies. Front Pharmacol 2021; 12:689924. [PMID: 33995114 PMCID: PMC8113869 DOI: 10.3389/fphar.2021.689924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 04/12/2021] [Indexed: 11/29/2022] Open
Affiliation(s)
- Letizia Polito
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, General Pathology Section, Alma Mater Studiorum-University of Bologna, Bologna, Italy
| | - Massimo Bortolotti
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, General Pathology Section, Alma Mater Studiorum-University of Bologna, Bologna, Italy
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, Valladolid, Spain
| | - Andrea Bolognesi
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, General Pathology Section, Alma Mater Studiorum-University of Bologna, Bologna, Italy
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Iglesias R, Ferreras JM, Llorente A, Citores L. Ebulin l Is Internalized in Cells by Both Clathrin-Dependent and -Independent Mechanisms and Does Not Require Clathrin or Dynamin for Intoxication. Toxins (Basel) 2021; 13:toxins13020102. [PMID: 33573355 PMCID: PMC7911328 DOI: 10.3390/toxins13020102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/12/2021] [Accepted: 01/27/2021] [Indexed: 11/21/2022] Open
Abstract
Ebulin l is an A-B toxin, and despite the presence of a B chain, this toxin displays much less toxicity to cells than the potent A-B toxin ricin. Here, we studied the binding, mechanisms of endocytosis, and intracellular pathway followed by ebulin l and compared it with ricin. COS-1 cells and HeLa cells with inducible synthesis of a mutant dynamin (K44A) were used in this study. The transport of these toxins was measured using radioactively or fluorescently labeled toxins. The data show that ebulin l binds to cells to a lesser extent than ricin. Moreover, the expression of mutant dynamin does not affect the endocytosis, degradation, or toxicity of ebulin l. However, the inhibition of clathrin-coated pit formation by acidification of the cytosol reduced ebulin l endocytosis but not toxicity. Remarkably, unlike ricin, ebulin l is not transported through the Golgi apparatus to intoxicate the cells and ebulin l induces apoptosis as the predominant cell death mechanism. Therefore, after binding to cells, ebulin l is taken up by clathrin-dependent and -independent endocytosis into the endosomal/lysosomal system, but there is no apparent role for clathrin and dynamin in productive intracellular routing leading to intoxication.
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Affiliation(s)
- Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (R.I.); (J.M.F.)
| | - José M. Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (R.I.); (J.M.F.)
| | - Alicia Llorente
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, 0379 Oslo, Norway;
- Department of Mechanical, Electronics and Chemical Engineering Art and Design, Oslo Metropolitan University, 0130 Oslo, Norway
| | - Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (R.I.); (J.M.F.)
- Correspondence:
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Bortolotti M, Maiello S, Ferreras JM, Iglesias R, Polito L, Bolognesi A. Kirkiin: A New Toxic Type 2 Ribosome-Inactivating Protein from the Caudex of Adenia kirkii. Toxins (Basel) 2021; 13:toxins13020081. [PMID: 33499082 PMCID: PMC7912562 DOI: 10.3390/toxins13020081] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 12/19/2022] Open
Abstract
Ribosome-inactivating proteins (RIPs) are plant toxins that irreversibly damage ribosomes and other substrates, thus causing cell death. RIPs are classified in type 1 RIPs, single-chain enzymatic proteins, and type 2 RIPs, consisting of active A chains, similar to type 1 RIPs, linked to lectin B chains, which enable the rapid internalization of the toxin into the cell. For this reason, many type 2 RIPs are very cytotoxic, ricin, volkensin and stenodactylin being the most toxic ones. From the caudex of Adenia kirkii (Mast.) Engl., a new type 2 RIP, named kirkiin, was purified by affinity chromatography on acid-treated Sepharose CL-6B and gel filtration. The lectin, with molecular weight of about 58 kDa, agglutinated erythrocytes and inhibited protein synthesis in a cell-free system at very low concentrations. Moreover, kirkiin was able to depurinate mammalian and yeast ribosomes, but it showed little or no activity on other nucleotide substrates. In neuroblastoma cells, kirkiin inhibited protein synthesis and induced apoptosis at doses in the pM range. The biological characteristics of kirkiin make this protein a potential candidate for several experimental pharmacological applications both alone for local treatments and as component of immunoconjugates for systemic targeting in neurodegenerative studies and cancer therapy.
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Affiliation(s)
- Massimo Bortolotti
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, General Pathology Section, Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy; (M.B.); (S.M.); (A.B.)
| | - Stefania Maiello
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, General Pathology Section, Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy; (M.B.); (S.M.); (A.B.)
| | - José M. Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (J.M.F.); (R.I.)
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (J.M.F.); (R.I.)
| | - Letizia Polito
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, General Pathology Section, Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy; (M.B.); (S.M.); (A.B.)
- Correspondence:
| | - Andrea Bolognesi
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, General Pathology Section, Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy; (M.B.); (S.M.); (A.B.)
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12
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Abstract
Ribosome-inactivating proteins (RIPs) are rRNA N-glycosylases from plants (EC 3.2.2.22) that inactivate ribosomes thus inhibiting protein synthesis. The antiviral properties of RIPs have been investigated for more than four decades. However, interest in these proteins is rising due to the emergence of infectious diseases caused by new viruses and the difficulty in treating viral infections. On the other hand, there is a growing need to control crop diseases without resorting to the use of phytosanitary products which are very harmful to the environment and in this respect, RIPs have been shown as a promising tool that can be used to obtain transgenic plants resistant to viruses. The way in which RIPs exert their antiviral effect continues to be the subject of intense research and several mechanisms of action have been proposed. The purpose of this review is to examine the research studies that deal with this matter, placing special emphasis on the most recent findings.
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Affiliation(s)
| | | | - José M. Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain; (L.C.); (R.I.)
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13
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Iglesias R, Polito L, Bortolotti M, Pedrazzi M, Citores L, Ferreras JM, Bolognesi A. Primary Sequence and 3D Structure Prediction of the Plant Toxin Stenodactylin. Toxins (Basel) 2020; 12:toxins12090538. [PMID: 32825611 PMCID: PMC7551084 DOI: 10.3390/toxins12090538] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/17/2020] [Accepted: 08/19/2020] [Indexed: 01/04/2023] Open
Abstract
Stenodactylin is one of the most potent type 2 ribosome-inactivating proteins (RIPs); its high toxicity has been demonstrated in several models both in vitro and in vivo. Due to its peculiarities, stenodactylin could have several medical and biotechnological applications in neuroscience and cancer treatment. In this work, we report the complete amino acid sequence of stenodactylin and 3D structure prediction. The comparison between the primary sequence of stenodactylin and other RIPs allowed us to identify homologies/differences and the amino acids involved in RIP toxic activity. Stenodactylin RNA was isolated from plant caudex, reverse transcribed through PCR and the cDNA was amplificated and cloned into a plasmid vector and further analyzed by sequencing. Nucleotide sequence analysis showed that stenodactylin A and B chains contain 251 and 258 amino acids, respectively. The key amino acids of the active site described for ricin and most other RIPs are also conserved in the stenodactylin A chain. Stenodactylin amino acid sequence shows a high identity degree with volkensin (81.7% for A chain, 90.3% for B chain), whilst when compared with other type 2 RIPs the identity degree ranges from 27.7 to 33.0% for the A chain and from 42.1 to 47.7% for the B chain.
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Affiliation(s)
- Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E−47011 Valladolid, Spain; (R.I.); (L.C.)
| | - Letizia Polito
- Department of Experimental, Diagnostic and Specialty Medicine—DIMES, General Pathology Section, Alma Mater Studiorum—University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy; (L.P.); (M.B.); (M.P.)
| | - Massimo Bortolotti
- Department of Experimental, Diagnostic and Specialty Medicine—DIMES, General Pathology Section, Alma Mater Studiorum—University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy; (L.P.); (M.B.); (M.P.)
| | - Manuela Pedrazzi
- Department of Experimental, Diagnostic and Specialty Medicine—DIMES, General Pathology Section, Alma Mater Studiorum—University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy; (L.P.); (M.B.); (M.P.)
| | - Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E−47011 Valladolid, Spain; (R.I.); (L.C.)
| | - José M. Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E−47011 Valladolid, Spain; (R.I.); (L.C.)
- Correspondence: (J.M.F.); (A.B.)
| | - Andrea Bolognesi
- Department of Experimental, Diagnostic and Specialty Medicine—DIMES, General Pathology Section, Alma Mater Studiorum—University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy; (L.P.); (M.B.); (M.P.)
- Correspondence: (J.M.F.); (A.B.)
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14
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Ragucci S, Landi N, Russo R, Valletta M, Citores L, Iglesias R, Pedone PV, Pizzo E, Di Maro A. Effect of an additional N-terminal methionyl residue on enzymatic and antifungal activities of Ageritin purified from Agrocybe aegerita fruiting bodies. Int J Biol Macromol 2020; 155:1226-1235. [DOI: 10.1016/j.ijbiomac.2019.11.090] [Citation(s) in RCA: 7] [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: 09/24/2019] [Revised: 10/10/2019] [Accepted: 11/10/2019] [Indexed: 12/17/2022]
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15
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Citores L, Ragucci S, Ferreras JM, Di Maro A, Iglesias R. Ageritin, a Ribotoxin from Poplar Mushroom ( Agrocybe aegerita) with Defensive and Antiproliferative Activities. ACS Chem Biol 2019; 14:1319-1327. [PMID: 31136705 DOI: 10.1021/acschembio.9b00291] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Ribotoxins make up a group of extracellular rRNA endoribonucleases produced by ascomycetes that display cytotoxicity toward animal cells, having been proposed as insecticidal agents. Recently, the ribotoxin Ageritin has been isolated from the basidiomycetes Agrocybe aegerita (poplar mushroom), suggesting that ribotoxins are widely distributed among fungi. To gain insights into the protective properties of Ageritin against pathogens and its putative biotechnological applications, we have tested several biological activities of Ageritin, comparing them with those of the well-known ribotoxin α-sarcin, and we found that Ageritin displayed, in addition to the already reported activities, (i) antibacterial activity against Micrococcus lysodeikticus, (ii) activity against the tobacco mosaic virus RNA, (iii) endonuclease activity against a supercoiled plasmid, (iv) nuclease activity against genomic DNA, (v) cytotoxicity to COLO 320, HeLa, and Raji cells by promoting apoptosis, and (vi) antifungal activity against the green mold Penicillium digitatum. Therefore, Ageritin and α-sarcin can induce resistance not only to insects but also to viruses, bacteria, and fungi. The multiple biological activities of Ageritin could be exploited to improve resistance to different pathogens by engineering transgenic plants. Furthermore, the induction of cell death by different mechanisms turns these ribotoxins into useful tools for cancer therapy.
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Affiliation(s)
- Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E−47011 Valladolid, Spain
| | - Sara Ragucci
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, I-81100 Caserta, Italy
| | - José M. Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E−47011 Valladolid, Spain
| | - Antimo Di Maro
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, I-81100 Caserta, Italy
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E−47011 Valladolid, Spain
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16
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Citores L, Iglesias R, Ragucci S, Di Maro A, Ferreras JM. Antifungal Activity of α-Sarcin against Penicillium digitatum: Proposal of a New Role for Fungal Ribotoxins. ACS Chem Biol 2018; 13:1978-1982. [PMID: 29952541 DOI: 10.1021/acschembio.8b00410] [Citation(s) in RCA: 7] [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: 12/21/2022]
Abstract
Among the putative defense proteins that occur in fungi, one of the best studied is α-sarcin, produced by the mold Aspergillus giganteus. This protein is the most significant member of the ribotoxin family, which consists of extracellular rRNA ribonucleases that display cytotoxic activity toward animal cells. Ribotoxins are rRNA endonucleases that catalyze the hydrolysis of the phosphodiester bond between G4325 and A4326 from the rat 28S rRNA. The results of several experimental approaches have led to propose ribotoxins as insecticidal agents. In this work, we report that α-sarcin displays a strong antifungal activity against Penicillium digitatum, being able to enter into the cytosol where it inactivates the ribosomes, thus killing the cells and arresting the growth of the fungus. This is the first time that a ribotoxin has been found to display antifungal activity. Therefore, this protein could play, besides the already proposed insecticidal function, a role in nature as an antifungal agent.
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Affiliation(s)
- Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
| | - Sara Ragucci
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, I-81100 Caserta, Italy
| | - Antimo Di Maro
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, I-81100 Caserta, Italy
| | - José M. Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
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17
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Sangrós FJ, Torrecilla J, Giráldez-García C, Carrillo L, Mancera J, Mur T, Franch J, Díez J, Goday A, Serrano R, García-Soidán FJ, Cuatrecasas G, Igual D, Moreno A, Millaruelo JM, Carramiñana F, Ruiz MA, Pérez FC, Iriarte Y, Lorenzo Á, González M, Álvarez B, Barutell L, Mayayo MS, del Castillo M, Navarro E, Malo F, Cambra A, López R, Gutiérrez MÁ, Gutiérrez L, Boente C, Mediavilla JJ, Prieto L, Mendo L, Mansilla MJ, Ortega FJ, Borras A, Sánchez LG, Obaya JC, Alonso M, García F, Gutiérrez ÁT, Hernández AM, Suárez D, Álvarez JC, Sáenz I, Martínez FJ, Casorrán A, Ripoll J, Salanova A, Marín MT, Gutiérrez F, Innerárity J, Álvarez MDM, Artola S, Bedoya MJ, Poveda S, Álvarez F, Brito MJ, Iglesias R, Paniagua F, Nogales P, Gómez Á, Rubio JF, Durán MC, Sagredo J, Gijón MT, Rollán MÁ, Pérez PP, Gamarra J, Carbonell F, García-Giralda L, Antón JJ, de la Flor M, Martínez R, Pardo JL, Ruiz A, Plana R, Macía R, Villaró M, Babace C, Torres JL, Blanco C, Jurado Á, Martín JL, Navarro J, Sanz G, Colas R, Cordero B, de Castro C, Ibáñez M, Monzón A, Porta N, Gómez MDC, Llanes R, Rodríguez JJ, Granero E, Sánchez M, Martínez J, Ezkurra P, Ávila L, de la Sen C, Rodríguez A, Buil P, Gabriel P, Roura P, Tarragó E, Mundet X, Bosch R, González JC, Bobé MI, Mata M, Ruiz I, López F, Birules M, Armengol O, de Miguel RM, Romera L, Benito B, Piulats N, Bilbeny B, Cabré JJ, Cos X, Pujol R, Seguí M, Losada C, de Santiago AM, Muñoz P, Regidor E. Asociación de obesidad general y abdominal con hipertensión, dislipemia y presencia de prediabetes en el estudio PREDAPS. Rev Esp Cardiol 2018. [DOI: 10.1016/j.recesp.2017.04.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Sangrós FJ, Torrecilla J, Giráldez-García C, Carrillo L, Mancera J, Mur T, Franch J, Díez J, Goday A, Serrano R, García-Soidán FJ, Cuatrecasas G, Igual D, Moreno A, Millaruelo JM, Carramiñana F, Ruiz MA, Pérez FC, Iriarte Y, Lorenzo Á, González M, Álvarez B, Barutell L, Mayayo MS, Del Castillo M, Navarro E, Malo F, Cambra A, López R, Gutiérrez MÁ, Gutiérrez L, Boente C, Mediavilla JJ, Prieto L, Mendo L, Mansilla MJ, Ortega FJ, Borras A, Sánchez LG, Obaya JC, Alonso M, García F, Gutiérrez ÁT, Hernández AM, Suárez D, Álvarez JC, Sáenz I, Martínez FJ, Casorrán A, Ripoll J, Salanova A, Marín MT, Gutiérrez F, Innerárity J, Álvarez MDM, Artola S, Bedoya MJ, Poveda S, Álvarez F, Brito MJ, Iglesias R, Paniagua F, Nogales P, Gómez Á, Rubio JF, Durán MC, Sagredo J, Gijón MT, Rollán MÁ, Pérez PP, Gamarra J, Carbonell F, García-Giralda L, Antón JJ, de la Flor M, Martínez R, Pardo JL, Ruiz A, Plana R, Macía R, Villaró M, Babace C, Torres JL, Blanco C, Jurado Á, Martín JL, Navarro J, Sanz G, Colas R, Cordero B, de Castro C, Ibáñez M, Monzón A, Porta N, Gómez MDC, Llanes R, Rodríguez JJ, Granero E, Sánchez M, Martínez J, Ezkurra P, Ávila L, de la Sen C, Rodríguez A, Buil P, Gabriel P, Roura P, Tarragó E, Mundet X, Bosch R, González JC, Bobé MI, Mata M, Ruiz I, López F, Birules M, Armengol O, de Miguel RM, Romera L, Benito B, Piulats N, Bilbeny B, Cabré JJ, Cos X, Pujol R, Seguí M, Losada C, de Santiago AM, Muñoz P, Regidor E. Association of General and Abdominal Obesity With Hypertension, Dyslipidemia and Prediabetes in the PREDAPS Study. ACTA ACUST UNITED AC 2017; 71:170-177. [PMID: 28789915 DOI: 10.1016/j.rec.2017.04.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 04/06/2017] [Indexed: 11/30/2022]
Abstract
INTRODUCTION AND OBJECTIVES Some anthropometric measurements show a greater capacity than others to identify the presence of cardiovascular risk factors. This study estimated the magnitude of the association of different anthropometric indicators of obesity with hypertension, dyslipidemia, and prediabetes (altered fasting plasma glucose and/or glycosylated hemoglobin). METHODS Cross-sectional analysis of information collected from 2022 participants in the PREDAPS study (baseline phase). General obesity was defined as body mass index ≥ 30kg/m2 and abdominal obesity was defined with 2 criteria: a) waist circumference (WC) ≥ 102cm in men/WC ≥ 88cm in women, and b) waist-height ratio (WHtR) ≥ 0.55. The magnitude of the association was estimated by logistic regression. RESULTS Hypertension showed the strongest association with general obesity in women (OR, 3.01; 95%CI, 2.24-4.04) and with abdominal obesity based on the WHtR criterion in men (OR, 3.65; 95%CI, 2.66-5.01). Hypertriglyceridemia and low levels of high-density lipoprotein cholesterol showed the strongest association with abdominal obesity based on the WHtR criterion in women (OR, 2.49; 95%CI, 1.68-3.67 and OR, 2.70; 95%CI, 1.89-3.86) and with general obesity in men (OR, 2.06; 95%CI, 1.56-2.73 and OR, 1.68; 95%CI, 1.21-2.33). Prediabetes showed the strongest association with abdominal obesity based on the WHtR criterion in women (OR, 2.48; 95%CI, 1.85-3.33) and with abdominal obesity based on the WC criterion in men (OR, 2.33; 95%CI, 1.75-3.08). CONCLUSIONS Abdominal obesity indicators showed the strongest association with the presence of prediabetes. The association of anthropometric indicators with hypertension and dyslipidemia showed heterogeneous results.
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Affiliation(s)
- F Javier Sangrós
- Atención Primaria, Centro de Salud Torrero-La Paz, Zaragoza, Spain
| | - Jesús Torrecilla
- Atención Primaria, Centro de Salud Bombarda-Monsalud, Zaragoza, Spain
| | - Carolina Giráldez-García
- Servicio de Medicina Preventiva, Hospital Universitario Infanta Elena, Valdemoro, Madrid, Spain; Departamento de Medicina Preventiva, Salud Pública e Historia de la Ciencia, Universidad Complutense de Madrid, Madrid, Spain.
| | - Lourdes Carrillo
- Atención Primaria, Centro de Salud La Victoria de Acentejo, La Victoria de Acentejo, Santa Cruz de Tenerife, Spain
| | - José Mancera
- Atención Primaria, Centro de Salud Ciudad Jardín, Málaga, Spain
| | - Teresa Mur
- Atención Primaria, Centro de Atención Primaria Terrassa Sud, Terrassa, Barcelona, Spain
| | - Josep Franch
- Equipo de Atención Primaria, Centro de Salud Raval Sud, Barcelona, Spain
| | - Javier Díez
- Atención Primaria, Centro de Salud Tafalla, Tafalla, Navarra, Spain
| | - Albert Goday
- Servicio de Endocrinología y Nutrición, Hospital del Mar, Barcelona, Spain
| | - Rosario Serrano
- Atención Primaria, Centro de Salud Martín de Vargas, Madrid, Spain
| | | | | | - Dimas Igual
- Atención Primaria, Centro de Salud Manuel Encinas, Cáceres, Spain
| | - Ana Moreno
- Atención Primaria, Centro de Salud San Roque, Badajoz, Spain
| | | | | | | | | | - Yon Iriarte
- Atención Primaria, Centro de Salud Aizarnazabal-Getaria, Guipúzcua, Spain
| | - Ángela Lorenzo
- Atención Primaria, Centro de Salud Alcalá de Guadaira, Madrid, Spain
| | - María González
- Atención Primaria, Centro de Salud Alcantarilla-Sangonera, Alcantarilla, Murcia, Spain
| | - Beatriz Álvarez
- Atención Primaria, Centro de Salud Andrés Mellado, Madrid, Spain
| | - Lourdes Barutell
- Atención Primaria, Centro de Salud Andrés Mellado, Madrid, Spain
| | - M Soledad Mayayo
- Atención Primaria, Centro de Salud Martín de Vargas, Madrid, Spain
| | | | - Emma Navarro
- Atención Primaria, Centro de Salud Añaza, Añaza, Santa Cruz de Tenerife, Spain
| | - Fernando Malo
- Atención Primaria, Centro de Salud Ares, Ares, A Coruña, Spain
| | - Ainhoa Cambra
- Atención Primaria, Centro de Salud Arrabal, Zaragoza, Spain
| | - Riánsares López
- Atención Primaria, Centro de Salud Artilleros, Madrid, Spain
| | | | - Luisa Gutiérrez
- Atención Primaria, Centro de Salud Errenteria-Beraun, Rentería, Guipúzcoa, Spain
| | - Carmen Boente
- Atención Primaria, Centro de Salud Porriño, Porriño, Pontevedra, Spain
| | | | - Luis Prieto
- Atención Primaria, Centro de Salud Cáceres-La Mejostilla, Cáceres, Spain
| | - Luis Mendo
- Atención Primaria, Centro de Salud Cadreita, Cadreita, Navarra, Spain
| | - M José Mansilla
- Atención Primaria, Centro de Salud Martín de Vargas, Madrid, Spain
| | | | - Antonia Borras
- Atención Primaria, Centro de Salud Canal Salat, Ciutadella, Balearic Islands, Spain
| | - L Gabriel Sánchez
- Atención Primaria, Centro de Salud Carballeda, Mombuey, Zamora, Spain
| | - J Carlos Obaya
- Atención Primaria, Centro de Salud Chopera, Alcobendas, Madrid, Spain
| | - Margarita Alonso
- Atención Primaria, Centro de Salud La Eria, Oviedo, Asturias, Spain
| | - Francisco García
- Atención Primaria, Centro de Salud Don Benito Este, Badajoz, Spain
| | | | - Ana M Hernández
- Atención Primaria, Centro de Salud El Calero, Las Palmas, Spain
| | - Dulce Suárez
- Atención Primaria, Centro de Salud El Calero, Las Palmas, Spain
| | | | - Isabel Sáenz
- Atención Primaria, Centro de Salud Espronceda, Madrid, Spain
| | | | - Ana Casorrán
- Atención Primaria, Centro de Salud Fuente de San Luis, Valencia, Spain
| | - Jazmín Ripoll
- Atención Primaria, Centro de Salud Fuente de San Luis, Valencia, Spain
| | | | - M Teresa Marín
- Atención Primaria, Centro de Salud General Ricardos, Madrid, Spain
| | - Félix Gutiérrez
- Atención Primaria, Centro de Salud Bombarda-Monsalud, Zaragoza, Spain
| | - Jaime Innerárity
- Atención Primaria, Centro de Salud Hereza, Leganés, Madrid, Spain
| | | | - Sara Artola
- Atención Primaria, Centro de Salud Hereza, Leganés, Madrid, Spain
| | - M Jesús Bedoya
- Atención Primaria, Centro de Salud Hereza, Leganés, Madrid, Spain
| | - Santiago Poveda
- Atención Primaria, Centro de Salud Jumilla, Jumilla, Murcia, Spain
| | - Fernando Álvarez
- Atención Primaria, Centro de Salud La Calzada II, Gijón, Asturias, Spain
| | - M Jesús Brito
- Atención Primaria, Centro de Salud La Matanza, Santa Cruz de Tenerife, Spain
| | - Rosario Iglesias
- Atención Primaria, Centro de Salud Pedro Lain Entralgo, Alcorcón, Madrid, Spain
| | | | - Pedro Nogales
- Atención Primaria, Centro de Salud Las Águilas, Madrid, Spain
| | - Ángel Gómez
- Atención Primaria, Centro de Salud Lasarte, Lasarte-Oria, Guipúzcoa, Spain
| | - José Félix Rubio
- Atención Primaria, Centro de Salud Lasarte, Lasarte-Oria, Guipúzcoa, Spain
| | - M Carmen Durán
- Atención Primaria, Centro de Salud Lavadores, Vigo, Pontevedra, Spain
| | - Julio Sagredo
- Atención Primaria, Centro de Salud Los Rosales, Madrid, Spain
| | - M Teresa Gijón
- Atención Primaria, Centro de Salud Los Yébenes, Madrid, Spain
| | | | - Pedro P Pérez
- Atención Primaria, Centro de Salud Mallen, Sevilla, Spain
| | - Javier Gamarra
- Atención Primaria, Centro de Salud Medina del Campo Rural, Medina del Campo, Valladolid, Spain
| | | | | | - J Joaquín Antón
- Atención Primaria, Centro de Salud Murcia Centro, Murcia, Spain
| | - Manuel de la Flor
- Atención Primaria, Centro de Salud Nuestra Señora de Gracia, Carmona, Sevilla, Spain
| | - Rosario Martínez
- Atención Primaria, Centro de Salud Oñati, Oñati, Guipúzcoa, Spain
| | - José Luis Pardo
- Atención Primaria, Centro de Salud Orihuela I, Orihuela, Alicante, Spain
| | - Antonio Ruiz
- Atención Primaria, Centro de Salud Pinto, Pinto, Madrid, Spain
| | - Raquel Plana
- Atención Primaria, Centro de Salud Ponteareas, Ponteareas, Pontevedra, Spain
| | - Ramón Macía
- Atención Primaria, Centro de Salud Roces Montevil, Gijón, Asturias, Spain
| | - Mercè Villaró
- Atención Primaria, Centro de Atención Primaria Terrassa Sud, Terrassa, Barcelona, Spain
| | - Carmen Babace
- Atención Primaria, Centro de Salud Rodríguez Paterna, Logroño, La Rioja, Spain
| | - José Luis Torres
- Atención Primaria, Centro de Salud Rodríguez Paterna, Logroño, La Rioja, Spain
| | | | - Ángeles Jurado
- Atención Primaria, Centro de Salud Salvador Caballero, Granada, Spain
| | - José Luis Martín
- Atención Primaria, Centro de Salud Salvador Caballero, Granada, Spain
| | - Jorge Navarro
- Atención Primaria, Centro de Salud Salvador Pau, Valencia, Spain
| | - Gloria Sanz
- Atención Primaria, Centro de Salud San José Centro, Zaragoza, Spain
| | - Rafael Colas
- Atención Primaria, Centro de Salud Santoña, Santoña, Cantabria, Spain
| | - Blanca Cordero
- Atención Primaria, Centro de Salud Santa María de Benquerencia, Toledo, Spain
| | - Cristina de Castro
- Atención Primaria, Centro de Salud Santa María de Benquerencia, Toledo, Spain
| | | | - Alicia Monzón
- Atención Primaria, Centro de Salud Vecindario, Vecindario, Las Palmas, Spain
| | - Nuria Porta
- Atención Primaria, Centro de Atención Primaria Terrassa Sud, Terrassa, Barcelona, Spain
| | | | - Rafael Llanes
- Atención Primaria, Centro de Salud Villanueva de la Cañada, Villanueva de la Cañada, Madrid, Spain
| | - J José Rodríguez
- Atención Primaria, Centro de Salud Villaviciosa de Odón, Villaviciosa de Odón, Madrid, Spain
| | - Esteban Granero
- Atención Primaria, Centro de Salud Vista Alegre Murcia, Murcia, Spain
| | - Manuel Sánchez
- Atención Primaria, Centro de Salud Vista Alegre Murcia, Murcia, Spain
| | - Juan Martínez
- Atención Primaria, Centro de Salud Yecla, Yecla, Murcia, Spain
| | - Patxi Ezkurra
- Atención Primaria, Centro de Salud Zumaia, Zumaia, Guipúzcoa, Spain
| | - Luis Ávila
- Atención Primaria, Consultorio Almáchar, Almáchar, Málaga, Spain
| | | | - Antonio Rodríguez
- Equipo de Atención Primaria, Centro de Salud Anglès, Anglès, Girona, Spain
| | - Pilar Buil
- Equipo de Atención Primaria, Centro de Salud Azpilagaña, Pamplona, Navarra, Spain
| | - Paula Gabriel
- Equipo de Atención Primaria, Centro de Salud Badia del Vallès, Badia del Vallès, Barcelona, Spain
| | - Pilar Roura
- Equipo de Atención Primaria, Centro de Salud Badia del Vallès, Badia del Vallès, Barcelona, Spain
| | - Eduard Tarragó
- Equipo de Atención Primaria, Centro de Salud Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Xavier Mundet
- Equipo de Atención Primaria, Centro de Salud El Carmel, Barcelona, Spain
| | - Remei Bosch
- Equipo de Atención Primaria, Centro de Salud Girona 2, Girona, Spain
| | - J Carles González
- Equipo de Atención Primaria, Centro de Salud Girona 3, Girona, Spain
| | - M Isabel Bobé
- Equipo de Atención Primaria, Centro de Salud La Mina, Barcelona, Spain
| | - Manel Mata
- Equipo de Atención Primaria, Centro de Salud La Mina, Barcelona, Spain
| | - Irene Ruiz
- Equipo de Atención Primaria, Centro de Salud La Torrassa, Barcelona, Spain
| | - Flora López
- Equipo de Atención Primaria, Centro de Salud Martorell, Martorell, Barcelona, Spain
| | - Marti Birules
- Equipo de Atención Primaria, Centro de Salud Poblenou, Barcelona, Spain
| | - Oriol Armengol
- Equipo de Atención Primaria, Centro de Salud Poblenou, Barcelona, Spain
| | - Rosa Mar de Miguel
- Equipo de Atención Primaria, Centro de Salud Pubillas Casas, Esplugues de Llobregat, Barcelona, Spain
| | - Laura Romera
- Equipo de Atención Primaria, Centro de Salud Raval Nord, Barcelona, Spain
| | - Belén Benito
- Equipo de Atención Primaria, Centro de Salud Raval Sud, Barcelona, Spain
| | - Neus Piulats
- Equipo de Atención Primaria, Centro de Salud Raval Sud, Barcelona, Spain
| | - Beatriz Bilbeny
- Equipo de Atención Primaria, Centro de Salud Raval Sud, Barcelona, Spain
| | - J José Cabré
- Equipo de Atención Primaria, Centro de Salud Reus-1, Reus, Tarragona, Spain
| | - Xavier Cos
- Equipo de Atención Primaria, Centro de Salud Sant Martí de Provençals, Barcelona, Spain
| | - Ramón Pujol
- Equipo de Atención Primaria, Centro de Salud Tremp, Tremp, Lleida, Spain
| | - Mateu Seguí
- Atención Primaria, Unidad Básica de Salud de Es Castell, Es Castell, Balearic Islands, Spain
| | - Carmen Losada
- Unidad de Gestión Clínica, Centro de Salud Adoratrices, Huelva, Spain
| | - A María de Santiago
- Unidad Docente de Atención Familiar y Comunitaria, Servicio de Salud de Castilla-La Mancha, Guadalajara, Spain
| | - Pedro Muñoz
- Unidad Docente de Medicina Familiar y Comunitaria, Gerencia de Atención Primaria, Santander, Cantabria, Spain
| | - Enrique Regidor
- Departamento de Medicina Preventiva, Salud Pública e Historia de la Ciencia, Universidad Complutense de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
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Landi N, Pacifico S, Ragucci S, Iglesias R, Piccolella S, Amici A, Di Giuseppe AM, Di Maro A. Purification, characterization and cytotoxicity assessment of Ageritin: The first ribotoxin from the basidiomycete mushroom Agrocybe aegerita. Biochim Biophys Acta Gen Subj 2017; 1861:1113-1121. [DOI: 10.1016/j.bbagen.2017.02.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/14/2017] [Accepted: 02/16/2017] [Indexed: 01/04/2023]
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Iglesias R, Citores L, Ferreras JM. Ribosomal RNA N-glycosylase Activity Assay of Ribosome-inactivating Proteins. Bio Protoc 2017; 7:e2180. [PMID: 34458490 DOI: 10.21769/bioprotoc.2180] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 09/21/2016] [Revised: 12/20/2016] [Accepted: 02/18/2017] [Indexed: 12/23/2022] Open
Abstract
Ribosome-inactivating proteins (RIPs) are enzymes that irreversibly inactivate ribosomes as a consequence of their N-glycosylase (EC 3.2.2.22) activity. The enzyme cleaves the N-glycosidic bond between the adenine No. 4324 from the 28S rRNA and its ribose in rat ribosomes (or the equivalent adenine in sensitive ribosomes from other organisms). This adenine is located in the α-sarcin-ricin loop (SRL) that is crucial for anchoring the elongation factor (EF) G and EF2 on the ribosome during mRNA-tRNA translocation in prokaryotes and eukaryotes, respectively. RIPs have been isolated mainly from plants and examples of these proteins are ricin or Pokeweed Antiviral Protein (PAP). These proteins, either alone or as a part of immunotoxins, are useful tools for cancer therapy. The following protocol describes a method to detect the RNA fragment released when the RIP-treated apurinic RNA from rabbit reticulocyte lysate is incubated in the presence of acid aniline by electrophoresis on polyacrylamide gels. The fragment released (Endo's fragment) is diagnostic of the action of RIPs.
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Affiliation(s)
- Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, Valladolid, Spain
| | - Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, Valladolid, Spain
| | - José M Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, Valladolid, Spain
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21
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Escalada J, Orozco-Beltran D, Morillas C, Alvarez-Guisasola F, Gomez-Peralta F, Mata-Cases M, Palomares R, Iglesias R, Carratalá-Munuera C. Attitudes towards insulin initiation in type 2 diabetes patients among healthcare providers: A survey research. Diabetes Res Clin Pract 2016; 122:46-53. [PMID: 27810685 DOI: 10.1016/j.diabres.2016.10.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 10/10/2016] [Indexed: 11/22/2022]
Abstract
AIMS To describe the views of healthcare providers about starting insulin in patients with type 2 diabetes and to determine the specific factors that contribute to delay insulin initiation. METHODS Two-phases observational descriptive study. In the quantitative phase we conducted a cross-sectional survey of a sample of 380 healthcare professionals (general practitioners (GPs), endocrinologists, internists and nurses). In the qualitative phase, a discussion group reviewed the results of the survey to propose solutions. RESULTS In poorly controlled patients, 46% of GPs vs. 43.2% of internists and 31.3% of endocrinologists waited 3-6months before starting insulin, and 71.4% of GPs vs. 66.7% of internists vs. 58.8% of endocrinologists need to confirm twice the HbA1c levels. The upper level of basal glucose more frequently considered as good control is 130mg/dL for GPs (35.7%), and 120mg/dL for internists (35.8%) and endocrinologists (37.5%). In patients without comorbidities, 32.5% of endocrinologists vs. 27.2% of internists vs. 17.9% of GPs initiated insulin when HbA1c was >7% while 26.3% of endocrinologists vs. 28.4% of internists vs. 38.4% of GPs initiated insulin when HbA1c was >8%. The interference of the therapy with the patient' social life and the need for time management were the most accepted barriers to initiate insulin. CONCLUSIONS There are significant differences between GPs and endocrinologists regarding the insulin initiation and GPs and internists felt less empowered to manage patients with diabetes. Specific training for professionals and joint work with patients could improve the glycemic control.
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Affiliation(s)
| | | | - Carlos Morillas
- Peset University Hospital, University of Valencia, Valencia, Spain.
| | | | | | - Manel Mata-Cases
- Primary Health Care Centre La Mina - Institut Català de la Salut, Sant Adrià de Besòs, Barcelona, Spain; Institut Universitari d'Investigació en Atenció Primària Jordi Gol, Barcelona, Spain.
| | | | - Rosario Iglesias
- Primary Care Health Centre Pedro Laín Entralgo, Alcorcon, Madrid, Spain.
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Ferreras JM, Ragucci S, Citores L, Iglesias R, Pedone PV, Di Maro A. Insight into the phylogenetic relationship and structural features of vertebrate myoglobin family. Int J Biol Macromol 2016; 93:1041-1050. [PMID: 27659002 DOI: 10.1016/j.ijbiomac.2016.09.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 06/27/2016] [Accepted: 09/18/2016] [Indexed: 11/17/2022]
Abstract
Myoglobin (Mb) is studied to clarify the structure-function relationships in protein science. In this work, we report the results of a comparative analysis of amino acid sequences from 298 vertebrate Mbs. Forty-one high conserved residues were identified and seven of them were invariants [E18, G25, F43, V68, L72, H93 (proximal histidine) and H97]. E18 is the only invariant amino acid residue located out of the heme-pocket and Xe-cavities playing a role in interaction between the A and E-helices. A comparative analysis of several parameters related to amino acid composition shows an increase of average mass, accessible surface area and volume per residue from Actinopterygii to Mammalia and Aves. This may be due to an increased number of bulky residues reducing the non-specific cavities volume and thus improving the oxygen flow between the heme site and the outside of the protein. Finally, the phylogenetic analyses of Mb in vertebrates are consistent with an evolution that runs with the diversification of the species, but in which several episodes of gene duplication and lost have occurred, less frequently in the ancestors of great taxons, cartilaginous fishes and non-avian reptiles, most frequently in ray-finned fishes and mammals, and very frequently in birds.
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Affiliation(s)
- José M Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
| | - Sara Ragucci
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Second University of Naples, I-81100 Caserta, Italy
| | - Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47011 Valladolid, Spain
| | - Paolo V Pedone
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Second University of Naples, I-81100 Caserta, Italy
| | - Antimo Di Maro
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Second University of Naples, I-81100 Caserta, Italy.
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Alvarez F, Iglesias R, Bos J, Tojo J, Sanmartin ML. New findings on the helminth fauna of the common european genet (Genetta genettaL.): first record ofToxocara genettaeWarren, 1972 (Ascarididae) in Europe. ACTA ACUST UNITED AC 2016. [DOI: 10.1051/parasite/1990655244] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Citores L, Iglesias R, Gay C, Ferreras JM. Antifungal activity of the ribosome-inactivating protein BE27 from sugar beet (Beta vulgaris L.) against the green mould Penicillium digitatum. Mol Plant Pathol 2016; 17:261-271. [PMID: 25976013 PMCID: PMC6638414 DOI: 10.1111/mpp.12278] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The ribosome-inactivating protein BE27 from sugar beet (Beta vulgaris L.) leaves is an apoplastic protein induced by signalling compounds, such as hydrogen peroxide and salicylic acid, which has been reported to be involved in defence against viruses. Here, we report that, at a concentration much lower than that present in the apoplast, BE27 displays antifungal activity against the green mould Penicillium digitatum, a necrotrophic fungus that colonizes wounds and grows in the inter- and intracellular spaces of the tissues of several edible plants. BE27 is able to enter into the cytosol and kill fungal cells, thus arresting the growth of the fungus. The mechanism of action seems to involve ribosomal RNA (rRNA) N-glycosylase activity on the sarcin-ricin loop of the major rRNA which inactivates irreversibly the fungal ribosomes, thus inhibiting protein synthesis. We compared the C-terminus of the BE27 structure with antifungal plant defensins and hypothesize that a structural motif composed of an α-helix and a β-hairpin, similar to the γ-core motif of defensins, might contribute to the specific interaction with the fungal plasma membranes, allowing the protein to enter into the cell.
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Affiliation(s)
- Lucía Citores
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, 47011, Valladolid, Spain
| | - Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, 47011, Valladolid, Spain
| | - Carolina Gay
- Laboratory of Research on Proteins, Faculty of Exact and Natural Sciences and Surveying, National University of the Northeast (UNNE), 3400, Corrientes, Argentina
| | - José Miguel Ferreras
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, 47011, Valladolid, Spain
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Segade P, García N, García Estévez JM, Arias C, Iglesias R. Encystment/excystment response and serotypic variation in the gastropod parasite Tetrahymena rostrata (Ciliophora, Tetrahymenidae). Parasitol Res 2015; 115:771-7. [PMID: 26499199 DOI: 10.1007/s00436-015-4802-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 10/19/2015] [Indexed: 11/26/2022]
Abstract
Tetrahymena rostrata, which is characterized by a particular encystment-excystment cycle involving autogamy, has been recently found infecting the kidney of edible Helix aspersa snails under farming conditions. In this work, the effects of several factors on its encystment/excystment behaviour and the occurrence of different serotypes were investigated. The encystment/excystment response under starvation conditions was seriously affected by temperature. While a peak of encystment at 48 h followed by a progressive spontaneous excystment was observed at 18 and 25 °C, the encystment response was practically inhibited at 5 °C and clearly slowed down at 10 °C. At 30 °C, most of surviving ciliates remained encysted throughout the experiment, with spontaneous excystment being detected only after switching the temperature to 18 °C. Soil components also affected the encystment/excystment behaviour at 18 °C, with spontaneous excystment occurring in the presence of a sterile-filtered soil extract or mineral water but being strongly minimized with a non-filtered soil extract. Resting cysts formed in the latter extract exhibited a 3–4 times thicker and ultrastructurally more complex wall than that formed in mineral water and retained the excystment ability for about 4 weeks. Incomplete desiccation did not affect significantly the encystment response, while the mucus and kidney extracts from snails as well as a ciliate extract strongly stimulated a rapid excystment. Finally, two different serotypes infecting H. aspersa in heliciculture farms of Galicia (NW Spain) were identified, but no differences were observed between the encystment/excystment responses exhibited by two isolates belonging to each serotype.
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Iglesias R, Citores L, Di Maro A, Ferreras JM. Biological activities of the antiviral protein BE27 from sugar beet (Beta vulgaris L.). Planta 2015; 241:421-433. [PMID: 25326773 DOI: 10.1007/s00425-014-2191-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 10/12/2014] [Indexed: 06/04/2023]
Abstract
The ribosome inactivating protein BE27 displays several biological activities in vitro that could result in a broad action against several types of pathogens. Beetin 27 (BE27), a ribosome-inactivating protein (RIP) from sugar beet (Beta vulgaris L.) leaves, is an antiviral protein induced by virus and signaling compounds such as hydrogen peroxide and salicylic acid. Its role as a defense protein has been attributed to its RNA polynucleotide:adenosine glycosidase activity. Here we tested other putative activities of BE27 that could have a defensive role against pathogens finding that BE27 displays rRNA N-glycosidase activity against yeast and Agrobacterium tumefaciens ribosomes, DNA polynucleotide:adenosine glycosidase activity against herring sperm DNA, and magnesium-dependent endonuclease activity against the supercoiled plasmid PUC19 (nicking activity). The nicking activity could be a consequence of an unusual conformation of the BE27 active site, similar to that of PD-L1, a RIP from Phytolacca dioica L. leaves. Additionally, BE27 possesses superoxide dismutase activity, thus being able to produce the signal compound hydrogen peroxide. BE27 is also toxic to COLO 320 cells, inducing apoptosis in these cells by either activating the caspase pathways and/or inhibiting protein synthesis. The combined effect of these biological activities could result in a broad action against several types of pathogens such as virus, bacteria, fungi or insects.
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Affiliation(s)
- Rosario Iglesias
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, 47011, Valladolid, Spain
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Santos-Saavedra D, Pardo XM, Iglesias R, Canedo-Rodríguez A, Álvarez-Santos V. Scene Recognition Invariant to Symmetrical Reflections and Illumination Conditions in Robotics. Pattern Recognition and Image Analysis 2015. [DOI: 10.1007/978-3-319-19390-8_15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Castells A, Quintero E, Álvarez C, Bujanda L, Cubiella J, Salas D, Lanas A, Carballo F, Morillas JD, Hernández C, Jover R, Hijona E, Portillo I, Enríquez-Navascués JM, Hernández V, Martínez-Turnes A, Menéndez-Villalva C, González-Mao C, Sala T, Ponce M, Andrés M, Teruel G, Peris A, Sopeña F, González-Rubio F, Seoane-Urgorri A, Grau J, Serradesanferm A, Pozo À, Pellisé M, Balaguer F, Ono A, Cruzado J, Pérez-Riquelme F, Alonso-Abreu I, Carrillo-Palau M, de la Vega-Prieto M, Iglesias R, Amador J, Blanco JM, Sastre R, Ferrándiz J, González-Hernández MJ, Andreu M, Bessa X. Rate of detection of advanced neoplasms in proximal colon by simulated sigmoidoscopy vs fecal immunochemical tests. Clin Gastroenterol Hepatol 2014; 12:1708-16.e4. [PMID: 24681078 DOI: 10.1016/j.cgh.2014.03.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 03/06/2014] [Accepted: 03/07/2014] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS We compared the ability of biennial fecal immunochemical testing (FIT) and one-time sigmoidoscopy to detect colon side-specific advanced neoplasms in a population-based, multicenter, nationwide, randomized controlled trial. METHODS We identified asymptomatic men and women, 50-69 years old, through community health registries and randomly assigned them to groups that received a single colonoscopy examination or biennial FIT. Sigmoidoscopy yield was simulated from results obtained from the colonoscopy group, according to the criteria proposed in the UK Flexible Sigmoidoscopy Trial for colonoscopy referral. Patients who underwent FIT and were found to have ≥75 ng hemoglobin/mL were referred for colonoscopy. Data were analyzed from 5059 subjects in the colonoscopy group and 10,507 in the FIT group. The main outcome was rate of detection of any advanced neoplasm proximal to the splenic flexure. RESULTS Advanced neoplasms were detected in 317 subjects (6.3%) in the sigmoidoscopy simulation group compared with 288 (2.7%) in the FIT group (odds ratio for sigmoidoscopy, 2.29; 95% confidence interval, 1.93-2.70; P = .0001). Sigmoidoscopy also detected advanced distal neoplasia in a higher percentage of patients than FIT (odds ratio, 2.61; 95% confidence interval, 2.20-3.10; P = .0001). The methods did not differ significantly in identifying patients with advanced proximal neoplasms (odds ratio, 1.17; 95% confidence interval, 0.78-1.76; P = .44). This was probably due to the lower performance of both strategies in detecting patients with proximal lesions (sigmoidoscopy detected these in 19.1% of patients and FIT in 14.9% of patients) vs distal ones (sigmoidoscopy detected these in 86.8% of patients and FIT in 33.5% of patients). Sigmoidoscopy, but not FIT, detected proximal lesions in lower percentages of women (especially those 50-59 years old) than men. CONCLUSIONS Sigmoidoscopy and FIT have similar limitations in detecting advanced proximal neoplasms, which depend on patients' characteristics; sigmoidoscopy underperforms for women 50-59 years old. Screening strategies should be designed on the basis of target population to increase effectiveness and cost-effectiveness. ClinicalTrials.gov number: NCT00906997.
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Affiliation(s)
- Antoni Castells
- Department of Gastroenterology, Hospital Clínic, Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), IDIBAPS, University of Barcelona, Barcelona, Catalonia.
| | - Enrique Quintero
- Department of Gastroenterology, Hospital Universitario de Canarias, Universidad de La Laguna, Tenerife.
| | - Cristina Álvarez
- Department of Gastroenterology, Hospital del Mar, IMIM (Hospital del Mar Medical Research Institute), Pompeu Fabra University, Barcelona, Catalonia
| | - Luis Bujanda
- Department of Gastroenterology, Donostia Hospital-Instituto Biodonostia, CIBERehd, University of Basque Country (UPV/EHU), San Sebastián
| | - Joaquín Cubiella
- Department of Gastroenterology, Complexo Hospitalario Universitario de Ourense, Ourense
| | - Dolores Salas
- Colorectal Cancer Screening Program, Dirección General de Salud Pública, Conselleria de Sanitat, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region FISABIO, Valencia
| | - Angel Lanas
- Servicio de Aparato Digestivo, Hospital Clínico Universitario, IIS Aragón, University of Zaragoza, CIBERehd, Zaragoza
| | - Fernando Carballo
- Unidad de Gestión Clínica de Digestivo, Hospital Universitario Virgen de la Arrixaca, Instituto Murciano de Investigación Biosanitaria, Universidad de Murcia, Murcia
| | | | - Cristina Hernández
- Department of Epidemiology and Evaluation, Parc de Salut Mar, IMIM, Barcelona, Catalonia
| | - Rodrigo Jover
- Gastroenterology Unit, Hospital General Universitario de Alicante, Alicante
| | - Elizabeth Hijona
- Department of Gastroenterology, Donostia Hospital-Instituto Biodonostia, CIBERehd, University of Basque Country (UPV/EHU), San Sebastián
| | - Isabel Portillo
- Centro Coordinador del Programa de Cribado de Cáncer Colorrectal, Organización Central de Osakidetza-Servicio Vasco de Salud, Bilbao
| | - José M Enríquez-Navascués
- Centro Coordinador del Programa de Cribado de Cáncer Colorrectal, Organización Central de Osakidetza-Servicio Vasco de Salud, Bilbao; Department of Surgery, Hospital Donostia-Instituto Biodonostia, University of Basque Country (UPV/EHU), San Sebastián
| | - Vicent Hernández
- Department of Gastroenterology, Complexo Hospitalario Universitario de Vigo, Vigo
| | | | | | - Carmen González-Mao
- Department of Clinical Analysis, Complexo Hospitalario Universitario de Vigo, Vigo
| | - Teresa Sala
- Colorectal Cancer Screening Program, Dirección General de Salud Pública, Conselleria de Sanitat, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region FISABIO, Valencia
| | - Marta Ponce
- Department of Gastroenterology, Hospital Universitario La Fe, Valencia
| | - Mercedes Andrés
- Colorectal Cancer Screening Program, Dirección General de Salud Pública, Conselleria de Sanitat, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region FISABIO, Valencia
| | - Gloria Teruel
- Colorectal Cancer Screening Program, Dirección General de Salud Pública, Conselleria de Sanitat, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region FISABIO, Valencia
| | - Antonio Peris
- Department of Gastroenterology, Consorcio Hospitalario de Castellón, Castellón
| | - Federico Sopeña
- Servicio de Aparato Digestivo, Hospital Clínico Universitario, IIS Aragón, University of Zaragoza, CIBERehd, Zaragoza
| | - Francisca González-Rubio
- Servicio de Aparato Digestivo, Hospital Clínico Universitario, IIS Aragón, University of Zaragoza, CIBERehd, Zaragoza
| | - Agustín Seoane-Urgorri
- Department of Gastroenterology, Hospital del Mar, IMIM (Hospital del Mar Medical Research Institute), Pompeu Fabra University, Barcelona, Catalonia
| | - Jaume Grau
- Unitat d'Avaluació, Suport i Preventiva, Hospital Clínic, Barcelona, Catalonia
| | - Anna Serradesanferm
- Unitat d'Avaluació, Suport i Preventiva, Hospital Clínic, Barcelona, Catalonia
| | - Àngels Pozo
- Unitat d'Avaluació, Suport i Preventiva, Hospital Clínic, Barcelona, Catalonia
| | - Maria Pellisé
- Department of Gastroenterology, Hospital Clínic, Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), IDIBAPS, University of Barcelona, Barcelona, Catalonia
| | - Francesc Balaguer
- Department of Gastroenterology, Hospital Clínic, Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), IDIBAPS, University of Barcelona, Barcelona, Catalonia
| | - Akiko Ono
- Unidad de Gestión Clínica de Digestivo, Hospital Universitario Virgen de la Arrixaca, Instituto Murciano de Investigación Biosanitaria, Murcia
| | - José Cruzado
- Colorectal Cancer Prevention Program of the Región de Murcia, Instituto Murciano de Investigación Biosanitaria, Servicio Murciano de Salud, Murcia
| | - Francisco Pérez-Riquelme
- Colorectal Cancer Prevention Program of the Región de Murcia, Instituto Murciano de Investigación Biosanitaria, Dirección General de Salud Pública, Consejería de Sanidad y Política Social, Murcia
| | - Inmaculada Alonso-Abreu
- Department of Gastroenterology, Hospital Universitario de Canarias, Universidad de La Laguna, Tenerife
| | - Marta Carrillo-Palau
- Department of Gastroenterology, Hospital Universitario de Canarias, Universidad de La Laguna, Tenerife
| | | | | | | | | | | | - Juan Ferrándiz
- Subdirección de Calidad, Dirección General Atención al Paciente, SERMAS, Madrid
| | | | - Montserrat Andreu
- Department of Gastroenterology, Hospital del Mar, IMIM (Hospital del Mar Medical Research Institute), Pompeu Fabra University, Barcelona, Catalonia
| | - Xavier Bessa
- Department of Gastroenterology, Hospital del Mar, IMIM (Hospital del Mar Medical Research Institute), Pompeu Fabra University, Barcelona, Catalonia
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Di Maro A, Citores L, Russo R, Iglesias R, Ferreras JM. Sequence comparison and phylogenetic analysis by the Maximum Likelihood method of ribosome-inactivating proteins from angiosperms. Plant Mol Biol 2014; 85:575-88. [PMID: 24880476 DOI: 10.1007/s11103-014-0204-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 05/16/2014] [Indexed: 05/16/2023]
Abstract
Ribosome-inactivating proteins (RIPs) from angiosperms are rRNA N-glycosidases that have been proposed as defence proteins against virus and fungi. They have been classified as type 1 RIPs, consisting of single-chain proteins, and type 2 RIPs, consisting of an A chain with RIP properties covalently linked to a B chain with lectin properties. In this work we have carried out a broad search of RIP sequence data banks from angiosperms in order to study their main structural characteristics and phylogenetic evolution. The comparison of the sequences revealed the presence, outside of the active site, of a novel structure that might be involved in the internal protein dynamics linked to enzyme catalysis. Also the B-chains presented another conserved structure that might function either supporting the beta-trefoil structure or in the communication between both sugar-binding sites. A systematic phylogenetic analysis of RIP sequences revealed that the most primitive type 1 RIPs were similar to that of the actual monocots (Poaceae and Asparagaceae). The primitive RIPs evolved to the dicot type 1 related RIPs (like those from Caryophyllales, Lamiales and Euphorbiales). The gene of a type 1 RIP related with the actual Euphorbiaceae type 1 RIPs fused with a double beta trefoil lectin gene similar to the actual Cucurbitaceae lectins to generate the type 2 RIPs and finally this gene underwent deletions rendering either type 1 RIPs (like those from Cucurbitaceae, Rosaceae and Iridaceae) or lectins without A chain (like those from Adoxaceae).
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Affiliation(s)
- Antimo Di Maro
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Second University of Naples, 81100, Caserta, Italy
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Riva J, Iglesias R, Yudi L. Electrochemical adsorption of a cationic cellulosic polymer by ion pair formation at the interface between two immiscible electrolyte solutions. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ruiz-Clavijo D, Arín A, Vila J, Albéniz E, Iglesias R, Casi M. Hepatotoxicidad inducida por azatioprina en paciente con enfermedad de Crohn. An Sist Sanit Navar 2013; 36:353-6. [DOI: 10.4321/s1137-66272013000200022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 01/25/2013] [Accepted: 01/25/2013] [Indexed: 11/11/2022]
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Castells A, Bessa X, Quintero E, Bujanda L, Cubiella J, Salas D, Lanas Á, Carballo F, Morillas JD, Hernández C, Jover R, Montalvo I, Arenas J, Cosme Á, Hernández V, Iglesias B, Castro I, Cid L, Sala T, Ponce M, Andrés M, Teruel G, Peris A, Roncales MP, González-Rubio F, Seoane-Urgorri A, Grau J, Serradesanferm A, Pellisé M, Ono A, Cruzado J, Pérez-Riquelme F, Alonso-Abreu I, Carrillo-Palau M, de la Vega-Prieto M, Iglesias R, Amador J, Blanco JM, Sastre R, Ferrándiz J, González-Hernández MJ, Andreu M. Risk of Advanced Proximal Neoplasms According to Distal Colorectal Findings: Comparison of Sigmoidoscopy-Based Strategies. J Natl Cancer Inst 2013; 105:878-886. [DOI: 10.1093/jnci/djt117] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Planavila A, Redondo I, Hondares E, Vinciguerra M, Munts C, Iglesias R, Gabrielli LA, Sitges M, Giralt M, van Bilsen M, Villarroya F. Fibroblast growth factor 21 protects against cardiac hypertrophy in mice. Nat Commun 2013; 4:2019. [DOI: 10.1038/ncomms3019] [Citation(s) in RCA: 241] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 05/17/2013] [Indexed: 12/13/2022] Open
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Planavila A, Dominguez E, Navarro M, Vinciguerra M, Iglesias R, Giralt M, Lope-Piedrafita S, Ruberte J, Villarroya F. Dilated cardiomyopathy and mitochondrial dysfunction in Sirt1-deficient mice: a role for Sirt1-Mef2 in adult heart. J Mol Cell Cardiol 2013; 53:521-31. [PMID: 22986367 DOI: 10.1016/j.yjmcc.2012.07.019] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 07/17/2012] [Accepted: 07/25/2012] [Indexed: 10/28/2022]
Abstract
The deacetylase Sirtuin-1 (Sirt1) is involved in the cardiac hypertrophic responses and cardiac embryo morphogenesis. However, the physiological function of Sirt1 deficiency in the postnatal development of the heart remains to be characterized. The aim of the study was to investigate the relevance of Sirt1 in the development and function of the myocardium. Hearts from Sirt1-deficient mice partially or totally lacking Sirt1 protein activity were analyzed. Loss of Sirt1 activity led to dilated cardiomyopathy in adult hearts, a phenotype accompanied by reduced cardiomyocyte size and the absence of fibrosis. Morphological and functional mitochondrial abnormalities were observed in the adult hearts lacking Sirt1, suggesting that mitochondrial dysfunction contributes to the progression of the observed cardiomyopathy. Moreover, gene expression analyses revealed that mitochondrial genes were the most affected in Sirt1-deficient mice, showing a reduction in their expression. No overt cardiac dilatation was observed in neonates lacking Sirt1 activity, but first signs of mitochondrial alterations were already present. Immunoblot analyses revealed that Sirt1 is highly expressed in the heart after birth, indicating the importance of Sirt1 in the neonatal period. Finally, Sirt1 deficiency affected the acetylation pattern of the myocyte enhancer factor 2 (Mef2) transcription factors, which are critical for normal heart development and mitochondrial integrity. Collectively, our findings indicate that Sirt1 is essential for the maintenance of cardiac mitochondrial integrity and normal postnatal myocardium development.
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Affiliation(s)
- A Planavila
- Departament de Bioquímica i Biologia Molecular, Institut de Biomedicina de la Universitat de Barcelona, Universitat de Barcelona and CIBER Fisiopatología de la Obesidad y Nutrición, 08028 Barcelona, Spain.
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Ferreras JM, Citores L, Iglesias R, Jiménez P, Souza AM, Gayoso MJ, Girbés T. Occurrence and new procedure of preparation of nigrin, an antiribosomal lectin present in elderberry bark. Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.06.004] [Citation(s) in RCA: 12] [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] [Indexed: 11/16/2022]
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Ferreras JM, Citores L, Iglesias R, Jiménez P, Girbés T. Use of ribosome-inactivating proteins from Sambucus for the construction of immunotoxins and conjugates for cancer therapy. Toxins (Basel) 2011; 3:420-41. [PMID: 22069717 PMCID: PMC3202832 DOI: 10.3390/toxins3050420] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Revised: 04/02/2011] [Accepted: 04/25/2011] [Indexed: 01/28/2023] Open
Abstract
The type 2 ribosome-inactivating proteins (RIPs) isolated from some species belonging to the Sambucus genus, have the characteristic that although being even more active than ricin inhibiting protein synthesis in cell-free extracts, they lack the high toxicity of ricin and related type 2 RIPs to intact cells and animals. This is due to the fact that after internalization, they follow a different intracellular pathway that does not allow them to reach the cytosolic ribosomes. The lack of toxicity of type 2 RIPs from Sambucus make them good candidates as toxic moieties in the construction of immunotoxins and conjugates directed against specific targets. Up to now they have been conjugated with either transferrin or anti-CD105 to target either transferrin receptor- or endoglin-overexpressing cells, respectively.
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Affiliation(s)
- José M. Ferreras
- Department of Biochemistry, Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47005 Valladolid, Spain; (L.C.); (R.I.)
| | - Lucía Citores
- Department of Biochemistry, Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47005 Valladolid, Spain; (L.C.); (R.I.)
| | - Rosario Iglesias
- Department of Biochemistry, Molecular Biology and Physiology, Faculty of Sciences, University of Valladolid, E-47005 Valladolid, Spain; (L.C.); (R.I.)
| | - Pilar Jiménez
- Nutrition and Bromatology, Faculty of Medicine, E-47005 Valladolid, Spain; (P.J.); (T.G.)
| | - Tomás Girbés
- Nutrition and Bromatology, Faculty of Medicine, E-47005 Valladolid, Spain; (P.J.); (T.G.)
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Planavila A, Iglesias R, Giralt M, Villarroya F. Sirt1 acts in association with PPAR to protect the heart from hypertrophy, metabolic dysregulation, and inflammation. Cardiovasc Res 2010; 90:276-84. [DOI: 10.1093/cvr/cvq376] [Citation(s) in RCA: 216] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Segade P, Crespo C, García N, García-Estévez JM, Arias C, Iglesias R. Brachylaima aspersae n. sp. (Digenea: Brachylaimidae) infecting farmed snails in NW Spain: morphology, life cycle, pathology, and implications for heliciculture. Vet Parasitol 2010; 175:273-86. [PMID: 21075524 DOI: 10.1016/j.vetpar.2010.10.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Revised: 10/11/2010] [Accepted: 10/12/2010] [Indexed: 10/18/2022]
Abstract
The life cycle of Brachylaima aspersae n. sp. (Trematoda: Brachylaimidae) in heliciculture farms is elucidated in light of field and experimental studies. Embryonated asymmetrical eggs (33.3 μm × 20.2 μm) are passed in the faeces of the definitive host, the domestic mouse (Mus musculus), and are ingested by its unique first intermediate host, the helicid snail Helix aspersa aspersa. After hatching, the miracidium develops into a highly branched sporocyst in the connective tissues of the digestive gland. Microcaudate cercariae emerging from this gastropod migrate up the ureter of the second intermediate host, the snails H. a. aspersa and H. a. maxima, and develop into non-encysted metacercariae in the kidney. Following predation of infected snails, the metacercariae develop into adults preferentially in the proximal portion of the duodenum of the definitive host. The strict oioxenic character for the first intermediate host, as well as the cercarial chaetotaxy (3 C(I)V+1 C(I)D, 10 C(II), 5 C(III)V, 14 C(III)L, 2 C(III)D, 16 H, 6 S(I), 6 S(II), 6 S(III), 2 A(I)L+1 A(I)V, 1 A(II)L, 3 ML, 1 P(I)L and 3 P(III)L), the distinct pars prostatica, the variable appearance of testes (rounded to irregular, with smooth or slightly to moderately lobulated margins), the size of eggs, the position of acetabulum (located somewhat posterior to the anterior third of body), and the microhabitat of the adult in the final host allow differentiation of B. aspersae from other well-known species in the genus. Massive infections with sporocysts or metacercariae of this brachylaimid may induce extensive pathological changes in the organs affected. Our results confirm that control of rodents in heliciculture farms is essential to minimize the potential health risks and morbimortality associated with this newly described species.
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Affiliation(s)
- P Segade
- Laboratorio de Parasitología, Facultad de Biología, Edificio de Ciencias Experimentales, Campus de Lagoas-Marcosende s/n, Universidad de Vigo, 36310 Vigo, Spain
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Iglesias R, Ferreras JM, Arias FJ, Muñoz R, Girbés T. Effect of continued exposition to ethanol on activity of the ammonium and fructose transport systems in Saccharomyces cerevisiae var. ellipsoideus. Biotechnol Bioeng 2010; 37:389-91. [PMID: 18597383 DOI: 10.1002/bit.260370415] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Ethanol and cycloheximide inhibited the function of the ammonium transport system in growing cultures of Saccharomyces cerevisiae var. ellipsoideus measured as methylamine uptake. The effect was reversible with ethanol and irreversible with the antibiotic. The kinetic data are consistent with a reduction of the number of active carrier molecules located in the plasma membrane. In contrast, neither ethanol nor cycloheximide affected the specific rate of fructose uptake.
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Affiliation(s)
- R Iglesias
- Departamento de Bioquimica, Biología Molecular y Fisiología, Facultad de Ciencias, Universidad de Valladolid, Valládolid, Spain
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Iglesias R, Citores L, Ferreras JM, Pérez Y, Jiménez P, Gayoso MJ, Olsnes S, Tamburino R, Di Maro A, Parente A, Girbés T. Sialic acid-binding dwarf elder four-chain lectin displays nucleic acid N-glycosidase activity. Biochimie 2010; 92:71-80. [DOI: 10.1016/j.biochi.2009.09.011] [Citation(s) in RCA: 12] [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: 06/19/2009] [Accepted: 09/22/2009] [Indexed: 11/27/2022]
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Girbes T, Citores L, Miguel Ferreras J, Iglesias R. Killing cancer cells by targeting the EGF receptor. Cancer Biol Ther 2008; 7:243-4. [PMID: 18623902 DOI: 10.4161/cbt.7.2.5794] [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: 11/19/2022] Open
Affiliation(s)
- Tomas Girbes
- Nutricion y Bromatologia, Dpt. Pediatria, Facultad de Medicina, Universidad de Valladolid, 47005 Valladolid, Spain.
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Iglesias R, Locovei S, Roque A, Alberto AP, Dahl G, Spray DC, Scemes E. P2X7 receptor-Pannexin1 complex: pharmacology and signaling. Am J Physiol Cell Physiol 2008; 295:C752-60. [PMID: 18596211 DOI: 10.1152/ajpcell.00228.2008] [Citation(s) in RCA: 277] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Pannexin 1 (Panx1), an ortholog to invertebrate innexin gap junctions, has recently been proposed to be the pore induced by P2X(7) receptor (P2X(7)R) activation. We explored the pharmacological action of compounds known to block gap junctions on Panx1 channels activated by the P2X(7)R and the mechanisms involved in the interaction between these two proteins. Whole cell recordings revealed distinct P2X(7)R and Panx1 currents in response to agonists. Activation of Panx1 currents following P2X(7)R stimulation or by membrane depolarization was blocked by Panx1 small-interfering RNA (siRNA) and with mefloquine > carbenoxolone > flufenamic acid. Incubation of cells with KN-62, a P2X(7)R antagonist, prevented current activation by 2'(3')-O-(4-benzoylbenzoyl)adenosine 5'-triphosphate (BzATP). Membrane permeabilization to dye induced by BzATP was also prevented by Panx1 siRNA and by carbenoxolone and mefloquine. Membrane permeant (TAT-P2X(7)) peptides, provided evidence that the Src homology 3 death domain of the COOH-terminus of the P2X(7)R is involved in the initial steps of the signal transduction events leading to Panx1 activation and that a Src tyrosine kinase is likely involved in this process. Competition assays indicated that 20 microM TAT-P2X(7) peptide caused 50% reduction in Src binding to the P2X(7)R complex. Src tyrosine phosphorylation following BzATP stimulation was reduced by KN-62, TAT-P2X(7) peptide, and by the Src tyrosine inhibitor PP2 and these compounds prevented both large-conductance Panx1 currents and membrane permeabilization. These results together with the lack Panx1 tyrosine phosphorylation in response to P2X(7)R stimulation indicate the involvement of an additional molecule in the tyrosine kinase signal transduction pathway mediating Panx1 activation through the P2X(7)R.
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Affiliation(s)
- R Iglesias
- The Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, USA
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Iglesias R, Pérez Y, Citores L, Ferreras JM, Méndez E, Girbés T. Elicitor-dependent expression of the ribosome-inactivating protein beetin is developmentally regulated. J Exp Bot 2008; 59:1215-1223. [PMID: 18343888 DOI: 10.1093/jxb/ern030] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BE27 and BE29 are two forms of beetin, a virus-inducible type 1 ribosome-inactivating protein isolated from leaves of Beta vulgaris L. Western blot analysis revealed the presence of beetin forms in adult plants but not in germ or young plants, indicating that the expression of these proteins is developmentally regulated. While beetins are expressed only in adult plants, their transcripts are present through all stages of development. In addition, the treatment of B. vulgaris leaves with mediators of plant-acquired resistance such as salicylic acid and hydrogen peroxide promoted the expression of beetin by induction of its transcript, but only in adult plants. The plant expresses three mRNAs which differ only in their 3' untranslated region. All these observations suggest a dual regulation of beetin expression, i.e. at the post-transcriptional and transcriptional levels. Additionally, total RNA isolated from leaves treated with hydrogen peroxide, which express high levels of active beetin, is not de-adenylated by endogenous beetin, nor in vitro by the addition of BE27, thus suggesting that sugar beet ribosomes are resistant to beetin.
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Affiliation(s)
- Rosario Iglesias
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Valladolid, E-47005 Valladolid, Spain
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Crespo-González C, Rodríguez-Domínguez H, Soto-Búa M, Segade P, Iglesias R, Arias-Fernández C, García-Estévez JM. Virus-like particles in Urastoma cyprinae, a turbellarian parasite of Mytilus galloprovincialis. Dis Aquat Organ 2008; 79:83-86. [PMID: 18429445 DOI: 10.3354/dao01889] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Urastoma cyprinae is a turbellarian parasite infecting the gills of several marine bivalves. We observed the presence of virus-like particles (24 to 30 nm in diameter; icosahedral symmetry) arranged in paracrystalline arrays in the cytoplasm of subepidermal dorsal cells. These particles appear to be RNA viruses, possibly related to the Picornaviridae. This is the first report of viral particles in the parasite U. cyprinae.
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Affiliation(s)
- C Crespo-González
- Laboratorio de Parasitología Marina, Facultad de Ciencias del Mar, Universidad de Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Pontevedra, Spain
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Rodríguez E, Anadón AM, García-Bodas E, Romarís F, Iglesias R, Gárate T, Ubeira FM. Novel sequences and epitopes of diagnostic value derived from the Anisakis simplex Ani s 7 major allergen. Allergy 2008; 63:219-25. [PMID: 18186812 DOI: 10.1111/j.1398-9995.2007.01564.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [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: 11/29/2022]
Abstract
BACKGROUND Anisakis simplex allergens may cause severe allergic reactions in infected patients. Human anisakiasis can be specifically diagnosed by detection of immunoglobulin E (IgE) antibodies against O-deglycosylated nAni s 7 allergen captured by monoclonal antibody (mAb) UA3 (UA3-ELISA), although the nature of this important allergen is unknown. The aim of this study was to clone and characterize the Ani s 7 major allergen, and to obtain a recombinant fragment suitable for serodiagnosis. METHODS An Anisakis cDNA library was screened with mAb UA3 and a cDNA clone (rAni s 7) encoding a 1096-amino acid fragment of Ani s 7 (GenBank: EF158010) was identified. Bioinformatic tools and immunological and biochemical techniques were used to characterize the allergen obtained. RESULTS The rAni s 7 fragment comprised 19 repeats of a novel CX(17-25)CX(9-22)CX(8)CX(6) tandem repeat motif not seen in any previously reported protein sequence. An internal (435)Met-(713)Arg fragment of the rAni s 7 (t-Ani s 7) was expressed in Escherichia coli and evaluated for serodiagnostic utility. Indirect enzyme-linked immunosorbent assay (ELISA) with t-Ani s 7 identified as positive the same 60 sera as UA3-ELISA. The sequence MCQCVQKYGTEFCKKRLA from rAni s 7 was identified as the epitope recognized by mAb UA3, and is the target for over 60% of human IgE antibodies that react with O-deglycosylated nAni s 7. CONCLUSIONS In addition to their clear value for serodiagnosis of human anisakiasis, the nature of the novel sequences and epitopes identified in the Ani s 7 allergen are of interest for a better understanding of the mechanisms operating in Anisakis-induced allergy.
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Affiliation(s)
- E Rodríguez
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
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47
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Citores L, Rojo MA, Jiménez P, Ferreras JM, Iglesias R, Aranguez I, Girbés T. Transient occurrence of an ebulin-related D-galactose-lectin in shoots of Sambucus ebulus L. Phytochemistry 2008; 69:857-864. [PMID: 18068741 DOI: 10.1016/j.phytochem.2007.10.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2007] [Revised: 10/09/2007] [Accepted: 10/10/2007] [Indexed: 05/25/2023]
Abstract
Young shoots of Sambucus ebulus L. contain a monomeric d-galactose binding lectin (SELlm), which disappears upon shoot development, and was previously undetected since it co-purifies with the non-toxic type 2 ribosome-inactivating protein ebulin l and the dimeric lectin SELld. Molecular cloning of cDNA coding for SELlm and mass spectrometry analysis revealed a protein with a molecular mass of 34,239 Da, which displays 80%, 77% and 45% of amino acid sequence identity with the ebulin l-B chain, SELld and ricin-B chain, respectively. Furthermore, the cloned precursor, with respect to the ebulin l precursor is truncated and contains the signal peptide, a piece of the A chain, a piece of the connecting peptide and the B chain. Further processing yields the lectin protein, which contains only the B chain. Despite the fact that SELlm displays the same d-galactose-binding sites than ricin, it was found that the lectin has different binding properties to D-galactose-containing matrix than ricin. Notably, and unlike ricin, the binding of SELlm and other Sambucus lectins to such matrix was maximum in range of 0-10 degrees C and abolished at 20 degrees C.
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Affiliation(s)
- Lucía Citores
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Valladolid, E-47005 Valladolid, Spain
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48
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Froideval A, Iglesias R, Samaras M, Schuppler S, Nagel P, Grolimund D, Victoria M, Hoffelner W. Magnetic and structural properties of FeCr alloys. Phys Rev Lett 2007; 99:237201. [PMID: 18233403 DOI: 10.1103/physrevlett.99.237201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Indexed: 05/25/2023]
Abstract
Synergistic synchrotron x-ray absorption experiments using imaging magnetic microspectroscopy, x-ray magnetic circular dichroism, and ab initio calculations on FeCr alloys reveal that the Cr content strongly influences the ferromagnetic microstructure and the Fe magnetic moments. The Cr local structure resolved by extended x-ray absorption fine structure (EXAFS) is also found to be affected by the alloy's composition. Both EXAFS and ab initio calculations show a change in the Cr local atomic structure above 10 at.% Cr content from the distance contraction of the first two coordination shells around the Cr absorbing atom. These results indicate the strong dependence of magnetic and structural properties of these alloys on Cr concentration.
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Affiliation(s)
- A Froideval
- Paul Scherrer Institute, Nuclear Energy and Safety, 5232 Villigen PSI, Switzerland
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49
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Miguel A, Orero M, Simon R, Collado R, Perez PL, Pacios A, Iglesias R, Martinez A, Carbonell F. Automated Neutrophil Morphology and Its Utility in the Assessment of Neutrophil Dysplasia. ACTA ACUST UNITED AC 2007; 13:98-102. [DOI: 10.1532/lh96.07011] [Citation(s) in RCA: 30] [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] [Indexed: 11/20/2022]
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50
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Orero M, Collado R, Pérez PL, Pacios A, Iglesias R, Martínez A, Miguel-Sosa A, Carbonell F. Chronic lymphocytic leukemia with a monoclonal immunoglobulin M lambda lymphocyte agglutinin. ACTA ACUST UNITED AC 2007; 13:56-8. [PMID: 17573282 DOI: 10.1532/lh96.06043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A case of chronic lymphocytic leukemia is described in which peripheral blood films showed lymphocyte agglutination. A serum factor responsible for the agglutination was demonstrated. The factor was dependent upon the presence of anticoagulant solutions and was more active at room temperature than at 37 degrees C. It could be identified as a monoclonal immunoglobulin M. This mechanism has not been previously described in lymphocyte agglutination.
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Affiliation(s)
- M Orero
- Department of Hematology, Consorcio Hospital General, Valencia, Spain.
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