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Oliva R, Ostermeier L, Jaworek MW, Del Vecchio P, Gajardo-Parra N, Cea-Klapp E, Held C, Petraccone L, Winter R. Modulation of protein-saccharide interactions by deep-sea osmolytes under high pressure stress. Int J Biol Macromol 2024; 255:128119. [PMID: 37977458 DOI: 10.1016/j.ijbiomac.2023.128119] [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: 09/25/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 11/19/2023]
Abstract
Deep-sea organisms must cope with high hydrostatic pressures (HHP) up to the kbar regime to control their biomolecular processes. To alleviate the adverse effects of HHP on protein stability most organisms use high amounts of osmolytes. Little is known about the effects of these high concentrations on ligand binding. We studied the effect of the deep-sea osmolytes trimethylamine-N-oxide, glycine, and glycine betaine on the binding between lysozyme and the tri-saccharide NAG3, employing experimental and theoretical tools to reveal the combined effect of osmolytes and HHP on the conformational dynamics, hydration changes, and thermodynamics of the binding process. Due to their different chemical makeup, these cosolutes modulate the protein-sugar interaction in different ways, leading to significant changes in the binding constant and its pressure dependence. These findings suggest that deep-sea organisms may down- and up-regulate reactions in response to HHP stress by altering the concentration and type of the intracellular osmolyte.
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Affiliation(s)
- Rosario Oliva
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 26, 80126 Naples, Italy.
| | - Lena Ostermeier
- Department of Chemistry and Chemical Biology, Biophysical Chemistry, TU Dortmund University, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany
| | - Michel W Jaworek
- Department of Chemistry and Chemical Biology, Biophysical Chemistry, TU Dortmund University, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany
| | - Pompea Del Vecchio
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 26, 80126 Naples, Italy
| | - Nicolas Gajardo-Parra
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Esteban Cea-Klapp
- Departamento de Ingeniería Química, Faculty of Engineering, Universidad de Concepción, Concepción, Chile
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Luigi Petraccone
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 26, 80126 Naples, Italy
| | - Roland Winter
- Department of Chemistry and Chemical Biology, Biophysical Chemistry, TU Dortmund University, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany.
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2
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Ostermeier L, Ascani M, Gajardo-Parra N, Sadowski G, Held C, Winter R. Leveraging liquid-liquid phase separation and volume modulation to regulate the enzymatic activity of formate dehydrogenase. Biophys Chem 2024; 304:107128. [PMID: 37922819 DOI: 10.1016/j.bpc.2023.107128] [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: 09/09/2023] [Revised: 10/26/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023]
Abstract
Engineering of reaction media is an exciting alternative for modulating kinetic properties of biocatalytic reactions. We addressed the combined effect of an aqueous two-phase system (ATPS) and high hydrostatic pressure on the kinetics of the Candida boidinii formate dehydrogenase-catalyzed oxidation of formate to CO2. Pressurization was found to lead to an increase of the binding affinity (decrease of KM, respectively) and a decrease of the turnover number, kcat. The experimental approach was supported using thermodynamic modeling with the electrolyte Perturbed-Chain Statistical Associating Fluid Theory (ePC-SAFT) equation of state to predict the liquid-liquid phase separation and the molecular crowding effect of the ATPS on the kinetic properties. The ePC-SAFT was able to quantitatively predict the KM-values of the substrate in both phases at 1 bar as well as up to a pressure of 1000 bar. The framework presented enables significant advances in bioprocess engineering, including the design of processes with significantly fewer experiments and trial-and-error approaches.
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Affiliation(s)
- Lena Ostermeier
- Department of Chemistry and Chemical, Biology, Physical Chemistry I, TU Dortmund University, 44227 Dortmund, Germany
| | - Moreno Ascani
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Nicolás Gajardo-Parra
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Gabriele Sadowski
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany.
| | - Roland Winter
- Department of Chemistry and Chemical, Biology, Physical Chemistry I, TU Dortmund University, 44227 Dortmund, Germany.
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3
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Servetto N, Ruiz MB, Martínez M, Harms L, de Aranzamendi MC, Alurralde G, Giménez D, Abele D, Held C, Sahade R. Molecular responses to ocean acidification in an Antarctic bivalve and an ascidian. Sci Total Environ 2023; 903:166577. [PMID: 37633374 DOI: 10.1016/j.scitotenv.2023.166577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 08/14/2023] [Accepted: 08/24/2023] [Indexed: 08/28/2023]
Abstract
Southern Ocean organisms are considered particularly vulnerable to Ocean acidification (OA), as they inhabit cold waters where calcite-aragonite saturation states are naturally low. It is also generally assumed that OA would affect calcifying animals more than non-calcifying animals. In this context, we aimed to study the impact of reduced pH on both types of species: the ascidian Cnemidocarpa verrucosa sp. A, and the bivalve Aequiyoldia eightsii, from an Antarctic fjord. We used gene expression profiling and enzyme activity to study the responses of these two Antarctic benthic species to OA. We report the results of an experiment lasting 66 days, comparing the molecular mechanisms underlying responses under two pCO2 treatments (ambient and elevated pCO2). We observed 224 up-regulated and 111 down-regulated genes (FC ≥ 2; p-value ≤ 0.05) in the ascidian. In particular, the decrease in pH caused an upregulation of genes involved in the immune system and antioxidant response. While fewer differentially expressed (DE) genes were observed in the infaunal bivalve, 34 genes were up-regulated, and 69 genes were downregulated (FC ≥ 2; p-value ≤ 0.05) in response to OA. We found downregulated genes involved in the oxidoreductase pathway (such as glucose dehydrogenase and trimethyl lysine dioxygenase), while the heat shock protein 70 was up-regulated. This work addresses the effect of OA in two common, widely distributed Antarctic species, showing striking results. Our major finding highlights the impact of OA on the non-calcifying species, a result that differ from the general trend, which describes a higher impact on calcifying species. This calls for discussion of potential effects on non-calcifying species, such as ascidians, a diverse and abundant group that form extended three-dimensional clusters in shallow waters and shelf areas in the Southern Ocean.
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Affiliation(s)
- N Servetto
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Ecosistemas Marinos Polares (ECOMARES-IDEA), Av. Vélez Sarsfield 299, X5000JJC Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos Polares (ECOMARES), Av. Vélez Sarsfield 299, X5000JJC Córdoba, Argentina.
| | - M B Ruiz
- Alfred Wegener Institute - Helmholtz Centre for Polar and Marine Research, Am Handelshafen, 12 27570 Bremerhaven, Germany; Aquatic Ecosystem Research, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - M Martínez
- Universidad de la Republica, Montevideo, Uruguay
| | - L Harms
- Alfred Wegener Institute - Helmholtz Centre for Polar and Marine Research, Am Handelshafen, 12 27570 Bremerhaven, Germany
| | - M C de Aranzamendi
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Ecosistemas Marinos Polares (ECOMARES-IDEA), Av. Vélez Sarsfield 299, X5000JJC Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos Polares (ECOMARES), Av. Vélez Sarsfield 299, X5000JJC Córdoba, Argentina
| | - G Alurralde
- Department of Environmental Science, Stockholm University, 10691 Stockholm, Sweden; Baltic Marine Environment Protection Commission HELCOM, Helsinki FI-00160, Finland
| | - D Giménez
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Ecosistemas Marinos Polares (ECOMARES-IDEA), Av. Vélez Sarsfield 299, X5000JJC Córdoba, Argentina
| | - D Abele
- Alfred Wegener Institute - Helmholtz Centre for Polar and Marine Research, Am Handelshafen, 12 27570 Bremerhaven, Germany
| | - C Held
- Alfred Wegener Institute - Helmholtz Centre for Polar and Marine Research, Am Handelshafen, 12 27570 Bremerhaven, Germany
| | - R Sahade
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Ecosistemas Marinos Polares (ECOMARES-IDEA), Av. Vélez Sarsfield 299, X5000JJC Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos Polares (ECOMARES), Av. Vélez Sarsfield 299, X5000JJC Córdoba, Argentina.
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Beck KK, Nierste J, Schmidt-Grieb GM, Lüdtke E, Naab C, Held C, Nehrke G, Steinhoefel G, Laudien J, Richter C, Wall M. Ontogenetic differences in the response of the cold-water coral Caryophyllia huinayensis to ocean acidification, warming and food availability. Sci Total Environ 2023; 900:165565. [PMID: 37495133 DOI: 10.1016/j.scitotenv.2023.165565] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 03/23/2023] [Revised: 07/03/2023] [Accepted: 07/14/2023] [Indexed: 07/28/2023]
Abstract
Cold-water corals (CWCs) are considered vulnerable to environmental changes. However, previous studies have focused on adult CWCs and mainly investigated the short-term effects of single stressors. So far, the effects of environmental changes on different CWC life stages are unknown, both for single and multiple stressors and over long time periods. Therefore, we conducted a six-month aquarium experiment with three life stages of Caryophyllia huinayensis to study their physiological response (survival, somatic growth, calcification and respiration) to the interactive effects of aragonite saturation (0.8 and 2.5), temperature (11 and 15 °C) and food availability (8 and 87 μg C L-1). The response clearly differed between life stages and measured traits. Elevated temperature and reduced feeding had the greatest effects, pushing the corals to their physiological limits. Highest mortality was observed in adult corals, while calcification rates decreased the most in juveniles. We observed a three-month delay in response, presumably because energy reserves declined, suggesting that short-term experiments overestimate coral resilience. Elevated summer temperatures and reduced food supply are likely to have the greatest impact on live CWCs in the future, leading to reduced coral growth and population shifts due to delayed juvenile maturation and high adult mortality.
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Affiliation(s)
- Kristina K Beck
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; University of Bremen, Bremen, Germany.
| | - Jan Nierste
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; University of Rostock, Rostock, Germany
| | | | - Esther Lüdtke
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Christoph Naab
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; University of Augsburg, Augsburg, Germany
| | - Christoph Held
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Gernot Nehrke
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Grit Steinhoefel
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Jürgen Laudien
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Claudio Richter
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; University of Bremen, Bremen, Germany
| | - Marlene Wall
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany
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5
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Clark MS, Hoffman JI, Peck LS, Bargelloni L, Gande D, Havermans C, Meyer B, Patarnello T, Phillips T, Stoof-Leichsenring KR, Vendrami DLJ, Beck A, Collins G, Friedrich MW, Halanych KM, Masello JF, Nagel R, Norén K, Printzen C, Ruiz MB, Wohlrab S, Becker B, Dumack K, Ghaderiardakani F, Glaser K, Heesch S, Held C, John U, Karsten U, Kempf S, Lucassen M, Paijmans A, Schimani K, Wallberg A, Wunder LC, Mock T. Multi-omics for studying and understanding polar life. Nat Commun 2023; 14:7451. [PMID: 37978186 PMCID: PMC10656552 DOI: 10.1038/s41467-023-43209-y] [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: 04/24/2023] [Accepted: 11/02/2023] [Indexed: 11/19/2023] Open
Abstract
Polar ecosystems are experiencing amongst the most rapid rates of regional warming on Earth. Here, we discuss 'omics' approaches to investigate polar biodiversity, including the current state of the art, future perspectives and recommendations. We propose a community road map to generate and more fully exploit multi-omics data from polar organisms. These data are needed for the comprehensive evaluation of polar biodiversity and to reveal how life evolved and adapted to permanently cold environments with extreme seasonality. We argue that concerted action is required to mitigate the impact of warming on polar ecosystems via conservation efforts, to sustainably manage these unique habitats and their ecosystem services, and for the sustainable bioprospecting of novel genes and compounds for societal gain.
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Affiliation(s)
- M S Clark
- British Antarctic Survey, UKRI-NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK.
| | - J I Hoffman
- British Antarctic Survey, UKRI-NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK.
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany.
| | - L S Peck
- British Antarctic Survey, UKRI-NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK.
| | - L Bargelloni
- Department of Comparative Biomedicine and Food Science, Università degli Studi di Padova, Viale dell'Università 16, I-35020, Legnaro, Italy
| | - D Gande
- Microbial Ecophysiology Group, Faculty of Biology/Chemistry & MARUM, University of Bremen, Leobener Straße 3, 28359, Bremen, Germany
| | - C Havermans
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - B Meyer
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Oldenburg, Germany
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), 23129, Oldenburg, Germany
| | - T Patarnello
- Department of Comparative Biomedicine and Food Science, Università degli Studi di Padova, Viale dell'Università 16, I-35020, Legnaro, Italy
| | - T Phillips
- British Antarctic Survey, UKRI-NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - K R Stoof-Leichsenring
- Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, 14473, Potsdam, Germany
| | - D L J Vendrami
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany
| | - A Beck
- Staatliche Naturwissenschaftliche Sammlungen Bayerns, Botanische Staatssammlung München (SNSB-BSM), Menzinger Str. 67, 80638, München, Germany
| | - G Collins
- Senckenberg Biodiversity and Climate Research Centre & Loewe-Centre for Translational Biodiversity Genomics, Senckenberganlage 25, 60325, Frankfurt am Main, Germany
- Manaaki Whenua-Landcare Research, 231 Morrin Road St Johns, Auckland, 1072, New Zealand
| | - M W Friedrich
- Microbial Ecophysiology Group, Faculty of Biology/Chemistry & MARUM, University of Bremen, Leobener Straße 3, 28359, Bremen, Germany
| | - K M Halanych
- Center for Marine Science, University of North Carolina, 5600 Marvin K. Moss Lane, Wilmington, NC, 28409, USA
| | - J F Masello
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany
- Justus-Liebig-Universität Gießen, Giessen, Germany
| | - R Nagel
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany
- School of Biology, University of St Andrews, St Andrews, Fife, KY16 9TH, UK
| | - K Norén
- Department of Zoology, Stockholm University, 106 91, Stockholm, Sweden
| | - C Printzen
- Senckenberg Biodiversity and Climate Research Centre & Loewe-Centre for Translational Biodiversity Genomics, Senckenberganlage 25, 60325, Frankfurt am Main, Germany
- Natural History Museum Frankfurt, Senckenberganlage 25, 60325, Frankfurt am Main, Germany
| | - M B Ruiz
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
- Universität Duisburg-Essen, Universitätstrasse 5, 45151, Essen, Germany
| | - S Wohlrab
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), 23129, Oldenburg, Germany
| | - B Becker
- Universität zu Köln, Institut für Pflanzenwissenschaften, Zülpicher Str. 47b, 60674, Köln, Germany
| | - K Dumack
- Universität zu Köln, Terrestrische Ökologie, Zülpicher Str. 47b, 60674, Köln, Germany
| | - F Ghaderiardakani
- Institute for Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Lessingstraße 8, 07743, Jena, Germany
| | - K Glaser
- Institute of Biological Sciences, Applied Ecology and Phycology, University of Rostock, Albert-Einstein-Straße 3, 18059, Rostock, Germany
| | - S Heesch
- Institute of Biological Sciences, Applied Ecology and Phycology, University of Rostock, Albert-Einstein-Straße 3, 18059, Rostock, Germany
| | - C Held
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - U John
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - U Karsten
- Institute of Biological Sciences, Applied Ecology and Phycology, University of Rostock, Albert-Einstein-Straße 3, 18059, Rostock, Germany
| | - S Kempf
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - M Lucassen
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - A Paijmans
- Universität Bielefeld, VHF, Konsequenz 45, 33615, Bielefeld, Germany
| | - K Schimani
- Botanischer Garten und Botanisches Museum Berlin, Freie Universität Berlin, Königin-Luise-Straße 6-8, 14195, Berlin, Germany
| | - A Wallberg
- Department of Medical Biochemistry and Microbiology, Uppsala University, Husargatan 3, 751 23, Uppsala, Sweden
| | - L C Wunder
- Microbial Ecophysiology Group, Faculty of Biology/Chemistry & MARUM, University of Bremen, Leobener Straße 3, 28359, Bremen, Germany
| | - T Mock
- School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK.
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Fiesinger A, Held C, Schmidt AL, Putchim L, Melzner F, Wall M. Dominance of the coral Pocillopora acuta around Phuket Island in the Andaman Sea, Thailand. Ecol Evol 2023; 13:e10724. [PMID: 38020692 PMCID: PMC10643679 DOI: 10.1002/ece3.10724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 10/19/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Pocillopora damicornis (Linnaeus, 1758), a species complex, consists of several genetic lineages, some of which likely represent reproductively isolated species, including the species Pocillopora acuta Lamarck, 1816. Pocillopora acuta can exhibit similar morphological characteristics as P. damicornis, thus making it difficult to identify species-level taxonomic units. To determine whether the P. damicornis-like colonies on the reefs in the Andaman Sea (previously often identified as P. damicornis) consist of different species, we sampled individual colonies at five sites along a 50 km coastal stretch at Phuket Island and four island sites towards Krabi Province, Thailand. We sequenced 210 coral samples for the mitochondrial open reading frame and identified six distinct haplotypes, all belonging to P. acuta according to the literature. Recently, P. acuta was observed to efficiently recolonize heat-damaged reefs in Thailand as well as globally, making it a potentially important coral species in future reefs. Specifically in the light of global change, this study underscores the importance of high-resolution molecular species recognition, since taxonomic units are important factors for population genetic studies, and the latter are crucial for management and conservation efforts.
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Affiliation(s)
- Anna Fiesinger
- GEOMAR Helmholtz Centre for Ocean Research KielKielGermany
- Department of BiologyUniversity of KonstanzKonstanzGermany
| | - Christoph Held
- Alfred‐Wegener‐InstitutHelmholtz‐Zentrum für Polar‐ und MeeresforschungBremerhavenGermany
| | - Andrea L. Schmidt
- GEOMAR Helmholtz Centre for Ocean Research KielKielGermany
- Cooperative Institute for Marine and Atmospheric ResearchUniversity of Hawai‘i at ManoaHonoluluHonoluluUSA
| | | | - Frank Melzner
- GEOMAR Helmholtz Centre for Ocean Research KielKielGermany
| | - Marlene Wall
- GEOMAR Helmholtz Centre for Ocean Research KielKielGermany
- Alfred‐Wegener‐InstitutHelmholtz‐Zentrum für Polar‐ und MeeresforschungBremerhavenGermany
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7
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Fiesinger A, Held C, Melzner F, Putchim L, Reusch TBH, Schmidt AL, Wall M. Population genetic differentiation of the ubiquitous brooding coral Pocillopora acuta along Phuket Island reefs in the Andaman Sea, Thailand. BMC Ecol Evol 2023; 23:42. [PMID: 37626296 PMCID: PMC10464487 DOI: 10.1186/s12862-023-02153-7] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND The widespread Indo-Pacific coral species Pocillopora acuta Lamarck, 1816 displays varying levels of asexual versus sexual reproduction, with strong repercussions on genetic diversity, connectivity and genetic structuring within and among populations. For many geographic regions, baseline information on genetic diversity is still lacking, particularly in the Andaman Sea. The region suffered a massive heat-induced bleaching event in 2010 with high coral cover loss of branching coral species such as P. acuta. A subsequent bleaching in 2016, however, revealed a mild bleaching response in pocilloporids compared to other coral taxa in the region, suggesting that rare, heat tolerant genotypes had been selected by the 2010 bleaching event. In order to test whether this potential 'evolutionary rescue' event has led to a low genetic diversity, we conducted a population genetic survey covering a total of nine different P. acuta populations (336 individuals) along a 50 km coastal stretch around Phuket Island, Thailand. We used six microsatellite markers to assess genotypic diversity and to determine the prevalent mode of reproduction (i.e. sexual or asexual recruitment). RESULTS In contrast to other Indian Ocean P. acuta populations, the majority of corals in this study adopted a sexual reproduction mode (75% across all populations). At the same time, substantial regional gene flow was observed around Phuket Island with strong genetic differentiation as indicated by three genetic clusters that were separated by only a few kilometers. Patterns of isolation by distance over 0.7 - 40 km suggest small-scale genetic barriers, such as changing currents throughout each monsoonal season, potentially contributing to locally restricted dispersal of P. acuta larvae. CONCLUSIONS The occurrence of distinct genetic clusters within short coastal stretches suggests that the 2010 bleaching event has not led to extreme genetic impoverishment. While more in-depth genomic analyses are necessary to investigate changes in genetic diversity following extreme bleaching events, our results will help guide conservation efforts to maintain genetic diversity of a coral species that likely will be dominant in future, warmer Andaman Sea reefs.
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Affiliation(s)
- Anna Fiesinger
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Research Unit Experimental Ecology - Benthic Ecology, Wischhofstraße 1-3, 24148, Kiel, Germany.
- Department of Biology, University of Konstanz, Universitätsstraße 10, Konstanz, 78464, Germany.
| | - Christoph Held
- Alfred-Wegener-Institut, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany
| | - Frank Melzner
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Research Unit Experimental Ecology - Benthic Ecology, Wischhofstraße 1-3, 24148, Kiel, Germany
| | - Lalita Putchim
- Phuket Marine Biological Centre, Wichit, Phuket, Mueang Phukt District, 83000, Thailand
| | - Thorsten B H Reusch
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Research Unit Marine Evolutionary Ecoloy, Wischhofstraße 1-3, Kiel, 24148, Germany
| | - Andrea L Schmidt
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Research Unit Experimental Ecology - Benthic Ecology, Wischhofstraße 1-3, 24148, Kiel, Germany
- Cooperative Institute for Marine and Atmospheric Research, University of Hawai'i, Honolulu, HI, 96822, USA
| | - Marlene Wall
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Research Unit Experimental Ecology - Benthic Ecology, Wischhofstraße 1-3, 24148, Kiel, Germany.
- Alfred-Wegener-Institut, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany.
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8
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van Lingen T, Bragoni V, Dyga M, Exner B, Schick D, Held C, Sadowski G, Goossen LJ. Carboxylation of Acetylene without Salt Waste: Green Synthesis of C4 Chemicals Enabled by a CO2-Pressure Induced Acidity Switch. Angew Chem Int Ed Engl 2023:e202303882. [PMID: 37084076 DOI: 10.1002/anie.202303882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/19/2023] [Accepted: 04/20/2023] [Indexed: 04/22/2023]
Abstract
The inherent formation of salt waste in C-H carboxylations is a key obstacle precluding the utilization of CO2 as C1 building block in the industrial synthesis of base chemicals. This challenge is addressed in a circular process for the production of the C4 base chemical dimethyl succinate from CO2 and acetylene. At moderate CO2 pressures, acetylene is doubly carboxylated in the presence of cesium carbonate. Hydrogenation of the C-C triple bond stabilizes the product against decarboxylation. By increasing the CO2 pressure to 70 bar, the medium is reversibly acidified, allowing an esterification of the succinate salt with methanol. The cesium base and the hydrogenation catalyst are regenerated and can be reused. This provides the proof of concept for a salt-free route to C4 chemicals from biogas (CH4/CO2). The origin of this reversible acidity switch and the critical roles of the cesium base and the NMP/MeOH solvents were elucidated by thermodynamic modeling.
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Affiliation(s)
- Tim van Lingen
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Organic Chemistry, Universitätsstr. 150, 44801, Bochum, GERMANY
| | - Valentina Bragoni
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Organic Chemistry, Universitätsstr. 150,, 44801, Bochum, GERMANY
| | - Marco Dyga
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Organic Chemistry, Universitätsstr. 150, 44801, Bochum, GERMANY
| | - Benjamin Exner
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Organic Chemistry, Universitätsstr. 150, 44801, Bochum, GERMANY
| | - Daniel Schick
- TU Dortmund: Technische Universitat Dortmund, Departmenf of Biochemical and Chemical Engineering, Emil-Figge Str. 70, 44277, Dortmund, GERMANY
| | - Christoph Held
- TU Dortmund: Technische Universitat Dortmund, Department of Biochemical and Chemical Engineering, Emil-Figge Str. 70, 44277, Dortmund, GERMANY
| | - Gabriele Sadowski
- TU Dortmund: Technische Universitat Dortmund, Department of Biochemical and Chemical Engineering, Emil-Figge Str. 70, 44277, Dortmund, GERMANY
| | - Lukas J Goossen
- Ruhr-Universität Bochum, Organische Chemie I, Universitätsstraße 150, ZEMOS 2/27, 44801, 44801 Bochum, GERMANY
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9
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Martínez M, Harms L, Abele D, Held C. Mitochondrial Heteroplasmy and PCR Amplification Bias Lead to Wrong Species Delimitation with High Confidence in the South American and Antarctic Marine Bivalve Aequiyoldia eightsii Species Complex. Genes (Basel) 2023; 14:genes14040935. [PMID: 37107693 PMCID: PMC10138075 DOI: 10.3390/genes14040935] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
The species delimitation of the marine bivalve species complex Aequiyoldia eightsii in South America and Antarctica is complicated by mitochondrial heteroplasmy and amplification bias in molecular barcoding. In this study, we compare different data sources (mitochondrial cytochrome c oxidase subunit I (COI) sequences; nuclear and mitochondrial SNPs). Whilst all the data suggest that populations on either side of the Drake Passage belong to different species, the picture is less clear within Antarctic populations, which harbor three distinct mitochondrial lineages (p-dist ≈ 6%) that coexist in populations and in a subset of individuals with heteroplasmy. Standard barcoding procedures lead to amplification bias favoring either haplotype unpredictably and thus overestimate the species richness with high confidence. However, nuclear SNPs show no differentiation akin to the trans-Drake comparison, suggesting that the Antarctic populations represent a single species. Their distinct haplotypes likely evolved during periods of temporary allopatry, whereas recombination eroded similar differentiation patterns in the nuclear genome after secondary contact. Our study highlights the importance of using multiple data sources and careful quality control measures to avoid bias and increase the accuracy of molecular species delimitation. We recommend an active search for mitochondrial heteroplasmy and haplotype-specific primers for amplification in DNA-barcoding studies.
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Affiliation(s)
- Mariano Martínez
- Functional Ecology, Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Am Handelshafen 12, 27570 Bremerhaven, Germany
- Oceanografía y Ecología Marina, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay
| | - Lars Harms
- Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Am Handelshafen 12, 27570 Bremerhaven, Germany
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), Ammerländer Herrstrasse 231, 26129 Oldenburg, Germany
| | - Doris Abele
- Functional Ecology, Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Christoph Held
- Functional Ecology, Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Am Handelshafen 12, 27570 Bremerhaven, Germany
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10
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Pyka T, Brunert M, Koop J, Bieberle A, Held C, Schembecker G. Novel Liquid Distributor Concept for Rotating Packed Beds. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.3c00248] [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: 03/31/2023]
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11
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Klinksiek M, Baco S, Leveneur S, Legros J, Held C. Cover Feature: Activity‐Based Models to Predict Kinetics of Levulinic Acid Esterification (ChemPhysChem 4/2023). Chemphyschem 2023. [DOI: 10.1002/cphc.202300042] [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: 02/16/2023]
Affiliation(s)
- Marcel Klinksiek
- Laboratory of Thermodynamics Department of Biochemical and Chemical Engineering TU Dortmund University Emil-Figge-Str. 70 44227 Dortmund Germany
| | - Sindi Baco
- INSA Rouen, UNIROUEN Normandie Univ LSPC UR4704 76000 Rouen France
- INSA Rouen CNRS Normandie Université UNIROUEN COBRA laboratory 76000 Rouen France
| | | | - Julien Legros
- INSA Rouen CNRS Normandie Université UNIROUEN COBRA laboratory 76000 Rouen France
| | - Christoph Held
- Laboratory of Thermodynamics Department of Biochemical and Chemical Engineering TU Dortmund University Emil-Figge-Str. 70 44227 Dortmund Germany
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12
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Klinksiek M, Baco S, Leveneur S, Legros J, Held C. Activity-Based Models to Predict Kinetics of Levulinic Acid Esterification. Chemphyschem 2023; 24:e202200729. [PMID: 36264764 DOI: 10.1002/cphc.202200729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/20/2022] [Indexed: 11/09/2022]
Abstract
The solvent is of prime importance in biomass conversion as it influences dissolution, reaction kinetics, catalyst activity and thermodynamic equilibrium of the reaction system. So far, activity-based models were developed to predict kinetics and equilibria, but the influence of the catalyst on kinetics has not been succesfully predicted by thermodynamic models. In this work, the thermodynamic model ePC-SAFT advanced was used to predict the activities of the reactants and of the catalyst at various conditions (temperature, reactant concentrations, γ-valerolactone GVL cosolvent addition, catalyst concentration) for the homogeneously acid-catalyzed esterification of levulinic acid (LA) with ethanol. Different kinetic models were applied, and it was found that the catalyst influence on kinetics could be predicted correctly by simultaneously solving the dissociation equilibrium of H2 SO4 catalyst along the reaction coordinate and by relating reaction kinetics to proton activity. ePC-SAFT advanced model parameters were only fitted to reaction-independent phase equilibrium data. The key reaction properties were determined by applying ePC-SAFT advanced to one experimental kinetic curve for a set of temperatures, yielding the reaction enthalpy at standard state Δ R H 0 = 11 . 48 k J m o l - 1 ${{\Delta }^{R}{H}^{0}=11.48\ kJ\ mo{l}^{-1}}$ , activation energy E A = 30 . 28 k J m o l - 1 ${{E}_{A}=30.28\ kJ\ mo{l}^{-1}}$ and the intrinsic reaction rate constant k=0.011 s-1 at 323 K, which is independent of catalyst concentration. The new procedure allowed an a-priori identification of the effects of catalyst, solvent and reactant concentration on LA esterification.
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Affiliation(s)
- Marcel Klinksiek
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227, Dortmund, Germany
| | - Sindi Baco
- INSA Rouen, UNIROUEN, Normandie Univ, LSPC UR4704, 76000, Rouen, France.,INSA Rouen, CNRS, Normandie Université, UNIROUEN COBRA laboratory, 76000, Rouen, France
| | | | - Julien Legros
- INSA Rouen, CNRS, Normandie Université, UNIROUEN COBRA laboratory, 76000, Rouen, France
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227, Dortmund, Germany
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13
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Ascani M, Sadowski G, Held C. Simultaneous Predictions of Chemical and Phase Equilibria in Systems with an Esterification Reaction Using PC-SAFT. Molecules 2023; 28:molecules28041768. [PMID: 36838768 PMCID: PMC9965742 DOI: 10.3390/molecules28041768] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/10/2023] [Accepted: 02/11/2023] [Indexed: 02/16/2023] Open
Abstract
The study of chemical reactions in multiple liquid phase systems is becoming more and more relevant in industry and academia. The ability to predict combined chemical and phase equilibria is interesting from a scientific point of view but is also crucial to design innovative separation processes. In this work, an algorithm to perform the combined chemical and liquid-liquid phase equilibrium calculation was implemented in the PC-SAFT framework in order to predict the thermodynamic equilibrium behavior of two multicomponent esterification systems. Esterification reactions involve hydrophobic reacting agents and water, which might cause liquid-liquid phase separation along the reaction coordinate, especially if long-chain alcoholic reactants are used. As test systems, the two quaternary esterification systems starting from the reactants acetic acid + 1-pentanol and from the reactants acetic acid + 1-hexanol were chosen. It is known that both quaternary systems exhibit composition regions of overlapped chemical and liquid-liquid equilibrium. To the best of our knowledge, this is the first time that PC-SAFT was used to calculate simultaneous chemical and liquid-liquid equilibria. All the binary subsystems were studied prior to evaluating the predictive capability of PC-SAFT toward the simultaneous chemical equilibria and phase equilibria. Overall, PC-SAFT proved its excellent capabilities toward predicting chemical equilibrium composition in the homogeneous composition range of the investigated systems as well as liquid-liquid phase behavior. This study highlights the potential of a physical sound model to perform thermodynamic-based modeling of chemical reacting systems undergoing liquid-liquid phase separation.
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14
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Yu G, Parra NFG, Chen M, Chen B, Sadowski G, Held C. Aromatic
VOCs
absorption with phenyl–based deep eutectic solvents: A molecular thermodynamics and dynamics study. AIChE J 2023. [DOI: 10.1002/aic.18053] [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: 01/26/2023]
Affiliation(s)
- Gangqiang Yu
- Faculty of Environment and Life Beijing University of Technology 100 Ping Le Yuan Chaoyang District Beijing China
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering TU Dortmund University Emil–Figge–Str. 70 Dortmund Germany
| | - Nicolás Felipe Gajardo Parra
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering TU Dortmund University Emil–Figge–Str. 70 Dortmund Germany
| | - Min Chen
- Faculty of Environment and Life Beijing University of Technology 100 Ping Le Yuan Chaoyang District Beijing China
| | - Biaohua Chen
- Faculty of Environment and Life Beijing University of Technology 100 Ping Le Yuan Chaoyang District Beijing China
| | - Gabriele Sadowski
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering TU Dortmund University Emil–Figge–Str. 70 Dortmund Germany
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering TU Dortmund University Emil–Figge–Str. 70 Dortmund Germany
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15
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Martínez M, González-Aravena M, Held C, Abele D. A molecular perspective on the invasibility of the southern ocean benthos: The impact of hypoxia and temperature on gene expression in South American and Antarctic Aequiyoldia bivalves. Front Physiol 2023; 14:1083240. [PMID: 36895632 PMCID: PMC9989211 DOI: 10.3389/fphys.2023.1083240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 02/10/2023] [Indexed: 02/23/2023] Open
Abstract
When an organism makes a long-distance transition to a new habitat, the associated environmental change is often marked and requires physiological plasticity of larvae, juveniles, or other migrant stages. Exposing shallow-water marine bivalves (Aequiyoldia cf. eightsii) from southern South America (SSA) and the West Antarctic Peninsula (WAP) to changes in temperature and oxygen availability, we investigated changes in gene expression in a simulated colonization experiment of the shores of a new continent after crossing of the Drake Passage, and in a warming scenario in the WAP. Bivalves from SSA were cooled from 7°C (in situ) to 4°C and 2°C (future warmed WAP conditions), WAP bivalves were warmed from 1.5°C (current summer in situ) to 4°C (warmed WAP), gene expression patterns in response to thermal stress by itself and in combination with hypoxia were measured after 10 days. Our results confirm that molecular plasticity may play a vital role for local adaptation. Hypoxia had a greater effect on the transcriptome than temperature alone. The effect was further amplified when hypoxia and temperature acted as combined stressors. The WAP bivalves showed a remarkable ability to cope with short-term exposure to hypoxia by switching to a metabolic rate depression strategy and activating the alternative oxidation pathway, whilst the SSA population showed no comparable response. In SSA, the high prevalence of apoptosis-related differentially expressed genes especially under combined higher temperatures and hypoxia indicated that the SSA Aequiyoldia are operating near their physiological limits already. While the effect of temperature per se may not represent the single most effective barrier to Antarctic colonization by South American bivalves, the current distribution patterns as well as their resilience to future conditions can be better understood by looking at the synergistic effects of temperature in conjunction with short-term exposure to hypoxia.
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Affiliation(s)
- Mariano Martínez
- Funktionelle Ökologie, Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | | | - Christoph Held
- Funktionelle Ökologie, Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Doris Abele
- Funktionelle Ökologie, Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
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16
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Pyka T, Koop J, Held C, Schembecker G. Dry Pressure Drop in a Two-Rotor Rotating Packed Bed. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02500] [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: 11/12/2022]
Affiliation(s)
- Tobias Pyka
- TU Dortmund University, Department of Biochemical and Chemical Engineering, Laboratory of Fluid Separations, Emil-Figge-Straße 70, 44227Dortmund, Germany
- TU Dortmund University, Department of Biochemical and Chemical Engineering, Laboratory of Plant and Process Design, Emil-Figge-Straße 70, 44227Dortmund, Germany
| | - Jörg Koop
- TU Dortmund University, Department of Biochemical and Chemical Engineering, Laboratory of Plant and Process Design, Emil-Figge-Straße 70, 44227Dortmund, Germany
| | - Christoph Held
- TU Dortmund University, Department of Biochemical and Chemical Engineering, Laboratory of Fluid Separations, Emil-Figge-Straße 70, 44227Dortmund, Germany
| | - Gerhard Schembecker
- TU Dortmund University, Department of Biochemical and Chemical Engineering, Laboratory of Plant and Process Design, Emil-Figge-Straße 70, 44227Dortmund, Germany
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17
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Ishak D, Aktaa S, Lindhagen L, Alfredsson J, Dondo TB, Held C, Jernberg T, Yndigegn T, Gale CP, Batra G. Association of beta-blockers beyond 1 year after myocardial infarction for patients without heart failure or left ventricular systolic dysfunction and cardiovascular outcomes: nationwide cohort study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Beta-blockers (BB) is an established treatment following presentation with myocardial infarction (MI). However, there is uncertainty as to whether BB use beyond the first year of MI has a secondary preventive role in patients without heart failure and/or left ventricular systolic dysfunction (LVSD).
Purpose
To investigate the association between BB treatment beyond one year after MI for patients without heart failure or LVSD and cardiovascular (CV) outcomes.
Methods
We used data from SWEDEHEART, the national Swedish register for coronary heart disease, to identify patients with MI who were hospitalised between 2005 and 2016. Deterministic linkage of individual patient data was performed with the National Patient Register, the Swedish Prescribed Drug Register, and the National Cause of Death Register. Patients with heart failure or LVSD with left ventricular ejection fraction <50% were excluded. Follow-up started at 1 year after hospitalisation with first MI (index date), when patients were allocated into two groups according to BB treatment. Information about BB treatment at index date and during follow-up was obtained from the Swedish National Prescribed Drug Register. The primary outcome was a composite of all-cause mortality, recurrent MI, unscheduled revascularisation or hospitalisation for heart failure. Secondary outcomes comprised the individual components of the composite outcome, CV death and stroke. Comparison of outcomes between the study groups was performed using Cox and Fine-Gray regression models adjusting for relevant clinical factors after propensity-score weighting. In the main intention-to-treat analysis, patients were censored at end of follow-up (31st December 2017), death or at pre-specified outcome, whichever came first. In supplementary per-protocol analysis, patients were, in addition, censored at the time of first BB discontinuation or switch between treatment arms.
Results
A total of 43,618 patients with MI were hospitalised between 2005 and 2016. Of these, 34,253 (78.5%) were prescribed BB and 9,365 (21.5%) were not on BB treatment at index date 1 year following MI. The median age of the population was 64 years, 25.5% were female, and 36.2% had a STEMI. Median follow-up was 4.5 years. In the intention-to-treat analysis, and after multivariable adjustments and propensity score weighting, BB treatment was associated with a similar rate of the composite CV outcome (hazard ratio [HR] 0.99; 95% confidence interval [CI] 0.93–1.04) compared with no BB treatment. A similar finding was observed when censoring for BB discontinuation or treatment switch during follow-up in a per-protocol analysis (HR 0.98; 95% CI 0.98–1.06). Similar associations were observed for all secondary outcomes (Figure 1).
Conclusions
BB treatment beyond one year after MI for patients without heart failure or LVSD is not associated with a different risk of cardiovascular outcomes compared with patients who do not receive BB.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): The study was financed by grants from the Swedish state under the agreement between the Swedish government and the county councils, the ALF-agreement.
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Affiliation(s)
- D Ishak
- Uppsala University, Department of Medical Sciences, Cardiology , Uppsala , Sweden
| | - S Aktaa
- University of Leeds, Leeds Institute of Cardiovascular and Metabolic Medicine, Leeds Institute for Data Analytics , Leeds , United Kingdom
| | - L Lindhagen
- Uppsala University, Uppsala Clinical Research Center , Uppsala , Sweden
| | - J Alfredsson
- Linköping University, Department of Health, Medicine and Caring Sciences and Department of Cardiology , Linköping , Sweden
| | - T B Dondo
- University of Leeds, Leeds Institute of Cardiovascular and Metabolic Medicine, Leeds Institute for Data Analytics , Leeds , United Kingdom
| | - C Held
- Uppsala University, Department of Medical Sciences, Cardiology, Uppsala Clinical Research Center , Uppsala , Sweden
| | - T Jernberg
- Danderyd University Hospital, Division of Cardiovascular Medicine, Department of Clinical Sciences , Stockholm , Sweden
| | - T Yndigegn
- Lund University, Department of Cardiology , Lund , Sweden
| | - C P Gale
- University of Leeds, Leeds Institute of Cardiovascular and Metabolic Medicine, Leeds Institute for Data Analytics , Leeds , United Kingdom
| | - G Batra
- Uppsala University, Department of Medical Sciences, Cardiology, Uppsala Clinical Research Center , Uppsala , Sweden
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18
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Christersson C, Skogseid EL, Westerbergh J, Held C, Batra G. Oral anticoagulant treatment in patients with atrial fibrillation early after valvular intervention: a nationwide cohort study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Treatment with non-vitamin K oral anticoagulants (NOAC) is the first option for primary prevention of ischaemic stroke in patients with atrial fibrillation (AF). However, there is still an evidence gap regarding efficacy and safety of NOAC in patients with AF and severe valvular heart disease undergoing valvular intervention.
Purpose
The aim was to evaluate the efficacy and safety of NOAC or no oral anticoagulant (OAC) treatment versus warfarin during the first 3 months after valvular intervention.
Methods
We used data from the National Quality Register SWEDEHEART and included all patients with AF discharged after surgical valvular intervention with bioprosthesis or valvuloplasty, or transcatheter aortic valve implantation (TAVI) between 2010 and 2016. Outcomes, including the composite of cardiovascular (CV) events (CV death, ischaemic stroke or systemic embolism), major bleeding, and relevant comorbidities and OAC treatment at discharge were collected from the National Patient Register, the Swedish Prescribed Drug Register, and the National Cause of Death Register. The association between exposure (warfarin, NOAC or no OAC) and occurrence of composite CV events and major bleeding was explored using a time-dependent adjusted Cox regression analysis.
Results
In total, 4730 patients with AF and valvular intervention were included. The cohort had a mean age of 75 years, 35.9% were women and mean CHA2DS2-VASc score was 3.3 (Table 1). The proportion of patients treated with warfarin was higher in patients undergoing surgical valve intervention whereas NOAC was more commonly prescribed to patients treated with TAVI. Rates of composite CV events and major bleeding was similar between patients treated with NOAC versus warfarin. No OAC treatment versus warfarin was associated with higher rate of composite CV event, but with no difference with regard to major bleeding (Table 1).
Conclusion
A large proportion of patients with AF undergoing valvular intervention was not treated with OAC despite having a high CHA2DS2-VASc score. Also, patients on no OAC versus warfarin had a higher risk of i CV events in the early phase after valvular intervention. The efficacy and safety of NOAC was similar compared to warfarin during the first 3 months after intervention. Treatment with OAC in patients with AF, irrespective of NOAC or warfarin, was associated with improved clinical outcome early after valve intervention.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- C Christersson
- Uppsala University, Department of Medical Sciences, Cardiology , Uppsala , Sweden
| | - E L Skogseid
- Uppsala University, Department of Medical Sciences, Cardiology , Uppsala , Sweden
| | - J Westerbergh
- Uppsala University, UCR-Uppsala Clinical Research Center , Uppsala , Sweden
| | - C Held
- Uppsala University, Department of Medical Sciences, Cardiology , Uppsala , Sweden
| | - G Batra
- Uppsala University, Department of Medical Sciences, Cardiology , Uppsala , Sweden
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19
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Baco S, Klinksiek M, Ismail Bedawi Zakaria R, Antonia Garcia-Hernandez E, Mignot M, Legros J, Held C, Casson Moreno V, Leveneur S. Solvent effect investigation on the acid-catalyzed esterification of levulinic acid by ethanol aided by a Linear Solvation Energy Relationship. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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20
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Gajardo-Parra N, Meneses L, Duarte ARC, Paiva A, Held C. Assessing the Influence of Betaine-Based Natural Deep Eutectic Systems on Horseradish Peroxidase. ACS Sustain Chem Eng 2022; 10:12873-12881. [PMID: 36573121 PMCID: PMC9783073 DOI: 10.1021/acssuschemeng.2c04045] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/26/2022] [Indexed: 06/02/2023]
Abstract
To validate the use of horseradish peroxidase (HRP) in natural deep eutectic systems (NADES), five different betaine-based NADES were characterized in terms of water content, water activity, density, and viscosity experimentally and by thermodynamic modeling. The results show that the NADES under study have a water activity of about 0.4 at 37 °C for water contents between 14 and 22 wt %. The densities of the studied NADES had values between 1.2 and 1.3 g.cm-3 at 20 °C. The density was modeled with a state-of-the-art equation of state; an excellent agreement with the experimental density data was achieved, allowing reasonable predictions for water activities. The system betaine:glycerol (1:2) was found to be the most viscous with a dynamic viscosity of ∼600 mPa.s at 40 °C, while all the other systems had viscosities <350 mPa.s at 40 °C. The impact of the NADES on the enzymatic activity, as well as on, conformational and thermal stability was assessed. The system betaine/sorbitol:water (1:1:3) showed the highest benefit for enzymatic activity, increasing it by two-folds. Moreover, upon NADES addition, thermal stability was increased followed by an increment in a-helix secondary structure content.
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Affiliation(s)
- Nicolás
F. Gajardo-Parra
- Laboratory
of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Liane Meneses
- LAQV-REQUIMTE,
Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
| | - Ana Rita C. Duarte
- LAQV-REQUIMTE,
Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
| | - Alexandre Paiva
- LAQV-REQUIMTE,
Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
| | - Christoph Held
- Laboratory
of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
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21
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Keppler M, Moser S, Jessen HJ, Held C, Andexer JN. Make or break: the thermodynamic equilibrium of polyphosphate kinase-catalysed reactions. Beilstein J Org Chem 2022; 18:1278-1288. [PMID: 36225726 PMCID: PMC9520863 DOI: 10.3762/bjoc.18.134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/30/2022] [Indexed: 11/23/2022] Open
Abstract
Polyphosphate kinases (PPKs) have become popular biocatalysts for nucleotide 5'-triphosphate (NTP) synthesis and regeneration. Two unrelated families are described: PPK1 and PPK2. They are structurally unrelated and use different catalytic mechanisms. PPK1 enzymes prefer the usage of adenosine 5'-triphosphate (ATP) for polyphosphate (polyP) synthesis while PPK2 enzymes favour the reverse reaction. With the emerging use of PPK enzymes in biosynthesis, a deeper understanding of the enzymes and their thermodynamic reaction course is of need, especially in comparison to other kinases. Here, we tested four PPKs from different organisms under the same conditions without any coupling reactions. In comparison to other kinases using phosphate donors with comparably higher phosphate transfer potentials that are characterised by reaction yields close to full conversion, the PPK-catalysed reaction reaches an equilibrium in which about 30% ADP is left. These results were obtained for PPK1 and PPK2 enzymes, and are supported by theoretical data on the basic reaction. At high concentrations of substrate, the different kinetic preferences of PPK1 and PPK2 can be observed. The implications of these results for the application of PPKs in chemical synthesis and as enzymes for ATP regeneration systems are discussed.
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Affiliation(s)
- Michael Keppler
- Institute of Pharmaceutical Sciences, University of Freiburg, Albertstr. 25, 79104 Freiburg, Germany
| | - Sandra Moser
- Institute of Organic Chemistry, University of Freiburg, Albertstr. 21, 79104 Freiburg, Germany
| | - Henning J Jessen
- Institute of Organic Chemistry, University of Freiburg, Albertstr. 21, 79104 Freiburg, Germany
| | - Christoph Held
- Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Jennifer N Andexer
- Institute of Pharmaceutical Sciences, University of Freiburg, Albertstr. 25, 79104 Freiburg, Germany
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22
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Ruiz MB, Servetto N, Alurralde G, Abele D, Harms L, Sahade R, Held C. Molecular responses of a key Antarctic species to sedimentation due to rapid climate change. Mar Environ Res 2022; 180:105720. [PMID: 35987040 DOI: 10.1016/j.marenvres.2022.105720] [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: 04/08/2022] [Revised: 07/30/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Rapid regional warming causing glacial retreat and melting of ice caps in Antarctica leads benthic filter-feeders to be exposed to periods of food shortage and high respiratory impairment as a consequence of seasonal sediment discharge in the West Antarctic Peninsula coastal areas. The molecular physiological response and its fine-tuning allow species to survive acute environmental stress and are thus a prerequisite to longer-term adaptation to changing environments. Under experimental conditions, we analyzed here the metabolic response to changes in suspended sediment concentrations, through transcriptome sequencing and enzymatic measurements in a highly abundant Antarctic ascidian. We found that the mechanisms underlying short-term response to sedimentation in Cnemidocarpa verrucosa sp. A involved apoptosis, immune defense, and general metabolic depression. These mechanisms may be understood as an adaptive protection against sedimentation caused by glacial retreat. This process can strongly contribute to the structuring of future benthic filter-feeder communities in the face of climate change.
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Affiliation(s)
- Micaela B Ruiz
- Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Córdoba, Argentina; Universidad Nacional de Córdoba, Facultad de Ciencias Exactas Físicas y Naturales, Departamento de Diversidad Biológica y Ecología, Ecología Marina, Córdoba, Argentina.
| | - Natalia Servetto
- Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Córdoba, Argentina; Universidad Nacional de Córdoba, Facultad de Ciencias Exactas Físicas y Naturales, Departamento de Diversidad Biológica y Ecología, Ecología Marina, Córdoba, Argentina.
| | - Gastón Alurralde
- Department of Environmental Science, Stockholm University, Stockholm, Sweden.
| | - Doris Abele
- Alfred Wegener Institute Helmholtz-Zentrum für Polar- und Meeresforschung, Section Functional Ecology, Evolutionary Macroecology, Bremerhaven, Germany
| | - Lars Harms
- Alfred Wegener Institute Helmholtz-Zentrum für Polar- und Meeresforschung, Computing and data center, Data Science Support, Bremerhaven, Germany.
| | - Ricardo Sahade
- Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Córdoba, Argentina; Universidad Nacional de Córdoba, Facultad de Ciencias Exactas Físicas y Naturales, Departamento de Diversidad Biológica y Ecología, Ecología Marina, Córdoba, Argentina.
| | - Christoph Held
- Alfred Wegener Institute Helmholtz-Zentrum für Polar- und Meeresforschung, Section Functional Ecology, Evolutionary Macroecology, Bremerhaven, Germany.
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23
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Loll R, Runge L, Koop J, Held C, Schembecker G. Zickzack Packings for Deaeration in Rotating Packed Beds─Improved Rotor Design to Counter Bypass Flows. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01443] [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: 11/28/2022]
Affiliation(s)
- Rouven Loll
- Department of Biochemical and Chemical Engineering, Laboratory of Fluid Separations, TU Dortmund University, Emil-Figge-Straße 70, 44227 Dortmund, Germany
- Department of Biochemical and Chemical Engineering, Laboratory of Plant and Process Design, TU Dortmund University, Emil-Figge-Straße 70, 44227 Dortmund, Germany
| | - Leonie Runge
- Department of Biochemical and Chemical Engineering, Laboratory of Fluid Separations, TU Dortmund University, Emil-Figge-Straße 70, 44227 Dortmund, Germany
| | - Jörg Koop
- Department of Biochemical and Chemical Engineering, Laboratory of Plant and Process Design, TU Dortmund University, Emil-Figge-Straße 70, 44227 Dortmund, Germany
| | - Christoph Held
- Department of Biochemical and Chemical Engineering, Laboratory of Fluid Separations, TU Dortmund University, Emil-Figge-Straße 70, 44227 Dortmund, Germany
| | - Gerhard Schembecker
- Department of Biochemical and Chemical Engineering, Laboratory of Plant and Process Design, TU Dortmund University, Emil-Figge-Straße 70, 44227 Dortmund, Germany
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24
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Pabsch D, Lindfeld Data analysis J, Schwalm Data analysis J, Strangmann Data analysis A, Figiel P, Sadowski G, Held C. Influence of solvent and salt on kinetics and equilibrium of esterification reactions. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Ascani M, Pabsch D, Klinksiek M, Gajardo-Parra N, Sadowski G, Held C. Prediction of pH in multiphase multicomponent systems with ePC-SAFT advanced. Chem Commun (Camb) 2022; 58:8436-8439. [PMID: 35796637 DOI: 10.1039/d2cc02943j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Proton activity, which is usually expressed as a pH value, is among the most important properties in the design of chemical and biochemical processes as it determines the dissociation of species in aqueous mixtures. This article addresses the prediction of pH values in multiphase systems based on the IUPAC definition via proton activity. The required proton activity coefficients were predicted using the thermodynamic equation of state ePC-SAFT advanced. The developed framework considers reaction equilibria and phase equilibria (vapor-liquid and liquid-liquid) to predict pH in the equilibrated liquid phases.
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Affiliation(s)
- Moreno Ascani
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany.
| | - Daniel Pabsch
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany.
| | - Marcel Klinksiek
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany.
| | - Nicolás Gajardo-Parra
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany.
| | - Gabriele Sadowski
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany.
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany.
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26
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Arroyo-Avirama AF, Ormazábal-Latorre S, Jogi R, Gajardo-Parra NF, Pazo-Carballo C, Ascani M, Virtanen P, Garrido JM, Held C, Mäki-Arvela P, Canales RI. Improving the separation of guaiacol from n-hexane by adding choline chloride to glycol extracting agents. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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27
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Cea-Klapp E, Gajardo-Parra N, Aravena P, Quinteros-Lama H, Held C, Canales RI, Garrido JM. Interfacial Properties of Deep Eutectic Solvents by Density Gradient Theory. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03817] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Esteban Cea-Klapp
- Departamento de Ingeniería Química, Universidad de Concepción, Concepción 4070386, Chile
| | - Nicolás Gajardo-Parra
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund, Emil-Figge-Strasse 70, 44227 Dortmund, Germany
| | - Paulo Aravena
- Departamento de Ingeniería Química y Bioprocesos, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago 7820244, Chile
| | - Héctor Quinteros-Lama
- Departamento de Tecnologías Industriales, Faculty of Engineering, Universidad de Talca, Merced 437, Curicó 3340000, Chile
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund, Emil-Figge-Strasse 70, 44227 Dortmund, Germany
| | - Roberto I. Canales
- Departamento de Ingeniería Química y Bioprocesos, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago 7820244, Chile
| | - José Matías Garrido
- Departamento de Ingeniería Química, Universidad de Concepción, Concepción 4070386, Chile
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28
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Gajardo-Parra N, Akrofi-Mantey HO, Ascani M, Cea-Klapp E, Garrido JM, Sadowski G, Held C. Osmolyte Effect on Enzymatic Stability and Reaction Equilibrium of Formate Dehydrogenase. Phys Chem Chem Phys 2022; 24:27930-27939. [DOI: 10.1039/d2cp04011e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Osmolytes are well-known biocatalyst stabilisers as they promote the folded state of proteins, and a stabilised biocatalyst might also improve reaction kinetics. In this work, the influence of four osmolytes...
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29
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de Aranzamendi MC, Martínez JJ, Held C, Sahade R. Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? ZOOLOGY 2021; 150:125983. [PMID: 34915245 DOI: 10.1016/j.zool.2021.125983] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/23/2021] [Accepted: 11/23/2021] [Indexed: 10/19/2022]
Abstract
Parallel phenotypic divergence is the independent differentiation between phenotypes of the same lineage or species occupying ecologically similar environments in different populations. We tested in the Antarctic limpet Nacella concinna the extent of parallel morphological divergence in littoral and sublittoral ecotypes throughout its distribution range. These ecotypes differ in morphological, behavioural and physiological characteristics. We studied the lateral and dorsal outlines of shells and the genetic variation of the mitochondrial gene Cytochrome Oxidase subunit I from both ecotypes in 17 sample sites along more than 2,000 km. The genetic data indicate that both ecotypes belong to a single evolutionary lineage. The magnitude and direction of phenotypic variation differ between ecotypes across sample sites; completely parallel ecotype-pairs (i.e., they diverge in the same magnitude and in the same direction) were detected in 84.85% of lateral and 65.15% in dorsal view comparisons. Besides, specific traits (relative shell height, position of shell apex, and elliptical/pear-shape outline variation) showed high parallelism. We observed weak morphological covariation between the two shape shell views, indicating that distinct evolutionary forces and environmental pressures could be acting on this limpet shell shape. Our results demonstrate there is a strong parallel morphological divergence pattern in N. concinna along its distribution, making this Antarctic species a suitable model for the study of different evolutionary forces shaping the shell evolution of this limpet.
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Affiliation(s)
- María Carla de Aranzamendi
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Cátedra de Ecología Marina, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos y Polares (ECOMARES), Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina.
| | - Juan José Martínez
- Laboratorio de Ecología Evolutiva y Biogeografía, Instituto de Ecorregiones Andinas (INECOA), CONICET and Universidad Nacional de Jujuy, C. Gorriti 237, San Salvador de Jujuy, 4600, Argentina.
| | - Christoph Held
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, D-27570 Bremerhaven, Germany.
| | - Ricardo Sahade
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Cátedra de Ecología Marina, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos y Polares (ECOMARES), Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina.
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30
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Ogmundsdottir Michelsen H, Henriksson P, Wallert J, Back M, Sjolin I, Schlyter M, Hagstrom E, Kiessling A, Held C, Hag E, Nilsson L, Schiopu A, Zaman MJ, Leosdottir M. Organizational and patient-level predictors for reaching key risk factor targets in cardiac rehabilitation after myocardial infarction – the perfect-CR study. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The benefits of specific cardiac rehabilitation (CR) programme components on patient outcomes after myocardial infarction (MI) remain unclear, as does their relative predictive strength compared to patient-level predictors.
Purpose
To identify CR organizational and patient-level predictors for reaching risk factor targets at one-year post-MI.
Methods
This was an observational survey- and registry-based study. Data on CR organization at all 78 CR centres in Sweden was collected in 2016 and merged with individual patient data from nationwide registries (n=7549, median age 64 years, 24% females). Cross-validation resampled orthogonal partial least squares discriminant analysis identified predictors for reaching treatment targets for low-density lipoprotein-cholesterol (LDL-C<1.8 mmol/L), blood pressure (BP<140/90 mmHg) and smoking abstinence (yes/no). Predictors with Variables of Importance for the Projection (VIP) value >0.8 and 95% confidence intervals (CI) excluding zero, were considered meaningful.
Results
Of the 71 analysed organizational variables, 36 were identified as meaningful predictors for reaching LDL-C and 35 for BP targets (Figure 1). The strongest predictors (VIP [95% CI]) for LDL-C and BP were: offering psychosocial management at initial CR assessment 2.09 [1.70–2.49]; 2.34 [1.90–2.78], having a CR team psychologist 1.59 [1.28–1.91]; 2.00 [1.46–2.55], having extended CR centre opening hours 2.17 [1.95–2.40]; 1.51 [1.03–2.00], staff reporting satisfaction with CR centre facilities 1.55 [1.07–2.04]; 1.96 [1.64–2.28], having a medical director 1.71 [1.45–1.97]; 1.47 [1.07–1.87], nurses using protocols for antihypertensive and/or lipid lowering medication adjustment 1.58 [1.35–1.81]; 1.56 [1.03–2.08], having operational team meetings 1.36 [1.08–1.64]; 1.34 [0.99–1.70], and using audit data for quality improvement 1.00 [0.79–1.20]; 1.27 [0.99–1.56]. Offering pre-exercise-based CR (exCR) assessment and different modes of exCR were predictors for reaching both targets. The strongest patient-level predictor of reaching LDL-C target was low baseline LDL-C 3.90 [3.25–4.56], and for BP it was having no history of hypertension 2.93 [2.74–3.12]. Second, participation in exCR was the strongest predictor for both outcomes 1.60 [0.83–2.37]; 1.50 [1.15–1.86]. For smoking abstinence, 5 organizational variables were identified as meaningful predictors, the strongest being prescription of varenicline by the centre physicians 1.98 [0.13–3.84] (Figure 2). The strongest patient-level predictors were exCR participation 2.51 [2.24–2.79] and socioeconomic status variables e.g., income 1.67 [1.28–2.06], living with partner 1.47 [0.84–2.09] and education 0.80 [0.48–1.12].
Conclusion
The study identified multiple CR organizational and patient-level predictors for reaching key risk factor targets one-year post-MI. The results might contribute to defining the optimal composition of comprehensive CR programmes.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): 1) The Swedish Research Council for Health, Working Life and Welfare (FORTE)2) The Swedish Heart and Lung Foundation (Hjärt Lung Fonden)
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Affiliation(s)
| | - P Henriksson
- Karolinska Institute, Department of Clinical Sciences Danderyd Hospital, Stockholm, Sweden
| | - J Wallert
- Karolinska Institute, Centre for Psychiatry Research, Department of Clinical Neuroscience, Stockholm, Sweden
| | - M Back
- Sahlgrenska University Hospital, Department of Occupational therapy and Physiotherapy, Gothenburg, Sweden
| | - I Sjolin
- Skane University Hospital, Department of Cardiology, Malmo, Sweden
| | - M Schlyter
- Skane University Hospital, Department of Cardiology, Malmo, Sweden
| | - E Hagstrom
- Uppsala University, Department of Medical Sciences, Cardiology and Uppsala Clinical Research Centre, Uppsala, Sweden
| | - A Kiessling
- Karolinska Institute, Department of Clinical Sciences Danderyd Hospital, Stockholm, Sweden
| | - C Held
- Uppsala University, Department of Medical Sciences, Cardiology and Uppsala Clinical Research Centre, Uppsala, Sweden
| | - E Hag
- Ryhov County Hospital, Department of Internal Medicine, Jonkoping, Sweden
| | - L Nilsson
- Linkoping University, Department of Health Medicine and Caring Sciences, Linkoping, Sweden
| | - A Schiopu
- Lund University, Department of Clinical Sciences, Malmo, Sweden
| | - M J Zaman
- James Paget Hospitals, Department of Cardiology, Norfolk, United Kingdom
| | - M Leosdottir
- Skane University Hospital, Department of Cardiology, Malmo, Sweden
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31
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Barnes DKA, Sands CJ, Paulsen ML, Moreno B, Moreau C, Held C, Downey R, Bax N, Stark JS, Zwerschke N. Correction to: Societal importance of Antarctic negative feedbacks on climate change: blue carbon gains from sea ice, ice shelf and glacier losses. Naturwissenschaften 2021; 108:51. [PMID: 34633554 DOI: 10.1007/s00114-021-01759-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - C J Sands
- British Antarctic Survey, NERC, Cambridge, UK
| | | | - B Moreno
- Universidad Científica del Sur, Lima, Peru
| | - C Moreau
- Université Libre de Bruxelles, Brussels, Belgium
| | - C Held
- Alfred Wegner Institute, Bremerhaven, Germany
| | - R Downey
- Australian National University, Canberra, Australia
| | - N Bax
- South Atlantic Environmental Research Institute, Stanley, South Atlantic, Falkland Islands
| | - J S Stark
- Australian Antarctic Division, Hobart, Australia
| | - N Zwerschke
- British Antarctic Survey, NERC, Cambridge, UK
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Dégletagne C, Abele D, Glöckner G, Alric B, Gruber H, Held C. Presence of male mitochondria in somatic tissues and their functional importance at the whole animal level in the marine bivalve Arctica islandica. Commun Biol 2021; 4:1104. [PMID: 34545198 PMCID: PMC8452683 DOI: 10.1038/s42003-021-02593-1] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 08/16/2021] [Indexed: 02/08/2023] Open
Abstract
Metazoans normally possess a single lineage of mitochondria inherited from the mother (♀-type mitochondria) while paternal mitochondria are absent or eliminated in fertilized eggs. In doubly uniparental inheritance (DUI), which is specific to the bivalve clade including the ocean quahog, Arctica islandica, ♂-type mitochondria are retained in male gonads and, in a few species, small proportions of ♂-type mitochondria co-exist with ♀-type in somatic tissues. To the best of our knowledge, we report, for the first time in metazoan, the natural occurrence of male and female individuals with exclusively ♂-type mitochondria in somatic tissues of the bivalve A. islandica. Mitochondrial genomes differ by ~5.5% at DNA sequence level. Exclusive presence of ♂-type mitochondria affects mitochondrial complexes partially encoded by mitochondrial genes and leads to a sharp drop in respiratory capacity. Through a combination of whole mitochondrial genome sequencing and molecular assays (gene presence and expression), we demonstrate that 1) 11% of individuals of an Icelandic population appear homoplasmic for ♂-type mitochondria in somatic tissues, 2) ♂-type mitochondrial genes are transcribed and 3) individuals with ♂-type mitochondria in somatic cells lose 30% of their wild-type respiratory capacity. This mitochondrial pattern in A. islandica is a special case of DUI, highlighted in individuals from both sexes with functional consequences at cellular and conceivably whole animal level.
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Affiliation(s)
- Cyril Dégletagne
- grid.10894.340000 0001 1033 7684Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany ,grid.7849.20000 0001 2150 7757Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, Villeurbanne, France
| | - Doris Abele
- grid.10894.340000 0001 1033 7684Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Gernot Glöckner
- grid.6190.e0000 0000 8580 3777Institute for Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
| | - Benjamin Alric
- grid.7849.20000 0001 2150 7757Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, Villeurbanne, France
| | - Heike Gruber
- grid.419520.b0000 0001 2222 4708Max Planck Institute for Evolutionary Biology, Department of Evolutionary Theory, Plön, Germany
| | - Christoph Held
- grid.10894.340000 0001 1033 7684Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
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33
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Olszowka M, Held C, Hadziosmanovic N, Denchev S, Manolis A, Wallentin L, White HD, Stewart RAH, Hagström E. Excessive daytime sleepiness, morning tiredness and major adverse cardiovascular events in patients with chronic coronary syndrome. J Intern Med 2021; 290:392-403. [PMID: 33971052 DOI: 10.1111/joim.13294] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 01/29/2021] [Accepted: 02/23/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Sleep-related breathing disorders (SRBDs), particularly obstructive sleep apnoea, are associated with increased cardiovascular (CV) risk. However, it is not known whether individual questions used for SRBD screening are associated with major adverse CV events (MACE) and death specifically in patients with chronic coronary syndrome (CCS). METHODS Symptoms associated with SRBD were assessed by a baseline questionnaire in 15,640 patients with CCS on optimal secondary preventive therapy in the STABILITY trial. The patients reported the frequency (never/rarely, sometimes, often and always) of: 1) loud snoring; 2) more than one awakening/night; 3) morning tiredness (MT); 4) excessive daytime sleepiness (EDS); or 5) gasping, choking or apnoea when asleep. In adjusted Cox regression models, associations between the frequency of SRBD symptoms and CV outcomes were assessed with never/rarely as reference. RESULTS During a median follow-up time of 3.7 years, 1,588 MACE events (541 CV deaths, 749 nonfatal myocardial infarctions [MI] and 298 nonfatal strokes) occurred. EDS was associated (hazard ratio [HR], 95% confidence interval [CI]) with increased risk of MACE (sometimes 1.14 [1.01-1.29], often 1.19 [1.01-1.40] and always 1.43 [1.15-1.78]), MI (always 1.61 [1.17-2.20]) and all-cause death (often 1.26 [1.05-1.52] and always 1.71 [1.35-2.15]). MT was associated with higher risk of MACE (often 1.23 [1.04-1.45] and always 1.46 [1.18-1.81]), MI (always 1.61 [1.22-2.14]) and all-cause death (always 1.54 [1.20-1.98]). The other SRBD-related questions were not consistently associated with worse outcomes. CONCLUSIONS In patients with CCS, gradually higher levels of EDS and MT were independently associated with increased risk of MACE, including mortality.
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Affiliation(s)
- M Olszowka
- From the, Uppsala Clinical Research Centre, Uppsala University, Uppsala, Sweden.,Department of Medical Sciences, Cardiology, Uppsala University, Uppsala, Sweden
| | - C Held
- From the, Uppsala Clinical Research Centre, Uppsala University, Uppsala, Sweden.,Department of Medical Sciences, Cardiology, Uppsala University, Uppsala, Sweden
| | - N Hadziosmanovic
- From the, Uppsala Clinical Research Centre, Uppsala University, Uppsala, Sweden
| | - S Denchev
- Medical Institute of Ministry of Interior, Sofia, Bulgaria
| | - A Manolis
- Cardiology Department, Asklepeion Hospital, Athens, Greece
| | - L Wallentin
- From the, Uppsala Clinical Research Centre, Uppsala University, Uppsala, Sweden.,Department of Medical Sciences, Cardiology, Uppsala University, Uppsala, Sweden
| | - H D White
- Green Lane Cardiovascular Service, Auckland City Hospital and University of Auckland, Auckland, New Zealand
| | - R A H Stewart
- Green Lane Cardiovascular Service, Auckland City Hospital and University of Auckland, Auckland, New Zealand
| | - E Hagström
- From the, Uppsala Clinical Research Centre, Uppsala University, Uppsala, Sweden.,Department of Medical Sciences, Cardiology, Uppsala University, Uppsala, Sweden
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Servetto N, de Aranzamendi MC, Bettencourt R, Held C, Abele D, Movilla J, González G, Bustos DM, Sahade R. Molecular mechanisms underlying responses of the Antarctic coral Malacobelemnon daytoni to ocean acidification. Mar Environ Res 2021; 170:105430. [PMID: 34340030 DOI: 10.1016/j.marenvres.2021.105430] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 11/05/2020] [Revised: 07/15/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
Benthic organisms of the Southern Ocean are particularly vulnerable to ocean acidification (OA), as they inhabit cold waters where calcite-aragonite saturation states are naturally low. OA most strongly affects animals with calcium carbonate skeletons or shells, such as corals and mollusks. We exposed the abundant cold-water coral Malacobelemnon daytoni from an Antarctic fjord to low pH seawater (LpH) (7.68 ± 0.17) to test its physiological responses to OA, at the level of gene expression (RT-PCR) and enzyme activity. Corals were exposed in short- (3 days) and long-term (54 days) experiments to two pCO2 conditions (ambient and elevated pCO2 equaling RCP 8.5, IPCC 2019, approximately 372.53 and 956.78 μatm, respectively). Of the eleven genes studied through RT-PCR, six were significantly upregulated compared with control in the short-term in the LpH condition, including the antioxidant enzyme superoxide dismutase (SOD), Heat Shock Protein 70 (HSP70), Toll-like receptor (TLR), galaxin and ferritin. After long-term exposure to low pH conditions, RT-PCR analysis showed seven genes were upregulated. These include the mannose-binding C-Lectin and HSP90. Also, the expression of TLR and galaxin, among others, continued to be upregulated after long-term exposure to LpH. Expression of carbonic anhydrase (CA), a key enzyme involved in calcification, was also significantly upregulated after long-term exposure. Our results indicated that, after two months, M. daytoni is not acclimatized to this experimental LpH condition. Gene expression profiles revealed molecular impacts that were not evident at the enzyme activity level. Consequently, understanding the molecular mechanisms behind the physiological processes in the response of a coral to LpH is critical to understanding the ability of polar species to cope with future environmental changes. Approaches integrating molecular tools into Antarctic ecological and/or conservation research make an essential contribution given the current ongoing OA processes.
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Affiliation(s)
- N Servetto
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales.,Cátedra de Ecología Marina, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos Polares, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina.
| | - M C de Aranzamendi
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales.,Cátedra de Ecología Marina, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos Polares, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina
| | - R Bettencourt
- OKEANOS Marine Research Center/Department of Oceanography and Fisheries, Faculty of Science and Technology, University of the Azores, 9900-862, Horta, Portugal
| | - C Held
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - D Abele
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - J Movilla
- Instituto Español de Oceanografía, Centro Oceanográfico de Baleares, Estación de Investigación Jaume Ferrer, La Mola s/n 07720, Menorca, Spain
| | - G González
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales.,Cátedra de Ecología Marina, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos Polares, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina
| | - D M Bustos
- Laboratorio de Integración de Señales Celulares, Instituto de Histología y Embriología de Mendoza (IHEM CONICET-UNCUYO), and Facultad de Ciencias Exactas y Naturales (UNCUYO), Mendoza, Argentina
| | - R Sahade
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales.,Cátedra de Ecología Marina, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos Polares, Av. Vélez Sarsfield 299, X5000JJC, Córdoba, Argentina.
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Ascani M, Held C. Prediction of salting‐out in liquid‐liquid two‐phase systems with ePC‐SAFT: Effect of the Born term and of a concentration‐dependent dielectric constant. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100032] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Moreno Ascani
- Laboratory of Thermodynamics Department of Biochemical and Chemical Engineering TU Dortmund University Emil-Figge Str. 70 44277 Dortmund Germany
| | - Christoph Held
- Laboratory of Thermodynamics Department of Biochemical and Chemical Engineering TU Dortmund University Emil-Figge Str. 70 44277 Dortmund Germany
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Do HT, Franke P, Volpert S, Klinksiek M, Thome M, Held C. Measurement and modelling solubility of amino acids and peptides in aqueous 2-propanol solutions. Phys Chem Chem Phys 2021; 23:10852-10863. [PMID: 33908485 DOI: 10.1039/d1cp00005e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Amino acids and peptides are essential components in the biochemical industry. The final products are employed in a wide range of applications and are often synthesized by fermentation and purified in a complex downstream process. One possible separation step is using an additional solvent to lower the solubility of the desired product and, thus, promote the crystallization of the particular component. Therefore, it is crucial to have accurate knowledge of the solubility of these components. In this work, the solubilities of 20 proteinogenic amino acids and 21 peptides in aqueous 2-propanol solutions were gravimetrically determined. Additionally, the pH values of the saturated liquid phases were measured and the crystal structures of solid crystals were analysed using X-ray diffraction. The anti-solvent 2-propanol caused a decrease in the solubilities of the amino acids and peptides upon increasing its mass fraction. Exceptions were found for amino acids with aromatic substituents, l-phenylalanine and l-tyrosine. The solubility of 15 amino acids and 18 peptides was successfully modelled using the equation of state PC-SAFT that used recently determined melting properties of the amino acids and peptides as input data.
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Affiliation(s)
- Hoang Tam Do
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany.
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Bülow M, Gerek Ince N, Hirohama S, Sadowski G, Held C. Predicting Vapor–Liquid Equilibria for Sour-Gas Absorption in Aqueous Mixtures of Chemical and Physical Solvents or Ionic Liquids with ePC-SAFT. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00176] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mark Bülow
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge Str. 70, 44277 Dortmund, Germany
| | | | | | - Gabriele Sadowski
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge Str. 70, 44277 Dortmund, Germany
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge Str. 70, 44277 Dortmund, Germany
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38
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Roda A, Santos F, Chua YZ, Kumar A, Do HT, Paiva A, Duarte ARC, Held C. Unravelling the nature of citric acid:L-arginine:water mixtures: the bifunctional role of water. Phys Chem Chem Phys 2021; 23:1706-1717. [PMID: 33427255 DOI: 10.1039/d0cp04992a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The use of water as a component of deep eutectic systems (DES) has raised some questions regarding its influence on the nature of the mixture. Does it form a DES or an aqueous solution and what is the role of water? In this work, the nature of citric acid:l-arginine:water mixtures was explored through phase equilibria studies and spectroscopic analysis. In a first step, PC-SAFT was validated as a predictive tool to model the water influence on the solid liquid equilibria (SLE) of the DES reline using the individual-component approach. Hence, activity coefficients in the ternary systems citric acid:l-arginine:water and respective binary combinations were studied and compared using ePC-SAFT. It was observed that the water-free mixtures citric acid:l-arginine showed positive deviation from Raoult's law, while upon addition of water strong negative deviation from Raoult's law was found, yielding melting depressions around 100 K. Besides these strong interactions, pH was found to become acidic (pH = 3.5) upon water addition, which yields the formation of charged species ([H2Cit]- and [l-arg]+). Thus, the increased interactions between the molecules upon water addition might be caused by several mechanisms such as hydrogen bonding or ionic forces, both being induced by water. For further investigation, the liquid mixtures citric acid:l-arginine:water were studied by FTIR and NMR spectroscopy. FTIR spectra disproved a possible solubility enhancement caused by salt formation between citric acid and l-arginine, while NMR spectra supported the formation of a hydrogen bonding network different from the binary systems citric acid:water and l-arginine:water. Either being a DES or other type of non-ideal solution, the liquefaction of the studied systems is certainly caused by a water-mediator effect based on the formation of charged species and cross interactions between the mixture constituents.
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Affiliation(s)
- Ana Roda
- LAQV, REQUIMTE, Departamento de Química da Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Filipa Santos
- LAQV, REQUIMTE, Departamento de Química da Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Yeong Zen Chua
- Institute of Physics, University of Rostock, Albert-Einstein-Str. 23-24, 18051 Rostock, Germany
| | - Aarti Kumar
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund, 44227 Dortmund, Germany.
| | - Hoang Tam Do
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund, 44227 Dortmund, Germany.
| | - Alexandre Paiva
- LAQV, REQUIMTE, Departamento de Química da Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Ana Rita C Duarte
- LAQV, REQUIMTE, Departamento de Química da Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund, 44227 Dortmund, Germany.
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Do HT, Chua YZ, Habicht J, Klinksiek M, Volpert S, Hallermann M, Thome M, Pabsch D, Zaitsau D, Schick C, Held C. Melting Properties of Peptides and Their Solubility in Water. Part 2: Di- and Tripeptides Based on Glycine, Alanine, Leucine, Proline, and Serine. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05652] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hoang Tam Do
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, Dortmund 44227, Germany
| | - Yeong Zen Chua
- Institute of Physics, University of Rostock, Albert-Einstein-Str. 23-24, Rostock 18051, Germany
- Competence Centre CALOR, University of Rostock, Albert-Einstein-Str. 25, Rostock 18051, Germany
| | - Jonas Habicht
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, Dortmund 44227, Germany
| | - Marcel Klinksiek
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, Dortmund 44227, Germany
| | - Sophia Volpert
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, Dortmund 44227, Germany
| | - Moritz Hallermann
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, Dortmund 44227, Germany
| | - Max Thome
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, Dortmund 44227, Germany
| | - Daniel Pabsch
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, Dortmund 44227, Germany
| | - Dzmitry Zaitsau
- Competence Centre CALOR, University of Rostock, Albert-Einstein-Str. 25, Rostock 18051, Germany
- Institute of Chemistry, University of Rostock, Dr-Lorenz-Weg 2, Rostock 18051, Germany
| | - Christoph Schick
- Institute of Physics, University of Rostock, Albert-Einstein-Str. 23-24, Rostock 18051, Germany
- Competence Centre CALOR, University of Rostock, Albert-Einstein-Str. 25, Rostock 18051, Germany
- Chemical Institute A. M. Butlerov, Kazan Federal University, 18 Kremlyovskaya Street, Kazan 420008, Russian Federation
| | - Christoph Held
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, Dortmund 44227, Germany
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Bülow M, Greive M, Zaitsau DH, Verevkin SP, Held C. Extremely Low Vapor-Pressure Data as Access to PC-SAFT Parameter Estimation for Ionic Liquids and Modeling of Precursor Solubility in Ionic Liquids. ChemistryOpen 2021; 10:216-226. [PMID: 33492786 PMCID: PMC7874510 DOI: 10.1002/open.202000258] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/05/2020] [Indexed: 11/29/2022] Open
Abstract
Precursor solubility is a crucial factor in industrial applications, dominating the outcome of reactions and purification steps. The outcome and success of thermodynamic modelling of this industrially important property with equations of states, such as Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT), vastly depends on the quality of the pure-component parameters. The pure-component parameters for low-volatile compounds such as ionic liquids (ILs) have been commonly estimated using mixture properties, e. g. the osmotic pressure of aqueous solutions. This leads to parameters that depend on the solvent, and transferability to other mixtures often causes poor modeling results. Mixture-independent experimental properties would be a more suitable basis for the parameter estimation offering a way to universal parameter sets. Model parameters for ILs are available in the literature [10.1016/j.fluid.2012.05.029], but they were estimated using pure-IL density data. The present work focuses on a step towards a more universal estimation strategy that includes new experimental vapor-pressure data of the pure IL. ILs exhibit an almost negligible vapor pressure in magnitude of usually 10-5 Pa even at elevated temperatures. In this work, such vapor-pressure data of a series of 1-ethyl-3-methyl-imidazolium-based [C2 mim]-ILs with various IL-anions (e. g. tetrafluoroborate [BF4 ]- , hexafluorophosphate [PF6 ]- , bis(trifluoromethylsulfonyl)imide [NTf2 ]- ) were experimentally determined and subsequently used for PC-SAFT parameter estimation. The so-determined parameters were used to predict experimental molecular precursor solubility in ILs and infinitely diluted activity coefficients of various solvents in ILs. The parameters were further compared to modeling results using classical parametrization methods (use of liquid-density data only for the molecular PC-SAFT and the ion-based electrolyte PC-SAFT). As a result, the modeled precursor solubilities using the new approach are much more precise than using the classical parametrization methods, and required binary parameters were found to be much smaller (if needed). In sum, including the pure-component vapor-pressure data of ILs opens the door towards parameter estimation that is not biased by mixture data. This procedure might be suitable also for polymers and for all kind of ionic species but needs extension to ion-specific parametrization in the long term.
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Affiliation(s)
- Mark Bülow
- Laboratory of ThermodynamicsDepartment of Biochemical and Chemical EngineeringTU DortmundEmil-Figge Str. 7044277DortmundGermany
| | - Moritz Greive
- Laboratory of ThermodynamicsDepartment of Biochemical and Chemical EngineeringTU DortmundEmil-Figge Str. 7044277DortmundGermany
| | - Dzmitry H. Zaitsau
- Department of Physical ChemistryUniversity of Rostock18059RostockGermany
| | - Sergey P. Verevkin
- Department of Physical ChemistryUniversity of Rostock18059RostockGermany
- Department of Physical ChemistryKazan Federal University420008KazanRussia
| | - Christoph Held
- Laboratory of ThermodynamicsDepartment of Biochemical and Chemical EngineeringTU DortmundEmil-Figge Str. 7044277DortmundGermany
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Capecci S, Wang Y, Casson Moreno V, Held C, Leveneur S. Solvent effect on the kinetics of the hydrogenation of n-butyl levulinate to γ-valerolactone. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116315] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Zaitsau DH, Siewert R, Pimerzin AA, Bülow M, Held C, Loor M, Schulz S, Verevkin SP. From volatility to solubility: Thermodynamics of imidazolium-based ionic liquids containing chloride and bromide anions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114998] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Schmitz A, Bülow M, Schmidt D, Zaitsau DH, Junglas F, Knedel T, Verevkin SP, Held C, Janiak C. Tetrahydrothiophene-Based Ionic Liquids: Synthesis and Thermodynamic Characterizations. ChemistryOpen 2021; 10:153-163. [PMID: 33354944 PMCID: PMC7874261 DOI: 10.1002/open.202000228] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/13/2020] [Indexed: 11/09/2022] Open
Abstract
S-alkyltetrahydrothiophenium, [Cn THT]+ bis(trifluorosulfonyl)imide, [NTf2 ]- room temperature ionic liquids (ILs) and tetraphenylborate, [BPh4 ]- salts with alkyl chain lengths from C4 to C10 have been prepared. The ILs and salts were characterized and their purity verified by 1 H- and 13 C-nuclear magnetic resonance, elemental analysis, ion chromatography, Karl-Fischer titration, single crystal X-ray diffraction as well as thermogravimetric analysis. The experimentally determined density and viscosity decrease with increasing temperature. The experimental solubility of the [Cn THT][NTf2 ]-ILs in water (75 to 2.2 mg/L for C4 to C10 ) was modelled with very good agreement by Perturbed Chain Statistical Associating Fluid Theory (PC-SAFT), based on the extremely low vapor pressures for the [Cn THT][NTf2 ]-ILs measured in this work (4.15 to 0.037 ⋅ 10-7 ×psat for C4 to C10 ). PC-SAFT is able to predict and correlate different thermodynamic properties by estimating the Helmholtz residual energy.
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Affiliation(s)
- Alexa Schmitz
- Institut für Anorganische Chemie und StrukturchemieHeinrich-Heine-Universität Düsseldorf40204DüsseldorfGermany
| | - Mark Bülow
- Laboratory of ThermodynamicsTechnische Universität Dortmund44227DortmundGermany
| | - Dana Schmidt
- Institut für Anorganische Chemie und StrukturchemieHeinrich-Heine-Universität Düsseldorf40204DüsseldorfGermany
| | - Dzmitry H. Zaitsau
- Department of Physical ChemistryUniversity of Rostock18059RostockGermany
- Competence Centre CALORFaculty of Interdisciplinary ResearchUniversity of Rostock18059RostockGermany
| | - Fabian Junglas
- Institut für Anorganische Chemie und StrukturchemieHeinrich-Heine-Universität Düsseldorf40204DüsseldorfGermany
| | - Tim‐Oliver Knedel
- Institut für Anorganische Chemie und StrukturchemieHeinrich-Heine-Universität Düsseldorf40204DüsseldorfGermany
| | - Sergey P. Verevkin
- Department of Physical ChemistryUniversity of Rostock18059RostockGermany
- Competence Centre CALORFaculty of Interdisciplinary ResearchUniversity of Rostock18059RostockGermany
| | - Christoph Held
- Laboratory of ThermodynamicsTechnische Universität Dortmund44227DortmundGermany
| | - Christoph Janiak
- Institut für Anorganische Chemie und StrukturchemieHeinrich-Heine-Universität Düsseldorf40204DüsseldorfGermany
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Bax N, Sands CJ, Gogarty B, Downey RV, Moreau CVE, Moreno B, Held C, Paulsen ML, McGee J, Haward M, Barnes DKA. Perspective: Increasing blue carbon around Antarctica is an ecosystem service of considerable societal and economic value worth protecting. Glob Chang Biol 2021; 27:5-12. [PMID: 33064891 DOI: 10.1111/gcb.15392] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 04/17/2020] [Accepted: 09/24/2020] [Indexed: 05/21/2023]
Abstract
Precautionary conservation and cooperative global governance are needed to protect Antarctic blue carbon: the world's largest increasing natural form of carbon storage with high sequestration potential. As patterns of ice loss around Antarctica become more uniform, there is an underlying increase in carbon capture-to-storage-to-sequestration on the seafloor. The amount of carbon captured per unit area is increasing and the area available to blue carbon is also increasing. Carbon sequestration could further increase under moderate (+1°C) ocean warming, contrary to decreasing global blue carbon stocks elsewhere. For example, in warmer waters, mangroves and seagrasses are in decline and benthic organisms are close to their physiological limits, so a 1°C increase in water temperature could push them above their thermal tolerance (e.g. bleaching of coral reefs). In contrast, on the basis of past change and current research, we expect that Antarctic blue carbon could increase by orders of magnitude. The Antarctic seafloor is biophysically unique and the site of carbon sequestration, the benthos, faces less anthropogenic disturbance than any other ocean continental shelf environment. This isolation imparts both vulnerability to change, and an avenue to conserve one of the world's last biodiversity refuges. In economic terms, the value of Antarctic blue carbon is estimated at between £0.65 and £1.76 billion (~2.27 billion USD) for sequestered carbon in the benthos around the continental shelf. To balance biodiversity protection against society's economic objectives, this paper builds on a proposal incentivising protection by building a 'non-market framework' via the 2015 Paris Agreement to the United Nations Framework Convention on Climate Change. This could be connected and coordinated through the Antarctic Treaty System to promote and motivate member states to value Antarctic blue carbon and maintain scientific integrity and conservation for the positive societal values ingrained in the Antarctic Treaty System.
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Affiliation(s)
- Narissa Bax
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tas., Australia
| | | | - Brendan Gogarty
- Faculty of Law, University of Tasmania, Hobart, Tas., Australia
| | | | | | | | | | | | - Jeffrey McGee
- Faculty of Law, University of Tasmania, Hobart, Tas., Australia
| | - Marcus Haward
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tas., Australia
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Claeys MJ, Roubille F, Casella G, Zukermann R, Nikolaou N, De Luca L, Gierlotka M, Iakobishvili Z, Thiele H, Koutouzis M, Sionis A, Monteiro S, Beauloye C, Held C, Tint D, Zakke I, Serpytis P, Babic Z, Belohlavev J, Magdy A, Sivagowry Rasalingam M, Daly K, Arroyo D, Vavlukis M, Radovanovic N, Trendafilova E, Marandi T, Hassenger C, Lettino M, Price S, Bonnefoy E. Organization of intensive cardiac care units in Europe: Results of a multinational survey. European Heart Journal. Acute Cardiovascular Care 2020; 9:993-1001. [DOI: 10.1177/2048872619883997] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background:
The present survey aims to describe the intensive cardiac care unit organization and admission policies in Europe.
Methods:
A total of 228 hospitals (61% academic) from 27 countries participated in this survey. In addition to the organizational aspects of the intensive cardiac care units, including classification of the intensive cardiac care unit levels, data on the admission diagnoses were gathered from consecutive patients who were admitted during a two-day period. Admission policies were evaluated by comparing illness severity with the intensive cardiac care unit level. Gross national income was used to differentiate high-income countries (n=13) from middle-income countries (n=14).
Results:
A total of 98% of the hospitals had an intensive cardiac care unit: 70% had a level 1 intensive cardiac care unit, 76% had a level 2 intensive cardiac care unit, 51% had a level 3 intensive cardiac care unit, and 60% of the hospitals had more than one intensive cardiac care unit level. High-income countries tended to have more level 3 intensive cardiac care units than middle-income countries (55% versus 41%, p=0.07). A total of 5159 admissions were scored on illness severity: 63% were low severity, 24% were intermediate severity, and 12% were high severity. Patients with low illness severity were predominantly admitted to level 1 intensive cardiac care units, whereas patients with high illness severity were predominantly admitted to level 2 and 3 intensive cardiac care units. A policy mismatch was observed in 12% of the patients; some patients with high illness severity were admitted to level 1 intensive cardiac care units, which occurred more often in middle-income countries, whereas some patients with low illness severity were admitted to level 3 intensive cardiac care units, which occurred more frequently in high-income countries.
Conclusion:
More than one-third of the admitted patients were considered intermediate or high risk. Although patients with higher illness severity were mostly admitted to high-level intensive cardiac care units, an admission policy mismatch was observed in 12% of the patients; this mismatch was partly related to insufficient logistic intensive cardiac care unit capacity.
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Affiliation(s)
- MJ Claeys
- Department of Cardiology, Antwerp University Hospital, Belgium
| | - F Roubille
- Department of Cardiology, University Hospital of Montpellier, France
| | - G Casella
- Department of Cardiology, Ospedale Maggiore, Italy
| | | | - N Nikolaou
- Department of Cardiology, Konstantopouleio General Hospital, Greece
| | - L De Luca
- Department of Cardiology, S. Giovanni Evangelista Hospital, Italy
| | - M Gierlotka
- Department of Cardiology, University of Opole, Poland
| | | | - H Thiele
- Heart Center Leipzig, University Hospital, Germany
| | | | - A Sionis
- Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain
| | | | - C Beauloye
- Cliniques Universitaires Saint Luc, UCLouvain, Belgium
| | - C Held
- Department of Medical Sciences, Uppsala Clinical Research Center, Sweden
| | - D Tint
- ICCO Clinics, Transilvania University, Romania
| | - I Zakke
- Pauls Stradins Clinical University Hospital, Latvia
| | - P Serpytis
- Faculty of Medicine, Vilnius University, Lithuania
| | - Z Babic
- University Hospital Centre, Sisters of Mercy, Croatia
| | - J Belohlavev
- 2nd Department of Medicine, Charles University, Czech Republic
| | - A Magdy
- National Heart Institution, Egypt
| | | | - K Daly
- University College Hospital, Ireland
| | - D Arroyo
- Hôpital Cantonal Fribourg, Switzerland
| | - M Vavlukis
- PHO University Clinic of Cardiology, Macedonia
| | | | | | - T Marandi
- North Estonia Medical Centre, Estonia
- Department of Cardiology, University of Tartu, Estonia
| | - C Hassenger
- Department of Cardiology, Rigshospitalet, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
| | - M Lettino
- Division of Cardiology, San Gerardo Hospital, Italy
| | - S Price
- Adult Intensive Care Unit, Royal Brompton Hospital, London
| | - E Bonnefoy
- Intensive Cardiac Care Unit, Hospices Civils de Lyon, France
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46
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Claeys MJ, Roubille F, Casella G, Zukermann R, Nikolaou N, De Luca L, Gierlotka M, Iakobishvili Z, Thiele H, Koutouzis M, Sionis A, Monteiro S, Beauloye C, Held C, Tint D, Zakke I, Serpytis P, Babic Z, Belohlavev J, Magdy A, Sivagowry Rasalingam M, Daly K, Arroyo D, Vavlukis M, Radovanovic N, Trendafilova E, Marandi T, Hassenger C, Lettino M, Price S, Bonnefoy E. Organization of intensive cardiac care units in Europe: Results of a multinational survey. European Heart Journal. Acute Cardiovascular Care 2020; 9:993-1001. [DOI: mj claeys, f roubille, g casella, r zukermann, n nikolaou, l de luca, m gierlotka, z iakobishvili, h thiele, m koutouzis, a sionis, s monteiro, c beauloye, c held, d tint, i zakke, p serpytis, z babic, j belohlavev, a magdy, m sivagowry rasalingam, k daly, d arroyo, m vavlukis, n radovanovic, e trendafilova, t marandi, c hassenger, m lettino, s price, e bonnefoy, organization of intensive cardiac care units in europe: results of a multinational survey, european heart journal.acute cardiovascular care, volume 9, issue 8, 1 december 2020, pages 993–1001, https:/doi.org/10.1177/2048872619883997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Background:
The present survey aims to describe the intensive cardiac care unit organization and admission policies in Europe.
Methods:
A total of 228 hospitals (61% academic) from 27 countries participated in this survey. In addition to the organizational aspects of the intensive cardiac care units, including classification of the intensive cardiac care unit levels, data on the admission diagnoses were gathered from consecutive patients who were admitted during a two-day period. Admission policies were evaluated by comparing illness severity with the intensive cardiac care unit level. Gross national income was used to differentiate high-income countries (n=13) from middle-income countries (n=14).
Results:
A total of 98% of the hospitals had an intensive cardiac care unit: 70% had a level 1 intensive cardiac care unit, 76% had a level 2 intensive cardiac care unit, 51% had a level 3 intensive cardiac care unit, and 60% of the hospitals had more than one intensive cardiac care unit level. High-income countries tended to have more level 3 intensive cardiac care units than middle-income countries (55% versus 41%, p=0.07). A total of 5159 admissions were scored on illness severity: 63% were low severity, 24% were intermediate severity, and 12% were high severity. Patients with low illness severity were predominantly admitted to level 1 intensive cardiac care units, whereas patients with high illness severity were predominantly admitted to level 2 and 3 intensive cardiac care units. A policy mismatch was observed in 12% of the patients; some patients with high illness severity were admitted to level 1 intensive cardiac care units, which occurred more often in middle-income countries, whereas some patients with low illness severity were admitted to level 3 intensive cardiac care units, which occurred more frequently in high-income countries.
Conclusion:
More than one-third of the admitted patients were considered intermediate or high risk. Although patients with higher illness severity were mostly admitted to high-level intensive cardiac care units, an admission policy mismatch was observed in 12% of the patients; this mismatch was partly related to insufficient logistic intensive cardiac care unit capacity.
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Affiliation(s)
- MJ Claeys
- Department of Cardiology, Antwerp University Hospital, Belgium
| | - F Roubille
- Department of Cardiology, University Hospital of Montpellier, France
| | - G Casella
- Department of Cardiology, Ospedale Maggiore, Italy
| | | | - N Nikolaou
- Department of Cardiology, Konstantopouleio General Hospital, Greece
| | - L De Luca
- Department of Cardiology, S. Giovanni Evangelista Hospital, Italy
| | - M Gierlotka
- Department of Cardiology, University of Opole, Poland
| | | | - H Thiele
- Heart Center Leipzig, University Hospital, Germany
| | | | - A Sionis
- Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain
| | | | - C Beauloye
- Cliniques Universitaires Saint Luc, UCLouvain, Belgium
| | - C Held
- Department of Medical Sciences, Uppsala Clinical Research Center, Sweden
| | - D Tint
- ICCO Clinics, Transilvania University, Romania
| | - I Zakke
- Pauls Stradins Clinical University Hospital, Latvia
| | - P Serpytis
- Faculty of Medicine, Vilnius University, Lithuania
| | - Z Babic
- University Hospital Centre, Sisters of Mercy, Croatia
| | - J Belohlavev
- 2nd Department of Medicine, Charles University, Czech Republic
| | - A Magdy
- National Heart Institution, Egypt
| | | | - K Daly
- University College Hospital, Ireland
| | - D Arroyo
- Hôpital Cantonal Fribourg, Switzerland
| | - M Vavlukis
- PHO University Clinic of Cardiology, Macedonia
| | | | | | - T Marandi
- North Estonia Medical Centre, Estonia
- Department of Cardiology, University of Tartu, Estonia
| | - C Hassenger
- Department of Cardiology, Rigshospitalet, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
| | - M Lettino
- Division of Cardiology, San Gerardo Hospital, Italy
| | - S Price
- Adult Intensive Care Unit, Royal Brompton Hospital, London
| | - E Bonnefoy
- Intensive Cardiac Care Unit, Hospices Civils de Lyon, France
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47
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Lima F, Dietz CHJT, Silvestre AJD, Branco LC, Canongia Lopes J, Gallucci F, Shimizu K, Held C, Marrucho IM. Vapor Pressure Assessment of Sulfolane-Based Eutectic Solvents: Experimental, PC-SAFT, and Molecular Dynamics. J Phys Chem B 2020; 124:10386-10397. [PMID: 33167621 DOI: 10.1021/acs.jpcb.0c04837] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Since their discovery, deep eutectic solvents (DES) have been explored in multiple applications. However, the complete physicochemical characterization is still nonexistent for many of the proposed and used DES. In particular, vapor pressure, which is a crucial property for the application of DES as solvents, is very rarely available. In this work, the measurement of the total and partial pressures of two sulfolane-based DES, tetrabutylammonium bromide:sulfolane and tetrabutylphosphonium bromide:sulfolane, in several proportions, from 40 to 100 °C and atmospheric pressure, was performed using headspace gas chromatography mass spectrometry, HS-GC-MS. A large decrease on the total pressure was recorded which, together with the finding that total pressures showed negative deviations from Raoult's law, is indicative of the favorable, strong interactions between the two components within the DES. Additionally, the study of vapor pressure change with DES molar composition was carried out, and surprisingly, the existence of inflection points in the pressure curve was observed. Experimental results were modeled using the PC-SAFT equation of state, and in addition, MD simulations were performed to provide a molecular understanding of the pressure data. Considering the different results and insights obtained from the used strategies, it can be concluded that both DES systems have especially strong interactions between salt and sulfolane, at high sulfolane content, due to the different structural rearrangement of the liquid state.
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Affiliation(s)
- Filipa Lima
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal.,CICECO-Aveiro Institute of Materials and Department of Chemistry, Universidade de Aveiro, 3810-193 Aveiro, Portugal.,Solchemar, Lda, Rua 5 de Outubro n° 121C, 1°E, 7580-128 Alcácer do Sal, Portugal
| | - Carin H J T Dietz
- Chemical Process Intensification, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
| | - Armando J D Silvestre
- CICECO-Aveiro Institute of Materials and Department of Chemistry, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Luis C Branco
- Solchemar, Lda, Rua 5 de Outubro n° 121C, 1°E, 7580-128 Alcácer do Sal, Portugal.,LAQV-REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
| | - José Canongia Lopes
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Fausto Gallucci
- Chemical Process Intensification, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
| | - Karina Shimizu
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Christoph Held
- Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Isabel M Marrucho
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
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48
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Vogel K, Greinert T, Reichard M, Held C, Harms H, Maskow T. Thermodynamics and Kinetics of Glycolytic Reactions. Part I: Kinetic Modeling Based on Irreversible Thermodynamics and Validation by Calorimetry. Int J Mol Sci 2020; 21:ijms21218341. [PMID: 33172189 PMCID: PMC7664384 DOI: 10.3390/ijms21218341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 09/03/2020] [Revised: 11/03/2020] [Accepted: 11/04/2020] [Indexed: 12/20/2022] Open
Abstract
In systems biology, material balances, kinetic models, and thermodynamic boundary conditions are increasingly used for metabolic network analysis. It is remarkable that the reversibility of enzyme-catalyzed reactions and the influence of cytosolic conditions are often neglected in kinetic models. In fact, enzyme-catalyzed reactions in numerous metabolic pathways such as in glycolysis are often reversible, i.e., they only proceed until an equilibrium state is reached and not until the substrate is completely consumed. Here, we propose the use of irreversible thermodynamics to describe the kinetic approximation to the equilibrium state in a consistent way with very few adjustable parameters. Using a flux-force approach allowed describing the influence of cytosolic conditions on the kinetics by only one single parameter. The approach was applied to reaction steps 2 and 9 of glycolysis (i.e., the phosphoglucose isomerase reaction from glucose 6-phosphate to fructose 6-phosphate and the enolase-catalyzed reaction from 2-phosphoglycerate to phosphoenolpyruvate and water). The temperature dependence of the kinetic parameter fulfills the Arrhenius relation and the derived activation energies are plausible. All the data obtained in this work were measured efficiently and accurately by means of isothermal titration calorimetry (ITC). The combination of calorimetric monitoring with simple flux-force relations has the potential for adequate consideration of cytosolic conditions in a simple manner.
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Affiliation(s)
- Kristina Vogel
- UFZ–Helmholtz Centre for Environmental Research, Department of Environmental Microbiology, Leipzig, Permoserstr. 15, D-04318 Leipzig, Germany; (K.V.); (M.R.); (H.H.)
- Institute for Drug Development, Leipzig University Medical School, Leipzig University, Bruederstr. 34, 04103 Leipzig, Germany
| | - Thorsten Greinert
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, Technische Universitaet Dortmund, Emil-Figge-Str. 70, 44227 Dortmund, Germany; (T.G.); (C.H.)
| | - Monique Reichard
- UFZ–Helmholtz Centre for Environmental Research, Department of Environmental Microbiology, Leipzig, Permoserstr. 15, D-04318 Leipzig, Germany; (K.V.); (M.R.); (H.H.)
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, Technische Universitaet Dortmund, Emil-Figge-Str. 70, 44227 Dortmund, Germany; (T.G.); (C.H.)
| | - Hauke Harms
- UFZ–Helmholtz Centre for Environmental Research, Department of Environmental Microbiology, Leipzig, Permoserstr. 15, D-04318 Leipzig, Germany; (K.V.); (M.R.); (H.H.)
| | - Thomas Maskow
- UFZ–Helmholtz Centre for Environmental Research, Department of Environmental Microbiology, Leipzig, Permoserstr. 15, D-04318 Leipzig, Germany; (K.V.); (M.R.); (H.H.)
- Correspondence:
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49
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Wassberg C, Batra G, Hadziosmanovic N, Hagstrom E, White H, Stewart R, Siegbahn A, Wallentin L, Held C. Associations between psychosocial burden and prognostic biomarkers in patients with stable coronary heart disease – a STABILITY substudy. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Psychosocial burden is associated with increased risk of cardiovascular (CV) events in patients with stable coronary heart disease (CHD). The underlying mechanisms linking psychosocial burden and CHD are unclear and might be explained by studying biomarkers known to be associated with CV risk.
Methods
15,608 patients in the STABILITY trial completed a questionnaire on to what extent they were feeling down, had loss of interest, experienced financial stress and if they were living alone. Levels of high-sensitivity (hs) C-reactive protein (hs-CRP), interleukin-6 (IL-6), hs-troponin T (hs-TnT) and N-terminal pro-B type natriuretic peptide (NT-proBNP) were assessed at baseline. Associations between levels of psychosocial burden (sometimes, often/always vs. never/rarely) and biomarkers were evaluated in a linear model where geometric mean ratio of the log-transformed biomarker were calculated.
Results
Adjusted associations (age, gender and established CV risk factors) are presented in the table.
Conclusion
Psychosocial burden in patients with stable CHD was independently associated with elevated biomarkers. The underlying association is likely to be complex and involve multiple pathways.
Funding Acknowledgement
Type of funding source: Private company. Main funding source(s): The STABILITY study was funded by GlaxoSmithKline. Roche Diagnostics, Rotkreuz, Switzerland, supported the research by providing the GDF-15 assay free of charge.
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Affiliation(s)
- C Wassberg
- Uppsala University, Dept. of Medical Sciences, Cardiology, Uppsala, Sweden
| | - G Batra
- Uppsala University, Dept. of Medical Sciences, Cardiology and Uppsala Clinical Research Center, Uppsala, Sweden
| | | | - E Hagstrom
- Uppsala University, Dept. of Medical Sciences, Cardiology and Uppsala Clinical Research Center, Uppsala, Sweden
| | - H White
- Auckland City Hospital and University of Auckland, Green Lane Cardiovascular Service, Auckland, New Zealand
| | - R Stewart
- Auckland City Hospital and University of Auckland, Green Lane Cardiovascular Service, Auckland, New Zealand
| | - A Siegbahn
- Uppsala University, Dept. of Medical Sciences, Clinical Chemistry and Uppsala Clinical Research Center, Uppsala, Sweden
| | - L Wallentin
- Uppsala University, Dept. of Medical Sciences, Cardiology and Uppsala Clinical Research Center, Uppsala, Sweden
| | - C Held
- Uppsala University, Dept. of Medical Sciences, Cardiology and Uppsala Clinical Research Center, Uppsala, Sweden
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50
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Vogel K, Greinert T, Reichard M, Held C, Harms H, Maskow T. Thermodynamics and Kinetics of Glycolytic Reactions. Part II: Influence of Cytosolic Conditions on Thermodynamic State Variables and Kinetic Parameters. Int J Mol Sci 2020; 21:ijms21217921. [PMID: 33113841 PMCID: PMC7663428 DOI: 10.3390/ijms21217921] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/18/2020] [Accepted: 10/20/2020] [Indexed: 01/22/2023] Open
Abstract
For systems biology, it is important to describe the kinetic and thermodynamic properties of enzyme-catalyzed reactions and reaction cascades quantitatively under conditions prevailing in the cytoplasm. While in part I kinetic models based on irreversible thermodynamics were tested, here in part II, the influence of the presumably most important cytosolic factors was investigated using two glycolytic reactions (i.e., the phosphoglucose isomerase reaction (PGI) with a uni-uni-mechanism and the enolase reaction with an uni-bi-mechanism) as examples. Crowding by macromolecules was simulated using polyethylene glycol (PEG) and bovine serum albumin (BSA). The reactions were monitored calorimetrically and the equilibrium concentrations were evaluated using the equation of state ePC-SAFT. The pH and the crowding agents had the greatest influence on the reaction enthalpy change. Two kinetic models based on irreversible thermodynamics (i.e., single parameter flux-force and two-parameter Noor model) were applied to investigate the influence of cytosolic conditions. The flux-force model describes the influence of cytosolic conditions on reaction kinetics best. Concentrations of magnesium ions and crowding agents had the greatest influence, while temperature and pH-value had a medium influence on the kinetic parameters. With this contribution, we show that the interplay of thermodynamic modeling and calorimetric process monitoring allows a fast and reliable quantification of the influence of cytosolic conditions on kinetic and thermodynamic parameters.
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Affiliation(s)
- Kristina Vogel
- UFZ - Helmholtz Centre for Environmental Research, Department Environmental Microbiology, Leipzig, Permoserstr. 15, D-04318 Leipzig, Germany; (K.V.); (M.R.); (H.H.)
- Institute for Drug Development, Leipzig University Medical School, Leipzig University, Bruederstr. 34, 04103 Leipzig, Germany
| | - Thorsten Greinert
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, Technische Universitaet Dortmund, Emil-Figge-Str. 70, 44227 Dortmund, Germany;
| | - Monique Reichard
- UFZ - Helmholtz Centre for Environmental Research, Department Environmental Microbiology, Leipzig, Permoserstr. 15, D-04318 Leipzig, Germany; (K.V.); (M.R.); (H.H.)
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, Technische Universitaet Dortmund, Emil-Figge-Str. 70, 44227 Dortmund, Germany;
- Correspondence: (C.H.); (T.M.)
| | - Hauke Harms
- UFZ - Helmholtz Centre for Environmental Research, Department Environmental Microbiology, Leipzig, Permoserstr. 15, D-04318 Leipzig, Germany; (K.V.); (M.R.); (H.H.)
| | - Thomas Maskow
- UFZ - Helmholtz Centre for Environmental Research, Department Environmental Microbiology, Leipzig, Permoserstr. 15, D-04318 Leipzig, Germany; (K.V.); (M.R.); (H.H.)
- Correspondence: (C.H.); (T.M.)
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