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Füllbrunn N, Nicastro R, Mari M, Griffith J, Herrmann E, Rasche R, Borchers AC, Auffarth K, Kümmel D, Reggiori F, De Virgilio C, Langemeyer L, Ungermann C. The GTPase activating protein Gyp7 regulates Rab7/Ypt7 activity on late endosomes. J Cell Biol 2024; 223:e202305038. [PMID: 38536036 PMCID: PMC10978497 DOI: 10.1083/jcb.202305038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 01/22/2024] [Accepted: 03/08/2024] [Indexed: 04/01/2024] Open
Abstract
Organelles of the endomembrane system contain Rab GTPases as identity markers. Their localization is determined by guanine nucleotide exchange factors (GEFs) and GTPase activating proteins (GAPs). It remains largely unclear how these regulators are specifically targeted to organelles and how their activity is regulated. Here, we focus on the GAP Gyp7, which acts on the Rab7-like Ypt7 protein in yeast, and surprisingly observe the protein exclusively in puncta proximal to the vacuole. Mistargeting of Gyp7 to the vacuole strongly affects vacuole morphology, suggesting that endosomal localization is needed for function. In agreement, efficient endolysosomal transport requires Gyp7. In vitro assays reveal that Gyp7 requires a distinct lipid environment for membrane binding and activity. Overexpression of Gyp7 concentrates Ypt7 in late endosomes and results in resistance to rapamycin, an inhibitor of the target of rapamycin complex 1 (TORC1), suggesting that these late endosomes are signaling endosomes. We postulate that Gyp7 is part of regulatory machinery involved in late endosome function.
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Affiliation(s)
- Nadia Füllbrunn
- Department of Biology/Chemistry, Biochemistry Section, Osnabrück University, Osnabrück, Germany
- Center of Cellular Nanoanalytics, Osnabrück University, Osnabrück, Germany
| | - Raffaele Nicastro
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Muriel Mari
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Janice Griffith
- Department of Cell Biology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Eric Herrmann
- Institute of Biochemistry, University of Münster, Münster, Germany
| | - René Rasche
- Institute of Biochemistry, University of Münster, Münster, Germany
| | - Ann-Christin Borchers
- Department of Biology/Chemistry, Biochemistry Section, Osnabrück University, Osnabrück, Germany
| | - Kathrin Auffarth
- Department of Biology/Chemistry, Biochemistry Section, Osnabrück University, Osnabrück, Germany
| | - Daniel Kümmel
- Institute of Biochemistry, University of Münster, Münster, Germany
| | - Fulvio Reggiori
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Department of Cell Biology, University Medical Center Utrecht, Utrecht, Netherlands
| | | | - Lars Langemeyer
- Department of Biology/Chemistry, Biochemistry Section, Osnabrück University, Osnabrück, Germany
- Center of Cellular Nanoanalytics, Osnabrück University, Osnabrück, Germany
| | - Christian Ungermann
- Department of Biology/Chemistry, Biochemistry Section, Osnabrück University, Osnabrück, Germany
- Center of Cellular Nanoanalytics, Osnabrück University, Osnabrück, Germany
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2
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Weine J, McGrath C, Dirix P, Buoso S, Kozerke S. CMRsim-A python package for cardiovascular MR simulations incorporating complex motion and flow. Magn Reson Med 2024; 91:2621-2637. [PMID: 38234037 DOI: 10.1002/mrm.30010] [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: 10/26/2023] [Revised: 12/15/2023] [Accepted: 12/22/2023] [Indexed: 01/19/2024]
Abstract
PURPOSE To present an open-source MR simulation framework that facilitates the incorporation of complex motion and flow for studying cardiovascular MR (CMR) acquisition and reconstruction. METHODS CMRsim is a Python package that allows simulation of CMR images using dynamic digital phantoms with complex motion as input. Two simulation paradigms are available, namely, numerical and analytical solutions to the Bloch equations, using a common motion representation. Competitive simulation speeds are achieved using TensorFlow for GPU acceleration. To demonstrate the capability of the package, one introductory and two advanced CMR simulation experiments are presented. The latter showcase phase-contrast imaging of turbulent flow downstream of a stenotic section and cardiac diffusion tensor imaging on a contracting left ventricle. Additionally, extensive documentation and example resources are provided. RESULTS The Bloch simulation with turbulent flow using approximately 1.5 million particles and a sequence duration of 710 ms for each of the seven different velocity encodings took a total of 29 min on a NVIDIA Titan RTX GPU. The results show characteristic phase contrast and magnitude modulation present in real data. The analytical simulation of cardiac diffusion tensor imaging with bulk-motion phase sensitivity took approximately 10 s per diffusion-weighted image, including preparation and loading steps. The results exhibit the expected alteration of diffusion metrics due to strain. CONCLUSION CMRsim is the first simulation framework that allows one to feasibly incorporate complex motion, including turbulent flow, to systematically study advanced CMR acquisition and reconstruction approaches. The open-source package features modularity and transparency, facilitating maintainability and extensibility in support of reproducible research.
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Affiliation(s)
- Jonathan Weine
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
| | - Charles McGrath
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
| | - Pietro Dirix
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
| | - Stefano Buoso
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
| | - Sebastian Kozerke
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
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Baldo A, Di Domizio J, Yatim A, Vandenberghe-Dürr S, Jenelten R, Fries A, Grizzetti L, Kuonen F, Paul C, Modlin RL, Conrad C, Gilliet M. Human neutrophils drive skin autoinflammation by releasing interleukin (IL)-26. J Exp Med 2024; 221:e20231464. [PMID: 38448036 PMCID: PMC10917069 DOI: 10.1084/jem.20231464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 01/04/2024] [Accepted: 02/09/2024] [Indexed: 03/08/2024] Open
Abstract
Autoinflammation is a sterile inflammatory process resulting from increased neutrophil infiltration and overexpression of IL-1 cytokines. The factors that trigger these events are, however, poorly understood. By investigating pustular forms of psoriasis, we show that human neutrophils constitutively express IL-26 and abundantly release it from granular stores upon activation. In pustular psoriasis, neutrophil-derived IL-26 drives the pathogenic autoinflammation process by inducing the expression of IL-1 cytokines and chemokines that further recruit neutrophils. This occurs via activation of IL-26R in keratinocytes and via the formation of complexes between IL-26 and microbiota DNA, which trigger TLR9 activation of neutrophils. Thus our findings identify neutrophils as an important source of IL-26 and point to IL-26 as the key link between neutrophils and a self-sustaining autoinflammation loop in pustular psoriasis.
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Affiliation(s)
- Alessia Baldo
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Jeremy Di Domizio
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Ahmad Yatim
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Sophie Vandenberghe-Dürr
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Raphael Jenelten
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Anissa Fries
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Lorenzo Grizzetti
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
| | - François Kuonen
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Carle Paul
- Department of Dermatology and Venereology, Centre Hospitalier Universitaire, Toulouse, France
| | - Robert L. Modlin
- Division of Dermatology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Curdin Conrad
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Michel Gilliet
- Department of Dermatology and Venereology, University Hospital of Lausanne, Lausanne, Switzerland
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Gao D, Luster J, Zürcher A, Arend M, Bai E, Gessler A, Rigling A, Schaub M, Hartmann M, Werner RA, Joseph J, Poll C, Hagedorn F. Drought resistance and resilience of rhizosphere communities in forest soils from the cellular to ecosystem scale - insights from 13C pulse labeling. New Phytol 2024; 242:960-974. [PMID: 38402527 DOI: 10.1111/nph.19612] [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] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/06/2024] [Indexed: 02/26/2024]
Abstract
The link between above- and belowground communities is a key uncertainty in drought and rewetting effects on forest carbon (C) cycle. In young beech model ecosystems and mature naturally dry pine forest exposed to 15-yr-long irrigation, we performed 13C pulse labeling experiments, one during drought and one 2 wk after rewetting, tracing tree assimilates into rhizosphere communities. The 13C pulses applied in tree crowns reached soil microbial communities of the young and mature forests one and 4 d later, respectively. Drought decreased the transfer of labeled assimilates relative to the irrigation treatment. The 13C label in phospholipid fatty acids (PLFAs) indicated greater drought reduction of assimilate incorporation by fungi (-85%) than by gram-positive (-43%) and gram-negative bacteria (-58%). 13C label incorporation was more strongly reduced for PLFAs (cell membrane) than for microbial cytoplasm extracted by chloroform. This suggests that fresh rhizodeposits are predominantly used for osmoregulation or storage under drought, at the expense of new cell formation. Two weeks after rewetting, 13C enrichment in PLFAs was greater in previously dry than in continuously moist soils. Drought and rewetting effects were greater in beech systems than in pine forest. Belowground C allocation and rhizosphere communities are highly resilient to drought.
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Affiliation(s)
- Decai Gao
- Swiss Federal Institute for Forest, Snow and Landscape Research, 8903, Birmensdorf, Switzerland
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, 100190, Beijing, China
| | - Jörg Luster
- Swiss Federal Institute for Forest, Snow and Landscape Research, 8903, Birmensdorf, Switzerland
| | - Alois Zürcher
- Swiss Federal Institute for Forest, Snow and Landscape Research, 8903, Birmensdorf, Switzerland
| | - Matthias Arend
- Swiss Federal Institute for Forest, Snow and Landscape Research, 8903, Birmensdorf, Switzerland
- Physiological Plant Ecology, University of Basel, 4056, Basel, Switzerland
| | - Edith Bai
- Key Laboratory of Geographical Processes and Ecological Security of Changbai Mountains, Ministry of Education, Northeast Normal University, 130024, Changchun, China
| | - Arthur Gessler
- Swiss Federal Institute for Forest, Snow and Landscape Research, 8903, Birmensdorf, Switzerland
- Terrestrial Ecosystems, ETH Zürich, 8092, Zürich, Switzerland
| | - Andreas Rigling
- Swiss Federal Institute for Forest, Snow and Landscape Research, 8903, Birmensdorf, Switzerland
- Terrestrial Ecosystems, ETH Zürich, 8092, Zürich, Switzerland
| | - Marcus Schaub
- Swiss Federal Institute for Forest, Snow and Landscape Research, 8903, Birmensdorf, Switzerland
| | - Martin Hartmann
- Sustainable Agroecosystems Group, Department of Environmental Systems Science, Institute of Agricultural Sciences, ETH Zürich, 8092, Zürich, Switzerland
| | - Roland A Werner
- Agricultural Sciences, ETH Zürich, 8092, Zürich, Switzerland
| | - Jobin Joseph
- Swiss Federal Institute for Forest, Snow and Landscape Research, 8903, Birmensdorf, Switzerland
| | - Christian Poll
- Soil Biology, University of Hohenheim, 70599, Stuttgart, Germany
| | - Frank Hagedorn
- Swiss Federal Institute for Forest, Snow and Landscape Research, 8903, Birmensdorf, Switzerland
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Musfeld P, Souza AS, Oberauer K. Testing expectations and retrieval practice modulate repetition learning of visuospatial arrays. J Exp Psychol Learn Mem Cogn 2024; 50:740-758. [PMID: 37883050 DOI: 10.1037/xlm0001298] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
One of the best-known demonstrations of long-term learning through repetition is the Hebb effect: Immediate recall of a memory list repeated amidst nonrepeated lists improves steadily with repetitions. However, previous studies often failed to observe this effect for visuospatial arrays. Souza and Oberauer (2022) showed that the strongest determinant for producing learning was the difficulty of the test: Learning was consistently observed when participants recalled all items of a visuospatial array (difficult test) but not if only one item was recalled, or recognition procedures were used (less difficult tests). This suggests that long-term learning was promoted by increased testing demands over the short term. Alternatively, it is possible that lower testing demands still lead to learning but prevented the application of what was learned. In four preregistered experiments (N = 981), we ruled out this alternative explanation: Changing the type of memory test midway through the experiment from less demanding (i.e., single item recall or recognition) to a more demanding test (i.e., full item recall) did not reveal hidden learning, and changing it from the more demanding to a less demanding test did not conceal learning. Mixing high and low demanding tests for nonrepeated arrays, however, eventually produced Hebb learning even for the less demanding testing conditions. We propose that testing affects long-term learning in two ways: Expectations of the test difficulty influence how information is encoded into memory, and retrieval consolidates this information in memory. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Affiliation(s)
| | | | - Klaus Oberauer
- Department of Cognitive Psychology, University of Zurich
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Romero-Haro AÁ, Mulder E, Haussmann MF, Tschirren B. The association between age and telomere length is age-dependent: Evidence for a threshold model of telomere length maintenance. J Exp Zool A Ecol Integr Physiol 2024; 341:338-344. [PMID: 38258326 DOI: 10.1002/jez.2785] [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] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 12/19/2023] [Accepted: 12/29/2023] [Indexed: 01/24/2024]
Abstract
Telomere length and dynamics are commonly used biomarkers of somatic state, yet the role of telomeres underlying the aging process is still debated. Indeed, to date, empirical evidence for an association between age and telomere length is mixed. Here, we test if the age-dependency of the association between age and telomere length can provide a potential explanation for the reported inconsistencies across studies. To this end, we quantified telomere length by telomere restriction fragment analysis in two groups of Japanese quail (Coturnix japonica) that differed in their age distribution. One group consisted of young adults only, whereas the second group consisted of adults across a wide range of ages. In the young adults group, there was a highly significant negative association between telomere length and age, whereas no association between age and telomere length was found in the all-ages adults group. This difference between groups was not due to telomere length-dependent selective disappearance. Our results shows that the association between telomere length and age is age-dependent and suggest that the costs and benefits associated with telomere maintenance are dynamic across an individual's life course.
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Affiliation(s)
- Ana Á Romero-Haro
- Instituto de Investigación en Recursos Cinegéticos (IREC), CSIC-UCLM-JCCM, Ciudad Real, Spain
- Centre for Ecology and Conservation, University of Exeter, Penryn, UK
| | - Ellis Mulder
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Mark F Haussmann
- Department of Biology, Bucknell University, Lewisburg, Pennsylvania, USA
| | - Barbara Tschirren
- Instituto de Investigación en Recursos Cinegéticos (IREC), CSIC-UCLM-JCCM, Ciudad Real, Spain
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Araya C, Oberauer K, Saito S. Hebb repetition effects in complex and simple span tasks are based on the same learning mechanism. J Exp Psychol Learn Mem Cogn 2024; 50:759-774. [PMID: 37883053 DOI: 10.1037/xlm0001290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
The Hebb repetition effect shows improvement in serial recall of repeated lists compared to random nonrepeated lists. Previous research using simple span tasks found that the Hebb repetition effect is limited to constant uninterrupted lists, suggesting chunking as the mechanism of list learning. However, the Hebb repetition effect has been found in complex span tasks, which challenges the chunking explanation, as successive list items are separated by distractor processing, possibly interfering with the unified representations. We tested the possibility that Hebb repetition learning arises from chunking in simple span, but from position-item associations in complex span. In a series of five experiments, we found evidence that contradicts that hypothesis. Results show that (a) Hebb repetition learning in a complex span task can be transferred to a simple span task; (b) Hebb repetition learning from a complex span task cannot be transferred to a partially repeated simple span task; (c) partial repetition in a complex span task does not lead to learning; (d) Hebb repetition learning from a simple span task can be transferred to a complex span task; and (e) repeating the distractors in complex span has no impact on the Hebb repetition effect. These results suggest that the mechanism underlying the Hebb repetition effect in simple and complex span tasks is the same and points at the creation of chunks while excluding the distractors from the long-term memory representation. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Affiliation(s)
- Claudia Araya
- Division of Cognitive Psychology in Education, Graduate School of Education, Kyoto University
| | - Klaus Oberauer
- Cognitive Psychology Unit, Department of Psychology, University of Zurich
| | - Satoru Saito
- Division of Cognitive Psychology in Education, Graduate School of Education, Kyoto University
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Jonauskaite D, Epicoco D, Al-Rasheed AS, Aruta JJBR, Bogushevskaya V, Brederoo SG, Corona V, Fomins S, Gizdic A, Griber YA, Havelka J, Hirnstein M, John G, Jopp DS, Karlsson B, Konstantinou N, Laurent É, Marquardt L, Mefoh PC, Oberfeld D, Papadatou-Pastou M, Perchtold-Stefan CM, Spagnulo GFM, Sultanova A, Tanaka T, Tengco-Pacquing MC, Uusküla M, Wąsowicz G, Mohr C. A comparative analysis of colour-emotion associations in 16-88-year-old adults from 31 countries. Br J Psychol 2024; 115:275-305. [PMID: 38041610 DOI: 10.1111/bjop.12687] [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: 06/13/2023] [Revised: 10/03/2023] [Accepted: 10/31/2023] [Indexed: 12/03/2023]
Abstract
As people age, they tend to spend more time indoors, and the colours in their surroundings may significantly impact their mood and overall well-being. However, there is a lack of empirical evidence to provide informed guidance on colour choices, irrespective of age group. To work towards informed choices, we investigated whether the associations between colours and emotions observed in younger individuals also apply to older adults. We recruited 7393 participants, aged between 16 and 88 years and coming from 31 countries. Each participant associated 12 colour terms with 20 emotion concepts and rated the intensity of each associated emotion. Different age groups exhibited highly similar patterns of colour-emotion associations (average similarity coefficient of .97), with subtle yet meaningful age-related differences. Adolescents associated the greatest number but the least positively biased emotions with colours. Older participants associated a smaller number but more intense and more positive emotions with all colour terms, displaying a positivity effect. Age also predicted arousal and power biases, varying by colour. Findings suggest parallels in colour-emotion associations between younger and older adults, with subtle but significant age-related variations. Future studies should next assess whether colour-emotion associations reflect what people actually feel when exposed to colour.
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Affiliation(s)
- Domicele Jonauskaite
- Institute of Psychology, University of Lausanne, Lausanne, Switzerland
- Faculty of Psychology, University of Vienna, Vienna, Austria
| | - Déborah Epicoco
- Institute of Psychology, University of Lausanne, Lausanne, Switzerland
| | | | | | | | - Sanne G Brederoo
- University Center for Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Violeta Corona
- School of Economics and Business Administration, Universidad Panamericana, Mexico City, Mexico
- Business Management Department, Universitat Politècnica de València, Valencia, Spain
| | - Sergejs Fomins
- Department of Optometry and Vision Science, Faculty of Physics, Mathematics and Optometry, University of Latvia, Riga, Latvia
| | - Alena Gizdic
- Department of Clinical and Health Psychology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Yulia A Griber
- Department of Sociology and Philosophy, Smolensk State University, Smolensk, Russia
| | | | - Marco Hirnstein
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway
| | - George John
- Department of Biotechnology, Government of India (formerly), New Delhi, India
| | - Daniela S Jopp
- Institute of Psychology and LIVES Center of Competence, University of Lausanne, Lausanne, Switzerland
| | - Bodil Karlsson
- Division Built Environment, RISE Research Institutes of Sweden, Gothenburg, Sweden
| | - Nikos Konstantinou
- Department of Rehabilitation Sciences, School of Health Sciences, Cyprus University of Technology, Limassol, Cyprus
| | - Éric Laurent
- Laboratoire de recherches Intégratives en Neurosciences et psychologie Cognitive (LINC), Université de Franche-Comté, Besançon, France
| | - Lynn Marquardt
- Section for Clinical Neurophysiology, Department of Neurology, Haukeland University Hospital, Bergen, Norway
| | - Philip C Mefoh
- Department of Psychology, Faculty of the Social Sciences, University of Nigeria, Nsukka, Nigeria
| | - Daniel Oberfeld
- Institute of Psychology, Johannes Gutenberg University Mainz, Mainz, Germany
| | | | | | | | | | - Takumi Tanaka
- Graduate School of Humanities and Sociology and Faculty of Letters, The University of Tokyo, Tokyo, Japan
| | | | - Mari Uusküla
- School of Humanities, Tallinn University, Tallinn, Estonia
| | - Grażyna Wąsowicz
- Department of Economic Psychology, Kozminski University, Warsaw, Poland
| | - Christine Mohr
- Institute of Psychology, University of Lausanne, Lausanne, Switzerland
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9
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Brennen WN, Le Magnen C, Karkampouna S, Anselmino N, Bock N, Choo N, Clark AK, Coleman IM, Dolgos R, Ferguson AM, Goode DL, Krutihof-de Julio M, Navone NM, Nelson PS, O'Neill E, Porter LH, Ranasinghe W, Sunada T, Williams ED, Butler LM, Corey E, van Weerden WM, Taylor RA, Risbridger GP, Lawrence MG. Defining the challenges and opportunities for using patient-derived models in prostate cancer research. Prostate 2024; 84:623-635. [PMID: 38450798 PMCID: PMC11014775 DOI: 10.1002/pros.24682] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/29/2024] [Accepted: 02/15/2024] [Indexed: 03/08/2024]
Abstract
BACKGROUND There are relatively few widely used models of prostate cancer compared to other common malignancies. This impedes translational prostate cancer research because the range of models does not reflect the diversity of disease seen in clinical practice. In response to this challenge, research laboratories around the world have been developing new patient-derived models of prostate cancer, including xenografts, organoids, and tumor explants. METHODS In May 2023, we held a workshop at the Monash University Prato Campus for researchers with expertise in establishing and using a variety of patient-derived models of prostate cancer. This review summarizes our collective ideas on how patient-derived models are currently being used, the common challenges, and future opportunities for maximizing their usefulness in prostate cancer research. RESULTS An increasing number of patient-derived models for prostate cancer are being developed. Despite their individual limitations and varying success rates, these models are valuable resources for exploring new concepts in prostate cancer biology and for preclinical testing of potential treatments. Here we focus on the need for larger collections of models that represent the changing treatment landscape of prostate cancer, robust readouts for preclinical testing, improved in vitro culture conditions, and integration of the tumor microenvironment. Additional priorities include ensuring model reproducibility, standardization, and replication, and streamlining the exchange of models and data sets among research groups. CONCLUSIONS There are several opportunities to maximize the impact of patient-derived models on prostate cancer research. We must develop large, diverse and accessible cohorts of models and more sophisticated methods for emulating the intricacy of patient tumors. In this way, we can use the samples that are generously donated by patients to advance the outcomes of patients in the future.
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Affiliation(s)
- W Nathaniel Brennen
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins University, Baltimore, Maryland, USA
- Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University, Baltimore, Maryland, USA
- Department of Pharmacology & Molecular Sciences, Johns Hopkins University, Baltimore, Maryland, USA
| | - Clémentine Le Magnen
- Institute of Medical Genetics and Pathology, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Urology, University Hospital Basel, Basel, Switzerland
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Sofia Karkampouna
- Urology Research Laboratory, Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Nicolas Anselmino
- Department of Genitourinary Medical Oncology and the David H. Koch Center for Applied Research of Genitourinary Cancers, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Nathalie Bock
- School of Biomedical Sciences at Translational Research Institute, Faculty of Health, Queensland University of Technology (QUT), Brisbane, QLD, Australia
- Max Planck Queensland Centre for the Materials Science of Extracellular Matrices, Queensland University of Technology (QUT), Brisbane, QLD, Australia
- Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, QLD, Australia
| | - Nicholas Choo
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute Cancer Program, Monash University, Clayton, VIC, Australia
| | - Ashlee K Clark
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute Cancer Program, Monash University, Clayton, VIC, Australia
| | - Ilsa M Coleman
- Division of Human Biology, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Robin Dolgos
- Institute of Medical Genetics and Pathology, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Urology, University Hospital Basel, Basel, Switzerland
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Alison M Ferguson
- Department for BioMedical Research, University of Bern, Bern, Switzerland
- Katharina Gaus Light Microscopy Facility, Mark Wainwright Analytical Centre, Division of Research and Enterprise, University of New South Wales, Sydney, NSW, Australia
| | - David L Goode
- Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
| | - Marianna Krutihof-de Julio
- Urology Research Laboratory, Department for BioMedical Research, University of Bern, Bern, Switzerland
- Department of Urology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research, Translational Organoid Resource, University of Bern, Bern, Switzerland
| | - Nora M Navone
- Department of Genitourinary Medical Oncology and the David H. Koch Center for Applied Research of Genitourinary Cancers, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Peter S Nelson
- Division of Human Biology, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Division of Clinical Research, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Edward O'Neill
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Laura H Porter
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute Cancer Program, Monash University, Clayton, VIC, Australia
| | - Weranja Ranasinghe
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute Cancer Program, Monash University, Clayton, VIC, Australia
- Department of Surgery, Monash University, Melbourne, VIC, Australia
- Department of Urology, Monash Health, Melbourne, VIC, Australia
- Department of Urology, Austin Health, Melbourne, VIC, Australia
| | - Takuro Sunada
- Department of Urology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Elizabeth D Williams
- School of Biomedical Sciences at Translational Research Institute, Faculty of Health, Queensland University of Technology (QUT), Brisbane, QLD, Australia
- Australian Prostate Cancer Research Centre-Queensland, Brisbane, QLD, Australia
- Centre for Genomics and Personalised Health, Queensland University of Technology (QUT), Brisbane, QLD, Australia
| | - Lisa M Butler
- South Australian Immunogenomics Cancer Institute, University of Adelaide, Adelaide, SA, Australia
- Precision Cancer Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
| | - Eva Corey
- Department of Urology, University of Washington, Seattle, Washington, USA
| | | | - Renea A Taylor
- Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
- Department of Physiology, Biomedicine Discovery Institute Cancer Program, Monash University, Clayton, VIC, Australia
- Cabrini Institute, Cabrini Health, Malvern, VIC, Australia
- Melbourne Urological Research Alliance, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia
| | - Gail P Risbridger
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute Cancer Program, Monash University, Clayton, VIC, Australia
- Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
- Cabrini Institute, Cabrini Health, Malvern, VIC, Australia
- Melbourne Urological Research Alliance, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia
| | - Mitchell G Lawrence
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute Cancer Program, Monash University, Clayton, VIC, Australia
- Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
- Cabrini Institute, Cabrini Health, Malvern, VIC, Australia
- Melbourne Urological Research Alliance, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia
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10
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Pagnotta MF, Riddle J, D'Esposito M. Multiplexed Levels of Cognitive Control through Delta and Theta Neural Oscillations. J Cogn Neurosci 2024; 36:916-935. [PMID: 38319885 DOI: 10.1162/jocn_a_02124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Cognitive control allows behavior to be guided according to environmental contexts and internal goals. During cognitive control tasks, fMRI analyses typically reveal increased activation in frontal and parietal networks, and EEG analyses reveal increased amplitude of neural oscillations in the delta/theta band (2-3, 4-7 Hz) in frontal electrodes. Previous studies proposed that theta-band activity reflects the maintenance of rules associating stimuli to appropriate actions (i.e., the rule set), whereas delta synchrony is specifically associated with the control over the context for when to apply a set of rules (i.e., the rule abstraction). We tested these predictions using EEG and fMRI data collected during the performance of a hierarchical cognitive control task that manipulated the level of abstraction of task rules and their set-size. Our results show a clear separation of delta and theta oscillations in the control of rule abstraction and of stimulus-action associations, respectively, in distinct frontoparietal association networks. These findings support a model by which frontoparietal networks operate through dynamic, multiplexed neural processes.
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11
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Myroniuk TW, Kohler HP, Mwapasa V, Mwera J, Kohler IV. Surprising Gendered Age Differences in Rural Malawians' Early COVID-19 Pandemic Prevention Efforts. J Gerontol B Psychol Sci Soc Sci 2024; 79:gbae031. [PMID: 38457433 PMCID: PMC11000306 DOI: 10.1093/geronb/gbae031] [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: 08/22/2023] [Indexed: 03/10/2024] Open
Abstract
OBJECTIVES We assess how age, the presence of mature adults aged 45+ years, and recent deaths in rural households are associated with coronavirus disease 2019 (COVID-19) preventative actions and the likelihood of getting vaccinated against the virus in Malawi during early stages of the pandemic. METHODS We draw upon data from 2,187 rural Malawians who participated in a 2020 COVID-19 Phone Survey. We estimate the log odds of engaging in "low-cost" and "high-cost" COVID-19 preventative actions based on age, gender, household composition, and recent household deaths. Low-cost prevention efforts were washing hands with soap and water frequently, avoiding close contact with people when going out, and avoiding shaking hands. High-cost actions included staying at home and decreasing time spent close to people not living in their household. We also estimate the chances of acquiring the COVID-19 vaccine in early stages of its availability. RESULTS Mature women (45+ years) in general and younger men (<45 years)-living with at least one mature adult in the household-were less likely than others to comply with low-cost actions. Mature men were more likely than younger men (<45 years) to take on high-cost actions. To some extent, individuals who experienced a recent family death were more likely to engage in high-cost COVID-19 preventative actions as well as getting vaccinated. DISCUSSION Gendered age differences in preventing the transmission of COVID-19 offer hints of larger social norms affecting protective efforts. The analyses also inform future COVID-19 public health outreach efforts in Malawi and other rural SSA contexts.
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Affiliation(s)
- Tyler W Myroniuk
- Department of Public Health, University of Missouri, Columbia, Missouri, USA
| | - Hans-Peter Kohler
- Population Aging Research Center (PARC), University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Victor Mwapasa
- Department of Community and Environmental Health, Kamuzu University of Health Sciences, Blantyre, Malawi
| | | | - Iliana V Kohler
- Population Studies Center, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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12
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Hoekstra MMB, Ness N, Badia-Soteras A, Brancaccio M. Bmal1 integrates circadian function and temperature sensing in the suprachiasmatic nucleus. Proc Natl Acad Sci U S A 2024; 121:e2316646121. [PMID: 38625943 DOI: 10.1073/pnas.2316646121] [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: 09/25/2023] [Accepted: 03/22/2024] [Indexed: 04/18/2024] Open
Abstract
Circadian regulation and temperature dependency are important orchestrators of molecular pathways. How the integration between these two drivers is achieved, is not understood. We monitored circadian- and temperature-dependent effects on transcription dynamics of cold-response protein RNA Binding Motif 3 (Rbm3). Temperature changes in the mammalian master circadian pacemaker, the suprachiasmatic nucleus (SCN), induced Rbm3 transcription and regulated its circadian periodicity, whereas the core clock gene Per2 was unaffected. Rbm3 induction depended on a full Brain And Muscle ARNT-Like Protein 1 (Bmal1) complement: reduced Bmal1 erased Rbm3 responses and weakened SCN circuit resilience to temperature changes. By focusing on circadian and temperature dependency, we highlight weakened transmission between core clock and downstream pathways as a potential route for reduced circadian resilience.
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Affiliation(s)
- Marieke M B Hoekstra
- Department of Brain Science, Imperial College London, London W12 0NN, United Kingdom
- Department of Brain Sciences, United Kingdom Dementia Research Institute at Imperial College London, London W12 0NN, United Kingdom
| | - Natalie Ness
- Department of Brain Science, Imperial College London, London W12 0NN, United Kingdom
- Department of Brain Sciences, United Kingdom Dementia Research Institute at Imperial College London, London W12 0NN, United Kingdom
| | - Aina Badia-Soteras
- Department of Brain Science, Imperial College London, London W12 0NN, United Kingdom
- Department of Brain Sciences, United Kingdom Dementia Research Institute at Imperial College London, London W12 0NN, United Kingdom
| | - Marco Brancaccio
- Department of Brain Science, Imperial College London, London W12 0NN, United Kingdom
- Department of Brain Sciences, United Kingdom Dementia Research Institute at Imperial College London, London W12 0NN, United Kingdom
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13
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von Känel C, Oeljeklaus S, Wenger C, Stettler P, Harsman A, Warscheid B, Schneider A. Intermembrane space-localized TbTim15 is an essential subunit of the single mitochondrial inner membrane protein translocase of trypanosomes. Mol Microbiol 2024. [PMID: 38622999 DOI: 10.1111/mmi.15262] [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: 01/23/2024] [Revised: 03/24/2024] [Accepted: 03/25/2024] [Indexed: 04/17/2024]
Abstract
All mitochondria import >95% of their proteins from the cytosol. This process is mediated by protein translocases in the mitochondrial membranes, whose subunits are generally highly conserved. Most eukaryotes have two inner membrane protein translocases (TIMs) that are specialized to import either presequence-containing or mitochondrial carrier proteins. In contrast, the parasitic protozoan Trypanosoma brucei has a single TIM complex consisting of one conserved and five unique subunits. Here, we identify candidates for new subunits of the TIM or the presequence translocase-associated motor (PAM) using a protein-protein interaction network of previously characterized TIM and PAM subunits. This analysis reveals that the trypanosomal TIM complex contains an additional trypanosomatid-specific subunit, designated TbTim15. TbTim15 is associated with the TIM complex, lacks transmembrane domains, and localizes to the intermembrane space. TbTim15 is essential for procyclic and bloodstream forms of trypanosomes. It contains two twin CX9C motifs and mediates import of both presequence-containing and mitochondrial carrier proteins. While the precise function of TbTim15 in mitochondrial protein import is unknown, our results are consistent with the notion that it may function as an import receptor for the non-canonical trypanosomal TIM complex.
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Affiliation(s)
- Corinne von Känel
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
| | - Silke Oeljeklaus
- Faculty of Chemistry and Pharmacy, Biochemistry II, Theodor Boveri-Institute, University of Würzburg, Würzburg, Germany
| | - Christoph Wenger
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
| | - Philip Stettler
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
| | - Anke Harsman
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
| | - Bettina Warscheid
- Faculty of Chemistry and Pharmacy, Biochemistry II, Theodor Boveri-Institute, University of Würzburg, Würzburg, Germany
| | - André Schneider
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
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14
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Barbanti L, Hothorn T. A transformation perspective on marginal and conditional models. Biostatistics 2024; 25:402-428. [PMID: 36534895 DOI: 10.1093/biostatistics/kxac048] [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: 05/24/2022] [Revised: 11/02/2022] [Accepted: 11/28/2022] [Indexed: 08/04/2023] Open
Abstract
Clustered observations are ubiquitous in controlled and observational studies and arise naturally in multicenter trials or longitudinal surveys. We present a novel model for the analysis of clustered observations where the marginal distributions are described by a linear transformation model and the correlations by a joint multivariate normal distribution. The joint model provides an analytic formula for the marginal distribution. Owing to the richness of transformation models, the techniques are applicable to any type of response variable, including bounded, skewed, binary, ordinal, or survival responses. We demonstrate how the common normal assumption for reaction times can be relaxed in the sleep deprivation benchmark data set and report marginal odds ratios for the notoriously difficult toe nail data. We furthermore discuss the analysis of two clinical trials aiming at the estimation of marginal treatment effects. In the first trial, pain was repeatedly assessed on a bounded visual analog scale and marginal proportional-odds models are presented. The second trial reported disease-free survival in rectal cancer patients, where the marginal hazard ratio from Weibull and Cox models is of special interest. An empirical evaluation compares the performance of the novel approach to general estimation equations for binary responses and to conditional mixed-effects models for continuous responses. An implementation is available in the tram add-on package to the R system and was benchmarked against established models in the literature.
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Affiliation(s)
- Luisa Barbanti
- Institut für Epidemiologie, Biostatistik und Prävention, Universität Zürich, Hirschengraben 84, CH-8001 Zürich, Switzerland
| | - Torsten Hothorn
- Institut für Epidemiologie, Biostatistik und Prävention, Universität Zürich, Hirschengraben 84, CH-8001 Zürich, Switzerland
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15
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Sklias A, Cruciani S, Marchand V, Spagnuolo M, Lavergne G, Bourguignon V, Brambilla A, Dreos R, Marygold S, Novoa E, Motorin Y, Roignant JY. Comprehensive map of ribosomal 2'-O-methylation and C/D box snoRNAs in Drosophila melanogaster. Nucleic Acids Res 2024; 52:2848-2864. [PMID: 38416577 PMCID: PMC11014333 DOI: 10.1093/nar/gkae139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 02/09/2024] [Accepted: 02/26/2024] [Indexed: 03/01/2024] Open
Abstract
During their maturation, ribosomal RNAs (rRNAs) are decorated by hundreds of chemical modifications that participate in proper folding of rRNA secondary structures and therefore in ribosomal function. Along with pseudouridine, methylation of the 2'-hydroxyl ribose moiety (Nm) is the most abundant modification of rRNAs. The majority of Nm modifications in eukaryotes are placed by Fibrillarin, a conserved methyltransferase belonging to a ribonucleoprotein complex guided by C/D box small nucleolar RNAs (C/D box snoRNAs). These modifications impact interactions between rRNAs, tRNAs and mRNAs, and some are known to fine tune translation rates and efficiency. In this study, we built the first comprehensive map of Nm sites in Drosophila melanogaster rRNAs using two complementary approaches (RiboMethSeq and Nanopore direct RNA sequencing) and identified their corresponding C/D box snoRNAs by whole-transcriptome sequencing. We de novo identified 61 Nm sites, from which 55 are supported by both sequencing methods, we validated the expression of 106 C/D box snoRNAs and we predicted new or alternative rRNA Nm targets for 31 of them. Comparison of methylation level upon different stresses show only slight but specific variations, indicating that this modification is relatively stable in D. melanogaster. This study paves the way to investigate the impact of snoRNA-mediated 2'-O-methylation on translation and proteostasis in a whole organism.
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Affiliation(s)
- Athena Sklias
- Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland
| | - Sonia Cruciani
- Center For Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr Aiguader 88, 08003 Barcelona, Spain
| | - Virginie Marchand
- Université de Lorraine, CNRS, INSERM, Epitranscriptomics and RNA sequencing (EpiRNA-Seq) Core Facility (UAR2008/US40 IBSLor) and UMR7365 IMoPA, Nancy, France
| | - Mariangela Spagnuolo
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128 Mainz, Germany
| | - Guillaume Lavergne
- Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland
| | - Valérie Bourguignon
- Université de Lorraine, CNRS, INSERM, Epitranscriptomics and RNA sequencing (EpiRNA-Seq) Core Facility (UAR2008/US40 IBSLor) and UMR7365 IMoPA, Nancy, France
| | - Alessandro Brambilla
- Proteomics and Modomics Experimental Core (PROMEC), Norwegian University of Science and Technology and the Central Norway Regional Health Authority, Trondheim, Norway
| | - René Dreos
- Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland
| | - Steven J Marygold
- FlyBase, Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, United Kingdom
| | - Eva Maria Novoa
- Center For Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr Aiguader 88, 08003 Barcelona, Spain
- University Pompeu Fabra (UPF), Dr Aiguader 88, 08003 Barcelona, Spain
| | - Yuri Motorin
- Université de Lorraine, CNRS, INSERM, Epitranscriptomics and RNA sequencing (EpiRNA-Seq) Core Facility (UAR2008/US40 IBSLor) and UMR7365 IMoPA, Nancy, France
| | - Jean-Yves Roignant
- Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128 Mainz, Germany
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16
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Horvath R, Minadakis N, Bourgeois Y, Roulin AC. The evolution of transposable elements in Brachypodium distachyon is governed by purifying selection, while neutral and adaptive processes play a minor role. eLife 2024; 12:RP93284. [PMID: 38606833 PMCID: PMC11014726 DOI: 10.7554/elife.93284] [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] [Indexed: 04/13/2024] Open
Abstract
Understanding how plants adapt to changing environments and the potential contribution of transposable elements (TEs) to this process is a key question in evolutionary genomics. While TEs have recently been put forward as active players in the context of adaptation, few studies have thoroughly investigated their precise role in plant evolution. Here, we used the wild Mediterranean grass Brachypodium distachyon as a model species to identify and quantify the forces acting on TEs during the adaptation of this species to various conditions, across its entire geographic range. Using sequencing data from more than 320 natural B. distachyon accessions and a suite of population genomics approaches, we reveal that putatively adaptive TE polymorphisms are rare in wild B. distachyon populations. After accounting for changes in past TE activity, we show that only a small proportion of TE polymorphisms evolved neutrally (<10%), while the vast majority of them are under moderate purifying selection regardless of their distance to genes. TE polymorphisms should not be ignored when conducting evolutionary studies, as they can be linked to adaptation. However, our study clearly shows that while they have a large potential to cause phenotypic variation in B. distachyon, they are not favored during evolution and adaptation over other types of mutations (such as point mutations) in this species.
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Affiliation(s)
- Robert Horvath
- Department of Plant and Microbial Biology, University of ZurichZurichSwitzerland
| | - Nikolaos Minadakis
- Department of Plant and Microbial Biology, University of ZurichZurichSwitzerland
| | - Yann Bourgeois
- DIADE, University of Montpellier, CIRAD, IRDMontpellierFrance
- University of PortsmouthPortsmouthUnited Kingdom
| | - Anne C Roulin
- Department of Plant and Microbial Biology, University of ZurichZurichSwitzerland
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17
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Dhaka B, Zimmerli M, Hanhart D, Moser M, Guillen-Ramirez H, Mishra S, Esposito R, Polidori T, Widmer M, García-Pérez R, Julio MKD, Pervouchine D, Melé M, Chouvardas P, Johnson R. Functional identification of cis-regulatory long noncoding RNAs at controlled false discovery rates. Nucleic Acids Res 2024; 52:2821-2835. [PMID: 38348970 PMCID: PMC11014264 DOI: 10.1093/nar/gkae075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 01/15/2024] [Accepted: 01/26/2024] [Indexed: 03/09/2024] Open
Abstract
A key attribute of some long noncoding RNAs (lncRNAs) is their ability to regulate expression of neighbouring genes in cis. However, such 'cis-lncRNAs' are presently defined using ad hoc criteria that, we show, are prone to false-positive predictions. The resulting lack of cis-lncRNA catalogues hinders our understanding of their extent, characteristics and mechanisms. Here, we introduce TransCistor, a framework for defining and identifying cis-lncRNAs based on enrichment of targets amongst proximal genes. TransCistor's simple and conservative statistical models are compatible with functionally defined target gene maps generated by existing and future technologies. Using transcriptome-wide perturbation experiments for 268 human and 134 mouse lncRNAs, we provide the first large-scale survey of cis-lncRNAs. Known cis-lncRNAs are correctly identified, including XIST, LINC00240 and UMLILO, and predictions are consistent across analysis methods, perturbation types and independent experiments. We detect cis-activity in a minority of lncRNAs, primarily involving activators over repressors. Cis-lncRNAs are detected by both RNA interference and antisense oligonucleotide perturbations. Mechanistically, cis-lncRNA transcripts are observed to physically associate with their target genes and are weakly enriched with enhancer elements. In summary, TransCistor establishes a quantitative foundation for cis-lncRNAs, opening a path to elucidating their molecular mechanisms and biological significance.
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Affiliation(s)
- Bhavya Dhaka
- School of Biology and Environmental Science, University College Dublin, Dublin D04 V1W8, Ireland
- Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin D04 V1W8, Ireland
| | - Marc Zimmerli
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
- Department for BioMedical Research, University of Bern, Bern 3008, Switzerland
| | - Daniel Hanhart
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
- Department for BioMedical Research, University of Bern, Bern 3008, Switzerland
| | - Mario B Moser
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
- Department for BioMedical Research, University of Bern, Bern 3008, Switzerland
| | - Hugo Guillen-Ramirez
- School of Biology and Environmental Science, University College Dublin, Dublin D04 V1W8, Ireland
- Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin D04 V1W8, Ireland
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
- Department for BioMedical Research, University of Bern, Bern 3008, Switzerland
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Sanat Mishra
- Indian Institute of Science Education and Research, Mohali, India
| | - Roberta Esposito
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
- Department for BioMedical Research, University of Bern, Bern 3008, Switzerland
| | - Taisia Polidori
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
- Department for BioMedical Research, University of Bern, Bern 3008, Switzerland
| | - Maro Widmer
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
- Department for BioMedical Research, University of Bern, Bern 3008, Switzerland
| | - Raquel García-Pérez
- Department of Life Sciences, Barcelona Supercomputing Centre, Barcelona 08034, Spain
| | - Marianna Kruithof-de Julio
- Department of Urology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Urology Research Laboratory, Department for BioMedical Research, University of Bern, 3008, Bern, Switzerland
| | - Dmitri Pervouchine
- Center for Cellular and Molecular Biology, Skolkovo Institute of Science and Technology, Moscow, Russia
| | - Marta Melé
- Department of Life Sciences, Barcelona Supercomputing Centre, Barcelona 08034, Spain
| | - Panagiotis Chouvardas
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
- Department for BioMedical Research, University of Bern, Bern 3008, Switzerland
- Department of Urology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Urology Research Laboratory, Department for BioMedical Research, University of Bern, 3008, Bern, Switzerland
| | - Rory Johnson
- School of Biology and Environmental Science, University College Dublin, Dublin D04 V1W8, Ireland
- Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin D04 V1W8, Ireland
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
- Department for BioMedical Research, University of Bern, Bern 3008, Switzerland
- FutureNeuro SFI Research Centre, University College Dublin, Dublin D04 V1W8, Ireland
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18
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Fuchs Wightman F, Lukin J, Giusti S, Soutschek M, Bragado L, Pozzi B, Pierelli M, González P, Fededa J, Schratt G, Fujiwara R, Wilusz J, Refojo D, de la Mata M. Influence of RNA circularity on Target RNA-Directed MicroRNA Degradation. Nucleic Acids Res 2024; 52:3358-3374. [PMID: 38381063 PMCID: PMC11014252 DOI: 10.1093/nar/gkae094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 01/03/2024] [Accepted: 01/30/2024] [Indexed: 02/22/2024] Open
Abstract
A subset of circular RNAs (circRNAs) and linear RNAs have been proposed to 'sponge' or block microRNA activity. Additionally, certain RNAs induce microRNA destruction through the process of Target RNA-Directed MicroRNA Degradation (TDMD), but whether both linear and circular transcripts are equivalent in driving TDMD is unknown. Here, we studied whether circular/linear topology of endogenous and artificial RNA targets affects TDMD. Consistent with previous knowledge that Cdr1as (ciRS-7) circular RNA protects miR-7 from Cyrano-mediated TDMD, we demonstrate that depletion of Cdr1as reduces miR-7 abundance. In contrast, overexpression of an artificial linear version of Cdr1as drives miR-7 degradation. Using plasmids that express a circRNA with minimal co-expressed cognate linear RNA, we show differential effects on TDMD that cannot be attributed to the nucleotide sequence, as the TDMD properties of a sequence often differ when in a circular versus linear form. By analysing RNA sequencing data of a neuron differentiation system, we further detect potential effects of circRNAs on microRNA stability. Our results support the view that RNA circularity influences TDMD, either enhancing or inhibiting it on specific microRNAs.
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Affiliation(s)
- Federico Fuchs Wightman
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires 1428, Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), Buenos Aires 1428, Argentina
| | - Jerónimo Lukin
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA) - CONICET - Partner Institute of the Max Planck Society, Godoy Cruz 2390, C1425FQD Buenos Aires 1425, Argentina
| | - Sebastián A Giusti
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA) - CONICET - Partner Institute of the Max Planck Society, Godoy Cruz 2390, C1425FQD Buenos Aires 1425, Argentina
| | - Michael Soutschek
- Lab of Systems Neuroscience, D-HEST Institute for Neuroscience, ETH Zürich 8092, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, ETH Zürich 8092, Switzerland
| | - Laureano Bragado
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires 1428, Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), Buenos Aires 1428, Argentina
| | - Berta Pozzi
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires 1428, Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), Buenos Aires 1428, Argentina
- Institute of Cell Biology, University of Bern, Bern 3012, Switzerland
| | - María L Pierelli
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires 1428, Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), Buenos Aires 1428, Argentina
| | - Paula González
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde”, IIB-UNSAM, IIBIO-CONICET, Universidad Nacional de San Martín, Buenos Aires 1650, Argentina
| | - Juan P Fededa
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde”, IIB-UNSAM, IIBIO-CONICET, Universidad Nacional de San Martín, Buenos Aires 1650, Argentina
| | - Gerhard Schratt
- Lab of Systems Neuroscience, D-HEST Institute for Neuroscience, ETH Zürich 8092, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, ETH Zürich 8092, Switzerland
| | - Rina Fujiwara
- Verna and Marrs McLean Department of Biochemistry and Molecular Pharmacology, Therapeutic Innovation Center, Baylor College of Medicine, Houston, TX77030, USA
| | - Jeremy E Wilusz
- Verna and Marrs McLean Department of Biochemistry and Molecular Pharmacology, Therapeutic Innovation Center, Baylor College of Medicine, Houston, TX77030, USA
| | - Damián Refojo
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA) - CONICET - Partner Institute of the Max Planck Society, Godoy Cruz 2390, C1425FQD Buenos Aires 1425, Argentina
- Max Planck Institute of Psychiatry, Munich, Germany
| | - Manuel de la Mata
- CONICET-Universidad de Buenos Aires, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), Buenos Aires 1428, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales. Departamento de Fisiología, Biología Molecular y Celular, Buenos Aires 1428, Argentina
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19
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Rrapi M, Batsika CS, Nikitas NF, Tappin NDC, Triandafillidi I, Renaud P, Kokotos CG. Photochemical Synthesis of Lactones, Cyclopropanes and ATRA Products: Revealing the Role of Sodium Ascorbate. Chemistry 2024; 30:e202400253. [PMID: 38324672 DOI: 10.1002/chem.202400253] [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: 01/28/2024] [Revised: 02/06/2024] [Accepted: 02/06/2024] [Indexed: 02/09/2024]
Abstract
Light-mediated processes have received significant attention, since they have re-surfaced unconventional reactivity platforms, complementary to conventional polar chemistry. γ-Lactones and cyclopropanes are prevalent moieties, found in numerous natural products and pharmaceuticals. Among various methods for their synthesis, light-mediated protocols are coming to the spotlight, although these are contingent upon the use of photoorgano- or metal-based catalysts. Herein, we introduce a novel photochemical activation of iodo-reagents via the use of cheap sodium ascorbate or ascorbic acid to enable their homolytic scission and addition onto double bonds. The developed protocol was applied successfully to the formal [3+2] cycloaddition for the synthesis of γ-lactones, traditional atom transfer radical addition (ATRA) reactions and the one-pot two-step conversion of alkenes to cyclopropanes. In all cases, the desired products were obtained in good to high yields, while the reaction mechanism was thoroughly investigated. Depending on the nature of the iodo-reagent, a halogen or a hydrogen-bonded complex is formed, which initiates the process.
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Affiliation(s)
- Marie Rrapi
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens, 15771, Greece
| | - Charikleia S Batsika
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens, 15771, Greece
| | - Nikolaos F Nikitas
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens, 15771, Greece
- Department of Chemistry, Biochemistry, and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012, Bern, Switzerland
| | - Nicholas D C Tappin
- Department of Chemistry, Biochemistry, and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012, Bern, Switzerland
| | - Ierasia Triandafillidi
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens, 15771, Greece
| | - Philippe Renaud
- Department of Chemistry, Biochemistry, and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012, Bern, Switzerland
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens, 15771, Greece
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20
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Nalivaiko EY, Seebeck FP. A Rhodanese-Like Enzyme that Catalyzes Desulfination of Ergothioneine Sulfinic Acid. Chembiochem 2024:e202400131. [PMID: 38597743 DOI: 10.1002/cbic.202400131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/12/2024] [Indexed: 04/11/2024]
Abstract
Many actinobacterial species contain structural genes for iron-dependent enzymes that consume ergothioneine by way of O2-dependent dioxygenation. The resulting product ergothioneine sulfinic acid is stable under physiological conditions unless cleavage to sulfur dioxide and trimethyl histidine is catalyzed by a dedicated desulfinase. This report documents that two types of ergothioneine sulfinic desulfinases have evolved by convergent evolution. One type is related to metal-dependent decarboxylases while the other belongs to the superfamily of rhodanese-like enzymes. Pairs of ergothioneine dioxygenases (ETDO) and ergothioneine sulfinic acid desulfinase (ETSD) occur in thousands of sequenced actinobacteria, suggesting that oxidative ergothioneine degradation is a common activity in this phylum.
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Affiliation(s)
- Egor Y Nalivaiko
- Department of Chemistry, University of Basel, Mattenstrasse 24a, Basel, 4002, Switzerland
| | - Florian P Seebeck
- Department of Chemistry, University of Basel, Mattenstrasse 24a, Basel, 4002, Switzerland
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21
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Kampouri E, Ibrahimi SS, Xie H, Wong ER, Hecht JB, Sekhon MK, Vo A, Stevens-Ayers TL, Green DJ, Gauthier J, Maloney DG, Perez A, Jerome KR, Leisenring WM, Boeckh MJ, Hill JA. Cytomegalovirus (CMV) Reactivation and CMV-Specific Cell-Mediated Immunity After Chimeric Antigen Receptor T-Cell Therapy. Clin Infect Dis 2024; 78:1022-1032. [PMID: 37975819 PMCID: PMC11006113 DOI: 10.1093/cid/ciad708] [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: 09/05/2023] [Revised: 11/03/2023] [Accepted: 11/16/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND The epidemiology of cytomegalovirus (CMV) after chimeric antigen receptor-modified T-cell immunotherapy (CARTx) is poorly understood owing to a lack of routine surveillance. METHODS We prospectively enrolled 72 adult CMV-seropositive CD19-, CD20-, or BCMA-targeted CARTx recipients and tested plasma samples for CMV before and weekly up to 12 weeks after CARTx. We assessed CMV-specific cell-mediated immunity (CMV-CMI) before and 2 and 4 weeks after CARTx, using an interferon γ release assay to quantify T-cell responses to IE-1 and pp65. We tested pre-CARTx samples to calculate a risk score for cytopenias and infection (CAR-HEMATOTOX). We used Cox regression to evaluate CMV risk factors and evaluated the predictive performance of CMV-CMI for CMV reactivation in receiver operator characteristic curves. RESULTS CMV was detected in 1 patient (1.4%) before and in 18 (25%) after CARTx, for a cumulative incidence of 27% (95% confidence interval, 16.8-38.2). The median CMV viral load (interquartile range) was 127 (interquartile range, 61-276) IU/mL, with no end-organ disease observed; 5 patients received preemptive therapy based on clinical results. CMV-CMI values reached a nadir 2 weeks after infusion and recovered to baseline levels by week 4. In adjusted models, BCMA-CARTx (vs CD19/CD20) and corticosteroid use for >3 days were significantly associated with CMV reactivation, and possible associations were detected for lower week 2 CMV-CMI and more prior antitumor regimens. The cumulative incidence of CMV reactivation almost doubled when stratified by BCMA-CARTx target and use of corticosteroids for >3 days (46% and 49%, respectively). CONCLUSIONS CMV testing could be considered between 2 and 6 weeks in high-risk CARTx recipients.
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Affiliation(s)
- Eleftheria Kampouri
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Sarah S Ibrahimi
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Hu Xie
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Elizabeth R Wong
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Jessica B Hecht
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Mandeep K Sekhon
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Alythia Vo
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Terry L Stevens-Ayers
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Damian J Green
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Jordan Gauthier
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - David G Maloney
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Ailyn Perez
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Keith R Jerome
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Wendy M Leisenring
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Public Health Sciences Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Michael J Boeckh
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Joshua A Hill
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, University of Washington, Seattle, Washington, USA
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22
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Papadimitriou-Olivgeris M, Monney P, Frank M, Tzimas G, Tozzi P, Kirsch M, Van Hemelrijck M, Bauernschmitt R, Epprecht J, Guery B, Hasse B. Evaluation of the 2023 Duke-International Society of Cardiovascular Infectious Diseases Criteria in a Multicenter Cohort of Patients With Suspected Infective Endocarditis. Clin Infect Dis 2024; 78:949-955. [PMID: 38330243 PMCID: PMC11006096 DOI: 10.1093/cid/ciae039] [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: 05/09/2023] [Revised: 06/28/2023] [Accepted: 01/26/2024] [Indexed: 02/10/2024] Open
Abstract
BACKGROUND Since publication of Duke criteria for infective endocarditis (IE) diagnosis, several modifications have been proposed. We aimed to evaluate the diagnostic performance of the Duke-ISCVID (International Society of Cardiovascular Infectious Diseases) 2023 criteria compared to prior versions from 2000 (Duke-Li 2000) and 2015 (Duke-ESC [European Society for Cardiology] 2015). METHODS This study was conducted at 2 university hospitals between 2014 and 2022 among patients with suspected IE. A case was classified as IE (final IE diagnosis) by the Endocarditis Team. Sensitivity for each version of the Duke criteria was calculated among patients with confirmed IE based on pathological, surgical, and microbiological data. Specificity for each version of the Duke criteria was calculated among patients with suspected IE for whom IE diagnosis was ruled out. RESULTS In total, 2132 episodes with suspected IE were included, of which 1101 (52%) had final IE diagnosis. Definite IE by pathologic criteria was found in 285 (13%), 285 (13%), and 345 (16%) patients using the Duke-Li 2000, Duke-ESC 2015, or the Duke-ISCVID 2023 criteria, respectively. IE was excluded by histopathology in 25 (1%) patients. The Duke-ISCVID 2023 clinical criteria showed a higher sensitivity (84%) compared to previous versions (70%). However, specificity of the new clinical criteria was lower (60%) compared to previous versions (74%). CONCLUSIONS The Duke-ISCVID 2023 criteria led to an increase in sensitivity compared to previous versions. Further studies are needed to evaluate items that could increase sensitivity by reducing the number of IE patients misclassified as possible, but without having detrimental effect on specificity of Duke criteria.
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Affiliation(s)
| | - Pierre Monney
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Michelle Frank
- Department of Cardiology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Georgios Tzimas
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Piergiorgio Tozzi
- Department of Cardiac Surgery, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Matthias Kirsch
- Department of Cardiac Surgery, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Mathias Van Hemelrijck
- Department of Cardiac Surgery, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Robert Bauernschmitt
- Department of Cardiac Surgery, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Jana Epprecht
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Benoit Guery
- Infectious Diseases Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Barbara Hasse
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
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23
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Mikail N, Sager DF, Gebert P, Haider A, Todorov A, Bengs S, Sablonier N, Glarner I, Vinzens A, Sang Bastian N, Epprecht G, Sütsch C, Delcò A, Fiechter M, Portmann A, Treyer V, Wegener S, Gräni C, Pazhenkottil A, Gebhard CE, Regitz-Zagrosek V, Tanner FC, Kaufmann PA, Buechel RR, Rossi A, Gebhard C. Imaging of the brain-heart axis: prognostic value in a European setting. Eur Heart J 2024:ehae162. [PMID: 38596850 DOI: 10.1093/eurheartj/ehae162] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 01/28/2024] [Accepted: 03/04/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND AND AIMS Increasing data suggest that stress-related neural activity (SNA) is associated with subsequent major adverse cardiovascular events (MACE) and may represent a therapeutic target. Current evidence is exclusively based on populations from the U.S. and Asia where limited information about cardiovascular disease risk was available. This study sought to investigate whether SNA imaging has clinical value in a well-characterized cohort of cardiovascular patients in Europe. METHODS In this single-centre study, a total of 963 patients (mean age 58.4 ± 16.1 years, 40.7% female) with known cardiovascular status, ranging from 'at-risk' to manifest disease, and without active cancer underwent 2-[18F]fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography between 1 January 2005 and 31 August 2019. Stress-related neural activity was assessed with validated methods and relations between SNA and MACE (non-fatal stroke, non-fatal myocardial infarction, coronary revascularization, and cardiovascular death) or all-cause mortality by time-to-event analysis. RESULTS Over a maximum follow-up of 17 years, 118 individuals (12.3%) experienced MACE, and 270 (28.0%) died. In univariate analyses, SNA significantly correlated with an increased risk of MACE (sub-distribution hazard ratio 1.52, 95% CI 1.05-2.19; P = .026) or death (hazard ratio 2.49, 95% CI 1.96-3.17; P < .001). In multivariable analyses, the association between SNA imaging and MACE was lost when details of the cardiovascular status were added to the models. Conversely, the relationship between SNA imaging and all-cause mortality persisted after multivariable adjustments. CONCLUSIONS In a European patient cohort where cardiovascular status is known, SNA imaging is a robust and independent predictor of all-cause mortality, but its prognostic value for MACE is less evident. Further studies should define specific patient populations that might profit from SNA imaging.
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Affiliation(s)
- Nidaa Mikail
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Dominik F Sager
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Pimrapat Gebert
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
- Institute of Biometry and Clinical Epidemiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Ahmed Haider
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, USA
| | - Atanas Todorov
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Susan Bengs
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Noemi Sablonier
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Isabelle Glarner
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Adriana Vinzens
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Nastaran Sang Bastian
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Gioia Epprecht
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Claudia Sütsch
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Alessia Delcò
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Michael Fiechter
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
- Swiss Paraplegic Center, Nottwil, Switzerland
| | - Angela Portmann
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Valerie Treyer
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
| | - Susanne Wegener
- Department of Neurology and Clinical Neuroscience Center, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Christoph Gräni
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 20, 3010, Bern, Switzerland
| | - Aju Pazhenkottil
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
| | - Caroline E Gebhard
- Intensive Care Unit, Department of Acute Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Vera Regitz-Zagrosek
- University of Zurich, Zurich, Switzerland
- Institute of Gender in Medicine (GiM), Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Felix C Tanner
- Department of Cardiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Philipp A Kaufmann
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
| | - Ronny R Buechel
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
| | - Alexia Rossi
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
| | - Catherine Gebhard
- Department of Nuclear Medicine, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Wagistrasse 12, 8952, Schlieren, Switzerland
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 20, 3010, Bern, Switzerland
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24
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Magkiriadou S, Stepp WL, Newman DK, Manley S, Racki LR. Polyphosphate affects cytoplasmic and chromosomal dynamics in nitrogen-starved Pseudomonas aeruginosa. Proc Natl Acad Sci U S A 2024; 121:e2313004121. [PMID: 38564631 PMCID: PMC11009631 DOI: 10.1073/pnas.2313004121] [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: 08/21/2023] [Accepted: 01/26/2024] [Indexed: 04/04/2024] Open
Abstract
Polyphosphate (polyP) synthesis is a ubiquitous stress and starvation response in bacteria. In diverse species, mutants unable to make polyP have a wide variety of physiological defects, but the mechanisms by which this simple polyanion exerts its effects remain unclear. One possibility is that polyP's many functions stem from global effects on the biophysical properties of the cell. We characterize the effect of polyphosphate on cytoplasmic mobility under nitrogen-starvation conditions in the opportunistic pathogen Pseudomonas aeruginosa. Using fluorescence microscopy and particle tracking, we quantify the motion of chromosomal loci and cytoplasmic tracer particles. In the absence of polyP and upon starvation, we observe a 2- to 10-fold increase in mean cytoplasmic diffusivity. Tracer particles reveal that polyP also modulates the partitioning between a "more mobile" and a "less mobile" population: Small particles in cells unable to make polyP are more likely to be "mobile" and explore more of the cytoplasm, particularly during starvation. Concomitant with this larger freedom of motion in polyP-deficient cells, we observe decompaction of the nucleoid and an increase in the steady-state concentration of ATP. The dramatic polyP-dependent effects we observe on cytoplasmic transport properties occur under nitrogen starvation, but not carbon starvation, suggesting that polyP may have distinct functions under different types of starvation.
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Affiliation(s)
- Sofia Magkiriadou
- Laboratory of Experimental Biophysics, Institute of Physics, École Polytechnique Fédérale de Lausanne, LausanneCH-1015, Switzerland
| | - Willi L. Stepp
- Laboratory of Experimental Biophysics, Institute of Physics, École Polytechnique Fédérale de Lausanne, LausanneCH-1015, Switzerland
| | - Dianne K. Newman
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA91125
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA91125
| | - Suliana Manley
- Laboratory of Experimental Biophysics, Institute of Physics, École Polytechnique Fédérale de Lausanne, LausanneCH-1015, Switzerland
| | - Lisa R. Racki
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, San Diego, CA92037
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25
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Thomson M, Cavelti M, Lerch S, Koenig J, Reichl C, Mürner-Lavanchy I, Wyssen A, Kaess M. Clinical profiles of adolescent personality pathology: a latent structure examination of the Semi-Structured Interview for Personality Functioning DSM-5 (STiP-5.1) in a help-seeking sample. Borderline Personal Disord Emot Dysregul 2024; 11:9. [PMID: 38589974 PMCID: PMC11003081 DOI: 10.1186/s40479-024-00252-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 03/25/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND Despite the introduction of dimensional conceptualisations of personality functioning in the latest classification systems, such as Criterion A of the Alternative Model of Personality Disorders in the DSM-5, heterogeneous clinical presentation of personality pathology remains a challenge. Relatedly, the latent structure of personality pathology as assessed by the Semi-Structured Interview for Personality Functioning DSM-5 (STiP-5.1) has not yet been comprehensively examined in adolescents. Therefore, this study aimed to examine the latent structure of the STiP-5.1, and, based on those findings, to describe any unique clinical profiles that might emerge. METHODS The final sample comprised 502 participants aged 11-18 years consecutively recruited from a specialised personality disorder outpatient service, as well as general day clinic and inpatient wards at the University Hospital University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University Hospital Bern, Switzerland. Participants were assessed using the STiP-5.1, as well as a battery of other psychological measures by clinical psychologists or trained doctoral students. Variations of Factor Analysis, Latent Class Analysis and Factor Mixture Models (FMM) were applied to the STiP-5.1 to determine the most appropriate structure. RESULTS The best fitting model was an FMM comprising four-classes and two factors (corresponding to self- and interpersonal-functioning). The classes differed in both overall severity of personality functioning impairment, and in their scores and clinical relevance on each element of the STiP-5.1. When compared to the overall sample, classes differed in their unique clinical presentation: class 1 had low impairment, class 2 had impairments primarily in self-functioning with high depressivity, class 3 had mixed levels of impairment with emerging problems in identity and empathy, and class 4 had severe overall personality functioning impairment. CONCLUSIONS A complex model incorporating both dimensional and categorical components most adequately describes the latent structure of the STiP-5.1 in our adolescent sample. We conclude that Criterion A provides clinically useful information beyond severity (as a dimensional continuum) alone, and that the hybrid model found for personality functioning in our sample warrants further attention. Findings can help to parse out clinical heterogeneity in personality pathology in adolescents, and help to inform early identification and intervention efforts.
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Affiliation(s)
- Madelyn Thomson
- University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
- Graduate School for Health Sciences, University of Bern, Bern, Switzerland
| | - Marialuisa Cavelti
- University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
| | - Stefan Lerch
- University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
| | - Julian Koenig
- University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy Faculty of Medicine, University of Cologne, University Hospital Cologne, Cologne, Germany
| | - Corinna Reichl
- University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
| | - Ines Mürner-Lavanchy
- University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
| | - Andrea Wyssen
- University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
| | - Michael Kaess
- University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland.
- Department of Child and Adolescent Psychiatry, Centre for Psychosocial Medicine, University of Heidelberg, Heidelberg, Germany.
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Bergonti M, Sacher F, Arbelo E, Crotti L, Sabbag A, Casella M, Saenen J, Rossi A, Monaco C, Pannone L, Compagnucci P, Russo V, Heller E, Santoro A, Berne P, Bisignani A, Baldi E, Van Leuven O, Migliore F, Marcon L, Dagradi F, Sfondrini I, Landra F, Comune A, Cespón-Fernández M, Nesti M, Santoro F, Magnocavallo M, Vicentini A, Conti S, Ribatti V, Brugada P, de Asmundis C, Brugada J, Tondo C, Schwartz PJ, Haissaguerre M, Auricchio A, Conte G. Implantable loop recorders in patients with Brugada syndrome: the BruLoop study. Eur Heart J 2024; 45:1255-1265. [PMID: 38445836 PMCID: PMC10998731 DOI: 10.1093/eurheartj/ehae133] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 01/09/2024] [Accepted: 02/19/2024] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND AND AIMS Available data on continuous rhythm monitoring by implantable loop recorders (ILRs) in patients with Brugada syndrome (BrS) are scarce. The aim of this multi-centre study was to evaluate the diagnostic yield and clinical implication of a continuous rhythm monitoring strategy by ILRs in a large cohort of BrS patients and to assess the precise arrhythmic cause of syncopal episodes. METHODS A total of 370 patients with BrS and ILRs (mean age 43.5 ± 15.9, 33.8% female, 74.1% symptomatic) from 18 international centers were included. Patients were followed with continuous rhythm monitoring for a median follow-up of 3 years. RESULTS During follow-up, an arrhythmic event was recorded in 30.7% of symptomatic patients [18.6% atrial arrhythmias (AAs), 10.2% bradyarrhythmias (BAs), and 7.3% ventricular arrhythmias (VAs)]. In patients with recurrent syncope, the aetiology was arrhythmic in 22.4% (59.3% BAs, 25.0% VAs, and 15.6% AAs). The ILR led to drug therapy initiation in 11.4%, ablation procedure in 10.9%, implantation of a pacemaker in 2.5%, and a cardioverter-defibrillator in 8%. At multivariate analysis, the presence of symptoms [hazard ratio (HR) 2.5, P = .001] and age >50 years (HR 1.7, P = .016) were independent predictors of arrhythmic events, while inducibility of ventricular fibrillation at the electrophysiological study (HR 9.0, P < .001) was a predictor of VAs. CONCLUSIONS ILR detects arrhythmic events in nearly 30% of symptomatic BrS patients, leading to appropriate therapy in 70% of them. The most commonly detected arrhythmias are AAs and BAs, while VAs are detected only in 7% of cases. Symptom status can be used to guide ILR implantation.
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Affiliation(s)
- Marco Bergonti
- Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale, Via Tesserete 48, CH-6900 Lugano, Switzerland
| | - Frederic Sacher
- Hôpital Cardiologique du Haut-Lévêque, CHU Bordeaux, L’Institut de Rythmologie et modélisation Cardiaque (LIRYC), Université Bordeaux, Bordeaux, France
| | - Elena Arbelo
- Arrhythmia Section, Cardiology Department, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - Lia Crotti
- Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Istituto Auxologico Italiano, IRCCS, Milan, Italy
- Departement of Medicine and Surgery, University Milano Bicocca, Milan, Italy
| | - Avi Sabbag
- The Davidai Center for Rhythm Disturbances and Pacing, Chaim Sheba Medical Center, Tel Hashomer and the faculty of medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Michela Casella
- Cardiology and Arrhythmology Clinic, University Hospital ‘Ospedali Riuniti’, Ancona, Italy
- Department of Clinical, Special and Dental Sciences, Marche Polytechnic University, Ancona, Italy
| | - Johan Saenen
- Department of Cardiology, University Hospital Antwerp, Edegem, Belgium
| | - Andrea Rossi
- Arrhythmology Division, Fondazione Gabriele Monasterio CNR-Regione Toscana, via Giuseppe Moruzzi, Pisa, Italy
| | - Cinzia Monaco
- Hôpital Cardiologique du Haut-Lévêque, CHU Bordeaux, L’Institut de Rythmologie et modélisation Cardiaque (LIRYC), Université Bordeaux, Bordeaux, France
| | - Luigi Pannone
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Paolo Compagnucci
- Cardiology and Arrhythmology Clinic, University Hospital ‘Ospedali Riuniti’, Ancona, Italy
| | - Vincenzo Russo
- Cardiology Unit, Department of Translational Medical Sciences, University of Campania ‘Luigi Vanvitelli’, Monaldi Hospital, Naples, Italy
| | - Eyal Heller
- The Davidai Center for Rhythm Disturbances and Pacing, Chaim Sheba Medical Center, Tel Hashomer and the faculty of medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Amato Santoro
- Division of Cardiology, Cardio Thoracic and Vascular Department, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Paola Berne
- Department of Cardiology, Ospedale Santissima Annunziata, University of Sassari, Sassari, Italy
| | - Antonio Bisignani
- Institute of Cardiology, Catholic University of the Sacred Heart, Roma, Italy
| | - Enrico Baldi
- Arrhythmia and Electrophysiology, Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | | | - Federico Migliore
- Department of Cardiac, Thoracic and Vascular Sciences and Public Health, University of Padova, Padua, Italy
| | - Lorenzo Marcon
- Department of Clinical Electrophysiology & Cardiac Pacing, Centro Cardiologico Monzino IRCCS, Milan, Italy
- Department of Biomedical, Surgery and Dentist Sciences, University of Milan, Milan, Italy
| | - Federica Dagradi
- Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Irene Sfondrini
- Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale, Via Tesserete 48, CH-6900 Lugano, Switzerland
| | - Federico Landra
- Arrhythmology Division, Fondazione Gabriele Monasterio CNR-Regione Toscana, via Giuseppe Moruzzi, Pisa, Italy
- Division of Cardiology, Cardio Thoracic and Vascular Department, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Angelo Comune
- Cardiology Unit, Department of Translational Medical Sciences, University of Campania ‘Luigi Vanvitelli’, Monaldi Hospital, Naples, Italy
| | - María Cespón-Fernández
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Martina Nesti
- Division of Cardiology, Cardio Thoracic and Vascular Department, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Francesco Santoro
- Cardiothoracic Department, Cardiology Unit, Policlinico Riuniti, Foggia, Italy
| | | | - Alessandro Vicentini
- Arrhythmia and Electrophysiology, Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Sergio Conti
- Department of Cardiac Electrophysiology, ARNAS Ospedali Civico Di Cristina Benfratelli, Palermo, Italy
| | - Valentina Ribatti
- Department of Clinical Electrophysiology & Cardiac Pacing, Centro Cardiologico Monzino IRCCS, Milan, Italy
- Department of Biomedical, Surgery and Dentist Sciences, University of Milan, Milan, Italy
| | - Pedro Brugada
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Carlo de Asmundis
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Josep Brugada
- Arrhythmia Section, Cardiology Department, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - Claudio Tondo
- Department of Clinical Electrophysiology & Cardiac Pacing, Centro Cardiologico Monzino IRCCS, Milan, Italy
- Department of Biomedical, Surgery and Dentist Sciences, University of Milan, Milan, Italy
| | - Peter J Schwartz
- Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Michel Haissaguerre
- Hôpital Cardiologique du Haut-Lévêque, CHU Bordeaux, L’Institut de Rythmologie et modélisation Cardiaque (LIRYC), Université Bordeaux, Bordeaux, France
| | - Angelo Auricchio
- Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale, Via Tesserete 48, CH-6900 Lugano, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, via la Santa 1, 6962 Lugano, Switzerland
| | - Giulio Conte
- Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale, Via Tesserete 48, CH-6900 Lugano, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, via la Santa 1, 6962 Lugano, Switzerland
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Pflanz CP, Künzi M, Gallacher J, Bauermeister S. Distress and neuroticism as mediators of the effect of childhood and adulthood adversity on cognitive performance in the UK Biobank study. Sci Rep 2024; 14:8108. [PMID: 38582859 PMCID: PMC10998912 DOI: 10.1038/s41598-024-58510-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 03/30/2024] [Indexed: 04/08/2024] Open
Abstract
Childhood adversity and adulthood adversity affect cognition later in life. However, the mechanism through which adversity exerts these effects on cognition remains under-researched. We aimed to investigate if the effect of adversity on cognition was mediated by distress or neuroticism. The UK Biobank is a large, population-based, cohort study designed to investigate risk factors of cognitive health. Here, data were analysed using a cross-sectional design. Structural equation models were fitted to the data with childhood adversity or adulthood adversity as independent variables, distress and neuroticism as mediators and executive function and processing speed as latent dependent variables that were derived from the cognitive scores in the UK Biobank. Complete data were available for 64,051 participants in the childhood adversity model and 63,360 participants in the adulthood adversity model. Childhood adversity did not show a direct effect on processing speed. The effect of childhood adversity on executive function was partially mediated by distress and neuroticism. The effects of adulthood adversity on executive function and processing speed were both partially mediated by distress and neuroticism. In conclusion, distress and neuroticism mediated the deleterious effect of childhood and adulthood adversity on cognition and may provide a mechanism underlying the deleterious consequences of adversity.
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Affiliation(s)
- Chris Patrick Pflanz
- Dementias Platform UK, Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, OX3 7JX, UK.
| | - Morgane Künzi
- Dementias Platform UK, Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, OX3 7JX, UK
- Centre the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, Geneva, Switzerland
| | - John Gallacher
- Dementias Platform UK, Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, OX3 7JX, UK
| | - Sarah Bauermeister
- Dementias Platform UK, Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, OX3 7JX, UK
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28
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Heindorf M, Keller GB. Antipsychotic drugs selectively decorrelate long-range interactions in deep cortical layers. eLife 2024; 12:RP86805. [PMID: 38578678 PMCID: PMC10997332 DOI: 10.7554/elife.86805] [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] [Indexed: 04/06/2024] Open
Abstract
Psychosis is characterized by a diminished ability of the brain to distinguish externally driven activity patterns from self-generated activity patterns. Antipsychotic drugs are a class of small molecules with relatively broad binding affinity for a variety of neuromodulator receptors that, in humans, can prevent or ameliorate psychosis. How these drugs influence the function of cortical circuits, and in particular their ability to distinguish between externally and self-generated activity patterns, is still largely unclear. To have experimental control over self-generated sensory feedback, we used a virtual reality environment in which the coupling between movement and visual feedback can be altered. We then used widefield calcium imaging to determine the cell type-specific functional effects of antipsychotic drugs in mouse dorsal cortex under different conditions of visuomotor coupling. By comparing cell type-specific activation patterns between locomotion onsets that were experimentally coupled to self-generated visual feedback and locomotion onsets that were not coupled, we show that deep cortical layers were differentially activated in these two conditions. We then show that the antipsychotic drug clozapine disrupted visuomotor integration at locomotion onsets also primarily in deep cortical layers. Given that one of the key components of visuomotor integration in cortex is long-range cortico-cortical connections, we tested whether the effect of clozapine was detectable in the correlation structure of activity patterns across dorsal cortex. We found that clozapine as well as two other antipsychotic drugs, aripiprazole and haloperidol, resulted in a strong reduction in correlations of layer 5 activity between cortical areas and impaired the spread of visuomotor prediction errors generated in visual cortex. Our results are consistent with the interpretation that a major functional effect of antipsychotic drugs is a selective alteration of long-range layer 5-mediated communication.
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Affiliation(s)
- Matthias Heindorf
- Friedrich Miescher Institute for Biomedical ResearchBaselSwitzerland
| | - Georg B Keller
- Friedrich Miescher Institute for Biomedical ResearchBaselSwitzerland
- Faculty of Science, University of BaselBaselSwitzerland
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29
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Pöthe B, Conus P, Golay P. Impact of a family history of mental disorders on the characteristics of patients with early psychosis. Early Interv Psychiatry 2024. [PMID: 38572759 DOI: 10.1111/eip.13525] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/15/2024] [Accepted: 03/26/2024] [Indexed: 04/05/2024]
Abstract
AIM Children of parents with psychiatric illness have a higher risk of developing psychiatric disorders. This is particularly the case for psychoses and the evolution of these disorders could likely differ. The aim of this study was to study the impact of a first-degree and second-degree family history of psychiatric disorders (FHPD) on the characteristics of patients with early psychosis in a specialized programme. METHOD This research is a prospective study based on 408 patients aged 18-35 years enrolled in the Treatment and Early Intervention in Psychosis Program (TIPP) with a three-years follow-up. Various characteristics were compared between patients with first-degree-FHPD and those without, then between patients with 2nd degree-FHPD and those without. The influence of the number of parents with first or second degree FHPD on clinical characteristics was also studied. RESULTS Our results showed an influence of FHPD on the characteristics of patients presenting a first episode of psychosis. Over the 3 years of follow-up, patients with at least one second-degree relative showed more negative and depressive symptoms and poorer general functioning than patient who did not. The number of parents with first or second degree FHPD was also negatively associated with several clinical variables. CONCLUSION The results of this study confirm the existence of a distinct premorbid profile and a different evolution in patients with FHPD, which is not limited to first-degree relatives. This suggests the importance of specific needs that should be addressed during treatment.
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Affiliation(s)
- Barbara Pöthe
- General Psychiatry Service, Treatment and Early Intervention in Psychosis Program (TIPP-Lausanne), Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Philippe Conus
- General Psychiatry Service, Treatment and Early Intervention in Psychosis Program (TIPP-Lausanne), Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Philippe Golay
- General Psychiatry Service, Treatment and Early Intervention in Psychosis Program (TIPP-Lausanne), Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- Community Psychiatry Service, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- Institute of Psychology, Faculty of Social and Political Science, University of Lausanne, Lausanne, Switzerland
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30
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Lonati S, Rönkkö M, Antonakis J. Normality assumption in latent interaction models. Psychol Methods 2024:2024-69864-001. [PMID: 38573667 DOI: 10.1037/met0000657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Latent moderated structural equation (LMS) is one of the most common techniques for estimating interaction effects involving latent variables (i.e., XWITH command in Mplus). However, empirical applications of LMS often overlook that this estimation technique assumes normally distributed variables and that violations of this assumption may lead to seriously biased parameter estimates. Against this backdrop, we study the robustness of LMS to different shapes and sources of nonnormality and examine whether various statistical tests can help researchers detect such distributional misspecifications. In four simulations, we show that LMS can be severely biased when the latent predictors or the structural disturbances are nonnormal. On the contrary, LMS is unaffected by nonnormality originating from measurement errors. As a result, testing for the multivariate normality of observed indicators of the latent predictors can lead to erroneous conclusions, flagging distributional misspecifications in perfectly unbiased LMS results and failing to reject seriously biased results. To solve this issue, we introduce a novel Hausman-type specification test to assess the distributional assumptions of LMS and demonstrate its performance. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Affiliation(s)
- Sirio Lonati
- Department of People & Organisations, NEOMA Business School
| | - Mikko Rönkkö
- Jyvaskyla University School of Business and Economics, University of Jyvaskyla
| | - John Antonakis
- Department of Organizational Behavior, University of Lausanne
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31
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Lefebvre S, Gehrig G, Nadesalingam N, Nuoffer MG, Kyrou A, Wüthrich F, Walther S. The pathobiology of psychomotor slowing in psychosis: altered cortical excitability and connectivity. Brain 2024; 147:1423-1435. [PMID: 38537253 PMCID: PMC10994557 DOI: 10.1093/brain/awad395] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/23/2023] [Accepted: 11/03/2023] [Indexed: 04/06/2024] Open
Abstract
Psychomotor slowing is a frequent symptom of schizophrenia. Short-interval intracortical inhibition assessed by transcranial magnetic stimulation demonstrated inhibitory dysfunction in schizophrenia. The inhibitory deficit results from additional noise during information processing in the motor system in psychosis. Here, we tested whether cortical inhibitory dysfunction was linked to psychomotor slowing and motor network alterations. In this cross-sectional study, we included 60 patients with schizophrenia and psychomotor slowing determined by the Salpêtrière Retardation Rating Scale, 23 patients without slowing and 40 healthy control participants. We acquired single and double-pulse transcranial magnetic stimulation effects from the left primary motor cortex, resting-state functional connectivity and diffusion imaging on the same day. Groups were compared on resting motor threshold, amplitude of the motor evoked potentials, as well as short-interval intracortical inhibition. Regression analyses calculated the association between motor evoked potential amplitudes or cortical inhibition with seed-based resting-state functional connectivity from the left primary motor cortex and fractional anisotropy at whole brain level and within major motor tracts. In patients with schizophrenia and psychomotor slowing, we observed lower amplitudes of motor evoked potentials, while the short-interval intracortical inhibition/motor evoked potentials amplitude ratio was higher than in healthy controls, suggesting lower cortical inhibition in these patients. Patients without slowing also had lower amplitudes of motor evoked potentials. Across the combined patient sample, cortical inhibition deficits were linked to more motor coordination impairments. In patients with schizophrenia and psychomotor slowing, lower amplitudes of motor evoked potentials were associated with lower fractional anisotropy in motor tracts. Moreover, resting-state functional connectivity between the primary motor cortex, the anterior cingulate cortex and the cerebellum increased with stronger cortical inhibition. In contrast, in healthy controls and patients without slowing, stronger cortical inhibition was linked to lower resting-state functional connectivity between the left primary motor cortex and premotor or parietal cortices. Psychomotor slowing in psychosis is linked to less cortical inhibition and aberrant functional connectivity of the primary motor cortex. Higher neural noise in the motor system may drive psychomotor slowing and thus may become a treatment target.
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Affiliation(s)
- Stephanie Lefebvre
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, 3000 Bern, Switzerland
- Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine, 3000 Bern, Switzerland
| | - Gwendolyn Gehrig
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, 3000 Bern, Switzerland
| | - Niluja Nadesalingam
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, 3000 Bern, Switzerland
- Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine, 3000 Bern, Switzerland
| | - Melanie G Nuoffer
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, 3000 Bern, Switzerland
- Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine, 3000 Bern, Switzerland
- Graduate School for Health Sciences, University of Bern, 3000 Bern, Switzerland
| | - Alexandra Kyrou
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, 3000 Bern, Switzerland
| | - Florian Wüthrich
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, 3000 Bern, Switzerland
- Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine, 3000 Bern, Switzerland
| | - Sebastian Walther
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, 3000 Bern, Switzerland
- Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine, 3000 Bern, Switzerland
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Walde MG, Wenden B, Chuine I, Gessler A, Saurer M, Vitasse Y. Stable water isotopes reveal the onset of bud dormancy in temperate trees, whereas water content is a better proxy for dormancy release. Tree Physiol 2024; 44:tpae028. [PMID: 38417929 PMCID: PMC11016847 DOI: 10.1093/treephys/tpae028] [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] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 02/20/2024] [Indexed: 03/01/2024]
Abstract
Earlier spring growth onset in temperate forests is a visible effect of global warming that alters global water and carbon cycling. Consequently, it becomes crucial to accurately predict the future spring phenological shifts in vegetation under different climate warming scenarios. However, current phenological models suffer from a lack of physiological insights of tree dormancy and are rarely experimentally validated. Here, we sampled twig cuttings of five deciduous tree species at two climatically different locations (270 and 750 m a.s.l., ~ 2.3 °C difference) throughout the winter of 2019-20. Twig budburst success, thermal time to budburst, bud water content and short-term 2H-labelled water uptake into buds were quantified to link bud dormancy status with vascular water transport efficacy, with the objective of establishing connections between the dormancy status of buds and their effectiveness in vascular water transport. We found large differences in the dormancy status between species throughout the entire investigation period, likely reflecting species-specific environmental requirements to initiate and release dormancy, whereas only small differences in the dormancy status were found between the two studied sites. We found strong 2H-labelled water uptake into buds during leaf senescence, followed by a sharp decrease, which we ascribed to the initiation of endodormancy. However, surprisingly, we did not find a progressive increase in 2H-labelled water uptake into buds as winter advanced. Nonetheless, all examined tree species exhibited a consistent relationship between bud water content and dormancy status. Our results suggest that short-term 2H-labelled water uptake may not be a robust indicator of dormancy release, yet it holds promise as a method for tracking the induction of dormancy in deciduous trees. By contrast, bud water content emerges as a cost-effective and more reliable indicator of dormancy release.
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Affiliation(s)
- Manuel G Walde
- Ecosystem Ecology, Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903 Birmensdorf, Switzerland
| | - Bénédicte Wenden
- INRAE, Univ. Bordeaux, UMR Biologie du Fruit et Pathologie, 71 av. Edouard Bourlaux, 33140 Villenave d'Ornon, France
| | - Isabelle Chuine
- CEFE, Univ. Montpellier, CNRS, EPHE, IRD, 1919 route de Mende, 34293 Montpellier, France
| | - Arthur Gessler
- Ecosystem Ecology, Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903 Birmensdorf, Switzerland
- Institute of Terrestrial Ecosystems, ETH Zurich (Swiss Federal Institute of Technology), Universitätsstrasse 16, 8092 Zurich, Switzerland
| | - Matthias Saurer
- Ecosystem Ecology, Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903 Birmensdorf, Switzerland
| | - Yann Vitasse
- Ecosystem Ecology, Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903 Birmensdorf, Switzerland
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Riou J, Panczak R, Konstantinoudis G, Egger M. Area-level excess mortality in times of COVID-19 in Switzerland: geographical, socioeconomic and political determinants. Eur J Public Health 2024; 34:415-417. [PMID: 38268201 PMCID: PMC10990508 DOI: 10.1093/eurpub/ckad230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024] Open
Abstract
The coronavirus disease 2019 (COVID-19)-related excess mortality in Switzerland is well documented, but no study examined mortality at the small-area level. We analysed excess mortality in 2020 for 2141 Swiss municipalities using a Bayesian spatiotemporal model fitted to 2011-19 data. Areas most affected included the Ticino, the Romandie and the Northeast. Rural areas, municipalities within cross-border labour markets, of lower socioeconomic position and with less support for control measures in the popular vote on the COVID-19 Act had greater excess mortality. Particularly vulnerable municipalities require special efforts to mitigate the impact of pandemics.
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Affiliation(s)
- Julien Riou
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Radoslaw Panczak
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Garyfallos Konstantinoudis
- Department of Epidemiology and Biostatistics, School of Public Health, MRC Centre for Environment and Health, Imperial College London, London, UK
| | - Matthias Egger
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
- Centre for Infectious Disease Epidemiology and Research, University of Cape Town, Cape Town, South Africa
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Bardy TLC. Assessing health insurance literacy in Switzerland: first results from a measurement tool. Eur J Public Health 2024; 34:237-243. [PMID: 37873586 PMCID: PMC10990528 DOI: 10.1093/eurpub/ckad190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023] Open
Abstract
BACKGROUND Health insurance literacy (HIL) is crucial for individuals to make informed-decisions and navigate complex choice-based health insurance systems. However, there is a lack of evidence on HIL in countries outside the US, with Switzerland no exception. METHODS Using the HILM-CH, a survey instrument developed to measure HIL in Switzerland, this study first describes the answers to the HILM-CH. Second, the study uses ordinary least squares and quantile regressions to investigate the associations between the HIL score and demographic, socioeconomic, health, and preference factors in the German, French, and Italian Swiss regions. RESULTS A third of the population faces difficulties in finding health insurance information. Understanding it and managing the financial aspects of the Swiss health insurance system pose the biggest barriers to the population. The HIL score significantly and positively correlates with age and financial risk, while non-Swiss individuals have lower HIL scores. No association was found between HIL, gender, education and time preference. There is a small health gradient, with more doctor visits associated with higher HIL in the lowest quantiles of the HIL score. Similarly, wealthier individuals in the Swiss German part of Switzerland have a higher HIL when choosing their health insurance. CONCLUSION This study provides important insights into Swiss HIL and its associated factors. These findings contribute to the international literature on HIL and highlight the importance of understanding variations in HIL and various factors in choice-based health insurance systems.
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Affiliation(s)
- Tess L C Bardy
- Faculty of Health Sciences and Medicine and Center for Health, Policy and Economics, University of Lucerne, Alpenquai 4, Lucerne, 6005 Switzerland
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35
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Garin V, Diallo C, Tékété ML, Théra K, Guitton B, Dagno K, Diallo AG, Kouressy M, Leiser W, Rattunde F, Sissoko I, Touré A, Nébié B, Samaké M, Kholovà J, Frouin J, Pot D, Vaksmann M, Weltzien E, Témé N, Rami JF. Characterization of adaptation mechanisms in sorghum using a multireference back-cross nested association mapping design and envirotyping. Genetics 2024; 226:iyae003. [PMID: 38381593 PMCID: PMC10990433 DOI: 10.1093/genetics/iyae003] [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: 10/19/2023] [Accepted: 12/20/2023] [Indexed: 02/23/2024] Open
Abstract
Identifying the genetic factors impacting the adaptation of crops to environmental conditions is of key interest for conservation and selection purposes. It can be achieved using population genomics, and evolutionary or quantitative genetics. Here we present a sorghum multireference back-cross nested association mapping population composed of 3,901 lines produced by crossing 24 diverse parents to 3 elite parents from West and Central Africa-back-cross nested association mapping. The population was phenotyped in environments characterized by differences in photoperiod, rainfall pattern, temperature levels, and soil fertility. To integrate the multiparental and multi-environmental dimension of our data we proposed a new approach for quantitative trait loci (QTL) detection and parental effect estimation. We extended our model to estimate QTL effect sensitivity to environmental covariates, which facilitated the integration of envirotyping data. Our models allowed spatial projections of the QTL effects in agro-ecologies of interest. We utilized this strategy to analyze the genetic architecture of flowering time and plant height, which represents key adaptation mechanisms in environments like West Africa. Our results allowed a better characterization of well-known genomic regions influencing flowering time concerning their response to photoperiod with Ma6 and Ma1 being photoperiod-sensitive and the region of possible candidate gene Elf3 being photoperiod-insensitive. We also accessed a better understanding of plant height genetic determinism with the combined effects of phenology-dependent (Ma6) and independent (qHT7.1 and Dw3) genomic regions. Therefore, we argue that the West and Central Africa-back-cross nested association mapping and the presented analytical approach constitute unique resources to better understand adaptation in sorghum with direct application to develop climate-smart varieties.
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Affiliation(s)
- Vincent Garin
- Crop Physiology Laboratory, International Crops Research Institute for the Semi-Arid Tropics, Patancheru, 502 324, India
- CIRAD, UMR AGAP Institut, Montpellier, F-34398, France
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, F-34398, France
| | - Chiaka Diallo
- Sorghum Program, International Crops Research Institute for the Semi-Arid Tropics, Bamako, BP 320, Mali
- Département d’Enseignement et de Recherche des Sciences et Techniques Agricoles, Institut polytechnique rural de formation et de recherche appliquée de Katibougou, Koulikoro, BP 06, Mali
| | - Mohamed Lamine Tékété
- Institut d’Economie Rurale, Bamako, BP 262, Mali
- Faculté des Sciences et Techniques, Université des Sciences des Techniques et des Technologies de Bamako, Bamako, BP E 3206, Mali
| | | | - Baptiste Guitton
- CIRAD, UMR AGAP Institut, Montpellier, F-34398, France
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, F-34398, France
| | - Karim Dagno
- Institut d’Economie Rurale, Bamako, BP 262, Mali
| | | | | | - Willmar Leiser
- Sorghum Program, International Crops Research Institute for the Semi-Arid Tropics, Bamako, BP 320, Mali
| | - Fred Rattunde
- Agronomy Department, University of Wisconsin, Madison, WI 53705, WI, USA
| | - Ibrahima Sissoko
- Sorghum Program, International Crops Research Institute for the Semi-Arid Tropics, Bamako, BP 320, Mali
| | - Aboubacar Touré
- Sorghum Program, International Crops Research Institute for the Semi-Arid Tropics, Bamako, BP 320, Mali
| | - Baloua Nébié
- Dryland Crops Program, International Maize and Wheat Improvement Center (CIMMYT-Senegal) U/C CERAAS, Thiès, Po Box 3320, Senegal
| | - Moussa Samaké
- Faculté des Sciences et Techniques, Université des Sciences des Techniques et des Technologies de Bamako, Bamako, BP E 3206, Mali
| | - Jana Kholovà
- Crop Physiology Laboratory, International Crops Research Institute for the Semi-Arid Tropics, Patancheru, 502 324, India
- Department of Information Technologies, Faculty of Economics and Management, Czech University of Life Sciences, Prague, 165 00, Czech Republic
| | - Julien Frouin
- CIRAD, UMR AGAP Institut, Montpellier, F-34398, France
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, F-34398, France
| | - David Pot
- CIRAD, UMR AGAP Institut, Montpellier, F-34398, France
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, F-34398, France
| | - Michel Vaksmann
- CIRAD, UMR AGAP Institut, Montpellier, F-34398, France
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, F-34398, France
| | - Eva Weltzien
- Sorghum Program, International Crops Research Institute for the Semi-Arid Tropics, Bamako, BP 320, Mali
- Agronomy Department, University of Wisconsin, Madison, WI 53705, WI, USA
| | - Niaba Témé
- Institut d’Economie Rurale, Bamako, BP 262, Mali
| | - Jean-François Rami
- CIRAD, UMR AGAP Institut, Montpellier, F-34398, France
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, F-34398, France
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Nicolet A, Perraudin C, Krucien N, Wagner J, Peytremann-Bridevaux I, Marti J. Preferences for innovations in healthcare delivery models in the Swiss elderly population: a latent class, choice modelling study. Eur J Public Health 2024; 34:260-266. [PMID: 38243764 PMCID: PMC10990495 DOI: 10.1093/eurpub/ckae004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND With the increasing number of people affected by multiple chronic conditions, it is essential for public-health professionals to promote strategies addressing patient needs for coordinated care. We aim to explore preference heterogeneity for better-coordinated care delivery models in Swiss older adults, and identify profiles of individuals more open to healthcare reforms. METHODS A DCE (discrete choice experiment) survey was developed online and on paper for the Swiss adults aged 50+, following best practice. To elicit preferences, we estimated a latent class model allowing grouping individuals with similar preferences into distinct classes, and examined what background characteristics contributed to specific class membership. RESULTS The optimal model identified three classes with different openness to reforms. Class 1 (49%) members were concerned with premium increases and were in favour of integrated care structures with care managed by interprofessional teams. Individuals in class 2 (19%) were younger, open to reforms, and expressed the needs for radical changes within the Swiss healthcare system. Class 3 respondents (32%) were strongly reluctant to changes. CONCLUSIONS Our study goes beyond average preferences and identifies three distinct population profiles, a majority open to reforms on specific aspects of care delivery, a smallest group in favour radical changes, and a third strongly against changes. Therefore, tailored approaches around healthcare reforms are needed, e.g. explaining the role of interprofessional teams in coordinating care, electronic health records and insurance premium variation.
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Affiliation(s)
- Anna Nicolet
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Clémence Perraudin
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | | | - Joël Wagner
- Department of Actuarial Science, Faculty of Business and Economics (HEC), and Swiss Finance Institute, University of Lausanne, Lausanne, Switzerland
| | | | - Joachim Marti
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
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37
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Gschwind R, Petitjean M, Fournier C, Lao J, Clermont O, Nordmann P, Mellmann A, Denamur E, Poirel L, Ruppé E. Inter-phylum circulation of a beta-lactamase-encoding gene: a rare but observable event. Antimicrob Agents Chemother 2024; 68:e0145923. [PMID: 38441061 PMCID: PMC10989005 DOI: 10.1128/aac.01459-23] [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: 11/10/2023] [Accepted: 02/12/2024] [Indexed: 03/06/2024] Open
Abstract
Beta-lactamase-mediated degradation of beta-lactams is the most common mechanism of beta-lactam resistance in Gram-negative bacteria. Beta-lactamase-encoding genes can be transferred between closely related bacteria, but spontaneous inter-phylum transfers (between distantly related bacteria) have never been reported. Here, we describe an extended-spectrum beta-lactamase (ESBL)-encoding gene (blaMUN-1) shared between the Pseudomonadota and Bacteroidota phyla. An Escherichia coli strain was isolated from a patient in Münster (Germany). Its genome was sequenced. The ESBL-encoding gene (named blaMUN-1) was cloned, and the corresponding enzyme was characterized. The distribution of the gene among bacteria was investigated using the RefSeq Genomes database. The frequency and relative abundance of its closest homolog in the global microbial gene catalog (GMGC) were analyzed. The E. coli strain exhibited two distinct morphotypes. Each morphotype possessed two chromosomal copies of the blaMUN-1 gene, with one morphotype having two additional copies located on a phage-plasmid p0111. Each copy was located within a 7.6-kb genomic island associated with mobility. blaMUN-1 encoded for an extended-spectrum Ambler subclass A2 beta-lactamase with 43.0% amino acid identity to TLA-1. blaMUN-1 was found in species among the Bacteroidales order and in Sutterella wadsworthensis (Pseudomonadota). Its closest homolog in GMGC was detected frequently in human fecal samples. This is, to our knowledge, the first reported instance of inter-phylum transfer of an ESBL-encoding gene, between the Bacteroidota and Pseudomonadota phyla. Although the gene was frequently detected in the human gut, inter-phylum transfer was rare, indicating that inter-phylum barriers are effective in impeding the spread of ESBL-encoding genes, but not entirely impenetrable.
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Affiliation(s)
- Rémi Gschwind
- Université Paris Cité, INSERM, Université Sorbonne Paris Nord, IAME, Paris, France
| | - Marie Petitjean
- Université Paris Cité, INSERM, Université Sorbonne Paris Nord, IAME, Paris, France
- AP-HP, Hôpital Bichat, Laboratoire de Bactériologie, Paris, France
| | - Claudine Fournier
- Emerging Antibiotic Resistance, Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- Swiss National Reference Center for Emerging Antibiotic Resistance, Fribourg, Switzerland
- INSERM European Unit (IAME, France), University of Fribourg, Fribourg, Switzerland
| | - Julie Lao
- Université Paris Cité, INSERM, Université Sorbonne Paris Nord, IAME, Paris, France
| | - Olivier Clermont
- Université Paris Cité, INSERM, Université Sorbonne Paris Nord, IAME, Paris, France
| | - Patrice Nordmann
- Emerging Antibiotic Resistance, Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- Swiss National Reference Center for Emerging Antibiotic Resistance, Fribourg, Switzerland
- INSERM European Unit (IAME, France), University of Fribourg, Fribourg, Switzerland
- University of Lausanne, University Hospital Center, Lausanne, Switzerland
| | | | - Erick Denamur
- Université Paris Cité, INSERM, Université Sorbonne Paris Nord, IAME, Paris, France
- AP-HP, Hôpital Bichat, Laboratoire de Génétique Moléculaire, Paris, France
| | - Laurent Poirel
- Emerging Antibiotic Resistance, Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- Swiss National Reference Center for Emerging Antibiotic Resistance, Fribourg, Switzerland
- INSERM European Unit (IAME, France), University of Fribourg, Fribourg, Switzerland
- University of Lausanne, University Hospital Center, Lausanne, Switzerland
| | - Etienne Ruppé
- Université Paris Cité, INSERM, Université Sorbonne Paris Nord, IAME, Paris, France
- AP-HP, Hôpital Bichat, Laboratoire de Bactériologie, Paris, France
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38
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He Y, Delparente A, Jie CVML, Keller C, Humm R, Heer D, Collin L, Schibli R, Gobbi L, Grether U, Mu L. Preclinical Evaluation of the Reversible Monoacylglycerol Lipase PET Tracer (R)-[ 11C]YH132: Application in Drug Development and Neurodegenerative Diseases. Chembiochem 2024; 25:e202300819. [PMID: 38441502 DOI: 10.1002/cbic.202300819] [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: 12/04/2023] [Revised: 01/12/2024] [Indexed: 04/05/2024]
Abstract
Monoacylglycerol lipase (MAGL) plays a crucial role in the degradation of 2-arachidonoylglycerol (2-AG), one of the major endocannabinoids in the brain. Inhibiting MAGL could lead to increased levels of 2-AG, which showed beneficial effects on pain management, anxiety, inflammation, and neuroprotection. In the current study, we report the characterization of an enantiomerically pure (R)-[11C]YH132 as a novel MAGL PET tracer. It demonstrates an improved pharmacokinetic profile compared to its racemate. High in vitro MAGL specificity of (R)-[11C]YH132 was confirmed by autoradiography studies using mouse and rat brain sections. In vivo, (R)-[11C]YH132 displayed a high brain penetration, and high specificity and selectivity toward MAGL by dynamic PET imaging using MAGL knockout and wild-type mice. Pretreatment with a MAGL drug candidate revealed a dose-dependent reduction of (R)-[11C]YH132 accumulation in WT mouse brains. This result validates its utility as a PET probe to assist drug development. Moreover, its potential application in neurodegenerative diseases was explored by in vitro autoradiography using brain sections from animal models of Alzheimer's disease and Parkinson's disease.
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Affiliation(s)
- Yingfang He
- Institute of Pharmaceutical Sciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093, Zurich, Switzerland
- Present address: Institute of Radiation Medicine, Fudan University, Xietu Road 2094, Shanghai, 200032, China
| | - Aro Delparente
- Institute of Pharmaceutical Sciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093, Zurich, Switzerland
| | - Caitlin V M L Jie
- Institute of Pharmaceutical Sciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093, Zurich, Switzerland
| | - Claudia Keller
- Institute of Pharmaceutical Sciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093, Zurich, Switzerland
| | - Roland Humm
- Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, CH-4070, Basel, Switzerland
| | - Dominik Heer
- Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, CH-4070, Basel, Switzerland
| | - Ludovic Collin
- Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, CH-4070, Basel, Switzerland
| | - Roger Schibli
- Institute of Pharmaceutical Sciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093, Zurich, Switzerland
| | - Luca Gobbi
- Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, CH-4070, Basel, Switzerland
| | - Uwe Grether
- Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, CH-4070, Basel, Switzerland
| | - Linjing Mu
- Institute of Pharmaceutical Sciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093, Zurich, Switzerland
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Jeevannavar A, Narwani A, Matthews B, Spaak P, Brantschen J, Mächler E, Altermatt F, Tamminen M. Foundation species stabilize an alternative eutrophic state in nutrient-disturbed ponds via selection on microbial community. Front Microbiol 2024; 15:1310374. [PMID: 38628870 PMCID: PMC11019512 DOI: 10.3389/fmicb.2024.1310374] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 03/04/2024] [Indexed: 04/19/2024] Open
Abstract
Eutrophication due to nutrient addition can result in major alterations in aquatic ecosystem productivity. Foundation species, individually and interactively, whether present as invasive species or as instruments of ecosystem management and restoration, can have unwanted effects like stabilizing turbid eutrophic states. In this study, we used whole-pond experimental manipulations to investigate the impacts of disturbance by nutrient additions in the presence and absence of two foundation species: Dreissena polymorpha (a freshwater mussel) and Myriophyllum spicatum (a macrophyte). We tracked how nutrient additions to ponds changed the prokaryotic and eukaryotic communities, using 16S, 18S, and COI amplicon sequencing. The nutrient disturbance and foundation species imposed strong selection on the prokaryotic communities, but not on the microbial eukaryotic communities. The prokaryotic communities changed increasingly over time as the nutrient disturbance intensified. Post-disturbance, the foundation species stabilized the prokaryotic communities as observed by the reduced rate of change in community composition. Our analysis suggests that prokaryotic community change contributed both directly and indirectly to major changes in ecosystem properties, including pH and dissolved oxygen. Our work shows that nutrient disturbance and foundation species strongly affect the prokaryotic community composition and stability, and that the presence of foundation species can, in some cases, promote the emergence and persistence of a turbid eutrophic ecosystem state.
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Affiliation(s)
| | - Anita Narwani
- Department of Aquatic Ecology, Eawag, Dübendorf, Switzerland
| | - Blake Matthews
- Department of Fish Ecology and Evolution, Eawag, Kastanienbaum, Switzerland
| | - Piet Spaak
- Department of Aquatic Ecology, Eawag, Dübendorf, Switzerland
| | - Jeanine Brantschen
- Department of Aquatic Ecology, Eawag, Dübendorf, Switzerland
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
| | - Elvira Mächler
- Department of Aquatic Ecology, Eawag, Dübendorf, Switzerland
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
| | - Florian Altermatt
- Department of Aquatic Ecology, Eawag, Dübendorf, Switzerland
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
| | - Manu Tamminen
- Department of Biology, University of Turku, Turku, Finland
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Mirra A, Gamez Maidanskaia E, Levionnois OL, Spadavecchia C. How Is the Nociceptive Withdrawal Reflex Influenced by Increasing Doses of Propofol in Pigs? Animals (Basel) 2024; 14:1081. [PMID: 38612320 PMCID: PMC11010981 DOI: 10.3390/ani14071081] [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: 02/07/2024] [Revised: 03/26/2024] [Accepted: 04/01/2024] [Indexed: 04/14/2024] Open
Abstract
The nociceptive withdrawal reflex (NWR) is a physiological, polysynaptic spinal reflex occurring in response to noxious stimulations. Continuous NWR threshold (NWRt) tracking has been shown to be possibly useful in the depth of anesthesia assessment. The primary aim of this study was to describe how propofol modulates the NWRt over time in pigs. Five juvenile pigs (anesthetized three times) were included. An intravenous (IV) infusion of propofol (20 mg/kg/h) was started, and boli were administered to effect until intubation. Afterwards, the infusion was increased every ten minutes by 6 mg/kg/h, together with an IV bolus of 0.5 mg/kg, until reaching an electroencephalographic suppression ratio (SR) of between 10% and 30%. The NWRt was continuously monitored. For data analysis, the time span between 15 min following intubation and the end of propofol infusion was considered. Individual durations of propofol administration were divided into five equal time intervals for each pig (TI1-TI5). A linear regression between NWRt and TI was performed for each pig. Moreover, the baseline NWRt and slopes of the linear regression (b1) were compared among days using a Friedman Repeated Measures Analysis of Variance on Ranks. The NWRt always increased with the propofol dose (b1 = 4.71 ± 3.23; mean ± standard deviation). No significant differences were found between the baseline NWRt and the b1 values. Our results suggest that the NWRt may complement the depth of anesthesia assessment in pigs receiving propofol.
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Affiliation(s)
- Alessandro Mirra
- Section of Anesthesiology and Pain Therapy, Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland; (E.G.M.); (O.L.L.); (C.S.)
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Düring PM, Rosenberger P, Baumgarten L, Alarab F, Lechermann F, Strocov VN, Müller M. Tunable 2D Electron- and 2D Hole States Observed at Fe/SrTiO 3 Interfaces. Adv Mater 2024; 36:e2309217. [PMID: 38245856 DOI: 10.1002/adma.202309217] [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] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/27/2023] [Indexed: 01/22/2024]
Abstract
Oxide electronics provide the key concepts and materials for enhancing silicon-based semiconductor technologies with novel functionalities. However, a basic but key property of semiconductor devices still needs to be unveiled in its oxidic counterparts: the ability to set or even switch between two types of carriers-either negatively (n) charged electrons or positively (p) charged holes. Here, direct evidence for individually emerging n- or p-type 2D band dispersions in STO-based heterostructures is provided using resonant photoelectron spectroscopy. The key to tuning the carrier character is the oxidation state of an adjacent Fe-based interface layer: For Fe and FeO, hole bands emerge in the empty bandgap region of STO due to hybridization of Ti- and Fe- derived states across the interface, while for Fe3O4 overlayers, an 2D electron system is formed. Unexpected oxygen vacancy characteristics arise for the hole-type interfaces, which as of yet had been exclusively assigned to the emergence of 2DESs. In general, this finding opens up the possibility to straightforwardly switch the type of conductivity at STO interfaces by the oxidation state of a redox overlayer. This will extend the spectrum of phenomena in oxide electronics, including the realization of combined n/p-type all-oxide transistors or logic gates.
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Affiliation(s)
- Pia M Düring
- Fachbereich Physik, Universität Konstanz, 78457, Konstanz, Germany
| | - Paul Rosenberger
- Fachbereich Physik, Universität Konstanz, 78457, Konstanz, Germany
- Fakultät Physik, Technische Universität Dortmund, 44221, Dortmund, Germany
| | - Lutz Baumgarten
- Forschungszentrum Jülich GmbH, Peter Grünberg Institut (PGI-6), 52425, Jülich, Germany
| | - Fatima Alarab
- Paul Scherrer Institute, Swiss Light Source, Villingen PSI, CH-5232, Switzerland
| | - Frank Lechermann
- Institut für Theoretische Physik III, Ruhr-Universität Bochum, 44780, Bochum, Germany
| | - Vladimir N Strocov
- Paul Scherrer Institute, Swiss Light Source, Villingen PSI, CH-5232, Switzerland
| | - Martina Müller
- Fachbereich Physik, Universität Konstanz, 78457, Konstanz, Germany
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Enbergs N, Halabi EA, Goubet AG, Schleyer K, Fredrich IR, Kohler RH, Garris CS, Pittet MJ, Weissleder R. Pharmacological Polarization of Tumor-Associated Macrophages Toward a CXCL9 Antitumor Phenotype. Adv Sci (Weinh) 2024; 11:e2309026. [PMID: 38342608 DOI: 10.1002/advs.202309026] [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] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/16/2024] [Indexed: 02/13/2024]
Abstract
Tumor-associated macrophages (TAM) are a diverse population of myeloid cells that are often abundant and immunosuppressive in human cancers. CXCL9Hi TAM has recently been described to have an antitumor phenotype and is linked to immune checkpoint response. Despite the emerging understanding of the unique antitumor TAM phenotype, there is a lack of TAM-specific therapeutics to exploit this new biological understanding. Here, the discovery and characterization of multiple small-molecule enhancers of chemokine ligand 9 (CXCL9) and their targeted delivery in a TAM-avid systemic nanoformulation is reported. With this strategy, it is efficient encapsulation and release of multiple drug loads that can efficiently induce CXCL9 expression in macrophages, both in vitro and in vivo in a mouse tumor model. These observations provide a window into the molecular features that define TAM-specific states, an insight a novel therapeutic anticancer approach is used to discover.
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Affiliation(s)
- Noah Enbergs
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA, 02114, USA
| | - Elias A Halabi
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA, 02114, USA
| | - Anne-Gaëlle Goubet
- Department of Pathology and Immunology, University of Geneva, Geneva, 1211, Switzerland
- AGORA Cancer Center, Swiss Cancer Center Leman, Lausanne, 1011, Switzerland
| | - Kelton Schleyer
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA, 02114, USA
| | - Ina R Fredrich
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA, 02114, USA
| | - Rainer H Kohler
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA, 02114, USA
| | - Christopher S Garris
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA, 02114, USA
| | - Mikaël J Pittet
- Department of Pathology and Immunology, University of Geneva, Geneva, 1211, Switzerland
- AGORA Cancer Center, Swiss Cancer Center Leman, Lausanne, 1011, Switzerland
- Ludwig Institute for Cancer Research, Lausanne, 1005, Switzerland
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA, 02114, USA
- Department of Systems Biology, Harvard Medical School, 200 Longwood Ave, Boston, MA, 02115, USA
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43
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Schüttel M, Will E, Sangouard G, Zarda A, Habeshian S, Nielsen AL, Heinis C. Solid-phase peptide synthesis in 384-well plates. J Pept Sci 2024; 30:e3555. [PMID: 38220145 DOI: 10.1002/psc.3555] [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: 07/06/2023] [Revised: 08/31/2023] [Accepted: 11/03/2023] [Indexed: 01/16/2024]
Abstract
Newer solid-phase peptide synthesis and release strategies enable the production of short peptides with high purity, allowing direct screening for desired bioactivity without prior chromatographic purification. However, the maximum number of peptides that can currently be synthesized per microplate reactor is 96, allowing the parallel synthesis of 384 peptides in modern devices that have space for 4 microplate reactors. To synthesize larger numbers of peptides, we modified a commercially available peptide synthesizer to enable the production of peptides in 384-well plates, which allows the synthesis of 1,536 peptides in one run (4 × 384 peptides). We report new hardware components and customized software that allowed for the synthesis of 1,536 short peptides in good quantity (average > 0.5 μmol), at high concentration (average > 10 mM), and decent purity without purification (average > 80%). The high-throughput peptide synthesis, which we developed with peptide drug development in mind, may be widely used for peptide library synthesis and screening, antibody epitope scanning, epitope mimetic development, or protease/kinase substrate screening.
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Affiliation(s)
- Mischa Schüttel
- Institute of Chemical Sciences and Engineering, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Edward Will
- Institute of Chemical Sciences and Engineering, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Gontran Sangouard
- Institute of Chemical Sciences and Engineering, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Anne Zarda
- Institute of Chemical Sciences and Engineering, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Sevan Habeshian
- Institute of Chemical Sciences and Engineering, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Alexander L Nielsen
- Institute of Chemical Sciences and Engineering, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Christian Heinis
- Institute of Chemical Sciences and Engineering, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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44
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Rathod M, Franz H, Beyersdorfer V, Wanuske MT, Leal-Fischer K, Hanns P, Stüdle C, Zimmermann A, Buczak K, Schinner C, Spindler V. DPM1 modulates desmosomal adhesion and epidermal differentiation through SERPINB5. J Cell Biol 2024; 223:e202305006. [PMID: 38477878 PMCID: PMC10937187 DOI: 10.1083/jcb.202305006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 11/30/2023] [Accepted: 01/23/2024] [Indexed: 03/14/2024] Open
Abstract
Glycosylation is essential to facilitate cell-cell adhesion and differentiation. We determined the role of the dolichol phosphate mannosyltransferase (DPM) complex, a central regulator for glycosylation, for desmosomal adhesive function and epidermal differentiation. Deletion of the key molecule of the DPM complex, DPM1, in human keratinocytes resulted in weakened cell-cell adhesion, impaired localization of the desmosomal components desmoplakin and desmoglein-2, and led to cytoskeletal organization defects in human keratinocytes. In a 3D organotypic human epidermis model, loss of DPM1 caused impaired differentiation with abnormally increased cornification, reduced thickness of non-corneal layers, and formation of intercellular gaps in the epidermis. Using proteomic approaches, SERPINB5 was identified as a DPM1-dependent interaction partner of desmoplakin. Mechanistically, SERPINB5 reduced desmoplakin phosphorylation at serine 176, which was required for strong intercellular adhesion. These results uncover a novel role of the DPM complex in connecting desmosomal adhesion with epidermal differentiation.
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Affiliation(s)
- Maitreyi Rathod
- Department of Biomedicine, University of Basel, Basel, Switzerland
- Institute of Anatomy and Experimental Morphology, University Clinic Hamburg-Eppendorf, Hamburg, Germany
| | - Henriette Franz
- Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Vivien Beyersdorfer
- Department of Biomedicine, University of Basel, Basel, Switzerland
- Institute of Anatomy and Experimental Morphology, University Clinic Hamburg-Eppendorf, Hamburg, Germany
| | | | | | - Pauline Hanns
- Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Chiara Stüdle
- Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Aude Zimmermann
- Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Katarzyna Buczak
- Proteomics Core Facility, Biocentre, University of Basel, Basel, Switzerland
| | - Camilla Schinner
- Department of Biomedicine, University of Basel, Basel, Switzerland
- Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
| | - Volker Spindler
- Department of Biomedicine, University of Basel, Basel, Switzerland
- Institute of Anatomy and Experimental Morphology, University Clinic Hamburg-Eppendorf, Hamburg, Germany
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45
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Künzler-Heule P, Schmidt AJ, Fierz K, Battegay M, Engberg S, Kouyos RD, Nöstlinger C, Stöckle M, Béguelin C, Delaloye J, Schmid P, Rougemont M, Braun DL, Fehr JS, Nicca D. Exploring group differences in the response to a sexual risk reduction intervention to prevent hepatitis C virus reinfection in HIV-infected MSM: a mixed-methods study. AIDS Care 2024; 36:442-451. [PMID: 37182220 DOI: 10.1080/09540121.2023.2208318] [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: 05/05/2021] [Accepted: 04/21/2023] [Indexed: 05/16/2023]
Abstract
To prevent hepatitis C virus (HCV) reinfection, within the Swiss HCVree Trial, a preventive risk reduction intervention was implemented alongside curative treatment. Formative qualitative research identified three response patterns to the intervention. This mixed-methods study's aim was to cross-validate group differences in (a) the content of sexual risk reduction goals set during intervention and (b) the extent of their behavioural change in condomless anal intercourse with non-steady partners (nsCAI), sexualised and intravenous drug use at start and six-month post-intervention. Qualitative thematic analysis was used to summarise goal setting domains. Quantitative descriptive analysis was used to evaluate group differences based on assumptions of the group descriptions. Results largely confirmed assumptions on inter-group response differences in goal setting and behaviour: as expected group 1 Avoid risks showed the lowest HCV risk profile with changes in nsCAI. Group 2 Minimize-risks and Group 3 Accept-risks showed unchanged nsCAI. Group 3 had the highest HCV risk profile. Differences in their goal preferences (1: condom use; 2 reduction blood exposure; 3 safer dating) highlight diversity in attitudes to behavioural change. Our results improve understanding of variability in intervention responses such as changes in attitudes and behaviour. This provides evidence for intervention tailoring and outcome measurement.
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Affiliation(s)
- Patrizia Künzler-Heule
- Nursing Science, Department Public Health, Medical Faculty, University of Basel, Basel, Switzerland
- Department of Gastroenterology/Hepatology and Department of Nursing Development, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Axel J Schmidt
- Division of Infectious Diseases, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
- Sigma Research, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Katharina Fierz
- Zurich University of Applied Sciences (ZUAS), Winterthur, Switzerland
| | - Manuel Battegay
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel, Basel, Switzerland
- Medical Faculty, University of Basel, Basel, Switzerland
| | - Sandra Engberg
- Nursing Science, Department Public Health, Medical Faculty, University of Basel, Basel, Switzerland
- University of Pittsburgh, School of Nursing, Pittsburgh, PA, USA
| | - Roger D Kouyos
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, Zurich, Switzerland
| | | | - Marcel Stöckle
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel, Basel, Switzerland
- Medical Faculty, University of Basel, Basel, Switzerland
| | - Charles Béguelin
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Julie Delaloye
- Intensive Care Unit, Department of Intensive Care Medicine, University of Lausanne and University Hospital Center, Lausanne, Switzerland
| | - Patrick Schmid
- Division of Infectious Diseases, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Mathieu Rougemont
- Primary Care Medicine Unit, University Hospital of Geneva, Geneva, Switzerland
| | - Dominique L Braun
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, Zurich, Switzerland
- Institute of Medical Virology, University of Zurich, Zurich, Switzerland
| | - Jan S Fehr
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, Zurich, Switzerland
- Department of Public & Global Health, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Dunja Nicca
- Nursing Science, Department Public Health, Medical Faculty, University of Basel, Basel, Switzerland
- Department of Public & Global Health, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
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46
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Rodrigues MA, Dauphin-Villemant C, Paris M, Kapun M, Mitchell ED, Kerdaffrec E, Flatt T. Germline proliferation trades off with lipid metabolism in Drosophila. Evol Lett 2024; 8:295-310. [PMID: 38525032 PMCID: PMC10959481 DOI: 10.1093/evlett/qrad059] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/22/2023] [Accepted: 11/06/2023] [Indexed: 03/26/2024] Open
Abstract
Little is known about the metabolic basis of life-history trade-offs but lipid stores seem to play a pivotal role. During reproduction, an energetically highly costly process, animals mobilize fat reserves. Conversely, reduced or curtailed reproduction promotes lipid storage in many animals. Systemic signals from the gonad seem to be involved: Caenorhabditis elegans lacking germline stem cells display endocrine changes, have increased fat stores and are long-lived. Similarly, germline-ablated Drosophila melanogaster exhibit major somatic physiological changes, but whether and how germline loss affects lipid metabolism remains largely unclear. Here we show that germline-ablated flies have profoundly altered energy metabolism at the transcriptional level and store excess fat as compared to fertile flies. Germline activity thus constrains or represses fat accumulation, and this effect is conserved between flies and worms. More broadly, our findings confirm that lipids represent a major energetic currency in which costs of reproduction are paid.
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Affiliation(s)
- Marisa A Rodrigues
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | | | - Margot Paris
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Martin Kapun
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- Central Research Laboratories, Natural History Museum Vienna, Vienna, Austria
- Division of Cell and Developmental Biology, Medical University of Vienna, Vienna, Austria
| | - Esra Durmaz Mitchell
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Envel Kerdaffrec
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Thomas Flatt
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
- Department of Biology, University of Fribourg, Fribourg, Switzerland
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47
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Meier T, Stephens JE, Haase CM. Feelings in words: Emotion word use and cardiovascular reactivity in marital interactions. Emotion 2024; 24:733-744. [PMID: 37768569 DOI: 10.1037/emo0001299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Putting feelings into words is often thought to be beneficial. Few studies, however, have examined associations between natural emotion word use and cardiovascular reactivity. This laboratory-based study examined emotion word use (i.e., from computerized text analysis) and cardiovascular reactivity (i.e., interbeat interval changes from baseline) across two interaction contexts (i.e., conflict and positive conversations) in 49 mixed-sex married couples (age: M = 43.11, SD = 9.20) from diverse socioeconomic backgrounds. We focused on both frequency (i.e., relative proportion of emotion words) and diversity (i.e., relative proportion of unique emotion words) of emotion words. Data were collected between 2015 and 2017 and analyzed treating both partners and conversations as repeated measures, resulting in 196 observations overall (four per dyad). Findings showed that (a) when spouses used more negative emotion words (especially anger), they showed higher cardiovascular reactivity. This finding was robust when controlling for covariates; generalized across gender, interaction contexts, and socioeconomic status. Moreover, (b) when spouses used a more diverse negative emotion vocabulary, they showed higher cardiovascular reactivity, but this was not robust when controlling for negative emotion word frequency. Associations between (c) positive emotion word use and cardiovascular reactivity were not statistically significant. Verbalizing negative emotions thus seems to go along with higher cardiovascular reactivity, at least in the short term. Replication is needed across other relationship types, genders, and sexual orientations. These findings highlight emotion word use as an indicator of cardiovascular reactivity, which has implications for the identification of potential health risks that emerge during marital interactions. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Affiliation(s)
- Tabea Meier
- School of Education and Social Policy, Northwestern University
| | | | - Claudia M Haase
- School of Education and Social Policy, Northwestern University
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48
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Dauphin B, Peter M. Tracking signatures of selection in natural populations of ectomycorrhizal fungi - progress, challenges, and prospects. New Phytol 2024; 242:384-388. [PMID: 38268341 DOI: 10.1111/nph.19553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/11/2024] [Indexed: 01/26/2024]
Affiliation(s)
- Benjamin Dauphin
- Swiss Federal Research Institute WSL, Zürcherstrasse 111, Birmensdorf, 8903, Switzerland
| | - Martina Peter
- Swiss Federal Research Institute WSL, Zürcherstrasse 111, Birmensdorf, 8903, Switzerland
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49
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Iunius LA, Vilpert S, Meier C, Jox RJ, Borasio GD, Maurer J. Advance Care Planning: A Story of Trust Within the Family. J Appl Gerontol 2024; 43:349-362. [PMID: 37984553 PMCID: PMC10875907 DOI: 10.1177/07334648231214905] [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: 04/11/2023] [Revised: 10/24/2023] [Accepted: 10/28/2023] [Indexed: 11/22/2023] Open
Abstract
As the family usually plays a central role at the end of life, the quality of family relationships may influence how individuals approach advance care planning (ACP). Our study investigates the associations of trust in relatives with regard to end-of-life (EOL) issues-used as a proxy measure of family relationship quality-with individuals' engagement in EOL discussions, advance directive (AD) awareness, approval and completion, and designation of a healthcare proxy. Using nationally representative data of adults aged 55 years and over from wave 6 (2015) of the Survey of Health, Ageing, and Retirement in Europe (SHARE) in Switzerland (n = 1911), we show that complete trust in relatives is related to higher engagement in ACP. Subject to patient consent, the family should, therefore, be included in the ACP process, as such practice could enhance patient-centered EOL care and quality of life at the end of life.
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Affiliation(s)
- Lory A. Iunius
- Faculty of Business and Economics (HEC), University of Lausanne, Switzerland
| | - Sarah Vilpert
- Faculty of Business and Economics (HEC), University of Lausanne, Switzerland
- Swiss Centre of Expertise in the Social Sciences (FORS), Lausanne, Switzerland
| | - Clément Meier
- Faculty of Business and Economics (HEC), University of Lausanne, Switzerland
- Swiss Centre of Expertise in the Social Sciences (FORS), Lausanne, Switzerland
| | - Ralf J. Jox
- Palliative and Supportive Care Service, Lausanne University Hospital and University of Lausanne, Switzerland
- Institute of Humanities in Medicine, Lausanne University Hospital and University of Lausanne, Switzerland
| | - Gian Domenico Borasio
- Palliative and Supportive Care Service, Lausanne University Hospital and University of Lausanne, Switzerland
| | - Jürgen Maurer
- Faculty of Business and Economics (HEC), University of Lausanne, Switzerland
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50
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Hautekiet C, Langerock N, Vergauwe E. Accessibility of working memory representations in the focus of attention: Heightened or reduced? J Exp Psychol Learn Mem Cogn 2024; 50:562-579. [PMID: 37824262 DOI: 10.1037/xlm0001223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Many researchers agree that information residing in the focus of attention in working memory benefits from a boost in memory strength and activation, as well as heightened accessibility. However, recent studies have questioned this heightened accessibility. More specifically, these recent studies found reduced accessibility for an item in the focus of attention compared to another item in working memory, which was referred to as an "inhibition-of-return-like" effect. Our study aimed to provide a detailed examination of the accessibility of information in the focus of attention. Across a series of experiments, varying task characteristics related to the time course of the effect (Experiments 2-3) and the potential role of response inhibition (Experiments 4a-4b), we repeatedly failed to find evidence for an inhibition-of-return-like effect. Instead, we mostly found heightened accessibility for an item in the focus of attention. Given that an inhibition-of-return-like effect seems to be limited to a very specific task condition, reduced accessibility of information in the focus of attention appears to be far from a general phenomenon. Therefore, based on our findings, we propose that information in the focus of attention generally benefits from heightened accessibility, although there may be factors, most likely unrelated to the functioning of the focus of attention, that could sometimes mask this and even result in data patterns that are consistent with reduced accessibility. The theoretical implications for the focus of attention and working memory are discussed. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Affiliation(s)
- Caro Hautekiet
- Faculty of Psychology and Educational Sciences, University of Geneva
| | - Naomi Langerock
- Faculty of Psychology and Educational Sciences, University of Geneva
| | - Evie Vergauwe
- Faculty of Psychology and Educational Sciences, University of Geneva
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