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Dumont J, Bou-Gharios J, Keller A, Chambrelant I, Pamart G, Mascaux C, Falcoz PE, Antoni D, Olland A, Pietta GA, Noël G. Impact of adjuvant radiotherapy and chemotherapy on thymoma. Cancer Radiother 2024; 28:174-181. [PMID: 38182482 DOI: 10.1016/j.canrad.2023.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 01/07/2024]
Abstract
PURPOSE Thymoma is a rare tumour. The most common treatment for thymoma is surgical resection, while the use of radiotherapy and chemotherapy remains controversial. PATIENTS AND METHODS We conducted a monocentric observational study of 31 patients diagnosed with thymoma from June 2004 to July 2020 at cancer centre in Strasbourg, France. We analysed the outcomes of the patients. RESULTS The 2- and 5- year locoregional relapse-free survival rates were 96.3% (95% confidence interval [CI]: 76.5-99.5%) and 68.0% (95% CI: 43.8-83.5%), respectively. Radiotherapy and chemotherapy significantly improved local tumour control (P=0.0008 and 0.04, respectively), while a larger initial tumour size significantly worsened local control rates (P=0.04). The 5- and 10-year overall survival rates were 87.1% (95% CI: 69.2-95%) and 81.7% (95% CI: 60.3-92.2%), respectively. The median overall survival was not reached, and no favourable factor was retrieved. For relapsed patients, the median overall survival after relapse was 115 months. CONCLUSION Despite the inherent limitations of retrospective studies with a limited patient sample size, we demonstrated that chemotherapy and radiotherapy in addition to surgery were effective in achieving local control and contributed to improving patient outcomes in thymoma. Notably, an aggressive treatment strategy at the time of relapse resulted in favourable outcomes for retreated patients.
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Affiliation(s)
- J Dumont
- Chest Diseases Department, Hôpital Hautepierre, hôpitaux universitaires de Strasbourg, 1, place de l'Hôpital, 67000 Strasbourg, France
| | - J Bou-Gharios
- Radiation Therapy Department, Institut de cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - A Keller
- Radiation Therapy Department, Oncopole, Toulouse, France
| | - I Chambrelant
- Radiation Therapy Department, Institut de cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - G Pamart
- Chest Diseases Department, Hôpital Hautepierre, hôpitaux universitaires de Strasbourg, 1, place de l'Hôpital, 67000 Strasbourg, France
| | - C Mascaux
- Chest Diseases Department, Hôpital Hautepierre, hôpitaux universitaires de Strasbourg, 1, place de l'Hôpital, 67000 Strasbourg, France
| | - P-E Falcoz
- Department of Thoracic Surgery, Hôpital Hautepierre, hôpitaux universitaires de Strasbourg, 1, place de l'Hôpital, 67200 Strasbourg, France
| | - D Antoni
- Radiation Therapy Department, Institut de cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - A Olland
- Department of Thoracic Surgery, Hôpital Hautepierre, hôpitaux universitaires de Strasbourg, 1, place de l'Hôpital, 67200 Strasbourg, France
| | - G A Pietta
- Radiation Therapy Department, Institut de cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - G Noël
- Radiation Therapy Department, Institut de cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France.
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Weinhold A, Grüner E, Keller A. Bumble bee microbiota shows temporal succession and increase of lactic acid bacteria when exposed to outdoor environments. Front Cell Infect Microbiol 2024; 14:1342781. [PMID: 38500505 PMCID: PMC10945022 DOI: 10.3389/fcimb.2024.1342781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 02/19/2024] [Indexed: 03/20/2024] Open
Abstract
Question The large earth bumble bee (Bombus terrestris) maintains a social core gut-microbiota, similar as known from the honey bee, which plays an important role for host health and resistance. Experiments under laboratory conditions with commercial hives are limited to vertically transmitted microbes and neglect influences of environmental factors or external acquisition of microbes. Various environmental and landscape-level factors may have an impact on the gut-microbiota of pollinating insects, with consequences for pollinator health and fitness in agroecosystems. Still, it is not fully clear whether access to different flower diversities will have a significant influence on the bumble bee microbiota. Here, we tested in a semi-field experiment if the bumble bee microbiota changes over time when exposed to different flower diversities within outdoor flight cages. We used commercial hives to distinguish between vertically and horizontally transmitted bacteria, respectively from the nest environment or the exposed outside environment. Result The sequential sampling of foraging workers over a period of 35 days indicated a temporal progression of the bumble bee microbiota when placed outside. The microbiota increased in diversity and changed in composition and variability over time. We observed a major increase in relative abundance of the families Lactobacillaceae, Bifidobacteriaceae and Weeksellaceae. In contrast, major core-taxa like Snodgrassella and Gilliamella declined in their relative abundance over time. The genus Lactobacillus showed a high diversity and strain specific turnover, so that only specific ASVs showed an increase over time, while others had a more erratic occurrence pattern. Exposure to different flower diversities had no significant influence on the progression of the bumble bee microbiota. Conclusion The bumble bee microbiota showed a dynamic temporal succession with distinct compositional changes and diversification over time when placed outdoor. The exposure of bumble bees to environmental conditions, or environmental microbes, increases dissimilarity and changes the gut-community composition. This shows the importance of environmental influences on the temporal dynamic and progression of the bumble bee microbiota.
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Affiliation(s)
- Arne Weinhold
- Cellular and Organismic Networks, Faculty of Biology, Center for Organismic Adaptation, Ludwig-Maximilians-Universität München, Munich, Germany
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Quaresma A, Ankenbrand MJ, Garcia CAY, Rufino J, Honrado M, Amaral J, Brodschneider R, Brusbardis V, Gratzer K, Hatjina F, Kilpinen O, Pietropaoli M, Roessink I, van der Steen J, Vejsnæs F, Pinto MA, Keller A. Semi-automated sequence curation for reliable reference datasets in ITS2 vascular plant DNA (meta-)barcoding. Sci Data 2024; 11:129. [PMID: 38272945 PMCID: PMC10810873 DOI: 10.1038/s41597-024-02962-5] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 01/12/2024] [Indexed: 01/27/2024] Open
Abstract
One of the most critical steps for accurate taxonomic identification in DNA (meta)-barcoding is to have an accurate DNA reference sequence dataset for the marker of choice. Therefore, developing such a dataset has been a long-term ambition, especially in the Viridiplantae kingdom. Typically, reference datasets are constructed with sequences downloaded from general public databases, which can carry taxonomic and other relevant errors. Herein, we constructed a curated (i) global dataset, (ii) European crop dataset, and (iii) 27 datasets for the EU countries for the ITS2 barcoding marker of vascular plants. To that end, we first developed a pipeline script that entails (i) an automated curation stage comprising five filters, (ii) manual taxonomic correction for misclassified taxa, and (iii) manual addition of newly sequenced species. The pipeline allows easy updating of the curated datasets. With this approach, 13% of the sequences, corresponding to 7% of species originally imported from GenBank, were discarded. Further, 259 sequences were manually added to the curated global dataset, which now comprises 307,977 sequences of 111,382 plant species.
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Affiliation(s)
- Andreia Quaresma
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, S/N, Edifício FC4, 4169-007, Porto, Portugal
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, Vila do Conde, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Vila do Conde, Portugal
| | - Markus J Ankenbrand
- Center for Computational and Theoretical Biology, Faculty of Biology, Julius-Maximilians-Universität Würzburg, Klara-Oppenheimer-Weg 32, 97074, Würzburg, Germany
| | - Carlos Ariel Yadró Garcia
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - José Rufino
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
- Research Centre in Digitalization and Intelligent Robotics (CeDRI), Instituto Politécnico de Bragança, Bragança, Portugal
| | - Mónica Honrado
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Joana Amaral
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Robert Brodschneider
- Institute of Biology, University of Graz, Universitätsplatz 2, 8010, Graz, Austria
| | - Valters Brusbardis
- Latvian Beekeepers' Association (LBA), Rigas iela 22, LV-3004, Jelgava, Latvia
| | - Kristina Gratzer
- Institute of Biology, University of Graz, Universitätsplatz 2, 8010, Graz, Austria
| | - Fani Hatjina
- Ellinikos Georgikos Organismos DIMITRA (ELGO- DIMITRA), Kourtidou 56-58, GR-11145, Athina, Greece
| | - Ole Kilpinen
- Danish Beekeepers Association (DBF), Fulbyvej 15, DK-4180, Sorø, Denmark
| | - Marco Pietropaoli
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri" (IZSLT), Via Appia Nuova 1411, IT-00178, Roma, Italy
| | - Ivo Roessink
- Wageningen Environmental Research, WageningenUniversity&Research, Droevendaalsesteeg 3, 6700 AA, Wageningen, Netherlands
| | | | - Flemming Vejsnæs
- Danish Beekeepers Association (DBF), Fulbyvej 15, DK-4180, Sorø, Denmark
| | - M Alice Pinto
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Alexander Keller
- Cellular and Organismic Interactions, Biocenter, Faculty of Biology, Ludwig-Maximilians-Universität München, Großhaderner Str. 2-4, 82152, Planegg-Martinsried, Germany.
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Steffan SA, Dharampal PS, Kueneman JG, Keller A, Argueta-Guzmán MP, McFrederick QS, Buchmann SL, Vannette RL, Edlund AF, Mezera CC, Amon N, Danforth BN. Microbes, the 'silent third partners' of bee-angiosperm mutualisms. Trends Ecol Evol 2024; 39:65-77. [PMID: 37940503 DOI: 10.1016/j.tree.2023.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 11/10/2023]
Abstract
While bee-angiosperm mutualisms are widely recognized as foundational partnerships that have shaped the diversity and structure of terrestrial ecosystems, these ancient mutualisms have been underpinned by 'silent third partners': microbes. Here, we propose reframing the canonical bee-angiosperm partnership as a three-way mutualism between bees, microbes, and angiosperms. This new conceptualization casts microbes as active symbionts, processing and protecting pollen-nectar provisions, consolidating nutrients for bee larvae, enhancing floral attractancy, facilitating plant fertilization, and defending bees and plants from pathogens. In exchange, bees and angiosperms provide their microbial associates with food, shelter, and transportation. Such microbial communities represent co-equal partners in tripartite mutualisms with bees and angiosperms, facilitating one of the most important ecological partnerships on land.
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Affiliation(s)
- Shawn A Steffan
- US Department of Agriculture, Agricultural Research Service, 1575 Linden Drive, Madison, WI 53706, USA; Department of Entomology, University of Wisconsin, 1630 Linden Drive, Madison, WI 53706, USA.
| | - Prarthana S Dharampal
- Department of Entomology, University of Wisconsin, 1630 Linden Drive, Madison, WI 53706, USA; Biology Department, McHenry County College, 8900 Northwest Hwy #14, Crystal Lake, IL 60012, USA
| | - Jordan G Kueneman
- Department of Entomology, Cornell University, Comstock Hall, 2126, Ithaca, NY 14853, USA
| | - Alexander Keller
- Cellular and Organismic Networks, Faculty of Biology, Ludwig-Maximilians-Universität München, Martinsried, Germany
| | | | - Quinn S McFrederick
- Department of Entomology, University of California Riverside, Riverside, CA 92521, USA
| | - Stephen L Buchmann
- Department of Entomology, University of Arizona, Tucson, AZ 85721, USA; Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
| | - Rachel L Vannette
- Department of Entomology and Nematology, University of California, Davis, Davis, CA 95616, USA
| | - Anna F Edlund
- Department of Biology, Bethany College, 31 E Campus Drive, Bethany, WV 26032, USA
| | - Celeste C Mezera
- Department of Entomology, University of Wisconsin, 1630 Linden Drive, Madison, WI 53706, USA
| | - Nolan Amon
- Department of Entomology, University of Wisconsin, 1630 Linden Drive, Madison, WI 53706, USA
| | - Bryan N Danforth
- Department of Entomology, Cornell University, Comstock Hall, 2126, Ithaca, NY 14853, USA
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Faist H, Ankenbrand MJ, Sickel W, Hentschel U, Keller A, Deeken R. Opportunistic Bacteria of Grapevine Crown Galls Are Equipped with the Genomic Repertoire for Opine Utilization. Genome Biol Evol 2023; 15:evad228. [PMID: 38085065 PMCID: PMC10745273 DOI: 10.1093/gbe/evad228] [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] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
Young grapevines (Vitis vinifera) suffer and eventually can die from the crown gall disease caused by the plant pathogen Allorhizobium vitis (Rhizobiaceae). Virulent members of A. vitis harbor a tumor-inducing plasmid and induce formation of crown galls due to the oncogenes encoded on the transfer DNA. The expression of oncogenes in transformed host cells induces unregulated cell proliferation and metabolic and physiological changes. The crown gall produces opines uncommon to plants, which provide an important nutrient source for A. vitis harboring opine catabolism enzymes. Crown galls host a distinct bacterial community, and the mechanisms establishing a crown gall-specific bacterial community are currently unknown. Thus, we were interested in whether genes homologous to those of the tumor-inducing plasmid coexist in the genomes of the microbial species coexisting in crown galls. We isolated 8 bacterial strains from grapevine crown galls, sequenced their genomes, and tested their virulence and opine utilization ability in bioassays. In addition, the 8 genome sequences were compared with 34 published bacterial genomes, including closely related plant-associated bacteria not from crown galls. Homologous genes for virulence and opine anabolism were only present in the virulent Rhizobiaceae. In contrast, homologs of the opine catabolism genes were present in all strains including the nonvirulent members of the Rhizobiaceae and non-Rhizobiaceae. Gene neighborhood and sequence identity of the opine degradation cluster of virulent and nonvirulent strains together with the results of the opine utilization assay support the important role of opine utilization for cocolonization in crown galls, thereby shaping the crown gall community.
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Affiliation(s)
- Hanna Faist
- Center for Health & Bioresources, Bioresources Unit, AIT Austrian Institute of Technology GmbH, Tulln 3430, Austria
- Julius-von-Sachs Institute for Biological Sciences, Molecular Plant Physiology and Biophysics, University of Würzburg, Würzburg 97082, Germany
| | - Markus J Ankenbrand
- Faculty of Biology, Center for Computational and Theoretical Biology, University of Würzburg, Würzburg 97074, Germany
| | - Wiebke Sickel
- Institute of Biodiversity, Thuenen-Institute of Biodiversity, Braunschweig 38116, Germany
| | - Ute Hentschel
- RD3 Marine Ecology, RU Marine Symbioses, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24105, Germany
- Sektion Biologie, Christian-Albrechts University of Kiel, Kiel 24105, Germany
| | - Alexander Keller
- Cellular and Organismic Networks, Faculty of Biology, Ludwig-Maximilians-Universität München, Planegg-Martinsried 82152, Germany
| | - Rosalia Deeken
- Julius-von-Sachs Institute for Biological Sciences, Molecular Plant Physiology and Biophysics, University of Würzburg, Würzburg 97082, Germany
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Bell KL, Turo KJ, Lowe A, Nota K, Keller A, Encinas‐Viso F, Parducci L, Richardson RT, Leggett RM, Brosi BJ, Burgess KS, Suyama Y, de Vere N. Plants, pollinators and their interactions under global ecological change: The role of pollen DNA metabarcoding. Mol Ecol 2023; 32:6345-6362. [PMID: 36086900 PMCID: PMC10947134 DOI: 10.1111/mec.16689] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [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: 01/10/2022] [Revised: 08/18/2022] [Accepted: 08/30/2022] [Indexed: 11/28/2022]
Abstract
Anthropogenic activities are triggering global changes in the environment, causing entire communities of plants, pollinators and their interactions to restructure, and ultimately leading to species declines. To understand the mechanisms behind community shifts and declines, as well as monitoring and managing impacts, a global effort must be made to characterize plant-pollinator communities in detail, across different habitat types, latitudes, elevations, and levels and types of disturbances. Generating data of this scale will only be feasible with rapid, high-throughput methods. Pollen DNA metabarcoding provides advantages in throughput, efficiency and taxonomic resolution over traditional methods, such as microscopic pollen identification and visual observation of plant-pollinator interactions. This makes it ideal for understanding complex ecological networks and their responses to change. Pollen DNA metabarcoding is currently being applied to assess plant-pollinator interactions, survey ecosystem change and model the spatiotemporal distribution of allergenic pollen. Where samples are available from past collections, pollen DNA metabarcoding has been used to compare contemporary and past ecosystems. New avenues of research are possible with the expansion of pollen DNA metabarcoding to intraspecific identification, analysis of DNA in ancient pollen samples, and increased use of museum and herbarium specimens. Ongoing developments in sequencing technologies can accelerate progress towards these goals. Global ecological change is happening rapidly, and we anticipate that high-throughput methods such as pollen DNA metabarcoding are critical for understanding the evolutionary and ecological processes that support biodiversity, and predicting and responding to the impacts of change.
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Affiliation(s)
- Karen L. Bell
- CSIRO Health & Biosecurity and CSIRO Land & WaterFloreatWAAustralia
- School of Biological SciencesUniversity of Western AustraliaCrawleyWAAustralia
| | - Katherine J. Turo
- Department of Ecology, Evolution, and Natural ResourcesRutgers UniversityNew BrunswickNew JerseyUSA
| | | | - Kevin Nota
- Department of Ecology and GeneticsEvolutionary Biology Centre, Uppsala UniversityUppsalaSweden
| | - Alexander Keller
- Organismic and Cellular Networks, Faculty of BiologyBiocenter, Ludwig‐Maximilians‐Universität MünchenPlaneggGermany
| | - Francisco Encinas‐Viso
- Centre for Australian National Biodiversity ResearchCSIROBlack MountainAustralian Capital TerritoryAustralia
| | - Laura Parducci
- Department of Ecology and GeneticsEvolutionary Biology Centre, Uppsala UniversityUppsalaSweden
- Department of Environmental BiologySapienza University of RomeRomeItaly
| | - Rodney T. Richardson
- Appalachian LaboratoryUniversity of Maryland Center for Environmental ScienceFrostburgMarylandUSA
| | | | - Berry J. Brosi
- Department of BiologyUniversity of WashingtonSeattleWashingtonUSA
| | - Kevin S. Burgess
- Department of BiologyCollege of Letters and Sciences, Columbus State University, University System of GeorgiaAtlantaGeorgiaUSA
| | - Yoshihisa Suyama
- Field Science CenterGraduate School of Agricultural Science, Tohoku UniversityOsakiMiyagiJapan
| | - Natasha de Vere
- Natural History Museum of DenmarkUniversity of CopenhagenCopenhagenDenmark
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Leonhardt F, Keller A, Arranz Aveces C, Ernst R. From Alien Species to Alien Communities: Host- and Habitat-Associated Microbiomes in an Alien Amphibian. Microb Ecol 2023; 86:2373-2385. [PMID: 37233803 PMCID: PMC10640505 DOI: 10.1007/s00248-023-02227-5] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 04/20/2023] [Indexed: 05/27/2023]
Abstract
Alien species can host diverse microbial communities. These associated microbiomes may be important in the invasion process and their analysis requires a holistic community-based approach. We analysed the skin and gut microbiome of Eleutherodactylus johnstonei from native range populations in St Lucia and exotic range populations in Guadeloupe, Colombia, and European greenhouses along with their respective environmental microbial reservoir through a 16S metabarcoding approach. We show that amphibian-associated and environmental microbial communities can be considered as meta-communities that interact in the assembly process. High proportions of bacteria can disperse between frogs and environment, while respective abundances are rather determined by niche effects driven by the microbial community source and spatial environmental properties. Environmental transmissions appeared to have higher relevance for skin than for gut microbiome composition and variation. We encourage further experimental studies to assess the implications of turnover in amphibian-associated microbial communities and potentially invasive microbiota in the context of invasion success and impacts. Within this novel framework of "nested invasions," (meta-)community ecology thinking can complement and widen the traditional perspective on biological invasions.
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Affiliation(s)
- Franziska Leonhardt
- Faculty of Biology, Technical University of Dresden, 01062, Dresden, Germany.
- Museum of Zoology, Senckenberg Natural History Collections Dresden, Königsbrücker Landstraße 159, 01109, Dresden, Germany.
| | - Alexander Keller
- Faculty of Biology, Ludwig-Maximilians-University of Munich, Geschwister-Scholl-Platz 1, 80539, München, Germany
| | - Clara Arranz Aveces
- Staatliches Museum für Naturkunde Stuttgart, Rosenstein 1, 70173, Stuttgart, Germany
| | - Raffael Ernst
- Faculty of Biology, Technical University of Dresden, 01062, Dresden, Germany.
- Museum of Zoology, Senckenberg Natural History Collections Dresden, Königsbrücker Landstraße 159, 01109, Dresden, Germany.
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8
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Abdelhakiem MK, Keller A, Bajpai RR, Smith RP, Beriwal S, Benoit R. Long-Term Urinary Toxicity Follow-Up of Combined External Beam Radiation and Cs-131 LDR Brachytherapy Boost for Prostate Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e361. [PMID: 37785244 DOI: 10.1016/j.ijrobp.2023.06.2450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To evaluate and update our institutional data on chronic patient-reported urinary symptoms in patients with prostate cancer treated with combined external beam radiation therapy (EBRT) and Cesium-131 (Cs-131) LDR brachytherapy boost. MATERIALS/METHODS Patients treated from September 2006-July 2022 and with at least 6 months of follow-up were analyzed. Patients filled out the Expanded Prostate Cancer Index Composite (EPIC) questionnaire pre-treatment and at each scheduled follow-up. Mean EPIC urinary scores were calculated for urinary summary, urinary function, urinary bother, urinary incontinence, and urinary irritative/obstructive domains. Changes of 7-points or more in mean domain scores were deemed clinically significant. The prevalence of urinary bleeding was calculated and bleeding occurring more than "about once a week" ("more than once a week", "about once a day", and "more than once a day") was deemed clinically significant. Outcomes were analyzed at each follow-up timepoint using paired t-test. RESULTS A total of 341 patients with prostate cancer were included in the analysis of which 183 were intermediate-risk and 158 high-risk. 174 patients were treated with tri-modality therapy, and SpaceOAR was used in 108 patients. Long-term statistically significant decreases in mean EPIC QOL scores were seen in urinary summary, urinary function, urinary bother, urinary incontinence, and urinary irritative/obstructive domains at 6 months, with clinically and statistically significant decreases in urinary function and urinary incontinence at 6 months (86±17.4, 83.4±22.2 respectively) and up to 18 months post-treatment (84.8±17.4, 83.6±20.7 respectively) compared with pre-treatment scores (93.1±10.7, 90.8±14.8 respectively), with both domains returning to clinical baseline at 24 months. Urinary irritative/obstructive mean scores clinically and significantly decreased at 9 months (77±17.4) compared to pre-treatment (84.7±13.5), returning to clinical baseline at 12 months. The prevalence of clinically significant urinary bleeding at 6, 12, 24, 36, 48, and 60 months was 1.3%, 2.6%, 3.7%, 0.7%, 0.9%, and 2.3% respectively. At the median follow-up of 42 months (IQR 54, 18-72), mean EPIC scores were clinically improved (≥7-point increase) from pre-treatment baseline in 15-30% of patients across the analyzed urinary domains. CONCLUSION Long-term patient-reported clinically significant decreases in urinary function and urinary incontinence mean EPIC scores occurred up to 18 months following combined external beam radiation and Cs-131 prostate brachytherapy and returned to baseline at 24 months, while clinically significant decrease in urinary irritability/obstructive mean scores occurred at 9 months and returned to baseline at 12 months. At 42 months follow-up, mean urinary domain scores improved from pre-treatment baseline in 15-30% of patients.
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Affiliation(s)
- M K Abdelhakiem
- UPMC Hillman Cancer Center, Department of Radiation Oncology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - A Keller
- Radiation Oncology, AdventHealth Cancer Institute, Orlando, FL
| | - R R Bajpai
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - R P Smith
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - S Beriwal
- Allegheny Health Network Cancer Institute, Department of Radiation Oncology, Pittsburgh, PA
| | - R Benoit
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA
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9
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Martins AC, Proença CEB, Vasconcelos TNC, Aguiar AJC, Farinasso HC, de Lima ATF, Faria JEQ, Norrana K, Costa MBR, Carvalho MM, Dias RL, Bustamante MMC, Carvalho FA, Keller A. Contrasting patterns of foraging behavior in neotropical stingless bees using pollen and honey metabarcoding. Sci Rep 2023; 13:14474. [PMID: 37660141 PMCID: PMC10475120 DOI: 10.1038/s41598-023-41304-0] [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: 06/05/2023] [Accepted: 08/24/2023] [Indexed: 09/04/2023] Open
Abstract
Stingless bees are major flower visitors in the tropics, but their foraging preferences and behavior are still poorly understood. Studying stingless bee interactions with angiosperms is methodologically challenging due to the high tropical plant diversity and inaccessibility of upper canopy flowers in forested habitats. Pollen DNA metabarcoding offers an opportunity of assessing floral visitation efficiently and was applied here to understand stingless bee floral resources spectra and foraging behavior. We analyzed pollen and honey from nests of three distantly related stingless bee species, with different body size and social behavior: Melipona rufiventris, Scaptotrigona postica and Tetragonisca angustula. Simultaneously, we evaluate the local floristic components through seventeen rapid botanical surveys conducted at different distances from the nests. We discovered a broad set of explored floral sources, with 46.3 plant species per bee species in honey samples and 53.67 in pollen samples. Plant families Myrtaceae, Asteraceae, Euphorbiaceae, Melastomataceae and Malpighiaceae dominated the records, indicating stingless bee preferences for abundant resources that flowers of these families provide in the region. Results also reinforce the preference of stingless bees for forest trees, even if only available at long distances. Our high-resolution results encourage future bee-plant studies using pollen and honey metabarcoding in hyper-diverse tropical environments.
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Affiliation(s)
- Aline C Martins
- Departamento de Ecologia, Universidade de Brasília, Brasília, DF, 70910-900, Brazil.
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - Carolyn E B Proença
- Departamento de Botânica, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Thais N C Vasconcelos
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Antonio J C Aguiar
- Laboratório de Abelhas, Departamento de Zoologia, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Hannah C Farinasso
- Laboratório de Abelhas, Departamento de Zoologia, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Aluisio T F de Lima
- Departamento de Botânica, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Jair E Q Faria
- Departamento de Botânica, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Krissya Norrana
- Laboratório de Abelhas, Departamento de Zoologia, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Marcella B R Costa
- Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Matheus M Carvalho
- Laboratório de Abelhas, Departamento de Zoologia, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
- Laboratório de Biologia Comparada e Abelhas, Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
| | - Rodrigo L Dias
- Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | | | - Fernanda A Carvalho
- Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Alexander Keller
- Cellular and Organismic Networks, Faculty of Biology, Ludwig-Maximilians University, 82152, Munich, Germany
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10
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Gaube P, Marchenko P, Müller C, Schweiger R, Tenhaken R, Keller A, Junker RR. Inter- and intraspecific phytochemical variation correlate with epiphytic flower and leaf bacterial communities. Environ Microbiol 2023; 25:1624-1643. [PMID: 37011905 DOI: 10.1111/1462-2920.16382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/24/2023] [Indexed: 04/05/2023]
Abstract
Microbes associated with flowers and leaves affect plant health and fitness and modify the chemical phenotypes of plants with consequences for interactions of plants with their environment. However, the drivers of bacterial communities colonizing above-ground parts of grassland plants in the field remain largely unknown. We therefore examined the relationships between phytochemistry and the epiphytic bacterial community composition of flowers and leaves of Ranunculus acris and Trifolium pratense. On 252 plant individuals, we characterized primary and specialized metabolites, that is, surface sugars, volatile organic compounds (VOCs), and metabolic fingerprints, as well as epiphytic flower and leaf bacterial communities. The genomic potential of bacterial colonizers concerning metabolic capacities was assessed using bacterial reference genomes. Phytochemical composition displayed pronounced variation within and between plant species and organs, which explained part of the variation in bacterial community composition. Correlation network analysis suggests strain-specific correlations with metabolites. Analysis of bacterial reference genomes revealed taxon-specific metabolic capabilities that corresponded with genes involved in glycolysis and adaptation to osmotic stress. Our results show relationships between phytochemistry and the flower and leaf bacterial microbiomes suggesting that plants provide chemical niches for distinct bacterial communities. In turn, bacteria may induce alterations in the plants' chemical phenotype. Thus, our study may stimulate further research on the mechanisms of trait-based community assembly in epiphytic bacteria.
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Affiliation(s)
- Paul Gaube
- Department of Bioinformatics, University of Würzburg, D-97074, Würzburg, Germany
- Center for Computational and Theoretical Biology, University of Würzburg, D-97074, Würzburg, Germany
| | - Polina Marchenko
- Department of Environment and Biodiversity, University of Salzburg, A-5020, Salzburg, Austria
| | - Caroline Müller
- Department of Chemical Ecology, Bielefeld University, D-33615, Bielefeld, Germany
| | - Rabea Schweiger
- Department of Chemical Ecology, Bielefeld University, D-33615, Bielefeld, Germany
| | - Raimund Tenhaken
- Department of Environment and Biodiversity, University of Salzburg, A-5020, Salzburg, Austria
| | - Alexander Keller
- Cellular and Organismic Networks, Center for Organismic Adaptation (CORA), Faculty of Biology, LMU Munich, Planegg-Martinsried, D-82152, Germany
| | - Robert R Junker
- Department of Environment and Biodiversity, University of Salzburg, A-5020, Salzburg, Austria
- Evolutionary Ecology of Plants, Department of Biology, University of Marburg, D-35032, Marburg, Germany
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11
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Gulen MF, Samson N, Keller A, Schwabenland M, Liu C, Glück S, Thacker VV, Favre L, Mangeat B, Kroese LJ, Krimpenfort P, Prinz M, Ablasser A. cGAS-STING drives ageing-related inflammation and neurodegeneration. Nature 2023; 620:374-380. [PMID: 37532932 PMCID: PMC10412454 DOI: 10.1038/s41586-023-06373-1] [Citation(s) in RCA: 72] [Impact Index Per Article: 72.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 06/27/2023] [Indexed: 08/04/2023]
Abstract
Low-grade inflammation is a hallmark of old age and a central driver of ageing-associated impairment and disease1. Multiple factors can contribute to ageing-associated inflammation2; however, the molecular pathways that transduce aberrant inflammatory signalling and their impact in natural ageing remain unclear. Here we show that the cGAS-STING signalling pathway, which mediates immune sensing of DNA3, is a critical driver of chronic inflammation and functional decline during ageing. Blockade of STING suppresses the inflammatory phenotypes of senescent human cells and tissues, attenuates ageing-related inflammation in multiple peripheral organs and the brain in mice, and leads to an improvement in tissue function. Focusing on the ageing brain, we reveal that activation of STING triggers reactive microglial transcriptional states, neurodegeneration and cognitive decline. Cytosolic DNA released from perturbed mitochondria elicits cGAS activity in old microglia, defining a mechanism by which cGAS-STING signalling is engaged in the ageing brain. Single-nucleus RNA-sequencing analysis of microglia and hippocampi of a cGAS gain-of-function mouse model demonstrates that engagement of cGAS in microglia is sufficient to direct ageing-associated transcriptional microglial states leading to bystander cell inflammation, neurotoxicity and impaired memory capacity. Our findings establish the cGAS-STING pathway as a driver of ageing-related inflammation in peripheral organs and the brain, and reveal blockade of cGAS-STING signalling as a potential strategy to halt neurodegenerative processes during old age.
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Affiliation(s)
- Muhammet F Gulen
- Global Health Institute, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Natasha Samson
- Global Health Institute, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Alexander Keller
- Global Health Institute, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Marius Schwabenland
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Chong Liu
- Global Health Institute, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Selene Glück
- Global Health Institute, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Vivek V Thacker
- Global Health Institute, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Lucie Favre
- Division of Endocrinology, Diabetology and Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Bastien Mangeat
- Gene Expression Core Facility, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Lona J Kroese
- Animal Modeling Facility, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Paul Krimpenfort
- Animal Modeling Facility, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Marco Prinz
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Basics in NeuroModulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany
| | - Andrea Ablasser
- Global Health Institute, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland.
- Institute for Cancer Research (ISREC), Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland.
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12
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Vogel C, Poveda K, Iverson A, Boetzl FA, Mkandawire T, Chunga TL, Küstner G, Keller A, Bezner Kerr R, Steffan‐Dewenter I. The effects of crop type, landscape composition and agroecological practices on biodiversity and ecosystem services in tropical smallholder farms. J Appl Ecol 2023. [DOI: 10.1111/1365-2664.14380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Cassandra Vogel
- Julius‐Maximilians Universität Würzburg, Department of Animal Ecology and Tropical Biology, Biocenter, Am Hubland, 97074 Würzburg Bavaria Germany
| | - Katja Poveda
- Cornell University Department of Entomology, 4126 Comstock Hall, Ithaca New York USA
| | - Aaron Iverson
- St. Lawrence University, Environmental Studies Department, Memorial Hall 201, Canton New York USA
| | - Fabian A. Boetzl
- Julius‐Maximilians Universität Würzburg, Department of Animal Ecology and Tropical Biology, Biocenter, Am Hubland, 97074 Würzburg Bavaria Germany
- Swedish University of Agricultural Sciences Uppsala Sweden
| | - Tapiwa Mkandawire
- Soils, Food and Healthy Communities (SFHC), P.O. Box 36, Ekwendeni Mzimba Malawi
| | - Timothy L. Chunga
- Soils, Food and Healthy Communities (SFHC), P.O. Box 36, Ekwendeni Mzimba Malawi
| | - Georg Küstner
- Julius‐Maximilians Universität Würzburg, Department of Animal Ecology and Tropical Biology, Biocenter, Am Hubland, 97074 Würzburg Bavaria Germany
| | - Alexander Keller
- Ludwig‐Maximilians‐Universität Munich, Cellular and Organismic Networks, Faculty of Biology, 82152 Planegg‐ Martinsried Germany
| | - Rachel Bezner Kerr
- Cornell University Department of Global Development, 262 Warren Hall, Ithaca New York USA
| | - Ingolf Steffan‐Dewenter
- Julius‐Maximilians Universität Würzburg, Department of Animal Ecology and Tropical Biology, Biocenter, Am Hubland, 97074 Würzburg Bavaria Germany
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13
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Kuntz L, Le Fèvre C, Jarnet D, Keller A, Meyer P, Thiery A, Cebula H, Noel G, Antoni D. Changes in the characteristics of patients treated for brain metastases with repeat stereotactic radiotherapy (SRT): a retrospective study of 184 patients. Radiat Oncol 2023; 18:21. [PMID: 36717863 PMCID: PMC9885681 DOI: 10.1186/s13014-023-02200-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] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 01/03/2023] [Indexed: 01/31/2023] Open
Abstract
PURPOSE Brain metastases (BMs) are the leading cause of intracranial malignant neoplasms in adults. WHO, Karnofsky performance status (KPS), age, number of BMs, extracerebral progression (ECP), recursive partitioning analysis (RPA), diagnosis-specific graded prognostic assessment (Ds-GPA) are validated prognostic tools to help clinicians decide on treatment. No consensus exists for repeat stereotactic radiotherapy (SRT) for BMs. The aim of this study was to review the changes in patient characteristics treated with repeated SRTs. METHODS AND MATERIALS The data of patients treated between 2010 and 2020 with at least two courses of SRT without previous whole brain radiotherapy (WBRT) were reviewed. Age, WHO, KPS, ECP, type of systemic treatment, number of BMs were recorded. RPA, Ds-GPA and brain metastasis velocity (BMV) were calculated. RESULTS 184 patients were treated for 915 BMs and received two to six SRTs for local or distant brain recurrence. The median number of BMs treated per SRT was 1 (range: 1-6), for a median of 4 BMs treated during all sessions (range: 2-19). WHO, Ds-GPA and RPA were stable between each session of SRT, whereas KPS was significantly better in SRT1 than in the following SRT. The number of BMs was not significantly different between each SRT, but there was a tendency for more BM at SRT1 (p = 0.06). At SRT1, patients had largest BM and undergo more surgery than during the following SRT (p < 0.001). 6.5%, 37.5% and 56% of patients were classified as high, intermediate, and low BMV, respectively, at the last SRT session. There was almost perfect concordance between the BMV-grade calculated at the last SRT session and at SRT2 (r = 0.89; p < 0.001). CONCLUSION Repeated SRT doesn't lead to a marked alteration in the general condition, KPS was maintained at over 70% for more than 95% of patients during all SRTs. Long survival can be expected, especially in low-grade BMV patients. WBRT shouldn't be aborted, especially for patients developing more than twelve BMs annually.
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Affiliation(s)
- L. Kuntz
- grid.512000.6Department of Radiation Therapy, Institut de Cancérologie Strasbourg Europe (ICANS), 17 Rue Albert Calmette, 67200 Strasbourg, France
| | - C. Le Fèvre
- grid.512000.6Department of Radiation Therapy, Institut de Cancérologie Strasbourg Europe (ICANS), 17 Rue Albert Calmette, 67200 Strasbourg, France
| | - D. Jarnet
- grid.512000.6Medical Physics Unit, Institut de Cancérologie Strasbourg Europe (ICANS), 17 Rue Albert Calmette, 67200 Strasbourg, France
| | - A. Keller
- grid.512000.6Department of Radiation Therapy, Institut de Cancérologie Strasbourg Europe (ICANS), 17 Rue Albert Calmette, 67200 Strasbourg, France
| | - P. Meyer
- grid.512000.6Medical Physics Unit, Institut de Cancérologie Strasbourg Europe (ICANS), 17 Rue Albert Calmette, 67200 Strasbourg, France
| | - A. Thiery
- grid.512000.6Medical Information Department, Institut de Cancérologie Strasbourg Europe (ICANS), 3 Rue de La Porte de L’Hôpital, 67065 Strasbourg Cedex, France
| | - H. Cebula
- grid.412220.70000 0001 2177 138XDepartment of Neurosurgery, University Hospitals of Strasbourg, 1 Avenue Molière, 67200 Strasbourg, France
| | - G. Noel
- grid.512000.6Department of Radiation Therapy, Institut de Cancérologie Strasbourg Europe (ICANS), 17 Rue Albert Calmette, 67200 Strasbourg, France
| | - D. Antoni
- grid.512000.6Department of Radiation Therapy, Institut de Cancérologie Strasbourg Europe (ICANS), 17 Rue Albert Calmette, 67200 Strasbourg, France
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14
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Değirmenci L, Rogé Ferreira FL, Vukosavljevic A, Heindl C, Keller A, Geiger D, Scheiner R. Sugar perception in honeybees. Front Physiol 2023; 13:1089669. [PMID: 36714315 PMCID: PMC9880324 DOI: 10.3389/fphys.2022.1089669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/28/2022] [Indexed: 01/14/2023] Open
Abstract
Honeybees (Apis mellifera) need their fine sense of taste to evaluate nectar and pollen sources. Gustatory receptors (Grs) translate taste signals into electrical responses. In vivo experiments have demonstrated collective responses of the whole Gr-set. We here disentangle the contributions of all three honeybee sugar receptors (AmGr1-3), combining CRISPR/Cas9 mediated genetic knock-out, electrophysiology and behaviour. We show an expanded sugar spectrum of the AmGr1 receptor. Mutants lacking AmGr1 have a reduced response to sucrose and glucose but not to fructose. AmGr2 solely acts as co-receptor of AmGr1 but not of AmGr3, as we show by electrophysiology and using bimolecular fluorescence complementation. Our results show for the first time that AmGr2 is indeed a functional receptor on its own. Intriguingly, AmGr2 mutants still display a wildtype-like sugar taste. AmGr3 is a specific fructose receptor and is not modulated by a co-receptor. Eliminating AmGr3 while preserving AmGr1 and AmGr2 abolishes the perception of fructose but not of sucrose. Our comprehensive study on the functions of AmGr1, AmGr2 and AmGr3 in honeybees is the first to combine investigations on sugar perception at the receptor level and simultaneously in vivo. We show that honeybees rely on two gustatory receptors to sense all relevant sugars.
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Affiliation(s)
- Laura Değirmenci
- Behavioral Physiology and Sociobiology, Biocenter, Julius-Maximilians-Universität Würzburg, Wuerzburg, Germany,*Correspondence: Laura Değirmenci, ; Fabio Luiz Rogé Ferreira,
| | - Fabio Luiz Rogé Ferreira
- Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Wuerzburg, Germany,*Correspondence: Laura Değirmenci, ; Fabio Luiz Rogé Ferreira,
| | - Adrian Vukosavljevic
- Behavioral Physiology and Sociobiology, Biocenter, Julius-Maximilians-Universität Würzburg, Wuerzburg, Germany
| | - Cornelia Heindl
- Behavioral Physiology and Sociobiology, Biocenter, Julius-Maximilians-Universität Würzburg, Wuerzburg, Germany
| | - Alexander Keller
- Organismic and Cellular Interactions, Faculty of Biology, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Dietmar Geiger
- Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Wuerzburg, Germany
| | - Ricarda Scheiner
- Behavioral Physiology and Sociobiology, Biocenter, Julius-Maximilians-Universität Würzburg, Wuerzburg, Germany
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15
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Kuntz L, Le Fèvre C, Jarnet D, Keller A, Meyer P, Thiery A, Cebula H, Noel G, Antoni D. Acute toxicities and cumulative dose to the brain of repeated sessions of stereotactic radiotherapy (SRT) for brain metastases: a retrospective study of 184 patients. Radiat Oncol 2023; 18:7. [PMID: 36627646 PMCID: PMC9830690 DOI: 10.1186/s13014-022-02194-0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 12/28/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Stereotactic radiation therapy (SRT) is a focal treatment for brain metastases (BMs); thus, 20 to 40% of patients will require salvage treatment after an initial SRT session, either because of local or distant failure. SRT is not exempt from acute toxicity, and the acute toxicities of repeated SRT are not well known. The objective of this study was to analyze the acute toxicities of repeated courses of SRT and to determine whether repeated SRT could lead to cumulative brain doses equivalent to those of whole-brain radiotherapy (WBRT). MATERIAL AND METHODS Between 2010 and 2020, data from 184 patients treated for 915 BMs via two to six SRT sessions for local or distant BM recurrence without previous or intercurrent WBRT were retrospectively reviewed. Patients were seen via consultations during SRT, and the delivered dose, the use of corticosteroid therapy and neurological symptoms were recorded and rated according to the CTCAEv4. The dosimetric characteristics of 79% of BMs were collected, and summation plans of 76.6% of BMs were created. RESULTS 36% of patients developed acute toxicity during at least one session. No grade three or four toxicity was registered, and grade one or two cephalalgy was the most frequently reported symptom. There was no significant difference in the occurrence of acute toxicity between consecutive SRT sessions. In the multivariate analysis, acute toxicity was associated with the use of corticosteroid therapy before irradiation (OR = 2.6; p = 0.01), BMV grade (high vs. low grade OR = 5.17; p = 0.02), and number of SRT sessions (3 SRT vs. 2 SRT: OR = 2.64; p = 0.01). The median volume equivalent to the WBRT dose (VWBRT) was 47.9 ml. In the multivariate analysis, the VWBRT was significantly associated with the total GTV (p < 0.001) and number of BMs (p < 0.001). Even for patients treated for more than ten cumulated BMs, the median BED to the brain was very low compared to the dose delivered during WBRT. CONCLUSION Repeated SRT for local or distant recurrent BM is well tolerated, without grade three or four toxicity, and does not cause more acute neurological toxicity with repeated SRT sessions. Moreover, even for patients treated for more than ten BMs, the VWBRT is low.
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Affiliation(s)
- L. Kuntz
- grid.512000.6Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17 rue Albert Calmette, 67200 Strasbourg, France
| | - C. Le Fèvre
- grid.512000.6Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17 rue Albert Calmette, 67200 Strasbourg, France
| | - D. Jarnet
- grid.512000.6Medical Physics Unit, Institut de Cancérologie Strasbourg Europe (ICANS), 17 rue Albert Calmette, 67200 Strasbourg, France
| | - A. Keller
- grid.512000.6Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17 rue Albert Calmette, 67200 Strasbourg, France
| | - P. Meyer
- grid.512000.6Medical Physics Unit, Institut de Cancérologie Strasbourg Europe (ICANS), 17 rue Albert Calmette, 67200 Strasbourg, France
| | - A. Thiery
- grid.512000.6Medical Information Department, Institut de Cancérologie Strasbourg Europe (ICANS), 3 rue de la Porte de L’Hôpital, 67065 Strasbourg Cedex, France
| | - H. Cebula
- grid.412220.70000 0001 2177 138XDepartment of Neurosurgery, University Hospitals of Strasbourg, 1 Avenue Molière, 67200 Strasbourg, France
| | - G. Noel
- grid.512000.6Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17 rue Albert Calmette, 67200 Strasbourg, France
| | - D. Antoni
- grid.512000.6Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17 rue Albert Calmette, 67200 Strasbourg, France
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16
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Diehl JMC, Keller A, Biedermann PHW. Comparing the succession of microbial communities throughout development in field and laboratory nests of the ambrosia beetle Xyleborinus saxesenii. Front Microbiol 2023; 14:1151208. [PMID: 37152720 PMCID: PMC10159272 DOI: 10.3389/fmicb.2023.1151208] [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: 01/25/2023] [Accepted: 03/31/2023] [Indexed: 05/09/2023] Open
Abstract
Some fungus-farming ambrosia beetles rely on multiple nutritional cultivars (Ascomycota: Ophiostomatales and/or yeasts) that seem to change in relative abundance over time. The succession of these fungi could benefit beetle hosts by optimal consumption of the substrate and extended longevity of the nest. However, abundances of fungal cultivars and other symbionts are poorly known and their culture-independent quantification over development has been studied in only a single species. Here, for the first time, we compared the diversity and succession of both fungal and bacterial communities of fungus gardens in the fruit-tree pinhole borer, Xyleborinus saxesenii, from field and laboratory nests over time. By amplicon sequencing of probed fungus gardens of both nest types at three development phases we showed an extreme reduction of diversity in both bacterial and fungal symbionts in laboratory nests. Furthermore, we observed a general transition from nutritional to non-beneficial fungal symbionts during beetle development. While one known nutritional mutualist, Raffaelea canadensis, was occurring more or less stable over time, the second mutualist R. sulphurea was dominating young nests and decreased in abundance at the expense of other secondary fungi. The quicker the succession proceeded, the slower offspring beetles developed, suggesting a negative role of these secondary symbionts. Finally, we found signs of transgenerational costs of late dispersal for daughters, possibly as early dispersers transmitted and started their own nests with less of the non-beneficial taxa. Future studies should focus on the functional roles of the few bacterial taxa that were present in both field and laboratory nests.
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Affiliation(s)
- Janina M. C. Diehl
- Chair of Forest Entomology and Protection, Institute of Forestry, University of Freiburg, Freiburg im Breisgau, Germany
- Insect-Fungus Interactions Research Group, Department of Animal Ecology and Tropical Biology, University of Würzburg, Würzburg, Germany
- *Correspondence: Janina M. C. Diehl,
| | - Alexander Keller
- Faculty of Biology, Cellular and Organismic Networks, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Peter H. W. Biedermann
- Chair of Forest Entomology and Protection, Institute of Forestry, University of Freiburg, Freiburg im Breisgau, Germany
- Peter H. W. Biedermann,
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17
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Sabbagh H, Bamidis EP, Keller A, Stocker T, Baumert U, Hoffmann L, Wichelhaus A. Force behavior of elastic chains during a simulated gap closure in extraction therapy cases. Orthod Craniofac Res 2022. [DOI: 10.1111/ocr.12626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/24/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Hisham Sabbagh
- Department of Orthodontics and Dentofacial Orthopedics University Hospital Munich Germany
| | - Elias P. Bamidis
- Department of Orthodontics and Dentofacial Orthopedics University Hospital Munich Germany
| | - Alexander Keller
- Department of Orthodontics and Dentofacial Orthopedics University Hospital Munich Germany
| | - Thomas Stocker
- Department of Orthodontics and Dentofacial Orthopedics University Hospital Munich Germany
| | - Uwe Baumert
- Department of Orthodontics and Dentofacial Orthopedics University Hospital Munich Germany
| | - Lea Hoffmann
- Department of Orthodontics and Dentofacial Orthopedics University Hospital Munich Germany
| | - Andrea Wichelhaus
- Department of Orthodontics and Dentofacial Orthopedics University Hospital Munich Germany
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Castillo R, Wurdack M, Pauli T, Keller A, Feldhaar H, Polidori C, Niehuis O, Schmitt T. Evidence for a chemical arms race between cuckoo wasps of the genus Hedychrum and their distantly related host apoid wasps. BMC Ecol Evol 2022; 22:138. [PMID: 36443667 PMCID: PMC9703671 DOI: 10.1186/s12862-022-02093-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 11/14/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Brood parasites can exert strong selection pressure on their hosts. Many brood parasites escape their detection by mimicking sensory cues of their hosts. However, there is little evidence whether or not the hosts are able to escape the parasites' mimicry by changing these cues. We addressed this question by analyzing cuticular hydrocarbon (CHC) profiles of Cerceris and Philanthus wasps and their brood parasites, cuckoo wasps mimicking the CHC profiles of their hosts. Some of these hosts use hydrocarbons to preserve their prey against fungal infestation and thus, they cannot significantly change their CHC composition in response to chemical mimicry by Hedychrum brood parasites. RESULTS We found that the CHC overlap between brood parasites and their hosts was lower in case of host wasps not preserving their prey than in case of prey-preserving host wasps, whose CHC evolution is constrained. Furthermore, the CHC profiles in non-preserving host wasps is more strongly diversified in females than in males, thus in the sex that is chemically mimicked by brood parasites. CONCLUSION Our results provide evidence for a chemical arms race between those hosts that are liberated from stabilizing selection on their chemical template and their parasites.
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Affiliation(s)
- Ruth Castillo
- grid.8379.50000 0001 1958 8658Department of Animal Ecology and Tropical Biology, Biocentre, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Mareike Wurdack
- grid.8379.50000 0001 1958 8658Department of Animal Ecology and Tropical Biology, Biocentre, University of Würzburg, Am Hubland, 97074 Würzburg, Germany ,grid.5963.9Department of Evolutionary Biology and Ecology, University of Freiburg, Hauptstraße 1, 79104 Freiburg, Germany
| | - Thomas Pauli
- grid.5963.9Department of Evolutionary Biology and Ecology, University of Freiburg, Hauptstraße 1, 79104 Freiburg, Germany ,grid.7708.80000 0000 9428 7911Institute of Medical Bioinformatics and Systems Medicine, Medical Center, University of Freiburg, Breisacher Straße 153, 79110 Freiburg, Germany
| | - Alexander Keller
- grid.5252.00000 0004 1936 973XCellular and Organismic Networks, Faculty of Biology, Ludwig-Maximilians-University München, 82152 Planegg-Martinsried, Germany
| | - Heike Feldhaar
- grid.7384.80000 0004 0467 6972Animal Population Ecology, Department of Animal Ecology I, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440 Bayreuth, Germany
| | - Carlo Polidori
- grid.4708.b0000 0004 1757 2822Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, via Celoria 26, 20133 Milan, Italy
| | - Oliver Niehuis
- grid.5963.9Department of Evolutionary Biology and Ecology, University of Freiburg, Hauptstraße 1, 79104 Freiburg, Germany
| | - Thomas Schmitt
- grid.8379.50000 0001 1958 8658Department of Animal Ecology and Tropical Biology, Biocentre, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
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Ronchetti F, Polidori C, Schmitt T, Steffan-Dewenter I, Keller A. Bacterial gut microbiomes of aculeate brood parasites overlap with their aculeate hosts', but have higher diversity and specialization. FEMS Microbiol Ecol 2022; 98:6832279. [PMID: 36396342 DOI: 10.1093/femsec/fiac137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 11/05/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
Despite growing interest in gut microbiomes of aculeate Hymenoptera, research so far focused on social bees, wasps, and ants, whereas non-social taxa and their brood parasites have not received much attention. Brood parasitism, however, allows to distinguish between microbiome components horizontally transmitted by spill-over from the host with such inherited through vertical transmission by mothers. Here, we studied the bacterial gut microbiome of adults in seven aculeate species in four brood parasite-host systems: two bee-mutillid (host-parasitoid) systems, one halictid bee-cuckoo bee system, and one wasp-chrysidid cuckoo wasp system. We addressed the following questions: (1) Do closely related species possess a more similar gut microbiome? (2) Do brood parasites share components of the microbiome with their host? (3) Do brood parasites have different diversity and specialization of microbiome communities compared with the hosts? Our results indicate that the bacterial gut microbiome of the studied taxa was species-specific, yet with a limited effect of host phylogenetic relatedness and a major contribution of shared microbes between hosts and parasites. However, contrasting patterns emerged between bee-parasite systems and the wasp-parasite system. We conclude that the gut microbiome in adult brood parasites is largely affected by their host-parasite relationships and the similarity of trophic food sources between hosts and parasites.
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Affiliation(s)
- Federico Ronchetti
- Department of Animal Ecology and Tropical Biology, University of Würzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Carlo Polidori
- Department of Environmental Science and Policy (ESP), University of Milan, Via Celoria 2. 20133 Milan, Italy
| | - Thomas Schmitt
- Department of Animal Ecology and Tropical Biology, University of Würzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, University of Würzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Alexander Keller
- Cellular and Organismic Networks, Faculty of Biology, Ludwig-Maximilians-Universität Munich, Grosshaderner Str. 2, 82152 Planegg-Martinsried, Germany
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Keller A, Ankenbrand MJ, Bruelheide H, Dekeyzer S, Enquist BJ, Erfanian MB, Falster DS, Gallagher RV, Hammock J, Kattge J, Leonhardt SD, Madin JS, Maitner B, Neyret M, Onstein RE, Pearse WD, Poelen JH, Salguero‐Gomez R, Schneider FD, Tóth AB, Penone C. Ten (mostly) simple rules to future‐proof trait data in ecological and evolutionary sciences. Methods Ecol Evol 2022. [DOI: 10.1111/2041-210x.14033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Alexander Keller
- Cellular and Organismic Networks, Faculty of Biology Ludwig‐Maximilians‐Universität München Martinsried Germany
| | - Markus J. Ankenbrand
- Center for Computational and Theoretical Biology Julius‐Maximilians‐Universität Würzburg Würzburg Germany
| | - Helge Bruelheide
- Institute of Biology/Geobotany and Botanical Garden Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
| | | | - Brian J. Enquist
- Department of Ecology and Evolutionary Biology University of Arizona Tucson Arizona USA
- The Santa Fe Institute Santa Fe New Mexico USA
| | | | - Daniel S. Falster
- Evolution & Ecology Research Centre University of New South Wales Sydney Sydney New South Wales Australia
| | - Rachael V. Gallagher
- Hawkesbury Institute for the Environment Western Sydney University Richmond New South Wales Australia
| | - Jennifer Hammock
- National Museum of Natural History, Smithsonian Institution Washington District of Columbia USA
| | - Jens Kattge
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
- Max Planck Institute for Biogeochemistry Jena Germany
| | - Sara D. Leonhardt
- Plant‐Insect Interactions, TUM School of Life Science Systems Technical University of Munich Freising Germany
| | - Joshua S. Madin
- Hawai'i Institute of Marine Biology University of Hawai'i at Manoa Kāne'ohe Hawai'i USA
| | - Brian Maitner
- Department of Geography University at Buffalo Buffalo New York USA
- Department of Environment and Sustainability University at Buffalo Buffalo New York USA
| | - Margot Neyret
- Senckenberg Biodiversity and Climate Research Center (SBik‐F) Frankfurt Germany
| | - Renske E. Onstein
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
- Naturalis Biodiversity Center Leiden The Netherlands
| | | | - Jorrit H. Poelen
- Ronin Institute for Independent Scholarship Montclair New Jersey USA
- Cheadle Center for Biodiversity and Ecological Restoration, UC Santa Barbara Santa Barbara California USA
| | | | - Florian D. Schneider
- Senckenberg Biodiversity and Climate Research Center (SBik‐F) Frankfurt Germany
- ISOE ‐ Institute for Social‐Ecological Research Frankfurt am Main Germany
| | - Anikó B. Tóth
- Centre for Ecosystem Science, School of Biological Earth and Environmental Sciences University of New South Wales Sydney New South Wales Australia
| | - Caterina Penone
- Institute of Plant Sciences University of Bern Bern Switzerland
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Diehl JMC, Kowallik V, Keller A, Biedermann PHW. First experimental evidence for active farming in ambrosia beetles and strong heredity of garden microbiomes. Proc Biol Sci 2022; 289:20221458. [PMID: 36321493 PMCID: PMC9627711 DOI: 10.1098/rspb.2022.1458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Fungal cultivation is a defining feature for advanced agriculture in fungus-farming ants and termites. In a third supposedly fungus-farming group, wood-colonizing ambrosia beetles, an experimental proof for the effectiveness of beetle activity for selective promotion of their food fungi over others is lacking and farming has only been assumed based on observations of social and hygienic behaviours. Here, we experimentally removed mothers and their offspring from young nests of the fruit-tree pinhole borer, Xyleborinus saxesenii. By amplicon sequencing of bacterial and fungal communities of nests with and without beetles we could show that beetles are indeed able to actively shift symbiont communities. Although being consumed, the Raffaelea food fungi were more abundant when beetles were present while a weed fungus (Chaetomium sp.) as well as overall bacterial diversity were reduced in comparison to nests without beetles. Core symbiont communities were generally of low diversity and there were strong signs for vertical transmission not only for the cultivars, but also for secondary symbionts. Our findings verify the existence of active farming, even though the exact mechanisms underlying the selective promotion and/or suppression of symbionts need further investigation.
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Affiliation(s)
- Janina M. C. Diehl
- Chair of Forest Entomology and Protection, Institute of Forestry, University of Freiburg, Fohrenbühl 27, 79252 Stegen-Wittental, Germany
| | - Vienna Kowallik
- Chair of Forest Entomology and Protection, Institute of Forestry, University of Freiburg, Fohrenbühl 27, 79252 Stegen-Wittental, Germany
| | - Alexander Keller
- Cellular and Organismic Networks, Faculty of Biology, Ludwig-Maximilians-Universität München, Grosshaderner Strasse 2-4, 82152 Planegg-Martinsried, Germany
| | - Peter H. W. Biedermann
- Chair of Forest Entomology and Protection, Institute of Forestry, University of Freiburg, Fohrenbühl 27, 79252 Stegen-Wittental, Germany
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22
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Mulherkar R, Keller A, Houser C, Kim H, Vargo J, Barry P, Beriwal S. Outcomes of 3D MRI Based HDR Brachytherapy with Hybrid Multichannel Vaginal Cylinder Applicator and Freehand Needles for Treatment of Vaginal Disease. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Hartmann J, Keller A, Enk A, Gholam P. Hemodynamic changes during conventional and daylight photodynamic therapy of actinic keratoses - a randomized controlled trial. J DERMATOL TREAT 2022; 33:3022-3027. [PMID: 35775704 DOI: 10.1080/09546634.2022.2097160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND Photodynamic therapy (PDT) is an effective treatment for actinic keratosis (AK). However, pain and hypertension are important side effects of conventional PDT (c-PDT). Several studies have demonstrated that daylight PDT (dl-PDT) is less painful while being as effective as c-PDT. OBJECTIVE To observe the effect of c-PDT and dl-PDT on different hemodynamic parameters (systolic blood pressure and diastolic blood pressure, pulse rate, and peripheral oxygen saturation). METHODS Fifty patients with AK on the head were enrolled into this prospective, randomized, controlled study and treated with c-PDT or dl-PDT in a 1:1 ratio. Hemodynamic parameters were measured at four different time points during treatment. Pain was quantified using a visual analog scale. AK was counted before treatment and after one month. RESULTS C-PDT is associated with significantly more pain, a significant increase in blood pressure and a higher rate of patients with grade 3 hypertension. Whereas dl-PDT is almost painless and does not lead to any changes in hemodynamic parameters. For both treatments, a similar lesion response rate was found after one month. CONCLUSIONS dl-PDT has a better tolerability while being as effective as c-PDT and therefore may be the more favorable treatment option in certain patient groups.
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Affiliation(s)
- J Hartmann
- Department of Dermatology, Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany
| | - A Keller
- Department of Dermatology, Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany
| | - A Enk
- Department of Dermatology, Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany
| | - P Gholam
- Department of Dermatology, Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany
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24
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Musunuru H, Keller A, Lin S, Mohan R, Ellsworth S. Modeling Potential Lymphocyte-Sparing Effect of Involved-Field Radiotherapy in Rectal Cancer. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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Boff S, Keller A, Raizer J, Lupi D. Decreased efficiency of pollen collection due to Sulfoxaflor exposure leads to a reduction in the size of bumble bee workers in late European summer. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.842563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Bumble bees (Bombus terrestris) are important pollinators of wild and crop plants. Despite their importance in the process of fruit and seed production on crop sites, their activity may be impaired due to exposure to pesticides. This species has a yearly life cycle and colony success may rely on effective foraging of workers on ruderal plants late in summer when most crops are no longer flowering. In the current study, we investigated the effect of chronic exposure to Sulfoxaflor on aspects of the foraging behavior of bumble bees and whether Sulfoxaflor influences the body size of workers of B. terrestris in a crop landscape. We found that 2 weeks of continuous exposure to Sulfoxaflor influenced workers’ foraging dynamics and collection of resources. However, there was no evidence that the 5 ppb dose of the pesticide impacted the ability of bees to handle flowers with different traits. Workers from colonies exposed to Sulfoxaflor were smaller. The effect on worker size may be explained as a consequence of the reduced pollen income per unit of worker foraging. Thus, if the effects of Sulfoxaflor applied directly to crops had the same effect as that observed on commercial bumble bees after our chronic exposure, it might negatively impact colony success due to the impact on pollen collection and the reduction in the size of workers.
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26
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Keller A, Freiwald T, Buchholz H, Hohendorf S, Herdlitschka T, Zentel A, Odenwald A, Gödde M. Model‐Based Safety for Semi‐Batch Processes. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202255378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- A. Keller
- BASF SE 67056 Ludwigshafen am Rhein Germany
| | | | | | | | | | - A. Zentel
- BASF SE 67056 Ludwigshafen am Rhein Germany
| | | | - M. Gödde
- BASF SE 67056 Ludwigshafen am Rhein Germany
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König S, Krauss J, Keller A, Bofinger L, Steffan-Dewenter I. Phylogenetic relatedness of food plants reveals highest insect herbivore specialization at intermediate temperatures along a broad climatic gradient. Glob Chang Biol 2022; 28:4027-4040. [PMID: 35429201 DOI: 10.1111/gcb.16199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 03/25/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
The composition and richness of herbivore and plant assemblages change along climatic gradients, but knowledge about associated shifts in specialization is scarce and lacks controlling for the abundance and phylogeny of interaction partners. Thus, we aimed to test whether the specialization of phytophagous insects in insect-plant interaction networks decreases toward cold habitats as predicted by the 'altitude niche-breadth hypothesis' to forecast possible consequences of interaction rewiring under climate change. We used a non-invasive, standardized metabarcoding approach to reconstruct dietary relationships of Orthoptera species as a major insect herbivore taxon along a broad temperature gradient (~12°C) in Southern Germany. Based on Orthoptera surveys, feeding observations, collection of fecal pellets from >3,000 individuals of 54 species, and parallel vegetation surveys on 41 grassland sites, we quantified plant resource availability and its use by herbivores. Herbivore assemblages were richer in species and individuals at sites with high summer temperatures, while plant richness peaked at intermediate temperatures. Corresponding interaction networks were most specialized in warm habitats. Considering phylogenetic relationships of plant resources, however, the specialization pattern was not linear but peaked at intermediate temperatures, mediated by herbivores feeding on a narrow range of phylogenetically related resources. Our study provides empirical evidence of resource specialization of insect herbivores along a climatic gradient, demonstrating that resource phylogeny, availability, and temperature interactively shape the specialization of herbivore assemblages. Instead of low specialization levels only in cold, harsh habitats, our results suggest increased generalist feeding due to intraspecific changes and compositional differences at both ends of the microclimatic gradient. We conclude that this nonlinear change of phylogeny-based resource specialization questions predictions derived from the 'altitude-niche breadth hypothesis' and highlights the currently limited understanding of how plant-herbivore interactions will change under future climatic conditions.
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Affiliation(s)
- Sebastian König
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
| | - Jochen Krauss
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
| | - Alexander Keller
- Organismic and Cellular Interactions, Biocenter, Ludwig-Maximilians-Universität München, Planegg, Germany
| | | | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
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Leonhardt SD, Peters B, Keller A. Do amino and fatty acid profiles of pollen provisions correlate with bacterial microbiomes in the mason bee Osmia bicornis? Philos Trans R Soc Lond B Biol Sci 2022; 377:20210171. [PMID: 35491605 DOI: 10.1098/rstb.2021.0171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Bee performance and well-being strongly depend on access to sufficient and appropriate resources, in particular pollen and nectar of flowers, which constitute the major basis of bee nutrition. Pollen-derived microbes appear to play an important but still little explored role in the plant pollen-bee interaction dynamics, e.g. through affecting quantities and ratios of important nutrients. To better understand how microbes in pollen collected by bees may affect larval health through nutrition, we investigated correlations between the floral, bacterial and nutritional composition of larval provisions and the gut bacterial communities of the solitary megachilid bee Osmia bicornis. Our study reveals correlations between the nutritional quality of pollen provisions and the complete bacterial community as well as individual members of both pollen provisions and bee guts. In particular pollen fatty acid profiles appear to interact with specific members of the pollen bacterial community, indicating that pollen-derived bacteria may play an important role in fatty acid provisioning. As increasing evidence suggests a strong effect of dietary fatty acids on bee performance, future work should address how the observed interactions between specific fatty acids and the bacterial community in larval provisions relate to health in O. bicornis. This article is part of the theme issue 'Natural processes influencing pollinator health: from chemistry to landscapes'.
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Affiliation(s)
- Sara Diana Leonhardt
- Plant-Insect Interactions, TUM School of Life Science Systems, Technical University of Munich, Freising, Germany
| | - Birte Peters
- Department for Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany.,Center for Computational and Theoretical Biology, University of Würzburg, Emil Fischer Strasse, 97074 Würzburg, Germany
| | - Alexander Keller
- Cellular and Organismic Networks, Faculty of Biology, Ludwig-Maximilians-Universität Munich, 82152 Planegg-Martinsried, Germany
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Kuntz L, Le Fèvre C, Jarnet D, Keller A, Meyer P, Cox DG, Bund C, Antoni D, Cebula H, Noel G. Radionecrosis after repeated courses of radiotherapy under stereotactic conditions for brain metastases: Analysis of clinical and dosimetric data from a retrospective cohort of 184 patients. Cancer Radiother 2022; 26:692-702. [PMID: 35715354 DOI: 10.1016/j.canrad.2022.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 12/27/2021] [Accepted: 01/05/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Between 10 and 40% of patients with cancer will develop one or more brain metastases (BMs). Stereotactic radiotherapy (SRT) is part of the therapeutic arsenal for the treatment of de novo or recurrent BM. Its main interest is to delay whole brain radiation therapy (WBRT), which may cause cognitive toxicity. However, SRT is not exempt from long-term toxicity, and the most widely known SRT is radionecrosis (RN). The objective of this study was to analyze the occurrence of RN per BM and per patient. MATERIAL AND METHODS Between 2010 and 2020, data from 184 patients treated for 915 BMs by two to six SRT sessions for local or distant brain recurrence without previous or intercurrent WBRT were retrospectively reviewed. RN was examined on trimestral follow-up MRI and potentially confirmed by surgery or nuclear medicine. For each BM and SRT session plan, summation V12Gy, V14Gy, V21Gy and V23Gy isodoses were collected. Volumes of intersections were created between the 12Gy isodose at the first SRT and the 18Gy isodose of the following SRT (V18-12Gy). RESULTS At the end of follow-up, 23.0% of patients presented RN, and 6.3% of BM presented RN. Median follow-up of BM was 13.3 months (95%CI 18.3-20.8). The median interval between BM irradiation and RN was 8.7 months (95% CI 9.2-14.7). Six-, 12- and 24-month RN-free survival rates per BM were 75%, 54% and 29%, respectively. The median RN-free survival per patient was 15.3 months (95% CI 13.6-18.1). In multivariate analysis, the occurrence of RN per BM was statistically associated with local reirradiation (P<0.001) and the number of SRTs (P<0.001). In univariate analysis, the occurrence of RN per patient was statistically associated with the sum of all V18-12Gy (P=0.02). No statistical association was found in multivariate analysis. A sum of all V18-12Gy of less than 1.5ml was associated with a 14.6% risk of RN, compared with 35.6% when the sum of all V18-12Gy was superior to 1.5ml. The sum of all V18-12Gy larger than 1.5ml was associated with a 74% specificity and 53% sensitivity of RN (P<0.001). CONCLUSION Based on these results, a small number of BMs show RN during repeated SRT for local or distant recurrent BMs. Local reirradiation was the most predictive factor of brain RN. A V18-12Gy larger than 7.6ml in the case of local reirradiation or larger than 1.5ml in proximity reirradiation were prognostic factors of RN. The more BM patients need radiation therapy, and the longer they survive after irradiation, the higher their individual risk of developing RN.
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Affiliation(s)
- L Kuntz
- Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - C Le Fèvre
- Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - D Jarnet
- Medical Physics Unit, Institut de Cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - A Keller
- Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - P Meyer
- Medical Physics Unit, Institut de Cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - D G Cox
- IRFAC, Inserm U1113, 3, avenue Molière, 67000 Strasbourg, France; Research and Development in Precision Medicine, Institut de Cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - C Bund
- Biophysics and Nuclear Medicine, University Hospitals of Strasbourg, 1, avenue Molière, 67200 Strasbourg, France
| | - D Antoni
- Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France
| | - H Cebula
- Department of Neurosurgery, University Hospitals of Strasbourg, 1, avenue Molière, 67200 Strasbourg, France
| | - G Noel
- Radiation Therapy University Department, Institut de Cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg, France.
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Jain R, Peng G, Taylor-Cousar J, Lee M, Keller A, West N, Kazmerski T, Goralski J, Aitken M, Roe A, Hadjiliadis D, Uluer A, Foil K, Flume P, Mody S, Bray L. WS04.04 Impact of planned versus unplanned pregnancy in people with cystic fibrosis. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00174-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Peters B, Keller A, Leonhardt SD. Diets maintained in a changing world: Does land‐use intensification alter wild bee communities by selecting for flexible generalists? Ecol Evol 2022; 12:e8919. [PMID: 35600696 PMCID: PMC9108308 DOI: 10.1002/ece3.8919] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 04/07/2022] [Accepted: 04/19/2022] [Indexed: 11/08/2022] Open
Affiliation(s)
- Birte Peters
- Department for Animal Ecology and Tropical Biology University of Würzburg Biocenter Würzburg Germany
- Department of Bioinformatics University of Würzburg Biocenter Würzburg Germany
- Center for Computational and Theoretical Biology University of Würzburg Würzburg Germany
| | - Alexander Keller
- Cellular and Organismic Networks Faculty of Biology Ludwig‐Maximilians‐Universität Munich Planegg‐Martinsried Germany
| | - Sara Diana Leonhardt
- Department for Animal Ecology and Tropical Biology University of Würzburg Biocenter Würzburg Germany
- Department of Life Science Systems Technical University of Munich Freising Germany
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Pifer P, Jaishankar S, Bhargava R, Keller A, Musunuru H, Cohen M, Sukumvanich P, Courtney-Brooks M, Boisen M, Berger J, Taylor S, Olawaiye A, Lesnock J, Edwards R, Vargo J, Beriwal S. PD-0913 Is substantial LVSI prognostic in patients with pathological lymph node-negative endometrial cancer? Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02992-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Casanelles-Abella J, Keller A, Müller S, Aleixo C, Alós-Orti M, Chiron F, Laanisto L, Myczko Ł, Pinho P, Samson R, Tryjanowski P, Van Mensel A, Villarroya-Villalba L, Pellissier L, Moretti M. Wild bee larval food composition in five European cities. Ecology 2022; 103:e3740. [PMID: 35488300 PMCID: PMC9541566 DOI: 10.1002/ecy.3740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/23/2022] [Accepted: 03/29/2022] [Indexed: 11/08/2022]
Abstract
Urbanization poses threats and opportunities for the biodiversity of wild bees. At the same time, cities can harbour diverse wild bee assemblages, partily due to the unique plant assemblages providing resources. While bee dietary preferences have been investigated in different studies, bee dietary studies have been done mostly in non urban ecosystems and data based on plant visitation observations or palynological techniques. This data set describes the larval food preferences four wild bee species (i.e. Chelostoma florisomne, Hylaeus communis, Osmica bicornis and Osmia cornuta) common in urban areas in five different European cities (i.e. Antwerp, Paris, Poznan, Tartu and Zurich). In addition, this data set also describes the larval food preferences from individuals of three wild bee genera (i.e. Chelostoma sp., Hylaeus sp, and Osmia sp.) that cloud not be identified to the species level. This data results from a European-level study aimed at understanding the effects of urbanization on biodiversity across different cities and cityscapes, and a Swiss project aimed at understanding the effects of urban ecosystems in wild bee feeding behaviour. Wild bees were sampled using standardized trap-nests in 80 sites (32 in Zurich and 12 in each of the remaining cities), selected following a double gradient of available habitat at local and landscape scales. Larval pollen was obtained from the bee nests and identified using DNA metabarcoding. The data provide the plant composition at species or genus level preferred by each bee. This unique data can be used for a wide array of research questions, including urban ecology (e.g. diversity of food sources along urban gradients), bee ecology (characterisation of bee feeding preferences) or comparative studies on urban evolution of behavioural traits between urban and non-urban sites. In addition, the data can be applied for informing urban planning and conservation strategies, particularly concerning the flower resources (e.g. importance of exotic species and thus management activities). This data set can be freely used for non-commercial purposes and this data paper should be cited if you use the data; we request collaboration with the data set contact person be considered if this data set represents an important part of the data analyzed in a study.
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Affiliation(s)
- Joan Casanelles-Abella
- Biodiversity and Conservation Biology, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland.,Institute of Terrestrial Ecosystems, ETH Zurich, Zurich, Switzerland
| | - Alexander Keller
- Organismic and Cellular Interactions, Biocenter, Faculty of Biology, Ludwig-Maximilians-Universität München, Martinsried, Germany
| | - Stefanie Müller
- Biodiversity and Conservation Biology, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland.,Department of Evolutionary Biology and Environmental Studies, University of Zurich, Switzerland
| | - Cristiana Aleixo
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Marta Alós-Orti
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu, Estonia
| | - François Chiron
- Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique Evolution, Orsay, France
| | - Lauri Laanisto
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu, Estonia
| | - Łukasz Myczko
- Department of Zoology, Poznan University of Life Sciences, Poznań, Poland
| | - Pedro Pinho
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Roeland Samson
- Laboratory of Environmental and Urban Ecology, Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
| | - Piotr Tryjanowski
- Department of Zoology, Poznan University of Life Sciences, Poznań, Poland
| | - Anskje Van Mensel
- Laboratory of Environmental and Urban Ecology, Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
| | - Lucía Villarroya-Villalba
- Biodiversity and Conservation Biology, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland
| | - Loïc Pellissier
- Institute of Terrestrial Ecosystems, ETH Zurich, Zurich, Switzerland.,Land Change Science, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland
| | - Marco Moretti
- Biodiversity and Conservation Biology, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland
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Jaishankar S, Pifer PM, Bhargava R, Keller A, Musunuru HB, Patel AK, Sukumvanich P, Boisen M, Berger JL, Taylor S, Courtney-Brooks M, Olawaiye A, Lesnock J, Edwards R, Vargo JA, Beriwal S. Is Substantial Lymphovascular Space Invasion Prognostic for Clinical Outcomes in Type II Endometrial Cancer? Clin Oncol (R Coll Radiol) 2022; 34:452-458. [PMID: 35264314 DOI: 10.1016/j.clon.2022.02.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/26/2022] [Accepted: 02/21/2022] [Indexed: 11/03/2022]
Abstract
AIMS Substantial lymphovascular space invasion (LVSI) compared with none or focal LVSI is predictive of lymph node involvement and worse clinical outcomes in endometrioid-type endometrial carcinoma. We aimed to quantify the incidence of substantial LVSI in type II (clear cell and serous) endometrial cancer and correlate the extent of LVSI with clinical outcomes. MATERIALS AND METHODS A retrospective review was conducted on type II endometrial cancer patients who underwent surgical management from July 2017 to December 2019 using the three-tier LVSI scoring system. Binary logistic regression and Cox regression were used to analyse predictors of lymph node involvement or survival outcomes, respectively. The Kaplan-Meier method and Log-rank test were used to analyse differences in locoregional disease-free survival (LR-DFS), distant metastasis disease-free survival (DM-DFS) and overall survival between patients with substantial versus none/focal LVSI. RESULTS In 79 patients with type II endometrial carcinoma, no LVSI, focal LVSI and substantial LVSI was present in 48.1%, 15.2% and 36.7% of patients, respectively. Lymph nodes were involved in 0.0% with no LVSI, 20.0% with focal LVSI and 60.0% with substantial LVSI (P < 0.001). The median follow-up was 22.2 months. In patients with none/focal versus substantial LVSI, the 2-year LR-DFS and DM-DFS rates were 91.5% versus 71.4% (P = 0.01) and 90.2% versus 63.8% (P = 0.005), respectively. On univariate analysis, myometrial invasion ≥50%, tumour size ≥3.6 cm, substantial versus none/focal LVSI, lymph node involvement and omission of adjuvant radiotherapy were significant predictors for worse LR-DFS and DM-DFS (P < 0.05). DISCUSSION Substantial LVSI has a high incidence in type II pathology at our institution and predicts for lymph node involvement and worse clinical outcomes.
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Affiliation(s)
- S Jaishankar
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - P M Pifer
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - R Bhargava
- Department of Pathology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - A Keller
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - H B Musunuru
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - A K Patel
- Division of Radiation Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA
| | - P Sukumvanich
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - M Boisen
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - J L Berger
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - S Taylor
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - M Courtney-Brooks
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - A Olawaiye
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - J Lesnock
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - R Edwards
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - J A Vargo
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - S Beriwal
- Division of Radiation Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA; Varian Medical Systems, Charlottesville, VA, USA.
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Keller A, Sterner P, Hlawitschka M, Bart HJ. Extraction kinetics of cobalt and manganese with D2EHPA from lithium-ion battery recyclate. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Keller A, Krivec N, Markouli C, Spits C. Measuring Early Germ-Layer Specification Bias in Human Pluripotent Stem Cells. Methods Mol Biol 2022; 2429:57-72. [PMID: 35507155 DOI: 10.1007/978-1-0716-1979-7_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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Human pluripotent stem cells have a wide variety of potential applications, ranging from clinical translation to in vitro disease modeling. However, there is significant variation in the potential of individual cell lines to differentiate towards each of the three germ layers as a result of (epi)genetic background, culture conditions, and other factors. We describe here in detail a methodology to evaluate this bias using short directed differentiation towards neuroectoderm, mesendoderm, and definitive endoderm in combination with quantification by RT-qPCR and immunofluorescent stains.
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Affiliation(s)
- Alexander Keller
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, Jette, Belgium
| | - Nuša Krivec
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, Jette, Belgium
| | - Christina Markouli
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, Jette, Belgium
| | - Claudia Spits
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, Jette, Belgium.
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Parreño MA, Alaux C, Brunet JL, Buydens L, Filipiak M, Henry M, Keller A, Klein AM, Kuhlmann M, Leroy C, Meeus I, Palmer-Young E, Piot N, Requier F, Ruedenauer F, Smagghe G, Stevenson PC, Leonhardt SD. Critical links between biodiversity and health in wild bee conservation. Trends Ecol Evol 2021; 37:309-321. [PMID: 34955328 DOI: 10.1016/j.tree.2021.11.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 11/24/2021] [Accepted: 11/30/2021] [Indexed: 11/29/2022]
Abstract
Wild bee populations are declining due to human activities, such as land use change, which strongly affect the composition and diversity of available plants and food sources. The chemical composition of food (i.e., nutrition) in turn determines the health, resilience, and fitness of bees. For pollinators, however, the term 'health' is recent and is subject to debate, as is the interaction between nutrition and wild bee health. We define bee health as a multidimensional concept in a novel integrative framework linking bee biological traits (physiology, stoichiometry, and disease) and environmental factors (floral diversity and nutritional landscapes). Linking information on tolerated nutritional niches and health in different bee species will allow us to better predict their distribution and responses to environmental change, and thus support wild pollinator conservation.
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Affiliation(s)
- M A Parreño
- Plant-Insect Interactions, TUM School of Life Science Systems, Technical University of Munich (TUM), Freising, Germany.
| | - C Alaux
- INRAE, Abeilles et Environnement, Avignon, France
| | - J-L Brunet
- INRAE, Abeilles et Environnement, Avignon, France
| | - L Buydens
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - M Filipiak
- Faculty of Biology, Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland.
| | - M Henry
- INRAE, Abeilles et Environnement, Avignon, France
| | - A Keller
- Center for Computational and Theoretical Biology, and Department of Bioinformatics, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - A-M Klein
- Chair of Nature Conservation and Landscape Ecology, University of Freiburg, Freiburg, Germany
| | - M Kuhlmann
- Zoological Museum of Kiel University, Kiel, Germany
| | - C Leroy
- INRAE, Abeilles et Environnement, Avignon, France
| | - I Meeus
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - E Palmer-Young
- US Department of Agriculture (USDA) Agricultural Research Service Bee Research Laboratory, Beltsville, MD, USA
| | - N Piot
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - F Requier
- Université Paris-Saclay, CNRS, IRD, UMR Évolution, Génomes, Comportement, et Écologie, 91198 Gif-sur-Yvette, France
| | - F Ruedenauer
- Plant-Insect Interactions, TUM School of Life Science Systems, Technical University of Munich (TUM), Freising, Germany
| | - G Smagghe
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - P C Stevenson
- Royal Botanic Gardens, Kew, Surrey TW9 3AE, UK; University of Greenwich, London, UK
| | - S D Leonhardt
- Plant-Insect Interactions, TUM School of Life Science Systems, Technical University of Munich (TUM), Freising, Germany.
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Keller A, Spits C. The Impact of Acquired Genetic Abnormalities on the Clinical Translation of Human Pluripotent Stem Cells. Cells 2021; 10:cells10113246. [PMID: 34831467 PMCID: PMC8625075 DOI: 10.3390/cells10113246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/07/2021] [Accepted: 11/17/2021] [Indexed: 12/23/2022] Open
Abstract
Human pluripotent stem cells (hPSC) are known to acquire chromosomal abnormalities, which range from point mutations to large copy number changes, including full chromosome aneuploidy. These aberrations have a wide-ranging influence on the state of cells, in both the undifferentiated and differentiated state. Currently, very little is known on how these abnormalities will impact the clinical translation of hPSC, and particularly their potential to prime cells for oncogenic transformation. A further complication is that many of these abnormalities exist in a mosaic state in culture, which complicates their detection with conventional karyotyping methods. In this review we discuss current knowledge on how these aberrations influence the cell state and how this may impact the future of research and the cells’ clinical potential.
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Quaresma A, Brodschneider R, Gratzer K, Gray A, Keller A, Kilpinen O, Rufino J, van der Steen J, Vejsnæs F, Pinto MA. Preservation methods of honey bee-collected pollen are not a source of bias in ITS2 metabarcoding. Environ Monit Assess 2021; 193:785. [PMID: 34755261 DOI: 10.1007/s10661-021-09563-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Pollen metabarcoding is emerging as a powerful tool for ecological research and offers unprecedented scale in citizen science projects for environmental monitoring via honey bees. Biases in metabarcoding can be introduced at any stage of sample processing and preservation is at the forefront of the pipeline. While in metabarcoding studies pollen has been preserved at - 20 °C (FRZ), this is not the best method for citizen scientists. Herein, we compared this method with ethanol (EtOH), silica gel (SG) and room temperature (RT) for preservation of pollen collected from hives in Austria and Denmark. After ~ 4 months of storage, DNAs were extracted with a food kit, and their quality and concentration measured. Most DNA extracts exhibited 260/280 absorbance ratios close to the optimal 1.8, with RT samples from Austria performing slightly worse than FRZ and SG samples (P < 0.027). Statistical differences were also detected for DNA concentration, with EtOH samples producing lower yields than RT and FRZ samples in both countries and SG in Austria (P < 0.042). Yet, qualitative and quantitative assessments of floral composition obtained using high-throughput sequencing with the ITS2 barcode gave non-significant effects of preservation methods on richness, relative abundance and Shannon diversity, in both countries. While freezing and ethanol are commonly employed for archiving tissue for molecular applications, desiccation is cheaper and easier to use regarding both storage and transportation. Since SG is less dependent on ambient humidity and less prone to contamination than RT, we recommend SG for preserving pollen for metabarcoding. SG is straightforward for laymen to use and hence robust for widespread application in citizen science studies.
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Affiliation(s)
- Andreia Quaresma
- Centro de Investigação de Montanha, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Robert Brodschneider
- Institute of Biology, University of Graz, Universitätsplatz 2, 8010, Graz, Austria
| | - Kristina Gratzer
- Institute of Biology, University of Graz, Universitätsplatz 2, 8010, Graz, Austria
| | - Alison Gray
- Department of Mathematics and Statistics, University of Strathclyde, Glasgow, UK
| | - Alexander Keller
- Center for Computational and Theoretical Biology, Hubland Nord, Würzburg, Germany
- Department of Bioinformatics, University of Würzburg, Am Hubland, BiocenterWürzburg, Germany
| | | | - José Rufino
- Research Centre in Digitalization and Intelligent Robotics (CeDRI), Instituto Politécnico de Bragança, Bragança, Portugal
| | | | | | - M Alice Pinto
- Centro de Investigação de Montanha, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal.
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Donovan E, Albuquerque K, Mantz C, Beriwal S, Keller A, Chen H, Lo S, Leung E. The Role of Stereotactic Body Radiotherapy (SBRT) in Oligometastatic and Oligoprogressive Gynecologic Malignancies: A Multi-Institutional Pooled Analysis. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lalonde R, Keller A, Huq S. Dosimetric Parameters Related to Local Control and Rate of Distant Metastases in NSCLC SBRT Patients. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Musunruu H, Keller A, Celebrezze J, Beriwal S. Wait and Watch Approach for Patients With Rectal Cancer Following Neoadjuvant Therapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Jain R, Keller A, Lee M, West N, Kazmerski T, Aitken M, Roe A, Hadjiliadis D, Uluer A, Mody S, Flume P, Bray L, Taylor-Cousar J. 169: Effect of pregnancy on lung function: Impact of CFTR modulators. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01594-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Koerner S, Baig T, Kim H, Rodriguez-Lopez J, Keller A, Beriwal S. Can We Avoid Ureters as Organs at Risk With MRI-Based Brachytherapy for Cervical Cancer? A Dosimetric Feasibility Study. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Keller A, Kim H, Beriwal S, Smith K, Vargo J. Cost-Effectiveness of Prophylactic Cranial Irradiation vs. MRI Surveillance for Extensive Stage Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Casanelles‐Abella J, Müller S, Keller A, Aleixo C, Alós Orti M, Chiron F, Deguines N, Hallikma T, Laanisto L, Pinho P, Samson R, Tryjanowski P, Van Mensel A, Pellissier L, Moretti M. How wild bees find a way in European cities: Pollen metabarcoding unravels multiple feeding strategies and their effects on distribution patterns in four wild bee species. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.14063] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joan Casanelles‐Abella
- Biodiversity and Conservation Biology Swiss Federal Institute for Forest, Snow and Landscape Research WSL Birmensdorf Switzerland
- Institute of Terrestrial Ecosystems ETH Zurich Zurich Switzerland
| | - Stefanie Müller
- Biodiversity and Conservation Biology Swiss Federal Institute for Forest, Snow and Landscape Research WSL Birmensdorf Switzerland
- Department of Evolutionary Biology and Environmental Studies University of Zurich Zurich Switzerland
| | - Alexander Keller
- Organismic and Cellular Interactions Biocenter Faculty of Biology Ludwig‐Maximilians‐Universität München Martinsried Germany
| | - Cristiana Aleixo
- Centre for Ecology, Evolution and Environmental Changes (cE3c) Faculdade de Ciências Universidade de Lisboa Lisboa Portugal
| | - Marta Alós Orti
- Institute of Agricultural and Environmental Sciences Estonian University of Life Sciences Tartu Estonia
| | - François Chiron
- Université Paris‐SaclayCNRSAgroParisTechEcologie Systématique Evolution Orsay France
| | - Nicolas Deguines
- Université Paris‐SaclayCNRSAgroParisTechEcologie Systématique Evolution Orsay France
- Laboratoire Ecologie et Biologie des Interactions Equipe Ecologie Evolution Symbiose Université de PoitiersUMR CNRS Nouvelle‐Aquitaine France
| | - Tiit Hallikma
- Institute of Agricultural and Environmental Sciences Estonian University of Life Sciences Tartu Estonia
| | - Lauri Laanisto
- Institute of Agricultural and Environmental Sciences Estonian University of Life Sciences Tartu Estonia
| | - Pedro Pinho
- Centre for Ecology, Evolution and Environmental Changes (cE3c) Faculdade de Ciências Universidade de Lisboa Lisboa Portugal
| | - Roeland Samson
- Laboratory of Environmental and Urban Ecology Department of Bioscience Engineering University of Antwerp Antwerp Belgium
| | - Piotr Tryjanowski
- Department of Zoology Poznan University of Life Sciences Poznań Poland
| | - Anskje Van Mensel
- Laboratory of Environmental and Urban Ecology Department of Bioscience Engineering University of Antwerp Antwerp Belgium
| | - Loïc Pellissier
- Institute of Terrestrial Ecosystems ETH Zurich Zurich Switzerland
- Land Change Science Swiss Federal Institute for Forest, Snow and Landscape Research WSL Birmensdorf Switzerland
| | - Marco Moretti
- Biodiversity and Conservation Biology Swiss Federal Institute for Forest, Snow and Landscape Research WSL Birmensdorf Switzerland
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Millenaar DN, Dillmann M, Fehlmann T, Flohr A, Mehran R, Al-Lamee R, Lauder L, Ukena C, Boehm M, Keller A, Mahfoud F. Sex differences in cardiovascular research. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Women are underrepresented in cardiovascular publications. We sought to investigate sex-specific differences in cardiovascular research over the last decade.
Methods and results
All 387,463 cardiovascular publications between 2010–2019 were retrieved from Web-of-Science and analyzed regarding the authors' sex, the average impact factor (IF), the number of citations, co-authors per article, and international collaborations. The number of cardiovascular research articles increased between 2010–2019 from 19,960 to 29,604 articles per year. The number of articles written by female first authors increased by 48.3% (6434 articles in 2010 and 11,343 articles in 2019) and by 35.0% for male first authors (13,526 articles in 2010 and 18,261 articles in 2019). The last/senior author was more likely to be female in articles with female first authors compared with male first authors (28.2% vs. 14.1%; odds ratio 2.48, 95% confidence interval 2.43–2.53, p<0.001). The average IF for articles by female first authors was lower compared to male (3.1±3.8 vs. 3.5±4.9, p<0.001). Likewise, the H-Index was lower for female than male first authors (1.07±0.74 vs. 1.25±0.98, p<0.001), as was the number of citations per articles (14.0±31.1 vs. 18.0±68.8 citations, p<0.001). Female first authors had fewer co-authors per article than their male peers (7.4±19.6 vs. 8.2±35.2; p<0.001) and were less represented in articles with >15 co-authors (3,623 articles by female and 8,941 by male first authors; ratio female to male 0.41). Scientific advancement as the ratio between female to male first authorships was highest in publications from Latin America (ratio 0.92) and lowest in Asia (ratio 0.40). Female authorship articles reached the highest IF in North America (average IF 3.7), the lowest Africa (average IF 1.8).
Conclusions
Publications in cardiovascular research have increased over the last decade, particularly by female authors. Female researchers are cited less often compared with their male peers and publish with fewer co-authors. The IF remains lower for articles by female researchers. Efforts to further increase women-led research activities are needed
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): German Cardiac SocietyGerman Research Foundation (DFG)
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Affiliation(s)
- D N Millenaar
- Saarland University Hospital, Dept. of Internal Medicine III,Cardiology, Angiology & Intensive Care, Homburg, Germany
| | - M Dillmann
- Saarland University, Chair for Clinical Bioinformatics, Saarbruecken, Germany
| | - T Fehlmann
- Saarland University, Chair for Clinical Bioinformatics, Saarbruecken, Germany
| | - A Flohr
- Saarland University, Chair for Clinical Bioinformatics, Saarbruecken, Germany
| | - R Mehran
- Icahn School of Medicine at Mount Sinai, New York, United States of America
| | - R Al-Lamee
- Imperial College London, London, United Kingdom
| | - L Lauder
- Saarland University Hospital, Dept. of Internal Medicine III,Cardiology, Angiology & Intensive Care, Homburg, Germany
| | - C Ukena
- Saarland University Hospital, Dept. of Internal Medicine III,Cardiology, Angiology & Intensive Care, Homburg, Germany
| | - M Boehm
- Saarland University Hospital, Dept. of Internal Medicine III,Cardiology, Angiology & Intensive Care, Homburg, Germany
| | - A Keller
- Saarland University, Chair for Clinical Bioinformatics, Saarbruecken, Germany
| | - F Mahfoud
- Saarland University Hospital, Dept. of Internal Medicine III,Cardiology, Angiology & Intensive Care, Homburg, Germany
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Keller A, Shah K, Delgado D, Vallakati A, Akinboboye O, Towne M, Olugemo K, Narayana A. Clinical characteristics of patients with hereditary transthyretin mutations primarily associated with cardiomyopathy and other rare transthyretin mutations: insights from a genetic testing programme. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background/Introduction
Hereditary transthyretin amyloidosis (hATTR; ATTRv) is a progressive, fatal disease caused by mutations in the transthyretin gene (TTR) that results in deposition of amyloid throughout the body, including in the heart. The p.V142I and p.T80A mutations typically manifest with a cardiomyopathy (CM) phenotype. Early diagnosis, which can be facilitated by genetic testing, is key to achieving optimal patient outcomes.
Purpose
To characterise the clinical profile and symptom burden of patients with hereditary transthyretin mutations associated primarily with a CM phenotype and rare hereditary transthyretin mutations.
Methods
This analysis used data from hATTR Compass, a genetic testing programme in the United States and Canada for patients suspected of having hATTR with polyneuropathy (PN) and patients with a family history of hATTR. Sequencing was performed using a TTR single-gene test, a gene panel of inherited cardiovascular disorders (CardioNext), or a gene panel of inherited neuromuscular disorders (NeuropathySelect). Akcea is aware of isolated data quality issues. Importantly, these do not affect the conclusions of this analysis.
Results
Cardiology specialists referred 466 patients with p.V142I, 15 with p.T80A, and 28 with rare TTR mutations to this programme. Of patients who reported sex, 57%, 53%, and 52% with p.V142I, p.T80A, and rare mutations, respectively, were male. Of patients who reported ethnicity, most with p.V142I were African American (94%), whereas the majority of patients with p.T80A and rare TTR mutations were Caucasian (100% and 69%, respectively). 24%, 60%, and 50%, of patients with p.V142I, p.T80A, and rare TTR mutations, respectively, had a family history of hATTR. The majority of patients with p.V142I (74%), p.T80A (53%), and rare TTR (54%) mutations were 65 years of age or older. Although most patients with p.V142I, p.T80A, and rare TTR mutations experienced symptoms/manifestations of heart disease (94% vs 100% vs 85%), many also presented with bilateral carpal tunnel syndrome (23% vs 44% vs 30%) and with sensory (27% vs 44% vs 65%), motor (15% vs 11% vs 25%), and autonomic (19% vs 11% vs 30%) dysfunction.
Conclusion
Most patients with the p.V142I mutation were African American, whereas many with p.T80A and other rare TTR mutations were Caucasian. Family history of hATTR was more common among patients with p.T80A and other rare TTR mutations than among patients with p.V142I. Regardless of the underlying mutation variant, many hATTR patients can present with various symptoms/manifestations aside from CM, such as PN and bilateral carpal tunnel syndrome. Recognising the neurological symptoms that can occur alongside CM and performing subsequent genetic testing facilitates diagnosis of hATTR. Early diagnosis is critical in hATTR because it is progressive and fatal, and early initiation of disease-modifying therapy is essential to optimising patient outcomes.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): This study was sponsored by Akcea Therapeutics, an affiliate of Ionis Pharmaceuticals, Inc.
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Affiliation(s)
- A Keller
- University of Pennsylvania, Philadelphia, United States of America
| | - K Shah
- VCU Health Systems, Richmond, United States of America
| | - D Delgado
- University Health Network, Toronto, Canada
| | - A Vallakati
- The Ohio State University, Columbus, United States of America
| | - O Akinboboye
- Laurelton Heart Specialist PC, Rosedale, United States of America
| | - M Towne
- Ambry Genetics, Aliso Viejo, United States of America
| | - K Olugemo
- Akcea Therapeutics, Boston, United States of America
| | - A Narayana
- Akcea Therapeutics, Boston, United States of America
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