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Yassine S, Almarouk S, Gschwandtner U, Auffret M, Fuhr P, Verin M, Hassan M. Electrophysiological signatures of anxiety in Parkinson's disease. Transl Psychiatry 2024; 14:66. [PMID: 38280864 PMCID: PMC10821912 DOI: 10.1038/s41398-024-02745-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 12/19/2023] [Accepted: 01/08/2024] [Indexed: 01/29/2024] Open
Abstract
Anxiety is a common non-motor symptom in Parkinson's disease (PD) occurring in up to 31% of the patients and affecting their quality of life. Despite the high prevalence, anxiety symptoms in PD are often underdiagnosed and, therefore, undertreated. To date, functional and structural neuroimaging studies have contributed to our understanding of the motor and cognitive symptomatology of PD. Yet, the underlying pathophysiology of anxiety symptoms in PD remains largely unknown and studies on their neural correlates are missing. Here, we used resting-state electroencephalography (RS-EEG) of 68 non-demented PD patients with or without clinically-defined anxiety and 25 healthy controls (HC) to assess spectral and functional connectivity fingerprints characterizing the PD-related anxiety. When comparing the brain activity of the PD anxious group (PD-A, N = 18) to both PD non-anxious (PD-NA, N = 50) and HC groups (N = 25) at baseline, our results showed increased fronto-parietal delta power and decreased frontal beta power depicting the PD-A group. Results also revealed hyper-connectivity networks predominating in delta, theta and gamma bands against prominent hypo-connectivity networks in alpha and beta bands as network signatures of anxiety in PD where the frontal, temporal, limbic and insular lobes exhibited the majority of significant connections. Moreover, the revealed EEG-based electrophysiological signatures were strongly associated with the clinical scores of anxiety and followed their progression trend over the course of the disease. We believe that the identification of the electrophysiological correlates of anxiety in PD using EEG is conducive toward more accurate prognosis and can ultimately support personalized psychiatric follow-up and the development of new therapeutic strategies.
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Affiliation(s)
- Sahar Yassine
- MRC Brain Dynamic Unit, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom.
- University of Rennes, LTSI - U1099, F-35000, Rennes, France.
- Behavior & Basal Ganglia, CIC1414, CIC-IT, CHU Rennes, Rennes, France.
| | - Sourour Almarouk
- University of Rennes, LTSI - U1099, F-35000, Rennes, France
- Behavior & Basal Ganglia, CIC1414, CIC-IT, CHU Rennes, Rennes, France
- Neuroscience Research Centre, Lebanese University, Faculty of Medicine, Beirut, Lebanon
| | - Ute Gschwandtner
- Dept. of Neurology, Hospitals of the University of Basel, Basel, Switzerland
| | - Manon Auffret
- University of Rennes, LTSI - U1099, F-35000, Rennes, France
- Behavior & Basal Ganglia, CIC1414, CIC-IT, CHU Rennes, Rennes, France
- Institut des Neurosciences Cliniques de Rennes (INCR), Rennes, France
- France Développement Electronique, Monswiller, France
| | - Peter Fuhr
- Dept. of Neurology, Hospitals of the University of Basel, Basel, Switzerland
| | - Marc Verin
- University of Rennes, LTSI - U1099, F-35000, Rennes, France
- Behavior & Basal Ganglia, CIC1414, CIC-IT, CHU Rennes, Rennes, France
- Institut des Neurosciences Cliniques de Rennes (INCR), Rennes, France
- Movement Disorders Unit, Neurology Department, Pontchaillou University Hospital, Rennes, France
| | - Mahmoud Hassan
- Behavior & Basal Ganglia, CIC1414, CIC-IT, CHU Rennes, Rennes, France
- School of Science and Engineering, Reykjavik University, Reykjavik, Iceland
- MINDIG, F-35000, Rennes, France
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Hamid AK, Pastor Arroyo EM, Lee SS, Wagner CA, Egli-Spichtig D. A novel method for automated crystal visualization and quantification in murine folic acid-induced acute kidney injury. Am J Physiol Renal Physiol 2024; 326:F105-F117. [PMID: 37881875 DOI: 10.1152/ajprenal.00140.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 09/14/2023] [Accepted: 10/06/2023] [Indexed: 10/27/2023] Open
Abstract
Folic acid (FA)-induced acute kidney injury (FA-AKI) is an increasingly prevalent rodent disease model involving the injection of a high dose of FA that culminates in renal FA crystal deposition and injury. However, the literature characterizing the FA-AKI model is sparse and dated in part due to the absence of a well-described methodology for the visualization and quantification of renal FA crystals. Using widely available materials and tools, we developed a straightforward and crystal-preserving histological protocol that can be coupled with automated imaging for renal FA crystal visualization and generated an automated macro for downstream crystal content quantification. The applicability of the method was demonstrated by characterizing the model in male and female C57BL6/JRj mice after 3 and 30 h of FA treatment. Kidneys from both sexes and timepoints showed a bimodal distribution of FA crystal deposition in the cortical and medullary regions while, compared with males, females exhibited higher renal FA crystal content at the 30-h timepoint accompanied by greater kidney weight and higher plasma urea. Despite comparable plasma phosphate concentrations, FA-AKI resulted in a substantially more elevated plasma intact fibroblast growth factor 23 (FGF23) in females, reflected by a similar pattern in osseous Fgf23 mRNA expression. Therefore, the presented method constitutes a valuable tool for the quantification of renal FA crystals, which can aid the mechanistic characterization of the FA-AKI model and serves as a means to control for confounding changes in FA crystallization when using the model for investigating early and prophylactic AKI therapeutic interventions.NEW & NOTEWORTHY Here, we describe a novel method for the visualization and quantification of renal folic acid (FA) crystals in the rodent FA-induced acute kidney injury (FA-AKI) model. The protocol involves a straightforward histological approach followed by fully automated imaging and quantification steps. Applicability was confirmed by showing that the FA-AKI model is sex-dependent. The method can serve as a tool to aid in characterizing FA-AKI and to control for studies investigating prophylactic therapeutic avenues using FA-AKI.
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Affiliation(s)
- Ahmad Kamal Hamid
- Institute of Physiology, University of Zurich, Zurich, Switzerland
- Swiss National Centre of Competence in Research NCCR Kidney.CH, Zurich, Switzerland
| | - Eva Maria Pastor Arroyo
- Institute of Physiology, University of Zurich, Zurich, Switzerland
- Swiss National Centre of Competence in Research NCCR Kidney.CH, Zurich, Switzerland
| | - Sung Sik Lee
- Scientific Center for Optical and Electron Microscopy, ETH Zurich, Zurich, Switzerland
- Institute of Biochemistry, Department of Biology, ETH Zurich, Zurich, Switzerland
| | - Carsten Alexander Wagner
- Institute of Physiology, University of Zurich, Zurich, Switzerland
- Swiss National Centre of Competence in Research NCCR Kidney.CH, Zurich, Switzerland
| | - Daniela Egli-Spichtig
- Institute of Physiology, University of Zurich, Zurich, Switzerland
- Swiss National Centre of Competence in Research NCCR Kidney.CH, Zurich, Switzerland
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Dengler Haunreiter V, Tarnutzer A, Bär J, von Matt M, Hertegonne S, Andreoni F, Vulin C, Künzi L, Menzi C, Kiefer P, Christen P, Vorholt JA, Zinkernagel AS. C-di-AMP levels modulate Staphylococcus aureus cell wall thickness, response to oxidative stress, and antibiotic resistance and tolerance. Microbiol Spectr 2023; 11:e0278823. [PMID: 37948390 PMCID: PMC10715141 DOI: 10.1128/spectrum.02788-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 10/12/2023] [Indexed: 11/12/2023] Open
Abstract
IMPORTANCE Antibiotic resistance and tolerance are substantial healthcare-related problems, hampering effective treatment of bacterial infections. Mutations in the phosphodiesterase GdpP, which degrades cyclic di-3', 5'-adenosine monophosphate (c-di-AMP), have recently been associated with resistance to beta-lactam antibiotics in clinical Staphylococcus aureus isolates. In this study, we show that high c-di-AMP levels decreased the cell size and increased the cell wall thickness in S. aureus mutant strains. As a consequence, an increase in resistance to cell wall targeting antibiotics, such as oxacillin and fosfomycin as well as in tolerance to ceftaroline, a cephalosporine used to treat methicillin-resistant S. aureus infections, was observed. These findings underline the importance of investigating the role of c-di-AMP in the development of tolerance and resistance to antibiotics in order to optimize treatment in the clinical setting.
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Affiliation(s)
- Vanina Dengler Haunreiter
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Andrea Tarnutzer
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Julian Bär
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Manuela von Matt
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Sanne Hertegonne
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Federica Andreoni
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Clément Vulin
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Lisa Künzi
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Carmen Menzi
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Patrick Kiefer
- Department of Biology, Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | - Philipp Christen
- Department of Biology, Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | - Julia A. Vorholt
- Department of Biology, Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | - Annelies S. Zinkernagel
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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Dainat B, Oberhaensli S, Ory F, Dietemann V. New reference genomes of honey bee-associated bacteria Paenibacillus melissococcoides, Paenibacillus dendritiformis, and Paenibacillus thiaminolyticus. Microbiol Resour Announc 2023; 12:e0020923. [PMID: 37530538 PMCID: PMC10508097 DOI: 10.1128/mra.00209-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 06/18/2023] [Indexed: 08/03/2023] Open
Abstract
We sequenced the genomes of recently discovered Paenibacillus melissococcoides (CCOS 2000) and of the type strains of closely related P. thiaminolyticus (DSM 7262) and P. dendritiformis (LMG 21716). The three genomes set the basis to unambiguous diagnostic of these honey bee associated Paenibacillus bacteria.
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Affiliation(s)
- Benjamin Dainat
- Swiss Bee Research Center, Agroscope Liebefeld, Bern, Switzerland
| | - Simone Oberhaensli
- Interfaculty Bioinformatics Unit and SIB Swiss Institute of Bioinformatics, University of Bern, Bern, Switzerland
| | - Florine Ory
- Swiss Bee Research Center, Agroscope Liebefeld, Bern, Switzerland
| | - Vincent Dietemann
- Swiss Bee Research Center, Agroscope Liebefeld, Bern, Switzerland
- Department of Ecology and Evolution, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland
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Gangl N, Conring F, Federspiel A, Wiest R, Walther S, Stegmayer K. Resting-state perfusion in motor and fronto-limbic areas is linked to diminished expression of emotion and speech in schizophrenia. Schizophrenia (Heidelb) 2023; 9:51. [PMID: 37573445 PMCID: PMC10423240 DOI: 10.1038/s41537-023-00384-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 07/25/2023] [Indexed: 08/14/2023]
Abstract
Negative symptoms (NS) are a core component of schizophrenia affecting community functioning and quality of life. We tested neural correlates of NS considering NS factors and consensus subdomains. We assessed NS using the Clinical Assessment Interview for Negative Symptoms and the Scale for Assessment of Negative Symptoms. Arterial spin labeling was applied to measure resting-state cerebral blood flow (rCBF) in 47 schizophrenia patients and 44 healthy controls. Multiple regression analyses calculated the relationship between rCBF and NS severity. We found an association between diminished expression (DE) and brain perfusion within the cerebellar anterior lobe and vermis, and the pre-, and supplementary motor area. Blunted affect was linked to fusiform gyrus and alogia to fronto-striatal rCBF. In contrast, motivation and pleasure was not associated with rCBF. These results highlight the key role of motor areas for DE. Considering NS factors and consensus subdomains may help identifying specific pathophysiological pathways of NS.
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Affiliation(s)
- Nicole Gangl
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, Bern, Switzerland.
- Graduate School for Health Sciences, University of Bern, Bern, Switzerland.
| | - Frauke Conring
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, Bern, Switzerland
- Graduate School for Health Sciences, University of Bern, Bern, Switzerland
| | - Andrea Federspiel
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, Bern, Switzerland
| | - Roland Wiest
- Support Center of Advanced Neuroimaging (SCAN), University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern, Switzerland
| | - Sebastian Walther
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, Bern, Switzerland
| | - Katharina Stegmayer
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, Bern, Switzerland
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Zurbuchen Y, Michler J, Taeschler P, Adamo S, Cervia C, Raeber ME, Acar IE, Nilsson J, Warnatz K, Soyka MB, Moor AE, Boyman O. Human memory B cells show plasticity and adopt multiple fates upon recall response to SARS-CoV-2. Nat Immunol 2023; 24:955-965. [PMID: 37106039 PMCID: PMC10232369 DOI: 10.1038/s41590-023-01497-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 03/21/2023] [Indexed: 04/29/2023]
Abstract
The B cell response to different pathogens uses tailored effector mechanisms and results in functionally specialized memory B (Bm) cell subsets, including CD21+ resting, CD21-CD27+ activated and CD21-CD27- Bm cells. The interrelatedness between these Bm cell subsets remains unknown. Here we showed that single severe acute respiratory syndrome coronavirus 2-specific Bm cell clones showed plasticity upon antigen rechallenge in previously exposed individuals. CD21- Bm cells were the predominant subsets during acute infection and early after severe acute respiratory syndrome coronavirus 2-specific immunization. At months 6 and 12 post-infection, CD21+ resting Bm cells were the major Bm cell subset in the circulation and were also detected in peripheral lymphoid organs, where they carried tissue residency markers. Tracking of individual B cell clones by B cell receptor sequencing revealed that previously fated Bm cell clones could redifferentiate upon antigen rechallenge into other Bm cell subsets, including CD21-CD27- Bm cells, demonstrating that single Bm cell clones can adopt functionally different trajectories.
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Affiliation(s)
- Yves Zurbuchen
- Department of Immunology, University Hospital Zurich, Zurich, Switzerland
| | - Jan Michler
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland
| | - Patrick Taeschler
- Department of Immunology, University Hospital Zurich, Zurich, Switzerland
| | - Sarah Adamo
- Department of Immunology, University Hospital Zurich, Zurich, Switzerland
| | - Carlo Cervia
- Department of Immunology, University Hospital Zurich, Zurich, Switzerland
| | - Miro E Raeber
- Department of Immunology, University Hospital Zurich, Zurich, Switzerland
| | - Ilhan E Acar
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland
| | - Jakob Nilsson
- Department of Immunology, University Hospital Zurich, Zurich, Switzerland
| | - Klaus Warnatz
- Department of Immunology, University Hospital Zurich, Zurich, Switzerland
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Michael B Soyka
- Department of Otorhinolaryngology, Head and Neck Surgery, University and University Hospital Zurich, Zurich, Switzerland
| | - Andreas E Moor
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland.
| | - Onur Boyman
- Department of Immunology, University Hospital Zurich, Zurich, Switzerland.
- Faculty of Medicine and Faculty of Science, University of Zurich, Zurich, Switzerland.
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Schwab FD, Scheidmann MC, Ozimski LL, Kling A, Armbrecht L, Ryser T, Krol I, Strittmatter K, Nguyen-Sträuli BD, Jacob F, Fedier A, Heinzelmann-Schwarz V, Wicki A, Dittrich PS, Aceto N. MyCTC chip: microfluidic-based drug screen with patient-derived tumour cells from liquid biopsies. Microsyst Nanoeng 2022; 8:130. [PMID: 36561926 PMCID: PMC9763115 DOI: 10.1038/s41378-022-00467-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/22/2022] [Accepted: 10/24/2022] [Indexed: 06/17/2023]
Abstract
Cancer patients with advanced disease are characterized by intrinsic challenges in predicting drug response patterns, often leading to ineffective treatment. Current clinical practice for treatment decision-making is commonly based on primary or secondary tumour biopsies, yet when disease progression accelerates, tissue biopsies are not performed on a regular basis. It is in this context that liquid biopsies may offer a unique window to uncover key vulnerabilities, providing valuable information about previously underappreciated treatment opportunities. Here, we present MyCTC chip, a novel microfluidic device enabling the isolation, culture and drug susceptibility testing of cancer cells derived from liquid biopsies. Cancer cell capture is achieved through a label-free, antigen-agnostic enrichment method, and it is followed by cultivation in dedicated conditions, allowing on-chip expansion of captured cells. Upon growth, cancer cells are then transferred to drug screen chambers located within the same device, where multiple compounds can be tested simultaneously. We demonstrate MyCTC chip performance by means of spike-in experiments with patient-derived breast circulating tumour cells, enabling >95% capture rates, as well as prospective processing of blood from breast cancer patients and ascites fluid from patients with ovarian, tubal and endometrial cancer, where sensitivity to specific chemotherapeutic agents was identified. Together, we provide evidence that MyCTC chip may be used to identify personalized drug response patterns in patients with advanced metastatic disease and with limited treatment opportunities.
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Affiliation(s)
- Fabienne D. Schwab
- Department of Biomedicine, Cancer Metastasis Laboratory, University of Basel, Basel, Switzerland
- Department of Gynaecologic Oncology, University Hospital Basel, Basel, Switzerland
| | - Manuel C. Scheidmann
- Department of Biomedicine, Cancer Metastasis Laboratory, University of Basel, Basel, Switzerland
| | - Lauren L. Ozimski
- Department of Biomedicine, Cancer Metastasis Laboratory, University of Basel, Basel, Switzerland
- Department of Biology, Swiss Federal Institute of Technology Zurich (ETH Zurich), Zurich, Switzerland
| | - André Kling
- Department of Biosystems Science and Engineering, Swiss Federal Institute of Technology Zurich (ETH Zurich), Basel, Switzerland
| | - Lucas Armbrecht
- Department of Biosystems Science and Engineering, Swiss Federal Institute of Technology Zurich (ETH Zurich), Basel, Switzerland
| | - Till Ryser
- Department of Biomedicine, Cancer Metastasis Laboratory, University of Basel, Basel, Switzerland
| | - Ilona Krol
- Department of Biomedicine, Cancer Metastasis Laboratory, University of Basel, Basel, Switzerland
- Department of Biology, Swiss Federal Institute of Technology Zurich (ETH Zurich), Zurich, Switzerland
| | - Karin Strittmatter
- Department of Biomedicine, Cancer Metastasis Laboratory, University of Basel, Basel, Switzerland
- Department of Biology, Swiss Federal Institute of Technology Zurich (ETH Zurich), Zurich, Switzerland
| | - Bich Doan Nguyen-Sträuli
- Department of Biology, Swiss Federal Institute of Technology Zurich (ETH Zurich), Zurich, Switzerland
- Department of Gynaecology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Francis Jacob
- Department of Biomedicine, Ovarian Cancer Research, University Hospital Basel and University of Basel, Basel, Switzerland
| | - André Fedier
- Department of Biomedicine, Ovarian Cancer Research, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Viola Heinzelmann-Schwarz
- Department of Gynaecologic Oncology, University Hospital Basel, Basel, Switzerland
- Department of Biomedicine, Ovarian Cancer Research, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Andreas Wicki
- University of Zurich and University Hospital Zurich, Zurich, Switzerland
| | - Petra S. Dittrich
- Department of Biosystems Science and Engineering, Swiss Federal Institute of Technology Zurich (ETH Zurich), Basel, Switzerland
| | - Nicola Aceto
- Department of Biology, Swiss Federal Institute of Technology Zurich (ETH Zurich), Zurich, Switzerland
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