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Hammer N, Vogel P, Lee S, Roeper J. Optogenetic action potentials and intrinsic pacemaker interplay in retrogradely identified midbrain dopamine neurons. Eur J Neurosci 2024; 59:1311-1331. [PMID: 38056070 DOI: 10.1111/ejn.16208] [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: 07/29/2023] [Revised: 11/09/2023] [Accepted: 11/15/2023] [Indexed: 12/08/2023]
Abstract
Dissecting the diversity of midbrain dopamine (DA) neurons by optotagging is a promising addition to better identify their functional properties and contribution to motivated behavior. Retrograde molecular targeting of DA neurons with specific axonal projection allows further refinement of this approach. Here, we focus on adult mouse DA neurons in the substantia nigra pars compacta (SNc) projecting to dorsal striatum (DS) by demonstrating the selectivity of a floxed AAV9-based retrograde channelrhodopsin-eYFP (ChR-eYFP) labeling approach in DAT-cre mice. Furthermore, we show the utility of a sparse labeling version for anatomical single-cell reconstruction and demonstrate that ChR-eYFR expressing DA neurons retain intrinsic functional properties indistinguishable from conventionally retrogradely red-beads-labeled neurons. We systematically explore the properties of optogenetically evoked action potentials (oAPs) and their interaction with intrinsic pacemaking in this defined subpopulation of DA neurons. We found that the shape of the oAP and its first derivative, as a proxy for extracellularly recorded APs, is highly distinct from spontaneous APs (sAPs) of the same neurons and systematically varies across the pacemaker duty cycle. The timing of the oAP also affects the backbone oscillator of the intrinsic pacemaker by introducing transient "compensatory pauses". Characterizing this systematic interplay between oAPs and sAPs in defined DA neurons will also facilitate a refinement of DA neuron optotagging in vivo.
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Affiliation(s)
- Niklas Hammer
- Institute of Neurophysiology, Neuroscience Center, Goethe University Frankfurt, Germany
| | - Pascal Vogel
- Institute of Neurophysiology, Neuroscience Center, Goethe University Frankfurt, Germany
| | - Sanghun Lee
- Institute of Neurophysiology, Neuroscience Center, Goethe University Frankfurt, Germany
| | - Jochen Roeper
- Institute of Neurophysiology, Neuroscience Center, Goethe University Frankfurt, Germany
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Ortner NJ, Sah A, Paradiso E, Shin J, Stojanovic S, Hammer N, Haritonova M, Hofer NT, Marcantoni A, Guarina L, Tuluc P, Theiner T, Pitterl F, Ebner K, Oberacher H, Carbone E, Stefanova N, Ferraguti F, Singewald N, Roeper J, Striessnig J. The human channel gating-modifying A749G CACNA1D (Cav1.3) variant induces a neurodevelopmental syndrome-like phenotype in mice. JCI Insight 2023; 8:e162100. [PMID: 37698939 PMCID: PMC10619503 DOI: 10.1172/jci.insight.162100] [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: 06/09/2022] [Accepted: 09/06/2023] [Indexed: 09/14/2023] Open
Abstract
Germline de novo missense variants of the CACNA1D gene, encoding the pore-forming α1 subunit of Cav1.3 L-type Ca2+ channels (LTCCs), have been found in patients with neurodevelopmental and endocrine dysfunction, but their disease-causing potential is unproven. These variants alter channel gating, enabling enhanced Cav1.3 activity, suggesting Cav1.3 inhibition as a potential therapeutic option. Here we provide proof of the disease-causing nature of such gating-modifying CACNA1D variants using mice (Cav1.3AG) containing the A749G variant reported de novo in a patient with autism spectrum disorder (ASD) and intellectual impairment. In heterozygous mutants, native LTCC currents in adrenal chromaffin cells exhibited gating changes as predicted from heterologous expression. The A749G mutation induced aberrant excitability of dorsomedial striatum-projecting substantia nigra dopamine neurons and medium spiny neurons in the dorsal striatum. The phenotype observed in heterozygous mutants reproduced many of the abnormalities described within the human disease spectrum, including developmental delay, social deficit, and pronounced hyperactivity without major changes in gross neuroanatomy. Despite an approximately 7-fold higher sensitivity of A749G-containing channels to the LTCC inhibitor isradipine, oral pretreatment over 2 days did not rescue the hyperlocomotion. Cav1.3AG mice confirm the pathogenicity of the A749G variant and point toward a pathogenetic role of altered signaling in the dopamine midbrain system.
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Affiliation(s)
- Nadine J. Ortner
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Anupam Sah
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Enrica Paradiso
- Department of Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Josef Shin
- Institute for Neurophysiology, Goethe University, Frankfurt, Germany
| | | | - Niklas Hammer
- Institute for Neurophysiology, Goethe University, Frankfurt, Germany
| | - Maria Haritonova
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Nadja T. Hofer
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Andrea Marcantoni
- Department of Drug Science, N.I.S. Centre, University of Torino, Torino, Italy
| | - Laura Guarina
- Department of Drug Science, N.I.S. Centre, University of Torino, Torino, Italy
| | - Petronel Tuluc
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Tamara Theiner
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Florian Pitterl
- Institute of Legal Medicine and Core Facility Metabolomics and
| | - Karl Ebner
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | | | - Emilio Carbone
- Department of Drug Science, N.I.S. Centre, University of Torino, Torino, Italy
| | - Nadia Stefanova
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Francesco Ferraguti
- Department of Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Nicolas Singewald
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Jochen Roeper
- Institute for Neurophysiology, Goethe University, Frankfurt, Germany
| | - Jörg Striessnig
- Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
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Willborn K, Wagner J, Roeper J, Falk M, Heukamp L, Griesinger F. 966P Evaluation of the prognostic marker of PD-L1 expression after combined radio-chemotherapy in patients with non-small cell lung cancer (NSCLC) stage III. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1092] [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] Open
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Roeper J, Blanksma A, Kathmann L, Ansmann L, Griesinger F. 1155P Adherence to treatment recommendations from multidisciplinary tumor boards: Initial data from 644 lung cancer cases. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1279] [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] Open
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Wagner J, Roeper J, Ansmann L, Griesinger F. 393P Adherence to treatment recommendations from multidisciplinary tumor boards: Initial data from 562 colorectal cancer cases. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.531] [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: 11/01/2022] Open
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Roeper J, Ansmann L, Blanksma A, Griesinger F. EP04.01-014 Adherence to Treatment Recommendations From Multidisciplinary Tumor Boards. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.426] [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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Shin J, Kovacheva L, Thomas D, Stojanovic S, Knowlton CJ, Mankel J, Boehm J, Farassat N, Paladini C, Striessnig J, Canavier CC, Geisslinger G, Roeper J. Ca v1.3 calcium channels are full-range linear amplifiers of firing frequencies in lateral DA SN neurons. Sci Adv 2022; 8:eabm4560. [PMID: 35675413 PMCID: PMC9177074 DOI: 10.1126/sciadv.abm4560] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 04/22/2022] [Indexed: 05/12/2023]
Abstract
The low-threshold L-type calcium channel Cav1.3 accelerates the pacemaker rate in the heart, but its functional role for the extended dynamic range of neuronal firing is still unresolved. Here, we show that Cav1.3 calcium channels act as unexpectedly simple, full-range linear amplifiers of firing rates for lateral dopamine substantia nigra (DA SN) neurons in mice. This means that they boost in vitro or in vivo firing frequencies between 2 and 50 hertz by about 30%. Furthermore, we demonstrate that clinically relevant, low nanomolar concentrations of the L-type channel inhibitor isradipine selectively reduce the in vivo firing activity of these nigrostriatal DA SN neurons at therapeutic plasma concentrations. Thus, our study identifies the pacemaker function of neuronal Cav1.3 channels and provides direct evidence that repurposing dihydropyridines such as isradipine is feasible to selectively modulate the in vivo activity of highly vulnerable DA SN subpopulations in Parkinson's disease.
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Affiliation(s)
- Josef Shin
- Goethe University, Institute of Neurophysiology, Neuroscience Center, Frankfurt am Main, Germany
| | - Lora Kovacheva
- Goethe University, Institute of Neurophysiology, Neuroscience Center, Frankfurt am Main, Germany
| | - Dominique Thomas
- Pharmazentrum Frankfurt/ZAFES, Institute of Clinical Pharmacology, Frankfurt am Main, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP and Fraunhofer Cluster of Excellence for Immune Mediated Diseases CIMD, Frankfurt am Main, Germany
| | - Strahinja Stojanovic
- Goethe University, Institute of Neurophysiology, Neuroscience Center, Frankfurt am Main, Germany
| | - Christopher J. Knowlton
- Department of Cell Biology and Anatomy, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Johanna Mankel
- Goethe University, Institute of Neurophysiology, Neuroscience Center, Frankfurt am Main, Germany
| | - Johannes Boehm
- Goethe University, Institute of Neurophysiology, Neuroscience Center, Frankfurt am Main, Germany
| | - Navid Farassat
- Goethe University, Institute of Neurophysiology, Neuroscience Center, Frankfurt am Main, Germany
| | - Carlos Paladini
- UTSA Neuroscience Institute, University of Texas at San Antonio, San Antonio, TX, USA
| | - Jörg Striessnig
- University of Innsbruck, Department of Pharmacology and Toxicology, Center for Molecular Biosciences, Innsbruck, Austria
| | - Carmen C. Canavier
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP and Fraunhofer Cluster of Excellence for Immune Mediated Diseases CIMD, Frankfurt am Main, Germany
| | - Gerd Geisslinger
- Pharmazentrum Frankfurt/ZAFES, Institute of Clinical Pharmacology, Frankfurt am Main, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP and Fraunhofer Cluster of Excellence for Immune Mediated Diseases CIMD, Frankfurt am Main, Germany
| | - Jochen Roeper
- Goethe University, Institute of Neurophysiology, Neuroscience Center, Frankfurt am Main, Germany
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Roeper J, Ansmann L, Kathmann L, Blanksma A, Wedeken K, Griesinger F. 70P Adherence to treatment recommendations from multidisciplinary tumor boards. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.02.079] [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: 11/01/2022] Open
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Roeper J, Reichert-Schlax J, Zlatkin-Troitschanskaia O, Klose V, Weber M, Nagel MT. Patterns of Domain-Specific Learning Among Medical Undergraduate Students in Relation to Confidence in Their Physiology Knowledge: Insights From a Pre-post Study. Front Psychol 2022; 12:562211. [PMID: 35222131 PMCID: PMC8867175 DOI: 10.3389/fpsyg.2021.562211] [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] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 12/13/2021] [Indexed: 11/13/2022] Open
Abstract
RESEARCH FOCUS The promotion of domain-specific knowledge is a central goal of higher education and, in the field of medicine, it is particularly essential to promote global health. Domain-specific knowledge on its own is not exhaustive; confidence regarding the factual truth of this knowledge content is also required. An increase in both knowledge and confidence is considered a necessary prerequisite for making professional decisions in the clinical context. Especially the knowledge of human physiology is fundamental and simultaneously critical to medical decision-making. However, numerous studies have shown difficulties in understanding and misconceptions in this area of knowledge. Therefore, we investigate (i) how preclinical medical students acquire knowledge in physiology over the course of their studies and simultaneously gain confidence in the correctness of this knowledge as well as (ii) the interrelations between these variables, and (iii) how they affect the development of domain-specific knowledge. METHOD In a pre-post study, 169 medical students' development of physiology knowledge and their confidence related to this knowledge were assessed via paper-pencil questionnaires before and after attending physiology seminars for one semester. Data from a longitudinal sample of n = 97 students were analyzed using mean comparisons, regression analyses, and latent class analyses (LCAs). In addition, four types of item responses were formed based on confidence and correctness in the knowledge test. RESULTS We found a significant and large increase in the students' physiology knowledge, with task-related confidence being the strongest predictor (apart from learning motivation). Moreover, a significantly higher level of confidence at t2 was confirmed, with the level of prior confidence being a strong predictor (apart from knowledge at t2). Furthermore, based on the students' development of knowledge and confidence levels between measurement points, three empirically distinct groups were distinguished: knowledge gainers, confidence gainers, and overall gainers. The students whose confidence in incorrect knowledge increased constituted one particularly striking group. Therefore, the training of both knowledge and the ability to critically reflect on one's knowledge and skills as well as an assessment of their development in education is required, especially in professions such as medicine, where knowledge-based decisions made with confidence are of vital importance.
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Affiliation(s)
- Jochen Roeper
- Department of Neurophysiology, University Hospital Frankfurt, Frankfurt, Germany
| | - Jasmin Reichert-Schlax
- Department of Business and Economics Education, Johannes Gutenberg University Mainz, Mainz, Germany
| | | | - Verena Klose
- Department of Neurophysiology, University Hospital Frankfurt, Frankfurt, Germany
| | - Maruschka Weber
- Department of Neurophysiology, University Hospital Frankfurt, Frankfurt, Germany
| | - Marie-Theres Nagel
- Department of Business and Economics Education, Johannes Gutenberg University Mainz, Mainz, Germany
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Montero T, Gatica RI, Farassat N, Meza R, González-Cabrera C, Roeper J, Henny P. Dendritic Architecture Predicts in vivo Firing Pattern in Mouse Ventral Tegmental Area and Substantia Nigra Dopaminergic Neurons. Front Neural Circuits 2021; 15:769342. [PMID: 34867214 PMCID: PMC8640462 DOI: 10.3389/fncir.2021.769342] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/12/2021] [Indexed: 11/13/2022] Open
Abstract
The firing activity of ventral tegmental area (VTA) and substantia nigra pars compacta (SNc) dopaminergic (DA) neurons is an important factor in shaping DA release and its role in motivated behavior. Dendrites in DA neurons are the main postsynaptic compartment and, along with cell body and axon initial segment, contribute to action potential generation and firing pattern. In this study, the organization of the dendritic domain in individual VTA and SNc DA neurons of adult male mice, and their relationship to in vivo spontaneous firing, are described. In comparison with dorsal VTA DA neurons, ventrally located VTA neurons (as measured by cell body location) possess a shorter total dendritic length and simpler dendritic architecture, and exhibit the most irregular in vivo firing patterns among DA neurons. In contrast, for DA neurons in the SNc, the higher irregularity of firing was related to a smaller dendritic domain, as measured by convex hull volumes. However, firing properties were also related to the specific regional distribution of the dendritic tree. Thus, VTA DA neurons with a larger extension of their dendritic tree within the parabrachial pigmented (PBP) nucleus fired more regularly compared with those with relatively more dendrites extending outside the PBP. For DA neurons in the SNc, enhanced firing irregularity was associated with a smaller proportion of dendrites penetrating the substantia nigra pars reticulata. These results suggest that differences in dendritic morphology contribute to the in vivo firing properties of individual DA neurons, and that the existence of region-specific synaptic connectivity rules that shape firing diversity.
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Affiliation(s)
- Trinidad Montero
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rafael Ignacio Gatica
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Navid Farassat
- Institute of Neurophysiology, Goethe University, Frankfurt, Germany
| | - Rodrigo Meza
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Cristian González-Cabrera
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jochen Roeper
- Institute of Neurophysiology, Goethe University, Frankfurt, Germany
| | - Pablo Henny
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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Karagiannis A, Gallopin T, Lacroix A, Plaisier F, Piquet J, Geoffroy H, Hepp R, Naudé J, Le Gac B, Egger R, Lambolez B, Li D, Rossier J, Staiger JF, Imamura H, Seino S, Roeper J, Cauli B. Lactate is an energy substrate for rodent cortical neurons and enhances their firing activity. eLife 2021; 10:e71424. [PMID: 34766906 PMCID: PMC8651295 DOI: 10.7554/elife.71424] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 11/09/2021] [Indexed: 12/12/2022] Open
Abstract
Glucose is the mandatory fuel for the brain, yet the relative contribution of glucose and lactate for neuronal energy metabolism is unclear. We found that increased lactate, but not glucose concentration, enhances the spiking activity of neurons of the cerebral cortex. Enhanced spiking was dependent on ATP-sensitive potassium (KATP) channels formed with KCNJ11 and ABCC8 subunits, which we show are functionally expressed in most neocortical neuronal types. We also demonstrate the ability of cortical neurons to take-up and metabolize lactate. We further reveal that ATP is produced by cortical neurons largely via oxidative phosphorylation and only modestly by glycolysis. Our data demonstrate that in active neurons, lactate is preferred to glucose as an energy substrate, and that lactate metabolism shapes neuronal activity in the neocortex through KATP channels. Our results highlight the importance of metabolic crosstalk between neurons and astrocytes for brain function.
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Affiliation(s)
- Anastassios Karagiannis
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
| | - Thierry Gallopin
- Brain Plasticity Unit, CNRS UMR 8249, CNRS, ESPCI ParisParisFrance
| | - Alexandre Lacroix
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
| | - Fabrice Plaisier
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
| | - Juliette Piquet
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
| | - Hélène Geoffroy
- Brain Plasticity Unit, CNRS UMR 8249, CNRS, ESPCI ParisParisFrance
| | - Régine Hepp
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
| | - Jérémie Naudé
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
| | - Benjamin Le Gac
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
| | - Richard Egger
- Institute for Neurophysiology, Goethe University FrankfurtFrankfurtGermany
| | - Bertrand Lambolez
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
| | - Dongdong Li
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
| | - Jean Rossier
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
- Brain Plasticity Unit, CNRS UMR 8249, CNRS, ESPCI ParisParisFrance
| | - Jochen F Staiger
- Institute for Neuroanatomy, University Medical Center Göttingen, Georg-August- University GöttingenGoettingenGermany
| | - Hiromi Imamura
- Graduate School of Biostudies, Kyoto UniversityKyotoJapan
| | - Susumu Seino
- Division of Molecular and Metabolic Medicine, Kobe University Graduate School of MedicineHyogoJapan
| | - Jochen Roeper
- Institute for Neurophysiology, Goethe University FrankfurtFrankfurtGermany
| | - Bruno Cauli
- Sorbonne Université, CNRS, INSERM, Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS-IBPS)ParisFrance
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Wagner J, Roeper J, Heukamp L, Willborn K, Griesinger F. P29.08 Evaluation of the Prognostic Marker of PD-L1 Expression After Combined Radiochemotherapy in Patients With NSCLC Stage III. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.403] [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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Roeper J, Blanksma A, Kathmann L, Ansmann L, Griesinger F. P10.05 Adherence to Treatment Recommendations From Multidisciplinary Tumor Boards. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.310] [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: 11/30/2022]
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Knowlton CJ, Ziouziou TI, Hammer N, Roeper J, Canavier CC. Inactivation mode of sodium channels defines the different maximal firing rates of conventional versus atypical midbrain dopamine neurons. PLoS Comput Biol 2021; 17:e1009371. [PMID: 34534209 PMCID: PMC8480832 DOI: 10.1371/journal.pcbi.1009371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 09/29/2021] [Accepted: 08/23/2021] [Indexed: 12/21/2022] Open
Abstract
Two subpopulations of midbrain dopamine (DA) neurons are known to have different dynamic firing ranges in vitro that correspond to distinct projection targets: the originally identified conventional DA neurons project to the dorsal striatum and the lateral shell of the nucleus accumbens, whereas an atypical DA population with higher maximum firing frequencies projects to prefrontal regions and other limbic regions including the medial shell of nucleus accumbens. Using a computational model, we show that previously identified differences in biophysical properties do not fully account for the larger dynamic range of the atypical population and predict that the major difference is that originally identified conventional cells have larger occupancy of voltage-gated sodium channels in a long-term inactivated state that recovers slowly; stronger sodium and potassium conductances during action potential firing are also predicted for the conventional compared to the atypical DA population. These differences in sodium channel gating imply that longer intervals between spikes are required in the conventional population for full recovery from long-term inactivation induced by the preceding spike, hence the lower maximum frequency. These same differences can also change the bifurcation structure to account for distinct modes of entry into depolarization block: abrupt versus gradual. The model predicted that in cells that have entered depolarization block, it is much more likely that an additional depolarization can evoke an action potential in conventional DA population. New experiments comparing lateral to medial shell projecting neurons confirmed this model prediction, with implications for differential synaptic integration in the two populations. We developed a theoretical and mathematical framework that could explain the major electrophysiological differences between the conventional midbrain dopamine (DA) neurons with a low maximum firing rate, and the more recently identified atypical DA neurons. Testable predictions from this framework were then verified with in vitro patch-clamp recordings from DA neurons with identified phenotypes and projection targets. Since different subpopulations of DA neurons participate in different circuits, and these circuits are likely differentially dysregulated in diseases such as addiction, Parkinson disease, and schizophrenia, it is important to identify the differences of their intrinsic electrophysiological properties as a prelude to developing more precisely targeted therapies.
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Affiliation(s)
- Christopher J. Knowlton
- Department of Cell Biology and Anatomy, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | | | - Niklas Hammer
- Institut für Neurophysiologie, Goethe University, Frankfurt, Germany
| | - Jochen Roeper
- Institut für Neurophysiologie, Goethe University, Frankfurt, Germany
| | - Carmen C. Canavier
- Department of Cell Biology and Anatomy, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
- * E-mail:
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Roeper J, Christopoulos P, Falk M, Heukamp L, Stenzinger A, Thomas M, Griesinger F. 139P The impact of TP53 mutations on EGFR mt+ NSCLC IV patients treated with 3rd generation TKI on 2nd line or further line therapy: Real-world data from two certified lung cancer centers in Germany. J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01981-x] [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: 11/26/2022]
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Griesinger F, Roeper J, Willborn K, Prenzel R, Scriba D, Sebastian M. 88P Curative treatment in EGFR mt+ NSCLC stage III by induction TKI-chemotherapy combination: Feasibility and outcome in 10 cases. J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01930-4] [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: 10/21/2022]
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Roeper J, Falk M, Tiemann M, Heukamp L, Wesseler C, Wiest G, Sackmann S, Ukena D, Griesinger F. P74.02 Treatment Patterns of EGFR mt+ NSCLC IV pts: Real World Data of the NOWEL Network. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1034] [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: 11/24/2022]
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18
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Roeper J, Ansmann L, Kathmann L, Wedeken K, Griesinger F. P09.31 Adherence to Treatment Recommendations from Multidisciplinary Tumor Boards. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.459] [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: 11/28/2022]
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Chiu WH, Kovacheva L, Musgrove RE, Arien-Zakay H, Koprich JB, Brotchie JM, Yaka R, Ben-Zvi D, Hanani M, Roeper J, Goldberg JA. α-Synuclein-induced Kv4 channelopathy in mouse vagal motoneurons drives nonmotor parkinsonian symptoms. Sci Adv 2021; 7:7/11/eabd3994. [PMID: 33692101 PMCID: PMC7946367 DOI: 10.1126/sciadv.abd3994] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 01/25/2021] [Indexed: 05/06/2023]
Abstract
No disease-modifying therapy is currently available for Parkinson's disease (PD), the second most common neurodegenerative disease. The long nonmotor prodromal phase of PD is a window of opportunity for early detection and intervention. However, we lack the pathophysiological understanding to develop selective biomarkers and interventions. By using a mutant α-synuclein selective-overexpression mouse model of prodromal PD, we identified a cell-autonomous selective Kv4 channelopathy in dorsal motor nucleus of the vagus (DMV) neurons. This functional remodeling of intact DMV neurons leads to impaired pacemaker function in vitro and in vivo, which, in turn, reduces gastrointestinal motility, a common early symptom of prodromal PD. We identify a chain of events from α-synuclein via a biophysical dysfunction of a specific neuronal population to a clinically relevant prodromal symptom. These findings will facilitate the rational design of clinical biomarkers to identify people at risk for developing PD.
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Affiliation(s)
- Wei-Hua Chiu
- Department of Medical Neurobiology, Institute of Medical Research Israel-Canada, The Faculty of Medicine, The Hebrew University of Jerusalem, 9112102 Jerusalem, Israel
| | - Lora Kovacheva
- Institute of Neurophysiology, Neuroscience Center, Goethe University, 60590 Frankfurt, Germany
| | - Ruth E Musgrove
- Department of Medical Neurobiology, Institute of Medical Research Israel-Canada, The Faculty of Medicine, The Hebrew University of Jerusalem, 9112102 Jerusalem, Israel
| | - Hadar Arien-Zakay
- School of Pharmacy, Institute for Drug Research, The Faculty of Medicine, The Hebrew University of Jerusalem, 9112102 Jerusalem, Israel
| | - James B Koprich
- Krembil Research Institute, Toronto Western Hospital, University Health Network, Toronto, ON M5T 2S8, Canada
- Atuka Inc., Toronto, ON M5X 1C9, Canada
| | - Jonathan M Brotchie
- Krembil Research Institute, Toronto Western Hospital, University Health Network, Toronto, ON M5T 2S8, Canada
- Atuka Inc., Toronto, ON M5X 1C9, Canada
| | - Rami Yaka
- School of Pharmacy, Institute for Drug Research, The Faculty of Medicine, The Hebrew University of Jerusalem, 9112102 Jerusalem, Israel
| | - Danny Ben-Zvi
- Department of Developmental Biology and Cancer Research, Institute of Medical Research Israel-Canada, The Faculty of Medicine, The Hebrew University of Jerusalem, 9112102 Jerusalem, Israel
| | - Menachem Hanani
- Department of Medical Neurobiology, Institute of Medical Research Israel-Canada, The Faculty of Medicine, The Hebrew University of Jerusalem, 9112102 Jerusalem, Israel
- Laboratory of Experimental Surgery, Hadassah Medical Center, Mount Scopus, 91240 Jerusalem, Israel
| | - Jochen Roeper
- Institute of Neurophysiology, Neuroscience Center, Goethe University, 60590 Frankfurt, Germany
| | - Joshua A Goldberg
- Department of Medical Neurobiology, Institute of Medical Research Israel-Canada, The Faculty of Medicine, The Hebrew University of Jerusalem, 9112102 Jerusalem, Israel.
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20
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Costa KM, Schenkel D, Roeper J. Sex-dependent alterations in behavior, drug responses and dopamine transporter expression in heterozygous DAT-Cre mice. Sci Rep 2021; 11:3334. [PMID: 33558587 PMCID: PMC7870653 DOI: 10.1038/s41598-021-82600-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 01/19/2021] [Indexed: 01/30/2023] Open
Abstract
Heterozygous mice that express Cre-recombinase under the dopamine transporter promoter (DAT-Cre knock in mice, or KI) are widely used for targeting midbrain dopamine neurons, under the assumption that their constitutive physiology is not affected. We report here that these mice display striking sex-dependent behavioral and molecular differences in relation to wildtypes (WT). Male and female KI mice were constitutively hyperactive, and male KI mice showed attenuated hyperlocomotor responses to amphetamine. In contrast, female KIs displayed a marked reduction in locomotion ("calming" effect) in response to the same dose of amphetamine. Furthermore, male and female DAT-Cre KI mice showed opposing differences in reinforcement learning, with females showing faster conditioning and males showing slower extinction. Other behavioral variables, including working memory and novelty preference, were not changed compared to WT. These effects were paralleled by differences in striatal DAT expression that disproportionately affected female KI mice. Our findings reveal clear limitations of the DAT-Cre line that must be considered when using this model.
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Affiliation(s)
- Kauê Machado Costa
- grid.7839.50000 0004 1936 9721Institute of Neurophysiology, Goethe-University Frankfurt, Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany ,grid.94365.3d0000 0001 2297 5165Present Address: National Institute on Drug Abuse Intramural Research Program, National Institutes of Health, 251 Bayview Blvd, Baltimore, MD 21224 USA
| | - Daniela Schenkel
- grid.7839.50000 0004 1936 9721Institute of Neurophysiology, Goethe-University Frankfurt, Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany
| | - Jochen Roeper
- grid.7839.50000 0004 1936 9721Institute of Neurophysiology, Goethe-University Frankfurt, Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany
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21
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Schmidt S, Zlatkin-Troitschanskaia O, Roeper J, Klose V, Weber M, Bültmann AK, Brückner S. Undergraduate Students' Critical Online Reasoning-Process Mining Analysis. Front Psychol 2020; 11:576273. [PMID: 33424686 PMCID: PMC7793971 DOI: 10.3389/fpsyg.2020.576273] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 11/02/2020] [Indexed: 12/16/2022] Open
Abstract
To successfully learn using open Internet resources, students must be able to critically search, evaluate and select online information, and verify sources. Defined as critical online reasoning (COR), this construct is operationalized on two levels in our study: (1) the student level using the newly developed Critical Online Reasoning Assessment (CORA), and (2) the online information processing level using event log data, including gaze durations and fixations. The written responses of 32 students for one CORA task were scored by three independent raters. The resulting score was operationalized as "task performance," whereas the gaze fixations and durations were defined as indicators of "process performance." Following a person-oriented approach, we conducted a process mining (PM) analysis, as well as a latent class analysis (LCA) to test whether-following the dual-process theory-the undergraduates could be distinguished into two groups based on both their process and task performance. Using PM, the process performance of all 32 students was visualized and compared, indicating two distinct response process patterns. One group of students (11), defined as "strategic information processers," processed online information more comprehensively, as well as more efficiently, which was also reflected in their higher task scores. In contrast, the distributions of the process performance variables for the other group (21), defined as "avoidance information processers," indicated a poorer process performance, which was also reflected in their lower task scores. In the LCA, where two student groups were empirically distinguished by combining the process performance indicators and the task score as a joint discriminant criterion, we confirmed these two COR profiles, which were reflected in high vs. low process and task performances. The estimated parameters indicated that high-performing students were significantly more efficient at conducting strategic information processing, as reflected in their higher process performance. These findings are so far based on quantitative analyses using event log data. To enable a more differentiated analysis of students' visual attention dynamics, more in-depth qualitative research of the identified student profiles in terms of COR will be required.
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Affiliation(s)
- Susanne Schmidt
- Department of Business and Economics Education, Johannes Gutenberg University, Mainz, Germany
| | | | - Jochen Roeper
- Department of Neurophysiology, University Hospital of the Goethe University, Frankfurt, Germany
| | - Verena Klose
- Department of Neurophysiology, University Hospital of the Goethe University, Frankfurt, Germany
| | - Maruschka Weber
- Department of Neurophysiology, University Hospital of the Goethe University, Frankfurt, Germany
| | - Ann-Kathrin Bültmann
- Department of Business and Economics Education, Johannes Gutenberg University, Mainz, Germany
| | - Sebastian Brückner
- Department of Business and Economics Education, Johannes Gutenberg University, Mainz, Germany
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22
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Christopoulos P, Kirchner M, Roeper J, Saalfeld F, Janning M, Bozorgmehr F, Magios N, Kazdal D, Volckmar AL, Brückner LM, Bochtler T, Kriegsmann M, Endris V, Penzel R, Kriegsmann K, Eichhorn M, Herth FJF, Heussel CP, El Shafie RA, Schneider MA, Muley T, Meister M, Faehling M, Fischer JR, Heukamp L, Schirmacher P, Bischoff H, Wermke M, Loges S, Griesinger F, Stenzinger A, Thomas M. Risk stratification of EGFR + lung cancer diagnosed with panel-based next-generation sequencing. Lung Cancer 2020; 148:105-112. [PMID: 32871455 DOI: 10.1016/j.lungcan.2020.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [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: 05/25/2020] [Revised: 07/24/2020] [Accepted: 08/04/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Panel-based next-generation sequencing (NGS) is increasingly used for the diagnosis of EGFR-mutated non-small-cell lung cancer (NSCLC) and could improve risk assessment in combination with clinical parameters. MATERIALS AND METHODS To this end, we retrospectively analyzed the outcome of 400 tyrosine kinase inhibitor (TKI)-treated EGFR+ NSCLC patients with validation of results in an independent cohort (n = 130). RESULTS EGFR alterations other than exon 19 deletions (non-del19), TP53 co-mutations, and brain metastases at baseline showed independent associations of similar strengths with progression-free (PFS hazard ratios [HR] 2.1-2.3) and overall survival (OS HR 1.7-2.2), in combination defining patient subgroups with distinct outcome (EGFR+NSCLC risk Score, "ENS", p < 0.001). Co-mutations beyond TP53 were rarely detected by our multigene panel (<5%) and not associated with clinical endpoints. Smoking did not affect outcome independently, but was associated with non-del19 EGFR mutations (p < 0.05) and comorbidities (p < 0.001). Laboratory parameters, like the blood lymphocyte-to-neutrophil ratio and serum LDH, correlated with the metastatic pattern (p < 0.01), but had no independent prognostic value. Reduced ECOG performance status (PS) was associated with comorbidities (p < 0.05) and shorter OS (p < 0.05), but preserved TKI efficacy. Non-adenocarcinoma histology was also associated with shorter OS (p < 0.05), but rare (2-3 %). The ECOG PS and non-adenocarcinoma histology could not be validated in our independent cohort, and did not increase the range of prognostication alongside the ENS. CONCLUSIONS EGFR variant, TP53 status and brain metastases predict TKI efficacy and survival in EGFR+ NSCLC irrespective of other currently available parameters ("ENS"). Together, they constitute a practical and reproducible approach for risk stratification of newly diagnosed metastatic EGFR+ NSCLC.
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Affiliation(s)
- P Christopoulos
- Department of Thoracic Oncology, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - M Kirchner
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
| | - J Roeper
- Department of Hematology and Oncology, Pius-Hospital, University Dept. of Internal Medicine - Oncology, Oldenburg, Germany
| | - F Saalfeld
- Department of Thoracic Oncology, Carl-Gustav-Carus Dresden University Hospital, Dresden, Germany
| | - M Janning
- Department of Oncology, Hematology and Bone Marrow Transplantation with section Pneumology, Hubertus Wald Comprehensive Cancer Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Division of Personalized Medical Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Personalized Oncology, University Hospital Mannheim, Mannheim, Germany
| | - F Bozorgmehr
- Department of Thoracic Oncology, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - N Magios
- Department of Thoracic Oncology, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany
| | - D Kazdal
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - A L Volckmar
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
| | - L M Brückner
- Department of Thoracic Oncology, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany
| | - T Bochtler
- Department of Thoracic Oncology, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany
| | - M Kriegsmann
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - V Endris
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
| | - R Penzel
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
| | - K Kriegsmann
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
| | - M Eichhorn
- Department of Thoracic Surgery, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - F J F Herth
- Department of Pulmonology, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - C P Heussel
- Diagnostic and Interventional Radiology With Nuclear Medicine, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - R A El Shafie
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - M A Schneider
- Translational Research Unit, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - T Muley
- Translational Research Unit, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - M Meister
- Translational Research Unit, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - M Faehling
- Department of Pneumology, Esslingen Hospital, Esslingen, Germany
| | - J R Fischer
- Department of Thoracic Oncology, Lungenklinik Loewenstein, Loewenstein, Germany
| | - L Heukamp
- Institut Für Hämatopathologie Hamburg, Hamburg, Germany
| | - P Schirmacher
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
| | - H Bischoff
- Department of Thoracic Oncology, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany
| | - M Wermke
- Department of Thoracic Oncology, Carl-Gustav-Carus Dresden University Hospital, Dresden, Germany
| | - S Loges
- Department of Oncology, Hematology and Bone Marrow Transplantation with section Pneumology, Hubertus Wald Comprehensive Cancer Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Division of Personalized Medical Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Personalized Oncology, University Hospital Mannheim, Mannheim, Germany
| | - F Griesinger
- Department of Hematology and Oncology, Pius-Hospital, University Dept. of Internal Medicine - Oncology, Oldenburg, Germany
| | - A Stenzinger
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany.
| | - M Thomas
- Department of Thoracic Oncology, Thoraxklinik at Heidelberg University Hospital, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany.
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23
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Rajan R, Divya KP, Kandadai RM, Yadav R, Satagopam VP, Madhusoodanan UK, Agarwal P, Kumar N, Ferreira T, Kumar H, Sreeram Prasad AV, Shetty K, Mehta S, Desai S, Kumar S, Prashanth LK, Bhatt M, Wadia P, Ramalingam S, Wali GM, Pandey S, Bartusch F, Hannussek M, Krüger J, Kumar-Sreelatha A, Grover S, Lichtner P, Sturm M, Roeper J, Busskamp V, Chandak GR, Schwamborn J, Seth P, Gasser T, Riess O, Goyal V, Pal PK, Borgohain R, Krüger R, Kishore A, Sharma M. Genetic Architecture of Parkinson's Disease in the Indian Population: Harnessing Genetic Diversity to Address Critical Gaps in Parkinson's Disease Research. Front Neurol 2020; 11:524. [PMID: 32655481 PMCID: PMC7323575 DOI: 10.3389/fneur.2020.00524] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 05/13/2020] [Indexed: 12/21/2022] Open
Abstract
Over the past two decades, our understanding of Parkinson's disease (PD) has been gleaned from the discoveries made in familial and/or sporadic forms of PD in the Caucasian population. The transferability and the clinical utility of genetic discoveries to other ethnically diverse populations are unknown. The Indian population has been under-represented in PD research. The Genetic Architecture of PD in India (GAP-India) project aims to develop one of the largest clinical/genomic bio-bank for PD in India. Specifically, GAP-India project aims to: (1) develop a pan-Indian deeply phenotyped clinical repository of Indian PD patients; (2) perform whole-genome sequencing in 500 PD samples to catalog Indian genetic variability and to develop an Indian PD map for the scientific community; (3) perform a genome-wide association study to identify novel loci for PD and (4) develop a user-friendly web-portal to disseminate results for the scientific community. Our "hub-spoke" model follows an integrative approach to develop a pan-Indian outreach to develop a comprehensive cohort for PD research in India. The alignment of standard operating procedures for recruiting patients and collecting biospecimens with international standards ensures harmonization of data/bio-specimen collection at the beginning and also ensures stringent quality control parameters for sample processing. Data sharing and protection policies follow the guidelines established by local and national authorities.We are currently in the recruitment phase targeting recruitment of 10,200 PD patients and 10,200 healthy volunteers by the end of 2020. GAP-India project after its completion will fill a critical gap that exists in PD research and will contribute a comprehensive genetic catalog of the Indian PD population to identify novel targets for PD.
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Affiliation(s)
- Roopa Rajan
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - K P Divya
- Sree Chitra Tirunal Institute for Medical Sciences, Trivandrum, India
| | | | - Ravi Yadav
- National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, India
| | - Venkata P Satagopam
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Luxembourg, Luxembourg.,ELIXIR-Luxembourg Node, Belvaux, Luxembourg
| | - U K Madhusoodanan
- Sree Chitra Tirunal Institute for Medical Sciences, Trivandrum, India
| | - Pankaj Agarwal
- Movement Disorders Clinic, Global Hospitals, Mumbai, India
| | - Niraj Kumar
- All India Institute of Medical Sciences, Rishikesh, India
| | | | | | | | - Kuldeep Shetty
- Narayana Hrudayalaya Multispeciality Hospital, Bangalore, India
| | - Sahil Mehta
- Department of Neurology, PGIMER, Chandigarh, India
| | - Soaham Desai
- Shree Krishna Hospital and Pramukhswami Medical College, Karamsad, India
| | - Suresh Kumar
- Department of Neurology, Vijaya Health Centre, Chennai, India
| | - L K Prashanth
- Center for Parkinson's Disease and Movement Disorders, Vikram Hospital, Bangalore, India
| | - Mohit Bhatt
- Kokilaben Dhirubhai Ambani Hospital, Mumbai, India
| | | | - Sudha Ramalingam
- Department of Community Medicine, PSG Institute of Medical Sciences and Research, Coimbatore, India
| | - G M Wali
- Neurospecialities Centre, Belgaum, India
| | - Sanjay Pandey
- Department of Neurology, G. B. Pant Institute of Medical Education and Research, New Delhi, India
| | - Felix Bartusch
- Zentrum für Datenverarbeitung (ZDV), University of Tubingen, Tübingen, Germany
| | | | - Jens Krüger
- Zentrum für Datenverarbeitung (ZDV), University of Tubingen, Tübingen, Germany
| | - Ashwin Kumar-Sreelatha
- Centre for Genetic Epidemiology, Institute for Clinical Epidemiology and Applied Biometry, University of Tubingen, Tübingen, Germany
| | - Sandeep Grover
- Centre for Genetic Epidemiology, Institute for Clinical Epidemiology and Applied Biometry, University of Tubingen, Tübingen, Germany
| | - Peter Lichtner
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Human Genetics, Neuherberg, Germany
| | - Marc Sturm
- Institute for Medical Genetics and Applied Genomics, University of Tubingen, Tübingen, Germany
| | - Jochen Roeper
- Institute of Neurophysiology, Goethe University Frankfurt, Frankfurt, Germany
| | - Volker Busskamp
- Department of Ophthalmology, Universitäts-Augenklinik Bonn, University of Bonn, Bonn, Germany
| | | | - Jens Schwamborn
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Luxembourg, Luxembourg
| | - Pankaj Seth
- National Brain Research Centre, Gurugram, India
| | - Thomas Gasser
- Department of Neurodegenerative Diseases, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany
| | - Olaf Riess
- Institute for Medical Genetics and Applied Genomics, University of Tubingen, Tübingen, Germany
| | - Vinay Goyal
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India.,Medanta the Medicity, Gurgaon, India
| | - Pramod Kumar Pal
- National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, India
| | - Rupam Borgohain
- Department of Neurology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - Rejko Krüger
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Luxembourg, Luxembourg.,Transversal Translational Medicine, Luxembourg Institute of Health (LIH), Strassen, Luxembourg
| | - Asha Kishore
- Sree Chitra Tirunal Institute for Medical Sciences, Trivandrum, India
| | - Manu Sharma
- Department of Neurology, G. B. Pant Institute of Medical Education and Research, New Delhi, India
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24
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Kur IM, Prouvot PH, Fu T, Fan W, Müller-Braun F, Das A, Das S, Deller T, Roeper J, Stroh A, Momma S. Neuronal activity triggers uptake of hematopoietic extracellular vesicles in vivo. PLoS Biol 2020; 18:e3000643. [PMID: 32176686 PMCID: PMC7075544 DOI: 10.1371/journal.pbio.3000643] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 02/14/2020] [Indexed: 01/01/2023] Open
Abstract
Communication with the hematopoietic system is a vital component of regulating brain function in health and disease. Traditionally, the major routes considered for this neuroimmune communication are by individual molecules such as cytokines carried by blood, by neural transmission, or, in more severe pathologies, by the entry of peripheral immune cells into the brain. In addition, functional mRNA from peripheral blood can be directly transferred to neurons via extracellular vesicles (EVs), but the parameters that determine their uptake are unknown. Using varied animal models that stimulate neuronal activity by peripheral inflammation, optogenetics, and selective proteasome inhibition of dopaminergic (DA) neurons, we show that the transfer of EVs from blood is triggered by neuronal activity in vivo. Importantly, this transfer occurs not only in pathological stimulation but also by neuronal activation caused by the physiological stimulus of novel object placement. This discovery suggests a continuous role of EVs under pathological conditions as well as during routine cognitive tasks in the healthy brain.
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Affiliation(s)
- Ivan-Maximiliano Kur
- Institute of Neurology (Edinger Institute), University Hospital, Goethe University, Frankfurt am Main, Germany
| | - Pierre-Hugues Prouvot
- Institute of Pathophysiology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
- Leibniz Institute for Resilience Research, Mainz, Germany
| | - Ting Fu
- Institute of Pathophysiology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Wei Fan
- Leibniz Institute for Resilience Research, Mainz, Germany
| | - Felicia Müller-Braun
- Institute of Neurophysiology, Neuroscience Center, Goethe University, Frankfurt am Main, Germany
| | - Avash Das
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Saumya Das
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Thomas Deller
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe University, Frankfurt am Main, Germany
| | - Jochen Roeper
- Institute of Neurophysiology, Neuroscience Center, Goethe University, Frankfurt am Main, Germany
| | - Albrecht Stroh
- Institute of Pathophysiology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
- Leibniz Institute for Resilience Research, Mainz, Germany
| | - Stefan Momma
- Institute of Neurology (Edinger Institute), University Hospital, Goethe University, Frankfurt am Main, Germany
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25
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Wagner-Altendorf TA, Fischer B, Roeper J. Axonal projection-specific differences in somatodendritic α2 autoreceptor function in locus coeruleus neurons. Eur J Neurosci 2019; 50:3772-3785. [PMID: 31430399 DOI: 10.1111/ejn.14553] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 03/24/2019] [Revised: 07/12/2019] [Accepted: 08/12/2019] [Indexed: 01/03/2023]
Abstract
The locus coeruleus (LC) contains the majority of central noradrenergic neurons sending wide projections throughout the entire CNS. The LC is considered to be essential for multiple key brain functions including arousal, attention and adaptive stress responses as well as higher cognitive functions and memory. Electrophysiological studies of LC neurons have identified several characteristic functional features such as low-frequency pacemaker activity with broad action potentials, transient high-frequency burst discharges in response to salient stimuli and an apparently homogeneous inhibition of firing by activation of somatodendritic α2 autoreceptors (α2AR). While stress-mediated plasticity of the α2AR response has been described, it is currently unclear whether different LC neurons projecting to distinct axonal targets display differences in α2AR function. Using fluorescent beads-mediated retrograde tracing in adult C57Bl6/N mice, we compared the anatomical distributions and functional in vitro properties of identified LC neurons projecting either to medial prefrontal cortex, hippocampus or cerebellum. The functional in vitro analysis of LC neurons confirmed their mostly uniform functional properties regarding action potential generation and pacemaker firing. However, we identified significant differences in tonic and evoked α2AR-mediated responses. While hippocampal-projecting LC neurons were partially inhibited by endogenous levels of norepinephrine and almost completely silenced by application of saturating concentrations of the α2 agonist clonidine, prefrontal-projecting LC neurons were not affected by endogenous levels of norepinephrine and only partially inhibited by saturating concentrations of clonidine. Thus, we identified a limited α2AR control of electrical activity for prefrontal-projecting LC neurons indicative of functional heterogeneity in the LC-noradrenergic system.
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Affiliation(s)
- Tobias A Wagner-Altendorf
- Institute of Neurophysiology, Neuroscience Center, Goethe-University Frankfurt, Frankfurt, Germany.,Department of Neurology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Beatrice Fischer
- Institute of Neurophysiology, Neuroscience Center, Goethe-University Frankfurt, Frankfurt, Germany
| | - Jochen Roeper
- Institute of Neurophysiology, Neuroscience Center, Goethe-University Frankfurt, Frankfurt, Germany
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Farassat N, Costa KM, Stojanovic S, Albert S, Kovacheva L, Shin J, Egger R, Somayaji M, Duvarci S, Schneider G, Roeper J. In vivo functional diversity of midbrain dopamine neurons within identified axonal projections. eLife 2019; 8:48408. [PMID: 31580257 PMCID: PMC6791716 DOI: 10.7554/elife.48408] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 10/02/2019] [Indexed: 12/03/2022] Open
Abstract
Functional diversity of midbrain dopamine (DA) neurons ranges across multiple scales, from differences in intrinsic properties and connectivity to selective task engagement in behaving animals. Distinct in vitro biophysical features of DA neurons have been associated with different axonal projection targets. However, it is unknown how this translates to different firing patterns of projection-defined DA subpopulations in the intact brain. We combined retrograde tracing with single-unit recording and labelling in mouse brain to create an in vivo functional topography of the midbrain DA system. We identified differences in burst firing among DA neurons projecting to dorsolateral striatum. Bursting also differentiated DA neurons in the medial substantia nigra (SN) projecting either to dorsal or ventral striatum. We found differences in mean firing rates and pause durations among ventral tegmental area (VTA) DA neurons projecting to lateral or medial shell of nucleus accumbens. Our data establishes a high-resolution functional in vivo landscape of midbrain DA neurons.
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Affiliation(s)
- Navid Farassat
- Institute for Neurophysiology, Goethe University, Frankfurt, Germany
| | | | | | - Stefan Albert
- Institute for Mathematics, Goethe University, Frankfurt, Germany
| | - Lora Kovacheva
- Institute for Neurophysiology, Goethe University, Frankfurt, Germany
| | - Josef Shin
- Institute for Neurophysiology, Goethe University, Frankfurt, Germany
| | - Richard Egger
- Institute for Neurophysiology, Goethe University, Frankfurt, Germany
| | | | - Sevil Duvarci
- Institute for Neurophysiology, Goethe University, Frankfurt, Germany
| | - Gaby Schneider
- Institute for Mathematics, Goethe University, Frankfurt, Germany
| | - Jochen Roeper
- Institute for Neurophysiology, Goethe University, Frankfurt, Germany
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Roeper J, Falk M, Schatz S, Tiemann M, Wesseler C, Wiest G, Sackmann S, Ukena D, Griesinger F. Treatment patterns of EGFR mt+ NSCLC IV pts: Real-world data of the NOWEL network. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz260.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Shah R, Girard N, Nagar S, Griesinger F, Roeper J, Davis K, Bakker N, Thakrar B, Taylor A, Feliciano J. Real-world (RW) treatment patterns and outcomes for second-line (2L) therapy and beyond in patients (pts) with epidermal growth factor receptor-mutated (EGFRm) advanced NSCLC receiving a first-line (1L) first- or second-generation (1G/2G) EGFR tyrosine kinase inhibitor (TKI). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz260.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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29
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Roeper J, Lueers A, Falk M, Schatz S, Tiemann M, Wesseler C, Wiest G, Sackmann S, Ukena D, Heukamp L, Griesinger F. Risk of not receiving second-line therapy is high in EGFR mt+ patients: Real-world data of certified lung cancer centers on treatment sequence in EGFR mt+ patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz063.019] [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: 11/12/2022] Open
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30
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Schatz S, Falk M, Menon R, Heukamp L, Roeper J, Griesinger F, Tiemann M. Hybrid capture NGS reliably detects a spectrum of clinically significant genetic aberrations in both, primary diagnostics and the relapse scenario. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.054] [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: 11/12/2022] Open
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31
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Roeper J, Falk M, Schatz S, Tiemann M, Wesseler C, Wiest G, Sackmann S, Ukena D, Heukamp L, Griesinger F. Risk of not receiving second-line therapy is high in EGFR mt+ pts: Real world data of certified lung cancer centers on treatment sequence in EGFR mt+ pts. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.069] [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: 11/13/2022] Open
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32
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Roeper J, Falk M, Schatz S, Tiemann M, Sackmann S, Ukena D, Wesseler C, Wiest G, Heukamp L, Griesinger F. P1.01-82 Risk of Not Receiving 2nd Line Therapy is High in EGFR mt+ pts: Real World Data of Certified Lung Cancer Centers on Treatment Sequence in EGFR mt+ pts. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.638] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Roeper J, Netchaeva M, Lueers A, Falk M, Tiemann M, Wesseler C, Wiest G, Sackmann S, Ukena D, Griesinger F. 163P The influence of 2nd and 3rd generation TKI in EGFR mt+ and ALK+ patients on OS and PFS: Results of the NOWEL network. J Thorac Oncol 2018. [DOI: 10.1016/s1556-0864(18)30437-4] [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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34
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Roeper J, Netchaeva M, Lüers A, Schatz S, Falk M, Tiemann M, Neemann N, Heukamp LC, Wesseler C, Wiest GH, Sackmann S, Ukena D, Griesinger F. Impact on OS and PFS of 2nd and 3 rd Generation TKI in EGFR mt+ and ALK+ patients: Results of the NOWEL network. Pneumologie 2018. [DOI: 10.1055/s-0037-1619262] [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: 10/28/2022]
Affiliation(s)
- J Roeper
- Universitätsklinik Innere Medizin – Onkologie, Pius Hospital, Carl von Ossietzky Universität Oldenburg
| | - M Netchaeva
- Pius Hopital Oldenburg, Universität Oldenburg
| | - A Lüers
- Pius Hopital Oldenburg, Universität Oldenburg
| | - S Schatz
- Institut für Hämatopathologie Hamburg
| | - M Falk
- Molekularpathologie, Hämatopathologie Hamburg
| | - M Tiemann
- Institut für Hämatopathologie Hamburg
| | | | | | - C Wesseler
- Lungenheilkunde (Pneumologie) im Thoraxzentrum, Asklepios Klinik Harburg
| | | | - S Sackmann
- Klinik für Pneumologie und Beatmungsmedizin, Klinikum Bremen-Ost gGmbH
| | - D Ukena
- Klinik für Pneumologie und Beatmungsmedizin, Klinikum Bremen-Ost gGmbH
| | - F Griesinger
- Department of Hematology and Oncology, University Hospital, Pius-Hospital Oldenburg
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35
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Rosenow F, van Alphen N, Becker A, Chiocchetti A, Deichmann R, Deller T, Freiman T, Freitag CM, Gehrig J, Hermsen AM, Jedlicka P, Kell C, Klein KM, Knake S, Kullmann DM, Liebner S, Norwood BA, Omigie D, Plate K, Reif A, Reif PS, Reiss Y, Roeper J, Ronellenfitsch MW, Schorge S, Schratt G, Schwarzacher SW, Steinbach JP, Strzelczyk A, Triesch J, Wagner M, Walker MC, von Wegner F, Bauer S. Personalized translational epilepsy research - Novel approaches and future perspectives: Part I: Clinical and network analysis approaches. Epilepsy Behav 2017; 76:13-18. [PMID: 28917501 DOI: 10.1016/j.yebeh.2017.06.041] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 06/05/2017] [Indexed: 01/01/2023]
Abstract
Despite the availability of more than 15 new "antiepileptic drugs", the proportion of patients with pharmacoresistant epilepsy has remained constant at about 20-30%. Furthermore, no disease-modifying treatments shown to prevent the development of epilepsy following an initial precipitating brain injury or to reverse established epilepsy have been identified to date. This is likely in part due to the polyetiologic nature of epilepsy, which in turn requires personalized medicine approaches. Recent advances in imaging, pathology, genetics and epigenetics have led to new pathophysiological concepts and the identification of monogenic causes of epilepsy. In the context of these advances, the First International Symposium on Personalized Translational Epilepsy Research (1st ISymPTER) was held in Frankfurt on September 8, 2016, to discuss novel approaches and future perspectives for personalized translational research. These included new developments and ideas in a range of experimental and clinical areas such as deep phenotyping, quantitative brain imaging, EEG/MEG-based analysis of network dysfunction, tissue-based translational studies, innate immunity mechanisms, microRNA as treatment targets, functional characterization of genetic variants in human cell models and rodent organotypic slice cultures, personalized treatment approaches for monogenic epilepsies, blood-brain barrier dysfunction, therapeutic focal tissue modification, computational modeling for target and biomarker identification, and cost analysis in (monogenic) disease and its treatment. This report on the meeting proceedings is aimed at stimulating much needed investments of time and resources in personalized translational epilepsy research. Part I includes the clinical phenotyping and diagnostic methods, EEG network-analysis, biomarkers, and personalized treatment approaches. In Part II, experimental and translational approaches will be discussed (Bauer et al., 2017) [1].
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Affiliation(s)
- Felix Rosenow
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1).
| | - Natascha van Alphen
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Albert Becker
- Institute for Neuropathology, University Bonn, 53105 Bonn, Germany
| | - Andreas Chiocchetti
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Ralf Deichmann
- Brain Imaging Center (BIC) Frankfurt, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Thomas Deller
- Institute of Clinical Neuroanatomy, Dr. Senckenberg Anatomy, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Thomas Freiman
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Christine M Freitag
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Johannes Gehrig
- Emmy-Noether Group Kell, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Anke M Hermsen
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Peter Jedlicka
- Institute of Clinical Neuroanatomy, Dr. Senckenberg Anatomy, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Christian Kell
- Emmy-Noether Group Kell, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Karl Martin Klein
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Susanne Knake
- Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Dimitri M Kullmann
- Institute of Neurology, University College London (UCL), London WC1E 6BT, United Kingdom
| | - Stefan Liebner
- Edinger-Institute Frankfurt, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Braxton A Norwood
- Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany
| | - Diana Omigie
- Max-Planck-Institute for Empirical Aesthetics, 60322 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Karlheinz Plate
- Edinger-Institute Frankfurt, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Andreas Reif
- Department of Psychiatry, Psychosomatics and Psychotherapy, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Philipp S Reif
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Yvonne Reiss
- Edinger-Institute Frankfurt, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Jochen Roeper
- Institute of Neurophysiology, Neuroscience Center, Goethe-University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Michael W Ronellenfitsch
- Dr. Senckenberg Institute for Neurooncology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Stephanie Schorge
- Institute of Neurology, University College London (UCL), London WC1E 6BT, United Kingdom
| | - Gerhard Schratt
- Institute of Physiological Chemistry, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Stephan W Schwarzacher
- Institute of Clinical Neuroanatomy, Dr. Senckenberg Anatomy, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Joachim P Steinbach
- Dr. Senckenberg Institute for Neurooncology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Adam Strzelczyk
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Jochen Triesch
- Frankfurt Institute for Advanced Studies (FIAS), 60438 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Marlies Wagner
- Institute of Neuroradiology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Matthew C Walker
- Institute of Neurology, University College London (UCL), London WC1E 6BT, United Kingdom
| | - Frederic von Wegner
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Sebastian Bauer
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
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36
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Bauer S, van Alphen N, Becker A, Chiocchetti A, Deichmann R, Deller T, Freiman T, Freitag CM, Gehrig J, Hermsen AM, Jedlicka P, Kell C, Klein KM, Knake S, Kullmann DM, Liebner S, Norwood BA, Omigie D, Plate K, Reif A, Reif PS, Reiss Y, Roeper J, Ronellenfitsch MW, Schorge S, Schratt G, Schwarzacher SW, Steinbach JP, Strzelczyk A, Triesch J, Wagner M, Walker MC, von Wegner F, Rosenow F. Personalized translational epilepsy research - Novel approaches and future perspectives: Part II: Experimental and translational approaches. Epilepsy Behav 2017; 76:7-12. [PMID: 28917498 DOI: 10.1016/j.yebeh.2017.06.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 06/05/2017] [Indexed: 11/30/2022]
Abstract
Despite the availability of more than 15 new "antiepileptic drugs", the proportion of patients with pharmacoresistant epilepsy has remained constant at about 20-30%. Furthermore, no disease-modifying treatments shown to prevent the development of epilepsy following an initial precipitating brain injury or to reverse established epilepsy have been identified to date. This is likely in part due to the polyetiologic nature of epilepsy, which in turn requires personalized medicine approaches. Recent advances in imaging, pathology, genetics, and epigenetics have led to new pathophysiological concepts and the identification of monogenic causes of epilepsy. In the context of these advances, the First International Symposium on Personalized Translational Epilepsy Research (1st ISymPTER) was held in Frankfurt on September 8, 2016, to discuss novel approaches and future perspectives for personalized translational research. These included new developments and ideas in a range of experimental and clinical areas such as deep phenotyping, quantitative brain imaging, EEG/MEG-based analysis of network dysfunction, tissue-based translational studies, innate immunity mechanisms, microRNA as treatment targets, functional characterization of genetic variants in human cell models and rodent organotypic slice cultures, personalized treatment approaches for monogenic epilepsies, blood-brain barrier dysfunction, therapeutic focal tissue modification, computational modeling for target and biomarker identification, and cost analysis in (monogenic) disease and its treatment. This report on the meeting proceedings is aimed at stimulating much needed investments of time and resources in personalized translational epilepsy research. This Part II includes the experimental and translational approaches and a discussion of the future perspectives, while the diagnostic methods, EEG network analysis, biomarkers, and personalized treatment approaches were addressed in Part I [1].
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Affiliation(s)
- Sebastian Bauer
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Natascha van Alphen
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Albert Becker
- Institute for Neuropathology, University Bonn, 53105 Bonn, Germany
| | - Andreas Chiocchetti
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Ralf Deichmann
- Brain Imaging Center (BIC) Frankfurt, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Thomas Deller
- Institute of Clinical Neuroanatomy, Dr. Senckenberg Anatomy, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Thomas Freiman
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Christine M Freitag
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Johannes Gehrig
- Emmy-Noether Group Kell, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Anke M Hermsen
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Peter Jedlicka
- Institute of Clinical Neuroanatomy, Dr. Senckenberg Anatomy, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Christian Kell
- Emmy-Noether Group Kell, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Karl Martin Klein
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Susanne Knake
- Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Dimitri M Kullmann
- Institute of Neurology, University College London (UCL), London WC1E 6BT, United Kingdom
| | - Stefan Liebner
- Edinger-Institute Frankfurt, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Braxton A Norwood
- Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany
| | - Diana Omigie
- Max-Planck-Institute for Empirical Aesthetics, 60322 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Karlheinz Plate
- Edinger-Institute Frankfurt, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Andreas Reif
- Department of Psychiatry, Psychosomatics and Psychotherapy, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Philipp S Reif
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Yvonne Reiss
- Edinger-Institute Frankfurt, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Jochen Roeper
- Institute of Neurophysiology, Neuroscience Center, Goethe-University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Michael W Ronellenfitsch
- Dr. Senckenberg Institute for Neurooncology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Stephanie Schorge
- Institute of Neurology, University College London (UCL), London WC1E 6BT, United Kingdom
| | - Gerhard Schratt
- Institute of Physiological Chemistry, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Stephan W Schwarzacher
- Institute of Clinical Neuroanatomy, Dr. Senckenberg Anatomy, Neuroscience Center, Goethe University Frankfurt, 60590 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Joachim P Steinbach
- Dr. Senckenberg Institute for Neurooncology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Adam Strzelczyk
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Jochen Triesch
- Frankfurt Institute for Advanced Studies (FIAS), 60438 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Marlies Wagner
- Institute of Neuroradiology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Matthew C Walker
- Institute of Neurology, University College London (UCL), London WC1E 6BT, United Kingdom
| | - Frederic von Wegner
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1)
| | - Felix Rosenow
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Center of Neurology and Neurosurgery, Goethe University Frankfurt, 60528 Frankfurt, Germany; Epilepsy Center Marburg, Department of Neurology, Philipps-University Marburg, 35043 Marburg, Germany; Center for Personalized Translational Epilepsy Research (CePTER), 60528 Frankfurt, Germany(1).
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Knowlton C, Kutterer S, Roeper J, Canavier CC. Calcium dynamics control K-ATP channel-mediated bursting in substantia nigra dopamine neurons: a combined experimental and modeling study. J Neurophysiol 2017; 119:84-95. [PMID: 28978764 DOI: 10.1152/jn.00351.2017] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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: 02/04/2023] Open
Abstract
Burst firing in medial substantia nigra (mSN) dopamine (DA) neurons has been selectively linked to novelty-induced exploration behavior in mice. Burst firing in mSN DA neurons, in contrast to lateral SN DA neurons, requires functional ATP-sensitive potassium (K-ATP) channels both in vitro and in vivo. However, the precise role of K-ATP channels in promoting burst firing is unknown. We show experimentally that L-type calcium channel activity in mSN DA neurons enhances open probability of K-ATP channels. We then generate a mathematical model to study the role of Ca2+ dynamics driving K-ATP channel function in mSN DA neurons during bursting. In our model, Ca2+ influx leads to local accumulation of ADP due to Ca-ATPase activity, which in turn activates K-ATP channels. If K-ATP channel activation reaches levels sufficient to terminate spiking, rhythmic bursting occurs. The model explains the experimental observation that, in vitro, coapplication of NMDA and a selective K-ATP channel opener, NN414, is required to elicit bursting as follows. Simulated NMDA receptor activation increases the firing rate and the rate of Ca2+ influx, which increases the activation of K-ATP. The model suggests that additional sources of hyperpolarization, such as GABAergic synaptic input, are recruited in vivo for burst termination or rebound burst discharge. The model predicts that NN414 increases the sensitivity of the K-ATP channel to ADP, promoting burst firing in vitro, and that that high levels of Ca2+ buffering, as might be expected in the calbindin-positive SN DA neuron subpopulation, promote rhythmic bursting pattern, consistent with experimental observations in vivo. NEW & NOTEWORTHY Recently identified distinct subpopulations of midbrain dopamine neurons exhibit differences in their two primary activity patterns in vivo: tonic (single spike) firing and phasic bursting. This study elucidates the biophysical basis of bursts specific to dopamine neurons in the medial substantia nigra, enabled by ATP-sensitive K+ channels and necessary for novelty-induced exploration. A better understanding of how dopaminergic signaling differs between subpopulations may lead to therapeutic strategies selectively targeted to specific subpopulations.
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Affiliation(s)
- Christopher Knowlton
- Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center , New Orleans, Louisiana
| | - Sylvie Kutterer
- Institut für Neurophysiologie, Goethe University , Frankfurt , Germany
| | - Jochen Roeper
- Institut für Neurophysiologie, Goethe University , Frankfurt , Germany
| | - Carmen C Canavier
- Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center , New Orleans, Louisiana
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Roeper J. Closing gaps in brain disease-from overlapping genetic architecture to common motifs of synapse dysfunction. Curr Opin Neurobiol 2017; 48:45-51. [PMID: 28968515 DOI: 10.1016/j.conb.2017.09.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 09/11/2017] [Indexed: 10/18/2022]
Abstract
Recent progress in the synaptic pathophysiology of brain diseases is reviewed. To emphasize the emergence of common motifs in synapse dysfunctions across neurodevelopmental, psychiatric and neurological disorders, conventional clinical boundaries are disregarded and a decidedly trans-diagnostic, potentially unifying view of altered synapse function is promoted. Based on the overlapping genetic architecture of brain disorders, which often converges on genes related to synaptic functions, disease-related changes in basic pre-synaptic and post-synaptic communication, neuromodulation-gated changes in Hebbian plasticity, dynamic interactions between Hebbian and homeostatic plasticity, and changes in synaptic maintenance by autophagy and glial-mediated phagocytosis are highlighted.
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Affiliation(s)
- Jochen Roeper
- Institute of Neurophysiology, Goethe University, Frankfurt, Germany.
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39
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Roeper J, Lueers A, Netchaeva M, Falk M, Hallas C, Tiemann M, Neemann N, Heukamp L, Wesseler C, Wiest G, Ukena D, Sackmann S, Griesinger F. Impact on OS and PFS of 2nd and 3rd generation TKI in EGFR mt+ and ALK+ pts: Results of the NOWEL network. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx380.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Newton AJH, Seidenstein AH, McDougal RA, Pérez-Cervera A, Huguet G, M-Seara T, Haimerl C, Angulo-Garcia D, Torcini A, Cossart R, Malvache A, Skiker K, Maouene M, Ragognetti G, Lorusso L, Viggiano A, Marcelli A, Senatore R, Parziale A, Stramaglia S, Pellicoro M, Angelini L, Amico E, Aerts H, Cortés J, Laureys S, Marinazzo D, Stramaglia S, Bassez I, Faes L, Almgren H, Razi A, Van de Steen F, Krebs R, Aerts H, Kanari L, Dlotko P, Scolamiero M, Levi R, Shillcock J, de Kock CP, Hess K, Markram H, Ly C, Marsat G, Gillespie T, Sandström M, Abrams M, Grethe JS, Martone M, De Gernier R, Solinas S, Rössert C, Haelterman M, Massar S, Pasquale V, Pastore VP, Martinoia S, Massobrio P, Capone C, Tort-Colet N, Sanchez-Vives MV, Mattia M, Almasi A, Cloherty SL, Grayden DB, Wong YT, Ibbotson MR, Meffin H, Prince LY, Tsaneva-Atanasova K, Mellor JR, Mazzoni A, Rosa M, Carpaneto J, Romito LM, Priori A, Micera S, Migliore R, Lupascu CA, Franchina F, Bologna LL, Romani A, Saray S, Van Geit W, Káli S, Thomson A, Mercer A, Lange S, Falck J, Muller E, Schürmann F, Todorov D, Capps R, Barnett W, Molkov Y, Devalle F, Pazó D, Montbrió E, Mochol G, Azab H, Hayden BY, Moreno-Bote R, Balasubramani PP, Chakravarthy SV, Muddapu VR, Gheorghiu MD, Mimica B, Withlock J, Mureșan RC, Zick JL, Schultz K, Blackman RK, Chafee MV, Netoff TI, Roberts N, Nagaraj V, Lamperski A, Netoff TI, Grado LL, Johnson MD, Darrow DP, Lonardoni D, Amin H, Di Marco S, Maccione A, Berdondini L, Nieus T, Stimberg M, Goodman DFM, Nowotny T, Koren V, Dragoi V, Obermayer K, Castro S, Fernandez M, El-Deredy W, Xu K, Maidana JP, Orio P, Chen W, Hepburn I, Casalegno F, Devresse A, Ovcharenko A, Pereira F, Delalondre F, De Schutter E, Bratby P, Gallimore AR, Klingbeil G, Zamora C, Zang Y, Crotty P, Palmerduca E, Antonietti A, Casellato C, Erö C, D’Angelo E, Gewaltig MO, Pedrocchi A, Bytschok I, Dold D, Schemmel J, Meier K, Petrovici MA, Shen HA, Surace SC, Pfister JP, Lefebvre B, Marre O, Yger P, Papoutsi A, Park J, Ash R, Smirnakis S, Poirazi P, Felix RA, Dimitrov AG, Portfors C, Daun S, Toth TI, Jędrzejewska-Szmek J, Kabbani N, Blackwel KT, Moezzi B, Schaworonkow N, Plogmacher L, Goldsworthy MR, Hordacre B, McDonnell MD, Iannella N, Ridding MC, Triesch J, Maex R, Safaryan K, Steuber V, Tang R, Tang YY, Verveyko DV, Brazhe AR, Verisokin AY, Postnov DE, Günay C, Panuccio G, Giugliano M, Prinz AA, Varona P, Rabinovich MI, Denham J, Ranner T, Cohen N, Reva M, Rebola N, Kirizs T, Nusser Z, DiGregorio D, Mavritsaki E, Rentzelas P, Ukani NH, Tomkins A, Yeh CH, Bruning W, Fenichel AL, Zhou Y, Huang YC, Florescu D, Ortiz CL, Richmond P, Lo CC, Coca D, Chiang AS, Lazar AA, Moezzi B, Creaser JL, Lin C, Ashwin P, Brown JT, Ridler T, Levenstein D, Watson BO, Buzsáki G, Rinzel J, Curtu R, Nguyen A, Assadzadeh S, Robinson PA, Sanz-Leon P, Forlim CG, de Almeida LOB, Pinto RD, Rodríguez FB, Lareo Á, Forlim CG, Rodríguez FB, Montero A, Mosqueiro T, Huerta R, Rodriguez FB, Changoluisa V, Rodriguez FB, Cordeiro VL, Ceballos CC, Kamiji NL, Roque AC, Lytton WW, Knox A, Rosenthal JJC, Daun S, Popovych S, Liu L, Wang BA, Tóth TI, Grefkes C, Fink GR, Rosjat N, Perez-Trujillo A, Espinal A, Sotelo-Figueroa MA, Cruz-Aceves I, Rostro-Gonzalez H, Zapotocky M, Hoskovcová M, Kopecká J, Ulmanová O, Růžička E, Gärtner M, Duvarci S, Roeper J, Schneider G, Albert S, Schmack K, Remme M, Schreiber S, Migliore M, Lupascu CA, Bologna LL, Antonel SM, Courcol JD, Schürmann F, Çelikok SU, Navarro-López EM, Şengör NS, Elibol R, Sengor NS, Özdemir MY, Li T, Arleo A, Sheynikhovich D, Nakamura A, Shimono M, Song Y, Park S, Choi I, Jeong J, Shin HS, Sadeh S, Gleeson P, Angus Silver R, Chatzikalymniou AP, Skinner FK, Sanchez-Rodriguez LM, Sotero RC, Hertäg L, Mackwood O, Sprekeler H, Puhlmann S, Weber SN, Higgins D, Naumann LB, Weber SN, Iyer R, Mihalas S, Ticcinelli V, Stankovski T, McClintock PVE, Stefanovska A, Janjić P, Solev D, Seifert G, Kocarev L, Steinhäuser C, Salmasi M, Glasauer S, Stemmler M, Zhang D, Zhang C, Stepanyants A, Goncharenko J, Kros L, Davey N, de Zeeuw C, Hoebeek F, Sinha A, Adams R, Schmuker M, Psarrou M, Schilstra M, Torben-Nielsen B, Metzner C, Schweikard A, Mäki-Marttunen T, Zurowski B, Marinazzo D, Faes L, Stramaglia S, Jordan HOC, Stringer SM, Gajewska-Dendek E, Suffczyński P, Tam N, Zouridakis G, Pollonini L, Tang YY, Asl MM, Valizadeh A, Tass PA, Nold A, Fan W, Konrad S, Endle H, Vogt J, Tchumatchenko T, Herpich J, Tetzlaff C, Luboeinski J, Nachstedt T, Ciba M, Bahmer A, Thielemann C, Kuebler ES, Tauskela JS, Thivierge JP, Bakker R, García-Amado M, Evangelio M, Clascá F, Tiesinga P, Buckley CL, Toyoizumi T, Dubreuil AM, Monasson R, Treves A, Spalla D, Rosay S, Kleberg FI, Wong W, de Oliveira Floriano B, Matsuo T, Uchida T, Dibenedetto D, Uludağ K, Goodarzinick A, Schmidt M, Hilgetag CC, Diesmann M, van Albada SJ, Fauth M, van Rossum M, Reyes-Sánchez M, Amaducci R, Muñiz C, Varona P, Elices I, Arroyo D, Levi R, Cohen B, Chow C, Vattikuti S, Bertolotti E, Burioni R, di Volo M, Vezzani A, Menzat B, Vogels TP, Wagatsuma N, Saha S, Kapoor R, Kerr R, Wagner J, del Molino LCG, Yang GR, Mejias JF, Wang XJ, Song H, Goodliffe J, Luebke J, Weaver CM, Thomas J, Sinha N, Shaju N, Maszczyk T, Jin J, Cash SS, Dauwels J, Brandon Westover M, Karimian M, Moerel M, De Weerd P, Burwick T, Westra RL, Abeysuriya R, Hadida J, Sotiropoulos S, Jbabdi S, Woolrich M, Bensmail C, Wrobel B, Zhou X, Ji Z, Liu X, Xia Y, Wu S, Wang X, Zhang M, Wu S, Ofer N, Shefi O, Yaari G, Carnevale T, Majumdar A, Sivagnanam S, Yoshimoto K, Smirnova EY, Amakhin DV, Malkin SL, Zaitsev AV, Chizhov AV, Zaleshina M, Zaleshin A, Barranca VJ, Zhu G, Skilling QM, Maruyama D, Ognjanovski N, Aton SJ, Zochowski M, Wu J, Aton S, Rich S, Booth V, Budak M, Dura-Bernal S, Neymotin SA, Suter BA, Shepherd GMG, Felton MA, Yu AB, Boothe DL, Oie KS, Franaszczuk PJ, Shuvaev SA, Başerdem B, Zador A, Koulakov AA, López-Madrona VJ, Pereda E, Mirasso CR, Canals S, Masoli S, Rongala UB, Mazzoni A, Spanne A, Jorntell H, Oddo CM, Vartanov AV, Neklyudova AK, Kozlovskiy SA, Kiselnikov AA, Marakshina JA, Teleńczuk M, Teleńczuk B, Destexhe A, Kuokkanen PT, Kraemer A, McColgan T, Carr CE, Kempter R. 26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3. BMC Neurosci 2017. [PMCID: PMC5592441 DOI: 10.1186/s12868-017-0372-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
Schizophrenia is a chronic and devastating disease with an overall lifetime risk of 1%. While positive symptoms of schizophrenia such as hallucinations and delusions are reduced by antipsychotic medication based on the inhibition of type 2 dopaminergic receptors (D2R), negative symptoms (e.g. reduced motivation) and cognitive symptoms (e.g. impaired working memory) of schizophrenia are not effectively treated by current medication. This dichotomy might arise in part because of our limited understanding of the pathophysiology of negative and cognitive symptoms in schizophrenia. In addition to genetic approaches, chronic systemic application of NMDA inhibitors such as ketamine have been used to generate rodent models, which displayed several relevant endophenotypes related to negative and cognitive symptoms and might thus facilitate mechanistic studies into the underlying pathophysiology. In this context, previous behavioral testing identified impairments in novel object recognition memory as a key feature in chronic NMDA-inhibitor schizophrenia rodent models. Using a chronic ketamine mouse model, we have however identified are more complex behavioral phenotype including deficits in novel space and novel object exploration in combination deficits in short-term novel object recognition memory. These impairments in novelty discrimination are in line with prefrontal and hippocampal reductions in parvalbumin-expression as well as reduced expression of the early immediate gene c-fos after novel-object exploration in hippocampal areas in our model. Our results indicate that adult C57Bl6N mice chronically treated with ketamine display combined impairments in novelty exploration and recognition, which might represent both motivational (negative) and cognitive symptoms of schizophrenia.
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Affiliation(s)
- Maria Jelena Hauser
- Institute of Neurophysiology, Neuroscience Center, Goethe University Frankfurt, Germany
| | - Dirk Isbrandt
- DZNE Research Team Experimental Neurophysiology, University Hospital Cologne, Germany
| | - Jochen Roeper
- Institute of Neurophysiology, Neuroscience Center, Goethe University Frankfurt, Germany.
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Gärtner M, Duvarci S, Roeper J, Schneider G. Detecting joint pausiness in parallel spike trains. J Neurosci Methods 2017; 285:69-81. [PMID: 28495371 DOI: 10.1016/j.jneumeth.2017.05.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 05/03/2017] [Accepted: 05/05/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Transient periods with reduced neuronal discharge - called 'pauses' - have recently gained increasing attention. In dopamine neurons, pauses are considered important teaching signals, encoding negative reward prediction errors. Particularly simultaneous pauses are likely to have increased impact on information processing. COMPARISON WITH EXISTING METHODS Available methods for detecting joint pausing analyze temporal overlap of pauses across spike trains. Such techniques are threshold dependent and can fail to identify joint pauses that are easily detectable by eye, particularly in spike trains with different firing rates. NEW METHOD We introduce a new statistic called pausiness that measures the degree of synchronous pausing in spike train pairs and avoids threshold-dependent identification of specific pauses. A new graphic termed the cross-pauseogram compares the joint pausiness of two spike trains with its time shifted analogue, such that a (pausiness) peak indicates joint pausing. When assessing significance of pausiness peaks, we use a stochastic model with synchronous spikes to disentangle joint pausiness arising from synchronous spikes from additional 'joint excess pausiness' (JEP). Parameter estimates are obtained from auto- and cross-correlograms, and statistical significance is assessed by comparison to simulated cross-pauseograms. RESULTS Our new method was applied to dopamine neuron pairs recorded in the ventral tegmental area of awake behaving mice. Significant JEP was detected in about 20% of the pairs. CONCLUSION Given the neurophysiological importance of pauses and the fact that neurons integrate multiple inputs, our findings suggest that the analysis of JEP can reveal interesting aspects in the activity of simultaneously recorded neurons.
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Affiliation(s)
- Matthias Gärtner
- Institute of Mathematics, Johann Wolfgang Goethe University, 60325 Frankfurt (Main), Germany
| | - Sevil Duvarci
- Institute of Neurophysiology, Johann Wolfgang Goethe University, 60590 Frankfurt (Main), Germany
| | - Jochen Roeper
- Institute of Neurophysiology, Johann Wolfgang Goethe University, 60590 Frankfurt (Main), Germany
| | - Gaby Schneider
- Institute of Mathematics, Johann Wolfgang Goethe University, 60325 Frankfurt (Main), Germany.
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Lakis S, Mueller J, Bertrand M, Heuckmann J, Menon R, Netchaeva M, Roeper J, Heukamp L, Griesinger F. Detection of activating EGFR and KRAS mutations in a single liquid biopsy from a patient with adenocarcinoma of the lung using hybrid capture based sequencing. Pneumologie 2017. [DOI: 10.1055/s-0037-1598273] [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: 10/20/2022]
Affiliation(s)
| | | | | | | | | | | | - J Roeper
- Pius-Hospital, Universität Oldenburg
| | | | - F Griesinger
- Department of Hematology and Oncology, Pius-Hospital Oldenburg, University Hospital
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Messer M, Costa KM, Roeper J, Schneider G. Multi-scale detection of rate changes in spike trains with weak dependencies. J Comput Neurosci 2016; 42:187-201. [PMID: 28025784 DOI: 10.1007/s10827-016-0635-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 07/17/2016] [Revised: 11/23/2016] [Accepted: 12/07/2016] [Indexed: 11/28/2022]
Abstract
The statistical analysis of neuronal spike trains by models of point processes often relies on the assumption of constant process parameters. However, it is a well-known problem that the parameters of empirical spike trains can be highly variable, such as for example the firing rate. In order to test the null hypothesis of a constant rate and to estimate the change points, a Multiple Filter Test (MFT) and a corresponding algorithm (MFA) have been proposed that can be applied under the assumption of independent inter spike intervals (ISIs). As empirical spike trains often show weak dependencies in the correlation structure of ISIs, we extend the MFT here to point processes associated with short range dependencies. By specifically estimating serial dependencies in the test statistic, we show that the new MFT can be applied to a variety of empirical firing patterns, including positive and negative serial correlations as well as tonic and bursty firing. The new MFT is applied to a data set of empirical spike trains with serial correlations, and simulations show improved performance against methods that assume independence. In case of positive correlations, our new MFT is necessary to reduce the number of false positives, which can be highly enhanced when falsely assuming independence. For the frequent case of negative correlations, the new MFT shows an improved detection probability of change points and thus, also a higher potential of signal extraction from noisy spike trains.
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Affiliation(s)
- Michael Messer
- Institute of Mathematics, Johann Wolfgang Goethe University Frankfurt, Frankfurt, Germany
| | - Kauê M Costa
- Institute of Neurophysiology, Johann Wolfgang Goethe University Frankfurt, Frankfurt, Germany
| | - Jochen Roeper
- Institute of Neurophysiology, Johann Wolfgang Goethe University Frankfurt, Frankfurt, Germany
| | - Gaby Schneider
- Institute of Mathematics, Johann Wolfgang Goethe University Frankfurt, Frankfurt, Germany.
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Griesinger F, Netchaeva M, Lüers A, Prenzel R, Scriba D, Willborn K, Stropiep U, Hallas C, Falk M, Tiemann M, Neemann N, Heukamp L, Roeper J. P53 non-disruptive mutation is a negative predictive factor in EGFR M+ NSCLC treated with TKI. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw383.32] [Citation(s) in RCA: 2] [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: 11/13/2022] Open
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Gärtner M, Duvarci S, Roeper J, Schneider G. Joint pausiness in parallel spike trains. BMC Neurosci 2015. [PMCID: PMC4698996 DOI: 10.1186/1471-2202-16-s1-p218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Dominguez-Bautista JA, Klinkenberg M, Brehm N, Subramaniam M, Kern B, Roeper J, Auburger G, Jendrach M. Loss of lysosome-associated membrane protein 3 (LAMP3) enhances cellular vulnerability against proteasomal inhibition. Eur J Cell Biol 2015; 94:148-61. [PMID: 25681212 DOI: 10.1016/j.ejcb.2015.01.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 12/26/2014] [Accepted: 01/15/2015] [Indexed: 01/07/2023] Open
Abstract
The family of lysosome-associated membrane proteins (LAMP) includes the ubiquitously expressed LAMP1 and LAMP2, which account for half of the proteins in the lysosomal membrane. Another member of the LAMP family is LAMP3, which is expressed only in certain cell types and differentiation stages. LAMP3 expression is linked with poor prognosis of certain cancers, and the locus where it is encoded was identified as a risk factor for Parkinson's disease (PD). Here, we investigated the role of LAMP3 in the two main cellular degradation pathways, the proteasome and autophagy. LAMP3 mRNA was not detected in mouse models of PD or in the brain of human patients. However, it was strongly induced upon proteasomal inhibition in the neuroblastoma cell line SH-SY5Y. Induction of LAMP3 mRNA following proteasomal inhibition was dependent on UPR transcription factor ATF4 signaling and induced autophagic flux. Prevention of LAMP3 induction enhanced apoptotic cell death. In summary, these data demonstrate that LAMP3 regulation as part of the UPR contributes to protein degradation and cell survival during proteasomal dysfunction. This link between autophagy and the proteasome may be of special importance for the treatment of tumor cells with proteasomal inhibitors.
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Affiliation(s)
| | - Michael Klinkenberg
- Experimental Neurology, Department of Neurology, Goethe University Medical School, Frankfurt am Main, Germany
| | - Nadine Brehm
- Experimental Neurology, Department of Neurology, Goethe University Medical School, Frankfurt am Main, Germany
| | | | - Beatrice Kern
- Institute of Neurophysiology, Goethe University Medical School, Frankfurt am Main, Germany
| | - Jochen Roeper
- Institute of Neurophysiology, Goethe University Medical School, Frankfurt am Main, Germany
| | - Georg Auburger
- Experimental Neurology, Department of Neurology, Goethe University Medical School, Frankfurt am Main, Germany
| | - Marina Jendrach
- Experimental Neurology, Department of Neurology, Goethe University Medical School, Frankfurt am Main, Germany.
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Messer M, Kirchner M, Schiemann J, Roeper J, Neininger R, Schneider G. A multiple filter test for the detection of rate changes in renewal processes with varying variance. Ann Appl Stat 2014. [DOI: 10.1214/14-aoas782] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Paladini C, Roeper J. Generating bursts (and pauses) in the dopamine midbrain neurons. Neuroscience 2014; 282:109-21. [DOI: 10.1016/j.neuroscience.2014.07.032] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 07/18/2014] [Accepted: 07/21/2014] [Indexed: 01/01/2023]
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Gispert S, Brehm N, Weil J, Seidel K, Rüb U, Kern B, Walter M, Roeper J, Auburger G. Potentiation of neurotoxicity in double-mutant mice with Pink1 ablation and A53T-SNCA overexpression. Hum Mol Genet 2014; 24:1061-76. [PMID: 25296918 PMCID: PMC4986551 DOI: 10.1093/hmg/ddu520] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The common age-related neurodegeneration of Parkinson's disease can result from dominant causes like increased dosage of vesicle-associated alpha-synuclein (SNCA) or recessive causes like deficiency of mitophagy factor PINK1. Interactions between these triggers and their convergence onto shared pathways are crucial, but currently conflicting evidence exists. Here, we crossed previously characterized mice with A53T-SNCA overexpression and with Pink1 deletion to generate double mutants (DMs). We studied their lifespan and behavior, histological and molecular anomalies at late and early ages. DM animals showed potentiated phenotypes in comparison with both single mutants (SMs), with reduced survival and strongly reduced spontaneous movements from the age of 3 months onwards. In contrast to SMs, a quarter of DM animals manifested progressive paralysis at ages >1 year and exhibited protein aggregates immunopositive for pSer129-SNCA, p62 and ubiquitin in spinal cord and basal brain. Brain proteome quantifications of ubiquitination sites documented altered degradation of SNCA and the DNA-damage marker H2AX at the age of 18 months. Global brain transcriptome profiles and qPCR validation experiments identified many consistent transcriptional dysregulations already at the age of 6 weeks, which were absent from SMs. The observed downregulations for Dapk1, Dcaf17, Rab42 and the novel SNCA-marker Lect1 as well as the upregulations for Dctn5, Mrpl9, Tmem181a, Xaf1 and H2afx reflect changes in ubiquitination, mitochondrial/synaptic/microtubular/cell adhesion dynamics and DNA damage. Thus, our study confirmed that SNCA-triggered neurotoxicity is exacerbated by the absence of PINK1 and identified a novel molecular signature that is detectable early in the course of this double pathology.
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Affiliation(s)
- Suzana Gispert
- Experimental Neurology, Department of Neurology, Goethe University Medical School, Building 89, 3rd floor, Theodor Stern Kai 7, 60590 Frankfurt am Main, Germany
| | - Nadine Brehm
- Experimental Neurology, Department of Neurology, Goethe University Medical School, Building 89, 3rd floor, Theodor Stern Kai 7, 60590 Frankfurt am Main, Germany
| | - Jonas Weil
- Experimental Neurology, Department of Neurology, Goethe University Medical School, Building 89, 3rd floor, Theodor Stern Kai 7, 60590 Frankfurt am Main, Germany
| | - Kay Seidel
- Dr. Senckenbergisches Chronomedizinisches Institut, Goethe-University Medical School, 60590 Frankfurt/Main, Germany
| | - Udo Rüb
- Dr. Senckenbergisches Chronomedizinisches Institut, Goethe-University Medical School, 60590 Frankfurt/Main, Germany
| | - Beatrice Kern
- Institute of Neurophysiology, Neuroscience Center, Goethe University Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt am Main, Germany and
| | - Michael Walter
- Institute for Medical Genetics, Eberhard-Karls-University of Tuebingen, 72076 Tübingen, Germany
| | - Jochen Roeper
- Institute of Neurophysiology, Neuroscience Center, Goethe University Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt am Main, Germany and
| | - Georg Auburger
- Experimental Neurology, Department of Neurology, Goethe University Medical School, Building 89, 3rd floor, Theodor Stern Kai 7, 60590 Frankfurt am Main, Germany,
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