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Rozov S, Saarreharju R, Khirug S, Storvik M, Rivera C, Rantamäki T. Effects of nitrous oxide and ketamine on electrophysiological and molecular responses in the prefrontal cortex of mice: A comparative study. Eur J Pharmacol 2024; 968:176426. [PMID: 38387719 DOI: 10.1016/j.ejphar.2024.176426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/02/2024] [Accepted: 02/14/2024] [Indexed: 02/24/2024]
Abstract
Nitrous oxide (N2O; laughing gas) has recently reported to produce rapid antidepressant effects, but little is known about the underlying mechanisms. We performed transcriptomics, in situ hybridization, and electrophysiological studies to examine the potential shared signatures induced by 1 h inhalation of 50% N2O and a single subanesthetic dose of ketamine (10 mg/kg, i.p.) in the medial prefrontal cortex (mPFC) in adult mice. Both treatments similarly affected the transcription of several negative regulators of mitogen-activated protein kinases (MAPKs), namely, dual specificity phosphatases (DUSPs). The effects were primarily located in the pyramidal cells. Notably, the overall effects of N2O on mRNA expression were much more prominent and widespread compared to ketamine. Ketamine caused an elevation of the spiking frequency of putative pyramidal neurons and increased gamma activity (30-100 Hz) of cortical local field potentials. However, N2O produced no such effects. Spiking amplitudes and spike-to-local field potential phase locking of putative pyramidal neurons and interneurons in this brain area showed no uniform changes across treatments. Our findings suggest that N2O and subanesthetic-dose ketamine target MAPK pathway in the mPFC but produce varying acute electrophysiological responses.
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Affiliation(s)
- Stanislav Rozov
- Laboratory of Neurotherapeutics, Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland; SleepWell Research Program, Faculty of Medicine, University of Helsinki, Helsinki, 00014, Finland.
| | - Roosa Saarreharju
- Laboratory of Neurotherapeutics, Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland; SleepWell Research Program, Faculty of Medicine, University of Helsinki, Helsinki, 00014, Finland
| | - Stanislav Khirug
- Neuroscience Center, University of Helsinki, Helsinki, 00014, Finland
| | | | - Claudio Rivera
- Neuroscience Center, University of Helsinki, Helsinki, 00014, Finland; Aix Marseille Univ, INSERM, INMED, Marseille, 13007, France
| | - Tomi Rantamäki
- Laboratory of Neurotherapeutics, Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland; SleepWell Research Program, Faculty of Medicine, University of Helsinki, Helsinki, 00014, Finland
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Goldenthal HJ, Gill T, Rivera C, Gouze KR, Cicchetti C. Implementing trauma-informed care in a special education setting: An initial exploration of a multi-tiered model. Eval Program Plann 2024; 103:102407. [PMID: 38367349 DOI: 10.1016/j.evalprogplan.2024.102407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 12/19/2023] [Accepted: 01/26/2024] [Indexed: 02/19/2024]
Abstract
Implementing trauma-informed care in a special education environment serving youth from historically marginalized communities with high levels of exposure to potentially traumatic events (PTEs) requires a systematic tiered approach consistent with public health guidelines. Little is known about the implementation of this framework in special education settings where youth have significant emotional and behavioral difficulties. To address this need, a consultant-community partnership was forged between a hospital providing mental health services and a therapeutic day school that serves a special education cooperative. The current case study explores the design and implementation of a three-tiered model of trauma-informed care in a special education setting. This study will address the specific practices implemented at each tier, discuss successes and challenges, and summarize future directions for research, practice, and policy.
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Affiliation(s)
| | - Tara Gill
- Northwestern University Feinberg School of Medicine, Department of Psychiatry and Behavioral Sciences, Chicago, IL, USA; Ann & Robert H. Lurie Children's Hospital of Chicago, Pritzker Department of Psychiatry and Behavioral Health, Chicago, IL, USA
| | - Claudio Rivera
- University of Chicago Medicine, Department of Psychiatry and Behavioral Neuroscience, Chicago, IL, USA
| | - Karen R Gouze
- Northwestern University Feinberg School of Medicine, Department of Psychiatry and Behavioral Sciences, Chicago, IL, USA; Ann & Robert H. Lurie Children's Hospital of Chicago, Pritzker Department of Psychiatry and Behavioral Health, Chicago, IL, USA
| | - Colleen Cicchetti
- Northwestern University Feinberg School of Medicine, Department of Psychiatry and Behavioral Sciences, Chicago, IL, USA; Ann & Robert H. Lurie Children's Hospital of Chicago, Pritzker Department of Psychiatry and Behavioral Health, Chicago, IL, USA
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Tessier M, Garcia MS, Goubert E, Blasco E, Consumi A, Dehapiot B, Tian L, Molinari F, Laurin J, Guillemot F, Hübner CA, Pellegrino C, Rivera C. Bumetanide induces post-traumatic microglia-interneuron contact to promote neurogenesis and recovery. Brain 2023; 146:4247-4261. [PMID: 37082944 PMCID: PMC10545516 DOI: 10.1093/brain/awad132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 02/20/2023] [Accepted: 03/27/2023] [Indexed: 04/22/2023] Open
Abstract
Although the Na-K-Cl cotransporter (NKCC1) inhibitor bumetanide has prominent positive effects on the pathophysiology of many neurological disorders, the mechanism of action is obscure. Attention paid to elucidating the role of Nkcc1 has mainly been focused on neurons, but recent single cell mRNA sequencing analysis has demonstrated that the major cellular populations expressing NKCC1 in the cortex are non-neuronal. We used a combination of conditional transgenic animals, in vivo electrophysiology, two-photon imaging, cognitive behavioural tests and flow cytometry to investigate the role of Nkcc1 inhibition by bumetanide in a mouse model of controlled cortical impact (CCI). Here, we found that bumetanide rescues parvalbumin-positive interneurons by increasing interneuron-microglia contacts shortly after injury. The longitudinal phenotypic changes in microglia were significantly modified by bumetanide, including an increase in the expression of microglial-derived BDNF. These effects were accompanied by the prevention of CCI-induced decrease in hippocampal neurogenesis. Treatment with bumetanide during the first week post-CCI resulted in significant recovery of working and episodic memory as well as changes in theta band oscillations 1 month later. These results disclose a novel mechanism for the neuroprotective action of bumetanide mediated by an acceleration of microglial activation dynamics that leads to an increase in parvalbumin interneuron survival following CCI, possibly resulting from increased microglial BDNF expression and contact with interneurons. Salvage of interneurons may normalize ambient GABA, resulting in the preservation of adult neurogenesis processes as well as contributing to bumetanide-mediated improvement of cognitive performance.
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Affiliation(s)
- Marine Tessier
- Aix Marseille Univ, INSERM, INMED, 13273 Marseille, France
| | - Marta Saez Garcia
- Neuroscience Center, 00014 University of Helsinki, Helsinki, Finland
| | | | - Edith Blasco
- Aix Marseille Univ, INSERM, INMED, 13273 Marseille, France
| | | | - Benoit Dehapiot
- Aix Marseille Univ, CNRS, IBDM-UMR7288, Turing Center for Living Systems, 13288 Marseille, France
| | - Li Tian
- Institute of Biomedicine and Translational Medicine, University of Tartu, 50411 Tartu, Estonia
| | | | - Jerome Laurin
- Aix Marseille Univ, INSERM, INMED, 13273 Marseille, France
| | | | - Christian A Hübner
- Institut für Humangenetik, Universitätsklinikum Jena, 07747 Jena, Germany
| | | | - Claudio Rivera
- Aix Marseille Univ, INSERM, INMED, 13273 Marseille, France
- Neuroscience Center, 00014 University of Helsinki, Helsinki, Finland
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Hugues N, Pin-Barre C, Brioche T, Pellegrino C, Berton E, Rivera C, Laurin J. High-intensity training with short and long intervals regulate cortical neurotrophic factors, apoptosis markers and chloride homeostasis in rats with stroke. Physiol Behav 2023; 266:114190. [PMID: 37055005 DOI: 10.1016/j.physbeh.2023.114190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/29/2023] [Accepted: 04/04/2023] [Indexed: 04/15/2023]
Abstract
BACKGROUND/PURPOSE The optimal endurance exercise parameters remain to be defined to potentiate long-term functional recovery after stroke. We aim to assess the effects of individualized high-intensity interval training (HIIT) with either long or short intervals on neurotrophic factors and their receptors, apoptosis markers and the two-main cation-chloride cotransporters in the ipsi- and contralesional cerebral cortices in rats with cerebral ischemia. Endurance performance and sensorimotor functions were also assessed METHODS: : Rats with a 2-hour transient middle cerebral artery occlusion (tMCAO) performed work-matched HIIT4 (intervals: 4min) or HIIT1 (intervals: 1min) on treadmill for 2 weeks. Incremental exercises and sensorimotor tests were performed at day 1 (D1), D8, and D15 after tMCAO. Molecular analyses were achieved in both the paretic and non-paretic triceps brachii muscles and the ipsi- and contralesional cortices at D17 RESULTS: : Gains in endurance performance are in a time-dependent manner from the first week of training. This enhancement is supported by the upregulation of metabolic markers in both triceps brachii muscles. Both regimens alter the expression of neurotrophic markers and chloride homeostasis in a specific manner in the ipsi- and contralesional cortices. HIIT acts on apoptosis markers by promoting anti-apoptotic proteins in the ipsilesional cortex CONCLUSION: : HIIT regimens seem to be of clinical relevance in the critical period of stroke rehabilitation by strongly improving aerobic performance. Also, the observed cortical changes suggest an influence of HIIT on neuroplasticity in both ipsi- and contralesional hemispheres. Such neurotrophic markers might be considered as biomarkers of functional recovery in individuals with stroke.
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Affiliation(s)
- Nicolas Hugues
- Aix Marseille Univ, INSERM, INMED, Marseille, France; Aix Marseille Univ, CNRS, ISM, Marseille, France
| | | | - Thomas Brioche
- Université de Montpellier, INRAE, DMEM, Montpellier, France
| | | | - Eric Berton
- Aix Marseille Univ, CNRS, ISM, Marseille, France
| | | | - Jérôme Laurin
- Aix Marseille Univ, INSERM, INMED, Marseille, France.
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Ford-Paz RE, DeCarlo Santiago C, Bustos Y, Uriarte JJ, Distel LML, Ros AM, Coyne CA, Rivera C, Guo S, Rusch D, St Jean N, Hilado A, Zarzour H, Gomez R, Cicchetti C. Acceptability and initial promise of trainings for community stakeholders serving refugee and immigrant families. Psychol Serv 2023; 20:188-201. [PMID: 35099224 DOI: 10.1037/ser0000457] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Cumulative traumatic migration experiences are compounded by escalating chronic distress related to the current sociopolitical climate for refugee and immigrant children and families. The aim of this open trial was to conduct a preliminary evaluation of You're Not Alone, a rapidly mounted, strengths-based, community-focused capacity building training initiative for stakeholders interacting with refugee and immigrant children and families in the Chicago area. Trainings, based on Trauma-Informed Care (TIC) and psychological first aid frameworks, adapted education and universal health promotion strategies for population-specific chronic traumatic stress. Two groups of participants (N = 948), who attended either mandatory (n = 659 educators) or voluntary (n = 289 community stakeholders) trainings, completed surveys at pretraining, post-training, and 6-week follow-up. Outcome indices included participant satisfaction, acceptability of training model, and changes in knowledge, attitudes, and behaviors. Over 90% of participants reported satisfaction and acceptability of trainings. For educators, hierarchical linear modeling analyses demonstrated significant increases in trauma knowledge, refugee and immigrant-specific knowledge, positive attitudes toward TIC over time, and a decrease in negative attitudes toward immigrants. Over 95% of participants indicated that they learned and intended to use new strategies to help serve refugee and immigrant children and families. At follow-up, over 80% of those who completed the survey had utilized at least one strategy, and over 55% indicated that they were using resources that they learned about in the training. This study demonstrates that capacity-building trainings swiftly developed and disseminated to community stakeholders can produce positive change in knowledge, attitudes, and practices. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Nieminen JO, Pospelov AS, Koponen LM, Yrjölä P, Shulga A, Khirug S, Rivera C. Transcranial magnetic stimulation set-up for small animals. Front Neurosci 2022; 16:935268. [PMID: 36440290 PMCID: PMC9685557 DOI: 10.3389/fnins.2022.935268] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 10/27/2022] [Indexed: 12/23/2023] Open
Abstract
Transcranial magnetic stimulation (TMS) is widely applied on humans for research and clinical purposes. TMS studies on small animals, e.g., rodents, can provide valuable knowledge of the underlying neurophysiological mechanisms. Administering TMS on small animals is, however, prone to technical difficulties, mainly due to their small head size. In this study, we aimed to develop an energy-efficient coil and a compatible experimental set-up for administering TMS on rodents. We applied a convex optimization process to develop a minimum-energy coil for TMS on rats. As the coil windings of the optimized coil extend to a wide region, we designed and manufactured a holder on which the rat lies upside down, with its head supported by the coil. We used the set-up to record TMS-electromyography, with electromyography recorded from limb muscles with intramuscular electrodes. The upside-down placement of the rat allowed the operator to easily navigate the TMS without the coil blocking their field of view. With this paradigm, we obtained consistent motor evoked potentials from all tested animals.
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Affiliation(s)
- Jaakko O. Nieminen
- Department of Neuroscience and Biomedical Engineering, Aalto University School of Science, Espoo, Finland
- BioMag Laboratory, HUS Medical Imaging Centre, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Biomedical Imaging Unit, A.I. Virtanen Institute, University of Eastern Finland, Kuopio, Finland
| | - Alexey S. Pospelov
- Faculty of Biological and Environmental Sciences, Molecular and Integrative Biosciences, University of Helsinki, Helsinki, Finland
- Department of Clinical Neurophysiology, BABA Center, Children’s Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
- Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Lari M. Koponen
- Department of Neuroscience and Biomedical Engineering, Aalto University School of Science, Espoo, Finland
| | - Pauliina Yrjölä
- BioMag Laboratory, HUS Medical Imaging Centre, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Clinical Neurophysiology, BABA Center, Children’s Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
- Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Anastasia Shulga
- BioMag Laboratory, HUS Medical Imaging Centre, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Physical and Rehabilitation Medicine, Helsinki University Hospital, Helsinki, Finland
| | - Stanislav Khirug
- Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Claudio Rivera
- Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- INMED (INSERM U1249), Aix-Marseille Université, Marseille, France
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Jabbal I, Saravia D, Rivera C, Yaghi M, Dominguez B, Henry V, Liang H, Nahleh Z, Alley E, Arteta-Bulos R. EP08.01-023 Factors Associated with Survival and Refusal of Physician Recommended Immunotherapy in Metastatic Non Small Cell Lung Cancer. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.595] [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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Hugues N, Pin-Barre C, Pellegrino C, Rivera C, Berton E, Laurin J. Time-Dependent Cortical Plasticity during Moderate-Intensity Continuous Training Versus High-Intensity Interval Training in Rats. Cereb Cortex 2022; 32:3829-3847. [PMID: 35029628 DOI: 10.1093/cercor/bhab451] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 11/14/2022] Open
Abstract
The temporal pattern of cortical plasticity induced by high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) is required to clarify their relative benefits to prevent neurological disorders. The purpose of this study is to define the time-dependent effects of work-matched HIIT and MICT on cortical plasticity, endurance, and sensorimotor performances over an 8-week training period in healthy rats. Adult healthy rats performed incremental exercise tests and sensorimotor tests before and at 2, 4, and 8 weeks of training. In parallel, cortical markers related to neurotrophic, angiogenic, and metabolic activities were assessed. Results indicate that HIIT induced an early and superior endurance improvement compared to MICT. We found significant enhancement of speed associated with lactate threshold (SLT) and maximal speed (Smax) in HIIT animals. MICT promoted an early increase in brain-derived neurotrophic factor and angiogenic/metabolic markers but showed less influence at 8 weeks. HIIT upregulated the insulin-like growth factor-1 (IGF-1) as well as neurotrophic, metabolic/angiogenic markers at 2 and 8 weeks and downregulated the neuronal K-Cl cotransporter KCC2 that regulates GABAA-mediated transmission. HIIT and MICT are effective in a time-dependent manner suggesting a complementary effect that might be useful in physical exercise guidelines for maintaining brain health.
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Affiliation(s)
- Nicolas Hugues
- Aix-Marseille Univ, INSERM, INMED, Marseille, France
- Aix-Marseille Univ, CNRS, ISM, Marseille, France
| | | | | | | | - Eric Berton
- Aix-Marseille Univ, CNRS, ISM, Marseille, France
| | - Jérôme Laurin
- Aix-Marseille Univ, INSERM, INMED, Marseille, France
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Koskuvi M, Lehtonen Š, Trontti K, Keuters M, Wu YC, Koivisto H, Ludwig A, Plotnikova L, Virtanen PLJ, Räsänen N, Kaipainen S, Hyötyläinen I, Dhungana H, Giniatullina R, Ojansuu I, Vaurio O, Cannon TD, Lönnqvist J, Therman S, Suvisaari J, Kaprio J, Lähteenvuo M, Tohka J, Giniatullin R, Rivera C, Hovatta I, Tanila H, Tiihonen J, Koistinaho J. Contribution of astrocytes to familial risk and clinical manifestation of schizophrenia. Glia 2021; 70:650-660. [PMID: 34936134 PMCID: PMC9306586 DOI: 10.1002/glia.24131] [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: 06/25/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 12/28/2022]
Abstract
Previous studies have implicated several brain cell types in schizophrenia (SCZ), but the genetic impact of astrocytes is unknown. Considering their high complexity in humans, astrocytes are likely key determinants of neurodevelopmental diseases, such as SCZ. Human induced pluripotent stem cell (hiPSC)‐derived astrocytes differentiated from five monozygotic twin pairs discordant for SCZ and five healthy subjects were studied for alterations related to high genetic risk and clinical manifestation of SCZ in astrocyte transcriptomics, neuron‐astrocyte co‐cultures, and in humanized mice. We found gene expression and signaling pathway alterations related to synaptic dysfunction, inflammation, and extracellular matrix components in SCZ astrocytes, and demyelination in SCZ astrocyte transplanted mice. While Ingenuity Pathway Analysis identified SCZ disease and synaptic transmission pathway changes in SCZ astrocytes, the most consistent findings were related to collagen and cell adhesion associated pathways. Neuronal responses to glutamate and GABA differed between astrocytes from control persons, affected twins, and their unaffected co‐twins and were normalized by clozapine treatment. SCZ astrocyte cell transplantation to the mouse forebrain caused gene expression changes in synaptic dysfunction and inflammation pathways of mouse brain cells and resulted in behavioral changes in cognitive and olfactory functions. Differentially expressed transcriptomes and signaling pathways related to synaptic functions, inflammation, and especially collagen and glycoprotein 6 pathways indicate abnormal extracellular matrix composition in the brain as one of the key characteristics in the etiology of SCZ.
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Affiliation(s)
- Marja Koskuvi
- Neuroscience Center, University of Helsinki, Helsinki, Finland.,A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Šárka Lehtonen
- Neuroscience Center, University of Helsinki, Helsinki, Finland.,A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Kalevi Trontti
- Neuroscience Center, University of Helsinki, Helsinki, Finland.,SleepWell Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Psychology and Logopedics, University of Helsinki, Helsinki, Finland
| | - Meike Keuters
- Neuroscience Center, University of Helsinki, Helsinki, Finland.,A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Ying-Chieh Wu
- Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Hennariikka Koivisto
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | | | - Lidiia Plotnikova
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | | | - Noora Räsänen
- Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Satu Kaipainen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Ida Hyötyläinen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Hiramani Dhungana
- Neuroscience Center, University of Helsinki, Helsinki, Finland.,A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Raisa Giniatullina
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Ilkka Ojansuu
- Department of Forensic Psychiatry, University of Eastern Finland, Niuvanniemi Hospital, Kuopio, Finland
| | - Olli Vaurio
- Department of Forensic Psychiatry, University of Eastern Finland, Niuvanniemi Hospital, Kuopio, Finland
| | - Tyrone D Cannon
- Department of Psychology and Psychiatry, Yale University, New Haven, Connecticut, USA
| | - Jouko Lönnqvist
- Mental Health Unit, Department of Public Health Solutions, National Institute for Health and Welfare, Helsinki, Finland.,Department of Psychiatry, University of Helsinki, Helsinki, Finland
| | - Sebastian Therman
- Mental Health Unit, Department of Public Health Solutions, National Institute for Health and Welfare, Helsinki, Finland
| | - Jaana Suvisaari
- Mental Health Unit, Department of Public Health Solutions, National Institute for Health and Welfare, Helsinki, Finland
| | - Jaakko Kaprio
- Institute for Molecular Medicine FIMM, University of Helsinki, Helsinki, Finland
| | - Markku Lähteenvuo
- Department of Forensic Psychiatry, University of Eastern Finland, Niuvanniemi Hospital, Kuopio, Finland
| | - Jussi Tohka
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Rashid Giniatullin
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Claudio Rivera
- Neuroscience Center, University of Helsinki, Helsinki, Finland.,INSERM, Institute of Mediterranean Neurobiology, Aix-Marseille University, Marseille, France
| | - Iiris Hovatta
- Neuroscience Center, University of Helsinki, Helsinki, Finland.,SleepWell Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Psychology and Logopedics, University of Helsinki, Helsinki, Finland
| | - Heikki Tanila
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Jari Tiihonen
- Neuroscience Center, University of Helsinki, Helsinki, Finland.,Department of Forensic Psychiatry, University of Eastern Finland, Niuvanniemi Hospital, Kuopio, Finland.,Department of Clinical Neuroscience, Karolinska Institutet, and Center for Psychiatric Research, Stockholm City Council, Stockholm, Sweden
| | - Jari Koistinaho
- Neuroscience Center, University of Helsinki, Helsinki, Finland.,A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
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Lorca LA, Leão Ribeiro I, Torres-Castro R, Sacomori C, Rivera C. [Psychometric properties of the Post-COVID 19 Functional Status scale for adult COVID 19 survivors]. Rehabilitacion (Madr) 2021; 56:337-343. [PMID: 34426013 PMCID: PMC8324401 DOI: 10.1016/j.rh.2021.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/20/2021] [Accepted: 07/25/2021] [Indexed: 12/23/2022]
Abstract
Introducción Para evaluar el estado funcional es fundamental contar con instrumentos simples que permitan hacer un seguimiento del curso de los síntomas y del compromiso que pueden presentar las personas adultas sobrevivientes de COVID-19. Este estudio tiene como objetivo evaluar las propiedades psicométricas de la escala de estado funcional post-COVID-19 (Post COVID-19 Functional Status [PCFS]). Material y método Corresponde a un estudio transversal de validación de escala. En la validación de contenido participaron 22 profesionales sanitarios, quienes mediante juicio de expertos evaluaron la escala en las categorías de suficiencia, claridad, coherencia y relevancia. Así también, dos profesionales realizaron la prueba de test-retest con 20 personas que habían cursado con infección por COVID-19. Adicionalmente, expusieron sus observaciones y comentarios. El grado de acuerdo entre los expertos fue determinado con el coeficiente de Kendall. Para el test-retest se utilizó el coeficiente de Spearman. En todos los análisis fue considerado significativo un valor de p < 0,05. Resultados En relación con la validez de contenido, hubo acuerdo entre evaluadores solo para la categoría relevancia (p = 0,032). Se obtuvo buena fuerza de concordancia entre dos evaluadores (Rho de Spearman = 0,929 para la puntuación). Se ajustaron algunos términos del contenido sin afectar la estructura general de la escala. De los 16 ítems originales que componen la escala PCFS, no se eliminó ninguno. Conclusiones La versión en español para Chile de la PCFS, adaptada al contexto cultural del país, muestra buenas características psicométricas en términos de confiabilidad.
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Affiliation(s)
- L A Lorca
- Servicio de Medicina Física y Rehabilitación, Hospital del Salvador, Servicio de Salud Metropolitano Oriente, Santiago, Chile
| | - I Leão Ribeiro
- Departamento de Kinesiología, Facultad de Ciencias de la Salud, Universidad Católica del Maule, Talca, Chile
| | - R Torres-Castro
- Departamento de Kinesiología, Facultad de Medicina, Universidad de Chile, Santiago, Chile.
| | - C Sacomori
- Escuela de Kinesiología, Universidad Bernardo O'Higgins, Santiago, Chile
| | - C Rivera
- Clínica Alemana, Santiago, Chile; Hospital de Urgencia Asistencia Pública, Santiago, Chile
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Lopes MA, Fernandes DT, Markman RL, Ribeiro ACP, Morais K, Brandão TB, Rivera C, Santos-Silva AR. THE IMPACT OF AN EDUCATIONAL VIDEO ABOUT RADIOTHERAPY AND ITS TOXICITIES IN HEAD AND NECK CANCER PATIENTS. Oral Surg Oral Med Oral Pathol Oral Radiol 2021. [DOI: 10.1016/j.oooo.2021.03.105] [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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12
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González-Romero ME, Rivera C, Cancino K, Geu-Flores F, Cosio EG, Ghislain M, Halkier BA. Correction to: Bioengineering potato plants to produce benzylglucosinolate for improved broad-spectrum pest and disease resistance. Transgenic Res 2021; 30:661-662. [PMID: 34128172 PMCID: PMC8478744 DOI: 10.1007/s11248-021-00265-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2021] [Indexed: 11/29/2022]
Affiliation(s)
- M E González-Romero
- Applied Biotechnology Laboratory, International Potato Centre, P.O. Box 1558, Lima, 12, Peru.,Department of Plant and Environmental Sciences, DynaMo Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.,Pathology Department, Instituto Nacional de Enfermedades Neoplásicas, Av. Angamos Este 2520, Lima, 15038, Peru
| | - C Rivera
- Applied Biotechnology Laboratory, International Potato Centre, P.O. Box 1558, Lima, 12, Peru.,Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, 12, Peru
| | - K Cancino
- Applied Biotechnology Laboratory, International Potato Centre, P.O. Box 1558, Lima, 12, Peru.,Pathology Department, Instituto Nacional de Enfermedades Neoplásicas, Av. Angamos Este 2520, Lima, 15038, Peru
| | - F Geu-Flores
- Department of Plant and Environmental Sciences, Copenhagen Plant Science Center & Section for Plant Biochemistry, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, Denmark
| | - E G Cosio
- Chemistry Section, Pontificia Universidad Católica del Perú, Av. Universitaria 1801, Lima, 15088, Peru
| | - M Ghislain
- Applied Biotechnology Laboratory, International Potato Centre, P.O. Box 1558, Lima, 12, Peru.
| | - B A Halkier
- Department of Plant and Environmental Sciences, DynaMo Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.
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13
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González-Romero ME, Rivera C, Cancino K, Geu-Flores F, Cosio EG, Ghislain M, Halkier BA. Bioengineering potato plants to produce benzylglucosinolate for improved broad-spectrum pest and disease resistance. Transgenic Res 2021; 30:649-660. [PMID: 33956271 PMCID: PMC8478770 DOI: 10.1007/s11248-021-00255-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 04/10/2021] [Indexed: 10/31/2022]
Abstract
In traditional, small-scale agriculture in the Andes, potatoes are frequently co-cultivated with the Andean edible tuber Tropaeolum tuberosum, commonly known as mashua, which is believed to exert a pest and disease protective role due to its content of the phenylalanine-derived benzylglucosinolate (BGLS). We bioengineered the production of BGLS in potato by consecutive generation of stable transgenic events with two polycistronic constructs encoding for expression of six BGLS biosynthetic genes from Arabidopsis thaliana. First, we integrated a polycistronic construct coding for the last three genes of the pathway (SUR1, UGT74B1 and SOT16) into potato driven by the cauliflower mosaic virus 35S promoter. After identifying the single-insertion transgenic event with the highest transgene expression, we stacked a second polycistronic construct coding for the first three genes in the pathway (CYP79A2, CYP83B1 and GGP1) driven by the leaf-specific promoter of the rubisco small subunit from chrysanthemum. We obtained transgenic events producing as high as 5.18 pmol BGLS/mg fresh weight compared to the non-transgenic potato plant producing undetectable levels of BGLS. Preliminary bioassays suggest a possible activity against Phytophthora infestans, causing the late blight disease and Premnotrypes suturicallus, referred to as the Andean potato weevil. However, we observed altered leaf morphology, abnormally thick and curlier leaves, reduced growth and tuber production in five out of ten selected transgenic events, which indicates that the expression of BGLS biosynthetic genes has an undesirable impact on the potato. Optimization of the expression of the BGLS biosynthetic pathway in potato is required to avoid alterations of plant development.
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Affiliation(s)
- M E González-Romero
- Applied Biotechnology Laboratory, International Potato Centre, P.O. Box 1558, Lima, 12, Peru.,Department of Plant and Environmental Sciences, DynaMo Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.,Pathology Department, Instituto Nacional de Enfermedades Neoplásicas, Av. Angamos Este 2520, Lima, 15038, Peru
| | - C Rivera
- Applied Biotechnology Laboratory, International Potato Centre, P.O. Box 1558, Lima, 12, Peru.,Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, 12, Peru
| | - K Cancino
- Applied Biotechnology Laboratory, International Potato Centre, P.O. Box 1558, Lima, 12, Peru.,Pathology Department, Instituto Nacional de Enfermedades Neoplásicas, Av. Angamos Este 2520, Lima, 15038, Peru
| | - F Geu-Flores
- Department of Plant and Environmental Sciences, Copenhagen Plant Science Center & Section for Plant Biochemistry, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, Denmark
| | - E G Cosio
- Chemistry Section, Pontificia Universidad Católica del Perú, Av. Universitaria 1801, Lima, 15088, Peru
| | - M Ghislain
- Applied Biotechnology Laboratory, International Potato Centre, P.O. Box 1558, Lima, 12, Peru.
| | - B A Halkier
- Department of Plant and Environmental Sciences, DynaMo Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.
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14
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Hugues N, Pellegrino C, Rivera C, Berton E, Pin-Barre C, Laurin J. Is High-Intensity Interval Training Suitable to Promote Neuroplasticity and Cognitive Functions after Stroke? Int J Mol Sci 2021; 22:3003. [PMID: 33809413 PMCID: PMC7998434 DOI: 10.3390/ijms22063003] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 12/12/2022] Open
Abstract
Stroke-induced cognitive impairments affect the long-term quality of life. High-intensity interval training (HIIT) is now considered a promising strategy to enhance cognitive functions. This review is designed to examine the role of HIIT in promoting neuroplasticity processes and/or cognitive functions after stroke. The various methodological limitations related to the clinical relevance of studies on the exercise recommendations in individuals with stroke are first discussed. Then, the relevance of HIIT in improving neurotrophic factors expression, neurogenesis and synaptic plasticity is debated in both stroke and healthy individuals (humans and rodents). Moreover, HIIT may have a preventive role on stroke severity, as found in rodents. The potential role of HIIT in stroke rehabilitation is reinforced by findings showing its powerful neurogenic effect that might potentiate cognitive benefits induced by cognitive tasks. In addition, the clinical role of neuroplasticity observed in each hemisphere needs to be clarified by coupling more frequently to cellular/molecular measurements and behavioral testing.
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Affiliation(s)
- Nicolas Hugues
- INMED, INSERM, Aix-Marseille University, 13007 Marseille, France; (N.H.); (C.P.); (C.R.)
- CNRS, ISM, Aix-Marseille University, 13007 Marseille, France; (E.B.); (C.P.-B.)
| | - Christophe Pellegrino
- INMED, INSERM, Aix-Marseille University, 13007 Marseille, France; (N.H.); (C.P.); (C.R.)
| | - Claudio Rivera
- INMED, INSERM, Aix-Marseille University, 13007 Marseille, France; (N.H.); (C.P.); (C.R.)
| | - Eric Berton
- CNRS, ISM, Aix-Marseille University, 13007 Marseille, France; (E.B.); (C.P.-B.)
| | - Caroline Pin-Barre
- CNRS, ISM, Aix-Marseille University, 13007 Marseille, France; (E.B.); (C.P.-B.)
| | - Jérôme Laurin
- INMED, INSERM, Aix-Marseille University, 13007 Marseille, France; (N.H.); (C.P.); (C.R.)
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15
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Khirug S, Soni S, Saez Garcia M, Tessier M, Zhou L, Kulesskaya N, Rauvala H, Lindholm D, Ludwig A, Molinari F, Rivera C. Protective Role of Low Ethanol Administration Following Ischemic Stroke via Recovery of KCC2 and p75 NTR Expression. Mol Neurobiol 2021; 58:1145-1161. [PMID: 33099743 PMCID: PMC7878264 DOI: 10.1007/s12035-020-02176-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 10/14/2020] [Indexed: 01/31/2023]
Abstract
A striking result from epidemiological studies show a correlation between low alcohol intake and lower incidence for ischemic stroke and severity of derived brain injury. Although reduced apoptosis and inflammation has been suggested to be involved, little is known about the mechanism mediating this effect in vivo. Increase in intracellular chloride concentration and derived depolarizing GABAAR-mediated transmission are common consequences following various brain injuries and are caused by the abnormal expression levels of the chloride cotransporters NKCC1 and KCC2. Downstream pro-apoptotic signaling through p75NTR may link GABAA depolarization with post-injury neuronal apoptosis. Here, we show that changes in GABAergic signaling, Cl- homeostasis, and expression of chloride cotransporters in the post-traumatic mouse brain can be significantly reduced by administration of 3% ethanol to the drinking water. Ethanol-induced upregulation of KCC2 has a positive impact on neuronal survival, preserving a large part of the cortical peri-infarct zone, as well as preventing the massive post-ischemic upregulation of the pro-apoptotic protein p75NTR. Importantly, intracortical multisite in vivo recordings showed that ethanol treatment could significantly ameliorate stroke-induced reduction in cortical activity. This surprising finding discloses a pathway triggered by low concentration of ethanol as a novel therapeutically relevant target.
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Affiliation(s)
- Stanislav Khirug
- Neuroscience Center-HiLIFE, University of Helsinki, 00014, Helsinki, Finland.
| | - Shetal Soni
- Neuroscience Center-HiLIFE, University of Helsinki, 00014, Helsinki, Finland
| | - Marta Saez Garcia
- Neuroscience Center-HiLIFE, University of Helsinki, 00014, Helsinki, Finland
| | - Marine Tessier
- INMED (INSERM U1249), Aix-Marseille Université, Marseille, France
| | - Liang Zhou
- Neuroscience Center-HiLIFE, University of Helsinki, 00014, Helsinki, Finland
| | - Natalia Kulesskaya
- Neuroscience Center-HiLIFE, University of Helsinki, 00014, Helsinki, Finland
| | - Heikki Rauvala
- Neuroscience Center-HiLIFE, University of Helsinki, 00014, Helsinki, Finland
| | - Dan Lindholm
- Medicum, Department of Biochemistry and Developmental Biology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Minerva Foundation Institute for Medical Research, Biomedicum Helsinki 2U, Helsinki, Finland
| | - Anastasia Ludwig
- Neuroscience Center-HiLIFE, University of Helsinki, 00014, Helsinki, Finland
| | | | - Claudio Rivera
- Neuroscience Center-HiLIFE, University of Helsinki, 00014, Helsinki, Finland.
- INMED (INSERM U1249), Aix-Marseille Université, Marseille, France.
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16
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Marshall P, Garton DR, Taira T, Võikar V, Vilenius C, Kulesskaya N, Rivera C, Andressoo JO. Elevated expression of endogenous glial cell line-derived neurotrophic factor impairs spatial memory performance and raises inhibitory tone in the hippocampus. Eur J Neurosci 2021; 53:2469-2482. [PMID: 33481269 DOI: 10.1111/ejn.15126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 01/07/2021] [Accepted: 01/19/2021] [Indexed: 01/16/2023]
Abstract
Parvalbumin-positive interneurons (PV+) are a key component of inhibitory networks in the brain and are known to modulate memory and learning by shaping network activity. The mechanisms of PV+ neuron generation and maintenance are not fully understood, yet current evidence suggests that signalling via the glial cell line-derived neurotrophic factor (GDNF) receptor GFRα1 positively modulates the migration and differentiation of PV+ interneurons in the cortex. Whether GDNF also regulates PV+ cells in the hippocampus is currently unknown. In this study, we utilized a Gdnf "hypermorph" mouse model where GDNF is overexpressed from the native gene locus, providing greatly increased spatial and temporal specificity of protein expression over established models of ectopic expression. Gdnfwt/hyper mice demonstrated impairments in long-term memory performance in the Morris water maze test and an increase in inhibitory tone in the hippocampus measured electrophysiologically in acute brain slice preparations. Increased PV+ cell number was confirmed immunohistochemically in the hippocampus and in discrete cortical areas and an increase in epileptic seizure threshold was observed in vivo. The data consolidate prior evidence for the actions of GDNF as a regulator of PV+ cell development in the cortex and demonstrate functional effects upon network excitability via modulation of functional GABAergic signalling and under epileptic challenge.
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Affiliation(s)
- Pepin Marshall
- HiLIFE Neuroscience Centre, University of Helsinki, Helsinki, Finland
| | - Daniel R Garton
- Department of Pharmacology, Faculty of Medicine & Helsinki Institute of Life Science (HiLIFE) Helsinki, University of Helsinki, Helsinki, Finland
| | - Tomi Taira
- HiLIFE Neuroscience Centre, University of Helsinki, Helsinki, Finland.,Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - Vootele Võikar
- HiLIFE Neuroscience Centre, University of Helsinki, Helsinki, Finland
| | - Carolina Vilenius
- HiLIFE Neuroscience Centre, University of Helsinki, Helsinki, Finland
| | | | - Claudio Rivera
- HiLIFE Neuroscience Centre, University of Helsinki, Helsinki, Finland.,Institut de Neurobiologie de la Méditerranée, INMED UMR901, Marseille, France
| | - Jaan-Olle Andressoo
- Department of Pharmacology, Faculty of Medicine & Helsinki Institute of Life Science (HiLIFE) Helsinki, University of Helsinki, Helsinki, Finland.,Karolinska Institute, Division of Neurogeriatrics, Department of Neurobiology, Care Sciences and Society (NVS), Stockholm, Sweden
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17
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Winkel F, Ryazantseva M, Voigt MB, Didio G, Lilja A, Llach Pou M, Steinzeig A, Harkki J, Englund J, Khirug S, Rivera C, Palva S, Taira T, Lauri SE, Umemori J, Castrén E. Pharmacological and optical activation of TrkB in Parvalbumin interneurons regulate intrinsic states to orchestrate cortical plasticity. Mol Psychiatry 2021; 26:7247-7256. [PMID: 34321594 PMCID: PMC8872988 DOI: 10.1038/s41380-021-01211-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/22/2021] [Accepted: 06/23/2021] [Indexed: 02/06/2023]
Abstract
Elevated states of brain plasticity typical for critical periods of early postnatal life can be reinstated in the adult brain through interventions, such as antidepressant treatment and environmental enrichment, and induced plasticity may be critical for the antidepressant action. Parvalbumin-positive (PV) interneurons regulate the closure of developmental critical periods and can alternate between high and low plasticity states in response to experience in adulthood. We now show that PV plasticity states and cortical networks are regulated through the activation of TrkB neurotrophin receptors. Visual cortical plasticity induced by fluoxetine, a widely prescribed selective serotonin reuptake inhibitor (SSRI) antidepressant, was lost in mice with reduced expression of TrkB in PV interneurons. Conversely, optogenetic gain-of-function studies revealed that activation of an optically activatable TrkB (optoTrkB) specifically in PV interneurons switches adult cortical networks into a state of elevated plasticity within minutes by decreasing the intrinsic excitability of PV interneurons, recapitulating the effects of fluoxetine. TrkB activation shifted cortical networks towards a low PV configuration, promoting oscillatory synchrony, increased excitatory-inhibitory balance, and ocular dominance plasticity. OptoTrkB activation promotes the phosphorylation of Kv3.1 channels and reduces the expression of Kv3.2 mRNA providing a mechanism for the lower excitability. In addition, decreased expression and puncta of Synaptotagmin2 (Syt2), a presynaptic marker of PV interneurons involved in Ca2+-dependent neurotransmitter release, suggests lower inputs onto pyramidal neurons suppressing feed-forward inhibition. Together, the results provide mechanistic insights into how TrkB activation in PV interneurons orchestrates the activity of cortical networks and mediating antidepressant responses in the adult brain.
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Affiliation(s)
- Frederike Winkel
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Maria Ryazantseva
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland ,grid.7737.40000 0004 0410 2071Molecular and Integrative Biosciences Research Programme, University of Helsinki, Helsinki, Finland
| | - Mathias B. Voigt
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Giuliano Didio
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Antonia Lilja
- grid.5012.60000 0001 0481 6099Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands
| | - Maria Llach Pou
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Anna Steinzeig
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Juliana Harkki
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Jonas Englund
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland ,grid.7737.40000 0004 0410 2071Molecular and Integrative Biosciences Research Programme, University of Helsinki, Helsinki, Finland
| | - Stanislav Khirug
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Claudio Rivera
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Satu Palva
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Tomi Taira
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland ,grid.7737.40000 0004 0410 2071Department of Veterinary Biosciences and Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Sari E. Lauri
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland ,grid.7737.40000 0004 0410 2071Molecular and Integrative Biosciences Research Programme, University of Helsinki, Helsinki, Finland
| | - Juzoh Umemori
- Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland.
| | - Eero Castrén
- grid.7737.40000 0004 0410 2071Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
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18
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Rönkkö J, Molchanova S, Revah‐Politi A, Pereira EM, Auranen M, Toppila J, Kvist J, Ludwig A, Neumann J, Bultynck G, Humblet‐Baron S, Liston A, Paetau A, Rivera C, Harms MB, Tyynismaa H, Ylikallio E. Dominant mutations in ITPR3 cause Charcot-Marie-Tooth disease. Ann Clin Transl Neurol 2020; 7:1962-1972. [PMID: 32949214 PMCID: PMC7545616 DOI: 10.1002/acn3.51190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 08/24/2020] [Accepted: 08/24/2020] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE ITPR3, encoding inositol 1,4,5-trisphosphate receptor type 3, was previously reported as a potential candidate disease gene for Charcot-Marie-Tooth neuropathy. Here, we present genetic and functional evidence that ITPR3 is a Charcot-Marie-Tooth disease gene. METHODS Whole-exome sequencing of four affected individuals in an autosomal dominant family and one individual who was the only affected individual in his family was used to identify disease-causing variants. Skin fibroblasts from two individuals of the autosomal dominant family were analyzed functionally by western blotting, quantitative reverse transcription PCR, and Ca2+ imaging. RESULTS Affected individuals in the autosomal dominant family had onset of symmetrical neuropathy with demyelinating and secondary axonal features at around age 30, showing signs of gradual progression with severe distal leg weakness and hand involvement in the proband at age 64. Exome sequencing identified a heterozygous ITPR3 p.Val615Met variant segregating with the disease. The individual who was the only affected in his family had disease onset at age 4 with demyelinating neuropathy. His condition was progressive, leading to severe muscle atrophy below knees and atrophy of proximal leg and hand muscles by age 16. Trio exome sequencing identified a de novo ITPR3 variant p.Arg2524Cys. Altered Ca2+ -transients in p.Val615Met patient fibroblasts suggested that the variant has a dominant-negative effect on inositol 1,4,5-trisphosphate receptor type 3 function. INTERPRETATION Together with two previously identified variants, our report adds further evidence that ITPR3 is a disease-causing gene for CMT and indicates altered Ca2+ homeostasis in disease pathogenesis.
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Affiliation(s)
- Julius Rönkkö
- Stem Cells and Metabolism Research ProgramFaculty of MedicineUniversity of HelsinkiHelsinkiFinland
| | - Svetlana Molchanova
- Stem Cells and Metabolism Research ProgramFaculty of MedicineUniversity of HelsinkiHelsinkiFinland
- Molecular and Integrative Biosciences Research ProgramFaculty of Bio‐ and Environmental SciencesUniversity of HelsinkiHelsinkiFinland
| | - Anya Revah‐Politi
- Institute for Genomic MedicineColumbia University Medical CenterNew YorkNew YorkUSA
- Precision Genomics LaboratoryColumbia University Irving Medical CenterNew YorkNew YorkUSA
| | - Elaine M. Pereira
- Department of PediatricsColumbia University Irving Medical CenterNew YorkNew YorkUSA
| | - Mari Auranen
- Clinical NeurosciencesNeurologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Jussi Toppila
- Department of Clinical NeurophysiologyMedical Imaging CenterHelsinki University Central HospitalHelsinkiFinland
| | - Jouni Kvist
- Stem Cells and Metabolism Research ProgramFaculty of MedicineUniversity of HelsinkiHelsinkiFinland
| | - Anastasia Ludwig
- Neuroscience CenterHelsinki Institute of Life ScienceUniversity of HelsinkiHelsinkiFinland
| | - Julika Neumann
- Department of Microbiology and ImmunologyLaboratory of Adaptive ImmunityKU LeuvenLeuvenBelgium
- VIB‐KU Leuven Center for Brain and Disease ResearchLeuvenBelgium
| | - Geert Bultynck
- Laboratory of Molecular and Cellular SignalingDepartment of Cellular and Molecular Medicine & Leuven Kanker InstituutKU LeuvenLeuvenBelgium
| | | | - Adrian Liston
- Department of Microbiology and ImmunologyLaboratory of Adaptive ImmunityKU LeuvenLeuvenBelgium
- VIB‐KU Leuven Center for Brain and Disease ResearchLeuvenBelgium
- Laboratory of Lymphocyte Signalling and DevelopmentBabraham InstituteCambridgeUnited Kingdom
| | - Anders Paetau
- Department of PathologyHUSLAB and University of HelsinkiHelsinkiFinland
| | - Claudio Rivera
- Neuroscience CenterHelsinki Institute of Life ScienceUniversity of HelsinkiHelsinkiFinland
- Institut de Neurobiologie de la Méditerranée INMED UMR901MarseilleFrance
| | | | - Henna Tyynismaa
- Stem Cells and Metabolism Research ProgramFaculty of MedicineUniversity of HelsinkiHelsinkiFinland
- Neuroscience CenterHelsinki Institute of Life ScienceUniversity of HelsinkiHelsinkiFinland
- Department of Medical and Clinical GeneticsUniversity of HelsinkiHelsinkiFinland
| | - Emil Ylikallio
- Stem Cells and Metabolism Research ProgramFaculty of MedicineUniversity of HelsinkiHelsinkiFinland
- Clinical NeurosciencesNeurologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
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19
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Rivera C, Jeune S, Frazier S, Coccia C. The Family Meal Project: Assessing the Relationship between Healthy Food Consumption and School Lunch Intake in Elementary School Children. J Acad Nutr Diet 2020. [DOI: 10.1016/j.jand.2020.06.166] [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: 10/23/2022]
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20
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Kesaf S, Khirug S, Dinh E, Saez Garcia M, Soni S, Orav E, Delpire E, Taira T, Lauri SE, Rivera C. The Kainate Receptor Subunit GluK2 Interacts With KCC2 to Promote Maturation of Dendritic Spines. Front Cell Neurosci 2020; 14:252. [PMID: 33005130 PMCID: PMC7479265 DOI: 10.3389/fncel.2020.00252] [Citation(s) in RCA: 11] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/22/2020] [Indexed: 12/25/2022] Open
Abstract
Kainate receptors (KAR) play a crucial role in the plasticity and functional maturation of glutamatergic synapses. However, how they regulate structural plasticity of dendritic spines is not known. The GluK2 subunit was recently shown to coexist in a functional complex with the neuronal K-Cl cotransporter KCC2. Apart from having a crucial role in the maturation of GABAergic transmission, KCC2 has a morphogenic role in the maturation of dendritic spines. Here, we show that in vivo local inactivation of GluK2 expression in CA3 hippocampal neurons induces altered morphology of dendritic spines and reduction in mEPSC frequency. GluK2 deficiency also resulted in a strong change in the subcellular distribution of KCC2 as well as a smaller somatodendritic gradient in the reversal potential of GABAA. Strikingly, the aberrant morphology of dendritic spines in GluK2-deficient CA3 pyramidal neurons was restored by overexpression of KCC2. GluK2 silencing in hippocampal neurons significantly reduced the expression of 4.1N and functional form of the actin filament severing protein cofilin. Consistently, assessment of actin dynamics using fluorescence recovery after photobleaching (FRAP) of β-actin showed a significant increase in the stability of F-actin filaments in dendritic spines. In conclusion, our results demonstrate that GluK2-KCC2 interaction plays an important role in the structural maturation of dendritic spines. This also provides novel insights into the connection between KAR dysfunction, structural plasticity, and developmental disorders.
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Affiliation(s)
- Sebnem Kesaf
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.,Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland
| | - Stanislav Khirug
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Emilie Dinh
- Developmental Biology Institute of Marseille, Marseille, France
| | - Marta Saez Garcia
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Shetal Soni
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Ester Orav
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.,Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland
| | - Eric Delpire
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Tomi Taira
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.,Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - Sari E Lauri
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.,Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland
| | - Claudio Rivera
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.,Institut de Neurobiologie de la Méditerranée (INMED) UMR901, Marseille, France
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21
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Fernandes DT, van Heerden WF, Ribeiro AC, Brandão TB, Mello ES, Rivera C, van Heerden MB, Gondak R, Santos-Silva AR, Vargas PA, Lopes MA. Different methods of cell quantification can lead to different results: a comparison of digital methods using a pilot study of dendritic cells in HIV-positive patients. Med Oral Patol Oral Cir Bucal 2020; 25:e431-e438. [PMID: 32134901 PMCID: PMC7211365 DOI: 10.4317/medoral.23472] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 01/20/2020] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Although new digital pathology tools have improved the positive cell quantification, there is a heterogeneity of the quantification methods in the literature. The aim of this study was to evaluate and propose a novel dendritic cells quantification method in squamous cell carcinoma comparing it with a conventional quantification method. MATERIAL AND METHODS Twenty-six squamous cell carcinomas HIV-positive cases affecting the oropharynx, lips and oral cavity were selected. Immunohistochemistry for CD1a, CD83, and CD207 was performed. The immunohistochemical stains were evaluated by automated examination using a positive pixel count algorithm. A conventional quantification method (unspecific area method; UA) and a novel method (specific area method; SA) were performed obtaining the corresponding density of positive dendritic cells for the intratumoral and peritumoral regions. The Mann-Whitney U test was used to verify the influence of the quantification methods on the positive cell counting according to the evaluated regions. Data were subjected to the ANOVA and Student's t-test to verify the influence of the tumour location, stage, histological grade, and amount of inflammation on the dendritic cells density counting. RESULTS The cell quantification method affected the dendritic cells counting independently of the evaluated region (P-value <0.05). Significant differences between methods were also observed according to the tumour features evaluations. CONCLUSIONS The positive cell quantification method influences the dendritic cells density results. Unlike the conventional method (UA method), the novel SA method avoids non-target areas included in the hotspots improving the reliability and reproducibility of the density cell quantification.
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Affiliation(s)
- D-T Fernandes
- Faculdade de Odontologia de Piracicaba - UNICAMP Departamento de Diagnóstico Oral - Semiologia Av. Limeira, 901 CEP 13.414-903 Piracicaba, São Paulo, Brasil
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22
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Ford-Paz RE, Santiago CD, Coyne CA, Rivera C, Guo S, Rusch D, St Jean N, Hilado A, Cicchetti C. You're not alone: A public health response to immigrant/refugee distress in the current sociopolitical context. Psychol Serv 2020; 17:128-138. [PMID: 31464470 DOI: 10.1037/ser0000381] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Recent political events and policy changes in the United States have fueled antirefugee/immigrant rhetoric and an increase of xenophobic harassment and intimidation, which together present a significant threat to the physical and mental health of refugee/immigrant children and families. This article aims to provide an overview of how the current sociopolitical context threatens the public health of refugee and immigrant communities and to describe the role of psychologists in advocating for social justice and responding to this urgent public health need through interprofessional collaboration and translation of scientific knowledge into multilevel intervention development. The case study of the You're Not Alone (YNA) initiative describes swiftly mobilized advocacy efforts (e.g., press conference, webinars, resources development and dissemination) and participatory development and roll-out of community capacity-building trainings to address the needs of refugee/immigrant children and families. Trainings aimed to raise awareness of the refugee/immigrant experience and to equip refugee/immigrant community members and providers across a variety of public sectors to implement culturally responsive and trauma-informed strategies to promote resilience, respond to distress, and prevent mental health crises. Between March 2017 and June 2018, a total of 1,642 individuals attended 48 training events. The role of psychologists in future policy and advocacy efforts to promote mental health among refugee/immigrant families is discussed as well as implications for how other marginalized communities affected by the current sociopolitical climate might benefit from broadening the scope of this public health response. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
| | | | - Claire A Coyne
- Pritzker Department of Psychiatry and Behavioral Health, Lurie Children's Hospital Center for Childhood Resilience
| | - Claudio Rivera
- Pritzker Department of Psychiatry and Behavioral Health, Lurie Children's Hospital Center for Childhood Resilience
| | - Sisi Guo
- Pritzker Department of Psychiatry and Behavioral Health, Lurie Children's Hospital Center for Childhood Resilience
| | - Dana Rusch
- Department of Psychiatry, University of Illinois at Chicago
| | - Nicole St Jean
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine
| | - Aimee Hilado
- Department of Social Work, Northeastern Illinois University
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23
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Bo GA, Cedeño A, Maingón R, Cedeño JP, Gamboa H, Avellan J, Bravo J, Rivera C, Macias I. 172 Effect of period of insertion of a progesterone-releasing device and pro-oestrus length on follicular and luteal characteristics and pregnancy rates to fixed-time AI in Bos indicus heifers. Reprod Fertil Dev 2020. [DOI: 10.1071/rdv32n2ab172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
An experiment was designed to evaluate the effect of the length of insertion of a progesterone (P4)-releasing device and the length of pro-oestrus on follicular and luteal characteristics and pregnancy rates to AI (P/AI) in Bos indicus heifers treated with oestradiol/P4-based treatments. Bos indicus beef heifers (n=374), 22-26 months of age, with a corpus luteum (CL) or at least one follicle ≥8mm in diameter and with a body condition score between 2.5 and 3.5 (1-to-5 scale) were synchronised using three treatments for fixed-time AI (FTAI). On Day 0, all heifers received 2mg of oestradiol benzoate (Sincrodiol, Ourofino) and an intravaginal device with 1g of P4 (Sincrogest, Ourofino). The P4 device was removed on Day 6 in heifers in the J-Synch 6 group (n=120) and on Day 7 in heifers in the J-Synch 7 group (n=105) and conventional group (n=165). All heifers received 500μg of cloprostenol (Sincrocio, Ourofino) and 300IU of equine chorionic gonadotrophin (SincroeCG 6000UI, Ourofino) at the time of P4 device removal. Furthermore, heifers in the conventional treatment group received 0.5mg of oestradiol cypionate (SincroCP, Ourofino) at the same time. In addition, all heifers were tail-painted for oestrus detection (CeloTest, Biotay). Heifers that had lost ≥50% of the tail paint by 70-74h (J-Synch groups) or 48-52h (conventional group) after device removal were FTAI at that time. Heifers not showing oestrus by 70-74h (J-Synch groups) or 48-52h (conventional group) received 10μg of gonadotrophin-releasing hormone (Sincroforte, Ourofino) at the same time and were FTAI 8h later. All heifers were also examined using ultrasonography (Mindray DP50 Vet) every 12h from the time of device removal to determine the time of ovulation, 6 days after ovulation to determine the diameter of the CL, and 28 days after FTAI for P/AI determination. Data were analysed using the MLGM procedure (InfoStat) for normal data families (follicular dynamics) and binary data family (P/AI). The results are shown in Table 1. The diameter of the dominant preovulatory follicle and the CL did not differ among groups (P>0.12). However, the interval from device removal to ovulation was longer in heifers in the J-Synch groups than in heifers in the conventional group (P<0.05). Furthermore, P/AI was not different among groups. In conclusion, although the J-Synch protocols delayed the interval from P4 device removal to ovulation, the three protocols evaluated in the present study were equally effective in Bos indicus heifers.
Table 1.Mean (±s.e.m.) diameter of the preovulatory follicle (P/Foll) and corpus luteum (CL), interval from progesterone (P4) device removal to ovulation, and pregnancy rates to AI (P/AI) in Bos indicus heifers
Treatment
P/Foll, mm
Interval to ovulation, h
CL diameter, mm
P/AI,% (n)
J-Synch 6
10.5±0.7
101.4±2.3a
18.6±1.0
52.0 (62/120)
J-Synch 7
10.6±0.7
96.0±2.2a
16.5±0.9
39.0 (41/105)
Conventional
9.4±0.7
73.0±1.9b
16.8±0.9
45.0 (74/165)
a,bDifferent superscripts denote differences between groups in the interval from P4 device removal to ovulation.
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24
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Kane PF, Hall WL, Bartos J, Boles R, Dupuis M, Hasty E, Kinsey C, Mullins S, Newlon N, Purkiss J, Rivera C, Robarge W, Sakyi-Amfo K, Seeley C, Seigel S, Svee M, Van Erem T, Vindiola A. Determination of Arsenic, Cadmium, Cobalt, Chromium, Lead, Molybdenum, Nickel, and Selenium in Fertilizers by Microwave Digestion and Inductively Coupled Plasma-Optical Emission Spectrometry Detection: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/89.6.1447] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
There is increasing regulatory interest in the non-nutritive metals content of fertilizer materials, but at present there is no consensus analytical method for acid digestion and instrument detection of those elements in fertilizer matrixes. This lack of method standardization has resulted in unacceptable variability of results between fertilizer laboratories performing metals analysis. A method has been developed using microwave digestion with nitric acid at 200C, followed by inductively coupled plasma-optical emission spectrometry instrument detection, for the elements arsenic, cadmium, cobalt, chromium, molybdenum, nickel, lead, and selenium. The method has been collaboratively studied, and statistical results are here reported. Fourteen collaborators were sent 62 sample materials in a blind duplicate design. Materials represented a broad cross section of fertilizer types, including phosphateore, manufactured phosphate products, N-P-K blends, organic fertilizers, and micro-nutrient materials. As much as possible within the limit of the number of samples, materials were selected from different regions of the United States and the world. Limit of detection (LOD) was determined using synthetic fertilizers consisting of reagent grade chemicals with near zero levels of the non-nutritive elements, analyzed blindly. Samples with high iron content caused the most variability between laboratories. Most samples reasonably above LOD gave HorRat values within the range 0.5 to 2.0, indicating acceptable method performance according to AOAC guidelines for analyses in the mg/kg range. The method is recommended for AOAC Official First Action status.
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Affiliation(s)
- Peter F Kane
- Office of Indiana State Chemist, Purdue University, 175 S. University St, West Lafayette, IN 47907-2063
| | - William L Hall
- The Mosaic Co., 3095 County Rd 640 West, Mulberry, FL 33860
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25
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Goubert E, Altvater M, Rovira MN, Khalilov I, Mazzarino M, Sebastiani A, Schaefer MKE, Rivera C, Pellegrino C. Bumetanide Prevents Brain Trauma-Induced Depressive-Like Behavior. Front Mol Neurosci 2019; 12:12. [PMID: 30804751 PMCID: PMC6370740 DOI: 10.3389/fnmol.2019.00012] [Citation(s) in RCA: 15] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 01/14/2019] [Indexed: 01/24/2023] Open
Abstract
Brain trauma triggers a cascade of deleterious events leading to enhanced incidence of drug resistant epilepsies, depression, and cognitive dysfunctions. The underlying mechanisms leading to these alterations are poorly understood and treatment that attenuates those sequels are not available. Using controlled-cortical impact as an experimental model of brain trauma in adult mice, we found a strong suppressive effect of the sodium-potassium-chloride importer (NKCC1) specific antagonist bumetanide on the appearance of depressive-like behavior. We demonstrate that this alteration in behavior is associated with an impairment of post-traumatic secondary neurogenesis within the dentate gyrus of the hippocampus. The mechanism mediating the effect of bumetanide involves early transient changes in the expression of chloride regulatory proteins and qualitative changes in GABA(A) mediated transmission from hyperpolarizing to depolarizing after brain trauma. This work opens new perspectives in the early treatment of human post-traumatic induced depression. Our results strongly suggest that bumetanide might constitute an efficient prophylactic treatment to reduce neurological and psychiatric consequences of brain trauma.
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Affiliation(s)
- Emmanuelle Goubert
- INSERM, Institute of Mediterranean Neurobiology, Aix-Marseille University, Marseille, France
| | - Marc Altvater
- Department of Anesthesiology and Research Center Translational Neurosciences, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Marie-Noelle Rovira
- INSERM, Institute of Mediterranean Neurobiology, Aix-Marseille University, Marseille, France
| | - Ilgam Khalilov
- INSERM, Institute of Mediterranean Neurobiology, Aix-Marseille University, Marseille, France.,Laboratory of Neurobiology, Kazan Federal University, Kazan, Russia
| | - Morgane Mazzarino
- INSERM, Institute of Mediterranean Neurobiology, Aix-Marseille University, Marseille, France
| | - Anne Sebastiani
- Department of Anesthesiology and Research Center Translational Neurosciences, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Michael K E Schaefer
- Department of Anesthesiology and Research Center Translational Neurosciences, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Claudio Rivera
- INSERM, Institute of Mediterranean Neurobiology, Aix-Marseille University, Marseille, France.,Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Christophe Pellegrino
- INSERM, Institute of Mediterranean Neurobiology, Aix-Marseille University, Marseille, France
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26
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Klopatek S, Rivera C, Gonzalez A, Rotz A, Mitloehner F. 249 Effects of Heat Stress Mitigation Techniques on Feedlot Cattle Performance, Environmental, and Economical Outcomes in a Hot Climate. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | | | - A Rotz
- USDA/Agricultural Research Service,University Park, PA, United States
| | - F Mitloehner
- University of California Davis,Davis, CA, United States
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27
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Pertici V, Pin-Barre C, Rivera C, Pellegrino C, Laurin J, Gigmes D, Trimaille T. Degradable and Injectable Hydrogel for Drug Delivery in Soft Tissues. Biomacromolecules 2018; 20:149-163. [PMID: 30376309 DOI: 10.1021/acs.biomac.8b01242] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Injectable hydrogels are promising platforms for tissue engineering and local drug delivery as they allow minimal invasiveness. We have here developed an injectable and biodegradable hydrogel based on an amphiphilic PNIPAAm- b-PLA- b-PEG- b-PLA- b-PNIPAAm pentablock copolymer synthesized by ring-opening polymerization/nitroxide-mediated polymerization (ROP/NMP) combination. The hydrogel formation at around 30 °C was demonstrated to be mediated by intermicellar bridging through the PEG central block. Such a result was particularly highlighted by the inability of a PEG- b-PLA- b-PNIPAAm triblock analog of the same composition to gelify. The hydrogels degraded through hydrolysis of the PLA esters until complete mass loss due to the diffusion of the recovered PEG and PNIPAAm/micelle based residues in the solution. Interestingly, hydrophobic molecules such as riluzole (neuroprotective drug) or cyanine 5.5 (imaging probe) could be easily loaded in the hydrogels' micelle cores by mixing them with the copolymer solution at room temperature. Drug release was correlated to polymer mass loss. The hydrogel was shown to be cytocompatible (neuronal cells, in vitro) and injectable through a small-gauge needle (in vivo in rats). Thus, this hydrogel platform displays highly attractive features for use in brain/soft tissue engineering as well as in drug delivery.
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Affiliation(s)
- Vincent Pertici
- Aix Marseille Université, CNRS, ICR , F-13397 Marseille , France
| | | | - Claudio Rivera
- Aix Marseille Université, INSERM, INMED , F-13397 Marseille , France
| | | | - Jérôme Laurin
- Aix Marseille Université, CNRS, ISM , F-13397 Marseille , France
| | - Didier Gigmes
- Aix Marseille Université, CNRS, ICR , F-13397 Marseille , France
| | - Thomas Trimaille
- Aix Marseille Université, CNRS, ICR , F-13397 Marseille , France
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28
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Marin-Acevedo J, Gilbert E, Rivera C, Gonzalez-Estrada A. A CASE OF IDIOPATHIC ANAPHYLAXIS: A 4-YEAR ODYSSEY. Ann Allergy Asthma Immunol 2018. [DOI: 10.1016/j.anai.2018.09.270] [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: 10/27/2022]
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29
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Papamichael K, Rakowsky S, Rivera C, Cheifetz AS, Osterman MT. Association Between Serum Infliximab Trough Concentrations During Maintenance Therapy and Biochemical, Endoscopic, and Histologic Remission in Crohn's Disease. Inflamm Bowel Dis 2018; 24:2266-2271. [PMID: 29718327 PMCID: PMC7190934 DOI: 10.1093/ibd/izy132] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [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: 12/07/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND AIM Objective and more rigorous therapeutic outcomes are emerging as novel targets in Crohn's disease (CD). We investigated the association between maintenance serum infliximab trough concentrations and biochemical, endoscopic, or histologic remission in CD. METHODS This retrospective multicenter study involved consecutive CD patients treated with infliximab who had a serum C-reactive protein (CRP) measured within 1 week or endoscopic evaluation within 12 weeks of therapeutic drug monitoring between January 2010 and June 2016. Biochemical remission was defined as a normal CRP (≤5 mg/L). Endoscopic remission was defined as absence of any mucosal break (ulceration or erosion) or for patients with an ileocolonic resection, a Rutgeerts score of ≤i1. Histologic remission was defined as absence of active inflammation. RESULTS Seventy-one CRP levels and 96 colonoscopies from 110 CD patients were evaluated. Based on ROC analyses, infliximab concentration thresholds of 2.2, 9.7, and 9.8 μg/mL were found to be related with biochemical, endoscopic, and histologic remission, respectively. Multiple logistic regression analyses identified infliximab concentration ≥2.2 (OR 6.4; 95% CI, 1.5-27.1; P = 0.011), ≥9.7 (OR 3.6; 95% CI, 1.4-9; P = 0.006) and ≥9.8 μg/mL (OR 3.2; 95% CI, 1.3-7.9; P = 0.011) as variables independently associated with biochemical, endoscopic, and histologic remission, respectively. CONCLUSIONS This study showed that higher maintenance infliximab trough concentrations are associated with more favorable rates of biochemical, endoscopic, or histologic remission in CD patients and that infliximab concentrations may differ based on the treatment goal.
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Affiliation(s)
- Konstantinos Papamichael
- Center for Inflammatory Bowel Diseases, Division of Gastroenterology, Beth-Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA,Address correspondence to: Konstantinos Papamichail, MD, PhD, FEBGH, Harvard Medical School, Beth Israel Deaconess Medical Center, Center for Inflammatory Bowel Diseases, Division of Gastroenterology, 330 Brookline Ave, Boston, MA 02215. E-mail:
| | - Shana Rakowsky
- Center for Inflammatory Bowel Diseases, Division of Gastroenterology, Beth-Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Claudio Rivera
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Adam S Cheifetz
- Center for Inflammatory Bowel Diseases, Division of Gastroenterology, Beth-Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Mark T Osterman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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30
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Ruiz A, Patino LF, Amaya KJ, Gomez JE, Ordonez F, Paternina S, Mercado M, Pachajoa H, Campo R, Coll M, Jimenez R, Matallana A, Zuluaga N, Toro JM, Rivera C. P6266Homozygous familial hypercholesterolemia: A study of 36 cases with phenotype of homozygous familiar hypercholesterolemia in Colombia. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6266] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Ruiz
- Pontifical Xaverian University, Epidemiology, Bogota, Colombia
| | - L F Patino
- Pontifical Xaverian University, Bogota, Colombia
| | - K J Amaya
- Valentech for Life, Bogotá, Colombia
| | - J E Gomez
- Fundaciόn Valle de Lili, Cali, Colombia
| | - F Ordonez
- Foundation Cardioinfantil, Bogota, Colombia
| | - S Paternina
- Rehabilitar De Sucre IPS, Sincelejo, Colombia
| | - M Mercado
- Rehabilitar De Sucre IPS, Sincelejo, Colombia
| | - H Pachajoa
- Centro De Investigaciones en Anomalías congénitas y enfermedades raras. Universidad Icesi, Cali, Colombia
| | - R Campo
- Fundaciόn Cardiovascular, Bucaramanga, Colombia
| | - M Coll
- Fundaciόn Hospital de la Misericordia. Universidad Nacional de Colombia, Bogota, Colombia
| | - R Jimenez
- Hospital Tomas Uribe, Tulua, Colombia
| | | | - N Zuluaga
- Hospital Universitario San Vicente Fundaciόn, Medellín, Colombia
| | - J M Toro
- Fundaciόn Clinica Noel, Medellin, Colombia
| | - C Rivera
- Foundation Cardioinfantil, Bogota, Colombia
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31
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Finamore P, Scarlata S, Laudisio A, Galdi F, Pipita M, Chiarella I, Giua R, Cortese L, Rivera C, Antonelli Incalzi R. Occurrence of nocturia is not mediated by nocturnal hypoxia length and severity in patients with sleep-disordered breathing. Sleep Med 2018; 45:69-73. [DOI: 10.1016/j.sleep.2018.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/12/2018] [Accepted: 01/31/2018] [Indexed: 01/23/2023]
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32
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Papamichael K, Rakowsky S, Rivera C, Cheifetz AS, Osterman MT. Infliximab trough concentrations during maintenance therapy are associated with endoscopic and histologic healing in ulcerative colitis. Aliment Pharmacol Ther 2018; 47:478-484. [PMID: 29210094 PMCID: PMC6535226 DOI: 10.1111/apt.14458] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [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: 08/28/2017] [Revised: 09/14/2017] [Accepted: 11/15/2017] [Indexed: 12/18/2022]
Abstract
BACKGROUND Endoscopic and histologic healing are emerging as new therapeutic goals in ulcerative colitis (UC), as these endpoints are associated with less relapse, hospitalization and colectomy. AIM To investigate the association of serum infliximab trough concentrations during maintenance therapy with endoscopic or histologic healing in UC. METHODS In this multi-center retrospective cohort study, we included consecutive patients with moderate-to-severe UC on infliximab maintenance therapy who had an endoscopic evaluation and underwent therapeutic drug monitoring within three months of the colonoscopy, between February 2008 and March 2016. Per event analysis was performed. Endoscopic healing was defined as Mayo endoscopic sub-score of ≤1. Histologic healing was defined as no or only focal mild active inflammation. RESULTS Seventy colonoscopies from 56 patients were evaluated. Infliximab trough concentrations (median [interquartile range]) were significantly higher in patients with endoscopic (11.3 [7.6-14.5] vs 6.3 [0-9.8] μg/mL, P < .001) or histologic (11.1 [6.7-14.5] vs 6.7 [0-9.9] μg/mL, P = .002) healing, respectively, compared to patients without healing. Receiver-operating characteristic analyses identified infliximab trough concentration thresholds of 7.5 (area under the curve [AUC]: 0.758) and 10.5 (AUC: 0.721) μg/mL to be associated with endoscopic and histologic healing, respectively. Multiple logistic regression analysis identified infliximab trough concentration ≥7.5 (P = .013; odds ratio [OR]: 4.3; 95% confidence intervals [CI]: 1.4-13.3) and ≥10.5 μg/mL (P = .013; OR: 3.8; 95% CI: 1.3-11) as independent factors associated with endoscopic and histologic healing, respectively. CONCLUSIONS This study demonstrated that infliximab trough concentrations during maintenance therapy are associated with endoscopic and histologic healing in patients with UC.
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Affiliation(s)
- Konstantinos Papamichael
- Center for Inflammatory Bowel Diseases, Division of Gastroenterology, Beth-Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Shana Rakowsky
- Department of Internal Medicine, Beth-Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Claudio Rivera
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Adam S. Cheifetz
- Center for Inflammatory Bowel Diseases, Division of Gastroenterology, Beth-Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Mark T. Osterman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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33
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Achuta VS, Möykkynen T, Peteri UK, Turconi G, Rivera C, Keinänen K, Castrén ML. Functional changes of AMPA responses in human induced pluripotent stem cell-derived neural progenitors in fragile X syndrome. Sci Signal 2018; 11:11/513/eaan8784. [PMID: 29339535 DOI: 10.1126/scisignal.aan8784] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Altered neuronal network formation and function involving dysregulated excitatory and inhibitory circuits are associated with fragile X syndrome (FXS). We examined functional maturation of the excitatory transmission system in FXS by investigating the response of FXS patient-derived neural progenitor cells to the glutamate analog (AMPA). Neural progenitors derived from induced pluripotent stem cell (iPSC) lines generated from boys with FXS had augmented intracellular Ca2+ responses to AMPA and kainate that were mediated by Ca2+-permeable AMPA receptors (CP-AMPARs) lacking the GluA2 subunit. Together with the enhanced differentiation of glutamate-responsive cells, the proportion of CP-AMPAR and N-methyl-d-aspartate (NMDA) receptor-coexpressing cells was increased in human FXS progenitors. Differentiation of cells lacking GluA2 was also increased and paralleled the increased inward rectification in neural progenitors derived from Fmr1-knockout mice (the FXS mouse model). Human FXS progenitors had increased the expression of the precursor and mature forms of miR-181a, a microRNA that represses translation of the transcript encoding GluA2. Blocking GluA2-lacking, CP-AMPARs reduced the neurite length of human iPSC-derived control progenitors and further reduced the shortened length of neurites in human FXS progenitors, supporting the contribution of CP-AMPARs to the regulation of progenitor differentiation. Furthermore, we observed reduced expression of Gria2 (the GluA2-encoding gene) in the frontal lobe of FXS mice, consistent with functional changes of AMPARs in FXS. Increased Ca2+ influx through CP-AMPARs may increase the vulnerability and affect the differentiation and migration of distinct cell populations, which may interfere with normal circuit formation in FXS.
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Affiliation(s)
- Venkat Swaroop Achuta
- Department of Physiology, Faculty of Medicine, University of Helsinki, P.O. Box 63, FIN-00014 Helsinki, Finland
| | - Tommi Möykkynen
- Division of Biochemistry and Biotechnology, Department of Biosciences, University of Helsinki, P.O. Box 56, FIN-00014, Helsinki, Finland
| | - Ulla-Kaisa Peteri
- Department of Physiology, Faculty of Medicine, University of Helsinki, P.O. Box 63, FIN-00014 Helsinki, Finland
| | - Giorgio Turconi
- Department of Physiology, Faculty of Medicine, University of Helsinki, P.O. Box 63, FIN-00014 Helsinki, Finland
| | - Claudio Rivera
- Neuroscience Center, University of Helsinki, P.O. Box 56, FIN-00014 Helsinki, Finland.,Institut de Neurobiologie de la Méditerranée, INSERM, Unité 901, 13009 Marseille, France.,Aix-Marseille Université, Unité Mixte de Recherche 901, 13273 Marseille, France
| | - Kari Keinänen
- Division of Biochemistry and Biotechnology, Department of Biosciences, University of Helsinki, P.O. Box 56, FIN-00014, Helsinki, Finland
| | - Maija L Castrén
- Department of Physiology, Faculty of Medicine, University of Helsinki, P.O. Box 63, FIN-00014 Helsinki, Finland. .,Rinnekoti Foundation, Rinnekodintie 10, FIN-02980 Espoo, Finland.,Autism Foundation, Kuortaneenkatu 7B, FIN-00520 Helsinki, Finland
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Markkanen M, Ludwig A, Khirug S, Pryazhnikov E, Soni S, Khiroug L, Delpire E, Rivera C, Airaksinen MS, Uvarov P. Implications of the N-terminal heterogeneity for the neuronal K-Cl cotransporter KCC2 function. Brain Res 2017; 1675:87-101. [PMID: 28888841 DOI: 10.1016/j.brainres.2017.08.034] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 02/02/2017] [Revised: 08/25/2017] [Accepted: 08/30/2017] [Indexed: 12/16/2022]
Abstract
The neuron-specific K-Cl cotransporter KCC2 maintains the low intracellular chloride concentration required for the fast hyperpolarizing responses of the inhibitory neurotransmitters γ-aminobutyric acid (GABA) and glycine. The two KCC2 isoforms, KCC2a and KCC2b differ by their N-termini as a result of alternative promoter usage. Whereas the role of KCC2b in mediating the chloride transport is unequivocal, the physiological role of KCC2a in neurons has remained obscure. We show that KCC2a isoform can decrease the intracellular chloride concentration in cultured neurons and attenuate calcium responses evoked by application of the GABAA receptor agonist muscimol. While the biotinylation assay detected both KCC2 isoforms at the cell surface of cultured neurons, KCC2a was not detected at the plasma membrane in immunostainings, suggesting that the N-terminal KCC2a epitope is masked. Confirming this hypothesis, KCC2a surface expression was detected by the C-terminal KCC2 pan antibody but not by the N-terminal KCC2a antibody in KCC2b-deficient neurons. One possible cause for the epitope masking is the binding site of Ste20-related proline-alanine-rich kinase (SPAK) in the KCC2a N-terminus. SPAK, a known regulator of K-Cl cotransporters, was co-immunoprecipitated in a complex with KCC2a but not KCC2b isoform. Moreover, SPAK overexpression decreased the transport activity of KCC2a but not that of KCC2b, as revealed by rubidium flux assay in HEK293 cells. Thus, our data indicate that both KCC2 isoforms perform as chloride cotransporters in neuronal cells, while their N-terminal heterogeneity could play an important role in fine-tuning of the K-Cl transport activity.
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Affiliation(s)
- Marika Markkanen
- Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | | | | | | | - Shetal Soni
- Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Leonard Khiroug
- Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Eric Delpire
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Claudio Rivera
- Neuroscience Center, University of Helsinki, Helsinki, Finland; INSERM, Institut de Neurobiologie de la Méditerranée (INMED), Marseille, France; Aix-Marseille Université, UMR901 Marseille, France
| | - Matti S Airaksinen
- Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
| | - Pavel Uvarov
- Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
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Friedel P, Ludwig A, Pellegrino C, Agez M, Jawhari A, Rivera C, Medina I. A Novel View on the Role of Intracellular Tails in Surface Delivery of the Potassium-Chloride Cotransporter KCC2. eNeuro 2017; 4:ENEURO.0055-17.2017. [PMID: 28785725 PMCID: PMC5520751 DOI: 10.1523/eneuro.0055-17.2017] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 06/20/2017] [Accepted: 07/04/2017] [Indexed: 01/06/2023] Open
Abstract
A plethora of neurological disorders are associated with alterations in the expression and localization of potassium-chloride cotransporter type 2 (KCC2), making KCC2 a critical player in neuronal function and an attractive target for therapeutic treatment. The activity of KCC2 is determined primarily by the rates of its surface insertion and internalization. Currently the domains of KCC2 dictating its trafficking and endocytosis are unknown. Here, using live-cell immunolabeling and biotinylation of KCC2 proteins expressed in murine neuroblastoma N2a cells, human embryonic kidney 293 cells, or primary cultures of rat hippocampal neurons, we identified a novel role for the intracellular N and C termini in differentially regulating KCC2 surface expression. We report that the N terminus is required for KCC2 insertion into the plasma membrane, whereas the C terminus is critical for the membrane stability of KCC2. Our results provide novel insights into the structure-function role of specific KCC2 domains and open perspectives in exploring structural organization of this protein.
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Affiliation(s)
- Perrine Friedel
- INMED, Aix-Marseille University, INSERM, Marseille 13273, France
| | - Anastasia Ludwig
- Neuroscience Center, University of Helsinki, Helsinki 00100, Finland
| | | | | | | | - Claudio Rivera
- INMED, Aix-Marseille University, INSERM, Marseille 13273, France
- Neuroscience Center, University of Helsinki, Helsinki 00100, Finland
| | - Igor Medina
- INMED, Aix-Marseille University, INSERM, Marseille 13273, France
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Rivera C, Jones-Herrera C, Vargas P, Venegas B, Droguett D. Oral diseases: a 14-year experience of a Chilean institution with a systematic review from eight countries. Med Oral Patol Oral Cir Bucal 2017; 22:e297-e306. [PMID: 28390130 PMCID: PMC5432078 DOI: 10.4317/medoral.21665] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 02/02/2017] [Indexed: 11/10/2022] Open
Abstract
Background Retrospective studies to assess the distribution of oral diseases (ODs) are helpful in estimating the prevalence of oral diagnoses in the population, and thus help in preventive and curative services. Prevalence and frequency data for ODs are available from many countries, but information from Chile is scarce. Material and Methods This study investigated the frequency of ODs in a Chilean population. For this, we included all patients treated at the University of Talca (UTALCA, Chile) between 2001 and 2014. Patient characteristics were retrieved from medical files. To contextualize our results, we conducted a systematic review (SystRev) using Publish or Perish software (PoP), Google Scholar and MEDLINE/PubMed. Results One hundred sixty-six ODs were diagnosed, and the most prevalent groups were soft tissue tumours, epithelial pathology and salivary gland pathology. Individually, irritation fibroma, oral lichen planus (OLP) and mucocele were the most common diagnoses. ODs frequently affected unspecified parts of the mouth (including cheek, vestibule and retromolar area), gum, lips, tongue and palate. In the SystRev, the more studied diagnoses were leukoplakia, OLP and recurrent aphthous stomatitis; prevalent lesions included Fordyce’s spots, recurrent aphthous stomatitis and fissured tongue. Chilean patients and SistRev shared almost all ODs. Conclusions The results reflect ODs diagnosed in a specialized service of oral pathology and medicine in Chile and will allow the establishment of preventive/curative policies, adequate health services and dentistry curriculum. Key words:Stomatognathic diseases, mouth diseases, oral mucosal lesions, epidemiology, Chilean population, retrospective cohort study.
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Affiliation(s)
- C Rivera
- University of Talca, Lircay Av. S/N, Talca, Chile, Zip code 3460000,
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Sánchez B, Mroczkowski AL, Liao LC, Cooper AC, Rivera C, DuBois DL. Mentoring as a Mediator or Moderator of the Association between Racial Discrimination and Coping Efficacy in Urban, Low-Income Latina/o Youth. Am J Community Psychol 2017; 59:15-24. [PMID: 28188650 DOI: 10.1002/ajcp.12114] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The aim of this study was to examine the associations among mentoring relationship quality (i.e., relational and instrumental quality), racial discrimination and coping efficacy with racial discrimination. Three social support models were tested, including the stress buffering, support mobilization, and support deterioration models. Participants were 257 urban, low-income Latina/o high school students, who completed surveys in both 9th and 10th grades. While controlling for gender and coping efficacy with discrimination in 9th grade, results supported the social support deterioration model. Specifically, there was a significant indirect effect of racial discrimination in 9th grade on coping efficacy in 10th grade through instrumental mentoring quality. As racial discrimination increased, mentoring quality decreased and then coping efficacy decreased. We also found that more racial discrimination in 9th grade was significantly associated with lower coping efficacy in 10th grade, and higher instrumental mentoring quality in 9th grade was significantly associated with higher coping efficacy in 10th grade, while controlling for gender and coping efficacy in 9th grade. Implications and recommendations for future research are discussed.
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Affiliation(s)
| | | | | | | | - Claudio Rivera
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
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Kourdougli N, Pellegrino C, Renko JM, Khirug S, Chazal G, Kukko-Lukjanov TK, Lauri SE, Gaiarsa JL, Zhou L, Peret A, Castrén E, Tuominen RK, Crépel V, Rivera C. Depolarizing γ-aminobutyric acid contributes to glutamatergic network rewiring in epilepsy. Ann Neurol 2017; 81:251-265. [PMID: 28074534 DOI: 10.1002/ana.24870] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 01/03/2017] [Accepted: 01/03/2017] [Indexed: 12/16/2023]
Abstract
OBJECTIVE Rewiring of excitatory glutamatergic neuronal circuits is a major abnormality in epilepsy. Besides the rewiring of excitatory circuits, an abnormal depolarizing γ-aminobutyric acidergic (GABAergic) drive has been hypothesized to participate in the epileptogenic processes. However, a remaining clinically relevant question is whether early post-status epilepticus (SE) evoked chloride dysregulation is important for the remodeling of aberrant glutamatergic neuronal circuits. METHODS Osmotic minipumps were used to infuse intracerebrally a specific inhibitor of depolarizing GABAergic transmission as well as a functionally blocking antibody toward the pan-neurotrophin receptor p75 (p75NTR ). The compounds were infused between 2 and 5 days after pilocarpine-induced SE. Immunohistochemistry for NKCC1, KCC2, and ectopic recurrent mossy fiber (rMF) sprouting as well as telemetric electroencephalographic and electrophysiological recordings were performed at day 5 and 2 months post-SE. RESULTS Blockade of NKCC1 after SE with the specific inhibitor bumetanide restored NKCC1 and KCC2 expression, normalized chloride homeostasis, and significantly reduced the glutamatergic rMF sprouting within the dentate gyrus. This mechanism partially involves p75NTR signaling, as bumetanide application reduced SE-induced p75NTR expression and functional blockade of p75NTR decreased rMF sprouting. The early transient (3 days) post-SE infusion of bumetanide reduced rMF sprouting and recurrent seizures in the chronic epileptic phase. INTERPRETATION Our findings show that early post-SE abnormal depolarizing GABA and p75NTR signaling fosters a long-lasting rearrangement of glutamatergic network that contributes to the epileptogenic process. This finding defines promising and novel targets to constrain reactive glutamatergic network rewiring in adult epilepsy. Ann Neurol 2017;81:251-265.
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Affiliation(s)
- Nazim Kourdougli
- Inserm Unit 901, Inmed, Marseille, France
- Mixed Unit of Research S901, Aix-Marseille University, Marseille, France
| | - Christophe Pellegrino
- Inserm Unit 901, Inmed, Marseille, France
- Mixed Unit of Research S901, Aix-Marseille University, Marseille, France
| | - Juho-Matti Renko
- Division of Pharmacology and Pharmacotherapy, University of Helsinki, Helsinki, Finland
| | | | - Geneviève Chazal
- Inserm Unit 901, Inmed, Marseille, France
- Mixed Unit of Research S901, Aix-Marseille University, Marseille, France
| | | | - Sari E Lauri
- Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Jean-Luc Gaiarsa
- Inserm Unit 901, Inmed, Marseille, France
- Mixed Unit of Research S901, Aix-Marseille University, Marseille, France
| | - Liang Zhou
- Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Angélique Peret
- Inserm Unit 901, Inmed, Marseille, France
- Mixed Unit of Research S901, Aix-Marseille University, Marseille, France
| | - Eero Castrén
- Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Raimo K Tuominen
- Division of Pharmacology and Pharmacotherapy, University of Helsinki, Helsinki, Finland
| | - Valérie Crépel
- Inserm Unit 901, Inmed, Marseille, France
- Mixed Unit of Research S901, Aix-Marseille University, Marseille, France
| | - Claudio Rivera
- Inserm Unit 901, Inmed, Marseille, France
- Mixed Unit of Research S901, Aix-Marseille University, Marseille, France
- Neuroscience Center, University of Helsinki, Helsinki, Finland
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Ludwig A, Rivera C, Uvarov P. A noninvasive optical approach for assessing chloride extrusion activity of the K-Cl cotransporter KCC2 in neuronal cells. BMC Neurosci 2017; 18:23. [PMID: 28143398 PMCID: PMC5286847 DOI: 10.1186/s12868-017-0336-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 02/06/2016] [Accepted: 01/12/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Cation-chloride cotransporters (CCCs) are indispensable for maintaining chloride homeostasis in multiple cell types, but K-Cl cotransporter KCC2 is the only CCC member with an exclusively neuronal expression in mammals. KCC2 is critical for rendering fast hyperpolarizing responses of ionotropic γ-aminobutyric acid and glycine receptors in adult neurons, for neuronal migration in the developing central nervous system, and for the formation and maintenance of small dendritic protrusions-dendritic spines. Deficit in KCC2 expression and/or activity is associated with epilepsy and neuropathic pain, and effective strategies are required to search for novel drugs augmenting KCC2 function. RESULTS We revised current methods to develop a noninvasive optical approach for assessing KCC2 transport activity using a previously characterized genetically encoded chloride sensor. Our protocol directly assesses dynamics of KCC2-mediated chloride efflux and allows measuring genuine KCC2 activity with good spatial and temporal resolution. As a proof of concept, we used this approach to compare transport activities of the two known KCC2 splice isoforms, KCC2a and KCC2b, in mouse neuronal Neuro-2a cells. CONCLUSIONS Our noninvasive optical protocol proved to be efficient for assessment of furosemide-sensitive chloride fluxes. Transport activities of the N-terminal splice isoforms KCC2a and KCC2b obtained by the novel approach matched to those reported previously using standard methods for measuring chloride fluxes.
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Affiliation(s)
- Anastasia Ludwig
- Neuroscience Center, University of Helsinki, Helsinki, Finland
- École Normale Supérieure, Institut de Biologie de l’ENS (IBENS), INSERM U1024, CNRS 8197, Paris, France
| | - Claudio Rivera
- Neuroscience Center, University of Helsinki, Helsinki, Finland
- INSERM U901, Institut de Neurobiologie de la Méditerranée (INMED), Marseille, France
- UMR S901, Aix-Marseille Université, Marseille, France
| | - Pavel Uvarov
- Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Biosciences and Neuroscience Center, University of Helsinki, Helsinki, Finland
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Riffault B, Kourdougli N, Dumon C, Ferrand N, Buhler E, Schaller F, Chambon C, Rivera C, Gaiarsa JL, Porcher C. Pro-Brain-Derived Neurotrophic Factor (proBDNF)-Mediated p75NTR Activation Promotes Depolarizing Actions of GABA and Increases Susceptibility to Epileptic Seizures. Cereb Cortex 2016; 28:510-527. [DOI: 10.1093/cercor/bhw385] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 11/17/2016] [Indexed: 12/16/2022] Open
Affiliation(s)
- Baptiste Riffault
- Aix-Marseille University, Département de Biologie, Parc Scientifique de Luminy, 13273 Marseille, France
- INSERM—Institut National de la Santé et de la Recherche Médicale, Unité 901, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED—Institut de Neurobiologie de la Méditerranée, Parc Scientifique de Luminy, 13273 Marseille, France
| | - Nazim Kourdougli
- Aix-Marseille University, Département de Biologie, Parc Scientifique de Luminy, 13273 Marseille, France
- INSERM—Institut National de la Santé et de la Recherche Médicale, Unité 901, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED—Institut de Neurobiologie de la Méditerranée, Parc Scientifique de Luminy, 13273 Marseille, France
| | - Camille Dumon
- Aix-Marseille University, Département de Biologie, Parc Scientifique de Luminy, 13273 Marseille, France
- INSERM—Institut National de la Santé et de la Recherche Médicale, Unité 901, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED—Institut de Neurobiologie de la Méditerranée, Parc Scientifique de Luminy, 13273 Marseille, France
| | - Nadine Ferrand
- Aix-Marseille University, Département de Biologie, Parc Scientifique de Luminy, 13273 Marseille, France
- INSERM—Institut National de la Santé et de la Recherche Médicale, Unité 901, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED—Institut de Neurobiologie de la Méditerranée, Parc Scientifique de Luminy, 13273 Marseille, France
| | - Emmanuelle Buhler
- Aix-Marseille University, Département de Biologie, Parc Scientifique de Luminy, 13273 Marseille, France
- Plateforme Post-Génomique, INMED, 13273 Marseille, France
| | - Fabienne Schaller
- Aix-Marseille University, Département de Biologie, Parc Scientifique de Luminy, 13273 Marseille, France
- Plateforme Post-Génomique, INMED, 13273 Marseille, France
| | - Caroline Chambon
- Aix-Marseille University, Département de Biologie, NIA, UMR 7260 CNRS, 13331 cedex 03, Marseille, France
| | - Claudio Rivera
- Aix-Marseille University, Département de Biologie, Parc Scientifique de Luminy, 13273 Marseille, France
- INSERM—Institut National de la Santé et de la Recherche Médicale, Unité 901, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED—Institut de Neurobiologie de la Méditerranée, Parc Scientifique de Luminy, 13273 Marseille, France
| | - Jean-Luc Gaiarsa
- Aix-Marseille University, Département de Biologie, Parc Scientifique de Luminy, 13273 Marseille, France
- INSERM—Institut National de la Santé et de la Recherche Médicale, Unité 901, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED—Institut de Neurobiologie de la Méditerranée, Parc Scientifique de Luminy, 13273 Marseille, France
| | - Christophe Porcher
- Aix-Marseille University, Département de Biologie, Parc Scientifique de Luminy, 13273 Marseille, France
- INSERM—Institut National de la Santé et de la Recherche Médicale, Unité 901, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED—Institut de Neurobiologie de la Méditerranée, Parc Scientifique de Luminy, 13273 Marseille, France
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Prado F, González M, Hernández M, Guzmán C, Chaulon M, Cóbar S, Donis M, Rivera C. Preliminary study of total levels of dissolved arsenic in drinking water of different zones of the Municipality of Guatemala, Department of Guatemala. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.313] [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: 11/25/2022]
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Hernández M, González M, Guzmán C, Chaulon M, Donis M, Cóbar S, Prado F, Rivera C. Drug intoxications reported by the Laboratory of Toxicology of the Department of Toxicology of the University of San Carlos of Guatemala from 2011 to 2015. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.593] [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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Yuryev M, Ferreira MPA, Balasubramanian V, Correia AMR, Mäkilä EM, Jokinen V, Andriichuk L, Kemell M, Salonen JJ, Hirvonen JT, Santos HA, Rivera C. Active diffusion of nanoparticles of maternal origin within the embryonic brain. Nanomedicine (Lond) 2016; 11:2471-81. [DOI: 10.2217/nnm-2016-0207] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Aim: To investigate porous silicon (PSi) nanoparticles (NPs) behavior in the embryonic brain. Materials & methods: Fluorescently labeled PSi NPs were injected into the embryonic brains intraventricularly and to the mother intravenously (iv.). Brain histology from different time points up to 3 days was analyzed and live brains imaged with two-photon microscopy. Results: PSi NPs were able to penetrate 80% of the embryonic cortical depth. Particle motility was confirmed in real-time in vivo. PSi NPs were able to penetrate the embryonic cortex after either iv. maternal or intraventricular injection. No developmental of macromorphological changes or increased cell apoptosis was observed. Conclusion: PSi NPs penetrate deep in the brain tissues of embryos after intraventricular injection and after iv. injection to the mother.
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Affiliation(s)
- Mikhail Yuryev
- Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland
| | - Mónica PA Ferreira
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Vimalkumar Balasubramanian
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Alexandra MR Correia
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Ermei M Mäkilä
- Laboratory of Industrial Physics, Department of Physics & Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Ville Jokinen
- Aalto University, School of Chemical Technology, FI-02150 Espoo, Finland
| | - Liliia Andriichuk
- Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland
| | - Marianna Kemell
- Department of Chemistry, University of Helsinki, PO Box 55, FI-00014 Helsinki, Finland
| | - Jarno J Salonen
- Laboratory of Industrial Physics, Department of Physics & Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Jouni T Hirvonen
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Hélder A Santos
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Claudio Rivera
- Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland
- Institut de Neurobiologie de la Méditerranée, Institut National de la Santé et de la Recherche Médicale Unité 901, 13009 Marseille, France Aix-Marseille Université, Unité Mixte de Recherche 901, 13273 Marseille, France
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Roussa E, Speer JM, Chudotvorova I, Khakipoor S, Smirnov S, Rivera C, Krieglstein K. The membrane trafficking and functionality of the K+-Cl- co-transporter KCC2 is regulated by TGF-β2. J Cell Sci 2016; 129:3485-98. [PMID: 27505893 PMCID: PMC5047681 DOI: 10.1242/jcs.189860] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 08/02/2016] [Indexed: 02/02/2023] Open
Abstract
Functional activation of the neuronal K(+)-Cl(-) co-transporter KCC2 (also known as SLC12A5) is a prerequisite for shifting GABAA responses from depolarizing to hyperpolarizing during development. Here, we introduce transforming growth factor β2 (TGF-β2) as a new regulator of KCC2 membrane trafficking and functional activation. TGF-β2 controls membrane trafficking, surface expression and activity of KCC2 in developing and mature mouse primary hippocampal neurons, as determined by immunoblotting, immunofluorescence, biotinylation of surface proteins and KCC2-mediated Cl(-) extrusion. We also identify the signaling pathway from TGF-β2 to cAMP-response-element-binding protein (CREB) and Ras-associated binding protein 11b (Rab11b) as the underlying mechanism for TGF-β2-mediated KCC2 trafficking and functional activation. TGF-β2 increases colocalization and interaction of KCC2 with Rab11b, as determined by 3D stimulated emission depletion (STED) microscopy and co-immunoprecipitation, respectively, induces CREB phosphorylation, and enhances Rab11b gene expression. Loss of function of either CREB1 or Rab11b suppressed TGF-β2-dependent KCC2 trafficking, surface expression and functionality. Thus, TGF-β2 is a new regulatory factor for KCC2 functional activation and membrane trafficking, and a putative indispensable molecular determinant for the developmental shift of GABAergic transmission.
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Affiliation(s)
- Eleni Roussa
- Institute of Anatomy and Cell Biology, Department of Molecular Embryology, Faculty of Medicine, University of Freiburg, Albertstrasse 17, Freiburg D-79104, Germany Institute of Anatomy and Cell Biology, Department of Neuroanatomy, Faculty of Medicine, University of Freiburg, Albertstrasse 17, Freiburg D-79104, Germany
| | - Jan Manuel Speer
- Institute of Anatomy and Cell Biology, Department of Molecular Embryology, Faculty of Medicine, University of Freiburg, Albertstrasse 17, Freiburg D-79104, Germany
| | - Ilona Chudotvorova
- Institute of Anatomy and Cell Biology, Department of Molecular Embryology, Faculty of Medicine, University of Freiburg, Albertstrasse 17, Freiburg D-79104, Germany
| | - Shokoufeh Khakipoor
- Institute of Anatomy and Cell Biology, Department of Molecular Embryology, Faculty of Medicine, University of Freiburg, Albertstrasse 17, Freiburg D-79104, Germany
| | - Sergei Smirnov
- Institute of Biotechnology, University of Helsinki, Viikinkaari 9, Helsinki FIN-00014, Finland
| | - Claudio Rivera
- Institute of Biotechnology, University of Helsinki, Viikinkaari 9, Helsinki FIN-00014, Finland
| | - Kerstin Krieglstein
- Institute of Anatomy and Cell Biology, Department of Molecular Embryology, Faculty of Medicine, University of Freiburg, Albertstrasse 17, Freiburg D-79104, Germany
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Magalhães AC, Rivera C. NKCC1-Deficiency Results in Abnormal Proliferation of Neural Progenitor Cells of the Lateral Ganglionic Eminence. Front Cell Neurosci 2016; 10:200. [PMID: 27582690 PMCID: PMC4987357 DOI: 10.3389/fncel.2016.00200] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 06/20/2016] [Accepted: 08/02/2016] [Indexed: 12/14/2022] Open
Abstract
The proliferative pool of neural progenitor cells is maintained by exquisitely controlled mechanisms for cell cycle regulation. The Na-K-Cl cotransporter (NKCC1) is important for regulating cell volume and the proliferation of different cell types in vitro. NKCC1 is expressed in ventral telencephalon of embryonic brains suggesting a potential role in neural development of this region. The ventral telencephalon is a major source for both interneuron and oligodendrocyte precursor cells. Whether NKCC1 is involved in the proliferation of these cell populations remains unknown. In order to assess this question, we monitored several markers for neural, neuronal, and proliferating cells in wild-type (WT) and NKCC1 knockout (KO) mouse brains. We found that NKCC1 was expressed in neural progenitor cells from the lateral ganglionic eminence (LGE) at E12.5. Mice lacking NKCC1 expression displayed reduced phospho-Histone H3 (PH3)-labeled mitotic cells in the ventricular zone (VZ) and reduced cell cycle reentry. Accordingly, we found a significant reduction of Sp8-labeled immature interneurons migrating from the dorsal LGE in NKCC1-deficient mice at a later developmental stage. Interestingly, at E14.5, NKCC1 regulated also the formation of Olig2-labeled oligodendrocyte precursor cells. Collectively, these findings show that NKCC1 serves in vivo as a modulator of the cell cycle decision in the developing ventral telencephalon at the early stage of neurogenesis. These results present a novel mechanistic avenue to be considered in the recent proposed involvement of chloride transporters in a number of developmentally related diseases, such as epilepsy, autism, and schizophrenia.
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Affiliation(s)
| | - Claudio Rivera
- Neuroscience Center, University of HelsinkiHelsinki, Finland; Aix-Marseille University, UMR S901Marseille, France; INSERM U901, Institut de Neurobiologie de la Méditerranée (INMED)Marseille, France
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Pundhir P, Tuda C, Vincentelli C, Morlote D, Rivera C. Scolecobasidium granulomatous pneumonia and abscess - an emerging opportunistic fungal pathogen: a case report. Int J STD AIDS 2016; 28:94-96. [PMID: 27105660 DOI: 10.1177/0956462416646688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 11/16/2022]
Abstract
Scolecobasidium sp. are commensal soil and water thermophilic dematiaceous fungi. They are commonly isolated as contaminants from respiratory secretions due to their abundant presence in water supplies, but they are also rare yet emerging culprits producing severe opportunistic infections in immunocompromised individuals. The most consistent presentations reported in literature are life-threatening pulmonary and cerebral granulomatous lesions.
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Affiliation(s)
- P Pundhir
- Mount Sinai Medical Center, Miami Beach, FL, USA
| | - C Tuda
- Mount Sinai Medical Center, Miami Beach, FL, USA
| | | | - D Morlote
- Mount Sinai Medical Center, Miami Beach, FL, USA
| | - C Rivera
- Mount Sinai Medical Center, Miami Beach, FL, USA
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Riquet M, Pricopi C, Rivera C, Badia A, Arame A, Dujon A, Foucault C, Le Pimpec Barthes F, Fabre E. [Lung cancer measuring 1cm or less: A miniature subset requiring surgery]. Rev Pneumol Clin 2016; 72:171-178. [PMID: 27113613 DOI: 10.1016/j.pneumo.2015.12.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/23/2015] [Accepted: 12/04/2015] [Indexed: 06/05/2023]
Abstract
INTRODUCTION Lung cancer measuring 1cm or less has an apparently very good outcome. However, the characteristics permitting their oncological management are unappreciated. PATIENT AND METHOD We reviewed 187 patients with such a cancer (145 men and 42 women, mean age 60.2years) and studied the type of surgery performed, the pTNM, and the histological features. RESULTS Surgery (19 wedge-resections, 12 segmentectomies, 136 lobectomies, 20 pneumonectomies) was complete (R0) in 97.3%. The tumors, each precisely defined among 98 adenocarcinomas (52.4%), 83 squamous cell carcinomas (44.4%), and 6 others, measured 1mm to 10mm:<5mm (n=41), 6 to 9mm (n=43), and 10mm (n=103). There were 161 pT1 (86.1%), 22 pT2 (11.8%) and 4 pT3; 148 pN0 (79.6%), 18 pN1 (9.7%) and 20 pN2 (10.7%). pN1 and pN2 were present in tumors<5mm (12/41, 29.3%) as well as in the others (26/146, 17.8% P=0.11). Histological examination frequently discovered visceral pleura involvement (tumors:<5mm 12.2% (5/41), 6 to 9mm 7% (3/43), 10mm 13.6% (14/103), P=0.53) and lympho-vascular invasion (12.9%). Five-year survival rate (66.4%) was adversely influenced by age, type of resection, pN and histological features. The survival rate was not better in tumor<5mm. CONCLUSION Surgical resection allows the local control of lung cancers<1cm and their complete histological study, a key issue in the therapy of the future, which renders surgery an absolute must even in very small tumors.
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Affiliation(s)
- M Riquet
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France.
| | - C Pricopi
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - C Rivera
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - A Badia
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - A Arame
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - A Dujon
- Service de chirurgie thoracique, centre médico-chirurgical du Cèdre, 76230 Bois-Guillaume, France
| | - C Foucault
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - F Le Pimpec Barthes
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - E Fabre
- Service d'oncologie médicale, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
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Rivera C, Rivera S, Fabre E, Pricopi C, Le Pimpec-Barthes F, Riquet M. [Consequences of tobacco smoking on lung cancer treatments]. Rev Pneumol Clin 2016; 72:136-141. [PMID: 25727658 DOI: 10.1016/j.pneumo.2014.11.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 11/10/2014] [Accepted: 11/18/2014] [Indexed: 06/04/2023]
Abstract
In France, in 2010, tobacco induced 81% of deaths by lung cancer corresponding to about 28,000 deaths. Continued smoking after diagnosis has a significant impact on treatment. In patients with lung cancer, the benefits of smoking cessation are present at any stage of disease. For early stages, smoking cessation decreases postoperative morbidity, reduces the risk of second cancer and improves survival. Previous to surgery, smoking cessation of at least six to eight weeks or as soon as possible is recommended in order to reduce the risk of infectious complications. Tobacco could alter the metabolism of certain chemotherapies and targeted therapies, such as tyrosine kinase inhibitors of the EGF receptor, through an interaction with P450 cytochrome. Toxicity of radiations could be lower in patients with lung cancer who did not quit smoking before treatment. For patients treated by radio-chemotherapy, overall survival seems to be better in former smokers but no difference is observed in terms of recurrence-free survival. For advanced stages, smoking cessation enhances patients' quality of life. Smoking cessation should be considered as full part of lung cancer treatment whatever the stage of disease.
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Affiliation(s)
- C Rivera
- Service de chirurgie thoracique et transplantation pulmonaire, université Paris Descartes, hôpital européen Georges-Pompidou, 20-40, rue Leblanc, 75015 Paris, France
| | - S Rivera
- Service de radiothérapie, institut Gustave-Roussy, 94800 Villejuif, France
| | - E Fabre
- Service d'oncologie médicale, université Paris-Descartes, hôpital européen Georges-Pompidou, 75015 Paris, France
| | - C Pricopi
- Service de chirurgie thoracique et transplantation pulmonaire, université Paris Descartes, hôpital européen Georges-Pompidou, 20-40, rue Leblanc, 75015 Paris, France
| | - F Le Pimpec-Barthes
- Service de chirurgie thoracique et transplantation pulmonaire, université Paris Descartes, hôpital européen Georges-Pompidou, 20-40, rue Leblanc, 75015 Paris, France
| | - M Riquet
- Service de chirurgie thoracique et transplantation pulmonaire, université Paris Descartes, hôpital européen Georges-Pompidou, 20-40, rue Leblanc, 75015 Paris, France.
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Yuryev M, Pellegrino C, Jokinen V, Andriichuk L, Khirug S, Khiroug L, Rivera C. In vivo Calcium Imaging of Evoked Calcium Waves in the Embryonic Cortex. Front Cell Neurosci 2016; 9:500. [PMID: 26778965 PMCID: PMC4701926 DOI: 10.3389/fncel.2015.00500] [Citation(s) in RCA: 12] [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: 10/27/2015] [Accepted: 12/14/2015] [Indexed: 11/17/2022] Open
Abstract
The dynamics of intracellular calcium fluxes are instrumental in the proliferation, differentiation, and migration of neuronal cells. Knowledge thus far of the relationship between these calcium changes and physiological processes in the developing brain has derived principally from ex vivo and in vitro experiments. Here, we present a new method to image intracellular calcium flux in the cerebral cortex of live rodent embryos, whilst attached to the dam through the umbilical cord. Using this approach we demonstrate induction of calcium waves by laser stimulation. These waves are sensitive to ATP-receptor blockade and are significantly increased by pharmacological facilitation of intracellular-calcium release. This approach is the closest to physiological conditions yet achieved for imaging of calcium in the embryonic brain and as such opens new avenues for the study of prenatal brain development. Furthermore, the developed method could open the possibilities of preclinical translational studies in embryos particularly important for developmentally related diseases such as schizophrenia and autism.
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Affiliation(s)
- Mikhail Yuryev
- Neuroscience Center, University of Helsinki Helsinki, Finland
| | - Christophe Pellegrino
- INSERM U901, Institut de Neurobiologie de la Méditerranée (INMED), Parc Scientifique de LuminyMarseille, France; Aix-Marseille Université (AMU), UMR S901, Parc Scientifique de LuminyMarseille, France
| | - Ville Jokinen
- School of Chemical Technology, Aalto University Espoo, Finland
| | | | | | - Leonard Khiroug
- Neuroscience Center, University of Helsinki Helsinki, Finland
| | - Claudio Rivera
- Neuroscience Center, University of HelsinkiHelsinki, Finland; INSERM U901, Institut de Neurobiologie de la Méditerranée (INMED), Parc Scientifique de LuminyMarseille, France; Aix-Marseille Université (AMU), UMR S901, Parc Scientifique de LuminyMarseille, France
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Kourdougli N, Varpula S, Chazal G, Rivera C. Detrimental effect of post Status Epilepticus treatment with ROCK inhibitor Y-27632 in a pilocarpine model of temporal lobe epilepsy. Front Cell Neurosci 2015; 9:413. [PMID: 26557054 PMCID: PMC4615811 DOI: 10.3389/fncel.2015.00413] [Citation(s) in RCA: 12] [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: 07/26/2015] [Accepted: 09/28/2015] [Indexed: 01/18/2023] Open
Abstract
Temporal lobe epilepsy (TLE) is the most common type of epilepsy in adults where 20–30% of the patients are refractory to currently available anti-epileptic drugs. The RhoA/Rho-kinase signaling pathway activation has been involved in inflammatory responses, neurite outgrowth and neuronal death under pathological conditions such as epileptic insults. Acute preventive administration of ROCK inhibitor has been reported to have beneficial outcomes in Status Epilepticus (SE) epilepsy. In the present study, we evaluate the effect of chronic post SE treatment with the ROCK inhibitor Y-27632 in a rat pilocarpine model of TLE. We used chronic i.p. injections of Y-27632 for 5 days in 6 week old control rats or rats subjected to pilocarpine treatment as a model of TLE. Surprisingly, our findings demonstrate that a systemic administration of Y-27632 in pilocarpine-treated rats increases neuronal death in the CA3 region and ectopic recurrent mossy fiber sprouting (rMFS) in the dentate gyrus of the hippocampal formation. Interestingly, we found that chronic treatment with Y-27632 exacerbates the down-regulation and pathological distribution of the K+-Cl− cotransporter KCC2, thus providing a putative mechanism for post SE induced neuronal death. The involvement of astrogliosis in this mechanism appears to be intricate as ROCK inhibition reduces reactive astrogliosis in pilocarpine rats. Conversely, in control rats, chronic Y-27632 treatment increases astrogliosis. Together, our findings suggest that Y-27632 has a detrimental effect when chronically used post SE in a rat pilocarpine model of TLE.
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Affiliation(s)
- Nazim Kourdougli
- INSERM Unité 901, INMED Marseille, France ; Aix-Marseille Université, UMR S901 Marseille, France
| | - Saara Varpula
- INSERM Unité 901, INMED Marseille, France ; Aix-Marseille Université, UMR S901 Marseille, France ; Neuroscience Center, University of Helsinki Helsinki, Finland
| | - Genevieve Chazal
- INSERM Unité 901, INMED Marseille, France ; Aix-Marseille Université, UMR S901 Marseille, France
| | - Claudio Rivera
- INSERM Unité 901, INMED Marseille, France ; Aix-Marseille Université, UMR S901 Marseille, France ; Neuroscience Center, University of Helsinki Helsinki, Finland
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