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A Dehaqani A, Michelon F, Patella P, Petrucco L, Piasini E, Iurilli G. A mechanosensory feedback that uncouples external and self-generated sensory responses in the olfactory cortex. Cell Rep 2024; 43:114013. [PMID: 38551962 DOI: 10.1016/j.celrep.2024.114013] [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: 08/28/2023] [Revised: 12/20/2023] [Accepted: 03/13/2024] [Indexed: 04/28/2024] Open
Abstract
Sampling behaviors have sensory consequences that can hinder perceptual stability. In olfaction, sniffing affects early odor encoding, mimicking a sudden change in odor concentration. We examined how the inhalation speed affects the representation of odor concentration in the main olfactory cortex. Neurons combine the odor input with a global top-down signal preceding the sniff and a mechanosensory feedback generated by the air passage through the nose during inhalation. Still, the population representation of concentration is remarkably sniff invariant. This is because the mechanosensory and olfactory responses are uncorrelated within and across neurons. Thus, faster odor inhalation and an increase in concentration change the cortical activity pattern in distinct ways. This encoding strategy affords tolerance to potential concentration fluctuations caused by varying inhalation speeds. Since mechanosensory reafferences are widespread across sensory systems, the coding scheme described here may be a canonical strategy to mitigate the sensory ambiguities caused by movements.
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Affiliation(s)
- Alireza A Dehaqani
- Center for Neuroscience and Cognitive Systems, Istituto Italiano di Tecnologia, 38068 Rovereto, Italy; CIMeC, University of Trento, 38068 Rovereto, Italy
| | - Filippo Michelon
- Center for Neuroscience and Cognitive Systems, Istituto Italiano di Tecnologia, 38068 Rovereto, Italy; CIMeC, University of Trento, 38068 Rovereto, Italy
| | - Paola Patella
- Center for Neuroscience and Cognitive Systems, Istituto Italiano di Tecnologia, 38068 Rovereto, Italy
| | - Luigi Petrucco
- Center for Neuroscience and Cognitive Systems, Istituto Italiano di Tecnologia, 38068 Rovereto, Italy
| | - Eugenio Piasini
- International School for Advanced Studies (SISSA), Trieste, Italy
| | - Giuliano Iurilli
- Center for Neuroscience and Cognitive Systems, Istituto Italiano di Tecnologia, 38068 Rovereto, Italy.
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Bonzano S, Dallorto E, Molineris I, Michelon F, Crisci I, Gambarotta G, Neri F, Oliviero S, Beckervordersandforth R, Lie DC, Peretto P, Bovetti S, Studer M, De Marchis S. Nr2f1 shapes mitochondria in the mouse brain unraveling new insights into the neurodevelopmental disorder BBSOAS. Dis Model Mech 2023:312547. [PMID: 37260288 DOI: 10.1242/dmm.049854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 05/09/2023] [Indexed: 06/02/2023] Open
Abstract
The nuclear receptor Nr2f1 acts as a strong transcriptional regulator in embryonic and postnatal neural cells. In humans, mutations in the NR2F1 gene cause the Bosch-Boonstra-Schaaf Optic Atrophy-intellectual Syndrome (BBSOAS), a rare neurodevelopmental disorder characterized by multiple clinical features including vision impairments, intellectual disability, and autistic traits. In this study, we identified, by genome-wide and in silico analyses, a wide set of nuclear-encoded mitochondrial genes as potential genomic targets under direct Nr2f1 transcriptional control in neurons. By combining mouse genetics, neuroanatomical and imaging approaches we demonstrated that conditional Nr2f1 loss-of-function within the adult mouse hippocampal neurogenic niche results in a reduced mitochondrial mass associated with mitochondrial fragmentation and downregulation of key mitochondrial proteins in newborn neurons, whose functional integration and survival are impaired. Importantly, we also found dysregulation of several nuclear-encoded mitochondrial genes and downregulation of key mitochondrial proteins in the brain of Nr2f1-heterozygous mice, a validated BBSOAS model. Our data point to an active role of Nr2f1 in the mitochondrial gene expression regulatory network in neurons and support the involvement of mitochondrial dysfunction in BBSOAS pathogenesis.
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Affiliation(s)
- Sara Bonzano
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Eleonora Dallorto
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Ivan Molineris
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- IIGM Foundation-Italian Institute for Genomic Medicine, Turin, Italy
| | - Filippo Michelon
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Isabella Crisci
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Giovanna Gambarotta
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
- Department of Clinical and Biological Sciences (DSCB), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Francesco Neri
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- IIGM Foundation-Italian Institute for Genomic Medicine, Turin, Italy
| | - Salvatore Oliviero
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- IIGM Foundation-Italian Institute for Genomic Medicine, Turin, Italy
| | - Ruth Beckervordersandforth
- Institut für Biochemie, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Fahrstrasse 17, Erlangen, Germany
| | - Dieter Chichung Lie
- Institut für Biochemie, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Fahrstrasse 17, Erlangen, Germany
| | - Paolo Peretto
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Serena Bovetti
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Michèle Studer
- Institute de Biologie Valrose (iBV), Université Côte d'Azur (UCA), CNRS 7277, Inserm 1091, Avenue Valrose 28, Nice, France
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
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Martins D, Rahal S, Silva Júnior J, Michelon F, Tomacheuski R, Correia L, Woods L, Mamprim M, Lourenço M, Santos I. Effects of reticulated hyaluronic acid alone or associated with whole-body vibration in dogs with osteoarthritis due to hip dysplasia. Top Companion Anim Med 2022; 49:100653. [DOI: 10.1016/j.tcam.2022.100653] [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] [Received: 10/01/2020] [Revised: 01/27/2022] [Accepted: 03/01/2022] [Indexed: 11/26/2022]
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Sivolella S, Brunello G, Michelon F, Concheri G, Graiff L, Meneghello R. Implantoplasty: Carbide burs vs diamond sonic tips. An in vitro study. Clin Oral Implants Res 2021; 32:324-336. [PMID: 33341106 DOI: 10.1111/clr.13702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/06/2020] [Accepted: 12/09/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Implantoplasty (IP) is a treatment option for peri-implantitis. Mechanical concerns were raised on fracture resistance of implants subjected to this procedure. This study aimed to compare two methods of IP in terms of implant wear and fracture resistance, and of surface topography. MATERIAL AND METHODS Eighteen cylindrical screw-shaped dental implants (4 mm diameter, 13 mm length) with an external hexagonal connection were used. IP was performed on the first 6-mm implant surface with a sequence of burs or diamond sonic tips, both followed by an Arkansas finishing. IP duration and implant weight variation were recorded. Micro-computed tomography (micro-CT) was used to evaluate material loss. Implant fracture resistance was assessed by static compression test. Surface topography analysis was performed with a stylus profilometer. Scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS) was applied for implant surface morphology and elemental characterization. RESULTS Micro-CT showed less material loss in sonic compared to burs. No statistically significant difference was found between the mean fracture resistance values reached in bur and sonic, both followed by Arkansas, and with respect to control. IP performed with burs led to a smoother surface compared to sonic. Equivalent final surface roughness was found after Arkansas in both IP procedures. SEM-EDS showed a deburring effect associated to sonic and revealed carbon and aluminum peaks attributable to contamination with sonic diamond tips and Arkansas bur, respectively. CONCLUSIONS IP with sonic diamond tips was found to be more conservative in terms of structure loss. This could have a clinical relevance in case of narrow-diameter implants.
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Affiliation(s)
- Stefano Sivolella
- Department of Neurosciences, School of Dentistry, University of Padova, Padova, Italy
| | - Giulia Brunello
- Department of Neurosciences, School of Dentistry, University of Padova, Padova, Italy
| | - Filippo Michelon
- Department of Neurosciences, School of Dentistry, University of Padova, Padova, Italy
| | - Gianmaria Concheri
- Department of Civil, Environmental and Architectural Engineering, University of Padova, Padova, Italy
| | - Lorenzo Graiff
- Department of Neurosciences, School of Dentistry, University of Padova, Padova, Italy
| | - Roberto Meneghello
- Department of Management and Engineering, University of Padova, Vicenza, Italy
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Brunello G, Michelon F, Graiff L, Stellini E, Meneghello R, Sivolella S. Implantoplasty‐ tungsten carbide bur versus diamond sonic tip: Preliminary results of an in vitro study. Clin Oral Implants Res 2019. [DOI: 10.1111/clr.102_13509] [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: 11/29/2022]
Affiliation(s)
- Giulia Brunello
- Department of Neurosciences, Section of Dentistry, University of Padova, Italy
| | - Filippo Michelon
- Department of Neurosciences, Section of Dentistry, University of Padova, Italy
| | - Lorenzo Graiff
- Department of Neurosciences, Section of Dentistry, University of Padova, Italy
| | - Edoardo Stellini
- Department of Neurosciences, Section of Dentistry, University of Padova, Italy
| | | | - Stefano Sivolella
- Department of Neurosciences, Section of Dentistry, University of Padova, Italy
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Duzanski AP, Ortiz AD, Fonseca MW, Flórez MM, Rodrigues LT, Michelon F, Rocha NS. Tumor venéreo transmissível canino com resistência quimioterápica e metástase esplênica - Relato de caso. Rev Med Vet Zoot 2019. [DOI: 10.15446/rfmvz.v66n3.84262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
O Tumor Venéreo Transmissível Canino (TVTC) é uma neoplasia de células redondas que tem a particularidade de se implantar em mucosas que tenham perdido a sua integridade. Nesse local o tumor prolifera e ocasionalmente origina metástase. Em geral, o tumor responde ao tratamento com sulfato de vincristina, porém a resistência quimioterápica associada ao fenótipo tumoral tem sido documentada. Objetivou-se relatar um caso de TVTC genital de fenótipo citológico misto com metástase esplênica e o insucesso da quimioterapia com sulfato de vincristina, em uma fêmea canina, da raça Australian Cattle Dog, de cinco anos de idade. Após diagnóstico citológico e histológico, o tumor primário foi ainda caracterizado em fase de progressão e mostrou baixa expressão de moléculas do complexo principal de histocompatibilidade MHC (4,4 ± 2% classe I e 11 ± 4,1% classe II). A cadela foi submetida à ovariohisterectomia e esplenectomia terapêutica e não apresentou recidiva do tumor após 12 meses de acompanhamento clínico.
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