79 results on '"Frau C"'
Search Results
2. Ammonite biostratigraphy of the Sierra del Patrón section (Durango State, Mexico) and its bearing on the lower/upper Aptian boundary of the Central Atlantic Province
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Moreno-Bedmar, J.A., Casados-Monroy, A., Frau, C., Pictet, A., Chávez Cabello, G., and Esquivel-Macías, C.
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- 2018
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3. Editorial
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Frau C. Buck
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Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Published
- 1977
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4. Editorial
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Frau C. Buck
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Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Published
- 1978
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5. Leipzig und sein 'Medizinisches Viertel' zur Zeit Trendelenburgs
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Becker, Frau C. and Schwokowski, Christian, editor
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- 1994
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6. DO PSYCHOLOGY EXPERIMENT BUILDING LANGUAGE TEST BATTERY EXECUTIVE FUNCTION TASKS SIGNIFICANTLY DISCRIMINATE INSOMNIA PATIENTS WITH FRONTOTEMPORAL SYNDROME FROM HEALTHY CONTROLS MATCHED ON AGE, GENDER, AND EDUCATIONAL LEVEL?
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Somma, A, Fossati, A, Marelli, S, Frau, C, Barranca, M, Gialdi, G, Castelnuovo, A, Cuomo, R, Ferini Strambi, L, Associated Profess Sleep Soc, Sleep Res Soc, Oxford Univ Press, Somma, A, Fossati, A, Marelli, S, Frau, C, Barranca, M, Gialdi, G, Castelnuovo, A, Cuomo, R, and Ferini Strambi, L
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- 2019
7. The use of self-mirroring therapy in phase 1 treatment of a patient with other specified dissociative disorder
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Frau, C., primary, Cocco, P., additional, Navarra, R., additional, Caruso, C., additional, and Ross, C., additional
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- 2018
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8. Devolatilization of organo-sulfur compounds in coal gasification
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Bassani, A., Frau, C., Maggio, E., Pettinau, A., Calì, G., Ranzi, E., and Manenti, F.
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sulfur recovery ,lcsh:Computer engineering. Computer hardware ,Settore AGR/15 - SCIENZE E TECNOLOGIE ALIMENTARI ,Hydrogen sulfide ,lcsh:TP155-156 ,lcsh:TK7885-7895 ,Hydrogen sulfide, Sulfur, sulfur recovery ,Settore ING-IND/25 - IMPIANTI CHIMICI ,lcsh:Chemical engineering ,Sulfur - Abstract
Coal gasification is a thermo-chemical process aiming at the production of high heating value syngas. The coal charges present, typically, a low quantity of sulfur compounds for prevent the formation of a large amount of sulfuric acid (H2S), that is a pollutant and a poison for catalysts, in syngas stream. However, in the world there are a lot of coals that cannot be used for gasification because of their high sulfur content (e.g. Sulcis Italian coal or Inner Mongolia Chinese coal). The interest on these types of coal is increasing due to a novel technology that allows to convert H2S and CO2 into syngas (AG2STM). The aim of this work is to propose a predictive kinetic model of the release of sulfur compounds (e.g H2S) from coal. This kinetic scheme is implement into GASDS, a package that includes a gasifier mathematical model, which accurately describes the inter-phase mass and heat transfer. The first complexity relies in the characterization of the coal, in particular the relative amount of the different forms of sulfur components (e.g. inorganic such as pyritic and sulfates, and organic sulfur such as aliphatic, aromatic and thiophenic) and their pyrolysis and devolatilization process. The kinetic model, with the related rate parameters, is validated through comparison with experimental data from the literature and obtained during several experimental campaigns at the Sotacarbo S.p.A. pilot platform. Finally, different operating conditions of gasification are analyzed in order to obtain the best yield in the downstream process, with special reference to the novel Acid Gas to Syngas (AG2STM) process.
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- 2017
9. Local hypothyroidism favours the progression of rat preneoplastic lesions to HCC
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Frau C, Loi R, Petrelli A, Perra A, Menegon S, Kowalik MA, Pinna S, Leoni VP, Fornari F, Gramantieri L, Ledda-Columbano GM, Giordano S, Columbano A, Frau C, Loi R, Petrelli A, Perra A, Menegon S, Kowalik MA, Pinna S, Leoni VP, Fornari F, Gramantieri L, Ledda-Columbano GM, Giordano S, and Columbano A
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liver carcinogenesis ,HCC, Thyroid hormon receptor, animal model ,Mutation ,cell ,Thyroid hormone receptors - Abstract
Thyroid hormone receptors (TRs) are ligand-dependent transcription factors that mediate most of the effects elicited by the thyroid hormone, 3,5,3′-L-triiodothyronine (T3). TRs have been implicated in tumorigenesis, although it is unclear whether they act as oncogenes or tumor suppressors, and at which stage of tumorigenesis their dysregulation occurs. Using the resistant-hepatocyte rat model (R-H model), we found down-regulation of TRβ1 and TRα1 and their target genes in early preneoplastic lesions and hepatocellular carcinoma (HCCs), suggesting that a hypothyroid status favors the onset and progression of preneoplastic lesions to HCC. Notably, TRβ1 and, to a lesser extent, TRα1 down-regulation was observed only in preneoplastic lesions positive for the progenitor cell marker, cytokeratin-19 (Krt-19) and characterized by a higher proliferative activity, compared to the Krt-19 negative ones. TRβ1 down-regulation was observed also in the vast majority of the analyzed human HCCs, compared to the matched peritumorous liver or to normal liver. Hyperthyroidism induced by T3 treatment caused up-regulation of TRβ1 and of its target genes in Krt-19+ preneoplastic rat lesions and was associated with nodule regression. In HCC, TRβ1 down-regulation was not the result of hypermethylation of its promoter, but was associated with an increased expression of TRβ1-targeting microRNAs ([miR]-27a, -181a, and -204). An inverse correlation between TRβ1 and miR-181a was also found in human cirrhotic peritumoral tissue, compared to normal liver. Conclusion: Down-regulation of TRs, especially TRβ1, is an early and relevant event in liver cancer development and is species and etiology independent. The results also suggest that a hypothyroid status of preneoplastic lesions may contribute to their progression to HCC and that the reversion of this condition may represent a possible therapeutic goal to interfere with the development of this tumor
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- 2014
10. Le genre Macrosphites Meek, 1876 (Ammonoidea) dans l'Aptien inférieur de Cassis-La Bédoule (Bouches-du-Rhône, France). Proposition d'un nouveau schéma zonal pour la série stratotypique
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Frau, C., Delanoy, G., and Hourqueig E.
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Europe ,palaeontology ,Ammonoidea ,animalia ,stratigraphy ,Early Cretaceous ,systematics ,dimorphism - Abstract
uploaded for Revue de Paléobiologie by Plazi
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- 2015
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11. Questioning carbonate facies model definition with reference to the Lower Cretaceous Urgonian platform (SE France Basin)
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Michel Julien, Lanteaume Cyprien, Massonnat Gérard, Borgomano Jean, Tendil Anthony J.-B., Bastide Fanny, Frau Camille, Léonide Philippe, Rebelle Michel, Barbier Mickael, Danquigny Charles, and Rolando Jean-Paul
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urgonian carbonate platform ,depositional facies ,sedimentary model ,lower cretaceous ,barremian ,aptian ,rudists ,Geology ,QE1-996.5 - Abstract
Designing carbonate facies models requires the integration, correlation and conceptual interpretation of multiple geological data sets. Potential significant errors are sourced from uncertain stratigraphic correlations, speculative palaeoecological interpretations and poorly recorded palaeotopographic profiles. The present study explores a methodological workflow to define a well-supported facies model. An exhaustive literature review is presented on sedimentary facies and depositional profiles of Urgonian carbonate platform from SE France and Switzerland (Barremian–Aptian interval). The historical evolution of Urgonian facies models and related sedimentological concepts is investigated to contextualise published models. The presented conceptual model and table of depositional facies shows a consistent, process-based organization of specific elementary facies, facies associations and carbonate system. Within the chronostratigraphic framework, the study of synchronous strata correlations provides quantitative analyses of facies-belt extents and palaeobathymetric estimations. The resulting depositional profile is based on general palaeoecological and sedimentological concepts, facies distribution on palaeogeographic maps and stacking trends. In rare locations in the field, direct lateral facies belt transitions are recorded. Proximal (i.e. emersive and peloidal-foraminiferal) depositional facies are rarely observed; most outcrops record the (i) rudist facies association, which corresponds to distal parts of the inner platform, (ii) coral, ooidal and bioclastic facies associations, which are interpreted to occur on the outer platform, and (iii) calcisiltite, slope and basinal deposits. Key data and concepts allow for the building up of a robust, harmonised facies model that can be used to properly interpret palaeoenvironmental changes, stacking trends and stratigraphic sequence evolution, the resolution of which depends on the available chronostratigraphic framework.
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- 2023
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12. Hernia diafragmática de Bochdalek durante la gestación. A propósito de un caso
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Luque, A., primary, Frau, C., additional, Cantó, R., additional, Rodríguez, J.M., additional, González, J., additional, Díaz, J., additional, Gimbert, E., additional, and Santos, A., additional
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- 2001
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13. Long term changes (after twelve years) in the composition of phytoplankton communities in the Gorg Blau Reservoir (Majorca, Spain)
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Moyà, G., primary, Bennasar, G., additional, Frau, C., additional, Garcia, L., additional, Gómez, M., additional, and Ramon, G., additional
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- 1993
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14. Upper Tithonian ammonites (Himalayitidae Spath, 1925 and Neocomitidae Salfeld, 1921) from Charens (Drôme, France)
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Frau Camille, Bulot Luc G., Wimbledon William A.P., and Ifrim Christina
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Ammonoidea ,Tithonian ,Jurassic ,biostratigraphy ,Drôme ,France ,Geology ,QE1-996.5 - Abstract
This contribution focuses on the Perisphinctoidea ammonite taxa from the Upper Tithonian at Charens (Drôme, south-east France). Emphasis is laid on five genera that belong to the families Himalayitidae and Neocomitidae. We document the precise vertical range of the index-species Micracanthoceras microcanthum, and a comparative ontogenetic- biometric analysis sheds new light on its range of variation and dimorphism as compared to the bestknown Spanish populations. As herein understood, the lower boundary of the M. microcanthum Zone (base of the Upper Tithonian) is fixed at the FAD of its index species. The faunal assemblages and species distribution of the P. andreaei Zone are rather similar to those described at the key-section of Le Chouet as confirmed by the co-occurrence of the genera Protacanthodiscus, Boughdiriella and Pratumidiscus. New palaeontological evidence supports the view that the basal Neocomitidae Busnardoiceras busnardoi was derived from Protacanthodiscus andreaei in the upper part of the P. andreaei Zone.
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- 2016
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15. A methodological approach for a home occupants centred web tool to support buildings energy retrofitting process
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Pili Stefano, Poggi Francesca, and Frau Caterina
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Environmental sciences ,GE1-350 - Abstract
This paper presents a methodological approach to develop a user-oriented web tool to support the early stage of the decision making process for energy retrofitting of residential real estates. The tool mixes a simple analytical Urban Building Energy Model (UBEM) to user-oriented feedback interfaces to simulate the retrofitting potential of the residential units. The AUREE tool will be based on a Web – GIS GeoBlog portal with customized interfaces aimed to share the knowledge on urban building heritage and promote participation of stakeholders of the urban community. There are many literature exempla of guidelines or quality protocols on the topic of energy efficiency specified to particular types of buildings or focused on a territorial area, but these are generally not integrated into a geographically based tool. Moreover, the AUREE methodology aims to set interfaces that could use the portal users’ feedback to update the content of the portal itself. After touch on the theoretical context, a summary of the AUREE project is presented, and then the paper focuses on the structures of algorithms and tools adopted on the residential users’ interfaces. The interface mixes the results of an engineering Urban Building Energy Model based on local archetypal approach and standard energy calculation (series UNI 11300 - TS), with participative data provided via user-interactive interfaces to obtain customized retrofitting scenarios and suggestions. At the end of the paper, the main critical aspects and the further step of the research project are pointed
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- 2021
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16. An overview of the Santonian amber-bearing deposits of the Sainte-Baume Massif, southeastern France
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Frau Camille, Saint Martin Jean-Paul, Saint Martin Simona, and Mazière Bruno
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amber ,santonian ,cretaceous ,sainte-baume massif ,var ,france ,Geology ,QE1-996.5 - Abstract
The Upper Cretaceous sedimentary succession cropping out in the Sainte-Baume Massif (Var, southeastern France) is of late Turonian to Campanian age. There, complex imbrication and rapid evolution in space and time of shallow-marine, fluvio-deltaic and lacustrine environments at the front of the North Provence Durancian uplift occur during the Santonian. Marly and/or sandy strata rich in lignite remains and amber grains are interspersed throughout the Santonian series. According to new in situ collections, the features of the amber grains, and their micro-inclusions, are similar to those found in well-known amber-bearing sites from the Bouches-du-Rhône department. This testifies of a widespread resin-producing tree forests in southeastern France at that time.
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- 2021
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17. Reassessment of amber-bearing deposits of Provence, southeastern France
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Saint Martin Jean-Paul, Dutour Yves, Ebbo Luc, Frau Camille, Mazière Bruno, Néraudeau Didier, Saint Martin Simona, Tortosa Thierry, Turini Eric, and Valentin Xavier
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amber ,geology ,cretaceous ,oligocene ,miocene ,provence ,southeastern france ,Geology ,QE1-996.5 - Abstract
The presence of “geological” amber (or “succin” in old French monographs) has been reported for several centuries in the Mesozoic deposits of Provence, southeastern France. Diverse amber-bearing sites were inventoried by the authors but their location and stratigraphical context remain unclear for most of them. In the past decades, various data concerning chemistry, palaeontological content and comparison with archaeological discoveries improved our knowledge of the ambers of Provence, but only those of Cretaceous age. The present paper aims at providing a comprehensive description of all the presently known amber-bearing deposits of Provence, including the description of new sites. We highlight the great potential of Provence ambers and allow to consider a wider time range, from the Early Cretaceous to the Miocene.
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- 2021
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18. Erratum to: Reassessment of amber-bearing deposits of Provence, southeastern France
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Saint Martin Jean-Paul, Dutour Yves, Ebbo Luc, Frau Camille, Mazière Bruno, Néraudeau Didier, Saint Martin Simona, Tortosa Thierry, Turini Eric, and Valentin Xavier
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Geology ,QE1-996.5 - Published
- 2021
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19. Urban Abacus of Building Energy Performances: a methodological approach
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Pili Stefano, Fois Valeria, Loria Eusebio, Frau Caterina, and Orrù Pier Francesco
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Environmental sciences ,GE1-350 - Abstract
This paper presents a methodological approach to develop the tool “Urban Abacus of Building Energy performances (Abaco URbano Energetico degli Edifci – AUREE)” for supporting the renovation and energy efficiency enhancement of urban building heritage. The AUREE tool will be based on a Web – GIS GeoBlog portal with some customized interfaces aimed to share the knowledge on urban building heritage and promote the participation of the stakeholders of the urban community. The tool improves citizen and stakeholders awareness on building energy efficiency issues and facilitates the linkage between demand and offer for building companies services via the integration of two main elements: the first is a knowledge layer that represents the actual state of the energy performance of urban building heritage and the second is a spatial based Abacus of the more common building characteristics (structures, plants, uses, ..) and energy retrofitting and renovation technologies. After a touch on the theoretical context, this paper presents a summary of the AUREE general framework and focuses on the methodological approach of the Urban Abacus. The data structure integrates an Urban Building Energy Model (UBEM) in order to support on the energy retrofitting scenario analysis at the level of single building and also for a group of them (city block, district, city). At the end of the paper the furthers research steps have been pointed
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- 2020
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20. Composición cualitativa del fitoplancton de los embalses de Cúber y Gorg Blau (Serra de Tramuntana, Mallorca). I. Cyanophyta y Dinophyta
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Bennasar, G., Frau, C., Garcia, Ll., Gómez, M., Moyà, G., and Ramon, G.
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Phytoplankton Spain Cúber Gorg Blau ,Reservoirs Spain Cúber Gorg Blau ,Natural History - Abstract
not available
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- 1989
21. Editorial
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Buck, Frau C., primary
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- 1977
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22. Editorial
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Buck, Frau C., primary
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- 1978
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23. Editorial.
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Buck, Frau C.
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- 1978
24. Editorial.
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Buck, Frau C.
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- 1977
25. A longitudinal study on clinically relevant self-reported depression, anxiety and acute stress features among Italian community-dwelling adults during the COVID-19 related lockdown: Evidence of a predictive role for baseline dysfunctional personality dimensions
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Chiara Liotta, Claudia Frau, Robert F. Krueger, Miriana Colanino, Giulia Gialdi, Kristian E. Markon, Antonella Somma, Andrea Fossati, Danila Ferlito, Somma, Antonella, Krueger, R. F., Markon, K. E., Gialdi, G., Colanino, M., Ferlito, D., Liotta, C., Frau, C., and Fossati, A.
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acute stress ,Adult ,Male ,Longitudinal study ,COVID-19 quarantine ,media_common.quotation_subject ,Internalizing disorder ,Dysfunctional family ,Anxiety ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Acute stress reaction ,Personality ,Longitudinal Studies ,Depression (differential diagnoses) ,media_common ,Depression ,SARS-CoV-2 ,business.industry ,COVID-19 ,medicine.disease ,Acute Stress Disorder ,030227 psychiatry ,Psychiatry and Mental health ,Clinical Psychology ,maladaptive personality domains ,Italy ,Communicable Disease Control ,Quarantine ,Female ,Independent Living ,Self Report ,medicine.symptom ,business ,030217 neurology & neurosurgery ,Research Paper ,Clinical psychology - Abstract
Background: Although necessary for public health, quarantine has been documented to cause post-traumatic stress symptoms, anxiety, and depression. We designed the present longitudinal study to evaluate the psychological impact of quarantine in Italian community-dwelling adult participants. Methods: A sample of 304 Italian community-dwelling adult participants (75.7% female; mean age = 35.28 years) was administered self-reported measures of depression, anxiety and acute stress symptoms at the beginning and at the end of the lockdown. Potential predictors of clinically relevant symptoms at the end of the lockdown were assessed. Specifically, data on gender, civil status, education level, occupation, and area of residence, as well as maladaptive personality domains were collected. Results: More than 43% of participants suffered from the early impact of the lockdown; at the end of the lockdown roughly 32% of participants still reported any clinically relevant depression anxiety, and/or acute stress disorder condition. Clinically relevant acute stress reaction at the beginning of lockdown was a particularly important risk factor for experiencing clinically relevant acute stress, depression, and anxiety at the end of the lockdown. Maladaptive personality domains represent non-trivial predictors of participants’ self-reports of clinically relevant depression, anxiety, and acute stress conditions at the end of the lockdown. Limitations: Excess of female participants and the impossibility of evaluating if participants suffered from any internalizing disorder before the COVID-19 quarantine represent major limitations of our study. Conclusions: Our findings suggest assessment of internalizing disorder symptoms during quarantine may be helpful in identifying people who may benefit from early treatment interventions.
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- 2021
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26. The relationship between obsessive–compulsive spectrum disorders and DSM‐5 dysfunctional personality domains in a nonclinical sample of Italian women
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Giada Liberatore, Kristian E. Markon, Robert F. Krueger, Antonella Somma, Giulia Gialdi, Andrea Fossati, Claudia Frau, Linda Boscaro, Richard T. LeBeau, Somma, Antonella, Lebeau, R. T., Krueger, R. F., Markon, K. E., Gialdi, G., Frau, C., Boscaro, L., Liberatore, G., and Fossati, A.
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Adult ,Obsessive-Compulsive Disorder ,050103 clinical psychology ,media_common.quotation_subject ,Personality Disorders ,Negative affectivity ,03 medical and health sciences ,0302 clinical medicine ,Psychoticism ,mental disorders ,medicine ,Humans ,Hoarding disorder ,Personality ,0501 psychology and cognitive sciences ,Spectrum disorder ,media_common ,Obsessive–compulsive spectrum ,Health Policy ,05 social sciences ,medicine.disease ,030227 psychiatry ,Diagnostic and Statistical Manual of Mental Disorders ,Psychiatry and Mental health ,Italy ,Body dysmorphic disorder ,Female ,Pshychiatric Mental Health ,medicine.symptom ,Personality Assessment Inventory ,Psychology ,Clinical psychology - Abstract
To evaluate the usefulness of the DSM-5 maladaptive personality domains in explaining the similarities and differences among four disorders included in the obsessive–compulsive spectrum, 428 Italian community-dwelling women (mean age=31.96years, SD=12.30years) were administered the Obsessive–Compulsive Spectrum Disorder Scales and the Personality Inventory for DSM-5-Short Form as part of an ongoing online survey on women's health. Multiple Indicators Multiple Causes (MIMIC) confirmatory bifactor analysis results showed that the OCSD general factor (i.e., obsessive–compulsive spectrum factor) was positively associated with Negative Affectivity, whereas Body Dysmorphic Disorder (BDD), Hoarding Disorder (HD), and Skin-Picking Disorder (SPD) specific factors showed significant and substantial differential relationships with dysfunctional personality domains. Specifically, BDD was positively associated with Negative Affectivity, Detachment and Psychoticism domains; HD was associated with high Negative Affectivity and Psychoticism; and SPD was associated with Detachment. © 2020 John Wiley & Sons, Ltd.
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- 2021
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27. Hypermentalizing as a marker of borderline personality disorder in Italian adolescents: a cross-cultural replication of Sharp and colleagues’ (2011) findings
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Arianna Terrinoni, Antonella Somma, Carla Sharp, Andrea Fossati, Claudia Frau, Mauro Ferrara, Ignazio Ardizzone, Somma, A., Ferrara, M., Terrinoni, A., Frau, C., Ardizzone, I., Sharp, C., and Fossati, A.
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medicine.medical_specialty ,lcsh:RC435-571 ,Short Report ,behavioral disciplines and activities ,Mentalization ,Social cognition ,Intervention (counseling) ,Forensic psychiatry ,lcsh:Psychiatry ,Adolescence Movie for the assessment of social cognition ,mental disorders ,medicine ,Child and adolescent psychiatry ,Cross-cultural ,Adolescence ,Borderline personality disorder ,Inpatients ,Movie for the assessment of social cognition ,Biological Psychiatry ,medicine.disease ,Personality disorders ,Psychiatry and Mental health ,Clinical Psychology ,Psychology ,Clinical psychology - Abstract
Background Extant literature indicates that Borderline Personality Disorder (BPD) may be reliably assessed in adolescence. Sharp and colleagues’ (2011) suggested that mentalization could be an important early target for intervention in BPD adolescents and showed that hypermentalizing may represent an important marker to distinguish emerging BPD from adolescent turmoil. We aimed at testing if both dimensionally-assessed and categorically-diagnosed BPD was selectively associated with hypermentalizing errors on the Movie for the Assessment of Social Cognition (MASC) task in Italian adolescent inpatients and community adolescents. Findings The sample was composed of 58 Italian adolescents who were consecutively admitted to an adolescent psychiatry unit in Rome, Italy. BPD was assessed using the Structured Clinical Interview for DSM-5 Personality Disorders (SCID-5-PD); the MASC task was used to assess mentalizing. Findings supported the hypothesis of a specific link between BPD features and hypermentalizing in adolescent inpatients. Both dimensionally-assessed and categorically-assessed BPD showed significant and non-negligible associations with hypermentalizing. The overall performance on the MASC task significantly discriminated BPD adolescents from Italian community-dwelling adolescents. Conclusions Our findings supported the hypothesis that specific deficits in mentalization–namely, hypermentalizing–may play a crucial role in the developmental pathway leading to emerging BPD in adolescence.
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- 2019
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28. COVID-19 pandemic preventive behaviors and causal beliefs among Italian community dwelling adults
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Claudia Frau, Giulia Gialdi, Andrea Fossati, Antonella Somma, Margherita Barranca, Somma, A., Gialdi, G., Frau, C., Barranca, M., and Fossati, A.
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Adult ,2019-20 coronavirus outbreak ,Coronavirus disease 2019 (COVID-19) ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Health Behavior ,Frequency of use ,Sample (statistics) ,sources of information ,01 natural sciences ,preventive behaviors ,010104 statistics & probability ,03 medical and health sciences ,0302 clinical medicine ,Surveys and Questionnaires ,Pandemic ,Humans ,Social media ,030212 general & internal medicine ,0101 mathematics ,Pandemics ,Applied Psychology ,causal beliefs ,SARS-CoV-2 ,Italian epidemic ,COVID-19 ,Italy ,Communicable Disease Control ,Psychology ,Clinical psychology - Abstract
In an online sample of 1054 Italian community-dwelling adults, we assessed the relationships between the frequency of implementation of practices intended to prevent COVID-19 infection, degree of agreement with theories about the origin of the infections, and the frequency of use of different sources of information concerning the COVID-19 pandemic. The results showed that participants’ COVID-19-related preventive behaviors and causal beliefs were significantly associated with selected demographic variables and frequency of use of specific sources of information (e.g. scientific journals vs social media).
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- 2020
29. Body Dysmorphic Disorder in the Perspective of the Alternative DSM-5 Model for Personality Disorder: A Study on Italian Community-Dwelling Women
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Linda Boscaro, Claudia Frau, Robert F. Krueger, Giada Liberatore, Kristian E. Markon, Antonella Somma, Giulia Gialdi, Andrea Fossati, Somma, A., Krueger, R. F., Markon, K. E., Gialdi, G., Frau, C., Boscaro, L., Liberatore, G., and Fossati, A.
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Adult ,Personality Inventory ,media_common.quotation_subject ,Dysfunctional family ,Personality Disorders ,DSM-5 ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,mental disorders ,medicine ,Personality ,Humans ,media_common ,Anhedonia ,medicine.disease ,Body Dysmorphic Disorders ,030227 psychiatry ,Diagnostic and Statistical Manual of Mental Disorders ,Psychiatry and Mental health ,Psychosocial Functioning ,Convergent validity ,Italy ,Body dysmorphic disorder ,Anxiety ,Female ,Independent Living ,medicine.symptom ,Personality Assessment Inventory ,Psychology ,030217 neurology & neurosurgery ,Clinical psychology - Abstract
To evaluate the relationships between body dysmorphic disorder (BDD) and Alternative DSM-5 Model for Personality Disorder (AMPD) criterion A and dysfunctional personality trait (i.e., criterion B) measures, 420 Italian community-dwelling women were administered three measures of BDD (i.e., the Body Dysmorphic Disorder Questionnaire, the Body Dysmorphic Disorder-Dimensional Scale, and the Appearance Anxiety Inventory), as well as the Level of Personality Functioning Scale-Brief Form (LPFS-BF) and the Personality Inventory for DSM-5-Short Form (PID-5-SF). The three BDD measures showed substantial convergent validity correlations and could be reliably cumulated to obtain the BDD Cumulative Index (BDDCI). Several significant, nonnegligible correlations were observed between the BDDCI as well as the LPFS-BF scale scores and PID-5-SF personality trait scale scores. Relative importance weight analysis results showed that LPFS-BF scale scores and PID-5-SF trait scale scores were substantial predictors of the BDDCI scores (R = 0.42, f = 0.72). In particular, AMPD criterion A impairment in self-functioning and AMPD criterion B depressivity, anhedonia, perseveration, separation insecurity, and cognitive and perceptual dysregulation were core components of the dysfunctional personality profile associated with BDD.
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- 2020
30. Dysfunctional personality features, non-scientifically supported causal beliefs, and emotional problems during the first month of the COVID-19 pandemic in Italy
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Robert F. Krueger, Silvia Lovallo, Claudia Frau, Kristian E. Markon, Antonella Somma, Andrea Fossati, Giulia Gialdi, Somma, A., Gialdi, G., Krueger, R. F., Markon, K. E., Frau, C., Lovallo, S., and Fossati, A.
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Social distance ,media_common.quotation_subject ,05 social sciences ,COVID-19 pandemic ,050109 social psychology ,Dysfunctional family ,Logistic regression ,050105 experimental psychology ,Negative affectivity ,Article ,COVID-19 causal beliefs ,Developmental psychology ,Emotional problems ,Pandemic ,Personality ,Dysfunctional personality domains ,0501 psychology and cognitive sciences ,Big Five personality traits ,Association (psychology) ,Psychology ,General Psychology ,media_common - Abstract
The present study aimed at assessing the impact of demographic characteristics, maladaptive personality traits and causal beliefs about COVID-19 on perceived emotional problems in a sample of Italian community-dwelling adults (N = 1043) in the first month of the social distancing period due to the COVID-19 pandemic in Italy. Hierarchical logistic regression analysis results showed that dysfunctional personality domains and non-scientifically supported causal beliefs explained all the variance that was originally explained by demographic variables (i.e., age and gender). In particular, negative affectivity and detachment represented relevant risk factors for reduced emotional well-being in our sample. A significant positive association was observed also between emotional problems and supernatural causal beliefs on the COVID-19 infection. Our data supported the importance of considering the impact of quarantine measures on psychological well-being, while suggesting possible risk factors related to individual differences in personality and causal beliefs., Highlights • We examined perceived emotional problems related to COVID-19 pandemic • We considered individual differences in personality and causal beliefs • Dysfunctional personality domains are related to perceived emotional problems • Non-scientifically supported causal beliefs are related to emotional problems • The impact of quarantine on psychological well-being should be investigated
- Published
- 2020
31. Phacomatosis pigmento-vascularis
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Escalas Taberner, J., González Martín, A., and Busquets Frau, C.
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- 1998
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32. A Force Field: Literature, Journalism and the Market at the End of the Nineteenth Century
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FINOTTI, FABIO, G. Mannironi, R. Risso, G. Romani, G. Brian, M. Piperno, F. Cammilletti, F. Casari, F. Finotti, P. Giuli, A. Chemello, O. Santovetti, M.G. Lolla, O. Frau, C. Gragnani, K. Mitchell, Gabriella Romani, Jennifer Burns, and Finotti, Fabio
- Subjects
Checchi ,Fanfulla ,Tomaselli ,Giornalismo - Abstract
Il saggio affronta la questione delle relazioni tra letteratura e giornalismo a fine Ottocento. La necessità di rivolgersi a un pubblico ampio e indifferenziato cambia le condizioni della scrittura letteraria all'interno del cosiddetto "giornalismo domenicale". La dialettica tra arte e mercato è colta e analizzata in particolare nel carteggio inedito tra Eugenio Checchi e Angelo Tomaselli, legato al celebre "Fanfulla della Domenica". Attraverso le lettere di Checchi e i suoi articoli il saggio traccia la nascita di un paradigma letterario nuovo e di un nuovo autore, il cui successo si fonda sia sulla leggibilità e attualità dei testi, sia sulla capacità di divenire personaggio, trasformandosi da produttore a soggetto di discorso.
- Published
- 2017
33. Deletion of Stearoyl-CoA Desaturase-1 From the Intestinal Epithelium Promotes Inflammation and Tumorigenesis, Reversed by Dietary Oleate
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Antonio Moschetta, Simon Ducheix, Carla Frau, Carlo Sabbà, Marcello Chieppa, Gabriele Mocciaro, Justine Bertrand-Michel, Jennifer Härdfeldt, Michelina Plateroti, Jean-Marc A. Lobaccaro, Stefania De Santis, Julian L. Griffin, James M. Ntambi, Claudia Peres, Elena Piccinin, Ducheix, S., Peres, C., Hardfeldt, J., Frau, C., Mocciaro, G., Piccinin, E., Lobaccaro, J. -M., De Santis, S., Chieppa, M., Bertrand-Michel, J., Plateroti, M., Griffin, J. L., Sabba, C., Ntambi, J. M., and Moschetta, A.
- Subjects
Male ,0301 basic medicine ,medicine.medical_specialty ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Dietary Fats, Unsaturated ,Internal medicine ,Intestinal Neoplasms ,medicine ,Animals ,Intestinal Mucosa ,Fatty acid homeostasis ,Colorectal ,chemistry.chemical_classification ,Mouse Model ,Colon Cancer ,Hepatology ,Chemistry ,Azoxymethane ,Gastroenterology ,Intestinal epithelium ,Enteritis ,Tumor Burden ,Monounsaturated ,Mice, Inbred C57BL ,Oleic acid ,030104 developmental biology ,Endocrinology ,Enzyme ,Real-time polymerase chain reaction ,030220 oncology & carcinogenesis ,Female ,lipids (amino acids, peptides, and proteins) ,Tumor necrosis factor alpha ,Stearoyl-CoA desaturase-1 ,Stearoyl-CoA Desaturase ,Oleic Acid - Abstract
Background & Aims The enzyme stearoyl-coenzyme A desaturase 1 (SCD or SCD1) produces monounsaturated fatty acids by introducing double bonds into saturated bonds between carbons 9 and 10, with oleic acid as the main product. SCD1 is present in the intestinal epithelium, and fatty acids regulate cell proliferation, so we investigated the effects of SCD1-induced production of oleic acid in enterocytes in mice. Methods We generated mice with disruption of Scd1 selectively in the intestinal epithelium (iScd1–/– mice) on a C57BL/6 background; iScd1+/+ mice were used as controls. We also generated iScd1–/–ApcMin/+ mice and studied cancer susceptibility. Mice were fed a chow, oleic acid–deficient, or oleic acid–rich diet. Intestinal tissues were collected and analyzed by histology, reverse transcription quantitative polymerase chain reaction, immunohistochemistry, and mass spectrometry, and tumors were quantified and measured. Results Compared with control mice, the ileal mucosa of iScd1–/– mice had a lower proportion of palmitoleic (C16:1 n-7) and oleic acids (C18:1 n-9), with accumulation of stearic acid (C18:0); this resulted a reduction of the Δ9 desaturation ratio between monounsaturated (C16:1 n-7 and C18:1 n-9) and saturated (C16:0 and C18:0) fatty acids. Ileal tissues from iScd1–/– mice had increased expression of markers of inflammation activation and crypt proliferative genes compared with control mice. The iScd1–/– ApcMin/+ mice developed more and larger tumors than iScd1+/+ApcMin/+ mice. iScd1–/–ApcMin/+ mice fed the oleic acid-rich diet had reduced intestinal inflammation and significantly lower tumor burden compared with mice fed a chow diet. Conclusions In studies of mice, we found intestinal SCD1 to be required for synthesis of oleate in the enterocytes and maintenance of fatty acid homeostasis. Dietary supplementation with oleic acid reduces intestinal inflammation and tumor development in mice.
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- 2018
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34. Exploiting the plasticity of cholangiocytes to repair the biliary tree.
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Frau C and Vallier L
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- Humans, Animals, Regenerative Medicine, Cell Plasticity, Epithelial Cells cytology, Liver cytology, Bile Ducts cytology, Biliary Tract cytology, Organoids cytology
- Abstract
Cholangiocytes are the main cell type lining the epithelium of the biliary tree of the liver. This cell type has been implicated not only in diseases affecting the biliary tree but also in chronic liver diseases targeting other hepatic cells such as hepatocytes. However, the isolation and culture of cholangiocytes have been particularly arduous, thereby limiting the development of new therapies. The emergence of organoids has the potential to address in part this challenge. Indeed, cholangiocyte organoids can be established from both the intra- and extrahepatic regions of the biliary tree, providing an advantageous platform for disease modeling and mechanism investigations. Accordingly, recent studies on cholangiocyte organoids, together with the advent of single-cell -omics, have opened the field to exciting discoveries concerning the plastic nature of these cells and their capability to adapt to different environments and stimuli. This review will focus on describing how these plasticity properties could be exploited in regenerative medicine and cell-based therapy, opening new frontiers for treating disorders affecting the biliary tree and beyond., Competing Interests: Declaration of Competing Interest Ludovic Vallier reports a relationship with Definiens AG that includes consulting or advisory and equity or stocks. Ludovic Vallier reports a relationship with Bilitech that includes equity or stocks. Ludovic Vallier reports a relationship with Bit.bio that includes equity or stocks. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
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- 2024
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35. Correction: The thyroid hormone nuclear receptor TRα1 controls the Notch signaling pathway and cell fate in murine intestine.
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Sirakov M, Boussouar A, Kress E, Frau C, Nisar Lone I, Nadjar J, Angelov D, and Plateroti M
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- 2024
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36. Acquisition of epithelial plasticity in human chronic liver disease.
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Gribben C, Galanakis V, Calderwood A, Williams EC, Chazarra-Gil R, Larraz M, Frau C, Puengel T, Guillot A, Rouhani FJ, Mahbubani K, Godfrey E, Davies SE, Athanasiadis E, Saeb-Parsy K, Tacke F, Allison M, Mohorianu I, and Vallier L
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- Humans, Biliary Tract cytology, Biliary Tract metabolism, Biliary Tract pathology, Biopsy, Cell Plasticity, Chronic Disease, Disease Progression, Epithelial Cells metabolism, Epithelial Cells cytology, Epithelial Cells pathology, Insulin metabolism, Liver Regeneration, Organoids metabolism, Organoids pathology, Phosphatidylinositol 3-Kinases metabolism, Proto-Oncogene Proteins c-akt metabolism, RNA-Seq, Signal Transduction, Single-Cell Analysis, TOR Serine-Threonine Kinases metabolism, Cell Transdifferentiation, Hepatocytes metabolism, Hepatocytes cytology, Hepatocytes pathology, Liver pathology, Liver metabolism, Liver cytology, Liver Diseases pathology, Liver Diseases metabolism
- Abstract
For many adult human organs, tissue regeneration during chronic disease remains a controversial subject. Regenerative processes are easily observed in animal models, and their underlying mechanisms are becoming well characterized
1-4 , but technical challenges and ethical aspects are limiting the validation of these results in humans. We decided to address this difficulty with respect to the liver. This organ displays the remarkable ability to regenerate after acute injury, although liver regeneration in the context of recurring injury remains to be fully demonstrated. Here we performed single-nucleus RNA sequencing (snRNA-seq) on 47 liver biopsies from patients with different stages of metabolic dysfunction-associated steatotic liver disease to establish a cellular map of the liver during disease progression. We then combined these single-cell-level data with advanced 3D imaging to reveal profound changes in the liver architecture. Hepatocytes lose their zonation and considerable reorganization of the biliary tree takes place. More importantly, our study uncovers transdifferentiation events that occur between hepatocytes and cholangiocytes without the presence of adult stem cells or developmental progenitor activation. Detailed analyses and functional validations using cholangiocyte organoids confirm the importance of the PI3K-AKT-mTOR pathway in this process, thereby connecting this acquisition of plasticity to insulin signalling. Together, our data indicate that chronic injury creates an environment that induces cellular plasticity in human organs, and understanding the underlying mechanisms of this process could open new therapeutic avenues in the management of chronic diseases., (© 2024. The Author(s).)- Published
- 2024
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37. Phantosmia in Parkinson's Disease: A Systematic Review of the Phenomenology of Olfactory Hallucinations.
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Ercoli T, Bagella CF, Frau C, Ruiu E, Othmani S, Gusinu G, Masala C, Sechi LA, Solla P, and Defazio G
- Abstract
Olfactory dysfunction is a prevalent non-motor symptom in Parkinson's disease (PD), affecting approximately 65-90% of subjects. PD patients may also report odor perception in the absence of any external source, often referred to as olfactory hallucinations (OHs) or phantosmia. This study aims to explore the current understanding of OHs in PD and offer a comprehensive overview of their prevalence and characteristics. We conducted a systematic search of the literature published on PubMed from inception to July 2023 regarding OHs in PD, following PRISMA guidelines. From the 2875 studies identified through database searching, 29 studies fulfilled the necessary criteria and underwent data extraction. The frequency of OHs in PD patients varies widely, ranging from 0.5% to 18.2%, with female prevalence ranging from 36% to 75% of the patients. Olfactory experiences may vary widely, ranging from pleasant scents to unpleasant odors. Several studies have indicated the concurrent presence of other types of hallucinations alongside phantosmia, especially visual and auditory hallucinations. OHs in PD are a type of hallucination that has been largely overlooked. To gain a deeper understanding of OHs in PD patients, the next crucial step should involve the development and validation of a dedicated questionnaire.
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- 2023
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38. Segmentation of Substantia Nigra in Brain Parenchyma Sonographic Images Using Deep Learning.
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Gusinu G, Frau C, Trunfio GA, Solla P, and Sechi LA
- Abstract
Currently, Parkinson's Disease (PD) is diagnosed primarily based on symptoms by experts clinicians. Neuroimaging exams represent an important tool to confirm the clinical diagnosis. Among them, Brain Parenchyma Sonography (BPS) is used to evaluate the hyperechogenicity of Substantia Nigra (SN), found in more than 90% of PD patients. In this article, we exploit a new dataset of BPS images to investigate an automatic segmentation approach for SN that can increase the accuracy of the exam and its practicability in clinical routine. This study achieves state-of-the-art performance in SN segmentation of BPS images. Indeed, it is found that the modified U-Net network scores a Dice coefficient of 0.859 ± 0.037. The results presented in this study demonstrate the feasibility and usefulness of SN automatic segmentation in BPS medical images, to the point that this study can be considered as the first stage of the development of an end-to-end CAD (Computer Aided Detection) system. Furthermore, the used dataset, which will be further enriched in the future, has proven to be very effective in supporting the training of CNNs and may pave the way for future studies in the field of CAD applied to PD.
- Published
- 2023
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39. Squamous cell carcinoma of the neovagina 47 years after gender-affirming surgery.
- Author
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Arruza-Frau C, López-García A, and Morales-López R
- Abstract
A 74-year-old transgender female presented with urinary difficulty and a painful lesion at her neo-vagina, 47 years after undergoing gender-affirming vaginoplasty. Initial biopsy reported Low-Grade Squamous Intraepithelial Lesion (LGSIL), while MRI revealed no inguinal or pelvic lymphadenopathy. Patient underwent partial neo-vaginectomy with wide local excision and formal urethroplasty. Pathology revealed verrucous carcinoma of the neovagina, a rare neoplasm in transgender female patients. This case highlights the importance of considering squamous cell carcinoma in the differential diagnosis of patients presenting lesions at neo-vagina and the need of screening methods for early detection of such neoplasms., (© 2023 The Authors.)
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- 2023
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40. Olfactory Impairment Is the Main Predictor of Higher Scores at REM Sleep Behavior Disorder (RBD) Screening Questionnaire in Parkinson's Disease Patients.
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Solla P, Wang Q, Frau C, Floris V, Loy F, Sechi LA, and Masala C
- Abstract
Introduction: Olfactory impairment and REM sleep behavior disorder (RBD) are common non-motor symptoms in Parkinson's disease (PD) patients, often preceding the onset of the specific motor symptoms and, thus, crucial for strategies directed to anticipate PD diagnosis. In this context, the specific interaction between olfactory impairment and RBD has not been clearly defined., Objective: The aim of this study was to determine the possible role of olfactory impairment and other clinical characteristics as possible predictors of higher scores at RBD screening questionnaire (RBDSQ) in a large population of PD patients., Methods: In this study, 590 PD patients were included from the Parkinson's Progression Markers Initiative. Demographic and clinical features were registered. All participants completed motor and non-motor evaluations at the baseline visit. For motor assessments, the disease severity was evaluated by the Movement Disorder Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS) pars III. Regarding non-motor symptoms assessment, Montreal Cognitive Assessments (MoCA), University of Pennsylvania Smell Identification Test (UPSIT) and RBD screening questionnaire (RBDSQ) were registered., Results: Among 590 PD patients included in this study, 111 patients with possible RBD were found (18.8%). RBD was less frequent in female PD patients ( p ≤ 0.011). Among patients with or without possible RBD diagnosis, statistically significant differences in MDS-UPDRS III (23.3 ± 11.4 vs. 19.7 ± 9.1, respectively, p ≤ 0.002) and in UPSIT score (19.7 ± 8.3 vs. 22.6 ± 8.0, respectively, p ≤ 0.001) were found. Moreover, significant correlations between RBDSQ versus UPDRS III score and versus UPSIT score were observed. Multivariate linear regression analysis showed that UPSIT was the most significant predictor of higher scores at RBDSQ, while the other significant predictors were UPDRS III and age., Conclusions: The severity of olfactory impairment appears tightly correlated to RBD symptoms, highlighting the role of these biomarkers for PD patients. Additionally, according to this large study, our data confirmed that RBD in PD patients exhibits peculiar gender differences.
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- 2023
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41. Are problem buying and problem gambling addictive, impulsive, or compulsive in nature? A network analysis and latent dimension analysis study in Italian community-dwelling adults.
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Somma A, Krueger RF, Markon KE, Gialdi G, Di Leva N, Falcone E, Villa M, Frau C, and Fossati A
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- Adult, Humans, Female, Male, Independent Living, Impulsive Behavior physiology, Italy, Gambling, Obsessive-Compulsive Disorder, Substance-Related Disorders
- Abstract
Prominent scholars suggested that the impulsive-obsessive compulsive continuum may represent a framework to understand both substance and behavioral addictions. However, the characterization of pathological buying (PB) and problem gambling (PG) within the compulsive-impulsive spectrum has not been extensively investigated. To explore the relationships among PB, PG, alcohol and substance abuse, DSM-5 obsessive-compulsive and related disorders, and impulsive dimensions, a sample of 1,005 Italian community-dwelling adult participants (55.5% female), was administered self-reported measures of PB, PG, and other theoretically-relevant constructs. We expected to observe a multidimensional structure in our data; moreover, DSM-5 obsessive compulsive and related disorders were hypothesized to be accounted for by a common dimension. Three dimensions were identified and replicated across two different, non-redundant methods (i.e., exploratory graph analysis and exploratory factor analysis), namely, substance use and gambling, obsessive and compulsive phenomena, and impulsivity dimensions. Specifically, PG seemed to represent a behavioral variant of addiction vulnerability, PB seemed more akin to obsessive-compulsive spectrum disorders, and disinhibition dimension represented the common core of negative urgency, lack of premeditation, lack of perseverance, sensation seeking (SS), and positive urgency. Our findings may be helpful in improving our knowledge on the similarities and differences between PB and PG., Competing Interests: Declaration of Competing Interest Antonella Somma, Robert F. Krueger, Kristian E. Markon, Giulia Gialdi, Nicole Di Leva, Elena Falcone, Marisole Villa, Claudia Frau, and Andrea Fossati, (Copyright © 2023 Elsevier B.V. All rights reserved.)
- Published
- 2023
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42. Association between olfactory dysfunction and motor subtypes in Parkinson's disease: are non-tremor-dominant subtypes really uncorrelated to olfactory impairment?
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Frau C, Masala C, Solla P, Ercoli T, and Defazio G
- Subjects
- Humans, Smell physiology, Parkinson Disease complications, Olfaction Disorders etiology
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- 2023
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43. The joint hierarchical structure of psychopathology and dysfunctional personality domain indicators among community-dwelling adults.
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Somma A, Krueger RF, Markon KE, Gialdi G, Frau C, and Fossati A
- Subjects
- Adult, Humans, Personality, Psychopathology, Personality Inventory, Diagnostic and Statistical Manual of Mental Disorders, Independent Living, Personality Disorders
- Abstract
To examine the hierarchical structure of psychopathology and dysfunctional personality domains, 2416 Italian community-dwelling adult volunteers were administered a set of psychometrically sound psychopathology measures and the Personality Inventory for DSM-5 Brief Form+ (PID-5-BF+). Parallel analysis, minimum average partial, and very simple structure results suggested that 1-6 principal components (PCs) should be retained. Goldberg's bass-ackwards model of the joint psychopathology measure and PID-5-BF+ ipsatized domain scale correlation matrix evidenced a hierarchical structure that was consistent with the working model proposed by the Hierarchical Taxonomy of Psychopathology (HiTOP) consortium. Hierarchical agglomerative cluster analysis around latent variables of the psychopathology indicators and PID-5-BF+ domain scales recovered four latent dimensions, which were akin to the corresponding bass-ackwards components and nicely reproduced the HiTOP Internalizing, Externalizing, Thought Disorder, and Eating Pathology dimensions., (© 2022 John Wiley & Sons Ltd.)
- Published
- 2023
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44. Olfactory Impairment Correlates with Executive Functions Disorders and Other Specific Cognitive Dysfunctions in Parkinson's Disease.
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Solla P, Masala C, Ercoli T, Frau C, Bagella C, Pinna I, Loy F, and Defazio G
- Abstract
Introduction: Olfactory and cognitive disorders represent important non-motor symptoms in Parkinson's disease (PD). No clear evidence was reported about association of specific cognitive domains and olfactory impairment., Objective: The aim of this study was to evaluate the association between olfactory dysfunction and specific cognitive domains in PD patients compared to controls., Methods: 178 PD patients and 98 controls were enrolled and evaluated for odor threshold (OT), discrimination (OD), identification (OI), and TDI score using the Sniffin' Sticks test. Cognitive function was evaluated using the Montreal Cognitive Assessment scale with six sub-scores: Orientation (OIS), Attention (AIS), Language (LIS), Visuospatial (VIS), Memory (MIS), and Executive index scores (EIS)., Results: Statistically significant correlations were observed between OT versus, LIS, and between TDI score versus EIS. Multivariate linear regression analysis, including age and sex which are well-known predictors of olfactory dysfunction, showed that, among specific cognitive domains, only LIS was significant predictor for OT, VIS was a significant predictor for OD, while both EIS and AIS were significant predictors for OI, and finally only EIS was significant predictor for TDI score., Conclusions: Olfactory disorders in PD patients appear commonly related to dysfunction of specific cognitive domains, with strict association between global olfactory impairment and executive function deficits.
- Published
- 2023
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45. Biofabrication of synthetic human liver tissue with advanced programmable functions.
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Florentino RM, Morita K, Haep N, Motomura T, Diaz-Aragon R, Faccioli LAP, Collin de l'Hortet A, Cetin Z, Frau C, Vernetti L, Amler AK, Thomas A, Lam T, Kloke L, Takeishi K, Taylor DL, Fox IJ, and Soto-Gutierrez A
- Abstract
Advances in cellular engineering, as well as gene, and cell therapy, may be used to produce human tissues with programmable genetically enhanced functions designed to model and/or treat specific diseases. Fabrication of synthetic human liver tissue with these programmable functions has not been described. By generating human iPSCs with target gene expression controlled by a guide RNA-directed CRISPR-Cas9 synergistic-activation-mediator, we produced synthetic human liver tissues with programmable functions. Such iPSCs were guide-RNA-treated to enhance expression of the clinically relevant CYP3A4 and UGT1A1 genes, and after hepatocyte-directed differentiation, cells demonstrated enhanced functions compared to those found in primary human hepatocytes. We then generated human liver tissue with these synthetic human iPSC-derived hepatocytes (iHeps) and other non-parenchymal cells demonstrating advanced programmable functions. Fabrication of synthetic human liver tissue with modifiable functional genetic programs may be a useful tool for drug discovery, investigating biology, and potentially creating bioengineered organs with specialized functions., Competing Interests: A.C.-H., K.T., I.J.F., and A.S.-G. are inventors on a provisional international patent application that describes hepatic differentiation of human pluripotent stem cells and liver repopulation (PCT/US2018/018032) and a provisional international patent application that describes the use of human-induced pluripotent stem cells for highly genetic engineering (PCT/US2017/044719). A.S.-G., J.G.-L., A.C.-H., and I.J.F. are co-founders and have a financial interest in Von Baer Wolff, Inc. a company focused on biofabrication of autologous human hepatocytes from stem cells technology. I.J.F. and A.S.-G. are co-founders and have a financial interest in Pittsburgh ReLiver Inc, a company focused on programming liver failure and their interests are managed by the Conflict-of-Interest Office at the University of Pittsburgh in accordance with their policies., (© 2022 The Authors.)
- Published
- 2022
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46. Olfactory hallucinations in Parkinson's disease patients and the role of their evaluation in clinical practice.
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Solla P, Masala C, Pinna I, Frau C, Ercoli T, and Defazio G
- Subjects
- Hallucinations etiology, Humans, Parkinson Disease complications
- Published
- 2022
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47. COVID-19 pandemic preventive behaviors and causal beliefs among Italian community dwelling adults.
- Author
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Somma A, Gialdi G, Frau C, Barranca M, and Fossati A
- Subjects
- Adult, Humans, Italy, Pandemics prevention & control, SARS-CoV-2, Surveys and Questionnaires, COVID-19 prevention & control, Communicable Disease Control methods, Health Behavior
- Abstract
In an online sample of 1054 Italian community-dwelling adults, we assessed the relationships between the frequency of implementation of practices intended to prevent COVID-19 infection, degree of agreement with theories about the origin of the infections, and the frequency of use of different sources of information concerning the COVID-19 pandemic. The results showed that participants' COVID-19-related preventive behaviors and causal beliefs were significantly associated with selected demographic variables and frequency of use of specific sources of information (e.g. scientific journals vs social media).
- Published
- 2022
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48. Hepatocyte Nuclear Factor 4 alpha 2 Messenger RNA Reprograms Liver-Enriched Transcription Factors and Functional Proteins in End-Stage Cirrhotic Human Hepatocytes.
- Author
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Tafaleng EN, Mukherjee A, Bell A, Morita K, Guzman-Lepe J, Haep N, Florentino RM, Diaz-Aragon R, Frau C, Ostrowska A, Schultz JR, Martini PGV, Soto-Gutierrez A, and Fox IJ
- Subjects
- Animals, Cell Culture Techniques, Gene Regulatory Networks genetics, Hepatocytes physiology, Humans, Liver cytology, Promoter Regions, Genetic genetics, Cellular Reprogramming genetics, End Stage Liver Disease genetics, Hepatocyte Nuclear Factor 4 genetics, Liver Cirrhosis genetics, RNA, Messenger physiology
- Abstract
The only definitive therapy for end-stage liver disease is whole-organ transplantation. The success of this intervention is severely limited by the complexity of the surgery, the cost of patient care, the need for long-term immunosuppression, and the shortage of donor organs. In rodents and humans, end-stage degeneration of hepatocyte function is associated with disruption of the liver-specific transcriptional network and a nearly complete loss of promoter P1-driven hepatocyte nuclear factor 4-alpha (P1-HNF4α) activity. Re-expression of HNF4α2, the predominant P1-HNF4α, reinstates the transcriptional network, normalizes the genes important for hepatocyte function, and reverses liver failure in rodents. In this study, we tested the effectiveness of supplementary expression of human HNF4α2 messenger RNA (mRNA) in primary human hepatocytes isolated from explanted livers of patients who underwent transplant for end-stage irreversibly decompensated liver failure (Child-Pugh B, C) resulting from alcohol-mediated cirrhosis and nonalcoholic steatohepatitis. Re-expression of HNF4α2 in decompensated cirrhotic human hepatocytes corrects the disrupted transcriptional network and normalizes the expression of genes important for hepatocyte function, improving liver-specific protein expression. End-stage liver disease in humans is associated with both loss of P1-HNF4α expression and failure of its localization to the nucleus. We found that while HNF4α2 re-expression increased the amount of P1-HNF4α protein in hepatocytes, it did not alter the ability of hepatocytes to localize P1-HNF4α to their nuclei. Conclusion: Re-expression of HNF4α2 mRNA in livers of patients with end-stage disease may be an effective therapy for terminal liver failure that would circumvent the need for organ transplantation. The efficacy of this strategy may be enhanced by discovering the cause for loss of nuclear P1-HNF4α localization in end-stage cirrhosis, a process not found in rodent studies., (© 2021 The Authors. Hepatology Communications published by Wiley Periodicals LLC on behalf of American Association for the Study of Liver Diseases.)
- Published
- 2021
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49. Human Hepatocytes Isolated from Explanted Livers: A Powerful Tool to Understand End-stage Liver Disease and Drug Screening.
- Author
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Faccioli LAP, Kocas-Kilicarslan ZN, Diaz-Aragon R, Motomura T, Amirneni S, Malizio MR, Coard MC, Frau C, Haep N, Florentino RM, and Ostrowska A
- Subjects
- Drug Evaluation, Preclinical, Hepatocytes metabolism, Humans, Liver, End Stage Liver Disease metabolism, End Stage Liver Disease surgery, Liver Transplantation
- Abstract
The use of primary human hepatocytes has been hampered by limited availability of adequate numbers of fresh and viable cells due to the ongoing shortage of liver donors. Thus, there is no surplus of healthy organs from which freshly isolated cells can be prepared when needed. However, primary hepatocytes can be successfully isolated from explanted liver specimens obtained from patients receiving orthotopic liver transplantation for decompensated liver cirrhosis or for metabolic liver disease without end-stage liver disease and are a valuable resource for the pharmaceutical industry research. This review focuses on the isolation, characterization and cryopreservation of hepatocytes derived from therapeutically resected livers with various hepatic diseases.
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- 2021
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50. Therapeutic Potential of HNF4α in End-stage Liver Disease.
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Diaz-Aragon R, Coard MC, Amirneni S, Faccioli L, Haep N, Malizio MR, Motomura T, Kocas-Kilicarslan ZN, Ostrowska A, Florentino RM, and Frau C
- Subjects
- Hepatocyte Nuclear Factor 4 genetics, Humans, Liver, End Stage Liver Disease therapy, Liver Transplantation, Non-alcoholic Fatty Liver Disease therapy
- Abstract
The prevalence of end-stage liver disease (ESLD) in the US is increasing at an alarming rate. It can be caused by several factors; however, one of the most common routes begins with nonalcoholic fatty liver disease (NAFLD). ESLD is diagnosed by the presence of irreversible damage to the liver. Currently, the only definitive treatment for ESLD is orthotopic liver transplantation (OLT). Nevertheless, OLT is limited due to a shortage of donor livers. Several promising alternative treatment options are under investigation. Researchers have focused on the effect of liver-enriched transcription factors (LETFs) on disease progression. Specifically, hepatocyte nuclear factor 4-alpha (HNF4α) has been reported to reset the liver transcription network and possibly play a role in the regression of fibrosis and cirrhosis. In this review, we describe the function of HNF4α, along with its regulation at various levels. In addition, we summarize the role of HNF4α in ESLD and its potential as a therapeutic target in the treatment of ESLD.
- Published
- 2021
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