23 results on '"Ibba S"'
Search Results
2. Parvovirus B19 infection inducing pure red cells medullary aplasia in kidney transplants patient
- Author
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Ibba, S., Michittu, M.B., Murgia, M.G., Onano, B., Ponticelli, A., Olla, D., Pani, A., Badiali, M., Piredda, G.B., Ibba, S., Michittu, M.B., Murgia, M.G., Onano, B., Ponticelli, A., Olla, D., Pani, A., Badiali, M., and Piredda, G.B.
- Abstract
A 55-year-old man was admitted to the hospital in November 2010 because of an anemia resistant to erythropoietin treatment and scarcely responsive to blood transfusions. The patient had received a kidney transplant 45 days earlier and he was receiving an immunosuppression treatment with steroids, everolimus and tacrolimus. A secondary anemia was ruled out during his stay in the hospital. The clinical hypothesis was a hyporigenerative anemia due to erythropoietin antibodies. The erythropoietin treatment was stopped, the serum erythropoietin was dosed and its value was higher than normally. A bone marrow needle aspiration showed a pure acquired aplasia of the red cells. The parvovirus B19 was detected both in the serum and in the bone marrow. The patient was treated with corticosteroids (prednisone) and i.v. immunoglobulins. A gradual and slow recovery of the aplasia followed., Il caso riguarda un soggetto di sesso maschile di 55 anni portatore di trapianto renale in terapia immunosoppressiva con steroidi, everolimus e tacrolimus. Nel mese di novembre 2010, dopo circa 45 giorni dal trapianto, il paziente ha presentato un'anemia non responsiva alla terapia con eritropoietina e scarsamente responsiva alle emotrasfusioni. Gli esami praticati durante il ricovero hanno permesso di escludere una forma di anemia secondaria e fatto sospettare una forma iporigenerativa (bassi valori di reticolociti). Nell'ipotesi che si trattasse di una forma indotta dalla presenza di anticorpi anti-eritropoietina fu sospeso il farmaco e dosata l'eritropoietina sierica i cui valori risultarono superiori alla norma. L'esame dell'agoaspirato midollare evidenziò un quadro compatibile con una aplasia midollare pura della serie rossa (PRCA) di tipo acquisito. è risultata positiva sia sul siero che sul sangue midollare la ricerca del parvovirus B19. Il paziente è stato quindi trattato con corticosteroidi (prednisone) e immunoglobuline endovena (IgVena) con una graduale e lenta risoluzione del quadro di aplasia midollare.
- Published
- 2018
3. Aplasia midollare pura della serie rossa (PRCA) indotta da infezione da Parvovirus B19 in un paziente portatore di trapianto renale. Descrizione di un caso clinico
- Author
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Ibba, S., primary, Michittu, M.B., additional, Murgia, M.G., additional, Onano, B., additional, Ponticelli, A., additional, Olla, D., additional, Pani, A., additional, Badiali, M., additional, and Piredda, G.B., additional
- Published
- 2018
- Full Text
- View/download PDF
4. Evolutionary Analysis Identifies an MX2 Haplotype Associated with Natural Resistance to HIV-1 Infection
- Author
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Sironi, M, Biasin, M, Cagliani, R, Gnudi, F, Saulle, I, Ibba, S, Filippi, G, Yahyaei, S, Tresoldi, C, Riva, S, Trabattoni, D, De Gioia, L, Lo Caputo, S, Mazzotta, F, Forni, D, Pontremoli, C, Pineda, J, Pozzoli, U, Rivero-Juarez, A, Caruz, A, Clerici, M, Sironi M, Biasin M, Cagliani R, Gnudi F, Saulle I, Ibba S, Filippi G, Yahyaei S, Tresoldi C, Riva S, Trabattoni D, De Gioia L, Lo Caputo S, Mazzotta F, Forni D, Pontremoli C, Pineda JA, Pozzoli U, Rivero-Juarez A, Caruz A, Clerici M, Sironi, M, Biasin, M, Cagliani, R, Gnudi, F, Saulle, I, Ibba, S, Filippi, G, Yahyaei, S, Tresoldi, C, Riva, S, Trabattoni, D, De Gioia, L, Lo Caputo, S, Mazzotta, F, Forni, D, Pontremoli, C, Pineda, J, Pozzoli, U, Rivero-Juarez, A, Caruz, A, Clerici, M, Sironi M, Biasin M, Cagliani R, Gnudi F, Saulle I, Ibba S, Filippi G, Yahyaei S, Tresoldi C, Riva S, Trabattoni D, De Gioia L, Lo Caputo S, Mazzotta F, Forni D, Pontremoli C, Pineda JA, Pozzoli U, Rivero-Juarez A, Caruz A, and Clerici M
- Abstract
The protein product of the myxovirus resistance 2 (MX2) gene restricts HIV-1 and simian retroviruses. We demonstrate that MX2 evolved adaptively in mammals with distinct sites representing selection targets in distinct branches; selection mainly involved residues in loop 4, previously shown to carry antiviral determinants. Modeling data indicated that positively selected sites form a continuous surface on loop 4, which folds into two antiparallel a-helices protruding from the stalk domain. A population genetics-phylogenetics approach indicated that the coding region of MX2 mainly evolved under negative selection in the human lineage. Nonetheless, population genetic analyses demonstrated that natural selection operated on MX2 during the recent history of human populations: distinct selective events drove the frequency increase of two haplotypes in the populations of Asian and European ancestry. The Asian haplotype carries a susceptibility allele for melanoma; the European haplotype is tagged by rs2074560, an intronic variant. Analyses performed on three independent European cohorts of HIV-1-exposed seronegative individuals with different geographic origin and distinct exposure route showed that the ancestral (G) allele of rs2074560 protects from HIV-1 infection with a recessive effect (combined P=1.55×10-4). The same allele is associated with lower in vitro HIV-1 replication and increases MX2 expression levels in response to IFN-a. Data herein exploit evolutionary information to identify a novel host determinant of HIV-1 infection susceptibility.
- Published
- 2014
5. Towards a governance model for the European electricity transmission network in 2050
- Author
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Sijm, J.P.M., Welle, A.J. van der, De Clercq, B., Ruiz Prada, C., Papon, M., Guzzi, B., Ibba, S., Pelliccioni, M., De Vos, K., Huang, D., Rivier, M., Olmos, L., Golshani, M., Taylor, G., and Bhavanam, Y.
- Published
- 2015
6. Hashtag of instagram: From folksonomy to complex network
- Author
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Fred A.,Dietz J.,Aveiro D.,Liu K.,Filipe J.,Filipe J., Ibba, S, Orru', M, Eros Pani, F, Porru, S, Fred A.,Dietz J.,Aveiro D.,Liu K.,Filipe J.,Filipe J., Ibba, S, Orru', M, Eros Pani, F, and Porru, S
- Abstract
The Instagram is a social network for smartphones created in 2010 and acquired by Facebook in 2012. It currently has more than 300 million registered users and allows for the immediate upload of images (square, inspired by Polaroid), to which users can associate hashtags and comments. Moreover, connections can be created between users that share the same interests. In our work, we intend to analyze the hashtags entered by users: the use of such hashtags, as it happens in other social networks like Twitter, generates a folksonomy, that is a user-driven classification of information. We intend to map that folksonomy as a complex network to which we can associate all the typical analysis and evaluations of such a mathematical model. Our purpose is to use the resulting complex network as a marketing tool, in order to improve brand or product awareness.
- Published
- 2015
7. A complex network approach for museum services: A model for digital content management
- Author
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Fred A.,Dietz J.,Aveiro D.,Liu K.,Filipe J.,Filipe J., Pani, F, Porru, S, Orru', M, Ibba, S, Pani, FE, Fred A.,Dietz J.,Aveiro D.,Liu K.,Filipe J.,Filipe J., Pani, F, Porru, S, Orru', M, Ibba, S, and Pani, FE
- Abstract
In a globalized economy, cultural heritage is a strong attractor. Thanks to ICT, it is possible to trigger new development dynamics. For cultural heritage, the contribution of new technologies can offer the highest degree of distribution and access opportunities. A modern museum can actually be seen as a complex ICT system, deeply interconnected, with typically a large quantity of data to manage, extremely dynamic due to ever-changing temporary exhibitions, and with applications that feature a high level of usability for a higher visitor involvement. The aim of this position paper is to create an approach geared to provide aggregated information on the nature, range and articulation of the belongings of the museum, through a paradigm based on the concept of complex network. Applying the complex network model, it will be possible to map a corpora of items made of works of art, artifacts and any object of interest for a museum. The implications derived from the adoption of this approach are multifarious: for example, a curator could evaluate partnership opportunities in the organization of temporary exhibitions, guided paths or catalog editing through an analysis of the relations between the items in their museum and the ones in other museums.
- Published
- 2015
8. Parvovirus B19 infection inducing pure red cells medullary aplasia in kidney transplants patient
- Author
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Ibba, S., primary, Michittu, M.B., additional, Murgia, M.G., additional, Onano, B., additional, Ponticelli, A., additional, Olla, D., additional, Pani, A., additional, Badiali, M., additional, and Piredda, G.B., additional
- Published
- 2012
- Full Text
- View/download PDF
9. A Synchrosqueezed Wavelet Transform assisted machine learning framework for time series forecasting
- Author
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Stocchi, M., Lunesu, I., Ibba, S., Baralla, G., and Michele Marchesi
10. Evaluation of the effect of protective genetic variants on cart success in hiv-1-infected patients
- Author
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Lori, E. M., Cozzi Lepri, A., Tavelli, A., Mercurio, V., Ibba, S. V., Lo Caputo, S., Castagna, A., Gori, A., Marchetti, G., Venditti, C., Clerici, M., D’Arminio Monforte, A., Biasin, M., for the ICONA Founfation Study Group, Nunnari, G., F. Pellicanò., G, Lori, Em, Cozzi-Lepri, A, Tavelli, A, Mercurio, V, Ibba, Sv, Lo Caputo, S, Castelli, F, Castagna, A, Gori, A, Marchetti, G, Venditti, C, Clerici, M, Monforte, Ad, and Biasin, M
- Subjects
HAART ,HAART, Polymorphisms, ICONA, ERAP2, HIV-1 ,ERAP2 ,HIV-1 ,ICONA ,polymorphisms ,Humans ,HIV Infections ,Polymorphisms ,CD4 Lymphocyte Count
11. The bentonite deposit of S'Abba de Sa Pedra (Chiaramonti, north-eastern Sardinia.)
- Author
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Cincotti F., Ibba S., Ligas P., Padalino G., Palomba M., Cincotti F., Ibba S., Ligas P., Padalino G., and Palomba M.
- Abstract
The deposit is hosted by the upper pyroclastic facies of an Oligocene-Miocene calcalkaline volcanic unit. Measured reserves are estimated as about 1 000 000 t, with montmorillonite and K-feldspar the main minerals and minor quartz, illite and plagioclase. Chemical analysis has shown that the minerals are mainly of the Ca-Mg type. Their physical and chemical characterstics make them suitable for foundry use, for the production of animal feed and litter, as carriers and diluents in pesticide and fertiliser preparation, in iron-ore pelletising, for treating waste water, in the production of detergents and as waterproofing in waste disposal sites., The deposit is hosted by the upper pyroclastic facies of an Oligocene-Miocene calcalkaline volcanic unit. Measured reserves are estimated as about 1 000 000 t, with montmorillonite and K-feldspar the main minerals and minor quartz, illite and plagioclase. Chemical analysis has shown that the minerals are mainly of the Ca-Mg type. Their physical and chemical characterstics make them suitable for foundry use, for the production of animal feed and litter, as carriers and diluents in pesticide and fertiliser preparation, in iron-ore pelletising, for treating waste water, in the production of detergents and as waterproofing in waste disposal sites.
12. A complex network approach for museum services: A model for digital content management
- Author
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Simone Porru, Filippo Eros Pani, Simona Ibba, Matteo Orru, Fred A.,Dietz J.,Aveiro D.,Liu K.,Filipe J.,Filipe J., Pani, F, Porru, S, Orru', M, and Ibba, S
- Subjects
Emerging technologies ,Computer science ,business.industry ,Visitor pattern ,Knowledge management ,Usability ,Complex network ,Object (philosophy) ,World Wide Web ,Cultural heritage ,Exhibition ,Knowledge base ,Information and Communications Technology ,business ,Museum service - Abstract
In a globalized economy, cultural heritage is a strong attractor. Thanks to ICT, it is possible to trigger new development dynamics. For cultural heritage, the contribution of new technologies can offer the highest degree of distribution and access opportunities. A modern museum can actually be seen as a complex ICT system, deeply interconnected, with typically a large quantity of data to manage, extremely dynamic due to ever-changing temporary exhibitions, and with applications that feature a high level of usability for a higher visitor involvement. The aim of this position paper is to create an approach geared to provide aggregated information on the nature, range and articulation of the belongings of the museum, through a paradigm based on the concept of complex network. Applying the complex network model, it will be possible to map a corpora of items made of works of art, artifacts and any object of interest for a museum. The implications derived from the adoption of this approach are multifarious: for example, a curator could evaluate partnership opportunities in the organization of temporary exhibitions, guided paths or catalog editing through an analysis of the relations between the items in their museum and the ones in other museums.
13. Hashtag of instagram: From folksonomy to complex network
- Author
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Matteo Orru, Simona Ibba, Filippo Eros Pani, Simone Porru, Fred A.,Dietz J.,Aveiro D.,Liu K.,Filipe J.,Filipe J., Ibba, S, Orru', M, Eros Pani, F, and Porru, S
- Subjects
Social network ,business.industry ,Computer science ,Complex Network ,Complex network ,World Wide Web ,Product (business) ,Upload ,Knowledge Management ,Order (business) ,Instagram ,Folksonomy ,Social Tagging ,business - Abstract
The Instagram is a social network for smartphones created in 2010 and acquired by Facebook in 2012. It currently has more than 300 million registered users and allows for the immediate upload of images (square, inspired by Polaroid), to which users can associate hashtags and comments. Moreover, connections can be created between users that share the same interests. In our work, we intend to analyze the hashtags entered by users: the use of such hashtags, as it happens in other social networks like Twitter, generates a folksonomy, that is a user-driven classification of information. We intend to map that folksonomy as a complex network to which we can associate all the typical analysis and evaluations of such a mathematical model. Our purpose is to use the resulting complex network as a marketing tool, in order to improve brand or product awareness.
14. Radiologists' perceptions on AI integration: An in-depth survey study.
- Author
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Cè M, Ibba S, Cellina M, Tancredi C, Fantesini A, Fazzini D, Fortunati A, Perazzo C, Presta R, Montanari R, Forzenigo L, Carrafiello G, Papa S, and Alì M
- Subjects
- Humans, Female, Male, Surveys and Questionnaires, Adult, Middle Aged, Italy, Aged, Radiologists psychology, Artificial Intelligence, Attitude of Health Personnel
- Abstract
Purpose: To assess the perceptions and attitudes of radiologists toward the adoption of artificial intelligence (AI) in clinical practice., Methods: A survey was conducted among members of the SIRM Lombardy. Radiologists' attitudes were assessed comprehensively, covering satisfaction with AI-based tools, propensity for innovation, and optimism for the future. The questionnaire consisted of two sections: the first gathered demographic and professional information using categorical responses, while the second evaluated radiologists' attitudes toward AI through Likert-type responses ranging from 1 to 5 (with 1 representing extremely negative attitudes, 3 indicating a neutral stance, and 5 reflecting extremely positive attitudes). Questionnaire refinement involved an iterative process with expert panels and a pilot phase to enhance consistency and eliminate redundancy. Exploratory data analysis employed descriptive statistics and visual assessment of Likert plots, supported by non-parametric tests for subgroup comparisons for a thorough analysis of specific emerging patterns., Results: The survey yielded 232 valid responses. The findings reveal a generally optimistic outlook on AI adoption, especially among young radiologist (<30) and seasoned professionals (>60, p<0.01). However, while 36.2 % (84 out 232) of subjects reported daily use of AI-based tools, only a third considered their contribution decisive (30 %, 25 out of 84). AI literacy varied, with a notable proportion feeling inadequately informed (36 %, 84 out of 232), particularly among younger radiologists (46 %, p < 0.01). Positive attitudes towards the potential of AI to improve detection, characterization of anomalies and reduce workload (positive answers > 80 %) and were consistent across subgroups. Radiologists' opinions were more skeptical about the role of AI in enhancing decision-making processes, including the choice of further investigation, and in personalized medicine in general. Overall, respondents recognized AI's significant impact on the radiology profession, viewing it as an opportunity (61 %, 141 out of 232) rather than a threat (18 %, 42 out of 232), with a majority expressing belief in AI's relevance to future radiologists' career choices (60 %, 139 out of 232). However, there were some concerns, particularly among breast radiologists (20 of 232 responders), regarding the potential impact of AI on the profession. Eighty-four percent of the respondents consider the final assessment by the radiologist still to be essential., Conclusion: Our results indicate an overall positive attitude towards the adoption of AI in radiology, though this is moderated by concerns regarding training and practical efficacy. Addressing AI literacy gaps, especially among younger radiologists, is essential. Furthermore, proactively adapting to technological advancements is crucial to fully leverage AI's potential benefits. Despite the generally positive outlook among radiologists, there remains significant work to be done to enhance the integration and widespread use of AI tools in clinical practice., Competing Interests: Declaration of competing interest The authors 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 Elsevier B.V. All rights reserved.)
- Published
- 2024
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15. Adoption of AI in Oncological Imaging: Ethical, Regulatory, and Medical-Legal Challenges.
- Author
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Alì M, Fantesini A, Morcella MT, Ibba S, D'Anna G, Fazzini D, and Papa S
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- Humans, Retrospective Studies, Medical Oncology, Artificial Intelligence, Early Detection of Cancer
- Abstract
Artificial Intelligence (AI) algorithms have shown great promise in oncological imaging, outperforming or matching radiologists in retrospective studies, signifying their potential for advanced screening capabilities. These AI tools offer valuable support to radiologists, assisting them in critical tasks such as prioritizing reporting, early cancer detection, and precise measurements, thereby bolstering clinical decision-making. With the healthcare landscape witnessing a surge in imaging requests and a decline in available radiologists, the integration of AI has become increasingly appealing. By streamlining workflow efficiency and enhancing patient care, AI presents a transformative solution to the challenges faced by oncological imaging practices. Nevertheless, successful AI integration necessitates navigating various ethical, regulatory, and medical-legal challenges. This review endeavors to provide a comprehensive overview of these obstacles, aiming to foster a responsible and effective implementation of AI in oncological imaging.
- Published
- 2024
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16. How do patients perceive the AI-radiologists interaction? Results of a survey on 2119 responders.
- Author
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Ibba S, Tancredi C, Fantesini A, Cellina M, Presta R, Montanari R, Papa S, and Alì M
- Subjects
- Humans, Middle Aged, Radiologists, Surveys and Questionnaires, Radiography, Artificial Intelligence, Radiology education
- Abstract
Purpose: In this study we investigate how patients perceive the interaction between artificial intelligence (AI) and radiologists by designing a survey., Method: We created a survey focused on the application of Artificial Intelligence in radiology which consisted of 20 questions distributed in three sections:Only completed questionnaires were considered for analysis., Results: 2119 subjects completed the survey. Among them, 1216 respondents were over 60 years old, showing interest in AI even though they were not digital natives. Although >45% of the respondents reported a high level of education, only 3% said they were AI experts. 87% of respondents favored using AI to support diagnosis but would like to be informed. Only 10% would consult another specialist if their doctor used AI support. Most respondents (76%) said they would not feel comfortable if the diagnosis was made by the AI alone, highlighting the importance of the physician's role in the emotional management of the patient. Finally, 36% of respondents were willing to discuss the topic further in a focus group., Conclusion: Patients' perception of the use of AI in radiology was positive, although still strictly linked to the supervision of the radiologist. Respondents showed interest and willingness to learn more about AI in the medical field, confirming how patients' confidence in AI technology and its acceptance is central to its widespread use in clinical practice., Competing Interests: Declaration of Competing Interest The authors 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 © 2023 Elsevier B.V. All rights reserved.)
- Published
- 2023
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17. Evaluation of the effect of protective genetic variants on cART success in HIV-1-infected patients.
- Author
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Lori EM, Cozzi-Lepri A, Tavelli A, Mercurio V, Ibba SV, Lo Caputo S, Castelli F, Castagna A, Gori A, Marchetti G, Venditti C, Clerici M, D'Arminio Monforte A, and Biasin M
- Subjects
- CD4 Lymphocyte Count, Humans, HIV Infections genetics, HIV-1 genetics
- Published
- 2020
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18. Successful Treatment of Anemia With Anaplastic and Microangiopathic Characteristics in a Kidney Transplant Recipient With Parvovirus B19 Infection: A Case Report.
- Author
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Mascia G, Argiolas D, Carta E, Ibba S, and Piredda GB
- Subjects
- Adult, Anemia diagnosis, Creatinine, Erythema Infectiosum diagnosis, Fever complications, Humans, Immunoglobulins, Intravenous therapeutic use, Male, Polymerase Chain Reaction, Recurrence, Red-Cell Aplasia, Pure complications, Red-Cell Aplasia, Pure drug therapy, Red-Cell Aplasia, Pure etiology, Viral Load, Anemia etiology, Anemia therapy, Erythema Infectiosum complications, Kidney Transplantation adverse effects, Vascular Diseases complications
- Abstract
Background: The prevalence of parvovirus B19 infection in renal transplantation ranges from 2% to 30%. The age and immune status of the patient influence the severity of the clinical picture. A diagnosis is made by taking as evidence the giant proerythroblasts on a bone marrow sample and the parvovirus B19 viral replication with a polymerase chain reaction (PCR) technique at the blood level. Clinically, parvovirus B19 may appear with fever and severe anemia, which can be followed by pancytopenia and thrombotic microangiopathy in some cases. The literature reports a graft dysfunction rate ranging from 10% to 36%. An infection relapse may happen in 30% of cases., Case Presentation: We report the case of a 33-year-old patient who underwent a kidney transplant in January of 2018. After transplantation, he reached a creatinine value of 1.1 mg/dL and a hemoglobin (Hb) level of 14 g/dL. In April 2019, he developed mycoplasma pneumonia, with signs of hemolytic anemia on bone marrow aspiration. Eventually, he was admitted because of fever, arthralgia, and anemia, with serologic and bone marrow biopsy evidence of red cell aplasia secondary to parvovirus B19 infection. He was treated with 400 mg/kg intravenous immunoglobulin (IVIg) for 10 days; 18 days after the end of treatment, he reached a creatinine value of 1.15 mg/dL, an Hb of 12.5 g/dL, and a reduction of the viral load from 25,000,000 copies/mL to 1,600,000 copies/mL., Conclusions: Anemia with both an aplasic and hemolytic component was successfully treated using immunoglobulin therapy, with a significant fall in the parvovirus B19 viral load., (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Published
- 2020
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19. Hemophagocytic Lymphohistiocytosis in Renal Transplant Recipients: A 2-Case Report.
- Author
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Mascia G, Argiolas D, Carta E, Ibba S, and Piredda GB
- Subjects
- Biopsy, Bone Marrow pathology, Epstein-Barr Virus Infections complications, Epstein-Barr Virus Infections diagnosis, Etoposide therapeutic use, Fatal Outcome, Female, Fever, Humans, Immunologic Factors therapeutic use, Male, Middle Aged, Pancytopenia complications, Pancytopenia drug therapy, Rituximab therapeutic use, Sepsis, Kidney Transplantation adverse effects, Lymphohistiocytosis, Hemophagocytic diagnosis, Lymphohistiocytosis, Hemophagocytic etiology
- Abstract
Background: Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening syndrome characterized by an excessive immune activation. HLH can be triggered by a variety of events that disrupt immune homeostasis, such as infections and immunosuppression. HLH presents with heterogeneous clinical symptoms and laboratory findings such as pancytopenia, elevated liver enzymes, impaired renal function, and hyperferritinemia., Case Presentations: Case 1. A 58-year-old man was admitted because of a high fever and diarrhea. Laboratory findings showed acute renal impairment, pancytopenia, Epstein-Barr virus (EBV) DNA seropositivity with a replication index of 2 million copies/mL, and hyperferritinemia. A diagnosis of HLH was confirmed by bone marrow aspiration. He was treated with etoposide, steroids, and rituximab with initial good response and good kidney function restoration. He was discharged after 31 days but eventually died after 44 days after a disease relapse. Case 2. A 51-year-old kidney transplant recipient was admitted because of a fever of unknown origin. A worsening renal function, pancytopenia, EBV DNA of 4,356,222 copies/mL on blood, D-Dimer 7505 ng/mL, ferritinemia 9180.9 ug/L, and triglycerides 1273 mg/dL were found. Bone marrow aspiration was negative for HLH; a few days later, a diagnosis of HLH was made after a positive bone marrow biopsy. Continuous renal replacement therapy was started in the intensive care unit because of severe lactic acidosis due to sepsis. She died few days later., Conclusion: EBV infection could be a trigger for HLH in a renal transplant patient. Hyperferritinemia is useful for differential diagnosis in a septic patient. The outcome is very poor even with prompt treatment., (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Published
- 2020
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20. Human papillomavirus in spermatozoa is efficiently removed by washing: a suitable approach for assisted reproduction.
- Author
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Fenizia C, Vittori C, Oneta M, Parrilla B, Granata A, Ibba S, Biasin M, Clerici M, Trabattoni D, and Savasi V
- Subjects
- Humans, Male, Reproductive Techniques, Assisted, Alphapapillomavirus isolation & purification, Papillomavirus Infections virology, Semen virology, Spermatozoa virology
- Abstract
Research Question: Is it possible, by sperm-washing spermatozoa from clinically HPV-positive men, to obtain spermatozoa free of human papillomavirus (HPV) to be employed in assisted reproduction?, Design: This was an observational study performed on HPV-positive men. Freshly ejaculated semen was collected and readily processed by gradient separation followed by swim-up from the washed pellet. The resulting fractions were seminal plasma, cell pellet, round cells, non-motile spermatozoa and motile spermatozoa. All fractions were then tested for the presence of HPV DNA., Results: Of the 15 clinically HPV-positive subjects, 67% were positive in at least one of the seminal fractions. If any postivity was detected, the plasma was always HPV positive. No consistent pattern was observed throughout different samples in the cell pellet, round cell and non-motile spermatozoa fractions. However, after the sperm-wash procedure, the fraction of motile spermatozoa was never found to be HPV-positive., Conclusions: The sperm-washing technique, which was previously successfully used to remove human immunodeficiency virus, can efficiently remove HPV from spermatozoa. However, the present study was conducted on a small population so a larger follow-up study is recommended. HPV screening should be performed in sperm samples and, upon HPV positivity, sperm-washing should be considered before assisted reproduction techniques are used., (Copyright © 2020 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2020
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21. Analysing the role of STAT3 in HIV-1 infection.
- Author
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Ibba SV, Fenizia C, Serna Ortega P, Mercurio V, Saulle I, Lori EM, Trabattoni D, Clerici M, and Biasin M
- Subjects
- HIV-1, Humans, HIV Infections metabolism, STAT3 Transcription Factor metabolism
- Published
- 2019
22. Pachidermoperiostosis as a cause of massive joint effusion with polyarticular involvement mimicking juvenile idiopathic arthritis: A case report.
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Ibba S, Piga M, Congia M, Cauli A, and Mathieu A
- Subjects
- Arthritis etiology, Arthritis, Juvenile diagnosis, Diagnosis, Differential, Humans, Male, Young Adult, Osteoarthropathy, Primary Hypertrophic diagnosis
- Published
- 2016
- Full Text
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23. Evolutionary analysis identifies an MX2 haplotype associated with natural resistance to HIV-1 infection.
- Author
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Sironi M, Biasin M, Cagliani R, Gnudi F, Saulle I, Ibba S, Filippi G, Yahyaei S, Tresoldi C, Riva S, Trabattoni D, De Gioia L, Lo Caputo S, Mazzotta F, Forni D, Pontremoli C, Pineda JA, Pozzoli U, Rivero-Juarez A, Caruz A, and Clerici M
- Subjects
- Computational Biology methods, Evolution, Molecular, Genetic Variation, HIV-1 pathogenicity, Haplotypes, Humans, Models, Genetic, Myxovirus Resistance Proteins chemistry, Phylogeny, Selection, Genetic, Asian People genetics, Disease Resistance, HIV Infections genetics, HIV Infections immunology, Myxovirus Resistance Proteins genetics, White People genetics
- Abstract
The protein product of the myxovirus resistance 2 (MX2) gene restricts HIV-1 and simian retroviruses. We demonstrate that MX2 evolved adaptively in mammals with distinct sites representing selection targets in distinct branches; selection mainly involved residues in loop 4, previously shown to carry antiviral determinants. Modeling data indicated that positively selected sites form a continuous surface on loop 4, which folds into two antiparallel α-helices protruding from the stalk domain. A population genetics-phylogenetics approach indicated that the coding region of MX2 mainly evolved under negative selection in the human lineage. Nonetheless, population genetic analyses demonstrated that natural selection operated on MX2 during the recent history of human populations: distinct selective events drove the frequency increase of two haplotypes in the populations of Asian and European ancestry. The Asian haplotype carries a susceptibility allele for melanoma; the European haplotype is tagged by rs2074560, an intronic variant. Analyses performed on three independent European cohorts of HIV-1-exposed seronegative individuals with different geographic origin and distinct exposure route showed that the ancestral (G) allele of rs2074560 protects from HIV-1 infection with a recessive effect (combined P = 1.55 × 10(-4)). The same allele is associated with lower in vitro HIV-1 replication and increases MX2 expression levels in response to IFN-α. Data herein exploit evolutionary information to identify a novel host determinant of HIV-1 infection susceptibility., (© The Author 2014. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2014
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