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Goracci L, Petito E, Di Veroli A, Falcinelli E, Bencivenga C, Giglio E, Becattini C, De Robertis E, Vaudo G, Gresele P. A platelet lipidomics signature in patients with COVID-19. Platelets 2023; 34:2200847. [PMID: 37114418 DOI: 10.1080/09537104.2023.2200847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Ischemic cardiovascular and venous thromboembolic events are a frequent cause of death in severe COVID-19 patients. Platelet activation plays a key role in these complications, however platelet lipidomics have not been studied yet. The aim of our pilot investigation was to perform a preliminary study of platelet lipidomics in COVID-19 patients compared to healthy subjects. Lipid extraction and identification of ultrapurified platelets from eight hospitalized COVID-19 patients and eight age- and sex-matched healthy controls showed a lipidomic pattern almost completely separating COVID-19 patients from healthy controls. In particular, a significant decrease of ether phospholipids and increased levels of ganglioside GM3 were observed in platelets from COVID-19 patients. In conclusion, our study shows for the first time that platelets from COVID-19 patients display a different lipidomics signature distinguishing them from healthy controls, and suggests that altered platelet lipid metabolism may play a role in viral spreading and in the thrombotic complications of COVID-19.
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Affiliation(s)
- Laura Goracci
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Eleonora Petito
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Alessandra Di Veroli
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Emanuela Falcinelli
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Caterina Bencivenga
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Elisa Giglio
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Cecilia Becattini
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Edoardo De Robertis
- Division of Anaesthesia, Analgesia, and Intensive Care, University of Perugia, Perugia, Italy
| | - Gaetano Vaudo
- Unit of Internal Medicine, Terni University Hospital, Terni, Italy
| | - Paolo Gresele
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
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Sessa C, Zanoli L, Noto G, Alessandrello I, Galeano D, Giglio E, Giuffrida AE, Distefano G, Ficara V, Messina RM, Musumeci S, Scollo V, Zirino F, Zuppardo C, Morale W. [Contrast Media Toxicity and Its Prevention]. G Ital Nefrol 2023; 40:2023-vol5. [PMID: 38010244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Intravenous iodinated contrast media are commonly used in clinical practice, ranging from medical imaging to interventional radiology (IR) procedures and endovascular interventions. Compared with patients with normal renal function, nephropathic patients have an increased risk of acute kidney injury (AKI). Nevertheless, this condition cannot represent a limit to diagnostics or endovascular interventions. Despite the literature of the last five years, conflicting management and approaches for nephropathic patients persist, including the use of contrast agents and treatments replacing renal functions, which are often mistakenly considered as part of preventive strategies. Though the issue has been widely discussed, specialists often cope with uncertainty in handling properly the administration of contrast media and renal counselling requests. Furthermore, there is a general difficulty in distinguishing the Post-Contrast Acute Kidney Injury (PC-AKI) from the Contrast-Associated Acute Kidney Injury (CI-AKI). The present review aims to provide an update on the issue and examine strategies to reduce the acute kidney injury risk after the administration of contrast media. These strategies include the early identification of high-risk individuals, the choice of the contrast media and the proper dosage, the suspension of nephrotoxic drugs, the follow-up of the high-risk individuals, and the early identification of AKI.
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Affiliation(s)
- Concetto Sessa
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | - Luca Zanoli
- Nefrologia, Dipartimento di Medicina Clinica e Sperimentale, Università di Catania, Catania (CT)
| | - Giovanni Noto
- U.O.C. Medicina e Chirurgia d'Accettazione e Urgenza, P.O. Giovanni Paolo II, Ragusa (RG)
| | - Ivana Alessandrello
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | - Dario Galeano
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | - Elisa Giglio
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | | | - Giulio Distefano
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | - Vincenzo Ficara
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | | | - Stella Musumeci
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | - Viviana Scollo
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | - Fortunata Zirino
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | - Carmelo Zuppardo
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
| | - Walter Morale
- U.O.C. Nefrologia e Dialisi, P.O. Maggiore "Nino Baglieri", Modica, Ragusa (RG)
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Al Refaie A, Baldassini L, Mondillo C, Giglio E, De Vita M, Tomai Pitinca MD, Gonnelli S, Caffarelli C. Radiofrequency Echographic Multi Spectrometry (R.E.M.S.): New Frontiers for Ultrasound Use in the Assessment of Bone Status-A Current Picture. Diagnostics (Basel) 2023; 13:diagnostics13101666. [PMID: 37238151 DOI: 10.3390/diagnostics13101666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/22/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
Osteoporosis is a frequently occurring skeletal disease, and osteoporosis-related fractures represent a significant burden for healthcare systems. Dual-Energy X-ray Absorptiometry (DXA) is the most commonly used method for assessing bone mineral density (BMD). Today, particular attention is being directed towards new technologies, especially those that do not use radiation, for the early diagnosis of altered bone status. Radiofrequency Echographic Multi Spectrometry (REMS) is a non-ionizing technology that evaluates the bone status at axial skeletal sites by analyzing raw ultrasound signals. In this review, we evaluated the data on the REMS technique present in the literature. The literature data confirmed diagnostic concordance between BMD values obtained using DXA and REMS. Furthermore, REMS has adequate precision and repeatability characteristics, is able to predict the risk of fragility fractures, and may be able to overcome some of the limitations of DXA. In conclusion, REMS could become the method of choice for the assessment of bone status in children, in women of childbearing age or who are pregnant, and in several secondary osteoporosis conditions due to its good precision and replicability, its transportability, and the absence of ionizing radiation. Finally, REMS may allow qualitative and not just quantitative assessments of bone status.
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Affiliation(s)
- Antonella Al Refaie
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy
| | - Leonardo Baldassini
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy
| | - Caterina Mondillo
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy
| | - Elisa Giglio
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy
| | - Michela De Vita
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy
| | - Maria Dea Tomai Pitinca
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy
| | - Stefano Gonnelli
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy
| | - Carla Caffarelli
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy
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Caffarelli C, Cameli P, Al Refaie A, Giglio E, Manzana G, Mondillo C, Noacco Y, Olivieri C, Bargagli E, Gonnelli S. Bone fragility and sarcoidosis: An underestimated relationship. Front Med (Lausanne) 2022; 9:1026028. [PMID: 36465894 PMCID: PMC9714273 DOI: 10.3389/fmed.2022.1026028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2023] Open
Abstract
INTRODUCTION Sarcoidosis is a chronic multisystem inflammatory disease which may affect any organ. Also bone can be involved both directly and indirectly. Data on BMD values and fragility fractures in sarcoidosis patients are few and heterogeneous. This study aimed to characterized the presence of fracture and the relative risk factors in patients with sarcoidosis. MATERIALS AND METHODS In this single center cross-sectional study we evaluated 252 sarcoidosis patients (54.7 ± 12.1 years) compared to sex-and age matched healthy controls. We measured BMD at lumbar spine, at femoral neck and at total hip. Moreover, the presence of fragility fractures was collected during osteoporosis visit and all radiological images were examined for the presence of any vertebral fracture according to Genant's method's. Lung function measurements, including forced expiratory volume in one second (FEV1), forced vital capacity (FVC), FEV1/FVC, and diffusion capacity for carbon monoxide (DLCO) were assessed. RESULTS Bone Mineral Density T-scores were lower in patients affected by sarcoidosis with respect to those obtained in healthy controls, but the difference was statistically significant only for BMD-LS (p < 0.01) and BMD-TH (p < 0.05). Moreover, BMD values at all skeletal sites were significantly associated with DLCO (%) (p < 0.05). The prevalence of fragility fracture was higher in patients with sarcoidosis than in healthy controls (30.6 vs. 12.3%). The patients with ≥3 vertebral fracture had lower values of FVC (%), FEV1 (%), and DLCO (%). Multiple regression analyses showed that BMI was positively associated with fragility fracture, while BMD-TH, DLCO(%) and therapy use was negatively associated. CONCLUSIONS Vertebral fractures represent a frequent complication in patients with sarcoidosis. Furthermore, the number of vertebral fractures was linked with a worsening in pulmonary functional tests. Therefore, the degree of severity of the sarcoidosis disease appears to be the main determinant of bone fragility.
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Affiliation(s)
- Carla Caffarelli
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Paolo Cameli
- Respiratory Diseases and Lung Transplantation Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Antonella Al Refaie
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Elisa Giglio
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Giulio Manzana
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Caterina Mondillo
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Yari Noacco
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Carmela Olivieri
- Respiratory Diseases and Lung Transplantation Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Elena Bargagli
- Respiratory Diseases and Lung Transplantation Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Stefano Gonnelli
- Section of Internal Medicine, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
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Caffarelli C, Pitinca MDT, Refaie AA, Giglio E, Lombardi FA, Gonnelli S. LBODP055 Discrimination Effectiveness Of Radiofrequency Echographic Multispectrometry As Non Invasive Method For Osteoporosis Diagnosis Applied To Elderly Women With Type 2 Diabetes. J Endocr Soc 2022. [PMCID: PMC9629359 DOI: 10.1210/jendso/bvac150.565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is associated with an increased risk of fracture, although bone mineral density (BMD) is unaltered or higher in diabetic patients, measured by Dual-energy X-ray absorptiometry (DXA). This paradox could be explained from compromise bone microarchitecture that induce abnormal bone cell function and matrix structure, with increased osteoblast apoptosis, diminished osteoblast differentiation, and enhanced osteoclast-mediated bone resorption.1 In this context, a non-invasive method for assessing the bone density and quality on the axial reference sites (lumbar spine and proximal femur) called Radiofrequency Echographic Multi Spectrometry (REMS), has been introduced and clinically validated. This study aimed to evaluate whether the use of the REMS technique may improve the identification of osteoporosis in T2DM patients. A cohort of ABOUT 100 elderly women with T2DM and mean age 70.5 (± 7.6) years, and 100 healthy age-matched controls underwent DXA and REMS scans on the same anatomical sites (lumbar spine and proximal femur). DXA measurements were all higher in T2DM than controls; instead, all REMS measurements were lower in T2DM than controls. Moreover, the percentage of T2DM women classified as "osteoporotic", on the basis of BMDREMS was markedly higher with respect to those classified by BMDDXA (47. 0% vs 28. 0%, respectively). On the contrary, the percentage of T2DM women classified as osteopenic or normal by BMDDXA was higher with respect by BMDREMS (48.8% and 23.2% vs 38.6% and 14.5%, respectively). T2DM women with fragility fractures presented lower values of both BMDDXA and BMDREMS at the lumbar spine with respect to those without fractures; however, the difference was significant only for BMDREMS (p<0. 05). In conclusion, BMDDXA, as expected, were higher in women with T2DM, while BMDREMS were lower in women with T2DM with respect to controls. Therefore, the data suggest that REMS could be a good diagnostic tool in demonstrating the diabetes-associated bone disease, due to its ability to assess bone quality2 and that may represent a useful approach to enhance the diagnosis of osteoporosis in patients with T2DM.1. Sanches, C. P., et al. The impact of type 2 diabetes on bone metabolism. Diabetol. Metab. Syndr. 9, 1-7 (2017).2. Adami, G. et al. Radiofrequency echographic multi spectrometry for the prediction of incident fragility fractures: A 5-year follow-up study. Bone 134, 115297 (2020). Presentation: No date and time listed
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Affiliation(s)
- Carla Caffarelli
- Department of Medicine, Surgery and Neuroscience, University of Siena, Italy, Siena, Italy
| | | | - Antonella A Refaie
- Department of Medicine, Surgery and Neuroscience, University of Siena, Italy, Siena, Italy
| | - Elisa Giglio
- Department of Medicine, Surgery and Neuroscience, University of Siena, Italy, Siena, Italy
| | | | - Stefano Gonnelli
- Department of Medicine, Surgery and Neuroscience, University of Siena, Italy, Siena, Italy
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Petito E, Colonna E, Falcinelli E, Mezzasoma AM, Cesari E, Giglio E, Fiordi T, Almerigogna F, Villa A, Gresele P. Anti-severe acute respiratory syndrome coronavirus-2 adenoviral-vector vaccines trigger subclinical antiplatelet autoimmunity and increase of soluble platelet activation markers. Br J Haematol 2022; 198:257-266. [PMID: 35577507 DOI: 10.1111/bjh.18245] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/21/2022] [Accepted: 05/01/2022] [Indexed: 12/16/2022]
Abstract
To slow down the coronavirus disease 2019 (COVID-19) pandemic an unequalled vaccination campaign was initiated. Despite proven efficacy and safety, a rare but potentially fatal complication of adenoviral-vector vaccines, called vaccine-induced immune thrombotic thrombocytopenia (VITT), has emerged the pathogenesis of which seems to be related to the development of platelet-activating anti-platelet factor 4 (PF4) antibodies. While a few studies have evaluated the incidence of anti-PF4 positivity in anti-severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) vaccine recipients, to date no studies have assessed whether an antiplatelet immunological response develops and if this associates with platelet and blood clotting activation. We carried out a prospective study in healthy subjects who received the first dose of ChAdOx1 or Ad26.COV2.S or BNT162b2 vaccines to evaluate platelet-specific and non-specific immune response and in vivo platelet activation and blood clotting activation. Individuals receiving ChAdOx1 and, less so, Ad26.COV2.S developed with high frequency auto- or alloantiplatelet antibodies, increased circulating platelet-derived microvesicles and soluble P-selectin associated with mild blood clotting activation. Our study shows that an immunological reaction involving platelets is not uncommon in individuals receiving anti-SARS-CoV-2 vaccination, especially after ChAdOx1 and Ad26.COV2.S, and that it associates with in vivo platelet and blood clotting activation.
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Affiliation(s)
- Eleonora Petito
- Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Elisabetta Colonna
- Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Emanuela Falcinelli
- Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Anna Maria Mezzasoma
- Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Enrica Cesari
- Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Elisa Giglio
- Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
| | - Tiziana Fiordi
- Section of Occupational Medicine and Toxicology, University of Perugia, Perugia, Italy
| | - Fabio Almerigogna
- Unit of Allergology and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Florence, Florence, Italy
| | - Alfredo Villa
- Central Clinical Chemistry Laboratory, S.M. della Misericordia Hospital, Perugia, Italy
| | - Paolo Gresele
- Section of Internal and Cardiovascular Medicine, University of Perugia, Perugia, Italy
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DuBois RD, Tőkési K, Giglio E. Guiding of keV ions between two insulating parallel plates. Sci Rep 2022; 12:3980. [PMID: 35256714 PMCID: PMC8901676 DOI: 10.1038/s41598-022-07905-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 02/28/2022] [Indexed: 12/02/2022] Open
Abstract
Experimental data are presented for low-energy singly charged ion transport between two insulating parallel plates. Using a beam intensity of approximately 20 pA, measurements of the incoming and transmitted beams provide quantitative temporal information about the charge deposited on the plates and the guiding probability. Using a smaller beam intensity (~ 1 pA) plate charging and discharging properties were studied as a function of time. These data imply that both the charge deposition and decay along the surface and through the bulk need to be modeled as acting independently. A further reduction of beam intensity to ~ 25 fA allowed temporal imaging studies of the positions and intensities of the guided beam plus two bypass beams to be performed. SIMION software was used to simulate trajectories of the guided and bypass beams, to provide information about the amount and location of deposited charge and, as a function of charge patch voltage, the probability of beam guiding and how much the bypass beams are deflected plus to provide information about the electric fields. An equivalent electric circuit model of the parallel plates, used to associate the deposited charge with the patch voltage implies that the deposited charge is distributed primarily on the inner surface of the plates, transverse to the beam direction, rather than being distributed throughout the entire plate.
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Affiliation(s)
- R D DuBois
- Missouri University of Science and Technology, Rolla, MO, 65409, USA.
| | - K Tőkési
- Institute for Nuclear Research (ATOMKI), Debrecen, Hungary.
| | - E Giglio
- Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMAP), Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, 14000, Caen, France.
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Cafaro G, Petito E, Bistoni O, Falcinelli E, Cipriani S, Borghi MC, Bonifacio AF, Giglio E, Alunno A, Perricone C, Gerli R, Gresele P, Bartoloni E. Methotrexate improves endothelial function in early rheumatoid arthritis patients after 3 months of treatment. Arthritis Res Ther 2022; 24:236. [PMID: 36280849 PMCID: PMC9590167 DOI: 10.1186/s13075-022-02930-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 10/10/2022] [Indexed: 11/17/2022] Open
Abstract
Background Endothelial dysfunction contributes to increased cardiovascular (CV) disease in rheumatoid arthritis (RA). Angiogenic T cells (Tang) are a key regulator of vascular function via their interaction with endothelial progenitor cells (EPCs). Methotrexate (MTX) has been associated to reduced CV disease risk, but its effects on endothelial homeostasis have been poorly explored. We investigated MTX effects on endothelial homeostasis in early, treatment-naïve RA patients. Methods Fifteen untreated, early RA patients and matched healthy controls (HC) were enrolled. RA patients with long-standing disease in remission or low disease activity treated with MTX for at least 6 months were selected as controls. Circulating CD28+ and CD28null Tang cell, endothelial microparticle (EMP), EPC and soluble vascular cell adhesion molecule (sVCAM)-1 levels were measured. Results Tang percentage was higher in early RA than in HCs and significantly increased after 3-month MTX treatment. Tang cells in RA were characterized by higher percentage of CD28null and lower CD28-positive cells than HCs. MTX restored a Tang cell phenotype similar to HCs. Altered sVCAM-1, EMP and EPC were restored to levels similar to HCs after a 3-month MTX. Biomarker levels after 3 months of MTX were not different to those of patients with long-standing treatment. Conclusions MTX has a positive effect on Tang, sVCAM-1, EPCs and EMPs in RA. Restoration of imbalance between CD28 + and CD28null Tang by MTX may be one of the mechanisms underlying its favourable effects on endothelial dysfunction. These effects seem to be long-lasting and independent from systemic inflammation reduction, suggesting a direct effect of MTX on the endothelium.
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Affiliation(s)
- Giacomo Cafaro
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, University of Perugia, Perugia, Italy
| | - Eleonora Petito
- grid.9027.c0000 0004 1757 3630Section of Internal and Cardiovascular Medicine, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Onelia Bistoni
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, University of Perugia, Perugia, Italy
| | - Emanuela Falcinelli
- grid.9027.c0000 0004 1757 3630Section of Internal and Cardiovascular Medicine, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Sabrina Cipriani
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, University of Perugia, Perugia, Italy
| | - Maria Chiara Borghi
- grid.9027.c0000 0004 1757 3630Section of Internal and Cardiovascular Medicine, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Angelo F. Bonifacio
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, University of Perugia, Perugia, Italy
| | - Elisa Giglio
- grid.9027.c0000 0004 1757 3630Section of Internal and Cardiovascular Medicine, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Alessia Alunno
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, University of Perugia, Perugia, Italy ,grid.158820.60000 0004 1757 2611Internal Medicine and Nephrology Unit, Department of Life, Health & Environmental Sciences, University of L’Aquila, L’Aquila, Italy
| | - Carlo Perricone
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, University of Perugia, Perugia, Italy
| | - Roberto Gerli
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, University of Perugia, Perugia, Italy
| | - Paolo Gresele
- grid.9027.c0000 0004 1757 3630Section of Internal and Cardiovascular Medicine, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Elena Bartoloni
- grid.9027.c0000 0004 1757 3630Rheumatology Unit, University of Perugia, Perugia, Italy
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Giampieri R, Liguori C, Crocetti S, Pecci F, Bittoni A, Lenci E, Cantini L, Giulia M, Lanese A, Pinterpe G, Giglio E, Copparoni C, Lupi A, Meletani T, De Simoni E, Berardi R. P-131 External validation of prognostic ALAN score in patients with inoperable bile duct cancer treated with second-line chemotherapy. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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10
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Morale W, Sessa C, Alessandrello I, Aprile G, Galeano D, Giglio E, Ficara V, Musumeci S, Scollo V, Zuppardo C, Baglieri A, Rizza G, Bonomo P, Modica S, Patriarca G, Elia R, Aliquò A, Musso S. [The management of nephropathic patients during the Covid-19 pandemic: the experience of Ragusa]. G Ital Nefrol 2021; 38:38-02-2021-05. [PMID: 33852221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The public emergency caused by Covid-19 has forced health services to reorganize in order to separate positive patients from negative ones. In nephrology, this reorganization involves several levels of assistance concerning hospitalizations, ambulatory care and haemodialysis. Within the Complex Unit of Nephrology in Ragusa, the distribution of nephro-dialytic resources has involved four different hospitals, hence ensuring haemodialysis services for asymptomatic and pauci-symptomatic Covid-19 patients as well as for patients in Covid-Unit, Sub-Intensive Therapy and Intensive Care Unit. In this complex context, we had to create a common protocol involving all the professionals who provide assistance in our Unit, across the different structures. We also report some encouraging data that seem to indicate the effectiveness of the protocols put in place.
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Affiliation(s)
- Walter Morale
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Concetto Sessa
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Ivana Alessandrello
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Giorgio Aprile
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Dario Galeano
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Elisa Giglio
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Vincenzo Ficara
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Stella Musumeci
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Viviana Scollo
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Carmelo Zuppardo
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Andrea Baglieri
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Giovanni Rizza
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Pietro Bonomo
- Direzione Sanitaria Ospedale "Maggiore", Modica (RG), Italy
| | | | - Giuseppe Patriarca
- Direzione Generale Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Raffaele Elia
- Direzione Generale Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Angelo Aliquò
- Direzione Generale Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Salvatore Musso
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
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11
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Baleani M, Bittoni A, Prete MD, Lanese A, Meletani T, Giglio E, Cantini L, Crocetti S, Copparoni C, Lupi A, Lenci E, Bini F, Giulia M, Pecci F, Bisonni R, Alessandroni P, Graziano F, Berardi R, Giampieri R. P-75 Retrospective comparison between FLOT perioperative chemotherapy vs surgery followed by adjuvant chemotherapy: Results from a multicenter analysis. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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12
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Bittoni A, Pecci F, Giulia M, Pellei C, Zizzi A, Mandolesi A, Piva F, Murrone A, Cantini L, Lanese A, Giglio E, Meletani T, Baleani M, Crocetti S, Lenci E, Copparoni C, Lupi A, Giampieri R, Berardi R. P-117 Prognostic role of plasmatic exosomal and tissue caveolin-1 in metastatic pancreatic cancer patients. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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13
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Giampieri R, Zizzi A, Bittoni A, Pecci F, Giglio E, Giulia M, Lupi A, Mandolesi A, Copparoni C, Crocetti S, Bini F, Lanese A, Lenci E, Cantini L, Baleani M, Meletani T, Berardi R. P-27 Retrospective observational analysis of p53 mutational status as a prognostic factor in TAS-102 treated metastatic colorectal cancer patients. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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14
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Giglio E, Rangama J, Guillous S, Le Cornu T. Influence of the viscosity and charge mobility on the shape deformation of critically charged droplets. Phys Rev E 2020; 101:013105. [PMID: 32069655 DOI: 10.1103/physreve.101.013105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Indexed: 11/07/2022]
Abstract
In this work, we model and simulate the shape evolution of critically charged droplets, from the initial spherical shape to the charge emission and back to the spherical shape. The shape deformation is described using the viscous correction for viscous potential flow model, which is a potential flow approximation of the Navier-Stokes equation for incompressible Newtonian fluids. The simulated shapes are compared to snapshots of experimentally observed drop deformations. We highlight the influence of the dimensionless viscosity and charge carrier mobility of the liquid on the shape evolution of droplets and discuss the observed trends. We give an explanation as to why the observed deformation pathways of positively and negatively charged pure water droplets differ and give a hint as to why negatively charged water droplets emit more charge during charge breakup than positively charged ones.
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Affiliation(s)
- E Giglio
- Centre de Recherche sur les Ions, les Matériaux et la Photonique, Université de Caen Normandie, ENSICAEN, CEA, CNRS, 14000 Caen, France
| | - J Rangama
- Centre de Recherche sur les Ions, les Matériaux et la Photonique, Université de Caen Normandie, ENSICAEN, CEA, CNRS, 14000 Caen, France
| | - S Guillous
- Centre de Recherche sur les Ions, les Matériaux et la Photonique, Université de Caen Normandie, ENSICAEN, CEA, CNRS, 14000 Caen, France
| | - T Le Cornu
- Centre de Recherche sur les Ions, les Matériaux et la Photonique, Université de Caen Normandie, ENSICAEN, CEA, CNRS, 14000 Caen, France
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15
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Cupisti A, Bruno RM, Puntoni A, Varricchio E, Giglio E, Meniconi O, Zullo C, Barsotti M, Egidi MF, Ghiadoni L. Blood pressure phenotype reproducibility in CKD outpatients: a clinical practice report. Intern Emerg Med 2020; 15:87-93. [PMID: 31209681 DOI: 10.1007/s11739-019-02127-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 06/06/2019] [Indexed: 11/30/2022]
Abstract
Out-of-office blood pressure (BP) measurement is encouraged by recent hypertension guidelines for assessing BP phenotypes. These showed acceptable reproducibility in the short term, but few data exist about long-term reproducibility, particularly for chronic kidney disease (CKD) patients. We evaluated changes of the BP phenotypes at 6 and 12 months in 280 consecutive non-dialysis CKD outpatients (186 males, age 71 ± 12 years, eGFR 38 ± 13 ml/min/1.73), without any change in drug therapy. Elevated BP is defined as office BP > 140/90 and home BP > 135/85 mmHg for defining the following BP phenotypes: sustained uncontrolled hypertension (SUCH); white-coat uncontrolled hypertension (WUCH); masked uncontrolled hypertension (MUCH); and controlled hypertension (CH). At baseline, the prevalence of the phenotypes was SUCH 36.6%, CH 30.1%, WUCH 25.4% and MUCH 7.9%, and it was similar at 6 months and 12 months. On the other hand, individual phenotype reproducibility at 12 months was poor both overall (38.0%) and across the different phenotypes (SUCH 53.9%, WUCH 32.4% and CH 32.1%, MUCH 9.1%). Patients who were not maintaining the same phenotype (non-concordant) were not distinguished by age, sex, BMI, eGFR, presence of diabetes or cardiovascular disease, or pharmacological therapy. When reproducibility of BP phenotypes both at 6 months and at 12 months was assessed, it was very low (19.6%), particularly for MUCH (0%), CH (14%) and WUCH (15.5%), while it was 31% for SUCH. In a CKD cohort, the overall prevalence of the different BP phenotypes defined by office and home BP remains constant over time. However, only 38% of patients maintained the same phenotype at 12 months, suggesting a poor reproducibility over time for the BP phenotypes.
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Affiliation(s)
- Adamasco Cupisti
- Department of Clinical and Experimental Medicine, University of Pisa, via Roma 67, 56126, Pisa, Italy.
| | - R M Bruno
- Department of Clinical and Experimental Medicine, University of Pisa, via Roma 67, 56126, Pisa, Italy
| | - A Puntoni
- Department of Clinical and Experimental Medicine, University of Pisa, via Roma 67, 56126, Pisa, Italy
| | - E Varricchio
- Department of Clinical and Experimental Medicine, University of Pisa, via Roma 67, 56126, Pisa, Italy
| | - E Giglio
- Department of Clinical and Experimental Medicine, University of Pisa, via Roma 67, 56126, Pisa, Italy
| | - O Meniconi
- Department of Clinical and Experimental Medicine, University of Pisa, via Roma 67, 56126, Pisa, Italy
| | - C Zullo
- Department of Clinical and Experimental Medicine, University of Pisa, via Roma 67, 56126, Pisa, Italy
| | - M Barsotti
- Nephrology, Transplants and Dialysis Unity, Pisa University Hospital, via Paradisa, 56126, Pisa, Italy
| | - M F Egidi
- Nephrology, Transplants and Dialysis Unity, Pisa University Hospital, via Paradisa, 56126, Pisa, Italy
| | - L Ghiadoni
- Department of Clinical and Experimental Medicine, University of Pisa, via Roma 67, 56126, Pisa, Italy
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16
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Sessa C, Galeano D, Alessandrello I, Aprile G, Distefano G, Ficara V, Giglio E, Musumeci S, Pocorobba B, Zuppardo C, Musso S, Granata A. [Osteoporosis and chronic kidney disease: review and new therapeutic strategies]. G Ital Nefrol 2019; 36:36-4-2019-4. [PMID: 31373465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Osteoporosis affects a segment of the population in which Chronic Kidney Disease is also greatly represented. Nephropathic patients may present peculiar biochemical abnormalities related to Chronic Kidney Disease, defining the Mineral and Bone Disorder. This kind of anomalies, in the worst scenarios, configure the typical histomorphology patterns of Renal Osteodystrophy. Scientific Societies of Endocrinology have established therapy guidelines for patients with osteoporosis only based on the glomerular filtration rate and recommend avoiding the use of some drugs for the more advanced classes of nephropathy. However, there is no clear therapeutic approach for patients with advanced nephropathy and bone abnormalities. In this paper we propose a systematic review of the literature and present our proposal for managing patients with advanced nephropathy, based on eGFR and on presence of Mineral and Bone Disorder.
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Affiliation(s)
- Concetto Sessa
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Dario Galeano
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Ivana Alessandrello
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Giorgio Aprile
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Giulio Distefano
- U.O. Radiologia I, Dipartimento di Scienze Mediche, Chirurgiche e Tecnologie Avanzate "G.F. Ingrassia", Università di Catania, Catania
| | - Vincenzo Ficara
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Elisa Giglio
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Stella Musumeci
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Barbara Pocorobba
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Carmelo Zuppardo
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Salvatore Musso
- U.O.C Nefrologia e Dialisi, P.O. "Maggiore" di Modica. Azienda Sanitaria Provinciale di Ragusa, Ragusa
| | - Antonio Granata
- U.O.C. Nefrologia e Dialisi - P.O. "San Giovanni di Dio", Agrigento - Italia
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17
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Moroni G, Depetri F, Del Vecchio L, Gallelli B, Raffiotta F, Giglio E, Brunini F, D'Amico M, Longhi S, Radice A, Messa P, Sinico RA. Low-dose rituximab is poorly effective in patients with primary membranous nephropathy. Nephrol Dial Transplant 2018; 32:1691-1696. [PMID: 27387472 DOI: 10.1093/ndt/gfw251] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/28/2016] [Indexed: 11/14/2022] Open
Abstract
Background The optimal dosing and the efficacy of rituximab for primary membranous nephropathy (PMN) has not been established. This multicentric prospective study evaluates the efficacy and safety of low-dose rituximab (RTX) therapy in patients with PMN in clinical practice. Methods Thirty-four consecutive patients with PMN and nephrotic syndrome were included and received RTX (375 mg/m2) once (18 patients) or twice (16 patients). RTX was the first-line therapy for 19 (56%) and the second line for 15 (44%) patients. All patients were followed for 12 months after RTX and 24 for at least 18 months (mean 23.9 ± 18.6 months). Results At 12 months, 5 patients (14.7%) achieved complete response, 10 (29.4%) partial and 19 (55.8%) no response. Response occurred ∼6 months after RTX. At 24 months, the clinical situation was unchanged: two non-responders achieved partial response and two responders relapsed. Responders had significantly higher baseline GFR and lower anti-PLA2R antibodies compared with non-responders. Outcome was similar between one or two doses of RTX (non-responders 55.5 versus 56%, respectively) and between patients who had received previous therapy versus those receiving RTX as first-line therapy (non-responders 40 versus 68%, respectively). In the 15 patients already treated, the response to RTX was comparable to that of previous therapies. Conclusion Low-dose RTX obtains remission in <50% of PMN patients. Probably, higher doses and longer treatments are needed to induce and maintain a response. The balance between the costs and benefits should guide the selection of the patient and the optimal dosage.
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Affiliation(s)
- Gabriella Moroni
- Nephrological Unit, Fondazione Ca' Granda IRCCS Ospedale Maggiore Policlinico Milano, Italy
| | - Federica Depetri
- Nephrological Unit, Fondazione Ca' Granda IRCCS Ospedale Maggiore Policlinico Milano, Italy
| | - Lucia Del Vecchio
- Department of Nephrology and Dialysis, A. Manzoni Hospital, Lecco, Italy
| | | | - Francesca Raffiotta
- Nephrological Unit, Fondazione Ca' Granda IRCCS Ospedale Maggiore Policlinico Milano, Italy
| | - Elisa Giglio
- Nephrological Unit, Fondazione Ca' Granda IRCCS Ospedale Maggiore Policlinico Milano, Italy
| | - Francesca Brunini
- Clinical Immunology Unit & Renal Unit, S. Carlo Borromeo Hospital, Milano, Italy
| | | | - Selena Longhi
- Department of Nephrology and Dialysis, A. Manzoni Hospital, Lecco, Italy
| | - Antonella Radice
- Microbiology and Virology Department, S. Carlo Borromeo Hospital, Milano, Italy
| | - Piergiorgio Messa
- Nephrological Unit, Fondazione Ca' Granda IRCCS Ospedale Maggiore Policlinico Milano, Italy
| | - Renato Alberto Sinico
- Department of Medicine and Surgery, Università degli Studi di Milano, Monza (MB), Italy
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18
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Cantini L, Cantini L, Giampieri R, Palladino M, Del Prete M, Bittoni A, Giglio E, Meletani T, Baleani G, Maccaroni E, Di Pietro Paolo M, Berardi R. Locoregional treatments and sites of metastatic involvement in metastatic gastric cancer patients: do they influence survival? Ann Oncol 2017. [DOI: 10.1093/annonc/mdx425.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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19
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Moroni G, Doria A, Giglio E, Imbasciati E, Tani C, Zen M, Strigini F, Zaina B, Tincani A, Gatto M, de Liso F, Grossi C, Meroni PL, Cabiddu G, Messa P, Ravani P, Mosca M. Maternal outcome in pregnant women with lupus nephritis. A prospective multicenter study. J Autoimmun 2016; 74:194-200. [DOI: 10.1016/j.jaut.2016.06.012] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 06/17/2016] [Accepted: 06/21/2016] [Indexed: 01/31/2023]
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20
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Guillous S, Bourin C, Ban D'Etat B, Benyagoub A, Cassimi A, Feierstein C, Gardés E, Giglio E, Girard S, Grygiel C, Houel A, Lebius H, Méry A, Monnet I, Ramillon JM, Rangama J, Ropars F, Verzeroli E, Viteau M, Delobbe A. A new setup for localized implantation and live-characterization of keV energy multiply charged ions at the nanoscale. Rev Sci Instrum 2016; 87:113901. [PMID: 27910696 DOI: 10.1063/1.4966675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An innovative experimental setup, PELIICAEN, allowing the modification of materials and the study of the effects induced by multiply charged ion beams at the nanoscale is presented. This ultra-high vacuum (below 5 × 10-10 mbar) apparatus is equipped with a focused ion beam column using multiply charged ions and a scanning electron microscope developed by Orsay Physics, as well as a scanning probe microscope. The dual beam approach coupled to the scanning probe microscope achieves nanometer scale in situ topological analysis of the surface modifications induced by the ion beams. Preliminary results using the different on-line characterization techniques to study the formation of nano-hillocks on silicon and mica substrates are presented to illustrate the performances of the setup.
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Affiliation(s)
- S Guillous
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - C Bourin
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - B Ban D'Etat
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - A Benyagoub
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - A Cassimi
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - C Feierstein
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - E Gardés
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - E Giglio
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - S Girard
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - C Grygiel
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - A Houel
- Orsay Physics (Tescan-Orsay Holding), 95 Avenue des Monts Auréliens, ZA Saint-Charles F-13710, Fuveau, France
| | - H Lebius
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - A Méry
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - I Monnet
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - J-M Ramillon
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - J Rangama
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - F Ropars
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - E Verzeroli
- Orsay Physics (Tescan-Orsay Holding), 95 Avenue des Monts Auréliens, ZA Saint-Charles F-13710, Fuveau, France
| | - M Viteau
- Orsay Physics (Tescan-Orsay Holding), 95 Avenue des Monts Auréliens, ZA Saint-Charles F-13710, Fuveau, France
| | - A Delobbe
- Orsay Physics (Tescan-Orsay Holding), 95 Avenue des Monts Auréliens, ZA Saint-Charles F-13710, Fuveau, France
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21
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Cassai M, Prisco G, Pennazio R, Giglio E, Nante N. Chronic Care Model: experiences in a district of Central Italy. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw165.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Moroni G, Doria A, Giglio E, Tani C, Zen M, Strigini F, Zaina B, Tincani A, de Liso F, Matinato C, Grossi C, Gatto M, Castellana P, Limardo M, Meroni PL, Messa P, Ravani P, Mosca M. Fetal outcome and recommendations of pregnancies in lupus nephritis in the 21st century. A prospective multicenter study. J Autoimmun 2016; 74:6-12. [PMID: 27496151 DOI: 10.1016/j.jaut.2016.07.010] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 07/24/2016] [Accepted: 07/25/2016] [Indexed: 01/12/2023]
Abstract
The aim of this multicenter study was to assess the present risk of fetal complications and the inherent risk factors in pregnant women with lupus nephritis. Seventy-one pregnancies in 61women (59 Caucasians and 2 Asians) with lupus nephritis were prospectively followed between October 2006 and December 2013. All patients received a counselling visit within 3 months before the beginning of pregnancy and were followed by a multidisciplinary team. At baseline mild active nephritis was present in 15 cases (21.1%). Six pregnancies (8.4%) resulted in fetal loss. Arterial hypertension at baseline (P = 0.003), positivity for lupus anticoagulant (P = 0.001), anticardiolipin IgG antibodies (P = 0.007), antibeta2 IgG (P = 0.018) and the triple positivity for antiphospholipid antibodies (P = 0.004) predicted fetal loss. Twenty pregnancies (28.2%) ended pre-term and 12 newborns (16.4%) were small for gestational age. Among the characteristics at baseline, high SLE disease activity index (SLEDAI) score (P = 0.027), proteinuria (P = 0.045), history of renal flares (P = 0.004), arterial hypertension (P = 0.009) and active lupus nephritis (P = 0.000) increased the probability of preterm delivery. Odds for preterm delivery increased by 60% for each quarterly unit increase in SLEDAI and by 15% for each quarterly increase in proteinuria by 1 g per day. The probability of having a small for gestational age baby was reduced by 85% in women who received hydroxychloroquine therapy (P = 0.023). In this study, the rate of fetal loss was low and mainly associated with the presence of antiphospholipid antibodies. Preterm delivery remains a frequent complication of pregnancies in lupus. SLE and lupus nephritis activity are the main risk factors for premature birth. Arterial hypertension predicted both fetal loss and preterm delivery. Based on our results the key for a successful pregnancy in lupus nephritis is a multidisciplinary approach with close medical, obstetric and neonatal monitoring. This entails: a) a preconception evaluation to establish and inform women about pregnancy risks; b) planning pregnancy during inactive lupus nephritis, maintained inactive with the lowest possible dosage of allowed drugs; c) adequate treatment of known risk factors (arterial hypertension, antiphospholipid and antibodies); d) close monitoring during and after pregnancy to rapidly identify and treat SLE flares and obstetric complications.
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Affiliation(s)
- Gabriella Moroni
- Nephrological Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - Andrea Doria
- Department of Medicine-DIMED, Division of Rheumatology, University of Padova, Italy
| | - Elisa Giglio
- Nephrological Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Chiara Tani
- Department of Clinical and Experimental Medicine, Rheumatology Unit, University of Pisa, Italy
| | - Margherita Zen
- Department of Medicine-DIMED, Division of Rheumatology, University of Padova, Italy
| | - Francesca Strigini
- Department of Reproductive Medicine and Child Development Division of Obstetrics and Gynecology, University of Pisa, Italy
| | - Barbara Zaina
- Department of Obstetrics and Gynecology Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Angela Tincani
- Rheumatology and Clinical Immunology Unit, Spedali Civili of Brescia, Italy
| | - Federica de Liso
- Laboratory of Clinical Chemistry and Microbiology, Fondazione IRCCS Ca' Granda Ospedale, Maggiore Policlinico, Milan, Italy
| | - Caterina Matinato
- Laboratory of Clinical Chemistry and Microbiology, Fondazione IRCCS Ca' Granda Ospedale, Maggiore Policlinico, Milan, Italy
| | - Claudia Grossi
- Experimental Laboratory of Immunological and Rheumatologic Researches, IRCCS Istituto, Auxologico Italiano, Milan, Italy
| | - Mariele Gatto
- Department of Medicine-DIMED, Division of Rheumatology, University of Padova, Italy
| | - Paola Castellana
- Dipartimento di Scienze della Salute, Azienda Ospedaliera San Paolo, Milan, Italy
| | - Monica Limardo
- Nephrology, Azienda Ospedaliera della Provincia di Lecco, Lecco, Italy
| | - Pier Luigi Meroni
- Experimental Laboratory of Immunological and Rheumatologic Researches, IRCCS Istituto, Auxologico Italiano, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Piergiorgio Messa
- Nephrological Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Pietro Ravani
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada; Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Marta Mosca
- Department of Clinical and Experimental Medicine, Rheumatology Unit, University of Pisa, Italy
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Moroni G, Giglio E, Mosca M, Doria A, Ravani P, Tincani A, Cabiddu G, Limardo M, Castellana P, Izzo C, Catapano F, Del Giudice A, Tani C, Zen M, Imbasciati E, Messa P. SaO046PREGNANCY IN LUPUS NEPHRITIS: RESULTS OF A MULTICENTER PROSPECTIVE OBSERVATIONAL STUDY. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv154.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Campise M, Giglio E, Trespidi L, Messa P, Moroni G. Pregnancies in women receiving renal transplant for lupus nephritis: description of nine pregnancies and review of the literature. Lupus 2015; 24:1210-3. [DOI: 10.1177/0961203315583542] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Accepted: 03/30/2015] [Indexed: 11/17/2022]
Abstract
Background Few data are available on pregnancy in renal transplanted women for lupus nephritis (LN). Methods Among 38 women with LN who received a renal transplant in our Unit, three had nine pregnancies. During the pregnancies, patients were followed by a multidisciplinary team including gynecologists and nephrologists. Results Two patients received a living related and one a deceased kidney transplant. The immunosuppressive therapy consisted of steroids calcinurin inhibithors and mycophenolate mofetil. The last drug was substituted with azathioprine in prevision of pregnancy. All patients had normal renal function and urinalysis. In two patients some signs of immunological activity persisted after transplantation. Five pregnancies ended in miscarriage and four in live births. Two pregnancies were uneventful. Pre-eclampsia occurred in a hypertensive patient in two pregnancies that ended in preterm delivery in one case and in a small for gestation age in both cases. And finally, follow-up graft function and urinalysis continued to be normal in all patients. Conclusions After renal transplantation our LN women continue to have frequent miscarriages. The other pregnancies ended in live births and, with the exception of pre-eclampsia in a hypertensive patient, no renal or extra-renal complications occurred during or after pregnancy, even in cases with active immunological tests.
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Affiliation(s)
- M Campise
- Department of Nephrology and Dialysis, Fondazione Ca’ Granda IRCCS Ospedale Maggiore, Milan, Italy
| | - E Giglio
- Department of Nephrology and Dialysis, Fondazione Ca’ Granda IRCCS Ospedale Maggiore, Milan, Italy
| | - L Trespidi
- Department of Obstetric and Gynecology, Fondazione Ca’ Granda IRCCS Ospedale Maggiore, Milan, Italy
| | - P Messa
- Department of Nephrology and Dialysis, Fondazione Ca’ Granda IRCCS Ospedale Maggiore, Milan, Italy
| | - G Moroni
- Department of Nephrology and Dialysis, Fondazione Ca’ Granda IRCCS Ospedale Maggiore, Milan, Italy
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Moroni G, Raffiotta F, Trezzi B, Giglio E, Mezzina N, Del Papa N, Meroni P, Messa P, Sinico AR. Rituximab vs mycophenolate and vs cyclophosphamide pulses for induction therapy of active lupus nephritis: a clinical observational study. Rheumatology (Oxford) 2014; 53:1570-7. [PMID: 24505125 DOI: 10.1093/rheumatology/ket462] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE We report the first comparison between rituximab (RTX) and either MMF or CYC pulses in the treatment of active LN. METHODS Fifty-four patients with active LN received three methylprednisolone pulses for 3 consecutive days followed by oral prednisone and RTX 1 g at days 3 and 18 (17 patients) or MMF 2-2.5 g/day (17 patients) or six CYC pulses (0.5 g every fortnight) (20 patients). At 4 months MMF, AZA or ciclosporin were associated to prednisone as a consolidation/maintenance therapy in all groups. The outcomes of the three groups were compared at 3 and 12 months. RESULTS Patients in the RTX group were older, had a longer duration of SLE and LN, had more renal flares, had higher activity and had higher chronicity indexes at renal biopsy than the other two groups. Four patients in each group had acute renal dysfunction and ∼50% had nephrotic syndrome. At 3 months, proteinuria was reduced by 50% in 58.8% of patients on RTX, in 64.7% on MMF and in 63.1% on CYC. At 12 months, complete remission was present in 70.6% of patients on RTX, in 52.9% on MMF, and in 65% on CYC. Partial remission was reached in 29.4% on RTX, 41.2% on MMF, and 25% on CYC. CONCLUSION RTX seems to be at least as effective as MMF and CYC pulses in inducing remission. Considering that patients treated with RTX had more negative renal prognostic factors, this drug should be considered a viable alternative for the treatment of active LN.
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Affiliation(s)
- Gabriella Moroni
- Divisione di Nefrologia & Dialisi, IRCCS Fondazione Ca' Granda, Ospedale Maggiore, Mangiagalli, Regina Elena, Divisone di Nefrologia e Immunologia clinica, Ospedale San Carlo Borromeo, Dipartimento di Reumatologia, Unita' Operativa di Day Hospital, Istituto G. Pini and Dipartimento di Reumatologia, Istituto G. Pini and IRCCS Istituto Auxologico Italiano, Milano, Italy.
| | - Francesca Raffiotta
- Divisione di Nefrologia & Dialisi, IRCCS Fondazione Ca' Granda, Ospedale Maggiore, Mangiagalli, Regina Elena, Divisone di Nefrologia e Immunologia clinica, Ospedale San Carlo Borromeo, Dipartimento di Reumatologia, Unita' Operativa di Day Hospital, Istituto G. Pini and Dipartimento di Reumatologia, Istituto G. Pini and IRCCS Istituto Auxologico Italiano, Milano, Italy
| | - Barbara Trezzi
- Divisione di Nefrologia & Dialisi, IRCCS Fondazione Ca' Granda, Ospedale Maggiore, Mangiagalli, Regina Elena, Divisone di Nefrologia e Immunologia clinica, Ospedale San Carlo Borromeo, Dipartimento di Reumatologia, Unita' Operativa di Day Hospital, Istituto G. Pini and Dipartimento di Reumatologia, Istituto G. Pini and IRCCS Istituto Auxologico Italiano, Milano, Italy
| | - Elisa Giglio
- Divisione di Nefrologia & Dialisi, IRCCS Fondazione Ca' Granda, Ospedale Maggiore, Mangiagalli, Regina Elena, Divisone di Nefrologia e Immunologia clinica, Ospedale San Carlo Borromeo, Dipartimento di Reumatologia, Unita' Operativa di Day Hospital, Istituto G. Pini and Dipartimento di Reumatologia, Istituto G. Pini and IRCCS Istituto Auxologico Italiano, Milano, Italy
| | - Nicoletta Mezzina
- Divisione di Nefrologia & Dialisi, IRCCS Fondazione Ca' Granda, Ospedale Maggiore, Mangiagalli, Regina Elena, Divisone di Nefrologia e Immunologia clinica, Ospedale San Carlo Borromeo, Dipartimento di Reumatologia, Unita' Operativa di Day Hospital, Istituto G. Pini and Dipartimento di Reumatologia, Istituto G. Pini and IRCCS Istituto Auxologico Italiano, Milano, Italy
| | - Nicoletta Del Papa
- Divisione di Nefrologia & Dialisi, IRCCS Fondazione Ca' Granda, Ospedale Maggiore, Mangiagalli, Regina Elena, Divisone di Nefrologia e Immunologia clinica, Ospedale San Carlo Borromeo, Dipartimento di Reumatologia, Unita' Operativa di Day Hospital, Istituto G. Pini and Dipartimento di Reumatologia, Istituto G. Pini and IRCCS Istituto Auxologico Italiano, Milano, Italy
| | - Pierluigi Meroni
- Divisione di Nefrologia & Dialisi, IRCCS Fondazione Ca' Granda, Ospedale Maggiore, Mangiagalli, Regina Elena, Divisone di Nefrologia e Immunologia clinica, Ospedale San Carlo Borromeo, Dipartimento di Reumatologia, Unita' Operativa di Day Hospital, Istituto G. Pini and Dipartimento di Reumatologia, Istituto G. Pini and IRCCS Istituto Auxologico Italiano, Milano, Italy
| | - Piergiorgio Messa
- Divisione di Nefrologia & Dialisi, IRCCS Fondazione Ca' Granda, Ospedale Maggiore, Mangiagalli, Regina Elena, Divisone di Nefrologia e Immunologia clinica, Ospedale San Carlo Borromeo, Dipartimento di Reumatologia, Unita' Operativa di Day Hospital, Istituto G. Pini and Dipartimento di Reumatologia, Istituto G. Pini and IRCCS Istituto Auxologico Italiano, Milano, Italy
| | - Alberto Renato Sinico
- Divisione di Nefrologia & Dialisi, IRCCS Fondazione Ca' Granda, Ospedale Maggiore, Mangiagalli, Regina Elena, Divisone di Nefrologia e Immunologia clinica, Ospedale San Carlo Borromeo, Dipartimento di Reumatologia, Unita' Operativa di Day Hospital, Istituto G. Pini and Dipartimento di Reumatologia, Istituto G. Pini and IRCCS Istituto Auxologico Italiano, Milano, Italy
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Galbis E, Giglio E, Gervais B. A diabatic parameterization of the twofold ground state potential energy surface of the H2O-OH molecular complex. J Chem Phys 2013; 139:164313. [DOI: 10.1063/1.4826319] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Moroni G, Longhi S, Giglio E, Messa P, Ponticelli C. What happens after complete withdrawal of therapy in patients with lupus nephritis. Clin Exp Rheumatol 2013; 31:S75-S81. [PMID: 24129143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 09/12/2013] [Indexed: 06/02/2023]
Abstract
OBJECTIVES Whether and when is it possible to completely stop immunosuppression in patients with lupus nephritis is still poorly defined. METHODS An attempt to slowly and progressively eliminate steroids and immunosuppressive drugs was tried in 73 of 161 (45.3%) patients with lupus nephritis who achieved a stable clinical remission defined as normal serum creatinine, proteinuria <0.5g/24h, inactive urine sediment, and no clinical signs of extra-renal activity of SLE for at least 12 months. RESULTS Twenty-one out of the 73 patients (28.7%) who met the criteria for withdrawal of treatment developed flares during the phase of progressive reduction of therapy and their treatment was reinforced. Twenty patients entered remission again; the last patient was lost to follow-up at achievement of partial remission. In the other 52 of the 73 patients (71.2%), it was possible to completely withdraw treatment. Of these, 32 patients (group A) did not resume therapy for the subsequent follow-up (median 101.8 months); the other 20 patients (group B) had at least one flare, in median 37 months after withdrawing therapy, and had to be retreated. At the last observation, after a median follow-up of 286 months, 10 of these 20 patients were off therapy. At the last observation, two patients in group A and two in group B had died, no patient of group A and two of group B had developed renal insufficiency (serum creatinine 2.5 and 3 mg/dl, respectively). Compared to patients in group B, group A patients received longer treatment (98.1 vs. 31.0 months; p=0.01), had longer remission (52.8 vs. 12.0 months; p=0.000) before withdrawal of therapy, and continued chloroquine after stopping therapy (52% vs. 10%; p=0.004). In comparison to patients who never stopped therapy, patients who were able to interrupt treatment had lower risk of chronic renal insufficiency (3.8% vs. 28.4%; p=0.000), end-stage renal disease (0 vs. 12.8%; p=0.01), arterial hypertension (32.7% vs. 66.9%; p=0.000) and cardiovascular events (11.5% vs. 27.5%; p=0.04). CONCLUSIONS Complete withdrawal of therapy is feasible in selected patients who achieved stable remission after long-term treatment. The reduction of treatment must be done in a very gradual manner, progressively and under strict medical surveillance. The withdrawal of therapy allows the patients to reduce renal and extra-renal damage accrual. Treatment with chloroquine may help to maintain remission in patients who discontinue steroids and immunosuppressive drugs.
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Affiliation(s)
- Gabriella Moroni
- Division of Nephrology, Fondazione Ca' Granda Ospedale Maggiore IRCCS, Milano, Italy.
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Galbis E, Douady J, Jacquet E, Giglio E, Gervais B. Potential energy curves and spin-orbit coupling of light alkali-heavy rare gas molecules. J Chem Phys 2013; 138:014314. [PMID: 23298048 DOI: 10.1063/1.4773019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The potential energy curves of the X, A, and B states of alkali-rare gas diatomic molecules, MKr and MXe, are investigated for M = Li, Na, K. The molecular spin-orbit coefficients a(R)=<(2)Π(½)|Ĥ(SO)|(2)Π(½)> and b(R)=<(2)Π(-½)|Ĥ(SO)|(2)Σ(½)> are calculated as a function the interatomic distance R. We show that a(R) increases and b(R) decreases as R decreases. This effect becomes less and less important as the mass of the alkali increases. A comparison of the rovibrational properties deduced from our calculations with experimental measurements recorded for NaKr and NaXe shows the quality of the calculations.
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Affiliation(s)
- E Galbis
- CIMAP, unité mixte CEA-CNRS-ENSICAEN-UCBN 6252 BP 5133, F-14070 Caen, Cedex 05, France
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Jacquet E, Zanuttini D, Douady J, Giglio E, Gervais B. Spectroscopic properties of alkali atoms embedded in Ar matrix. J Chem Phys 2011; 135:174503. [DOI: 10.1063/1.3655467] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Abstract
We investigate the relaxation of photoexcited Li(2)(+) chromophores solvated in Ne(n) clusters (n = 2-22) by means of molecular dynamics with surface hopping. The simplicity of the electronic structure of these ideal systems is exploited to design an accurate and computationally efficient model. These systems present two series of conical intersections between the states correlated with the Li+Li(2s) and Li+Li(2p) dissociation limits of the Li(2)(+) molecule. Frank-Condon transition from the ground state to one of the three lowest excited states, hereafter indexed by ascending energy from 1 to 3, quickly drives the system toward the first series of conical intersections, which have a tremendous influence on the issue of the dynamics. The states 1 and 2, which originate in the Frank-Condon area from the degenerated nondissociative 1(2)Π(u) states of the bare Li(2)(+) molecule, relax mainly to Li+Li(2s) with a complete atomization of the clusters in the whole range of size n investigated here. The third state, which originates in the Frank-Condon area from the dissociative 1(2)Σ(u)(+) state of the bare Li(2)(+) molecule, exhibits a richer relaxation dynamics. Contrary to intuition, excitation into state 3 leads to less molecular dissociation, though the amount of energy deposited in the cluster by the excitation process is larger than for excitation into state 1 and 2. This extra amount of energy allows the system to reach the second series of conical intersections so that approximately 20% of the clusters are stabilized in the 2(2)Σ(g)(+) state potential well for cluster sizes n larger than 6.
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Affiliation(s)
- D Zanuttini
- CIMAP, unité mixte CEA-CNRS-ENSICAEN-UCBN 6252 BP 5133, F-14070 Caen, Cedex 05, France
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Zanuttini D, Douady J, Jacquet E, Giglio E, Gervais B. Structure and photoabsorption properties of cationic alkali dimers solvated in neon clusters. J Chem Phys 2010; 133:174503. [DOI: 10.1063/1.3490251] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gervais B, Giglio E, Adoui L, Cassimi A, Duflot D, Galassi ME. The H2O2+ potential energy surfaces dissociating into H+/OH+: Theoretical analysis of the isotopic effect. J Chem Phys 2009; 131:024302. [DOI: 10.1063/1.3157164] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Douady J, Jacquet E, Giglio E, Zanuttini D, Gervais B. Solvation of Na2+ in Arn clusters. I. Structures and spectroscopic properties. J Chem Phys 2008; 129:184303. [DOI: 10.1063/1.3005381] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Giglio E, Gervais B, Rangama J, Manil B, Huber BA, Duft D, Müller R, Leisner T, Guet C. Shape deformations of surface-charged microdroplets. Phys Rev E Stat Nonlin Soft Matter Phys 2008; 77:036319. [PMID: 18517523 DOI: 10.1103/physreve.77.036319] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2007] [Revised: 12/18/2007] [Indexed: 05/26/2023]
Abstract
We present the deformation pathway of critically charged glycol and water droplets from the onset of the Rayleigh instability and compare it to numerical results, obtained for perfectly conducting inviscid droplets. In this simple model presented here, the time evolution of the droplet shape is given by the velocity potential equation. The Laplace equation for the velocity potential is solved by expanding the potential onto harmonic functions. For the part of the pathway dominated by electrostatic pressure, the calculations reproduce the experimental data nicely, obtained for both, glycol and water microdroplets. We find that the droplet shape and in particular the tips, just before charge emission, are well fitted by a lemon shape. We stress that the tip is tangent to a cone of 39 degrees and thus significantly narrower than a Taylor cone.
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Affiliation(s)
- E Giglio
- Centre Interdisciplinaire de Recherche Ions Lasers (CIRIL), CEA-CNRS-ENSICAEN, Caen, France
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Adoui L, Legendre S, Tarisien M, Cassimi A, Galassi ME, Giglio E, Gervais B. High LET highly charged ion-induced ionization and fragmentation of water molecules and clusters. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1742-6596/88/1/012023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Galantini L, Giglio E, Pavel NV. Comment on "Two-dimensional NMR study on the structures of micelles of sodium taurocholate". J Phys Chem B 2007; 109:9849-50. [PMID: 16852186 DOI: 10.1021/jp0477708] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- L Galantini
- Dipartimento di Chimica, Università di Roma La Sapienza, P. le A. Moro 5, 00185 Roma, Italy
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Laurent G, Fernández J, Legendre S, Tarisien M, Adoui L, Cassimi A, Fléchard X, Frémont F, Gervais B, Giglio E, Grandin JP, Martín F. Kinematically complete study of dissociative ionization of by ion impact. Phys Rev Lett 2006; 96:173201. [PMID: 16712294 DOI: 10.1103/physrevlett.96.173201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2005] [Indexed: 05/09/2023]
Abstract
We present a kinematically complete study of dissociative ionization of D(2) by 13.6 MeV/u S(15+) ions. The experiment allows us to unravel the competing mechanisms, namely, direct single ionization, autoionization of doubly excited states, ionization excitation, and double ionization, and to analyze the corresponding electron angular distribution from fixed-in-space molecules. The conclusions are supported by theoretical calculations in which the correlated motion of all electrons and nuclei and the interferences between them are described from first principles.
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Affiliation(s)
- G Laurent
- Centre Interdisciplinaire de Recherche Ions Lasers (CIRIL)-CEA-CNRS-ENSICaen, France
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Gervais B, Giglio E, Jacquet E, Ipatov A, Reinhard PG, Suraud E. Simple DFT model of clusters embedded in rare gas matrix: Trapping sites and spectroscopic properties of Na embedded in Ar. J Chem Phys 2004; 121:8466-80. [PMID: 15511170 DOI: 10.1063/1.1789473] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We present a theoretical model to study the dynamics of metallic clusters embedded in a rare gas matrix. We describe the active electrons of the embedded cluster using time dependent density functional theory, while the surrounding matrix is described in terms of classical molecular dynamics of polarizable atoms. The coupling between the cluster and the rare gas atoms is deduced from the work of Gross and Spiegelmann [J. Chem. Phys. 108, 4148 (1998)] and reformulated explicitly in a simple and efficient density functional form. The electron rare gas interaction takes the form of an averaged dipole fluctuation term, which retains the van der Waals long range interaction, and a short range repulsive pseudopotential, which accounts for the Pauli repulsion of the electron by the rare gas atom. We applied our model to Na clusters embedded in Ar matrix. For the latter we developed an efficient local pseudopotential, which allows studying systems containing more than 10(3) Ar atoms. We show that large systems are indeed necessary to account properly for long range polarization of the matrix, that competes with the matrix confinement effect. We focus our study on Na(2), Na(4), and Na(8). For each system, we have determined the geometry of the most favorable trapping site by means of damped molecular dynamics. We present the effect of matrix embedding on the optical absorption spectrum. For Na(2), the trapping site can be unambiguously identified by comparison of the absorption spectrum with experiment. For Na(4) the spectrum of the embedded cluster is significantly different from the free cluster spectrum, while for Na(8) differences are less pronounced.
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Affiliation(s)
- B Gervais
- CIRIL, unité mixte CEA-CNRS-ENSICAEN et Université de Caen Basse-Normandie BP 5133, F-14070 Caen Cedex 05, France
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D'Alagni M, Delfini M, Galantini L, Giglio E. A study of the interaction of bilirubin with sodium deoxycholate in aqueous solutions. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100204a073] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Esposito G, Zanobi A, Giglio E, Pavel NV, Campbell ID. Intermolecular interactions in sodium deoxycholate micelles: an NMR study involving a spin-labeled cholestane. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100285a021] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Conte G, Di Blasi R, Giglio E, Parretta A, Pavel NV. Nuclear magnetic resonance and x-ray studies on micellar aggregates of sodium deoxycholate. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j150667a052] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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D'Alagni M, D'Archivio AA, Giglio E, Scaramuzza L. Structure of sodium and rubidium taurodeoxycholate micellar aggregates and their interaction complexes with bilirubin-IX.alpha. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100052a056] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Campanelli AR, Candeloro de Sanctis S, Chiessi E, D'Alagni M, Giglio E, Scaramuzza L. Sodium glyco- and taurodeoxycholate: possible helical models for conjugated bile salt micelles. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100341a069] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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