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Di Matteo A, Smerilli G, Di Donato S, Liu AR, Becciolini A, Camarda F, Cazenave T, Cipolletta E, Corradini D, de Agustín JJ, Destro Castaniti GM, Di Donato E, Di Geso L, Duran E, Farisogullari B, Fornaro M, Francioso F, Giorgis P, Granel A, Hernández-Díaz C, Horvath R, Hurnakova J, Jesus D, Karadag O, Li L, Marin J, Martire MV, Michelena X, Moscioni E, Muntean L, Piga M, Rosemffet M, Rovisco J, Sahin D, Salaffi F, Saraiva L, Scioscia C, Tamas MM, Tanimura S, Venetsanopoulou A, Ventura-Rios L, Villota O, Villota-Eraso C, Voulgari PV, Vukatana G, Zacariaz Hereter J, Marzo-Ortega H, Grassi W, Filippucci E. Power Doppler signal at the enthesis and bone erosions are the most discriminative OMERACT ultrasound lesions for SpA: results from the DEUS (Defining Enthesitis on Ultrasound in Spondyloarthritis) multicentre study. Ann Rheum Dis 2024:ard-2023-225443. [PMID: 38443140 DOI: 10.1136/ard-2023-225443] [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: 03/07/2024]
Abstract
OBJECTIVES To assess, in spondyloarthritis (SpA), the discriminative value of the Outcome Measures in Rheumatology (OMERACT) ultrasound lesions of enthesitis and their associations with clinical features in this population. METHODS In this multicentre study involving 20 rheumatology centres, clinical and ultrasound examinations of the lower limb large entheses were performed in 413 patients with SpA (axial SpA and psoriatic arthritis) and 282 disease controls (osteoarthritis and fibromyalgia). 'Active enthesitis' was defined as (1) power Doppler (PD) at the enthesis grade ≥1 plus entheseal thickening and/or hypoechoic areas, or (2) PD grade >1 (independent of the presence of entheseal thickening and/or hypoechoic areas). RESULTS In the univariate analysis, all OMERACT lesions except enthesophytes/calcifications showed a significant association with SpA. PD (OR=8.77, 95% CI 4.40 to 19.20, p<0.001) and bone erosions (OR=4.75, 95% CI 2.43 to 10.10, p<0.001) retained this association in the multivariate analysis. Among the lower limb entheses, only the Achilles tendon was significantly associated with SpA (OR=1.93, 95% CI 1.30 to 2.88, p<0.001) in the multivariate analyses. Active enthesitis showed a significant association with SpA (OR=9.20, 95% CI 4.21 to 23.20, p<0.001), and unlike the individual OMERACT ultrasound lesions it was consistently associated with most clinical measures of SpA disease activity and severity in the regression analyses. CONCLUSIONS This large multicentre study assessed the value of different ultrasound findings of enthesitis in SpA, identifying the most discriminative ultrasound lesions and entheseal sites for SpA. Ultrasound could differentiate between SpA-related enthesitis and other forms of entheseal pathology (ie, mechanical enthesitis), thus improving the assessment of entheseal involvement in SpA.
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Affiliation(s)
- Andrea Di Matteo
- Rheumatology Unit, Department of Clinical and Molecular Sciences, 'Carlo Urbani' Hospital, Polytechnic University of Marche, Ancona, Italy
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | - Gianluca Smerilli
- Rheumatology Unit, Department of Clinical and Molecular Sciences, 'Carlo Urbani' Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Stefano Di Donato
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | - An Ran Liu
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Andrea Becciolini
- Department of Medicine, Internal Medicine and Rheumatology Unit, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy
| | - Federica Camarda
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Palermo, Italy
| | - Tomas Cazenave
- Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina
| | - Edoardo Cipolletta
- Rheumatology Unit, Department of Clinical and Molecular Sciences, 'Carlo Urbani' Hospital, Polytechnic University of Marche, Ancona, Italy
| | | | | | - Giulia Maria Destro Castaniti
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Palermo, Italy
| | - Eleonora Di Donato
- Department of Medicine, Internal Medicine and Rheumatology Unit, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy
| | - Luca Di Geso
- Department of Internal Medicine, Provincial Hospital Madonna del Soccorso, San Benedetto del Tronto, Italy
| | - Emine Duran
- Division of Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Bayram Farisogullari
- Division of Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Marco Fornaro
- Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J) Rheumatology Unit, University of Bari, Bari, Italy
| | - Francesca Francioso
- Rheumatology Unit, Department of Clinical and Molecular Sciences, 'Carlo Urbani' Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Pamela Giorgis
- Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina
| | - Amelia Granel
- Rheumatology, Hospital San Roque de Gonnet, La Plata, Buenos Aires, Argentina
| | | | - Rudolf Horvath
- Department of Paediatric and Adult Rheumatology, Motol University Hospital, Praha, Czech Republic
| | - Jana Hurnakova
- Department of Paediatric and Adult Rheumatology, Motol University Hospital, Praha, Czech Republic
| | - Diogo Jesus
- Rheumatology Department, Leiria Hospital Centre, Pousos, Portugal
- Faculty of Health Sciences, University of Beira Interior, Covilha, Portugal
| | - Omer Karadag
- Division of Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Ling Li
- Department of Rheumatology and Immunology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong, China
| | - Josefina Marin
- Rheumatology Unit, Department of Internal Medicine, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | - Xabier Michelena
- Rheumatology Unit, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Erica Moscioni
- Rheumatology Unit, Department of Clinical and Molecular Sciences, 'Carlo Urbani' Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Laura Muntean
- Department of Rheumatology, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Matteo Piga
- Rheumatology Unit, University of Cagliari, Cagliari, Italy
| | - Marcos Rosemffet
- Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina
| | - João Rovisco
- Rheumatology Department, Centro Hospitalar e Universitário de Coimbra EPE, Coimbra, Portugal
| | - Didem Sahin
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | - Fausto Salaffi
- Rheumatology Unit, Department of Clinical and Molecular Sciences, 'Carlo Urbani' Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Liliana Saraiva
- Rheumatology Department, Centro Hospitalar e Universitário de Coimbra EPE, Coimbra, Portugal
| | - Crescenzio Scioscia
- Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J) Rheumatology Unit, University of Bari, Bari, Italy
| | - Maria-Magdalena Tamas
- Department of Rheumatology, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Shun Tanimura
- Department of Rheumatology, The Hokkaido Medical Center, Sapporo, Japan
| | - Aliki Venetsanopoulou
- Department of Rheumatology, School of Health Sciences, University of Ioannina Faculty of Medicine, Ioannina, Greece
| | - Lucio Ventura-Rios
- Division of Rheumatology, National Institute of Rehabilitation Luis Guillermo Ibarra, Ciudad de Mexico, Mexico
| | - Orlando Villota
- Division of Rheumatology, Fundación Hospital San Pedro, San Juan de Pasto, Colombia
- Department of Rheumatology, Servicio Integral de Reumatología e Inmunología Doctor Orlando Villota, Pasto, Colombia
| | - Catalina Villota-Eraso
- Department of Rheumatology, Servicio Integral de Reumatología e Inmunología Doctor Orlando Villota, Pasto, Colombia
| | - Paraskevi V Voulgari
- Department of Rheumatology, School of Health Sciences, University of Ioannina Faculty of Medicine, Ioannina, Greece
| | - Gentiana Vukatana
- Rheumatology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna Policlinico di Sant'Orsola, Bologna, Italy
| | - Johana Zacariaz Hereter
- Rheumatology Unit, Department of Internal Medicine, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Helena Marzo-Ortega
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | - Walter Grassi
- Rheumatology Unit, Department of Clinical and Molecular Sciences, 'Carlo Urbani' Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Emilio Filippucci
- Rheumatology Unit, Department of Clinical and Molecular Sciences, 'Carlo Urbani' Hospital, Polytechnic University of Marche, Ancona, Italy
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Di Matteo A, Moscioni E, Lommano MG, Cipolletta E, Smerilli G, Farah S, Airoldi C, Aydin SZ, Becciolini A, Bonfiglioli K, Carotti M, Carrara G, Cazenave T, Corradini D, Cosatti MA, de Agustin JJ, Destro Castaniti GM, Di Carlo M, Di Donato E, Di Geso L, Elliott A, Fodor D, Francioso F, Gabba A, Hernández-Díaz C, Horvath R, Hurnakova J, Jesus D, Marin J, Martire MV, Mashadi Mirza R, Massarotti M, Musca AA, Nair J, Okano T, Papalopoulos I, Rosa J, Rosemffet M, Rovisco J, Rozza D, Salaffi F, Scioscia C, Scirè CA, Tamas MM, Tanimura S, Ventura-Rios L, Villota-Eraso C, Villota O, Voulgari PV, Vreju FA, Vukatana G, Hereter JZ, Zanetti A, Grassi W, Filippucci E. Reliability assessment of ultrasound muscle echogenicity in patients with rheumatic diseases: Results of a multicenter international web-based study. Front Med (Lausanne) 2023; 9:1090468. [PMID: 36733934 PMCID: PMC9886677 DOI: 10.3389/fmed.2022.1090468] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 12/29/2022] [Indexed: 01/18/2023] Open
Abstract
Objectives To investigate the inter/intra-reliability of ultrasound (US) muscle echogenicity in patients with rheumatic diseases. Methods Forty-two rheumatologists and 2 radiologists from 13 countries were asked to assess US muscle echogenicity of quadriceps muscle in 80 static images and 20 clips from 64 patients with different rheumatic diseases and 8 healthy subjects. Two visual scales were evaluated, a visual semi-quantitative scale (0-3) and a continuous quantitative measurement ("VAS echogenicity," 0-100). The same assessment was repeated to calculate intra-observer reliability. US muscle echogenicity was also calculated by an independent research assistant using a software for the analysis of scientific images (ImageJ). Inter and intra reliabilities were assessed by means of prevalence-adjusted bias-adjusted Kappa (PABAK), intraclass correlation coefficient (ICC) and correlations through Kendall's Tau and Pearson's Rho coefficients. Results The semi-quantitative scale showed a moderate inter-reliability [PABAK = 0.58 (0.57-0.59)] and a substantial intra-reliability [PABAK = 0.71 (0.68-0.73)]. The lowest inter and intra-reliability results were obtained for the intermediate grades (i.e., grade 1 and 2) of the semi-quantitative scale. "VAS echogenicity" showed a high reliability both in the inter-observer [ICC = 0.80 (0.75-0.85)] and intra-observer [ICC = 0.88 (0.88-0.89)] evaluations. A substantial association was found between the participants assessment of the semi-quantitative scale and "VAS echogenicity" [ICC = 0.52 (0.50-0.54)]. The correlation between these two visual scales and ImageJ analysis was high (tau = 0.76 and rho = 0.89, respectively). Conclusion The results of this large, multicenter study highlighted the overall good inter and intra-reliability of the US assessment of muscle echogenicity in patients with different rheumatic diseases.
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Affiliation(s)
- Andrea Di Matteo
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy,Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom,*Correspondence: Andrea Di Matteo,
| | - Erica Moscioni
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Maria Giovanna Lommano
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Edoardo Cipolletta
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Gianluca Smerilli
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Sonia Farah
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Carla Airoldi
- Hospital Provincial, Rheumatology, Rosario, Argentina
| | - Sibel Zehra Aydin
- Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Andrea Becciolini
- Internal Medicine and Rheumatology Unit, Department of Medicine, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy
| | - Karina Bonfiglioli
- Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Marina Carotti
- Department of Radiology, Ospedali Riuniti, Università Politecnica delle Marche, Ancona, Italy
| | - Greta Carrara
- Epidemiology Unit, Italian Society of Rheumatology, Milan, Italy
| | - Tomas Cazenave
- Rheumatology Unit, Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina
| | - Davide Corradini
- Rheumatology Unit, University Clinic AOU Cagliari, Monserrato, CA, Italy
| | - Micaela Ana Cosatti
- CEMIC, Centro de Educación Médica e Investigaciones Médicas “Norberto Quirno”, Buenos Aires, Argentina
| | - Juan Josè de Agustin
- Rheumatology Unit, Vall d’Hebron Hospital Universitari, Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Giulia Maria Destro Castaniti
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Palermo, Italy
| | - Marco Di Carlo
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Eleonora Di Donato
- Internal Medicine and Rheumatology Unit, Department of Medicine, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy
| | - Luca Di Geso
- Department of Internal Medicine, Ospedale Madonna del Soccorso, San Benedetto del Tronto, Marche, Italy
| | - Ashley Elliott
- Centre for Experimental Medicine, Queen’s University Belfast, Belfast, United Kingdom
| | - Daniela Fodor
- 2nd Department of Internal Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Francesca Francioso
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Alessandra Gabba
- Local Health Unit (ASL), Samugheo, OR, Italy,Local Health Unit (ASL), Orosei, NU, Italy
| | - Cristina Hernández-Díaz
- División de Reumatología, Instituto Nacional de Rehabilitación “Luis Guillermo Ibarra Ibarra”, Mexico City, Mexico
| | - Rudolf Horvath
- Department of Paediatric and Adult Rheumatology, University Hospital Motol, Prague, Czechia
| | - Jana Hurnakova
- Department of Paediatric and Adult Rheumatology, University Hospital Motol, Prague, Czechia
| | - Diogo Jesus
- Department of Rheumatology, Centro Hospitalar de Leiria, Leiria, Portugal
| | - Josefina Marin
- Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | | | - Marco Massarotti
- Department of Rheumatology, University Hospitals Dorset NHS Foundation Trust, Christchurch Hospital, Christchurch, United Kingdom
| | | | - Jagdish Nair
- Department of Rheumatology, Liverpool University Hospitals Foundation Trust, Liverpool, United Kingdom
| | - Tadashi Okano
- Department of Orthopedic Surgery, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Ioannis Papalopoulos
- Department of Rheumatology, Clinical Immunology and Allergy, University Hospital of Heraklion, Heraklion, Greece
| | - Javier Rosa
- Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Marcos Rosemffet
- Rheumatology Unit, Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina
| | - João Rovisco
- Department of Rheumatology, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Davide Rozza
- Epidemiology Unit, Italian Society of Rheumatology, Milan, Italy
| | - Fausto Salaffi
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Crescenzio Scioscia
- Rheumatology Unit, Department of Emergency and Organ Transplants (DETO), University of Bari, Bari, Italy
| | | | - Maria-Magdalena Tamas
- Department of Rheumatology, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Shun Tanimura
- Department of Rheumatology, Hokkaido Medical Center for Rheumatic Diseases, Sapporo, Japan
| | - Lucio Ventura-Rios
- División de Reumatología, Instituto Nacional de Rehabilitación “Luis Guillermo Ibarra Ibarra”, Mexico City, Mexico
| | - Catalina Villota-Eraso
- IPS Servicio Integral de Reumatología e Inmunología Doctor Orlando Villota, Pasto, Colombia
| | - Orlando Villota
- Division of Rheumatology, Fundación Hospital San Pedro, Pasto, Colombia
| | - Paraskevi V. Voulgari
- Department of Rheumatology, School of Health Science, Faculty of Medicine, University of Ioannina, Ioannina, Greece
| | - Florentin Ananu Vreju
- Department of Rheumatology, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Gentiana Vukatana
- Rheumatology Unit, IRCCS Policlinico S. Orsola-Malpighi, Bologna, Italy
| | | | - Anna Zanetti
- Epidemiology Unit, Italian Society of Rheumatology, Milan, Italy
| | - Walter Grassi
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
| | - Emilio Filippucci
- Rheumatology Unit, Department of Clinical and Molecular Sciences, “Carlo Urbani” Hospital, Polytechnic University of Marche, Ancona, Italy
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Di Geso L, Rasetti C, Pellegrini D, Collina G, D'Angelo A, Corradini D, De Benedictis MG, Gismondi M, Lattanzi E, Scarpellini E, Santori P. A Histologically Positive Giant Cell Arteritis After a 6-Week Glucocorticoid Treatment: A Case Report. J Clin Rheumatol 2021; 27:S773-S774. [PMID: 32701536 DOI: 10.1097/rhu.0000000000001491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
| | | | - Davide Pellegrini
- Surgical Department, "Madonna del Soccorso" Hospital, San Benedetto del Tronto
| | - Guido Collina
- Department of Pathological Anatomy, "Mazzoni" Hospital, Ascoli Piceno, Marche, Italy
| | - Antonella D'Angelo
- Department of Pathological Anatomy, "Mazzoni" Hospital, Ascoli Piceno, Marche, Italy
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Corradini D, Di Matteo A, Emery P, Mankia K. How should we treat palindromic rheumatism? A systematic literature review. Semin Arthritis Rheum 2020; 51:266-277. [PMID: 33401055 DOI: 10.1016/j.semarthrit.2020.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/31/2020] [Accepted: 11/12/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVES To perform a systematic literature review (SLR) analysing all studies that reported on the efficacy and safety of pharmacological treatments for palindromic rheumatism (PR). METHODS We performed a SLR using PubMed, Embase and Cochrane databases. Three main aspects of PR were considered: treating flares, preventing recurrence of flares (i.e. achieving remission), and preventing progression to RA or to other persistent arthritis. Quality assessment of the studies was performed using the Newcastle-Ottawa Scale (NOS). RESULTS Twenty-seven articles met the inclusion criteria: 6 (22.2%) retrospective studies, 8 (29.6%) longitudinal studies, and 13 (48.1%) case series/case reports. No randomized controlled trials (RCTs) were found. Most of the studies (21/27, 77.7%) had a high risk of bias according to NOS. Non-steroidal anti-inflammatory drugs were the most commonly reported treatments for flares of PR, with variable results. Anti-malarials, such as hydroxychloroquine and chloroquine phosphate, showed efficacy in reducing the frequency of the flares and, to a lesser extent, in preventing progression to RA. There was minimal evidence in support of other conventional/biological disease modifying anti-rheumatic treatments, or corticosteroids. CONCLUSION Although a frequent clinical dilemma for rheumatologists, the pharmacological management of PR has not been thoroughly evaluated, with no RCTs reported. Of all therapies, antimalarials have been the best studied and may be capable of reducing the recurrence of flares. The optimum treatment strategy for PR remains largely undefined and should be evaluated by robust RCTs in well-defined PR cohorts.
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Affiliation(s)
- Davide Corradini
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds LS7 4SA, United Kingdom; National Institute for Health Research Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom; Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, "Carlo Urbani" Hospital, Jesi, Ancona, Italy
| | - Andrea Di Matteo
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds LS7 4SA, United Kingdom; National Institute for Health Research Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom; Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, "Carlo Urbani" Hospital, Jesi, Ancona, Italy
| | - Paul Emery
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds LS7 4SA, United Kingdom; National Institute for Health Research Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom
| | - Kulveer Mankia
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds LS7 4SA, United Kingdom; National Institute for Health Research Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom.
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Di Matteo A, Filippucci E, Cipolletta E, Martire V, Jesus D, Musca A, Corradini D, Isidori M, Salaffi F, Grassi W. How normal is the enthesis by ultrasound in healthy subjects? Clin Exp Rheumatol 2020; 38:472-478. [PMID: 31573476] [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: 12/10/2018] [Accepted: 07/09/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVES To explore the prevalence of the ultrasound (US) findings of enthesitis in a group of healthy subjects. METHODS US assessments of quadriceps, patellar and Achilles tendons, and plantar fascia entheses were performed by a rheumatologist on 82 healthy volunteers focusing on the US findings indicative of "active" inflammation according to the Outcome Measures in Rheumatology (OMERACT) definitions. RESULTS Eight hundred and twenty entheses were evaluated in 82 healthy subjects. One or more US findings of "active" inflammation were found in at least one enthesis in 30 out of 82 subjects (34.1%), in 69 out of 820 entheses (8.4%). Entheseal thickening, hypoechogenicity and PD signal were respectively found in at least one enthesis in 23 (28.0%), 11 (13.4%) and 8 (9.8%) out of 82 subjects. Among the 69 entheses showing US features of "active" inflammation, entheseal thickening, hypoechogenicity and PD signal were found as isolated in 61 entheses and in combination in the remaining 8 (entheseal thickening and hypoechogenicity). CONCLUSIONS Our results show a relatively high prevalence of US findings of "active" inflammation at the lower limb entheses in a group of healthy subjects, thus questioning the discriminant power of the OMERACT definitions for the diagnosis of "active" enthesitis. A combination of grey-scale and PD findings at a specific threshold to be defined could improve both the reliability and clinical usefulness of US.
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Affiliation(s)
- Andrea Di Matteo
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Carlo Urbani Hospital, Jesi, Ancona, Italy.
| | - Emilio Filippucci
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Carlo Urbani Hospital, Jesi, Ancona, Italy
| | - Edoardo Cipolletta
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Carlo Urbani Hospital, Jesi, Ancona, Italy
| | | | - Diogo Jesus
- Rheumatology Department, Centro Hospitalar e Universitario de Coimbra, Portugal
| | - Alice Musca
- Internal Medicine and Rheumatology Department, Dr. I. Cantacuzino Clinical Hospital, Bucharest, Romania
| | - Davide Corradini
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Carlo Urbani Hospital, Jesi, Ancona, Italy
| | - Martina Isidori
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Carlo Urbani Hospital, Jesi, Ancona, Italy
| | - Fausto Salaffi
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Carlo Urbani Hospital, Jesi, Ancona, Italy
| | - Walter Grassi
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Carlo Urbani Hospital, Jesi, Ancona, Italy
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Parato VM, Corradini D, Di Matteo A, Scarano M. An unusual interventricular septal bounce in a patient with dermatomyositis: a case report. Eur Heart J Case Rep 2019; 3:5481899. [PMID: 31449613 PMCID: PMC6601201 DOI: 10.1093/ehjcr/ytz034] [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] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 04/23/2019] [Indexed: 11/24/2022]
Abstract
Background In literature it has been reported in 1998, for the first time, a case of a 54-year-old man who developed constrictive pericarditis (CP) 12 years after diagnosis of dermatomyositis (DM). To our knowledge, this may be the only case reported. Case summary A 16-year-old man presented to our institution because of symptoms posing a suspicion for an inflammatory disease; after physical examination, lab tests, and other investigations (electromyography, magnetic resonance, and muscular biopsy) was diagnosed as having DM. Patient also showed hepatomegaly and congested jugular veins: after clinical and imaging investigations (transthoracic echocardiography and transoesophageal echocardiography) he was diagnosed as having a CP. Patient underwent pericardial resection and the final outcome consisted of a completely regression of the symptoms. Discussion Cardiac involvement in patients with DM ranges between 6% and 75%, and it can be clinically manifest or, far more frequently, sub-clinic. Pericardial involvement as a complication of DM is widely reported in the literature, but in almost all cases as acute pericarditis, effusive pericarditis or cardiac tamponade and almost never as a CP.
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Affiliation(s)
- Vito Maurizio Parato
- Cardiology Unit and EchoLab of Emergency Department, 'Madonna del Soccorso' Hospital, 3-7, Via Manara, San Benedetto del Tronto, Italy
| | - Davide Corradini
- School of Medicine, 'Politecnica delle Marche' University, Ancona, Italy
| | - Andrea Di Matteo
- Clinica Reumatologica, "C. Urbani" Hospital, Università Politecnica delle Marche, Jesi, Ancona, Italy
| | - Michele Scarano
- Cardiology Unit and EchoLab of Emergency Department, 'Madonna del Soccorso' Hospital, 3-7, Via Manara, San Benedetto del Tronto, Italy
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Di Matteo A, Isidori M, Corradini D, Cipolletta E, McShane A, De Angelis R, Filippucci E, Grassi W. Ultrasound in the assessment of musculoskeletal involvement in systemic lupus erythematosus: state of the art and perspectives. Lupus 2019; 28:583-590. [PMID: 30841789 DOI: 10.1177/0961203319834671] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 01/06/2023]
Abstract
Musculoskeletal manifestations are extremely common in patients with systemic lupus erythematosus. Transient and migratory arthralgia is frequently reported even without clinical signs of joint or tendon inflammation. In less than 15% of patients, joints may be more severely affected by deforming (Jaccoud's arthropathy) and/or erosive arthropathy (Rhupus syndrome). In recent years, ultrasound has emerged as a promising imaging technique for the assessment of musculoskeletal involvement in systemic lupus erythematosus, having demonstrated the ability to detect inflammation and structural damage both at articular and periarticular level. Recent ultrasound studies have also revealed new insights into musculoskeletal involvement in patients with systemic lupus erythematosus, some of them questioning the traditional concepts of systemic lupus erythematosus arthropathy, with potential clinical, prognostic and therapeutic implications. In daily clinical practice, the use of ultrasound in the assessment of joint and tendon involvement in patients with systemic lupus erythematosus is still limited. Several methodological issues encountered in ultrasound studies evaluating musculoskeletal involvement in systemic lupus erythematosus patients need to be addressed in order to improve both the reliability and clinical usefulness of ultrasound findings. This paper reviews ultrasound studies assessing musculoskeletal involvement in patients with systemic lupus erythematosus, highlighting certainty, limits, potential applications and future perspectives of ultrasound use in systemic lupus erythematosus patients.
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Affiliation(s)
- A Di Matteo
- 1 Department of Clinical and Molecular Sciences, Rheumatology Unit, Polytechnic University of Marche, Ancona, Italy
| | - M Isidori
- 1 Department of Clinical and Molecular Sciences, Rheumatology Unit, Polytechnic University of Marche, Ancona, Italy
| | - D Corradini
- 1 Department of Clinical and Molecular Sciences, Rheumatology Unit, Polytechnic University of Marche, Ancona, Italy
| | - E Cipolletta
- 1 Department of Clinical and Molecular Sciences, Rheumatology Unit, Polytechnic University of Marche, Ancona, Italy
| | - A McShane
- 2 Rheumatology Department, Musgrave Park Hospital, Belfast, UK
| | - R De Angelis
- 1 Department of Clinical and Molecular Sciences, Rheumatology Unit, Polytechnic University of Marche, Ancona, Italy
| | - E Filippucci
- 1 Department of Clinical and Molecular Sciences, Rheumatology Unit, Polytechnic University of Marche, Ancona, Italy
| | - W Grassi
- 1 Department of Clinical and Molecular Sciences, Rheumatology Unit, Polytechnic University of Marche, Ancona, Italy
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Greco C, Di Gennaro F, D'Amato C, Morganti R, Corradini D, Sun A, Longo S, Lauro D, Pierangeli G, Cortelli P, Spallone V. Validation of the Composite Autonomic Symptom Score 31 (COMPASS 31) for the assessment of symptoms of autonomic neuropathy in people with diabetes. Diabet Med 2017; 34:834-838. [PMID: 27990686 DOI: 10.1111/dme.13310] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/13/2016] [Indexed: 12/11/2022]
Abstract
AIM To validate the Composite Autonomic Symptom Score (COMPASS) 31, in its Italian version, for the diagnosis of diabetic cardiovascular autonomic neuropathy in a clinic-based, single-centre study. METHODS A total of 73 participants with diabetes (age 55 ± 14 years) completed the COMPASS 31 questionnaire before undergoing cardiovascular autonomic neuropathy and diabetic polyneuropathy assessment according to cardiovascular reflex tests, neuropathic symptoms and signs, and vibration and thermal thresholds. RESULTS The COMPASS 31 total weighted score differed between participants with and without cardiovascular autonomic neuropathy (29.9 ± 19.5 vs 16.1 ± 14.7; P = 0.003) and with and without diabetic polyneuropathy (28.9 ± 19.1 vs 12.7 ± 11.3; P < 0.0001). It was related to cardiovascular reflex tests score (rho = 0.38, P = 0.0013) as well as diabetic polyneuropathy symptoms (rho=0.61, P < 0.0001) and signs scores (rho = 0.49, P < 0.0001). Receiver-operating curve analysis showed a fair diagnostic accuracy of total score for cardiovascular autonomic neuropathy (area under the curve 0.748 ± 0.068, 95% CI 0.599-0.861) and diabetic polyneuropathy (area under the curve 0.742 ± 0.061, 95% CI 0.611-0.845). The best score thresholds were 16 for early cardiovascular autonomic neuropathy (sensitivity 75.0%, specificity 64.9%, positive predictive value 37.5% and negative predictive value 90.2%), and 17 for both confirmed cardiovascular autonomic neuropathy and diabetic polyneuropathy (sensitivity 70.0% and 65.5%, respectively; specificity 66.7% and 79.5%, respectively; positive predictive value 25.0% and 67.9%, respectively; and negative predictive value 93.0% and 77.8%, respectively). COMPASS 31 had a good internal consistency according to Cronbach's α coefficient of 0.73. CONCLUSIONS COMPASS 31 can represent a valid, easy-to-use, quantitative assessment tool for autonomic symptoms in diabetic neuropathy, with a fair diagnostic accuracy for both cardiovascular autonomic neuropathy and diabetic polyneuropathy.
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Affiliation(s)
- C Greco
- Endocrinology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - F Di Gennaro
- Endocrinology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - C D'Amato
- Endocrinology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - R Morganti
- Endocrinology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - D Corradini
- Endocrinology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - A Sun
- Endocrinology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - S Longo
- Endocrinology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - D Lauro
- Endocrinology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - G Pierangeli
- IRCCS Institute of Neurological Sciences of Bologna, Bologna, Italy
- Neurology, DIBINEM, University of Bologna Alma Mater Studiorum, Bologna, Italy
| | - P Cortelli
- IRCCS Institute of Neurological Sciences of Bologna, Bologna, Italy
- Neurology, DIBINEM, University of Bologna Alma Mater Studiorum, Bologna, Italy
| | - V Spallone
- Endocrinology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
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Ludl AA, Bove LE, Corradini D, Saitta AM, Salanne M, Bull CL, Klotz S. Probing ice VII crystallization from amorphous NaCl–D2O solutions at gigapascal pressures. Phys Chem Chem Phys 2017; 19:1875-1883. [DOI: 10.1039/c6cp07340a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The high density amorphous solution NaCl·10.2D2O crystallises at 260 K as almost pure ice VII during annealing at gigapascal pressures.
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Affiliation(s)
- A.-A. Ludl
- Sorbonne Universités, UPMC Univ. Paris 06
- Paris
- France
- Departament d'FMC
- Universitat de Barcelona
| | - L. E. Bove
- Sorbonne Universités, UPMC Univ. Paris 06
- Paris
- France
- EPSL
- Institute of Condensed Matter Physics
| | - D. Corradini
- Sorbonne Universités
- UPMC Univ. Paris 06
- CNRS UMR 8234
- Paris
- France
| | - A. M. Saitta
- Sorbonne Universités, UPMC Univ. Paris 06
- Paris
- France
| | - M. Salanne
- Sorbonne Universités
- UPMC Univ. Paris 06
- CNRS UMR 8234
- Paris
- France
| | - C. L. Bull
- ISIS Facility
- STFC Rutherford Appleton Laboratory
- Harwell Science & Innovation Campus, Harwell Oxford
- Oxon, OX11 0QX
- UK
| | - S. Klotz
- Sorbonne Universités, UPMC Univ. Paris 06
- Paris
- France
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Camisasca G, De Marzio M, Corradini D, Gallo P. Two structural relaxations in protein hydration water and their dynamic crossovers. J Chem Phys 2016; 145:044503. [DOI: 10.1063/1.4959286] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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11
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Corradini D, Rovere M, Gallo P. The Widom line and dynamical crossover in supercritical water: Popular water models versus experiments. J Chem Phys 2015; 143:114502. [DOI: 10.1063/1.4930542] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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12
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Bruscino N, Corradini D, Francalanci S, Palleschi GM. A case of allergic contact dermatitis due to tetracaine with unusual presentation. GIORN ITAL DERMAT V 2015; 150:266-267. [PMID: 25876149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- N Bruscino
- Section of Oncologic Dermatology, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy -
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13
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Palleschi GM, D'Erme AM, Corradini D, Cristofaro G, Urso C. Genital melanosis in two brothers. GIORN ITAL DERMAT V 2015; 150:270-271. [PMID: 25876150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- G M Palleschi
- Division of Dermatology, Department of Critical Care Medicine and Surgery, University of Florence, Florence, Italy -
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Abstract
We report the case of a 76-year-old Caucasian woman who attended our clinic with multiple keratoacanthomas. Radiotherapy was considered a viable and effective option in such an old patient, who could not be a good surgical candidate for number and distribution of the lesions, and for the age. After a 12-month follow-up, we observed the complete and global disappearance of the lesions; the patient was therefore very satisfied especially in view of the clinical outcome. According to our point of view, radiotherapy allows the physician to obtain a good oncological radicality and excellent cosmetic results too.
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15
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Gallo P, Corradini D, Rovere M. Widom line and dynamical crossovers as routes to understand supercritical water. Nat Commun 2014; 5:5806. [DOI: 10.1038/ncomms6806] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 11/10/2014] [Indexed: 11/09/2022] Open
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16
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Corradini C, Corradini D, Huber CG, Bonn GK. High-performance anion-exchange chromatography of carbohydrates using a new resin and pulsed amperometric detection. Chromatographia 2014. [DOI: 10.1007/bf02688078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Gheribi A, Corradini D, Dewan L, Chartrand P, Simon C, Madden P, Salanne M. Prediction of the thermophysical properties of molten salt fast reactor fuel from first-principles. Mol Phys 2014. [DOI: 10.1080/00268976.2014.897396] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Bruscino N, Tripo L, Corradini D, Urso C, Palleschi GM. Pilar sheath acanthoma simulating basal cell carcinoma. GIORN ITAL DERMAT V 2014; 149:155-156. [PMID: 24566580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- N Bruscino
- Section of Oncologic Dermatology, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy -
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19
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Gallo P, Corradini D, Rovere M. Fragile to strong crossover at the Widom line in supercooled aqueous solutions of NaCl. J Chem Phys 2013; 139:204503. [DOI: 10.1063/1.4832382] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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20
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De Rossi P, Ricelli A, Reverberi M, Bello C, Fabbri A, Fanelli C, De Rossi A, Corradini D, Nicoletti I. Grape variety related trans-resveratrol induction affects Aspergillus carbonarius growth and ochratoxin A biosynthesis. Int J Food Microbiol 2012; 156:127-32. [DOI: 10.1016/j.ijfoodmicro.2012.03.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 02/09/2012] [Accepted: 03/13/2012] [Indexed: 10/28/2022]
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Corradini D, Gallo P, Buldyrev SV, Stanley HE. Fragile-to-strong crossover coupled to the liquid-liquid transition in hydrophobic solutions. Phys Rev E Stat Nonlin Soft Matter Phys 2012; 85:051503. [PMID: 23004763 DOI: 10.1103/physreve.85.051503] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Indexed: 05/15/2023]
Abstract
Using discrete molecular dynamics simulations we study the relation between the thermodynamic and diffusive behaviors of a primitive model of aqueous solutions of hydrophobic solutes consisting of hard spheres in the Jagla particles solvent, close to the liquid-liquid critical point of the solvent. We find that the fragile-to-strong dynamic transition in the diffusive behavior is always coupled to the low-density-high-density liquid transition. Above the liquid-liquid critical pressure, the diffusivity crossover occurs at the Widom line, the line along which the thermodynamic response functions show maxima. Below the liquid-liquid critical pressure, the diffusivity crossover occurs when the limit of mechanical stability lines are crossed, as indicated by the hysteresis observed when going from high to low temperature and vice versa. These findings show that the strong connection between dynamics and thermodynamics found in bulk water persists in hydrophobic solutions for concentrations from low to moderate, indicating that experiments measuring the relaxation time in aqueous solutions represent a viable route for solving the open questions in the field of supercooled water.
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Affiliation(s)
- D Corradini
- Center for Polymer Studies and Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
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Abstract
In this paper we investigate by means of molecular dynamics computer simulations how the hypothesized liquid-liquid critical point of water shifts in supercooled aqueous solutions of salt as a function of concentration. We study sodium chloride solutions in TIP4P water, NaCl(aq), for concentrations c = 1.36 mol/kg and c = 2.10 mol/kg. The liquid-liquid critical point is found up to the highest concentration investigated, and its position in the P-T plane shifts to higher temperatures and lower pressures upon increasing concentration. For c = 2.10 mol/kg it is also located very close to the temperature of maximum density line of the system. The results are discussed and compared with previous results for bulk TIP4P water and for c = 0.67 mol/kg NaCl(aq) and with experimental findings. We observe a progressive shrinkage of the low-density liquid region when the concentration of salt increases; this suggests an eventual disappearance of the liquid-liquid coexistence upon further increase of NaCl concentration.
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Affiliation(s)
- D Corradini
- Dipartimento di Fisica, Università Roma Tre , Via della Vasca Navale 84, I-00146 Roma, Italy
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Corradini D, Gallo P, Rovere M. Structure and thermodynamics of supercooled aqueous solutions: Ionic solutes compared with water in a hydrophobic environment. J Mol Liq 2011. [DOI: 10.1016/j.molliq.2010.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Corradini D, Rovere M, Gallo P. Structural Properties of High and Low Density Water in a Supercooled Aqueous Solution of Salt. J Phys Chem B 2011; 115:1461-8. [DOI: 10.1021/jp1101237] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- D. Corradini
- Dipartimento di Fisica, Università “Roma Tre”, Via della Vasca Navale 84, I-00146 Roma, Italy
| | - M. Rovere
- Dipartimento di Fisica, Università “Roma Tre”, Via della Vasca Navale 84, I-00146 Roma, Italy
| | - P. Gallo
- Dipartimento di Fisica, Università “Roma Tre”, Via della Vasca Navale 84, I-00146 Roma, Italy
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Gallo P, Corradini D, Rovere M. Ion hydration and structural properties of water in aqueous solutions at normal and supercooled conditions: a test of the structure making and breaking concept. Phys Chem Chem Phys 2011; 13:19814-22. [DOI: 10.1039/c1cp22166c] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Corradini D, Gallo P, Rovere M. Molecular dynamics studies on the thermodynamics of supercooled sodium chloride aqueous solution at different concentrations. J Phys Condens Matter 2010; 22:284104. [PMID: 21399276 DOI: 10.1088/0953-8984/22/28/284104] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this paper we compare recent results obtained by means of molecular dynamics computer simulations on the thermodynamics of TIP4P bulk water and on solutions of sodium chloride in TIP4P water. The concentrations studied are c = 0.67, 1.36 and 2.10 mol kg( - 1). The results are checked against change of water-salt potential and size effects. The systems are studied in a wide range of temperatures, going from ambient temperature to the supercooled region. Analysis of simulated state points, performed on the isochores and on the isotherm plane, allowed the determination of the limit of mechanical stability and of the temperature of maximum density lines. While the presence of ions in the system does not affect the limit of mechanical stability with respect to the bulk, it causes the temperature of the maximum density line to shift to lower pressure and temperature upon increasing concentration. The occurrence of minima in the trend of potential energy as a function of density and the inflections in the low temperature isotherms suggest the presence of liquid-liquid coexistence for bulk water and for the sodium chloride solutions at all concentrations studied.
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Affiliation(s)
- D Corradini
- Dipartimento di Fisica, Università Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy
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Corradini D, Rovere M, Gallo P. A route to explain water anomalies from results on an aqueous solution of salt. J Chem Phys 2010; 132:134508. [DOI: 10.1063/1.3376776] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [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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29
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Corradini D, Gallo P, Rovere M. Effect of concentration on the thermodynamics of sodium chloride aqueous solutions in the supercooled regime. J Chem Phys 2009; 130:154511. [DOI: 10.1063/1.3119634] [Citation(s) in RCA: 15] [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: 11/14/2022] Open
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30
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Corradini D, Gallo P, Rovere M. Thermodynamic behavior and structural properties of an aqueous sodium chloride solution upon supercooling. J Chem Phys 2008; 128:244508. [DOI: 10.1063/1.2939118] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [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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31
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Stancampiano L, Corradini D, Bulgarelli M, Micagni G, Battelli G. Parasites of the digestive tract in beef cattle imported from France to Italy. Parassitologia 2007; 49:101-106. [PMID: 18412052] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Beef cattle heads (195 heads, 6 batches) imported for fattening from France to Italy were examined. Coprological qualitative and quantitative tests were performed, and the results analysed in relation to sex, breed, age, date of arrival, geographical origin (French department in which the animal was bred), and gathering centre (French department in which the animal was grouped with the others before travelling to Italy). The following parasites were identified: Eimeriidae (overall prevalence 60.5%); Strongyles (59%); Nematodirus spp. (14.3%); Trichuris spp. (4.1%); Capillaria spp. (2.0%); Paramphistomum spp. (27.6%); Dicrocoelium spp. (3.0%); Moniezia spp. (8.7%). All the observed parasites are widely reported in beef cattle either in Italy or in France. However, the seeming absence of Fasciola hepatica was unexpected, as well as the high prevalence of Paramphistomum spp. The variables that appeared to be more linked to parasite epidemiology were sex, altitude of the geographical origin and season.
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Affiliation(s)
- L Stancampiano
- Dipartimento di Sanità Pubblica Veterinaria e Patologia Animale, Università di Bologna, Ozzano dell'Emilia, BO. Italy.
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Bartolucci C, Cellai L, Corradini C, Corradini D, Lamba D, Velona I. Isolation and Quantitation of Hyaluronan Tetra- and Hexasaccharide by Anion Exchange HPLC. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483919108049339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Nicoletti I, Cogliandro E, Corradini C, Corradini D. Analysis of ∊-N-2-Furoylmethyl-L-lysine (Furosine®) in Concentrated Milk by Reversed Phase Chromatography with A Microbore Column. J LIQ CHROMATOGR R T 2006. [DOI: 10.1080/10826079708014137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- I. Nicoletti
- a Istituto di Cromatografia del C.N.R. Area della Ricerca di Roma , P.O. Box 10 I-00016 Monterotondo Stazione, Rome, Italy
| | - E. Cogliandro
- a Istituto di Cromatografia del C.N.R. Area della Ricerca di Roma , P.O. Box 10 I-00016 Monterotondo Stazione, Rome, Italy
| | - C. Corradini
- a Istituto di Cromatografia del C.N.R. Area della Ricerca di Roma , P.O. Box 10 I-00016 Monterotondo Stazione, Rome, Italy
| | - D. Corradini
- a Istituto di Cromatografia del C.N.R. Area della Ricerca di Roma , P.O. Box 10 I-00016 Monterotondo Stazione, Rome, Italy
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Nicoletti I, Corradini C, Cogliandro E, Corradini D. Identification and Dosage of 2-Furaldehyde and 5-Hydroxymethyl-2-furaldehyde in Beverages by Reversed Phase Chromatography with a Microbore Column. J LIQ CHROMATOGR R T 2006. [DOI: 10.1080/10826079608006315] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- I. Nicoletti
- a Istituto di Cromatografia del CNR - Area della Ricerca di Roma , P.O. Box 10 I-00016 Monterotondo, Stazione, Rome, Italy
| | - C. Corradini
- a Istituto di Cromatografia del CNR - Area della Ricerca di Roma , P.O. Box 10 I-00016 Monterotondo, Stazione, Rome, Italy
| | - E. Cogliandro
- a Istituto di Cromatografia del CNR - Area della Ricerca di Roma , P.O. Box 10 I-00016 Monterotondo, Stazione, Rome, Italy
| | - D. Corradini
- a Istituto di Cromatografia del CNR - Area della Ricerca di Roma , P.O. Box 10 I-00016 Monterotondo, Stazione, Rome, Italy
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Nicoletti I, Cogliandro E, Corradini C, Corradini D, Pizzoferrato L. DETERMINATION OF FUROSINE IN HYDROLYZATE OF PROCESSED MILK BY HPLC USING A NARROW BORE COLUMN AND DIODE-ARRAY DETECTOR. J LIQ CHROMATOGR R T 2006. [DOI: 10.1081/jlc-100101484] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- I. Nicoletti
- a Istituto di Cromatografia del C.N.R. , Area della Ricerca di Roma, P.O. Box 10, I-00016, Monterotondo Stazione, Rome, Italy
| | - E. Cogliandro
- a Istituto di Cromatografia del C.N.R. , Area della Ricerca di Roma, P.O. Box 10, I-00016, Monterotondo Stazione, Rome, Italy
| | - C. Corradini
- a Istituto di Cromatografia del C.N.R. , Area della Ricerca di Roma, P.O. Box 10, I-00016, Monterotondo Stazione, Rome, Italy
| | - D. Corradini
- a Istituto di Cromatografia del C.N.R. , Area della Ricerca di Roma, P.O. Box 10, I-00016, Monterotondo Stazione, Rome, Italy
| | - L. Pizzoferrato
- b Istituto Nazionale della Nutrizione , via Ardeatina, 546, Rome, 00178, Italy
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Corradini D, Grego S, Liburdi K, Marinari S, Tonci M. A Combined Approach Employing Soxhlet Extraction and Linear Gradient Elution Reversed-Phase HPLC for the Fingerprinting of Soil Organic Matter According to Hydrophobicity. Chromatographia 2006. [DOI: 10.1365/s10337-006-0764-3] [Citation(s) in RCA: 3] [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: 11/05/2022]
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Corradini D, Bevilacqua L, Nicoletti I. Separation of Basic Proteins in Bare Fused-Silica Capillaries with Diethylentriamine Phosphate Buffer as the Background Electrolyte Solution. Chromatographia 2005. [DOI: 10.1365/s10337-005-0579-7] [Citation(s) in RCA: 15] [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: 11/05/2022]
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Corradini D, Rinalducci S, Timperio AM, Zolla L. Fingerprinting of Antenna Proteins of Photosystem I by Reversed Phase High Performance Liquid Chromatography. Chromatographia 2004. [DOI: 10.1365/s10337-004-0459-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Corradini D, Huber CG, Timperio AM, Zolla L. Resolution and identification of the protein components of the photosystem II antenna system of higher plants by reversed-phase liquid chromatography with electrospray-mass spectrometric detection. J Chromatogr A 2000; 886:111-21. [PMID: 10950281 DOI: 10.1016/s0021-9673(00)00449-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Reversed-phase liquid chromatography (RPLC) was interfaced to mass spectrometry (MS) with an electrospray ion (ESI) source for the separation and accurate molecular mass determination of the individual intrinsic membrane proteins that comprise the photosystem II (PS II) major light-harvesting complex (LHC II) and minor (CP24, CP26 and CP29) antenna system, whose molecular masses range between 22,000 and 29,000. PS II is a supramolecular complex intrinsic of the thylacoid membrane, which plays the important role in photosynthesis of capturing solar energy, and transferring it to photochemical reaction centers where energy conversion occurs. The protein components of the PS II major and minor antenna systems were extracted from spinach thylacoid membranes and separated using a butyl-silica column eluted by an acetonitrile gradient in 0.05% (v/v) aqueous trifluoroacetic acid. On-line electrospray MS allowed accurate molecular mass determination and identification of the protein components of PS II major and minor antenna system. The proposed RPLC-ESI-MS method holds several advantages over sodium dodecyl sulfate-polyacrylamide gel electrophoresis, the conventional technique for studying membrane proteins, including a better protein separation, mass accuracy, speed and efficiency.
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Affiliation(s)
- D Corradini
- Istituto di Cromatografia del CNR, Monterotondo Stazione (Rome), Italy.
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41
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Corradini D. Buffer additives other than the surfactant sodium dodecyl sulfate for protein separations by capillary electrophoresis. J Chromatogr B Biomed Sci Appl 1997; 699:221-56. [PMID: 9392377 DOI: 10.1016/s0378-4347(97)00301-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The different compounds utilized as additives to the electrolyte solutions employed in protein capillary zone electrophoresis (CZE) for minimizing protein-capillary wall interactions, for improving selectivity and resolution and for controlling the electroosmotic flow are reviewed. The dependence of the electroosmotic flow on the different variables that can be affected by the incorporation of an additive into the electrolytic solution is discussed. A list of the most effective additives employed for protein separations by CZE is reported in Appendix A.
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Affiliation(s)
- D Corradini
- Istituto di Cromatografia del CNR Area della Ricerca di Roma, Rome, Italy
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Zolla L, Bianchetti M, Timperio AM, Mugnozza GS, Corradini D. Capillary electrophoresis of closely related intrinsic thylakoid membrane proteins of the photosystem II light-harvesting complex (LHC II). Electrophoresis 1996; 17:1597-601. [PMID: 8957188 DOI: 10.1002/elps.1150171018] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The electrophoretic migration behavior of three closely related hydrophobic intrinsic membrane proteins of the photosystem II light-harvesting complex (LHC II) was investigated in free solution capillary electrophoresis at pH 8.0-10 with running electrolyte solutions containing either anionic, zwitter-ionic or nonionic detergents. The complete and repeatable separation of these proteins was accomplished with a running electrolyte solution of 25 mM Tris/192 mM glycine, pH 8.8, containing either sodium dodecyl sulfate or n-octyl beta-D-glucopyranoside at concentration up to 5.0 and 7.0 mM, respectively. Migration times and resolution of the individual LHC II intrinsic membrane proteins were sensitive to the type of detergent. The effect of detergent concentration on the electrophoretic behavior of the LHC II proteins was also investigated. Electroelution of the LHC II components separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis was used to isolate these intrinsic membrane proteins, which were then injected onto the capillary electrophoresis system for peak identification.
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Affiliation(s)
- L Zolla
- Dipartimento di Scienze Ambientali, Università della Tuscia, Viterbo, Italy.
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Basso Ricci S, Corradini D, Bartoli C, Borsa G, Basso Ricci P. Breast cancer patients: long-term relapses. Panminerva Med 1996; 38:106-10. [PMID: 8979742] [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] [Indexed: 02/03/2023]
Abstract
The authors evaluated 200 cases of long-term relapses in patients subjected to mastectomy at least 8 years before and not given any hormonal or other therapy that would have significantly affected the course of the disease. A group of 200 mastectomy patients with early relapses (within 3 years) was used as a control. The following parameters were compared: histologic type, singularity or multiplicity of the relapses at the time of the diagnosis, the patient's age at the time of the mastectomy, the presence of metastatic lymphnodes at the axilla, the clinical course of the disease after the diagnosis of relapse, and the presence of estrogen receptors in the primary tumor. There was a significant higher incidence of lobular histologic type in the group of patients with long-term relapses (p < 0.001). The cases with long-term relapses showed a relatively lower number of relapses in local-region lymphnodes (p < 0.005) a higher number of cases with metastases to the axillary lymphnodes at the time of mastectomy (p < 0.001), a better clinical course (survival) after the diagnosis (mean 3 vs 2.6 years), and more cases with estrogen receptors (p < 0.001) than controls. Premenopausal or postmenopausal status at the time of mastectomy was not significant. After a review of the literature, the authors conclude that relapses that appear after 8 years from the mastectomy occur almost exclusively in patients with a cancer for which the hormonal factor is very important. They hypothesize that even the 18 cases of the series who were without estrogen receptors in reality had receptors saturated by circulating estrogens or receptors for other hormones.
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Affiliation(s)
- S Basso Ricci
- Divisione di Radioterapia B, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy
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Corradini D, Kalghatgi K, Horváth C. Effect of mobile phase additives on peptide retention in reversed-phase chromatography with pellicular and totally porous sorbents. J Chromatogr A 1996; 728:225-33. [PMID: 8673232 DOI: 10.1016/0021-9673(95)01019-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The effect of two mobile phase additives, trifluoroacetic acid and phosphoric acid, on the energetics of peptide retention in reversed-phase chromatography was investigated using Hy-Tach C18 micropellicular and Vydac C4 and C18 totally porous stationary phases. The effect of the relatively low phase ratio of columns packed with micropellicular sorbents was also examined. The logarithmic retention factors, of two model peptides, Ac-RGGGGLGLGK-amide and Ac-RGAGGLGLGK-amide, were evaluated with different columns and additives in a practical range of eluent strength. The dependence of the logarithmic retention factor on the concentration of acetonitrile in the mobile phase was linear in all cases. The higher sensitivity of the retention to the organic modifier concentration in the case of the Hy-Tach C18 column is attributed to the relatively low phase ratio of this column. Pairwise plots of the logarithmic retention factors were linear. The plots of data obtained with the two additives has unit slopes and thus reveal homoenergetic retention behavior. On the other hand data obtained on two different columns manifest homeoenergetic retention, the slopes of plots are different from unity. The analysis has yielded consistent results and validated the assumption that the retention free energy can be divided into two components arising from mobile phase and stationary phase contributions. The approach also allowed an estimation of the relative phase ratios of the columns and the Vydac C18 column was found to have an 3 and 8 times higher phase ratio than the Vydac C4 and the Hy-Tech C18 column, respectively.
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Affiliation(s)
- D Corradini
- Department of Chemical Engineering, Yale University, New Haven, CT 06520, USA
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Corradini D, Cannarsa G, Corradini C, Nicoletti I, Pizzoferrato L, Vivanti V. Analysis of epsilon-N-2-furoylmethyl-L-lysine (furosine) in dried milk by capillary electrophoresis with controlled electroosmotic flow using N,N,N',N'-tetramethyl-1,3-butanediamine in the running electrolyte solution. Electrophoresis 1996; 17:120-4. [PMID: 8907528 DOI: 10.1002/elps.1150170120] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The electrophoresis of epsilon-N-2-furoylmethyl-L-lysine (furosine) was studied in an attempt to develop a method for the identification and quantitation of this compound in processed food. The effect of pH and composition of electrolyte solution on both the electrophoretic migration of furosine and the electroosmotic flow in a bare fused-silica capillary of 75 mu m internal diameter was investigated. We demonstrate that the addition, to the running electrolyte solution, of N,N,N',N'-tetramethyl-1,3-butanediamine (TMBD) at concentrations ranging from 20 to 80 mM improves peak efficiency and can be used to modulate the migration time of furosine by controlling the electroosmotic flow which is reversed from cathodic to anodic. In a sample of dried milk subjected to a long period of storage under controlled conditions, furosine could be efficiently and reproducibly separated and quantitated by employing as the running electrolyte 60 mM TMBD titrated to pH 2.5. Capillary electrophoresis is a promising technique for the rapid identification and quantitation of furosine in processed food.
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Affiliation(s)
- D Corradini
- Istituto de Cromatografia del CNR, Monterotondo Stazione, Rome, Italy
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Corradini D, Cannarsa G. N,N,N',N'-tetramethyl-1,3-butanediamine as effective running electrolyte additive for efficient electrophoretic separation of basic proteins in bare fused-silica capillaries. Electrophoresis 1995; 16:630-5. [PMID: 7588536 DOI: 10.1002/elps.11501601101] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The effect of N,N,N',N'-tetramethyl-1,3-butanediamine (TMBD) in the running electrolyte on the electroosmotic flow and the migration behavior of four standard basic proteins in bare fused-silica capillaries was examined at pH 4.0, 5.5, and 6.5. Depending on the electrolyte pH and additive concentration the electroosmotic flow was either cathodic or anodic. A similar Langmuirian-type dependence of the electroosmotic flow on the concentration of TMBD in the running electrolyte was found at the three experimented pH values, which may be indicative of the specific adsorption of the additive in the immobilized region of the electric double layer at the interface between the capillary wall and the electrolyte solution. Electrophoretic separations of the four standard basic proteins performed at the three above pH values, showed well-resolved, efficient and symmetric peaks, demonstrating the utility of this additive for protein electrophoresis in bare fused-silica capillaries. The variations in separation efficiency, peak capacity, resolution and reproducibility of migration times as a function of the additive concentration at pH 6.5 were also examined.
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Affiliation(s)
- D Corradini
- Istituto di Cromatografia del CNR, Area della Ricerca di Roma, Monterotondo Stazione, Italy
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Abstract
A rapid high-performance liquid chromatography method for the analysis of somatostatin in pharmaceutical preparations is described. A commercially available column packed with 2 microns spherical non-porous silica-based reversed-phase sorbent is used, along with a mobile phase consisting of acetonitrile and aqueous phosphoric acid, adjusted to pH 2.8 with sodium hydroxide. The effect of the organic modifier content and column temperature on the retention behaviour of somatostatin is reported. The method is found to be highly selective and specific, as indicated by the baseline separation of a mixture containing somatostatin and two analogue peptides, which differ from the analyte for one and two amino acids, respectively. Down to 10 ng of somatostatin can be detected and the detector response is linear over the concentration range from 4.14 to 20.75 micrograms ml-1. The application of this method to two commercial pharmaceutical formulations of somatostatin is found to give a mean percentage recovery from each of the two commercial samples, subjected to multiple injection analysis (n = 5), of 100.9% with a RSD of 0.92%, and 102.6% with a RSD of 1.56%, respectively.
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Affiliation(s)
- V Brizzi
- Dipartimento Farmaco Chimico Tecnologico, Università di Siena, Italy
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Corradini D, el Rassi Z, Horváth C, Guerra G, Horne W. Combined lectin-affinity and metal-interaction chromatography for the separation of glycophorins by high-performance liquid chromatography. J Chromatogr A 1988; 458:1-11. [PMID: 3235627 DOI: 10.1016/s0021-9673(00)90549-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Human erythrocyte sialoglycoproteins, or glycophorins, were chromatographed by lectin-affinity and metal-interaction chromatography on high-performance liquid chromatographic columns. Glycophorins A, B and C were separated from other proteins and from glycophorin E by using a column containing wheat germ agglutinin, immobilized on a microparticulate silica support. The glycophorins were adsorbed on the lectin column from a mobile phase containing 0.25 M sodium chloride and recovered by stepwise desorption with 0.2 M N-acetylglucosamine solution. Glycophorins A, B and C were separated into the individual components on a silica-bound iminodiacetic acid stationary phase in the copper(II) chelate form. The separation of the glycophorins by metal-interaction chromatography was accomplished by decreasing salt gradient elution. Retention times and resolution of the individual glycophorins were sensitive to the initial sodium chloride concentration and the pH of the eluent. Addition of methanol to the eluent increased the resolution. The effects of linear, decreasing gradients of pH and methanol in 25 mM phosphate buffer on the resolution of glycophorins were also investigated. In both types of chromatography the mobile phases contained 0.05% (w/v) sodium dodecyl sulfate. With octylglycoside or CHAPS in the eluent glycophorins A and C could not be eluted. Sodium dodecyl sulfate polyacrylamide gel electrophoresis was used to analyze all the chromatographic results.
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Affiliation(s)
- D Corradini
- Department of Chemical Engineering, Yale University, New Haven, CT 06520
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Corradini D, Horváth C. Chromatography of Astra Blue dyes with eluents containing potassium thiocyanate in organic solvents. J Chromatogr A 1985; 319:400-3. [PMID: 3997997 DOI: 10.1016/s0021-9673(01)90579-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Melander WR, Corradini D, Horváth C. Salt-mediated retention of proteins in hydrophobic-interaction chromatography. Application of solvophobic theory. J Chromatogr A 1984; 317:67-85. [PMID: 6530455 DOI: 10.1016/s0021-9673(01)91648-6] [Citation(s) in RCA: 250] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Retention behavior in hydrophobic-interaction chromatography was examined within the framework of the solvophobic theory. The principal parameters which determine the effect of salt on the retention are salt molality and the molal surface tension increment of the salt. According to the theory, in the absence of special binding effects, increase in salt molality in the mobile phase or change of salt to one of greater molal surface tension increment will result in increased retention of proteins in hydrophobic chromatography. The theory is expanded to treat retention in gradient elution with linear decrease in salt concentration that is equivalent to linear increase in eluent strength. The results of the simple model lead to an expression with two parameters: the adjusted isocratic retention volume of the eluite with the gradient former and the slope of plot of logarithmic adjusted elution volume against salt molality, lambda. The latter parameter is linearly dependent on molal surface tension increment if no specific interactions between the eluite and the stationary phase and/or salt are present. In practice, deviations are to be expected from the predicted behavior due to such effects. The results of calculations are consistent with experimental results obtained with several proteins as the eluites and various salts in the eluent. Although unique values of the critical parameter lambda could not be obtained from the data, the trends showed that lambda is strongly correlated with the value of the molal surface tension increment. The prediction that increase in salt concentration in the initial eluent leads to increase in retention volume was found to be generally true, even when the isocratic retention volumes obtained with use of eluent having low salt concentration were small. Use of NaClO4 in the starting eluent led in some cases to decrease in retention volume with increase in the salt concentration at the beginning of the gradient elution. This effect may be due to specific binding effects.
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