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Ledda RE, Schirò S, Leo L, Milanese G, Branchi C, Commisso C, Borgia E, Mura R, Zilioli C, Sverzellati N. Diagnostic performance of chest CT average intensity projection (AIP) reconstruction for the assessment of pleuro-parenchymal abnormalities. Clin Radiol 2024:S0009-9260(24)00197-1. [PMID: 38693034 DOI: 10.1016/j.crad.2024.04.006] [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] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 04/03/2024] [Accepted: 04/09/2024] [Indexed: 05/03/2024]
Abstract
AIM The comparison between chest x-ray (CXR) and computed tomography (CT) images is commonly required in clinical practice to assess the evolution of chest pathological manifestations. Intrinsic differences between the two techniques, however, limit reader confidence in such a comparison. CT average intensity projection (AIP) reconstruction allows obtaining "synthetic" CXR (s-CXR) images, which are thought to have the potential to increase the accuracy of comparison between CXR and CT imaging. We aim at assessing the diagnostic performance of s-CXR imaging in detecting common pleuro-parenchymal abnormalities. MATERIALS AND METHODS 142 patients who underwent chest CT examination and CXR within 24 hours were enrolled. CT was the standard of reference. Both conventional CXR (c-CXR) and s-CXR images were retrospectively reviewed for the presence of consolidation, nodule/mass, linear opacities, reticular opacities, and pleural effusion by 3 readers in two separate sessions. Sensitivity, specificity, accuracy and their 95% confidence interval were calculated for each reader and setting and tested by McNemar test. Inter-observer agreement was tested by Cohen's K test and its 95%CI. RESULTS Overall, s-CXR sensitivity ranged 45-67% for consolidation, 12-28% for nodule/mass, 17-33% for linear opacities, 2-61% for reticular opacities, and 33-58% for pleural effusion; specificity 65-83%, 83-94%, 94-98%, 93-100% and 79-86%; accuracy 66-68%, 74-79%, 89-91%, 61-65% and 68-72%, respectively. K values ranged 0.38-0.50, 0.05-0.25, -0.05-0.11, -0.01-0.15, and 0.40-0.66 for consolidation, nodule/mass, linear opacities, reticular opacities, and pleural effusion, respectively. CONCLUSION S-CXR images, reconstructed with AIP technique, can be compared with conventional images in clinical practice and for educational purposes.
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Affiliation(s)
- R E Ledda
- Department of Medicine and Surgery (DiMeC), University of Parma, Parma, Italy.
| | - S Schirò
- Department of Medicine and Surgery (DiMeC), University of Parma, Parma, Italy.
| | - L Leo
- Department of Medicine and Surgery (DiMeC), University of Parma, Parma, Italy.
| | - G Milanese
- Department of Medicine and Surgery (DiMeC), University of Parma, Parma, Italy.
| | - C Branchi
- Radiological Sciences Unit, Diagnostic Department, University Hospital of Parma, Parma, Italy.
| | - C Commisso
- Radiology Unit, Diagnostic Department, University Hospital of Parma, Parma, Italy.
| | - E Borgia
- Department of Medicine and Surgery (DiMeC), University of Parma, Parma, Italy.
| | - R Mura
- Department of Medicine and Surgery (DiMeC), University of Parma, Parma, Italy.
| | - C Zilioli
- Department of Medicine and Surgery (DiMeC), University of Parma, Parma, Italy.
| | - N Sverzellati
- Department of Medicine and Surgery (DiMeC), University of Parma, Parma, Italy.
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Massimi L, Cinalli G, Frassanito P, Arcangeli V, Auer C, Baro V, Bartoli A, Bianchi F, Dietvorst S, Di Rocco F, Gallo P, Giordano F, Hinojosa J, Iglesias S, Jecko V, Kahilogullari G, Knerlich-Lukoschus F, Laera R, Locatelli D, Luglietto D, Luzi M, Messing-Jünger M, Mura R, Ragazzi P, Riffaud L, Roth J, Sagarribay A, Pinheiro MS, Spazzapan P, Spennato P, Syrmos N, Talamonti G, Valentini L, Van Veelen ML, Zucchelli M, Tamburrini G. Intracranial complications of sinogenic and otogenic infections in children: an ESPN survey on their occurrence in the pre-COVID and post-COVID era. Childs Nerv Syst 2024; 40:1221-1237. [PMID: 38456922 DOI: 10.1007/s00381-024-06332-9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 02/21/2024] [Indexed: 03/09/2024]
Abstract
BACKGROUND COVID-19 pandemic is thought to have changed the epidemiology of some pediatric neurosurgical disease: among them are the intracranial complications of sinusitis and otitis (ICSO). According to some studies on a limited number of cases, both streptococci-related sinusitis and ICSO would have increased immediately after the pandemic, although the reason is not clear yet (seasonal changes versus pandemic-related effects). The goal of the present survey of the European Society for Pediatric Neurosurgery (ESPN) was to collect a large number of cases from different European countries encompassing the pre-COVID (2017-2019), COVID (2020-2021), and post-COVID period (2022-June 2023) looking for possible epidemiological and/or clinical changes. MATERIAL AND METHODS An English language questionnaire was sent to ESPN members about year of the event, patient's age and gender, presence of immune-deficit or other favoring risk factors, COVID infection, signs and symptoms at onset, site of primary infection, type of intracranial complication, identified germ, type and number of surgical operations, type and duration of medical treatment, clinical and radiological outcome, duration of the follow-up. RESULTS Two hundred fifty-four cases were collected by 30 centers coming from 14 different European countries. There was a statistically significant difference between the post-COVID period (129 children, 86 cases/year, 50.7% of the whole series) and the COVID (40 children, 20 cases/year, 15.7%) or the pre-COVID period (85 children, 28.3 cases/year, 33.5%). Other significant differences concerned the presence of predisposing factors/concurrent diseases (higher in the pre-COVID period) and previous COVID infection (higher in the post-COVID period). No relevant differences occurred as far as demographic, microbiological, clinical, radiological, outcome, morbidity, and mortality data were concerned. Paranasal sinuses and middle ear/mastoid were the most involved primary site of infection (71% and 27%, respectively), while extradural or subdural empyema and brain abscess were the most common ICSO (73% and 17%, respectively). Surgery was required in 95% of cases (neurosurgical and ENT procedure in 71% and 62% of cases, respectively) while antibiotics in 99% of cases. After a 12.4-month follow-up, a full clinical and radiological recovery was obtained in 85% and 84% of cases, respectively. The mortality rate was 2.7%. CONCLUSIONS These results suggest that the occurrence of ICSO was significantly increased after the pandemic. Such an increase seems to be related to the indirect effects of the pandemic (e.g., immunity debt) rather than to a direct effect of COVID infection or to seasonal fluctuations. ICSO remain challenging diseases but the pandemic did not affect the management strategies nor their prognosis. The epidemiological change of sinusitis/otitis and ICSO should alert about the appropriate follow-up of children with sinusitis/otitis.
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Affiliation(s)
- L Massimi
- Pediatric Neurosurgery, Neuroscience-Sense Organs-Chest Department, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Neuroscience, Catholic University Medical School, Rome, Italy
| | - G Cinalli
- Santobono-Pausilipon Children's Hospital, AORN, Naples, Italy
| | - P Frassanito
- Pediatric Neurosurgery, Neuroscience-Sense Organs-Chest Department, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
| | - V Arcangeli
- Clinical Psychology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - C Auer
- Department of Neurosurgery, Johannes Kepler University Linz, Kepler University Hospital GmbH, Linz, Austria
| | - V Baro
- Pediatric and Functional Neurosurgery, Department of Neurosciences, University of Padova, Padua, Italy
| | - A Bartoli
- Department of Neurosurgery, Geneva University Hospitals, Geneva, Switzerland
| | - F Bianchi
- Pediatric Neurosurgery, Neuroscience-Sense Organs-Chest Department, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - S Dietvorst
- University Hospitals Leuven, Leuven, Belgium
| | - F Di Rocco
- Hôpital Femme-Mère-Enfant, Université de Lyon, Lyon, France
| | - P Gallo
- Birmingham Children's Hospital, Birmingham, UK
| | - F Giordano
- University of Florence, Florence, Italy
- Meyer Children's Hospital IRCCS, Florence, Italy
| | - J Hinojosa
- Hospital Sant Joan de Déu, Barcelona, Spain
| | - S Iglesias
- Hospital Regional Universitario de Malaga, Malaga, Spain
| | - V Jecko
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - G Kahilogullari
- Department of Neurosurgery, Ankara University, Ankara, Turkey
| | - F Knerlich-Lukoschus
- Division Pediatric Neurosurgery, Department of Neurosurgery, University Medical Center Göttingen, Göttingen, Germany
| | - R Laera
- Santobono-Pausilipon Children's Hospital, AORN, Naples, Italy
| | - D Locatelli
- Neurosurgery Department, Università Dell'Insubria, Ospedale di Circolo e Macchi Foundation, Varese, Italy
| | - D Luglietto
- Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - M Luzi
- Azienda Ospedaliero Universitaria Delle Marche, Ancona, Italy
| | | | - R Mura
- Meyer Children's Hospital IRCCS, Florence, Italy
| | - P Ragazzi
- Department of Pediatric Neurosurgery, Ospedale Infantile Regina Margherita, Città della Salute e della Scienza, Turin, Italy
| | - L Riffaud
- Rennes University Hospital, Rennes, France
| | - J Roth
- Dana Children's Hospital, Tel Aviv Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - A Sagarribay
- Hospital Dona Estefânia-Centro Hospitalar Universitário, Lisboa, Portugal
- Hospital CUF Descobertas, Lisboa, Portugal
| | - M Santos Pinheiro
- Centro Hospitalar Lisboa Norte-Hospital Santa Maria, Lisboa, Portugal
| | - P Spazzapan
- University Medical Center-Ljubljana, Ljubljana, Slovenia
| | - P Spennato
- Santobono-Pausilipon Children's Hospital, AORN, Naples, Italy
| | - N Syrmos
- Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - L Valentini
- Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - M L Van Veelen
- Erasmus MC Sophia Children's Hospital, Rotterdam, Netherlands
| | - M Zucchelli
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto Scienze Neurologiche Di Bologna, Boulogne, Italy
| | - G Tamburrini
- Pediatric Neurosurgery, Neuroscience-Sense Organs-Chest Department, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Neuroscience, Catholic University Medical School, Rome, Italy
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Ghiani G, Roberto S, Mura R, Fois F, Scorcu M, Crisafulli A. Body composition changes during the lockdown-restart transition due to the SARS-CoV-2 pandemic in a group of professional football players. J Sports Med Phys Fitness 2021; 62:649-653. [PMID: 34651614 DOI: 10.23736/s0022-4707.21.12894-4] [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] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND At the beginning of March 2020, because of the ongoing pandemic, all sport events were suspended in Italy. The Italian Serie A league abruptly interrupted all competitions and teams could not train in a group anymore. These containment measures were gradually eased in May. The aim of this study was to ascertain the impact of the lockdown-restart transition on the body composition of a group of Italian footballers of a Serie A team during the pandemic. METHODS The body composition of 18 male football players (age27.6 ± 4.5 yr.) from an Italian Serie A team was studied by bioelectrical impedance (BIA). Measures were conducted after lockdown, when they restarted to train in group with the ball (T0), and after the first regular match (T1). RESULTS Results show that there were no changes in body mass, body mass index, fat mass, fat-free mass, and total body water between T0 and T1. Differently, intracellular water, extracellular water, and phase angle were changed. CONCLUSIONS We concluded that the lockdown did not have any impact in athletes' body composition as they kept training at home. Moreover, the BIA method was able to detect subtle signals of shift in body water compartments (intra cellular and extra cellular water) likely due to the different kind of training conducted during and after the lockdown.
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Affiliation(s)
- Giovanna Ghiani
- Sports Physiology Lab., Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy -
| | - Silvana Roberto
- Sports Physiology Lab., Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | | | | | | | - Antonio Crisafulli
- Sports Physiology Lab., Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
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Pillon M, Carraro E, Mussolin L, Conter V, Tondo A, Aricò M, Mura R, Sala A, Vinti L, Buffardi S, Pierani P, d'Amore ESG, Basso G. Primary mediastinal large B-cell lymphoma: Outcome of a series of pediatric patients treated with high-dose methotrexate and cytarabine plus anti-CD20. Pediatr Blood Cancer 2018; 65. [PMID: 29049862 DOI: 10.1002/pbc.26855] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 09/14/2017] [Accepted: 09/19/2017] [Indexed: 11/08/2022]
Abstract
Between 2007 and 2013, 13 children diagnosed with primary mediastinal large B-cell lymphoma (PMLBL) were treated according to a modified version of AIEOP (Associazione Italiana Ematologia Oncologia Pediatrica) LNH-97 protocol based on high-dose methotrexate, anthracyclines, and addition of anti-CD20. Ten patients achieved a continuous complete remission with front-line therapy. The overall 5-year survival was 91.7%, and event-free survival was 83.9%, with only one patient dying of progressive disease. Despite the few cases, these results demonstrate that this therapy, which includes anti-CD20, given in a multicenter setting, is feasible with acceptable toxicity in children with PMLBL.
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Affiliation(s)
- Marta Pillon
- Pediatric Hematology and Oncology Unit, Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - E Carraro
- Pediatric Hematology and Oncology Unit, Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - L Mussolin
- Pediatric Hematology and Oncology Unit, Department of Women's and Children's Health, University of Padova, Padova, Italy.,Institute of Paediatric Research-Fondazione Città della Speranza, Padova, Italy
| | - V Conter
- Department of Paediatrics, Ospedale San Gerardo, University of Milano-Bicocca, Fondazione MBBM, Monza, Italy
| | - A Tondo
- Department of Paediatric Haematology-Oncology, Azienda Ospedaliero-Universitaria Meyer Children Hospital, Firenze, Italy
| | - M Aricò
- Paediatric Unit, Medical Department, Azienda Sanitaria Provinciale Ragusa, Ragusa, Italy
| | - R Mura
- Department of Paediatric Haematology-Oncology, Ospedale Pediatrico Microcitemico, Cagliari, Italy
| | - A Sala
- Department of Paediatrics, Ospedale San Gerardo, University of Milano-Bicocca, Fondazione MBBM, Monza, Italy
| | - L Vinti
- Department of Paediatric Haemato-Oncology, IRCCS Ospedale Bambino Gesù, Roma, Italy
| | - S Buffardi
- Department of Paediatric Haemato-Oncology, Santobono-Pausilipon Children's Hospital, Napoli, Italy
| | - P Pierani
- Division of Pediatric Hematology and Oncology, Ospedale G.Salesi, Ancona, Italy
| | - E S G d'Amore
- Department of Pathology, San Bortolo Hospital, Vicenza, Italy
| | - G Basso
- Pediatric Hematology and Oncology Unit, Department of Women's and Children's Health, University of Padova, Padova, Italy
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Tocco F, Crisafulli A, Milia R, Marongiu E, Mura R, Roberto S, Todde F, Concu D, Melis S, Velluzzi F, Loviselli A, Concu A, Melis F. Nervous Facilitation in Cardiodynamic Response of Exercising Athletes to Superimposed Mental Tasks: Implications in Depressive Disorder. Clin Pract Epidemiol Ment Health 2015; 11:166-73. [PMID: 26535050 PMCID: PMC4627388 DOI: 10.2174/1745017901511010166] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 02/15/2015] [Accepted: 02/16/2015] [Indexed: 12/03/2022]
Abstract
Introduction : Motor commands to perform exercise tasks may also induce activation of cardiovascular centres to supply the energy needs of the contracting muscles. Mental stressors per se may also influence cardiovascular homeostasis. We investigated the cardiovascular response of trained runners simultaneously engaged in mental and physical tasks to establish if aerobically trained subjects could develop, differently from untrained ones, nervous facilitation in the brain cardiovascular centre. Methods : Cardiovascular responses of 8 male middle-distance runners (MDR), simultaneously engaged in mental (colour-word interference test) and physical (cycle ergometer exercise) tasks, were compared with those of 8 untrained subjects. Heart rate, cardiac (CI) and stroke indexes were assessed by impedance cardiography while arterial blood pressures were assessed with a brachial sphygmomanometer. Results : Only in MDR simultaneous engagement in mental and physical tasks induced a significant CI increase which was higher (p<0.05) than that obtained on summing CI values from each task separately performed. Conclusion : Aerobic training, when performed together with a mental effort, induced a CI oversupply which allowed a redundant oxygen delivery to satisfy a sudden fuel demand from exercising muscles by utilizing aerobic sources of ATP, thus shifting the anaerobic threshold towards a higher work load. From data of this study it may also be indirectly stated that, in patients with major depressive disorder, the promotion of regular low-intensity exercise together with mental engagement could ameliorate the perceived physical quality of life, thus reducing their heart risk associated with physical stress.
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Affiliation(s)
- Filippo Tocco
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy
| | - Antonio Crisafulli
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy
| | - Raffaele Milia
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy
| | - Elisabetta Marongiu
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy
| | - Roberto Mura
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy
| | - Silvana Roberto
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy
| | - Francesco Todde
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy
| | - Daniele Concu
- 2C Technologies Inc., Academic Spinoff, University of Cagliari, Italy
| | - Salvatore Melis
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy
| | - Fernanda Velluzzi
- Obesity Units, Department of Medical Sciences, University of Cagliari, Italy
| | - Andrea Loviselli
- Obesity Units, Department of Medical Sciences, University of Cagliari, Italy
| | - Alberto Concu
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy ; 2C Technologies Inc., Academic Spinoff, University of Cagliari, Italy
| | - Franco Melis
- Laboratory of Sports Physiology, Department of Medical Sciences, University of Cagliari, Italy
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Tocco F, Sanna I, Mulliri G, Magnani S, Todde F, Mura R, Ghiani G, Concu A, Melis F, Crisafulli A. Heart Rate Unreliability during Interval Training Recovery in Middle Distance Runners. J Sports Sci Med 2015; 14:466-472. [PMID: 25983598 PMCID: PMC4424478] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 04/08/2015] [Indexed: 06/04/2023]
Abstract
Heart rate (HR) was tested as a reliable index for recovery management during interval training (IT), considering its relationship with the several factors involved in respiratory, metabolic and cardiovascular homeostasis. Thirteen runners underwent two different IT sessions: at 80% and 120% of the second ventilatory threshold (VT2). Throughout both sessions HR, oxygen uptake (VO2), carbon dioxide production (VCO2) and pulmonary ventilation (VE), were measured by means of a portable gas analyzer. Carbon dioxide production excess (CO2excess), respiratory exchange ratio (RER), oxygen pulse (OP) and oxygen debt (O2debt) were also estimated. A significant increase in HR values (144 versus 150 beats·min(-1) between the first recovery and the last, p < 0.001) was observed at 80% of the VT2 speed. At the over-threshold intensity, HR rose from 159 to 168 beats·min(-1) from the first recovery to the last (p < 0.001). OP showed a declining trend from the first to the last recovery at 80% at the VT2 speed (18.3 versus 16.4 mL·beats(-1), p < 0.05) and between the first and the last recovery in tests performed at 120% of the VT2 speed (17.8 versus 16.3 mL·beats(-1), p < 0.05). No change occurred in CO2excess, VO2, RER, VE and O2debt. On the basis of our research, the use of fixed HR as a reliable index of the established recovery is inaccurate and unfit for training. The phenomenon of cardiac drift to set the restart timing after the repetitions, i.e. by progressively increasing HR values, should be taken into account by coaches. Key pointsDuring an IT session, if recovery time after repetitions is fixed, HR supplies a different indication compared to all the respiratory parameters: HR indicates an incomplete recovery while the other parameters do not.The use of fixed HR values as a reliable index of the established recovery during IT is inaccurate and it may be the cause of under-training.To set the restart timing after repetitions the phenomenon of cardiac drift should be taken into account by coaches.HR drift during recoveries did not appear linked to the CO2excess.
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Affiliation(s)
- Filippo Tocco
- Department of Medical Sciences, School of Sport Medicine, Sport Physiology Lab., University of Cagliari , Italy
| | - Irene Sanna
- Department of Medical Sciences, School of Sport Medicine, Sport Physiology Lab., University of Cagliari , Italy
| | - Gabriele Mulliri
- Department of Medical Sciences, School of Sport Medicine, Sport Physiology Lab., University of Cagliari , Italy
| | - Sara Magnani
- Department of Medical Sciences, School of Sport Medicine, Sport Physiology Lab., University of Cagliari , Italy
| | - Francesco Todde
- Department of Medical Sciences, School of Sport Medicine, Sport Physiology Lab., University of Cagliari , Italy
| | - Roberto Mura
- Department of Medical Sciences, School of Sport Medicine, Sport Physiology Lab., University of Cagliari , Italy
| | - Giovanna Ghiani
- Department of Medical Sciences, School of Sport Medicine, Sport Physiology Lab., University of Cagliari , Italy
| | - Alberto Concu
- 2CTechnologies Inc., Academic Spin-off, University of Cagliari , Italy
| | - Franco Melis
- Department of Medical Sciences, School of Sport Medicine, Sport Physiology Lab., University of Cagliari , Italy
| | - Antonio Crisafulli
- Department of Medical Sciences, School of Sport Medicine, Sport Physiology Lab., University of Cagliari , Italy
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Bernard AM, Cabiddu MG, De Montis S, Mura R, Pompei R. Synthesis of new compounds with promising antiviral properties against group A and B Human Rhinoviruses. Bioorg Med Chem 2014; 22:4061-6. [PMID: 24973816 DOI: 10.1016/j.bmc.2014.05.066] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 05/23/2014] [Accepted: 05/29/2014] [Indexed: 11/17/2022]
Abstract
The human common cold, which is a benign disease caused by the Rhinoviruses, generally receives palliative symptomatic treatments, since no specific therapy against any of these viruses currently exists. In this work, some original synthetic compounds were produced and tested, in order to find non-toxic substances with an improved protection index (PI) for infected cells, as compared to reference drugs such as Pirodavir. We designed a series of novel molecules with a double oxygen in the central hydrocarbon chain and some modifications of the lateral methylisoxazole and propoxybenzoate moieties of lead compound 6602 (ethyl 4-{3-[2-(3-methyl-1,2-isoxazol-5-yl)ethoxy]propoxy}benzoate). It was found that most of these substances were actually less toxic than Pirodavir; in addition, the new molecule indicated as 8c was more than 30 times less toxic than Pirodavir, about twice as active on the group A strain of Rhinovirus HRV14, and even four times more effective on the group B strain HRV39, as compared to Pirodavir's PI.
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Affiliation(s)
- Angela M Bernard
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria di Monserrato, S.S. 554, Bivio per Sestu, I-09042 Monserrato (CA), Italy
| | - Maria G Cabiddu
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria di Monserrato, S.S. 554, Bivio per Sestu, I-09042 Monserrato (CA), Italy.
| | - Stefania De Montis
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria di Monserrato, S.S. 554, Bivio per Sestu, I-09042 Monserrato (CA), Italy
| | - Roberto Mura
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria di Monserrato, S.S. 554, Bivio per Sestu, I-09042 Monserrato (CA), Italy
| | - Raffaello Pompei
- Dipartimento di Scienze Biomediche, Sezione di Microbiologia e Virologia, Università di Cagliari, Cittadella Universitaria di Monserrato, S.S. 554, Bivio per Sestu, I-09042 Monserrato (CA), Italy.
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Angius L, Olla S, Pinna M, Mura R, Marongiu E, Roberto S, Piras F, Corona F, Milia R, Tocco F, Concu A, Crisafulli A. Aerobic and anaerobic capacity of adult and young professional soccer players. Sport Sci Health 2012. [DOI: 10.1007/s11332-012-0133-6] [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: 11/30/2022]
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Consoli A, Renieri L, Mura R, Nappini S, Ricciardi F, Pecchioli G, Ammannati F, Mangiafico S. Five to ten years follow-up after coiling of 241 patients with acutely ruptured aneurysms. A single centre experience. Interv Neuroradiol 2012; 18:5-13. [PMID: 22440595 DOI: 10.1177/159101991201800101] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2011] [Accepted: 11/19/2011] [Indexed: 11/17/2022] Open
Abstract
Endovascular treatment has assumed a role of first choice in the management of ruptured intracranial aneurysms. We describe the clinical and morphological data after the treatment of 258 ruptured intracranial aneurysms in 241 patients, in order to evaluate the safety and the efficacy of the endovascular treatment. Two hundred and forty-one patients with saccular ruptured aneurysms were treated at our institution between 2000 and 2005. After the endovascular treatment a clinical and angiographic follow-up was conducted. The clinical follow-up was carried out with a medical examination and telephonic interviews and mRS was used for evaluation. Two hundred and forty-nine acutely ruptured aneurysms were successfully treated and immediately after the endovascular procedure 81.9% of the aneurysms resulted completely occluded, 12.1% had a residual neck and 6% revealed a residual sac. The evolution of each grade was evaluated at six months and two years. During the follow-up we observed five early and one late re-bleedings. Twenty-four patients underwent a second procedure. After the discharge and up to ten years 73.1% of patients had a good clinical outcome (mRS0-1), 8.9% died and the remainder showed moderate-severe disability (mRS2-3). The long-term stability of the anatomical result is a critic-al issue of this approach because eventual re-bleedings may occur even after several months or years. A careful clinical and radiological follow-up for up to two years after the embolization may prevent recurrences but may not be sufficient.
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Affiliation(s)
- A Consoli
- Interventional Neuroradiology Unit, Careggi University Hospital, Florence, Italy.
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Bassareo PP, Fanos V, Crisafulli A, Mura R, Mercuro G. Cardiovascular phenotype in extremely low birth weight infants: long-term consequences. J Matern Fetal Neonatal Med 2011; 24 Suppl 2:3-5. [PMID: 21749300 DOI: 10.3109/14767058.2011.604932] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Low birth weight, a possible consequence of prematurity at birth or intrauterine growth restriction, has been recently recognized as an emerging risk factor to develop cardiovascular (CV) future adverse events. Our aim was to perform a short review about the studies conducted in order to evaluate the CV risk profile of a specific subpopulation of infants suffering from low birth weight, that is those having a birth weight less than 1,000 g, called extremely low birth weight.
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Affiliation(s)
- Pier Paolo Bassareo
- Department of Cardiovascular and Neurological Sciences, University of Cagliari, Cagliari, Italy.
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11
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Abstract
The authors describe a rare case of hepatocellular carcinoma that metastasized to the pectineal muscle of the right thigh. The patient had been treated with surgical procedures and with multiple sessions of transarterial chemoembolization, one of which was complicated by a right femoral artery hematoma at the catheter insertion site. It is unclear whether the muscle metastasis was caused by blood-borne spread or by tumor-cell seeding caused by the TACE procedure.
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Affiliation(s)
- D Sirigu
- Brotzu Hospital, Cagliari, Italy
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12
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Bungaro S, Irving J, Tussiwand R, Mura R, Minto L, Molteni C, Citterio M, Hall A, Biondi A, Cazzaniga G. Genomic analysis of different clonal evolution in a twin pair with t(12;21) positive acute lymphoblastic leukemia sharing the same prenatal clone. Leukemia 2007; 22:208-11. [PMID: 17914410 DOI: 10.1038/sj.leu.2404973] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Meyborg M, Mura R, Tiefenbacher C, Becker R, Michaelsen J, Niroomand F. Comparative follow up of patients with implanted cardioverter-defibrillators after induction of sustained monomorphic ventricular tachycardias or ventricular fibrillation by programmed stimulation. Heart 2003; 89:629-32. [PMID: 12748217 PMCID: PMC1767667 DOI: 10.1136/heart.89.6.629] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVE To investigate the prognostic value of induced monomorphic ventricular tachycardia (VT) and ventricular flutter or fibrillation (VF) during programmed electrical stimulation in patients with a high risk for sudden arrhythmogenic cardiac death. DESIGN Prospective cohort study. PATIENTS 102 patients at high risk for arrhythmogenic sudden cardiac death who received an automated implantable cardioverter-defibrillator (AICD) were evaluated. 56 patients received the AICD for primary prevention and 46 for secondary prevention. 58 patients had induction of a monomorphic VT (VT group) and 44 had induction of a polymorphic VT, ventricular flutter, or ventricular fibrillation (VF group) during programmed electrical stimulation. Average follow up was 20 months in both groups. MAIN OUTCOME MEASURES Appropriate AICD protocol. RESULTS In patients who received the AICD for primary prevention, 16 of 32 patients in the VT group, compared with only four of 24 patients in the VF group, received an appropriate AICD protocol (p = 0.02). In the entire study population, 479 appropriate AICD protocols were recorded in 28 (48%) patients in the VT group and 28 appropriate protocols in 11 (25%) patients in the VF group. Cumulative Kaplan-Meier event-free survival curves were significantly different (p = 0.02). CONCLUSION Induction of VF during programmed electrical stimulation is of no prognostic value even in high risk patients without previously documented ventricular fibrillation.
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Affiliation(s)
- M Meyborg
- Klinikum der Universität Heidelberg, Innere Medizin III, Bergheimer Strasse 58, D-69115 Heidelberg, Germany
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Lutz S, Mura R, Baltus D, Movsesian M, Kübler W, Niroomand F. Increased activity of membrane-associated nucleoside diphosphate kinase and inhibition of cAMP synthesis in failing human myocardium. Cardiovasc Res 2001; 49:48-55. [PMID: 11121795 DOI: 10.1016/s0008-6363(00)00222-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [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] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE Chronic heart failure is associated with a decreased responsiveness of the heart to beta-adrenergic receptor agonists. We recently demonstrated a receptor-independent activation of G proteins and modulation of cardiac adenylyl cyclase activity by sarcolemmal membrane-associated nucleoside diphosphate kinase. We wondered whether changes in the activity of nucleoside diphosphate kinase occur in heart failure and contribute to or compensate for the impairment in myocardial receptor-mediated cAMP generation. METHODS Sarcolemmal membranes were purified from non-failing and failing human left ventricular myocardium. The protein level and activity of nucleoside diphosphate kinase were quantified. The influence of nucleoside diphosphate kinase on adenylyl cyclase activity was determined by measuring the effect of GDP on adenylyl cyclase activity in the absence and presence of nucleoside diphosphate kinase inhibitors. RESULTS The amount and activity of nucleoside diphosphate kinase in sarcolemmal membranes from failing hearts (n=13) were increased 3- to 4-fold compared to levels in membranes from non-failing myocardium (n=5). This increase in sarcolemmal nucleoside diphosphate kinase activity resulted in a 50% inhibition of adenylyl cyclase activity over a range of GDP and ATP concentrations. CONCLUSION The amount and activity of nucleoside diphosphate kinase are increased in sarcolemmal membranes of failing human myocardium, resulting in a substantial receptor-independent inhibition of adenylyl cyclase activity.
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Affiliation(s)
- S Lutz
- University of Heidelberg, Department of Cardiology, Bergheimer Strasse 58, D-69115, Heidelberg, Germany
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Niroomand F, Mura R, Jakobs KH, Rauch B, Kübler W. Receptor-independent activation of cardiac adenylyl cyclase by GDP and membrane-associated nucleoside diphosphate kinase. A new cardiotonic mechanism? J Mol Cell Cardiol 1997; 29:1479-86. [PMID: 9201632 DOI: 10.1006/jmcc.1997.0384] [Citation(s) in RCA: 12] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Regulation of adenylyl cyclase activity by guanine nucleoside tri- and diphosphates as well as by stimulatory and inhibitory receptors was studied in canine cardiac sarcolemmal membranes. Guanosine triphosphate (GTP) increased adenylyl cyclase activity by a maximum of 80%, with an EC50 value of 0.7 mumol/l. The addition of the beta-adrenoceptor agonist, isoprenaline (100 mumol/l), caused a further, about 100%, increase in GTP-stimulated activity. The nucleoside diphosphate (GDP) also activated cardiac adenylyl cyclase, but in a biphasic manner. At low concentrations (EC50 0.12 mumol/ l). GDP increased enzyme activity by about 80%, followed by a plateau at 0.5-2 mumol/l and a second increase to a maximum of 60% with an EC50 value of 14 mumol/l. The stable GDP analog, guanosine 5'-O-(2-thio)diphosphate (GDP beta S), also increased cardiac adenylyl cyclase activity, but in a monophasic manner, by a maximum of 150%, with an EC50 of 0.4 mumol/l. Addition of uracil diphosphate (UDP) (3 mmol/l), which completely inhibited transphosphorylation of GDP to GTP, did not reduce adenylyl cyclase stimulation by low concentrations of GDP, whereas enzyme stimulation by high GDP concentrations was almost completely attenuated. Furthermore, pretreatment of the membranes with cholera toxin led to an increased stimulation of adenylyl cyclase activity by high concentrations of GDP. These findings suggest that the second phase of adenylyl cyclase stimulation by GDP is due to transphosphorylation of GDP to GTP, associated with activation of Gs proteins, and that stimulation by GDP itself (first phase) and endogenously formed GTP (second phase) is additive. However, in contrast to exogenously added GTP, beta-adrenoceptor activation did not enhance GDP-stimulated adenylyl cyclase activity. Furthermore, in the presence of 1 mumol/l GDP, the addition of GTP did not cause any further increase in enzyme activity. On the other hand, the muscarinic acetylcholine receptor agonist carbachol inhibited both GTP- and GDP-activated adenylyl cyclase. The inhibition of GDP-stimulated activity was lost when formation of GTP from GDP was blocked. The contrasting effects of endogenously formed GTP and exogenous GTP suggest that the formation of GTP from GDP is closely linked to the activation site of adenylyl cyclase, i.e. the stimulatory Gs protein. This receptor-independent activation can apparently bypass beta-adrenoceptor-dependent activation of cardiac adenylyl cyclase.
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Casula L, Archidiacono N, Grazia Pau M, Addis M, Mura R, Galanello R, Biddau P, Cao A, Nucaro A. Cytogenetic and molecular characterization of a variant translocation associated with acute promyelocytic leukemia and involving chromosomes 11, 15 and 17. Leukemia 1996; 10:1655-7. [PMID: 8847902] [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: 02/02/2023]
Affiliation(s)
- L Casula
- Servizio di Oncoematologia Pediatrica, Ospedale Regionale per le Microcitemie [correction of Mcrocitemie] di Cagliari, Italy
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17
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Piacentini L, Mura R, Jakobs KH, Niroomand F. Stable GDP analog-induced inactivation of G(i) proteins promotes cardiac adenylyl cyclase inhibition by guanosine 5'-(beta gamma-imino)triphosphate and muscarinic acetylcholine receptor. Biochim Biophys Acta 1996; 1282:11-6. [PMID: 8679647 DOI: 10.1016/0005-2736(96)00029-6] [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] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Low concentrations of GDP and its stable analog guanosine 5'-O-(2-thio)diphosphate (GDP beta S) have been shown to stimulate adenylyl cyclase activity in canine cardiac sarcolemmal membranes independent from a phosphate transfer reaction. The mechanism of this stimulation was further examined. The stable GTP analog guanosine 5'-(beta gamma-imino)triphosphate (Gpp(NH)p) increased basal adenylyl cyclase activity and inhibited forskolin-stimulated activity with EC50 (half-maximal effective concentration) values of 0.7 mumol/l and 10 nmol/l, respectively. In the presence of GDP beta S (5 mumol/l), which increased basal activity by about 150%, addition of Gpp(NH)p inhibited adenylyl cyclase activity by up to 50% with an EC50 value of 40 nmol/l. Activation of cardiac muscarinic acetylcholine receptors by carbachol amplified this Gpp(NH)p-induced inhibition of GDP beta S-stimulated adenylyl cyclase activity. The stimulatory effect of GDP beta S and the inhibitory effect of Gpp(NH)p on GDP beta S-stimulated adenylyl cyclase activity were both attenuated by increasing the Mg2+ concentration or substituting Mn2+ for Mg2+ in the assay. Furthermore, both effects were strongly reduced or abolished upon pretreatment of the sarcolemmal membranes with a low concentration of the SH reagent N-ethylmaleimide (10 mumol/l). These results suggest that the stimulatory effect of GDP beta S on basal adenylyl cyclase activity in canine cardiac sarcolemmal membranes is caused by inactivation of G(i) proteins, which are then rendered susceptible to activation by Gpp(NH)p and inhibitory receptors.
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D'Angelo P, Mura R, Rizzari C, Conter V, Bellini F, Valsecchi MG, Manganini C, Silvestri D, Masera G. Prognostic value of nephromegaly at diagnosis of childhood acute lymphoblastic leukemia. Acta Haematol 1995; 94:84-9. [PMID: 7484018 DOI: 10.1159/000203979] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In order to assess the prognostic value of nephromegaly (kidney enlargement > or = 2 SD from mean for age) in children at diagnosis of acute lymphoblastic leukemia (ALL), kidney size was investigated by intravenous pyelogram (IP), according to the method of Ekl of and Ringertz, in 101 children diagnosed with ALL in the period of 1975-1983. In the same period 103 additional patients with ALL were not investigated with IP for logistical reasons. Characteristics at the diagnosis of ALL in the patients of the investigated and non-investigated (with IP) groups were quite similar and event-free-survival (EFS) curves superimposable. Eighty-nine (50 males and 39 females, median age 61 months) out of 101 patients underwent IP before starting any therapy and were evaluated in the study; 27 (30.3%) presented with nephromegaly (bilateral in 13 cases and unilateral in 14). With a median follow-up time of 14.4 years (range 11-19 years), the EFS at 15 years from diagnosis was 18.5% (SE 9.5) in the nephromegalic group and 48.4% (SE 6.4) in the non-nephromegalic group. The association of poorer EFS with nephromegaly was confirmed when the comparison was adjusted by white blood cell count and age at diagnosis in a Cox regression model. Nephromegaly at diagnosis of childhood ALL may have an independent prognostic value in patients treated with 'not intensive' protocols; however, this finding should be confirmed in patients treated uniformly with contemporary intensive protocols.
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Affiliation(s)
- P D'Angelo
- Department of Pediatrics, University of Milan, S. Gerardo Hospital, Monza, Italy
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19
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Mura R, D'Angelo P, Rizzari C, Biondi A, Giudici G, Crosti L, Castagni M, Cantu'-Rajnoldi A. Lineage switch in a childhood T-cell acute lymphoblastic leukemia. Pediatr Hematol Oncol 1992; 9:281-8. [PMID: 1525008 DOI: 10.3109/08880019209016598] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Locasciulli A, Mura R, Fraschini D, Gornati G, Scovena E, Gervasoni A, Uderzo C, Masera G. High-dose methotrexate administration and acute liver damage in children treated for acute lymphoblastic leukemia. A prospective study. Haematologica 1992; 77:49-53. [PMID: 1398282] [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: 12/26/2022] Open
Abstract
BACKGROUND Methotrexate-induced hepatotoxicity following chronic low-dose administration has been extensively reported. Current protocols now include high-dose methotrexate (HDMTX), but there are few studies providing data on its acute hepatotoxicity in childhood leukemia. METHODS To evaluate the prevalence of HDMTX-induced acute hepatotoxicity, sixty-eight consecutive children with ALL were prospectively studied from diagnosis to the end of HDMTX courses with biochemical and clinical evaluation performed at regular intervals. RESULTS Prevalence of HDMTX-induced acute hepatotoxicity was 1.47% (1/68 patients). ALT values did not change in 22% (15/68) and decreased in 76.4% (52/68) after HDMTX infusion. Mean ALT levels calculated in all the patients decreased significantly during HDMTX administration when compared to the values reached during induction (p less than 0.0001). Direct hyperbilirubinemia was present only in the child with HDMTX-related hepatotoxicity. CONCLUSIONS The use of HDMTX in the treatment of childhood ALL is not associated with major evidence of direct acute hepatotoxic effects, while it may modify the pattern of preexisting liver diseases.
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Affiliation(s)
- A Locasciulli
- Clinica Pediatrica, Università di Milano, Ospedale S. Gerardo, Monza, Italy
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Fiori GM, Murgia G, Cocco A, Putzolu G, Mura R, Targhetta R, Biddau P. [Prethrombotic states in pediatrics]. Pediatr Med Chir 1991; 13:139-45. [PMID: 1896379] [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: 12/29/2022] Open
Affiliation(s)
- G M Fiori
- Servizio di Oncoematologia Infantile e Patologia, Università di Cagliari, Italia
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Biddau P, Peri M, Murgia G, Putzolu G, Fiori GM, Mura R, Monni MC, Valli S, Targhetta R, Corda R. [Incidence, mortality and survival in childhood tumors in meridional Sardinia. The Cagliari province, 1981-1988]. Epidemiol Prev 1990; 12:19-24. [PMID: 2151132] [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: 12/30/2022]
Abstract
Childhood cancer incidence, mortality and relative survival rates have been estimated in the province of Cagliari for the years 1982-86. Cases were collected from pediatric and non pediatric units operating either in the province or elsewhere. Deaths were identified through the registry offices of municipal administrations. A total of 151 cases were identified, corresponding to an incidence rate of 115.0 per million. Survival rate at three years of diagnosis was 63.3%.
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Affiliation(s)
- P Biddau
- Istituto di Clinica Pediatrica, Università di Cagliari
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Madeddu G, D'Ovidio NG, Casu AR, Mura R, Costanza C, Lai N, LeVeen HH. Evaluation of peritoneovenous shunt patency with Tc-99m labeled microspheres. J Nucl Med 1983; 24:302-7. [PMID: 6220137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The LeVeen peritoneovenous shunt (PVS) was investigated in 40 cirrhotic patients with refractory ascites. Five millicuries of Tc-99m-tagged human albumin microspheres (15-36 microns) were injected into the peritoneal cavity between the umbilicus and the left anterior superior iliac spine. The radiotracer was always detectable by scintigram in the lungs when the shunt was patent. In case of malfunction, by contrast, the radioactivity was either restricted to the venous tube or confined below the diaphragm for at least 4 hr. In the presence of complete obstruction, whereas the tube was not visualized after peritoneal injection, it was outlined by direct injection of 2 mCi of Tc-99m albumin microspheres into its subcutaneous tract, where it crossed the 12th rib, immediately above the valve. This technique sufficed to establish whether the site of obstruction was at the valve or in the tubing itself. In one patient, poor visualization of the tube and a delayed image of the lungs was caused by partial occlusion of the valve with fibrinoid debris. This radiotracer method proved simple, quick, and led to an immediate selective replacement when the shunt was not patent. Therefore, the use of this test is recommended for a definitive diagnosis, since there were neither false negatives nor false positives. No complications such as embolism or bacterial infection were encountered with Tc-99m human albumin microspheres, which are excellent tracers.
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Bagiella P, Mura R, Scarpa AL. [Ambulatory treatment of pulmonary tuberculosis of primary diagnosis at the antitubercular outpatient clinics in Sardinia]. G Ital Mal Torace 1971; 25:25-9. [PMID: 5131785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Mura R. [Indices of tubercular morbidity and tuberculin indices in the province of Sassari]. G Ital Mal Torace 1969:Suppl 1:45-7. [PMID: 5795058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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